CN104511557A

CN104511557A - Rod head and bearing bush forging method

Info

Publication number: CN104511557A
Application number: CN201310679087.5A
Authority: CN
Inventors: 陈国财
Original assignee: LIUZHOU GUOSHUN MECHANICAL MANUFACTURE Co Ltd
Current assignee: LIUZHOU GUOSHUN MECHANICAL MANUFACTURE Co Ltd
Priority date: 2013-12-14
Filing date: 2013-12-14
Publication date: 2015-04-15

Abstract

The invention discloses a rod head and bearing bush forging method and relates to the technical field of machinery manufacturing. The rod head and bearing bush forging method comprises the following steps of (A) blanking, namely using a band-sawing machine to saw round steel bars into round steel section blanks; (B) heating, namely using an intermediate frequency furnace to heat the round steel section blanks to be at forging temperature; (C) forming, namely using a forming die to form the heated round steel section blanks. The heating temperature of the round steel section blanks is controlled to be 1150 DEG C+/-50DEG C. The forming die is a rod head and bearing bush forming dies and comprises an upper die and a lower die, wherein a through hole is formed in the middle of the lower die, one end of a punch penetrates into the through hole to be connected with the lower die, and the other end of the punch is connected with a die handle. After the assembling end faces of the upper die and the lower die are combined in an abutting mode, a cavity identical to a formed forge piece in edge size and shape is formed between the assembling end faces of the upper die and the lower die. The problems of high rod head and bearing bush forging production cost, large environmental pollution, high in labor intensity and low working efficiency can be solved.

Description

The forging method of bar head and bearing shell

Technical field

The present invention relates to machinery manufacturing technology field, the forging method of especially a kind of bar head and bearing shell.

Background technology

Have a kind of bar head used in engineering machinery as shown in Figure 1, Figure 2 and Figure 3 and bearing shell at present, because specification is comparatively large, structure is more complicated; Following Railway Project is there is: 1, consumption is comparatively large in material consumption, and every part consumption is at 29 kilograms when adopting the forging of traditional open type Forging Technology; 2, product quality aspect, because used mould fails bar head and bearing shell endoporus to forge during forging, and there is overlap in upper and lower mould dislocation sometimes, and cause machining allowance large, streamline can not ensure on the other hand, affects the mechanical performance of bar head and bearing shell; 3, in production, when forging, noise is large, vibration is large, dust is large; Labor strength is large, needs number more simultaneously, at least wants more than 4 people; Therefore this forging mode production cost is high, and environmental pollution is large, the large and inefficiency of labour intensity.

Summary of the invention

The technical problem to be solved in the present invention is to provide the forging method of a kind of bar head and bearing shell, and it can solve bar head and bearing shell forging cost is high, and environmental pollution is large, the large and ineffective problem of labour intensity.

The technical scheme that technical solution problem of the present invention adopts is: the forging method of this bar head and bearing shell,

Comprise following operating procedure:

A, blanking: round steel bar is sawn into round steel section blank with band sawing machine;

B, heating; With heating furnace by round steel section blank heating to forging and pressing temperature;

C, shaping; With shaping mould by shaping for the round steel section blank heated;

Described heating furnace is intermediate frequency furnace; Described steel section blank heating temperature controls at 1150 ± 50 DEG C; Described shaping mould is bar head and bearing shell mould, and it includes upper die and lower die, offers through hole in the middle part of described counterdie, and drift one end penetrates described through hole and is connected with described counterdie, and the described drift other end and mould are being connected; After described patrix and described counterdie matched moulds end face support and close, form the edge size and shape shape chamber identical with shaping forging between which.

Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:

1, the present invention is adopted to forge bar head and bearing shell, material consumption is few, every part consumption only has 16 kilograms, 29 kilograms that consume than adopting open type FMT to carry out to forge every part, reduce consumption about 45%, on the other hand because bar head and bearing shell endoporus are extrusion molding and non-trimming, therefore surplus is few; Be beneficial to processing; And streamline is reasonable, product quality is easy to ensure, thus reduces production cost.

2, forging noise is little, friction to adopt the present invention to carry out bar head and bearing shell, without dust, decreases environmental pollution.

