Noncircular box-shaped part segmentation necking process and special die
A technology of box-shaped parts and shrinking dies, which is applied in household appliances, molding tools, manufacturing tools, etc., can solve the problems of difficult size guarantee, complicated processing technology, high cost, etc., achieve high practical value and ensure the effect of aesthetics
Inactive Publication Date: 2012-05-02
SHAANXI BAOCHENG AVIATION INSTR
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Problems solved by technology
[0002] In daily life and work, many box-shaped parts have necking requirements at the mouth. The necking technology of round box-shaped parts is relatively mature, but for non-circular box-shaped parts, machining or inner cavity welding is generally used. , the processing technology is complex, the cost is high, the size is difficult to guarantee, and the appearance is not beautiful enough, so it is necessary to improve
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[0025] Attached below figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9 describe an embodiment of the present invention.
[0026] The segmental necking process for non-circular box-shaped parts includes the following steps:
[0027] The first step, corner necking forming: take the part 15 after deep drawing and trimming, first use the corner necking die to shrink each corner of the part 15 one by one by stamping; and the corner necking die has Concave-convex mating die and punch simultaneously describe the concave die and the curve of the mating part of the punch and the part 15 corner curves are the same; the concrete steps are that the corner necking die is composed of the rounded corner punch (2) and the rounded corner die ( 11) Composition, first put the part 15 to be shrinked on the rounded punch 2, make one corner of the part 15 align with the front end of the rounded die 11, and the upper die 7 moves the lower end slope of the wedge 10 to the rounded concave The rear end of the mol...
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The invention provides a noncircular box-shaped part segmentation necking process and a special die. The process includes the steps: 1, angle necking and 2, straight edge necking. During angle necking, all angles of a deep-drawn and trimmed part are firstly necked down one by one through stamping by an angle necking die with a female die and a male die in concave-convex fit, and simultaneously, curves of matched portions of the female die and the male die are the same with those of the angles of the part. During straight edge necking, all straight edges of the part are necked down one by one through stamping by a straight edge necking die with a female die and a male die in concave-convex fit, and simultaneously, matched portions of the female die and the male die are adaptable to the straight edges of the part. By the aid of the segmentation necking process, consistency, dimensional accuracy and appearance attractiveness of openings of parts can be ensured effectively, and extremely high practical value is achieved.
Description
technical field [0001] The invention belongs to the technical field of necking of box-shaped parts, and in particular relates to a segmental necking process of non-circular box-shaped parts and a special mold. Background technique [0002] In daily life and work, many box-shaped parts have necking requirements at the mouth. The necking technology of round box-shaped parts is relatively mature, but for non-circular box-shaped parts, machining or inner cavity welding is generally used. , the processing technology is complicated, the cost is high, the dimension is difficult to guarantee, and the appearance is not beautiful enough, so it is necessary to improve. Contents of the invention [0003] The technical problem solved by the present invention is to provide a non-circular box-shaped piece segmental necking process and a special mold. First, the corner necking mold is used to shape the corner of the part, and then the straight side necking mold is used to shape the straig...
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IPC IPC(8): B21D51/38B21D37/10
Inventor 肖胜军郑群英黄慧芬张会科贾建芳卿烈乾
Owner SHAANXI BAOCHENG AVIATION INSTR