CN105033753B - A kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position - Google Patents
A kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position Download PDFInfo
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- CN105033753B CN105033753B CN201510453869.6A CN201510453869A CN105033753B CN 105033753 B CN105033753 B CN 105033753B CN 201510453869 A CN201510453869 A CN 201510453869A CN 105033753 B CN105033753 B CN 105033753B
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- machine tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- Mechanical Engineering (AREA)
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Abstract
A kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position; the stroke of Digit Control Machine Tool feed shaft is divided into region 1 and region 2 by boundary of speed reducing switch position; region 1 is between speed reducing switch and negative limit switch; region 2 is between speed reducing switch and positive limit switch; can speed reducing switch signal be detected in powered on moment and during moving to positive limit switch according to Digit Control Machine Tool feed shaft, be respectively adopted it is normal return ginseng, ginseng is returned in region 2 and critical time three kinds of ginseng returns ginseng methods and realize that ginseng is disposably successfully returned in optional position.The inventive method simple possible, on the Digit Control Machine Tool for needing return reference point, as long as starting back ginseng button, no matter Digit Control Machine Tool feed shaft which position in the range of stroke, can disposably smoothly complete back ginseng action.
Description
Technical field
The present invention relates to a kind of method of Digit Control Machine Tool return reference point, more particularly to a kind of Digit Control Machine Tool at an arbitrary position may be used
In the method for full automatic disposable success return reference point.
Background technology
Digit Control Machine Tool return reference point is the important means for ensureing machining accuracy and safety.Return reference point operation is to establish lathe
The premise of coordinate system, if return reference point unsuccessfully will be unable to automatic running procedure；And the position inaccuracy of return reference point will
Machining accuracy is influenceed, even occurs hitting knife phenomenon.
Chinese invention patent《The feed shaft return reference point control method and control device of a kind of machining center》(Patent No.
201010292549.4) in, a kind of Digit Control Machine Tool feed shaft return reference point control method of machining center is disclosed, the invention is led to
Cross machine tool controller and be read out and judge flow relative to the position data of lathe coordinate system to numerical control machine tool feed axle, distinguish
Different sections so that Digit Control Machine Tool feed shaft takes corresponding speed to return machine coordinates reference point, avoids Digit Control Machine Tool feeding
The collision accident being likely to occur during axle return.This method has divided quick return area in reference axis, deceleration returns to area, blind
Dynamic area, clamped area.If lathe quickly returns the area that acts blindly (including clamped area), it is necessary to move Digit Control Machine Tool feed shaft manually and return to
Area is gone back to, then restarts return reference point pattern.
A kind of machine tool method of Digit Control Machine Tool return reference point as shown in Figure 1 is：Digit Control Machine Tool feed shaft is in starting point
Start to start, to find the speed Vc of reference point switch, (just spacing direction) is mobile towards the positive direction, and after triggering speed reducing switch, speed is fast
After speed reduces to 0, start reversely (bear spacing direction) mobile, run after certain distance again to find the speed Vm of zero pulse towards the positive direction
It is mobile；When the encoder zero pulse signal of feed servo motor occurs, Digit Control Machine Tool feed shaft is reached with locating speed Vp joins
Stop at examination point deviant Rv, now Digit Control Machine Tool feed shaft reference point mark occurs, and returns and joins successfully.In normal time ginseng, behaviour
Author must allow the Digit Control Machine Tool of lathe to feed shaft position (in region 1), can just smoothly complete back ginseng before speed reducing switch
Action；If Digit Control Machine Tool feed shaft (in region 2), when moving towards the positive direction, will not trigger speed reducing switch, directly behind speed reducing switch
To just spacing and stop motion of alarming is triggered, ginseng failure is returned.Therefore operator is it has to be ensured that Digit Control Machine Tool feeding shaft position exists
It can return and join successfully in region 1.Ginseng can not be returned in region 2.
In summary, in the prior art, it can not realize and return ginseng operation automatically in arbitrary region.
Therefore, a kind of method of return reference point is needed badly, to realize that Digit Control Machine Tool can automatically return ginseng at an arbitrary position
Examination point.
The content of the invention
, can not be in office to solve Digit Control Machine Tool it is an object of the invention to provide a kind of method of Digit Control Machine Tool return reference point
Anticipate position automatically disposable return reference point the problem of.
