Patent ID: 6131533
Filing Date: 2000-10-17
Classification: C23C,Y10S,Y10T

Abstract:
A jig for forming a film by supporting a guide bush in a vacuum vessel and conducting electricity through the guide bush when a hard carbon film is formed over an inner surface of the guide bush to be mounted on an automatic lathe and to be in sliding contact with a workpiece by a plasma CVD process, comprising:a rodlike auxiliary electrode inserted into a center bore forming the inner surface of the guide bush,an auxiliary electrode support member made of a conductive material for supporting the auxiliary electrode along with the axis of the center bore so as to face the inner surface,an auxiliary electrode insulation member inserted into an stepped section which has a internal diameter larger than the internal diameter of the inner surface of the center bore of the guide bush so as to fix the auxiliary electrode support member in the guide bush and to project the same in the opposite direction of the auxiliary electrode along the center axis thereof,a first electrode plate made of a conductive material on which the guide bush is mounted with its axis perpendicular while the end portion of the stepped section side is contacted therewith electrically,legs made of a conductive material to be put on the bottom of the vacuum vessel,a second electrode plate made of a conductive material which is integrated with the legs and is connected with the projection of the auxiliary electrode support member projected out of the auxiliary electrode insulation member, andan insulation member for insulating the first electrode plate from the second electrode plate and for fixing them to the legs.