Tool capable of automatically switching clamping

Abstract

The utility model discloses a tool capable of automatically switching clamping, and particularly relates to the technical field of tools, the tool comprises a bottom plate, the rear end part of the bottom plate is fixedly connected with a vertical plate along the vertical direction, the outer walls of the top and the bottom of the vertical plate are respectively and fixedly connected with an upper fixing plate and a lower fixing plate, and a bidirectional threaded rod is connected between the upper fixing plate and the lower fixing plate; a first motor for driving the bidirectional threaded rod to rotate is fixedly installed at the bottom of the lower fixing plate, the exteriors of two reverse threads on the bidirectional threaded rod are connected with an upper movable rod and a lower movable rod respectively, and the upper movable rod is arranged above the lower movable rod. Two modes of outer circle clamping and inner circle clamping of a cylindrical workpiece are designed, when the outer circle is machined, the two conical clamping blocks are controlled to be clamped into inner holes in the two ends of the workpiece, the outer circle can be conveniently machined, the structural design is simple, operation is easy, the inner circle of the workpiece can be conveniently machined, and the machining efficiency is improved. And clamping switching is achieved when the outer circle and the inner circle of the cylindrical workpiece are machined.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, and more specifically, to a tooling for automatic switching clamping. Background Technology

[0002] Tooling clamping technology is an indispensable part of modern industrial production. It involves fixing, positioning, and stabilizing workpieces to ensure the accuracy and efficiency of the machining process. Early tooling clamping technology mainly relied on simple mechanical principles and manual operation. With the development of CNC machine tools and automation technology, tooling clamping technology has also developed towards high precision, high efficiency, and high automation.

[0003] When clamping cylindrical workpieces, common tooling fixtures typically only clamp one side of the workpiece, either the inner or outer circle. For example, when clamping only the outer circle, the inner circle can be machined. However, when the outer circle needs to be machined, it is necessary to move to the next machining process and use the inner circle clamping method to machine the outer circle of the workpiece. This cannot effectively integrate the two clamping methods on one tooling, resulting in complicated, time-consuming, and labor-intensive operations when both the inner and outer circles need to be machined simultaneously. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic switching clamping fixture.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic switching clamping fixture, comprising a base plate, a vertical plate fixedly connected to the rear end of the base plate along the vertical direction, an upper fixed plate and a lower fixed plate fixedly connected to the top and bottom outer walls of the vertical plate respectively, a bidirectional threaded rod connected between the upper fixed plate and the lower fixed plate, a first motor for driving the bidirectional threaded rod to rotate fixedly installed at the bottom of the lower fixed plate, an upper movable rod and a lower movable rod respectively connected to the two reverse threads on the bidirectional threaded rod, the upper movable rod being positioned above the lower movable rod, and one end of both the upper and lower movable rods penetrating and extending to the front side of the vertical plate, a first connecting block fixedly connected to the bottom of one end of the upper movable rod, an upper arc-shaped clamping plate fixedly connected to the bottom end of the first connecting block, a second connecting block fixedly connected to the top of one end of the lower movable rod, a lower arc-shaped clamping plate matching the structure of the upper arc-shaped clamping plate fixedly connected to the top of the second connecting block, a control switch installed on the top of the base plate, and an inner circle clamping assembly installed on the front side of the top of the vertical plate.

[0006] As a further improvement to the technical solution of this utility model, the connection between the upper fixing plate and the lower fixing plate and the outer wall of the vertical plate is welded. A bearing seat is installed at the bottom of the upper fixing plate corresponding to the end position of the bidirectional threaded rod. The first motor is fixedly connected to the bottom of the lower fixing plate by screws.

[0007] As a further improvement to the technical solution of this utility model, the upper movable rod and the lower movable rod are provided with internal thread holes on the outside of the two opposite external threads on the bidirectional threaded rod, the vertical plate is provided with a first limiting vertical hole on the outside of the upper movable rod in the vertical direction, and the vertical plate is provided with a second limiting vertical hole on the outside of the lower movable rod in the vertical direction.

[0008] As a further improvement to the technical solution of this utility model, the inner surfaces of the upper arc-shaped clamping plate and the lower arc-shaped clamping plate are both provided with rubber pads. The connection between the two ends of the first connecting block and the bottom of the upper movable rod and the top of the upper arc-shaped clamping plate is by welding. The connection between the two ends of the second connecting block and the bottom of the lower arc-shaped clamping plate and the top of the lower movable rod is also by welding.

