Two-jaw large-stroke hydraulic chuck

Abstract

The utility model discloses a two-jaw large-stroke hydraulic chuck which comprises a chuck body, a connecting flange is arranged at the bottom of the chuck body, a first sliding block and a second sliding block are arranged on the two sides of the chuck body in a sliding mode, a pull rod connecting rod is arranged in the chuck body, and a core sleeve for controlling the first sliding block and the second sliding block to move at the same time is arranged on the pull rod connecting rod. A first inclined guide groove and a second inclined guide groove are formed in the two sides of the core sleeve respectively, the first inclined guide groove is connected with the first guide part in a clamped mode, the second inclined guide groove is connected with the second guide part in a clamped mode, the first guide part is arranged on one side of the first sliding block, and the second guide part is arranged on one side of the second sliding block. The first sliding block and the second sliding block can be controlled to move oppositely and transversely at the same time, so that the stroke of the first sliding block and the stroke of the second sliding block are greatly increased, a large-diameter workpiece or a special-shaped workpiece can be clamped, movement guiding of the first sliding block and the second sliding block is improved, an original lead screw structure is changed, and the overall rigidity is good.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, specifically relating to a two-jaw long-stroke hydraulic chuck. Background Technology

[0002] A chuck is a mechanical device used on a machine tool to clamp workpieces. It is a machine tool accessory that clamps and positions workpieces by the radial movement of movable jaws evenly distributed on the disc body. Traditional chucks can be divided into two-jaw chucks, three-jaw chucks, and four-jaw chucks.

[0003] Current two-jaw chucks use a screw structure, which results in poor overall stability of the jaw movement and low overall rigidity. In addition, their overall stroke is limited, so they can only clamp and fix small-diameter workpieces and cannot clamp large-diameter or irregularly shaped workpieces, which limits their use. Therefore, we propose a two-jaw long-stroke hydraulic chuck. Utility Model Content

[0004] The purpose of this utility model is to provide a two-jaw long-stroke hydraulic chuck to solve the problems mentioned in the background art, such as the poor overall movement stability and low overall rigidity of the current two-jaw chuck when it is used, which adopts a screw structure and can only clamp and fix small-diameter workpieces, and cannot clamp large-diameter workpieces or irregularly shaped workpieces, thus limiting its use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a two-jaw large-stroke hydraulic chuck, including a disc body, a connecting flange at the bottom of the disc body, a first slider and a second slider slidably arranged on both sides of the disc body, a pull rod connecting rod arranged inside the disc body, and a core sleeve arranged on the pull rod connecting rod to control the simultaneous movement of the first slider and the second slider;

[0006] The core sleeve is provided with a first inclined guide groove and a second inclined guide groove on both sides respectively. The first inclined guide groove is engaged with the first guide part, and the second inclined guide groove is engaged with the second guide part. The first guide part is located on one side of the first slider, and the second guide part is located on one side of the second slider.

[0007] Preferably, one side surface of the first guide portion and the second guide portion is an inclined surface, and both the first guide portion and the second guide portion are in contact with the inclined portion of the first inclined guide groove and the second inclined guide groove.

[0008] By setting the inclined surface, when the core sleeve moves longitudinally, it can drive the first guide part and the second guide part to move laterally, and thus simultaneously drive the first slider and the second slider to move laterally.

[0009] Preferably, a first longitudinal guide groove and a second longitudinal guide groove are symmetrically arranged on both sides of the first inclined guide groove and the second inclined guide groove. The first longitudinal guide groove is engaged with the protrusions on both sides of the first guide portion, and the second longitudinal guide groove is engaged with the protrusions on both sides of the second guide portion.

[0010] By setting the first longitudinal guide groove and the second longitudinal guide groove, the movement of the first guide part and the second guide part can be limited and guided.

[0011] Preferably, a first connecting part is provided on one side of the first guide part, and the first connecting part is connected to the first slider; a second connecting part is provided on one side of the second guide part, and the second connecting part is connected to the second slider.

[0012] By setting the first connecting part and the second connecting part, the rigidity of the connection between the first guide part and the second guide part and the first slider and the second slider can be improved.

[0013] Preferably, a first inclined groove is provided on both sides of the first connecting part, and the first inclined groove is engaged with the protrusion of the first inclined guide groove; a second inclined groove is provided on both sides of the second connecting part, and the second inclined groove is engaged with the protrusion of the second inclined guide groove.

[0014] By setting the first and second inclined grooves, the movement of the first and second sliders can be guided in two stages.

[0015] Preferably, the first slider has a first transverse groove on both sides, the first transverse groove is connected to the first transverse slider, the first transverse slider is disposed on both sides of the first mounting groove, the first mounting groove is disposed on one side of the disk body, the second slider has a second transverse groove on both sides, the second transverse groove is connected to the second transverse slider, the second transverse slider is disposed on both sides of the second mounting groove, the second mounting groove is disposed on the other side of the disk body.

[0016] By setting the first and second horizontal sliders, the lateral movement of the first and second sliders can be guided.

