Method for fixturing a workpiece

Details Method for fixturing a workpiece Method for fixturing a workpiece

1992-03-09

1993-05-18

Watson, Robert C.

Metal working

Method of mechanical manufacture

Work holding

269 7, B25B 100

Patent

active

052109267

ABSTRACT:
Disclosed are a method for fixturing and manufacturing a machined workpiece, an article of manufacture including, in combination, a workholder and a workpiece, and a core box used to form the workholder. The workholder preferably is made of a cured resin bonded sand mixture. The workpiece is placed within the core box. Then the uncured resin bonded sand mixture is packed about the workpiece in the core box and allowed to cure to form a frangible workholder for securing the workpiece. The core box may then be disassembled to release the workholder. The workholder next is positioned and affixed relative to a machining apparatus and machined. Mechanical forces, such as impact blows and/or abrading particles, such as sand or shot, are applied to the frangible workholder to disintegrate the workholder from about the machined workpiece.

REFERENCES:
patent: 995537 (1911-06-01), Hertner et al.
patent: 3790152 (1974-02-01), Parsons
patent: 3897535 (1975-07-01), Lapac et al.
patent: 3921343 (1975-11-01), Speyer
patent: 4110885 (1978-09-01), Fisher
patent: 4685660 (1987-08-01), Dillner

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