CN108303244A - A kind of numerical control turret reliability constant speed and acceleration test apparatus and method - Google Patents

Abstract

The invention discloses a kind of numerical control turret reliability constant speed and acceleration test apparatus, including：Ground black iron, numerical control turret, cutting force loading device, spiral lift device, hydraulic station device and linkage control device；Wherein, numerical control turret is mounted on oblique lathe bed base support device；Oblique lathe bed base support device is both secured on ground black iron；Spiral lift device is mounted between two numerical control turrets；Cutting force loading device is fixed on spiral lift device；Hydraulic station device is attached with numerical control turret respectively by oil circuit；Linkage control device control cutting force loading device.The present invention provides a kind of numerical control turret reliability constant speeds and acceleration test apparatus and method, the comparative and analyticity of experimental data can be improved, the accelerated factor of accelerated test can be effectively controlled carrying out the when of testing again, while help to analyze the failure model of knife rest.

Description

A constant speed and accelerated test device and method for the reliability of a numerically controlled turret tool post

technical field

The present invention relates to the technical field of mechanical automation, and more specifically relates to a constant speed and accelerated test device and method for the reliability of a numerically controlled turret tool rest.

Background technique

With the vigorous development of modern industry, CNC lathes have become one of the most widely used equipment in the field of machinery manufacturing. Among them, the CNC turret tool holder is one of the important functional components of CNC lathes, and its reliability has a great influence on the life of the lathe. big impact. The rotation accuracy of the cutter head is an important parameter of the CNC turret tool holder, which affects the consistency of a batch of parts processing, and has a huge impact on the product quality in actual production.

Regarding the data of the accelerated test of the CNC turret tool post, the factory currently focuses on the actual processing data of the tool post with different loads, and the processed samples are the samples required by the factory, and the load on the tool post is also affected by multiple factors. , the data analysis is not strong. Various colleges and universities have not yet perfected the accelerated test theory for complex electromechanical hydraulic products such as CNC turret turrets, and lack of research and development of test equipment. At present, there is no patent for the development of accelerated test devices for CNC turret turrets.

At present, colleges and universities and some machine tool factories in my country have done theoretical research on the accelerated test of complex machine tool functional components, and some achievements have been made in test equipment and evaluation methods. For rolling functional parts, such as the accelerated test method of the ball screw pair and the development of evaluation theory are relatively perfect: use the small sample timing censored reliability test method to determine the test time, load, speed and sample size; use the ball screw pair Life calculation formula, calculation test stress acceleration factor and equivalent acceleration test revolutions, etc. However, regarding the research on the indexing functional parts of the CNC turret tool holder, which belongs to the complex electro-hydraulic system, the current domestic acceleration test theory and test device development are not mature.

Therefore, how to provide a CNC turret tool holder that can not only improve the contrast and analyzability of the experimental data, but also effectively control the acceleration factor of the accelerated test when carrying out the test, and at the same time help to analyze the failure model of the tool holder Reliability constant speed and accelerated test devices and methods are urgent problems to be solved by those skilled in the art.

Contents of the invention

In view of this, the present invention provides a constant-speed and accelerated test device and method for the reliability of a numerically controlled turret turret, which can not only improve the contrast and analyzability of experimental data, but also effectively control the accelerated test when carrying out the test. The acceleration factor of the tool holder also helps to analyze the failure model of the tool holder.

In order to achieve the above object, the present invention provides the following technical solutions:

A constant speed and acceleration test device for the reliability of a CNC turret tool post, including: ground iron, a CNC turret tool post A, a CNC turret tool post B, a cutting force loading device A, a cutting force loading device B, and a spiral lifting device . Hydraulic station device and linkage control device; wherein, the numerical control turret A is installed on the support device A of the inclined bed base; the numerical control turret B is installed on the support device B of the inclined bed base; Both the supporting device A of the inclined bed base and the supporting device B of the inclined bed base are fixed on the horizontal iron;

Described spiral lifting device is installed between described numerical control turret tool rest A and described numerical control turret tool rest B;

The cutting force loading device A and the cutting force loading device B are fixed on the screw lifting device;

Described hydraulic station device is connected with described numerical control turret tool rest A and described numerical control turret tool rest B respectively by oil circuit;

The linkage control device controls the cutting force loading device A and the cutting force loading device B.

Through the above technical scheme, the technical effect of the present invention: the device can not only simulate the cutting force of the actual working condition of the CNC turret tool holder, but the cutting force loading device can also perform constant speed force loading and acceleration force on the two CNC turret tool holders respectively. Loading can better control the test variables and acceleration factors, and improve the analyzability efficiency of the test data. At the same time, the hydraulic station device provides hydraulic oil for the hydraulic cylinder to meet the CNC turret tool holder A and CNC turret that the hydraulic cylinder bears Oil pressure requirements for the maximum cutting force provided by tool post B.

