Clamping jig for special-shaped part

Abstract

The utility model provides a clamping jig for a special-shaped piece, which relates to the technical field of clamping jigs and comprises a jig body, a transverse rail and a longitudinal rail, the transverse rail and the longitudinal rail are arranged on a table top of the jig body, a plurality of linearly distributed longitudinal grooves are arranged on the table top of the jig body at the position of the transverse rail, and a plurality of parallelly distributed transverse grooves are arranged on the table top of the jig body at the position of the longitudinal rail. Connecting blocks are inserted into the transverse grooves and the longitudinal grooves located in the same side of the jig body, the connecting blocks located in the transverse grooves and the longitudinal grooves are fixed to the bottom edges of the longitudinal rails and the bottom edges of the transverse rails correspondingly, the longitudinal grooves are formed in the transverse rails, the transverse grooves are formed in the longitudinal rails, and the positions can be further adjusted by means of sliding of the transverse rails in the longitudinal grooves; the positions of the longitudinal rails can be further adjusted through sliding of the longitudinal rails in the transverse grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping fixtures, in particular to a clamping fixture for special-shaped parts. Background Art

[0002] The main function of a clamping fixture is to fix a workpiece, so that it maintains a stable position and posture during the processes of machining, inspection or assembly. By using appropriate fixtures, production efficiency can be improved, product quality can be guaranteed, and human errors can be reduced.

[0003] For example, a special-shaped part clamping fixture with a publication number of CN217291393U includes a base. The base includes a support plate and feet fixedly arranged at the bottom of the support plate; mutually perpendicular cross rails and longitudinal rails are arranged on the support plate. The number of the cross rails and the longitudinal rails is at least two, and stoppers are movably arranged on the cross rails and the longitudinal rails. The stoppers are arranged vertically; a receiving hole is axially formed in the stopper along the axis of the stopper, and a sliding block is movably arranged up and down in the receiving hole. A pressing plate is arranged at the edge of the sliding block. A through groove horizontally penetrating through the stopper and for the pressing plate to move up and down is formed in the side wall of the receiving hole corresponding to the pressing plate, and the pressing plate extends outwards beyond the corresponding through groove. The support plate is used for supporting the special-shaped part. By moving the stoppers to the edge of the special-shaped part, the special-shaped part can be fixed in the horizontal direction. At the same time, by moving the pressing plate downwards to press on the special-shaped part, the special-shaped part can be fixed in the vertical direction, so that the special-shaped part can be fixed on the base, and the fixation of the special-shaped part is realized.

[0004] However, because the extending directions of the cross rails and the longitudinal rails are fixed, the stoppers arranged on the cross rails and the longitudinal rails can only move along the extending directions of the cross rails and the longitudinal rails. Moreover, the cross rails and the longitudinal rails are fixed on the support plate, resulting in limited sizes of workpieces that can be placed between the cross rails and the longitudinal rails. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems of the prior art, and a clamping fixture for special-shaped parts is proposed.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A clamping fixture for special-shaped parts, including a fixture body, a cross rail and a longitudinal rail arranged on the tabletop of the fixture body. The tabletop of the fixture body is provided with a number of longitudinally distributed longitudinal grooves at the position of the cross rail and a number of parallelly distributed transverse grooves at the position of the longitudinal rail. Connecting blocks are inserted into a number of the transverse grooves and longitudinal grooves on the same side of the fixture body. The connecting blocks located in the transverse grooves and longitudinal grooves are respectively fixed to the bottom edges of the longitudinal rail and the cross rail. And a screw rod rotatably installed at the bottom of the fixture body tabletop threadedly penetrates through one side of the connecting block. One end of the screw rod facing the middle of the fixture body is fixedly connected with a driven bevel gear. A number of the driven bevel gears are distributed in a circular array. And a rotating frame is rotatably connected to the bottom of the fixture body tabletop. Two symmetrically arranged driving bevel gears for meshing connection with the driven bevel gears are rotatably connected to both ends of the rotating frame body at the position of the driving bevel gear.

[0007] Preferably, a dual-axis motor is fixedly connected inside the rotating frame. Two main shafts of the dual-axis motor respectively extend to be rotatably connected to both ends of the rotating frame, and driving bevel gears are fixedly connected to the main shafts.

[0008] Preferably, the driving bevel gear is located between the two driving bevel gears and is meshed with the opposite surfaces of the two driving bevel gears.

[0009] Preferably, an annular guide rail penetrating through the rotating frame is fixedly connected to the bottom of the fixture body tabletop, and a dual-axis motor is also fixedly connected to the center of the bottom of the fixture body tabletop by embedding. One of the main shafts of the dual-axis motor located at the bottom of the fixture body tabletop is fixed to the rotating frame.

