xiehe model

In CNC processing plants, common methods include mirror grinding. But many people don’t know what mirror grinding is. So, Xiehe Processing Factory will briefly introduce what mirror grinding is.

Balancing and Dressing Grinding Wheels:

(1) Balance grinding wheel. After the grinding wheel is mounted on the flange, rough static balancing is performed first, then it is mounted on the grinding wheel shaft and the two end faces and outer circle are trimmed, and finally precise static balancing is performed.

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

When dressing the grinding wheel, you should pay attention to the following matters:

1) The usual fine grinding allowance is 0.015~0.02mm. When the workpiece is rough ground to Ra0.8, a fine grinding allowance of 0.005~0.015mm is left (the remaining grinding allowance must be determined based on the properties and hardness of the steel. For steel materials with high hardness and easy polishing, appropriate and minimal grinding allowance should be left), and the grinding wheel needs to be finely dressed.

2) When finishing the grinding wheel, first remove the thickness of about 0.1mm, then trim it twice with a depth of cut of 0.02mm, then trim it three times with a depth of cut of 0.01mm, and finally reciprocate twice with no depth of cut. During finishing, the transverse feed speed is 20~30mm/min. For mild steel workpieces, it is better to slow down the transverse feed when grinding the grinding wheel, but the opposite is true when processing hard-quenched high-speed steel.

3) While dressing the grinding wheel, it is necessary to use sufficient grinding fluid or other coolant to flush the contact point between the grinding wheel and the diamond knife to wash away the grinding wheel debris 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 diamond tip diameter can be within 0.8mm. When trimming with a sharp diamond knife, the cross feed speed must be slowed down.

5) When the newly dressed grinding wheel is started to be used, the surface roughness will be slightly worse, and it will stabilize after a moment of use.

The above content is part of the mirror grinding, I hope it will be helpful to everyone. If you want to know more about mirror grinding, please call Xiehe Processing Factory and we will do our best to answer your questions one by one.