CN118180513B - Gear grinding method - Google Patents

Abstract

The invention discloses a gear grinding method, which belongs to the technical field of gear processing. The invention solves the problem that the existing method cannot simulate and calculate the processing accuracy of a rough gear hobbing cutter and a fine gear hobbing cutter before gear processing, making it impossible to quickly verify the correctness of the gear design. The method comprises: pre-constructing a three-dimensional simulation model of a gear workpiece based on gear processing parameters, generating simulation processing instructions, performing simulation tests on the three-dimensional simulation model, and calculating the simulation test accuracy based on a pre-constructed accuracy prediction model; the embodiment of the invention constructs a three-dimensional simulation model by identifying the gear processing parameters of the gear workpiece, and uses a pre-constructed accuracy prediction model to calculate the simulation test accuracy. The machining accuracy of the gear workpiece can be simulated and calculated based on the basic parameters of the gear workpiece before the gear workpiece is processed, thereby quickly verifying the correctness of the gear design and reducing the gear processing cost.

Description

Gear grinding method

Technical Field

The invention belongs to the technical field of gear processing, and in particular relates to a gear grinding method.

Background Art

At present, gears can be divided into cylindrical gears, bevel gears, ring gears, etc. Each type of gear is suitable for different transmission occasions according to its characteristics. Gear processing is a process that uses mechanical methods to obtain the specific structure and precision of gears. Traditional gear processing methods include hobbing, milling, and ball milling.

Chinese patent CN116475702A discloses a gear processing method, comprising the following steps: normalizing a blank; lathing the blank to give it a tooth shape, and leaving sufficient machining allowance on the blank; rough hobbing the blank with a rough gear hobbing cutter; heat treatment; carburizing and quenching the blank; fine hobbing the gear blank with a fine gear hobbing cutter to correct the tooth shape; however, the existing method cannot simulate and calculate the machining accuracy of the rough gear hobbing cutter and the fine gear hobbing cutter before gear machining, making it impossible to quickly verify the correctness of the gear design, increasing the gear machining cost, and the grinding angle cannot adapt to the machining requirements of gears of different specifications. In order to solve the above problems, we propose a gear grinding method.

Summary of the invention

The purpose of the present invention is to provide a gear grinding method to address the shortcomings of the prior art, thereby solving the problem that the prior method cannot simulate and calculate the machining accuracy of the rough gear hobbing cutter and the fine gear hobbing cutter before gear machining, making it impossible to quickly verify the correctness of the gear design and increasing the gear machining cost.

The present invention is implemented in a gear grinding method, the gear grinding method comprising:

Acquire gear machining parameters of the gear workpiece, and pre-build a three-dimensional simulation model of the gear workpiece based on the gear machining parameters;

Loading the 3D simulation model, determining the grinding processing position based on the 3D simulation model, and presenting the grinding processing position and the 3D simulation model to the background display platform;

Determine grinding parameters based on grinding position and three-dimensional simulation model, and generate simulation processing instructions with grinding parameters as input;

In response to the simulation processing instruction, a simulation test is performed on the three-dimensional simulation model to obtain simulation test information, and the simulation test accuracy is calculated based on a pre-built accuracy prediction model to determine whether the simulation test accuracy meets the preset accuracy threshold. If it meets the preset accuracy threshold, the gear workpiece grinding processing instruction is executed.

In response to the grinding instruction, the gear grinding machine is started, and the gear grinding machine performs grinding on the gear workpiece.

Preferably, the method for pre-building a three-dimensional simulation model of a gear workpiece based on gear processing parameters specifically comprises:

Identify gear machining parameters of the gear workpiece, and pre-build a rough model of the gear workpiece based on the gear machining parameters;

Extract the information of the number of teeth, the number of tooth grooves, the number of involutes, the angle of tooth groove involutes, the tooth profile angle deviation and the tooth lead angle deviation from the gear processing parameters, and input the information of the number of teeth, the number of tooth grooves, the number of involutes, the angle of tooth groove involutes, the tooth profile angle deviation and the tooth lead angle deviation into the 3D modeling system;

The 3D modeling system triggers the rough model modification command, renders the information of the number of teeth, number of tooth grooves, number of involutes, tooth groove involute angles, tooth profile angle deviation and tooth lead angle deviation to the rough model of the gear workpiece, and outputs the 3D simulation model and grinding processing parameters.

Preferably, the method for calculating simulation test accuracy based on a pre-built accuracy prediction model specifically includes:

Load the identification simulation test information, and use the simulation test information as input to execute the accuracy prediction model;

The accuracy prediction model is based on the number of teeth, number of tooth grooves, number of involutes, tooth groove involute angle, tooth profile angle deviation and tooth lead angle deviation information, and extracts multiple feature vectors from the simulation test information;

The accuracy prediction model normalizes and performs dummy variable processing on the characteristic vectors of the number of teeth, the number of tooth grooves, the number of involutes, the angle of the tooth groove involute, the tooth profile angle deviation, and the tooth lead angle deviation to obtain a normalized high-dimensional expansion vector.

Taking the high-dimensional extended vector as input, the accuracy decision function in the accuracy prediction model calculates the simulation test accuracy;

The simulation test accuracy is calculated by formula (1):

(1)

Among them, the To simulate the test accuracy, Enter the value for the high-dimensional expansion vector, is the coupling coefficient of the accuracy decision function, is the correction value of the high-dimensional expansion vector, Output error value for high-dimensional extended vector, is the simulation test time;

(2)

in, is the coupling coefficient of the accuracy decision function, is the correction value of the high-dimensional expansion vector, Output error value for high-dimensional extended vector, is the dimension value of the high-dimensional extended vector;

(3)

in, is the correction value of the high-dimensional expansion vector, is the dimension value of the high-dimensional extended vector, is the correction coefficient of the correction function in the accuracy prediction model.

Preferably, the gear grinding machine tool comprises:

The machine tool body includes a turning and milling compound machine tool, a clamping support seat and a dust extraction box;

A workpiece clamping mechanism that can adapt to gear workpieces of different specifications, the workpiece clamping mechanism being arranged on the clamping support seat;

An adaptive grinding mechanism, wherein the adaptive grinding mechanism is arranged on a turning-milling compound machine tool and is used for grinding gear workpieces of different specifications;

The adaptive grinding mechanism comprises:

A grinding mechanism mounting seat, wherein the grinding mechanism mounting seat is fixedly mounted on a turning-milling compound machine tool;

An angle adjustment portion provided on a grinding mechanism mounting seat;

a linkage displacement portion connected to the angle adjustment portion, and

A universal turning and milling assembly is connected to the linkage displacement part, and the universal turning and milling assembly is used for grinding the gear workpiece.

Preferably, the workpiece clamping mechanism comprises:

A clamping working motor, wherein the clamping working motor is fixedly mounted on a clamping support seat;

A workpiece clamping part connected to the clamping working motor, the workpiece clamping part is used to clamp and drive gear workpieces of different specifications;

Wherein, the workpiece clamping portion comprises:

A clamping support seat, wherein the clamping support seat is arranged on one side of the clamping working motor, and the clamping support seat is fixedly connected to the output end of the clamping working motor, and a plurality of clamping limit grooves are arranged in the clamping support seat;

A clamping and adjusting motor, wherein the clamping and adjusting motor is fixedly mounted on the clamping and supporting seat, an output end of the clamping and adjusting motor is fixedly connected to a first gear, a second gear is disposed on one side of the first gear, and the second gear is rotatably mounted in the clamping and supporting seat;

At least one set of third gears, the third gears are rotatably arranged in the clamping support seat, the third gears are meshed with the second gears for transmission, one side of the third gear is fixedly connected with a first screw rod, the first screw rod is rotatably arranged in the clamping limit groove, a first threaded seat is threadedly sleeved on the first screw rod, and the first threaded seat is slidably installed in the clamping limit groove;

At least one set of workpiece clamping seats, the workpiece clamping seats are detachably mounted on the first threaded seat, a gear fixing roller is arranged in the workpiece clamping seat, and one end of the gear fixing roller is fixedly connected to the gear workpiece by a fastening bolt.

