Telescopic adjustable hydraulic chuck

Abstract

The utility model relates to the field of chucks, and discloses a telescopic adjustable hydraulic chuck which comprises a chuck body, the bottom of the chuck body is fixedly connected with a mounting frame, an adjusting mechanism is arranged in the mounting frame and comprises a sliding disc, and the outer portion of the sliding disc is slidably connected into the mounting frame. And the bottoms of the sliding discs are fixedly connected with hydraulic cylinders, the exteriors of the hydraulic cylinders are fixedly connected to the interior of the mounting frame, the exteriors of the sliding discs are fixedly connected with first connecting pieces, and transmission assemblies are arranged in the first connecting pieces. The adjusting mechanism comprises the sliding disc, the hydraulic cylinder and the like, the sliding disc is linked with the clamping jaw in the chuck through the first connecting piece and the transmission assembly, and the clamping jaw is driven by the hydraulic cylinder to stretch out and draw back so as to clamp and loosen a workpiece. The clamping jaws are provided with installation grooves, threaded holes are provided with limiting plates, and a limiting assembly composed of an anti-loosening frame and the like is further arranged, so that the clamping jaws are prevented from loosening when hydraulic faults occur, and stable clamping is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to chuck field especially relates to a telescopic adjustable hydraulic chuck. BACKGROUND

[0002] Chucks are a kind of fixture for fixing workpieces, widely used in lathe, milling machine and other machine tools. It clamps a part of the workpiece, so that it remains stable during machining to ensure machining accuracy. Chuck is usually composed of three or more clamping jaws, the opening and closing of clamping jaw can be controlled by rotating the handle of chuck or electric drive device. According to different clamping methods, chuck can be divided into manual chuck and automatic chuck, etc. to adapt to different machining requirements and workpiece size.

[0003] Hydraulic chuck is a kind of mechanical device that uses hydraulic drive system for clamping, widely used in lathe, milling machine and other machine tools, used for fixing and clamping workpiece. Unlike traditional manual or pneumatic chuck, hydraulic chuck provides powerful clamping force through hydraulic system, so that it has higher accuracy and stability when clamping workpiece. Hydraulic chuck is usually composed of hydraulic cylinder, piston, clamping jaw and clamping sleeve, etc. The pressure of hydraulic oil acts on the piston in the cylinder, and then pushes the clamping jaw to clamp or release the workpiece automatically.

[0004] If the hydraulic system fails, resulting in hydraulic oil leakage or pressure loss, it may cause the clamping jaw to loosen, so that the workpiece cannot be firmly fixed. This not only causes the workpiece to fall off, but also may cause serious damage to the machine tool, even break the protective glass, threatening the safety of the operator. INVENTION CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a telescopic adjustable hydraulic chuck, which aims at improving the problem that if the hydraulic system fails, resulting in hydraulic oil leakage or pressure loss, it may cause the clamping jaw to loosen, so that the workpiece cannot be firmly fixed in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a telescopic adjustable hydraulic chuck, comprising a chuck, the bottom of the chuck is fixedly connected with a mounting frame, the inside of the mounting frame is provided with an adjusting mechanism;

[0007] The adjusting mechanism comprises a sliding disc, the outside of the sliding disc is slidably connected in the inside of the mounting frame, the bottom of the sliding disc is fixedly connected with a hydraulic cylinder, the outside of the hydraulic cylinder is fixedly connected in the inside of the mounting frame, the outside of the sliding disc is fixedly connected with a connecting piece one, the inside of the connecting piece one is provided with a transmission assembly.

[0008] Further, the transmission assembly comprises a connecting rod, an outer part of the connecting rod is rotationally connected to an inner part of the connecting piece one, and an end of the connecting rod away from the connecting piece one is rotationally connected with the connecting piece two.

[0009] Further, the inner part of the chuck is provided with a sliding groove, the inner part of the sliding groove is slidably connected with a clamping jaw, the inner part of the clamping jaw is provided with a mounting groove, the inner part of the mounting groove is provided with a limiting plate, the inner part of the limiting plate and the clamping jaw is provided with a threaded hole, the threaded hole is threadedly connected with a bolt one, and the outer part of the clamping jaw is provided with a limiting assembly.

[0010] Further, the limiting assembly comprises an anti-loosening frame, the outer part of the anti-loosening frame is fixedly connected with a connecting plate at both ends, the inner part of the connecting plate is threadedly connected with a bolt two, and the outer part of the bolt two is threadedly connected with a nut.

[0011] Further, the outer wall of the anti-loosening frame is in abutment with the clamping jaw.

[0012] Further, the outer part of the clamping jaw is fixedly connected with a rubber pad.

[0013] Further, the top of the connecting piece two is fixedly connected to the bottom of the clamping jaw.

