CN103273387A - Stiffness-measurement-based optimization method for cylindrical grinding process parameters - Google Patents

Stiffness-measurement-based optimization method for cylindrical grinding process parameters Download PDF

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CN103273387A
CN103273387A CN2013102397887A CN201310239788A CN103273387A CN 103273387 A CN103273387 A CN 103273387A CN 2013102397887 A CN2013102397887 A CN 2013102397887A CN 201310239788 A CN201310239788 A CN 201310239788A CN 103273387 A CN103273387 A CN 103273387A
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grinding
process parameters
workpiece
grinding process
stiffness
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李郝林
迟玉伦
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Abstract

The invention relates to a stiffness-measurement-based optimization method for cylindrical grinding process parameters. The method includes: 1, measuring machine tool static stiffness; 2, measuring grinding wheel spindle stiffness to optimize grinding process parameters. The method has the advantages that whether stiffness of a cylindrical grinder headstock, a tailstock center and a grinding wheel carriage system is satisfactory to the given grinding process parameters or not is analyzed; precision of ground workpieces is analyzed under certain grinding process parameters by measuring machine tool static stiffness and grinding wheel spindle stiffness according to a grinding force calculation formula so as to provide basis for the optimization of grinding process parameters.

Description

Cylindricalo grinding process parameter optimizing method based on stiffness measurement
Technical field
The present invention relates to a kind of cylindricalo grinding technology, especially a kind of cylindricalo grinding process parameter optimizing method.
Background technology
Cylindricalo grinding is to carry out main method accurate and ultraprecise processing, and the flutter phenomenon that unstable grinding causes in the process is one of key factor that influences workpiece surface quality.For the cylindricalo grinding parameters Optimization, generally be the stability curve according to grinding trembling, determine the technological parameter in the grinding, so that grinding process is under the prerequisite that flutter does not take place, the grinding task of finishing of peak efficiency.Yet there are two problems in this method when practical engineering application, the one, determine that the stability curve of grinding trembling is comparatively complicated, and the person grasps to be unsuitable for the machine operation; The 2nd, selection of process parameters has only considered that the constraint of flutter phenomenon does not take place grinding process, and fails to consider the factor of grinding accuracy.Therefore, need a kind of cylindricalo grinding process parameter optimizing method based on stiffness measurement, this method is by the measuring machine bed head frame and tail stock for machine tool is top and the quiet rigidity of workpiece, and calculate in conjunction with grinding force, obtain the deformation information of workpiece in the Grinding Process, determine the grinding process parameters of optimizing thus.The method is applicable to cylindrical plunge-cutting and longitudinal grinding method.
Summary of the invention
The present invention will provide a kind of cylindricalo grinding process parameter optimizing method based on stiffness measurement, for the evaluation lathe headstock, tail stock for machine tool rigidity top, the grinding carriage system provide foundation, provide foundation for optimizing grinding process parameters simultaneously, improve grinding efficiency and grinding quality effectively with this.
For achieving the above object, technical scheme of the present invention is: a kind of cylindricalo grinding process parameter optimizing method based on stiffness measurement the steps include:
1) the quiet stiffness measurement of lathe
Top at the lathe headstock, tail stock for machine tool is top and a displacement transducer is installed at workpiece middle part respectively, and in the workpiece middle part application of force, measures application of force value F with pressure sensor, the measuring machine bed head frame is top, tail stock for machine tool is top and workpiece middle part deflection Δ δ 1, Δ δ 2With Δ δ 3, by formula (1):
（1）
Obtain respectively that the lathe headstock is top, tail stock for machine tool is top and the static rigidity K at workpiece middle part 1, K 2, K 3
2) grinding wheel spindle stiffness measurement
At grinding wheel spindle place installation position displacement sensor, in the emery wheel middle part application of force, with the big or small F of pressure sensor ergometry w, and by its deflection Δ of displacement sensor δ w, by formula (2):
Figure 334565DEST_PATH_IMAGE002
（2）
Obtain the main axis stiffness K of emery wheel c
3) optimize grinding process parameters
According to Principle of Grinding and Cutting, by formula (3):
（3）
V in the formula s, v w, f, a be respectively the amount of feeding, the grinding cutting depth that grinding speed, workpiece alignment speed, workpiece rotate a circle, and determines normal grinding force F nSize, in conjunction with the measurement result of the quiet rigidity of lathe and grinding wheel spindle rigidity, obtain under the situation of certain grinding process parameters, the precision of workpiece grinding, thereby provide foundation for the optimization of grinding process parameters.
The invention has the beneficial effects as follows:
