A method for manufacturing powder metallurgy gears

A powder metallurgy and gear manufacturing technology, applied in the field of gear manufacturing, can solve the problems of scratches on the outer wall of the gear, inability to fix the gear, low practicability of the fixture, etc., and achieve the effect of ensuring cleanliness, reliable fixing strength and increasing oil immersion effect.

Active Publication Date: 2020-07-24
圣航粉末冶金河北有限公司
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  • Claims
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Problems solved by technology

[0003] Existing gear oil immersion usually uses the pressed gears to be directly placed in the oil for soaking; however, directly placing the gears in the oil will easily cause the gears to collide with each other and cause damage to the outer wall of the gears; Solid particles are difficult to remove and are easy to mix with oil, resulting in a decrease in the cleanliness of the oil. Particles inside the oil are likely to cause scratches on the outer wall of the gear; and the existing clamps for fixing gears are low in practicability and cannot be fixed for gears with various apertures , it is easy to cause gear damage during the process of fixing the gear

Method used

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  • A method for manufacturing powder metallurgy gears
  • A method for manufacturing powder metallurgy gears
  • A method for manufacturing powder metallurgy gears

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Embodiment Construction

[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0030] Such as Figure 1 to Figure 5 As shown, a powder metallurgy gear manufacturing method, specific powder metallurgy gear manufacturing steps are as follows:

[0031] S1. Press forming: send the mixed material that has been prepared into the forming mold, and press it into a gear blank;

[0032] S2, heating and sintering: put the gear blank pressed in step S1 into a vacuum sintering furnace for sintering;

[0033] S3, oil immersion and draining: put the gear blanks sintered in step S2 into the oil immersion equipment to complete the oil immersion treatment, and turn over the ge...

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Abstract

The invention provides a manufacturing method for a powder metallurgical gear. Manufacturing for the powder metallurgical gear is completed through the cooperation of a forming die, a vacuum sinteringfurnace, oil immersion equipment and the like; and the following problems are solved: the existing oil immersion for gears is mostly directly placing the pressed-formed gears in oil and carrying outimmersion, however, manual collision among the gears is easily caused by directly placing the gears in the oil, so that the outer walls of the gears are broken; moreover, solid particulate matters existing on the surfaces of the directly-placed gears are difficultly removed and easily mixed with the oil, so that the cleanliness degree of the oil is reduced, and the scratches of the outer walls ofthe gears are easily caused by the particulate matters in the oil; and moreover, the existing clamps for fixing the gears are low in practicability and incapable of fixing the gears with many hole diameters, and easily cause the damage of the gears in the process of fixing the gears.

Description

technical field [0001] The invention relates to the technical field of gear manufacturing, in particular to a powder metallurgy gear manufacturing method. Background technique [0002] Gears need to be oil-immersed after pressing and forming; the purpose is to increase the service life of the gears and improve the structural characteristics of the gears; however, the existing gears mainly have the following problems in the process of oil immersion: [0003] Existing gear oil immersion usually uses the pressed gears to be directly placed in the oil for soaking; however, directly placing the gears in the oil will easily cause the gears to collide with each other and cause damage to the outer wall of the gears; Solid particles are difficult to remove and are easy to mix with oil, resulting in a decrease in the cleanliness of the oil. Particles inside the oil are likely to cause scratches on the outer wall of the gear; and the existing clamps for fixing gears are low in practica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F5/08B22F3/02B22F3/10B22F3/26
CPCB22F3/003B22F3/02B22F3/10B22F3/26B22F5/08
Inventor 闫晶晶胡才富
Owner 圣航粉末冶金河北有限公司
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