Preferably, the angle adjustment unit comprises:

An angle adjustment motor, wherein the angle adjustment motor is fixedly mounted on a grinding mechanism mounting seat;

A second screw is fixedly connected to the output end of the angle adjustment motor, and the second screw is rotatably arranged in a screw limit seat, and the screw limit seat is fixedly mounted on the grinding mechanism mounting seat. An adjusting sleeve is provided on the external threaded sleeve of the second screw, and a displacement limit cylinder is hinged at one end of the adjusting sleeve away from the second screw, and the displacement limit cylinder is connected to the linkage displacement part.

Preferably, the linkage displacement portion comprises:

A displacement adjustment motor, wherein the displacement adjustment motor is fixedly mounted on a grinding mechanism mounting seat;

A fourth gear fixedly connected to the output end of the displacement regulating motor, the fourth gear is rotatably mounted on the grinding mechanism mounting seat, a fifth gear is provided on one side of the fourth gear, the fifth gear is meshed with the fourth gear for transmission, the fifth gear is rotatably mounted on the grinding mechanism mounting seat, a sixth gear is provided on one side of the fifth gear, the fifth gear is meshed with the sixth gear for transmission;

An arc-shaped slide rail fixedly mounted on the grinding mechanism mounting seat, the arc-shaped slide rail being slidably connected to the sixth gear, and the arc-shaped slide rail being used to guide and limit the sixth gear;

A third screw rod fixedly connected to the sixth gear, wherein one end of the third screw rod away from the sixth gear passes through the displacement limiting cylinder and is rotationally connected to the displacement limiting cylinder;

A second threaded seat, wherein the second threaded seat is threadably sleeved on the third screw rod, and a displacement slide rod is provided on one side of the second threaded seat, wherein the displacement slide rod is fixedly mounted on the displacement limiting cylinder, and the second threaded seat is slidably connected to the displacement limiting cylinder;

An adjusting swing rod is detachably mounted on the second threaded seat, and a swing adjusting motor is fixedly mounted on one end of the adjusting swing rod away from the second threaded seat, and a universal turning and milling assembly is fixedly connected to the output end of the swing adjusting motor.

Preferably, the universal turning and milling assembly comprises:

A turning and milling drive motor, wherein the side wall of the turning and milling drive motor is fixedly connected to the output end of the swing adjustment motor, and the output end of the turning and milling drive motor is fixedly connected to a turning and milling rotating seat;

A milling adjustment unit fixedly mounted in the milling rotary seat, the milling adjustment unit being connected to a universal milling cutter, and the milling adjustment unit being used to adjust the position of the universal milling cutter;

Wherein, the turning and milling adjustment part comprises:

A turning and milling adjustment motor, wherein the turning and milling adjustment motor is fixedly installed in the turning and milling rotating seat;

The seventh gear is fixedly connected to the output end of the turning and milling adjustment motor, and multiple sets of eighth gears are meshed on the outer side of the seventh gear. The eighth gear is rotatably arranged in the turning and milling rotating seat, and a universal turning and milling cutter is fixedly connected to one side of the eighth gear.

Preferably, the method for grinding a gear workpiece by the gear grinding machine tool specifically comprises:

During operation, a mechanical arm or manipulator is used to load the gear workpiece, and the gear workpiece is fixedly connected to one end of the gear fixing roller by fastening bolts. The PLC controller controls the clamping working motor and the clamping adjustment motor to start. The clamping adjustment motor starts to drive the first gear and the second gear to rotate, and the second gear drives the third gear to rotate. The third gear drives the first screw to rotate, and the first screw drives the first threaded seat and the workpiece clamping seat to move along the clamping limit groove, so that the workpiece clamping seat clamps and fixes the gear fixing roller and the gear workpiece.

After the position of the gear workpiece is fixed, the PLC controller controls the angle adjustment motor to start based on the specifications and model of the gear workpiece, and the angle adjustment motor drives the second screw to rotate, and the rotation of the second screw drives the adjustment sleeve and the displacement limit cylinder to move. When the displacement limit cylinder moves, it can drive the sixth gear, the third screw, the second threaded seat, the swing adjustment motor and the universal turning and milling assembly to swing, so as to adjust the grinding processing angle of the universal turning and milling assembly;

After the grinding angle of the universal milling assembly is adjusted, the PLC controller obtains the specifications and models of the gear workpiece, and controls the displacement adjustment motor to start based on the specifications and models of the gear workpiece, and the displacement adjustment motor drives the fourth gear and the fifth gear to rotate, and the fifth gear drives the sixth gear to rotate, and the sixth gear drives the third screw to rotate, so that the third screw drives the second thread seat swing adjustment motor and the universal milling assembly to move, thereby realizing the adjustment of the position of the universal milling assembly;

The PLC controller controls the turning and milling adjustment motor to start, the turning and milling adjustment motor drives the seventh gear to rotate, the seventh gear drives the eighth gear to rotate, so that the eighth gear drives the universal turning and milling cutter to rotate, so that the universal turning and milling cutter can adapt to the processing requirements of gear workpieces with different specifications;

The PLC controller controls the clamping working motor to start, and the clamping working motor drives the clamping support seat, the workpiece clamping seat, the gear fixing roller and the gear workpiece to rotate. At the same time, the PLC controller controls the turning and milling drive motor to start, and the turning and milling drive motor drives the turning and milling rotating seat and the universal turning and milling cutter to rotate, thereby realizing the tooth groove grooving processing, the lower involute of the gear, the upper involute of the gear and the tooth root processing of the gear workpiece in turn.

Compared with the prior art, the embodiments of the present application have the following beneficial effects:

The embodiment of the present invention constructs a three-dimensional simulation model by identifying the gear processing parameters of the gear workpiece, and uses a pre-constructed accuracy prediction model to calculate the simulation test accuracy, and determines whether the simulation test accuracy meets the preset accuracy threshold. It can simulate and calculate the processing accuracy of the gear workpiece based on the basic parameters of the gear workpiece before the gear workpiece is processed, thereby quickly verifying the correctness of the gear design, reducing the gear processing cost, realizing the prediction and control of the tooth surface accuracy, and ensuring that the processed gear meets the accuracy requirements.

The embodiment of the present invention uses an adaptive grinding mechanism to perform precise grinding processing on gear workpieces of different specifications, and the adaptive grinding mechanism is composed of an angle adjustment part, a linkage displacement part and a universal turning and milling assembly. The angle adjustment part, the linkage displacement part and the universal turning and milling assembly work together to ensure that gears with different modules and tooth shapes can be processed. It has the advantages of being able to be processed on general machine tools, having a high gear precision grade (AGMA American standard grade 11 and above), and being able to process gear shafts with high material hardness, and being able to complete the processing with one clamping to improve the precision.

