Half slot finish machining process of sewing machine press foot

Abstract

The invention relates to a half slot finish machining process of a sewing machine press foot. The half slot finish machining process is characterized by including inspecting a blank; grinding the bottom surface of the blank; precisely grinding the side walls of the blank; grinding a 7.4 groove; performing thermal treating; precisely grinding the thermally treated bottom surface of the blank; precisely grinding the 7.4 groove; precisely grinding a half slot; arranging two round pins on the side walls of the blank to serve as positioning points, ensuring positioning of the lateral sides of the 7.4 groove and the side walls of the blank in the vertical direction, arranging a round pin on the right angle side opposite to the side walls of the blank, ensuring positioning of the front position and the back position of the 7.4 groove, performing fixing through three-point positioning, precisely casting the blank and reserving 0.05 mm machining allowance, leading the diameter phi of the half slot to be 2.95, precisely casting the blank and reserving the grinding allowance and once forming and grinding the half slot with the diameter phi to be 3+0014 / 0. The half slot finish machining process has the advantages that multiple traditional procedures including drilling, reaming, grinding and linear cutting are omitted in the high-precision half slot once forming and grinding process; convex blocks do not need to be pre-cast on two side walls of the blanks so that cost is greatly reduced and efficiency is improved.

Description

technical field [0001] The invention belongs to a sewing machine presser foot, in particular to a semicircular groove finishing process of the sewing machine presser foot. Background technique [0002] The sewing machine presser foot is an essential part of the feeding mechanism of the sewing machine. Various types of sewing machine presser feet play a very important role in the production process. role. It is very important to choose different sewing machine presser feet in different sewing operations. see attached figure 1 , 2 The industrial sewing machine presser foot shown is a new product developed by the company received from foreign sewing machine manufacturers. There is an R1.5 semicircle groove in its structure, and its function is: the small shaft of the sewing machine presser foot arm is placed in the semicircle groove, and the small shaft is pressed in the semicircle groove with a spring leaf. The R1.5 semicircular groove in the presser foot of the new produ...

AI Technical Summary

Problems solved by technology

The delivery time of foreign merchants is very short, and it is urgent to develop new processing technology

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