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of the numerical control turret tool post, the support device A of the base of the inclined bed and the support device B of the base of the inclined bed both include: an inclined bed, a connecting plate and an auxiliary positioning plate ; the inclined bed is fixed on the horizontal iron; the connecting plate is provided with a T-shaped slot and installed on the slope of the inclined bed; the auxiliary positioning plate is detachably installed on the The bottom end of the inclined bed is positioned to position the CNC turret tool post A and the CNC turret tool post B.

Through the above technical scheme, the technical effect of the present invention is that the support device of the inclined bed base is used to install the CNC turret tool holder A and the CNC turret tool holder B, and provides more accurate lateral force when loading, which further improves the accuracy of the test data. Analyzable efficiency; In addition, install the auxiliary positioning plate before installing the CNC turret tool holder, and remove it after the tool holder position is fixed.

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of the numerically controlled turret tool rest, the cutting force loading device A and the cutting force loading device B both include: a concave ball head, a loading force rod, a rotating compression parts and hydraulic cylinder support seat;

In the cutting force loading device A, the concave ball head matches the spherical surface of the cutter bar of the CNC turret A; one end of the loading force rod is provided with the concave ball head, and the other end is fixed at a constant speed. Loading hydraulic cylinder; the hydraulic cylinder support seat supports the concave ball head, the loading force rod and the constant speed loading hydraulic cylinder; the rotating compression member is installed on the top of the hydraulic cylinder support seat;

In the cutting force loading device B, the concave ball head matches the spherical surface of the cutter bar of the CNC turret B; one end of the loading force rod is provided with the concave ball head, and the other end is fixed on the accelerated loading hydraulic cylinder; the hydraulic cylinder supporting seat supports the concave ball head, the loading force rod and the constant-speed loading hydraulic cylinder; the rotating compression member is installed on the top of the hydraulic cylinder supporting seat.

Through the above-mentioned technical scheme, the technical effect of the present invention is: when loading, the concave spherical head of the loading force rod cooperates with the cutter bar spherical surface of the numerical control turret tool rest, greatly reducing the bearing force of the hydraulic cylinder, thereby protecting the hydraulic cylinder.

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of the numerical control turret tool post, the spiral lifting device includes: a base, a motor, a coupling A, a coupling B, a bevel gear reducer, a lifting Lead screw, loading device placement table, photoelectric encoder, auxiliary support spring and bearing; the base is installed on the horizontal iron; the motor is fixed on the base; the output end of the motor passes through the Coupling B is connected with the bevel gear reducer; the lifting screw is arranged perpendicular to the bevel gear reducer, and is connected with the output end of the bevel gear reducer through the coupling A; The lifting screw is fixed by the bearing, and the top of the lifting screw is provided with the photoelectric encoder; the lifting screw drives the lifting of the loading device placement table; the loading device placement table passes through The auxiliary support spring is connected with the base.

Through the above technical solution, the technical effect of the present invention is: the driving motor drives the lifting screw to rotate through the transmission of the coupling B, the bevel gear reducer and the coupling A, and further drives the loading device placement table to move up and down to the designated position , to provide the basis for the subsequent implementation, so that the cutting force loading device A and cutting force loading device B can move the position, thereby driving the CNC turret tool post A and CNC turret tool post B to move, increasing the flexibility of the test and Versatility.

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of the numerical control turret tool post, the loading device placement table includes: a gear drive motor, a fixed gear, a moving gear, a planetary gear A and a planetary gear B; The gear drive motor drives the movable gear to rotate; the rotation of the movable gear drives the planetary gear A and the planetary gear B to rotate; the planetary gear A and the planetary gear B are both meshed with the fixed gear; The cutting force loading device A is fixed on the planetary wheel A; the cutting force loading device B is fixed on the planetary wheel B.

Through the above technical scheme, the technical effect of the present invention is that the cutting force loading device A is fixed on the planetary wheel A, and the cutting force loading device B is fixed on the planetary wheel B, so that the cutting force loading device A and the cutting force loading device B are fixed on the planetary wheel The angle is adjusted under the driving force to realize the synchronous relative movement of the constant-speed loading hydraulic cylinder and the accelerated loading hydraulic cylinder, thereby driving the CNC turret tool post A and the CNC turret tool post B to rotate, increasing the flexibility and versatility of the test .

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of the numerical control turret tool post, the linkage control device includes: a control cabinet, a voltage transformer and a pressure detection gauge; The constant speed loading hydraulic cylinder is connected with the acceleration loading hydraulic cylinder; the pressure changing device is installed on the oil inlet of the acceleration loading hydraulic cylinder; the pressure detection gauge is installed on the oil outlet of the acceleration loading hydraulic cylinder on the way.

