Riveting auxiliary device for lining on large raceway

Abstract

The utility model discloses a large raceway upper lining rivet turning auxiliary device which comprises a base and a rivet turning head, the base is connected with a pressing mechanism used for pressing a raceway on the vertical face of the base, and after the raceway is pressed on the base, an inner hole of a raceway lining is in the vertical direction. The front end of the rivet turning head is in smooth connection with a concave arc groove used for performing rivet turning on the raceway bush through a conical guide face with the small lower portion and the large upper portion, and after the front end of the rivet turning head stretches into an inner hole of the raceway bush, the rivet turning head rotates and applies pressure to the inner wall of one end of the inner hole of the raceway bush, so that the end of the inner hole of the raceway bush generates plastic deformation. The roller path lining is bent outwards along the inwards-concave arc groove of the rivet turning head until the inner hole wall of the roller path lining is completely turned outwards, the bent arc of the inner hole wall of the roller path lining is attached to the inwards-concave arc groove of the rivet turning head, and the outwards-turned edge is attached to the roller path shaft seat. The device is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing, and in particular relates to a large-scale raceway upper bushing riveting auxiliary device. Background Art

[0002] After installation, the bushing used to support the roller on the large raceway needs to be flanged at one end to fix the roller and prevent it from falling off the bushing. In the prior art, a special flanging die is often used to perform flanging on a press, but this method can easily cause deformation of the bushing used to support the roller, indentations on the surface and other quality problems. With the development of technology, special riveting machines are now mostly used for flanging, but the working platform of the riveting machine is small, and for large raceways, it cannot be completely placed on the platform. Therefore, a special auxiliary device needs to be designed for positioning and fixing large raceways. In addition, a special riveting head needs to be designed for riveting according to the actual size of the raceway bushing and the flanging style. Utility Model Content

[0003] Purpose of the utility model

[0004] In order to solve the problem of flanging of a bushing for supporting a roller on a large raceway, the utility model provides a bushing flanging riveting auxiliary device on a large raceway.

[0005] Utility model technology solutions

[0006] A large-scale raceway upper sleeve riveting auxiliary device comprises a base and a riveting head. The base is connected to a clamping mechanism for pressing the raceway against the vertical surface of the base. After the raceway is pressed against the base, the inner hole of the raceway bushing is in the vertical direction. The front end of the riveting head is smoothly connected by a conical guide surface which is smaller at the bottom and larger at the top and an inner concave arc groove for riveting the raceway bushing. After the front end of the riveting head is inserted into the inner hole of the raceway bushing, the riveting head rotates and applies pressure to the inner wall of one end of the inner hole of the raceway bushing, causing the end of the inner hole of the raceway bushing to undergo plastic deformation and bend outward along the inner concave arc groove of the riveting head until the inner hole wall of the raceway bushing is completely turned outward, and the bent arc of the inner hole wall of the raceway bushing fits with the inner concave arc groove of the riveting head, and the turned-out edge fits with the raceway shaft seat.

[0007] Preferably, a diamond-shaped positioning pin and a positioning shaft are vertically provided on the base for positioning the raceway bushing to be processed and the inner hole of the adjacent raceway bushing on the raceway.

[0008] Preferably, the diamond-shaped positioning pin and the positioning shaft are respectively arranged on a small pad and a large pad connected to the base at the same height.

[0009] Preferably, the clamping mechanism comprises a positioning shaft axis and a diamond positioning pin axis, the distance between which is equal to the distance between two adjacent raceway bushings on the raceway, and a line connecting the two tips of the diamond positioning pin intersects with the positioning shaft axis.

[0010] Preferably, a plurality of vertical plates are provided on the base, the vertical plates are opposite to the pressing positions of the raceways on the base, and the pressing mechanism includes a plurality of horizontally threaded pressing screws connected to the vertical plates, and the pressing screws are distributed on both sides of the diamond locating pin and the locating shaft.

[0011] Preferably, a smooth pressing block is fixed to the end of the pressing screw for pressing the raceway.

