Press fitting jig with pressure detection function

Abstract

A hydraulic device is provided with a working table, a force sensor is connected to the middle of the working table, a positioning seat is inserted into the middle of the force sensor and comprises a positioning column matched with one end of a shaft sleeve material, and a movable pressing block is arranged between a top pressing plate and the other end of the shaft sleeve material. According to the utility model, the labor intensity of workers is reduced, and the working efficiency is improved; by arranging the force sensor and the positioning seat, uniform pressure applying and accurate positioning on the mandrel are achieved, knocking damage to the mandrel in the manual press-fitting process is avoided, and the installation service life of the mandrel is prolonged; the structural design of the positioning seat and the movable pressing block is adopted, so that accurate positioning and press fitting of the special-shaped shaft sleeve are realized, and the assembly quality of a product is improved; by arranging the force sensor, the pressure in the press-fitting process is monitored in real time, it is guaranteed that loosening and falling cannot occur in the product interference assembling process, and the stability and reliability of the press-fitting process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical assembly jigs, in particular to a press-fitting jig with pressure detection. Background Art

[0002] In the process of manufacturing dental products, jigs are commonly used to press a mandrel into a bushing in the jig.

[0003] The fit between the mandrel and the bushing is an interference fit. In the past press-fitting methods, manual press-fitting was used. The assembly efficiency of manual press-fitting is low, and the working pressure of workers is also high. The knocking of the mandrel during manual press-fitting is likely to damage the mandrel, and it is impossible to evenly press the mandrel, affecting the installation service life of the mandrel. When using a hydraulic device for press-fitting, it is difficult to control the applied pressure of the hydraulic device. Excessive pressure application is likely to damage the mandrel, and when press-fitting a special-shaped bushing, it is impossible to accurately position and press the mandrel. Therefore, it is necessary to provide an assembly jig to help workers assemble the mandrel and the bushing, improve the assembly efficiency, and reduce the labor intensity of workers. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a press-fitting jig with pressure detection, aiming to solve the problems of low efficiency, high working pressure, easy damage to the mandrel, and affecting the service life of the product in the existing manual press-fitting; and the difficulties in pressure application control of the hydraulic device, excessive pressure application causing damage to the mandrel, and inability to position and apply pressure during the press-fitting of special-shaped bushings.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Provide a press-fitting jig with pressure detection, including a hydraulic device. The hydraulic device is provided with a workbench that can move up and down. A force sensor is connected to the middle of the workbench. A positioning seat is inserted into the middle of the force sensor. A top pressing plate is connected to one end surface of the hydraulic device opposite to the positioning seat. Between the top pressing plate and the positioning seat, there is a bushing material and a mandrel that matches the bushing material. The positioning seat includes a positioning column that matches one end of the bushing material. An active pressing block is arranged between the top pressing plate and the other end of the bushing material. The active pressing block includes a pressing head that actively penetrates the bushing material, and the mandrel is pressed into the bushing material through the pressing head. A limiting hole for accommodating the mandrel is also opened in the middle of the active pressing block.

[0007] Preferably, the hydraulic device includes a lower base and an upper top plate. Oriented columns are respectively connected to each corner between the lower base and the upper top plate. A workbench is arranged between the lower base and the upper top plate. The oriented columns all penetrate through the workbench. A hydraulic cylinder is connected between the lower base and the workbench, and the hydraulic cylinder is used to control the lifting height of the workbench.

[0008] Preferably, a limiting block extends on one side of the positioning seat along the positioning column. One side of the limiting block abuts against the bushing material. A supporting column is arranged at the opposite end of the positioning seat along the positioning column.

[0009] Preferably, the limiting block has a fan-shaped columnar structure.

[0010] Preferably, an arc-shaped edge extends at one end of the bushing material along the movable pressing block. The movable pressing block is provided with a limiting groove matching the arc-shaped edge.

[0011] Preferably, the movable pressing block has a stepped structure.

