A production process of needle selection presser foot for flat knitting machine

Abstract

The invention discloses a production technology of needle selection presser foots of a flat knitting machine, and belongs to the field of the production of parts and components of the flat knitting machine of a knitting computer. A conventional production technology of the needle selection presser foots has the problems that in the heat treatment process after cutting and forming, the needle selection presser foots are poor in toughness and short in service life because the stress is concentrated and deformation is large. The production technology comprises the following steps of (1) forging and pressing a blank; (2) drilling holes ; (3) performing punching and folding; (4) performing heat treatment; (5) performing flat-stone milling; (6) performing tempering and heat treatment; (7) performing fast silking cutting; (8) performing finish machining on chamfers; and (9) performing correction processing. The needle selection presser foots produced through the adoption of the production technology disclosed by the invention has the advantages of being good in toughness and long in service life, and the appearance of the needle selection presser foots is bright and beautiful.

Description

technical field [0001] The invention relates to the field of production of computerized flat knitting machine parts, in particular to a production process of a flat knitting machine needle selection presser foot. Background technique [0002] The needle selection presser foot is one of the important parts of the computerized flat knitting machine. Its main function is to suppress the up and down movement of the needle selection during the knitting process of the computerized flat knitting machine. The quality of the needle selection presser foot is directly related to the production quality and quality of knitted products. production rate. At present, the production process of the needle selection presser foot in the market basically adopts wire cutting to cut and shape. After bending, drilling and other processes, the final heat treatment, shape polishing and correction treatment are carried out. Due to the thin shape of the needle selection presser foot, In particular, th...

AI Technical Summary

Problems solved by technology

At present, the production process of the needle selection presser foot in the market basically adopts wire cutting to cut and shape. After bending, drilling and other processes, the final heat treatment, shape polishing and correction treatment are carried out. Due to the thin shape of the needle selection presser foot, In particular, the shape of the working part is small, and there are problems such as stress concentration and large deformation during the heat treatment process after cutting and forming, which makes the needle selection presser foot poor in toughness, short in service life, and prone to breakage during use. Manual grinding is used in the polishing process, which has poor controllability of the external dimensions, and if the grinding time is too long, it is easy to cause redness, cold hardening, etc., which reduces the qualified rate and production quality of the product

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