Cylindrical roller bearing riveting device

Abstract

The present invention relates to a bearing assembly device, and specifically to the assembly of a cast iron cage cylindrical roller bearing, and belongs to the field of bearing mechanical technology, and specifically to a cylindrical roller bearing riveting device, comprising a press seat and a press cover, wherein the bearing assembly to be assembled is installed between the press seat and the press cover, and the outer edge of the press cover is provided with a downwardly protruding annular top pressure block, and the annular top pressure block is matched with the riveting part of the bearing assembly to be assembled; the press seat supports the bearing assembly to be assembled, and a buffer device is provided in the press seat. The riveting device of the present invention can effectively ensure the rotation accuracy of the bearing after assembly, and the riveting is formed in one step, and the riveting surface is uniform and stable, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to a bearing assembly device, in particular to the assembly of a cast iron retainer cylindrical roller bearing, and belongs to the technical field of bearing machinery. Background Art

[0002] The cylindrical roller bearing with cast iron cage consists of an inner ring, an outer ring, a group of rolling elements, two cage retaining rings, and a group of pillars. During assembly, a cage retaining ring and a pillar are first riveted together, and then the riveted cage assembly is installed into the rolling element and the outer ring or inner ring. Finally, the other cage retaining ring needs to be installed into the riveted bearing assembly. During the riveting process, it is necessary to ensure that the riveting is firm and does not protrude from the inner or outer ring end face of the bearing, and the rotation accuracy of the bearing must be ensured. The existing assembly tooling cannot ensure good bearing assembly accuracy, which affects assembly efficiency. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the object of the present invention is to provide a cylindrical roller bearing riveting device to assist the bearing assembly riveting and improve the bearing assembly accuracy.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cylindrical roller bearing riveting device, including a pressure seat and a pressure cover, the bearing assembly to be assembled is installed between the pressure seat and the pressure cover, and the outer edge of the pressure cover is provided with a downwardly protruding annular top pressure block, and the annular top pressure block cooperates with the riveting part of the bearing assembly to be assembled; the pressure seat supports the bearing assembly to be assembled, and a buffer device is provided inside the pressure seat.

[0005] Furthermore, the pressure seat includes an internal pressure centering body, an external pressure body and a rivet die body, the rivet die body corresponds to the retaining frame support, the internal pressure centering body is slidably connected to the inner wall of the rivet die body, and a buffer device is arranged at the bottom of the internal pressure centering body; the external pressure body is slidably connected to the outer wall of the rivet die body, and a buffer device is arranged at the bottom of the external pressure body; the internal pressure centering body, the external pressure body, the rivet die body and the bearing assembly to be assembled are coaxially arranged.

[0006] Furthermore, the rivet die main body includes an annular body corresponding to the retaining frame support and a mounting seat at the bottom of the annular body, the internal pressure centering body is slidably connected to the inner wall of the annular body, and a buffer device is arranged between the internal pressure centering body and the mounting seat; the external pressure body is slidably connected to the outer wall of the annular body, and a buffer device is arranged between the external pressure body and the mounting seat.

[0007] Furthermore, an axial connecting through hole is provided on the internal pressure centering body, and a screw axially connects the internal pressure centering body and the mounting seat; an axial connecting through hole is provided on the external pressure body, and a screw axially connects the external pressure body and the mounting seat; the screw slides in the connecting through hole and is limited by the screw head.

[0008] Furthermore, an annular sliding surface is downwardly provided on the outer edge of the outer pressure body, and the sliding surface is slidably matched with the outer diameter of the mounting seat.

[0009] Furthermore, an outer support ring protruding upward is provided on the inner edge of the outer pressure body, and an upper end surface of the outer support ring contacts and supports the outer edge of the assembled retaining ring.

[0010] Furthermore, the internal pressure centering body is provided with a lower stop that matches the inner diameter of the bearing assembly to be assembled, and the outer edge of the internal pressure centering body is provided with an upwardly protruding inner support ring, the upper end face of the inner support ring is in contact with and supported by the inner edge of the assembled retaining ring, and a space for accommodating the inner ring of the bearing is formed between the inner support ring and the lower stop.

[0011] Furthermore, the gland is provided with an upper stopper matched with the inner diameter of the bearing assembly to be assembled, the annular top pressing block is pressed against the retaining ring to be assembled, and a space for accommodating the inner ring of the bearing is formed between the upper stopper and the annular top pressing block.

[0012] Furthermore, the buffer device is an axially arranged spring, and the spring is installed in an axially arranged buffer groove.

[0013] Furthermore, a handle is provided on the pressure seat.

