CN201998030U - Motor synchronous control device for polishing machine crossbeam swing - Google Patents

Abstract

The utility model discloses a motor synchronous control device for polishing machine crossbeam swing. The utility model comprises a master servo motor, a master servo motor controller, a slave servo motor, a slave servo motor controller and a programmable controller, and is characterized in that the master servo motor is provided with a master encoder and the slave servo motor is provided with a slave encoder; the master servo motor is driven and controlled by the master servo motor controller based on a feedback signal from the master encoder and the slave servo motor is driven and controlled by the slave servo motor based on a feedback signal from the slave encoder; and comparison and correction of the speed of the slave servo motor are continuously carried out by the slave servo motor controller according to a speed signal transmitted from the master servo motor to the programmable controller as well as the feedback signal from the slave encoder, such that the slave servo motor is in a synchronous motion with the master servo motor. The utility model enables automatic correction of the speed of the servo motors based on the feedback signals from the encoders to keep the two servo motors in a synchronous motion, thereby avoiding a long shaft for motor connection in a conventional mechanical synchronous mode, lowering cost and reducing failure rate of crossbeam swing.

Description

A kind of polishing machine crossbeam swing motor synchronous control device

Technical field

The utility model relates to a kind of motor synchronous control device, is specifically related to a kind of polishing machine crossbeam swing motor synchronous control device.

Background technology

Construction material (profile is flat brick shape) polishing machines such as ceramic material, glass material, marble material, artificial stone material should be extensive the construction material processing industry, with the ceramic polishing machine is example, because the effect of polishing machine mainly is to make the crossbeam swing drive bistrique when product surface is rotated polishing, its abrading block that installs is above swung voluntarily product surface is ground, abrading block is line with product surface and contacts, thereby improves the glossiness of product surface effectively.Because the volume mass of crossbeam is bigger, length is longer, if drive crossbeam with a stepper motor, crossbeam is stressed unbalanced situation can to occur, so finish by two crossbeam swing stepper motors for the driving of crossbeam at present, in order to guarantee to swing the synchronous of stepper motor motion, two crossbeams swing stepper motors connect with a major axis.But the reason that has mechanical clearance owing to crossbeam swing stepper motor and reductor, so the motion of two crossbeams swing stepper motor itself is impossible fully synchronous, therefore be used for connecting and keep synchronous major axis will be subjected to pullling of stress, also affact conversely simultaneously on the crossbeam swing stepper motor, for a long time after the operation, the life-span of crossbeam swing stepper motor and reductor will be affected greatly, in the time of serious even can cause the major axis fracture.These problems are insurmountable always on polishing machine at present.

The utility model content

The purpose of this utility model is at the problems referred to above weak point, provides a kind of automatic adjusting two motor movement speed to make its polishing machine crossbeam that is synchronized with the movement swing motor synchronous control device.

In order to achieve the above object, the utility model is by the following technical solutions:

A kind of polishing machine crossbeam swing motor synchronous control device, comprise main servo motor, main servo electric machine controller, from servomotor, from servomotor controller and Programmable Logic Controller, described main servo motor is provided with main encoder, describedly is provided with from encoder from servomotor;

Described Programmable Logic Controller and main servo electric machine controller reach and electrically connect from servomotor controller;

Described main servo electric machine controller and main servo motor and main encoder electrically connect;

Described reaching from servomotor controller and from servomotor electrically connects from encoder;

Described main servo electric machine controller drives control main servo motor according to the feedback signal of main encoder, drive control from servomotor from servomotor controller according to feedback signal from encoder, pass to the rate signal of Programmable Logic Controller and constantly relatively and revise speed from servomotor controller according to the main servo electric machine controller, make from servomotor and main servo motor synchronous and move from servomotor from the feedback signal of encoder.

The utility model is simple in structure, adopt servomotor to replace existing stepper motor, increase servomotor controller and Programmable Logic Controller, can revise servomotor speed automatically according to the feedback signal of encoder, two servomotors are synchronized with the movement, save the required motor of the existing machinery method of synchronization and connected major axis, reduced cost, reduced the fault rate of crossbeam swing.

Description of drawings

Fig. 1 is installed in vertical view on the polishing machine crossbeam for the utility model.

Fig. 2 is the utility model electric control theory sketch.

