CN107891320B

CN107891320B - Floating support of bearing grinder

Info

Publication number: CN107891320B
Application number: CN201710932810.4A
Authority: CN
Inventors: 罗庆; 周建亮; 宁小英
Original assignee: Zhejiang Huanyu Bearing Co ltd
Current assignee: Zhejiang Huanyu Bearing Co ltd
Priority date: 2017-10-10
Filing date: 2017-10-10
Publication date: 2024-08-09
Anticipated expiration: 2037-10-10
Also published as: CN107891320A

Abstract

The invention discloses a floating support of a bearing grinder, which comprises a support head and a support seat, wherein the support head is connected with the support seat through a pin shaft to form a cantilever structure, the support head is in interference fit connection with the support seat, the support head is in clearance fit with the pin shaft, and the axial movement amount of the support head is 0.02-0.03; the bearing head and the pin shaft are internally provided with a cooling liquid flow channel, and the outer diameter of the pin shaft is also provided with a cooling liquid outflow groove matched with the cooling liquid flow channel; the supporting head is of a circular sector structure, and a plurality of alloy round bars are in interference fit with the inner cambered surface of the supporting head. The floating support of the bearing grinding machine is easy to process, low in production cost and capable of improving production efficiency.

Description

Floating support of bearing grinder

Technical field:

the invention relates to a floating support, in particular to a floating support of a bearing grinder.

The background technology is as follows:

The existing floating support adopts two hard alloy round bars which form an angle of 120 degrees or 150 degrees according to the diameter of a bearing ring and are welded on a support head by brazing perpendicular to the axis of the ring. The structure has the following defects that 1, the supporting head adopts a simple supporting beam structure, the machining precision is not easy to ensure, and when the height of a workpiece is small, a magnetic pole with higher height is needed to be used; 2. the workpiece is in point contact with the round alloy rod at the beginning, at the moment, the grinding amount and the feeding speed cannot be too large due to small contact area, otherwise, the fulcrum burn or the fulcrum cut of the ferrule is easily generated by the ferrule, so that the product is degraded or scrapped, the processing efficiency is low, the rejection rate is high, and finally the fulcrum mark needs to be removed; 3. the contact point is gradually worn into an arc curved surface along with the increase of the number of the processed parts, so that the eccentric amount of the workpiece is changed, and if the eccentric amount is not timely adjusted, the roundness of a groove or a rollaway nest of the ferrule or the outer diameter wall thickness difference is deteriorated; 4. when the round alloy rod is worn to a certain extent and is required to be scrapped, the support head needs to be scrapped together, waste is caused, and the processing cost of the bearing is increased.

The invention comprises the following steps:

The invention aims to solve the technical problem of providing a floating support of a bearing grinder, which is easy to process, low in production cost and capable of improving production efficiency, and the floating support has high processing precision.

The technical scheme is that the floating support of the bearing grinder comprises a support head and a support seat, wherein the support head is connected with the support seat through a pin shaft to form a cantilever structure, the support head is in interference fit connection with the support seat, the support head is in clearance fit with the pin shaft, and the axial movement amount of the support head is 0.02-0.03; the bearing head and the pin shaft are internally provided with a cooling liquid flow channel, and the outer diameter of the pin shaft is also provided with a cooling liquid outflow groove matched with the cooling liquid flow channel; the bearing head is of a circular sector structure, a plurality of alloy round bars are in interference fit with the inner cambered surface of the bearing head, the alloy round bars are arranged on the inner cambered surface of the bearing head at intervals, the outer circumferential surfaces of the alloy round bars protrude out of the inner cambered surface of the bearing head, the alloy round bars are parallel to the axis of the bearing ring, the outer circumferential surfaces of the alloy round bars protruding out of the inner cambered surface of the bearing head are pre-ground to form arc concave curved surfaces according to the bearing surface of a machined workpiece, and the arc concave curved surfaces of the alloy round bars form bearing surface contact surfaces.

Compared with the prior art, the invention has the following advantages after the structure is adopted: the cantilever beam structure is easy to process, the thickness of the supporting head and the length of the pin shaft are easy to ensure, the cantilever beam structure can be suitable for ferrules with large height difference, and the ferrules can be reversely installed when the heights of the ferrules are smaller; the arc concave curved surface formed by pre-grinding each alloy round bar forms a supporting surface contact surface, the maximum length direction can be the same as that of a workpiece supporting surface, the grinding consumption can be larger, the processing efficiency can be greatly improved, the precision of the pre-ground supporting surface contact surface is high, the shape is attached to a ferrule, the surface is smooth, the abrasion is hardly caused, the eccentric amount is not changed, the processing precision of the ferrule is ensured, and the workpiece supporting head in a larger size range can be processed and adapted according to the size of the workpiece; the cooling liquid of the grinding machine can be connected into the flow channels of the supporting head and the pin shaft through the hose, the cooling liquid outflow groove on the pin shaft can ensure the reliable outflow of the cooling liquid, the contact part is cooled and lubricated, the supporting surface does not generate fulcrum marks, the outer diameter grinding procedure can be omitted, and the production cost is reduced; the workpiece machined by the invention has high precision, one procedure is reduced because the machined workpiece does not need to be polished, and the machining efficiency is high.

