Hole expanding and shrinking equipment suitable for multiple calibers

Abstract

The utility model discloses hole expanding and shrinking equipment suitable for multiple calibers, and relates to the field of hole expanding and shrinking equipment, the hole expanding and shrinking equipment comprises a machine table and an anti-shaking mechanism, sliding rails are arranged on the two sides of the top of the machine table, a lead screw is transversely arranged in the middle of the inner side of the machine table, sliding seats are arranged on the two sides of the sliding rails, and the anti-shaking mechanism is arranged on the machine table. A sliding seat is arranged on the machine table, a control part is arranged at one end of the inner side of the sliding seat, a hole expanding and shrinking part is arranged at one end of the sliding seat on one side of the machine table, and a punching shaft seat is arranged at one end of the sliding seat on the other side of the machine table. The punching shaft seat, the first oil cylinder body, the second oil cylinder body and other parts are controlled to act, the upper clamping die and the workpiece clamping seat can meet the clamping requirements of pipes with different diameters, hole expansion and shrinkage can be conducted on the pipes with various calibers without replacing a large number of tool clamps, the universality of equipment is improved, the production cost is reduced, and the market adaptability of the equipment is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of orifice expansion and contraction equipment, specifically to an orifice expansion and contraction equipment suitable for multiple diameters. Background Technology

[0002] Hole expanders and reducers are mechanical devices used to enlarge or reduce the diameter of workpiece holes, and are widely used in many fields such as machinery manufacturing and metal processing. Traditional hole expanders and reducers have some problems during use. On the one hand, the workpiece is prone to shaking during the expansion or reduction process, making it difficult to guarantee the accuracy of the hole, resulting in large diameter deviations and affecting product quality. On the other hand, traditional equipment has poor adaptability to workpieces of different diameters and shapes, often requiring the replacement of numerous tooling fixtures, making operation cumbersome, production efficiency low, and costs high.

[0003] Publication number CN220049881U discloses a device for expanding and contracting holes in ring forgings. This device uses an air pump to clamp and fix the ring forgings, improving the fixing effect. It can perform expanding and contracting hole operations on ring forgings of different sizes and securely fix them, thus enhancing applicability. Simultaneously, using positioning triangles, clamping plates, rubber strips, and compression springs, the spring's rebound force pushes the clamping plate to initially position the ring forging longitudinally. This allows for the positioning of ring forgings of different sizes and is easy to operate.

[0004] Although the equipment in the comparison document can fix the workpiece to a certain extent, it cannot be adapted to workpieces of different diameters, thus limiting its processing to a certain type of workpiece.

[0005] Therefore, in order to address the shortcomings of the existing technology, we conducted research and improvements and proposed a device for expanding and contracting orifices with multiple diameters. Utility Model Content

[0006] The purpose of this invention is to provide a device for expanding and contracting orifices of various diameters, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for expanding and contracting holes with multiple diameters, comprising: a machine base and an anti-sway mechanism; slide rails are provided on both sides of the top of the machine base; a lead screw is provided laterally in the middle of the inner side of the machine base; slide blocks are provided on both sides of the slide rails; a control unit is provided at one end of the inner side of the slide block; an expanding and contracting hole part is provided at one end of the slide block on one side of the machine base; a counter-punching shaft seat is provided at one end of the slide block on the other side of the machine base; and a sensor body is provided at the lower end of the outer side of one side of the slide block.

[0008] The slide is provided with a first hydraulic cylinder body on the side near the machine base. A base is provided in the middle of the machine base. A vertical groove is provided on the inner side of the base. A spring rod assembly is provided on the inner side of the vertical groove. A tooling seat is provided on the outside of the spring rod assembly. A workpiece holder is provided on the top of the tooling seat. A tooling frame is provided on the outside of the base. A top groove is opened on the top of the tooling frame. A second hydraulic cylinder body is vertically inserted through the inner side of the top groove.

[0009] The bottom of the second cylinder body is provided with an upper clamping mold;

[0010] The anti-sway mechanism is used to prevent the object from shaking when it is expanded or contracted through the hole.

[0011] Furthermore, the sensor body can send signals to the control unit, which is connected to both the first and second cylinder bodies, and the sensor body causes the first and second cylinder bodies to perform corresponding actions.

[0012] Furthermore, the second hydraulic cylinder body can drive the upper clamping mold to move horizontally up and down inside the tooling frame.

[0013] Furthermore, the second cylinder body can move up and down inside the top groove.