Below come the utility model is further described by the drawings and specific embodiments:

The specific embodiment

As illustrated in fig. 1 and 2, polishing machine crossbeam swing motor synchronous control device described in the utility model is applied on the crossbeam of polishing machine, it comprises main servo motor 3, main servo electric machine controller 2, from servomotor 6, from servomotor controller 5 and Programmable Logic Controller 1, described main servo motor 3 is provided with main encoder 4, describedly be provided with from encoder 7 from servomotor 6, described main servo motor 3 is installed in a side of polishing machine crossbeam, the described opposite side that is installed in the polishing machine crossbeam from servomotor 6.

Described Programmable Logic Controller 1 electrically connects with main servo electric machine controller 2 and from servomotor controller 5, and Programmable Logic Controller 1 and main servo electric machine controller 2 reach from forming a closed-loop control system between the servomotor controller 5.

Described main servo electric machine controller 2 electrically connects with main servo motor 3 and main encoder 4, and main servo electric machine controller 2, main servo motor 3 and main encoder 4 have just been formed a closed-loop control system;

Described reaching from encoder 7 from servomotor controller 5 and from servomotor 6 electrically connects, and reaches from servomotor controller 5, from servomotor 6 and also formed a closed-loop control system from encoder 7;

Described main servo electric machine controller 2 drives control main servo motor 3 according to the feedback signal of main encoder 4, drive control from servomotor 6 from servomotor controller 5 according to feedback signal from encoder 7, pass to the rate signal of Programmable Logic Controller 1 and constantly relatively and revise speed from servomotor controller 5 according to main servo electric machine controller 2, make from servomotor 6 and main servo motor 3 to be synchronized with the movement from servomotor 6 from the feedback signal of encoder 7.

Below come the utility model is further described by concrete application principle:

The utility model will have the servomotor that crossbeam swing stepper motor changes corresponding moment of torsion into now, specifically be divided into the main servo motor and from servomotor, main servo motor and supporting main servo electric machine controller composition one cover main servo system, and the main servo motor carry main encoder as the displacement detecting element both as judge movement position according to also being the basis of feedback modifiers movement velocity simultaneously, from servomotor and supporting overlapping from servo-drive system from servomotor controller composition one, also had been the basis of feedback modifiers movement velocity simultaneously as the foundation of judging movement position and carry from encoder from servomotor both as the displacement detecting element, principal and subordinate's servomotor controller is when driving separately servomotor, also make between the two cover servo-drive systems and form principal and subordinate's control model by Programmable Logic Controller, as the servo-drive system of slave station with the main website servo-drive system as speed reference, be not only every servomotor like this and self formed accurate speed ring closed-loop control, and between two servomotors of principal and subordinate, all formed accurate speed ring closed-loop control, because the speed difference that principal and subordinate two cover servo-drive systems may exist between constantly revising in more each other speed and with this each other, adding signal is to transmit between servomotor controller and servomotor with the speed of Millisecond, therefore can reach optimal synchronous effect.

The utility model is simple in structure, adopt servomotor to replace existing stepper motor, increase servomotor controller and Programmable Logic Controller, can revise servomotor speed automatically according to the feedback signal of encoder, two servomotors are synchronized with the movement, save the required motor of the existing machinery method of synchronization and connected major axis, reduced cost, reduced the fault rate of crossbeam swing.

Claims (1)

1. a polishing machine crossbeam is swung the motor synchronous control device, it is characterized in that: comprise main servo motor, main servo electric machine controller, from servomotor, from servomotor controller and Programmable Logic Controller, described main servo motor is provided with main encoder, describedly is provided with from encoder from servomotor;

Described Programmable Logic Controller and main servo electric machine controller reach and electrically connect from servomotor controller;

Described main servo electric machine controller and main servo motor and main encoder electrically connect;

Described reaching from servomotor controller and from servomotor electrically connects from encoder;

Described main servo electric machine controller drives control main servo motor according to the feedback signal of main encoder, drive control from servomotor from servomotor controller according to feedback signal from encoder, pass to the rate signal of Programmable Logic Controller and constantly relatively and revise speed from servomotor controller according to the main servo electric machine controller, make from servomotor and main servo motor synchronous and move from servomotor from the feedback signal of encoder.

Images