Hydraulic finger clamping device

Abstract

The utility model discloses a hydraulic finger-type clamping device, which relates to the technical field of clamping devices, including a transition plate, a machine tool pull rod and a pull plate are arranged at both ends of the transition plate, a fixture body and a rear plate are connected by an extended screw on one side of the transition plate, a positioning plate is arranged on one side of the fixture body, a left stopper is arranged between the fixture body and the rear plate, a screw is arranged on one side of the left stopper, a corner pressing plate is arranged at one end of the screw, a steering rivet is arranged on the pull plate, and the steering rivet is stuck between the left stopper and the screw, which is used to drive the screw to move left and right, a steel ball is arranged at the inner end of the fixture body through a slotted flat-end screw, a spiral groove is arranged on the screw and cooperates with the steel ball to form a spiral pair. The hydraulic finger-type clamping device achieves the purpose of clamping and loosening the workpiece, avoids manual operation, realizes automatic clamping, and improves clamping efficiency; the clamping force is controlled by the machine tool hydraulic cylinder, which avoids the subjectivity of manual operation and ensures product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a hydraulic finger-type clamping device. Background Art

[0002] Figure 7-Figure 8 This is a simplified assembly diagram of the fixture system of the prior art solution, the main structures are: 19. chuck; 20. claw; 21. fixture base; 22. workpiece; 23. pressure plate pillar; 24. pressure plate; 25. clamping screw; working principle: the claw 20 clamps the fixture base 21 through the clamping force provided by the chuck 19 (provided by the machine tool), the pressure plate 24 can rotate around the pressure plate pillar 23, and when it turns to a position that does not interfere with the placement of the workpiece, the workpiece 22 is placed on the positioning surface of the fixture base, the pressure plate 24 is rotated to the clamping surface, and the clamping screw 25 is tightened manually with a wrench to clamp the workpiece 22, and the chuck 19 drives the entire fixture system to rotate, and the processing of parts begins;

[0003] However, during the use of the device, there are many manual operation steps, which is time-consuming; the clamping force is difficult to control and is greatly affected by the operator's subjective operating factors, resulting in unstable product quality. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a hydraulic finger-type pressing device, which solves the technical problems mentioned in the background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: a hydraulic finger-type clamping device, including a transition plate, machine tool pull rods and pull plates are arranged at both ends of the transition plate, and the machine tool pull rod and the pull plate are connected by pull pins, one side of the transition plate is connected with a fixture body and a rear plate by an extended screw, one side of the fixture body is provided with a positioning plate, and the workpiece is positioned by the positioning plate, a left stopper is arranged between the fixture body and the rear plate, a screw is arranged on one side of the left stopper, a corner pressure plate is arranged at one end of the screw, a steering pull pin is arranged on the pull plate, and the steering pull pin is stuck between the left stopper and the screw for driving the screw to move left and right, a steel ball is arranged at the inner end of the fixture body through a slotted flat-end screw, a spiral groove is arranged on the screw and cooperates with the steel ball to form a spiral pair.

[0006] As a further preferred embodiment of the present technical solution, the transition plate is connected to the nose end of the machine tool spindle, and the power provided by the machine tool drives the entire system to rotate.

[0007] As a further preferred embodiment of the present technical solution, a locking nut is provided on the pull disc, and the locking nut is used to lock the connection between the pull disc and the pull pin.

[0008] As a further preferred embodiment of the present technical solution, the positioning plate is fixed to the fixture body by screws to provide positioning for the workpiece.

[0009] As a further preferred embodiment of the present technical solution, the corner pressure plate is connected to the screw rod through a connecting pin and is used to be fixed on the screw rod to apply pressure.

[0010] As a further preferred embodiment of the present technical solution, the left stopper cooperates with the steering rivet, and the screw rod cooperates with the steering rivet and the connecting pin to achieve left and right movement.

