CN102632308A - Control method of electric discharge machining (EDM) machine - Google Patents

Abstract

The invention relates to the field of electric discharge machining (EDM) machines and in particular relates to a control method of an EDM machine. The control method mainly comprises the steps of initialization, wait trigger power fail safeguard interruption, interpolation period timer interruption, timer scanning interruption and receiving interruption. According to the invention, all the executive systems can be controlled by requiring only one control method, complexity of a program is reduced, and working efficiency of the EDM machine is improved.

Description

The control method of electric spark shaping mill

Technical field

The present invention relates to the electric spark shaping mill field, relate in particular to a kind of control method of electric spark shaping mill.

Background technology

The numerical control electric spark make-up machine need use master control system and a plurality of executive system, need carry out exchanges data between system and the system, and data volume is very big; And the electric spark shaping mill of prior art mainly adopts the traditional data switching control method; Promptly carry out point-to-point communication mode, promptly each executive system all needs control separately, so each executive system all needs a control module and control method; Control is got up more loaded down with trivial details like this; And each executive system also need be sent to primary module with data through communications conduit separately, because communications conduit is various, primary module can only carry out with polling mode like this; So it is relatively poor that primary module receives the real-time and the reliability of deal with data, and efficient is also low.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of primary module that lets receive deal with data real-time, good reliability; And the control method of the electric spark shaping mill that efficient is high; And only need this control method just can control all executive systems; Reduce the complexity of program, improved the operating efficiency of electric spark shaping mill.

The technical scheme that the present invention adopted is: a kind of control method of electric spark shaping mill, and this control method may further comprise the steps:

1), initialization memory variable, CAN bus port, three driver modules, timing scan device and interpolation cycle timers, open reception and transmission that power down protection interrupts and start the CAN bus;

2), wait for that the triggering power down protection interrupts, interpolation cycle regularly interrupts, timing scan is interrupted and reception is interrupted;

3), if electric spark shaping mill generation power-down conditions, electric spark shaping mill main control module receives power-off signal, then the power down protection down trigger gets into step (4); If fixed time cycle of interpolation cycle timer then, then interpolation cycle down trigger regularly gets into step (5); If fixed time cycle of timing scan device then, then the timing scan down trigger then gets into step (6); If when electric spark shaping mill main control module receives from the data that CAN bus or numerical control cartridge module pass over, receive down trigger, get into step (7); If wherein two kinds or three kinds or four kinds when occurring at one time of four kinds of interruptions, then priority orders is that power down protection interrupts, interpolation cycle regularly interrupts, receives interruption, the timing scan interruption; If four kinds of interruptions are then returned step (2) and are continued to wait for all less than triggering;

4), the power down protection down trigger, close every other task, check then whether the data in the internal memory identical with data in the memory, if identical then shutdown; If different, shutdown after then the data in the internal memory being preserved;

5), interpolation cycle timing down trigger; Primary module detects current each the running status of electric spark shaping mill; Carry out the track interpolation and send data to three driver modules, three driver modules continue to drive the operation of three of electric spark shaping mills according to the data that receive, and primary module also sends data to display module; Display module receives data and each interpolation component is presented on the display terminal then, returns step (2) then and continues to wait for;

6), timing scan down trigger; Key-press module scanning button also extracts key assignments, and whether the key-press module inspection has data need send to primary module, has to send to primary module after then making frame; If detect when data need not send to primary module, then return step (2) and continue to wait for;

7), receive down trigger, receive the data that send over from CAN bus or numerical control cartridge module, data based different priority is saved in respectively in the buffering area of corresponding different priorities, get into next step then;

8), extract in the buffering area of different priorities successively according to data priority and to carry out corresponding processing again after data are resolved, in buffering area, do not have data, return step (2) afterwards and continue to wait for.