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of the numerically controlled turret turret, the pressure changing device includes: an initial oil circuit, a left baffle, a force transmission spring, a right baffle, and a pressure changing oil Road, gap adjustment screw, block; the initial oil circuit is connected with the left baffle, and a spring stabilizing pin A is arranged on the left baffle; the variable pressure oil circuit is connected with the right baffle The plate is connected, and the spring stabilizing pin B is set on the right side baffle; the force transmission spring is set between the spring stabilizing pin A and the spring stabilizing pin B; the stopper is installed on the right On the side baffle; the gap adjustment screw is arranged on the stopper.

Through the above technical scheme, the technical effect of the present invention: the left and right baffles are subjected to the same force, and the oil pressure can be changed by changing the force area of the right baffle; the block is installed on the right baffle, and the gap adjustment screw can Adjust the force bearing area of the right side baffle so as to pressurize the transformer oil circuit and carry out the acceleration test.

Preferably, in the above-mentioned constant speed and accelerated test device for the reliability of a numerically controlled turret tool rest, the control cabinet includes: a host computer, a programmable controller, an AD converter, and a DA converter; the host computer and the programmable Programmable controller serial port communication; the uplink direction of the programmable controller is electrically connected with the tool post controllers of the numerical control turret tool post A and the numerical control turret tool post B respectively; the upper computer passes through the The DA converter controls the constant speed loading hydraulic cylinder and the acceleration loading hydraulic cylinder respectively; at the same time, the signal obtained by the sensor electrically connected to the constant speed loading hydraulic cylinder and the acceleration loading hydraulic cylinder is passed through the AD The converter feeds back to the upper computer.

Through the above-mentioned technical scheme, the technical effect of the present invention: it can not only realize the automatic control of the cutting force loading device, but also realize the automatic control of the accelerated test loading process, simplify the test steps and shorten the test preparation time.

A constant speed and accelerated test method for the reliability of a numerically controlled turret tool post, characterized in that the specific steps are as follows:

Step 1: Loading the CNC turret tool rest A and the CNC turret tool rest B, including: the loading of the position of the loading device placement table and the control loading of the loading process;

Step 2: After the loading is completed, detecting the force status of the CNC turret A and the CNC turret B includes: detecting the numerical control turret A and the CNC turret The detection of the force status of B mainly detects whether the amplitude, frequency, and waveform transformation spectrum of the loading force meet the requirements, and then judges whether the accelerated test can be carried out.

Through the above-mentioned technical scheme, the technical effect of the present invention: the method carries out the normal speed test and the accelerated test of the reliability of the CNC turret tool rest, and the accelerated test results obtained are more convincing, and the test time is shortened simultaneously.

Preferably, in the above-mentioned a kind of numerical control turret tool rest reliability constant speed and accelerated test method, the specific steps of loading the position of the loading device placement platform described in the step 1 include:

The location is loaded, the specific steps are as follows:

Step 1: Input the value of the height position to be reached by the loading device placement table;

Step 2: Drive the motor, drive the lifting screw to rotate through the transmission of the coupling B, the bevel gear reducer, and the coupling A, and further drive the loading device placement table to move up and down to the specified location;

Step 3: the photoelectric encoder feeds back the current position of the loading device placement table to the control system;

Step 4: The control system judges whether the current position of the loading device placement table is the specified position, if yes, then end, if not, return to the second step.

The specific steps of the controlled loading of the described loading process include:

The first step: start the control cabinet, input the setting value of the photoelectric encoder on the lifting screw, and judge whether the cutting force loading device A and the cutting force loading device B reach the specified height in the vertical direction, if so , then proceed to the second step; otherwise, drive the motor to adjust the height of the cutting force loading device A and the cutting force loading device B.

Step 2: The locking sensing device on the loading device placement platform judges whether it is locked, if so, input the test time, and then the control cabinet sends a loading command, and the normal speed loading hydraulic cylinder and the accelerated loading hydraulic cylinder are loaded; otherwise, the first step is carried out. step.

The third step: detect whether the knife rest fails, if so, the control cabinet sends a stop command, otherwise the fourth step is performed;

Step 4: Determine whether the loading test has reached the input time, if so, the control cabinet sends an unloading command, the constant-speed loading hydraulic cylinder and the accelerated loading hydraulic cylinder are unloaded and returned to their original positions; if not, the control cabinet Continue to send loading instructions, and the constant-speed loading hydraulic cylinder and the accelerated loading hydraulic cylinder perform loading until the test set time is met.

Through the above-mentioned technical scheme, the technical effect of the present invention: the method simultaneously feeds back the load force conditions of the CNC turret A and the CNC turret B, and does not need to adjust the CNC turret A and the CNC turret during the test. Tower turret B. That is to say, this detection method can ensure the real-time monitoring of the load force of CNC turret tool post A and CNC turret tool post B at any time during the test, and can ensure the reliability of the accelerated test results.

