Wedge-shaped rapid clamping tool

Abstract

The invention discloses a wedge-shaped rapid clamping tool which comprises a guide wedge block and a jacking wedge block and further comprises a fixing table, the mutual contact face of the guide wedge block and the jacking wedge block forms an inclined face arranged in an inclined mode, and the guide wedge block and the jacking wedge block slide along the inclined face. The guide wedge block and the jacking wedge block form a whole through a connecting structure, and the connecting structure forms driving force for driving the jacking wedge block to slide relative to the guide wedge block. The clamping tool is simple in structure and easy to manufacture; the tool is high in flexibility and can be freely combined for use; the size range of parts clamped by the tool is large, and the position of the tool can be adjusted at any time according to the appearance size of the parts; the tool is convenient to operate, a tedious clamping process is not needed, and the clamping efficiency is improved. The tool is convenient to operate, a tedious clamping process is not needed, and the clamping efficiency is improved. According to the improved rapid clamping tool, the jacking wedge block can be prevented from generating rotating torque in the jacking process in the clamping process, and therefore the situation that the jacking wedge block abrades the surface of a workpiece can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of clamping tooling, and in particular to a wedge-shaped quick clamping tooling. Background Art

[0002] The clamping tools we commonly use are generally flat-nose pliers and three-jaw chucks, but these clamping tools can only be used to clamp parts with regular shapes, and they need to be fixed on the equipment workbench. The fixing method is relatively cumbersome, requiring multiple bolts, nuts, pressure plates, etc., and clamping and disassembly are time-consuming and labor-intensive.

[0003] In addition, there are also methods of clamping and fixing with a top block to determine the position, clamping and positioning with a universal aperture platform tooling, and clamping and positioning with a special tooling and a vise clamp. The universal aperture platform tooling is generally only suitable for rough machining with corresponding clamping holes or fine machining on the blank; the design and production cycle of special tooling is long, and it is not universal, cannot meet different production needs, and is not suitable for rough machining; the vise clamp is only suitable for small simple structural parts with small cutting force during machining. Therefore, the clamping method for rough machining usually chooses to use a top block to determine the position and clamping with a pressure plate.

[0004] In addition, the top blocks currently used in production often become loose and slip during the clamping process, resulting in failure of part clamping, quality and safety hazards, and physical quality failures.

[0005] In view of the above, it is necessary to propose a wedge-shaped quick clamping tool to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects in the prior art and provide a wedge-shaped quick clamping tool.

[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a wedge-type quick clamping tool, including a guide wedge block, a jacking wedge block, and a fixed platform, the guide wedge block is adjustably installed on the fixed platform, the contact surfaces of the guide wedge block and the jacking wedge block form an inclined surface, and the guide wedge block and the jacking wedge block slide along the inclined surface; the guide wedge block and the jacking wedge block are formed into a whole through a connecting structure, and the connecting structure forms a driving force for driving the jacking wedge block to slide relative to the guide wedge block.

[0008] Furthermore, the fixed platform is provided with a plurality of T-shaped grooves in parallel, and the wedge-shaped quick clamping tool also includes a T-shaped nut, which is slidably arranged in the T-shaped groove, and the T-shaped nut is provided with a first threaded hole, and a step plate is extended on one side of the guide wedge block, and a through hole is provided on the step plate, and a fixing bolt threadedly connected to the first threaded hole is provided through the through hole, so that the guide wedge block and the T-shaped nut are clamped and fixed on the T-shaped groove.

[0009] Furthermore, a raised guide rail is provided on the inclined surface of the guide wedge block, and the extension direction of the raised guide rail is arranged parallel to the inclination direction of the inclined surface. A U-shaped groove is provided on the inclined surface of the jacking wedge block, and the U-shaped groove cooperates with the raised guide rail.

[0010] Furthermore, the connecting structure includes a second threaded hole, a through groove, and a screw. The second threaded hole is opened on the raised guide rail along the vertical direction. The through groove is a through groove arranged in the vertical direction in the jacking wedge block. The through groove includes an upper recessed groove and a lower through hole. The bottom of the upper recessed groove is connected to the lower through hole so that the lower through hole passes through the U-shaped groove, and the horizontal area of ​​the upper recessed groove is larger than the horizontal area of ​​the lower through hole. The screw passes through the through groove from top to bottom and is screwed in the second threaded hole.

