A multi-functional bench vice with quick-change jaws

Abstract

The present invention relates to a multi-functional bench vice with quick-change jaws, which comprises a movable jaw body, a fixed jaw body, a lead screw and a handle. A fixed jaw is provided on the fixed jaw body. A quick-change assembly and a movable jaw assembly are installed on the movable jaw body. The quick-change assembly includes an adjusting rod and a pull rod. The adjusting rod is installed on the movable jaw body through an external thread and is connected to one end of the pull rod through an internal thread. The helix directions of the external thread and the internal thread are opposite. The other end of the pull rod passes through the movable jaw body and is clamped on the movable jaw assembly, and the movable jaw assembly corresponds to the fixed jaw. The opposite helix directions of the internal and external threads enable the adjusting rod to rotate one week, and the relative movement between the adjusting rod and the pull rod is two pitches, improving the disassembly efficiency of the jaw assembly; the movable jaw assembly can adaptively adjust the corresponding angle according to the shape of the workpiece and the taper of the tapered workpiece, ensuring firm clamping of the workpiece, meeting the clamping requirements of different workpieces, reducing the number of jaws and lowering the processing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of bench vises, and particularly to a multifunctional bench vise with a quick-change jaw. Background Art

[0002] A bench vise, also known as a table vise, is a general fixture for clamping workpieces. The bench vise includes a movable jaw body and a fixed jaw body. A movable jaw is installed on the movable jaw body through screws, and a fixed jaw is installed on the fixed jaw body through screws. The workpiece is placed inside the jaws, and by moving the movable jaw body towards the fixed jaw body, the movable jaw and the fixed jaw cooperate to clamp the workpiece.

[0003] The working surfaces of the movable jaw and the fixed jaw are generally flat. In actual work, relatively few workpieces are regular bodies. Due to the special outer contour of the workpiece, the traditional flat jaws cannot adjust the degree of fit with the workpiece surface according to the actual situation, resulting in unreliable clamping. If the workpiece is forcibly clamped, it is easy to damage the surface or the body of the workpiece, affecting the surface accuracy of the finished product. In the prior art, in order to clamp cylindrical workpieces with different diameters, V-shaped grooves or semi-circular grooves are often provided on the working surfaces of the jaws. By replacing the jaws, the clamping requirements for workpieces of different sizes can be met. Since the jaws are installed on the jaw body through screws, when replacing the jaws, it is necessary to first move the movable jaw body a certain distance relative to the fixed jaw body, and then use an Allen wrench to remove the jaws from the jaw body, and then install the new jaws on the jaw body through screws. After the bench vise has been used for a period of time, oil stains are likely to accumulate on the jaws. When disassembling the screws, it is necessary to clean the oil stains first. Not only is the disassembly and assembly efficiency low, but also the space between the two jaws is limited, and it is easy to hurt the hand during disassembly and assembly, bringing inconvenience to the use process.

[0004] In addition, in the prior art, workpieces with a taper are generally clamped by jaws with flat working surfaces, resulting in an unreliable state. If jaws with different tapers are machined according to the workpiece taper, it will not only lead to too many types of jaw bodies, which is not convenient for storage, increase the processing cost, but also make the disassembly inconvenient. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a bench vise with a quick-change jaw for the problem of inconvenient jaw replacement in the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a multifunctional bench vise for the problem of unreliable clamping of tapered workpieces in the prior art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: A multi-functional bench vice with a quick-change jaw, including a movable jaw body, a fixed jaw body, a lead screw, and a handle. The movable jaw body is slidably installed on the fixed jaw body. One end of the lead screw is connected to the handle, and the other end passes through the movable jaw body and is threadedly connected to the fixed jaw body. A fixed jaw is provided on the fixed jaw body. A quick-change assembly and a movable jaw assembly are installed on the movable jaw body. The quick-change assembly includes an adjusting rod and a pull rod. The adjusting rod is provided with external threads and internal threads. The adjusting rod is installed on the movable jaw body through the external threads, and the adjusting rod is connected to one end of the pull rod through the internal threads. The helix directions of the external threads and the internal threads are opposite. The other end of the pull rod passes through the movable jaw body and is clamped on the movable jaw assembly. The movable jaw assembly corresponds to the fixed jaw.

