CN200993168Y

CN200993168Y - Lower bearing base for ball high-speed electric spindle

Info

Publication number: CN200993168Y
Application number: CN 200620154851
Authority: CN
Inventors: 汤秀清
Original assignee: 广州市大族高精电机有限公司
Current assignee: Guangzhou Haozhi Electromechanical Co Ltd
Priority date: 2006-12-18
Filing date: 2006-12-18
Publication date: 2007-12-19
Anticipated expiration: 2016-12-18

Abstract

The utility model discloses a lower bearing base uses for roller high speed electric principal axis, belongs to a mechanical process device. The utility model is comprises a bearing base 2, a bearing base flange 1, a bearing positioned board 5 and a base plate 6; the bearing base flange 1 is under the bearing base 2 and forms a unity; the depth of the through hole which uses for installing bearing in the bearing base 2 is two times of the width of the bearing; the bearing positioned board 5 and the base plate 6 are arranged at the upper end of the bearing base 2. The utility model has the advantages of that: the utility model has a good high speed performance and can improve the precision of the principal axis, and is a relatively perfect lower bearing base for roller high speed electric principal axis.

Description

The step that a kind of ball high-speed electric main shaft is used

Technical field

The utility model relates to a kind of machining equipment, the step that particularly a kind of ball high-speed electric main shaft is used.

Background technique

In the prior art, the step that the ball high-speed electric main shaft is used, its bearing hole is more shallow, a bearing can only be installed mostly, though this bearing support requires lower to the accuracy of manufacturing of bearing support and axle core, but use the high speed performance of electric main shaft of this bearing support lower, its dynamic beat is bigger, makes that the precision of electric main shaft is lower.

Summary of the invention

At the deficiency of the said goods, technical problem to be solved in the utility model provides the step that a kind of high speed performance is better, can improve electric main shaft precision.

For solving the problems of the technologies described above, technical solution adopted in the utility model is the step that a kind of ball high-speed electric main shaft of design is used, and comprises bearing seat 2 and bearing block flange dish 1, and the centre of bearing seat 2 has through hole, and it is termination bearing block flange dish 1 down;

The degree of depth of bearings mounted through hole is greater than joining two times of bearing width in A, the bearing seat 2;

B, the bearing positioning plate 5 in tape spool hole is housed in the upper end of bearing seat 2, the edge of this bearing positioning plate 5 is evenly equipped with several axial radiation holes 7;

The following centre of C, bearing block flange dish 1 has recessed seam 11 upwards.

Backing plate 6 also is housed on bearing positioning plate 5, and the centre of this backing plate 6 and edge have and bearing positioning plate 5 corresponding axis hole and radiation holes.

At the middle part of the right of bearing seat 2 pedestal wall, ecto-entad has earlier the compressed air channel 9 for radially passing in the middle of the pedestal wall, axially running through downwards.

On the outer cylinder of bearing seat 2, have the seal groove 8 that seal ring is used is installed.

Step of the present utility model has strengthened the degree of depth of bearings mounted bearing hole, makes it that two bearings can be installed, like this, though the requirement on machining accuracy to bearing support and axle core has improved, and can improve its high speed performance, the feasible precision of the electric main shaft of this bearing support that adopts improves greatly.Simultaneously, traditional bearing positioning plate that combines as a whole with bearing seat is designed to split type bearing positioning plate, and has radiation hole thereon, therefore, both make things convenient for the dismounting of lower bearing, improved the radiating condition of bearing support inner bearing again, can further improve the precision of electric main shaft.

Description of drawings

Accompanying drawing 1 is a main sectional view of the present utility model;

Accompanying drawing 2 is plan views of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail.

Present embodiment is made up of bearing seat 2, bearing block flange dish 1, bearing positioning plate 5 and backing plate 6.Bearing block flange dish 1 becomes one with it in the lower end of bearing seat 2; Bearing positioning plate 5 and backing plate 6 are contained in the upper end of bearing seat 2 successively.The lower edge of bearing block flange dish 1 has chamfering, and has the big end down shoulder hole 10 that is used to install, and the centre has recessed seam 11 upwards.

Bearing seat 2 is a cylindrical body, and the through hole in the middle of it is used to install lower bearing, and the degree of depth of this through hole can be assembled two bearings greater than joining two times of bearing width; On its outer cylinder, have twice the seal groove 8 that seal ring is used is installed; At the middle part of the right of bearing seat 2 pedestal wall, have compressed air channel 9, this compressed air channel 9 is radially passed to the centre of pedestal wall, axially is through to recessed seam 11 below the bearing block flange dish 1 downwards again by outer cylinder earlier.

Bearing positioning plate 5 is contained in the upper end of bearing seat 2, and is fixing by screw 3, has axis hole in the middle of it, has the seam boss below, and the edge is evenly equipped with three axial radiation holes 7.

Copper backing plate 6 is contained in the centre of bearing positioning plate 5, and is fixing by sunk screw 4, protrudes a little in the middle of it, and the centre of this backing plate 6 and edge have and bearing positioning plate 5 corresponding axis hole and radiation holes.

During use, install bearing and the axle core after, bearing seat 2 is fixed on the body by hole 10 with screw, refill lower ball cover and get final product.

Claims

1, the step used of a kind of ball high-speed electric main shaft comprises bearing seat (2) and bearing block flange dish (1), and the centre of bearing seat (2) has through hole, and it is termination bearing block flange dish (1) down; It is characterized in that:

The degree of depth of bearings mounted through hole is greater than joining two times of bearing width in A, the bearing seat (2);

B, the bearing positioning plate (5) in tape spool hole is housed in the upper end of bearing seat (2), the edge of this bearing positioning plate (5) is evenly equipped with several axial radiation holes (7);

The following centre of C, bearing block flange dish (1) has recessed seam (11) upwards.

2, step according to claim 1 is characterized in that: backing plate (6) also is housed on bearing positioning plate (5), and centre of this backing plate (6) and edge have and corresponding axis hole of bearing positioning plate (5) and radiation hole.

3, upper bearing bracket according to claim 1 and 2 is characterized in that: at the middle part of the right of bearing seat (2) pedestal wall, ecto-entad has earlier the compressed air channel (9) for radially passing in the middle of the pedestal wall, axially running through downwards.

4, upper bearing bracket according to claim 3 is characterized in that: have on the outer cylinder of bearing seat (2) seal groove (8) that seal ring is used is installed.