CN101377669A - Method for knife-breaking and return withdrawing of deep hole rigid tapping - Google Patents
Method for knife-breaking and return withdrawing of deep hole rigid tapping Download PDFInfo
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- CN101377669A CN101377669A CNA2008101400701A CN200810140070A CN101377669A CN 101377669 A CN101377669 A CN 101377669A CN A2008101400701 A CNA2008101400701 A CN A2008101400701A CN 200810140070 A CN200810140070 A CN 200810140070A CN 101377669 A CN101377669 A CN 101377669A
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- breaking
- fallback
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Abstract
The present invention discloses a deep-hole rigid tapping fallback method for a broken cutter. An operation interface is provided with a tapping stopping key and a broken cutter fallback key, and the corresponding switching quantity is respectively used as the external interruption quantity for stopping the tapping instruction G331 and starting the tapping fallback instruction G332. The tapping process correspondingly comprises the following steps: initializing the operation parameters of the broken cutter; operating the broken cutter to be in the set tapping initial position; starting tapping with the tapping subprogram G331 instruction along with the real-time scanning of the port corresponding to the tapping stopping key through the tapping process; stopping the tapping and simultaneously scanning the port corresponding to the tapping fallback key when the input of the interruption quantity appears in the port; and calling the tapping fallback instruction G332 for the fallback of the cutter when the input of the tapping fallback interruption quantity occurs. The present invention has the advantage that when the cutter is broken, the deep-hole rigid tapping fallback for the broken cutter can be realized without damage to the workpiece and the machine tool driving system.
Description
(1) technical field
The present invention relates to a kind of method of knife-breaking and return withdrawing of deep hole rigid tapping, particularly, relate to a kind ofly when digital control system is made deep hole rigid tapping, handle tapping breaking situation, to prevent the method for defective work piece, lathe.
(2) background technology
In theory, during tapping, when main shaft is goed around, the feeding total amount of Z axle should equal the pitch of screw tap.That is:
P＝F/S
The pitch of P-screw tap in the formula, mm
The amount of giving of F-Z axle, mm/min
S-speed of mainshaft, r/min
General tapping function, the feeding of the rotating speed of main shaft and Z axle is independent control, therefore the condition above may not satisfy.Tapping finishes, and the rotating speed of main shaft and Z axle reduces and stops, and their counter-rotatings, and rotating speed then increase, owing to independently carry out acceleration, deceleration separately, therefore the condition above more may not satisfy.For this reason, by the spring that is contained in tap holder inside the amount of feeding is compensated to improve the precision of tapping usually.
If the rotation of control main shaft and the feeding of Z axle are always synchronous, the precision of tapping just can be guaranteed so.This method is called " rigid tapping ", and the operation of main shaft at this moment becomes the position control mode from speed control method and moves.The feeding that but wants to control the rotation of main shaft and Z axle is always synchronous, need depend on the precision of numerically-controlled machine self, and its gear train stands in the breach.If gear train is subjected to hard damage, then machine tool accuracy can't be guaranteed, and also just can't realize rigid tapping.
The rigid tapping system mainly comprises digital control system at present, the operation interface that is used for input working parameter, operational order, monitoring digital control system or demonstration numerical value, the machine tools control panel of external control lathe, system PLC and the drive unit that is controlled by digital control system, wherein digital control system drives tapping according to programming instruction or corresponding operating, and the control lathe moves according to intended target.Yet, present digital control system realizes that the method for tapping is fairly simple, at first by operation interface input tapping parameter---tapping speed, the tapping degree of depth, reference position, withdrawing speed etc., it more typically is exactly Siemens 840D digital control system, its default tapping recursive subroutine CYCLE84, this subroutine is directly called in the tapping of each tapping position, and tapping process is the black box state.The tapping parameter could be checked cutter (referring to screw tap here) in case setting only all finishes at all tapping stations.Said process occurs in case comprise the situation of breaking, also can't interrupt tapping process, shutdown system by force by normal operation.If still continue processing and untimely withdrawing from behind the cracking of cutter, the breaking motion does not have rule, will defective work piece; Simultaneously, the existence of breaking can make drill thrust increase suddenly or diminish, and gear train is brought rigid shock, destroys machine tool accuracy, shortens lathe serviceable life, reduces working (machining) efficiency, causes very big loss economically.Especially machine tool transmission system sustains damage, and then just can't guarantee the realization of rigid tapping, and infringement is fatal.
The method purpose of above-mentioned rigid tapping is that tapping process one cutter finishes, and can guarantee the workpiece processing precision, meets the initial purpose of rigid tapping.But will inevitably there be the above-mentioned defective that can't overcome in the method in the method, also the damage that therefore can cause workpiece and machine tool transmission system to retrieve.
