CN2900026Y

CN2900026Y - Creeper tread precision forging mould

Info

Publication number: CN2900026Y
Application number: CN 200620006773
Authority: CN
Inventors: 谷志飞
Original assignee: Inner Mongolia First Machinery Group Corp
Current assignee: Inner Mongolia Firmaco Flourish Forging Co Ltd
Priority date: 2006-03-09
Filing date: 2006-03-09
Publication date: 2007-05-16
Anticipated expiration: 2016-03-09

Abstract

The utility model belongs to forging field, in particular relates to a pedrail plate precision-forging mould. The utility model comprises a punch, an upper concave mould, a flat and a lower concave mould. The device uses the mould extrusion structure to form the pedrail plate precisely and reduces device tons needed, and enhances the utilization rate and forging quality. The adoption of the utility model simplifies the forging procedure and the forging load could be reduced by 50 percent and material utilization ratio could reach 95 percent by comparing with normal procedure. Therefore, the device saves material and prolongs the service life of the mould.

Description

The creeper tread precision forging die

Technical field:

The utility model belongs to the forging field, relates to a kind of creeper tread precision forging die specifically.

Background technology:

Creeper tread is an of paramount importance part in the tracked armored vehicle walking mechanism, because therefore its material forming poor-performing, complex-shaped and serviceability is harsh has determined that creeper tread Forging Technology difficulty is very big.This forging is complex-shaped, geometric accuracy requires high (especially intermediate thin floor dimension precision requirement is very high) and row position tolerance height, the Forging Technology performance is very poor, tissue is produced difficulty, problem such as have percent defective, defective products rate height in actual production, the forging die life-span is low and stock utilization is low.Therefore, develop this type of part forming better performances, the higher precision forging process method of forming quality quite is subjected to domestic and international attention.

At present, this forging mainly adopts conventional open die forging, impressing forging technology to forge, and four work steps such as process is flattened, blocking, finish-forging, side cut are shaped.For example adopt open die forging, impressing forging technology on the 250MN friction press,---open type blocking---open type finish-forging---is cut edge and is waited four work steps to be shaped through flattening.There are shortcomings such as stock utilization is low, forging cost height, the forging ' s block dimension precision is low, the forging die life-span is low in this technology.

Summary of the invention:

The purpose of this utility model provides a kind of by the mould extrusion structure, realizes the accurate excellent suitability for press forming of creeper tread, reduces the equipment needed thereby tonnage, improves a kind of creeper tread precision forging die of stock utilization and forging quality, to overcome above-mentioned deficiency.

The purpose of this utility model is realized by following technical scheme:

A kind of creeper tread precision forging die comprises upper cavity die, lower cavity die, drift, and be characterized in: upper cavity die is provided with groove, and lower cavity die is provided with respective slot, and drift and last lower cavity die form enclosure space, and drift pushes flat material and realizes that creeper tread forges precision form.

Adopt a kind of creeper tread precision forging die of the utility model, do not form overlap, simplified forging process, reduced deformation force, compare forging load with routine and reduce about 50%, saved material, stock utilization can reach more than 95%, the utility model not only can reach high-quality, when joint and energy-conservation effect, the service life that can also improve mould significantly.

Description of drawings:

Fig. 1 is the utility model punch structure schematic diagram;

Fig. 2 is the utility model fovea superior mould structure schematic diagram;

Fig. 3 is the flat material structural representation of the utility model.

Fig. 4 is the recessed mould structure schematic diagram of the utility model;

Fig. 5 is the structural representation of creeper tread after the utility model moulding.

The specific embodiment:

Embodiment:

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

The utility model, is made up of drift 1, upper cavity die 2, flat material 3, lower cavity die 4, creeper tread 5 to shown in Figure 3 Fig. 1, designs heat forging drawing according to product parts figure earlier, and calculates required blank dimension (diameter and length); The extrusion molding forging die that the back can divide lower cavity die, drift to form in the design according to principle of the present utility model and method; Power energy parameters such as an extruding force when scheming to calculate distortion and a mould power according to above two, and select pressing mold power load mode and Type of equipment; Select suitable mold materials and heat treatment mode at last, and select the suitable lubricant material and the preheating and the type of cooling of mould, at first round bar is flattened, then flat material 3 is put into lower cavity die 4, right upper cavity die 2 and lower cavity die 4 matched moulds, the last flat material 3 of drift 1 descending extruding, metal are forced to flow and are full of die cavity, finish creeper tread 5 whole forging processes.

Because the mode that adopts the middle floor of upper punch squeeze tracks plate forging to force metal flow to be full of die cavity is shaped, and the area of floor only is 1/3 of a whole creeper tread frontal area, the load area of mould reduces greatly, therefore the required equipment tonnage that is shaped also significantly reduces, it only is about 50% of conventional Forging Technology equipment needed thereby tonnage, this mould structure and mode of texturing force metal to flow to the die cavity depths under the three-dimensional compressive stress state, and do not form overlap, therefore required deformation force is little, the metal flow performance is good, forging forming dimensional accuracy height especially is beneficial to two of creeper treads with complicated shape and connects end face forming.Because in the forming process, last lower cavity die and intermetallic phase are little to rubbing, the drift of simple shape is the parts of main taking up wear, therefore not only can significantly improve the lower cavity die life-span, can also reduce mould repair expense.This mould can reach and reduce equipment needed thereby tonnage, raising forging ' s block dimension precision and the purpose of die life.

Claims

1, a kind of creeper tread precision forging die comprises upper cavity die, lower cavity die, drift, and be characterized in: upper cavity die is provided with groove, and lower cavity die is provided with respective slot, and drift and last lower cavity die form enclosure space.