To achieve the above object, the solution of the present invention includes：
A kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position, it is characterised in that comprise the following steps：
Step (1)：The stroke of Digit Control Machine Tool feed shaft is divided into region 1 and region by boundary of speed reducing switch position
2, the region 1 between speed reducing switch and negative limit switch, the region 2 be located at speed reducing switch and positive limit switch it
Between；
Step (2)：When starting back ginseng, first check whether to receive speed reducing switch signal, if receiving speed reducing switch signal
Then Digit Control Machine Tool feed shaft returns to reference point with critical time moduli formula：Feed shaft is moved in region 1 to negative spacing direction first,
Then reference point is returned to normally to return moduli formula；
If not detecting speed reducing switch signal, Digit Control Machine Tool feed shaft starts to move to positive limit switch direction；
In moving process, if detecting speed reducing switch signal, Digit Control Machine Tool returns to reference point normally to return moduli formula；
If Digit Control Machine Tool feed shaft during being moved to positive limit switch direction, does not detect that speed reducing switch is believed
Number, then Digit Control Machine Tool feed shaft returns moduli formula with region 2 and returns to reference point：The number before positive limit switch signal is not detected
Machine tool feed axially positive limit switch direction movement is controlled, Digit Control Machine Tool feeding is axially negative spacing after detecting positive limit switch signal
Direction is moved, and is moved in region 1 and is stopped, then returns to reference point normally to return moduli formula.
Further, region 2 is returned in moduli formula, Digit Control Machine Tool feeding axially negative spacing direction movement, detects that deceleration is opened
Stopped at after setpoint distance Δ l is continued to run with after OFF signal in region 1.
Further, one is provided between reference point and positive limit switch to be used to detect numerical control machine tool feed shaft position
Auxiliary switch, region 2 are returned in moduli formula, if detecting auxiliary switch signal, Digit Control Machine Tool feed shaft reduces speed now, and is moved to
Stop after to positive limit switch.
The present invention proposes a kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position, without operator before start
Judge that Digit Control Machine Tool feeds shaft position whether before speed reducing switch, without artificial interference and manual moving coordinate axle.No matter number
The original position for controlling machine tool feed axle wherein, all turns first to region 1, so by certain way Digit Control Machine Tool feed shaft
Moduli formula return reference point is normally returned with region 1 again afterwards, so that machine coordinates axle can be returned disposably automatically at an arbitrary position
Reference point success, has prevented time ginseng failure and the generation of car accident, and the full-automatic disposable ginseng of returning for successfully returning examination point of realization is moved
Make.
Brief description of the drawings
Fig. 1 is return reference point action diagram (normal to return ginseng) in region 1；
Fig. 2 is hardware connection figure；
Fig. 3 is program flow diagram；
Fig. 4 is return reference point action diagram in region 2 (ginseng is returned in region 2)；
Fig. 5 is return reference point action diagram (the critical time ginseng) at two region critical points.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
As shown in figure 4, close to the position of positive limit switch increasing auxiliary switch on original lathe, (particular location is
Between reference point and positive limit switch) so that Digit Control Machine Tool feed shaft close to positive limit switch when, can pre-decelerating, make
Obtain lathe slowly to stop, avoiding aligning the excessive impact of limit switch generation.From figure 2 it can be seen that " palm fibre+" of auxiliary switch
Terminate the positive pole "+24V " of 3 (power supplys), the negative pole " 24N " of 3 (power supplys) of " blue-" termination of auxiliary switch 4, proximity switch 4 it is " black
Color " line end connects 2 (PLC) input port " INPUT ", and so far, the line work for increasing hardware is completed.Wherein PLC and 1 (NCU)
It is connected.
As shown in figure 3, whether controller detection speed reducing switch has signal output first, if signal output then numerical control machine
Bed feed shaft is with critical time moduli formula return reference point；When the controller detects that speed reducing switch does not have signal output, then numerical control machine
Bed feed shaft starts positive movement, if controller detects that speed reducing switch is believed in Digit Control Machine Tool feed shaft forward direction moving process
Number, illustrate the starting position of Digit Control Machine Tool feed shaft in zone 1, then Digit Control Machine Tool feed shaft returns reference normally to return moduli formula
Point；If controller does not detect speed reducing switch signal in Digit Control Machine Tool feed shaft forward direction moving process, illustrate numerical control machine
The starting position of bed feed shaft is in region 2, then Digit Control Machine Tool feed shaft returns moduli formula return reference point with region 2.
Moduli formula is normally returned to above-mentioned separately below, moduli formula is returned in region 2 and critical time moduli formula is specifically described.