[0014] Furthermore, the first cylinder body can drive the slide block to move on top of the slide rail, and the bottom of the slide block is provided with a bearing that matches the external thread of the lead screw.

[0015] Furthermore, the tooling base has an opening on its exterior, the inner side of which is connected to the spring rod assembly, and the tooling base can move up and down outside the spring rod assembly.

[0016] Furthermore, the anti-sway mechanism includes a rack, a gear, a limiting plate, a vertical bar, and a crank arm assembly. A rack is provided at an axially symmetrical location on the outer side of the upper clamping mold, and a limiting plate is provided at an axially symmetrical location on the outer side of the workpiece clamping seat. A gear is provided at one end of the limiting plate, and a crank arm assembly is provided on the other side of the gear coaxially. A vertical bar is provided at the top of the crank arm assembly. The connection structure between the vertical bar and the crank arm assembly is a vertical structure, and the top structure of the vertical bar is a rectangular structure. The length of the rectangular structure at the top of the vertical bar is equal to the width of the workpiece clamping seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model adjusts the forward distance of the expansion and contraction hole by the sensor body, and controls the movement of components such as the punching shaft seat, the first cylinder body and the second cylinder body. This allows the upper clamping mold and the workpiece clamping seat to adapt to the clamping requirements of pipes of different diameters. Without the need to change a large number of tooling fixtures, it can expand and contract the holes of pipes of various diameters, improve the versatility of the equipment, reduce production costs, and enhance the market adaptability of the equipment.

[0019] 2. This utility model uses an anti-sway mechanism through the coordinated operation of components such as racks, gears, crank arms, and vertical bars. During the expansion and contraction of the hole, the vertical bars can effectively press down on both sides of the tube to prevent it from shaking or tilting. This avoids problems such as uneven expansion and contraction of the hole and deviation of the hole diameter caused by the shaking of the tube, ensuring the accuracy of the expansion and contraction of the hole, improving product quality, and reducing the scrap rate. Attached Figure Description

[0020] Figure 1 This is an overall appearance drawing of the expansion and contraction device applicable to multiple diameter orifices according to this utility model;

[0021] Figure 2 This is a partial enlarged view of the anti-sway mechanism of this utility model (gear and crank arm assembly);

[0022] Figure 3 This is a partial enlarged view of the anti-sway mechanism of this utility model (rack and upper clamping mold part);

[0023] Figure 4 This is a partial enlarged view of the spring rod assembly and tooling base of the hole expansion and contraction device of this utility model;

[0024] Figure 5 This is another perspective view of the expansion and contraction device for multi-diameter orifices according to this utility model;

[0025] Figure 6 This is a partial enlarged view of the machine tool for the orifice expansion and contraction device of this utility model;

[0026] Figure 7 This is a schematic diagram of the appearance of this utility model from another perspective;

[0027] Figure 8 This is a utility model Figure 7 Enlarged diagram of point D.

[0028] In the diagram: 1. First cylinder body; 2. Control unit; 3. Slide; 4. Expanding / contracting hole; 5. Tooling frame; 6. Second cylinder body; 7. Punch shaft seat; 8. Sensor body; 9. Lead screw; 10. Tooling seat; 11. Base; 12. Workpiece holder; 13. Top groove; 14. Machine base; 15. Slide rail; 16. Gear; 17. Limiting plate; 18. Vertical bar; 19. Crank arm assembly; 20. Vertical groove; 21. Spring rod assembly; 22. Upper clamping mold; 23. Rack. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1-8 As shown, a device for expanding and contracting holes with multiple diameters includes: a machine base 14 and an anti-sway mechanism. Slide rails 15 are provided on both sides of the top of the machine base 14. A lead screw 9 is horizontally arranged in the middle of the inner side of the machine base 14. Slide seats 3 are provided on both sides of the slide rails 15. A control unit 2 is provided at one end of the inner side of the slide seat 3. An expanding and contracting hole part 4 is provided at one end of the slide seat 3 on one side of the machine base 14. A counter-punch bearing seat 7 is provided at one end of the slide seat 3 on the other side of the machine base 14. A sensor body 8 is provided at the lower end of the outer side of the slide seat 3.

[0031] A first hydraulic cylinder body 1 is provided on the side of the slide 3 near the machine base 14. A base 11 is provided in the middle of the machine base 14. A vertical groove 20 is provided on the inner side of the base 11. A spring rod assembly 21 is provided on the inner side of the vertical groove 20. A tooling seat 10 is provided on the outer side of the spring rod assembly 21. A workpiece holder 12 is provided on the top of the tooling seat 10. A tooling frame 5 is provided on the outer side of the base 11. A top groove 13 is opened on the top of the tooling frame 5. A second hydraulic cylinder body 6 is vertically inserted through the inner side of the top groove 13.

