CN2893762Y

CN2893762Y - Plate shearing machine multiaxle synchronous control system based on CAN bus technology

Info

Publication number: CN2893762Y
Application number: CNU2006200952439U
Authority: CN
Inventors: 周红祥; 曾刚
Original assignee: HUBEI SANHUAN METALFORMING MACHINE TOOL CO Ltd
Current assignee: Hubei Sanhuan Forging and Pressing Equipment Co., Ltd.
Priority date: 2006-01-27
Filing date: 2006-01-27
Publication date: 2007-04-25
Anticipated expiration: 2016-01-27

Abstract

The utility model relates a multi-axis synchronization shearing machine control system based on CAN bus technics, which comprises a upper IPC, a scene PLC, a CAN bus communication board, a servo system and a remote control module, especially, the upper IPC is used to form the system operating station to complete man-machine operation interface, data graphics, alarm information, and other functions; The scene PLC constitutes the underlying system control station, which completes the data acquiring and controlling process; The servo system is used as the executing agency, to complete the precise control on the data-controlled axis. Among these, the upper PC uses RS485 interface to be connected with the PLC which is connected with the servo systems and remote control module by CAN bus; the virtual spindle method is used to synchronize with the rotating axis. The utility model solves the problems of the universal CNC system having less control axis, the flexibility is not strong and the high cost, which is especially fit for the high automatic CNC cutting machine.

Description

Plate shearing machine multiaxis synchronous control system based on the CAN bussing technique

(1) technical field: the utility model relates to the control system in the metal forming machinery, is a kind of plate shearing machine multiaxis synchronous control system based on the CAN bussing technique.

(2) background technology: at present, plate shearing machine on the domestic and international market adopts the tailored version digital control system mostly, as DELEM250,350, CYBELEC10 etc., these digital control systems all can only be controlled universal plate shearing machine, number of axes is less, can only realize that usually diaxon is synchronous, and application flexibility is not strong, be unfavorable for secondary development, and price is higher.

(3) summary of the invention: the purpose of this utility model will solve exactly that existing digital control system number of axes is less, and dirigibility is not strong, and the problem that cost is high provides a kind of plate shearing machine multiaxis synchronous control system based on the CAN bussing technique.

The purpose of this utility model is achieved in that the plate shearing machine multiaxis synchronous control system based on the CAN bussing technique, mainly dispose upper IPC, on-the-spot PLC (comprising CPU, AIOs, DIOs), CAN bus communication card, servo-drive system, remote control module, particularly: the active station of host computer IPC construction system, finish functions such as man-machine interface operation, datagraphic demonstration, warning message; The data acquisition and the process control of production run are finished in the bottom control station of on-the-spot PLC construction system; Servo-drive system is finished the accurate control of each numerical control axle as topworks; Wherein, host computer adopts the RS485 interface to be connected with PLC, and PLC adopts the CAN bus to be connected with servo-drive system and remote control module, and each rotates and adopts virtual main shaft mode synchronous.

CAN (Controller Area Network) bus, it is the serial communication LAN of distributed control of a kind of effective support or real-time control, because its high-performance, high reliability, real-time is good and unique design, be widely used in that in the control system each detects and topworks between data communication, risen at industrial control field and used upsurge.This control system is organically in conjunction with the up-to-date knowwhy of field bus technique, PLC, DCS, servomotor and Computer Control Technology, adopt hardware replace by software thought, with the industrial control computer is the control core, with the Fieldbus Control network is tie, adopt the general purpose control module to form on-the-spot formula control system, realize control, monitoring, management integration.This system is except satisfying the knife rest motion of plate shearing machine routine, the angle of shear, gap blade, cutting stroke, AIOs such as retainer, beyond the DIOs control, can also realize high-precision multiaxis Synchronous motion control function, number of axes is up to 64 at most, each all can carry out single step or synchro control, the control rate of each, orientation distance, parameters such as moment of torsion can be adjusted according to actual conditions, the operation work step can be changed arbitrarily, can finish the plate location of various complexity, shear, controls such as discharging are specially adapted to the higher large-scale production line of automaticity.

It is more accurate to adopt virtual main shaft control mode to carry out motion control with respect to traditional real main shaft control mode in the utility model.Virtual main shaft generates given by theoretical ideal form, without any deviation.With respect to real main shaft control mode, virtual main shaft mode do not have at any time we do not expect the fluctuation of rotational speed.Under virtual main shaft control mode, all are synchronous to carry out identical sweep time by the clock signal of main shaft from axle, and this same not mode can be avoided owing to each obtains the given error that produces constantly in difference.

Characteristics of the present utility model are: 1. systemic openness is good, extendability is strong, applying flexible, as long as follow the CAN bus standard, just have interoperability, interchangeability, thereby improved the integration capability of equipment greatly, and PLC and host computer applying flexible, the property height can be programmed according to the various different demands of lathe.2. maintainable good, can obtain a large amount of abundant field equipment data by the CAN bus, on-line fault diagnosis, warning, writing function with field level equipment, can finish the parametrization work such as remote parameter setting, modification of field apparatus, and, strengthened the maintainability of system by reserving PROFIBUS maintenance interface.Simultaneously, bus end minor control module all is a plug-in type, but plug and play has made things convenient for the installation and the replacing of equipment widely.3.I/O distributivity is better, owing to adopt distributed bus control, bus controller, control module and I/O terminal module can be placed near the field apparatus easily, thereby realize controlling on the spot and communicating by letter, thereby the erected cost of having saved a large amount of I/O cables and having caused thus, reduced construction costs, had good economical.

(4) description of drawings:

Fig. 1 is an electric connection synoptic diagram of the present utility model;

Fig. 2 is the control module synoptic diagram of system.

(5) embodiment:

Produce with our company one cutting the folding production line is example, this production line automation degree height, control is complicated, and require multiaxis synchronous, except finishing general cutting the folding function, also need parameter, select corresponding numerical control axle to carry out the location of different modes, the whole production line fully automatic operation automatically according to plate.Versatility digital control system on the market all can not satisfy above requirement now, control system of the present utility model is successful Application on this production line, dispose 1 IPC in the system, 2 b maXX controller PLC Programmable Logic Controllers, 2 remote controllers, 13 servo controllers and motor, connected mode is referring to Fig. 1.Be that upper IPC adopts the RS485 interface to be connected with on-the-spot PLC, PLC adopts the CAN bus to be connected with servo-drive system and remote control module.Each function control requires man-machine interface and PLC are programmed according to lathe, PLC is by the CAN bus, with virtual main shaft mode each numerical control axle is carried out synchro control, editor module is referring to Fig. 2, and each numerical control axle is control separately, and host computer is realized man-machine interaction by man-machine interface, the operation of control this locality and digital remote amount and analog quantity, numerical control axle etc., working procedure and parameter to production line are set, and can also show running status in real time simultaneously, send warning message etc.

Claims

1. based on the plate shearing machine multiaxis synchronous control system of CAN bussing technique, mainly dispose upper IPC, on-the-spot PLC, CAN bus communication card, servo-drive system, remote control module, it is characterized in that: the active station of host computer IPC construction system, finish functions such as man-machine interface operation, datagraphic demonstration, warning message; The data acquisition and the process control of production run are finished in the bottom control station of on-the-spot PLC construction system; Servo-drive system is finished the accurate control of each numerical control axle as topworks; Wherein, host computer adopts the RS485 interface to be connected with PLC, and PLC adopts the CAN bus to be connected with servo-drive system and remote control module, and each rotates and adopts virtual main shaft mode synchronous.