The control method of a kind of electric spark shaping mill of the present invention compared with prior art; Have the following advantages: because adopted a control module and control method to control the operation of whole electric spark shaping mill all executive systems; Reduced the complexity of program; Improved the operating efficiency of electric spark shaping mill; And all now executive systems all come and primary module UNICOM through the CAN bus, again because the data communication of CAN bus has outstanding reliability, real-time and flexibility, so primary module receives and deal with data also has reliability, real-time and flexibility.

Description of drawings

Fig. 1 is the flow chart of the control method of electric spark shaping mill of the present invention.

Fig. 2 is the connection block diagram of the electric spark shaping mill in the control method of electric spark shaping mill of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment the present invention is done to further describe, but the present invention is not limited only to the following specific embodiment.

As shown in Figure 1, a kind of control method of electric spark shaping mill, this control method may further comprise the steps:

1), initialization memory variable, CAN bus port, three driver modules, timing scan device and interpolation cycle timers, open reception and transmission that power down protection interrupts and start the CAN bus;

2), wait for that the triggering power down protection interrupts, interpolation cycle regularly interrupts, timing scan is interrupted and reception is interrupted;

3), if electric spark shaping mill generation power-down conditions, electric spark shaping mill main control module receives power-off signal, then the power down protection down trigger gets into step (4); If fixed time cycle of interpolation cycle timer then, then interpolation cycle down trigger regularly gets into step (5); If fixed time cycle of timing scan device then, then the timing scan down trigger then gets into step (6); If when electric spark shaping mill main control module receives from the data that CAN bus or numerical control cartridge module pass over, receive down trigger, get into step (7); If wherein two kinds or three kinds or four kinds when occurring at one time of four kinds of interruptions, then priority orders is that power down protection interrupts, interpolation cycle regularly interrupts, receives interruption, the timing scan interruption; If four kinds of interruptions are then returned step (2) and are continued to wait for all less than triggering;

4), the power down protection down trigger, close every other task, check then whether the data in the internal memory identical with data in the memory, if identical then shutdown; If different, shutdown after then the data in the internal memory being preserved;

5), interpolation cycle timing down trigger; Primary module detects current each the running status of electric spark shaping mill; Carry out the track interpolation and send data to three driver modules, three driver modules continue to drive the operation of three of electric spark shaping mills according to the data that receive, and primary module also sends data to display module; Display module receives data and each interpolation component is presented on the display terminal then, returns step (2) then and continues to wait for;

6), timing scan down trigger; Key-press module scanning button also extracts key assignments, and whether the key-press module inspection has data need send to primary module, has to send to primary module after then making frame; If detect when data need not send to primary module, then return step (2) and continue to wait for;

7), receive down trigger, receive the data that send over from CAN bus or numerical control cartridge module, data based different priority is saved in respectively in the buffering area of corresponding different priorities, get into next step then;

8), extract in the buffering area of different priorities successively according to data priority and to carry out corresponding processing again after data are resolved, in buffering area, do not have data, return step (2) afterwards and continue to wait for.

As shown in Figure 2, said primary module be connected with display module, memory and CAN bus respectively, said display terminal links to each other with display module, said three driver modules all link to each other with primary module with key-press module.

Described initialization timing scanner of step (1) and interpolation cycle timer are meant this cycle of two are made as 2ms and 4ms respectively.

The described power-down conditions of step (3) is meant that electric spark shaping mill can not be grown up work because of outage, dead electricity or can't meet the quality requirement of electricity.

Internal memory described in the step (4) is provided in a side of in the primary module, and holder is provided in a side of outside the primary module.

The described interpolation cycle of step (5) also is equivalent to a timing cycle, when this cycle then, interpolation cycle regularly interrupts being triggered; Primary module can detect current each the running status of electric spark shaping mill; And this cycle be very short, detecting each running status of electric spark shaping mill in real time so be equivalent to primary module, and sending data to display module; Display module receives data and is presented on the display terminal; Again because running orbit has error, so the intermediate point that need calculate the position of each current position and needs arrival according to the parameter and the specific computing method of setting is again confirmed the running orbit of each, i.e. track interpolation; Control three driver modules then, let three continuation along the track operation that calculates.

