Workpiece fixing clamp facilitating angle adjustment

Abstract

The invention discloses a workpiece fixing clamp facilitating angle adjustment, and relates to the technical field of clamps. The wire harness problem is solved. The clamping device specifically comprises a base and a fixing frame fixed to the outer wall of the top of the base through bolts, a multi-angle adjusting component is arranged at the top of the fixing frame, two sets of clamping assemblies which are oppositely arranged and used for clamping and fixing a workpiece are fixed to the moving tail end of the multi-angle adjusting component, and the multi-angle adjusting component comprises a first rotating seat and a second rotating seat. Through the arrangement of the first rotating seat, the second rotating seat and other components, the angle of a workpiece can be adjusted at multiple angles, meanwhile, rotation driving structures of the first rotating seat and the second rotating seat are designed, and angle adjustment of the first rotating seat and the second rotating seat can be achieved only by utilizing whether rotation of the threaded sleeve and the hollow shaft is synchronous or not; and the screw sleeve and the hollow shaft are coaxially arranged, so that the follow-up problem of the power source is avoided, and the problems of abrasion, winding, breakage and the like of a power source wire are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and particularly to a workpiece fixing jig that is convenient for adjusting the angle. Background Art

[0002] In the field of numerical control machining, jigs are essential components, which play a role in clamping, fixing, and positioning workpieces. And for multi-angle requirements, the jig also needs to be able to adjust the angle of the workpiece to cooperate with the machining head to achieve the machining purpose of multiple positions or multiple angles.

[0003] In the prior art, for example, a patent with the Chinese patent publication number CN119036133B discloses a machining jig for multi-angle clamping, which mainly includes support components such as a brake support, a clamping adjustment support, and a clamping control seat, as well as drive sources such as a clamping telescopic rod and a clamping drive member. It uses different drives of each drive source to realize the rotation of each seat to achieve the multi-angle adjustment function.

[0004] The above patent has the following deficiencies: With the arrangement of multiple power sources and the realization of multi-angle adjustment, each power source will move as its fixed seat moves (for example, when the angles of each seat are adjusted, the clamping telescopic rod will also move correspondingly). However, the power source needs to be connected with wires for power supply, which makes the wires also move. Although there are drag chains in the prior art to protect the wires, the drag chain structure is for guiding and protecting linear motion, while the angle adjustment of the jig is rotational motion. Therefore, there are risks such as wire movement wear, entanglement, and breakage.

[0005] Therefore, the present invention proposes a workpiece fixing jig that is convenient for adjusting the angle. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a workpiece fixing jig that is convenient for adjusting the angle.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: A workpiece fixing jig that is convenient for adjusting the angle includes a base and a fixing frame fixed to the outer wall of the top of the base by bolts. A multi-angle adjustment member is arranged at the top of the fixing frame, and two sets of opposed clamping components for clamping and fixing the workpiece are fixed at the moving end of the multi-angle adjustment member; The multi-angle adjustment member includes a first rotating seat and a second rotating seat. The first rotating seat is rotationally connected to the inner wall of the fixed frame through a hollow shaft. The second rotating seat is rotationally connected to the top of the first rotating seat, and the axis of rotation of the first rotating seat relative to the fixed frame is not parallel to the axis of rotation of the second rotating seat relative to the first rotating seat. A screw sleeve is rotationally connected to the inner wall of the hollow shaft. A screw rod is threadedly connected to the inner wall of the screw sleeve. The top of the screw rod is rotationally connected to a connecting rod, and the other end of the connecting rod is rotationally connected to the bottom outer wall of the second rotating seat.

[0008] Preferably: A second driven gear is fixed to the outer wall of the hollow shaft, and a first driven gear is fixed to the outer wall of the screw sleeve. A self-locking motor is fixed to the bottom outer wall of the fixed frame by bolts. The output shaft of the self-locking motor is fixedly connected to an "I"-shaped shaft. An active gear is in transmission cooperation with the outer wall of the "I"-shaped shaft and can only slide axially. The active gear meshes with the outer wall of the first driven gear and / or the second driven gear.

