BUCKET TAPPET AND METHOD FOR PRODUCING SAME

摘要

The invention relates to a bucket tappet for an internal combustion engine, having a tappet housing with a hollow cylindrical bucket skirt and a bucket base which closes one side of the bucket skirt and on which the bucket skirt is formed by cold forming a steel blank without cutting. The outside of the bucket base is used as a contact surface for an internal combustion engine cam which transfer a stroke movement to the bucket tappet, and the outside of the bucket skirt is used as a contact surface for an internal combustion engine guide bore which supports the bucket tappet in the stroke direction. The aim of the invention is to develop a bucket tappet of the aforementioned type and a method for producing same with respect to reduced production costs. This is achieved in that the unmachined and uncoated cam contact surface of the bucket base is machined using a brushing tool and no additional mechanical machining of the cam contact surface is carried out.

主权项

1. A bucket tappet for an internal combustion engine, comprising a tappet housing with a hollow-cylindrical bucket skirt and a bucket base that closes the bucket skirt on one side and on which the bucket skirt is formed by cold forming of a steel blank without cutting, an outside of the bucket base is adapted for use as a contact surface for a cam of the internal combustion engine transferring a stroke movement to the bucket tappet and an outside of the bucket skirt is adapted for use as a contact surface for a guide hole of the internal combustion engine supporting the bucket tappet in a stroke direction, and the cam contact surface of the bucket base is unmachined and uncoated and processed by a brush tool with a cutting process forming a brushed cam contact surface.