Precise composite reamer

Abstract

The invention discloses a precise composite reamer. The precise composite reamer comprises a reamer handle, a reamer head and two blades, wherein the reamer handle is welded with the tail part of the reamer head; the reamer head comprises a cylindrical section and a working section; the working section of the reamer head is provided with two diagonal V-shaped chip discharging grooves; the two blades are respectively arranged at the front ends of the two V-shaped chip discharging grooves and are composite blades made of polycrystalline diamond (PCD); the reamer head is made of YG8; the reamer handle is made of GCr15; the reamer handle and the tail part of the reamer head are in V-shaped welding, and the direction of V-shaped welding and the diagonal direction of the two V-shaped chip discharging grooves are vertical. The part of the reamer head participating in cutting is made of YG8, so that (1) the rigidity of the reamer is increased; and (2) the part of the reamer participates in machining of chamfering and arc transition and also participates in cutting similarly to the PCD blades, so that the process requirements are met, and the cost is saved. The handle part is made of GCr15, so that the production cost of the reamer is reduced, simultaneously the machining difficulty of a thread hole in the tail part of the reamer handle is reduced, the production efficiency is increased and the production cost of the reamer is reduced.

Description

technical field [0001] The technical field of cutting tools for mechanical cutting, in particular, relates to a precision composite reamer. Background technique [0002] The existing precision compound reamer, the tool handle and the tool body are made of the same material, which wastes material and costs a lot; in addition, during the reaming process, the reaming and chamfering are carried out step by step, and the quality of the bottom end surface of the reaming hole is poor , the hole machining accuracy is not up to, and the machining efficiency is not high, which needs to be improved. Contents of the invention [0003] The object of the present invention is to provide a precision compound reamer in order to solve the above problems. [0004] The technical solution of the present invention is: a precision composite reamer, including a handle, a cutter head, and two blades, the handle and the tail of the cutter head are welded, the cutter head includes a cylindrical sec...

AI Technical Summary

Problems solved by technology

[0002] The existing precision compound reamer, the tool handle and the tool body are made of the same material, which wastes material and costs a lot; in addition, during the reaming process, the reaming and chamfering are carried out step by step, and the quality of the bottom end surface of the reaming hole is poor , the hole processing accuracy cannot be achieved, the processing efficiency is not high, and needs to be improved

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