[0009] As a further improvement to the technical solution of this utility model, both inner circular clamping assemblies include a convex plate fixedly connected to the front end of the vertical plate. A horizontal plate is fixedly connected to the top of the convex plate in the horizontal direction. One end of the horizontal plate extends to the outside of the vertical plate. A connecting frame is connected to the bottom of the horizontal plate. A horizontally driven cylinder is fixedly installed on the outer wall of the convex plate. The output end of the cylinder is fixedly connected to the outer wall of the connecting frame. A flip plate is connected to the inner side of the connecting frame. A conical locking block is fixedly provided on the bottom inner wall of the flip plate. A drive shaft is connected to the top of the flip plate inside the connecting frame. A second motor for driving the drive shaft to rotate is installed on the outer wall of the connecting frame. A locking screw is connected to the top outer wall of the flip plate.

[0010] As a further improvement to the technical solution of this utility model, the top of the connecting frame is provided with a T-shaped card block connected to the bottom of the horizontal plate, and the bottom of the horizontal plate is provided with a T-shaped groove along the horizontal direction corresponding to the outside of the T-shaped card block.

[0011] As a further improvement to the technical solution of this utility model, the second motor is fixedly connected to the outer wall of the connecting frame by screws, the top of the flip plate is provided with a shaft hole for the drive shaft to pass through, and the outer wall of the flip plate is provided with a screw hole for locking screw connection, and the screw hole communicates with the inside of the shaft hole.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model designs two methods for clamping cylindrical workpieces: outer circle clamping and inner circle clamping. When machining the outer circle, firstly, the first motor is controlled to run, driving the bidirectional threaded rod to rotate. The upper and lower movable rods connected by the two opposite threads keep moving in opposite directions. By controlling the upper and lower movable rods to gradually move away, the operable area of ​​the workpiece increases. Then, by retracting the piston rods of the cylinders on the two inner circle clamping components, the connecting frame is controlled to move laterally at the bottom of the horizontal plate, and the bottom flipping plate and conical block are driven to gradually approach the end of the workpiece, so that the conical block can be inserted into the inner hole of the workpiece to facilitate the machining of the outer circle. The structure is simple and easy to operate.

[0014] 2. When machining the inner circle of a workpiece is required, the upper and lower movable rods are gradually brought closer together and clamped. Then, the cylinder is controlled to push the connecting frame outward, moving the conical clamp away from the workpiece. At the same time, the second motor is controlled to drive the drive shaft to rotate, which in turn drives the flipping plate and the conical clamp to rotate. This ensures that the end position of the workpiece is not affected by the inner circle clamping assembly, facilitating the machining of the inner circle of the workpiece and enabling the switching of clamping between machining the outer and inner circles of cylindrical workpieces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram illustrating the clamping principle of the upper and lower arc-shaped clamping plates in this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the upper movable rod and the upper arc-shaped clamping plate in this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the conical card block and the flip plate in this utility model.

[0019] The attached diagram is labeled as follows: 1. Base plate; 2. Vertical plate; 3. Upper fixed plate; 4. Lower fixed plate; 5. Bidirectional threaded rod; 6. First motor; 7. Upper movable rod; 8. Lower movable rod; 9. First connecting block; 10. Upper arc-shaped clamping plate; 11. Second connecting block; 12. Lower arc-shaped clamping plate; 13. First limiting vertical hole; 14. Second limiting vertical hole; 15. Control switch; 16. Protruding plate; 17. Horizontal plate; 18. Cylinder; 19. Connecting frame; 20. T-shaped locking block; 21. Flipping plate; 22. Conical locking block; 23. Drive shaft; 24. Second motor; 25. Locking screw; 26. Shaft hole; 27. Screw hole. Detailed Implementation

[0020] 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.

[0021] As attached Figure 1-4 The automatic switching clamping fixture shown includes a base plate 1. A vertical plate 2 is fixedly connected to the rear end of the base plate 1 along the vertical direction. An upper fixed plate 3 and a lower fixed plate 4 are fixedly connected to the top and bottom outer walls of the vertical plate 2, respectively. A bidirectional threaded rod 5 is connected between the upper fixed plate 3 and the lower fixed plate 4. A first motor 6 that drives the bidirectional threaded rod 5 to rotate is fixedly installed at the bottom of the lower fixed plate 4. An upper movable rod 7 and a lower movable rod 8 are respectively connected to the two reverse threads on the bidirectional threaded rod 5. The upper movable rod 7 is positioned above the lower movable rod 8. Above 8, and one end of both the upper movable rod 7 and the lower movable rod 8 extends through and to the front side of the vertical plate 2. The bottom of one end of the upper movable rod 7 is fixedly connected to the first connecting block 9, the bottom end of the first connecting block 9 is fixedly connected to the upper arc-shaped clamping plate 10, the top of one end of the lower movable rod 8 is fixedly connected to the second connecting block 11, and the top of the second connecting block 11 is fixedly connected to the lower arc-shaped clamping plate 12 that matches the structure of the upper arc-shaped clamping plate 10. The top of the base plate 1 is equipped with a control switch 15, and the front of the top of the vertical plate 2 is equipped with an inner circle clamping assembly.

