scholarly journals Machining Error Reduction by a Negative Compliance Device. An Application to a Face Grinding Machine.

1999 ◽  
Vol 65 (7) ◽  
pp. 1041-1045
Author(s):  
Kiyoshi MATSUMOTO ◽  
Yotaro HATAMURA ◽  
Masayuki NAKAO
Keyword(s):  
Error Reduction ◽  
Machining Error ◽  
Grinding Machine ◽  
Face Grinding

Machining error reduction by combining of feed-speed optimization and toolpath modification in high-speed machining for parts with rapidly varied geometric features

2017 ◽  
Vol 232 (4) ◽  
pp. 557-571
Author(s):  
Jian-wei Ma ◽  
Zhen-yuan Jia ◽  
De-ning Song ◽  
Fu-ji Wang ◽  
Li-kun Si
Keyword(s):  
Machine Tool ◽  
High Speed ◽  
Error Reduction ◽  
Feed Speed ◽  
Geometric Features ◽  
High Speed Machining ◽  
Machining Error ◽  
Nc Machine Tool ◽  
Speed Optimization ◽  
Nc Machine

Parts with rapidly varied geometric features are usually crucial parts in high-end equipment and widely applied in the fields of aerospace, energy and power, which are difficult or inefficient to process because of the more special structure and the higher requirement of machining precision. High-speed machining technology provides an effective method for parts with rapidly varied geometric features to solve the contradiction between high demand and low machining efficiency. However, as the existence of rapidly varied geometric features, the machining toolpath for such parts is always complex free-form curve and the actual moving speed of the workbench of the NC machine tool cannot reach the feed-speed set in the NC program timely due to the drive constraint of NC machine tool. Furthermore, the machine tool would vibrate violently when machining the rapidly varied geometric features. In this way, the big machining error will be formed. A machining error reduction method by combining of feed-speed optimization and toolpath modification in high-speed machining for such parts is proposed. First, considering that the actual feed-speed cannot reach the programmed value when the toolpath curvature is too large, the feed-speed is optimized with the constraints of jerk and acceleration limitations of the feed shafts, and a feed-rate smoothing algorithm is applied. Then, the compensated cutter locations are calculated via machining-error estimation. Finally, the modified NC codes are acquired according to the optimized feed-speed and the compensated toolpath. By combining the feed-speed optimization and toolpath modification, the high precision and high efficiency machining can be realized. The experimental results demonstrate the feasibility of the proposed approach. This study provides an effective approach to reduce the machining error in high-speed machining, and is significant for improving the processing precision and efficiency of parts with rapidly varied geometric features.

A Systematic Model of Machining Error Reduction in Robotic Grinding

2020 ◽  
Vol 25 (6) ◽  
pp. 2961-2972
Author(s):  
He Xie ◽  
Wen-long Li ◽  
Da-Hu Zhu ◽  
Zhou-ping Yin ◽  
Han Ding
Keyword(s):  
Error Reduction ◽  
Machining Error ◽  
Robotic Grinding

scholarly journals EXPERIMENTAL INVESTIGATION OF THE TEMPERATURE AND ACCURACY CHARACTERISTICS OF DOUBLE-SIDED FACE GRINDING MACHINE

2019 ◽  
pp. 112-120
Author(s):  
И. Никитина ◽  
I. Nikitina ◽  
А. Поляков ◽  
A. Polyakov
Keyword(s):  
Angular Position ◽  
Experimental Studies ◽  
Fine Tuning ◽  
Grinding Process ◽  
Industrial Batch ◽  
Close Proximity ◽  
Characteristic Points ◽  
Grinding Machine ◽  
Processing Errors ◽  
Face Grinding

The paper proposes a methodology for experimental studies of double-sided face grinding machines on the criterion of heat resistance, including: method of simulating a grinding process; measurement of temperature; measurement of changes in relative angular position of the circles; the measurement of processing errors. The proposed methods for experimental studies of the thermal behavior and errors in the machining of a double-sided face grinder allow for fine-tuning of the machine under production conditions. At the same time, preliminary tests of a double-sided face grinder show that when grinding an industrial batch of cylindrical rollers, excessive temperatures are distributed unevenly across the machine nodes both at idle and during grinding. The ends of the spindle heads and the stand have the greatest excess temperature when working at idle, and when grinding - on the surface of the machine, located in close proximity to the grinding zone. The nature of changes in excess temperatures of characteristic points and coolant when simulating the grinding process on the machine completely coincided with the experimental data obtained on a working machine.

Development of an Intelligent Face Grinding Machine to Fabricate Ultraflat Surfaces on Thin, Brittle Substrates

CIRP Annals ◽  
1996 ◽  
Vol 45 (1) ◽  
pp. 397-400 ◽  
Author(s):  
Masayuki Nakao ◽  
Yotaro Hatamura
Keyword(s):  
Grinding Machine ◽  
Face Grinding

An Advanced Ultraprecision Face Grinding Machine

2002 ◽  
Vol 20 (9) ◽  
pp. 639-648 ◽  
Author(s):  
J. Corbett ◽  
P. Morantz ◽  
D. J. Stephenson ◽  
R. F. Read
Keyword(s):  
Grinding Machine ◽  
Face Grinding
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