[0011] Compared with the prior art, it has the following beneficial effects:

[0012] The power provided by the machine tool hydraulic cylinder through the machine tool pull rod can move left and right, thereby driving the pull plate to move left and right, and the steering pull pin installed on the pull plate drives the screw to move, and the spiral groove on the steel ball and the screw forms a spiral pair. Under the action of this mechanism, the screw rotates while moving, thereby achieving the purpose of clamping and loosening the workpiece, avoiding manual operation, realizing automatic clamping, and improving clamping efficiency; the clamping force is controlled by the machine tool hydraulic cylinder, which avoids the subjectivity of human operation and ensures product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the clamp body of the utility model;

[0014] Figure 2 It is a schematic diagram of actions 1, 2, 3, 4, and 5 in the hydraulic finger-type pressing device of the utility model;

[0015] Figure 3 It is a schematic diagram of action 10 in the hydraulic finger-type pressing device of the utility model;

[0016] Figure 4 It is a schematic diagram of actions 6, 7, 8, 9, 10, and 11 in the hydraulic finger-type pressing device of the utility model;

[0017] Figure 5 It is a schematic diagram of action 16 in the hydraulic finger-type pressing device of the utility model;

[0018] Figure 6 It is a schematic diagram of actions 12, 13, 14, 15, and 16 in the hydraulic finger-type pressing device of the utility model;

[0019] Figure 7 It is a schematic assembly diagram of the fixture system of the prior art solution;

[0020] Figure 8 for Figure 7 Cross-sectional view along the AA direction.

[0021] In the figure: 1. transition plate; 2. machine tool pull rod; 3. pull rivet; 4. pull plate; 5. locking nut; 6. fixture body; 7. rear plate; 8. extension screw; 9. positioning plate; 10. screw; 11. left stopper; 12. screw rod; 13. steering pull rivet; 14. steel ball; 15. slotted flat end screw; 16. corner pressure plate; 17. connecting pin; 18. workpiece. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1: Combination Figure 1-Figure 6 As shown, the utility model provides a technical solution: a hydraulic finger-type clamping device includes a transition plate 1, which is connected to the nose end of the machine tool spindle and drives the entire system to rotate through the power provided by the machine tool. Machine tool pull rods 2 and pull plates 4 are arranged at both ends of the transition plate 1, and the machine tool pull rods 2 and pull plates 4 are connected by pull nails 3. The machine tool pull rods 2 are connected with the pull nails 3 to transmit the machine tool power to the pull plate 4. A locking nut 5 is arranged on the pull plate 4. The locking nut 5 is used to lock the connection between the pull plate 4 and the pull nail 3 to realize the locking function of the system and ensure the stable rotation of the system; a fixture body 6 and a rear plate 7 are connected on one side of the transition plate 1 through an extended screw 8 to form the main structure of the fixture, and the extended screw 8 is used to connect the rear plate 7 and the fixture body 6 and fix them to the transition plate 1, and a positioning plate 9 is arranged on one side of the fixture body 6, and the workpiece 18 is positioned by the positioning plate 9. The positioning plate 9 is fixed to the fixture body 6 by screws 10, and is used to provide positioning for the workpiece 18. A left stopper 11 is provided between the fixture body 6 and the rear plate 7. A screw 12 is provided on one side of the left stopper 11. A corner pressure plate 16 is provided at the other end of the screw 12 through a connecting pin 17. The corner pressure plate 16 is connected to the screw 12 through a connecting pin 17, and is used to be fixed on the screw 12 to apply pressure. A steering rivet 13 is provided on the pull plate 4, and the steering rivet 13 is stuck between the left stopper 11 and the screw 12, and is used to drive the screw 12 to move left and right. The left stopper 11 cooperates with the steering rivet 13 to limit the movement range of the screw 12. The screw 12 cooperates with the steering rivet 13 and the connecting pin 17 to achieve left and right movement. A steel ball 14 is connected to the inner end of the fixture body 6 through a slotted flat-end screw 15. A spiral groove is provided on the screw 12 and cooperates with the steel ball 14 to form a spiral pair.

