CN215616237U - Drive control circuit and device of press-fitting machine - Google Patents

Abstract

The utility model discloses a drive control circuit and a device of a press-mounting machine, wherein the drive control circuit of the press-mounting machine simultaneously integrates a drive module and a control module, the drive module is connected with the drive module through the control module, the drive module is used for being connected with an alternating current servo motor and a power supply, the control module is used for being connected with a pressure transmitter and a rotary encoder, on one hand, the volume is reduced, the external wiring is simplified, on the other hand, the control module can calculate required control parameters according to the pressure transmitter and the rotary encoder, and the drive module is controlled to drive and control the alternating current servo motor, so that the drive and control functions of the alternating current servo motor of the press-mounting machine are well realized.

Description

Drive control circuit and device of press-fitting machine

Technical Field

The utility model relates to the technical field of press mounting machine control, in particular to a drive control circuit and a drive control device of a press mounting machine.

Background

At present, a press-fitting machine is widely used in industrial production, the press-fitting machine is production equipment which needs to be installed in an interference fit manner in the process of assembling mechanical parts, such as gear connection of a transmission shaft and bearing embedding of a motor base, and the press-fitting machine is widely applied to the processing industries of automobile parts, motors and the like. In the press-fitting process of the press-fitting machine, a driving component is required to drive the press-fitting machine, a control component is required to control the state of the press-fitting machine, wherein the driving component is required to provide certain speed and torque and bear higher impact force, and the control component is required to have certain control flexibility so as to protect a machined workpiece and ensure that the workpiece is tightly combined. Nowadays, the driving part and the control part are arranged separately, so that the size is large and the wiring is complex.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problems, the present invention aims to: provided are a drive control circuit and a device for a press-fitting machine, which can reduce the size and simplify the wiring.

The technical scheme adopted by the utility model is as follows:

a drive control circuit of a press-fitting machine, comprising: the control module is connected with the driving module, the driving module is used for being connected with the alternating current servo motor and the power supply, and the control module is used for being connected with the pressure transmitter and the rotary encoder; the rotary encoder is installed in the alternating current servo motor, an output shaft of the alternating current servo motor is connected with a screw rod, the screw rod is connected with one end of the pressure transmitter, and the other end of the pressure transmitter is connected with the stamping structure.

Further, the driving module comprises an IGBT module, a driving circuit and a rectifying circuit, the driving circuit is connected with the control module and the IGBT module, the IGBT module is connected with the rectifying circuit and used for being connected with the alternating current servo motor, and the rectifying circuit is used for being connected with the power supply.

Further, the drive control circuit of pressure equipment machine still includes current transformer and a AD conversion module, current transformer's one end is connected the IGBT module be used for with the one end that alternating current servo motor connects, current transformer's the other end is connected a AD conversion module, a AD conversion module with control module connects.

Further, the control module includes a controller, and the controller is used for being connected with the driving circuit, the pressure transmitter, the rotary encoder and the first AD conversion module.

Furthermore, the drive control circuit of the press-fitting machine further comprises a display and a keyboard, and the display and the keyboard are both connected with the control module.

Further, the control module includes a controller for connecting with the drive module, the pressure transmitter and the rotary encoder.

Further, control module still includes second AD conversion module, the controller with pressure transmitter passes through second AD conversion module is connected.

Further, the control module also comprises a pulse interface, and the controller is connected with the rotary encoder through the pulse interface.

The present invention also provides a drive control circuit device of a press-fitting machine, including: the drive control circuit of pressure equipment machine, and include alternating current servo motor, pressure transmitter, rotary encoder the screw rod and stamping structure.

Further, the screw rod is provided with a sliding block, and the sliding block is connected with one end of the pressure transmitter.

The utility model has the beneficial effects that: drive control circuit of pressure equipment machine integration drive module and control module simultaneously, through control module with drive module connects, drive module is used for being connected with alternating current servo motor and power supply, control module is used for being connected with pressure transmitter and rotary encoder, has reduced the volume on the one hand, has simplified outside distribution, and on the other hand control module can calculate required control parameter according to pressure transmitter and rotary encoder, controls drive module drive and control alternating current servo motor, realizes drive and the control function to the alternating current servo motor of pressure equipment machine well.

