CN109158965B

CN109158965B - Backing bearing coping mould

Info

Publication number: CN109158965B
Application number: CN201811011827.7A
Authority: CN
Inventors: 王如意; 吴凯; 庄素文; 刘明云; 魏巍
Original assignee: XIANGYANG YUQING TRANSMISSION TECHNOLOGY CO LTD
Current assignee: XIANGYANG YUQING TRANSMISSION TECHNOLOGY CO LTD
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2020-09-04
Anticipated expiration: 2038-08-31
Also published as: CN109158965A

Abstract

The invention relates to the technical field of bearing processing, in particular to a backing bearing grinding mould, which is characterized in that the outer diameter of a bearing outer ring is ground to be changed into the whole bearing clamping grinding outer diameter by utilizing the mould on the basis of the prior art, the H value of the bearing is directly ground, the processing precision is good, and the efficiency is high. The bearing grinding machine is characterized by comprising a fixed part and a movable part, wherein the fixed part is detachably connected with the movable part, a bearing to be ground is clamped between the fixed part and the movable part, the fixed part comprises a mandrel, one end outside the mandrel is provided with a fixed flange for axially clamping an inner ring, a fixed clamping ring for axially fixing an outer ring is arranged outside the mandrel, the fixed clamping ring can rotate around the mandrel, an expansion shaft sleeve is arranged outside the mandrel, the movable part comprises a movable sleeve matched with the mandrel, the movable sleeve is detachably connected with the mandrel, a movable flange for axially clamping the inner ring is arranged outside the movable sleeve, a movable clamping ring for axially fixing the outer ring is arranged outside the movable sleeve, and the movable clamping ring can rotate around the movable sleeve.

Description

Backing bearing coping mould

Technical Field

The invention belongs to the technical field of bearing processing, and particularly relates to a backing bearing grinding mould.

Background

When the backing bearing is used, the 6 sets of bearings are generally assembled on a mandrel for use, so that the H value (the distance between the inner diameter of the bearing inner ring and the outer diameter of the outer ring) of the 6 sets of bearings assembled on the mandrel is required to be controlled within a very small range, the current industry requirement is within 0.005mm, otherwise, the bearing with the large H value has large bearing capacity and is easy to damage in the using process.

At present, the processing technology of a bearing is that an inner ring is normally processed according to a drawing, after an outer ring is produced, the outer diameter of the outer ring is polished, the wall thickness is measured, then the outer ring is grouped (6 groups) according to measurement records, and then the outer ring is matched with the inner ring, and the bearing refers to the Chinese utility model patent with the publication number of CN 205927703U. However, in the outer ring produced by such a machining method, it often happens that a part of the outer ring cannot participate in grouping due to large dimensional deviation, and thus the outer diameter needs to be ground again for grouping. Further, part of the bearing is repeatedly clamped and polished for multiple times, so that the production efficiency is low; even the outer ring is carelessly ground and is out of tolerance, and the machining precision is seriously influenced.

On the other hand, the traditional method for grinding the backing bearing is to disassemble the outer ring and independently grind the outer diameter of the outer ring. However, after a period of use, the bearing outer ring is likely to be deformed elliptically, i.e., the convexity of the bearing outer ring is changed. If the bearing outer ring ellipse is out of tolerance and the wall thickness difference does not reach the standard, the ellipse and the wall thickness are difficult to be repaired by the existing grinding mode of only grinding the outer diameter.

Disclosure of Invention

The invention aims to provide a backing bearing grinding mould, which is characterized in that the outer diameter of a bearing outer ring is ground by using the mould instead of the grinding outer diameter of the bearing which is integrally clamped by using the mould on the basis of the prior art, the H value of the bearing is directly ground, the machining precision is good, and the efficiency is high.

The technical purpose of the invention is realized by the following technical scheme:

a backing bearing grinding clamping fixture comprises a fixed part and a movable part, wherein the fixed part is detachably connected with the movable part, and a bearing to be ground is clamped between the fixed part and the movable part.

Furthermore, the fixed part comprises a mandrel, and a fixed flange for axially clamping the inner ring is arranged at one end outside the mandrel.