[0012] Preferably, the outer diameter of the pressing head is smaller than the inner diameter of the bushing material.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The press-fitting jig with pressure detection provided by the present utility model replaces the traditional manual press-fitting method by adopting an automatic press-fitting jig, reducing the labor intensity of workers and improving work efficiency; by setting a force sensor and a positioning seat, uniform pressing and precise positioning of the mandrel are achieved, avoiding knocking damage to the mandrel during the manual press-fitting process and improving the installation service life of the mandrel; by adopting the structural design of the positioning seat and the movable pressing block, precise positioning and press-fitting of the special-shaped bushing are achieved, improving the assembly quality of the product; by setting a force sensor, the pressure during the press-fitting process is monitored in real time to ensure the detection of the pressing-down pressure during the press-in process. When the downward pressure meets the requirement, the press-in action will continue to be completed. When the pressure is insufficient, the equipment will shut down, avoiding the problem of mandrel damage caused by excessive pressure of the hydraulic equipment and ensuring the stability and reliability of the press-fitting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings 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.

[0016] Figure 1 It is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a three-dimensional view of a press-fitting fixture;

[0018] Figure 3 is an exploded structural view of the press-fitting fixture.

[0019] In the figure: 1. Hydraulic device; 2. Workbench; 3. Force sensor; 4. Positioning seat; 5. Top pressing plate; 6. Bushing material; 7. Mandrel; 8. Movable pressing block; 9. Pressing head; 10. Limiting hole; 11. Lower base; 12. Upper top plate; 13. Orientation column; 14. Hydraulic cylinder; 15. Limiting block; 16. Support column; 17. Arc edge; 18. Limiting groove. Specific embodiments

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0023] The following combines with Figures 1 to 3 to describe the press-fitting fixture with pressure detection of the present invention.

[0024] Such as Figures 1 to 3As shown in the figure, the present utility model provides a press-fitting fixture with pressure detection, which includes a hydraulic device 1. The hydraulic device 1 is provided with a workbench 2 that can move up and down. A force sensor 3 is connected to the middle of the workbench 2. A positioning seat 4 is inserted into the middle of the force sensor 3. At one end face opposite to the positioning seat 4 of the hydraulic device 1, a top pressing plate 5 is connected. Between the top pressing plate 5 and the positioning seat 4, there is a bushing material 6 and a mandrel 7 that cooperates with the bushing material 6. The positioning seat 4 includes a positioning column that cooperates with one end of the bushing material 6. Between the top pressing plate 5 and the other end of the bushing material 6, there is a movable pressing block 8. The movable pressing block 8 includes a pressing head 9 that movably penetrates the bushing material 6, and the mandrel 7 is pressed into the bushing material 6 through the pressing head 9. A limiting hole 10 for accommodating the mandrel 7 is also provided in the middle of the movable pressing block 8.

[0025] Preferably, the hydraulic device 1 includes a lower base 11 and an upper top plate 12. Directional columns 13 are respectively connected to the corners between the lower base 11 and the upper top plate 12. A workbench 2 is arranged between the lower base 11 and the upper top plate 12. The directional columns 13 all penetrate the workbench 2. A hydraulic cylinder 14 is connected between the lower base 11 and the workbench 2. The hydraulic cylinder 14 is used to control the lifting height of the workbench 2. By setting the lower base 11 and the upper top plate 12 and connecting the directional columns 13 at the corners therebetween, the stability and rigidity of the entire press-fitting fixture are enhanced. The directional columns 13 penetrating the workbench 2 provide support for the workbench 2 and maintain its parallelism, thereby ensuring the coaxiality and press-fitting accuracy of the mandrel 7 and the bushing during the press-fitting process; the workbench 2 can move up and down under the guidance of the directional columns 13, and the workbench 2 is driven by the hydraulic cylinder 14, so that the up and down movement of the workbench 2 is precisely controlled by the hydraulic cylinder 14, thereby realizing a stable and accurate press-fitting action.

[0026] Preferably, a limiting block 15 is extended and arranged on one side of the positioning seat 4 where the positioning column is located. One side of the limiting block 15 abuts against the bushing material 6. A supporting column 16 is provided at one end of the positioning seat 4 opposite to the positioning column. The limiting block 15 has a fan-shaped columnar structure. By arranging the limiting block 15 on one side of the positioning seat 4, precise positioning of the bushing material 6 can be realized, and the limiting block 15 ensures the position correctness of the bushing during the press-fitting process. At the same time, the structural strength and stability of the positioning seat 4 are increased.