[0017] Preferably, a dust cover is provided in the middle of the upper side of the disc to prevent debris from entering the interior of the disc during the cutting process.

[0018] Preferably, both the first slider and the second slider have bolt connection holes on their upper sides. These bolt connection holes are used to connect secondary jaws of different specifications, so as to better configure the secondary jaws to meet the clamping needs of irregularly shaped workpieces.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) By moving the core sleeve longitudinally, this utility model can simultaneously control the first slider and the second slider to move laterally in opposite directions, which greatly increases the stroke of the first slider and the second slider, enabling it to clamp large-diameter workpieces or irregularly shaped workpieces.

[0021] (2) This utility model can perform multi-level limiting movement of the first slider and the second slider, improves the movement guidance of the first slider and the second slider, changes the original screw structure, and has good overall rigidity. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a top view cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the core sleeve, the first slider, and the second slider assembled in this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the core sleeve in this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the disc body in this utility model;

[0028] In the diagram: 1. First slider; 2. Dust cover; 3. Second slider; 4. Disc; 5. Connecting flange; 6. Tie rod connecting rod; 7. Bearing rod; 8. Core sleeve; 11. First guide part; 12. First inclined groove; 13. First transverse sliding groove; 14. First connecting part; 31. Second guide part; 32. Second inclined groove; 33. Second transverse sliding groove; 34. Second connecting part; 41. First mounting groove; 42. Second mounting groove; 43. First transverse slider; 44. Second transverse slider; 81. First inclined guide groove; 82. First longitudinal guide groove; 83. Second inclined guide groove; 84. Second longitudinal guide groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6This utility model provides a technical solution: a two-jaw large-stroke hydraulic chuck, including a disc body 4, a connecting flange 5 at the bottom of the disc body 4, a first slider 1 and a second slider 3 slidably arranged on both sides of the disc body 4, a pull rod connecting rod 6 movably arranged inside the disc body 4, and a bearing rod 7 at the bottom of the pull rod connecting rod 6. Specifically, the pull rod connecting rod 6 is connected to the hydraulic pull rod of the machine tool spindle, and the movement of the pull rod connecting rod 6 is controlled by the hydraulic pull rod, thereby controlling the movement of the core sleeve 8. The core sleeve 8 is arranged on the pull rod connecting rod 6 to control the simultaneous movement of the first slider 1 and the second slider 3.

[0031] The core sleeve 8 has a first inclined guide groove 81 and a second inclined guide groove 83 respectively on both sides. The first inclined guide groove 81 is engaged with the first guide part 11, and the second inclined guide groove 83 is engaged with the second guide part 31. The first guide part 11 is located on one side of the first slider 1, and the second guide part 31 is located on one side of the second slider 3. By moving the core sleeve 8 longitudinally, the first slider 1 and the second slider 3 can be controlled to move laterally in opposite directions at the same time. This greatly increases the stroke of the first slider 1 and the second slider 3, and can clamp large-diameter workpieces or irregularly shaped workpieces.

[0032] The first guide part 11 and the second guide part 31 have one side surface that is inclined, and the first guide part 11 and the second guide part 31 are both in contact with the inclined parts of the first inclined guide groove 81 and the second inclined guide groove 83. When the hydraulic tie rod of the machine tool controls the longitudinal movement of the core sleeve 8 through the tie rod connecting rod 6, it can drive the first guide part 11 and the second guide part 31 to move laterally, and then simultaneously drive the first slider 1 and the second slider 3 to move laterally.

[0033] Furthermore, a first longitudinal guide groove 82 and a second longitudinal guide groove 84 are symmetrically arranged on both sides of the first inclined guide groove 81 and the second inclined guide groove 83. The first longitudinal guide groove 82 engages with the protrusions on both sides of the first guide part 11, and the second longitudinal guide groove 84 engages with the protrusions on both sides of the second guide part 31. When the core sleeve 8 moves, the first longitudinal guide groove 82 and the second longitudinal guide groove 84 on the core sleeve 8 move along the first longitudinal guide groove 82 and the protrusions on both sides of the first guide part 11, which can limit and guide the movement of the first guide part 11 and the second guide part 31.

[0034] As a specific embodiment of this application, a first connecting part 14 is provided on one side of the first guide part 11, and the first connecting part 14 is connected to the first slider 1. A second connecting part 34 is provided on one side of the second guide part 31, and the second connecting part 34 is connected to the second slider 3. This can improve the rigidity of the connection between the first guide part 11 and the second guide part 31 and the first slider 1 and the second slider 3.

[0035] Furthermore, the first connecting part 14 is provided with first inclined grooves 12 on both sides, and the first inclined grooves 12 are engaged with the protrusions of the first inclined guide groove 81. The second connecting part 34 is provided with second inclined grooves 32 on both sides, and the second inclined grooves 32 are engaged with the protrusions of the second inclined guide groove 83, which can provide secondary guidance for the movement of the first slider 1 and the second slider 3.

