CN101480786B - Grinding machine initial point positioning-protecting device and method - Google Patents
Grinding machine initial point positioning-protecting device and method Download PDFInfo
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- CN101480786B CN101480786B CN 200810233349 CN200810233349A CN101480786B CN 101480786 B CN101480786 B CN 101480786B CN 200810233349 CN200810233349 CN 200810233349 CN 200810233349 A CN200810233349 A CN 200810233349A CN 101480786 B CN101480786 B CN 101480786B
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Abstract
The present invention discloses an original point positioning protecting device of a numerical control machine and a protecting method for original point. The protecting device comprises a data collection module, an operation module and a warning module, wherein the data collection module is used for collecting speed reduction starting signals, original point search starting signals and per-rotation pulse signals of a servo motor; the operation module is used for confirming the speed reduction time t1, the original point search starting time t2 and the rotation stopping time t3 of the servo motor according to data input by the data collection module, confirming the travel route of a moving part between the original point search starting time t2 and the rotation stopping time t3 of the servo motor and comparing the travel route of a moving part with the transmission tread pitch of the 1/N servo motor, and the N is any positive number less than the transmission tread pitch (mm) of the servo motor; and the warning module is used for receiving commands of the operation module and sending warning signals. When the speed reduction starting signals and original point search enabling signals are out of a reasonable area, a computer can automatically prompt the startup position of an inching switch for operators, thereby the invention can ensure that signals can stop at the real original point when returning to the original point every time, and can also ensure that incidents such as the damage of cutters, scrapped workpieces, industrial injuries, and the like can not occur.
Description
Technical field
The present invention relates to a kind of grinding machine initial point positioner and method, grinding machine initial point positioning protection device and guard method.
Background technology
Initial point is the starting point of Metal Cutting Machine Tool workpiece and tool feeding, and the accuracy of initial point is undoubtedly precision machined prerequisite, also is the prerequisite of machine safety operation.Grinding machine is a kind of common process equipment, not only can carry out grinding to the surface of workpiece, can also carry out groove, Machining of Curved Surface to workpiece.Grinding machine is when work, because processing needs, its workpiece slide unit and emery wheel workbench need be got back to working origin.
The grid location is the original point position scheme of Digit Control Machine Tool widespread usage.Its original point position degree of accuracy is higher, but has hidden danger aspect security.As shown in Figure 2, when returning initial point, moving component (slide unit or workbench) retreats fast with high speed (Vh), works as t=t
1The time, slowing down and the negative saltus step of initial point search enabling signal generation, computer makes servomotor slow down immediately, promptly with low speed (V
1) continue to retreat, work as t
1=t
2The time, above-mentioned signal generation positive transition, computer continues low speed (V at slide unit (or workbench)
1) begin to seek initial point in retreating, work as t=t
3The time, rotary encoder sends the revolution pulse signal, and computer makes the servomotor spline immediately, and moving component promptly accurately stops at origin position.
Deceleration and initial point are searched when enabling signal is passed through near the switch surface by buting iron that moving component is with usually and are sent.With respect to moving component, there be between the above dispersion area of 0.01mm (as adopting mechanical stroke switch sender, also can a big order of magnitude between the dispersion area) in signal.If the buting iron position is unreasonable, make t
2And t
3Very close, then probably because of t
2The dispersion area chien shih t of moment signal location
3Revolution pulse signal constantly: 1. be positioned at t sometimes
2The left side; 2. be positioned at t sometimes
2The right.If situation 1., when this pulse occurred, slide unit had promptly stopped; And be situation 2. the time, then can slide unit be stopped.This will make slide unit (or workbench) initial point the error of a pitch occur.After this error produced, the error that a pitch appears in emery wheel slide unit (or workbench) initial point will take place.After this error produces, emery wheel will take place hit that explosion, frock are decreased, workpiece is scrapped even industrial accident.This shows that the initial point of grid location confirms that technology can guarantee under the situation of initial point accuracy usually, still exists ins and outs and incomplete potential safety hazard.
Therefore, need the grid localization method of initial point be improved, when slow down and the initial point search enable signal not in reasonable zone, computer is prompting operation person's inching switch enable position automatically, all can accurately be stopped at real initial point when guaranteeing to return initial point at every turn, avoid because of above-mentioned former resulting damage cutter fully, scrap security incidents such as workpiece and industrial injury.
