CN204867258U - Forged composite mold of rear axle driving gear blank heat in automobile - Google Patents

Abstract

The utility model discloses a forged composite mold of rear axle driving gear blank heat in automobile, including last mould, go up die sleeve, lower mould, down the mold core, down the mold core cover, down the module, down mold core ejector pin, lower mould backing plate, down the die sleeve form. It comprises last mould and last die sleeve wherein to go up the mould part. The lower mould is partial to comprise lower mould, lower mold core, lower mold core cover, lower module, lower mold core ejector pin, lower mould backing plate, lower die sleeve. Lower mould part lower mould be wolfram steel alloy material, guarantee first axle journal size, driving gear circular conical surface size is responsible for to the lower mould upper end. The lower mould adopt the composite mold form, the second axle journal is responsible for guaranteeing the size by mold core down, the lower mold core outside is connected by mold core cover protection down, and the mold core cover outside also is equipped with T shape step and is protected spacingly by the lower die sleeve built -up connection who has T shape step, lower die sleeve down. The utility model belongs to the forging material is practiced thrift to no overlap forge hot moulded die, improves the forging mould life -span, the production cost is obviously reduced.

Description

The combination die of rear axle in vehicle driving gear blank warm and hot forging

Technical field

The utility model belongs to hot forged metal field shaping technique, relates to a kind of for automobile axle driving gear part blank non-trimming warm and hot forging mould.

Background technology

At present, the production method of automobile axle driving gear part is: take round steel as raw material, through blanking, forging base, die forging, obtain the blank with back axle driving tooth gear member adjoining dimensions, then after heat treatment, the processing of rough turn, finish turning, obtain automobile primary moving gear part, in contour forging technique, need the mould using special shape to carry out die forging base; But a lot of factory now, the Design of Dies used is unreasonable, mostly also continue to use old-fashioned open type Forging Technology, produce forging flash, need to increase process equipment cutting edge, the blank that die forging obtains and the External Shape that will manufacture differ greatly, and increase machining man-hour that is rough turn, finish turning processing, raw material and energy waste are very large.

Utility model content

The utility model technical issues that need to address overcome the deficiencies in the prior art, provides a kind of energy non-trimming hot forged mould, to save forging material, improve the forge die life-span; Reduce product cost.

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

Design a kind of novel non-trimming forge hot assembling die for back axle driving gear shaft member blank forging, will a kind of assembling die with the blank of back axle driving tooth gear member profile and adjoining dimensions that can forge accurately, simply and fastly be provided.Described hot-forging die comprises patrix, Upper Die-sleeve, counterdie, lower mold core, lower module, lower mold core push rod, counterdie backing plate, lower die-sleeve; Wherein part of the upper die is made up of patrix and Upper Die-sleeve; Part of the lower die is made up of counterdie, lower mold core, counterdie core retainer plate, lower module, lower mold core push rod, counterdie backing plate, lower die-sleeve; Described lower module (6) adopts assembling die mode to be connected by lower die-cushion (9) with lower mold core (7), and by lower die-sleeve (9) Global Macros in addition in outside;

Described patrix is the manufacture of wolfram steel material, and patrix is provided with T-shaped step so that change and location; Patrix contains all sizes of the active flank of tooth of upper end, and patrix and counterdie (3) are demarcated and be located at the top of middle part the first axle journal;

Described counterdie is tungsten steel alloy material, and be responsible for guarantee first journal size, driving gear lower end taper seat size is responsible in counterdie upper end;

Described counterdie adopts combination die form, and the second axle journal is responsible for ensureing size by lower mold core, is connected outside lower mold core by the protection of counterdie core retainer plate;

Driving gear shaft-like work bottom is made up of three sections of axle journal straight part;

Counterdie core retainer plate (5) outside is connected by the lower die-sleeve (9) with T-shaped step and is connected, and lower die-sleeve (9) is also provided with T-shaped step and is protected spacing;

Described driving gear shaft the 3rd axle journal is bottom responsible for guarantee by lower module (6) internal diameter size, lower module (6) is also tungsten alloy material manufacture, counterdie backing plate (8) and the lower mold core push rod (7) be placed in the middle of counterdie backing plate (8), also be that tungsten alloy is made, lower mold core push rod (7) is simultaneously as a part for the push rod of falling tup, controlled by the post rod mechanism of forging die lower end, finally by post rod mechanism, the finished product driving gear shaft after lower mold core push rod (7) and forge hot is ejected together after hot-forging forming;

The outside that the same also extension of described lower die-sleeve (9) is located at counterdie backing plate (8) is attached thereto and connects, and the periphery of lower die-sleeve also has the base large inertia foundation of hot-forging die.