[0008] The beneficial effects of the present invention are as follows: By making the helix directions of the internal and external threads on the adjusting rod opposite, when the adjusting rod rotates one week, the relative movement between the adjusting rod and the pull rod is two pitches, which improves the disassembly efficiency of the jaw assembly; By disassembling the adjusting rod outside the jaw, the operating space is not restricted, reducing the difficulty of disassembly. The adjusting rod is far from the working surface of the jaw, reducing oil stain blocking the adjusting rod, with convenient operation and avoiding hand injury, ensuring the safety of use.

[0009] On the basis of the above technical solution, in order to achieve convenient use and the stability of the equipment, the present invention can further improve the above technical solution as follows:

[0010] Further, the movable jaw assembly includes a quick-change base and a quick-change jaw. A positioning table is provided on the movable jaw body. The quick-change base is installed on the positioning table. An inwardly concave arc-shaped groove is provided on the quick-change base. One side of the quick-change jaw is provided with a working surface corresponding to the fixed jaw, and the other side is provided with an outwardly protruding guide body. The guide body is slidably arranged in the arc-shaped groove. The movable jaw assembly is used to adaptively adjust the angle between the quick-change jaw and the fixed jaw.

[0011] The beneficial effect of adopting the above further technical solution is that through the cooperation of the guide body and the arc-shaped groove, the quick-change jaw slides along the arc-shaped groove, thereby adaptively adjusting the angle between the quick-change jaw and the fixed jaw, meeting the clamping requirements of workpieces with different tapers, having firm clamping, reducing the number of jaws, and reducing costs.

[0012] Further, the movable jaw assembly further includes a positioning pin. A positioning hole corresponding to the positioning pin is provided on the quick-change base. One end of the positioning pin is installed on the movable jaw body, and the other end is inserted into the positioning hole.

[0013] The beneficial effect of adopting the above further technical solution is that the quick-change base is positioned by the positioning pin, the assembly difficulty is reduced, and the quick-change base is stably installed on the movable jaw body.

[0014] Further, a positioning groove is provided on the guide body, the positioning groove extends along the guide body, and the positioning pin is inserted into the positioning groove through the positioning hole.

[0015] The beneficial effect of adopting the above further technical solution is that through the cooperation of the positioning groove and the positioning pin, the guide body is prevented from sliding out of the arc groove, and the use convenience is improved; and by setting positioning grooves with different radian, the angle of adjustment of the quick-change jaw is controlled.

[0016] Further, an avoidance area is provided on one side of the quick-change base close to the quick-change jaw.

[0017] The beneficial effect of adopting the above further technical solution is that when the quick-change jaw moves, interference between the quick-change jaw and the quick-change base is avoided, the range of the self-adaptive adjustment angle of the quick-change jaw is increased, and the clamping requirements of workpieces with different tapers are met.

[0018] Further, a receiving groove is provided on the positioning table, a concave pit is provided on the lower end surface of the quick-change base, a protrusion is provided at the end of the pull rod, and the protrusion is arranged in the receiving groove and the concave pit.

[0019] The beneficial effect of adopting the above further technical solution is that the overall structure of the bench vice is more compact. Through the cooperation of the protrusion and the concave pit, the installation stability of the quick-change base is ensured, and the connection is simple, the disassembly is convenient, and the disassembly efficiency is improved.

[0020] Further, the cross section of the arc groove and the guide body is in a dovetail shape.

[0021] The beneficial effect of adopting the above further technical solution is that the quick-change jaw is ensured to slide stably along the quick-change base, shaking is avoided, and the firmness of workpiece clamping is ensured.

[0022] Further, at least one arc groove is provided, and the number of the quick-change jaws and the positioning pins corresponds to the number of the arc grooves.

[0023] The beneficial effect of adopting the above further technical solution is that by providing a plurality of quick-change jaws, the clamping requirements of a plurality of workpieces with the same or different tapers are met, the use convenience and versatility are improved, the number of jaws is reduced, and the processing cost is reduced.

[0024] Further, an internal hexagon is provided at the end of the adjusting rod, and the external thread of the adjusting rod is Left a rotation thread, and the internal thread is a right-handed thread.

