Semi-automatic mandrel press fitting tool

Abstract

The utility model discloses a kind of semi-automatic mandrel press fitting tool, belong to mandrel processing device technical field, including workbench, electric hydraulic press is fixedly installed on the workbench, its oil cylinder subassembly fixedly penetrates the top of workbench, and sets up piston rod upward output, two portal frames are symmetrically fixedly connected in the top of workbench, fixed seat is fixedly connected in the top position between two portal frames, manually hydraulic press is fixedly installed on two portal frames;The utility model is combined with the mode for use of manual hydraulic pressure and automatic hydraulic pressure, not only can play the effect of time-saving and labor-saving, but also can effectively improve press fitting speed, and further improve work efficiency.In addition, by designing the positioning block compatible with three flat mouth, wing edge screw sleeve can be positioned, prevent rotating when guiding butt joint, so as to improve the accuracy of guiding, and also make the whole operation more simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of mandrel processing equipment, and in particular relates to a semi-automatic mandrel press-fitting fixture. Background Technology

[0002] During assembly, the mandrel should be attached as follows: Figure 1 As shown, the shaft end of the shaft 100 needs to be inserted into the hole on the platform, and the shaft shoulder needs to be aligned with the plane of the platform. Then, the three-pronged sleeve 200 with a disc spring is aligned with the three flat openings of the winged threaded sleeve 300 and guided downwards for compression. During press-fitting, the three-pronged sleeve 200 and the winged threaded sleeve 300 often deviate, preventing one-time press-fitting. Therefore, a manual hydraulic press is currently commonly used for press-fitting. If the assembly worker feels significant resistance at the beginning of press-fitting, the position needs to be readjusted. After entering the guide wing, manual compression continues until the desired position is reached. This traditional fully manual press-fitting method is very labor-intensive and labor-intensive in the latter half of the press-fitting process, resulting in low press-fitting efficiency. Therefore, we propose a semi-automatic mandrel press-fitting fixture to solve the above-mentioned problems. Utility Model Content

[0003] In view of this, in order to solve the problem that the traditional fully manual pressing method is very labor-intensive and labor-intensive in the second half of the pressing process, resulting in low pressing efficiency, this utility model provides a semi-automatic mandrel pressing fixture.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a semi-automatic mandrel pressing fixture, including a worktable;

[0005] It also includes an electric hydraulic press, which is fixedly installed on the workbench, with its cylinder assembly fixedly passing through the top of the workbench and a piston rod for upward output;

[0006] It also includes two gantry frames, which are symmetrically and fixedly connected to the top of the workbench;

[0007] It also includes a mounting base, which is fixedly connected to the top position between the two gantry frames;

[0008] It also includes a manual hydraulic press, which is fixedly installed on the two gantry frames. Its cylinder assembly is fixedly inserted through the top of the fixed base and is equipped with a piston rod that outputs downward. At the same time, the piston rods of the electric hydraulic press and the manual hydraulic press are used in a corresponding manner.

[0009] It also includes a sliding support seat, located at the top of the piston rod on the electric hydraulic press, for positioning the central shaft and the wing-side threaded sleeve of the mandrel assembly;

[0010] The initial guiding section of the three-pronged sleeve and the wing-side threaded sleeve is completed using the manual hydraulic press, while the subsequent pressing section of the three-pronged sleeve and the wing-side threaded sleeve is completed using the electric hydraulic press.

[0011] Furthermore, the top end of the piston rod of the electric hydraulic press is provided with a positioning hole, and the top end of the piston rod of the electric hydraulic press is integrally formed with a guide sleeve that is concentrically connected to the positioning hole.

[0012] Furthermore, the top side of the sliding support is provided with an insertion hole that is adapted to be inserted into the guide sleeve, and the top end of the guide sleeve is flush with the top end of the sliding support.

[0013] Furthermore, the two gantry frames are fixedly connected to the same T-shaped plate, one side of the T-shaped plate extends outward and is fixedly connected to a guide rod, the bottom end of the guide rod is fixedly connected to the top of the workbench, and the sliding support is slidably sleeved on the outer wall of the guide rod.

[0014] Furthermore, the top of the sliding support is provided with a plurality of positioning blocks in a ring shape at equal intervals, which are used to cooperate with the corresponding three flat openings.

[0015] Furthermore, the top of the sliding support is provided with multiple mounting slots equidistantly arranged in a ring around the insertion hole. Each of the multiple mounting slots is slidably connected to a sliding block. The top of the sliding block extends upward, and the positioning block is fixedly connected to the top of the sliding block.

[0016] Furthermore, two sliding rods are symmetrically fixedly connected to the bottom inner walls of each of the multiple mounting slots. The top ends of the two sliding rods penetrate the top of the corresponding sliding block and are flush with the top of the sliding block. Each of the multiple sliding rods is fitted with a return spring, and the two ends of the return spring are fixedly connected to the bottom of the sliding block and the bottom inner wall of the mounting slot, respectively.