Preferably, in above-mentioned a kind of numerical control turret tool rest reliability constant speed and accelerated test method, in described step 2, concrete steps are as follows:

The first step: open the control cabinet and open the force sensor;

Second step: collect the amplitude data of the loading force on the described constant-speed loading hydraulic cylinder and the described accelerated loading hydraulic cylinder, and judge whether it meets the setting requirements of the loading force amplitude acceleration test;

The 3rd step: collect the frequency data of the loading force on the described constant speed loading hydraulic cylinder and the described acceleration loading hydraulic cylinder, judge whether to meet the setting requirements of the loading force frequency acceleration test;

The 4th step: gather the waveform transformation spectrum data of the loading force on described normal speed loading hydraulic cylinder and described accelerated loading hydraulic cylinder, judge whether the acceleration test of load force waveform transformation spectrum meets the set requirements;

Step 5: If all meet the test setting requirements, control the constant-speed loading hydraulic cylinder and the accelerated loading hydraulic cylinder to load and carry out the test.

Through the above-mentioned technical scheme, the technical effect of the present invention: it can not only realize the automatic control of the cutting force loading device, but also realize the automatic control of the accelerated test loading process, simplify the test steps and shorten the test preparation time.

It can be seen from the above-mentioned technical solutions that, compared with the prior art, the present invention discloses a device and method for constant speed and accelerated test of reliability of CNC turret tool post, which can improve the contrast and analyzability of experimental data, It can also effectively control the acceleration factor of the accelerated test when carrying out the test, and at the same time help to analyze the failure model of the tool holder. The drive motor, through the transmission of coupling B, bevel gear reducer and coupling A, drives the lifting screw to rotate, and further drives the loading device placement table to move up and down to the designated position, providing a basis for subsequent implementation, so that the cutting The force loading device A and the cutting force loading device B can move the position, thereby driving the CNC turret tool post A and the CNC turret tool post B to move; the cutting force loading device A is fixed on the planetary wheel A, and the cutting force loading device B is fixed On the planetary wheel B, the cutting force loading device A and the cutting force loading device B are driven by the planetary wheel to adjust the angle, thereby driving the CNC turret tool post A and the CNC turret tool post B to rotate, which increases the flexibility of the test and versatility; the testing of the stress status of CNC turret tool post A and CNC turret tool post B mainly checks whether the amplitude, frequency, and waveform transformation spectrum of the loading force meet the requirements, and then carries out the accelerated test.

Compared with the prior art, the present invention has beneficial technical effects:

1. The present invention provides a reliability constant speed and acceleration test device for CNC turret tool holders, which can simultaneously perform reliability constant speed tests and accelerated tests on two CNC turret tool holders; The cutting force of the actual working condition, the cutting force loading device can also perform constant speed force loading and accelerated force loading on the two CNC tool holders, which can better control the test variables and acceleration factors, and improve the analyzability and efficiency of the test data. It has significant guiding significance for the actual processing and production of CNC turret tool post.

2, a kind of numerical control turret tool post reliability constant speed and accelerated test method provided by the present invention can carry out numerical control turret tool post reliability constant speed test and accelerated test at the same time, the accelerated test result obtained is more convincing, shortens simultaneously The test method is more valuable if the test time is reduced.

3. The present invention provides a numerical control turret tool post reliability constant speed and accelerated test method to obtain the load force conditions of the numerical control turret tool post A and the numerical control turret tool post B at the same time, without the need to adjust the numerical control during the test. Turret tool post A and CNC turret tool post B. That is to say, it can ensure the real-time monitoring of the load force of the CNC turret tool post A and the CNC turret tool post B at any time during the test, which can ensure the reliability of the accelerated test results.

4. The present invention provides a CNC turret tool post reliability constant speed and acceleration test device which also has automatic control capability, which can not only realize the automatic control of the cutting force loading device, but also realize the automatic control of the acceleration test loading process , Simplify the test steps and shorten the test preparation time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Accompanying drawing of Fig. 1 is the overall structural diagram of the present invention;

Fig. 2 accompanying drawing is the structural diagram of the supporting device of the inclined bed base of the present invention;

Fig. 3 accompanying drawing is the structural diagram of cutting force loading device of the present invention;

Accompanying drawing of Fig. 4 is the structural diagram of spiral lifting device of the present invention;

Fig. 5 accompanying drawing is the structural diagram of transformer device of the present invention;

Fig. 6 accompanying drawing is the structure diagram of loading device placement table of the present invention;

Accompanying drawing of Fig. 7 is the structural diagram of spiral lifting device of the present invention;

Fig. 8 accompanying drawing is the location loading flowchart of the present invention;

Figure 9 is a flow chart of the control loading of the present invention.