[0024] Working principle of hydraulic finger clamping device: the machine tool pull rod 2 can move left and right (action 1) by the power provided by the machine tool hydraulic cylinder, thereby driving the pull plate 4 to move left and right (action 2), and the steering pull nail 13 installed on the pull plate 4 drives the screw 12 to move (action 3), and the steel ball 14 and the spiral groove on the screw 12 form a spiral pair. Under the action of this mechanism, the screw 12 rotates while moving, thereby achieving the purpose of clamping and loosening the workpiece, avoiding manual operation, realizing automatic clamping, and improving clamping efficiency; the clamping force is controlled by the machine tool hydraulic cylinder, avoiding the subjectivity of human operation and ensuring product quality;

[0025] The specific steps are as follows: Figure 3 , Figure 4 , the machine tool pull rod 2 moves to the right (action 6) and drives the pull plate 4 to move to the right (action 7), and the steering pin 13 on the pull plate 4 drives the screw 12 to move to the right (action 8). Under the action of the spiral pair, the screw 12 rotates in the direction shown in the figure, thereby realizing (action 9) and (action 10) at the same time. After the corner pressing plate 16 rotates to a fixed angle to leave enough space for the upper and lower workpieces, (action 11) is completed, and the loading step is completed;

[0026] After loading is completed, the machine tool pull rod 2 moves to the left (action 12). Figure 5 , Figure 6 The pull plate 4 moves to the left driven by the machine tool pull rod 2 (action 13), and the steering pull pin 13 on the pull plate 4 drives the screw 12 to move to the left (action 14). Under the action of the spiral pair, the screw 12 rotates in the direction shown in the figure, thereby realizing (action 15) and (action 16) at the same time, thereby achieving the purpose of clamping the workpiece.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic finger-type clamping device, comprising a transition plate (1), characterized in that: A machine tool pull rod (2) and a pull plate (4) are arranged at both ends of the transition plate (1), and the machine tool pull rod (2) and the pull plate (4) are connected by a pull nail (3). A fixture body (6) and a rear plate (7) are connected by an extended screw (8) on one side of the transition plate (1). A positioning plate (9) is arranged on one side of the fixture body (6), and the workpiece (18) is positioned by the positioning plate (9). A left stopper (11) is arranged between the fixture body (6) and the rear plate (7). The left stopper (11) is arranged between the fixture body (6) and the rear plate (7). A screw rod (12) is arranged on one side of the clamp body (1), a corner pressure plate (16) is arranged at one end of the screw rod (12), a steering rivet (13) is arranged on the pull plate (4), and the steering rivet (13) is stuck between the left stopper (11) and the screw rod (12) to drive the screw rod (12) to move left and right, a steel ball (14) is arranged on the inner side end of the clamp body (6) through a slotted flat-end screw (15), and a spiral groove is arranged on the screw rod (12) and cooperates with the steel ball (14) to form a spiral pair.

2. The hydraulic finger-type pressing device according to claim 1, characterized in that: The transition plate (1) is connected to the nose of the machine tool spindle and drives the entire system to rotate through the power provided by the machine tool.

3. The hydraulic finger-type pressing device according to claim 1 is characterized in that: A locking nut (5) is provided on the pull plate (4), and the locking nut (5) is used to lock the connection between the pull plate (4) and the pull pin (3).

4. The hydraulic finger-type pressing device according to claim 1, characterized in that: The positioning plate (9) is fixed to the fixture body (6) by means of screws (10) and is used to provide positioning for the workpiece (18).

5. The hydraulic finger-type pressing device according to claim 1, characterized in that: The corner pressure plate (16) is connected to the screw rod (12) via a connecting pin (17) and is used to be fixed on the screw rod (12) to apply pressure.

6. The hydraulic finger-type pressing device according to claim 1, characterized in that: The left stopper (11) cooperates with the steering rivet (13), and the screw rod (12) cooperates with the steering rivet (13) and the connecting pin (17) to achieve left-right movement.

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