[0017] Furthermore, the top of the positioning block has a through hole that interlocks with one of the slide rods.

[0018] Furthermore, each of the multiple mounting slots is fixedly connected to a limiting plate, and the top of the limiting plate has two through holes symmetrically provided for the sliding rod and the return spring to pass through and make way.

[0019] The embodiments of this utility model have the following beneficial effects:

[0020] This invention employs a combination of manual and automatic hydraulic systems. The initial guiding section can be easily completed manually using hydraulics, while the latter half utilizes automatic hydraulics for rapid pressing. This not only saves time and labor but also significantly increases pressing speed, thereby improving work efficiency. Furthermore, the design of a positioning block compatible with the three-sided threaded sleeve effectively positions the wing-end threaded sleeve, preventing rotation during guiding and docking, thus improving guiding accuracy and making the entire operation simpler and more convenient.

[0021] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the existing mandrel assembly;

[0024] Figure 2 This is a schematic diagram of the overall structure of a semi-automatic mandrel pressing tool according to the present invention;

[0025] Figure 3 This is a partial sectional view of the piston rod structure of the oil cylinder in an electric hydraulic press.

[0026] Figure 4 This is a schematic diagram of the connection structure of the sliding support.

[0027] Figure 5 This is a sectional view of the sliding support structure;

[0028] Figure 6 This is an exploded schematic diagram of the connection structure between the sliding block and the positioning block.

[0029] In the diagram: 1. Workbench; 2. Electric hydraulic press; 21. Positioning hole; 3. Gantry frame; 4. T-shaped plate; 5. Fixed base; 6. Manual hydraulic press; 7. Guide rod; 8. Sliding support seat; 81. Insertion hole; 82. Mounting groove; 9. Guide sleeve; 10. Sliding block; 11. Positioning block; 111. Through hole; 12. Slide rod; 13. Return spring; 14. Limiting plate; 141. Through hole. Detailed Implementation

[0030] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] Example 1: Please refer to Figures 2-6 As shown, this embodiment provides a semi-automatic mandrel press-fitting fixture, including a worktable 1, an electric hydraulic press 2, two gantry frames 3, a fixed base 5, a manual hydraulic press 6, and a sliding support 8. The electric hydraulic press 2 is fixedly mounted on the worktable 1, with its cylinder assembly fixedly penetrating the top of the worktable 1 and equipped with an upward-output piston rod. A positioning hole 21 is provided at the top of the piston rod on the electric hydraulic press 2, and a guide sleeve 9 concentrically connected to the positioning hole 21 is integrally formed at the top of the piston rod. When positioning the mandrel 100, the shaft end of the mandrel 100 is inserted downward into the guide sleeve 9 for positioning, while simultaneously extending downward into the positioning hole 21, thereby achieving the insertion and positioning of the mandrel 100. The two gantry frames 3 are symmetrically fixedly connected to the top of the worktable 1. The fixed base 5 is fixedly connected at the top position between the two gantry frames 3. The manual hydraulic press 6 is fixedly mounted on two gantry frames 3. Its cylinder assembly is fixedly inserted through the top of the fixed base 5, and a piston rod is set to output downwards. Simultaneously, the piston rods of the electric hydraulic press 2 and the manual hydraulic press 6 are used in a corresponding vertical engagement. A sliding support 8 is located at the top of the piston rod on the electric hydraulic press 2, used for positioning the spindle assembly's central shaft 100 and the wing-shaped threaded sleeve 300. The top side of the sliding support 8 has an insertion hole 81 adapted to the guide sleeve 9, and the top of the guide sleeve 9 is flush with the top of the sliding support 8. The sliding support 8 is positioned and fitted onto the guide sleeve 9, contacting the top of the piston rod on the electric hydraulic press 2, while its top is flush with the top of the guide sleeve 9. Therefore, after the shaft 100 is positioned, its shoulder portion fits against the top plane of the sliding support 8, thereby achieving the support and positioning of the wing-shaped threaded sleeve 300. The initial guiding section of the three-pronged sleeve 200 and the wing-side threaded sleeve 300 is completed by a manual hydraulic press 6, and the subsequent pressing section of the three-pronged sleeve 200 and the wing-side threaded sleeve 300 is completed by an electric hydraulic press 2.

