CN215143885U

CN215143885U - Self-positioning punching die for producing elliptical retainer

Info

Publication number: CN215143885U
Application number: CN202121542245.9U
Authority: CN
Inventors: 郑广会; 温春国
Original assignee: Shandong Golden Empire Precision Machinery Technology Co Ltd
Current assignee: Shandong Golden Empire Precision Machinery Technology Co Ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-12-14
Anticipated expiration: 2031-07-06

Abstract

The utility model relates to an oval holder production is with self-align cut-out press. The technical scheme is that the self-positioning punching die for producing the oval retainer comprises a lower die assembly and an upper die, wherein the lower die assembly comprises a lower die base, a positioning column is arranged in the center of the lower die base, a lower die is sleeved on the positioning column, a spring is arranged between the lower die and the lower die base, and the spring is sleeved on the positioning column; the upper die is positioned right above the lower die, a cylindrical groove is arranged in the upper die, and the inner diameter of the cylindrical groove is matched with the diameter of the positioning column. The utility model has the advantages that the positioning column passes through the center of the oval retainer in the punching process and fixes the position of the retainer, thereby ensuring the accurate positioning of the retainer in the punching process, avoiding the movement of the retainer due to the action of the punching needle and ensuring the processing precision and the product quality; after the upper die is lifted after punching, the spring can jack the lower die, and the device automatically resets and more conveniently takes off the workpiece for punching.

Description

Self-positioning punching die for producing elliptical retainer

Technical Field

The utility model relates to a bearing processing equipment field especially relates to an oval production of keeping ware is with self-align cut-out press.

Background

Bearing cages (also called bearing retainers) refer to bearing parts that wrap around all or part of the rolling elements and move with them to isolate the rolling elements and generally guide them and retain them within the bearing. The retainer of the ball bearing is generally formed by butt joint of two retainer units shown in fig. 1 and 2, each retainer unit comprises a plurality of ball pocket parts which are circumferentially arranged and used for accommodating ball-shaped rollers and a flat plate part which is connected with the adjacent ball pocket parts, through holes are formed in the flat plate part, and the two protector units are connected through perforated rivets after being butted.

The production process of the retainer can be roughly divided into blanking, punching, and punching, wherein the punching is to punch the annular sheet out of the ball pocket portion, and the punching is to punch the rivet hole in the flat plate portion. The punching die is different from a stamping die, the contact area of a stamping needle and a workpiece is small, and a large instant acting force is needed for cutting the workpiece, so that during a punching process, the pressure of the stamping needle easily causes the movement of a retainer workpiece, the punching deviation is caused, and finally the bearing precision and the performance are reduced.

Disclosure of Invention

The utility model discloses work piece shifts easily when keeping the process of punching a hole in the production process to oval keeping ware, leads to the problem that machining precision descends, provides one kind and can keep the work piece position motionless at the in-process that punches a hole, and the oval keeping ware production that accurately punches a hole is with from positioning cut-out press.

In order to solve the problems, the technical scheme adopted by the utility model is that the self-positioning punching die for producing the oval retainer comprises a lower die component and an upper die, wherein the lower die component comprises a lower die base, a positioning column is arranged at the center of the lower die base, a lower die is sleeved on the positioning column, a spring is arranged between the lower die and the lower die base and sleeved on the positioning column, the upper end of the spring is abutted against the bottom surface of the lower die, and the lower end of the spring is abutted against the lower die base; the upper die is positioned right above the lower die, a cylindrical groove is formed in the upper die, and the inner diameter of the cylindrical groove is matched with the diameter of the positioning column; a certain number of punching needles are uniformly arranged on the lower die base along the circumferential direction, through holes for the punching needles to pass through are formed in the lower die, and punching holes matched with the punching needles are formed in the bottom surface of the upper die. The oval retainer is annular, and is provided with a positioning column and a lower die capable of sliding up and down on the positioning column according to the shape characteristics, when the upper die is pressed down, the lower die descends first and then punches a hole, the positioning column penetrates through the center of the oval retainer in the descending process and fixes the position of the retainer, so that the retainer is accurately positioned in the punching process, the retainer cannot move due to the action of a punching needle, and the processing precision and the product quality are ensured; after the upper die is lifted after punching, the spring can jack the lower die, and the device automatically resets and more conveniently takes off the oval retainer workpiece after punching.

Preferably, the positioning column is provided with a guide groove along the axial direction, the guide groove is radially communicated with the positioning column, a guide sliding block is radially arranged inside the lower die, and the guide sliding block is arranged in the guide groove. The positioning of the lower die in the circumferential direction is provided, and the situation that the rotation limiting force of the lower die in the circumferential direction completely acts on the stamping needle to cause the stamping needle to be bent is prevented.