3, adopt the present invention to carry out forging to bar head and bearing shell and need personnel few, only need 2 people, and more convenient to operate, labor strength is little, and to add man-hour time saving and energy saving, improves operating efficiency.

4, adopt present device small investment, tonnage greatly declines, investment minimizing about 30%.

5, energy resource consumption is little, can economize energy 20-30%.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention bar head and bearing shell front view.

Fig. 2 is the generalized section along L-L hatching line in Fig. 1.

Fig. 3 is the generalized section along M-M hatching line in Fig. 1.

Fig. 4 is that bar head of the present invention and bearing shell forming die structure assemble schematic diagram.

Fig. 5 is patrix schematic front view in bar head and bearing shell mould.

Fig. 6 is patrix schematic top plan view in bar head and bearing shell mould.

Fig. 7 is the generalized section along G-G hatching line in Fig. 5.

Fig. 8 is H place enlarged diagram in Fig. 6.

Fig. 9 is counterdie schematic front view in bar head and bearing shell mould.

Figure 10 is counterdie schematic top plan view in bar head and bearing shell mould.

Figure 11 is the generalized section along D-D hatching line in Fig. 9.

Figure 12 is E place enlarged diagram in Figure 10.

Figure 13 is drift schematic diagram in bar head and bearing shell mould.

Figure 14 be in bar head and bearing shell mould mould schematic diagram.

Number in the figure is expressed as: 1, patrix; 2, counterdie; 3, drift; 4, mould handle; 5, shaping forging.

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, the invention will be further described:

Fig. 1, Fig. 2 and Fig. 3 are the actual size structure charts of workpiece bar head and the bearing shell that will forge.This bar head and bearing shell forge the bar head that adopts and bearing shell mould as shown in Figure 4, it includes patrix 1 and counterdie 2, offers through hole in the middle part of counterdie 2, and drift 3 one end penetrates through hole and is connected with counterdie 2, drift 3 other end is threaded 4 with mould, and mould the structure of 4 as shown in figure 14; After patrix 1 and the 2-in-1 mould end face of counterdie support and close, form the edge size and shape shape chamber identical with shaping forging 5 between which; The shaping forging 5 of the present embodiment is bar head and bearing shell forging; The structure of patrix 1 is as shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the shape chamber identical with one section of edge shape size of bar head and bearing shell is offered in the middle part of the matched moulds end face of patrix 1, after counterdie 2 is connected with drift 3, their land area offers the shape chamber identical with another section of edge shape size of bar head and bearing shell; The structure chart of counterdie is as shown in Fig. 9, Figure 10, Figure 11 and Figure 12, and drift 3 one end has protuberance, and the other end offers screw thread, and the structure of drift 3 as shown in figure 13.

The forging method of this bar head and bearing shell, comprises following operating procedure:

A, blanking: with band sawing machine, round steel bar is sawn into Φ 100 × 250 round steel section blank, requires that saw kerf must not have deflection;

B, heating; Φ 100 × 250 round steel section blank is put into 750W intermediate frequency heating, and heating and temperature control is at 1150 ± 50 DEG C;

C, shaping; The round steel section blank heated is put into the shape chamber being contained in above-mentioned bar head on 800T hydraulic press and bearing shell mould; Primer fluid press, with bar head and bearing shell mould by the bar head of specification needed for compressing for the round steel section blank heated namely obtaining shown in Fig. 1, Fig. 2 and Fig. 3 and bearing shell forging.

Claims

1. a forging method for bar head and bearing shell, comprises following operating procedure:

It is characterized in that: described heating furnace is intermediate frequency furnace; Described steel section blank heating temperature controls at 1150 ± 50 DEG C; Described shaping mould is bar head and bearing shell mould, it includes patrix (1) and counterdie (2), described counterdie (2) middle part offers through hole, and drift (3) one end penetrates described through hole and is connected with described counterdie (2), and described drift (3) other end is connected (4) with mould; After described patrix (1) and described counterdie (2) matched moulds end face support and close, form the edge size and shape shape chamber identical with shaping forging (5) between which.