[0009] Further: The thickness of the active gear is greater than the thicknesses of the first driven gear and the second driven gear, and the thickness of the active gear is less than the sum of the thickness of the second driven gear and the axial clearance between the second driven gear and the first driven gear. The thickness of the active gear is less than the sum of the thickness of the first driven gear and the axial clearance between the first driven gear and the second driven gear.

[0010] Based on the foregoing solution: A permanent magnet is fixed to the bottom outer wall of the active gear, and an electromagnet cooperating with the permanent magnet is fixed to the upper surface of the bottom of the fixed frame.

[0011] A better solution in the foregoing solution is: A keyway is provided on the outer wall of the "I"-shaped shaft, and a flat key protrusion in clearance fit with the keyway is fixed to the inner wall of the active gear. Two limit heads are symmetrically and slidably connected to the inner wall of the "I"-shaped shaft in a direction perpendicular to the axis. A first spring is provided on the opposite sides of the two limit heads.

[0012] As a further solution of the present invention: A second limit groove for limit cooperation with the limit head is provided on the inner wall of the flat key protrusion.

[0013] At the same time, when the limit head cooperates with the second limit groove, the active gear meshes with the first driven gear and the second driven gear simultaneously.

[0014] As a preferred solution of the present invention: The clamping assembly includes a cavity housing fixed to the top outer wall of the second rotating seat, a second piston slidably connected to the inner wall of the cavity housing, and a rear cover fixed to the back of the cavity housing by bolts. A plurality of first pistons arranged in a rectangular array are slidably connected to one side of the cavity housing away from the rear cover. Fingers for contacting and clamping the workpiece are fixed to the outer wall of the first piston. A clamping bolt is threadedly connected to the inner wall of the rear cover. One end of the clamping bolt is rotationally connected to the second piston, and a handle assembly is provided at the other end of the clamping bolt.

[0015] Meanwhile, the inner cavity of the cavity housing located between the first piston and the second piston is filled with an incompressible liquid.

[0016] As a better solution of the present invention: The handle assembly includes a rotary handle rotatably connected to the end of the clamping bolt and an adjusting bolt threadedly connected to the radial direction of the rotary handle. The end of the adjusting bolt is in contact and cooperation with a second spring, and the other end of the second spring is in contact and cooperation with a second limiting head slidably connected to the inner wall of the radial direction of the rotary handle. A plurality of first limiting grooves cooperating with the second limiting head are formed on the outer wall of the clamping bolt.

[0017] The beneficial effects of the present invention are as follows: 1. In the present invention, by providing components such as the first rotating seat and the second rotating seat, while being able to adjust the angle of the workpiece at multiple angles, through the design of the rotation driving structure of the first rotating seat and the second rotating seat, the angle adjustment of the two can be achieved only by using whether the rotation of the screw sleeve and the hollow shaft is synchronous. And because the screw sleeve and the hollow shaft are coaxially arranged, there will be no problem of the follow-up of the power source, thus solving problems such as wear, winding, and fracture of the power source wire.

[0018] 2. In the present invention, by providing a "clutch-type" driving structure, which is composed of key components such as a self-locking motor, a driving gear, a screw sleeve, and a hollow shaft, the separate or synchronous driving of the screw sleeve and the hollow shaft can be realized by using the axial movement of the driving gear, thus saving the arrangement of the number of self-locking motors and facilitating the structural optimization.

[0019] 3. In the present invention, by providing a plurality of clamping fingers arranged in a rectangular array, on the one hand, it can achieve multi-point clamping, reduce the single-point clamping force, and prevent the workpiece from deforming. On the other hand, because the liquid has fluidity, it can ensure that the clamping force at each clamping point is equal and can also fit the clamping of workpieces with irregular shapes.

