Air floatation main shaft with inclination angle between rotating shaft flange and thrust bearing surface
By designing an inclined shaft flange and thrust bearing surface on the air-bearing main shaft, the problems of vibration influence and insufficient bearing capacity are solved, the angular stiffness and radial bearing capacity are improved, and processing and assembly are facilitated.
Patent Information
- Application Number
- CN202520063659.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The parallel vertical design of the existing air-floating main shaft is prone to vibration, and the angular stiffness and radial load of the cantilever air-floating main shaft are limited.
The shaft flange and thrust bearing surface are designed with an inclination angle, the front thrust bearing surface is inclined, and the rear thrust bearing surface is vertical. The asymmetric design is achieved by machining concave and convex inclination cone surfaces.
It improves the angular stiffness and radial bearing capacity, reduces the excitation vibration, and facilitates processing and assembly.
Smart Images
Figure CN223459728U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a rotating shaft technical field, concretely to a gas bearing main shaft with a tilt angle of rotating shaft flange and thrust bearing surface. BACKGROUND
[0002] Air bearing is also called gas bearing, mainly utilizes air or other gas as the gas bearing of bearing support, this kind of air bearing is resistant to high temperature, non-polluting and suitable for high-speed motor, usually gas bearing main shaft flange and thrust bearing are parallel and perpendicular to shaft diameter design, this kind of structure is also easy to produce exciting vibration and influence main shaft performance, and the angular rigidity and radial bearing of cantilever gas bearing are also limited to a certain extent. SUMMARY
[0003] The utility model discloses a gas bearing main shaft with a tilt angle of rotating shaft flange and thrust bearing surface to solve the problem in the above background technology.
[0004] To achieve the above object, the utility model provides the following technical scheme: a gas bearing main shaft with a tilt angle of rotating shaft flange and thrust bearing surface, including the rotating shaft, one side of the rotating shaft is equipped with rotating shaft flange, the both sides of rotating shaft flange are equipped with front thrust bearing and rear thrust bearing respectively, and the upper of rotating shaft flange is equipped with adjusting pad.
[0005] The side of the front thrust bearing surface to the rotating shaft flange is an inclined surface, and the side of the flange surface front end close to the thrust bearing of the shaft end of the rotating shaft flange is an inclined surface.
[0006] Preferably, the inclination of the front thrust bearing and the rotating shaft flange is 2°.
[0007] Preferably, the rear thrust bearing and the rotating shaft flange, the surface of the rear thrust bearing of the one end of the rotating shaft long rear end of the flange surface is a vertical surface.
[0008] Compared with the prior art, the utility model has the beneficial effects that: by designing the tilt angle of the rotating shaft flange and the thrust bearing surface, the bearing force fulcrum is extended forward, the angular rigidity and radial bearing capacity are improved, the concave inclined conical surface of the rotating shaft flange is processed, the corresponding convex inclined conical surface of the thrust bearing is processed, the other surface of the flange is still designed as a vertical axial plane, and the asymmetric design effectively reduces the exciting vibration phenomenon. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is the whole structure schematic view of the utility model;
[0010] Figure 2 It is the enlarged schematic view of I of the utility model.
[0011] In the drawing: 1, rotating shaft; 2, rotating shaft flange; 3, front thrust bearing; 4, rear thrust bearing; 5, adjusting pad. DETAILED DESCRIPTION
[0012] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments in the utility model without creative labor belong to the scope of protection of the utility model.
[0013] Please refer to 1-2, an embodiment provided by the utility model: a gas bearing spindle with a tilt angle of a shaft flange and a thrust bearing surface, comprising a rotating shaft 1, the rotating shaft 1 is provided with a rotating shaft flange 2 on one side, the rotating shaft flange 2 is provided with a front thrust bearing 3 and a rear thrust bearing 4 on both sides respectively, and the rotating shaft flange 2 is provided with an adjusting pad 5 above; the front thrust bearing 3 and the rear thrust bearing 4 form a thrust bearing, and the rotating shaft flange 2 is rotated on the front thrust bearing 3 and the rear thrust bearing 4,
[0014] The side of the front thrust bearing 3 facing the rotating shaft flange 2 is an inclined surface, the side of the rotating shaft flange 2 facing the front thrust bearing 3 is an inclined surface, and the surface of the front thrust bearing 3 and the rotating shaft flange 2 contacting each other is an inclined surface, so that the bearing force point on the bearing stress surface extends forward, thereby improving the effect of the angular stiffness and the radial bearing force.
[0015] The inclination of the front thrust bearing 3 and the rotating shaft flange 2 is 2°, and can also be designed into other angles according to requirements, the surface of the rear thrust bearing 4 and the rotating shaft flange 2 facing the rear thrust bearing 4 is a vertical surface, the two surfaces of the thrust bearing are inclined on one side and vertical on the other side, so that the asymmetric design effectively reduces the excitation phenomenon, and facilitates process processing and assembly adjustment.
Claims
1. A gas-lubricated main shaft with an inclined bearing surface of a rotary shaft flange and a thrust bearing, comprising a rotary shaft (1), characterized in that: The rotating shaft (1) is provided with a rotating shaft flange (2) on one side, the rotating shaft flange (2) is respectively provided with a front thrust bearing (3) and a rear thrust bearing (4) on both sides, and the rotating shaft flange (2) is provided with an adjusting pad (5) above. The side of the front thrust bearing (3) facing the rotating shaft flange (2) is an inclined surface, and the side of the front thrust bearing (3) close to the shaft end of the front end of the flange surface of the rotating shaft flange (2) is an inclined surface.
2. A gas-lubricated spindle according to claim 1, characterized in that: The inclination of the front thrust bearing (3) and the rotating shaft flange (2) is 2°.
3. A gas-lubricated spindle according to claim 1, characterized in that: The side of the rear thrust bearing (4) and the rotating shaft flange (2) flange surface rear end of the long one end of the rotating shaft (1) is a vertical surface.