CN106944876A - A kind of lathe bit shift compensation method and system based on the working time - Google Patents
A kind of lathe bit shift compensation method and system based on the working time Download PDFInfo
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- CN106944876A CN106944876A CN201710187390.1A CN201710187390A CN106944876A CN 106944876 A CN106944876 A CN 106944876A CN 201710187390 A CN201710187390 A CN 201710187390A CN 106944876 A CN106944876 A CN 106944876A
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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
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/12—Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
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Abstract
The invention discloses a kind of lathe bit shift compensation method and system based on the working time, this method comprises the following steps：Kinematic axis displacement under kinematic axis volume and the volume, and volume and the corresponding relation of kinematic axis displacement according to kinematic axis are obtained during machine tool motion, the Function Mapping relation of kinematic axis volume and kinematic axis displacement is set up；Kinematic axis is in t1, t2, t3 during obtaining machine tool motion ... tn working times corresponding volume v1, v2, v3 ... vn, and set up machine tool motion axle working time and kinematic axis volume mapping table；Obtain kinematic axis current working time, and the retrieval kinematic axis target volume corresponding with the working time in the machine tool motion axle working time and kinematic axis volume mapping table；According to the kinematic axis target volume and kinematic axis volume and the Function Mapping Relation acquisition kinematic axis displacement of targets amount of kinematic axis displacement, and the kinematic axis is compensated.
Description
Technical field
The present invention relates to lathe bit shift compensation technical field, more particularly to a kind of lathe bit shift compensation based on the working time
Method and system.
Background technology
In the running, there is relative motion in lathe, the frictional heat such as lathe feed screw, nut seat, bearing between drive disk assembly,
So as to cause machine tool component thermal expansion, motion and the target of each kinematic axis shift, so as to cause machine tooling error.Solve
Certainly problem above is accomplished by monitoring the Volume Changes of each drive disk assembly, then according to each drive disk assembly deformation volume and change in displacement
Relativeness, calculate the shift value of lathe displacement, then compensate in digital control system, reach to machine tool error compensate mesh
's.
At present, most of lathes need the position of installation volume detection means more, and most of installation site is easily and lathe
Operation produces interference, easily produces larger error, is fitted without the big specification Digit Control Machine Tool of volume detection device then in longer fortune
Larger accuracy error is produced after row.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of lathe bit shift compensation based on the working time
Method and system；
A kind of lathe bit shift compensation method based on the working time proposed by the present invention, this method comprises the following steps：
S1, kinematic axis displacement under kinematic axis volume and the volume is obtained during machine tool motion, and according to kinematic axis
Volume and kinematic axis displacement corresponding relation, set up the Function Mapping relation of kinematic axis volume and kinematic axis displacement；
S2, obtain machine tool motion during kinematic axis in t1, t2, t3 ... volume v1, v2, v3 ... of tn working times
Vn, and set up machine tool motion axle working time and kinematic axis volume mapping table；
S3, acquisition the kinematic axis current working time, and in the machine tool motion axle working time and kinematic axis volume pair
Answer and kinematic axis target volume corresponding with the working time is retrieved in relation table；
S4, the Function Mapping Relation acquisition according to the kinematic axis target volume and kinematic axis volume and kinematic axis displacement
Kinematic axis displacement of targets amount, and the kinematic axis is compensated.
Wherein, in S3, the lathe work at present time is obtained by lathe PMC systems.
Wherein, in S2, the machine tool motion axle working time and kinematic axis volume mapping table are specifically included：t1
Start working time during displacement for kinematic axis, tn reaches working time during maximum displacement for kinematic axis, and v1 kinematic axis starts
Volume during displacement, vn reaches volume during maximum displacement for kinematic axis.
Wherein, in S1, the kinematic axis volume and the Function Mapping relation of kinematic axis displacement are specifically included：It is described
Function Mapping relation is divided into multistage interval, and each interval interior kinematic axis volume has different proportion coefficient with kinematic axis displacement.