[0020] 4. In the present invention, by providing a handle assembly, the elastic resistance between the second limiting head and the first limiting groove is provided by the second spring, so that after stable clamping, when a rotational torque is continuously applied, the transmission between the clamping bolt and the rotary handle can be disconnected by using the separation of the second limiting head and the first limiting groove, thus preventing the workpiece from being clamped and damaged and increasing the clamping reliability. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a workpiece fixing fixture for facilitating angle adjustment proposed by the present invention; Figure 2 It is a schematic diagram of the multi-angle adjustment component structure of a workpiece fixing fixture for facilitating angle adjustment proposed by the present invention; Figure 3 It is a schematic cross-sectional view of the multi-angle adjustment component of a workpiece fixing fixture for facilitating angle adjustment proposed by the present invention; Figure 4 Schematic structural diagram of the driving part of the screw sleeve and the hollow shaft of a workpiece fixing fixture with adjustable angle proposed by the present invention; Figure 5 Schematic cross-sectional structural diagram of the driving part of the screw sleeve and the hollow shaft of a workpiece fixing fixture with adjustable angle proposed by the present invention; Figure 6 A workpiece fixing fixture with adjustable angle proposed by the present invention Figure 5 Enlarged structural diagram of part A in; Figure 7 Schematic structural diagram of the clamping assembly of a workpiece fixing fixture with adjustable angle proposed by the present invention; Figure 8 Schematic cross-sectional structural diagram of the handle assembly of a workpiece fixing fixture with adjustable angle proposed by the present invention.

[0022] In the figure: 1, base; 2, fixing frame; 3, multi-angle adjusting member; 4, clamping assembly; 5, first rotating seat; 6, second rotating seat; 7, screw rod; 8, connecting rod; 9, screw sleeve; 10, hollow shaft; 11, first driven gear; 12, electromagnet; 13, "I"-shaped shaft; 14, permanent magnet; 15, driving gear; 16, second driven gear; 17, self-locking motor; 18, flat key protrusion; 19, keyway; 20, first limiting head; 21, first spring; 22, clamping finger; 23, first piston; 24, cavity housing; 25, second piston; 26, rear cover; 27, handle assembly; 28, clamping bolt; 29, rotating handle; 30, adjusting bolt; 31, second spring; 32, second limiting head; 33, first limiting groove; 34, second limiting groove. Specific embodiments

[0023] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0025] Embodiment: A workpiece fixing fixture with adjustable angle, as Figures 1-8 shown, includes a base 1 and a fixing frame 2 fixed to the outer wall of the top of the base 1 by bolts. A multi-angle adjusting member 3 is provided at the top of the fixing frame 2, and two sets of opposed clamping assemblies 4 for clamping and fixing the workpiece are fixed to the moving ends of the multi-angle adjusting member 3.

[0026] The multi-angle adjustment member 3 includes a first rotating seat 5 and a second rotating seat 6. The first rotating seat 5 is rotationally connected to the inner wall of the fixed frame 2 through a hollow shaft 10. The second rotating seat 6 is rotationally connected to the top of the first rotating seat 5, and the rotation axis of the first rotating seat 5 relative to the fixed frame 2 is not parallel to the rotation axis of the second rotating seat 6 relative to the first rotating seat 5. Preferably, the rotation axis of the first rotating seat 5 relative to the fixed frame 2 is perpendicular to the rotation axis of the second rotating seat 6 relative to the first rotating seat 5. A screw sleeve 9 is rotationally connected to the inner wall of the hollow shaft 10. A screw rod 7 is threadedly connected to the inner wall of the screw sleeve 9. The top of the screw rod 7 is rotationally connected to a connecting rod 8, and the other end of the connecting rod 8 is rotationally connected to the bottom outer wall of the second rotating seat 6.

[0027] When the device is in use, the workpiece can be clamped and fixed by the clamping assembly 4. When the screw sleeve 9 and the hollow shaft 10 rotate synchronously, at this time, there is no relative rotational movement between the screw rod 7 and the screw sleeve 9, and the first rotating seat 5 and the second rotating seat 6 rotate as a whole. When the screw sleeve 9 and the hollow shaft 10 do not rotate synchronously, at this time, there is a relative rotational movement between the screw sleeve 9 and the screw rod 7, so that the screw rod 7 moves longitudinally by the action of the thread, and then the second rotating seat 6 is driven to rotate relative to the first rotating seat 5 through the connecting rod 8.

[0028] In this device, by setting components such as the first rotating seat 5 and the second rotating seat 6, while being able to adjust the angle of the workpiece at multiple angles, through the design of the rotation drive structure of the first rotating seat 5 and the second rotating seat 6, only by using whether the rotation of the screw sleeve 9 and the hollow shaft 10 is synchronous can the angle adjustment of the two be realized. And because the screw sleeve 9 and the hollow shaft 10 are coaxially arranged, there will be no problem of the follow-up of the power source, thus solving problems such as wear, entanglement, and breakage of the power source wire.