[0032] In one aspect of this embodiment, a T-shaped plate 4 is fixedly connected between two gantry frames 3. One side of the T-shaped plate 4 extends outward and is fixedly connected to a guide rod 7. The bottom end of the guide rod 7 is fixedly connected to the top of the workbench 1, and a sliding support 8 is slidably sleeved on the outer wall of the guide rod 7. By sliding the sliding support 8 on the guide rod 7, it can cooperate with the guide sleeve 9 to achieve up-and-down positioning and sliding of the sliding support 8 on the guide rod 7. When pressing the mandrel assembly, the shaft 100 is first positioned by inserting it into the guide sleeve 9 and the positioning hole 21, and the shaft shoulder is made to fit against the top of the sliding support 8 for support, while simultaneously completing the support and positioning of the winged threaded sleeve 300. Then, the three-pronged sleeve 200 with a disc spring is aligned with the three flat openings of the winged threaded sleeve 300 for guiding compression. During the compression process, the piston rod of the manual hydraulic press 6 is first output downward by operating it to perform preliminary guiding, positioning, and compression of the three-pronged sleeve 200. Once the compression reaches a certain level, stop operating the manual hydraulic press 6. At this point, the top of the three-pronged sleeve 200 remains pressed against the piston rod of the manual hydraulic press 6. Next, start the electric hydraulic press 2. Its piston rod extends upward, simultaneously causing the sliding support 8 to slide upward on the guide rod 7. The sliding support 8 then synchronously moves the shaft 100 and the wing-end threaded sleeve 300 upward, completing the subsequent pressing work. After pressing the mandrel, reset the electric hydraulic press 2 and the manual hydraulic press 6, and remove the mandrel.

[0033] This invention can be used in the field of mandrel press-fitting tooling, and can also be applied to other fields.

[0034] Example 2: This example is a further improvement on the previous example: as follows Figures 2-6As shown, the top of the sliding support base 8 is provided with multiple positioning blocks 11 arranged in a ring at equal intervals, which are used to cooperate with the corresponding three-pronged openings. When the wing-shaped threaded sleeve 300 is inserted and positioned on the sliding support base 8 through the shaft 100, the multiple three-pronged openings on the wing-shaped threaded sleeve 300 can be adjusted by rotating it so that they are respectively positioned and inserted into the multiple positioning blocks 11. This can achieve the effect of limiting the rotation of the wing-shaped threaded sleeve 300, preventing it from rotating after positioning, thereby improving the subsequent accurate positioning between it and the three-pronged sleeve 200. It also facilitates the guiding and positioning operation, making the operation more convenient. The top of the sliding support base 8 is provided with multiple mounting grooves 82 arranged in a ring at equal intervals with the insertion hole 81 as the center. Each mounting groove 82 is slidably connected to a sliding block 10. The top of the sliding block 10 extends upward, and the positioning block 11 is fixedly connected to the top of the sliding block 10. The top of the sliding support base 8 is also provided with multiple clearance holes arranged in a ring at equal intervals, which are used to cooperate with the corresponding positioning blocks 11, and the clearance holes are connected to the mounting grooves 82. Each of the multiple mounting slots 82 has two slide rods 12 symmetrically fixedly connected to its bottom inner wall. The top ends of the two slide rods 12 penetrate the top of the corresponding sliding block 10 and are flush with the top of the sliding block 10. Each of the slide rods 12 is fitted with a return spring 13, and the two ends of the return spring 13 are fixedly connected to the bottom of the sliding block 10 and the bottom inner wall of the mounting slot 82, respectively. When the mandrel is not press-fitted, the sliding block 10 is supported by the elastic force of the return spring 13, and its top extends upward a short distance, so that the positioning block 11 is located above the top of the sliding support seat 8. After the shaft 100 and the winged threaded sleeve 300 are positioned, the shaft shoulder fits against the top of the sliding support seat 8 for support, while the bottom of the winged threaded sleeve 300 fits precisely against the top of the three sliding blocks 10. After the manual hydraulic press 6 completes the initial guiding and positioning of the three-pronged sleeve 200, the electric hydraulic press 2 is started to drive the sliding support 8, mandrel 100, and wing-end threaded sleeve 300 to move upwards synchronously, completing the subsequent pressing work. At this time, after the three-pronged sleeve 200 abuts against the positioning block 11, during the pressing process, the three-pronged sleeve 200 will move downwards against the positioning block 11, and drive the sliding block 10 to slide downwards into the mounting groove 82, while simultaneously compressing the return spring 13. The lower part of the positioning block 11 will also move downwards into the mounting groove 82. When the positioning block 11 is completely removed from the three flat openings on the wing-end threaded sleeve 300, the pressing of the entire mandrel is completed.

[0035] In one aspect of this embodiment, the top of the positioning block 11 has a through hole 111 that engages with one of the sliding rods 12. During the downward movement of the positioning block 11, the top end of one of the sliding rods 12 passes through the through hole 111, thus providing clearance and ensuring the normal downward movement of the positioning block 11. When the top end of the sliding rod 12 is flush with the top plane of the positioning block 11 (i.e., not protruding), the positioning block 11 will not continue to move downward because the sliding rod 12 is in a fixed state. At this time, the sliding rod 12's contact with and limiting the bottom of the three-pronged sleeve 200 effectively positions and installs the three-pronged sleeve 200, preventing over-pressing.

