Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (4): 1221-1227.doi: 10.13229/j.cnki.jdxbgxb20180703

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Tool path generation of slow tool servo for active control machining error

Hong⁃bin CAI(),Guo⁃quan SHI()   

  1. College of Mechanical and Electric Engineering，Changchun University of Science and Technology，Changchun 130022，China
  • Received:2018-06-12 Online:2019-07-01 Published:2019-07-16
  • Contact: Guo?quan SHI E-mail:chb@cust.edu.cn;shigq@sibet.ac.cn

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Abstract:

A tool path generation method for active control machining errors is proposed taking into consideration that, in optical freeform surface slow tool servo, the location and quantity of cutting location points selection are lack of basis. The cutting contact points and cutting location points are analyzed using this method. The experiment of slow tool servo for sine?wave surface was carried out. The results show that the proposed tool path generation method has the characteristics of predicting machining surface accuracy and significantly reducing the number of cutting location points.

Key words: machine tool, ultra?precision machining, slow tool servo(STS), optical freeform surface, tool path generation

CLC Number: 

  • TH161

Fig.1

Schematic diagram for diamond turning with STS"

Fig.2

Principle of tool path generation for STS"

Fig.3

Linearization error in cutting direction"

Fig.4

Scallop?height in feedrate direction"

Fig.4

"

Fig.6

Tool nose radius compensation"

Fig.7

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Fig.8

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Fig.9

Slow tool servo system configuration for cutting experiments"

Fig.10

Cutting quality measurement"

Fig.11

Actual PV data of finish surface"

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