CN201735998U

CN201735998U - Tool capable of disassembling bearing without damage

Info

Publication number: CN201735998U
Application number: CN201020219550XU
Authority: CN
Inventors: 王永强; 赵建国; 陈建财; 张玉清; 朱贵生; 罗金狮; 廖志毅; 武世勇; 龚彦红; 姜明
Original assignee: Xuanhua Iron and Steel Group Co Ltd; Hebei Iron and Steel Group Co Ltd
Current assignee: Xuanhua Iron and Steel Group Co Ltd; Hebei Iron and Steel Group Co Ltd
Priority date: 2010-06-09
Filing date: 2010-06-09
Publication date: 2011-02-09
Anticipated expiration: 2020-06-09

Abstract

The utility model relates to a tool capable of disassembling a bearing without damage, belonging to the technical field of mechanical tools, which can prevent the bearing and crankshaft bearing from being damaged when the bearings are overhauled. The technical scheme is that the tool capable of disassembling a bearing without damage comprises an external pressing ring and an internal top cover, wherein the external pressing ring is a steel annular ring with a certain thickness, the diameter of the inner bore of the external pressing ring is larger than the outer diameter of the bearing, the plane of the external pressing ring is provided with an annular shaft shoulder along the inner bore of the external pressing ring, the inner top cover is a steel annular ring comprises two semicircle rings, the external peripheral diameter of the inner top cover is matched with the periphery of the inner bore shaft shoulder of the external pressing ring, the diameter of the inner bore of the inner top cover is in gap match with the shaft diameter of the crankshaft, the periphery of the inner bore of the inner top cover is provided with an annular boss, and the outer diameter of the boss is larger than the outer diameter of the inner cover of the bearing, and is smaller than the inner diameter of the outer cover of the bearing. In the tool capable of disassembling the bearing without damage, the inner top cover can be jacked on the inner cover of the bearing, a press machine presses out the bearing through the external pressing ring and the inner top cover, can not damage the bearing, realizes the recycle of the bearing, can also not scrap a crankshaft belt, and greatly reduces the cost of the maintenance of the crankshaft.

Description

A kind of instrument of not damaged dismounting bearing

Technical field

The utility model relates to a kind of dismounting and is assemblied in the specific purpose tool that the arbor axle is fastened bearing, belongs to the machine tool technical field.

Background technology

High-speed wire production line mm finishing mill unit awl case is a high-speed equipment, and precision of location bearing own and installation accuracy requirement are all compared strictness, and the assembling back monitoring requirement axially amount of scurrying guarantees that in 0.06mm the radial run-out amount guarantees in 0.03mm.Awl case axle system opens and inspect the way that general employing forcing press cooperates frock, is example with the dismounting of awl case I axle axle system: traditional method for dismounting is that a U type plate is inserted into bearing one side in the axle system, with forcing press bearing is extruded then.Making in this way, the plate stress surface is a plane, simultaneously stressed on the principle at the inside and outside cover of course of exerting pressure middle (center) bearing, but because bearing is an interference fit with axle, so the pressure ratio that needs is bigger, plate is easy to be out of shape under elevated pressures, just make bearing outside earlier stressed after the distortion, pass to bearing inner sleeve by rolling element again, bearing is extruded from axle.The bearing that removes like this is very easily because inside and outside cover and the mutual power transmission of rolling element, displacement cause distortion to scrap, and middle inside and outside spacer ring also can produce distortion and can't use.Do not stress owing to U type plate opening direction simultaneously, so at the process middle (center) bearing of depressing is not that whole surface is stressed, just partial face is stressed, very easily cause the scuffing on main shaft surface, to cause the brearing bore cylindricity not overlap with the axial cylindrical degree when once more bearing being installed, the radial run-out of assembling rear axle is overproof.

Summary of the invention

Technical problem to be solved in the utility model is: it is the instrument of tearing the not damaged dismounting bearing of picking up process middle (center) bearing and arbor damage open that a kind of axle of can avoiding is provided.