[0010] Preferably, a number of sliders are inserted into the cross rail and the longitudinal rail. The top surface of the slider is rotatably connected to a chassis. A sliding frame is arranged at the top end of the chassis, and a T-shaped column inserted into the sliding frame is fixedly installed. One end of the sliding frame is fixedly connected with a clamping block.

[0011] Preferably, the top edge of the top end of the T-shaped column and both sides of the top surface of the sliding frame are hollowed out. And an electric push rod is fixedly connected to the top end of the T-shaped column. The telescopic end of the electric push rod on the T-shaped column is fixedly connected with a plug-in part for penetrating through the hollowed-out part of the T-shaped column and the sliding frame.

[0012] Preferably, an electric push rod is also fixedly installed on the slider, and the bottom edge of the chassis is hollowed out for being inserted into the telescopic end of the electric push rod on the slider.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are as follows.

[0014] 1. In the utility model, by arranging longitudinal grooves at the cross rail and transverse grooves at the longitudinal rail, the position can be further adjusted by sliding the cross rail in the longitudinal grooves. Similarly, the position of the longitudinal rail can be further adjusted by sliding the longitudinal rail in the transverse grooves.

[0015] 2. In the present utility model, the installation position of the slider can be adjusted by bolts. When the electric push rod on the T-shaped column extends, the plug can be separated from the sliding frame, and the position of the sliding frame can be pulled, thereby adjusting the initial relative position of the clamping block and the horizontal rail or the vertical rail. In addition, when the plug penetrates through the hollow parts on the T-shaped column and the sliding frame, the electric push rod on the sliding frame contracts to separate from the chassis, and the angle of the sliding frame and the horizontal rail or the vertical rail can be adjusted by rotating the chassis, that is, the angle of the clamping block can be adjusted, which is convenient for adjusting the position of the clamping block according to the shape of the side of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic three-dimensional structure diagram of a clamping fixture for special-shaped parts proposed by the present utility model;

[0017] Figure 2 is a clamping fixture for special-shaped parts proposed by the present utility model Figure 1 schematic diagram of the upward sectional structure;

[0018] Figure 3 is a schematic structure diagram of the slider of a clamping fixture for special-shaped parts proposed by the present utility model;

[0019] Figure 4 is a schematic upward view structure diagram of the slider of the present utility model;

[0020] Figure 5 is a bottom view of the annular guide rail of the present utility model.

[0021] Legend: 1. Fixture body; 2. Vertical rail; 3. Horizontal groove; 4. Horizontal rail; 5. Vertical groove; 6. Sliding frame; 7. Connecting block; 8. Lead screw; 9. Driven bevel gear; 10. Clamping block; 11. T-shaped column; 12. Plug; 13. Electric push rod; 14. Chassis; 15. Annular guide rail; 16. Slider; 17. Rotating frame; 18. Biaxial motor; 19. Driving bevel gear; 20. Driving bevel gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0023] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0024] Such as Figures 1-5As shown in the figure, a clamping fixture for special-shaped parts includes a fixture body 1, a cross rail 4 and a longitudinal rail 2 arranged on the tabletop of the fixture body 1. A plurality of longitudinally distributed longitudinal grooves 5 are provided at the position of the cross rail 4 on the tabletop of the fixture body 1, and a plurality of parallelly distributed cross grooves 3 are provided at the position of the longitudinal rail 2. The position of the cross rail 4 can be further adjusted by sliding it in the longitudinal grooves 5. Similarly, the position of the longitudinal rail 2 can be further adjusted by sliding the longitudinal rail 2 in the cross grooves 3. Connecting blocks 7 are inserted into a plurality of cross grooves 3 and longitudinal grooves 5 on the same side of the fixture body 1. The connecting blocks 7 in the cross grooves 3 and longitudinal grooves 5 are respectively fixed to the bottom edges of the longitudinal rail 2 and the cross rail 4. And a screw rod 8 rotatably installed at the bottom of the fixture body 1 penetrates through one side of the connecting block 7 in a threaded manner. One end of the screw rod 8 facing the middle of the fixture body 1 is fixedly connected with a driven bevel gear 9. A plurality of driven bevel gears 9 are distributed in a circular array. And a rotating frame 17 is rotatably connected to the bottom of the fixture body 1. At the position of the driving bevel gear 20 at both ends of the frame body of the rotating frame 17, two symmetrically arranged driving bevel gears 19 for meshing with the driven bevel gears 9 are rotatably connected. When in use, as Figure 5 shown in the figure, when the rotating frame 17 rotates clockwise, one of the driving bevel gears 19 on both sides of the rotating frame 17 meshes with the driven bevel gears 9 at the front and rear positions, so that the driving bevel gear 19 can drive the driven bevel gear 9 to drive the screw rod 8 at the corresponding position to rotate, and the connecting block 7 meshing with the screw rod 8 can be moved. Similarly, when the rotating frame 17 rotates counterclockwise until the other driving bevel gear 19 on both sides of the rotating frame 17 meshes with the driven bevel gears 9 at the left and right positions, the driving bevel gear 19 can drive the driven bevel gear 9 to drive the screw rod 8 at the corresponding position to rotate, and the connecting block 7 meshing with the screw rod 8 can be moved. Referring to Figure 2 the figure, when the connecting blocks 7 at the front and rear positions move, the cross rail 4 can be driven to move, and when the connecting blocks 7 on the left and right move, the longitudinal rail 2 can be driven to move.