[0014] The beneficial effects of the present invention are as follows: the riveting device of the present invention can effectively ensure the rotation accuracy of the bearing after assembly, the riveting is formed in one step, the riveting surface is uniform and stable, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] In the figure: 1 gland, 1.1 annular top pressure block, 1.2 upper stopper, 2 internal pressure centering body, 2.1 lower stopper, 2.2 inner support ring, 3 outer pressure body, 3.1 sliding surface, 3.2 outer support ring, 4 rivet mold body, 4.1 annular body, 4.2 mounting seat, 5 spring, 6 screw, 7 handle, 8 riveted bearing assembly, 9 connecting through hole, 10 buffer groove. DETAILED DESCRIPTION

[0017] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] See attached Figure 1 The cylindrical roller bearing riveting device comprises a pressure seat and a pressure cover 1, the bearing assembly 8 to be assembled is installed between the pressure seat and the pressure cover 1, the outer edge of the pressure cover is provided with a downwardly protruding annular top pressure block 1.1, and the annular top pressure block 1.1 cooperates with the riveting part of the bearing assembly to be assembled; the pressure seat supports the bearing assembly to be assembled, and a spring 5 for buffering is provided in the pressure seat.

[0019] Based on the above technical solution, the pressure seat supports the assembled retaining ring and reserves space for the pillar to be pushed out. The inner ring, outer ring and roller of the bearing are in a suspended state. All supporting and clamping forces act on the washers on both sides and the middle pillar, providing good supporting force for riveting.

[0020] Furthermore, the pressure seat includes an internal pressure centering body 2, an external pressure body 3 and a rivet die body 4, the rivet die body 4 corresponds to the retaining frame support, the internal pressure centering body 2 is slidably connected to the inner wall of the rivet die body 4, and a spring 5 for buffering is arranged at the bottom of the internal pressure centering body 2; the external pressure body 3 is slidably connected to the outer wall of the rivet die body 4, and a spring 5 for buffering is arranged at the bottom of the external pressure body 3, the internal pressure centering body 2, the external pressure body 3, the rivet die body 4 and the bearing assembly to be assembled are coaxially arranged.

[0021] Furthermore, the rivet mold body includes an annular body 4.1 corresponding to the retaining frame support and a mounting seat 4.2 at the bottom of the annular body, the internal pressure centering body 2 is slidably connected to the inner wall of the annular body 4.1, and a spring 5 for buffering is arranged between the internal pressure centering body 2 and the mounting seat 4.2; the external pressure body 3 is slidably connected to the outer wall of the annular body 4.1, and a spring 5 for buffering is arranged between the external pressure body 3 and the mounting seat 4.2.

[0022] Based on the above technical solution, when the spring is in the released state, the upper surfaces of the internal pressure centering body 2 and the external pressure body 3 close to the annular body protrude from the upper surface of the annular body 4.1, and a concave cavity is formed at the annular body 4.1. The end of the pillar protruding from the surface of the assembled retaining ring is clamped in the concave cavity. At the same time, the lower surfaces of the internal pressure centering body 2 and the external pressure body 3 are spaced a distance from the upper surface of the mounting seat 4.2 and are supported by the spring 5, thereby reserving a certain space for the internal pressure centering body 2 and the external pressure body 3 to slide down during the riveting process of the punch.

[0023] Furthermore, an axial connecting through hole 9 is provided on the internal pressure centering body 2, and a screw 6 axially connects the internal pressure centering body 2 and the mounting seat 4.2; an axial connecting through hole 9 is provided on the external pressure body 3, and a screw 6 axially connects the external pressure body 3 and the mounting seat 4.2; the screw 6 slides in the connecting through hole 9 and is limited by the screw head.

[0024] Based on the above technical solution, when the internal pressure centering body 2 and the external pressure supporting body 3 slide down, the screw 6 remains stationary, and the connecting through hole 9 is guided by the screw. When the internal pressure centering body 2 and the external pressure supporting body 3 slide up, the connecting through hole 9 contacts and limits the screw head at the extreme position.

[0025] Furthermore, the outer edge of the outer pressure body 3 is downwardly provided with an annular sliding surface 3.1, and the sliding surface 3.1 is slidably matched with the outer diameter of the mounting seat 4.2. The sliding surface 3.1 is limited at the limit position

[0026] Furthermore, an outer support ring 3.2 protruding upward is provided on the inner edge of the outer pressure body 3, and the upper end surface of the outer support ring contacts and supports the outer edge of the assembled retaining ring.

[0027] Furthermore, the internal pressure centering body 2 is provided with a lower stop 2.1 which matches the inner diameter of the bearing assembly to be assembled, and the outer edge of the internal pressure centering body is provided with an upwardly protruding inner support ring 2.2, the upper end face of the inner support ring is in contact with and supported by the inner edge of the assembled retaining ring, and a space for accommodating the inner ring of the bearing is formed between the inner support ring 2.2 and the lower stop 2.1.

[0028] Furthermore, the gland is provided with an upper stop 3.3 matching the inner diameter of the bearing assembly to be assembled, the annular pressing block 1.1 is pressed against the retaining ring to be assembled, and a space for accommodating the inner ring of the bearing is formed between the upper stop 1.2 and the annular pressing block 1.1.