Wherein, in S4, reflected according to the kinematic axis target volume and kinematic axis volume and the function of kinematic axis displacement
Relation acquisition kinematic axis displacement of targets amount is penetrated, is specifically included；Function Mapping relation is interval simultaneously where judging kinematic axis target volume
Corresponding proportionality coefficient is obtained, and kinematic axis displacement of targets amount is obtained according to the proportionality coefficient.
A kind of lathe bit shift compensation system based on the working time, the system includes：
Mapping relations module, move axial displacement under kinematic axis volume and the volume during machine tool motion for obtaining
Amount, and volume and the corresponding relation of kinematic axis displacement according to kinematic axis, set up kinematic axis volume and kinematic axis displacement
Function Mapping relation；
Relation table module, for obtaining machine tool motion during kinematic axis in t1, t2, t3 ... the volume of tn working times
V1, v2, v3 ... vn, and set up machine tool motion axle working time and kinematic axis volume mapping table；
Volume reckoning module, the working time current for obtaining kinematic axis, and in the machine tool motion axle working time
With retrieval kinematic axis target volume corresponding with the working time in kinematic axis volume mapping table；
Displacement compensating module, for according to the kinematic axis target volume and kinematic axis volume and kinematic axis displacement
Function Mapping Relation acquisition kinematic axis displacement of targets amount, and the kinematic axis is compensated.
Wherein, the volume calculates module, specifically for：The lathe work at present time is obtained by lathe PMC systems.
Wherein, the relation table module, specifically for：Set up machine tool motion axle working time pass corresponding with kinematic axis volume
It is table, wherein t1 starts working time during displacement for kinematic axis, tn reaches working time during maximum displacement, v1 for kinematic axis
Kinematic axis starts volume during displacement, and vn reaches volume during maximum displacement for kinematic axis.
Wherein, the mapping relations module, specifically for：The Function Mapping relation is divided into multistage interval, each interval
Interior kinematic axis volume has different proportion coefficient with kinematic axis displacement.
Wherein, the displacement compensating module, specifically for：Function Mapping relation area where judging kinematic axis target volume
Between and obtain corresponding proportionality coefficient, and kinematic axis displacement of targets amount is obtained according to the proportionality coefficient.
The present invention sets up fortune by obtaining during machine tool motion kinematic axis displacement under kinematic axis volume and the volume
Moving axis volume and the Function Mapping relation of kinematic axis displacement, while setting up machine tool motion axle working time and kinematic axis volume pair
Relation table is answered, is obtained by PMC systems after the lathe work at present time, corresponding target volume is searched in the relation table,
Further according to the Function Mapping Relation acquisition kinematic axis displacement so as to carry out bit shift compensation to kinematic axis, thus, without in phase
Same model Installing machine tool volume detection device, obtains target volume indirect again by the corresponding relation of lathe working time and volume
Kinematic axis displacement is obtained, so as to be compensated to machine tool motion axle, on the basis of the precision of machine tool processing workpiece is improved, is subtracted
Few lathe cost, realizes that lathe is intelligent and automates.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the lathe bit shift compensation method based on the working time proposed by the present invention；
Fig. 2 is a kind of module diagram of the lathe bit shift compensation system based on the working time proposed by the present invention.
Embodiment
As shown in figure 1, Fig. 1 is a kind of flow of the lathe bit shift compensation method based on the working time proposed by the present invention
Figure；
Reference picture 1, a kind of lathe bit shift compensation method based on the working time proposed by the present invention, this method includes following
Step：
Step S1, obtains during machine tool motion kinematic axis displacement under kinematic axis volume and the volume, and according to fortune
The volume of moving axis and the corresponding relation of kinematic axis displacement, set up kinematic axis volume and the Function Mapping of kinematic axis displacement is closed
System；
In this step, the kinematic axis volume and the Function Mapping relation of kinematic axis displacement, are specifically included：The letter
Number mapping relations are divided into multistage interval, and each interval interior kinematic axis volume has different proportion coefficient with kinematic axis displacement；
In the present embodiment, filled by pre-installing volume detection device on the lathe of same model, and being detected by volume
Put obtain machine tool motion during kinematic axis volume and the volume when kinematic axis displacement, further according to kinematic axis volume and
The corresponding relation of kinematic axis displacement, sets up the Function Mapping relation of volume and kinematic axis displacement, so only needs to obtain institute
State the volume in a certain working time during machine tool motion, you can pass through the displacement that the function model calculates current kinetic axle
Amount.