[0029] To solve the driving problem; as Figure 4 shown, a second driven gear 16 is fixed to the outer wall of the hollow shaft 10, and a first driven gear 11 is fixed to the outer wall of the screw sleeve 9. A self-locking motor 17 is fixed to the bottom outer wall of the fixed frame 2 by bolts. The output shaft of the self-locking motor 17 is fixedly connected to a "worker"-shaped shaft 13. The outer wall of the "worker"-shaped shaft 13 is only axially slidably in transmission cooperation with a driving gear 15. The driving gear 15 meshes with the outer wall of the first driven gear 11 and / or the second driven gear 16.

[0030] The thickness of the driving gear 15 is greater than the thicknesses of the first driven gear 11 and the second driven gear 16, and the thickness of the driving gear 15 is less than the sum of the thickness of the second driven gear 16 and the axial clearance between the second driven gear 16 and the first driven gear 11. The thickness of the driving gear 15 is less than the sum of the thickness of the first driven gear 11 and the axial clearance between the first driven gear 11 and the second driven gear 16.

[0031] A permanent magnet 14 is fixed to the outer wall of the bottom of the driving gear 15, and an electromagnet 12 that cooperates with the permanent magnet 14 is fixed to the upper surface of the bottom of the fixing frame 2.

[0032] A keyway 19 is formed in the outer wall of the "I"-shaped shaft 13, and a flat key projection 18 that is in clearance fit with the keyway 19 is fixed to the inner wall of the driving gear 15. Two limiting heads 20 are symmetrically and slidably connected to the inner wall of the "I"-shaped shaft 13 in the direction perpendicular to the axis. A same first spring 21 is arranged on the opposite sides of the two limiting heads 20.

[0033] A second limiting groove 34 that is in limiting fit with the limiting head 20 is formed in the inner wall of the flat key projection 18. When the limiting head 20 is in fit with the second limiting groove 34, the driving gear 15 is simultaneously engaged with the first driven gear 11 and the second driven gear 16.

[0034] When the self-locking motor 17 is started, it can drive the "I"-shaped shaft 13 to rotate, and thus drive the driving gear 15 to rotate through the cooperation between the flat key projection 18 and the keyway 19. When the driving gear 15 is simultaneously engaged with the first driven gear 11 and the second driven gear 16, it drives the first driven gear 11 and the second driven gear 16 to rotate synchronously, and the screw sleeve 9 and the hollow shaft 10 rotate synchronously. When the driving gear 15 is engaged with the first driven gear 11 or the second driven gear 16, it separately drives the first driven gear 11 or the screw sleeve 9 to rotate. And there is a rotational damping at the rotational connection between the hollow shaft 10 and the fixing frame 2, and the rotational damping force is greater than the resistance when the screw sleeve 9 rotates to adjust the angle of the second rotating seat 6 relative to the screw rod 7.

[0035] When the electromagnet 12 is energized to generate a magnetic field that repels the permanent magnet 14 and the repulsive force is relatively large, it can push the driving gear 15 upward to fit against the upper shoulder of the "I"-shaped shaft 13. At this time, the driving gear 15 is only engaged with the second driven gear 16. When the electromagnet 12 is energized to generate a magnetic field that attracts the permanent magnet 14 and the attractive force is relatively large, the driving gear 15 moves downward to fit against the lower shoulder of the "I"-shaped shaft 13. At this time, the driving gear 15 is only engaged with the first driven gear 11. When the driving gear 15 is in the upper position or the driving gear 15 is in the lower position, the electromagnet 12 is energized to generate a magnetic field that attracts or repels the permanent magnet 14, and at this time the magnetic force is moderate. When the driving gear 15 moves downward or upward, there will be a cooperation state between the limiting head 20 and the second limiting groove 34. At this time, the cooperation between the limiting head 20 and the second limiting groove 34 will cause the driving gear 15 to stop. At this time, the driving gear 15 is simultaneously engaged with the first driven gear 11 and the second driven gear 16.

