scholarly journals Development of High Precision and Strength Sintered Ferrous Alloy Gear by Rolling-1st Report-Numerical Tooth Profile Analysis in Finish P/M Gear Rolling Process Using Screw-Shaped Tool

2009 ◽  
Vol 56 (6) ◽  
pp. 330-335 ◽  
Author(s):  
Teruie Takemasu ◽  
Hideshi Miura ◽  
Kosuke Komoto
Keyword(s):  
High Precision ◽  
Profile Analysis ◽  
Rolling Process ◽  
Tooth Profile ◽  
Ferrous Alloy ◽  
Gear Rolling

Study on Tooth Profile Errors of Flexible Wheel Cold Rolling Machining

2012 ◽  
Vol 229-231 ◽  
pp. 2463-2466
Author(s):  
Xiang Hong Yang ◽  
Shu Zhong Lin
Keyword(s):  
Cold Rolling ◽  
Rolling Process ◽  
Tooth Profile ◽  
Contact Points ◽  
Optimization Of Process Parameters ◽  
Rolling Quality ◽  
Rolling Wheel ◽  
Profile Errors ◽  
Tooth Profile Errors ◽  
Gear Rolling

The harmonic gear cold rolling process is an effective method to solve mass production. However, tooth profile quality problems greatly hinder the development of the process. Based on engagement theory, the dynamic characteristics of the rolling process and flexible wheel rolling tooth profile errors caused by the changes of the number of contact points were analyzed and studied, and the process methods were put forward to eliminate or reduce tooth profile errors in this paper, which has an important significance in analysis of rolling tooth profile errors, modification shape of the rolling wheel, optimization of process parameters and improvement of gear rolling quality.

The Research on Tooth Profile Total Deviation Measuring Method Based on Coordination Measuring Machine

2012 ◽  
Vol 184-185 ◽  
pp. 789-792
Author(s):  
Bing Li ◽  
Yu Lan Wei ◽  
Meng Dan Jin ◽  
Ying Ying Fan
Keyword(s):  
Mathematical Model ◽  
Data Processing ◽  
High Precision ◽  
Gear Tooth ◽  
Measuring Method ◽  
Tooth Profile ◽  
Cylindrical Gears ◽  
Total Deviation ◽  
Measuring Machine

Put forward a method that use scatter points which got in different places to measure the involution cylindrical gears, give a mathematical model that use the discrete points to sure the total deviation of gear tooth profile. The experience results show that this way is of high precision in measurement points, measurement an error data processing less intervention, etc.

Analytical Study on Tooth Profile of Non-Circular Gear Based on Hobbing Process Simulation

2019 ◽  
Author(s):  
Jiang Han ◽  
Dazhu Li ◽  
Lian Xia ◽  
Xiaoqing Tian
Keyword(s):  
Process Simulation ◽  
Analytical Study ◽  
Profile Analysis ◽  
Tooth Profile ◽  
Feature Points ◽  
Analysis Method ◽  
High Convergence Rate ◽  
Envelope Method ◽  
Profile Accuracy ◽  
Uniform Accuracy

Abstract Based on the hobbing process simulation of non-circular gears, a method for obtaining the precise tooth profile and evaluating the undercutting characteristics according to the profile generated after the finite number of envelop is proposed. The profile points formed by different hobbing strategies are compared, then the envelope method with uniform accuracy for all teeth is selected. The formation rule of tooth profile morphology is analyzed, and the pickup method with high convergence rate is proposed. The influences of the envelope number and gear parameters on the tooth profile accuracy are analyzed inductively, and the reasonable number of envelopes for expected accuracy is given. The results show that the tooth profile analysis method based on the hobbing process simulation can accurately acquire all feature points of the tooth profile and analysis the undercutting phenomenon.

Process Planning of Gear Rolling with the Finite Element Method

2014 ◽  
Vol 622-623 ◽  
pp. 986-992 ◽  
Author(s):  
Alireza Khodaee ◽  
Arne Melander
Keyword(s):  
Gear Wheel ◽  
Rolling Process ◽  
Load Level ◽  
Axial Loads ◽  
Fe Method ◽  
Plastic Deformation Process ◽  
Gear Manufacturing ◽  
Rolling Method ◽  
Gear Wheels ◽  
Gear Rolling

Gear rolling is a new gear manufacturing process which can partly replace traditional gear milling processes. High gear wheels with modules of 4mm up to 6mm are of interest to truck manufacturing. The process is of interest since it involves no material removal and since it has the potential to give good performance of the gear wheels. The process must be adopted for the large plastic deformations which occur for gear rolling with large modules. In this paper special emphasis will be put to loads and torques during the gear rolling process of gear wheels with large modulus. The FE method will be used to model the plastic deformation process to fully form a gear wheel with the gear rolling method. The radial and axial loads and the torques in this process are predicted. The loads of the process are high compared to the situation for small gear wheels so simulation of load level is essential for the design of rolling machines for high gears.

scholarly journals The Design and Implementation of a High-Precision Positioner Fixture

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1227
Author(s):  
Xuesen Zhao ◽  
Rongkai Tan ◽  
Zhe Wang ◽  
Xicong Zou ◽  
Zhenjiang Hu ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
High Precision ◽  
Tooth Profile ◽  
Alignment Error ◽  
Test Results ◽  
Positioning Accuracy ◽  
Design And Implementation ◽  
Cumulative Error ◽  
Half Angle ◽  
Calculation Results

In this paper, a novel positioner fixture with a high repeated positioning accuracy and a high stiffness is proposed and investigated. A high-precision end-toothed disc is used to achieve the high repeated positioning accuracy of the designed positioner fixture. The mathematical models of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are analyzed. The allowable tolerance values of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are given. According to the theoretical calculation results, a prototype positioner fixture is fabricated and its repeated positioning accuracy and stiffness are tested. The test results indicate that the stiffness of the proposed positioner fixture is 1050.5 N/μm, which is larger than the previous positioner fixtures of the same type. The repeated positioning accuracy of the proposed positioner fixture in the x, y and z directions are ± 0.48 μm, ± 0.45 μm and ± 0.49 μm, respectively, which is significantly higher than the previous positioner fixtures.

The Test Research of High Precision FA45-29 Type Prototype

2013 ◽  
Vol 694-697 ◽  
pp. 487-491
Author(s):  
Tian Min Guan ◽  
Liang Xuan ◽  
Lei Lei ◽  
Chang Xiu Lv
Keyword(s):  
High Precision ◽  
Transmission Efficiency ◽  
Tooth Profile ◽  
Profile Modification ◽  
Performance Requirements ◽  
Transmission Chain ◽  
Tooth Profile Modification

In order to verify the accuracy of cycloid tooth profile modification parameters, the experiment scheme for transmission efficiency, vibration and noise has been designed in this article, which according to the performance requirements of high-precision FA45-29 pin-cycloid drive reducer. And the connecting parts of the transmission chain used in the experiments such as experimental frame have also been designed according to the dimensions of this model. And then, we complete the measurement experiments of comprehensive experimental.

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