This invention can solve the problem of two aspects: can the rigidity that (1) analyzes the cylindrical grinder headstock, tailstock center, grinding carriage system satisfy the requirement of given grinding process parameters; (2) by measuring the quiet rigidity of lathe and grinding wheel spindle rigidity, analyze under certain grinding process parameters situation in conjunction with the normal grinding force computing formula, the grinding accuracy of workpiece provides foundation for optimizing grinding process parameters.
Description of drawings
Fig. 1 is the quiet stiffness measurement schematic diagram of lathe;
Fig. 2 is grinding wheel spindle stiffness measurement schematic diagram.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Cylindricalo grinding process parameter optimizing method based on stiffness measurement of the present invention the steps include:
1) pressure sensor is installed and the quiet stiffness measurement of lathe
As shown in Figure 1, displacement transducer is installed: choose Measurement Resolution less than 0.1 μ m and degree of protection IP65(waterproof) above displacement transducer 3, three displacement transducers 3 be installed in respectively that the lathe headstock is top 1, tailstock center 4 and workpiece 2 centre positions, displacement transducer 3 is used for measuring the deflection of emery wheel direction of feed.Obtain measuring-signal by computer by the A/D capture card.
Utilize hydraulic means in the workpiece middle part application of force, and utilize the big or small F of pressure sensor ergometry, measure its deflection Δ δ 1, Δ δ 2With Δ δ 3Obtain thus that the lathe headstock is top, tail stock for machine tool is top and be respectively K with the static rigidity at workpiece middle part 1, K 2, K 3, namely
Figure 842906DEST_PATH_IMAGE001
（1）
2) grinding wheel spindle stiffness measurement
As shown in Figure 2, utilize hydraulic means in the emery wheel 6 middle part application of forces, and utilize the big or small F of pressure sensor ergometry w, at grinding wheel spindle 5 place installation position displacement sensor 3, measure its deflection Δ δ wCalculated the main axis stiffness K of emery wheel by formula (2) c
Namely
Figure 973673DEST_PATH_IMAGE002
(2)
3) optimize grinding process parameters
Can be obtained being subjected to power F and F when workpiece and emery wheel by formula (1) and formula (2) wDo the time spent, the lathe headstock is top, tail stock for machine tool is top, the deflection of workpiece and emery wheel.Can be calculated and the grinding accuracy of analyzing workpiece by these deflections.According to Principle of Grinding and Cutting, the normal force F of cylindricalo grinding nDepend on grinding wheel characteristics, grinding work piece material and grinding process parameters, under the situation that emery wheel and workpiece material are determined, the normal force F of cylindricalo grinding nCan be obtained by corresponding computing formula, namely
Figure 112531DEST_PATH_IMAGE003
（3）
V in the formula s, v w, f, a be respectively the amount of feeding, the grinding cutting depth that grinding speed, workpiece alignment speed, workpiece rotate a circle.Can calculate different grinding process parameters v by formula (3) s, v w, under the f, a situation, the normal force F of cylindricalo grinding nAccording to Rigidity Calculation value K 1, K 2, K 3And K c, can analyze at the cylindrical filing to power F nEffect down, the lathe headstock is top, tail stock for machine tool is top, the deflection of workpiece middle part and grinding wheel spindle.In conjunction with size and the required precision of grinding work piece, can analyze at grinding process parameters v s, v w, under the f, a situation, be subjected to grinding force to influence the deflection of caused grinding work piece maximum.Thereby estimate grinding process parameters v s, v w, f, a reasonability, provide foundation for optimizing grinding process parameters.
Application case
This patent of invention is applied in the universal grinding machine external Grinding Process, and application process is as follows:
Experiment records the top rigidity of the lathe headstock, the quiet rigidity of the top rigidity of tail stock for machine tool and workpiece middle part is respectively: K 1=34. 03 * 10 6N/m, K 2=24.1 * 10 6N/m, K 3=30.12 * 10 6N/m.
Experiment records machine tool chief axis rigidity and is: K c=42. 13 * 10 6N/m.
For guaranteeing the machining accuracy of workpiece, set the top distortion of the lathe headstock
Figure 758276DEST_PATH_IMAGE004
Figure 7991DEST_PATH_IMAGE005
1um, the top distortion of tail stock for machine tool
Figure 993265DEST_PATH_IMAGE006
Figure 303023DEST_PATH_IMAGE005
1um, the distortion of workpiece middle part
Figure 436065DEST_PATH_IMAGE007
1um and grinding wheel spindle distortion
Figure 809911DEST_PATH_IMAGE005
0.8um.
Can calculate in the Grinding Process normal grinding force according to following formula (1) and (2)
Figure 164669DEST_PATH_IMAGE009
=
Figure 21767DEST_PATH_IMAGE010
Figure 716053DEST_PATH_IMAGE005
24.1N.
Known, the grinding technique parameter range is: 10m/s v s
Figure 475248DEST_PATH_IMAGE005
30m/s, 15mm/s
Figure 870457DEST_PATH_IMAGE005
v w
Figure 419250DEST_PATH_IMAGE005
30mm/s, 300mm/min
Figure 507292DEST_PATH_IMAGE005
f
Figure 774325DEST_PATH_IMAGE005
800mm/min, 2um
Figure 769963DEST_PATH_IMAGE005
a
Figure 438842DEST_PATH_IMAGE005
8um.
According to the grinding clearance =f a can set up the objective optimization function, is shown below:
Figure 186535DEST_PATH_IMAGE012
Function can one group of optimal design parameters variable be to obtaining wherein after the following formula optimization to use the MATLAB optimizer: X=[v s, v w, f, a]=[10m/s, 20mm/s, 300mm/min, 4um], namely grinding speed is that 10m/s, workpiece alignment speed 20mm/s, feed speed are that 300mm/min, grinding cutting depth are 4um.

