CN102847862A - Low-pressure composite forging process for bearing ring - Google Patents

Abstract

The invention discloses a low-pressure composite forging process for a bearing ring, comprising cutting off, upsetting, pre-forming, punching, forming and separating. According to the invention, via change for the machining process, the free surface area of a workpiece during forging is increased by means of punching at first and then forming, thus reducing machining energy loss, prolonging the service life of the machined workpiece, decreasing production cost, and improving market competitiveness. The low-pressure composite forging process disclosed by the invention is simple, convenient in operation, easy in realization, and suitable for mass production.

Description

A kind of low-pressure duplex forging technique of race ring

Technical field

The present invention relates to a kind of thermal forging technology of workpiece, especially a kind of low-pressure duplex forging technique of race ring.

Background technology

Progress along with science and technology, the raising of industrialization degree, bearing is also more and more higher as using very general parts usage in the industry, present bearing processing is the jumping-up operation, forming process, punching operation, separation circuit, wherein forming process is airtight forging, need very large forming pressure, exist high to equipment requirement, the large shortcoming of undesirable production cost die life, therefore, develop new processing technology, reduce forming pressure, reduce equipment cost, minimizing is to the loss of mould, and enhancing productivity is the primary problem that solves in the Production of bearing industry.

Summary of the invention

Goal of the invention: the objective of the invention is provides a kind of technique simple in order to overcome the deficiencies in the prior art, low to the production equipment requirement, the Forging Technology of the race ring that the mould loss is little.

Technical scheme: in order to solve the problems of the technologies described above, the low-pressure duplex forging technique of a kind of race ring of the present invention, described technique may further comprise the steps

(a) cut off: prepare barred body Steel material to be processed, adopt the multistation high-speed upsetter bar to be cut into the cylinder of Len req;

(b) jumping-up: adopt the multistation high-speed upsetter described in the step (a) that the cylinder steel described in the step (a) are upset as flat material cake;

(c) preform: adopt the mold of the multistation high-speed upsetter described in the step (a) will expect that cake is forged into the goblet (3) of intermediate recess band gross weight (31), described mold cross-sectional area is less than the blank cross section;

(d) punching: adopt the multistation high-speed upsetter punching die described in the step (a) that the gross weight of goblet (3) (31) is swept away, make blank become the ring body of up/down perforation;

(e) be shaped: adopt the upsetter described in the step (a) to adopt shaping dies that ring body is forged into outer ring A(1) with inner ring B(2) combination;

(f) separation: adopt the upsetter described in the step (a) to adopt peel of mould with outer ring A(1) with inner ring B(2) separate.

Peel of mould in the described step (f) and inner ring B(2) external diameter of upper surface is identical.

Beneficial effect: compared with prior art, the invention has the advantages that: the present invention is by changing processing technology, thereby increase the free area minimizing power consumption of polymer processing that workpiece adds man-hour with the method that first punching shapes workpiece again, prolong the service life of processing work, reduce production costs, improve the market competitiveness, the present invention is by changing processing technology, and technique of the present invention is simple, and is easy to operate, be easy to realize, be suitable for producing in enormous quantities.

Description of drawings

Fig. 1 is the front view of race ring;

Fig. 2 is the bearing outer ring front view;

Fig. 3 is the bearing inner race front view;

Fig. 4 is the hypanthial front view of intermediate recess band gross weight;

Wherein: 1. outer ring A, 2. inner ring B, 3. goblet, 31. gross weights.

The specific embodiment

The present invention is described in further detail below in conjunction with drawings and Examples, should understand these embodiment and only be used for explanation the present invention and be not used in and limit the scope of the invention.

Embodiment 1

Shown in Fig. 1-4, it is that the 53.3mm overall diameter is the race ring of 103.3mm that wish is forged interior diameter, and Forging Technology is:

(a) preparatory process: prepare barred body Steel material to be processed, adopt the multistation high-speed upsetter that bar material cutting is become high 77.17mm, the bottom surface diameter is the cylinder of 46mm;

(b) jumping-up: adopt the upsetter described in the step (a) that the cylinder steel are upset as flat material cake, bottom surface diameter 84mm, high 25mm, this step needs 124 tons pressure;

(c) preform: adopt the mold of the multistation high-speed upsetter described in the step (a) will expect that cake is forged into the goblet 3 of intermediate recess band gross weight 31, described mold is the multidiameter shape, cross-sectional area is less than the blank cross section, the material cake is forged into the goblet 3 of intermediate recess band gross weight 31, this goblet internal diameter 54.09mm, external diameter 102.32mm highly is 20.36mm, Web thickness 6.91mm, this operation needs 625 tons pressure;

(d) punching: adopt the punching die of the multistation high-speed upsetter described in the step (a) that the gross weight 31 of goblet 3 is swept away, make blank become the ring body of up/down perforation, this ring body internal diameter 54.09mm, external diameter 102.32mm, highly be 20.36mm, this operation needs 19 tons pressure;

(e) be shaped: the shaping mold that adopts multistation high-speed upsetter described in the step (a), ring body is forged into the combination of outer ring A 1 and inner ring B 2, described combination, the internal diameter of inner ring B2 is 53.3mm, the external diameter of outer ring is 103.3mm, highly be 39mm, this operation needs 172 tons pressure;

(f) separate: adopt the multistation high-speed upsetter described in the step (a) to separate mold outer ring A 1 is separated with inner ring B 2, the interior diameter of outer ring A1 is 75.5mm, and race diameter is 103.3mm, highly is 19.5mm; The interior diameter of inner ring B2 is 53.3mm, and overall diameter is 75.5mm, highly is 24.8mm, and this operation needs 20 tons pressure.

Claims (2)

1. the low-pressure duplex forging technique of a race ring, it is characterized in that: described technique may further comprise the steps

(a) cut off: prepare barred body Steel material to be processed, adopt the multistation high-speed upsetter bar to be cut into the cylinder of Len req;

(b) jumping-up: adopt the multistation high-speed upsetter described in the step (a) that the cylinder steel described in the step (a) are upset as flat material cake;

(c) preform: adopt the mold of the multistation high-speed upsetter described in the step (a) will expect that cake is forged into the goblet (3) of intermediate recess band gross weight (31), described mold cross-sectional area is less than the blank cross section;

(d) punching: adopt the multistation high-speed upsetter punching die described in the step (a) that the gross weight of goblet (3) (31) is swept away, make blank become the ring body of up/down perforation;

(e) be shaped: adopt the upsetter described in the step (a) to adopt shaping dies that ring body is forged into outer ring A(1) with inner ring B(2) combination;

(f) separation: adopt the upsetter described in the step (a) to adopt peel of mould with outer ring A(1) with inner ring B(2) separate.

2. the low-pressure duplex forging technique of a kind of race ring according to claim 1 is characterized in that: the peel of mould in the described step (f) and inner ring B(2) external diameter of upper surface is identical.

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