TW201409195A - Method capable of simultaneously performing thermal deformation compensation to multiple processing machines - Google Patents

Abstract

Provided is a method capable of simultaneously performing thermal deformation compensation to multiple processing machines, which is applied to a computer system. The computer system has a thermal deformation compensation application program interface capable of connecting with processing machines of specific brands, respectively. Furthermore, a plurality of sensors are arranged on each processing machine for detecting and obtaining the operation information required by the thermal deformation compensation application program interface. Through the thermal deformation compensation application program interface, the compensation value of each processing machine can be calculated, which is then sent back to each processing machine for respectively performing compensation operation.

Description

Method for performing thermal deformation compensation on multiple processing machines at the same time

The invention relates to the thermal deformation compensation operation of the processing machine, in particular to a method for simultaneously performing thermal deformation compensation on a plurality of processing machines.

For example, the thermal error compensation module and device disclosed in the new patents No. M370780 and M361653 can only detect the temperature change value on the mobile positioning machine by a plurality of temperature sensing components for a single machine. After the thermal error compensation value is calculated by the processor, it is transmitted to the motion controller of the mobile positioning machine, and the motion controller performs the thermal error compensation action of the mobile positioning machine. However, it is not possible to monitor and compensate multiple machines at the same time, and it is not possible to adjust the compensation output and the selection compensation mode in real time according to the position or speed of the machine. Therefore, the calculated thermal error compensation value is still not accurate enough.

Another example is the invention patent No. I314078 in China, which uses the macro program inside the controller of the processing machine to match the rotation speed of the processing machine, and feeds back the temperature signal of the processing machine through the temperature sensor to derive the calculation of each speed section. The amount of deformation compensation. However, since the compensation program is built in the controller, it can only be used for a single processing machine, and it is not possible to monitor and compensate multiple machines at the same time, and it is not possible to adjust the compensation output in real time depending on the position of the machine or the change of the speed. And the choice of compensation method, so there are still deficiencies and need to improve.

In view of this, how to improve the above-mentioned defects is the focus of the present invention.

The main object of the present invention is to provide a method for simultaneously performing thermal deformation compensation on a plurality of processing machines, which can simultaneously perform simultaneous monitoring, thermal deformation calculation and thermal deformation compensation on a plurality of processing machines, and can ensure a machine tool. Processing accuracy.

To achieve the foregoing objective, the present invention provides a method for simultaneously performing thermal deformation compensation for a plurality of processing machines, the method being applied to a computer system having a thermal deformation compensation application interface, the thermal deformation compensation application A plurality of thermal error mathematical models respectively corresponding to a specific brand processing machine are established in the interface, and a plurality of sensors are respectively disposed on each processing machine, and the sensors on each processing machine can separately detect and obtain the processing. The operation information of the machine, and the operation information detected by the sensors on each processing machine is transmitted to the thermal deformation compensation application interface, and the corresponding thermal error mathematical model in the thermal deformation compensation application interface is calculated. The compensation values of each processing machine are then transmitted back to each processing machine to perform compensation operations separately.

Wherein, in the thermal deformation compensation application interface, at least a multi-variable linear regression or a multi-variable nonlinear regression method is established to establish a thermal error model corresponding to each processing machine, so that the thermal deformation compensation application interface can be compensated by a single model or multiple models. Mode, choose to input the compensation value into the error compensation table before interpolation or compensate for the external origin drift.

Furthermore, the thermal deformation compensation application interface can be connected to a corresponding processing machine through one of a network, a radio frequency or a Bluetooth communication mode, so that the compensation value calculated by the thermal deformation compensation application interface can be calculated. Transfer to each processing machine.

Preferably, the sensors on each processing machine include at least a temperature sensor and a displacement sensor.

Further, each processing machine further has a capturing device, and each of the capturing devices is respectively connected with the sensor on the corresponding processing machine, and can receive the operation information measured by the sensor; further, the heat The deformation compensation application mask has a sequence, and the thermal deformation compensation application interface sequentially obtains the required operation information from the corresponding capture device according to the sequence, and the processing device of each processing machine can pass through the network. The radio frequency (RF) or Bluetooth (BT) communication method is connected to the thermal deformation compensation application interface of the computer system.