[0032] The bottom of the second oil cylinder body 6 is provided with an upper clamping mold 22;

[0033] Anti-sway mechanism is used to prevent objects from shaking when they are expanded or contracted through the hole.

[0034] The anti-sway mechanism includes a rack 23, a gear 16, a limiting plate 17, a vertical bar 18, and a crank arm assembly 19. The rack 23 is provided at the outer axis symmetrical position of the upper clamping mold 22, and the limiting plate 17 is provided at the outer axis symmetrical position of the workpiece clamping seat 12. A gear 16 is provided at one end of the limiting plate 17, and a crank arm assembly 19 is provided on the other side of the gear 16 coaxially. A vertical bar 18 is provided at the top of the crank arm assembly 19. The connection structure between the vertical bar 18 and the crank arm assembly 19 is a vertical structure, and the top structure of the vertical bar 18 is a rectangular structure. The length of the rectangular structure at the top of the vertical bar 18 is equal to the width of the workpiece clamping seat 12.

[0035] In this embodiment, the anti-sway mechanism is optimized by changing the connection between the vertical bar 18 and the curved arm assembly 19 to an adjustable joint structure. When facing tubes of different shapes and materials, the angle of the vertical bar 18 can be finely adjusted according to the actual situation so that it can better fit the tube surface and enhance the anti-sway effect. At the same time, a rubber anti-slip pad is added to the surface of the upper mold 22 to increase the friction when in contact with the gear 16, making the rotation of the gear 16 more stable, thereby ensuring the accuracy and consistency of the vertical bar 18's movement.

[0036] For the multi-diameter adaptation function, an image recognition module is added to the sensor body 8. This module can not only sense the diameter of the pipe, but also identify the material, shape and other information of the pipe. Through intelligent algorithms, the action parameters of the first hydraulic cylinder body 1 and the second hydraulic cylinder body 6 are automatically adjusted according to the recognition results to achieve more accurate adaptation to pipes with different characteristics, and further improve the efficiency and quality of the expansion and contraction holes.

[0037] In addition, this embodiment improves the power transmission and control method of the equipment, upgrades the servo motor of the lead screw 9 to a higher precision servo motor, and equips it with a closed-loop control system. This system can monitor the rotation angle and displacement of the lead screw 9 in real time, and accurately adjust the motor output according to the feedback information, so that the movement of the slide 3 is more stable and precise, and improves the accuracy of the position of the expansion and contraction hole.

[0038] In terms of control, industrial Internet of Things (IoT) technology is introduced to connect the various electric push rods of the equipment, such as the first hydraulic cylinder body 1, the second hydraulic cylinder body 6, the control unit 2, and the sensor body 8, into a network. Through the central control system, the operating status of the equipment can be remotely monitored and parameters can be adjusted in real time. For example, if fluctuations in the quality of the expansion and contraction holes of the pipe are found during the production process, the working status of the relevant components can be adjusted in a timely manner through remote operation. Preventive maintenance of the equipment can also be performed to detect potential faults in advance, reduce downtime, and improve the overall operating efficiency of the equipment.

[0039] Working principle: When using this multi-diameter expansion and contraction device, firstly, place the tube on the top of the workpiece holder 12. After the workpiece holder 12 bears the load, it moves downward and squeezes the tooling seat 10. The tooling seat 10 moves up and down on the surface of the base 11. The spring rod assembly 21 and the vertical groove 20 on the inner side of the base 11 provide buffer and movement space for the tooling seat 10.

[0040] At this time, the user uses the program operation control unit 2 on the control panel to send signals to the first cylinder body 1 and the second cylinder body 6. The expansion and contraction hole part 4 located on one side of the tooling frame 5 is driven by the corresponding control unit 2 and moves. The counter-punch shaft seat 7 located on the other side of the tooling frame 5 is also driven by the control unit 2 and moves. At the same time, the sensor body 8 can adjust the distance of the expansion and contraction hole part 4.