Drawings

Fig. 1 is a block diagram of a driving control circuit device of a press-fitting machine according to the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," and the like in the description and claims of this application and in the drawings are used solely to distinguish one from another and are not used to describe a particular sequence. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The utility model will be further explained and explained with reference to the drawings and the embodiments in the description.

Referring to fig. 1, an embodiment of the present invention provides a drive control circuit of a press-fitting machine, including a drive module, a control module, a current transmitter, a first AD conversion module, a display, and a keyboard. The control module is connected with the driving module, the driving module is used for being connected with the alternating current servo motor and the power supply, and the control module is used for being connected with the pressure transmitter and the rotary encoder; the rotary encoder is installed in an alternating current servo motor, an output shaft of the alternating current servo motor is connected with a screw rod, the screw rod is connected with one end of a pressure transmitter, and the other end of the pressure transmitter is connected with a stamping structure. Optionally, the ac servo motor, the pressure transducer, the rotary encoder, the screw, and the stamping structure are part of a press.

Referring to fig. 1, optionally, the driving module includes an IGBT module, a driving circuit, and a rectifying circuit; the control module comprises a controller, a pulse interface and a second AD conversion module.

In the embodiment of the application, the controller is used for being connected with the driving circuit, the pressure transmitter, the rotary encoder and the first AD conversion module. Optionally, the controller includes, but is not limited to, an STM32F429 chip, which has a built-in DSP, an AD converter, an SPI interface, a TFT liquid crystal panel interface, a PWM control logic circuit, and the like.

Referring to fig. 1, in the embodiment of the present application, a driving circuit is connected to a controller and an IGBT module, the IGBT module is connected to a rectifying circuit and is used for being connected to an ac servo motor, and the rectifying circuit is used for being connected to a power supply. The power source is an alternating current. Optionally, the IGBT module is composed of 6 IGBT tubes, and can drive an ac servo motor.

Referring to fig. 1, in the embodiment of the present application, one end of a current transmitter is connected to one end of an IGBT module for connecting with an ac servo motor, the other end of the current transmitter is connected to a first AD conversion module, and the first AD conversion module is connected to a controller. The current transmitter can monitor the current change of a main loop where the IGBT module is located, and is used for timely limiting faults such as overload in operation.

Referring to fig. 1, in the embodiment of the present application, both the display and the keyboard are connected to the control module. Optionally, the display is connected with the controller through a liquid crystal screen interface of the controller, and the display is a dot matrix liquid crystal screen with the size of 800 × 480 and can be used for displaying the states of the current stamping structure position, pressure and limiting signals and state signals of the operation, alarm and the like of the alternating current servo motor; the keyboard can be used for setting a pressure curve interval, selecting a control strategy and setting parameters such as control gain, integral time, differential time and the like of the alternating current servo motor.

In the embodiment of the application, the rotary encoder is an absolute rotary encoder and is used for determining the position of the stamping structure, so that a position sensor is omitted, and the press-mounting machine does not need to be started and is subjected to zero-seeking operation. Optionally, the rotary encoder adopts BISS standard protocol, and is connected with the pulse interface through RS422 differential signal lines.

Referring to fig. 1, in the embodiment of the present application, a controller and a pressure transmitter are connected through a second AD conversion module. It should be noted that, the pressure transmitter can detect the pressure of the stamping structure, and realize the full closed-loop control of the pressure loop. Optionally, the second AD conversion module includes a precision resistor and an AD converter, and the precision resistor is used to convert the current signal into a voltage signal, and the voltage signal is converted into a digital value by the AD converter and input to the controller.

Referring to fig. 1, in the embodiment of the present application, the control module further includes a pulse interface, and the controller is connected to the rotary encoder through the pulse interface. Optionally, the pulse interface adopts a high-speed photoelectric coupler, and the pulse signal can be conditioned and isolated and then sent to the controller.

