Liner taking out method from blind hole

Abstract

The invention discloses a method for taking a lining out of a blind hole, belongs to the mechanical assembly technology, and relates to a method for taking a lining out of a blind hole on a workpiece. The invention is characterized in that the method for taking the lining out of the blind hole comprises the following steps: firstly, grease in the liquid state, the semi-liquid state or the solid state is injected into the inner hole of the lining, and the injection amount is 30%-60% of the depth of the blind hole; then a straight pin shaft with the diameter being 0.02-0.03mm larger than the inside diameter is driven into the inner hole of the lining in a knocking manner until the lining is separated from the blind hole. The method can take the lining to be repaired out of the blind hole of the workpiece without breaking the lining underport on the workpiece, thereby avoiding re-machining the lining underport on the workpiece, shortening the repair time of the workpiece, and improving the labor productivity.

Description

technical field The invention belongs to mechanical assembly technology and relates to a method for taking out a bush from a blind hole on a workpiece. Background technique At present, many workpieces, especially jigs or molding dies, in order to prolong the service life and improve the precision, all the positioning holes and installation holes are all in the form of inserts. In order to ensure air tightness, the bottom holes of the inserts are blind holes. In the development of new products, because the products are often changed, these bushes need to be taken out and replaced with bushes of new specifications; for finalized products, because the products will also cause bushing wear during use, they also need to be taken out and replaced. Since the bushing is embedded in the blind hole, how to remove it without damaging the workpiece is a considerable problem. At present, the commonly used method is to take out the bush after it is destroyed. Since the hardness of the bu...

AI Technical Summary

Problems solved by technology

At present, the commonly used method is to take out the bush after it is destroyed. Since the hardness of the bush is higher than that of the workpiece body, the blind holes on the workpiece body are often destroyed at the same time, which causes waste and increases the repair time and cost of the workpiece. , reducing production efficiency

Images