Easily-finely-adjusted sleeve spring jacking device for improving workpiece supporting and locking

Abstract

A sleeve spring jacking device easy to finely adjust and capable of improving workpiece supporting and locking is characterized in that a sleeve (5) is transversely installed on the upper portion in a body shell (1), an oil cylinder (20) is transversely arranged on the lower side of the sleeve (5) in parallel, and a piston (8) is slidably installed in the oil cylinder (20); the right end of the sleeve (5) abuts against a cylindrical spiral compression spring (11). The right end of the sleeve (5) abuts against a first handle head (10), the right end of the piston (8) abuts against a second handle head (19), the rear end of the first handle head (10) and the rear end of the second handle head (19) are fixedly installed on the outer wall of a shifting rod sleeve (4) respectively, the shifting rod sleeve (4) is coaxially connected with a rotating shaft (7), and the upper end of the rotating shaft (7) is connected with a handle seat (12). The jacking structure can be manually or hydraulically switched and loosened conveniently, and different jacking and positioning requirements of more actual working conditions are met. And the jacking force of the jacking mechanism on the workpiece can be relieved, so that the workpiece can be easily taken down. Meanwhile, by means of the hydraulic principle, the jacking mechanism is controlled to move through the hydraulic mechanism, and therefore loosening operation on the workpiece is achieved. Selection can be performed according to actual requirements, operation is flexible, convenient, stable and reliable, and workpiece machining precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the workpiece clamping device or positioning device technical field in the machine tool metal processing of IPC classification B25B11 / 00, especially relates to a kind of structure innovation improvement technology of workpiece's top tight device using spring top tight pin and can be manually or liquid loose. BACKGROUND

[0002] Lathe top tight device mainly plays the role of fixed workpiece, keeps the position of workpiece in turning process and strengthens the stability of workpiece etc., and is widely used in various industrial fields. Through top tight device, the displacement and deformation of workpiece under the action of cutting force can be effectively prevented, so as to improve the precision and efficiency of turning processing and ensure the turning quality.

[0003] Lathe top tight device is mainly divided into manual and automatic two types:

[0004] Manual lathe top tight device: need to manually adjust top tight force, suitable for simple turning processing. Its operation is relatively simple, but more manual intervention and adjustment may be needed.

[0005] Automatic lathe top tight device: can realize automatic adjustment of top tight force, suitable for complex turning processing. It can automatically adjust the top tight force according to the material, shape and cutting conditions of workpiece and other factors, so as to improve the processing efficiency and precision.

[0006] Lathe top tight device is widely used in various lathe processing, especially in the case of high precision and high quality processing. For example, when processing long slender shaft, thin-walled parts and other easily deformed workpieces, the role of lathe top tight device is particularly prominent. It can also be used with other lathe accessories such as chuck, center frame, etc. to realize more complex processing requirements.

[0007] The disclosed Chinese patent application 201910361022.3 is a kind of top tight positioning unit and top tight positioning device. The top tight positioning unit includes base, rocker arm and connecting rod, one end of rocker arm is rotatably arranged on base, the other end of rocker arm is rotatably connected with one end of connecting rod, the other end of connecting rod is provided with rotating connection part for rotatably connecting with moving seat;Rocker arm is provided with limiting structure capable of limiting the rotation range of rocker arm. In actual use, the other end of connecting rod is rotatably connected with moving seat, and moving seat is movably arranged on base frame, top tight unit with top pin is arranged on moving seat, rocker arm rotation drives connecting rod movement and moving seat movement on base frame, and positioning is maintained at multiple rotation positions such as two rotation limit positions within the rotation range, and workpiece is positioned and tightened by top pin. The top tight positioning unit can meet the different top tight positioning requirements of workpiece through multiple rotation positions within its own rotation range.

[0008] Chinese patent application 201310265283.8 discloses a elastic top tight device, including telescopic shell, fixed shell, spring, the fixed shell is fixedly arranged in telescopic shell inside, and one end extends out of telescopic shell;The fixed shell extends out of telescopic shell end is equipped with single row centripetal ball bearing;The one end of telescopic shell is fixedly installed with telescopic shell cover;The telescopic shell cover is equipped with the through hole communicated with the inner chamber of telescopic shell;The through hole is installed with workpiece ejector rod;The one end of workpiece ejector rod is connected with one-way thrust ball bearing;The workpiece ejector rod passes through one-way thrust ball bearing and is connected with spring cover;The spring one end is connected on spring cover, and the other end is installed in the inner chamber of fixed shell;Through the cooperation of spring, workpiece ejector rod and spring cover, single row centripetal ball bearing and one-way thrust ball bearing cooperate, so that the workpiece ejector rod in elastic top material device keeps from rotating, and will not rotate with chamfering machine tool rest, so the workpiece surface will not be damaged.