It is that ginseng is returned in region 1 normally to return moduli formula, i.e. controller is not detected by Digit Control Machine Tool feed shaft setting in motion and subtracted
Fast switching signal and speed reducing switch signal is detected during positive movement, illustrate that the starting position of Digit Control Machine Tool feed shaft is located at
In region 1, Digit Control Machine Tool feed shaft normally returns moduli formula and has been described in detail in the introduction using moduli formula is normally returned,
It will not be repeated here.
Moduli formula is returned in region 2：In Digit Control Machine Tool feeding axially positive limit switch moving process, controller does not detect
To speed reducing switch signal, illustrate that the starting position of Digit Control Machine Tool feed shaft is located in region 2.As shown in figure 4, return number after ginseng starts
Machine tool feed axle is controlled to start, it is mobile to find the speed Vc positive (positive limit switch direction) of reference point switch, it is mobile in forward direction
During without triggering speed reducing switch be allowed to produce signal, continue to positive limit switch direction move.In Digit Control Machine Tool feed shaft
After triggering auxiliary switch, the translational speed of Digit Control Machine Tool feed shaft reduces rapidly, and runs to just spacing open with the speed of very little
At pass and then out of service, controller receives the signal of positive limit switch, then sends control life to Digit Control Machine Tool feed shaft
Order so that axially reversely (negative limit switch direction) is mobile for Digit Control Machine Tool feeding, when Digit Control Machine Tool feed shaft triggers speed reducing switch
Afterwards, reduce speed now and continue to stop after moving backward a certain distance Δ l, now Digit Control Machine Tool feed shaft is located at region 1, then
Digit Control Machine Tool feed shaft is normally to go back to the position that moduli formula returns to reference point.Auxiliary switch is travel switch, as other implementations
Mode, auxiliary switch can also be proximity switches.
Critical time moduli formula：As shown in figure 5, returning controller when ginseng starts detects speed reducing switch signal, illustrate numerical control
The position of machine tool feed axle is in the intersection in region 1 and region 2, i.e. critical point position, now Digit Control Machine Tool feed shaft is with critical
Return moduli formula and return to reference point.Controller sends order to Digit Control Machine Tool feed shaft makes it reversely (bear spacing direction) with speed Vc
Stop after moving a certain distance Δ l, now Digit Control Machine Tool feed shaft is had been positioned in region 1, then and normally to return moduli formula
Reference point is returned to, ginseng process is normally returned and repeats no more.
The design parameters such as above-mentioned Vc, Δ l can be actually needed taking human as basis and be configured.Moduli formula is normally returned, region 2 is returned
The parameter used in moduli formula and critical time moduli formula can be with identical, can also be different.
Above-described embodiment gives the embodiment for increasing auxiliary switch between reference point and positive limit switch, is used as it
His embodiment can also be not added with auxiliary switch, and such Digit Control Machine Tool feed shaft does not slow down to be moved to positive limit switch direction, directly
To after triggering positive limit switch, controller sends order to Digit Control Machine Tool feed shaft makes its reverse movement, when Digit Control Machine Tool is fed
After axle triggering speed reducing switch, slow down and continue to stop after moving backward a certain distance Δ l, now Digit Control Machine Tool feed shaft is located at
Region 1, Digit Control Machine Tool feed shaft return to reference point normally to return moduli formula.
As other embodiment, region 2 is returned in moduli formula, after positive limit switch is triggered, can be ignored deceleration and be opened
OFF signal, directly (such as to set heterodromous distance) in the motion that has programmed to region 1.
The embodiment the present invention relates to theme is presented above, but the present invention is not limited to described embodiment party
Formula.Under the thinking that provides of the present invention, using by the way of being readily apparent that to those skilled in the art in above-described embodiment
Technological means enter line translation, replacement, modification, and play a part of with the present invention in relevant art means it is essentially identical,
The goal of the invention of realization is also essentially identical, and the technical scheme so formed is finely adjusted to be formed to above-described embodiment, this
Technical scheme is still fallen within protection scope of the present invention.
