Grinding of guide parts often requires strict control of its profile and roughness. Whether in car pulleys or in complex bearings such as double guide ball bearings, the clearance accuracy and matching rate of the final product often directly affect the customer’s Production and user experience. However, it is clear in the industry that after the grinding wheel is manufactured, it is necessary to perform dressing to grind the workpiece to ensure the accuracy of the workpiece. Previously, the two most commonly used grinding wheel dressing methods-roller dressing and turning dressing were introduced. . I believe that friends who have known it will understand that compared with turning method, roller dressing has higher precision and efficiency and longer service life. Therefore, it is often used as one of the preferred dressing methods for superhard grinding wheels for grinding precision parts.
1.Case
Matter | The accuracy is can’t to achieve of bearing guide |
workpiece | Double guide ball bearing |
Grinding method | Form grinding |
Dressing tool | Single point diamond dresser |
Require | Contour (+-0.003mm) Ra ＜0.4 |
2, In order to solve the customer's on-site problems, meet the requirements of profile, processing efficiency, life and other requirements, combined with the on-site investigation and analysis results, it was decided to change the original dressing tool-the diamond pen, to the diamond roller as the online dressing plan. First, use a diamond roller with the same shape as the guide of the bearing inner ring to dress the grinding wheel, and then use the dressing wheel to grind the workpiece to efficiently meet the target profile standard and roughness requirements.
3, According to the customer's requirements for grinding and roughness, we conduct dressing tests on the grinding wheel with a smaller dressing speed ratio and feed rate:
Dressing parameters | Dressing tool | Diamond rotary dresser |
Speed of dresser | 15-20m/s | |
Speed of wheel | 60m/s | |
Feed | 0.003mm per feed |
4, The test results are as follows:
Item | Measurements | Result |
Left Top | 0.0022mm | PASS |
Left Bottom | -0.0027mm | PASS |
Right Top | 0.0029mm | PASS |
Right Bottom | -0.2226mm | PASS |
Ra require | 0.317um | PASS |
Test all indicators to meet customer requirements. The diamond roller dressing solution perfectly solves the problem of low cost and high yield of the customer's original single point diamond dressing solution.
Semiconductor Industry Solutions
PCD & PCBN Tools Grinding Industry
Diamond Cutting Bruting Polishing
Add: No.171 Zhongyuan Rd, Zhongyuan District, Zhengzhou, 450001, Henan, China
Tel: +86-371-86545906
Phone / Whats App: +86 18339903057
E-mail: [email protected]