Die design schemes: for Dongfeng Auto Company 469,485 vehicle bridge driving gear shaft:

Fig. 2 mould is the usual design of current automobile industry forging vehicle bridge driving gear shaft.This die form belongs to open die forging, impressing forging.Forging products has overlap, needs and cuts overlap operation.

Fig. 1 is that the vehicle bridge driving gear shaft after improving becomes swage die.This mould belongs to closed die forging (non-trimming forging) following advantage:

1, be saved overlap material; Two is the labour cost and the devices consume that reduce trimming.

2, adopt closed forging, avoid the formation of overlap, saved forging material.

3, lower module adopts assembling die by lower die-cushion and lower mold core.

Wherein mainly solve following technological difficulties:

A, lower mold core are stressed large, yielding, should select red hardness good tungsten alloy steel mold material;

When B, discharging, adopt push rod immediate roof lower push rod and workpiece, forging depanning is fast, forging comparatively fast departs from lower mold core.Above 2 improve die life and have saved expensive mold materials.

The beneficial effects of the utility model are:

Forge hot non-trimming assembling die structure described in the utility model is simple, easy to operate; The blank with sprocket gear shaft member profile and adjoining dimensions can be forged accurately, simply and fastly, reduce difficulty that is rough turn, finish turning processing, improve production efficiency, reduce production cost.

Accompanying drawing explanation

Fig. 1 is non-trimming forging die structure chart of the present utility model;

Fig. 2 is the structural representation of existing overlap forging die;

Fig. 3 is non-trimming workpiece schematic diagram of the present utility model;

In Fig. 1: 1, patrix; 2, Upper Die-sleeve; 3, counterdie; 4, lower mold core; 5, counterdie core retainer plate; 6, lower module; 7, lower mold core push rod; 8, counterdie backing plate; 9, lower die-sleeve; 10, workpiece;

In Fig. 2: 1, patrix; 2, Upper Die-sleeve; 3, counterdie; 4, lower mold core; 5, counterdie core retainer plate; 6, lower module; 7, lower mold core push rod; 8, counterdie backing plate; 9, lower die-sleeve; 10, overlap;

Detailed description of the invention

Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail.

Described part of the upper die is made up of patrix 1 and Upper Die-sleeve 2, and described part of the lower die comprises counterdie 3, lower mold core 4, counterdie core retainer plate 5, lower module 6, lower mold core push rod 7, counterdie backing plate 8, lower die-sleeve 9 formed.Wherein patrix 1 is the manufacture of tungsten steel alloy material, and patrix 1 makes T-shaped step so that change and location needs.Patrix 1 contains the active rotation flank of tooth tangible the size of upper end, and patrix 1 and counterdie 3 are demarcated and be located at the top of middle part the first axle journal.

Described part of the lower die wherein counterdie 4 is tungsten steel alloy materials, and be responsible for guarantee first journal size, driving gear lower end taper seat size is responsible in counterdie 4 upper end.Described driving gear shaft-like work bottom is made up of three sections of axle journal straight part.Counterdie 3 adopts combination die form; second axle journal is responsible for ensureing size by lower mold core 4; be connected by counterdie core retainer plate 5 protection outside lower mold core 4, and connected by the lower die-sleeve 9 with T-shaped step outside counterdie core retainer plate 5 and be connected, same lower die-sleeve 9 is also provided with T-shaped step and is protected spacing.

Described driving gear shaft the 3rd axle journal is bottom responsible for guarantee by lower module 6 internal diameter size, lower module 6 is also tungsten alloy material manufacture, be exactly finally as lowermost counterdie backing plate 8, be placed on the lower mold core push rod 7 in the middle of counterdie backing plate 8 in addition, also be that tungsten alloy is made, this lower mold core push rod 7 is simultaneously as a part for the push rod of falling tup, controlled by the post rod mechanism of forging die lower end, finally by post rod mechanism, lower mold core push rod 7 is ejected together with the finished product driving gear shaft after forge hot after hot-forging forming.

