CN201500731U

CN201500731U - Punching, drawing and forming composite die for grinding disk of motor

Info

Publication number: CN201500731U
Application number: CN2009201881063U
Authority: CN
Inventors: 张东火; 曹亿祥
Original assignee: ANHUI LUBAN GROUP SHENNIU MACHINE Co Ltd
Current assignee: ANHUI LUBAN GROUP SHENNIU MACHINE Co Ltd
Priority date: 2009-10-10
Filing date: 2009-10-10
Publication date: 2010-06-09
Anticipated expiration: 2019-10-10

Abstract

The utility model relates to a punching, drawing and forming composite die for a grinding disk of a motor, which is characterized in that the foremost end of a punch is designed to be a punch part, a following step part is a drawing part and a forming part, and the back surface and the tail part constitute a fixing part. The transition from the punch part to the drawing part is realized through a circular arc chamfer, thereby preventing the stress concentration when punching, avoiding damaging the die and simultaneously preventing the deformation of a hole; the drawing part and the forming part comprise a step which is a forming surface of a countersink; the transition from the forming part to the fixing part on the back surface is realized through the chamfer, thereby preventing the stress concentration of the die; the hole of a matrix is designed to a through hole which is further communicated with a material leakage through hole of a lower template. The composite die integrates three procedures of punching, drawing and forming into a whole, thereby not only shortening a production line and reducing the labor intensity, but also shortening the production cycle and reducing the cost.

Description

A kind of punching, pull and stretch, formed composite mould that is used for the motor mill

Technical field

The utility model relates to a kind of mould, refers in particular to a kind of punching, pull and stretch, formed composite mould that is used for the motor mill.

Background technology

Being in great demand to the motor mill in the market, and that the motor mill is produced used sheet stock is thinner, mill should be 2.5mm with steel plate thickness, need boring, tapping on the mill and by bolt and motor friction plate assembling, so the connection screw on the mill needs partial thickening, and also need to immerse oneself in to handle, to satisfy matching requirements to connecting screw.Traditional processing technology needs that each is connected screw and adds the weldering boss, again boring, spot-facing again; It produces line length, operation is many, expenditure of time is big, the process-cycle is long, production cost is high, production efficiency is low.

Summary of the invention

The utility model mainly solved to produce line length in the punching of motor mill, pull and stretch and the shaping process, labour intensity is big, expenditure of time is big, the process-cycle is long, production efficiency is low and problem such as cost height, and a kind of punching, pull and stretch, formed composite mould that is used for the motor mill is provided.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of punching, pull and stretch, formed composite mould that is used for the motor mill comprises upper die and lower die, and the patrix of punch die is earlier punch to be packed in the punch retainer, after locating by alignment pin and cope match-plate pattern, is fastenedly connected with holding screw; Discharging rubber is packed in the hole of punch retainer again, blank holder is connected with punch retainer from the pilot hole of cope match-plate pattern with attachment screw, finish the assembling of patrix, its top is die shank.The counterdie of punch die is by the die alignment pin die and lower bolster to be located, and is fastening with the holding screw of interior hexagonal; Again the blank alignment pin is packed in the die, finish the assembling of counterdie.Close guide pillar, guide pin bushing install composite die and get final product.

As preferably, the such scheme design feature is: punch be designed to the drift position foremost, stepped portions is pull and stretch position, shaping successively, back and afterbody are fixed position.The drift position carries out the transition to the pull and stretch position by circular arc chamfering, and stress is concentrated when preventing punching, and mold damage prevents the distortion in hole simultaneously; Pull and stretch position and shaping have individual step, are the forming faces of countersunk, and its diameter should be the size of countersunk; Shaping and back fixed position chamfering transition prevent that mold stresses is concentrated.

The hole of die is designed to through hole, and communicates with lower bolster leakage material through hole, so that the waste material of punching leaks material; Its bore dia is designed to critical size, and wherein the annular gap between die aperture and the punch pull and stretch position external diameter equals to design the wall thickness in pull and stretch hole.

The utility model has the advantages that

1, this composite die combines punching, pull and stretch and moulding three process together and has shortened production line, has reduced labour intensity, shortened the production cycle and reduced cost.

2, this composite die is reasonable in design, simple in structure, complete function, dismounting, characteristics easy to maintenance.

3, this compound die has that practicality is wide, production efficiency is high, the characteristics of long service life.

4, this compound die has the machining accuracy height, and surface quality is good, the characteristics that production cost is low.

5, this mould is applied to production field, has the processing characteristic that saves material.

6, this mould has low cost of manufacture, easily machining characteristics.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of punch in the utility model.

Among the figure: 1, template; 2, punch retainer; 3, alignment pin; 4, holding screw; 5, punch; 6, blank holder; 7, die; 8, die alignment pin; 9, lower bolster; 10, holding screw; 11, blank alignment pin; 12, guide pillar; 13, guide pin bushing; 14, discharging rubber; 15, attachment screw; 16, die shank.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further.

Punch 5 is packed in the punch retainer 2,, be fastenedly connected with holding screw 4 by behind alignment pin 3 and cope match-plate pattern 1 location; Discharging rubber 14 is packed in the hole of punch retainer 2 again, blank holder 6 is connected with punch retainer 2 from the pilot hole of cope match-plate pattern 1 with attachment screw 15, finish the assembling of patrix, its top is die shank 16.And then pass through die alignment pin 8 with die 7 and lower bolster 9 location, fastening with the holding screw 10 of interior hexagonal; Again blank alignment pin 11 is packed in the die 7, finish the assembling of counterdie.Close guide pillar 12, guide pin bushing 13 have promptly been finished the assembling of this practical compound die.

During work, blank is placed on the die 7 by blank alignment pin 11 location, punch press adds man-hour, punch 5 descends with slider of punch with blank holder 6 simultaneously, blank holder 6 at first contact blank and the reaction force by compression discharging rubber 14 with blank holding on die 7, the punching operation is at first carried out with die 7 in punch 5 drift positions thereupon, and blank is gone out a technology aperture, and the waste material in hole is then leaked down through lower bolster 9 leakage material through hole by the through hole of die 7;

Punch 5 continues in the decline processes, the technology aperture that the pull and stretch position has been gone out by blank, utilize and die 7 between the annular gap, blank is carried out bulging and with the hole pull and stretch, reaches workpiece hole and thicken size;

Punch 5 continues to descend, and then punch 5 utilizes the pull and stretch hole of the step of its shaping and 7 pairs of blanks of die to carry out extrusion molding to be countersunk;

When punch 5 went up, blank was blocked by blank holder 6, can not block with punch 5, keeps somewhere naturally on die 7, is easy to just can take off disposable punching, pull and stretch, the forming process finished like this.

Claims

1. punching, pull and stretch, formed composite mould that is used for the motor mill, comprise upper die and lower die, wherein in the patrix punch (5) be designed to the drift position foremost, stepped portions is pull and stretch position, shaping successively, back and afterbody are fixed position, are characterized in: the drift position carries out the transition to the pull and stretch position by circular arc chamfering; Pull and stretch position and shaping have individual step, are the forming faces of countersunk, and its diameter is the size of countersunk; Shaping and back fixed position chamfering transition.

2. a kind of punching, pull and stretch, formed composite mould that is used for the motor mill according to claim 1 is characterized in that the hole of die (7) is designed to through hole, and communicates with lower bolster leakage material through hole.