Planet wheel thread rolling plate and thread rolling process thereof

A technology of planetary gear and thread rolling plate, applied in the field of cold stamping processing, can solve the problems of difficult chamfering and other problems, and achieve the effect of reducing processing steps and ensuring processing accuracy
CN113967710APending Publication Date: 2022-01-25YUHUAN PUTIAN UNIDIRECTIONAL DEVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUHUAN PUTIAN UNIDIRECTIONAL DEVICE CO LTD
Publication Date
2022-01-25

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Abstract

The invention provides a planet wheel thread rolling plate and a thread rolling process thereof, and belongs to the technical field of cold stamping machining. The problem that chamfering is very difficult to machine on a rack on an existing planet wheel is solved. The thread rolling plate comprises a body, a plurality of thread rolling racks which are obliquely arranged at uniform intervals are arranged on the body, each thread rolling rack is provided with a top face, a forward rack face and a reverse rack face, an inclined face intersecting with the reverse rack face is arranged on the side, located on the reverse rack face, of each thread rolling rack, the inclined direction of the inclined faces is the same as that of the reverse rack faces, and the included angles alpha between the inclined faces and the side surfaces where the long edges of the body are located are less than the included angles beta between the reverse rack faces and the side surfaces where the long edges of the body is located, after thread rolling, uniform rack grooves are formed in the periphery of a blank planet wheel of the thread rolling racks, and the inclined surface forms an arc-shaped chamfer surface on the groove wall on one side of each rack groove. By means of the design, chamfering machining on the planet gear rack is very convenient.
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Description

technical field

[0001] The invention belongs to the technical field of cold stamping processing, and relates to a thread rolling board, in particular to a thread rolling process of a planetary wheel thread rolling board. Background technique

[0002] The thread rolling boards are widely used in our daily life. Generally, the thread rolling boards appear in pairs. The two thread rolling boards hold the workpiece to be processed, and then move the workpiece along the threading board to make a circle. The tooth rubbing on the thread rolling board can form a rack on the outer peripheral surface of the workpiece, and the external thread or tap of the workpiece can be processed by using the thread rubbing board.

[0003] Of course, the teeth on some gears can also be thread-rolled and extruded through a thread-rolling board. For meshing, it is generally necessary to process chamfers at the end of the rack of the planetary gear. In our domestic existing technology, after the rack...

Claims

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