Interference press-fitting equipment
By setting fixed clamps and moving clamps on the bottom plate of the interference pressure assembly equipment, and using a combined design of a telescopic mechanism and a vertical pressure mechanism, the problem of excessive distance between the pressure pressing mechanism and the assembly position of the part in the existing equipment is solved, and the stable pressing of the shaft parts and the compact design of the equipment is achieved.
Patent Information
- Application Number
- CN202421626035.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-10
AI Technical Summary
When the shaft parts are long, the distance between the pressure pressing mechanism and the assembly position of the hole parts and the shaft parts is relatively large, which can easily lead to the shaft parts breakage, and the equipment is large in size and is not easy to transport.
An interference pressure mounting device is designed to clamp the fixed shaft parts by setting a fixed clamp and a moving clamp on the bottom plate and using a telescopic mechanism to drive the moving clamp to move. Then, the hole parts are pressed into the spliced sink through a vertical pressure mechanism to reduce the distance between the pressure applying mechanism and the hole parts and the shaft parts.
Effectively reduce the distance between the vertical indenter and the hole part and the shaft part, avoid breaking the shaft part, and after removing the support legs, the equipment is small in size and easy to transport.
Smart Images
Figure CN222957936U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of interference installation, and particularly relates to an interference press-fitting device. Background Technique
[0002] Interference fit makes use of the elasticity of materials to expand and deform the hole and then sleeve it on the shaft. When the hole resumes its original shape, a tightening force on the shaft is generated to connect the two parts. Interference fit has the characteristics of simple structure, good centering property, large load-bearing capacity, good impact resistance, etc.
[0003] Press-fitting is one of the methods of interference assembly, which is suitable for occasions with a small interference amount. By applying an external force, the shaft is pressed into the hole. The tooling equipment for interference press-fitting usually involves a device that can fix and align the shaft part and the hole part, and a mechanism that can apply sufficient pressure to press the shaft part into the hole part. In order to fix and align the shaft part and the hole part, the shaft part and the hole part are usually positioned and fixed separately. The positioning and fixing of the shaft part are usually achieved through V-blocks, positioning pins or other fixtures to ensure the stability of the shaft. The positioning and fixing of the hole part are usually achieved through fixtures, positioning sleeves or other devices. The pressure-applying mechanism is the core part of the tooling, which is responsible for generating sufficient pressure to press the shaft into the hole. This mechanism may be a hydraulic cylinder, a pneumatic cylinder, an electric push rod or other devices that can provide stable and controllable pressure.
[0004] Currently, in the current interference press-fitting, the shaft part is usually pressed into the hole of the hole part. However, when the shaft part is relatively long and only the hole part needs to be interference-fitted to the end of the shaft part, when the shaft part is pressed into the hole part, the distance between the pressure-applying mechanism and the assembly positions of the hole part and the shaft part is large, and the distance between the pressure-applying mechanism and the hole part is large, which is likely to break the shaft part and will also result in a relatively large overall equipment volume and difficult transportation. Summary of the Utility Model
[0005] In order to solve the technical problems that in the case where the shaft part is relatively long and only the hole part needs to be interference-fitted to the end of the shaft part, when the existing interference press-fitting device presses the shaft part into the hole part, the distance between the pressure-applying mechanism and the hole part is large, which is likely to break the shaft part, and will also result in a relatively large overall equipment volume and difficult transportation, the utility model provides an interference press-fitting device.
[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0007] An interference press-fitting device includes a bottom plate. Support legs are provided at the bottom of the bottom plate. A fixed clamp block and a movable clamp block are provided on the upper surface of the bottom plate. The fixed clamp block is fixedly installed on the upper surface of the bottom plate. One side of the movable clamp block away from the fixed clamp block is connected to a telescopic mechanism. The telescopic mechanism can drive the movable clamp block to move along the upper surface of the bottom plate towards the side where the movable clamp block approaches the fixed clamp block and move away from it. A first sunk groove is formed at the edge of the upper surface of the fixed clamp block close to the movable clamp block, and a second sunk groove is formed at the edge of the upper surface of the movable clamp block close to the fixed clamp block. The first sunk groove and the second sunk groove can be butted to form a connected whole. A through hole is formed in the bottom plate, and the through hole is opposite to the first sunk groove and penetrates the upper surface and the lower surface of the bottom plate. A vertical plate is installed on the upper surface of the bottom plate, and a vertical pressure mechanism is installed on the surface of the vertical plate. The vertical pressure mechanism includes a vertical pressure head, and the vertical pressure head can move in a direction perpendicular to the bottom plate. The first sunk groove is located on the moving path of the vertical pressure head.