[0036] Specifically, please refer to Figure 4 and Figure 6 The first slider 1 has first transverse grooves 13 on both sides, which are connected to the first transverse slider 43. The first transverse slider 43 is located on both sides of the first mounting groove 41, which is located on one side of the disk body 4. The second slider 3 has second transverse grooves 33 on both sides, which are connected to the second transverse slider 44. The second transverse slider 44 is located on both sides of the second mounting groove 42, which is located on the other side of the disk body 4. When the first slider 1 and the second slider 3 move, they can move along the trajectory of the first transverse grooves 13 and the second transverse grooves 33, and the transverse movement of the first slider 1 and the second slider 3 is guided.

[0037] Furthermore, a dust cover 2 is provided on the middle of the upper side of the disc body 4 to prevent debris from entering the interior of the disc body 4 during the cutting process.

[0038] Furthermore, bolt connection holes are provided on the upper side of both the first slider 1 and the second slider 3. Different specifications of auxiliary claws can be locked and fixed to the first slider 1 and the second slider 3 by bolts. By using auxiliary claws of different specifications, the auxiliary claws can be better configured to meet the clamping of irregular workpieces.

[0039] Working principle and usage process of this utility model:

[0040] According to the specifications of the workpiece, the corresponding auxiliary jaws are installed on the first slider 1 and the second slider 3. The hydraulic pull rod of the machine tool spindle pulls the pull rod connecting rod 6 downward, and the pull rod connecting rod 6 drives the core sleeve 8 downward. The first inclined guide groove 81 and the second inclined guide groove 83 in the core sleeve 8 move along the first guide part 11 and the second guide part 31. The first guide part 11 and the second guide part 31 drive the first slider 1 and the second slider 3 to move laterally towards the center of the disk body 4 along the trajectory of the first inclined guide groove 81 and the second inclined guide groove 83. The first guide part 11 and the second guide part 31 drive the first slider 1 and the second slider 3 to move towards the center of the disk body 4 at the same time. The first slider 1 moves along the first transverse slider 43, and the second slider 3 moves along the second transverse slider 44. When the auxiliary jaws on the first slider 1 and the second slider 3 are in contact with the workpiece, the workpiece is firmly clamped and fixed. This application changes the original screw structure and has good overall rigidity.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two jaw long stroke hydraulic chuck, characterized by: Including the disc (4), the disc (4) bottom is provided with connecting flange (5), the disc (4) both sides are provided with first slider (1) and second slider (3), the disc (4) is provided with pull rod connecting rod (6), the pull rod connecting rod (6) is provided with the core sleeve (8) of controlling first slider (1) and second slider (3) simultaneously moving; The core sleeve (8) both sides are provided with first inclined guide groove (81) and second inclined guide groove (83) respectively, the first inclined guide groove (81) is connected with first guide part (11), the second inclined guide groove (83) is connected with second guide part (31), the first guide part (11) is arranged on the side of first slider (1), and the second guide part (31) is arranged on the side of second slider (3).

2. The two jaw extended travel hydraulic chuck of claim 1 wherein: The side surface of first guide part (11) and second guide part (31) is inclined surface, and the first guide part (11) and the second guide part (31) are attached to the inclined part of first inclined guide groove (81) and second inclined guide groove (83).

3. The two jaw extended travel hydraulic chuck of claim 2 wherein: The first longitudinal guide groove (82) and the second longitudinal guide groove (84) are symmetrically arranged in the first inclined guide groove (81) and the second inclined guide groove (83), the first longitudinal guide groove (82) is connected with the convex on the both sides of first guide part (11), and the second longitudinal guide groove (84) is connected with the convex on the both sides of second guide part (31).

4. The two jaw extended travel hydraulic chuck of claim 3 wherein: The first guide part (11) side is provided with first engaging part (14), the first engaging part (14) is connected with first slider (1), and the second guide part (31) side is provided with second engaging part (34), the second engaging part (34) is connected with second slider (3).

5. The two jaw extended travel hydraulic chuck of claim 4 wherein: The first engaging part (14) both sides are provided with first inclined groove (12), the first inclined groove (12) is connected with the convex part of first inclined guide groove (81), and the second engaging part (34) both sides are provided with second inclined groove (32), the second inclined groove (32) is connected with the convex part of second inclined guide groove (83).

6. The two jaw extended travel hydraulic chuck of claim 1 wherein: The first slider (1) both sides are provided with first transverse sliding groove (13), the first transverse sliding groove (13) is connected with first transverse sliding block (43), the first transverse sliding block (43) is arranged in the both sides of first mounting groove (41), the first mounting groove (41) is arranged on the side of disc (4), the second slider (3) both sides are provided with second transverse sliding groove (33), the second transverse sliding groove (33) is connected with second transverse sliding block (44), the second transverse sliding block (44) is arranged in the both sides of second mounting groove (42), and the second mounting groove (42) is arranged on the other side of disc (4).

7. The two jaw extended travel hydraulic chuck according to any one of claims 1-6, wherein: The upper side of disc (4) is provided with dust cover (2).

8. The two jaw extended travel hydraulic chuck of claim 1 wherein: The upper side of first slider (1) and second slider (3) is provided with bolt connection hole, and the bolt connection hole is used for connecting different specifications of auxiliary claws.

Images