Preferably, the upper part of the positioning column is provided with a pin hole, the axial direction of the pin hole is vertical to the horizontal length direction of the guide groove, a pin is installed in the pin hole, and the horizontal position of the guide sliding block is located below the pin. The lower die is prevented from being popped up by the spring when the lower die is reset and separated from the positioning column.

Preferably, still be equipped with the annular post on the lower mould base, the annular post sets up with the reference column is coaxial, and the height that highly is less than the reference column of annular post, the annular region between the inner wall of annular post and the reference column forms the spring groove, and the lower part of spring holds in the spring groove, and the punching press needle sets up the top at the annular post. The annular column provides lower limiting support of the lower die in the vertical direction, excessive compression of the spring is avoided, and meanwhile positioning of the spring is facilitated.

Preferably, the upper end of the punching hole is provided with a blanking window, and when the lower die assembly and the upper die are in a pressing state, the top end of the punching needle is higher than the bottom surface of the blanking window. The discharge of the cutting material is convenient, and the punching hole does not need to be cleaned frequently.

Preferably, the bottom surface of the blanking window is inclined, and one side of the bottom surface close to the upper die axis is higher than one side of the bottom surface far away from the upper die axis. The cut material falls to the outer part of the upper die along the inclined surface, the die structure is kept clean, and the phenomenon that the cut material extrudes, deforms or scratches the workpiece of the elliptical retainer in subsequent processing is avoided.

Preferably, when the spring naturally extends, the upper surface of the lower die is not higher than the upper surface of the positioning column. When the oval retainer workpiece to be punched is placed in the die, the positioning column can be directly sleeved with the oval retainer workpiece, the placing position does not need to be accurately adjusted, and the operation is convenient.

Preferably, the edge of the upper surface of the positioning column is chamfered. The chamfer structure can automatically center and adjust the position of the oval retainer when the lower die is pressed and descends.

Preferably, the upper surface of lower mould is equipped with the ball pocket groove that a certain amount evenly set up along circumference, and the ball pocket groove is half ellipsoid type for hold the ball pocket portion of the oval holder of treating processing, the lower surface of going up the mould be equipped with treat the half ellipsoid type arch of the ball pocket shape looks adaptation of the oval holder of processing. The shape of the bonding surface of the upper die and the lower die is matched with that of the oval retainer, so that the oval retainer is not deformed during punching.

Can find out through above technical scheme, the beneficial effects of the utility model are that: the position of the oval retainer can be automatically fixed in the punching process, and the oval retainer can be automatically reset after punching is finished, so that the punching site is more accurate, and the product quality is improved; the placing position of the elliptical retainer on the die does not need to be accurately adjusted, so that the adjusting time is saved, and the processing efficiency is improved; the punching needle bears the bending force little, non-deformable, and the punching press hole can in time discharge and cut the material simultaneously, avoids cutting the material pile in follow-up processing and extrudeing deformation or fish tail with oval retainer work piece inside the mould.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description 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 that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a top schematic view of an elliptical holder.

Fig. 2 is a schematic structural view of a ball pocket of an elliptical cage.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Fig. 6 is a schematic structural view of the punching die of the present invention during pressing.