The technical scheme that solves the problems of the technologies described above is:

The instrument of a kind of not damaged dismounting bearing, it is made up of outer press ring and interior top cover, and outer press ring is for there being certain thickness steel annulus, and the diameter of bore of outer press ring is greater than the external diameter of bearing, at the endoporus of upper edge, outer press ring plane outer press ring the annular shaft shoulder arranged; The steel annulus of interior top cover for forming by two semicircular ring, the excircle diameter and the outer press ring endoporus shaft shoulder excircle of interior top cover are complementary, and the diameter of bore and the arbor diameter of axle that interior top is overlapped are matched in clearance.

The instrument of above-mentioned not damaged dismounting bearing has the annulus boss on the endoporus circumference of interior top cover, the boss external diameter greater than the bearing inner sleeve external diameter less than the bearing outside internal diameter.

Adopt the instrument of the not damaged dismounting bearing of this structure, interior top cover can withstand on the bearing inner sleeve, forcing press extrudes bearing by outer shroud and interior top cover, the shaft strength face is even, can not damage bearing, can realize the utilization again of bearing, also can not bring scuffing, can reduce the cost of maintenance arbor greatly arbor.

Description of drawings

Fig. 1 user mode schematic diagram of the present utility model;

Fig. 2 is the front view of outer shroud;

Fig. 3 is the side view of outer shroud;

Fig. 4 is the front view of interior top cover;

Fig. 5 is the side view of interior top cover.

Number in the figure is as follows: shaft coupling 1, bevel gear 2, bearing 3, bearing inner sleeve 4, positioning sleeve 5, arbor 6, outer press ring 7, interior top cover 8, boss 9, forcing press 10.

The specific embodiment

Show among the figure that the instrument of the utility model not damaged dismounting bearing is newly designed harmless dismounting frock, form by outer press ring 7 and interior top cover 8.Outer press ring 7 is annulus of a tape spool shoulder, and diameter of bore is D200+0.10mm, and shaft shoulder bore dia is D350+0.10mm.In top cover 8 are semicircular ring of two band boss 9, external diameter is 350mm, internal diameter is 140mm, during use with two semi-rings to.More than be of a size of dismounting design specialized at awl case I axle axle system.During extensive use, can be element size according to different axles, the size of customization part outer press ring 7 and interior top cover 8.

The using method of the instrument of the utility model not damaged dismounting bearing is:

Outer press ring 7 is inserted in the left side of bearing 3;

Two semicircular ring of interior top cover 8 are contained on the axle, and boss 9 is towards bearing inner sleeve 4 ends, and in outer press ring 7 is enclosed within outside the top cover 8, makes it to form an integral body;

Forcing press 10 operating positions are put by system with axle, as shown in Figure 1;

Operating pressure machine 10 is depressed bearing and provision for disengagement jointly.

The advantage of this instrument is to make bearing 3 have only bearing inner sleeve 4 stressed in the process of forcing press 10 work, has avoided bearing outside stressed, has solved the problem on deformation of bearing 3; Bearing 3 stress surfaces are even simultaneously, arbor 6 tables can not occur and scratch phenomenon.

Claims

1. the instrument of not damaged dismounting bearing, it is characterized in that: it is made up of outer press ring [7] and interior top cover [8], outer press ring [7] is for there being certain thickness steel annulus, the diameter of bore of outer press ring [7] is greater than the external diameter of bearing [3], endoporus at outer press ring [7] upper edge, plane outer press ring [7] has the annular shaft shoulder, interior top cover [8] is the steel annulus of being made up of two semicircular ring, the excircle diameter and outer press ring [7] the endoporus shaft shoulder excircle of interior top cover [8] are complementary, and the diameter of bore and arbor [6] diameter of axle of interior top cover [8] are matched in clearance.

2. the instrument of not damaged according to claim 1 dismounting bearing is characterized in that: on the endoporus circumference of interior top cover [8], annulus boss [9] is arranged, boss [9] external diameter greater than bearing inner sleeve [4] external diameter less than the bearing outside internal diameter.