CN105643370B - A kind of Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis - Google Patents
A kind of Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis Download PDFInfo
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- CN105643370B CN105643370B CN201610131124.2A CN201610131124A CN105643370B CN 105643370 B CN105643370 B CN 105643370B CN 201610131124 A CN201610131124 A CN 201610131124A CN 105643370 B CN105643370 B CN 105643370B
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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
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
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Abstract
The present invention relates to it is a kind of based on instruction domain analysis Digit Control Machine Tool compensation of modeling erroror method,（1）It is determined that task data w1, in advance manufacturing recourses data w2 and error compensation data w3 in advance,（2）Operation sensing data U, internal automatically controlled data V, external sense data M during collection work of numerical control machine,（3）Related mapping relations function Y { U, V, M }=y { w1, w2, w3 }, the model using the mapping relations as work of numerical control machine process are established in cyberspace, you can realize to numerical control Machining modeling；The modeling parameters to most important working stage in Digit Control Machine Tool Life cycle can be achieved in the present invention, error compensation are carried out, suitable for various workpiece, to improve Precision of NC Machine Tool.
Description
Technical field
The present invention relates to a kind of Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis, belong to digital control system skill
Art field.
Background technology
Digit Control Machine Tool is the abbreviation of numerically-controlled machine tool, is a kind of automated machine tool equipped with program control system.The control
System processed can be handled logically with control coding or other symbolic instruction regulated procedures, and is decoded, with code
Numeral expression, numerical control device is inputted by information carrier, and model analysis is a kind of modern age method of research structure dynamic characteristics,
It is application of the system identification method in Engineering Vibration field, is advantageous to improve machining property by model analysis.
The relative motion precision that the machining accuracy of workpiece is depended between cutter and workpiece, lathe are easy in use
Thermal Error and geometric error are produced, so as to limit Precision of NC Machine Tool, therefore Machine Tool Modal parameter error is compensated, is advantageous to subtract
Few dependence to artificial experience, promote the development of automatic identification modal parameter.
The content of the invention
The purpose of the present invention is the defects of being directed to prior art, there is provided a kind of Digit Control Machine Tool modeling based on instruction domain analysis
Error compensating method, the modeling parameters to most important working stage in Digit Control Machine Tool Life cycle are realized, carry out error compensation,
Suitable for various workpiece, to improve Precision of NC Machine Tool.
The present invention is achieved by the following technical solutions：
A kind of Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis, its method are as follows：
（1）Before Digit Control Machine Tool performs task, it is determined that task data w1, in advance manufacturing recourses data w2 in advance
Include cutter path information, tool changing information and cutting depth letter with error compensation data w3, the data of the task in advance w1
Breath, the data of the manufacturing recourses in advance w2 include machine tool type and parameter, tool type and parameter, clamp types and parameter and work
Part material and parameter, the error compensation data w3 include crucial temperature detector number and measurement range, die size and surface point
Number and fixture clamping position parameter；
（2）In step（1）Under conditions of middle w1, w2, w3 are determined, make work of numerical control machine, gather work of numerical control machine mistake
Operation sensing data U, internal automatically controlled data V, external sense data M, the external sense data M in journey include n temperature-sensitive
The temperature-averaging variable signal a of device, the displacement signal b of i die size surface point and the displacement signal of s fixture clamping position
c；
Wherein a=∑ { △ T1, △ T2, △T3,…△Tn}/n, wherein △ T are temperature variation；
b=∑{[△ex, △ey, … △ez]1+[△ex, △ey, … △ez]2+…[△ex, △ey, … △
ez]i}/i, wherein △ e are the displacement variable of die size surface point, and x, y ... z are axial coordinate；
c=∑{[△dx, △dy, … △dz]1+[△dx, △dy, … △dz]2+…[△dx, △dy, … △
dz]s}/s, wherein △ d are the displacement variable of fixture clamping position, and x, y ... z are axial coordinate；
Corresponding function M=ha+jb+kc is established, wherein h, j, k is parameter；
（3）By step（1）The data of task in advance w1, in advance manufacturing recourses data w2 and the error compensation data w3
As input, using operation sensing data U, internal automatically controlled data V and external sense data M as output, established in cyberspace
Related mapping relations function Y { U, V, M }=y { w1, w2, w3 }, the mould using the mapping relations as work of numerical control machine process
Type, you can realize to numerical control Machining modeling.
A kind of above-mentioned Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis, wherein, h=0.6 ~ 0.7, j
=0.1 ~ 0.2, k=0.2 ~ 0.3.