[0009] Generally, the mechanism for positioning the workpiece can have various types, and different types have different applications. In the prior art, when machining, the top tight device is spring-tight ejector pin to top tight workpiece, but the hydraulic top tight structure is difficult to manually loosen when working, which is inconvenient. Practical new type content

[0010] The utility model discloses a kind of easily fine adjustment sleeve spring top tight devices for improving workpiece support locking, utilize spring-tight ejector pin to top tight workpiece, and top tight structure can be conveniently switched loose manually or hydraulically, satisfy more actual working condition different top tight positioning needs.

[0011] Therefore, the utility model, including: body shell, lever sleeve, sleeve, rear rotary cover adjusting screw, rotating shaft, piston, first handle head, cylindrical spiral compression spring, handle seat, center and oil cylinder.The sleeve is installed horizontally in the upper part of the body shell, and the oil cylinder is arranged horizontally on the lower side of the sleeve.The piston is slidably installed in the oil cylinder;The cylindrical spiral compression spring is connected to the right end of the sleeve;The first handle head is connected to the right end of the sleeve, and the second handle head is connected to the right end of the piston;The rear ends of the first handle head and the second handle head are fixedly installed on the outer wall of the lever sleeve;The rotating shaft is coaxially connected to the lever sleeve;The handle seat is connected to the upper end of the rotating shaft.

[0012] The sleeve is installed on the body shell through the front cover and the rear cover at the front end and the rear end respectively;Further, the rear cover and the front cover are sealingly connected to the outer ends of the sleeve.

[0013] The sleeve is installed in the upper part of the body shell through the bearing sleeve.

[0014] The rear rotary cover adjusting screw is connected to the right end of the sleeve through the cylindrical spiral compression spring and is installed on the outer wall of the rear cover.

[0015] The middle part of the bottom surface of the handle seat is coaxially connected with the rotating shaft through a first cylindrical pin, and the rotating shaft at the lower side of the handle seat is coaxially connected with the shifting rod sleeve through a second cylindrical pin.

[0016] The outer wall of the handle seat is radially connected with the handle rod, and the handle head is installed at the outer end of the handle rod.

[0017] Further, to achieve the above-mentioned purpose, the utility model is provided with:

[0018] Especially, the oil cylinder is horizontally installed, the left end of the oil cylinder is closed, the right end of the oil cylinder is provided with a central hole, the front and rear ends of the middle shaft part of the piston are respectively protruded, the piston is slidably installed in the oil cylinder, and the middle shaft part protruded at the right end of the piston passes through and protrudes from the hole of the oil cylinder and abuts against the head part of the second handle head.

[0019] Especially, the oil passage through hole is formed in the outer wall of the oil cylinder, the pin hole is formed in the rear cover and is in orthogonal communication with the oil passage through hole, and the adjusting pin is inserted into the pin hole from the outer surface of the rear cover.

[0020] Especially, the hole is formed in the outer wall of the rear cover at the right end of the piston and the square head fixing screw is installed in the hole, and the left end of the square head fixing screw is coaxially aligned with the right end of the piston.

[0021] Especially, the through hole is formed in the body shell from the top surface to the bottom surface. The pull rod is inserted in the through hole, and the fastening nut is installed at the upper end of the pull rod.

[0022] Compared with the prior art, the utility model has the beneficial effects that: the spring force is used for abutting, the abutting force is stable and reliable, the needs of various workpieces can be met, manual and hydraulic operation modes are provided, the actual needs can be selected, the operation is flexible and convenient, the stability of the workpiece clamping is maintained, and the workpiece machining precision is guaranteed. The device is compact in structure, reasonable in design, easy to manufacture and maintain, and suitable for workpieces of various shapes and sizes, and has wide applicability. BRIEF DESCRIPTION OF DRAWINGS

[0023] The following drawings are illustrative and should not be construed as any limitation on the utility model. By referring to the following drawings, the reader can help understand the embodiments of the utility model and further understand the advantages and technical features of the utility model.

