CN111733407A

CN111733407A - Method for avoiding raceway phosphorization during cylindrical bearing outer ring phosphorization

Info

Publication number: CN111733407A
Application number: CN202010611114.5A
Authority: CN
Inventors: 吕松; 赵普民; 陈亮; 宋世勇; 谢宗辉; 姚国栋; 刘杨; 张�杰
Original assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Current assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-10-02

Abstract

The invention discloses a method for avoiding raceway phosphorization during cylindrical bearing outer ring phosphorization, and relates to the field of metal surface phosphorization treatment. Realize through rubber ring and spring ring, at first design an internal diameter face similar with outer lane raceway shape is wider than the channel width, the external diameter face is narrower than the acidproof heat-resisting rubber ring of channel width, both ends set up the fastening groove about its inboard, again with inside extrusion packing into bearing outer lane with rubber ring, loosen back rubber ring reconversion and flange and contact, make outer lane raceway sealed, put into rubber ring with the elastic metal ring of inside straining spring ring afterwards, aim at rubber ring fastening groove and loosen elastic metal ring at last, make raceway and flange keep apart with the external world. The method adopts the sealing mode of the acid-resistant and heat-resistant rubber ring to avoid the phosphating solution from permeating into the roller path to cause excessive phosphating; and any structure of phosphorization equipment is not required to be changed, the operation is simple and convenient, the cost is low, the method is suitable for large-scale production, and the defect of reverse-order grinding of the outer ring raceway is avoided.

Description

Method for avoiding raceway phosphorization during cylindrical bearing outer ring phosphorization

Technical Field

The invention relates to the field of metal surface phosphating, in particular to a method for avoiding raceway phosphating during cylindrical bearing outer ring phosphating.

Background

Due to the characteristics of the use working condition, the bearing outer ring is required to be phosphorized, and the prior phosphorization has two modes, namely, the whole phosphorization is carried out on the surface of the outer ring, and the phosphorization is carried out on the outer surface or the raceway. With the improvement of quality requirements, a plurality of high-quality bearings require that the raceway cannot be phosphated, so that a plurality of bearing manufacturing enterprises adopt another phosphating mode, firstly carry out complete phosphatization on the outer ring, and then grind the phosphated layer of the raceway part of the outer ring by using a grinding machine. The defects of the mode are that the outer ring of the bearing needs to be ground in a reverse process, the labor intensity and the cost are increased, and the features of the logarithmic curve and the like of the raceway are easily damaged.

The chinese patent No. 201921457354.3 discloses a phosphorization device is prevented to bearing inner race raceway, include fixed establishment, be used for the sealed rubber seal of bearing inner race, compress tightly the seat, the rubber seal inboard is provided with compress tightly the seat, the rubber seal center is provided with fixed establishment still is including being used for the tensioning last straining device and lower straining device of rubber seal, it includes retainer plate, last tensioning plate, goes up arc round pin axle to go up straining device, it is in to go up retainer plate clearance fit last tensioning plate one end, it is in to go up arc round pin axle clearance fit go up the other end of tensioning plate. Although the device can be assembled and disassembled quickly, and subsequent processing treatment is not needed to be carried out on the outer ring raceway, the structure is complex, and the tensioning process is slow.

Disclosure of Invention

The object of the present invention is to provide a method for avoiding the phosphating of raceways during the phosphating of the outer ring of a cylindrical bearing, in order to overcome the problems indicated in the above-mentioned background art.

In order to realize the purpose, the following technical scheme is adopted:

a method for avoiding phosphating of a raceway during phosphating of an outer ring of a cylindrical bearing is realized through a rubber ring and a spring ring, the method comprises the steps of firstly designing an acid-resistant and heat-resistant rubber ring with an inner diameter surface which is wider than a channel width and an outer diameter surface which is narrower than the channel width, arranging fastening grooves at the upper end and the lower end of the inner side of the rubber ring, then inwards extruding and filling the rubber ring into the inner part of the outer ring of the bearing, enabling the rubber ring to be in contact with a flange after being restored to the original state after being loosened, sealing the outer ring raceway, then inwards fastening the elastic metal ring of the spring ring to enable the outer diameter of the elastic metal ring to be reduced and to be placed into the rubber ring, finally aligning the fastening grooves of the rubber ring to loosen the elastic metal ring, and enabling the spring ring to extrude the rubber ring. At the moment, the bearing raceway and the flange are isolated from the outside.

The invention has the beneficial effects that: when the outer ring of the cylindrical bearing is phosphorized, other parts of the outer ring can be phosphorized, and the raceway part is not phosphorized; the invention adopts the way of sealing the roller path by the acid-resistant and heat-resistant rubber ring, so as to prevent the phosphating solution from permeating into the roller path; the invention does not need to change any structure of the phosphorization equipment, has simple and convenient operation and low cost and is suitable for large-scale production.

Drawings

FIG. 1 is a layout of the present invention on a bearing outer race raceway;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

FIG. 3 is a process diagram of tightening the seal cup raceway.

The labels in the figure are: 1-bearing outer ring, 2-rubber ring, 2.2-fastening groove and 3-spring ring.

Detailed Description

The invention will be further explained and explained with reference to examples and drawings.

Example (b): referring to fig. 1-3, a method for preventing the raceway from being phosphorized during the phosphorization of the outer ring of a cylindrical bearing, realized by the rubber ring 2 and the spring ring 3, firstly, an acid-proof and heat-proof rubber ring 2 with the inner diameter surface which is similar to the shape of the outer ring raceway and is wider than the width of the channel and the outer diameter surface which is narrower than the width of the channel is designed, both ends are provided with fastening groove 2.2 about the inboard of rubber ring 2, will again inside rubber ring 2 inwards extrudees to fill into bearing inner race 1, and the rubber ring 2 reconversion after loosening closely laminates with the flange, makes the outer lane raceway sealed, and the elastic metal ring of inside straining spring coil 3 makes its external diameter diminish afterwards and puts into rubber ring 2, aims at rubber ring fastening groove 2.2 at last and makes spring coil 3 extrude rubber ring 2 after loosening elastic metal ring, ensures that rubber ring 2 and bearing inner race 1's flange fastening is sealed. At the moment, the roller path and the flange are isolated from the outside.

Claims

1. The utility model provides a method for avoid raceway bonderizing when cylindrical bearing outer lane bonderizing, realizes characterized by through rubber ring (2) and spring ring (3): firstly, designing an acid-resistant and heat-resistant rubber ring (2) which is similar to the outer ring raceway in shape, wherein the inner diameter surface of the rubber ring (2) is wider than the channel width, the outer diameter surface of the rubber ring is narrower than the channel width, fastening grooves (2.2) are formed in the upper end and the lower end of the inner side of the rubber ring (2), then the rubber ring (2) is inwards extruded and filled into the bearing outer ring (1), the rubber ring (2) is restored to be in contact with a flange after being loosened, the outer ring raceway is sealed, then an elastic metal ring of a spring ring (3) is inwards fastened to reduce the outer diameter of the elastic metal ring and put into the rubber ring (2), the spring ring (3) extrudes the rubber ring (2) after the elastic metal ring is loosened by aiming at the rubber ring fastening grooves (2.2), and the rubber ring and the flange of the.