Claims (2)
- A kind of 1. method of the full-automatic return reference point in Digit Control Machine Tool optional position, it is characterised in that comprise the following steps：Step (1)：The stroke of Digit Control Machine Tool feed shaft is divided into region 1 and region 2, institute by boundary of speed reducing switch position Region 1 is stated between speed reducing switch and negative limit switch, the region 2 is between speed reducing switch and positive limit switch；Step (2)：When starting back ginseng, first check whether to receive speed reducing switch signal, counted if speed reducing switch signal is received Control machine tool feed axle returns to reference point with critical time moduli formula：Feed shaft is moved in region 1 to negative spacing direction first, then Reference point is returned to normally to return moduli formula；If not detecting speed reducing switch signal, Digit Control Machine Tool feed shaft starts to move to positive limit switch direction；Moving During dynamic, if detecting speed reducing switch signal, Digit Control Machine Tool returns to reference point normally to return moduli formula；If Digit Control Machine Tool feed shaft does not detect speed reducing switch signal during being moved to positive limit switch direction, Then Digit Control Machine Tool feed shaft returns moduli formula with region 2 and returns to reference point：The numerical control before positive limit switch signal is not detected Machine tool feed axially positive limit switch direction movement, spacing side is born in Digit Control Machine Tool feeding axial direction after detecting positive limit switch signal To movement, it is moved in region 1 and stops, then return to reference point normally to return moduli formula；An auxiliary switch for being used to detect numerical control machine tool feed shaft position, region are provided between reference point and positive limit switch In 2 times moduli formulas, if detecting auxiliary switch signal, Digit Control Machine Tool feed shaft reduces speed now, and is moved to positive limit switch After stop；The auxiliary switch is travel switch or proximity switch；Wherein, normally returning moduli formula detailed process is：Digit Control Machine Tool feed shaft starts to start in starting point, is opened with finding reference point The speed of pass moves towards positive limit switch direction, and after triggering speed reducing switch, Digit Control Machine Tool feeding axle speed reduces to rapidly 0, then Start to move to negative limit switch direction, moved towards the positive direction with finding the speed of zero pulse again after running certain distance；Work as feeding When the encoder zero pulse signal of servomotor occurs, Digit Control Machine Tool feed shaft is reached with locating speed to be stopped at reference point, is returned Join successfully.
- A kind of 2. method of full-automatic return reference point in Digit Control Machine Tool optional position according to claim 1, it is characterised in that Region 2 is returned in moduli formula, Digit Control Machine Tool feeding axially negative spacing direction movement, is detected to continue to run with after speed reducing switch signal and is set Stopped at after set a distance Δ l in region 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510453869.6A CN105033753B (en) | 2015-07-29 | 2015-07-29 | A kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position |
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| CN201510453869.6A CN105033753B (en) | 2015-07-29 | 2015-07-29 | A kind of method of the full-automatic return reference point in Digit Control Machine Tool optional position |
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| CN109388156B (en) * | 2018-11-26 | 2021-07-09 | 中国航空工业集团公司洛阳电光设备研究所 | Zero searching method of incremental encoder through image area code |
| CN111007802B (en) * | 2019-10-09 | 2020-11-27 | 珠海格力电器股份有限公司 | Control method and control system for shutdown of numerical control machine tool due to data loss |
| CN110865560A (en) * | 2019-11-06 | 2020-03-06 | 泰德激光惠州有限公司 | Zero-returning motion control method, terminal device and computer readable storage medium |
| CN113985811B (en) * | 2021-11-01 | 2024-03-22 | 珠海格力电器股份有限公司 | Anti-collision control method for numerical control machine tool and numerical control machine tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6031605A (en) * | 1983-07-29 | 1985-02-18 | Fanuc Ltd | Method for returning to original point in numerical control device |
| JPS62191902A (en) * | 1986-02-18 | 1987-08-22 | Omron Tateisi Electronics Co | Origin return method in numerical controller |
| JPH1049233A (en) * | 1996-08-07 | 1998-02-20 | Nec Eng Ltd | Control unit for pulse motor |
| JP5382419B2 (en) * | 2009-01-29 | 2014-01-08 | オムロン株式会社 | Origin search support device and program |
| CN102707662B (en) * | 2012-05-15 | 2014-06-25 | 广州数控设备有限公司 | Zero returning control method based on industrial Ethernet bus technology |
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Application publication date: 20151111 Assignee: Jiangxi Ruixin Shengkai Technology Co.,Ltd. Assignor: HENAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2022980029807 Denomination of invention: A method of automatic return to reference point at any position of CNC machine tool Granted publication date: 20180410 License type: Common License Record date: 20230114 |
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Application publication date: 20151111 Assignee: LUOYANG LIBO NUMERICAL CONTROL TECHNOLOGY Co.,Ltd. Assignor: HENAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2023980034466 Denomination of invention: A Method for Fully Automatic Return to Reference Points at Any Position of CNC Machine Tools Granted publication date: 20180410 License type: Common License Record date: 20230407 |