Research on the Cutting Force Induced Error Measurement Method of the CNC Machine Tools

2012 ◽  
Vol 220-223 ◽  
pp. 426-430
Author(s):  
Huan Lao Liu ◽  
Bao Yue Chen ◽  
Feng Liu ◽  
Guang Yu Tan
Keyword(s):  
Cutting Force ◽  
Machine Tools ◽  
Measurement Method ◽  
One Dimension ◽  
Cnc Machine Tools ◽  
Error Measurement ◽  
Cnc Machine ◽  
Working Process ◽  
Machine Error ◽  
Hard Cutting

The cutting force induced error has been more important as the hard cutting and hard cutting material used. This paper proposed the direct measurement method of cutting force induced error, which realized the corresponding directly of the cutting force and the value of error in the working process. According to the discrimination of machine error characteristics reflected by the different measuring methods, it puts forward to building the mixed error model based on the measuring technology of one dimension and two dimension. The results could provides the test data and theoretical basis for the mechanism of the processing performance affected by the dynamic behavior of machine tools.

Volumetric Positioning Errors of CNC Machining Tools and Laser Sequential Step Diagonal Measurement

2006 ◽  
Vol 315-316 ◽  
pp. 98-102 ◽  
Author(s):  
J.H. Shen ◽  
H.T. Zhang ◽  
Hong Tao Cao ◽  
Jian Guo Yang ◽  
C. Wang
Keyword(s):  
Machine Tools ◽  
Measurement Method ◽  
Measurement Data ◽  
Cnc Machining ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Transformation Matrices ◽  
Positioning Errors ◽  
Analysis Measurement ◽  
Key Factor

The volumetric positioning precision of CNC machine tools is the key factor to get high machining precision, so the analysis, measurement and compensation of the volumetric error is becoming more and more important. In this paper, the modeling results of 3-axes CNC machine tools with four different configurations are given based on rigid body theory and homogeneous coordination transformation matrices. An improved sequential step diagonal measurement method is proposed and analyzed because the current laser measurement methods are complex and time cost. At the final section of the paper, the measurement data was applied into the error compensation and the sequential step diagonal measurement method was validated efficient and convenient.

Research on Returning Reference Point of CNC Machine with FANUC-31I

2015 ◽  
Vol 713-715 ◽  
pp. 191-194
Author(s):  
Jiang Liu ◽  
Li Xun Lai
Keyword(s):  
Reference Point ◽  
Machine Tools ◽  
Reference Points ◽  
Cnc Machine Tools ◽  
Coordinate Systems ◽  
Cnc Machine ◽  
Design Requirement ◽  
Working Process ◽  
Absolute Encoder ◽  
Incremental Encoder

CNC machine tools tend to build their coordinate systems according to the categories of returning reference points. Due to their detecting structures and principles, four distinct styles of reference point returning come into being, that is, Reference Point Establishment based on Incremental Encoder and Mechanical Block, Datum-point style Returning Reference point, Reference Point Returning with Incremental Encoder and no Mechanical Block, Percussion Reference Point Returning based on Absolute Encoder. In this paper, the author tries to probe into the basic requirement, working process and design requirement of the four styles.

Research on Ultrasonic-Assisted CNC Cutting of Honeycomb Cores Based on UG

2021 ◽  
Author(s):  
Dongfang Mu ◽  
Xiaoping Hu ◽  
Haofeng Yu ◽  
Baohua Yu
Keyword(s):  
Cutting Force ◽  
Process Planning ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Ultrasonic Machining ◽  
Post Processing ◽  
Cnc Machine ◽  
Good Surface ◽  
Ultrasonic Assisted ◽  
Honeycomb Cores

Abstract Compared with traditional milling, ultrasonic-assisted cutting of honeycomb cores has the advantages of good surface quality and low cutting force. Because the ultrasonic cutter and chip shapes used in ultrasonic machining are significantly different from traditional machining methods. This study is based on UG CAM for process planning, which will be converted into codes that can be recognized by six-axis CNC machine tools through post-processing, and verify the feasibility through VERICUT simulation.

Loading of the Manufacturing Systems Elements in the Process of Unsteady Mode Cutting and the Models of their Arrangement Deviations

2014 ◽  
Vol 682 ◽  
pp. 192-195 ◽  
Author(s):  
U.S. Putilova ◽  
Yu.I. Nekrasov ◽  
A.A. Lasukov
Keyword(s):  
Cutting Force ◽  
Machine Tools ◽  
Manufacturing Systems ◽  
Diagnostic System ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Cutting Force Components ◽  
On Line ◽  
Servo Drives ◽  
Force Components

To improve the treatment accuracy by on-line correction of the paths of the executive working parts (EWP) the authors study the processes of loading, deformation and arrangement deviation of the elements of the manufacturing systems (MS) under the changes of the cutting force components in the process of turning on machine-tools equipped with CNC systems of PCNC class. Estimation of the values of the technological components of the cutting force Px, Py, Pz is based on the phenomenon of arrangement deviation Δωi of the elements monitoring the servo drives of machine tools. To determine the compliance of the deviation magnitude Δwi with the technological components of the cutting force Px, Py a diagnostic subsystem was developed, involving the loading devices and dynamometric equipment. The diagnostic system is controlled through PCNC with the application of a specially developed hardware-software system. The data on changes in the values Px, Py and the respective changes in the attitude misalignment parameters in servo drives at various EWP minute feeds in CNC machine tools were determined by prior diagnosis of load characteristics servo drives, registered in the PCNC. So, the data of cutting force components Px, Py compliance with arrangement error ratios ΔωXп, ΔωZп. were established.

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