CN201013768Y

CN201013768Y - Device used for high speed electric main-shaft bearing assembling

Info

Publication number: CN201013768Y
Application number: CNU2007200896931U
Authority: CN
Inventors: 张中元; 李鹏; 牛青波; 方芳; 李红
Original assignee: Luoyang Bearing Science and Technology Co Ltd
Current assignee: Luoyang Bearing Science and Technology Co Ltd
Priority date: 2007-03-14
Filing date: 2007-03-14
Publication date: 2008-01-30
Anticipated expiration: 2017-03-14

Abstract

The utility model relates to a device for the assembly of a high-speed electric mainshaft bearing. The device is provided with a heating seat (2); wherein, an upper end surface of the heating seat (2) is provided with a convex sidestep, a lower internal hole of the heating seat (2) is provided with a sidestep and an internal screw thread; an upper end external diameter of the heating seat (2) is provided with a heat conductive ring (1) which is fixed by a screw (6); the sidestep and internal screw thread of the heating seat (2) in the lower internal hole are connected with a nut (5) with a concave hole on an end surface; a lower end surface of the nut (5) is processed with four spring caliper installation holes; an upper end surface of a ball-loading sliding seat (3) is provided with a conical surface and a lower external diameter of the ball-loading sliding seat (3) is provided with a convex sidestep; the external diameter of the convex sidestep is conductively matched with the heating seat (2); a lower end surface of the ball-loading sliding seat is provided with a concave hole; the concave hole of the ball-loading sliding seat (3) and the concave hole of the nut (5) are provided with a compressed spring (4); under the action of the bounce of the compressed spring (4), the ball-loading sliding seat (3) can move up and down along the conductive surface of the heating seat (2). The device of the utility model has the advantages of simple structure, convenient application, improving the assembly efficiency, saving the gas and reducing the production cost.

Description

A kind of device that is used for the assembling of high-speed electric main shaft bearing

Technical field

The utility model belongs to technical field of bearing processing, specially refers to a kind of device that is used for the assembling of high-speed electric main shaft bearing.

Background technique

The mill working machine tool adopts high-speed electric main shaft more in the bearing industry, the high-speed angular contact ball bearing of with lock mouthful of inner ring is used in its supporting, the assembly method of this class bearing is: at first be placed on the bearing inner race reference level on the table top up, the bakelite book sheet annulus that internal diameter of interior snare and external diameter are consistent with retainer internal diameter and external diameter also places on the table top, retainer is enclosed within on the bearing inner race, steel ball is adhered to the place, pocket hole of retainer with vaseline, while is placed on bearing outer ring on the electric hot plate or is heated in the oil groove about 120 ℃, after treating certain hour, be enclosed within the bearing outer ring that heats on the inner ring rapidly, upwards carry with tweezers clamping inner ring, steel ball is entered in the outer ring raceway, firmly promptly enter inner ring raceway then, thereby finish the assembling of bearing to pressing down the inner ring steel ball.Bearing is put into gasoline clean repeatedly, till vaseline was cleaned up fully, there are the following problems for this assembly method:

The first, if the speed of upwards carrying with tweezers clamping inner ring in assembly process is slower, bearing outer ring cools off very soon, and inner ring presses not enter subsequently;

The second, as using external force to be pressed into to bearing inner race, steel ball and raceway groove will produce to squeeze hinders, and has a strong impact on the running accuracy and the flexibility of finished product bearing, and the vibration of bearing when the work rotation increases, and shorten working life;

The 3rd, very difficulty is cleaned in bearing assembling back, needs big petrol, has increased cost of production.

Summary of the invention

For solving the existing problem of above-mentioned assembly method, the utility model has designed a kind of device that is used for the assembling of high-speed electric main shaft bearing, and this device has solved the assembly quality and the efficiency of high-speed electric main shaft bearing effectively.

In order to realize the foregoing invention purpose, the utility model has adopted following technological scheme:

The described device that is used for high-speed electric main shaft bearing assembling has a upper end to wear the heated seats of pore area step and internal thread boss rank, bottom in its device, heated seats upper end outer diameter configuration heat conduction ring, by screw calmly; Pore area step and internal thread place joining end are worn the nut of shrinkage pool in the heated seats bottom, and this nut lower end surface is processed with four spring caliper mounting holes; Dress ball slide upper end is worn the conical surface, lower outer diameter band boss rank, the external diameter on these boss rank cooperates with the heated seats guiding, lower end is worn shrinkage pool, be fitted with pressure spring in the shrinkage pool of dress ball slide and the shrinkage pool of nut, under the elastic force effect of pressure spring, dress ball slide can move up and down along the guide surface of heated seats.