[0036] In one aspect of this embodiment, a limiting plate 14 is fixedly connected inside each of the plurality of mounting slots 82. Two through holes 141 are symmetrically formed on the top of the limiting plate 14 for the sliding rod 12 and the return spring 13 to pass through. By setting the limiting plate 14, the downward movement of the sliding block 10 can be limited. That is, when the three-pronged sleeve 200 is precisely positioned and pressed into place with the wing-shaped threaded sleeve 300, the downward movement of the sliding block 10 will precisely abut against the limiting plate 14, thereby ensuring the accuracy of the entire mandrel positioning and pressing.

[0037] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric hydraulic press 2 and the manual hydraulic press 6 are commonplace and are conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A semi-automatic mandrel press-fitting fixture, characterized in that, include: Workbench (1); An electric hydraulic press (2) is fixedly installed on the workbench (1), with its cylinder assembly fixedly passing through the top of the workbench (1) and a piston rod set to output upwards; Two gantry frames (3) are symmetrically and fixedly connected to the top of the workbench (1); The fixing seat (5) is fixedly connected to the top position between the two gantry frames (3); The manual hydraulic press (6) is fixedly installed on the two gantry frames (3). Its cylinder assembly is fixedly inserted through the top of the fixed seat (5) and a piston rod is set to output downward. At the same time, the piston rod of the electric hydraulic press (2) and the piston rod of the manual hydraulic press (6) are used in a corresponding manner. A sliding support (8) is provided at the top of the piston rod on the electric hydraulic press (2) for positioning the spindle assembly shaft (100) and the wing-side threaded sleeve (300); The initial guiding section of the three-pronged sleeve (200) and the wing-side threaded sleeve (300) is completed by the manual hydraulic press (6), and the subsequent pressing section of the three-pronged sleeve (200) and the wing-side threaded sleeve (300) is completed by the electric hydraulic press (2).

2. The semi-automatic mandrel press-fitting fixture as described in claim 1, characterized in that, The top of the piston rod of the electric hydraulic press (2) is provided with a positioning hole (21), and the top of the piston rod of the electric hydraulic press (2) is integrally formed with a guide sleeve (9) that is concentrically connected to the positioning hole (21).

3. The semi-automatic mandrel press-fitting fixture as described in claim 2, characterized in that, The top side of the sliding support (8) is provided with an insertion hole (81) that is adapted to be inserted into the guide sleeve (9), and the top of the guide sleeve (9) is flush with the top of the sliding support (8).

4. The semi-automatic mandrel press-fitting fixture as described in claim 3, characterized in that, The two gantry frames (3) are fixedly connected to the same T-shaped plate (4). One side of the T-shaped plate (4) extends outward and is fixedly connected to a guide rod (7). The bottom end of the guide rod (7) is fixedly connected to the top of the workbench (1), and the sliding support seat (8) is slidably sleeved on the outer wall of the guide rod (7).

5. The semi-automatic mandrel press-fitting fixture as described in claim 4, characterized in that, The top of the sliding support (8) is provided with a plurality of positioning blocks (11) that are used in conjunction with the corresponding three flat openings.

6. The semi-automatic mandrel press-fitting fixture as described in claim 5, characterized in that, The top of the sliding support (8) is provided with multiple mounting slots (82) arranged in a ring at equal intervals with the insertion hole (81) as the center. Each of the multiple mounting slots (82) is slidably connected to a sliding block (10). The top of the sliding block (10) extends upward, and the positioning block (11) is fixedly connected to the top of the sliding block (10).

7. The semi-automatic mandrel press-fitting fixture as described in claim 6, characterized in that, Two slide rods (12) are symmetrically fixedly connected to the bottom inner walls of the multiple mounting slots (82). The top ends of the two slide rods (12) penetrate the top of the corresponding sliding block (10) and are flush with the top of the sliding block (10). A return spring (13) is sleeved on each of the multiple slide rods (12), and the two ends of the return spring (13) are fixedly connected to the bottom of the sliding block (10) and the bottom inner wall of the mounting slot (82) respectively.

8. The semi-automatic mandrel press-fitting fixture as described in claim 7, characterized in that, The top of the positioning block (11) is provided with a through hole (111) that engages with one of the slide rods (12).

9. The semi-automatic mandrel press-fitting fixture as described in claim 8, characterized in that, Each of the mounting slots (82) is fixedly connected to a limiting plate (14). The top of the limiting plate (14) has two through holes (141) symmetrically provided for the sliding rod (12) and the return spring (13) to pass through and make way.

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