Step S2, kinematic axis is in t1, t2, t3 during obtaining machine tool motion ... the volume v1 of tn working times, v2,
V3 ... vn, and set up machine tool motion axle working time and kinematic axis volume mapping table；
In this step, the machine tool motion axle working time and kinematic axis volume mapping table, are specifically included：T1 is
Kinematic axis starts working time during displacement, and tn reaches working time during maximum displacement, v1 kinematic axis start bit for kinematic axis
Volume during shifting, vn reaches volume during maximum displacement for kinematic axis.
In the present embodiment, the working time when t1 working times start displacement for kinematic axis, now v1 is kinematic axis
Start volume during displacement；Tn reaches working time during maximum displacement for kinematic axis, and now vn reaches dominant bit for kinematic axis
Volume during shifting, when the kinematic axis work at present time being less than t1, judges that kinematic axis does not have displacement, without being mended to kinematic axis
Repay, when the kinematic axis work at present time being more than tn, judge that kinematic axis reaches maximum displacement value, now kinematic axis is carried out maximum
Displacement is compensated.
Step S3, obtains the kinematic axis current working time, and in the machine tool motion axle working time and motion axis body
Retrieval kinematic axis target volume corresponding with the working time in product mapping table；
In this step, the lathe work at present time is obtained by lathe PMC systems；
In the present embodiment, the lathe work at present time is obtained by lathe PMC systems, by the work at present time
Substitute into S4, obtain kinematic axis correspondence target volume.
Step S4, according to the kinematic axis target volume and kinematic axis volume and the Function Mapping relation of kinematic axis displacement
Kinematic axis displacement of targets amount is obtained, and the kinematic axis is compensated；
In this step, according to the kinematic axis target volume and kinematic axis volume and the Function Mapping of kinematic axis displacement
Relation acquisition kinematic axis displacement of targets amount, is specifically included；Function Mapping relation is interval where judging kinematic axis target volume and obtains
Corresponding proportionality coefficient is taken, and kinematic axis displacement of targets amount is obtained according to the proportionality coefficient.
In the present embodiment, by kinematic axis target volume, Function Mapping relation where kinematic axis target volume is judged
Interval simultaneously obtains corresponding proportionality coefficient, and the proportionality coefficient is multiplied with kinematic axis target volume and obtains kinematic axis displacement of targets
Amount, and the kinematic axis is compensated.
As shown in Fig. 2 Fig. 2 shows for a kind of module of the lathe bit shift compensation system based on the working time proposed by the present invention
It is intended to；
Reference picture 2, a kind of lathe bit shift compensation system based on the working time, including：
Mapping relations module, move axial displacement under kinematic axis volume and the volume during machine tool motion for obtaining
Amount, and volume and the corresponding relation of kinematic axis displacement according to kinematic axis, set up kinematic axis volume and kinematic axis displacement
Function Mapping relation；
Mapping relations module, specifically for：The kinematic axis volume and the Function Mapping relation of kinematic axis displacement, specifically
Including：The Function Mapping relation is divided into multistage interval, and each interval interior kinematic axis volume has not year-on-year with kinematic axis displacement
Example coefficient；
In the present embodiment, filled by pre-installing volume detection device on the lathe of same model, and being detected by volume
Put obtain machine tool motion during kinematic axis volume and the volume when kinematic axis displacement, further according to kinematic axis volume and
The corresponding relation of kinematic axis displacement, sets up the Function Mapping relation of volume and kinematic axis displacement, so only needs to obtain institute
State the volume in a certain working time during machine tool motion, you can pass through the displacement that the function model calculates current kinetic axle
Amount.