[0036] Assume that the axial sliding resistance when the driving gear 15 is engaged with the first driven gear 11 and the second driven gear 16 is F1, and the resistance of the cooperation between the limiting head 20 and the second limiting groove 34 to the axial sliding of the driving gear 15 is F2. Then in the above situations: The magnetic force F needs to satisfy F > 2F1 + F2 for a larger magnetic force, and for a moderate magnetic force, it only needs to satisfy F1 < F < F1 + F2.

[0037] In this device, by setting a "clutch-type" driving structure, which consists of key components such as a self-locking motor 17, a driving gear 15, a screw sleeve 9, and a hollow shaft 10, the separate or synchronous driving of the screw sleeve 9 and the hollow shaft 10 can be achieved by the axial movement of the driving gear 15, thus saving the arrangement of the number of self-locking motors 17 and facilitating structural optimization.

[0038] When this embodiment is in use, the workpiece can be clamped and fixed by the clamping assembly 4. When the screw sleeve 9 and the hollow shaft 10 rotate synchronously, there is no relative rotational movement between the screw rod 7 and the screw sleeve 9 at this time, and the first rotating seat 5 and the second rotating seat 6 rotate as a whole. When the screw sleeve 9 and the hollow shaft 10 rotate non-synchronously, there is a relative rotational movement between the screw sleeve 9 and the screw rod 7 at this time, so that the screw rod 7 moves longitudinally by the action of the thread, and then drives the second rotating seat 6 to rotate relative to the first rotating seat 5 through the connecting rod 8. Specifically, when the self-locking motor 17 starts, it can drive the "I"-shaped shaft 13 to rotate, and then drive the driving gear 15 to rotate through the cooperation of the flat key protrusion 18 and the key groove 19. When the driving gear 15 meshes with both the first driven gear 11 and the second driven gear 16 at the same time, it drives the first driven gear 11 and the second driven gear 16 to rotate synchronously, and the screw sleeve 9 and the hollow shaft 10 rotate synchronously. When the driving gear 15 meshes with the first driven gear 11 or the second driven gear 16, it drives the first driven gear 11 or the screw sleeve 9 to rotate alone, and there is a rotational damping at the rotational connection between the hollow shaft 10 and the fixed frame 2, and the rotational damping force is greater than the resistance when the screw sleeve 9 rotates relative to the screw rod 7 to adjust the angle of the second rotating seat 6. More specifically, when the electromagnet 12 is energized to generate a magnetic field repulsive to the permanent magnet 14 and the repulsive force is large, it can push the driving gear 15 upward to fit the upper shoulder of the "I"-shaped shaft 13. At this time, the driving gear 15 only meshes with the second driven gear 16. When the electromagnet 12 is energized to generate a magnetic field attractive to the permanent magnet 14 and the attractive force is large, the driving gear 15 moves downward to fit the lower shoulder of the "I"-shaped shaft 13. At this time, the driving gear 15 only meshes with the first driven gear 11. When the driving gear 15 is in the upper position or the driving gear 15 is in the lower position, the electromagnet 12 is energized to generate a magnetic field attractive or repulsive to the permanent magnet 14, and at this time the magnetic force is moderate. When the driving gear 15 moves downward or upward, there will be a cooperation state between the limiting head 20 and the second limiting groove 34. At this time, the cooperation between the limiting head 20 and the second limiting groove 34 will cause the driving gear 15 to stop, and at this time the driving gear 15 meshes with both the first driven gear 11 and the second driven gear 16 at the same time. Embodiment 2

[0039] A workpiece fixing fixture convenient for adjusting the angle, such as Figures 1-8As shown in the figure, to solve the clamping problem, the following improvements are made on the basis of Embodiment 1: The clamping assembly 4 includes a cavity housing 24 fixed to the outer wall of the top of the second rotating base 6, a second piston 25 slidably connected to the inner wall of the cavity housing 24, and a rear cover 26 fixed to the back of the cavity housing 24 by bolts. A plurality of first pistons 23 arranged in a rectangular array are slidably connected to one side of the cavity housing 24 away from the rear cover 26. The outer wall of the first piston 23 is fixed with a finger 22 for contacting and clamping the workpiece. The inner cavity of the cavity housing 24 between the first piston 23 and the second piston 25 is filled with an incompressible liquid. The inner wall of the rear cover 26 is threadedly connected with a clamping bolt 28. One end of the clamping bolt 28 is rotatably connected to the second piston 25, and the other end of the clamping bolt 28 is provided with a handle assembly 27.