[0008] With the above structural scheme, the shaft part enters between the fixed clamp block and the movable clamp block through the through hole, makes the shaft part abut against the side of the fixed clamp block close to the movable clamp block, keeps the upper surface of the shaft part flush with the upper surface of the fixed clamp block, makes the telescopic mechanism drive the movable clamp block to move towards the direction close to the fixed clamp block, and then makes the fixed clamp block and the movable clamp block clamp and fix the shaft part. Then align the hole of the hole part with the shaft part, that is, align the hole part with the spliced first sunk groove and second sunk groove, place the hole part on the upper end surface of the shaft part, drive the vertical pressure mechanism, make the vertical pressure head descend, and press against the upper surface of the hole part. The vertical pressure head continues to press down, and sufficient pressure can be generated to press the hole part into the spliced first sunk groove and second sunk groove. The first sunk groove and the second sunk groove can play a role in limiting the hole part until the bottom end surface of the vertical pressure head abuts against the upper surface of the shaft part. Thus, the hole part is sleeved on the shaft part, and the interference press-fitting of the hole part and the shaft part is completed. In this application, the shaft part enters between the fixed clamp block and the movable clamp block from below the bottom plate, and presses on the hole part from above the bottom plate, which can make the hole part be sleeved on the shaft part, reduce the distance between the vertical pressure head and the assembly positions of the hole part and the shaft part, reduce the distance between the vertical pressure head and the hole part, the shaft part is not easily broken, and after removing the support legs, the volume of the interference press-fitting device is small, and it can be transported after removing the support legs.
[0009] As a preferred implementation mode of an interference press-fitting device, the fixed clamp block and the movable clamp block have the same shape and size, the fixed clamp block and the movable clamp block are symmetrically arranged, the first sunk groove and the second sunk groove have the same shape and size, and the first sunk groove and the second sunk groove are symmetrically arranged.
[0010] With the above structural scheme, the clamping force is relatively uniform.
[0011] As a preferred implementation of an interference press-fitting device, a first clamping hole is formed at the edge of the first sink groove facing the movable clamping block. The first clamping hole penetrates through the fixed clamping block and communicates with the through hole. A second clamping hole is formed at the edge of the second sink groove facing the fixed clamping block. The second clamping hole penetrates through the movable clamping block. The first clamping hole and the second clamping hole can be butted to form a connected whole.
[0012] With the above structural solution, the first clamping hole and the second clamping hole can surround the periphery of the shaft part, increasing the clamping area and improving the clamping stability.
[0013] As a preferred implementation of an interference press-fitting device, the fixed clamping block and the movable clamping block are located in the middle of the bottom plate. A flared opening is formed on one side of the bottom plate in the direction perpendicular to the moving path of the movable clamping block. The flared opening penetrates through the upper surface and the lower surface of the bottom plate and communicates with the through hole. The opening size of the flared opening gradually decreases in the direction towards the through hole.
[0014] With the above structural solution, the shaft part can be pushed into the through hole from one side of the through hole through the flared opening, which is convenient and fast.
[0015] As a preferred implementation of an interference press-fitting device, a baffle is provided on the side wall of one side of the bottom plate in the direction along the moving path of the movable clamping block. The baffle is located on the upper surface of the bottom plate and is perpendicular to the bottom plate.
[0016] With the above structural solution, multiple hole parts can be placed on the bottom plate, and the baffle can prevent the hole parts from falling off.
