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Air compressor crankshaft upset-forging method and die

An air compressor and upsetting technology, which is applied in the direction of forging/pressing/hammering machinery, mechanical equipment, manufacturing tools, etc., can solve the problem of large machining allowance, damage to the fiber streamline of forging connecting rod journal, poor service strength, etc. problem, to achieve the effect of small margin, saving material and processing cost, and excellent comprehensive performance

Inactive Publication Date: 2018-05-25
LIAONING 518 INTERNAL COMBUSTION ENGINE FITTINGS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The air compressor crankshaft has two connecting rod journals in opposite directions between the two main shafts, and a crank arm between the two connecting rod journals. The forging production of such products is generally produced by free forging. The journal and the adjacent crank arm are integrally forged to form a square structure. The shape and size of the crank journal are obtained by machining, and the machining allowance is very large. In addition, the fiber streamline of the forging connecting rod journal is destroyed during machining. poor strength

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  • Air compressor crankshaft upset-forging method and die
  • Air compressor crankshaft upset-forging method and die
  • Air compressor crankshaft upset-forging method and die

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Embodiment Construction

[0013] The present invention is specifically described below in conjunction with accompanying drawing, as Figure 1-Figure 4 As shown, during the initial forging and upsetting of the present invention, the heated blank is put into the mold, the upper die 3 in the middle of the upsetting forging and the lower die 4 in the middle of the upsetting forging in the initial forging hold the second connecting rod journal of the crankshaft and move in the upper part Under the action of the device, the second connecting rod neck is pushed downward to produce bending deformation, and at the same time, the first initial forging and upsetting horizontal upper die 2, the first initial forging and upsetting horizontal lower die 1, and the second initial forging and upsetting horizontal upper die 5 Under the action of the horizontal motion device, the second initial forging horizontal lower die 6 relatively moves horizontally to carry out upsetting deformation. Forging and upsetting horizonta...

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Abstract

The invention discloses an air compressor crankshaft upset-forging method and a die. The air compressor crankshaft upset-forging method comprises the two steps of primarily forging and finally forging. During primary upset-forging, a primary upset-forging middle upper die and a primary upset-forging middle lower die enclasp a second rod journal of a crankshaft, the rod journal is pushed downwardsto produce bending deformation under the action of an upper movement device, and meanwhile, a first primary upset-forging horizontal upper die and a first primary upset-forging horizontal lower die, as well as a second primary upset-forging horizontal upper die and a second primary upset-forging horizontal lower die oppositely move horizontally under the action of a horizontal movement device, sothat upset-forging deformation is carried out. The air compressor crankshaft upset-forging method provided by the invention has the advantages that all-fiber forging of the crankshaft can be realized,a fiber flow line of a forging piece is distributed along with the journal of the crankshaft, an excellent comprehensive performance is realized, rod journal working allowances are uniformly distributed along a radial direction of the journal and are less, and the materials and the processing cost are saved.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a crankshaft upsetting method and a die. Background technique [0002] The air compressor crankshaft has two connecting rod journals in opposite directions between the two main shafts, and a crank arm between the two connecting rod journals. The forging production of such products is generally produced by free forging. The journal and the adjacent crank arm are integrally forged to form a square structure. The shape and size of the crank journal are obtained by machining, and the machining allowance is very large. In addition, the fiber streamline of the forging connecting rod journal is destroyed during machining. Poor strength. Contents of the invention [0003] The purpose of the present invention is to design an upsetting die for the crankshaft of an air compressor, which can realize the full-fiber forging of the crank throw, so that the fiber streamline of the forging is distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/08B21J13/02
CPCB21J13/02B21K1/08
Inventor 焉永才邓军江吴丽萍李春阳
Owner LIAONING 518 INTERNAL COMBUSTION ENGINE FITTINGS
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