Furthermore, a fixed clamping ring for axially fixing the outer ring is arranged outside the mandrel.

Further, the fixed clamping ring is connected with the fixed flange through a fixed connecting ring, and the fixed clamping ring can rotate around the mandrel.

Furthermore, an expansion shaft sleeve is arranged outside the mandrel.

Further, the movable part comprises a movable sleeve matched with the mandrel, and the movable sleeve is detachably connected with the mandrel.

Furthermore, a movable flange for axially clamping the inner ring is arranged outside the movable sleeve.

Furthermore, a movable clamping ring for axially fixing the outer ring is arranged outside the movable sleeve.

Further, the movable clamping ring is connected with the movable flange through a movable connecting ring, and the movable clamping ring can rotate around the movable sleeve.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with the prior art, the process of independently disassembling the outer ring, grinding the outer ring and then assembling the outer ring in groups, the process has the advantages that the bearing is integrally clamped and grinded to grind the outer diameter by using the clamping fixture, and the H value of the bearing is directly finished, so that the grouping link in the traditional process is omitted, the grouping and the outer diameter grinding are combined into one step, the processing precision is better, and the efficiency is higher.

2. The inner ring is fixed in a hydraulic expansion mode, the inner ring does not rotate in the grinding process, the outer ring rotates, and under the condition that the clearance is close to O, the wall thickness of the outer ring is actually ground, so that the grinding result is not influenced by the conditions of elliptical deformation, wall thickness over-tolerance and the like of the outer ring.

3. The matching of the movable flange and the fixed flange enables the inner ring to be clamped in the axial direction, and the inner ring is prevented from moving along the axial direction in the grinding process.

4. Because the movable clamping ring and the fixed clamping ring can rotate relative to the movable sleeve and the mandrel, the outer ring can rotate relative to the inner ring on the premise that the outer ring is axially fixed by utilizing the movable clamping ring and the fixed clamping ring, so that the grinding is smoothly carried out.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a split structure of a backing bearing coping mold according to the present invention;

FIG. 2 is a schematic view of the overall structure of a backing bearing grinding fixture after a bearing to be ground is mounted and clamped.

In the figure, 01, outer ring; 02. an inner ring; 1. a fixed portion; 2. a movable portion; 3. a mandrel; 31. a nozzle tip; 4. an expansion sleeve; 5. a fixed flange; 51. fixing a connecting ring; 52. a fixed clamping ring; 6. a movable sleeve; 61. fastening a nut; 7. a movable flange; 71. a movable connecting ring; 72. a movable clamping ring; 8. and pressing the end cover.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

A backing bearing coping mould comprises two parts, namely a fixed part 1 and a movable part 2. Wherein fixed part 1 includes a dabber 3 of horizontal setting, and 3 overcoat of dabber are equipped with expansion shaft sleeve 4, and 3 lateral walls of dabber are opened has the glib talker 31 that can be connected with the hydraulic pump, and expansion shaft sleeve 4 communicates with glib talker 31 through the oil circuit that sets up in dabber 3.

Referring to the figure, a fixing flange 5 is connected to the outside of the mandrel 3 on the side of the expansion sleeve 4, and a fixing clamp ring 52 is connected to the fixing flange 5 on the side away from the mandrel 3 via a fixing connection ring 51. The combination of the fixed clamp ring 52, the fixed connection ring 51 and the fixed flange 5 is similar to the structure of a rolling bearing, so that the fixed clamp ring 52 can rotate relative to the mandrel 3. In this embodiment, the two sides of the expansion shaft sleeve 4 are connected with the core shaft 3 to form compression end covers 8 for reinforcing the expansion shaft sleeve 4, so that the phenomenon that the taper of the bearing to be polished is out of tolerance due to different expansion amounts at the two ends of the expansion shaft sleeve 4 is avoided.

Referring to the figure, the movable part 2 comprises a movable sleeve 6 which can be sleeved outside the mandrel 3, and the movable sleeve 6 is detachably connected with the mandrel 3 by screwing a fastening nut 61 outside the movable sleeve 6 between the movable sleeve 6 and the mandrel 3. The movable flange 7 is connected outside the movable sleeve 6, and the movable clamping ring 72 is connected on one side of the movable flange 7 far away from the movable sleeve 6 through a movable connecting ring 71. The combination of the movable clamping ring 72, the movable connecting ring 71 and the movable flange 7 is similar to the structure of a rolling bearing, so that the movable clamping ring 72 can rotate relative to the movable sleeve 6.