[0024] Figure 1 It is a structure schematic view of the embodiment 1 of the utility model.

[0025] Figure 2 It is a structure schematic view of the embodiment 2 of the utility model. Figure 1 It is a structure schematic view of the embodiment 3 of the utility model.

[0026] Figure 3 It is a structure schematic view of the embodiment 4 of the utility model. Figure 1 It is a structure schematic view of the embodiment 5 of the utility model.

[0027] Figure 4 It is a structure schematic view of the embodiment 6 of the utility model. Figure 3Fig. 1 is a schematic view of the structure of the middle B-B direction.

[0028] Reference signs include:

[0029] 1 - body shell, 2 - rear cover, 3 - front cover, 4 - lever sleeve, 5 - sleeve, 6 - rear cap adjusting screw, 7 - rotating shaft, 8 - piston, 9 - bearing sleeve, 10 - first handle head, 11 - cylindrical helical compression spring, 12 - handle seat, 13 - center, 14 - handle rod, 15 - handle head, 16 - first cylindrical pin, 17 - second cylindrical pin, 18 - precision steel ball, 19 - second handle head, 20 - oil cylinder, 21 - square head set screw, 22 - pull rod, 23 - fastening nut, 24 - adjusting pin. DETAILED DESCRIPTION

[0030] It should be noted that:

[0031] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. The terms "include" and "have" and any variations thereof are intended to cover other possible choices not listed under the same logic. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the present specification, including definitions, controls.

[0035] The present application is mainly composed of a spring, a clamping mechanism, a manual or hydraulic loosening mechanism, and a supporting structure. As the main source of clamping force, the spring generates elastic force when compressed, clamping the workpiece. When the workpiece is placed on the device, the spring is compressed and generates elastic force. The elastic force of the spring is transmitted to the workpiece to ensure that the workpiece is clamped firmly. The clamping mechanism transmits the elastic force to the workpiece, making it firmly clamped in the predetermined position. The manual or hydraulic loosening mechanism provides manual or hydraulic operation mode for loosening the workpiece when needed. By operating the handle, the manual mechanism can release the clamping force of the workpiece, making it easy to be removed. At the same time, by using hydraulic principle, the movement of the clamping mechanism is controlled through the hydraulic mechanism, so as to realize the loosening operation of the workpiece.

[0036] In the present application, this workpiece clamping device has a wide application in the fields of machine tools, fixtures, tooling, etc. For example, in machine tool processing, this device can be used to firmly fix the workpiece on the machine tool workbench to ensure the machining accuracy and stability. In fixture design, this device can be used as part of the fixture for clamping and positioning the workpiece. In addition, in tooling manufacturing, this device can also be used for positioning and clamping operation of various tooling.

[0037] The present application comprises: a body shell 1, a lever sleeve 4, a sleeve 5, a rear cap adjusting screw 6, a rotating shaft 7, a piston 8, a first handle head 10, a cylindrical spiral compression spring 11, a handle seat 12, a center 13 and an oil cylinder 20.

[0038] The present application will be further described below in conjunction with the drawings and examples.

[0039] The preferred embodiments of the present application and the included examples can be more easily understood by referring to the following description of the preferred embodiments of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the definition in the present specification controls.

[0040] Example 1: as shown in the accompanying Figure 1 , 2, 3, 4, the sleeve 5 is installed in the body shell 1, the rear end of the sleeve 5 is installed with a cylindrical helical compression spring 11, the lower part of the sleeve 5 is installed with a piston 8 and an oil cylinder 20, the front end of the sleeve 5 is used for inserting a center 13, the rear end of the piston 8 and the oil cylinder 20 is respectively abutted with the front end of a first handle head 10 and a second handle head 19, and the rear end of the first handle head 10 and the second handle head 19 is coaxially fixed on a lever sleeve 4, the lever sleeve 4 is sleeved on a rotating shaft 7, and the upper end of the rotating shaft 7 is connected with a handle seat 12 and then connected with a handle rod 14. The handle rod 14 can be conveniently switched between manual driving and oil pressure driving, and the sleeve 5 can be controlled to be locked or moved. The sleeve 5 is installed in the body shell 1 through a group of precision steel balls 18 and a bearing sleeve 9 made of quenched steel, and has the characteristics of flexible movement, no radial gap and high support stiffness.