[0025] The beneficial effects of adopting the above further technical solution are as follows: it is convenient to disassemble the adjusting rod, the operation difficulty is reduced, and the connection is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional schematic diagram of Embodiment 1 of the present invention;

[0027] Figure 2 A schematic diagram when the quick-change component is installed in Embodiment 1 of the present invention;

[0028] Figure 3 A cross-sectional view of the multi-functional bench vice in Embodiment 1 of the present invention;

[0029] Figure 4 A schematic diagram of the quick-change component and the movable jaw component in Embodiment 1 of the present invention;

[0030] Figure 5 A schematic diagram of the connection between the pull rod and the quick-change base in Embodiment 1 of the present invention;

[0031] Figure 6 A schematic diagram of the quick-change base in Embodiment 1 of the present invention;

[0032] Figure 7 A schematic diagram of the quick-change jaw in Embodiment 1 of the present invention;

[0033] Figure 8 A schematic diagram of the quick-change base in Embodiment 2 of the present invention;

[0034] Figure 9 A schematic diagram of the cooperation between the quick-change base and the positioning pin in Embodiment 2 of the present invention.

[0035] The reference numerals are recorded as follows: 1, movable jaw body; 101, receiving groove; 2, fixed jaw body; 3, quick-change base; 301, arc groove; 302, pit; 303, avoidance area; 4, quick-change jaw; 401, guiding body; 402, positioning groove; 5, adjusting rod; 6, pull rod; 7, positioning pin; 8, fixed jaw; 9, lead screw; 10, nut; 11, spring; 12, washer; 13, elastic cylindrical pin; 14, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0037] Embodiment 1

[0038] As Figures 1 to 7As shown in the figure, the present invention discloses a multi-functional bench vice with a quick-change jaw, which includes a movable jaw body 1, a fixed jaw body 2, a lead screw 9 and a handle 14. The movable jaw body 1 is slidably installed on the fixed jaw body 2. One end of the lead screw 9 is connected to the handle 14, and the other end passes through the movable jaw body 1 and is threadedly connected to a nut 10 on the fixed jaw body 2. A spring 11 is sleeved on the lead screw. One end of the spring 11 abuts against the inner wall of the movable jaw body 1. The other end of the spring 11 is provided with a washer 12 and is fixed by an elastic cylindrical pin 13. A fixed jaw 8 is provided on the fixed jaw body 2, and anti-slip threads are provided on the fixed jaw 8. A quick-change component and a movable jaw component are installed on the movable jaw body 1. The quick-change component includes an adjusting rod 5 and a pull rod 6. The adjusting rod 5 is provided with external threads and internal threads. The adjusting rod 5 is installed on the movable jaw body 1 through the external threads. The adjusting rod 5 is connected to one end of the pull rod 6 through the internal threads. The helix directions of the external threads and the internal threads are opposite. The other end of the pull rod 6 passes through the movable jaw body 1 and is clamped on the movable jaw component. The movable jaw component corresponds to the fixed jaw 8.

[0039] In this embodiment, there is one quick-change jaw 4, one adjusting rod 5 and one pull rod 6 respectively. An internal hexagon is provided at the end of the adjusting rod 5, which is convenient for disassembling the adjusting rod 5 with a hexagon wrench, improving the convenience of disassembly. The external threads of the adjusting rod 5 are left-handed threads, and the internal threads of the adjusting rod 5 are right-handed threads. When the adjusting rod 5 is screwed into the movable jaw body 1 by one turn, two pitches are screwed out between the adjusting rod 5 and the pull rod 6, so that the pull rod 6 pushes out the quick-change base 3, and the quick-change base 3 is quickly disassembled; when the adjusting rod 5 is screwed out of the movable jaw body 1 by one turn, two pitches are screwed into between the adjusting rod 5 and the pull rod 6, and the pull rod 6 drives the quick-change base 3 to move towards the movable jaw body 1, realizing the quick installation and fixation of the quick-change base 3. The operation is simple, and the disassembly and assembly efficiency is improved. The adjusting rod 5 is installed in the movable jaw body 1 through the external threads, reducing the blockage of the adjusting rod 4 by oil stains and reducing the overall volume of the bench vice.