[0022] As attached Figure 2 As shown, the upper fixing plate 3 and the lower fixing plate 4 are connected to the outer wall of the vertical plate 2 by welding. A bearing seat is installed at the bottom of the upper fixing plate 3 corresponding to the end position of the bidirectional threaded rod 5. The first motor 6 is fixedly connected to the bottom of the lower fixing plate 4 by screws, which facilitates the installation and fixation of the first motor 6 and facilitates the first motor 6 to drive the bidirectional threaded rod 5 to rotate stably during operation.

[0023] As attached Figure 1-2 As shown, the upper movable rod 7 and the lower movable rod 8 are provided with internal threaded holes on the outside of the two opposite external threads on the bidirectional threaded rod 5. The upper movable rod 7 is provided with a first limiting vertical hole 13 on the outside of the vertical plate 2 along the vertical direction. The lower movable rod 8 is provided with a second limiting vertical hole 14 on the outside of the vertical plate 2 along the vertical direction, so that the upper movable rod 7 and the lower movable rod 8 can move vertically inside the first limiting vertical hole 13 and the second limiting vertical hole 14, respectively.

[0024] As attached Figure 1-3As shown, rubber pads are provided on the inner surfaces of the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 12 to provide a buffering and protective effect when clamping cylindrical workpieces. The connection between the two ends of the first connecting block 9 and the bottom of the upper movable rod 7 and the top of the upper arc-shaped clamping plate 10 is by welding. The connection between the two ends of the second connecting block 11 and the bottom of the lower arc-shaped clamping plate 12 and the top of the lower movable rod 8 is also by welding, which facilitates the connection between the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 12.

[0025] As attached Figure 1 and attached Figure 4 As shown, both inner circular clamping assemblies include a protruding plate 16 fixedly connected to the front end of the vertical plate 2. A horizontal plate 17 is fixedly connected to the top of the protruding plate 16 in the horizontal direction. One end of the horizontal plate 17 extends to the outside of the vertical plate 2. A connecting frame 19 is connected to the bottom of the horizontal plate 17. A horizontally driven cylinder 18 is fixedly installed on the outer wall of the protruding plate 16. The output end of the cylinder 18 is fixedly connected to the outer wall of the connecting frame 19. A flipping plate 21 is connected to the inner side of the connecting frame 19. A conical block 22 is fixedly provided on the bottom inner wall of the flipping plate 21. A drive shaft 23 is connected to the top of the flipping plate 21 inside the connecting frame 19. A second motor 24 that drives the drive shaft 23 to rotate is installed on the outer wall of the connecting frame 19. The top outer wall of the 21 is connected to a locking screw 25. The top of the connecting frame 19 is provided with a T-shaped block 20 connected to the bottom of the horizontal plate 17. The bottom of the horizontal plate 17 is provided with a T-shaped groove along the horizontal direction corresponding to the outside of the T-shaped block 20. The second motor 24 is fixedly connected to the outer wall of the connecting frame 19 by screws. The top of the flip plate 21 is provided with a shaft hole 26 for the drive shaft 23 to pass through, and the outer wall of the flip plate 21 is provided with a screw hole 27 for the locking screw 25 to be connected. The screw hole 27 communicates with the inside of the shaft hole 26, so that when it is necessary to process the outer circle of the cylindrical workpiece, it can be switched to the inner circle clamping method to clamp and fix the cylindrical workpiece, thereby facilitating the subsequent outer circle processing.

[0026] Working principle: This utility model designs an automatic clamping and switching fixture, the specific structure of which is shown in the attached instruction manual. Figure 1-4As shown, this technical solution designs two methods for clamping the cylindrical workpiece: outer circle clamping and inner circle clamping. During outer circle machining, the first motor 6 is controlled to run, driving the bidirectional threaded rod 5 to rotate. The upper movable rod 7 and lower movable rod 8, connected externally by two opposing threads, maintain opposite movements. By controlling the upper movable rod 7 and lower movable rod 8 to gradually move away (i.e., the upper movable rod 7 moves upward and the lower movable rod 8 moves downward), the operable area of ​​the workpiece increases. Then, by retracting the piston rods of the cylinders 18 on the two inner circle clamping assemblies, the connecting frame 19 is controlled to move laterally at the bottom of the horizontal plate 17, causing the bottom flipping plate 21 and the conical clamping block 22 to gradually move closer. The workpiece end is clamped, and the conical clamping block 22 is inserted into the inner hole of the workpiece to facilitate the machining of the outer circle. When the inner circle of the workpiece needs to be machined, the previous steps are reversed. The upper movable rod 7 and the lower movable rod 8 are controlled to gradually approach and clamp the workpiece. Then, the cylinder 18 is controlled to push the connecting frame 19 outward, so that the conical clamping block 22 is away from the workpiece. At the same time, the second motor 24 is controlled to run and drive the drive shaft 23 to rotate, which drives the flipping plate 21 and the conical clamping block 22 to rotate. This makes the end position of the workpiece unaffected by the inner circle clamping assembly, which facilitates the machining of the inner circle of the workpiece and realizes the clamping switch when machining the outer and inner circles of cylindrical workpieces.