[0014] The utility model has the advantages of the following:

[0015] 1、 the utility model discloses a hydraulic cylinder makes the piston move, and the piston rod drives the sliding disc to move, and the sliding disc drives the connecting rod to move through the connecting piece one, and the connecting rod drives the clamping jaw to move through the connecting piece two, and the clamping jaw slides along the radial sliding slot of the disc body, realizes clamping, loosening action, and accurately fixes the workpiece, and when processing is finished, the hydraulic oil flows reversely, and the clamping jaw retreats, and the workpiece is taken out.

[0016] 2、 the utility model discloses in the working process, the clamping jaw is clamped to the workpiece, and the workpiece limits the inward movement of the clamping jaw, therefore, the inner wall of the anti-loosening frame is in abutment with the surface of the clamping jaw, when the hydraulic system fails and the clamping jaw can be loose, the freedom of the clamping jaw is limited, the clamping jaw is avoided loose, always maintains the clamping state, and cannot be separated from the workpiece. DRAWINGS

[0017] Figure 1 A perspective view of a telescopic adjustable hydraulic chuck is provided for the utility model;

[0018] Figure 2 A partial structure section view of a telescopic adjustable hydraulic chuck is provided for the utility model;

[0019] Figure 3 A partial structure schematic view of a telescopic adjustable hydraulic chuck is provided for the utility model.

[0020] Legend:

[0021] 1 chuck; 2 mounting frame; 3 hydraulic cylinder; 4 sliding disc; 5 connecting piece one; 6 connecting rod; 7 connecting piece two; 8 clamping jaw; 9 sliding groove; 10 threaded hole; 11 mounting groove; 12 limiting plate; 13 bolt one; 14 anti-loosening frame; 15 connecting plate; 16 bolt two; 17 nut; 18 rubber pad. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Referring to Figure 1 The utility model provides an embodiment: a telescopic adjustable hydraulic chuck, including chuck 1, the bottom fixed connection of chuck 1 has mounting frame 2, the inside of mounting frame 2 is provided with adjusting mechanism, adjusting mechanism includes sliding disc 4, the outside sliding connection of sliding disc 4 is in the inside of mounting frame 2, the bottom fixed connection of sliding disc 4 has hydraulic cylinder 3, the outside fixed connection of hydraulic cylinder 3 is in the inside of mounting frame 2, the outside fixed connection of sliding disc 4 all has connecting piece one 5, the inside of connecting piece one 5 is provided with transmission assembly, transmission assembly includes connecting rod 6, the outside rotation connection of connecting rod 6 is in the inside of connecting piece one 5, the rotation connection of connecting rod 6 far from connecting piece one 5 one end has connecting piece two 7.

[0024] Hydraulic chuck 1 structure: the bottom fixed connection of this chuck 1 has mounting frame 2, and the inside of mounting frame 2 is provided with adjusting mechanism. Adjusting mechanism includes sliding disc 4, and sliding disc 4 is slidably connected in the inside of mounting frame 2. The bottom fixed connection of hydraulic cylinder 3, hydraulic cylinder 3 can push sliding disc 4 to move, to drive clamping jaw 8 to carry out clamping or loosening workpiece, adjusting mechanism and transmission system: transmission assembly is composed of connecting rod 6, connecting piece one 5 and connecting piece two 7. Sliding disc 4 is pushed by hydraulic cylinder 3, and then connecting rod 6 is driven to move by connecting piece one 5, and clamping jaw 8 is driven to move by connecting piece two 7. The whole transmission mechanism can accurately control the action of clamping jaw 8, and accurate clamping or loosening of workpiece is realized.

[0025] Referring to Figure 2 and Figure 3The inner part of the chuck 1 is provided with a sliding groove 9, the inner part of the sliding groove 9 is slidably connected with a clamping jaw 8, the inner part of the clamping jaw 8 is provided with an installation groove 11, the inner part of the installation groove 11 is provided with a limiting plate 12, the inner part of the limiting plate 12 and the clamping jaw 8 is provided with a threaded hole 10, the inner part of the threaded hole 10 is threadedly connected with a bolt 13, the outer part of the clamping jaw 8 is provided with a limiting assembly, the limiting assembly comprises an anti-loosening frame 14, the outer part of the anti-loosening frame 14 is fixedly connected with a connecting plate 15, the inner part of the connecting plate 15 is threadedly connected with a bolt 16, the outer part of the bolt 16 is threadedly connected with a nut 17, the anti-loosening frame 14 is in abutment with the outer wall of the clamping jaw 8, the outer part of the clamping jaw 8 is fixedly connected with a rubber pad 18, and the top of the connecting piece two 7 is fixedly connected to the bottom of the clamping jaw 8.

