Clamping force retaining chuck

Abstract

The utility model discloses a clamping force retaining chuck, and particularly relates to the technical field of chucks, the clamping force retaining chuck comprises a machine tool spindle, a positioning and clamping assembly is arranged on the machine tool spindle, the positioning and clamping assembly comprises a flange arranged at the top of the machine tool spindle, and a limiting sleeve is arranged at the top of the flange. When the reinforcing abutting piece moves left and right in the limiting sleeve, the second traction guide strip is in friction with the second inclined groove, then the sliding block moves in the guide groove through traction force generated when the reinforcing abutting piece moves, the clamping teeth get close to each other to clamp a workpiece, the chuck rotates at a high speed, and the workpiece is clamped. The sliding block tends to move backwards due to centrifugal force, and the sliding block cannot move backwards due to mechanical locking of the reinforcing abutting piece, so that the workpiece is prevented from being affected by the centrifugal force, high-speed cutting machining is achieved, and the workpiece clamping stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, and more specifically to a clamping force retaining chuck. Background Art

[0002] The chuck is a clamping device based on machine tool processing technology. It plays an important role in modern industrial production, especially in the field of precision machining.

[0003] With the development of Industry 5.0, high-efficiency and high-speed cutting is widely used. During use, the chuck must achieve high-speed rotation. At present, the force-bearing structure of the chuck is usually arranged up and down, and the force-bearing area is limited. As a result, the high-speed rotation of the chuck of the machine tool brings uncontrollable centrifugal force, which causes the claws to bear huge centrifugal force, thereby weakening its clamping force, thereby affecting the stability of the workpiece. In extreme cases, this may cause the workpiece to fall off and cause serious safety accidents. For this purpose, a clamping force retaining chuck is provided. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a clamping force retaining chuck, aiming to solve the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a clamping force holding chuck comprises a machine tool spindle, and a positioning clamping assembly is arranged on the machine tool spindle;

[0006] The positioning and clamping assembly comprises a flange arranged on the top of the machine tool spindle, and a limiting sleeve is arranged on the top of the flange;

[0007] A center piece is arranged in the middle of the limiting sleeve, a plurality of reinforcing abutments are distributed on the outside of the center piece, and a sliding block is arranged on the top of each reinforcing abutment, and a position-adjustable latching tooth is arranged on the top of the sliding block.

[0008] It can be seen that in the above technical solution, the reinforced resist is displaced left and right in the limit sleeve, and the slider is displaced in the guide groove by the traction force when the reinforced resist is displaced, so that each clamping tooth is close to each other to clamp the workpiece, and the chuck rotates at a high speed, and the centrifugal force causes the slider to move backward, and the mechanical locking of the reinforced resist prevents the slider from moving backward, so that the workpiece is kept free from the influence of the centrifugal force, high-speed cutting is achieved, and the clamping stability of the workpiece is ensured;

[0009] Optionally, in a possible embodiment, a plurality of first traction guide strips are fixedly provided on the outer side of the center piece, a first oblique groove is provided on one side of the reinforcing resisting piece, and a plurality of the first traction guide strips are respectively located on one side of the corresponding reinforcing resisting piece, the first traction guide strip is slidably connected to the first oblique groove, a second oblique groove is provided at the bottom of the sliding block, a second traction guide strip is provided at the top of the first oblique groove, the second traction guide strip extends into the second oblique groove and is slidably connected to the second oblique groove, a plurality of guide grooves are provided at the top of the limiting sleeve, and each of the sliding blocks is respectively located in the corresponding guide groove and is slidably connected to the guide groove, a locking block is slidably connected to the sliding block, and two screws that both penetrate the latch teeth and extend to the top of the latch teeth are threadedly connected to the locking block, a rear pulling cylinder is provided at the bottom of the machine tool spindle, a pull rod is provided at the output end of the rear pulling cylinder, and a top plate is provided at the output end of the pull rod, and the top plate is located at the bottom of the center piece;

[0010] It can be seen that in the above technical solution, the rear pulling cylinder is started to drive the top plate to move in the limit sleeve, and when the top plate moves, it contacts the center piece, thereby causing the center piece to move. When the center piece moves, it drives the first traction guide bar to move, and causes the first traction guide bar to rub against the first inclined groove, and the second traction guide bar to rub against the second inclined groove, thereby causing the slider to move in the guide groove through the traction force of the reinforced resistance member when it moves, making it easy for various structures to link.