In the figure: 1 CNC turret tool post A, 11 Inclined bed base support device A, 2 CNC turret tool post B, 21 Inclined bed base support device B, 3 Cutting force loading device A, 4 Cutting force loading device B. 5 screw lifting device, 6 hydraulic station device, 7 linkage control device, 121 inclined bed, 122 connecting plate, 123 auxiliary positioning plate, 341 concave ball head, 342 loading force rod, 343 rotating compression part, 344 hydraulic cylinder support Seat, 500 Base, 501 Motor, 502 Coupling A, 503 Coupling B, 504 Bevel Gear Reducer, 505 Lifting Screw, 506 Loading Device Placement Table, 5061 Gear Drive Motor, 5062 Fixed Gear, 5063 Moving Gear , 5064 Planetary gear A, 5065 Planetary gear B, 507 Photoelectric encoder, 508 Auxiliary support spring, 509 Bearing, 71 Control cabinet, 72 Transformer device, 73 Pressure detection gauge, 721 Initial oil circuit, 722 Left baffle, 723 Power transmission spring, 724 right side baffle plate, 725 variable pressure oil circuit, 726 gap adjusting screw, 727 block.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

The embodiment of the invention discloses a constant speed and acceleration test device and method for the reliability of the CNC turret tool post, which can not only simulate the cutting force of the actual working condition of the CNC turret tool post, but also the cutting force loading device can test the reliability of two CNC turrets. The turret turret is loaded with constant speed force and accelerated force respectively, which can better control the test variables and acceleration factors, and improve the efficiency of test data analysis.

Example

Please refer to attached drawing 1, a constant speed and accelerated test device for reliability of CNC turret tool post, including: horizontal iron, CNC turret tool post A1, CNC turret tool post B2, cutting force loading device A3, cutting force loading Device B4, screw lifting device 5, hydraulic station device 6 and linkage control device 7; CNC turret tool post A1 is installed on the support device A11 of the inclined bed base; CNC turret tool post B2 is installed on the support device B21 of the inclined bed base The support device A11 of the base of the inclined bed and the support device B21 of the base of the inclined bed are fixed on the horizontal iron; the spiral lifting device 5 is installed between the CNC turret tool post A1 and the CNC turret tool post B2; the cutting force loading device A3 and the cutting force loading device B4 are fixed on the screw lifting device 5; the hydraulic station device 6 is respectively connected with the CNC turret tool post A1 and the CNC turret tool post B2 through the oil circuit; the linkage control device 7 controls the cutting force loading device A3 and Cutting force loading device B4.

In order to further optimize the above-mentioned technical solution, please refer to accompanying drawing 2, both the support device A11 of the inclined bed base and the support device B21 of the inclined bed base include: the inclined bed 121, the connecting plate 122 and the auxiliary positioning plate 123; the inclined bed 121 is fixed On the horizontal iron; the connecting plate 122 is provided with a T-shaped slot and installed on the slope of the inclined bed 121; the auxiliary positioning plate 123 is detachably installed on the bottom of the inclined bed 121 to position the CNC turret cutter Frame A1 and CNC turret tool post B2.

In order to further optimize the above-mentioned technical scheme, please refer to accompanying drawing 3, cutting force loading device A3 and cutting force loading device B4 all comprise: concave ball head 341, loading force rod 342, rotating tightening part 343 and hydraulic cylinder support seat 344;

In the cutting force loading device A3, the concave ball head 341 is matched with the spherical surface of the cutter bar of the CNC turret tool post A1; one end of the loading force rod 342 is provided with a concave ball head 341, and the other end is fixed to the constant speed loading hydraulic cylinder 31; The support seat 344 supports the concave ball head 341, the loading force rod 342 and the constant speed loading hydraulic cylinder 31; the rotating compression member 343 is installed on the top of the hydraulic cylinder support seat 344;

In the cutting force loading device B4, the concave ball head 341 is matched with the spherical surface of the cutter bar of the CNC turret tool holder B2; one end of the loading force rod 342 is provided with a concave ball head 341, and the other end is fixed to the acceleration loading hydraulic cylinder 41; the hydraulic cylinder supports The seat 344 supports the concave ball head 341 , the loading rod 342 and the constant speed loading hydraulic cylinder 31 ;

In order to further optimize the above-mentioned technical scheme, please refer to accompanying drawing 4, the spiral lifting device 5 comprises: base 500, motor 501, coupling A502, coupling B503, bevel gear reducer 504, lifting screw 505, loading device placement Platform 506, photoelectric encoder 507, auxiliary support spring 508 and bearing 509; base 500 is installed on the ground level iron; motor 501 is fixed on the base 500; the output end of motor 501 passes through coupling B503 and bevel gear reducer 504 Connect; the lifting screw 505 is set perpendicular to the bevel gear reducer 504, and is connected with the output end of the bevel gear reducer 504 through the coupling A502; the lifting screw 505 is fixed by the bearing 509, and the lifting screw 505 The top is provided with a photoelectric encoder 507; the lifting screw 505 drives the lifting of the loading device placing table 506; the loading device placing table 506 is connected with the base 500 through the auxiliary support spring 508.

