Mirror-surface motor shell drawing die and drawing method thereof

Abstract

The invention discloses a mirror-surface motor shell drawing die and a drawing method thereof. The drawing die comprises an upper die plate, a push rod, a base plate, a female die positioning ring, afemale die fixing plate, a push rod limiting ring, a female die, a male die, a male die positioning ring, a male die outer sleeve, a supporting plate, a male die fixing part, a lower die plate, a supporting rod, an upper die plate limiting rod, a first inner hexagon screw, a second inner hexagon screw and a third inner hexagon screw. The method comprises the steps that the mirror-surface motor shell workblank size is calculated; according to the mirror-surface motor shell needs, drawing depths of a first stage and a second stage and the reduction gap of the third stage are designed, and the mirror-surface needs are achieved; the male die, the female die, female die circular beads and motor shell workblank in contact with the male die, the female die and the female die circular beads are evenly coated with lubricating oil, first-time drawing, second-time drawing, and third-time drawing are carried out, during drawing, the mold gap is reduced, and the drawing pressure is 1.5 to 3.0 MPa;and after drawing is finished, pressure is relieved, and a workpiece is taken out. The production efficiency is improved, and production cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of mechanical manufacturing and processing, and particularly relates to a drawing die for a mirror motor housing and a drawing method thereof. Background technique [0002] Motor manufacturing has experienced more than two hundred years of development history. Among them, the processing technology of motor housing is becoming more and more mature, and stamping forming is widely used because of its high production efficiency and high production accuracy. After the motor housing meets the use requirements, people are paying more and more attention to the aesthetics of the motor housing. Improving the surface quality of the motor housing to achieve a mirror effect is a means to improve the aesthetics. [0003] The existing mirror surface processing method is mainly milling, and there are very few researches on stamping forming, and there are different problems. For example, Chinese patent 200910055650.5, which is aime...

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Problems solved by technology

[0003] The existing mirror surface processing methods are mainly milling, and there are very few studies on stamping forming, and there are different problems, such as Chinese patent 200910055650.5, which is aimed at the mirror surface processing of wingtip covers, which is not universal; Chinese patent 201010102112 The .X design process is to add saponification treatment between each step of deep drawing, which undoubtedly increases the processing cost and complexity

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