[0040] Optionally, four corners can also be provided at the end of the adjusting rod 5. The external threads of the adjusting rod 5 are right-handed threads, and the internal threads are left-handed threads. It can also achieve the purpose of screwing in or out two pitches when the adjusting rod 5 rotates one turn, improving the disassembly efficiency.

[0041] The movable jaw assembly includes a quick-change base 3 and a quick-change jaw 4. A positioning table is provided on the movable jaw body 1, and the quick-change base 3 is installed on the positioning table for preliminary installation and positioning, reducing the installation difficulty. An inwardly concave arc groove 301 is provided on the quick-change base 3. One side of the quick-change jaw 4 is provided with a working surface corresponding to the fixed jaw 8. The working surface is a smooth plane, and the workpiece is clamped by the cooperation of the working surface and the fixed jaw 8. The other side of the quick-change jaw 4 is provided with an outwardly protruding guide body 401, and the guide body 401 is slidably arranged in the arc groove 301. The movable jaw assembly is used to adaptively adjust the angle between the quick-change jaw 4 and the fixed jaw 8. By the cooperation of the guide body 401 and the arc groove 301, the quick-change jaw 4 slides along the arc groove 301, so as to adaptively adjust the angle between the quick-change jaw 4 and the fixed jaw 8, meet the clamping requirements of workpieces with different tapers, ensure firm clamping, reduce the number of jaws, and reduce costs.

[0042] The movable jaw assembly further includes a positioning pin 7. A positioning hole corresponding to the positioning pin 7 is provided on the quick-change base 3. One end of the positioning pin 7 is installed on the movable jaw body 1, and the other end is inserted into the positioning hole. The quick-change base 3 is positioned by the positioning pin 7, reducing the assembly difficulty and ensuring that the quick-change base 3 is stably installed on the movable jaw body 1.

[0043] A positioning groove 402 is provided on the guide body 401, and the positioning groove 402 extends along the guide body 401. The positioning pin 7 passes through the positioning hole and is inserted into the positioning groove 402. By the cooperation of the positioning groove 402 and the positioning pin 7, the guide body 401 is prevented from sliding out of the arc groove 301, improving the use convenience; and by setting positioning grooves 402 with different radian, the adjusted angle of the quick-change jaw 4 is controlled, so as to meet the clamping requirements of workpieces with different tapers.

[0044] An avoidance area 303 is provided on one side of the quick-change base 3 close to the quick-change jaw 4. When the quick-change jaw 4 moves along the arc groove 301, interference between the quick-change jaw 4 and the quick-change base 3 is avoided, the range of the self-adaptive adjustment angle of the quick-change jaw 4 is increased, and the clamping requirements of workpieces with different tapers are met.

[0045] A receiving groove 101 is provided in the middle of the positioning table. A pit 302 is provided in the middle of the lower end surface of the quick-change base 3. A protrusion is provided at the end of the pull rod 6, and the protrusion includes an arc end and a flat end. The arc end is arranged in the pit 302, and the flat end is arranged in the receiving groove 101. When the adjusting rod 5 drives the pull rod 6 to move, the pull rod 6 drives the quick-change base 3 and the quick-change jaw 4 to move through the cooperation of the protrusion and the pit 302, realizing the quick replacement of the quick-change jaw 4, ensuring the stability of the installation of the quick-change base 3, with simple connection, convenient disassembly, and improved disassembly efficiency.

[0046] The arc-shaped groove 301 and the cross-section of the guiding body 401 are in a dovetail shape, ensuring that the quick-change jaw 4 slides stably along the quick-change base 3, avoiding shaking and ensuring the firm clamping of the workpiece.

[0047] At least one arc-shaped groove 301 is provided, and the number of the quick-change jaws 4 and the positioning pins 7 corresponds to the number of the arc-shaped grooves 301. By providing a plurality of quick-change jaws 4, the clamping requirements of a plurality of workpieces with the same or different tapers are met, improving the convenience and versatility of use, reducing the number of jaws, and lowering the processing cost. In this embodiment, one arc-shaped groove 301 is provided.

