Workpiece clamping tool

Abstract

The utility model discloses a workpiece clamping tool which comprises two rocker arms, one end of each rocker arm is provided with a jacking column used for jacking a workpiece, and the other end of each rocker arm is provided with an opening and closing column used for controlling the rotating motion of the rocker arms. The device further comprises a control rod, a control circular truncated cone is arranged at the end of the control rod, an opening and closing circular truncated cone is arranged at the end of each opening and closing column, the opening and closing circular truncated cones of the two opening and closing columns are aligned, the control circular truncated cones are perpendicular to the two opening and closing circular truncated cones and make contact with the two opening and closing circular truncated cones respectively, and when the control rod extrudes the two opening and closing circular truncated cones, the opening and closing circular truncated cones are opened and closed. And the two opening and closing circular truncated cones are separated outwards, so that the two rocker arms rotate outwards, and the jacking columns rotate inwards to clamp a workpiece. A workpiece is clamped and fixed from the side face, machining of the top face is not affected, manual control clamping is suitable for various box bodies of different specifications and sizes, and convenience and practicability are achieved.

Description

Technical Field

[0001] This utility model relates to a clamping fixture, specifically a workpiece clamping fixture. Background Technology

[0002] When machining a specific box-shaped workpiece, it is necessary to fix the workpiece in place. One end of the top surface of this specific box-shaped workpiece has a notch, which allows the workpiece to be positioned. However, it still needs to be fixed in place. Currently, a pressure plate is used for fixing. If the pressure plate is placed on the side of the notch, the workpiece will wobble and become unstable during machining. If the pressure plate is placed on the other end, it will cover part of the top surface, affecting machining. The fixing position needs to be changed again before machining can continue, which is quite cumbersome. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model provides a workpiece clamping fixture. This utility model clamps and fixes the workpiece from the side without affecting the processing of the top surface. The manual clamping control is adaptable to various sizes and specifications of boxes, making it convenient and practical.

[0004] To achieve the above technical objectives, this utility model adopts the following technical solution: a workpiece clamping fixture, comprising two rocker arms, one end of which is provided with a clamping post for clamping the workpiece, and the other end of which is provided with an opening and closing post for controlling the rotational movement of the rocker arm; it also includes a control rod, the end of which is provided with a control frustum, and the end of the opening and closing post is provided with an opening and closing frustum. The opening and closing frustums of the two opening and closing posts are aligned, and the control frustum is perpendicular to the two opening and closing frustums and contacts the two opening and closing frustums respectively. When the control rod presses the two opening and closing frustums, the two opening and closing frustums separate outward, thereby causing the two rocker arms to rotate outward, and thus causing the clamping post to rotate inward to clamp the workpiece.

[0005] It also includes a support bracket, which is provided with a base crossbar. The middle part of the rocker arm is hinged to the base crossbar by a hinge shaft, so that when one end of the rocker arm is rotated by the control rod, the clamping column at the other end can move closer to each other to clamp the workpiece.

[0006] It also includes a control housing, which is fixed to the support bracket. The control housing has a control hole and a movable hole. The movable hole passes through the control housing and is perpendicular to the movable hole. One end of each of the two opening and closing columns passes through the two ends of the movable hole. When not clamped, the end faces of the two opening and closing frustums can contact each other. The control frustum passes through the control hole.

[0007] The control housing is also fixed with an end cap on the side where the control hole is opened. The control rod is also connected to a stud. The end cap has a threaded hole for the stud to pass through. The stud and the threaded hole are connected by threads. The stud can drive the control rod in and out.

[0008] The other end of the opening and closing column is provided with a threaded section for connection with the rocker arm.

[0009] It also includes a positioning component, which includes a positioning post, a positioning rod, and a pad. The positioning post is fixed to the base plate, and the positioning rod has an elongated hole, which is used to fix the positioning post to the positioning post with a bolt.