[0012] Preferably, a groove is provided on the base adjacent to the vertical surface, a guard plate is provided in the groove, and the guard plate is in contact with the vertical surface.

[0013] Preferably, the diameter of the intersection of the conical guide surface of the rivet head and the concave arc groove is equal to the inner hole diameter of the raceway bushing, and the radius of the concave arc groove is equal to the arc radius of the flanged curved part of the raceway bushing after riveting.

[0014] Preferably, the outer edge of the front end of the rivet head is a rounded structure.

[0015] Preferably, the base has two U-shaped grooves, one end of the screw passes through the U-shaped groove and is fixed on the positioning key, the positioning key can be installed in the U-shaped keyway of the machine tool, the rivet head is installed on the machine tool and can be driven by the machine tool to rotate, move up and down.

[0016] The utility model has the advantages that the device has a simple structure and is easy to operate, and well solves the problem of riveting of bushings on large raceways. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a large-scale raceway upper bushing riveting auxiliary device.

[0018] Figure 2 for Figure 1 A-direction view.

[0019] Figure 3 This is a view of the shaft without the rivet head.

[0020] Figure 4 This is the shaft view after the workpiece is installed.

[0021] Figure 5 This is the base axis view.

[0022] Figure 6 Schematic diagram of the workpiece and rivet head before and after riveting.

[0023] Figure 7 This is a schematic diagram of the riveting head and workpiece structure.

[0024] In the figure: 1-base, 2-pressing screw, 3-smooth pressure block, 4-small pad, 5-diamond positioning pin, 6-screw, 7-nut, 8-washer, 9-spring washer, 10-guard plate, 11-screw, 12-cylindrical pin, 13-positioning shaft, 14-large pad, 15-positioning key, 16-rivet head. DETAILED DESCRIPTION

[0025] The utility model is achieved through the following technical solutions.

[0026] As shown in the figure, a large raceway upper bushing riveting auxiliary device includes a base 1, a tightening screw 2, a smooth pressure block 3, a small pad 4, a diamond-shaped positioning pin 5, a screw 6, a nut 7, a washer 8, a spring washer 9, a guard plate 10, a screw 11, a cylindrical pin 12, a positioning shaft 13, a large pad 14, a positioning key 15, and a riveting head 16.

[0027] The small pad 4 and the large pad 14 are fixed to the base 1 by screws 11 and cylindrical pins 12; the small pad 4 and the large pad 14 are of the same height, and are used to support the raceway during the riveting process of the raceway bushing.

[0028] One end of the positioning shaft 13 is fixed by the large pad 14 and the positioning hole on the base 1; one end of the diamond positioning pin 5 is fixed by the small pad 4 and the positioning hole on the base 1; the distance between the axis of the positioning shaft 13 and the diamond positioning pin 5 is the distance between the axes of two adjacent raceway bushings on the raceway, and the line connecting the two tips of the diamond positioning pin 5 is collinear with the center of the top surface of the positioning shaft 13, so that the combination of the positioning shaft 13 and the diamond positioning pin 5 forms a positioning installation for the raceway.

[0029] One side of the base 1 features four vertical plates with five screw holes. After compression screws 2 are inserted horizontally through the threaded holes in the upper portions of the vertical plates, smooth pressure blocks 3 are attached to the ends of the compression screws 2, forming five clamping mechanisms. These smooth pressure blocks 3 increase the area of ​​compression applied to the raceway. These five clamping mechanisms are located on both sides of the positioning shaft 13, ensuring that after the raceway is installed, it is evenly compressed relative to both sides of the positioning shaft 13 within a sufficient distance, preventing any movement during riveting.

[0030] The base 1 has a U-shaped slot at each end. One end of a screw 6 passes through the U-shaped slot and is fixed to a positioning key 15. The positioning key 15 is installed in the U-shaped keyway of the machine tool to position the base 1 and ensure that the base's transverse axis coincides with the machine tool's working axis. The other end of the screw 6 protrudes from the U-shaped slot of the base 1. The base 1 is fixed to the machine tool using a nut 7, washer 8, and spring washer 9. Washers 8 and spring washers 9 are mainly used to prevent the base 1 from loosening due to vibration during the riveting process.