[0027] Preferably, an arc-shaped edge 17 is extended and arranged at one end of the bushing material 6 where the movable pressing block 8 is located. The movable pressing block 8 is provided with a limiting groove 18 that cooperates with the arc-shaped edge 17. The cooperation between the arc-shaped edge 17 and the limiting groove 18 plays a guiding role, which is convenient for the placement and positioning of the movable pressing block 8, simplifies the operation process, reduces the operation difficulty, and improves the assembly efficiency; the cooperation between the arc-shaped edge 17 and the limiting groove 18 can also prevent the bushing material 6 from rotating during the press-fitting process, ensuring the stability and reliability of the press-fitting.

[0028] Preferably, the movable pressing block 8 has a stepped structure.

[0029] Preferably, the outer diameter of the pressing head 9 is smaller than the inner diameter of the bushing material 6, facilitating the insertion of the pressing head 9 into the bushing material 6 during press-fitting.

[0030] The press-fitting fixture with pressure detection provided by the present utility model replaces the traditional manual press-fitting method with an automated press-fitting fixture, reducing the labor intensity of workers and improving work efficiency; by setting the force sensor 3 and the positioning seat 4, uniform pressure application and precise positioning of the mandrel 7 are achieved. During the pressing-in process, the downward pressure is detected. When the force reaches 500 kg, the pressing-in action will continue. When the pressure is insufficient, the machine shuts down, avoiding the knocking damage to the mandrel 7 during the manual press-fitting process and improving the installation service life of the mandrel 7; the structural design of the positioning seat 4 and the movable pressing block 8 achieves precise positioning and press-fitting of the special-shaped bushing, improving the assembly quality of the product; by setting the force sensor 3, the pressure during the press-fitting process is monitored in real time, avoiding the problem of damage to the mandrel 7 caused by excessive pressure applied by the hydraulic equipment and ensuring the stability and reliability of the press-fitting process.

[0031] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A press-fitting fixture with pressure detection, including a hydraulic device, characterized in that: The hydraulic device is provided with a workbench which can be lifted up and down, a force sensor is connected to the middle of the workbench, a positioning seat is inserted in the middle of the force sensor, a top pressure plate is connected to the end face of the hydraulic device opposite to the positioning seat, a shaft sleeve material and a core shaft matched with the shaft sleeve material are arranged between the top pressure plate and the positioning seat, the positioning seat includes a positioning column matched with one end of the shaft sleeve material, a movable pressure block is arranged between the top pressure plate and the other end of the shaft sleeve material, the movable pressure block includes a pressure head movably penetrated through the shaft sleeve material, and the core shaft is pressed into the shaft sleeve material by the pressure head, and a limiting hole for accommodating the core shaft is also opened in the middle of the movable pressure block.

2. The press-fitting fixture with pressure detection according to claim 1, characterized in that: The hydraulic device includes a lower base and an upper top plate, each end corner between the lower base and the upper top plate is connected with a directional column, a workbench is arranged between the lower base and the upper top plate, the directional columns all pass through the workbench, a hydraulic cylinder is connected between the lower base and the workbench, and the hydraulic cylinder is used to control the lifting height of the workbench.

3. The press-fitting fixture with pressure detection according to claim 1, characterized in that: The positioning seat is located on one side of the positioning column and is extended to be provided with a limiting block, one side of the limiting block is abutted against the shaft sleeve material, and the positioning seat is located at one end opposite to the positioning column and is provided with a supporting column.

4. The press-fitting jig with pressure detection according to claim 3, characterized in that: The limiting block is in a fan-shaped columnar structure.

5. The press-fitting fixture with pressure detection according to claim 1, characterized in that: The sleeve material is provided with an arc-shaped edge extending from one end of the movable pressing block, and the movable pressing block is provided with a limiting groove matched with the arc-shaped edge.

6. The press-fitting fixture with pressure detection according to claim 1, characterized in that: The movable pressing block has a stepped structure.

7. The press-fitting jig with pressure detection according to claim 1, characterized in that: The outer diameter of the pressure head is smaller than the inner diameter of the sleeve material.

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