[0040] When the clamping bolt 28 is rotated through the handle assembly 27, the threaded connection between the clamping bolt 28 and the rear cover 26 causes the clamping bolt 28 to drive the second piston 25 to move. Thus, pressure is applied through the liquid in the inner cavity of the cavity housing 24 to make the fingers 22 extend, and the workpiece is clamped and fixed by a plurality of fingers 22.

[0041] In this device, by arranging a plurality of fingers 22 in a rectangular array, on the one hand, multi-point clamping can be achieved, reducing the single-point clamping force and preventing the workpiece from deforming. On the other hand, due to the fluidity of the liquid, it can ensure that the clamping force at each clamping point is equal and can also fit the clamping of workpieces with irregular shapes.

[0042] The handle assembly 27 includes a rotating handle 29 rotatably connected to the end of the clamping bolt 28 and an adjusting bolt 30 threadedly connected to the radial direction of the rotating handle 29. The end of the adjusting bolt 30 is in contact and cooperation with a second spring 31. The other end of the second spring 31 is in contact and cooperation with a second limiting head 32 slidably connected to the inner wall of the radial direction of the rotating handle 29. A plurality of first limiting grooves 33 for cooperating with the second limiting head 32 are formed on the outer wall of the clamping bolt 28.

[0043] When the rotating handle 29 rotates, the cooperation between the second limiting head 32 and the first limiting groove 33 will transmit torque, thereby driving the clamping bolt 28 to rotate. And when the limiting head 20 stably clamps the workpiece, if the rotating handle 29 continues to rotate at this time, the torque transmission between the rotating handle 29 and the clamping bolt 28 is greater than the elastic limiting force between the second limiting head 32 and the first limiting groove 33, and the second limiting head 32 and the first limiting groove 33 are disengaged, and the rotating handle 29 rotates relative to the clamping bolt 28.

[0044] In this device, by setting the handle assembly 27 and using the second spring 31 to provide the elastic resistance between the second limiting head 32 and the first limiting groove 33, it is possible to disconnect the transmission between the clamping bolt 28 and the rotating handle 29 by separating the second limiting head 32 from the first limiting groove 33 when a rotational torque is continuously applied after stable clamping, thereby preventing the workpiece from being scratched and increasing the clamping reliability.

[0045] In the use of this embodiment, when the rotating handle 29 rotates, the cooperation between the second limiting head 32 and the first limiting groove 33 will transmit torque, thereby driving the clamping bolt 28 to rotate. The threaded connection between the clamping bolt 28 and the rear cover 26 will cause the clamping bolt 28 to drive the second piston 25 to move, so that the fingers 22 are extended by applying pressure through the liquid in the inner cavity of the cavity housing 24, and the workpiece is clamped and fixed by the multiple fingers 22. And when the limiting head 20 stably clamps the workpiece, if the rotating handle 29 is rotated continuously at this time, the torque transmission between the rotating handle 29 and the clamping bolt 28 is greater than the elastic limiting force between the second limiting head 32 and the first limiting groove 33, the second limiting head 32 is separated from the first limiting groove 33, and the rotating handle 29 rotates relative to the clamping bolt 28.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A workpiece fixing fixture convenient for angle adjustment, comprising a base (1) and a fixing frame (2) bolted to the outer wall of the top of the base (1), characterized in that a multi-angle adjustment member (3) is provided at the top of the fixing frame (2), and two sets of opposed clamping assemblies (4) for clamping and fixing the workpiece are fixed at the moving end of the multi-angle adjustment member (3); the multi-angle adjustment member (3) includes a first rotating seat (5) and a second rotating seat (6). The first rotating seat (5) is rotatably connected to the inner wall of the fixing frame (2) through a hollow shaft (10). The second rotating seat (6) is rotatably connected to the top of the first rotating seat (5), and the axis of rotation of the first rotating seat (5) relative to the fixing frame (2) is not parallel to the axis of rotation of the second rotating seat (6) relative to the first rotating seat (5). A screw sleeve (9) is rotatably connected to the inner wall of the hollow shaft (10). A screw rod (7) is threadedly connected to the inner wall of the screw sleeve (9). The top of the screw rod (7) is rotatably connected to a connecting rod (8). The other end of the connecting rod (8) is rotatably connected to the outer wall of the bottom of the second rotating seat (6).