Relation table module, is connected with mapping relations module, for obtain during machine tool motion kinematic axis t1, t2,
Volume v1, v2, v3 ... vn of t3 ... tn working times, and it is corresponding with kinematic axis volume to set up the machine tool motion axle working time
Relation table；
Relation table module, specifically for：The machine tool motion axle working time and kinematic axis volume mapping table, specifically
Including：T1 starts working time during displacement for kinematic axis, and tn reaches working time during maximum displacement, v1 motions for kinematic axis
Axle starts volume during displacement, and vn reaches volume during maximum displacement for kinematic axis.
In the present embodiment, the working time when t1 working times start displacement for kinematic axis, now v1 is kinematic axis
Start volume during displacement；Tn reaches working time during maximum displacement for kinematic axis, and now vn reaches dominant bit for kinematic axis
Volume during shifting, when the kinematic axis work at present time being less than t1, judges that kinematic axis does not have displacement, without being mended to kinematic axis
Repay, when the kinematic axis work at present time being more than tn, judge that kinematic axis reaches maximum displacement value, now kinematic axis is carried out maximum
Displacement is compensated.
Volume calculates module, is connected with relation table module, the working time current for obtaining kinematic axis, and in the machine
Kinematic axis objective body corresponding with the working time is retrieved in bed motion axle working time and kinematic axis volume mapping table
Product；
Volume calculates module, specifically for：The lathe work at present time is obtained by lathe PMC systems；
In the present embodiment, the lathe work at present time is obtained by lathe PMC systems, by the work at present time
Send to displacement compensating module, obtain kinematic axis correspondence target volume.
Displacement compensating module, calculates that module is connected, for according to the kinematic axis target volume and kinematic axis with volume
Volume and the Function Mapping Relation acquisition kinematic axis displacement of targets amount of kinematic axis displacement, and the kinematic axis is compensated；
Displacement compensating module, specifically for：According to the kinematic axis target volume and kinematic axis volume and motion axle position
The Function Mapping Relation acquisition kinematic axis displacement of targets amount of shifting amount, is specifically included；Function where judging kinematic axis target volume reflects
Penetrate relation interval and obtain corresponding proportionality coefficient, and kinematic axis displacement of targets amount is obtained according to the proportionality coefficient.
In the present embodiment, by kinematic axis target volume, Function Mapping relation where kinematic axis target volume is judged
Interval simultaneously obtains corresponding proportionality coefficient, and the proportionality coefficient is multiplied with kinematic axis target volume and obtains kinematic axis displacement of targets
Amount, and the kinematic axis is compensated.
The foregoing is intended to be a preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of lathe bit shift compensation method based on the working time, it is characterised in that the described method comprises the following steps：
S1, kinematic axis displacement under kinematic axis volume and the volume is obtained during machine tool motion, and according to the body of kinematic axis
The corresponding relation of product and kinematic axis displacement, sets up the Function Mapping relation of kinematic axis volume and kinematic axis displacement；
S2, obtain machine tool motion during kinematic axis in t1, t2, t3 ... tn working times corresponding volume v1, v2, v3 ...
Vn, and set up machine tool motion axle working time and kinematic axis volume mapping table；
S3, acquisition the kinematic axis current working time, and in machine tool motion axle working time pass corresponding with kinematic axis volume
It is retrieval kinematic axis target volume corresponding with the working time in table；
S4, according to the Function Mapping Relation acquisition of the kinematic axis target volume and kinematic axis volume and kinematic axis displacement move
Axle displacement of targets amount, and the kinematic axis is compensated.
2. the lathe bit shift compensation method according to claim 1 based on the working time, it is characterised in that in S3, leads to
Cross lathe PMC systems and obtain the lathe work at present time.
3. the lathe bit shift compensation method according to claim 1 based on the working time, it is characterised in that in S2, institute
Machine tool motion axle working time and kinematic axis volume mapping table are stated, is specifically included：T1 starts work during displacement for kinematic axis
Make the time, tn reaches working time during maximum displacement for kinematic axis, and v1 kinematic axis starts volume during displacement, and vn is kinematic axis
Reach volume during maximum displacement.
4. the lathe bit shift compensation method according to claim 1 based on the working time, it is characterised in that in S1, institute
The Function Mapping relation of kinematic axis volume and kinematic axis displacement is stated, is specifically included：The Function Mapping relation is divided into multistage area
Between, each interval interior kinematic axis volume has different proportion coefficient with kinematic axis displacement.
