CN202052947U

CN202052947U - Lower bearing pedestal structure of high-speed electric main shaft

Info

Publication number: CN202052947U
Application number: CN2011200853400U
Authority: CN
Inventors: 汤秀清
Original assignee: Guangzhou Haozhi Electromechanical Co Ltd
Current assignee: Guangzhou Haozhi Electromechanical Co Ltd
Priority date: 2011-03-28
Filing date: 2011-03-28
Publication date: 2011-11-30
Anticipated expiration: 2021-03-28

Abstract

The utility model relates to a lower bearing pedestal structure of a high-speed electric main shaft, particularly relates to a bearing pedestal component used for mechanically processing the floatation high-speed electric main shaft of a machine tool. The utility model discloses at least one bearing liner (8), which is arranged at the inner wall of the axial through hole position of a lower bearing body (7). In the utility model, a combined structure is used to ensure easy processing, and a bearing core and a bearing do not lock up; the lower bearing pedestal structure has the advantages of convenience in loading and unloading, fine vibration damping effects, high heat dissipating efficiency, long service life, and convenience in popularization and application.

Description

A kind of step structure of high-speed electric main shaft

Technical field

The utility model relates to a kind of machining equipment, specifically a kind ofly is used for the bearing block assembly that the mechanical processing machine air floated high speed electric mandrel is used.

Background technology

In the prior art, the bearing block assembly that air floated high speed electric mandrel is used, structure is single, and locking phenomenon takes place in processing difficulties easily, loading and unloading inconvenience, heat-sinking capability is low, and Oscillation Amplitude is big, and service life is short, needs shortcomings such as frequent replacing.

Summary of the invention

The utility model relates to a kind of step structure of high-speed electric main shaft, and it uses fabricated structure, makes handling ease, and is easy to loading and unloading, good damping result, and the radiating efficiency height, long service life is convenient to promote and use.

The utility model technical solution be existing bearing lower surface (1), annular convex (2), passage (3), radially damping plug (4), off normal (5), cannelure (6), lower bearing body (7), axially on the basis of throttling damping plug (9), shaft bearing plate (10) and screw hole (11), the utility model is provided with at least one bearing shell (8) particularly in the inwall at the axial pass-through holes place of lower bearing body (7).

Inwall at the axial pass-through holes place of described lower bearing body (7) is provided with a bearing shell (8).

The utility model operation principle is that this structure mainly is connected and fixed by pack into screw and body of screw hole (11), feed gas by the body place and enter the flat position of bearing block (5), because flat position (5) are connected with cannelure (6) up and down, gas flows a week along cannelure (6) circumferencial direction, enter each passage (3) and axial throttling damping plug (9), the lower surface axial support surface, when gas flows to axial throttling damping plug (9), produce axial suspension power, make the core can axial suspension, when gas enters passage (3) with throttling damping plug (7) radially, produce radial suspension force, make a core produce radial suspension again, the axle core is in the suspended state like this, without any contact friction, friction loss and heating have been reduced most possibly in the time of can making rotation; When the axle core rotates when unbalance, axle core and step friction even locking phenomenon, we have composite bearing shell (8) and shaft bearing plate (10) in the bearing block design at above defective, also locking phenomenon can not occur even rub.

Advantage of the present utility model is:

1, this structural behaviour is stable, and is reliable;

2, increase bearing shell and shaft bearing plate and be difficult for locking, bearing and axle core are improved service life, convenient disassembly, maintenance cost is low.

Description of drawings

Fig. 1 is the organigram of overlooking of the present utility model.

Fig. 2 is an A-A profile construction schematic diagram of the present utility model.

Fig. 3 is a B-B profile construction schematic diagram of the present utility model.

Fig. 4 is a C-C profile construction schematic diagram of the present utility model.

Fig. 5 is that K of the present utility model is to organigram.

The specific embodiment

Embodiment 1

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the utility model existing bearing lower surface (1), annular convex (2), passage (3), radially damping plug (4), off normal (5), cannelure (6), lower bearing body (7), axially on the basis of throttling damping plug (9), shaft bearing plate (10) and screw hole (11), the inwall at the axial pass-through holes place of lower bearing body (7) is provided with a bearing shell (8).

Embodiment 2

Identical with embodiment 1, the inwall that is the axial pass-through holes place of described lower bearing body (7) is provided with two bearing shells (8).

Claims

1. the step structure of a high-speed electric main shaft, it has comprised bearing lower surface (1), annular convex (2), passage (3), radially damping plug (4), off normal (5), cannelure (6), lower bearing body (7), axially throttling damping plug (9), shaft bearing plate (10) and screw hole (11), it is characterized in that the inwall at the axial pass-through holes place of lower bearing body (7) is provided with at least one bearing shell (8).

2. the step structure of a kind of high-speed electric main shaft according to claim 1 is characterized in that the inwall at the axial pass-through holes place of lower bearing body (7) is provided with a bearing shell (8).