The embodiment of the present invention is provided with a workpiece clamping mechanism, which can clamp and fix gear workpieces of different specifications, thereby avoiding loosening of the gear workpiece during processing. At the same time, it can also be synchronously adjusted according to the type and specification of the gear workpiece, thereby ensuring the processing accuracy of the gear workpiece.

The embodiment of the present invention is provided with a universal turning and milling assembly, which can automatically adjust the position and angle of the universal turning and milling cutter according to the specifications and models of the gear workpiece, so that the universal turning and milling cutter can adapt to the processing requirements of different specifications and models of gear workpieces, and high-precision processing of the gear workpiece can be guaranteed without frequent replacement of the universal turning and milling cutter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the implementation flow of the gear grinding method provided by the present invention.

FIG. 2 is a schematic structural diagram of a gear grinding machine tool provided by the present invention.

FIG. 3 is a schematic diagram of the three-dimensional structure of the gear grinding machine provided by the present invention.

FIG. 4 is a front view of the gear grinding machine provided by the present invention.

FIG. 5 is a top view of the gear grinding machine provided by the present invention.

FIG. 6 is a schematic structural diagram of the workpiece clamping mechanism provided by the present invention.

FIG. 7 is an isometric view of the workpiece clamping mechanism provided by the present invention.

FIG. 8 is a side view of the workpiece clamping mechanism provided by the present invention.

FIG. 9 is a schematic structural diagram of the adaptive grinding mechanism provided by the present invention.

FIG. 10 is an axonometric view of the adaptive grinding mechanism provided by the present invention.

FIG. 11 is a side view of the adaptive grinding mechanism provided by the present invention.

FIG. 12 is a top view of the adaptive grinding mechanism provided by the present invention.

FIG. 13 is a schematic structural diagram of the universal turning and milling assembly provided by the present invention.

FIG. 14 is a schematic diagram of the three-dimensional structure of the universal turning and milling assembly provided by the present invention.

FIG. 15 is a schematic diagram of the implementation flow of the method for pre-building a three-dimensional simulation model of a gear workpiece based on gear processing parameters provided by the present invention.

FIG16 is a schematic diagram of the implementation flow of the method for calculating simulation test accuracy based on a pre-built accuracy prediction model provided by the present invention.

FIG. 17 is a schematic diagram of the implementation flow of the method for grinding a gear workpiece by the gear grinding machine provided by the present invention.

In the figure: 1-machine body, 11-turning and milling machine, 12-dust extraction box, 13-clamping support seat, 2-workpiece clamping mechanism, 21-clamping working motor, 22-workpiece clamping part, 221-clamping support seat, 222-clamping adjustment motor, 223-first gear, 224-second gear, 225-third gear, 226-first screw, 227-first thread seat, 228-workpiece clamping seat, 229-clamping limit groove, 23-gear fixing roller, 3-adaptive grinding mechanism, 31-grinding mechanism mounting seat, 32-angle adjustment part, 321-angle adjustment motor, 322-second screw, 32 3-screw limit seat, 324-adjusting sleeve, 325-displacement limit cylinder, 33-linked displacement unit, 331-displacement adjustment motor, 332-fourth gear, 333-fifth gear, 334-sixth gear, 335-arc slide rail, 336-third screw, 337-displacement slide rod, 338-second threaded seat, 339-adjusting rocker arm, 34-swing adjustment motor, 4-gear workpiece, 5-universal turning and milling assembly, 51-turning and milling drive motor, 52-turning and milling rotating seat, 53-turning and milling adjustment unit, 531-turning and milling adjustment motor, 532-seventh gear, 533-eighth gear, 54-universal turning and milling cutter.

DETAILED DESCRIPTION

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

The existing method cannot simulate and calculate the machining accuracy of the rough hobbing cutter and the fine hobbing cutter before gear machining, so that the correctness of the gear design cannot be quickly verified, the gear machining cost is increased, and the grinding angle cannot adapt to the machining requirements of gears of different specifications. In order to solve the above problems, we propose a gear grinding method. In short, the machining method includes pre-building a three-dimensional simulation model of the gear workpiece 4 based on the gear machining parameters, presenting the grinding machining position and the three-dimensional simulation model to the background display platform, taking the grinding machining parameters as input, generating simulation machining instructions, responding to the simulation machining instructions, performing simulation testing on the three-dimensional simulation model, obtaining simulation test information, and calculating the simulation test accuracy based on the pre-built accuracy prediction model. The embodiment of the present invention constructs a three-dimensional simulation model by identifying the gear machining parameters of the gear workpiece 4, and uses the pre-built accuracy prediction model to calculate the simulation test accuracy, and judges whether the simulation test accuracy meets the preset accuracy threshold. It can simulate and calculate the machining accuracy of the gear workpiece 4 based on the basic parameters of the gear workpiece 4 before the gear workpiece 4 is machined, so that the correctness of the gear design can be quickly verified, the gear machining cost is reduced, and the prediction and control of the tooth surface accuracy are realized, ensuring that the machined gear meets the accuracy requirements.

It should be noted that the processing method of this embodiment can be used for processing cylindrical gears, bevel gears, helical gears, internal and external gears, and the gear workpiece 4 can be a cast, cut, rolled and sintered gear blank.

An embodiment of the present invention provides a gear grinding method. FIG1 shows a schematic diagram of the implementation process of the gear grinding method. The gear grinding method specifically includes:

Step S10, obtaining gear processing parameters of the gear workpiece 4, and pre-building a three-dimensional simulation model of the gear workpiece 4 based on the gear processing parameters;

It should be noted that the gear processing parameters include but are not limited to the thickness, material, diameter, number of teeth, number of tooth grooves, number of involutes, tooth groove involute angle, tooth profile angle deviation and tooth lead angle deviation information of the gear.

Step S20, loading the three-dimensional simulation model, determining the grinding processing position based on the three-dimensional simulation model, and presenting the grinding processing position and the three-dimensional simulation model to the background display platform;

Step S30, determining grinding parameters based on the grinding position and the three-dimensional simulation model, and generating simulation processing instructions with the grinding parameters as input;

In this embodiment, the grinding processing parameters include but are not limited to grinding allowance, milling cutter type, milling cutter angle, indexing method, workpiece feeding method, machine tool and tool rotation, pre-processing method, motor power, and motor working mode.

Step S40, in response to the simulation processing instruction, performing simulation testing on the three-dimensional simulation model, acquiring simulation testing information, and calculating the simulation testing accuracy based on a pre-built accuracy prediction model;

Step S50, determining whether the simulation test accuracy meets a preset accuracy threshold;

It should be noted that the preset accuracy threshold may be set to 0.95-1.

Step S60 , if the preset accuracy threshold is met, the grinding instruction of the gear workpiece 4 is executed.

Step S70 , in response to the grinding instruction, starting the gear grinding machine tool, and the gear grinding machine tool performs grinding on the gear workpiece 4 .

Step S80, if it does not meet the preset accuracy threshold, adjust the grinding processing parameters, generate simulation processing instructions, and execute step S40.

The embodiment of the present invention constructs a three-dimensional simulation model by identifying the gear processing parameters of the gear workpiece 4, and uses a pre-constructed accuracy prediction model to calculate the simulation test accuracy, and determines whether the simulation test accuracy meets the preset accuracy threshold. Before the gear workpiece 4 is processed, the processing accuracy of the gear workpiece 4 can be simulated and calculated based on the basic parameters of the gear workpiece 4, thereby quickly verifying the correctness of the gear design, reducing the gear processing cost, realizing the prediction and control of the tooth surface accuracy, and ensuring that the processed gear meets the accuracy requirements.

