xiehe model

In cnc processing plants, the common method is mirror grinding. But many people don't know what mirror grinding is, so, next, the cnc processing factory will briefly introduce what mirror grinding is.

Balancing and Dressing Grinding Wheels:

(1) Balance the grinding wheel. After the grinding wheel is installed on the flange, rough static balance is performed first, and then it is installed on the grinding wheel shaft to trim the two end faces and the outer circle, and then the precise static balance is performed.

(2) Dressing the grinding wheel. Whether the grinding wheel is dressed well or not directly affects the brightness of the grinding surface. In order to reduce the surface roughness value, dressing the grinding wheel is the key.

Pay attention to the following items when dressing the grinding wheel:

1) The usual fine grinding allowance is 0.015~0.02mm. When the workpiece is roughly ground to Ra0.8, leave a fine grinding allowance of 0.005~0.015mm (the grinding allowance must be determined according to the nature and hardness of the steel. For steel with high hardness and easy to polish, the grinding allowance should be appropriately reduced), and the grinding wheel needs to be fine-tuned.

2) When fine-tuning the grinding wheel, first remove a thickness of about 0.1mm, then dress twice with a depth of cut of 0.02mm, and then dress three times with a depth of cut of 0.01mm, and finally reciprocate twice with no depth of cut. The lateral feed speed during finishing is 20~30mm/min. For mild steel workpieces, it is better to feed slowly when grinding the grinding wheel, and the opposite is true when processing hardened high-speed steel.

3) While dressing the grinding wheel, it is necessary to flush the contact point between the grinding wheel and the diamond knife with sufficient grinding fluid or other coolant to wash away the debris of the grinding wheel in time to avoid affecting the grinding quality.

4) The diamond knife used for finishing does not need to be very sharp, because the grain size of the grinding wheel is relatively coarse. The diameter of the diamond tip can be within 0.8mm. When trimming with a sharp diamond knife, the infeed speed must be slowed down.

5) When the newly dressed grinding wheel starts to be used, the surface roughness is slightly worse, and it will stabilize after being used.

The above content is the content of mirror grinding, I hope it will be helpful to everyone.