[0029] Based on the above technical solution, the upper retaining ring is the retaining ring to be assembled, and the lower retaining ring is the assembled retaining ring. The inner support ring 2.2 and the outer support ring 3.2 are supported on the assembled retaining ring, and a recessed cavity of the pillar end protruding from the surface of the assembled retaining ring is formed between the inner support ring 2.2 and the outer support ring 3.2.

[0030] Furthermore, the spring 5 is axially arranged, and the spring 5 is installed in an axially arranged buffer groove 10, which is an axial groove of the internal pressure centering body 2 and the external pressure body 3, providing guidance for the compression and release of the spring to prevent deviation.

[0031] Furthermore, a handle 8 is provided on the pressure seat.

[0032] Working process: Place the bearing assembly to be assembled with the riveted surface facing up and the riveted surface facing down on the riveting device, align the pillar part of the riveted surface with the riveted die body, then place the retaining ring on the pillar of the unriveted surface, place the gland 1 on the bearing assembly, push the riveting device under the press punch, start the press punch, press the press punch directly on the gland 1 of the riveting device, lift the punch, push out the riveting device, take off the gland, take out the product, and the assembly of a set of bearing products is completed. The riveting device ensures that the assembled pillar does not protrude from the end face of the bearing ring, ensures the assembly accuracy of the bearing, ensures that the riveted surface is uniform and beautiful, reduces the scrap rate, and improves production efficiency due to one-time riveting.

[0033] Function of the spring: The punch of the press compresses the pillar and then bounces it up, which plays a buffering role, so that a certain gap is generated between the two retainer rings and the rollers to ensure the rotation accuracy of the bearing after riveting. Several groups of springs 5 ​​are evenly arranged along the ring.

[0034] Function of screws: connect the external pressure body, the internal pressure centering body and the riveting die body to play a fastening role. Several groups of screws are evenly arranged along the ring.

[0035] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. Cylindrical roller bearing riveting device, Features: It includes a pressure seat and a pressure cover, and the bearing assembly to be assembled is installed between the pressure seat and the pressure cover, and the outer edge of the pressure cover is provided with a downwardly protruding annular top pressure block, which cooperates with the riveted joint of the bearing assembly to be assembled; the pressure seat supports the bearing assembly to be assembled, and a buffer device is provided in the pressure seat; the pressure seat includes an internal pressure centering body, an external pressure body and a rivet die main body, and the rivet die main body corresponds to the retaining frame pillar, the internal pressure centering body is slidably connected to the inner wall of the rivet die main body, and a first buffer device is provided at the bottom of the internal pressure centering body; the external pressure body is slidably connected to the outer wall of the rivet die main body, and a second buffer device is provided at the bottom of the external pressure body; the internal pressure centering body, the external pressure body, the rivet die main body and the bearing assembly to be assembled are coaxially arranged; the rivet die main body includes an annular body corresponding to the retaining frame pillar and a mounting seat at the bottom of the annular body, the internal pressure centering body is slidably connected to the inner wall of the annular body, and a A first buffer device is provided; the outer pressure body is slidably connected to the outer wall of the annular body, and a second buffer device is provided between the outer pressure body and the mounting seat; an axial connecting through hole is provided on the internal pressure centering body, and the first screw connects the internal pressure centering body and the mounting seat axially. The outer pressure body is provided with an axial connecting through hole, and the second screw connects the outer pressure body and the mounting seat axially, and the first screw and the second screw slide in the corresponding connecting through hole and are limited by the screw head; the inner edge of the outer pressure body is provided with an outer support ring protruding upward, and the upper end face of the outer support ring is in contact with and supported by the outer edge of the assembled retaining ring; the internal pressure centering body is provided with a lower stop matching the inner diameter of the bearing assembly to be assembled, and the outer edge of the internal pressure centering body is provided with an inner support ring protruding upward, and the upper end face of the inner support ring is in contact with and supported by the inner edge of the assembled retaining ring, and a space for accommodating the inner ring of the bearing is formed between the inner support ring and the lower stop.

2. The cylindrical roller bearing riveting device according to claim 1, Features: An annular sliding surface is arranged downwardly on the outer edge of the outer pressure body, and the sliding surface is slidably matched with the outer diameter of the mounting seat.

3. The cylindrical roller bearing riveting device according to claim 1, Features: The gland is provided with an upper stopper matched with the inner diameter of the bearing assembly to be assembled, the annular top pressing block is pressed against the retaining ring to be assembled, and a space for accommodating the inner ring of the bearing is formed between the upper stopper and the annular top pressing block.

4. The cylindrical roller bearing riveting device according to claim 1, Features: The first buffer device and the second buffer device are axially arranged springs, and the springs are installed in axially arranged buffer grooves.

5. The cylindrical roller bearing riveting device according to claim 1, Features: A handle is arranged on the pressure seat.

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