(3) summary of the invention
The present invention provides a kind of under the situation of cracking of cutter in order to overcome the defective of rigid tapping method in the background technology, can avoid the method for the knife-breaking and return withdrawing of deep hole rigid tapping of its damage workpiece and machine tool transmission system.
For achieving the above object, the present invention is by the following technical solutions:
At operation interface tapping is set and stops and the withdrawing key, its corresponding switching value instructs G331 to stop the external interrupt amount that starts with tapping back-off instruction G332 as tapping respectively, and the tapping flow process is corresponding to be may further comprise the steps:
1) initialization cutter operational factor;
2) the operation cutter is to setting the tapping initial position;
3) call tapping subroutine G331 instruction beginning tapping, the corresponding port of tapping process real time scan tapping stop key;
4) if above-mentioned port has the input of interruption amount, then stop tapping, scan the corresponding port of tapping backspace key simultaneously;
5) if the input of tapping rollback interruption amount is arranged, call tapping back-off instruction G332, withdrawing.
The present invention realizes goal of the invention of the present invention in simple mode, and cost is few, and the R﹠D cycle is short.The present invention is not the introducing of simple two external interrupt amounts, the in good time selection that key is how tapping and withdrawing with how to adjust cutter and the usability methods of silk hole quality under different situations, to guarantee crudy, reduce the non-weathering damage of lathe.
The present invention is provided with tapping at operation interface and stops and the withdrawing key, its corresponding switching value instructs G331 to stop the external interrupt amount that starts with tapping back-off instruction G332 as tapping respectively, when the site operation personnel finds to have the breaking situation to occur or needs to check the tapping quality, then can start the above-mentioned tapping instruction key that stops, so as to stopping tapping, prevent the kinematic train of breaking damage workpiece and numerically-controlled machine.Withdrawing then is the above-mentioned subsequent handling that stops tapping, calls tapping back-off instruction G332 so as to realizing, so that silk hole and cutter are checked.
The method of above-mentioned knife-breaking and return withdrawing of deep hole rigid tapping in described tapping step, if cracking of cutter maybe needs to check the cutter situation, starts the tapping stop key, and the rollback cutter is checked the cutter situation to desired location.If tool damage is changed cutter, enter the tapping circulation after resetting operational factor according to cutter; If cutter does not damage, directly move to setting tapping initial position and enter the tapping circulation.
Perhaps in described tapping step, if need to check the tapping quality, start the tapping stop key, the rollback cutter is checked the silk hole to desired location.If silk hole quality reaches quality standards, then directly move to setting tapping initial position and enter the tapping circulation; If a silk hole quality does not reach quality standard, enter the tapping circulation after resetting the cutter operational factor.
Those skilled in the art will be well understood to the solution of the present invention, feature and advantage by following detailed description, and following detailed description discloses preferred implementation of the present invention in conjunction with Figure of description.
(4) description of drawings
Fig. 1 is the related method flow diagram of the preferred embodiment for the present invention.
(5) embodiment
Illustrate selected embodiment of the present invention referring now to Figure of description 1, those skilled in the art only are exemplary according to subordinate's explanation of embodiments of the invention of the present disclosure, the scheme that is not meant to limit the present invention.
Present embodiment is set in operation interface and tapping is set stops and the withdrawing key, and its corresponding switching value stops the external interrupt amount to start with tapping back-off instruction G332 as tapping instruction G331 respectively, and the tapping flow process is corresponding to be may further comprise the steps:
Step S101, initialization cutter operational factor comprises the position in cutter operation initial position, final position, each hole by operation interface input, i.e. cutter work speed, the cutter operational factor of rotating speed and withdrawing speed.
Step S102, the operation cutter is prepared tapping to setting the tapping initial position.
Step S103 calls the tapping subroutine and begins tapping, the corresponding port of tapping process real time scan tapping stop key.This step mainly is the mutual of introducing equipment and personnel, accepts operating personnel and checks the pulse that cutter or silk hole quality are pressed the tapping stop key because of needs, jumps to EOP (end of program) and stops tapping so as to making the tapping subroutine.
Whether step S104 stops tapping, if above-mentioned port has the input of interruption amount, then stops tapping, scans the corresponding port of tapping backspace key simultaneously.
Step S105, tapping is finished a tapping process, then to desired location
Step S106, withdrawing.
Step S107 checks whether the tapping that remains is finished, if all tapping is all finished, then tapping finishes, if also do not finish all tapping, then enters step S102, enters next hole tapping flow process.
The above-mentioned tapping incident that stops to relate to cutter inspection and silk hole quality check, and wherein, if will carry out the cutter inspection, the withdrawing step of then execution in step S104, and then execution in step S201 is called tapping back-off instruction G332; Then
Step S202 checks whether cutter damages, if cutter does not damage, then execution in step S102 reenters the tapping circulation; If tool damage, then execution in step S203 promptly changes the cutter operation, behind the replacing cutter, needs execution in step S101, resets the cutter operational factor, to guarantee the crudy of rigid tapping.Change cutter and reset the cutter operational factor and relatively lose time, compare, not only saved the time greatly, can also guarantee the crudy of institute's processing work but cause the workpiece damage to be subjected to physical damnification with NC Machine Tools Transmission System with respect to original breaking.