In order to further optimize the above technical solution, please refer to accompanying drawing 6, the loading device placement table 506 includes: gear drive motor 5061, fixed gear 5062, movable gear 5063, planetary gear A5064 and planetary gear B5065; gear drive motor 5061 drives movable gear 5063 to rotate The rotation of the movable gear 5063 drives the rotation of the planetary gear A5064 and the planetary gear B5065; both the planetary gear A5064 and the planetary gear B mesh with the fixed gear 5062; the cutting force loading device A3 is fixed on the planetary gear A5064; the cutting force loading device B4 is fixed on the planetary gear on B5065;

In order to further optimize the above-mentioned technical solution, the linkage control device 7 includes: a control cabinet 71, a voltage transforming device 72 and a pressure detection gauge 73; the control cabinet 71 is respectively connected to the constant-speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41 through the oil circuit; The pressure changing device 72 is installed on the oil inlet of the acceleration loading hydraulic cylinder 41 ; the pressure detection gauge 73 is installed on the oil outlet of the acceleration loading hydraulic cylinder 41 .

In order to further optimize the above-mentioned technical solution, please refer to Appendix 5. The pressure changing device 72 includes: an initial oil circuit 721, a left baffle 722, a force transmission spring 723, a right baffle 724, a pressure changing oil circuit 725, and a gap adjustment screw 726 , block 727; the initial oil circuit 721 is connected with the left baffle 722, and the left baffle 722 is provided with a spring stabilizing pin A728; the variable pressure oil circuit 725 is connected with the right baffle 724, and the right baffle 724 A spring stabilizing pin B729 is arranged on the top; a force transmission spring 723 is arranged between the spring stabilizing pin A728 and the spring stabilizing pin B729; the stopper 727 is installed on the right side baffle plate 724;

Please refer to accompanying drawings 7-9, a constant speed and accelerated test method for the reliability of a CNC turret tool post, the specific steps are as follows:

Step 1: Loading the CNC turret tool rest A1 and the CNC turret tool rest B2, including: the position loading of the loading device placement table 506 and the control loading of the loading process;

Step 2: After the loading is completed, the testing of the stress status of the CNC turret tool post A1 and the CNC turret tool post B2 includes: testing the stress status of the CNC turret tool post A1 and the CNC turret tool post B2 mainly Detect whether the amplitude, frequency, and waveform transformation spectrum of the loading force meet the requirements, and then judge whether the acceleration test can be carried out.

The specific steps of loading the position of the loading device placement table 506 in step 1 include:

The first step: input the value of the height position to be reached by the loading device placement table 506;

Second step: the driving motor 501 drives the lifting screw 505 to rotate through the transmission of the shaft coupling B503, the bevel gear reducer 504, and the shaft coupling A502, and further drives the loading device placement table 506 to move up and down to the designated position;

Step 3: The photoelectric encoder 507 feeds back the current position of the loading device placement table 506 to the control system;

Step 4: The control system judges whether the current position of the loading device placement table 506 is the designated position, if yes, then end, if not, return to the second step.

The specific steps of controlled loading in the process of applying load include:

The first step: start the control cabinet, input the setting value of the photoelectric encoder 507 on the lifting screw 505, judge whether the cutting force loading device A3 and the cutting force loading device B4 reach the specified height in the vertical direction, and if so, proceed to the second step Step two; otherwise, drive the motor 501 to adjust the heights of the cutting force loading device A3 and the cutting force loading device B4.

Step 2: The locking sensing device on the loading device placement platform judges whether it is locked, if so, input the test time, then the control cabinet 71 sends a loading command, and the normal speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41 perform loading; Otherwise proceed to the first step.

The third step: detect whether the knife rest fails, if so, the control cabinet 71 sends a stop command, otherwise proceed to the fourth step;

Step 4: Determine whether the loading test has reached the input time, if so, the control cabinet sends an unloading command, the constant speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41 are unloaded, and return to the original position; if not, the control cabinet 71 continues to send the loading command, The constant-speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41 are loaded until the test set time is met.

In step 2, the specific steps are as follows:

The first step: open the control cabinet 71, open the force sensor;

Second step: collect the amplitude data of the loading force on the constant speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41, and judge whether it meets the setting requirements of the loading force amplitude acceleration test;

The 3rd step: collect the frequency data of the loading force on the constant speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41, judge whether to meet the setting requirements of the loading force frequency acceleration test;

The 4th step: gather the waveform transformation spectrum data of the loading force on the constant speed loading hydraulic cylinder 31 and the acceleration loading hydraulic cylinder 41, judge whether the acceleration test of the loading force waveform transformation spectrum meets the set requirements;

Step 5: If all meet the test setting requirements, control the constant speed loading hydraulic cylinder 31 and the accelerated loading hydraulic cylinder 41 to carry out loading, and carry out the test.