[0011] Furthermore, the guide wedge block includes a fixed block and a lifting block, the side where the fixed block and the lifting block are in contact with each other is a vertical plane, and the lifting block moves up and down along the vertical plane relative to the fixed block; the side of the lifting block away from the fixed block is an inclined surface, and the slope of the inclined surface is directed obliquely downward; the inclined surface of the jacking wedge block is directed obliquely upward, and the two inclined surfaces are arranged in contact with each other.

[0012] Furthermore, the connecting structure includes a T-shaped connecting piece, which includes a horizontal rod and a vertical rod. The vertical rod is vertically fixed in the middle of the horizontal rod. The fixing block and the tightening wedge block are close to each other and are provided with guide holes for inserting the end of the horizontal rod. The lower end surface of the lifting block is provided with an avoidance groove.

[0013] Furthermore, a through hole is provided in the lifting block along the vertical direction, and the vertical rod passes upward from the through hole. A threaded portion is formed on the upper end of the vertical rod, and a clamping nut is provided in cooperation with the threaded portion.

[0014] Furthermore, the bottom protrusion of the jacking wedge is provided with strip-shaped ribs, and the strip-shaped ribs cooperate with the T-shaped grooves to limit the moving direction of the jacking wedge.

[0015] Furthermore, the lower side of the front end of the jacking wedge block extends toward the front end to form a bottom clamping end, and an arc-shaped surface transitions between the bottom clamping end and the upper end surface of the jacking wedge block.

[0016] The advantages and beneficial effects of the present invention are as follows: the structure of the clamping tool is simple and easy to manufacture; the tool is highly flexible and can be used in any combination; the size range of the parts clamped by the tool is large, and the position of the tool can be adjusted at any time according to the size of the parts; the tool is easy to operate, and no cumbersome clamping process is required, thereby improving the clamping efficiency. The improved quick clamping tool can prevent the jacking wedge from generating a rotational torque during the tightening process during the clamping process, thereby preventing the jacking wedge from causing wear on the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a wedge-shaped quick clamping tool of the present invention; Figure 2 It is a schematic diagram of a wedge-shaped quick clamping tool for clamping a workpiece according to the present invention; Figure 3 is a schematic diagram of the guide wedge structure; Figure 4 Schematic diagram of the jacking wedge structure Figure 1 ; Figure 5 Schematic diagram of the jacking wedge structure Figure 2 ; Figure 6 It is a schematic diagram of the structure of a trapezoidal nut; Figure 7 It is a schematic diagram of the lifting block at the top dead center in the second embodiment of the present invention; Figure 8 It is a schematic diagram of the lifting block at the bottom dead center in the second embodiment of the present invention; Fig. 9 An exploded view of a second embodiment of the present invention; Fig.10 It is a longitudinal cross-sectional schematic diagram of a second embodiment of the present invention; In the figure: 1. guide wedge; 2. jacking wedge; 3. fixing table; 4. inclined surface; 5. connecting structure; 6. T-shaped groove; 7. T-shaped nut; 8. first threaded hole; 9. step plate; 10. through hole; 11. fixing bolt; 12. raised guide rail; 13. U-shaped groove; 14. second threaded hole; 15. through groove; 16. screw; 17. upper sink groove; 18. lower through hole; 19. fixing block; 20. lifting block; 21. vertical surface; 22. T-shaped connector; 23. horizontal rod; 24. vertical rod; 25. guide hole; 26. avoidance groove; 27. through hole; 28. threaded portion; 29. ​​clamping nut; 30. strip rib; 31. clamping end; 32. arc surface; 33. workpiece. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example