Claims (1)

1. the cylindricalo grinding process parameter optimizing method based on stiffness measurement is characterized in that, the steps include:
1) the quiet stiffness measurement of lathe
Top at the lathe headstock, tail stock for machine tool is top and a displacement transducer is installed at workpiece middle part respectively, and in the workpiece middle part application of force, measures application of force value F with pressure sensor, the measuring machine bed head frame is top, tail stock for machine tool is top and workpiece middle part deflection Δ δ 1, Δ δ 2With Δ δ 3, by formula (1):
Figure 226895DEST_PATH_IMAGE002
（1）
Obtain respectively that the lathe headstock is top, tail stock for machine tool is top and the static rigidity K at workpiece middle part 1, K 2, K 3
2) grinding wheel spindle stiffness measurement
At grinding wheel spindle place installation position displacement sensor, in the emery wheel middle part application of force, with the big or small F of pressure sensor ergometry w, and by its deflection Δ of displacement sensor δ w, by formula (2):
Figure 144035DEST_PATH_IMAGE004
（2）
Obtain the main axis stiffness K of emery wheel c
3) optimize grinding process parameters
According to Principle of Grinding and Cutting, by formula (3):
Figure 923772DEST_PATH_IMAGE006
（3）
V in the formula s, v w, f, a be respectively the amount of feeding, the grinding cutting depth that grinding speed, workpiece alignment speed, workpiece rotate a circle, and determines normal grinding force F nSize, in conjunction with the measurement result of the quiet rigidity of lathe and grinding wheel spindle rigidity, obtain under the situation of certain grinding process parameters, the precision of workpiece grinding, thereby provide foundation for the optimization of grinding process parameters.
CN2013102397887A 2013-06-18 2013-06-18 Stiffness-measurement-based optimization method for cylindrical grinding process parameters Pending CN103273387A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522132A (en) * 2013-09-27 2014-01-22 南通职业大学 Grinding machining method for outer circle of universal joint pin neck
CN103759960A (en) * 2014-01-16 2014-04-30 北京工业大学 Device for testing reliability of numerical control grinder workhead
CN104669114A (en) * 2013-12-02 2015-06-03 宁波宝新不锈钢有限公司 Grinder flutter monitoring system and extracting and diagnostic method for grinding fault signal thereof
CN105058236A (en) * 2015-08-31 2015-11-18 苏州柏德纳科技有限公司 Clamping tool for cylindrical workpiece
CN105058177A (en) * 2015-08-31 2015-11-18 苏州柏德纳科技有限公司 Clamping tool for high-precision cylindrical workpiece
CN105710782A (en) * 2016-04-01 2016-06-29 上海理工大学 Plunge grinding contact stiffness measuring method based on time constant
CN106407683A (en) * 2016-09-19 2017-02-15 上海理工大学 A plunge grinding process parameter optimization method based on a grinding removal rate model
CN106863019A (en) * 2017-01-09 2017-06-20 西北工业大学 A kind of preparation method of the efficient low-stress grinding technological parameter of unimach
CN110375938A (en) * 2019-07-05 2019-10-25 上海理工大学 Headstock for cylindrical grinding machine dynamic stiffness measurement device and method
CN110411719A (en) * 2019-07-05 2019-11-05 上海理工大学 Grinding machine tailstock dynamic stiffness measurement device and evaluation method
CN113761678A (en) * 2021-08-17 2021-12-07 上海机床厂有限公司 Cylindrical grinding flutter general model and stability analysis method
CN116096531A (en) * 2020-08-31 2023-05-09 西门子股份公司 Method and device for determining holding force and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04354673A (en) * 1991-05-28 1992-12-09 Hitachi Seiko Ltd Control method for grinding machine