[0011] Technical effects and advantages of the utility model:

[0012] By setting the positioning clamping assembly, compared with the prior art, through the corresponding coordinated use of various structures, when the top plate is displaced, it contacts with the center piece, and then the center piece is displaced. When the center piece is displaced, the first traction guide bar is driven to displace, and the first traction guide bar is rubbed with the first inclined groove, and then the reinforcing abutment piece is displaced left and right in the limit sleeve;

[0013] When the reinforced resist part moves left and right in the limit sleeve, the second traction guide bar and the second inclined groove will rub against each other, and then the slider will be displaced in the guide groove due to the traction force of the reinforced resist part, so that the various teeth are close to each other to clamp the workpiece. The chuck rotates at high speed, and the centrifugal force causes the slider to tend to move backward. However, the mechanical locking of the reinforced resist part prevents the slider from moving backward, thereby keeping the workpiece from being affected by the centrifugal force, achieving high-speed cutting processing, and ensuring the clamping stability of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0015] Figure 1 It is the front view of the overall structure of the utility model.

[0016] Figure 2 A three-dimensional diagram of the flange, the limiting sleeve and the latching teeth of the utility model

[0017] Figure 3 It is a three-dimensional diagram of the center piece, latch teeth, slider and reinforcing member of the utility model.

[0018] Figure 4 It is a three-dimensional diagram of the limiting sleeve of the utility model.

[0019] Figure 5 For this utility model Figure 3 Exploded diagram.

[0020] Figure 6 It is a three-dimensional diagram of the flange and the top plate of the utility model.

[0021] Figure 7 This is a schematic diagram of the operation of the chuck of the utility model.

[0022] The accompanying drawings are marked as follows: 1. machine tool spindle; 2. flange; 3. limit sleeve; 4. center piece; 5. reinforcing member; 6. slide block; 7. latching tooth; 8. first traction guide strip; 9. first inclined groove; 10. second inclined groove; 11. second traction guide strip; 12. guide groove; 13. locking block; 14. top plate; 15. rear pull cylinder; 16. pull rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model 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 in 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.

[0024] As attached Figure 1-7The clamping force holding chuck shown in the figure drives the first traction guide bar 8 to move when the center piece 4 moves, and makes the first traction guide bar 8 rub against the first inclined groove 9, so that the reinforcing member 5 can move left and right in the limit sleeve 3, and the slider 6 can move in the guide groove 12 through the traction force when the reinforcing member 5 moves, so that each clamping tooth 7 is close to each other to clamp the workpiece, and the chuck rotates at a high speed, and the centrifugal force makes the slider 6 tend to move backward, and the mechanical locking of the reinforcing member 5 prevents the slider 6 from moving backward, so that the workpiece is kept free from the influence of the centrifugal force, high-speed cutting is achieved, and the clamping stability of the workpiece is ensured, and the specific structure of the component is arranged as follows;

[0025] The positioning and clamping assembly comprises a flange 2 arranged on the top of the machine tool spindle 1, and a limiting sleeve 3 is arranged on the top of the flange 2;

[0026] A center piece 4 is arranged in the middle of the limiting sleeve 3 , and a plurality of reinforcing members 5 are distributed on the outer side of the center piece 4 . A slider 6 is arranged on the top of each reinforcing member 5 , and a position-adjustable latching tooth 7 is arranged on the top of the slider 6 .

[0027] A plurality of first traction guide strips 8 are fixedly provided on the outer side of the center piece 4, a first inclined groove 9 is provided on one side of the reinforcing member 5, and a plurality of first traction guide strips 8 are respectively located on one side of the corresponding reinforcing member 5, the first traction guide strip 8 is slidably connected with the first inclined groove 9, a second inclined groove 10 is provided at the bottom of the slider 6, a second traction guide strip 11 is provided on the top of the first inclined groove 9, the second traction guide strip 11 extends into the second inclined groove 10 and is slidably connected with the second inclined groove 10, a plurality of guide grooves 12 are provided on the top of the limit sleeve 3, and each slider 6 is respectively located in the corresponding guide groove 12 and is slidably connected with the guide groove 12, a locking block 13 is slidably connected to the slider 6, and two screws that penetrate the latch teeth 7 and extend to the top of the latch teeth 7 are threadedly connected to the locking block 13, a rear pull cylinder 15 is provided at the bottom of the machine tool spindle 1, a pull rod 16 is provided at the output end of the rear pull cylinder 15, and a top plate 14 is provided at the output end of the pull rod 16, and the top plate 14 is located at the bottom of the center piece 4.