Beneficial effects of the present invention are：
The present invention is made using mapping relations function related to external sense data M foundation Acquisition Error offset data w3
The temperature-averaging variable signal a of temperature detector in error compensation data w3, the displacement signal of i die size surface point b and s
The displacement signal c of fixture clamping position obtains modeling the compensation of the temperature difference and geometric error, rather than single error characterizes, and is machine
Bed system has more preferable precision, and this method is convenient and easy, realizes to most important work rank in Digit Control Machine Tool Life cycle
The modeling parameters of section, error compensation is carried out, suitable for various workpiece.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Digit Control Machine Tool compensation of modeling erroror method of the kind based on instruction domain analysis, its method are as follows：
（1）Before Digit Control Machine Tool performs task, it is determined that task data w1, in advance manufacturing recourses data w2 in advance
Include cutter path information, tool changing information and cutting depth letter with error compensation data w3, the data of the task in advance w1
Breath, the data of the manufacturing recourses in advance w2 include height step on VMC850L serial, tool type and parameter, clamp types and parameter and
Workpiece material and parameter, the error compensation data w3 include crucial temperature detector number and measurement range, die size and surface
Count out and fixture clamping position parameter；
（2）In step（1）Under conditions of middle w1, w2, w3 are determined, make work of numerical control machine, gather work of numerical control machine mistake
Operation sensing data U, internal automatically controlled data V, external sense data M, the external sense data M in journey include n temperature-sensitive
The temperature-averaging variable signal a of device, the displacement signal b of i die size surface point and the displacement signal of s fixture clamping position
c；
Wherein a=∑ { △ T1, △ T2, △T3,…△Tn}/n, wherein △ T are temperature variation；
b=∑{[△ex, △ey, … △ez]1+[△ex, △ey, … △ez]2+…[△ex, △ey, … △
ez]i}/i, wherein △ e are the displacement variable of die size surface point, and x, y ... z are axial coordinate；
c=∑{[△dx, △dy, … △dz]1+[△dx, △dy, … △dz]2+…[△dx, △dy, … △
dz]s}/s, wherein △ d are the displacement variable of fixture clamping position, and x, y ... z are axial coordinate；
Corresponding function M=0.6a+0.1b+0.3c is established, wherein h, j, k is parameter；
（3）By step（1）The data of task in advance w1, in advance manufacturing recourses data w2 and the error compensation data w3
As input, using operation sensing data U, internal automatically controlled data V and external sense data M as output, established in cyberspace
Related mapping relations function Y { U, V, M }=y { w1, w2, w3 }, the mould using the mapping relations as work of numerical control machine process
Type, you can realize to numerical control Machining modeling.
The present invention realizes the modeling parameters to most important working stage in Digit Control Machine Tool Life cycle, carries out error benefit
Repay, suitable for various workpiece, to improve Precision of NC Machine Tool.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all cover within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection domain of claims
It is defined.
Claims (2)
1. a kind of Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis, it is characterized in that, its method is as follows：
（1）Before Digit Control Machine Tool performs task, it is determined that task data w1, in advance manufacturing recourses data w2 and mistake in advance
Poor offset data w3, the data of the task in advance w1 include cutter path information, tool changing information and cutting depth information, institute
Stating manufacturing recourses data w2 in advance includes machine tool type and parameter, tool type and parameter, clamp types and parameter and workpiece material
Material and parameter, the error compensation data w3 includes crucial temperature detector number and measurement range, die size and surface is counted out,
With fixture clamping position parameter；
（2）In step（1）Under conditions of middle w1, w2, w3 are determined, make work of numerical control machine, during gathering work of numerical control machine
Operation sensing data U, internal automatically controlled data V, external sense data M, the external sense data M include n temperature detector
Temperature-averaging variable signal a, the displacement signal b of i die size surface point and the displacement signal c of s fixture clamping position；
Wherein a=∑ { △ T1, △ T2, △T3,…△Tn}/n, wherein △ T are temperature variation；
b=∑{[△ex, △ey, … △ez]1+[△ex, △ey, … △ez]2+…[△ex, △ey, … △ez]i}/
I, wherein △ e are the displacement variable of die size surface point, and x, y ... z are axial coordinate；
c=∑{[△dx, △dy, … △dz]1+[△dx, △dy, … △dz]2+…[△dx, △dy, … △dz]s}/
S, wherein △ d are the displacement variable of fixture clamping position, and x, y ... z are axial coordinate；
Corresponding function M=ha+jb+kc is established, wherein h, j, k is parameter；
（3）By step（1）The data of the task in advance w1, in advance manufacturing recourses data w2 and error compensation data w3 conducts
Input, using operation sensing data U, internal automatically controlled data V and external sense data M as output, established in cyberspace related
Mapping relations function Y { U, V, M }=y { w1, w2, w3 }, the model using the mapping relations as work of numerical control machine process, i.e.,
It can be achieved to numerical control Machining modeling.
2. a kind of Digit Control Machine Tool compensation of modeling erroror method based on instruction domain analysis as claimed in claim 1, it is characterized in that,
H=0.6 ~ 0.7, j=0.1 ~ 0.2, k=0.2 ~ 0.3.
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| CN102004466A (en) * | 2010-10-25 | 2011-04-06 | 武汉华中数控股份有限公司 | Method for compensating numerical control machine processing dynamic error based on instruction sequence analysis |
| CN102629121A (en) * | 2012-04-24 | 2012-08-08 | 上海交通大学 | Intelligent compensation system for geometrical and heating position errors of numerical control machine |
| CN104057363A (en) * | 2014-06-10 | 2014-09-24 | 浙江大学 | Three-axis numerical control machine tool geometrical error compensation method based on workpiece model rebuilding |
| CN104898562A (en) * | 2015-04-27 | 2015-09-09 | 攀枝花学院 | Modeling method of thermal error compensation of numerically-controlled machine tool |
| CN104932421A (en) * | 2015-06-19 | 2015-09-23 | 华中科技大学 | Numerical control machine work process CPS modeling method based on instruction domain analysis |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1997043703A1 (en) * | 1996-05-10 | 1997-11-20 | Automated Precision, Inc. | Real time machine tool error correction using global differential wet modeling |
| CN102004466A (en) * | 2010-10-25 | 2011-04-06 | 武汉华中数控股份有限公司 | Method for compensating numerical control machine processing dynamic error based on instruction sequence analysis |
| CN102629121A (en) * | 2012-04-24 | 2012-08-08 | 上海交通大学 | Intelligent compensation system for geometrical and heating position errors of numerical control machine |
| CN104057363A (en) * | 2014-06-10 | 2014-09-24 | 浙江大学 | Three-axis numerical control machine tool geometrical error compensation method based on workpiece model rebuilding |
| CN104898562A (en) * | 2015-04-27 | 2015-09-09 | 攀枝花学院 | Modeling method of thermal error compensation of numerically-controlled machine tool |
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