The working principle of the drive control circuit of the press-fitting machine according to the embodiment of the present invention is described below: an alternating current power supply is changed into direct current by a rectification circuit and then is sent to an IGBT module, a controller calculates required control parameters (such as frequency and amplitude information) according to process parameters (such as set speed, target position and current value of a rotary encoder) input by a keyboard, sends PWM pulses to a driving circuit to control the IGBT module, and changes the direct current from the rectification circuit into vector control voltage/current of an alternating current servo motor from the IGBT module to drive the alternating current servo motor to rotate; in the working process of the alternating current servo motor, the controller adjusts the width of the level applied to the IGBT module in real time according to the position information fed back by the rotary encoder and the pressure value fed back by the pressure transmitter, so that the detection function is realized, when the pressure increase speed of the stamping structure is too high, the output current can be timely reduced and converted into a torque control mode, and slipping and pause are prevented; when the stamping structure reaches the target position, pressure maintaining operation is carried out, stress is eliminated, and the workpiece is fully embedded.

The utility model takes a high-performance controller as a core, and controls the driving circuit of the power by shortening a closed-loop control chain and a variable model control strategy, so that the response speed is high and the impact resistance is good; the functions of the control module and the driving module are integrated together, so that the size is reduced, external wiring is simplified, redundant parts such as a processor and a power supply can be reduced, and the cost is saved.

The application still provides a drive control circuit device of pressure equipment machine, including the drive control circuit of above-mentioned pressure equipment machine to and including AC servo motor, pressure transmitter, rotary encoder, screw rod and stamping structure.

Optionally, the rotary encoder and the pressure transmitter are both connected with the controller, the rotary encoder is mounted at the tail of the alternating current servo motor and is coaxially connected with the alternating current servo motor, an output shaft of the alternating current servo motor is connected with a screw rod, a sliding block is arranged on the screw rod and is connected with one end of the pressure transmitter, and the other end of the pressure transmitter is connected with the stamping structure.

Optionally, the stamping structure includes, but is not limited to, a ram.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims (10)

1. A drive control circuit of a press-fitting machine, characterized by comprising: the control module is connected with the driving module, the driving module is used for being connected with the alternating current servo motor and the power supply, and the control module is used for being connected with the pressure transmitter and the rotary encoder; the rotary encoder is installed in the alternating current servo motor, an output shaft of the alternating current servo motor is connected with a screw rod, the screw rod is connected with one end of the pressure transmitter, and the other end of the pressure transmitter is connected with the stamping structure.

2. The drive control circuit of a press-fitting machine according to claim 1, characterized in that: the driving module comprises an IGBT module, a driving circuit and a rectifying circuit, the driving circuit is connected with the control module and the IGBT module, the IGBT module is connected with the rectifying circuit and used for being connected with the alternating current servo motor, and the rectifying circuit is used for being connected with the power supply.

3. The drive control circuit of the press-fitting machine according to claim 2, characterized in that: the drive control circuit of pressure equipment machine still includes current transformer and a AD conversion module, current transformer's one end is connected the IGBT module be used for with the one end that alternating current servo motor connects, current transformer's the other end is connected a AD conversion module, a AD conversion module with control module connects.

4. The drive control circuit of a press-fitting machine according to claim 3, characterized in that: the control module comprises a controller, and the controller is used for being connected with the driving circuit, the pressure transmitter, the rotary encoder and the first AD conversion module.

5. The drive control circuit of a press-fitting machine according to claim 1, characterized in that: the drive control circuit of the press-mounting machine further comprises a display and a keyboard, and the display and the keyboard are both connected with the control module.

6. The drive control circuit of a press-fitting machine according to claim 1, characterized in that: the control module comprises a controller, and the controller is used for being connected with the driving module, the pressure transmitter and the rotary encoder.

7. The drive control circuit of the press-fitting machine according to claim 6, characterized in that: the control module further comprises a second AD conversion module, and the controller is connected with the pressure transmitter through the second AD conversion module.

8. The drive control circuit of the press-fitting machine according to claim 6, characterized in that: the control module further comprises a pulse interface, and the controller is connected with the rotary encoder through the pulse interface.

9. A drive control circuit device of a press-fitting machine, characterized by comprising: the drive control circuit of the press-fitting machine according to any one of claims 1 to 8, and comprising the ac servomotor, the pressure transmitter, the rotary encoder, the screw, and the press structure.

10. The drive control circuit device of the press-fitting machine according to claim 9, characterized in that: the screw rod is provided with a sliding block, and the sliding block is connected with one end of the pressure transmitter.

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