EP2159002A1 (en) * 2008-08-27 2010-03-03 China Steel Corporation Method for evaluating grinding parameters of grinding wheel
CN101829951A (en) * 2010-05-07 2010-09-15 上海理工大学 Outer circle grinding workpiece surface quality visualization real-time monitoring method
CN202648935U (en) * 2012-06-14 2013-01-02 上海理工大学 Cylindrical grinding machine grinding carriage main shaft rigidity measuring device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04354673A (en) * 1991-05-28 1992-12-09 Hitachi Seiko Ltd Control method for grinding machine
EP2159002A1 (en) * 2008-08-27 2010-03-03 China Steel Corporation Method for evaluating grinding parameters of grinding wheel
CN101829951A (en) * 2010-05-07 2010-09-15 上海理工大学 Outer circle grinding workpiece surface quality visualization real-time monitoring method
CN202648935U (en) * 2012-06-14 2013-01-02 上海理工大学 Cylindrical grinding machine grinding carriage main shaft rigidity measuring device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
尹明富等: "《机械制造技术基础实验》", 31 May 2008, article "机床静刚度实验", pages: 63-66 *
张金等: "回转支承滚道磨削力的计算", 《工程机械》, vol. 39, 30 November 2008 (2008-11-30), pages 54 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522132A (en) * 2013-09-27 2014-01-22 南通职业大学 Grinding machining method for outer circle of universal joint pin neck
CN103522132B (en) * 2013-09-27 2015-01-07 南通职业大学 Grinding machining method for outer circle of universal joint pin neck
CN104669114A (en) * 2013-12-02 2015-06-03 宁波宝新不锈钢有限公司 Grinder flutter monitoring system and extracting and diagnostic method for grinding fault signal thereof
CN103759960A (en) * 2014-01-16 2014-04-30 北京工业大学 Device for testing reliability of numerical control grinder workhead
CN103759960B (en) * 2014-01-16 2016-04-06 北京工业大学 A kind of numerically control grinder headstock reliability test
CN105058236A (en) * 2015-08-31 2015-11-18 苏州柏德纳科技有限公司 Clamping tool for cylindrical workpiece
CN105058177A (en) * 2015-08-31 2015-11-18 苏州柏德纳科技有限公司 Clamping tool for high-precision cylindrical workpiece
CN105710782A (en) * 2016-04-01 2016-06-29 上海理工大学 Plunge grinding contact stiffness measuring method based on time constant
CN106407683A (en) * 2016-09-19 2017-02-15 上海理工大学 A plunge grinding process parameter optimization method based on a grinding removal rate model
CN106407683B (en) * 2016-09-19 2019-01-15 上海理工大学 Crush grinding process parameter optimizing method based on grinding removal rate model
CN106863019A (en) * 2017-01-09 2017-06-20 西北工业大学 A kind of preparation method of the efficient low-stress grinding technological parameter of unimach
CN106863019B (en) * 2017-01-09 2018-08-07 西北工业大学 A kind of preparation method of the efficient low-stress grinding technological parameter of unimach
CN110375938A (en) * 2019-07-05 2019-10-25 上海理工大学 Headstock for cylindrical grinding machine dynamic stiffness measurement device and method
CN110411719A (en) * 2019-07-05 2019-11-05 上海理工大学 Grinding machine tailstock dynamic stiffness measurement device and evaluation method
CN110411719B (en) * 2019-07-05 2021-04-30 上海理工大学 Device for measuring dynamic stiffness of tail frame of grinding machine and evaluation method
CN116096531A (en) * 2020-08-31 2023-05-09 西门子股份公司 Method and device for determining holding force and storage medium
CN116096531B (en) * 2020-08-31 2024-06-07 西门子股份公司 Method and device for determining holding force and storage medium
CN113761678A (en) * 2021-08-17 2021-12-07 上海机床厂有限公司 Cylindrical grinding flutter general model and stability analysis method
CN113761678B (en) * 2021-08-17 2023-06-20 上海机床厂有限公司 Cylindrical grinding flutter general model and stability analysis method

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Application publication date: 20130904