In the figure: 1. the die comprises a lower die base, a lower die, a spring, a positioning column, an upper die, a column type groove, a guide sliding block, a pin, a ring-shaped column, a stamping pin, a stamping hole, a blanking window and a ball pocket groove, wherein the lower die base comprises 2 parts of the lower die, 3 parts of the spring, 4 parts of the positioning column, 5 parts of the upper die, 6 parts of the column type groove, 7 parts of the guide groove, 8 parts of the guide sliding block, 9 parts of the pin, 10 parts of the ring-shaped column, 11 parts of the stamping pin, 12 parts of the stamping hole, 13 parts of the blanking window and 14 parts of the ball pocket groove; 15. the ball-shaped roller comprises a ball pocket portion, 16 a flat plate portion, 17 rivet holes and 18 a ball-shaped roller.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 3-6, a self-positioning punching die for producing an oval retainer comprises a lower die assembly and an upper die 5, wherein the lower die assembly comprises a lower die base 1, a positioning column 4 is arranged at the center of the lower die base 1, a guide groove 7 is axially formed on the positioning column 4, the guide groove 7 is radially communicated with the positioning column 4 and divides the positioning column 4 into two parts, a pin hole is formed in the upper part of the positioning column 4, a pin 9 is installed in the pin hole, the axial direction of the pin hole is vertical to the horizontal length direction of the guide groove 7, a lower die 2 is sleeved on the positioning column 4, a guide slide block 8 is radially arranged inside the lower die 2, the guide slide block 8 is installed in the guide groove 7, the horizontal position of the guide block is positioned below the pin 9, the pin 9 plays a role in blocking, so that the lower die 2 cannot be separated from the positioning column 4 when sliding upwards on the positioning column 4, a spring 3 is installed between the lower die 2 and the lower die base 1, the spring 3 is sleeved on the positioning column 4, the upper end of the spring 3 is abutted against the bottom surface of the lower die 2, the lower end of the spring 3 is abutted against the lower die base 1, the lower die base 1 is further provided with an annular column 10, the annular column 10 and the positioning column 4 are coaxially arranged and surround the positioning column 4, the height of the annular column 10 is smaller than that of the positioning column 4, an annular area between the inner wall of the annular column 10 and the positioning column 4 forms a spring groove, the lower part of the spring 3 is accommodated in the spring groove and abuts against the annular column 10 when the lower die 2 moves downwards, the spring 3 is pressed into the spring groove and cannot be excessively compressed, a certain number of punching pins 11 are uniformly arranged at the top of the annular column 10 along the circumferential direction, and the lower die 2 is provided with through holes for the punching pins 11 to pass through; the upper die 5 is located right above the lower die 2, the upper die 5 is internally provided with a column-shaped groove 6, the inner diameter of the column-shaped groove 6 is matched with the diameter of the positioning column 4, when the punching die is in a press fit state as shown in fig. 6, the positioning column 4 is inserted into the column-shaped groove 6, the bottom surface of the upper die 5 is provided with a punching hole 12 matched with the punching needle 11, the upper end of the punching hole 12 is provided with a blanking window 13, when the lower die assembly and the upper die 5 are in the press fit state, the top end of the punching needle 11 is higher than the bottom surface of the blanking window 13, the bottom surface of the blanking window 13 is obliquely arranged, one side of the bottom surface, which is close to the axis of the upper die 5, is higher than one side of the bottom surface, which is far away from the axis of the upper die 5, so that the cut-off materials can be discharged.

Specifically, when the spring naturally extends, the upper surface of the lower die 2 is not higher than the upper surface of the positioning column 4, so that a worker can directly sleeve the positioning column when placing a retainer workpiece on the die without intentionally adjusting the position; and the edge of the upper surface of the positioning column 4 is chamfered, so that the positioning column can automatically center and align the workpiece through a chamfering structure in the punching process.

The structure of oval holder is as shown in fig. 1, fig. 2, and is the annular structure, including the ball pocket portion 15 that circumference evenly set up, ball pocket portion 15 is half ellipsoid type, and adjacent ball pocket portion 15 passes through the connection of flat plate portion 16, is equipped with rivet hole 17 on the flat plate portion 16, and this rivet hole 17 is exactly the hole that this mould will be processed, and two holders set up relatively, and two relative ball pocket portions 15 clamp spherical roller 18 in the middle to connect two holders fixedly through two relative rivet holes 17. The shape of adaptation in oval holder, the upper surface of lower mould 2 is equipped with the ball pocket groove 14 that a certain amount evenly set up along circumference, and ball pocket groove 14 is half ellipsoid type for the ball pocket portion 15 of oval holder, and the lower surface of going up mould 5 is equipped with the half ellipsoid type arch of the ball pocket portion 15 shape looks adaptation with oval holder, makes the holder not take place to warp when punching a hole.

The using method of the die comprises the steps that the oval retainer is placed on the lower die 2, the oval retainer is attached to the shape of the upper surface of the lower die 2, the ball pocket part 15 is located in the ball pocket groove 14, the lower die 2 is pressed down properly at the same time, the positioning column 4 is lifted relatively, the oval retainer is sleeved on the positioning column 4, and at the moment, the oval retainer is automatically centered and adjusted through chamfering, so that installation and positioning are completed; then punching is carried out, a pressure device presses down an upper die 5, the bottom surface of the upper die 5 contacts the upper surface of an elliptical retainer, a semi-elliptical bulge on the bottom surface of the upper die 5 is attached to the inner surface of a ball pocket part 15, a positioning column 4 is sleeved in the elliptical retainer ring in the pressing down process of the upper die 5 to keep the position of the elliptical retainer unchanged, a spring 3 is compressed along with the pressing down of the upper die, a punching needle 11 penetrates through a through hole in the lower die 2 and punches a hole on the elliptical retainer, the punching needle 11 is inserted into a punching hole 12 after penetrating through the elliptical retainer, the punching needle 12 pushes a punched cutting material to a blanking window 13, and the cutting material falls out of the die along the slope at the bottom of the blanking window 3; after the punching is finished, the upper die 5 rises, the spring 3 extends, the lower die 2 is communicated with the oval retainer to jack up and reset, and then the oval retainer which finishes the punching can be taken down.