[0010] In summary, this utility model achieves the following technical effects:

[0011] This invention features a rotatable rocker arm that opens and closes at one end to open and close at the other end to clamp the workpiece from the side. It also utilizes the lever principle to achieve a very tight clamping effect with a small clamping force. The method of clamping the workpiece from the side does not affect the processing at the top. Attached Figure Description

[0012] Figure 1 It is a workpiece clamping fixture;

[0013] Figure 2 yes Figure 1 A schematic diagram of local decomposition;

[0014] Figure 3 This is a top view of the clamped workpiece 17. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] Example:

[0022] Figure 1 It is a workpiece clamping fixture. Figure 2 yes Figure 1A partially exploded view shows two rocker arms 4, one end of which is provided with a clamping post 11 for clamping the workpiece, and the other end is provided with an opening and closing post 9 for controlling the rotational movement of the rocker arm 4; it also includes a control rod 10, the end of which is provided with a control frustum 1001, and the end of the opening and closing post 9 is provided with an opening and closing frustum 901. The opening and closing frustums 901 of the two opening and closing posts 9 are aligned, and the control frustum 1001 is perpendicular to the two opening and closing frustums 901 and contacts the two opening and closing frustums 901 respectively. When the control rod 10 presses the two opening and closing frustums 901, the two opening and closing frustums 901 separate outward, thereby the two rocker arms 4 rotate outward, and the clamping post 11 rotates inward to clamp the workpiece.

[0023] This invention features a rotatable rocker arm that opens and closes at one end to open and close at the other end to clamp the workpiece from the side. It also utilizes the lever principle to achieve a very tight clamping effect with a small clamping force. The method of clamping the workpiece from the side does not affect the processing at the top.

[0024] This utility model sets the control rod 10 and the opening and closing column 9 to be connected by a wedge-shaped inclined surface. The control rod 10 squeezes the two opening and closing columns 9, which can make the opening and closing columns 9 move outward under the action of the wedge-shaped surface, so that the two opening and closing columns 9 separate from each other, and the ends of the two rocker arms 4 separate from each other. The frustum of the control rod 10 and the opening and closing column 9 are respectively set as circular inclined surfaces to facilitate wedge-shaped movement.

[0025] It also includes a support bracket 2, which is provided with a base crossbar 3. The middle part of the rocker arm 4 is hinged to the base crossbar 3 by a hinge shaft 5, so that when one end of the rocker arm 4 is controlled to rotate by the control rod 10, the clamping column 11 at the other end can move closer to each other to clamp the workpiece.

[0026] The hinge shaft 5 of this utility model is not located in the middle of the rocker arm 4, but is biased towards the clamping column 11, so as to reduce the force required by the control rod 10 and increase the clamping force of the clamping column 11 by lever principle.

[0027] It also includes a control housing 6, which is fixed to the elevation bracket 2. The control housing 6 has a control hole 601 and a movable hole 602. The movable hole 602 penetrates the control housing 6. The control hole 601 is perpendicular to the movable hole 602. One end of each of the two opening and closing pillars 9 passes through the two ends of the movable hole 602. When not clamped, the end faces of the two opening and closing frustums 901 can contact each other. The control frustum 1001 passes through the control hole 601.

[0028] This invention utilizes a control housing to install and guide the control column and opening / closing column. The diameter of the movable hole 602 is larger than the diameter of the opening / closing column. Since the opening / closing column rotates in a circle with the hinge shaft 5 as its center, the movable hole must allow sufficient space for its movement. The control column and the opening / closing column are connected by the inclined surface of a frustum, and the opening and closing motion is provided by the mutual movement of the wedge-shaped surfaces, making it convenient to use.

[0029] The control housing 6 is also fixed with an end cap 7 on the side where the control hole 601 is opened. The control rod 10 is also connected with a stud 8. The end cap 7 has a threaded hole for the stud 8 to pass through. The stud 8 is threadedly connected to the threaded hole. The stud 8 can drive the control rod 10 in and out.

[0030] This utility model features a stud 8 that allows for clamping control via a screw-in / screw-out mechanism, which is convenient to control and adaptable to workpieces of different sizes. It also provides excellent control over the opening and closing angles as well as the clamping angle.