[0041] Specifically, the sleeve 5 is horizontally installed in the upper part of the body shell 1, the oil cylinder 20 is horizontally arranged on the lower side of the sleeve 5, and the piston 8 is slidably installed in the oil cylinder 20; the right end of the sleeve 5 is abutted with the cylindrical helical compression spring 11; the right end of the sleeve 5 is abutted with the first handle head 10, and the right end of the piston 8 is abutted with the second handle head 19; the rear end of the first handle head 10 and the second handle head 19 is respectively fixedly installed on the outer wall of the lever sleeve 4, the lever sleeve 4 is coaxially connected with the rotating shaft 7, and the rotating shaft 7 is connected with the handle seat 12 at the upper end. The front end and the rear end of the sleeve 5 are respectively installed on the body shell 1 through the front cover 3 and the rear cover 2; further, the rear cover 2 and the front cover 3 are sealingly pressed on the front end and the rear end of the sleeve 5. The sleeve 5 is installed in the upper part of the body shell 1 through the bearing sleeve 9. The right end of the sleeve 5 is abutted with the rear rotating cover adjusting screw 6 installed on the outer wall of the rear cover 2 through the cylindrical helical compression spring 11. The bottom surface of the handle seat 12 is coaxially connected with the rotating shaft 7 through the first cylindrical pin 16, and the lower side of the handle seat 12 is coaxially connected with the lever sleeve 4 through the second cylindrical pin 17. The outer wall of the handle seat 12 is radially connected with the handle rod 14, and the handle head 15 is installed on the outer end of the handle rod 14.

[0042] Preferably, the oil cylinder 20 is horizontally installed, the left end of the oil cylinder 20 is closed, the right end is provided with a central hole, the front end and the rear end of the central shaft part of the piston 8 are respectively protruded, the piston 8 is slidably installed in the oil cylinder 20, and the protruded central shaft part of the right end of the piston 8 passes through and protrudes from the rear end of the oil cylinder 20 and abuts against the second handle head 19. The average inner diameter of the left segment of the central shaft hole in the sleeve 5 is greater than that of the right segment. An oil passage through hole is formed in the outer wall of the oil cylinder 20, a pin hole is formed in the rear cover 2 and is in orthogonal communication with the oil passage through hole, and an adjusting pin 24 is inserted into the pin hole from the outer surface of the rear cover 2. A square head set screw 21 is formed in the outer wall of the rear cover 2 behind the right end of the piston 8 and is installed, and the left end of the square head set screw 21 is coaxially aligned with the right end of the piston 8.

[0043] The rotating shaft 7 is connected with the lever sleeve 4 through the second cylindrical pin 17, and the first handle 10 is arranged on the upper portion of the rotating shaft 7.

[0044] The handle rod 14 is fixedly arranged on the handle seat 12, the handle seat 12 is inserted into the hole of the rear cover 2, and the opening groove below the handle seat 12 is clamped on the first cylindrical pin 16 matched with the rotating shaft 7.

[0045] In the embodiment of the utility model, the oil cylinder 20 is arranged below the body shell 1, the oil cylinder 20 is single-acting cavity body, wherein the piston 8 is arranged, and the right end of the piston 8 abuts against the second handle 19 arranged on the lower portion of the rotating shaft 7. When the left cavity of the oil cylinder 20 enters pressure oil, the piston 8 is pushed to move right, the right end of the piston 8 pushes the second handle 19, and the lever sleeve 4 is driven to rotate clockwise, the first handle 10 on the upper portion of the lever sleeve 4 pushes the sleeve 5 to move back to compress the cylindrical helical compression spring 11, the center 13 is retracted, and the clamping on the workpiece is loosened.

[0046] The square head fixing screw 21 is arranged in the lower portion of the rear cover 2 and corresponds to the axis center position of the piston 8, so as to limit the rotating angle of the lever sleeve 4. When the lever sleeve 4 rotates with the rotating shaft 7, the front end smooth head portion of the second handle 19 moves between the right end of the piston 8 and the left end of the square head fixing screw 21.

[0047] In the embodiment of the utility model, the cylindrical helical compression spring 11 can be adjusted, replaced or maintained through the rear cover adjusting screw 6.