5. the lathe bit shift compensation method according to claim 4 based on the working time, it is characterised in that in S4, root
According to the kinematic axis target volume and kinematic axis volume and the Function Mapping Relation acquisition kinematic axis target position of kinematic axis displacement
Shifting amount, is specifically included；Function Mapping relation where judging kinematic axis target volume is interval and obtains corresponding proportionality coefficient, and root
Kinematic axis displacement of targets amount is obtained according to the proportionality coefficient.
6. a kind of lathe bit shift compensation system based on the working time, it is characterised in that including：
Mapping relations module, for obtaining during machine tool motion kinematic axis displacement under kinematic axis volume and the volume, and
According to the volume of kinematic axis and the corresponding relation of kinematic axis displacement, set up kinematic axis volume and the function of kinematic axis displacement reflects
Penetrate relation；
Relation table module, for obtaining machine tool motion during kinematic axis in t1, t2, t3 ... the volume v1 of tn working times,
V2, v3 ... vn, and set up machine tool motion axle working time and kinematic axis volume mapping table；
Volume reckoning module, the working time current for obtaining kinematic axis, and in the machine tool motion axle working time and fortune
Kinematic axis target volume corresponding with the working time is retrieved in moving axis volume mapping table；
Displacement compensating module, for according to the kinematic axis target volume and kinematic axis volume and the function of kinematic axis displacement
Mapping relations obtain kinematic axis displacement of targets amount, and the kinematic axis is compensated.
7. the lathe bit shift compensation system according to claim 6 based on the working time, it is characterised in that the volume is pushed away
Module is calculated, specifically for：The lathe work at present time is obtained by lathe PMC systems.
8. the lathe bit shift compensation system according to claim 6 based on the working time, it is characterised in that the relation table
Module, specifically for：Machine tool motion axle working time and kinematic axis volume mapping table are set up, wherein t1 starts for kinematic axis
Working time during displacement, tn reaches working time during maximum displacement for kinematic axis, and v1 kinematic axis starts volume during displacement,
Vn reaches volume during maximum displacement for kinematic axis.
9. the lathe bit shift compensation system according to claim 6 based on the working time, it is characterised in that the mapping is closed
It is module, specifically for：The Function Mapping relation is divided into multistage interval, and each interval interior kinematic axis volume is with moving axial displacement
Amount has different proportion coefficient.
10. the lathe bit shift compensation system according to claim 9 based on the working time, it is characterised in that the displacement
Compensating module is measured, specifically for：Function Mapping relation where judging kinematic axis target volume is interval and obtains corresponding ratio system
Number, and kinematic axis displacement of targets amount is obtained according to the proportionality coefficient.
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| CN104977897A (en) * | 2014-04-04 | 2015-10-14 | 山东理工大学 | Numerical control machine tool space error compensation device |
| CN105798695A (en) * | 2016-04-18 | 2016-07-27 | 安徽省捷甬达智能机器有限公司 | Temperature rise compensation method for machine tool |
| CN105867303A (en) * | 2016-04-18 | 2016-08-17 | 安徽省捷甬达智能机器有限公司 | System for machine tool temperature difference compensation by referring to error |
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2017
- 2017-03-27 CN CN201710187390.1A patent/CN106944876A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308741A (en) * | 1998-07-10 | 2001-08-15 | 菲迪亚公司 | Process and system for compensating static errors on numerically controlled machine tools |
| RU2499658C1 (en) * | 2012-06-28 | 2013-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технологический университет "СТАНКИН" (ФГБОУ ВПО МГТУ "СТАНКИН") | Automatic compensation for nc metal cutter spindle thermal displacements |
| CN104977897A (en) * | 2014-04-04 | 2015-10-14 | 山东理工大学 | Numerical control machine tool space error compensation device |
| CN105798695A (en) * | 2016-04-18 | 2016-07-27 | 安徽省捷甬达智能机器有限公司 | Temperature rise compensation method for machine tool |
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