scholarly journals Design Method for Profile of Screw Rotor Hob in Consideration of Interference. 2nd Report. Method to Obtain Profile of Relief Grinding Wheel Surface for Hob which Cuts a Given Screw Rotor Surface.

1997 ◽  
Vol 63 (609) ◽  
pp. 1753-1759
Author(s):  
Yoshitaroh YOSHIDA ◽  
Muneharu MOROZUMI ◽  
Satoshi KISHI ◽  
Tomio HORIUCHI ◽  
Masayuki SAITOH
Keyword(s):  
Design Method ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Rotor Surface ◽  
Screw Rotor

scholarly journals A Novel Optimization Design Method of Form Grinding Wheel for Screw Rotor

2019 ◽  
Vol 9 (23) ◽  
pp. 5079 ◽  
Author(s):  
Zongmin Liu ◽  
Qian Tang ◽  
Ning Liu ◽  
Pinghua Liang ◽  
Wei Liu
Keyword(s):  
Optimization Design ◽  
Design Method ◽  
Empirical Method ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Grinding Performance ◽  
Form Grinding ◽  
Screw Rotor ◽  
Screw Rotors ◽  
Profile Accuracy

The profile accuracy of screw rotors plays a vital role in stabilizing the meshing operation between mated rotors. Such stability can minimize the vibration and noise, as well as improve the sealing performance and wear resistance. This is the main reason why form grinding is extensively applied as a finishing process to maintain high screw rotor profile accuracy. Since the installation parameters for form grinding wheels affect both the grinding wheel profile accuracy and grinding performance, it is essential to obtain reasonable installation parameters to guarantee the high precision and good grinding performance of form grinding wheels. In this paper, a novel optimization design method for form grinding wheels for screw rotors has been proposed. For the first time, the relationship between the grinding wheel installation parameters and profile accuracy is established to evaluate the grinding performance. A parameterized program has been designed based on space engagement theory. The characteristics of the contact line and profile features of form grinding wheels under different installation parameters have been investigated. Then, the proposed method was employed to select the correct range of installation parameters. To validate the proposed method, a set of experiments, including the manufacture and measurement of several screw rotors, was carried out. The results reveal that the precision of the screw profile is significantly improved compared with the empirical method, thus showing the effectiveness of the proposed method.

Research on Calculation and Smoothing of Grinding Wheel Profile for Machining Screw Rotor

2011 ◽  
Vol 291-294 ◽  
pp. 2383-2387 ◽  
Author(s):  
Zhi Huang Shen ◽  
Ru Sheng Lu ◽  
Zhe Shan Zhang ◽  
Bin Yao
Keyword(s):  
Numerical Analysis ◽  
3D Model ◽  
Design Method ◽  
Grinding Wheel ◽  
Point Selection ◽  
Complex Curves ◽  
Virtual Test ◽  
Helical Groove ◽  
Wheel Profile ◽  
Screw Rotor

Upon studying the form grinding principle of helical groove and the conjugate movement between the grinding wheel and screw rotor, the equation of their contact line is firstly derived. The problem of smoothing the profile of grinding wheel is then solved by using the point selection smoothing method which is concludes from the theory of complex curves and numerical analysis. Finally, with the help of computer, the simulation processing is done with the final result shows that this design method is reliable. It can not only reduce the time for design and the number of trial samples but also provides a 3D model which can be used in virtual test of screw rotor.

scholarly journals A Study of Relief Grinding Method for Screw Rotor Hob with Pencil Type Wheel. 1st Report. Profile Design Method of Pencil Type Grinding Wheel.

2001 ◽  
Vol 67 (658) ◽  
pp. 2006-2013
Author(s):  
Tomio HORIUCHI ◽  
Satoshi KISHI ◽  
Muneharu MOROZUMI ◽  
Yoshitaroh YOSHIDA ◽  
Masayuki SAITOH
Keyword(s):  
Design Method ◽  
Grinding Wheel ◽  
Grinding Method ◽  
Screw Rotor ◽  
Profile Design

Computer-Aided Simulation of Dressing Using Diamond Rotary Dresser and Visualization of Dressing Process

2014 ◽  
Vol 1017 ◽  
pp. 592-597 ◽  
Author(s):  
Akihiko Kubo ◽  
A.M.M. Sharif Ullah ◽  
Jun’ichi Tamaki
Keyword(s):  
Solid Body ◽  
Surface Profile ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Contour Map ◽  
Removal Process ◽  
Computer Aided ◽  
Actual Depth

The surface of a grinding wheel dressed by a diamond rotary dresser was generated by computer-aided simulation for the case of multipass dressing on the assumption that the grinding wheel is a homogeneous solid body and the dressing trajectories of the diamond grits are perfectly copied on the grinding wheel surface. The dressing process was visualized as a contour map of the dressed surface profile and the effects of the dressing strategy, i.e., down-cut dressing or up-cut dressing, on the grinding wheel removal process were investigated. It was found that the diamond grits remain the residual depth of cut on the surface of the grinding wheel, resulting in an actual depth of cut larger than that given by the rotary dresser.

Dimensional Characterization of Grinding Wheel Surface through Acoustic Emission

CIRP Annals ◽  
1994 ◽  
Vol 43 (1) ◽  
pp. 291-294 ◽  
Author(s):  
Joäo F. Gomes de Oliveira ◽  
David A. Dornfeld
Keyword(s):  
Acoustic Emission ◽  
Grinding Wheel ◽  
Wheel Surface

Characteristics of the Wheel Surface Topography in Ultra-precision Grinding of Silicon Wafers

2008 ◽  
Vol 389-390 ◽  
pp. 36-41
Author(s):  
Feng Wei Huo ◽  
Dong Ming Guo ◽  
Ren Ke Kang ◽  
Zhu Ji Jin
Keyword(s):  
Surface Topography ◽  
Sampling Interval ◽  
Grinding Wheel ◽  
Height Distribution ◽  
Wheel Surface ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Cutting Surface ◽  
Ultra Precision ◽  
Cutting Direction

A 3D profiler based on scanning white light interferometry with a lateral sampling interval of 0.11μm was introduced to measure the surface topography of a #3000 diamond grinding wheel, and a large sampling area could be achieved by its stitching capability without compromising its lateral or vertical resolution. The protrusion height distribution of diamond grains and the static effective grain density of the grinding wheel were derived, and the wheel chatter and the deformation of the wheel were analyzed as well. The study shows that the grain protrusion height obeys an approximate normal distribution, the static effective grain density is much lower than the theoretical density, and only a small number of diamond grains are effective in the grinding process with fine diamond grinding wheel. There exists waviness on the grinding wheel surface parallel with the wheel cutting direction. The cutting surface of the grinding wheel is not flat but umbilicate, which indicates that the elastic deformation at the wheel edges is much larger than in the center region.

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