Of course, the present invention may be different in some of the components, or the arrangement of the components, but the selected embodiments are described in detail in the present specification.

The present invention provides a method for simultaneously performing thermal deformation compensation on a plurality of processing machines. The method is applied to a computer system. As shown in FIG. 1, the computer system 10 has a thermal deformation compensation application interface 11, and The thermal deformation compensation application interface 11 is provided with a plurality of thermal error mathematical models 31 respectively corresponding to a specific brand processing machine, and the thermal deformation compensation application interface 11 is established by at least a linear or multiple variable nonlinear regression method. There is a thermal error mathematical model 31 corresponding to each processing machine, and the thermal deformation compensation application interface 11 can be a single mode or multiple model compensation mode, and the compensation value is selected to be input to the error compensation table before interpolation or compensated for external origin drift. .

In addition, a plurality of sensors 24 are respectively disposed on the main shaft 22 of the processing machine 21 and the servo feed system 23, so as to be able to measure the thermal error caused by the spindle 22 of the processing machine 21 and the servo feed system 23 during operation. A computing information, and the sensor 24 on each processing machine 21 includes other sensors such as a temperature sensor and a displacement sensor, so that each sensor 24 can estimate the instantaneous position of the processing machine 21 and the coordinate position. Operational information.

Each of the sensors 24 can detect and obtain different operation information according to the rotation speed and temperature of the main shaft 22 and the feed position and temperature of the servo feed system 23, and each operation information corresponds to each. a thermal error mathematical model 31, and thereby enabling the thermal deformation compensation application interface 11 to perform a compensation mode of the single model or multiple models, and instantly calculate the compensation value of the processing machine 21 to achieve the effect of instant compensation, and can be used for the servo The feed system 23 selects the compensation value to be input to the error compensation table before interpolation, or directly compensates the calculated compensation value to the external origin drift.

Furthermore, each processing machine 21 further has a picking device 25 for connecting to the sensor 24 on the corresponding processing machine 21, and receiving the operational information measured by the sensor 24. And can be connected to the thermal deformation compensation application interface 11 in the computer system 10 through a communication method such as a network, a radio frequency (RF) or a Bluetooth (BT), and the corresponding thermal error mathematical model 31 is based on the received operation. The information is calculated from the compensation value of the processing machine 21, and then transmitted back to the controller 26 of each processing machine 21 through a communication method such as a network, a radio frequency (RF) or a Bluetooth (BT), so as to be possible for the spindle of the processing machine 21. 22 and the motor 231 of the servo feed system 23 perform a compensation operation.

Next, referring to FIG. 2, a method for compensating for thermal deformation of a plurality of processing machines simultaneously by the present invention, which comprises the above-mentioned architecture, mainly comprises the following steps:

(201) extracting, by each of the capturing devices 25, operation information measured by the sensor 24 on the processing machine 21;

(202) The thermal deformation compensation application interface 11 of the computer system 11 has an order, and the thermal deformation compensation application interface 11 is transmitted through the network, radio frequency (RF) or Bluetooth (BT) according to the sequence. The other communication method sequentially obtains the required operation information from each of the capturing devices 25;

(203) the thermal deformation compensation application interface 11 performs system monitoring and thermal deformation calculation using the obtained operation information, and calculates a compensation value of each processing machine 21 according to the corresponding thermal error mathematical model 31;

(204) The thermal deformation compensation application interface 11 returns the calculated compensation value to the controller 26 of each processing machine 21 through other communication methods such as network, radio frequency (RF) or Bluetooth (BT). To perform thermal deformation compensation work separately.

The thermal error mathematical model 31 corresponding to each processing machine 21 in the thermal deformation compensation application interface 11 can be operated by the spindle 24 or the servo feed system 23 of each machine tool 2122. The thermal error caused by monitoring and thermal deformation calculation replaces the conventional temperature compensation card, and the sensor 24 on each processing machine 21 includes other sensors such as a temperature sensor and a displacement sensor, so that the sensors are provided. 24 can automatically detect a variety of operational information according to the rotational speed of the processing machine 21 and the coordinate position, and the thermal deformation compensation application interface 11 can calculate the most accurate and immediate compensation value to ensure the machining accuracy of the machine tool 21.