The embodiment can show that the utility model has the advantages that the position of the oval retainer can be automatically fixed in the punching process, and the oval retainer can be automatically reset after punching is completed, so that the punching site is more accurate, and the product quality is improved; the placing position of the elliptical retainer on the die does not need to be accurately adjusted, so that the adjusting time is saved, and the processing efficiency is improved; the punching needle bears the bending force little, non-deformable, and the punching press hole can in time discharge and cut the material simultaneously, avoids cutting the material pile in follow-up processing and extrudeing deformation or fish tail with oval retainer work piece inside the mould.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The self-positioning punching die for producing the oval retainer is characterized by comprising a lower die assembly and an upper die (5), wherein the lower die assembly comprises a lower die base (1), a positioning column (4) is arranged at the center of the lower die base (1), a lower die (2) is sleeved on the positioning column (4), a spring (3) is installed between the lower die (2) and the lower die base (1), the spring (3) is sleeved on the positioning column (4), the upper end of the spring (3) is abutted against the bottom surface of the lower die (2), and the lower end of the spring (3) is abutted against the lower die base (1); the upper die (5) is positioned right above the lower die (2), a cylindrical groove (6) is formed in the upper die (5), and the inner diameter of the cylindrical groove (6) is matched with the diameter of the positioning column (4); punching press needle (11) of a certain amount evenly set up along circumference on lower mould base (1), be equipped with the confession on lower mould (2) through-hole that punching press needle (11) passed, the bottom surface of going up mould (5) be equipped with punching press needle (11) complex punching press hole (12).

2. The self-positioning punching die for the production of oval retainers according to claim 1, characterized in that the positioning post (4) is axially provided with a guide groove (7), the guide groove (7) radially penetrates the positioning post (4), a guide slide (8) is radially provided inside the lower die (2), and the guide slide (8) is mounted in the guide groove (7).

3. The self-positioning punching die for the production of oval retainers according to claim 2, characterized in that the upper part of the positioning post (4) is provided with a pin hole having an axial direction perpendicular to the horizontal length direction of the guide groove (7), a pin (9) is fitted in the pin hole, and the horizontal position of the guide slider (8) is located below the pin (9).

4. The self-positioning punching die for the production of an elliptical holder according to any of claims 1-3 characterized in that an annular post (10) is further provided on the lower die base (1), the annular post (10) is arranged coaxially with the positioning post (4), the height of the annular post (10) is smaller than the height of the positioning post (4), the annular area between the inner wall of the annular post (10) and the positioning post (4) forms a spring groove, the lower part of the spring (3) is accommodated in the spring groove, the punching pin (11) is arranged on top of the annular post (10).

5. The self-positioning punching die for the production of an oval retainer according to any one of claims 1 to 3, wherein a blanking window (13) is provided at an upper end of the punching hole (12), and when the lower die assembly and the upper die (5) are in a press-fit state, a top end of the punching pin (11) is higher than a bottom surface of the blanking window (13).

6. The self-positioning punching die for the production of oval holders according to claim 5, characterized in that the bottom surface of the blanking window (13) is disposed obliquely, and one side of the bottom surface close to the axis of the upper die (5) is higher than one side of the bottom surface away from the axis of the upper die (5).

7. The self-positioning punching die for the production of an elliptical holder according to any of claims 1 to 3 characterized in that the upper surface of the lower die (2) is not higher than the upper surface of the positioning post (4) when the spring is naturally elongated.

8. The self-positioning punching die for the production of oval holders according to any of claims 1-3, characterized in that the upper surface edges of the positioning posts (4) are chamfered.

9. The self-positioning punching die for the production of the elliptical holders according to any one of claims 1 to 3, characterized in that the upper surface of the lower die (2) is provided with a certain number of ball pocket grooves (14) uniformly arranged along the circumferential direction, the ball pocket grooves (14) are semi-ellipsoidal for accommodating the ball pocket portions of the elliptical holders to be machined, and the lower surface of the upper die (5) is provided with semi-ellipsoidal protrusions adapted to the shape of the ball pocket portions of the elliptical holders to be machined.