CN211638191U

CN211638191U - Gear hot forging die

Info

Publication number: CN211638191U
Application number: CN201922317410.XU
Authority: CN
Inventors: 高峰; 张贵宏; 苏海华
Original assignee: Xingcheng Powder Metallurgy Co ltd
Current assignee: Xingcheng Powder Metallurgy Co ltd
Priority date: 2019-12-22
Filing date: 2019-12-22
Publication date: 2020-10-09
Anticipated expiration: 2029-12-22

Abstract

The utility model relates to a mould specifically is a gear hot forging mould for forge freight train middle axle differential mechanism's initiative roller gear. The die comprises an upper die holder and a lower die holder, wherein the bottom of the upper die holder is provided with an upper die core, an upper stress ring is sleeved on the outer side of the upper die core, the upper part of the lower die holder is provided with a lower die core, the lower stress ring is sleeved on the outer side of the lower die core, an upper die sleeve is arranged between the upper die core and the upper stress ring, and a lower die sleeve is arranged between the lower die core and the lower stress ring; the upper mold core and the upper mold sleeve, and the lower mold core and the lower mold sleeve are movably connected respectively. The utility model discloses the preparation time is short, and is small, reduces manufacturing cost, and loading and unloading mould saves time, improves work efficiency, and manufacturing cost obviously reduces.

Description

Gear hot forging die

Technical Field

The utility model relates to a mould specifically is a gear hot forging mould for forge freight train middle axle differential mechanism's initiative roller gear.

Background

The die used for producing the die forging in the hot forging manufacturing process is called a hot forging die. Specifically, the heated blank is put into a hot forging die to be pressurized, so that the blank is changed into a forge piece according to the shape of a die cavity of the hot forging die, and the tool is necessary for forging production. Because the hot forging production efficiency is high, the replacement is convenient, the repair time is saved, and the drive cylindrical gear of the axle differential in the first steam release J6H is forged and produced by adopting the hot forging die. A steam-releasing J6H rear drive axle is composed of central primary speed reducer and differential. In contrast, the structure of the medium drive axle is complex, the medium axle is provided with two differentials, one is an inter-wheel differential, the left wheel and the right wheel of the automobile automatically have a differential function when the automobile turns, when the automobile runs on a high and low uneven road surface, the instantaneous rotating speeds of the medium axle and the rear axle are different to adapt to the requirement of the road on the rotation of the wheels, and the driving cylindrical gear is an important part. The demands on the die during the forging of the product are relatively high. The traditional mould is long in time-consuming in manufacturing, large in size and time-consuming and labor-consuming in assembling and disassembling the mould.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a gear hot forging mould, when forging the initiative roller gear of axle differential mechanism in the freight train, can reduce mould manufacturing cost.

The utility model provides a technical scheme that its technical problem adopted is:

a gear hot-forging die comprises an upper die holder and a lower die holder, wherein an upper die core is arranged at the bottom of the upper die holder, an upper stress ring is sleeved on the outer side of the upper die core, the upper die core is arranged at the upper part of the lower die holder, a lower stress ring is sleeved on the outer side of the upper die core, an upper die sleeve is arranged between the upper die core and the upper stress ring, and a lower die sleeve is arranged between the lower die core and the lower stress ring; the upper mold core and the upper mold sleeve, and the lower mold core and the lower mold sleeve are movably connected respectively.

Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, beneficial effect is:

the mould preparation time is short, and is small, reduces manufacturing cost, and loading and unloading mould labour saving and time saving improves work efficiency, reduction in production cost.

Further, the utility model discloses an optimization scheme is:

the upper end of the upper mold core is provided with a flange structure, and the upper end of the inner hole of the upper mold sleeve is provided with a stepped structure matched with the flange structure.