What described lower die-sleeve 9 was same also extend, and the outside being located at counterdie backing plate 8 is attached thereto connects, and the periphery of lower die-sleeve also has the base large inertia foundation of hot-forging die.

Economic benefit calculation:

The production capacity producing 150000 by company per year calculates.

1, the forging shown in Fig. 1 will reduce overlap material about 0.8 kilogram.Pinion steel 40Cr material price 6 yuan/kilogram, saves 0.8 × 6 × 150,000=720,000 yuan every year.

2, labour cost is reduced shown in Fig. 1: class produces 400, per tour 120 yuan/people.

By 150,000 labour cost: 150,000/400 × 120=4.5 ten thousand yuan.

3, the equipment electricity charge: 315 tons of punch press power 37KW, each class about: 37 (KW) × 8 (hour) × 0.7 (unit/KWH)=207.2 yuan.150000 electricity charge: 150,000/400 × 207.2=7.77 ten thousand yuan.

4, maintenance of equipment and depreciation of equipment are about: depreciation cost 50,000 yuan, maintenance, maintenance cost 20,000.

Closed molds after improvement can be saved every year: 72+4.5+7.77+7=91.27 ten thousand yuan.(every part saves 6.08 yuan)

In sum: driving gear shaft non-trimming forging mold remarkable in economical benefits.This die design schemes can extensively application in the industry.

The above, be only the utility model embodiment, therefore the scope of the utility model enforcement can not be limited with this, namely the equivalence change done according to the restriction of the utility model claim and description and claims with modify, all should still belong in scope that the utility model patent contains.

Claims (1)

1. a combination die for rear axle in vehicle driving gear blank warm and hot forging, is characterized in that,

The combination die of described rear axle in vehicle driving gear blank warm and hot forging comprises patrix, Upper Die-sleeve, counterdie, lower mold core, lower module, lower mold core push rod, counterdie backing plate, lower die-sleeve; Part of the upper die is made up of patrix and Upper Die-sleeve; Part of the lower die is made up of counterdie, lower mold core, counterdie core retainer plate, lower module, lower mold core push rod, counterdie backing plate, lower die-sleeve; Described lower module (6) adopts assembling die mode to be connected by lower die-cushion (9) with lower mold core (7), and by lower die-sleeve (9) Global Macros in addition in outside;

Described patrix is the manufacture of wolfram steel material, and patrix is provided with T-shaped step so that change and location; Patrix contains all sizes of the active flank of tooth of upper end, and patrix and counterdie (3) are demarcated and be located at the top of middle part the first axle journal;

Described counterdie is tungsten steel alloy material, and be responsible for guarantee first journal size, driving gear lower end taper seat size is responsible in counterdie upper end;

Described counterdie adopts combination die form, and the second axle journal is responsible for ensureing size by lower mold core, is connected outside lower mold core by the protection of counterdie core retainer plate;

Driving gear shaft bottom is made up of three sections of axle journal straight part;

Counterdie core retainer plate (5) outside is connected by the lower die-sleeve (9) with T-shaped step and is connected, and lower die-sleeve (9) is also provided with T-shaped step and is protected spacing;

Described driving gear shaft the 3rd axle journal is bottom responsible for guarantee by lower module (6) internal diameter size, lower module (6) is also tungsten alloy material manufacture, counterdie backing plate (8) and the lower mold core push rod (7) be placed in the middle of counterdie backing plate (8), also be that tungsten alloy is made, lower mold core push rod (7) is simultaneously as a part for the push rod of falling tup, controlled by the post rod mechanism of forging die lower end, by post rod mechanism, the finished product driving gear shaft after lower mold core push rod (7) and forge hot is ejected together after hot-forging forming;

The outside that the same also extension of described lower die-sleeve (9) is located at counterdie backing plate (8) is attached thereto and connects, and the periphery of lower die-sleeve also has the base large inertia foundation of hot-forging die.