CN201702248U

CN201702248U - Punching die of retainer cover

Info

Publication number: CN201702248U
Application number: CN2010201848299U
Authority: CN
Inventors: 马全法; 任得余; 王辉; 周晓阳
Original assignee: DEQING TIANMA BEARING Co Ltd; ZHEJIANG TIANMA BEARING CO Ltd
Current assignee: ZHEJIANG TIANMA BEARING CO., LTD.; Tianma Bearing Group Co Ltd
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2011-01-12
Anticipated expiration: 2020-05-10

Abstract

The utility model relates to a punching die of a retainer cover, which comprises a convex die and a concave die, and is characterized in that a punch needle of the convex die is provided with a punch needle head part and a punch needle base part; the punch needle head part and the punch needle base part are fixedly connected; and the concave die is provided with a convex plate. The material of the punching die of the retainer cover of this utility model is alloy die steel. (1) the punching die has a long service life; (2) burr fins produced by punching the retainer cover remains in a groove to guarantee no burr on the incising surface; (3) the step of finishing is reduced to improve the machining efficiency of the retainer cover; (4) the cost is reduced; (5) bearings of the finished product can be assembled easily; and (6) the problem of fit tightness between the retainer cover and the base of the retainer can be totally solved.

Description

The punching die of retainer lid

Technical field:

The utility model relates to a kind of punching die of retainer lid, is mainly used in the processing of cylindrical roller bearing retainer lid.

Background technology:

Bearing (bearing) is a kind of being applied on the rotating mechanism, is used for supporting the parts of reducing friction and bearing load.Retainer is a requisite part of bearing inside, and this mould structure is that the production of covering for the cylindrical roller bearing copper cage specially designs.Cylindrical roller bearing is because the cross section is little, and the bearing capacity height is out of shape little, be suitable for high load capacity, high-speed cruising, low vibration and quiet occasion, this products radial bearing capacity is big simultaneously, and the roller bus is linear with raceway and contacts, be applicable to the load that withstands shocks, the life-span is long.And roller bearing is also because the appearance and size compactness, and intensity is big, and bearing capacity is stronger, the rated speed height, and the precision height, thereby be widely used in each high-end field.At present the punching processing of the supporting entity copper retainer lid of roller bearing institute all still adopts traditional mould structure (see figure 1), and the shortcoming of this mould structure existence is:

1. punch is thinner towards pin, and intensity, rigidity are not enough.

2. protruding, die is low service life.

3. the punching burr all concentrates on the approaching side reverse side, influences the finished product assembly quality.

4. working (machining) efficiency is low, the processing cost height.

The utility model content:

Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art, and a kind of punching die of retainer lid is provided.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of punching die of retainer lid, comprise punch and die, the pin that dashes that it is characterized in that punch is provided with towards syringe needle with towards crown portion, towards syringe needle with fixedly connected towards crown portion, die is provided with boss.

The utility model mold materials adopts alloy die steel.

The utlity model has following advantage and effect: 1. die life is long; 2. the burr of retainer lid punching generation all residues in the groove, guarantees that approaching side does not have burr; 3. reduce light circlets joint, the working (machining) efficiency of retainer lid is improved; 4. cost reduces; 5. the assembling of finished product bearing is implemented easily; 6. thoroughly solved the tight ness rating that cooperates of retainer lid with seat.

Description of drawings:

Fig. 1 is the structural representation of prior art punch;

Fig. 2 is the upward view of Fig. 1;

Fig. 3 is the structural representation of prior art die;

Fig. 4 is the upward view of Fig. 3;

Fig. 5 is the structural representation of the utility model embodiment punch;

Fig. 6 is the upward view of Fig. 5;

Fig. 7 is the structural representation of the utility model embodiment die;

Fig. 8 is the upward view of Fig. 7.

The specific embodiment:

Referring to Fig. 5～Fig. 8, the punching die of the utility model embodiment retainer lid, be applicable to the punching die of cylindrical roller bearing retainer lid, the mould bases that is to use outsourcing to meet specification requirement is installed punch 1, die 2, positioning disk and stripper, convex concave mould is installed met the gap requirement, afterwards a whole set of mould is placed on the forcing press, guarantee that mould bases is installed reliable up and down, guiding is desirable, adjust the reasonable stroke of forcing press, the one side that retainer is stamped groove by direction shown in Figure 7 is put on the boss 21 of die 2 and is carried out punching production, and the burr that produces after the punching has been stayed the approaching side reverse side, guarantees in the assembling of bearing that like this retainer lid and the contact-making surface of rolling element do not have burr, changed traditional punching mode, also guarantee product quality, improved production efficiency, saved production cost.

Following improvement is done at core position at mould: the pin 11 that dashes of punch 1 is provided with towards the more sturdy crown portion 112 that dashes of syringe needle 111 and specific impulse syringe needle 111, and pin 11 roots that liquidate add bulk processing, have increased towards pin 11 intensity and work rigidity; Die 2 increases boss 21, guarantees that retainer covers reverse punching press.

Adopt this novel mould structure, by recoil, burr after the punching is remained in the groove, when assembling, there is not burr on the approaching side like this, guaranteed the assembly precision of finished product bearing, and, made the working (machining) efficiency of retainer lid improve greatly owing to adopted this mould structure, cost reduces, and has embodied economic benefit.

Claims

1. the punching die of retainer lid comprises punch and die, and it is characterized in that: the pin that dashes of punch is provided with towards syringe needle with towards crown portion, towards syringe needle with fixedly connected towards crown portion, die is provided with boss.

2. the punching die of retainer lid according to claim 1 is characterized in that: mold materials adopts alloy die steel.