Appear this kind of traces of grinding wheel are the main reasons why the bus flat ZhiXing poor, bump phenomenon existing in grinding, grinding wheel with workpiece is only part of the contact, when the workpiece or several times after grinding wheel-forth movement, the performance can be recreated cross helical and the naked eye can be observed. These helical pitch and workpiece, the machine speed speed about size, and at the same time, and the grinding wheel axis line and table guide not parallel relevant.

 

(1) the main reason for the spiral form

 

1. The grinding wheel dressing bad, not chamfering edge horn, don't use the cooling fluid overhauled;

 

2. The workbench guide too much oil, the workbench floating;

 

3. Machine precision is bad;

 

4. Grinding pressure, etc.

 

(2) of the formation of the spiral line with reason

 

1. V guide rigid bad, when grinding wheel produce offset, just grinding wheel edges and working surface contact;

 

2. Trim noisy round table the reversing speed when unstable, the accuracy is not high, make the grinding wheel a slightly less edge trim;

 

3. Workpiece itself rigid poor;

 

4. A broken wheel is too high and grinding workpiece spalling of scrap iron deposition in the grinding wheel attached on the surface, this should trim good grinding wheel with cooling water flushing or scrub clean;

 
5. The grinding wheel dressing is bad, have local convex, etc.



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