[0031] The other end of the opening and closing column 9 is provided with a threaded section 902 for connection with the rocker arm 4.

[0032] It also includes a positioning component, which includes a positioning post 12, a positioning rod 13, and a pad 14. The positioning post 12 is fixed to the base plate 1, and the positioning rod 13 has an elongated hole 1301. The elongated hole 1301 is used to fix the positioning post 12 with a bolt 15.

[0033] Figure 3 This is a top view of the workpiece 17 being clamped. The support bracket 2 is fixed on the base plate 1, and a positioning seat 16 is also provided on the base plate to support the workpiece. The positioning seat 16 is a column or a self-centering seat.

[0034] Working principle:

[0035] Place the workpiece on the positioning seat 16, and place the end pad 14 of the positioning rod 13 against the positioning surface of the workpiece 17, and tighten it with bolts 15.

[0036] Holding the stud 8, screw the control lever 10 inward. The control platform 1001 of the control lever 10 contacts and presses the opening and closing platform 901 of the opening and closing column 9, causing the opening and closing column 9 to move outward, thereby driving the rocker arm 4 to rotate outward, causing the clamping column 11 to move inward to clamp the side of the workpiece 17. Since the stud 8 does not automatically reverse, it will not automatically loosen after clamping.

[0037] After processing is completed, the stud 8 is reversed, causing the control post 10 to be pulled outward a certain distance. The opening and closing post 9 loses the pressure of the control post 10, and the worker can release the clamping by pushing the clamping ends of the two rocker arms outward.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A workpiece clamping fixture, characterized in that: The device includes two rocker arms (4), one end of which is provided with a clamping column (11) for clamping the workpiece, and the other end is provided with an opening and closing column (9) for controlling the rotational movement of the rocker arms (4); it also includes a control rod (10), the end of which is provided with a control frustum (1001), and the end of the opening and closing column (9) is provided with an opening and closing frustum (901). The opening and closing frustums (901) of the two opening and closing columns (9) are aligned. The control frustum (1001) is perpendicular to the two opening and closing frustums (901) and contacts the two opening and closing frustums (901) respectively. When the control rod (10) presses the two opening and closing frustums (901), the two opening and closing frustums (901) separate outward, thereby the two rocker arms (4) rotate outward, thereby the clamping column (11) rotates inward to clamp the workpiece.

2. The workpiece clamping fixture according to claim 1, characterized in that: It also includes a support bracket (2), which is provided with a base crossbar (3). The middle part of the rocker arm (4) is hinged to the base crossbar (3) by a hinge shaft (5), so that when one end of the rocker arm (4) is controlled to rotate by the control rod (10), the clamping column (11) at the other end can move closer to each other to clamp the workpiece.

3. The workpiece clamping fixture according to claim 1, characterized in that: It also includes a control shell (6), which is fixed to the support bracket (2). The control shell (6) has a control hole (601) and a movable hole (602). The movable hole (602) passes through the control shell (6). The control hole (601) is perpendicular to the movable hole (602). One end of the two opening and closing columns (9) passes through the two ends of the movable hole (602). When not clamped, the end faces of the two opening and closing frustums (901) can contact each other. The control frustum (1001) passes through the control hole (601).

4. The workpiece clamping fixture according to claim 3, characterized in that: The control housing (6) is also fixed with an end cap (7) on the side where the control hole (601) is opened. The control rod (10) is also connected with a stud (8). The end cap (7) has a threaded hole for the stud (8) to pass through. The stud (8) is connected to the threaded hole by a thread. The stud (8) can drive the control rod (10) in and out.

5. The workpiece clamping fixture according to claim 4, characterized in that: The other end of the opening and closing column (9) is provided with a threaded section (902) for connection with the rocker arm (4).

6. The workpiece clamping fixture according to claim 1, characterized in that: It also includes positioning components, which include positioning pins (12), positioning rods (13), and pads (14). The positioning pins (12) are fixed to the base plate (1), and the positioning rods (13) have elongated holes (1301). The elongated holes (1301) are used to fix the positioning pins (12) with bolts (15).

Images