Spade bit, manufacturing method by using continuous blank material and its forging equipment

Abstract

The present invention provides a method and apparatus for forming a plurality of parts, such as spade-type boring bits, from a continuous stock material. Thus, the various steps of the forming method of the present invention can be performed to predetermined portions of the continuous stock material prior to separating the continuous stock material into discrete parts, thereby enhancing the efficiency of the forming process. The present invention also provides an improved forge for forming portions of the continuous stock material into parts having a predetermined shape. The forge can be designed to provide a clearance region proximate the forward end of the ram to permit slight flexing of the forward end of the ram in a radially outward direction during forging operations. The forge can also include a lubrication system for lubricating its various components. In addition, the forge can incrementally rotate the ram after one or more parts have been forged. By repeating the incremental rotation of the ram, the forge will eventually rotate the ram a full 360 DEG . An improved forging die is also provided which includes a back surface having a conical medial section and a pair of conical lateral sections that are recessed relative to the medial section such that forces will principally be applied to the medial section during forging operations.

Description

[0001] This application is the follow-up application of U.S. patent application 09 / 143630 filed on August 28, 1998. The 09 / 143630 application is a follow-up application of U.S. patent application 08 / 662665 filed on June 14, 1996. The 08 / 662665 application has been published as US5842267, and it It is also the follow-up application of U.S. patent application 08 / 366986 filed on December 30, 1995 and U.S. patent application 08 / 514071 filed on August 11, 1995. The 08 / 366986 and 08 / 514071 applications have been published as US5700113 and US5697738 respectively. The contents of the above documents are in This whole is introduced. technical field [0002] The present invention relates to a method and apparatus for manufacturing parts of a predetermined shape, such as drill bits, particularly spade drill bits, from a continuous stock material. The invention also relates to an improved forging apparatus for manufacturing components of predetermined shape, such as drill bits, in particu...

AI Technical Summary

Problems solved by technology

[0009] Initially, the metal wire and / or metal billet is cut into multiple separate billets, however, throughout the hot forging process, the components must be handled and machined one by one, thus reducing the efficiency of manufacturing spade bits and thus increasing The final cost of the spade bit

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