[0031] The guard plate 10 is inserted into the groove on the other side of the base 1. The material of the guard plate 10 is polyethylene. Its purpose is to protect the raceway from surface defects on its contact surface when it is pressed.

[0032] The rivet head 16 is installed on the machine tool, and the front end of the rivet head 16 is smoothly connected by a conical guide surface with a small bottom and a large top and an inner concave arc groove for riveting the raceway bushing. The conical guide surface is located at the lower part of the rivet head 16 to facilitate the insertion of the rivet head 16 into the raceway bushing hole during riveting; the diameter D at the intersection of the conical guide surface of the rivet head 16 and the inner concave arc groove is equal to the inner hole diameter D1 of the raceway bushing, and the radius R of the inner concave arc groove is consistent with the arc radius R1 of the flange bending part of the raceway bushing after riveting, which ensures the dimensional requirements after riveting; the outer edge of the front end of the rivet head 16 is a rounded structure to prevent the rivet head 16 from scratching the surface of the raceway bushing during the riveting process. The rivet head 16 is driven by the machine tool to rotate and move up and down. When the front end of the rivet head 16 extends into the inner hole of the raceway bushing, its tapered guide surface and the concave arc groove contact the inner hole wall of the raceway bushing. As the rivet head 16 rotates, it applies pressure to the inner wall of one end of the inner hole of the raceway bushing, causing the end of the inner hole of the raceway bushing to produce plastic deformation and bend outward along the concave arc groove of the rivet head 16 until the inner hole wall of the raceway bushing is completely turned outward, and its bent arc fits with the concave arc groove of the rivet head 16, and the turned-out edge of the raceway bushing fits with the raceway shaft seat.

[0033] In actual use, the utility model is used to adopt the large-scale rolling track bushing riveting auxiliary device, and its working principle is: 1. Fix one end of the screw rod 6 on the positioning key 15, and then slide the positioning key 15 along the T-slot of the machine tool workbench, and then pass the U-slot of the base 1 through the screw rod 6, and lightly lock it with the nut 7, washer 8, and spring washer 9; 2. Put the bushing to be processed on the rolling track and the adjacent bushing on the positioning shaft 13 and the diamond positioning pin 5 to form the positioning of the rolling track, and then rotate the tightening screw 2 respectively to press the rolling track through the smooth pressure block 3; 3. Install the riveting head 16 on the machine tool, start the machine tool, move the riveting head 16 up and down, and loosen the nut 7 at the same time to adjust the bottom along the direction of the T-slot of the machine tool. Seat 1 enables the conical guide surface of the rivet head 16 to be inserted into the inner hole of the bushing of the raceway to be riveted, and then the rivet head 16 is withdrawn and the nut 7 is tightened to complete the tool setting of the rivet head 16 on the raceway bushing; 4. Lift the rivet head 16 to a suitable processing position, start the machine tool, rotate the rivet head 16, and start the riveting process of the raceway bushing; 5. After the riveting is completed, lift the rivet head 16 to an appropriate height, rotate the clamping screws 2 respectively, loosen the pressure on the raceway, lift the raceway, move it forward, insert the next bushing to be riveted onto the positioning shaft 13, and then rotate the clamping screws 2 respectively to make the smooth pressure block 3 press the raceway; 6. Repeat the above operations 4 and 5 until all the bushings on the raceway are riveted.

[0034] The clamping mechanism, composed of a clamping screw and a smooth clamping block, increases the raceway's clamping area. Five clamping mechanisms mounted on the base provide compression over a sufficient length of the raceway, preventing it from shaking during riveting. A cylindrical locating shaft and diamond-shaped locating pins position the raceway on the auxiliary device. A locating key installed in the machine's T-slot allows for longitudinal positioning of the auxiliary device. The screw, nut, and gasket attached to the locating key secure the auxiliary device to the machine. A polyethylene guard protects the raceway's underside during compression, and a unique riveting head structure allows for riveting of the raceway bushing.