The embodiment of the present invention provides a method for pre-building a three-dimensional simulation model of a gear workpiece 4 based on gear processing parameters. FIG. 15 shows a schematic diagram of the implementation process of the method for pre-building a three-dimensional simulation model of a gear workpiece 4 based on gear processing parameters. The method for pre-building a three-dimensional simulation model of a gear workpiece 4 based on gear processing parameters specifically includes:

Step S101, identifying gear processing parameters of the gear workpiece 4, and pre-building a rough model of the gear workpiece 4 based on the gear processing parameters;

It should be noted that when pre-building the rough model of the gear workpiece 4 based on the gear processing parameters, it can be automatically generated by using Genie, Nvidia Get3D, Autodesk ReCap, and Daz Studio software, and the rough model of the gear is the unprocessed three-dimensional form of the gear workpiece 4 to be simulated.

Step S102, extracting information on the number of teeth, the number of tooth gaps, the number of involutes, the angle of the tooth gap involutes, the tooth profile angle deviation, and the tooth lead angle deviation from the gear processing parameters, and inputting the information on the number of teeth, the number of tooth gaps, the number of involutes, the angle of the tooth gap involutes, the tooth profile angle deviation, and the tooth lead angle deviation into a three-dimensional modeling system;

In this embodiment, the 3D modeling system may be a 3D modeling system of Genie, Nvidia Get3D, Autodesk ReCap, or DazStudio software.

In step S103, the 3D modeling system triggers a rough model modification instruction, renders the number of teeth, number of tooth grooves, number of involutes, tooth groove involute angles, tooth profile angle deviation, and tooth lead angle deviation information to the rough model of the gear workpiece 4, and outputs a 3D simulation model and grinding processing parameters.

The embodiment of the present invention pre-constructs a three-dimensional simulation model of the gear workpiece 4 through gear processing parameters, which can facilitate simulation testing of the three-dimensional simulation model, thereby providing support for improving the gear grinding processing accuracy and avoiding the problem of increased grinding processing costs and scrap rates due to uncontrollable accuracy during actual processing.

The embodiment of the present invention provides a method for calculating simulation test accuracy based on a pre-built accuracy prediction model. FIG16 shows a schematic diagram of the implementation process of the method for calculating simulation test accuracy based on a pre-built accuracy prediction model. The method for calculating simulation test accuracy based on a pre-built accuracy prediction model specifically includes:

Step S201, loading and identifying simulation test information, taking the simulation test information as input, and executing the accuracy prediction model;

Step S202, the accuracy prediction model extracts multiple feature vectors from the simulation test information based on the number of teeth, the number of tooth grooves, the number of involutes, the tooth groove involute angle, the tooth profile angle deviation and the tooth lead angle deviation information;

Step S203, the accuracy prediction model normalizes and performs dummy variable processing on the feature vectors of the number of teeth, the number of tooth grooves, the number of involutes, the tooth groove involute angle, the tooth profile angle deviation, and the tooth lead angle deviation to obtain a normalized high-dimensional expansion vector;

It should be noted that the accuracy prediction model normalizes and processes the characteristic vectors of the number of teeth, the number of tooth grooves, the number of involutes, the tooth groove involute angle, the tooth profile angle deviation and the tooth direction angle deviation respectively, which can improve the prediction accuracy of the model, reduce the calculation load of the model, and improve data utilization. The normalized high-dimensional expansion vector refers to the vector output after the accuracy prediction model is used to normalize the multi-source heterogeneous data, which helps to eliminate the influence of the data dimension on the model. The normalized high-dimensional expansion vector can more easily perform feature combination, which helps the model capture the correlation between different data sources, helps to integrate information from different sources, and improves the completeness and accuracy of data analysis.

Step S204, using the high-dimensional extended vector as input, the accuracy decision function in the accuracy prediction model calculates the simulation test accuracy.

It should be noted that the accuracy prediction model includes an input layer, a vector convolution layer, a feature extraction layer, a residual module and an output layer. The input layer is connected to the vector convolution layer, the vector convolution layer is connected to the feature extraction layer, the feature extraction layer is connected to the residual module, and the residual module is divided into three layers. The first layer is provided with 128 3*3*3 convolution kernels, the second layer is provided with 64 3*3*3 convolution kernels, and the third layer is provided with 32 3*3*3 convolution kernels. The vector convolution layer includes a three-dimensional convolution layer and a vector dimensionality increase transformation module. The accuracy prediction model is a model constructed and trained based on support vector machine and principal component analysis.

The simulation test accuracy is calculated by formula (1):

(1)

Among them, the To simulate the test accuracy, Enter the value for the high-dimensional expansion vector, is the coupling coefficient of the precision decision function. In this embodiment, the coupling coefficient of the precision decision function is 0.1-0.45, and the precision decision function can be a Bayesian decision function, a K-nearest neighbor algorithm function, or a SVM function based on a kernel technique. is the correction value of the high-dimensional expansion vector, Output error value for high-dimensional extended vector, is the simulation test time;

(2)

in, is the coupling coefficient of the accuracy decision function, is the correction value of the high-dimensional expansion vector, Output error value for high-dimensional extended vector, is the dimension value of the high-dimensional extended vector. In this embodiment, the dimension value of the high-dimensional extended vector may be 3-6;

(3)

in, is the correction value of the high-dimensional expansion vector, is the dimension value of the high-dimensional extended vector, is the correction coefficient of the correction function in the accuracy prediction model. In this embodiment, the correction coefficient can be 1-5.

The embodiment of the present invention provides a gear grinding machine tool. FIG. 2 to FIG. 5 show a schematic structural diagram of the gear grinding machine tool. The gear grinding machine tool specifically includes:

The machine tool body 1 includes a turning and milling machine tool 11, a clamping support seat 13 and a dust extraction box 12;

It should be noted that the turning-milling compound machine tool 11 can be a rectangular machine tool or a circular machine tool structure, and the turning-milling compound machine tool 11 and the clamping support seat 13 are fixedly connected by mortise and tenon or rivet, and the dust extraction box 12 is arranged in the middle of the turning-milling compound machine tool 11, and a dust extraction fan is arranged in the dust extraction box 12.

A workpiece clamping mechanism 2 that can adapt to gear workpieces 4 of different specifications, the workpiece clamping mechanism 2 being arranged on the clamping support seat 13;

An adaptive grinding mechanism 23, wherein the adaptive grinding mechanism 23 is disposed on the turning-milling compound machine tool 11, and the adaptive grinding mechanism 23 is used for grinding gear workpieces 4 of different specifications;

As shown in FIGS. 9 to 12 , the adaptive grinding mechanism 23 includes:

A grinding mechanism mounting seat 31, wherein the grinding mechanism mounting seat 31 is fixedly mounted on the turning-milling compound machine tool 11;

The grinding mechanism mounting seat 31 can be a rectangular seat or an "L"-shaped seat structure, and the grinding mechanism mounting seat 31 is fixed to the turning-milling compound machine tool 11 by fastening bolts, plug-in or threaded connection.

An angle adjustment portion 32 disposed on the grinding mechanism mounting seat 31;

a linkage displacement portion 33 connected to the angle adjustment portion 32, and

The universal milling assembly 5 is connected to the linkage displacement part 33 , and the universal milling assembly 5 is used for grinding the gear workpiece 4 .

