Riveting auxiliary device for lining on large raceway

Abstract

The invention discloses a large raceway upper lining rivet turning auxiliary device which comprises a base and a rivet turning head, a pressing mechanism used for pressing a raceway on the vertical face of the base is connected to 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 invention belongs to the technical field of mechanical manufacturing, and in particular relates to a riveting auxiliary device for a bushing on a large raceway. 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 lead to deformation of the bushing used to support the roller, surface indentations 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. Summary of the invention

[0003] Purpose of the Invention

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

[0005] Inventing technical solutions

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

[0007] Preferably, diamond-shaped positioning pins and positioning shafts are vertically arranged on the base for positioning the raceway bushing to be processed and the inner holes of the adjacent raceway bushings 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 connecting line between 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 clamping positions of the raceways on the base, and the clamping mechanism comprises a plurality of clamping screws horizontally threadedly connected to the vertical plates, and the clamping 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 used to press the raceway.

[0012] Preferably, a groove is provided on the base adjacent to the vertical surface, a guard plate is arranged 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 riveting head is installed on the machine tool and can be driven by the machine tool to rotate, move up and down.

[0016] The invention has the advantages that the device has a simple structure and is easy to operate, and can well solve the riveting problem of the bushing on a large raceway. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural 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 machined part is installed.

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

[0022] Figure 6 Schematic diagram of the workpiece and the 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 present invention 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 clamping screw 2, a smooth pressure block 3, a small pad 4, a diamond locating 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 locating shaft 13, a large pad 14, a locating key 15, and a riveting head 16.

[0027] The small pad 4 and the large pad 14 are fixed on 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 the small pad 4 and the large pad 14 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 a large cushion block 14 and a positioning hole on the base 1; one end of the diamond positioning pin 5 is fixed by a small cushion plate 4 and a 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 connecting line of the two tips of the diamond positioning pin 5 is colinear 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] There are four vertical plates on one side of the base 1, which have five screw holes. After the clamping screw 2 passes horizontally through the threaded hole on the upper part of the vertical plate, the smooth clamping block 3 is installed at the end of the clamping screw 2 to form five clamping mechanisms. The smooth clamping block 3 increases the clamping area of ​​the clamping mechanism on the raceway. The five clamping mechanisms are distributed on both sides of the positioning shaft 13 to ensure that after the raceway is installed, the raceway is relatively evenly clamped relative to both sides of the positioning shaft 13 within a sufficient distance range, so that the raceway does not shake during the riveting process.

[0030] The base 1 has a U-shaped groove at each end, and one end of the screw rod 6 passes through the U-shaped groove and is fixed on the positioning key 15, wherein the positioning key 15 is installed in the U-shaped key groove of the machine tool, and is used for positioning and installing the base 1 to ensure that the transverse axis of the base coincides with the working axis of the machine tool; the other end of the screw rod 6 protrudes from the U-shaped groove of the base 1, and the base 1 is fixed on the machine tool with a nut 7, a washer 8, and a spring washer 9. The washer 8 and the spring washer 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 when it is pressed.

[0032] The rivet head 16 is installed on the machine tool. 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 of 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 size 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 undergo 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 bushing riveting auxiliary device for a large raceway of the present invention is adopted, and its working principle is as follows: 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 worktable, and then pass the screw rod 6 through the U-slot of the base 1, and gently lock it with the nut 7, washer 8, and spring washer 9; 2. Put the raceway bushing to be processed and the adjacent bushing on the positioning shaft 13 and the diamond positioning pin 5 to form the positioning of the raceway, and then rotate the clamping screws 2 respectively, and clamp the raceway 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 at the same time loosen the nut 7 to adjust the base along the direction of the T-slot of the machine tool. 1. Make the conical guide surface of the riveting head 16 insert into the inner hole of the bushing of the raceway to be riveted, then withdraw the riveting head 16 and tighten the nut 7 to complete the tool alignment of the riveting head 16 to the raceway bushing; 4. Lift the riveting head 16 to a suitable processing position, start the machine tool, rotate the riveting head 16, and start the riveting process of the raceway bushing; 5. After the riveting is completed, raise the riveting head 16 to an appropriate height, rotate the clamping screws 2 respectively, loosen the clamping 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 clamp the raceway; 6. Repeat the above 4 and 5 operations until all the bushings on the raceway are riveted.

[0034] The clamping mechanism is composed of clamping screws and smooth clamping blocks, which increases the clamping area of ​​the raceway. The five clamping mechanisms installed on the base are used to clamp the raceway within a sufficiently long range to prevent the raceway from shaking during riveting. The raceway is positioned on the auxiliary device using a cylindrical positioning shaft and a diamond positioning pin. The auxiliary device is positioned longitudinally on the machine tool using a positioning key installed in the T-slot of the machine tool. The auxiliary device is fixed on the machine tool using screws, nuts, washers, etc. installed on the positioning key. The bottom surface of the raceway is protected during clamping using a polyethylene guard plate, and the raceway bushing is riveted using a unique riveting head structure.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable technicians familiar with the technical field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be included in the protection scope of the present invention. The technology, shape, and structure parts not described in detail in the present invention are all well-known technologies.

Claims

1. A large raceway upper 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 clamping mechanism for clamping a raceway on a vertical surface of the base (1). After the raceway is clamped 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 end of the inner hole of the raceway bushing is plastically deformed and bent 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 bent 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: The base (1) is vertically provided with a diamond-shaped positioning pin (5) and a positioning shaft (13) for positioning the raceway bushing to be processed and the inner hole of the adjacent raceway bushing on the raceway.

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 4, characterized in that: A plurality of vertical plates are arranged on the base (1), and the vertical plates and the roller track are clamped on the base (1) at positions opposite to each other. The clamping mechanism comprises a plurality of clamping screws (2) connected to the vertical plates by horizontal threads, and the clamping screws are distributed on both sides of the diamond-shaped positioning pin (5) and the positioning shaft (13).

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

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. A large raceway upper bushing riveting auxiliary device as claimed in claim 1, characterized in that: The diameter of the intersection of the conical guide surface of the riveting head (16) 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.

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

10. A large raceway upper bushing riveting auxiliary device as claimed in 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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