The upper die sleeve is fixedly connected with the upper stress ring, and the lower die sleeve is fixedly connected with the lower stress ring.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

fig. 2 is a schematic overall structure diagram of an embodiment of the present invention;

in the figure, an upper die base 1; an upper mold core 2; an upper die sleeve 3; an upper stress ring 4; an upper die flange 5; a lower die holder 6; a lower mold core 7; a lower mold sleeve 8; a lower stress ring 9; a lower die flange 10; product 11.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 2, the gear hot-forging die is used for forging a driving cylindrical gear of a truck intermediate axle differential, and comprises an upper die base 1, an upper die core 2, an upper die sleeve 3, an upper stress ring 4, an upper pressing die flange 5, a lower die base 6, a lower die core 7, a lower die sleeve 8, a lower stress ring 9 and a lower pressing die flange 10, wherein the upper die core 2 is installed at the bottom of the upper die base 1, the upper die sleeve 3 is sleeved on the outer circumferential surface of the upper die core 2, the upper end of the upper die core 2 is provided with a flange structure, and the upper end of an inner hole of the upper die sleeve 3 is provided with a stepped structure matched with the flange structure. Stress ring 4 is installed to the outer circumference cover of going up mould cover 3, goes up mould cover 3 and last stress ring 4 fixed connection, and the upper end processing of going up stress ring 4 has the flange structure, and last moulding-die flange 5 presses the lower surface at this flange structure, and last moulding-die flange 5 passes through the bolt and is connected with upper die base 1. The upper part of the lower die base 6 is provided with a lower die core 7, a lower die sleeve 8 is sleeved on the outer circumferential surface of the upper die core 7, and a lower stress ring 9 is sleeved on the outer circumferential surface of the lower die sleeve 8. The lower die sleeve 8 is fixedly connected with the lower stress ring 9, a flange structure is processed at the lower end of the lower stress ring 9, the lower die pressing flange 10 is arranged on the upper surface of the flange structure, and the lower die pressing flange 10 is connected with the lower die holder 6 through bolts. The upper mold core 2 is movably connected with the upper mold sleeve 3, and the lower mold core 7 is movably connected with the lower mold sleeve 8.

Firstly, turning an upper die sleeve 3, an upper stress ring 4, a lower die sleeve 8 and a lower stress ring 9, using die steel 5CrMnMo for the upper die sleeve 3 and the lower die sleeve 8, using No. 45 steel for the upper stress ring 4 and the lower stress ring 9, turning an upper die core 2 and a lower die core 7, and carrying out heat treatment on the processed die cores; and carrying out electro-corrosion processing on the movable die core after heat treatment. The upper die sleeve 3, the upper stress ring 4, the die sleeve 8 and the lower stress ring 9 are cold-assembled, the assembled upper die sleeve 3 is arranged in a positioning opening of the upper die holder 1 and is fixed, and the lower die sleeve 8 is arranged in a positioning opening of the lower die holder 6 and is fixed; and respectively installing the upper die core 2 and the lower die core 7 in the die sleeve 3 and the lower die sleeve 8, and finishing die filling. The die change is convenient, the manufacturing time is short, and the manufacturing cost is saved. The mold sleeve can be repeatedly used after being manufactured, an integral mold is not required to be manufactured, the manufacturing time is reduced, the mold core can be directly manufactured after the mold core is worn, the mold core can be used after being replaced, the mold manufacturing period is shortened by about 3 days, and the mold replacement time is shortened by 1 hour; compared with the original structure, the cost can be saved by 1 ten thousand yuan, and the production cost is reduced.

The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all structural equivalents made by using the contents of the specification and drawings are included in the scope of the present invention.

Claims

1. The utility model provides a gear hot forging mould, includes the upper die base, the die holder, and the bottom of upper die base is equipped with the mold core, goes up the outside of stress ring suit at last mold core, and the upper portion of die holder is equipped with down the mold core, and the mold core outside, its characterized in that are down sheathed to the stress ring: an upper die sleeve is arranged between the upper die core and the upper stress ring, and a lower die sleeve is arranged between the lower die core and the lower stress ring; the upper mold core and the upper mold sleeve, and the lower mold core and the lower mold sleeve are movably connected respectively.

2. A gear hot forging die as claimed in claim 1, wherein: the upper end of the upper mold core is provided with a flange structure, and the upper end of the inner hole of the upper mold sleeve is provided with a stepped structure matched with the flange structure.

3. A gear hot forging die as claimed in claim 1, wherein: the upper die sleeve is fixedly connected with the upper stress ring, and the lower die sleeve is fixedly connected with the lower stress ring.