[0048] Embodiment 2

[0049] As Figures 8 to 9 , different from Embodiment 1 is the number of the arc-shaped grooves 301.

[0050] In this embodiment, two arc-shaped grooves 301 are provided on the quick-change base 3, and each arc-shaped groove 301 is correspondingly installed with a quick-change jaw 4 and a positioning pin 7. The positioning pin 7 can prevent the quick-change jaw 4 from sliding out of the arc-shaped groove 301, enabling the quick-change jaw 4 to move smoothly within the arc-shaped groove 301. A pit 302 is provided on the quick-change base 3 between the two arc-shaped grooves 301, so that the pull rod 6 drives the quick-change base 3 to move through the pit 302. By providing two quick-change jaws 4, the simultaneous clamping of two workpieces is achieved, improving the clamping efficiency and simultaneously meeting the clamping requirements of workpieces with a smaller taper, enhancing the convenience of operation.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-functional bench vice with a quick-change jaw, comprising a movable jaw body (1), a fixed jaw body (2), a lead screw (9) and a handle (14). The movable jaw body (1) is slidably mounted on the fixed jaw body (2). One end of the lead screw (9) is connected to the handle (14), and the other end passes through the movable jaw body (1) and is threadedly connected to the fixed jaw body (2). A fixed jaw (8) is provided on the fixed jaw body (2), and it is characterized in that, A quick-change component and a movable jaw component are mounted on the movable jaw body (1). The quick-change component includes an adjusting rod (5) and a pull rod (6). The adjusting rod (5) is provided with an external thread and an internal thread. The adjusting rod (5) is mounted on the movable jaw body (1) through the external thread, and one end of the adjusting rod (5) is connected to the pull rod (6) through the internal thread. The helix directions of the external thread and the internal thread are opposite. The other end of the pull rod (6) passes through the movable jaw body (1) and is clamped on the movable jaw component, and the movable jaw component corresponds to the fixed jaw (8).

2. The multi-functional bench vice according to claim 1, characterized in that, The movable jaw component includes a quick-change base (3) and a quick-change jaw (4). A positioning table is provided on the movable jaw body (1), and the quick-change base (3) is mounted on the positioning table. An inwardly concave arc-shaped groove (301) is provided on the quick-change base (3). One side of the quick-change jaw (4) is provided with a working surface corresponding to the fixed jaw (8), and the other side is provided with an outwardly protruding guide body (401). The guide body (401) is slidably arranged in the arc-shaped groove (301), and the movable jaw component is used for adaptively adjusting the angle between the quick-change jaw (4) and the fixed jaw (8).

3. The multi-functional bench vice according to claim 2, characterized in that, The movable jaw component further includes a positioning pin (7). A positioning hole corresponding to the positioning pin (7) is provided on the quick-change base (3). One end of the positioning pin (7) is mounted on the movable jaw body (1), and the other end is inserted into the positioning hole.

4. The multi-functional bench vice according to claim 3, wherein A positioning groove (402) is provided on the guide body (401), and the positioning groove (402) extends along the guide body (401). The positioning pin (7) passes through the positioning hole and is inserted into the positioning groove (402).

5. The multi-functional bench vice according to claim 2 or 4, characterized in that, A relief area (303) is provided on one side of the quick-change base (3) close to the quick-change jaw (4).

6. The multi-functional bench vice according to claim 2, wherein, A receiving groove (101) is provided on the positioning table. A pit (302) is provided on the lower end surface of the quick-change base (3). A protrusion is provided at the end of the pull rod (6), and the protrusion is arranged in the receiving groove (101) and the pit (302).

7. The multi-functional bench vice according to claim 2, characterized in that, The cross-sections of the arc-shaped groove (301) and the guide body (401) are in a dovetail shape.

8. The multi-functional bench vice according to claim 4, characterized in that, At least one arc-shaped groove (301) is provided, and the number of the quick-change jaws (4) and the positioning pins (7) corresponds to the number of the arc-shaped grooves (301).

9. The multi-functional bench vice according to claim 1, characterized in that, An internal hexagon is provided at the end of the adjusting rod (5). The external thread of the adjusting rod (5) is a left-handed thread, and the internal thread is a right-handed thread.

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