[0027] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for automatic clamping switching, characterized in that: The system includes a base plate (1), a vertical plate (2) fixedly connected to the rear end of the base plate (1) in the vertical direction, an upper fixed plate (3) and a lower fixed plate (4) fixedly connected to the top and bottom outer walls of the vertical plate (2), a bidirectional threaded rod (5) connected between the upper fixed plate (3) and the lower fixed plate (4), a first motor (6) for driving the bidirectional threaded rod (5) to rotate fixedly installed at the bottom of the lower fixed plate (4), an upper movable rod (7) and a lower movable rod (8) connected to the two reverse threads on the bidirectional threaded rod (5), the upper movable rod (7) being positioned above the lower movable rod (8), and... One end of the upper movable rod (7) and the lower movable rod (8) both penetrate and extend to the front side of the vertical plate (2). The bottom of one end of the upper movable rod (7) is fixedly connected to a first connecting block (9). The bottom end of the first connecting block (9) is fixedly connected to an upper arc-shaped clamping plate (10). The top of one end of the lower movable rod (8) is fixedly connected to a second connecting block (11). The top of the second connecting block (11) is fixedly connected to a lower arc-shaped clamping plate (12) that matches the structure of the upper arc-shaped clamping plate (10). A control switch (15) is installed on the top of the base plate (1). An inner circle clamping assembly is installed on the front side of the top of the vertical plate (2). Both inner circular clamping assemblies include a convex plate (16) fixedly connected to the front end of the vertical plate (2). A horizontal plate (17) is fixedly connected to the top of the convex plate (16) in the horizontal direction. One end of the horizontal plate (17) extends to the outside of the vertical plate (2). A connecting frame (19) is connected to the bottom of the horizontal plate (17). A horizontally driven cylinder (18) is fixedly installed on the outer wall of the convex plate (16). The output end of the cylinder (18) is fixedly connected to the outer wall of the connecting frame (19). A flip plate (21) is connected to the inner side of the connecting frame (19). A conical block (22) is fixedly provided on the bottom inner wall of the flip plate (21). A drive shaft (23) is connected to the top of the flip plate (21) inside the connecting frame (19). A second motor (24) that drives the drive shaft (23) to rotate is installed on the outer wall of the connecting frame (19). A locking screw (25) is connected to the top outer wall of the flip plate (21).

2. The tooling for automatic clamping switching according to claim 1, characterized in that: The upper fixing plate (3) and the lower fixing plate (4) are connected to the outer wall of the vertical plate (2) by welding. A bearing seat is installed at the bottom of the upper fixing plate (3) corresponding to the end position of the bidirectional threaded rod (5). The first motor (6) is fixedly connected to the bottom of the lower fixing plate (4) by screws.

3. The tooling for automatic clamping switching according to claim 1, characterized in that: The upper movable rod (7) and the lower movable rod (8) are provided with internal thread holes on the two opposite external threads on the bidirectional threaded rod (5). The upper plate (2) is provided with a first limiting vertical hole (13) on the outside of the upper movable rod (7) in the vertical direction. The upper plate (2) is provided with a second limiting vertical hole (14) on the outside of the lower movable rod (8) in the vertical direction.

4. The tooling for automatic clamping switching according to claim 1, characterized in that: The inner surfaces of the upper arc-shaped clamp (10) and the lower arc-shaped clamp (12) are provided with rubber pads. The connection between the two ends of the first connecting block (9) and the bottom of the upper movable rod (7) and the top of the upper arc-shaped clamp (10) is by welding. The connection between the two ends of the second connecting block (11) and the bottom of the lower arc-shaped clamp (12) and the top of the lower movable rod (8) is by welding.

5. The tooling for automatic clamping switching according to claim 1, characterized in that: The top of the connecting frame (19) is provided with a T-shaped card block (20) connected to the bottom of the horizontal plate (17), and the bottom of the horizontal plate (17) is provided with a T-shaped groove along the horizontal direction corresponding to the outside of the T-shaped card block (20).

6. The tooling for automatic clamping switching according to claim 1, characterized in that: The second motor (24) is fixedly connected to the outer wall of the connecting frame (19) by screws. The top of the flip plate (21) is provided with a shaft hole (26) for the drive shaft (23) to pass through, and the outer wall of the flip plate (21) is provided with a screw hole (27) for the locking screw (25) to be connected. The screw hole (27) is in communication with the inside of the shaft hole (26).

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