Lapping apparatus

Details Lapping apparatus Lapping apparatus

1996-11-04

1998-05-26

Rose, Robert A.

Abrading

Machine

Rotary tool

451 49, 451302, 451306, B24B 700

Patent

active

057556156

ABSTRACT:
A lapping apparatus for improving the durability of a lap film and the reliability of a lapping apparatus. A shoe having a recessed workpiece retaining section is installed on each of the opposed faces of a pair of clamp arms. A deep groove is formed in the center of the workpiece retaining section. Guide plates are fixed to the shoe so as to block both sides of the deep groove. A drawing roller is disposed in the deep groove and the rotation shaft of the drawing roller is supported by the guide plates. A lap film is introduced to the workpiece retaining sections of the shoes, drawn into the deep grooves in the center of the workpiece retaining sections, and hung around the drawing rollers. Even when the lap film is being fed, the lap film feeding path remains unchanged. Thus, there is no need to clamp the workpiece with a high pressure to bring the lap film into close contact with the face of the workpiece to be processed.

REFERENCES:
patent: 4993191 (1991-02-01), Judge et al.
patent: 4999953 (1991-03-01), Kinugawa
patent: 5065548 (1991-11-01), Shimizu et al.
patent: 5088240 (1992-02-01), Ruble et al.
patent: 5437125 (1995-08-01), Barton, II
patent: 5536201 (1996-07-01), Winkelmann
patent: 5651719 (1997-07-01), Pineau

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