As shown in FIG. 3, the heat distortion compensation application interface 11 can be connected to the capture device 25 of each processing machine 21 through other communication methods such as network, radio frequency (RF) or Bluetooth (BT). Lines, and calculation information transmitted by each of the processing devices 25, calculate the compensation value of each processing machine 21, and then return to each processing machine via network, radio frequency (RF) or Bluetooth (BT) and other communication methods. The compensation operation is performed within 21, and the compensation value can be selected according to different compensation modes to be input into the error compensation table before interpolation or compensated for external origin drift, so that a computer system can simultaneously monitor and simultaneously heat multiple processors 21 Deformation compensation operation.

The disclosure of the above-described embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention.

In summary, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objectives and is in accordance with the provisions of the Patent Law. Therefore, the inventor of the present invention filed an application according to law.

10. . . computer system

11. . . Thermal deformation compensation application interface

twenty one. . . Processing machine

twenty two. . . Spindle

twenty three. . . Servo feed system

231. . . motor

twenty four. . . Sensor

25. . . Pickup device

26. . . Controller

31. . . Thermal error mathematical model

Figure 1 is a schematic diagram of the architecture of the present invention

Fig. 2 is a flow chart of the present invention for simultaneously performing thermal deformation compensation for a plurality of processing machines

Figure 3 is a schematic diagram of the structure of the present invention when it is connected to a plurality of processing machines.

10. . . computer system

11. . . Thermal deformation compensation application interface

twenty one. . . Processing machine

twenty two. . . Spindle

twenty three. . . Servo feed system

231. . . motor

twenty four. . . Sensor

25. . . Pickup device

26. . . Controller

31. . . Thermal error mathematical model

Claims (7)

A method for simultaneously performing thermal deformation compensation on a plurality of processing machines, the method being applied to a computer system having a thermal deformation compensation application interface, wherein the plurality of thermal deformation compensation application interfaces are respectively configured to correspond to each other A thermal error mathematical model of a specific brand processing machine, and a plurality of sensors respectively arranged on each processing machine, the sensors on each processing machine can separately detect the operation information of the processing machine, and process each processing The operation information detected by the sensor on the machine is transmitted to the thermal deformation compensation application interface, and the compensation value of each processing machine is calculated by the corresponding thermal error mathematical model in the thermal deformation compensation application interface, and then returned. Transfer to each processing machine to perform compensation work separately. According to the method of claim 1 of the patent application, the method for compensating for thermal deformation of a plurality of processing machines at the same time, wherein the thermal deformation compensation application interface is established by at least a multi-variable linear regression or a multi-variable nonlinear regression method The thermal error model of each processing machine enables the thermal deformation compensation application interface to be in a single mode or multiple model compensation mode, and selects the compensation value to be input to the error compensation table before interpolation or to compensate for external origin drift. According to the method of claim 1, the method for simultaneously performing thermal deformation compensation on a plurality of processing machines, wherein the sensors on each processing machine comprise at least a temperature sensor and a displacement sensor. According to the method of claim 1, the method for simultaneously performing thermal deformation compensation on a plurality of processing machines, wherein the thermal deformation compensation application interface can communicate with one of the network, the radio frequency or the Bluetooth Each processing machine is connected so that the compensation value calculated by the thermal deformation compensation application interface can be transmitted back to each processing machine. According to the method of claim 1, the method for simultaneously performing thermal deformation compensation on a plurality of processing machines, wherein each processing machine further has a picking device, and each of the picking devices respectively has a feeling on the corresponding processing machine The detector is connected to receive the operational information measured by the sensor. According to the fifth aspect of the patent application scope, a method for simultaneously performing thermal deformation compensation on a plurality of processing machines, wherein the thermal deformation compensation application mask has a sequence, and the thermal deformation compensation application interface is in accordance with the sequence. The required computing information is obtained sequentially to each of the capturing devices. According to the sixth aspect of the patent application scope, the method for compensating for thermal deformation of a plurality of processing machines at the same time, wherein the processing device of each processing machine can communicate with one of the network, the radio frequency or the Bluetooth The computer system's thermal deformation compensation application interface is connected.