Summary of the invention
In view of this; the purpose of this invention is to provide the guard method of a kind of Digit Control Machine Tool original point position protective device and original point position; when deceleration enabling signal and initial point search enable signal not in reasonable zone; computer is prompting operation person's inching switch enable position automatically; all can accurately be stopped at real initial point when guaranteeing to return initial point at every turn, avoid because of above-mentioned former resulting damage cutter fully, scrap security incidents such as workpiece and industrial injury.
Digit Control Machine Tool original point position protective device of the present invention comprises
Data acquisition module is used to gather deceleration enabling signal, initial point search enable signal and servomotor revolution pulse signal;
Computing module, be used for according to definite t1, the startup of former point search constantly t2 and the servomotor spline moment t3 constantly of slowing down of the data of data acquisition module input, and determine that former point search starts constantly t2 and the servomotor spline moving component stroke between the t3 and contrast with 1/N servomotor transmission pitch constantly, described N is any positive number less than servomotor transmission pitch, and the unit of described servomotor transmission pitch is a millimeter;
Alarm module is used to receive the order of computing module and sends alarm signal.
The invention also discloses a kind of method of utilizing Digit Control Machine Tool original point position protective device to carry out the original point position protection, may further comprise the steps:
A. data collecting module collected deceleration enabling signal, initial point search enable signal and servomotor revolution pulse signal;
B. computing module is determined former point search startup t2 and servomotor spline moment t3 constantly, and determines former point search startup moment t2 and the servomotor spline moving component stroke between the t3 constantly;
C. former point search is started t2 and moving component stroke between the t3 and the contrast of 1/N servomotor transmission pitch constantly of servomotor spline constantly, described N is any positive number less than servomotor transmission pitch, and the unit of described servomotor transmission pitch is a millimeter;
If d. former point search startup moment t2 and servomotor spline the moving component stroke between the t3 are constantly sent alarm command less than 1/N servomotor transmission pitch to alarm module, alarm module sends the indication of reporting to the police.
Further, described data acquisition module comprises near switch and servomotor encoder.
The invention has the beneficial effects as follows: the guard method of Digit Control Machine Tool original point position protective device of the present invention and original point position; adopt the mode of reporting to the police; limit former point search and start the moment and the moving component stroke of servomotor spline between the moment; when deceleration enabling signal and initial point search enable signal not in reasonable zone; computer is prompting operation person's inching switch enable position automatically; all can accurately be stopped at real initial point when guaranteeing to return initial point at every turn, guarantee not can because of former point tolerance be damaged cutter, scrap security incidents such as workpiece and industrial injury.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is Digit Control Machine Tool initial point grid positioning principle figure;
Fig. 3 is an original point position guard method flow chart of the present invention.
The specific embodiment
Fig. 1 is a structural representation of the present invention, and as shown in the figure: the Digit Control Machine Tool original point position protective device of present embodiment is an example with the numerically control grinder, comprises
Data acquisition module comprises being used to gather and slows down and the encoder 1 near the servomotor 4 of switch 8 and servomotor revolution pulse signal of initial point search enable signal; On moving component 6 with near the switch 8 corresponding buting iron 7 that are provided with;
Alarm module 3 is used to receive the order of computing module 2 and sends alarm signal.
Fig. 2 is Digit Control Machine Tool initial point grid positioning principle figure, present embodiment is example with the grinding machine, as shown in the figure: I is the direction of motion of moving component (slide unit or workbench), II is for slowing down and initial point is searched enabling signal, slow down and initial point search enabling signal by moving component 6 buting iron of be with 7 through sending when surperficial near switch 8; III is the revolution pulse signal that rotary encoder sends, and is sent by the encoder 1 of servomotor 4; When returning initial point, moving component retreats fast with high speed (Vh), works as t=t
1The time, slowing down and the negative saltus step of initial point search enabling signal generation, computer makes servomotor slow down immediately, promptly with low speed (V
1) continue to retreat; Work as t=t
2The time, above-mentioned signal generation positive transition, computer continues low speed (V at slide unit (or workbench)
1) begin to seek initial point in retreating; Work as t=t
3The time, rotary encoder sends the revolution pulse signal, and computer makes the servomotor spline immediately, and moving component promptly accurately stops at origin position.