[0025] In addition: A double-shaft motor 18 is fixedly connected inside the rotating frame 17. The two main shafts of the double-shaft motor 18 respectively extend to be rotatably connected to both ends of the rotating frame 17, and driving bevel gears 20 are fixedly connected to the main shafts. The driving bevel gears 20 are located between the two driving bevel gears 19 and mesh with the opposite surfaces of the two driving bevel gears 19. A circular guide rail 15 penetrating through the rotating frame 17 is fixedly connected to the bottom of the fixture body 1, and a double-shaft motor 18 is also fixedly embedded in the center of the bottom of the fixture body 1. One of the main shafts of the double-shaft motor 18 at the bottom of the fixture body 1 is fixed to the rotating frame 17. As Figure 5As shown in the figure, the driving bevel gear 19 in this solution is a double-headed bevel gear, that is, the driving bevel gear 19 is composed of two bevel gear blocks connected end to end. One end bevel gear of the driving bevel gear 19 meshes with the driving bevel gear 20, and the bevel gear at the other end is used to mesh with the driven bevel gear 9. The annular guide rail 15 provided can limit the rotation direction of the rotating frame 17, that is, the double-shaft motor 18 at the bottom of the jig body 1 is used to drive the rotating frame 17 to rotate under the guiding action of the annular guide rail 15.

[0026] In addition: A number of sliders 16 are inserted on both the cross rail 4 and the longitudinal rail 2. The top surface of the slider 16 is rotatably connected to the chassis 14. A sliding frame 6 is provided at the top of the chassis 14, and a T-shaped column 11 inserted into the sliding frame 6 is fixedly installed. One end of the sliding frame 6 is fixedly connected to a clamping block 10. The top edge of the T-shaped column 11 and both sides of the top surface of the sliding frame 6 are provided with hollow settings. And an electric push rod 13 is fixedly connected to the top of the T-shaped column 11. The telescopic end of the electric push rod 13 on the T-shaped column 11 is fixedly connected to a plug 12 for passing through the hollow parts of the T-shaped column 11 and the sliding frame 6. An electric push rod 13 is also fixedly installed on the slider 16, and the bottom edge of the chassis 14 is provided with a hollow setting for inserting the telescopic end of the electric push rod 13 on the slider 16. During actual use, as Figure 3 shown, the slider 16 is connected to the side surface of the cross rail 4 or the longitudinal rail 2 by bolts. Therefore, it is convenient to adjust the installation position of the slider 16 through bolts. When the electric push rod 13 on the T-shaped column 11 extends, the plug 12 is separated from the sliding frame 6, and the position of the sliding frame 6 can be pulled, thereby adjusting the initial relative position between the clamping block 10 and the cross rail 4 or the longitudinal rail 2. In addition, when the plug 12 passes through the hollow parts of the T-shaped column 11 and the sliding frame 6, the electric push rod 13 on the sliding frame 6 contracts to separate from the chassis 14, and the angle between the sliding frame 6 and the cross rail 4 or the longitudinal rail 2 can be adjusted by rotating the chassis 14, that is, the angle of the clamping block 10 is adjusted, which is convenient to adjust the position of the clamping block 10 according to the shape of the side of the workpiece.