[0019] A wedge-shaped quick-clamping tool, such as Figure 1-6 As shown, it includes a guide wedge 1, a jacking wedge 2, and a fixed platform 3. The guide wedge 1 is adjustably mounted on the fixed platform 3. Figure 2As shown, the fixing platform 3 is provided with a plurality of T-shaped grooves 6 in parallel, and the quick clamping tool is fixed on its plane through the T-shaped grooves 6, and a plurality of quick clamping tools can be installed as needed, such as Figure 2 As shown, two quick clamping fixtures are installed on both sides of the workpiece 33 to form a relative support and fixation for the workpiece 33. Further, the wedge-shaped quick clamping fixture also includes a T-shaped nut 7, such as Figure 6 As shown, the T-shaped nut 7 is slidably disposed in the T-shaped groove 6, and a first threaded hole 8 is provided on the T-shaped nut 7. A step plate 9 is extended on one side of the guide wedge 1, and a through hole 10 is provided on the step plate 9. A fixing bolt 11 is provided through the through hole 10 and is screwed to the first threaded hole 8, so that the guide wedge 1 and the T-shaped nut 7 are clamped and fixed on the T-shaped groove 6. Figure 1 As shown, the guide wedge 1 and the T-nut 7 are pre-connected together by the fixing bolt 11, and then the T-nut 7 is inserted from one end of the T-slot 6, and the entire tooling is moved from the upper side of the fixed table 3 toward the workpiece 33. When moving and approaching the workpiece 33, the fixing bolt 11 is tightened to firmly mount the tooling on the fixed table 3.

[0020] Specifically, the contact surfaces of the guide wedge block 1 and the jacking wedge block 2 in the quick clamping tool form an inclined surface 4, and the guide wedge block 1 and the jacking wedge block 2 slide along the inclined surface 4, as shown in FIG. Figure 3 As shown, the inclined surface 4 of the guide wedge 1 is inclined upward, while the opposite Figure 4 As shown, the inclined surface 4 of the jacking wedge 2 is inclined downward; it can be understood that, as Figure 1 As shown, before clamping the workpiece 33, the jacking wedge 2 is located on the upper side of the inclined surface 4. When the workpiece 33 needs to be pressed, the jacking wedge 2 is pressed down so that it slides along the inclined surface 4, and the jacking wedge 2 is gradually pushed onto the surface of the workpiece 33 under the guidance of the inclined surface 4. In order to avoid misalignment between the jacking wedge 2 and the guide wedge 1 during sliding, specifically, as shown in FIG. Figure 3-5 As shown, a raised guide rail 12 is provided on the inclined surface 4 of the guide wedge block 1, and the extension direction of the raised guide rail 12 is arranged parallel to the inclination direction of the inclined surface 4. A U-shaped groove 13 is provided on the inclined surface 4 of the jacking wedge block 2, and the U-shaped groove 13 cooperates with the raised guide rail 12. During sliding, the lateral movement of the jacking wedge block 2 can be avoided under the cooperation of the raised guide rail 12 and the U-shaped groove 13.

[0021] Furthermore, the guide wedge 1 and the jacking wedge are integrally connected by a connecting structure 5, and the connecting structure 5 forms a driving force for driving the jacking wedge 2 to slide relative to the guide wedge 1. Specifically, the connecting structure 5 includes a second threaded hole 14, a through slot 15, and a screw 16. Figure 3 As shown, the second threaded hole 14 is formed on the raised guide rail 12 along the vertical direction. Figure 4 , 5 As shown, the through groove 15 is a through groove 15 provided in the jacking wedge 2 along the vertical direction, and the through groove 15 includes an upper sunken groove 17 and a lower through hole 18. The bottom of the upper sunken groove 17 is connected to the lower through hole 18. The upper sunken groove 17 is a sunken groove provided on the upper end surface of the jacking wedge 2. The lower through hole 18 penetrates downward to the inclined surface 4 at its bottom to form the through groove 15, so that the lower through hole 18 penetrates the U-shaped channel 13, and the horizontal area of ​​the upper sunken groove 17 is larger than the horizontal area of ​​the lower through hole 18. The screw 16 passes through the through groove 15 from top to bottom and is screwed into the second threaded hole 14. In actual use, when the screw 16 is tightened, a downward pressure is applied to the jacking wedge 2 through the screw 16, thereby driving it to slide downward along the inclined surface 4 and clamp the workpiece 33.

