A modified ball screw lapping method and optimized lapping factors for ideal surface quality
| Autor: | Leilei Zhao, Hutian Feng, Jun Jin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Fluid Flow and Transfer Processes
0209 industrial biotechnology Materials science Mechanical Engineering Abrasive Mechanical engineering Rotational speed 02 engineering and technology Ball screw Industrial and Manufacturing Engineering 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Lapping Mechanics of Materials Control and Systems Engineering Residual stress lcsh:TA401-492 Ball (bearing) Surface roughness lcsh:Materials of engineering and construction. Mechanics of materials Friction torque Civil and Structural Engineering |
| Zdroj: | Mechanical Sciences, Vol 9, Pp 221-230 (2018) |
| ISSN: | 2191-916X |
| DOI: | 10.5194/ms-9-221-2018 |
| Popis: | In order to meet the high precision requirement in various mechanical applications, ball screws are being lapped as a finishing process to improve the travel variation and surface quality. However, the existing manufacturing method is labor intensive. It depends on an operator's skill and experience and is very complex, time consuming with low production efficiency. The aim of this study is finding a modified lapping method to improve the lapping effect, increase efficiency and change the present labor-intensive situation. In addition, the effects of main lapping factors on the surface quality of a ball screw will be investigated, such as friction torque, rotational speed, abrasive particulate size and lapping time. A new lapping tool was installed on a specially designed friction torque test machine, which can control the rotation of a screw and monitor the friction torque applied on the screw dynamically. A set of orthogonal experiments were conducted on the test machine and the travel variation, surface roughness and residual stress of tested screws were measured after lapping. The measurement results of these three parameters were used to evaluate the lapping effect. Compared with the conventional lapping method, the lapping time of the present method was remarkably shorter, with only tens of minutes to get a good lapping result. |
| Databáze: | OpenAIRE |
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