Design and control of a fast tool servo used in noncircular piston turning process

2013 ◽  
Vol 36 (1) ◽  
pp. 87-94 ◽  
Author(s):  
Haifeng Wang ◽  
Shuyan Yang
2017 ◽  
Vol 94 (9-12) ◽  
pp. 3503-3517 ◽  
Author(s):  
Hui Tang ◽  
Hongcheng Li ◽  
Suet To ◽  
Kai-Ming Yu ◽  
Yunbo He ◽  
...  
Keyword(s):  

2020 ◽  
Vol 67 (8) ◽  
pp. 6688-6697 ◽  
Author(s):  
Zhiwei Zhu ◽  
Li Chen ◽  
Peng Huang ◽  
Lars Schonemann ◽  
Oltmann Riemer ◽  
...  

2015 ◽  
Vol 6 (1) ◽  
pp. 47-60 ◽  
Author(s):  
Mohammad Zadshakoyan ◽  
Vahid Pourmostaghimi

Tool wear prediction plays an important role in industry automation for higher productivity and acceptable product quality. Therefore, in order to increase the productivity of turning process, various researches have been made recently for tool wear estimation and classification in turning process. Chip form is one of the most important factors commonly considered in evaluating the performance of machining process. On account of the effect of the progressive tool wear on the shape and geometrical features of produced chip, it is possible to predict some measurable machining outputs such as crater wear. According to experimentally performed researches, cutting speed and cutting time are two extremely effective parameters which contribute to the development of the crater wear on the tool rake face. As a result, these parameters will change the chip radius and geometry. This paper presents the development of the genetic equation for the tool wear using occurred changes in chip radius in turning process. The development of the equation combines different methods and technologies like evolutionary methods, manufacturing technology, measuring and control technology with the adequate hardware and software support. The results obtained from genetic equation and experiments showed that obtained genetic equations are correlated well with the experimental data. Furthermore, it can be used for tool wear estimation during cutting process and because of its parametric form, genetic equation enables us to analyze the effect of input parameters on the crater wear parameters.


Author(s):  
Jason T. Wilson ◽  
Chi-Ying Lin ◽  
Tsu-Chin Tsao

This paper presents the mechanical and servo control design of a fast tool servo for machining noncircular bores. The rotating boring bar varies the depth of cut dynamically to machine noncircular bores, such as those in engine piston gudgeon pin holes. The piezoelectric actuator driven fast tool servo has 60 micron displacement and about 400 Hz first natural frequency. The design of robust repetitive control of the fast tool servo is discussed and experimental results of cutting tool motion for generating oval bore profiles are presented.


2016 ◽  
Vol 679 ◽  
pp. 73-78
Author(s):  
Fu Jing Tian ◽  
Zi Qiang Yin ◽  
Sheng Yi Li

Optical free-form surfaces are becoming more and more popular in the industry application, which can be fabricated by diamond turning based on fast tool servo (FTS). It is an efficient, precise and low-cost processing method. In order to use diamond turning to fabricate the freeform optics, this paper develops a novel long range fast tool servo which is actuated by voice coil motor. The total range can reach up to 30 mm. The important parts of the FTS have been simulated and analyzed. The transfer function model identification of the FTS has been accomplished. Since the desired tool trajectories are approximately periodic signals in freeform surfaces turning, and the adaptive feedforward cancellation (AFC) control can achieve perfect tracking and disturbance rejection of periodic signals, the AFC control is designed to be added on the IMC-PID controller.


Sign in / Sign up

Export Citation Format

Share Document