Owing to adopted technological scheme as mentioned above, the utlity model has following good effect:

1), this device is easy to use, efficiency of assembling improves.

2), this device avoided upwards carrying with tweezers clamping inner ring untimely, the phenomenon that bearing outside cooling back inner ring dress is not entered.

3), this device avoided manually firmly beaing behind the bearing inner race steel ball and raceway groove and squeezed and hinder, the assembling back influences the mass defect of feel and running accuracy.

4), use this device can save gasoline, reduced cost of production.

Description of drawings

Fig. 1 is the apparatus structure schematic representation that is used for the assembling of high-speed electric main shaft bearing.

Among Fig. 1: the 1-heat conduction ring; The 2-heated seats; 3-dress ball slide; The 4-pressure spring; The 5-nut; The 6-screw.

Embodiment

As shown in Figure 1: the device that is used for the assembling of high-speed electric main shaft bearing of the present utility model, there is a upper end to wear the heated seats (2) of pore area step and internal thread in boss rank, the bottom in its device, heated seats (2) upper end outer diameter configuration heat conduction ring (1), fixing by screw (6); Pore area step and internal thread place joining end are worn the nut (5) of shrinkage pool in heated seats (2) bottom, and this nut (5) lower end surface is processed with four spring caliper mounting holes; Dress ball slide (3) upper end is worn the conical surface, lower outer diameter band boss rank, the external diameter on these boss rank cooperates with heated seats (2) guiding, lower end is worn shrinkage pool, be fitted with pressure spring (4) in the shrinkage pool of dress ball slide (3) and the shrinkage pool of nut (5), under the elastic force effect of pressure spring (4), dress ball slide (3) can move up and down along the guide surface of heated seats (2).

The utility model is when assembling high-speed electric main shaft bearing, and its using method is as follows:

One, with the centering of the internal diameter of heat conduction ring (1), the reference level of bearing outer ring is placed into down on the concave station rank of positioning seat (2) of device, it is placed on the electric hot plate heats;

Two, after being heated to certain temperature, retainer is inserted in the internal diameter of bearing outer ring, place on the boss of positioning seat (2), put into one group of steel ball then, this moment, steel ball was owing to the effect of gravity is rolled in the pocket hole of retainer along the conical surface of dress ball slide (3) rapidly;

Three, the bearing inner race reference level is inserted on the steel ball up, power more a little downwards on the bearing inner race reference level, dress ball slide (3) moves down, and pressure spring (4) is compressed, and steel ball promptly enters in the bearing inner race raceway groove;

Four, unclamp hand after, pressure spring (4) elongation, the elastic force that relies on pressure spring (4) to make progress, dress ball slide (3) moves up, a whole set of bearing that assembling is finished upwards is lifted thereupon, takes off bearing and has promptly finished whole assembly processes.

Device of the present utility model its major technique key when running in bearings is: at initial position, require the concave station terrace of heated seats (2) endoporus and the boss terrace of dress ball slide (3) external diameter under the effect of pressure spring (4), to contact fully, the Down Highway that guarantees ball pocket hole when retainer is put on the heated seats (2) is contour with dress ball slide (3) conical surface groove, and the elasticity of pressure spring (4) should be moderate, and the gradient of dress ball slide (3) should make steel ball can be rolled to rapidly in the pocket hole of retainer and be advisable.

Claims

1. one kind is used for the device that the high-speed electric main shaft bearing assembles, it is characterized in that: have a upper end to wear the heated seats (2) of pore area step and internal thread in boss rank, the bottom in this device, heated seats (2) upper end outer diameter configuration heat conduction ring (1), fixing by screw (6); Pore area step and internal thread place joining end are worn the nut (5) of shrinkage pool in heated seats (2) bottom, and this nut (5) lower end surface is processed with four spring caliper mounting holes; Dress ball slide (3) upper end is worn the conical surface, lower outer diameter band boss rank, the external diameter on these boss rank cooperates with heated seats (2) guiding, lower end is worn shrinkage pool, be fitted with pressure spring (4) in the shrinkage pool of dress ball slide (3) and the shrinkage pool of nut (5), under the elastic force effect of pressure spring (4), dress ball slide (3) can move up and down along the guide surface of heated seats (2).