CN201253669Y

CN201253669Y - Flattening forming die

Info

Publication number: CN201253669Y
Application number: CNU2008200422342U
Authority: CN
Inventors: 姜玉兰; 王军
Original assignee: JIANGSU BLUE MACHINERY MANUFACTURING Co Ltd
Current assignee: JIANGSU BLUE MACHINERY MANUFACTURING Co Ltd
Priority date: 2008-07-28
Filing date: 2008-07-28
Publication date: 2009-06-10
Anticipated expiration: 2018-07-28

Abstract

The utility model discloses a planishing molding module which is integrally in the shape of a disk, and comprises an upper surface and a lower surface, wherein the upper surface is a plane; the shape of the lower surface is matched with that of a forged piece (7); the circumference of the lower surface is provided with a first downward taper angle (2) from inside to outside; the taper of the taper angle is the same as that of the outer edge downwards; a second taper angle (1) is connected with the first taper angle (2) and is opposite to the first taper angle; the other end of the second taper angle (1) is an arc shape, and is sequentially provided with a first arc (3), a second arc (4) and a third arc (5). The outside diameter of the cylindrical bottom of the planishing molding module (6) is equal to that of a punching pin; the vertical dimension from the bottom of the planishing molding module to the highest point of the first taper angle is equal to the height of a forged piece. The shape of the planishing molding module is matched with that of a forged piece in structure, thus both ends of a forged product are not easy to sink in the forging technology of the driven wheel of the rear axle of a vehicle, and the molding module has small weight, low investment for devices, and small occupation area.

Description

A kind of pressing mould

Technical field

The utility model relates to the pressing mould that uses in a kind of automobile axle driven pulley Forging Technology process.

Background technology

At present, automotive driven wheel blank Forging Technology mainly contains two kinds:

A kind of program of process is successively: blanking, with cylindrical work piece jumping-up, punching, punching the wad, with bellmouth head via hole, with pneumatic hammer flatten, rolling on machine for rolling ring at last, the forging of this kind Forging Technology processing, two end faces have significant depressions, therefore, thickness direction will have bigger allowance, the waste raw material;

The program of second kind of process is successively: blanking, with cylindrical work piece jumping-up, punching, punching the wad, on friction press or die hammer, utilize mould to come die forging shaping, rolling on machine for rolling ring at last, the required forging equipment tonnage of this kind technology is big.

The punching the wad process afterwards that is not both of these two kinds of processes, first method adopts flattening process, utilize pneumatic hammer that product is flattened, and the second method employing is the die forging trimming, also promptly on friction press or die hammer, utilize mould to come the die forging shaping, from these two kinds of methods as can be seen, owing to utilize different equipment to determine the difference of process, but there is shortcoming separately in the both, the program of utilizing pneumatic hammer to flatten in the first method, make two end faces of module that significant depressions be arranged, thickness direction will have bigger allowance, the waste raw material, and second method utilizes forging mold that forging is carried out die forging, used friction press and forging mold equipment tonnage are big, and equipment investment is big, and floor space is big.

The utility model content

Technical problem to be solved in the utility model provides the forging mold that uses in a kind of automobile axle driven pulley Forging Technology process, and the equipment that makes the required base of this technology forge is little, and effectively reduces sunken end face.

For solving the problems of the technologies described above, the utility model provides the pressing mould that uses in a kind of automobile axle driven pulley Forging Technology process.

Pressing mould of the present utility model, integral body is disc, have upper surface and lower surface, described upper surface is the plane, external force is applied to upper surface, described underside shape matches with the forging shape, has first a downward cone angle from inside to outside in the lower surface circumferential outer edge, and its tapering is identical with the tapering of the outward flange downward direction of forging; Link to each other with first cone angle and direction is opposite also has second cone angle, the other end of second cone angle is a circular shape, be followed successively by first circle, second circular arc, three-arc, this circular curve shape can avoid forging to produce superposition phenomenon, pressing die bottom cylindrical outer diameter equals to be used for the external diameter of the punching pin of punching, flatten the vertical height of mould bottom to the first cone angle peak, promptly the height of pressing die equals the height of forging.

Pressing mould of the present utility model is because similar to the forging shape on its structure, so in automobile axle driven pulley Forging Technology process, make the product two ends of forging be difficult for producing depression, and the mold integral tonnage is little, equipment investment is low, and floor space is little.

Description of drawings

Fig. 1 is the utility model automotive driven wheel forging profilograph;

Fig. 2 is the profile that the utility model flattens mould;

Fig. 3 is the installation drawing of pressing die of the present utility model and product.

The specific embodiment

Pressing mould of the present utility model, integral body is disc, have upper surface and lower surface, described upper surface is the plane, external force is applied to upper surface, described underside shape matches with product 7 shapes, has first a downward cone angle 2 from inside to outside in the lower surface circumferential outer edge, and its tapering is identical with the tapering of the outward flange downward direction of forging 7; Link to each other with first cone angle 2 and direction is opposite also has second cone angle 1, the other end of second cone angle 1 is a circular shape, be followed successively by first circular arc 3, second circular arc 4, three-arc 5, this circular curve shape can avoid forging to produce superposition phenomenon, flattening die bottom cylindrical outer diameter equals to be used for the external diameter of the punching pin of punching, flatten the vertical height of mould bottom to the first cone angle peak, promptly the height of pressing die equals the height of forging 7.

The tapering of described first cone angle 2 is 10.5 °;

The tapering of described second cone angle 1 is 15 °;

The radius of described first circular arc 3 is 8-12mm;

The radius of described second circular arc 4 is 30-50mm;

The radius of described three-arc 5 is 5-8mm.

Fig. 1 is an automobile axle driven pulley forging profilograph, and its bottom surface is the plane, is the conical surface above, and endoporus is a stepped hole, and big step has certain gradient.

Fig. 3 is the installation drawing of pressing mould of the present utility model and product.When flattening operation, product 7 is positioned on the hammering block 8, will flatten mould 6 and be placed on above the product 7, apply external force with pneumatic hammer, product 7 is pressed into required shape.

Claims

1. one kind flattens mould, integral body is disc, have upper surface and lower surface, described upper surface is the plane, it is characterized in that: described underside shape matches with forging (7) shape, has downward first cone angle (2) from inside to outside in the lower surface circumferential outer edge, its tapering is identical with the tapering of the outward flange downward direction of forging (7), link to each other with first cone angle (2) and direction is opposite also has second cone angle (1), the other end of second cone angle (1) is a circular shape, be followed successively by first circular arc (3), second circular arc (4), three-arc (5), flatten mould (6) bottom cylindrical outer diameter and equal to be used for the external diameter of the punching pin of punching, the height that flattens mould bottom to the vertical height of the first cone angle peak and be pressing die equals the height of forging (7).

2. pressing mould according to claim 1 is characterized in that: the tapering of described first cone angle (2) is 10.5 °.

3. pressing mould according to claim 1 is characterized in that: the tapering of described second cone angle (1) is 15 °.

4. pressing mould according to claim 1 is characterized in that: the radius of described first circular arc (3) is 8-12mm.

5. pressing mould according to claim 1 is characterized in that: the radius of described second circular arc (4) is 30-50mm.

6. pressing mould according to claim 1 is characterized in that: the radius of described three-arc (5) is 5-8mm.