The embodiment of the present invention uses an adaptive grinding mechanism 23 to perform precise grinding processing on gear workpieces 4 of different specifications, and the adaptive grinding mechanism 23 is composed of an angle adjustment part 32, a linkage displacement part 33 and a universal turning and milling assembly 5. The angle adjustment part 32, the linkage displacement part 33 and the universal turning and milling assembly 5 work together to ensure that gears with different modules and tooth shapes can be processed. It has the advantages of being able to be processed on general machine tools, having a high gear precision grade (AGMA American standard grade 11 and above), and being able to process gear shafts with high material hardness, and being able to complete the processing with one clamping to improve the precision.

In a further preferred embodiment of the present invention, as shown in FIGS. 6 to 8 , the workpiece clamping mechanism 2 comprises:

A clamping working motor 21, wherein the clamping working motor 21 is fixedly mounted on the clamping support seat 13;

A workpiece clamping part 22 connected to the clamping working motor 21, wherein the workpiece clamping part 22 is used to clamp and drive gear workpieces 4 of different specifications;

Wherein, the workpiece clamping portion 22 includes:

A clamping support seat 221, which is arranged on one side of the clamping working motor 21, and is fixedly connected to the output end of the clamping working motor 21, and a plurality of clamping limit grooves 229 are provided in the clamping support seat 221. The number of the clamping limit grooves 229 can be 4-10 groups, and the clamping limit grooves 229 are all provided in the clamping support seat 221;

It should be noted that the clamping support seat 221 is fixedly connected to the clamping working motor 21 by fastening bolts or welding. The clamping working motor 21 is fixedly installed on the clamping support seat 13 by means of a clamp or fastening bolts. The clamping working motor 21 is controlled to open and close by a PLC controller, and the PLC controller can be fixedly installed on the turning-milling compound machine tool 11.

A clamping and adjusting motor 222, wherein the clamping and adjusting motor 222 is fixedly mounted on the clamping and supporting seat 221, wherein an output end of the clamping and adjusting motor 222 is fixedly connected to a first gear 223, a second gear 224 is disposed on one side of the first gear 223, and the second gear 224 is rotatably mounted in the clamping and supporting seat 221;

In this embodiment, the clamping adjustment motor 222 is connected to a PLC controller via Bluetooth, and the clamping adjustment motor 222 is fixedly mounted on the clamping support seat 221 by means of a clamp or welding. The clamping adjustment motor 222 and the clamping working motor 21 can both be single-phase asynchronous motors. The side wall of the first gear 223 is fixedly connected to the output end of the clamping adjustment motor 222 by means of an interference fit, while the second gear 224 is hollow inside, and the side wall of the second gear 224 is rotatably connected to the clamping support seat 221 by means of rollers or bearings.

At least one set of third gears 225, the third gears 225 are rotatably arranged in the clamping support seat 221, the third gears 225 are meshed with the second gears 224 for transmission, a first screw rod 226 is fixedly connected to one side of the third gear 225, the first screw rod 226 is rotatably arranged in the clamping limit groove 229, a first threaded seat 227 is threadedly sleeved on the first screw rod 226, and the first threaded seat 227 is slidably installed in the clamping limit groove 229;

It should be noted that the third gear 225 is meshed with the side wall of the second gear 224 for transmission, the third gear 225 is fixedly connected to the end of the first screw rod 226 by riveting or plugging, and the two ends of the first screw rod 226 are rotatably connected between bearings and clamping limit grooves 229.

At least one set of workpiece clamping seats 228, the workpiece clamping seats 228 are detachably mounted on the first threaded seat 227, a gear fixing roller 23 is arranged inside the workpiece clamping seat 228, and one end of the gear fixing roller 23 is fixedly connected to the gear workpiece 4 by a fastening bolt.

In this embodiment, the workpiece clamping seat 228 can be specifically an arc-shaped seat or a rectangular seat, and the workpiece clamping seat 228 can be detachably connected to the first threaded seat 227 by a snap or a fastening bolt. The gear fixing roller 23 can be specifically a round seat or a round roller with a hollow interior, and one end of the gear fixing roller 23 is fixedly connected to the gear workpiece 4 by a fastening bolt, thereby realizing the support and fixation of the gear workpiece 4 and ensuring the processing space of the gear workpiece 4.

During operation, a robotic arm or manipulator is used to load the gear workpiece 4, and the gear workpiece 4 is fixedly connected to one end of the gear fixing roller 23 by tightening bolts. The PLC controller controls the clamping working motor 21 and the clamping adjustment motor 222 to start. The clamping adjustment motor 222 starts to drive the first gear 223 and the second gear 224 to rotate, and the second gear 224 drives the third gear 225 to rotate. The third gear 225 drives the first screw 226 to rotate, and the first screw 226 drives the first threaded seat 227 and the workpiece clamping seat 228 to move along the clamping limit groove 229, so that the workpiece clamping seat 228 clamps and fixes the gear fixing roller 23 and the gear workpiece 4.

The embodiment of the present invention is provided with a workpiece clamping mechanism 2, which can clamp and fix gear workpieces 4 of different specifications, thereby avoiding loosening of the gear workpiece 4 during processing. At the same time, it can also be synchronously adjusted according to the type and specification of the gear workpiece 4, thereby ensuring the processing accuracy of the gear workpiece 4.

In a further preferred embodiment of the present invention, as shown in FIGS. 9 to 12 , the angle adjustment portion 32 includes:

An angle adjustment motor 321, wherein the angle adjustment motor 321 is fixedly mounted on the grinding mechanism mounting seat 31;

A second screw 322 is fixedly connected to the output end of the angle adjustment motor 321, and the second screw 322 is rotatably set in a screw limit seat 323. The screw limit seat 323 is fixedly mounted on the grinding mechanism mounting seat 31. The external thread sleeve of the second screw 322 is provided with an adjusting sleeve 324, and the end of the adjusting sleeve 324 away from the second screw 322 is hinged with a displacement limit cylinder 325, and the displacement limit cylinder 325 is connected to the linkage displacement part 33.

In this embodiment, the angle adjustment motor 321 is electrically connected to a PLC controller, and the angle adjustment motor 321 can be a servo motor. The angle adjustment motor 321 is fixedly mounted on the grinding mechanism mounting seat 31 with fastening bolts or clamps, and the inclination angle of the angle adjustment motor 321 can be 10-70°.

It should be noted that one end of the second screw 322 is fixedly connected to the output end of the angle adjustment motor 321 by means of interference fit, and the side wall of the second screw 322 is rotatably connected to the screw limit seat 323 through a bearing or a roller. The screw limit seat 323 is fixedly connected to the grinding mechanism mounting seat 31 through a fastening bolt, and the displacement limit cylinder 325 can be a hollow round sleeve or cylinder.

In a further preferred embodiment of the present invention, as shown in FIGS. 9 and 10 , the linkage displacement portion 33 includes:

A displacement adjustment motor 331 is fixedly mounted on the grinding mechanism mounting seat 31. The displacement adjustment motor 331 is electrically connected to the PLC controller, and the displacement adjustment motor 331 is fixedly mounted on the grinding mechanism mounting seat 31 by fastening bolts or welding. The output end of the displacement adjustment motor 331 is fixedly connected to the side wall of the fourth gear 332 by interference fit, and the fourth gear 332 is rotatably connected to the grinding mechanism mounting seat 31 by a bearing or a roller.