[0035] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. All equivalent changes or modifications based on the spirit and essence of the present invention are included in the scope of protection of the present invention. The technologies, shapes, and structures not described in detail in this utility model are well known.

Claims

1. A large raceway bushing riveting auxiliary device, characterized in that: The invention comprises a base (1) and a rivet head (16). The base (1) is connected with a pressing mechanism for pressing the raceway on the vertical surface of the base (1). After the raceway is pressed on the base (1), the inner hole of the raceway bushing is in the vertical direction. The front end of the rivet head (16) is smoothly connected by a conical guide surface with a small bottom and a large top and an inner concave arc groove for riveting the raceway bushing. After the front end of the rivet head (16) is inserted into the inner hole of the raceway bushing, the rivet head (16) rotates and applies pressure to the inner wall of one end of the inner hole of the raceway bushing, so that the inner hole end of the raceway bushing is plastically deformed and bends outward along the inner concave arc groove of the rivet head (16) until the inner hole wall of the raceway bushing is completely turned outward. The curved arc of the inner hole wall of the raceway bushing fits with the inner concave arc groove of the rivet head (16), and the turned-out edge fits with the raceway shaft seat.

2. A large raceway upper bushing riveting auxiliary device as claimed in claim 1, characterized in that: A diamond-shaped positioning pin (5) and a positioning shaft (13) for positioning a raceway bushing to be processed and an inner hole of an adjacent raceway bushing on the raceway are vertically arranged on the base (1).

3. A large raceway upper bushing riveting auxiliary device as claimed in claim 2, characterized in that: The diamond-shaped positioning pin (5) and the positioning shaft (13) are respectively arranged on a small pad (4) and a large pad (14) connected to the base (1) at the same height.

4. A large raceway upper bushing riveting auxiliary device as claimed in claim 3, characterized in that: The clamping mechanism includes a positioning shaft (13) and a diamond positioning pin (5) whose axis is equal to the distance between two adjacent raceway bushings on the raceway, and a connecting line of two tips of the diamond positioning pin (5) intersects with the positioning shaft (13) axis.

5. A large raceway upper bushing riveting auxiliary device as claimed in claim 3, characterized in that: A plurality of vertical plates are provided on the base (1), and the vertical plates are opposite to the pressing positions of the raceway on the base (1). The pressing mechanism includes a plurality of horizontally threaded pressing screws (2) connected to the vertical plates, and the pressing screws are distributed on both sides of the diamond-shaped positioning pin (5) and the positioning shaft (13).

6. A large raceway bushing riveting auxiliary device as claimed in claim 5, characterized in that: The pressing screw (2) is used to press the end of the raceway, and a smooth pressing block (3) is fixed thereon.

7. A large raceway upper bushing riveting auxiliary device as claimed in claim 5, characterized in that: A groove is provided on the base (1) adjacent to the vertical surface, a guard plate (10) is arranged in the groove, and the guard plate (10) is fitted with the vertical surface.

8. The large raceway upper bushing riveting auxiliary device according to claim 1, characterized in that: The diameter of the intersection of the conical guide surface of the turning riveting head (16) and the inner concave arc groove is equal to the inner hole diameter of the raceway bushing, and the radius of the inner concave arc groove is equal to the arc radius of the flanging bending part of the raceway bushing after turning riveting.

9. The large raceway upper bushing riveting auxiliary device according to claim 1, characterized in that: The outer edge of the front end of the rivet head (16) is a rounded structure.

10. A large raceway upper bushing riveting auxiliary device according to claim 1, characterized in that: The base (1) is provided with two U-shaped grooves, one end of a screw rod (6) passes through the U-shaped groove and is fixed on a positioning key (15), the positioning key (15) can be installed in the U-shaped keyway of a machine tool, and a riveting head (16) is installed on the machine tool and can be driven by the machine tool to rotate, move up and down.

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