CN202239230U

CN202239230U - Composite die for trimming and punching connecting rod forgings

Info

Publication number: CN202239230U
Application number: CN2011203002960U
Authority: CN
Inventors: 罗天园
Original assignee: CSR Ziyang Locomotive Co Ltd
Current assignee: CRRC Ziyang Co Ltd
Priority date: 2011-08-18
Filing date: 2011-08-18
Publication date: 2012-05-30
Anticipated expiration: 2021-08-18

Abstract

The utility model discloses a composite die for trimming and punching connecting rod forgings, which comprises a male die, a female die, a punch seat, a punch, a workpiece tray and an ejector. The male die is fixed onto an upper clamping device of a press, the female die is fixed onto a base of the press through a die holder, the punch seat is fixed onto the base of the press, the punch is fixed onto the punch seat, the workpiece tray is connected with the clamping device through a pull rod mechanism, and the ejector is fixed onto the workpiece tray. The working process of the composite die includes the steps of workpiece placement, trimming, punching and demoulding, wherein the procedures of trimming and punching are completed at one step on the composite die. The composite die effectively solves the problems of high labor intensity of workers, waste of resources, long production cycle and the like due to the fact that past trimming and punching procedures for large and medium diesel engine connecting rod forgings need various work types and multiple procedures, and conditions are provided for rapidly producing the forgings on a large scale.

Description

A kind of composite die that is used for connecting rod forging edge-cutting and hole-punching

Technical field

The utility model belongs to the machining mould applications, particularly, relates to a kind of composite die that is used for connecting rod forging edge-cutting and hole-punching.

Background technology

The present situation of at present the connecting rod forging of big-and-middle-sized diesel engine being processed is workpiece to be carried out single side cut operation, to employing punching of the gross weight in workpiece two stomidiums or Methods of OFC-A removal.Such production technology has labor strength big, consume oxygen, acetylene resource, and shortcomings such as production cycle length have improved production cost, have delayed the delivery cycle, realize the formation bottleneck of producing fast in enormous quantities for such workpiece.

Summary of the invention

The purpose of the utility model is, designs a kind of new technological method for processing and matching die, makes for side cut, the disposable completion of punching operation in the processing of connecting rod forging.

The purpose of the utility model realizes through adopting following technical scheme:

A kind of composite die that is used for connecting rod forging edge-cutting and hole-punching; Comprise: the holder part dish that be fixed in punch on the clamper of forcing press top, is fixed in die on the press base, is fixed in the punch holder on the press base and is fixed in drift on the punch holder, is connected with clamper through drag link mechanism through die holder and be fixed in the pusher on the holder part dish, it is characterized in that: punch moves back and forth between top dead centre and lower dead center with forcing press clamper knee-action; Said drift top height is lower than the last cutting edge of die, and both differences in height are greater than the flash thickness of workpiece; Holder part dish and pusher move up and down with clamper and punch through drag link mechanism.Its described punch edge shape and workpiece top coupling, the shape of said pusher and workpiece bottom coupling.

The course of work of the utility model comprises puts workpiece, side cut, punching, four steps of the demoulding, it is characterized in that: said side cut, the once property completion on a cover composite die of punching two procedures:

(1) workpiece places on the aforesaid die;

(2) aforesaid punch is descending, intersects with said die and accomplishes the side cut operation;

(3) workpiece falls on the aforesaid drift, along with said punch continuation is descending, accomplishes the punching operation, and workpiece falls on the aforesaid pusher;

(4) aforesaid clamper comes downwards to fixing punch on it and goes upward to top dead centre after bottom dead center immediately at this moment; Aforesaid holder part dish also goes upward to the workpiece extracting position with fixing pusher on it through aforesaid drag link mechanism thereupon; Workpiece reaches under the guiding of fixing drift on it in said punch holder; Eject by said pusher, accomplish the demoulding.

The temperature of its described workpiece in process is 800 ℃ to 900 ℃.

The utility model can disposable completion to side cut, the punching operation of big-and-middle-sized diesel engine connecting bar forging; Having solved problems such as the labor strength that big-and-middle-sized in the past diesel engine connecting bar forging is cut edge, the punching operation needs multiplex's kind, multiple working procedure to cause is big, waste resource, production cycle length effectively, is that such workpiece is realized the condition that provides of producing fast in enormous quantities.

Description of drawings

Fig. 1 is that composite die assembling sketch map is positive in the utility model;

Fig. 2 is composite die assembling sketch map side in the utility model;

Fig. 3 puts the workpiece sketch map for the utility model;

Fig. 4 is that the utility model side cut operation is accomplished sketch map;

Fig. 5 is that the utility model punching operation is accomplished sketch map;

Fig. 6 accomplishes sketch map for the utility model demoulding.