[0026] The cooperation of the clamping jaw 8 and the sliding groove 9: the clamping jaw 8 slides in the chuck 1 through the sliding groove 9, and the design of the sliding groove 9 enables the clamping jaw 8 to move accurately in the radial direction. The inner part of the clamping jaw 8 is provided with an installation groove 11, and the installation groove 11 is provided with a limiting plate 12, which is used for limiting the anti-loosening frame 14. The threaded hole 10 in the limiting plate 12 and the clamping jaw 8 is fixed by the bolt 13. The design of the anti-loosening assembly: in order to prevent the clamping jaw 8 from being separated from the workpiece when the hydraulic system fails or loosens, the anti-loosening frame 14 assembly is designed. The anti-loosening frame 14 is in contact with the outer wall of the clamping jaw 8, and when the clamping jaw 8 loosens, the anti-loosening frame 14 prevents the clamping jaw 8 from falling off or losing the clamping force by limiting the movement of the clamping jaw 8. The function of the rubber pad 18: the rubber pad 18 is arranged outside the clamping jaw 8, which can prevent the clamping jaw 8 from scratching or damaging the workpiece when it comes into contact with the workpiece, thereby improving the stability and precision of clamping. The bolt and the connecting structure: the connecting plate 15 is arranged at both ends of the anti-loosening frame 14, the bolt 16 is threadedly connected in the connecting plate 15, and the bolt 16 further fixes the anti-loosening frame 14 through the nut 17, thereby enhancing the reliability of the anti-loosening.

[0027] Working principle: when the telescopic adjustable hydraulic chuck 1 works, it is driven by the hydraulic cylinder 3. The hydraulic cylinder 3 is fixed in the installation frame 2 and connected with the bottom of the sliding disc 4. When the hydraulic cylinder 3 works, the piston rod of the hydraulic cylinder 3 extends and retracts to push the sliding disc 4 to slide in the installation frame 2. When the sliding disc 4 moves, the connecting rod 6 is driven to move by the externally fixed connecting piece one 5, the other end of the connecting rod 6 drives the clamping jaw 8 through the connecting piece two 7, so that the clamping jaw 8 slides accurately along the radial direction along the sliding groove 9 arranged in the chuck 1, thereby realizing the clamping and loosening of the workpiece. During the clamping of the workpiece, the rubber pad 18 fixed outside the clamping jaw 8 avoids scratching the workpiece, thereby ensuring the stability and precision of clamping.

[0028] Meanwhile, the claw 8 is provided with an anti-loosening mechanism, an internal mounting groove 11 is arranged with a limiting plate 12, both are fixed through the threaded hole 10 and the bolt 1, the outer wall of the claw 8 abuts against the anti-loosening frame 14, and the anti-loosening frame 14 is fixed firmly through the connecting plate 15, the bolt 2 16 and the nut 17. Once the hydraulic system fails, the claw 8 has a loosening trend, the anti-loosening frame 14 limits the movement of the claw 8, prevents it from being separated from the workpiece, and maintains the clamping state.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A hydraulic chuck with telescopic adjustment, comprising a chuck (1), characterized in that: The bottom of the chuck (1) is fixedly connected with a mounting frame (2), and the inside of the mounting frame (2) is provided with an adjusting mechanism. The adjusting mechanism comprises a sliding disc (4), the outside of the sliding disc (4) is slidably connected in the inside of the mounting frame (2), the bottom of the sliding disc (4) is fixedly connected with a hydraulic cylinder (3), the outside of the hydraulic cylinder (3) is fixedly connected in the inside of the mounting frame (2), and the outside of the sliding disc (4) is fixedly connected with a connecting piece one (5), and the inside of the connecting piece one (5) is provided with a transmission assembly.

2. The hydraulic chuck according to claim 1, wherein: The transmission assembly comprises a connecting rod (6), the outside of the connecting rod (6) is rotatably connected in the inside of the connecting piece one (5), and one end, away from the connecting piece one (5), of the connecting rod (6) is rotatably connected with a connecting piece two (7).

3. The hydraulic chuck of claim 1, wherein: The inside of the chuck (1) is provided with a sliding groove (9), the inside of the sliding groove (9) is slidably connected with a claw (8), the inside of the claw (8) is provided with a mounting groove (11), the inside of the mounting groove (11) is provided with a limiting plate (12), the inside of the limiting plate (12) and the claw (8) is provided with a threaded hole (10), the inside of the threaded hole (10) is screwedly connected with a bolt one (13), and the outside of the claw (8) is provided with a limiting assembly.

4. The hydraulic chuck of claim 3, wherein: The limiting assembly comprises an anti-loosening frame (14), the outside of the anti-loosening frame (14) is fixedly connected with a connecting plate (15) at both ends, the inside of the connecting plate (15) is screwedly connected with a bolt two (16), and the outside of the bolt two (16) is screwedly connected with a nut (17).

5. A hydraulic chuck according to claim 4, wherein: The anti-loosening frame (14) abuts against the outer wall of the claw (8).

6. The hydraulic chuck of claim 3, wherein: The outside of the claw (8) is fixedly connected with a rubber pad (18).

7. The hydraulic chuck of claim 2, wherein: The top of the connecting piece two (7) is fixedly connected with the bottom of the claw (8).

Images