[0017] As a preferred implementation of an interference press-fitting device, the telescopic mechanism is a telescopic hydraulic cylinder.
[0018] As a preferred implementation of an interference press-fitting device, a first pedal valve is installed on the oil inlet pipe of the telescopic hydraulic cylinder, and a second pedal valve is installed on the oil outlet pipe of the telescopic hydraulic cylinder.
[0019] With the above structural solution, the telescopic movement of the telescopic hydraulic cylinder can be controlled by stepping on the foot, which is convenient for telescoping and does not occupy the hands.
[0020] As a preferred implementation of an interference press-fitting device, the vertical pressure mechanism is a hydraulic cylinder.
[0021] As a preferred implementation of an interference press-fitting device, a third pedal valve is installed on the oil inlet pipe of the hydraulic cylinder, and a fourth pedal valve is installed on the oil outlet pipe of the hydraulic cylinder.
[0022] With the above structural solution, the lifting of the punching head on the hydraulic cylinder can be controlled by stepping on the foot, which is convenient for telescoping and does not occupy the hands.
[0023] As a preferred implementation of an interference press-fitting device, the bottom plate is horizontally arranged.
[0024] The beneficial effects of the present utility model include:
[0025] In this application, the shaft part enters between the fixed clamping block and the movable clamping block from below the bottom plate, and presses on the hole part from above the bottom plate, enabling the hole part to be sleeved onto the shaft part, reducing the distance between the vertical press head and the assembly positions of the hole part and the shaft part, reducing the distance between the vertical press head and the hole part. The shaft part is not easily broken. After removing the support legs, the interference press-fitting device has a smaller volume and can be transported after removing the support legs. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0027] Figure 1 FIG. 13 is a schematic side view of an interference press-fitting device according to a specific embodiment of the present utility model;
[0028] Figure 2 FIG. 17 is a three-dimensional structural view of the bottom plate in an interference press-fitting device according to a specific embodiment of the present utility model;
[0029] Figure 3 FIG. 21 is a three-dimensional structural view of the bottom plate and the shaft part in an interference press-fitting device according to a specific embodiment of the present utility model;
[0030] Figure 4 FIG. 25 is a three-dimensional structural view of the shaft part and the hole part before assembly according to a specific embodiment of the present utility model;
[0031] Figure 5 FIG. 29 is a three-dimensional structural view of the shaft part and the hole part after assembly according to a specific embodiment of the present utility model.
[0032] List of components and reference numerals:
[0033] 1. Bottom plate; 11. Through hole; 12. Flared opening; 2. Support leg; 3. Fixed clamping block; 31. First sinking groove; 32. First clamping hole; 4. Movable clamping block; 41. Second sinking groove; 42. Second clamping hole; 5. Telescopic mechanism; 6. Vertical plate; 7. Vertical press head; 8. Baffle; 9. Shaft part; 10. Hole part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0035] Referring to Figures 1-5 , this embodiment provides an interference press-fitting device, which includes a bottom plate 1. The bottom plate 1 is horizontally arranged, and support legs 2 are provided at the bottom of the bottom plate 1. A fixed clamp block 3 and a movable clamp block 4 are provided on the upper surface of the bottom plate 1. The fixed clamp block 3 and the movable clamp block 4 are located in the middle of the bottom plate 1. The fixed clamp block 3 and the movable clamp block 4 have the same shape and size, and are symmetrically arranged left and right. The fixed clamp block 3 is fixedly installed on the upper surface of the bottom plate 1. The upper surfaces of the fixed clamp block 3 and the movable clamp block 4 are flush. One side of the movable clamp block 4 away from the fixed clamp block 3 is connected to a telescopic mechanism 5. The telescopic mechanism 5 can drive the movable clamp block 4 to move along the upper surface of the bottom plate 1 towards the side where the movable clamp block 4 approaches the fixed clamp block 3 and move away. The telescopic