The timing scan device cycle is very short in the step (6); Be generally 2ms, thus be equivalent to key-press module at real time scan and extract key assignments, when the people has actuation of keys; Key-press module can scan and extract key assignments; Key-press module can detect data and need send to primary module then, with sending to primary module after the data system frame, here sends and sends through the CAN bus then.

Data have priority in the step (7), such as the power-off signal data priority that the CAN bus sends over is the highest, and the parameter information priority that the CAN bus sends over is just lower.

The specific embodiment of the control method of electric spark shaping mill of the present invention: after the key zone button of people on the electric spark shaping mill electrical control cubicles; The timing scan device cycle after this, then timing scan interrupted being triggered, and key-press module can scan button; Extract key assignments then; Key-press module sends to primary module with after these key assignments data system frames through the CAN bus then, so this moment, the CAN bus had data passes to arrive primary module, receiving interruption can be triggered; Primary module can receive the data that send over from the CAN bus then; Can these data according to priority be kept at respectively in the buffering area of corresponding different priority afterwards, because key-press module sends generally is the variation of parameter, so priority ratio is lower; So be kept in the buffering area of low priority; Then primary module extracts data again in go and resolves and carry out corresponding processing, just need data be sent to three driver modules through the CAN bus afterwards such as the parameter change here, lets the three-axis moving track on the electric spark shaping mill make corresponding variation.

Claims (1)

1. the control method of an electric spark shaping mill, it is characterized in that: this control method may further comprise the steps:

1), initialization memory variable, CAN bus port, three driver modules, timing scan device and interpolation cycle timers, open reception and transmission that power down protection interrupts and start the CAN bus;

2), wait for that the triggering power down protection interrupts, interpolation cycle regularly interrupts, timing scan is interrupted and reception is interrupted;

3), if electric spark shaping mill generation power-down conditions, electric spark shaping mill main control module receives power-off signal, then the power down protection down trigger gets into step (4); If fixed time cycle of interpolation cycle timer then, then interpolation cycle down trigger regularly gets into step (5); If fixed time cycle of timing scan device then, then the timing scan down trigger then gets into step (6); If when electric spark shaping mill main control module receives from the data that CAN bus or numerical control cartridge module pass over, receive down trigger, get into step (7); If wherein two kinds or three kinds or four kinds when occurring at one time of four kinds of interruptions, then priority orders is that power down protection interrupts, interpolation cycle regularly interrupts, receives interruption, the timing scan interruption; If four kinds of interruptions are then returned step (2) and are continued to wait for all less than triggering;

4), the power down protection down trigger, close every other task, check then whether the data in the internal memory identical with data in the memory, if identical then shutdown; If different, shutdown after then the data in the internal memory being preserved;

5), interpolation cycle timing down trigger; Primary module detects current each the running status of electric spark shaping mill; Carry out the track interpolation and send data to three driver modules, three driver modules continue to drive the operation of three of electric spark shaping mills according to the data that receive, and primary module also sends data to display module; Display module receives data and each interpolation component is presented on the display terminal then, returns step (2) then and continues to wait for;

6), timing scan down trigger; Key-press module scanning button also extracts key assignments, and whether the key-press module inspection has data need send to primary module, has to send to primary module after then making frame; If detect when data need not send to primary module, then return step (2) and continue to wait for;

7), receive down trigger, receive the data that send over from CAN bus or numerical control cartridge module, data based different priority is saved in respectively in the buffering area of corresponding different priorities, get into next step then;

8), extract in the buffering area of different priorities successively according to data priority and to carry out corresponding processing again after data are resolved, in buffering area, do not have data, return step (2) afterwards and continue to wait for.

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