Preferably, the support head is formed by circular ring cutting. Saving materials and labor.

Preferably, the outer circumferential surface of the inner cambered surface of the supporting head, protruding from the round alloy rod, is premilled according to the supporting surface of the machined workpiece to form an arc concave curved surface, the premilled dimensional accuracy is D+/-0.01, and D is the diameter of the supporting surface of the machined workpiece.

Further, the pin shaft is a step pin shaft.

Further, the number of the alloy round bars is 4.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

The specific embodiment is as follows:

The invention is further described with reference to the drawings and detailed description which follow:

1-2, a floating support of a bearing grinder comprises a supporting seat 1 and a supporting head 2, wherein the supporting head 2 is connected with the supporting seat 1 through a step pin shaft 3 to form a cantilever structure, namely, the supporting head is arranged on one side of the supporting seat, the supporting head 2 is in interference fit connection with the supporting seat 1, the supporting head 2 is in clearance fit with the pin shaft 3, and the axial movement amount of the supporting head is 0.02-0.03; a cooling liquid flow channel is processed in the supporting head 2 and the pin shaft 3, and a cooling liquid outflow groove matched with the cooling liquid flow channel is also processed on the outer diameter of the pin shaft 3 so as to ensure the reliable outflow of the cooling liquid; the supporting head 2 is of a ring sector structure, a plurality of supporting heads can be formed by cutting a ring to facilitate processing, 4 alloy round bars 5 are in interference fit with the inner cambered surface of the supporting head, the alloy round bars 5 are arranged on the inner cambered surface of the supporting head at intervals, the outer circumferential surfaces of the alloy round bars protrude out of the inner cambered surface of the supporting head, the alloy round bars are parallel to the axial lead of a bearing ring, the outer circumferential surfaces of the alloy round bars protruding out of the inner cambered surface of the supporting head are pre-ground to form arc concave curved surfaces 4 according to the supporting surface of a processed workpiece, and the arc concave curved surfaces 4 of each alloy round bar form a supporting surface contact surface. Preferably, the outer circumferential surface of the inner cambered surface of the supporting head, protruding from the alloy round bar 5, is pre-ground to form an arc concave curved surface according to the supporting surface of the machined workpiece, the pre-grinding size precision is D+/-0.01, D is the diameter of the supporting surface of the machined workpiece, and the pre-grinding is carried out on an inner circular grinding machine by using a green silicon carbide grinding wheel or a diamond grinding wheel according to the size of the supporting surface of the workpiece.

In the prior art, the cooling liquid is usually aimed at the supporting part by using a cooling liquid water pipe of a grinding machine to carry out external lubrication cooling, the cooling structure cannot go deep and is difficult to spray to the middle part of the contact part. The contact surface of the bearing surface is formed by the arc concave curved surfaces formed by pre-grinding the 4 alloy round bars, the maximum length direction can be the same as that of the workpiece bearing surface, the grinding dosage can be larger, the processing efficiency can be greatly improved, the contact surface of the bearing surface after pre-grinding has high precision, the shape is attached to the ferrule, the surface is smooth, the abrasion is hardly caused, the eccentric quantity is not changed, the processing precision of the ferrule is ensured, and the workpiece bearing head in a larger size range can be processed and adapted according to the size of the workpiece.

Claims

1. The utility model provides a floating support of bearing grinding machine, includes supporting head and bearing pad, its characterized in that: the supporting head is connected with the supporting seat through a pin shaft to form a cantilever beam structure, the supporting head is in interference fit connection with the supporting seat, the supporting head is in clearance fit with the pin shaft, and the axial movement amount of the supporting head is 0.02-0.03; the bearing head and the pin shaft are internally provided with a cooling liquid flow channel, and the outer diameter of the pin shaft is also provided with a cooling liquid outflow groove matched with the cooling liquid flow channel; the supporting heads are of ring sector structures, the supporting heads are formed by cutting rings to form a plurality of supporting heads, a plurality of alloy round bars are in interference fit with the inner cambered surfaces of the supporting heads, the alloy round bars are arranged on the inner cambered surfaces of the supporting heads at intervals, the outer circumferential surfaces of the alloy round bars protrude out of the inner cambered surfaces of the supporting heads, the alloy round bars are parallel to the axial lead of the bearing rings, the outer circumferential surfaces of the alloy round bars protruding out of the inner cambered surfaces of the supporting heads are premilled to form arc concave curved surfaces according to the supporting surfaces of the processed workpieces, the number of the alloy round bars is 4, the arc concave curved surfaces of each alloy round bar form supporting surface contact surfaces, and the maximum length direction of each alloy round bar can reach the same as the supporting surfaces of the workpieces.

2. The floating support of a bearing grinder of claim 1, wherein: the supporting head is formed by cutting a circular ring.

3. The floating support of a bearing grinder of claim 1, wherein: the outer circumferential surface of the inner cambered surface of the supporting head, protruding from the round alloy rod, is premilled according to the supporting surface of the machined workpiece to form an arc concave curved surface, the premilled size precision is D+/-0.01, and D is the diameter of the supporting surface of the machined workpiece.

4. The floating support of a bearing grinder of claim 1, wherein: the pin shaft is a step pin shaft.