[0027] Working principle: According to the shape of the side of the workpiece, use bolts to adjust the position of the slider 16 on the cross rail 4 or the longitudinal rail 2, and then use the chassis 14 to rotate to adjust the angles of the sliding frame 6 and the clamping block 10. And use the sliding of the sliding frame 6 relative to the T-shaped column 11 to adjust the relative position of the clamping block 10 and the cross rail 4 or the longitudinal rail 2. When in use, use the dual-axis motor 18 at the bottom of the fixture body 1 to drive the rotating frame 17 to rotate, so that the rotating frame 17 rotates clockwise, so that one of the driving bevel gears 19 on both sides of the rotating frame 17 meshes with the driven bevel gears 9 at the front and rear positions, and the driving bevel gear 19 can drive the driven bevel gear 9 to drive the lead screw 8 at the corresponding position to rotate, and the connection block 7 meshed with the lead screw 8 can be moved. Similarly, when the rotating frame 17 rotates counterclockwise until the other driving bevel gear 19 on both sides of the rotating frame 17 meshes with the driven bevel gears 9 at the left and right positions, the driving bevel gear 19 can drive the driven bevel gear 9 to drive the lead screw 8 at the corresponding position to rotate, and the connection block 7 meshed with the lead screw 8 can be moved. Refer to Figure 2 , when the connection blocks 7 at the front and rear positions move, the cross rail 4 can be driven to move, and when the connection blocks 7 on the left and right move, the longitudinal rail 2 can be driven to move.

[0028] The wiring diagrams of the fixture body 1, the electric push rod 13 and the dual-axis motor 18 in the present utility model belong to the common knowledge in the art, and their working principles are already known technologies. Their models are selected according to actual use, so the control methods and wiring arrangements of the fixture body 1, the electric push rod 13 and the dual-axis motor 18 will not be explained in detail.

[0029] The above are only the preferred embodiments of the present utility model, and are not limitations on the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A clamping jig for special-shaped parts, comprising a jig body (1), a transverse rail (4) and a longitudinal rail (2) arranged on the table of the jig body (1), characterized in that: The table top of the fixture body (1) is provided with a plurality of linearly distributed longitudinal grooves (5) at the position of the transverse rail (4), and a plurality of parallelly distributed transverse grooves (3) are provided at the position of the longitudinal rail (2); A plurality of transverse grooves (3) and longitudinal grooves (5) located on the same side of the jig body (1) are plugged with connection blocks (7); the connection blocks (7) located in the transverse grooves (3) and longitudinal grooves (5) are respectively fixed to the bottom edges of the longitudinal rails (2) and the transverse rails (4); and a screw rod (8) rotatably mounted on the bottom of the jig body (1) is threadedly penetrated on one side of the connection block (7); One end of the screw rod (8) facing the middle of the jig body (1) is fixedly connected to a driven bevel gear (9), and a plurality of the driven bevel gears (9) are distributed in a ring array. The jig body (1) is rotatably connected to a rotating frame (17) at the bottom, and two ends of the rotating frame (17) are rotatably connected to the driving bevel gear (20) and are symmetrically arranged and used for meshing with the driven bevel gear (9).

2. The clamping fixture for special-shaped parts according to claim 1, characterized in that: A dual-axis motor (18) is fixedly connected inside the rotating frame (17), and two main shafts of the dual-axis motor (18) extend to be rotationally connected to two ends of the rotating frame (17) respectively, and a driving bevel gear (20) is fixedly connected to the main shaft.

3. The clamping fixture for special-shaped parts according to claim 2 is characterized in that: The driving bevel gear (20) is located between the two active bevel gears (19) and is meshedly connected with the opposite surfaces of the two active bevel gears (19).

4. The clamping fixture for special-shaped parts according to claim 1, characterized in that: The bottom of the jig body (1) is fixedly connected to a circular guide rail (15) that passes through a rotating frame (17), and a dual-axis motor (18) is also embedded and fixedly connected at the center of the bottom of the jig body (1), and one of the main shafts of the dual-axis motor (18) located at the bottom of the jig body (1) is fixed on the rotating frame (17).

5. The clamping fixture for special-shaped parts according to claim 1, characterized in that: A plurality of sliders (16) are inserted into the transverse rail (4) and the longitudinal rail (2); the top surface of the slider (16) is rotatably connected to a chassis (14); a sliding frame (6) and a T-shaped column (11) inserted into the sliding frame (6) are fixedly installed at the top of the chassis (14); and a clamping block (10) is fixedly connected to one end of the sliding frame (6).

6. The clamping fixture for special-shaped parts according to claim 5, characterized in that: The top edge of the T-shaped column (11) and both sides of the top surface of the sliding frame (6) are hollowed out, and the top of the T-shaped column (11) is fixedly connected to an electric push rod (13), and the telescopic end of the electric push rod (13) on the T-shaped column (11) is fixedly connected to a plug-in (12) for penetrating the hollow part of the T-shaped column (11) and the sliding frame (6).

7. The clamping fixture for special-shaped parts according to claim 5, characterized in that: The slider (16) is also fixedly mounted with an electric push rod (13), and the bottom edge of the chassis (14) is a hollow setting for plugging into the telescopic end of the electric push rod (13) on the slider (16).

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