A fourth gear 332 fixedly connected to the output end of the displacement adjustment motor 331, the fourth gear 332 is rotatably mounted on the grinding mechanism mounting seat 31, a fifth gear 333 is provided on one side of the fourth gear 332, the fifth gear 333 is meshed with the fourth gear 332, the fifth gear 333 is rotatably mounted on the grinding mechanism mounting seat 31, a sixth gear 334 is provided on one side of the fifth gear 333, the fifth gear 333 is meshed with the sixth gear 334;

An arc-shaped slide rail 335 fixedly mounted on the grinding mechanism mounting seat 31, wherein the arc-shaped slide rail 335 is slidably connected to the sixth gear 334, and the arc-shaped slide rail 335 is used to guide and limit the sixth gear 334;

In the embodiment of the present invention, the inner wall of the arc-shaped slide rail 335 is polished, and one end of the arc-shaped slide rail 335 is fixedly mounted on the grinding mechanism mounting seat 31 by plugging or riveting. The arc-shaped slide rail 335 can be a one-third, one-quarter or one-sixth slide rail. The setting of the arc-shaped slide rail 335 realizes the guide limit of the sixth gear 334.

A third screw rod 336 fixedly connected to the sixth gear 334, wherein one end of the third screw rod 336 away from the sixth gear 334 passes through the displacement limiting cylinder 325 and is rotationally connected to the displacement limiting cylinder 325, and a side wall of the third screw rod 336 is rotationally connected to the inner wall of the displacement limiting cylinder 325 via a bearing or a roller;

A second threaded seat 338, wherein the second threaded seat 338 is threadedly sleeved on the third screw rod 336, and a displacement slide rod 337 is provided on one side of the second threaded seat 338, wherein the displacement slide rod 337 is fixedly mounted on the displacement limiting cylinder 325, and the second threaded seat 338 is slidably connected to the displacement limiting cylinder 325, and one end of the displacement slide rod 337 is fixedly connected to the displacement limiting cylinder 325 by a snap-fit or plug-in manner;

The adjusting rocker arm 339 is detachably mounted on the second threaded seat 338 , and a swing adjusting motor 34 is fixedly mounted on one end of the adjusting rocker arm 339 away from the second threaded seat 338 , and a universal turning and milling assembly 5 is fixedly connected to the output end of the swing adjusting motor 34 .

In this embodiment, the adjusting rocker rod 339 can be an "L"-shaped rod, an arc-shaped rod or a bent rod structure. One end of the adjusting rocker rod 339 is fixedly connected to the second threaded seat 338 by means of threads or plug-in. The end of the adjusting rocker rod 339 is fixedly connected to the swing adjustment motor 34 by means of a retaining ring or a fastening bolt.

After the position of the gear workpiece 4 is fixed, the PLC controller controls the angle adjustment motor 321 to start based on the specifications and model of the gear workpiece 4. The angle adjustment motor 321 drives the second screw 322 to rotate. The rotation of the second screw 322 drives the adjustment sleeve 324 and the displacement limit cylinder 325 to move. When the displacement limit cylinder 325 moves, it can drive the sixth gear 334, the third screw 336, the second threaded seat 338, the swing adjustment motor 34 and the universal turning and milling assembly 5 to swing, thereby realizing the adjustment of the grinding processing angle of the universal turning and milling assembly 5.

After the grinding angle of the universal turning and milling assembly 5 is adjusted, the PLC controller obtains the specifications and model of the gear workpiece 4, and controls the displacement adjustment motor 331 to start based on the specifications and model of the gear workpiece 4. The displacement adjustment motor 331 drives the fourth gear 332 and the fifth gear 333 to rotate, and the fifth gear 333 drives the sixth gear 334 to rotate. The sixth gear 334 drives the third screw 336 to rotate, so that the third screw 336 drives the second threaded seat 338 to swing the adjustment motor 34 and the universal turning and milling assembly 5 to move, thereby realizing the adjustment of the position of the universal turning and milling assembly 5.

In a further preferred embodiment of the present invention, as shown in FIGS. 13 and 14 , the universal milling assembly 5 comprises:

A turning and milling drive motor 51, wherein the side wall of the turning and milling drive motor 51 is fixedly connected to the output end of the swing adjustment motor 34, and the output end of the turning and milling drive motor 51 is fixedly connected to a turning and milling rotating seat 52;

A milling adjustment part 53 is fixedly mounted in the milling rotary seat 52 . The milling adjustment part 53 is connected to a universal milling cutter 54 . The milling adjustment part 53 is used to adjust the position of the universal milling cutter 54 .

In this embodiment, the turning and milling drive motor 51 can specifically be a servo motor, and the turning and milling drive motor 51 is fixedly connected to the output end of the swing adjustment motor 34 by a fastening bolt, and the output end of the turning and milling drive motor 51 is fixedly connected to the turning and milling rotating seat 52 by an interference fit. The turning and milling rotating seat 52 can specifically be a round seat with a hollow interior, and the universal turning and milling cutter 54 can be a diamond-shaped, rectangular, fan-shaped or conical structure, and the universal turning and milling cutter 54 can be made of high-speed steel or cemented carbide.

The embodiment of the present invention is provided with a universal turning and milling assembly 5, which can automatically adjust the position and angle of the universal turning and milling cutter 54 according to the specifications and models of the gear workpiece 4, so that the universal turning and milling cutter 54 can adapt to the processing requirements of different specifications and models of gear workpieces 4, and high-precision processing of the gear workpiece 4 can be guaranteed without frequent replacement of the universal turning and milling cutter 54.

Wherein, the turning and milling adjustment part 53 includes:

A turning and milling adjustment motor 531, wherein the turning and milling adjustment motor 531 is fixedly installed in the turning and milling rotating seat 52, wherein the turning and milling adjustment motor 531 is connected to the PLC controller via Bluetooth or LAN communication, and the turning and milling adjustment motor 531 is fixedly installed in the turning and milling rotating seat 52 via fastening bolts;

The seventh gear 532 is fixedly connected to the output end of the turning and milling adjustment motor 531, and multiple groups of eighth gears 533 are meshed on the outer side of the seventh gear 532. The eighth gear 533 is rotatably set in the turning and milling rotating seat 52, and a universal turning and milling cutter 54 is fixedly connected to one side of the eighth gear 533.

In this embodiment, the seventh gear 532 is rotatably connected to the turning and milling rotating seat 52 through a bearing, the eighth gear 533 is meshed with the seventh gear 532 for transmission, the eighth gear 533 is circumferentially arranged in the turning and milling rotating seat 52, the number of the eighth gears 533 is consistent with the universal turning and milling cutter 54, and the eighth gear 533 is fixedly connected to the universal turning and milling cutter 54 by welding or tightening bolts.

The PLC controller controls the turning and milling adjustment motor 531 to turn on, the turning and milling adjustment motor 531 drives the seventh gear 532 to rotate, and the seventh gear 532 drives the eighth gear 533 to rotate, so that the eighth gear 533 drives the universal turning and milling cutter 54 to rotate, so that the universal turning and milling cutter 54 can adapt to the processing requirements of gear workpieces 4 with different specifications.

The PLC controller controls the clamping working motor 21 to start, and the clamping working motor 21 drives the clamping support seat 221, the workpiece clamping seat 228, the gear fixing roller 23 and the gear workpiece 4 to rotate. At the same time, the PLC controller controls the turning and milling drive motor 51 to start, and the turning and milling drive motor 51 drives the turning and milling rotating seat 52 and the universal turning and milling cutter 54 to rotate, thereby realizing the tooth groove grooving processing, the lower involute of the gear, the upper involute of the gear and the tooth root processing of the gear workpiece 4 in turn.