[0022] Furthermore, the lower side of the front end of the jacking wedge block 2 extends to the front end to form a bottom clamping end 31, and the bottom clamping end 31 and the upper end surface of the jacking wedge block 2 are transitioned through an arc surface 32. Figure 2 As shown, this embodiment can clamp the workpiece 33 at a lower position by setting the clamping end 31, so that the lower part of the workpiece 33 can be easily turned after clamping, and the arc surface 32 is used for transition, so that sufficient processing space can be freed up around the workpiece 33, which is convenient for subsequent processing of the workpiece 33. Example

[0023] like Figure 1 As shown, in the first embodiment, before the workpiece 33 is clamped, the jacking wedge block 2 is located at the upper dead center. At this time, the lower end face of the jacking wedge block 2 is a certain distance away from the fixed platform 3. When the screw 16 is tightened, the jacking wedge block 2 is driven to slide downward, and the clamping end 31 contacts the surface of the workpiece 33. At this time, the lower end face of the jacking wedge block 2 is still a certain distance away from the fixed platform 3, and in order to maintain a certain clamping force, the screw 16 must continue to be tightened. Since the screw 16 is a certain distance away from the clamping end 31, when the jacking wedge block 2 is continued to be pressed down, the jacking wedge block 2 will take the clamping end 31 in contact with the workpiece 33 as the center of the circle, and the screw 16 applies a rotational torque to the jacking wedge block 2, thereby causing the tooling to be tilted and clamped lightly, which is easy to cause an accidental clamping failure during the subsequent processing of the workpiece 33.

[0024] As an improvement, specifically, Figure 7-10As shown, in the present embodiment, the guide wedge block 1 includes a fixed block 19 and a lifting block 20, the fixed block 19 and the lifting block 20 are fitted together on one side with a vertical surface 21, and on the other side with an inclined surface 4, the lifting block 20 moves up and down along the vertical surface 21 relative to the fixed block 19; the lifting block 20 has an inclined surface 4 on the side away from the fixed block 19, and in the present embodiment, the slope direction of the inclined surface 4 of the lifting block 20 faces obliquely downward; the inclined surface 4 of the jacking wedge block 2 faces obliquely upward, and the two inclined surfaces 4 are fitted together.

[0025] In this embodiment, the connection structure 5 includes a T-shaped connection member 22, such as Fig. 9 As shown, the T-shaped connecting member 22 includes a horizontal rod 23 and a vertical rod 24. The vertical rod 24 is vertically fixedly arranged in the middle of the horizontal rod 23. Fig.10 As shown, the fixed block 19 and the tightening wedge block are provided with a guide hole 25 for inserting the end of the horizontal rod 23 on one side close to each other, and the lower end surface of the lifting block 20 is provided with an avoidance groove 26. When in use, the two ends of the horizontal rod 23 are inserted into the tightening wedge blocks and the fixed block 19 at both ends. One side can connect the two as a whole, which can guide the advancement of the jacking wedge block 2, and the other side can provide a basis for the setting of the vertical rod 24, providing a source of downward pressure for the lifting block 20.

[0026] Furthermore, a through hole 27 is provided in the lifting block 20 along the vertical direction, and the vertical rod 24 extends upward from the through hole 27. A threaded portion 28 is formed at the upper end of the vertical rod 24, and a clamping nut 29 is provided in cooperation with the threaded portion 28. In actual use, the lifting block 20 is installed between the jacking wedge block 2 and the fixed block 19. When the lifting block 20 is pressed down, the jacking wedge block 2 can be pushed out through the interacting inclined surfaces 4. It can be understood that in this embodiment, the bottom surface of the jacking wedge block 2 is always in contact with the surface of the fixed platform 3, so that pressure is applied to the surface of the workpiece 33 during clamping, and the jacking wedge block 2 will not generate a rotational torque, thereby making the clamping more stable. Furthermore, the bottom protrusion of the jacking wedge block 2 is provided with a strip rib 30, and the strip rib 30 cooperates with the T-shaped groove 6 to limit the moving direction of the jacking wedge block 2. As shown in FIG. Figure 9-10 As shown, in order to prevent the lifting block 20 from interfering with the horizontal rod 23 during the downward movement, an avoidance groove 26 is provided which penetrates in the longitudinal direction so that the lifting block 20 can reach the lowest point.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wedge-shaped quick clamping tool, characterized in that: The invention comprises a guide wedge (1), a jacking wedge (2), and a fixed platform (3), wherein the guide wedge (1) is adjustably mounted on the fixed platform (3), the contact surfaces of the guide wedge (1) and the jacking wedge (2) form an inclined surface (4), and the guide wedge (1) and the jacking wedge (2) slide along the inclined surface (4); the guide wedge (1) and the jacking wedge are integrally formed by a connecting structure (5), and the connecting structure (5) forms a driving force for driving the jacking wedge (2) to slide relative to the guide wedge (1).