mechanism 5 is a telescopic hydraulic cylinder. A first pedal valve is installed on the oil inlet pipe of the telescopic hydraulic cylinder, and a second pedal valve is installed on the oil outlet pipe of the telescopic hydraulic cylinder. A first sinking groove 31 is opened at the edge of the upper surface of the fixed clamp block 3 close to the movable clamp block 4, and a second sinking groove 41 is opened at the edge of the upper surface of the movable clamp block 4 close to the fixed clamp block 3. The first sinking groove 31 and the second sinking groove 41 can be butted to form a connected whole. The first sinking groove 31 and the second sinking groove 41 have the same shape and size, and are symmetrically arranged left and right. The left and right directions in this embodiment are the displacement directions of the fixed clamp block 3; a through hole 11 is opened on the bottom plate 1. The through hole 11 is opposite to the first sinking groove 31 and penetrates the upper surface and the lower surface of the bottom plate 1. A first clamping hole 32 is opened at the edge of the first sinking groove 31 facing the movable clamp block 4. The first clamping hole 32 penetrates the fixed clamp block 3 and communicates with the through hole 11; a second clamping hole 42 is opened at the edge of the second sinking groove 41 facing the fixed clamp block 3. The second clamping hole 42 penetrates the movable clamp block 4; the first clamping hole 32 and the second clamping hole 42 can be butted to form a connected whole. A flared opening 12 is opened on one side of the bottom plate 1 in the direction perpendicular to the movement path of the movable clamp block 4. The flared opening 12 penetrates the upper surface and the lower surface of the bottom plate 1 and communicates with the through hole 11. The opening size of the flared opening 12 gradually decreases in the direction towards the through hole 11.
[0036] The upper surface of the bottom plate 1 is provided with a vertical plate 6. On the surface of the vertical plate 6, a vertical pressure mechanism is installed. The vertical pressure mechanism includes a vertical pressure head 7, and the vertical pressure head 7 can move in a direction perpendicular to the bottom plate 1. The first sink 31 is located on the moving path of the vertical pressure head 7. The vertical pressure mechanism is a hydraulic cylinder, the vertical pressure head 7 is the piston rod of the hydraulic cylinder, a third pedal valve is installed on the oil inlet pipe of the hydraulic cylinder, and a fourth pedal valve is installed on the oil outlet pipe of the hydraulic cylinder. On one side wall of the bottom plate 1 in the direction of the moving path of the moving clamp block 4, a baffle 8 is provided. The baffle 8 is located on the upper surface of the bottom plate 1 and is perpendicular to the bottom plate 1.
[0037] The working principle of this embodiment is as follows:
[0038] The left half of the shaft part 9 is abutted against the first clamping hole 32 through the through hole 11, keeping the upper surface of the shaft part 9 flush with the upper surface of the fixed clamp block 3. The telescopic mechanism 5 is driven to move the moving clamp block 4 in a direction approaching the fixed clamp block 3, wrapping the right half of the shaft part 9 in the second clamping hole 42. The fixed clamp block 3 and the moving clamp block 4 clamp and fix the shaft part 9. The first clamping hole 32 and the second clamping hole 42 surround the periphery of the shaft part 9, and the clamping contact area is large. The first sink 31 and the second sink 41 are spliced and communicated. Then, the hole of the hole part 10 is aligned with the shaft part 9, that is, the hole part 10 is aligned with the spliced first sink 31 and second sink 41. The hole part 10 is placed on the upper end surface of the shaft part 9, and the vertical pressure mechanism is driven to lower the vertical pressure head 7 to abut against the upper surface of the hole part 10. The vertical pressure head 7 continues to press down, and sufficient pressure can be generated to press the hole part 10 into the spliced first sink 31 and second sink 41. The first sink 31 and the second sink 41 can play a limiting role on the hole part 10 until the bottom end surface of the vertical pressure head 7 abuts against the upper surface of the shaft part 9. Thus, the hole part 10 is sleeved on the shaft part 9, and the interference press-fitting of the hole part 10 and the shaft part 9 is completed.
