CN1850394A - Method for preventing complex profile die forging from generating misplacement - Google Patents

Abstract

The present invention discloses a method for preventing complex moulding surface die forging from producing mismatch. Said method includes the following process: (1), in inner wall of die cavity of lower die of die forging with complex moulding surface processing recessed groove communicated with die parting face, and on the edge of die parting face of die forging forming projection matched with the above-mentioned recessed groove; (2), when the die stamping process is made, utilizing the above-mentioned recessed groove and projection to implement accurate positioning; and (3), after the die forging is processed, the described projection can be buffed away.

Description

The method of prevention complex profile die forging from generating misplacement

Technical field

The present invention relates to a kind of processing method of complex profile die forging, is that a kind of complex profile revolving body forging part that prevents is repeatedly processed the method that produces offsetting specifically.

Background technology

Profile is the very complicated aluminium alloy forging part of revolving body, inner cavity size, needs many fire time die forgings to be shaped in process of production.Because this mould section part profile is a revolving body, be difficult to guarantee the accurate of contraposition when blank was gone into mould between each fire was inferior, if and between each fire time blank when going into mould contraposition inaccurate or dislocation takes place will cause product cavity to misplace, the generation folding, serious will cause product rejection.

Summary of the invention

At profile is the complex profile die forging of the revolving body contraposition problem when producing, and the object of the present invention is to provide a kind of method of preventing complex profile die forging from generating misplacement, guarantees that the contraposition when blank is gone into mould between each fire time is accurate.

The present invention adopts following technical solution:

(1) the counterdie mould intracavity wall at complex profile die forging is processed with the groove that communicates with its die joint, is formed with the boss with this groove fit after the mold pressing at forging part die joint edge;

(2) when processing, many fire time mold pressings utilize the boss at forging part die joint edge and the groove fit of counterdie mould intracavity wall to realize accurately location;

(3) polish off described boss after forging part machines.

The invention has the beneficial effects as follows: owing to be provided with the groove and the boss of location at counterdie and corresponding forging part correspondence position, each fire adds can utilize accurately location of this groove and boss realization man-hour, not only guaranteed processing precision of products, improved yield rate, and can improve contraposition efficient, reduced the processing cost of product.

Description of drawings

Fig. 1 is the product structure schematic diagram of forging part to be processed.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the product structure schematic diagram of the band positioning boss that adopts method of the present invention and produce.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is a counterdie mold cavity configuration schematic diagram.

The specific embodiment

Be described further below in conjunction with the method for the drawings and specific embodiments, to help understanding content of the present invention prevention complex profile die forging from generating misplacement of the present invention.

As Fig. 1 and Fig. 2 and Fig. 3 and shown in Figure 4, be the forging part 1 that a profile is a revolving body, the dark and structure more complicated of its inner chamber 2 need could be shaped through time die forging of too much fire.

For prevent between each fire time blank when going into mould contraposition inaccurate, adopt the method for following prevention complex profile die forging from generating misplacement:

(1) as shown in Figure 5, be processed with the groove 14 that communicates with its die joint 13 at die cavity 12 inwalls of the counterdie 11 of complex profile die forging, the upper dimension of groove 14 is not less than lower dimension so that depanning; As shown in Figure 3 and Figure 4, die joint 3 edges at forging part 1 are formed with the boss 4 that cooperates with this groove 14 after the mold pressing;

Utilize the boss 4 at die joint 3 edges on the forging part 1 and the groove 14 of counterdie 11 mould intracavity walls to cooperate realization forging part blanks when each fire is gone into mould, accurately to locate when (2) how fire time mold pressings are processed;

(3) forging part machines the back structure as shown in Figure 3 and Figure 4, polishes off the forging part 1 that boss 4 just obtains project organization illustrated in figures 1 and 2 again.

Claims (1)

1, a kind of method of preventing complex profile die forging from generating misplacement, it is characterized in that: this method is made of following process:

(1) the counterdie mould intracavity wall at complex profile die forging is processed with the groove that communicates with its die joint, is formed with the boss with this groove fit after the mold pressing at forging part die joint edge;

(2) when processing, many fire time mold pressings utilize the boss at forging part die joint edge and the groove fit of counterdie mould intracavity wall to realize accurately location;

(3) polish off described boss after forging part machines.

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