2. The workpiece fixing fixture capable of adjusting the angle according to claim 1, characterized in that, A second driven gear (16) is fixed to the outer wall of the hollow shaft (10), and a first driven gear (11) is fixed to the outer wall of the screw sleeve (9). A self-locking motor (17) is bolted to the outer wall of the bottom of the fixing frame (2). The output shaft of the self-locking motor (17) is fixedly connected to an "I"-shaped shaft (13). A driving gear (15) is in transmission cooperation with the outer wall of the "I"-shaped shaft (13) in a manner that it can only slide axially. The driving gear (15) meshes with the outer walls of the first driven gear (11) and / or the second driven gear (16).

3. The workpiece fixing fixture capable of facilitating angle adjustment according to claim 2, wherein, The thickness of the driving gear (15) is greater than the thicknesses of the first driven gear (11) and the second driven gear (16), and the thickness of the driving gear (15) is less than the sum of the thickness of the second driven gear (16) and the axial clearance between the second driven gear (16) and the first driven gear (11). The thickness of the driving gear (15) is less than the sum of the thickness of the first driven gear (11) and the axial clearance between the first driven gear (11) and the second driven gear (16).

4. The workpiece fixing jig for facilitating angle adjustment according to claim 2, wherein A permanent magnet (14) is fixed to the outer wall of the bottom of the driving gear (15), and an electromagnet (12) cooperating with the permanent magnet (14) is fixed to the upper surface of the bottom of the fixing frame (2).

5. The workpiece fixing jig capable of conveniently adjusting the angle according to claim 2, characterized in that, A keyway (19) is formed in the outer wall of the "I"-shaped shaft (13). A flat key projection (18) in clearance fit with the keyway (19) is fixed to the inner wall of the driving gear (15). Two limiting heads (20) are symmetrically and slidably connected to the inner wall of the "I"-shaped shaft (13) in a direction perpendicular to the axis. A first spring (21) is provided on the opposite sides of the two limiting heads (20).

6. The workpiece fixing jig for facilitating angle adjustment according to claim 5, characterized in that, A second limiting groove (34) for limiting cooperation with the limiting head (20) is formed in the inner wall of the flat key projection (18).

7. The workpiece fixing jig for facilitating angle adjustment according to claim 6, wherein, When the limiting head (20) cooperates with the second limiting groove (34), the driving gear (15) meshes with both the first driven gear (11) and the second driven gear (16) simultaneously.

8. A workpiece fixing fixture for facilitating angle adjustment according to claim 1, characterized in that, The clamping assembly (4) includes a cavity housing (24) fixed to the outer wall of the top of the second rotating base (6), a second piston (25) slidably connected to the inner wall of the cavity housing (24), and a rear cover (26) fixed to the back of the cavity housing (24) by bolts. A plurality of first pistons (23) arranged in a rectangular array are slidably connected to one side of the cavity housing (24) away from the rear cover (26). A finger (22) for contacting and clamping the workpiece is fixed to the outer wall of the first piston (23). A clamping bolt (28) is threadedly connected to the inner wall of the rear cover (26). One end of the clamping bolt (28) is rotatably connected to the second piston (25), and a handle assembly (27) is arranged at the other end of the clamping bolt (28).

9. The workpiece fixing jig for facilitating angle adjustment according to claim 8, wherein, An incompressible liquid is filled in the inner cavity of the cavity housing (24) between the first piston (23) and the second piston (25).

10. The workpiece fixing jig for facilitating angle adjustment according to claim 8, wherein The handle assembly (27) includes a rotary handle (29) rotatably connected to the end of the clamping bolt (28) and an adjusting bolt (30) threadedly connected to the radial direction of the rotary handle (29). The end of the adjusting bolt (30) is in contact and cooperation with a second spring (31). The other end of the second spring (31) is in contact and cooperation with a second limiting head (32) slidably connected to the inner wall of the radial direction of the rotary handle (29). A plurality of first limiting grooves (33) for cooperating with the second limiting head (32) are formed in the outer wall of the clamping bolt (28).

Images