Fig. 3 is an original point position guard method flow chart of the present invention, as shown in the figure: utilize the grinding machine initial point positioning protection device to carry out the method for original point position protection, may further comprise the steps:
A. begin to return former point operation, data collecting module collected is slowed down and initial point search enable signal and servomotor revolution pulse signal;
B. computing module is determined former point search startup t2 and servomotor spline moment t3 constantly, and determines former point search startup moment t2 and the servomotor spline moving component stroke between the t3 constantly;
C. former point search is started t2 and moving component stroke between the t3 and the contrast of 1/4 servomotor transmission pitch constantly of servomotor spline constantly;
If the moving component stroke between d. former point search startup moment t2 and the servomotor spline moment t3 is less than 1/4 servomotor transmission pitch, send alarm command to alarm module, alarm module sends the indication of reporting to the police, the operator is according to the position of caution fine setting buting iron 7, avoid mistaken ideas (being between the signal location dispersion area), assurance make former point search start constantly t2 and servomotor spline constantly the distance between the t3 greater than 1/4 servomotor transmission pitch, make servomotor spline moment t3 be positioned at former point search and start t2 left side constantly, thereby guaranteed the security of original point position; If former point search startup moment t2 and servomotor spline the moving component stroke between the t3 are constantly then proceeded operation greater than 1/4 servomotor transmission pitch.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. a Digit Control Machine Tool original point position protective device is characterized in that: comprise
Data acquisition module is used to gather deceleration enabling signal, initial point search enable signal and servomotor revolution pulse signal;
Computing module, be used for according to definite t1, the startup of former point search constantly t2 and the servomotor spline moment t3 constantly of slowing down of the data of data acquisition module input, and determine that former point search starts constantly t2 and the servomotor spline moving component stroke between the t3 and contrast with 1/N servomotor transmission pitch constantly, described N is any positive number less than servomotor transmission pitch, and the unit of described servomotor transmission pitch is a millimeter;
Alarm module is used to receive the order of computing module and sends alarm signal.
2. one kind is utilized the described Digit Control Machine Tool original point position of claim 1 protective device to carry out the method that original point position is protected, and it is characterized in that: may further comprise the steps:
A. data collecting module collected deceleration enabling signal, initial point search enable signal and servomotor revolution pulse signal;
B. computing module is determined former point search startup t2 and servomotor spline moment t3 constantly, and determines former point search startup moment t2 and the servomotor spline moving component stroke between the t3 constantly;
C. former point search is started t2 and moving component stroke between the t3 and the contrast of 1/N servomotor transmission pitch constantly of servomotor spline constantly, described N is any positive number less than servomotor transmission pitch, and the unit of described servomotor transmission pitch is a millimeter;
If d. former point search startup moment t2 and servomotor spline the moving component stroke between the t3 are constantly sent alarm command less than 1/N servomotor transmission pitch to alarm module, alarm module sends the indication of reporting to the police.
3. the method for original point position protection according to claim 2, it is characterized in that: described data acquisition module comprises near switch and servomotor encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810233349 CN101480786B (en) | 2008-12-16 | 2008-12-16 | Grinding machine initial point positioning-protecting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810233349 CN101480786B (en) | 2008-12-16 | 2008-12-16 | Grinding machine initial point positioning-protecting device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101480786A CN101480786A (en) | 2009-07-15 |
| CN101480786B true CN101480786B (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810233349 Expired - Fee Related CN101480786B (en) | 2008-12-16 | 2008-12-16 | Grinding machine initial point positioning-protecting device and method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776879B (en) * | 2009-12-29 | 2012-03-07 | 上海维宏电子科技有限公司 | Method for returning to mechanical reference point in numerical control machine tool system |
| CN102085623B (en) * | 2010-09-25 | 2012-06-27 | 宁波天瑞精工机械有限公司 | Method and device for controlling regression of feeding shaft of processing center to reference point |
| CN103831721A (en) * | 2012-11-28 | 2014-06-04 | 吴秉筠 | Grinding machine |
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2008
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| CN101480786A (en) | 2009-07-15 |
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Granted publication date: 20111005 Termination date: 20171216 |