[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An interference fit press-fit device, comprising a base plate (1), characterized in that: A supporting leg (2) is provided at the bottom of the bottom plate (1), and a fixed clamping block (3) and a movable clamping block (4) are provided on the upper surface of the bottom plate (1). The fixed clamping block (3) is fixedly mounted on the upper surface of the bottom plate (1), and a side of the movable clamping block (4) away from the fixed clamping block (3) is connected to a telescopic mechanism (5), and the telescopic mechanism (5) can drive the movable clamping block (4) to move along the upper surface of the bottom plate (1) toward and away from a side of the movable clamping block (4) close to the fixed clamping block (3); a first sinking groove (31) is provided on an edge of the upper surface of the fixed clamping block (3) close to the movable clamping block (4), and a first sinking groove (31) is provided on an edge of the upper surface of the movable clamping block (4) close to the fixed clamping block (3). A second sink groove (41) is provided, and the first sink groove (31) and the second sink groove (41) can be connected to form a connected whole; the bottom plate (1) is provided with a through hole (11), the through hole (11) is opposite to the first sink groove (31), and the through hole (11) passes through the upper surface and the lower surface of the bottom plate (1); a vertical plate (6) is installed on the upper surface of the bottom plate (1), and a vertical pressure mechanism is installed on the plate surface of the vertical plate (6), and the vertical pressure mechanism includes a vertical pressure head (7), and the vertical pressure head (7) can move in a direction perpendicular to the bottom plate (1), and the first sink groove (31) is located on the moving path of the vertical pressure head (7).
2. The interference fit device according to claim 1, characterized in that: The fixed clamping block (3) and the movable clamping block (4) have the same shape and size, and the fixed clamping block (3) and the movable clamping block (4) are symmetrically arranged. The first sinking groove (31) and the second sinking groove (41) have the same shape and size, and the first sinking groove (31) and the second sinking groove (41) are symmetrically arranged.
3. The interference fit device according to claim 1, characterized in that: A first clamping hole (32) is formed on the edge of the first recessed groove (31) facing the movable clamping block (4), the first clamping hole (32) penetrates the fixed clamping block (3), and the first clamping hole (32) is communicated with the through hole (11); a second clamping hole (42) is formed on the edge of the second recessed groove (41) facing the fixed clamping block (3), the second clamping hole (42) penetrates the movable clamping block (4); the first clamping hole (32) and the second clamping hole (42) can be butted together to form a connected integral body.
4. The interference fit device according to claim 1, characterized in that: The fixed clamping block (3) and the movable clamping block (4) are located in the middle of the bottom plate (1). A bell mouth (12) is opened on a side surface of the bottom plate (1) in a direction perpendicular to the moving path of the movable clamping block (4). The bell mouth (12) passes through the upper surface and the lower surface of the bottom plate (1). The bell mouth (12) is connected to the through hole (11). The opening size of the bell mouth (12) gradually decreases in the direction toward the through hole (11).
5. The interference fit device according to claim 1, characterized in that: A baffle plate (8) is provided on a side wall of the bottom plate (1) on one side in the direction of the moving path of the movable clamping block (4); the baffle plate (8) is located on the upper surface of the bottom plate (1), and the baffle plate (8) is perpendicular to the bottom plate (1).
6. The interference fit device according to claim 1, characterized in that: The telescopic mechanism (5) is a telescopic hydraulic cylinder.
7. The interference fit device according to claim 6, characterized in that: A first pedal-type valve is installed on the oil inlet pipe of the telescopic hydraulic cylinder, and a second pedal-type valve is installed on the oil outlet pipe of the telescopic hydraulic cylinder.
8. The interference fit device according to claim 1, characterized in that: The vertical pressure mechanism is a hydraulic cylinder, and the vertical pressure head (7) is the piston rod of the hydraulic cylinder.
9. The interference fit device according to claim 8, characterized in that: A third pedal-type valve is installed on the oil inlet pipe of the hydraulic cylinder, and a fourth pedal-type valve is installed on the oil outlet pipe of the hydraulic cylinder.
10. The interference fit device according to claim 1, characterized in that: The bottom plate (1) is arranged horizontally.