The process for processing the backing bearing by utilizing the coping mould comprises the following steps:

s1: the fastening nut 61 is screwed to release the connection between the movable sleeve 6 and the mandrel 3, so that the movable part 2 is separated from the fixed part 1.

S2: and assembling and mounting the normally produced inner ring 02, the rolling element group and the outer ring 01 to be polished to form the bearing to be polished.

S3: screwing down the bolt on the pressing end cover 8 to fix one side of the fixed end of the expansion shaft sleeve 4; and (3) inserting the inner ring 02 of the bearing to be polished into the mandrel 3, enabling the side wall of the end surface of the inner ring to be abutted against the outer diameter end surface of the expansion shaft sleeve 4, and pushing the bearing to be polished to be sleeved on the periphery of the expansion shaft sleeve 4.

The fixing nut 61 is screwed down to press one side of the movable end of the expansion shaft sleeve 4, so that the expansion amount of the two sides is consistent when the expansion shaft sleeve 4 is pressurized.

The movable sleeve 6 is sleeved outside the mandrel 3, and the fastening nut 61 is screwed to relatively fix the movable sleeve 6 and the mandrel 3. And screwing the bolt on the movable flange 7 to enable the bolt to be tightly abutted against the side wall of the inner ring 02 of the bearing to be polished, so that the inner ring 02 of the bearing to be polished is axially fixed under the matching of the movable flange 7 and the expansion shaft sleeve 4. And screwing the bolts of the adjusting fixed flange 5 to enable the bolts to be abutted against the side wall of the outer ring 01 of the bearing to be polished, and axially fixing the outer ring 01 of the bearing to be polished under the matching of the movable clamping ring 72 and the fixed clamping ring 52.

S4: the grinding clamping fixture with the bearing to be ground is integrally installed on a grinding machine, and the top of the grinding machine is respectively tightly propped against two ends of a grinding clamping fixture mandrel 3.

S5: the manual hydraulic pump is connected with the oil nozzle 31 of the mandrel 3, the hydraulic pump is pressurized, when the pressure of the hydraulic pump reaches a certain pressure, the bearing clearance is close to 0, and meanwhile, under the action of hydraulic oil, the expansion shaft sleeve 4 gradually expands to be tightly abutted against the inner ring 02, so that the inner ring 02 and the mandrel 3 are relatively fixed, and the inner ring 02 is prevented from rotating.

S6: the grinding machine drives the outer ring 01 to rotate and grinds the outer diameter.

Claims

1. A backing bearing coping mould is characterized in that: the grinding device comprises a fixed part (1) and a movable part (2), wherein the fixed part (1) is detachably connected with the movable part (2), and a bearing to be ground is clamped between the fixed part (1) and the movable part (2); the fixed part (1) comprises a mandrel (3), a fixed flange (5) for axially clamping an inner ring (02) is arranged at one outer end of the mandrel (3), a fixed clamping ring (52) for axially fixing an outer ring (01) is arranged outside the mandrel (3), the fixed clamping ring (52) is connected with the fixed flange (5) through a fixed connecting ring (51), and the fixed clamping ring (52) can rotate around the mandrel (3); the movable part (2) comprises a movable sleeve (6) matched with the mandrel (3), the movable sleeve (6) is detachably connected with the mandrel (3), a movable flange (7) used for axially clamping the inner ring (02) is arranged outside the movable sleeve (6), and an expansion shaft sleeve (4) is arranged outside the mandrel (3).

2. The backing bearing coping jig according to claim 1, wherein: and a movable clamping ring (72) for axially fixing the outer ring (01) is arranged outside the movable sleeve (6).

3. The backing bearing coping jig according to claim 1, wherein: the movable clamping ring (72) is connected with the movable flange (7) through a movable connecting ring (71), and the movable clamping ring (72) can rotate around the movable sleeve (6).