[0028] According to the above structure, when in use, the staff installs the device at the designated position. When clamping the workpiece, the top plate 14 is driven to move in the limiting sleeve 3 by the rear pull cylinder 15. When the top plate 14 moves, it contacts the center piece 4, and then the center piece 4 moves. When the center piece 4 moves, it drives the first traction guide bar 8 to move, and the first traction guide bar 8 and the first inclined groove 9 are rubbed, and then the reinforcing member 5 can be displaced left and right in the limiting sleeve 3.

[0029] When the reinforced resistance member 5 moves left and right in the limit sleeve 3, the second traction guide strip 11 will rub against the second inclined groove 10, and then the slider 6 will be displaced in the guide groove 12 due to the traction force of the reinforced resistance member 5 when it moves, so that the various teeth 7 are close to each other to clamp the workpiece. The chuck rotates at high speed, and the centrifugal force causes the slider 6 to tend to move backward. However, the mechanical locking of the reinforced resistance member 5 prevents the slider 6 from moving backward, thereby keeping the workpiece from being affected by the centrifugal force, achieving high-speed cutting processing, and ensuring the clamping stability of the workpiece.

[0030] Different from the prior art, the present application discloses a clamping force holding chuck, which drives the first traction guide bar 8 to move when the center piece 4 moves, and makes the first traction guide bar 8 rub against the first inclined groove 9, so that the reinforced resistance piece 5 can be displaced left and right in the limit sleeve 3, and the slider 6 can be displaced in the guide groove 12 by the traction force when the reinforced resistance piece 5 moves, so that each tooth 7 is close to each other to clamp the workpiece, and the chuck rotates at high speed, and the centrifugal force makes the slider 6 tend to move backward, and the mechanical locking of the reinforced resistance piece 5 prevents the slider 6 from moving backward, so that the workpiece is kept free from the influence of centrifugal force, high-speed cutting is achieved, and the clamping stability of the workpiece is ensured.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping force retaining chuck, comprising a machine tool spindle (1), characterized in that: The machine tool spindle (1) is provided with a positioning clamping assembly; The positioning clamping assembly comprises a flange (2) arranged on the top of the machine tool spindle (1), and a limiting sleeve (3) is arranged on the top of the flange (2); A center piece (4) is arranged in the middle of the limiting sleeve (3), a plurality of reinforcing abutments (5) are distributed on the outer side of the center piece (4), and a slider (6) is arranged on the top of each reinforcing abutment (5), and a position-adjustable latching tooth (7) is arranged on the top of the slider (6).

2. The clamping force retaining chuck according to claim 1, characterized in that: A plurality of first traction guide strips (8) are fixedly arranged on the outer side of the central member (4), and a first inclined groove (9) is provided on one side of the reinforcing member (5).

3. The clamping force retaining chuck according to claim 2, characterized in that: The plurality of first traction guide strips (8) are respectively located on one side of a corresponding reinforcement stopper (5), and the first traction guide strips (8) are slidably connected to the first inclined groove (9).

4. The clamping force retaining chuck according to claim 2, characterized in that: A second inclined groove (10) is provided at the bottom of the sliding block (6), a second traction guide bar (11) is provided at the top of the first inclined groove (9), and the second traction guide bar (11) extends into the second inclined groove (10) and is slidably connected to the second inclined groove (10).

5. The clamping force retaining chuck according to claim 1, characterized in that: A plurality of guide grooves (12) are provided on the top of the limiting sleeve (3), and each of the sliding blocks (6) is located in a corresponding guide groove (12) and is slidably connected to the guide groove (12).

6. The clamping force retaining chuck according to claim 1, characterized in that: A locking block (13) is slidably connected to the slider (6), and the locking block (13) is threadedly connected to two screw rods that both penetrate the latch teeth (7) and extend to the top of the latch teeth (7).

7. The clamping force retaining chuck according to claim 1, characterized in that: A rear pull cylinder (15) is provided at the bottom of the machine tool spindle (1), a pull rod (16) is provided at the output end of the rear pull cylinder (15), and a top plate (14) is provided at the output end of the pull rod (16), and the top plate (14) is located at the bottom of the center piece (4).

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