Guarantee of crankshaft machining grinding quality:
The use of segmented grinding greatly improves work efficiency:
(1) Common grinding methods Cylindrical grinding is the most common grinding method. The grinding principle is to adopt the radial constant speed feed mode. After the rough machining is finished, the different cutting amount is switched according to the machining allowance fed back by the probe, until the probe feedback processing is finished, the light is repaired and rounded, and FIG. 3 is The conventional feed method used by the Landis LT-94357 double-grinding crankshaft connecting rod grinding machine.

Each machining stage gives a specific amount of cutting. The X-axis and C-axis (part rotation axis) movements of the entire machining process are independently performed at a specified speed.

(2) Segmented grinding method The so-called segmented grinding method is to remove the fixed margin of the grinding wheel per revolution of the part. The movement of the X-axis and the C-axis is related to each other. The amount is large, and the speed of removing the margin is more than twice that of the constant speed feed. The following is an example of the use of segmented feed for the grinding machine:

The rough grinding spindle neck processing method is that the center bracket is not used. In this step, the part is removed by 0.7mm in the first week, and 0.08mm finishing allowance is left after rough machining.

It can be seen that the maximum removal margin of the roughing of the segmented processing method is 0.7mm. Such a large margin is difficult to achieve with the traditional alumina grinding wheel, so this method is greatly improved on the basis of the CBN material grinding wheel. Processing efficiency. In the future, the CBN grinding wheel segment grinding method has a tendency to replace the roughing of turning.