[0048] In the embodiment of the utility model, the center 13 for clamping the workpiece is arranged in the sleeve 5, the tail end of the sleeve 5 is provided with the clamping force on the sleeve 5 by the cylindrical helical compression spring 11, the right end of the cylindrical helical compression spring 11 is arranged in the rear cover adjusting screw 6, the rotating rear cover adjusting screw 6 can adjust the compression length of the cylindrical helical compression spring 11, and the size of the clamping force of the cylindrical helical compression spring 11 on the workpiece can be adjusted according to the requirement of the machining process. Since the clamping force is provided by the mechanical energy of the compression spring, even if the machine tool loses hydraulic energy or electric energy, the workpiece cannot be loosened.

[0049] In the embodiment of the utility model, the oil way pressure in the oil cylinder 20 is adjusted through the adjusting pin 24.

[0050] In the embodiment of the utility model, the through hole is arranged on the body shell 1 from the top surface to the bottom surface. When the device is installed on the machine tool workbench, the pull rod 22 is inserted into the through hole, the hook structure at the lower end of the pull rod 22 is clamped on the movable working beam of the machine tool, and correspondingly, the hook is matched with the lower convex clamping table at the edge of the bottom surface of the body shell 1 at the same time, the fastening nut 23 at the upper end of the pull rod 22 is installed, and the device is fixed on the machine tool workbench.

[0051] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An improved fine adjustment sleeve spring jacking device for improving the locking of workpiece support, comprising a body shell (1), a lever sleeve (4), a sleeve (5), a rear rotary cap adjusting screw (6), a rotating shaft (7), a piston (8), a first handle head (10), a cylindrical helical compression spring (11), a handle seat (12), a center (13) and an oil cylinder (20); characterized in that, The sleeve (5) is installed horizontally in the upper part of the body shell (1), and the oil cylinder (20) is arranged horizontally on the lower side of the sleeve (5). The piston (8) is slidably installed in the oil cylinder (20). The right end of the sleeve (5) abuts against the cylindrical spiral compression spring (11). The right end of the sleeve (5) abuts against the first handle head (10), and the right end of the piston (8) abuts against the second handle head (19). The rear ends of the first handle head (10) and the second handle head (19) are fixedly installed on the outer wall of the lever sleeve (4). The rotating shaft (7) is coaxially connected with the lever sleeve (4), and the rotating shaft (7) is connected with the handle seat (12) at the upper end.

2. The easily adjustable sleeve spring set-up for improved work support lock according to claim 1, characterized in that, The front end and the rear end of the sleeve (5) are installed on the body shell (1) through the front cover (3) and the rear cover (2) respectively.

3. The easily adjustable sleeve spring set-up for improved work support lock according to claim 1, wherein, The sleeve (5) is installed in the upper part of the body shell (1) through the bearing sleeve (9) and the bearing.

4. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, characterized in that, The right end of the sleeve (5) abuts against the rear rotating cover adjusting screw (6) installed on the outer wall of the rear cover (2) through the cylindrical spiral compression spring (11).

5. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, wherein, The bottom surface of the handle seat (12) is coaxially connected with the rotating shaft (7) through the first cylindrical pin (16), and the rotating shaft (7) is coaxially connected with the lever sleeve (4) through the second cylindrical pin (17) on the lower side of the handle seat (12).

6. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, characterized in that, The outer wall of the handle seat (12) is radially connected with the handle rod (14), and the handle head (15) is installed on the outer end of the handle rod (14).

7. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, characterized in that, The oil cylinder (20) is installed horizontally, the left end of the oil cylinder (20) is closed, the right end is provided with a central hole, the central axis of the piston (8) protrudes at the front end and the rear end, the piston (8) is slidably installed in the oil cylinder (20), and the central axis of the piston (8) protruding at the right end passes through and protrudes from the hole of the oil cylinder (20) and abuts against the head of the second handle head (19).

8. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, characterized in that, An oil passage hole is formed in the outer wall of the oil cylinder (20), a pin hole is formed in the rear cover (2) and is in orthogonal communication with the oil passage hole, and an adjusting pin (24) is inserted into the pin hole from the outer surface of the rear cover (2).

9. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, wherein, A square head set screw (21) is installed in the hole formed in the outer wall of the rear cover (2) at the rear of the right end of the piston (8), and the left end of the square head set screw (21) is coaxially aligned with the right end of the piston (8).

10. The easily adjustable sleeve spring take-up device for improved work support lock according to claim 1, characterized in that, A through hole is formed in the body shell (1) from the top surface to the bottom surface, and a pull rod (22) is inserted in the through hole. The pull rod (22) is provided with a fastening nut (23) at the upper end.

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