Upper die for press-fitting of fan rotor and motor shaft

A fan rotor and motor shaft technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems affecting the overall quality of the fan, large noise, etc., to achieve time-saving and convenient operation, ensure the overall quality, and not easy to move The effect of moving

CN104097047AInactive Publication Date: 2014-10-15NINGBO LIONBALL VENTILATOR
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-10-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

An upper die for press-fitting of a fan rotor and a motor shaft comprises a steel upper die body (1), wherein the upper die body (1) is provided with an axial through hole (1.1), the axial through hole (1.1) is internally provided with a combined rubber tube in a sleeving way, the combined rubber tube is formed by an inner-layer soft rubber tube (2.1) and an outer-layer hard rubber tube (2.2), the inner-layer soft rubber tube (2.1) and the outer-layer hard rubber tube (2.2) are formed by injection molding with an injection mold, the outer side wall of the outer-layer hard rubber tube (2.2) is provided with multiple axial raised ribs (2.21) distributed along the circumference, and the inner side wall of the axial through hole (1.1) of the upper die body (1) is provided with multiple clamp slots clamped and matched with the axial raised ribs (2.21) one by one. By adopting the upper die, the motor shaft can be effectively prevented from being worn and scratched.
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Description

technical field

[0001] The invention relates to the technical field of press-fitting of fan rotors and motor shafts, in particular to an upper mold for press-fitting fan rotors and motor shafts. Background technique

[0002] In the press-fitting process of the fan rotor and the motor shaft, in order to make the motor shaft tightly fit in the center shaft hole of the fan rotor, the entire motor shaft is not made into a structure that is tightly fitted to the center shaft hole. And just stamping out on the outer peripheral wall of the tightly fitting section of the motor shaft a plurality of punching ribs arranged in the circumferential direction, so that the diameter of the tightly fitting section of the motor shaft is greater than the inner diameter of the central shaft hole to form a tight fit with the central shaft hole. The diameter of other shaft sections of the motor shaft is smaller than the inner diameter of the central shaft hole to form a clearance fit with the cent...

Examples

Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0016] As shown in the figure, the upper mold for press-fitting the fan rotor and the motor shaft of the present invention includes a steel upper mold body 1, and the upper mold body 1 is provided with an axial through hole 1.1.

[0017] The inner sleeve of the axial through hole 1.1 is provided with a combined rubber tube, and the combined rubber tube consists of an inner soft rubber tube 2.1 and an outer hard rubber tube 2.2. The inner layer of soft rubber tube 2.1 and the outer layer of hard rubber tube 2.2 are formed by injection molding through an injection mold. The outer wall of the outer hard rubber tube 2.2 is provided with a plurality of axial ribs 2.21 distributed along the circumferential direction, and the inner wall of the axial through hole 1.1 of the upper mold body 1 is provided with a plurality of axial ribs 2.21. One card matching card slo...