The specific requirements for setting the load force amplitude, frequency, and waveform transformation spectrum in step 2 are as follows:

Table 1 Load force amplitude loading table

Table 2 load force frequency loading table

Table 3 Load force waveform transformation spectrum

Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiment, because it corresponds to the method disclosed in the embodiment, it is relatively simple to describe, and for relevant parts, please refer to the description of the method part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a kind of numerical control turret reliability constant speed and acceleration test apparatus, including：Ground black iron, which is characterized in that further include： Numerical control turret A (1), numerical control turret B (2), cutting force loading device A (3), cutting force loading device B (4), spiral Lifting gear (5), hydraulic station device (6) and linkage control device (7)；

Wherein, the numerical control turret A (1) is mounted on oblique lathe bed base support device A (11)；The numerical control turret B (2) is mounted on oblique lathe bed base support device B (21)；The oblique lathe bed base support device A (11) and the oblique lathe bed bottom Seat supports device B (21) is both secured on described ground black iron；

The spiral lift device (5) is mounted between the numerical control turret A (1) and the numerical control turret B (2)；

The cutting force loading device A (3) and the cutting force loading device B (4) are fixed on the spiral lift device (5) On；

The hydraulic station device (6) by oil circuit respectively with the numerical control turret A (1) and the numerical control turret B (2) It is attached；

The linkage control device (7) controls the cutting force loading device A (3) and the cutting force loading device B (4).

2. a kind of numerical control turret reliability constant speed according to claim 1 and acceleration test apparatus, which is characterized in that The oblique lathe bed base support device A (11) and the oblique lathe bed base support device B (21) include：Oblique lathe bed (121) connects Fishplate bar (122) and auxiliary positioning plate (123)；The oblique lathe bed (121) is fixed on described ground black iron；The connecting plate (122) On offer T-slot, and on the inclined-plane of the oblique lathe bed (121)；The auxiliary positioning plate (123) is with dismountable side Formula is mounted on the bottom end of the oblique lathe bed (121), positions the numerical control turret A (1) and the numerical control turret B (2).

3. a kind of numerical control turret reliability constant speed according to claim 1 and acceleration test apparatus, which is characterized in that The cutting force loading device A (3) and the cutting force loading device B (4) include：Concave surface bulb (341), loading force bar (342), rotation constriction (343) and Hydraulic Cylinder Pedestal Used (344)；

In the cutting force loading device A (3), the knife bar ball of the concave surface bulb (341) and the numerical control turret A (1) Face matches；Described loading force bar (342) one end is provided with the concave surface bulb (341), and the other end is fixed on constant speed load liquid Cylinder pressure (31)；The Hydraulic Cylinder Pedestal Used (344) supports the concave surface bulb (341), the loading force bar (342) and described normal Fast loading hydraulic cylinder (31)；The rotation constriction (343) is mounted at the top of the Hydraulic Cylinder Pedestal Used (344)；

In the cutting force loading device B (4), the knife bar ball of the concave surface bulb (341) and the numerical control turret B (2) Face matches；Described loading force bar (342) one end is provided with the concave surface bulb (341), and the other end is fixed on accelerated loading liquid Cylinder pressure (41)；The Hydraulic Cylinder Pedestal Used (344) supports the concave surface bulb (341), the loading force bar (342) and described normal Fast loading hydraulic cylinder (31)；The rotation constriction (343) is mounted at the top of the Hydraulic Cylinder Pedestal Used (344).

4. a kind of numerical control turret reliability constant speed according to claim 3 and acceleration test apparatus, which is characterized in that The spiral lift device (5) includes：Pedestal (500), motor (501), shaft coupling A (502), shaft coupling B (503), bevel gear Retarder (504), elevating screw (505), loading device mounting table (506), photoelectric encoder (507), Auxiliary support spring (508) and bearing (509)；The pedestal (500) is mounted on described ground black iron；The motor (501) is fixed on the pedestal (500) on；The output end of the motor (501) is carried out by the shaft coupling B (503) and the conic reducer (504) Connection；The elevating screw (505) is arranged perpendicular to the conic reducer (504), and passes through the shaft coupling A (502) It is attached with the output end of the conic reducer (504)；The elevating screw (505) by the bearing (509) into Row is fixed, and the top of the elevating screw (505) is provided with the photoelectric encoder (507)；Elevating screw (505) band Move the lifting of the loading device mounting table (506)；The loading device mounting table (506) passes through the Auxiliary support spring (508) it is attached with the pedestal (500).

5. a kind of numerical control turret reliability constant speed according to claim 4 and acceleration test apparatus, which is characterized in that The loading device mounting table (506) includes：Gear drive motor (5061), fixed gear (5062), moving gear (5063), planet Take turns A (5064) and planetary gear B (5065)；The gear drive motor (5061) drives moving gear (5063) rotation；It is described Moving gear (5063) rotation drives the planetary gear A (5064) and the planetary gear B (5065) rotations；The planetary gear A (5064) it is engaged with the fixed gear (5062) with the planetary gear B；The cutting force loading device A (3) is fixed on described On planetary gear A (5064)；The cutting force loading device B (4) is fixed on the planetary gear B (5065).