In a further preferred embodiment of the present invention, as shown in FIG17 , the method for grinding the gear workpiece 4 by the gear grinding machine tool specifically includes:

Step S301, during operation, a mechanical arm or a mechanical hand is used to load the gear workpiece 4, and the gear workpiece 4 is fixedly connected to one end of the gear fixing roller 23 by tightening bolts, and the PLC controller controls the clamping working motor 21 and the clamping adjustment motor 222 to start, and the clamping adjustment motor 222 starts to drive the first gear 223 and the second gear 224 to rotate, and the second gear 224 drives the third gear 225 to rotate, and the third gear 225 drives the first screw 226 to rotate, and the first screw 226 drives the first threaded seat 227 and the workpiece clamping seat 228 to move along the clamping limit groove 229, so that the workpiece clamping seat 228 clamps and fixes the gear fixing roller 23 and the gear workpiece 4;

Step S302, after the position of the gear workpiece 4 is fixed, the PLC controller controls the angle adjustment motor 321 to start based on the specifications and model of the gear workpiece 4, and the angle adjustment motor 321 drives the second screw 322 to rotate, and the rotation of the second screw 322 drives the adjustment sleeve 324 and the displacement limit cylinder 325 to move, and when the displacement limit cylinder 325 moves, it can drive the sixth gear 334, the third screw 336, the second threaded seat 338, the swing adjustment motor 34 and the universal milling assembly 5 to swing, so as to adjust the grinding processing angle of the universal milling assembly 5;

Step S303, after the grinding angle of the universal milling assembly 5 is adjusted, the PLC controller obtains the specification and model of the gear workpiece 4, and controls the displacement adjustment motor 331 to start based on the specification and model of the gear workpiece 4, and the displacement adjustment motor 331 drives the fourth gear 332 and the fifth gear 333 to rotate, the fifth gear 333 drives the sixth gear 334 to rotate, and the sixth gear 334 drives the third screw 336 to rotate, so that the third screw 336 drives the second threaded seat 338 to swing the adjustment motor 34 and the universal milling assembly 5 to move, thereby realizing the adjustment of the position of the universal milling assembly 5;

Step S304, the PLC controller controls the turning and milling adjustment motor 531 to start, the turning and milling adjustment motor 531 drives the seventh gear 532 to rotate, the seventh gear 532 drives the eighth gear 533 to rotate, so that the eighth gear 533 drives the universal turning and milling cutter 54 to rotate, so that the universal turning and milling cutter 54 can adapt to the processing requirements of gear workpieces 4 with different specifications;

Step S305, the PLC controller controls the clamping working motor 21 to start, and the clamping working motor 21 drives the clamping support seat 221, the workpiece clamping seat 228, the gear fixing roller 23 and the gear workpiece 4 to rotate. At the same time, the PLC controller controls the turning and milling drive motor 51 to start, and the turning and milling drive motor 51 drives the turning and milling rotating seat 52 and the universal turning and milling cutter 54 to rotate, thereby realizing the tooth groove grooving processing, the lower involute of the gear, the upper involute of the gear and the tooth root processing of the gear workpiece 4 in turn.

In summary, the present invention provides a gear grinding method. The embodiment of the present invention constructs a three-dimensional simulation model by identifying the gear processing parameters of the gear workpiece 4, and uses a pre-constructed accuracy prediction model to calculate the simulation test accuracy, and judges whether the simulation test accuracy meets the preset accuracy threshold. Before the gear workpiece 4 is processed, the processing accuracy of the gear workpiece 4 can be simulated and calculated based on the basic parameters of the gear workpiece 4, so as to quickly verify the correctness of the gear design, reduce the gear processing cost, realize the prediction and control of the tooth surface accuracy, and ensure that the processed gear meets the accuracy requirements.

It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims (2)

