A precision machining process for the head of a wrench body blank

Abstract

The invention discloses a precise machining technique for a spanner body blank head. The technique comprises the steps of feeding and positioning, finish milling of a plane A, drilling of a center hole B, chamfering of the front half portion of the center hole B, chamfering of the rear half portion of the center hole B, reaming of the center hole B, finish milling of a plane C, rough milling of a groove D, finish milling of the groove D and discharging and cleaning. By the adoption of the precise machining technique, the spanner body blank head machining technique is effectively integrated to be in a continuous and automatic manufacturing mode, the technique is divided into the two procedures, and the design that making the production takt differences between all the procedures minimum is guaranteed; the problems that according to a technological process in a single-machine manufacturing mode, the production takt is long, and labor cost is high are solved by using a ten-station full-automatic spanner machining center in cooperation with the precise machining technique, and the situation that installation precision errors are caused by switching between the different stations, and collision is caused by frequent transferring of a spanner body between the different machining stations are avoided; production efficiency is improved, machining precision is also improved, labor intensity of workers is relived, labor cost space is released, and manufacturing cost is reduced for enterprises.

Description

technical field [0001] The invention relates to a precision machining process, in particular to a precision machining process for the head of a wrench body blank. Background technique [0002] A wrench is a widely used daily tool for disassembling nuts or bolts of a certain size. Although its structure is simple, it plays a very important role in people's daily life. At present, the common wrenches on the market are dead wrenches and adjustable wrenches. One or both ends of the wrench are made with fixed size openings, which are durable, but only suitable for one or two sizes of nuts, and the scope of application is small; the adjustable wrench can be flexibly used for nuts of various sizes. widely. [0003] As the skeleton of the adjustable wrench, the wrench body is the installation carrier of other adjustable wrenches. The machining accuracy of the head of the wrench body blank directly affects the performance of the adjustable wrench. At present, the head of the wrenc...

AI Technical Summary

Problems solved by technology

At present, the head of the wrench body blank in my country is almost processed by a single machine, with low process integration and slow production tempo. At the same time, due to the switching of different stations, the accumulation of installation accuracy errors affects the final machining accuracy, and the frequent transfer of the wrench body to the processing station , it is unavoidable that bumps and other situations will occur, which will directly affect the quality of the wrench

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