[0041] Next, the lead screw 9 rotates under the drive of the servo motor. The bearing at the bottom of the slide block 3, which matches the external thread of the lead screw 9, drives the slide block 3 to move on the top of the slide rail 15, so that the slide block 3 is close to both sides of the tooling frame 5. The control unit 2 drives the inner shaft of the expansion and contraction hole part 4 to enter the inner side of the stuck tube. The other side of the tube is pressed against by the counter-punch shaft seat 7 to perform the expansion operation. When shrinking the hole, the surface of the expansion and contraction hole part 4 is provided with an inner groove. The outer side of the tube is stuck by the enclosed inner groove to perform the shrinking operation.

[0042] During operation, the anti-sway mechanism plays a role. When the upper mold 22 descends, it drives the rack 23 to descend. The rack 23 moves to one side of the gear 16, causing the gear 16 to rotate. The limit plate 17 rotates in coordination with the gear 16. The rod connected to the rear end of the gear 16 drives the crank arm assembly 19 to rotate. The crank arm assembly 19 drives the vertical bar 18 to move up and down. The rectangular structure at the top of the vertical bar 18 presses down on both sides of the tube to prevent the tube from tilting or shaking when expanding or contracting the hole.

[0043] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A device for expanding and contracting orifices of various diameters, comprising: The machine base (14) and the anti-sway mechanism are characterized in that: slide rails (15) are provided on both sides of the top of the machine base (14); a lead screw (9) is provided horizontally in the middle of the inner side of the machine base (14); slide seats (3) are provided on both sides of the slide rails (15); a control part (2) is provided at one end of the inner side of the slide seat (3); an expansion and contraction hole part (4) is provided at one end of the slide seat (3) on one side of the machine base (14); a counter-impact bearing seat (7) is provided at one end of the slide seat (3) on the other side of the machine base (14); and a sensor body (8) is provided at the lower end of the outer side of the slide seat (3). The slide (3) is provided with a first cylinder body (1) on the side near the machine base (14). The machine base (14) is provided with a base (11) in the middle. The base (11) is provided with a vertical groove (20) on the inner side. The vertical groove (20) is provided with a spring rod assembly (21) on the inner side. The spring rod assembly (21) is provided with a tooling seat (10) on the outside. The tooling seat (10) is provided with a workpiece holder (12) on the top. The base (11) is provided with a tooling frame (5) on the outside. The tooling frame (5) is provided with a top groove (13) on the top. The second cylinder body (6) is vertically inserted through the inner side of the top groove (13). The bottom of the second cylinder body (6) is provided with an upper clamping mold (22); The anti-sway mechanism is used to prevent the object from shaking when it is expanded or contracted through the hole.

2. The expansion and contraction device suitable for multi-diameter orifices according to claim 1, characterized in that, The sensor body (8) can send signals to the control unit (2) to which both the first cylinder body (1) and the second cylinder body (6) are connected, and the sensor body (8) causes the first cylinder body (1) and the second cylinder body (6) to perform corresponding actions.

3. The expanding and contracting orifice device suitable for multiple diameters according to claim 1, characterized in that, The second cylinder body (6) can drive the upper clamping mold (22) to move horizontally up and down inside the tooling frame (5).

4. The expansion and contraction device suitable for multi-diameter orifices according to claim 1, characterized in that, The second cylinder body (6) can move up and down inside the top groove (13).

5. The expansion and contraction device suitable for multi-diameter orifices according to claim 1, characterized in that, The first cylinder body (1) can drive the slide (3) to move on the top of the slide rail (15), and the bottom of the slide (3) is provided with a bearing that matches the external thread of the lead screw (9).

6. The expanding and contracting orifice device according to claim 1, characterized in that, The tooling base (10) has a hole on its outside, and the inside of the hole is connected to the spring rod assembly (21). The tooling base (10) can move up and down outside the spring rod assembly (21).

7. The expansion and contraction device suitable for multi-diameter orifices according to claim 1, characterized in that, The anti-sway mechanism includes a rack (23), a gear (16), a limiting plate (17), a vertical bar (18), and a crank arm assembly (19). The rack (23) is provided at the outer axis symmetry of the upper clamping mold (22), and the limiting plate (17) is provided at the outer axis symmetry of the workpiece clamping seat (12). A gear (16) is provided at one end of the limiting plate (17), and a crank arm assembly (19) is provided on the other side of the gear (16) coaxially. A vertical bar (18) is provided at the top of the crank arm assembly (19). The structure at the connection between the vertical bar (18) and the crank arm assembly (19) is a vertical structure, and the top structure of the vertical bar (18) is a rectangular structure. The length of the rectangular structure at the top of the vertical bar (18) is equal to the width of the workpiece clamping seat (12).

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