1. A gear grinding method, characterized in that the gear grinding method comprises: Acquire gear machining parameters of the gear workpiece, and pre-build a three-dimensional simulation model of the gear workpiece based on the gear machining parameters; Loading the 3D simulation model, determining the grinding processing position based on the 3D simulation model, and presenting the grinding processing position and the 3D simulation model to the background display platform; Determine grinding parameters based on grinding position and three-dimensional simulation model, and generate simulation processing instructions with grinding parameters as input; In response to the simulation processing instruction, a simulation test is performed on the three-dimensional simulation model, simulation test information is obtained, the simulation test accuracy is calculated based on a pre-built accuracy prediction model, and it is determined whether the simulation test accuracy meets a preset accuracy threshold. If it meets the preset accuracy threshold, a gear workpiece grinding processing instruction is executed; The gear grinding method further comprises: In response to the grinding instruction, the gear grinding machine tool is started, and the gear grinding machine tool performs grinding on the gear workpiece; The method for calculating simulation test accuracy based on a pre-built accuracy prediction model specifically includes: Load the identification simulation test information, and use the simulation test information as input to execute the accuracy prediction model; The accuracy prediction model is based on the number of teeth, number of tooth grooves, number of involutes, tooth groove involute angle, tooth profile angle deviation and tooth lead angle deviation information, and extracts multiple feature vectors from the simulation test information; The accuracy prediction model normalizes and performs dummy variable processing on the characteristic vectors of the number of teeth, the number of tooth grooves, the number of involutes, the angle of the tooth groove involute, the tooth profile angle deviation, and the tooth lead angle deviation to obtain a normalized high-dimensional expansion vector. Taking the high-dimensional extended vector as input, the accuracy decision function in the accuracy prediction model calculates the simulation test accuracy; The simulation test accuracy is calculated by formula (1): (1) Among them, the To simulate the test accuracy, Enter the value for the high-dimensional expansion vector, is the coupling coefficient of the accuracy decision function, is the correction value of the high-dimensional expansion vector, Output error value for high-dimensional extended vector, is the simulation test time; (2) in, is the coupling coefficient of the accuracy decision function, is the correction value of the high-dimensional expansion vector, Output error value for high-dimensional extended vector, is the dimension value of the high-dimensional extended vector; (3) in, is the correction value of the high-dimensional expansion vector, is the dimension value of the high-dimensional extended vector, is the correction coefficient of the correction function in the accuracy prediction model; The gear grinding machine tool comprises: The machine tool body includes a turning and milling compound machine tool, a clamping support seat and a dust extraction box; A workpiece clamping mechanism that can adapt to gear workpieces of different specifications, the workpiece clamping mechanism being arranged on the clamping support seat; An adaptive grinding mechanism, wherein the adaptive grinding mechanism is arranged on a turning-milling compound machine tool and is used for grinding gear workpieces of different specifications; The adaptive grinding mechanism comprises: A grinding mechanism mounting seat, wherein the grinding mechanism mounting seat is fixedly mounted on a turning-milling compound machine tool; An angle adjustment portion provided on a grinding mechanism mounting seat; a linkage displacement portion connected to the angle adjustment portion, and A universal milling assembly, the universal milling assembly is connected to the linkage displacement part, and the universal milling assembly is used for grinding the gear workpiece; The angle adjustment unit comprises: An angle adjustment motor, wherein the angle adjustment motor is fixedly mounted on a grinding mechanism mounting seat; A second screw rod fixedly connected to the output end of the angle adjustment motor, the second screw rod being rotatably arranged in a screw rod limiting seat, the screw rod limiting seat being fixedly mounted on the grinding mechanism mounting seat, an adjusting sleeve being arranged on the outer thread sleeve of the second screw rod, a displacement limiting cylinder being hingedly connected to one end of the adjusting sleeve away from the second screw rod, and the displacement limiting cylinder being connected to the linkage displacement portion; The linkage displacement unit comprises: A displacement adjustment motor, wherein the displacement adjustment motor is fixedly mounted on a grinding mechanism mounting seat; A fourth gear fixedly connected to the output end of the displacement regulating motor, the fourth gear is rotatably mounted on the grinding mechanism mounting seat, a fifth gear is provided on one side of the fourth gear, the fifth gear is meshed with the fourth gear for transmission, the fifth gear is rotatably mounted on the grinding mechanism mounting seat, a sixth gear is provided on one side of the fifth gear, the fifth gear is meshed with the sixth gear for transmission; An arc-shaped slide rail fixedly mounted on the grinding mechanism mounting seat, the arc-shaped slide rail being slidably connected to the sixth gear, and the arc-shaped slide rail being used to guide and limit the sixth gear; A third screw rod fixedly connected to the sixth gear, wherein one end of the third screw rod away from the sixth gear passes through the displacement limiting cylinder and is rotationally connected to the displacement limiting cylinder; A second threaded seat, wherein the second threaded seat is threadably sleeved on the third screw rod, and a displacement slide rod is provided on one side of the second threaded seat, wherein the displacement slide rod is fixedly mounted on the displacement limiting cylinder, and the second threaded seat is slidably connected to the displacement limiting cylinder; An adjusting swing rod detachably mounted on the second threaded seat, an end of the adjusting swing rod away from the second threaded seat is fixedly mounted with a swing adjusting motor, and an output end of the swing adjusting motor is fixedly connected with a universal turning and milling assembly; The universal turning and milling assembly comprises: A turning and milling drive motor, wherein the side wall of the turning and milling drive motor is fixedly connected to the output end of the swing adjustment motor, and the output end of the turning and milling drive motor is fixedly connected to a turning and milling rotating seat; A milling adjustment unit fixedly mounted in the milling rotary seat, the milling adjustment unit being connected to a universal milling cutter, and the milling adjustment unit being used to adjust the position of the universal milling cutter; Wherein, the turning and milling adjustment part comprises: A turning and milling adjustment motor, wherein the turning and milling adjustment motor is fixedly installed in the turning and milling rotating seat; A seventh gear fixedly connected to the output end of the turning and milling adjustment motor, a plurality of sets of eighth gears are meshedly arranged on the outer side of the seventh gear, the eighth gear is rotatably arranged in the turning and milling rotating seat, and a universal turning and milling cutter is fixedly connected to one side of the eighth gear; The method for grinding a gear workpiece by a gear grinding machine tool specifically comprises: During operation, a mechanical arm or manipulator is used to load the gear workpiece, and the gear workpiece is fixedly connected to one end of the gear fixing roller by fastening bolts. The PLC controller controls the clamping working motor and the clamping adjustment motor to start. The clamping adjustment motor starts to drive the first gear and the second gear to rotate, and the second gear drives the third gear to rotate. The third gear drives the first screw to rotate, and the first screw drives the first threaded seat and the workpiece clamping seat to move along the clamping limit groove, so that the workpiece clamping seat clamps and fixes the gear fixing roller and the gear workpiece. After the position of the gear workpiece is fixed, the PLC controller controls the angle adjustment motor to start based on the specifications and model of the gear workpiece, and the angle adjustment motor drives the second screw to rotate, and the rotation of the second screw drives the adjustment sleeve and the displacement limit cylinder to move. When the displacement limit cylinder moves, it can drive the sixth gear, the third screw, the second threaded seat, the swing adjustment motor and the universal turning and milling assembly to swing, so as to adjust the grinding processing angle of the universal turning and milling assembly; After the grinding angle of the universal milling assembly is adjusted, the PLC controller obtains the specifications and models of the gear workpiece, and controls the displacement adjustment motor to start based on the specifications and models of the gear workpiece, and the displacement adjustment motor drives the fourth gear and the fifth gear to rotate, and the fifth gear drives the sixth gear to rotate, and the sixth gear drives the third screw to rotate, so that the third screw drives the second thread seat swing adjustment motor and the universal milling assembly to move, thereby realizing the adjustment of the position of the universal milling assembly; The PLC controller controls the turning and milling adjustment motor to start, the turning and milling adjustment motor drives the seventh gear to rotate, the seventh gear drives the eighth gear to rotate, so that the eighth gear drives the universal turning and milling cutter to rotate, so that the universal turning and milling cutter can adapt to the processing requirements of gear workpieces with different specifications; The PLC controller controls the clamping working motor to start, and the clamping working motor drives the clamping support seat, the workpiece clamping seat, the gear fixing roller and the gear workpiece to rotate. At the same time, the PLC controller controls the turning and milling driving motor to start, and the turning and milling driving motor drives the turning and milling rotating seat and the universal turning and milling cutter to rotate, and realizes the tooth groove grooving processing of the gear workpiece, the gear lower involute, the gear upper involute and the tooth root processing in turn; The workpiece clamping mechanism comprises: A clamping working motor, wherein the clamping working motor is fixedly mounted on a clamping support seat; A workpiece clamping part connected to the clamping working motor, the workpiece clamping part is used to clamp and drive gear workpieces of different specifications; Wherein, the workpiece clamping portion comprises: A clamping support seat, wherein the clamping support seat is arranged on one side of the clamping working motor, and the clamping support seat is fixedly connected to the output end of the clamping working motor, and a plurality of clamping limit grooves are arranged in the clamping support seat; A clamping and adjusting motor, wherein the clamping and adjusting motor is fixedly mounted on the clamping and supporting seat, an output end of the clamping and adjusting motor is fixedly connected to a first gear, a second gear is disposed on one side of the first gear, and the second gear is rotatably mounted in the clamping and supporting seat; At least one set of third gears, the third gears are rotatably arranged in the clamping support seat, the third gears are meshed with the second gears for transmission, one side of the third gear is fixedly connected with a first screw rod, the first screw rod is rotatably arranged in the clamping limit groove, a first threaded seat is threadedly sleeved on the first screw rod, and the first threaded seat is slidably installed in the clamping limit groove; At least one set of workpiece clamping seats, the workpiece clamping seats are detachably mounted on the first threaded seat, a gear fixing roller is arranged in the workpiece clamping seat, and one end of the gear fixing roller is fixedly connected to the gear workpiece by a fastening bolt. 2. The gear grinding method according to claim 1, characterized in that: the method of pre-building a three-dimensional simulation model of a gear workpiece based on gear processing parameters specifically comprises: Identify gear machining parameters of the gear workpiece, and pre-build a rough model of the gear workpiece based on the gear machining parameters; Extract the information of the number of teeth, the number of tooth grooves, the number of involutes, the angle of tooth groove involutes, the tooth profile angle deviation and the tooth lead angle deviation from the gear processing parameters, and input the information of the number of teeth, the number of tooth grooves, the number of involutes, the angle of tooth groove involutes, the tooth profile angle deviation and the tooth lead angle deviation into the 3D modeling system; The 3D modeling system triggers the rough model modification command, renders the information of the number of teeth, number of tooth grooves, number of involutes, tooth groove involute angles, tooth profile angle deviation and tooth lead angle deviation to the rough model of the gear workpiece, and outputs the 3D simulation model and grinding processing parameters.