2. A wedge-shaped quick-clamping tool according to claim 1, characterized in that: A plurality of T-shaped grooves (6) are arranged in parallel on the fixing platform (3), and the wedge-shaped quick clamping tool further comprises a T-shaped nut (7), the T-shaped nut (7) is slidably arranged in the T-shaped groove (6), and the T-shaped nut (7) is provided with a first threaded hole (8), and a step plate (9) is extended on one side of the guide wedge block (1), and the step plate (9) is provided with a through hole (10), and a fixing bolt (11) is provided through the through hole (10) and is screwed to the first threaded hole (8), so that the guide wedge block (1) and the T-shaped nut (7) are clamped and fixed on the T-shaped groove (6).

3. A wedge-shaped quick-clamping tool according to claim 1, characterized in that: The inclined surface (4) of the guide wedge block (1) is provided with a raised guide rail (12), and the extending direction of the raised guide rail (12) is arranged parallel to the inclination direction of the inclined surface (4). The inclined surface (4) of the jacking wedge block (2) is provided with a U-shaped groove (13), and the U-shaped groove (13) cooperates with the raised guide rail (12).

4. A wedge-shaped quick-clamping tool according to claim 3, characterized in that: The connection structure (5) comprises a second threaded hole (14), a through groove (15), and a screw (16). The second threaded hole (14) is formed on the raised guide rail (12) along the vertical direction. The through groove (15) is a through groove (15) provided in the jacking wedge block (2) along the vertical direction. The through groove (15) comprises an upper recessed groove (17) and a lower through hole (18). The lower through hole (18) is provided at the bottom of the upper recessed groove (17) so that the lower through hole (18) passes through the U-shaped channel (13). The horizontal area of ​​the upper recessed groove (17) is larger than the horizontal area of ​​the lower through hole (18). The screw (16) passes through the through groove (15) from top to bottom and is screwed into the second threaded hole (14).

5. A wedge-shaped quick-clamping tool according to claim 2, characterized in that: The guide wedge block (1) comprises a fixed block (19) and a lifting block (20); one side of the fixed block (19) and the lifting block (20) being in contact with each other is a vertical surface (21); the lifting block (20) is movable up and down along the vertical surface (21) relative to the fixed block (19); the side of the lifting block (20) away from the fixed block (19) is an inclined surface (4); the inclined surface (4) is oriented obliquely downward; the inclined surface (4) of the jacking wedge block (2) is oriented obliquely upward, and the two inclined surfaces (4) are arranged in contact with each other.

6. A wedge-shaped quick-clamping tool according to claim 5, characterized in that: The connection structure (5) comprises a T-shaped connection piece (22), the T-shaped connection piece (22) comprises a horizontal rod (23) and a vertical rod (24), the vertical rod (24) is vertically fixedly arranged in the middle of the horizontal rod (23), the fixing block (19) and the tightening wedge block are provided with a guide hole (25) for inserting the end of the horizontal rod (23) on one side close to each other, and the lower end surface of the lifting block (20) is provided with an avoidance groove (26).

7. A wedge-shaped quick-clamping tool according to claim 6, characterized in that: A through hole (27) is provided in the lifting block (20) along the vertical direction, and the vertical rod (24) extends upward through the through hole (27). A threaded portion (28) is formed at the upper end of the vertical rod (24), and a clamping nut (29) is provided in cooperation with the threaded portion (28).

8. The wedge-shaped quick-clamping tool according to claim 5, characterized in that: The bottom protrusion of the jacking wedge (2) is provided with strip-shaped ribs (30), and the strip-shaped ribs (30) cooperate with the T-shaped groove (6) to limit the moving direction of the jacking wedge (2).

9. The wedge-shaped quick-clamping tool according to claim 1, characterized in that: The lower side of the front end of the jacking wedge (2) extends toward the front end to form a bottom clamping end (31), and a curved surface (32) transitions between the bottom clamping end (31) and the upper end surface of the jacking wedge (2).

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