For step S104, if the quality in process silk hole is checked that the withdrawing step of then execution in step S104, and then execution in step S301 is called tapping back-off instruction G332; Then
Step S302 checks whether the silk hole reaches quality requirements, if quality conformance with standard, then execution in step S102; If non-conformity of quality closes requirement, need execution in step S101, to reset the cutter operational factor, processed the crudy in silk hole to guarantee.
Claims (5)
1. the method for a knife-breaking and return withdrawing of deep hole rigid tapping, it is characterized in that: at operation interface tapping is set and stops and the withdrawing key, its corresponding switching value instructs G331 to stop the external interrupt amount that starts with tapping back-off instruction G332 as tapping respectively, and the tapping flow process is corresponding to be may further comprise the steps:
1) initialization cutter operational factor;
2) the operation cutter is to setting the tapping initial position;
3) call tapping subroutine G331 instruction beginning tapping, the corresponding port of tapping process real time scan tapping stop key;
4) if above-mentioned port has the input of interruption amount, then stop tapping, scan the corresponding port of tapping backspace key simultaneously;
5) if the input of tapping rollback interruption amount is arranged, call tapping back-off instruction G332, withdrawing.
2. the method for knife-breaking and return withdrawing of deep hole rigid tapping according to claim 1 is characterized in that: in described tapping step, if cracking of cutter maybe needs to check the cutter situation, start the tapping stop key, the rollback cutter is to desired location, inspection cutter situation.
3. the method for knife-breaking and return withdrawing of deep hole rigid tapping according to claim 2 is characterized in that: if tool damage is changed cutter, enter the tapping circulation after resetting operational factor according to cutter; If cutter does not damage, directly move to setting tapping initial position and enter the tapping circulation.
4. the method for knife-breaking and return withdrawing of deep hole rigid tapping according to claim 1 is characterized in that: in described tapping step, if need to check the tapping quality, start the tapping stop key, the rollback cutter is checked the silk hole to desired location.
5. the method for knife-breaking and return withdrawing of deep hole rigid tapping according to claim 4 is characterized in that: if silk hole quality reaches quality standards, then directly move to setting tapping initial position and enter the tapping circulation; If a silk hole quality does not reach quality standard, enter the tapping circulation after resetting the cutter operational factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101400701A CN101377669B (en) | 2008-09-24 | 2008-09-24 | Method for knife-breaking and return withdrawing of deep hole rigid tapping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101400701A CN101377669B (en) | 2008-09-24 | 2008-09-24 | Method for knife-breaking and return withdrawing of deep hole rigid tapping |
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| Publication Number | Publication Date |
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| CN101377669A true CN101377669A (en) | 2009-03-04 |
| CN101377669B CN101377669B (en) | 2010-12-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029446A (en) * | 2009-09-29 | 2011-04-27 | 兄弟工业株式会社 | Numerical control device |
| CN108436201A (en) * | 2018-06-06 | 2018-08-24 | 珠海格力智能装备有限公司 | The backing method of rigid tapping |
| CN114571283A (en) * | 2022-03-07 | 2022-06-03 | 新代科技(苏州)有限公司 | Cutter retracting method used in machining |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI451932B (en) * | 2011-07-27 | 2014-09-11 | Nat Univ Chung Cheng | Locally reinforced learning control for rigid tapping |
-
2008
- 2008-09-24 CN CN2008101400701A patent/CN101377669B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029446A (en) * | 2009-09-29 | 2011-04-27 | 兄弟工业株式会社 | Numerical control device |
| CN102029446B (en) * | 2009-09-29 | 2013-02-27 | 兄弟工业株式会社 | Numerical control device |
| CN108436201A (en) * | 2018-06-06 | 2018-08-24 | 珠海格力智能装备有限公司 | The backing method of rigid tapping |
| CN114571283A (en) * | 2022-03-07 | 2022-06-03 | 新代科技(苏州)有限公司 | Cutter retracting method used in machining |
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| Publication number | Publication date |
|---|---|
| CN101377669B (en) | 2010-12-08 |
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Effective date of registration: 20210128 Address after: No.10, Jinan machine tool No.2 Factory Road, Huaiyin District, Jinan City, Shandong Province Patentee after: Jinan two machine tool Xinguang electromechanical Co.,Ltd. Address before: Two factory 250022 Ji'nan Road, Shandong province Huaiyin District No. 2 machine Patentee before: JIER MACHINE-TOOL GROUP Co.,Ltd. |
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