Reference numeral: 1-punch, 2-clamper, 3-drag link mechanism, 3-1-upper connecting rod, 3-2-lift head, 3-3-lower link, 3-4-U template, 3-5-bolt and nut, 3-6-slip slotted eye, 4-die, 5-die holder, 6-big end hole drift, 7-big end hole punch holder, 8-microcephaly hole drift, 9-microcephaly hole punch holder, 10-holder part dish, 11-pusher, 12-press base, 13-workpiece.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described:

A kind of composite die that is used for connecting rod forging edge-cutting and hole-punching as depicted in figs. 1 and 2; Comprise: the holder part dish 10 that be fixed in punch 1 on the forcing press top clamper 2, is fixed in die 4 on the press base 12, is fixed in big end hole punch holder 7 and big end hole drift 6, microcephaly hole punch holder 9 and microcephaly hole drift 8 on the press base 12, is connected with clamper 2 through pull bar 3 through die holder 5 and be fixed in the pusher 11 on the holder part dish 10, it is characterized in that: punch 1 moves back and forth between top dead centre and lower dead center with clamper 2 knee-actions; The top height of said drift 6,8 is lower than the last cutting edge of die 4, and both differences in height are greater than the flash thickness of workpiece 13; Holder part dish 10 and pusher 11 together move up and down with clamper 2 and punch 1.

This wherein; Accurately locate for keeping workpiece 13 balances; The edge shape of the punch 1 in the said compound die and the top of workpiece 13 coupling; The bottom coupling of the shape of said pusher 11 and workpiece 13, said punch holder 7,9 and drift 6,8 then play the effect of lead in 10 risings of holder part dish, workpiece 13 knockout courses, avoid the workpiece 13 and the cutting edge of die 4 to interfere.

Therefore stroke and holder part dish 10 travel range and the upper and lower stop and inconsistent of stroke that move up and down need to use drag link mechanism 3 realize driving 10 motions of holder part dishes by clamper 2 because clamper 2 moves up and down.Its described drag link mechanism 3 comprises upper connecting rod 3-1 and lower link 3-3; The top of said lower link 3-3 is fixed with the U template 3-4 of horizontal arrangement; Slip slotted eye 3-6 is arranged at the bottom of lower link 3-3; Said holder part dish 10 passes bolt and nut 3-5 and the lower link 3-3 of lower link 3-3 bottom slip slotted eye 3-6 and flexibly connects through being positioned at its side, and lower link 3-3 can be in slip slotted eye 3-6 length range and 10 relative motions of holder part dish; Said upper connecting rod 3-1 upper end is fixedly connected with clamper 2; The width dimensions of its body of rod is slightly less than the A/F of said U template 3-4; There is lift the 3-2 of size greater than U template 3-4 opening the lower end of upper connecting rod 3-1, and assembling the time lifts the below that a 3-2 is positioned at lower link top U template 3-4; Upper connecting rod 3-1 can be in body of rod length range and lower link 3-3 relative motion.

The course of work of the utility model such as Fig. 3 comprise and put workpiece, side cut, punching, four steps of the demoulding to shown in Figure 6, it is characterized in that: said side cut, the once property completion on a cover composite die of punching two procedures:

(1) workpiece 13 places on the foregoing die 4;

(2) foregoing punch 1 is descending, intersects the side cut operations of accomplishing workpiece 13 with said die 4;

(3) foregoing workpiece 13 falls on foregoing big end hole drift 6 and the microcephaly hole drift 8, along with said punch 1 continuation is descending, accomplishes the punching operation to said workpiece 13, and workpiece 19 falls on the foregoing pusher 16;

(4) said punch 1 comes downwards to and goes upward to top dead centre after bottom dead center immediately, and the pusher 11 that is fixed on the foregoing holder part dish 10 also goes upward to workpiece 13 extracting positions thereupon, and workpiece 13 is ejected by said pusher 11, accomplishes the demoulding.

Aforesaid clamper 2 came downwards to fixing punch 1 on it and went upward to top dead centre after bottom dead center immediately this moment; Aforesaid holder part dish 10 and fixing pusher 11 on it also go upward to the extracting position of workpiece 13 thereupon through aforesaid drag link mechanism 3; Workpiece 13 reaches fixing big end hole drift 6, microcephaly hole punch holder 9 on it in said big end hole punch holder 7 and reaches under the guiding of fixing microcephaly hole drift 8 on it; Eject by said pusher 11, accomplish the demoulding.

Claims

1. composite die that is used for connecting rod forging edge-cutting and hole-punching; Comprise: the holder part dish that be fixed in punch on the clamper of forcing press top, is fixed in die on the press base, is fixed in the punch holder on the press base and is fixed in drift on the punch holder, is connected with clamper through drag link mechanism through die holder and be fixed in the pusher on the holder part dish, it is characterized in that: punch moves back and forth between top dead centre and lower dead center with forcing press clamper knee-action; Said drift top height is lower than the last cutting edge of die, and both differences in height are greater than the flash thickness of workpiece; Holder part dish and pusher move up and down with clamper and punch through drag link mechanism.

2. a kind of composite die that is used for connecting rod forging edge-cutting and hole-punching as claimed in claim 1, its described punch edge shape and workpiece top coupling, the shape of said pusher and workpiece bottom coupling.