6. a kind of numerical control turret reliability constant speed according to claim 1 and acceleration test apparatus, which is characterized in that The linkage control device (7) includes：Switch board (71), potential device (72) and pressure detecting table (73)；The switch board (71) it is attached respectively with the constant speed loading hydraulic cylinder (31) and the accelerated loading hydraulic cylinder (41) by oil circuit；It is described Potential device (72) is mounted on the in-line of the accelerated loading hydraulic cylinder (41)；The pressure detecting table (73) is mounted on institute On the vent line for stating accelerated loading hydraulic cylinder (41).

7. a kind of numerical control turret reliability constant speed according to claim 6 and acceleration test apparatus, which is characterized in that The potential device (72) includes：Initial oil circuit (721), left side baffle (722), power transmission spring (723), right-hand apron (724), Transformation oil circuit (725) adjusts gap screw (726), block (727)；The initial oil circuit (721) and the left side baffle (722) into Row connects, and spring is provided on the left side baffle (722) and stablizes pin A (728)；The transformation oil circuit (725) and the right side Baffle (724) is attached, and spring is provided on the right-hand apron (724) and stablizes pin B (729)；The spring stablizes pin A (728) it is provided with the power transmission spring (723) between spring stabilization pin B (729)；The block (727) is mounted on institute It states on right-hand apron (724)；The tune gap screw (726) is provided on the block (727).

8. a kind of numerical control turret reliability constant speed and accelerated test method, which is characterized in that be as follows：

Step 1：The numerical control turret A (1) and the numerical control turret B (2) are loaded, including：The load The position of device mounting table (506) loads and applies the control load of loading；

Step 2：After the completion of load, to the force-bearing situation of the numerical control turret A (1) and the numerical control turret B (2) into Row detects：The force-bearing situation of the numerical control turret A (1) and the numerical control turret B (2) is detected mainly Whether the amplitude, frequency, waveform conversion spectrum for detecting loading force meet the requirements, and then judge whether that accelerated test can be carried out.

9. a kind of numerical control turret reliability constant speed according to claim 8 and accelerated test method, which is characterized in that The position of loading device mounting table (506) described in the step 1 loads specific steps：

The first step：Input loading device mounting table (506) the height and position numerical value to be reached；

Second step：The motor (501) is driven, by the shaft coupling B (503), the conic reducer (504), described The transmission of shaft coupling A (502) drives elevating screw (505) rotation, is further driven to the loading device mounting table (506) It moves up and down to designated position；

Third walks：Loading device mounting table (506) current location is fed back to control system by the photoelectric encoder (507) System；

4th step：Control system judges whether loading device mounting table (506) current location is designated position, if so, Terminate, if it is not, returning to second step；

The control for applying loading loads specific steps：

The first step：Start switch board, input the setting value of photoelectric encoder (507) on the elevating screw (505), described in judgement Whether cutting force loading device A (3) and the cutting force loading device B (4) reach specified altitude assignment in the vertical direction, if so, Then carry out second step；Otherwise the motor (501) is driven to add to adjust the cutting force loading device A (3) and the cutting force Carry the height for setting (4) B；Second step：Locking sensing device on the loading device mounting table (506) judges whether to lock, If then inputting test period, then the switch board (71) sends load instruction, the constant speed loading hydraulic cylinder (31) and institute Accelerated loading hydraulic cylinder (41) is stated to be loaded；Otherwise the first step is carried out；

Third walks：Whether detection knife rest fails, if so, the switch board (71) sends halt instruction, otherwise carries out the 4th Step；

4th step：Judge whether load test reaches input time, if so, the switch board (71) sends unloading command, it is described Constant speed loading hydraulic cylinder (31) and the accelerated loading hydraulic cylinder (41) are unloaded, and original position is retracted；If it is not, the switch board (71) continuing to send load instruction, the constant speed loading hydraulic cylinder (31) and the accelerated loading hydraulic cylinder (41) are loaded, Until meeting experiment setting time.

10. a kind of numerical control turret reliability constant speed according to claim 8 and accelerated test method, feature exist In in the step 2, being as follows：

The first step：The switch board (71) is opened, force snesor is opened；

Second step：Acquire the amplitude of the constant speed loading hydraulic cylinder (31) and the loading force on the accelerated loading hydraulic cylinder (41) Data judge whether to meet loading force amplitude accelerated test sets requirement；

Third walks：Acquire the frequency of the constant speed loading hydraulic cylinder (31) and the loading force on the accelerated loading hydraulic cylinder (41) Data judge whether to meet loading force frequency accelerated test sets requirement；

4th step：Acquire the waveform of the constant speed loading hydraulic cylinder (31) and the loading force on the accelerated loading hydraulic cylinder (41) Modal data is converted, judges whether that loading force waveform conversion spectrum accelerated test meets sets requirement；

5th step：If equal Pass Test sets requirement, controls the constant speed loading hydraulic cylinder (31) and the accelerated loading hydraulic pressure Cylinder is loaded on (41), carries out experiment.