Positioning tool for parts with complex shapes

Abstract

The utility model relates to the technical field of positioning tools, in particular to a positioning tool for parts with complex shapes, which comprises a positioning platform and two supporting pieces, the supporting pieces are arranged at the top end of the positioning platform, the number of the supporting pieces is two, and one side of each supporting piece is provided with an adjustable positioning mechanism; the positioning mechanism comprises two clamping pieces, a sliding block is rotationally installed at one end of each clamping piece, and a control mechanism used for controlling the clamping pieces to rotate and stop is arranged between the sliding blocks and the clamping pieces. Through rotation and position adjustment of the clamping piece in the adjustable positioning mechanism, the fulcrum position of the part can be accurately changed. Compared with a traditional tool in which the shape of the end is directly changed, the tool part does not need to be replaced or transformed, the tool can be rapidly matched with complex parts with different shapes only through simple operation, the positioning efficiency of the tool is greatly improved, and the debugging time caused by the difference of the shapes of the parts is shortened.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a positioning tooling for parts with complex shapes. Background Technology

[0002] In modern manufacturing, with the diversification of product functions and the increasing complexity of structures, the application of parts with complex shapes is becoming more and more widespread. These parts often have irregular curved surfaces, special protrusions or recesses, and require precise positioning fixtures during the processing and manufacturing process to ensure machining accuracy and product quality.

[0003] However, most existing positioning fixtures are designed for parts with regular shapes, and have many shortcomings when dealing with parts with complex shapes. On the one hand, the positioning end shape of traditional fixtures is fixed. If different shaped parts are to be adapted, it is usually necessary to replace or modify the fixture components, which is not only cumbersome and time-consuming, but also increases production costs. On the other hand, when faced with the diverse shapes of complex parts, traditional fixtures are difficult to adjust the positioning fulcrum accurately, resulting in low part positioning efficiency and easy positioning deviations. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a positioning fixture for parts with complex shapes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a positioning fixture for a complex-shaped part, including a positioning platform and a support component. The top of the positioning platform is provided with a support component, and two support components are arranged opposite each other. An adjustable positioning mechanism is provided on one side of each of the two support components.

[0007] The positioning mechanism includes clamping members, and two clamping members are provided. A slider is rotatably mounted on one end of each clamping member. A control mechanism for controlling the rotation and stopping of the clamping members is provided between the slider and the clamping member. The slider is slidably mounted on the inner wall of a slide groove, which is opened on the side wall of a support member. A lead screw passes through the inner wall of the slider, and the sliders are symmetrically arranged on the outer wall of the lead screw.

[0008] Furthermore, the control mechanism includes a rotating shaft embedded in the inner wall of the clamping member and passing through the slider, positioned above the slider. A ratchet is mounted on the outer wall of the rotating shaft positioned above the slider. The rotating shaft is slidably connected to the ratchet and the slider. A pawl is provided on one side of the ratchet. A support seat is rotatably mounted on the side of the pawl away from the ratchet. The support seat is fixedly mounted on the top of the slider. A spring is provided between the side wall of the support seat and the side wall of the pawl.

[0009] Furthermore, the threads on the outer wall of the lead screw are in opposite directions and symmetrical about the midpoint of the support.

[0010] Furthermore, one side of the clamping member is provided with anti-slip texture.

[0011] Furthermore, a second handle is provided at the top of the pawl.

[0012] Furthermore, one end of the lead screw passes through the groove and extends to one side of the support member, and a first handle is fixedly installed at the end of the lead screw.

[0013] This invention presents a positioning fixture for complex-shaped parts, which offers the following advantages: By adjusting the rotation and position of the clamping components in the adjustable positioning mechanism, the fulcrum position of the part can be precisely changed. Compared to traditional fixtures that directly alter the end shape, this design eliminates the need to replace or modify fixture components. It allows for quick adaptation to complex parts with different shapes through simple operation, significantly improving the positioning efficiency of the fixture and reducing debugging time caused by differences in part shape. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall first state structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall second-state structure of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged view of A in the middle.

[0017] In the diagram: 1. Positioning platform; 2. Support component; 3. Clamping component; 4. First handle; 5. Lead screw; 6. Slider; 7. Ratchet; 8. Rotating shaft; 9. Support seat; 10. Pawl; 11. Second handle; 12. Slide groove; 13. Threaded rod; 14. Third handle; 15. Connecting block; 16. Spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-3A positioning fixture for a complex-shaped part includes a positioning platform 1 and a support member 2. The top of the positioning platform 1 is provided with a support member 2, and two support members 2 are arranged opposite each other. An adjustable positioning mechanism is provided on one side of each support member 2. The positioning platform 1 and the support member 2 are both existing technologies, and the specific structure and working principle of the positioning platform 1 and the support member 2 are common knowledge, so they will not be described in detail. In addition, a threaded rod 13 is provided on the side of one of the support members 2 away from the clamping member 3. The threaded rod 13 is rotatably connected to the support member 2 through a bearing. The threaded rod 13 passes through a connecting block 15 and extends to one side of the connecting block 15. The connecting block 15 is fixed to the top of the positioning platform 1 by fasteners. The threaded rod 13 is threadedly connected to the connecting block 15. A third handle 14 is fixedly installed at the end of the threaded rod 13. The support member 2 connected to the threaded rod 13 is slidably installed on the top of the positioning platform 1. The other support member 2 is installed on the top of the positioning platform 1 by fasteners.

[0020] The positioning mechanism includes two clamping members 3. A slider 6 is rotatably mounted on one end of each clamping member 3. A control mechanism for controlling the rotation and stopping of the clamping member 3 is provided between the slider 6 and the clamping member 3. The slider 6 is slidably mounted on the inner wall of the slide groove 12, which serves as a guide and limiter, ensuring that the slider 6 can only slide along the inner wall of the slide groove 12. The slide groove 12 is located on the side wall of the support member 2. A lead screw 5 passes through the inner wall of the slider 6, and the sliders 6 are symmetrically arranged on the outer wall of the lead screw 5. This design allows for adjusting the position of the clamping member 3, thereby adjusting the fulcrum of the clamping member 3 on the part, thus clamping and positioning parts of different shapes. Compared to existing methods that directly change the end shape, the adjustable clamping member 3 provides a more convenient way to position parts of different shapes, making it more convenient to use.

[0021] In summary, by rotating and adjusting the position of the clamping component 3 in the adjustable positioning mechanism, the fulcrum position of the part can be precisely changed. Compared with the traditional tooling method of directly changing the end shape, this design does not require replacement or modification of tooling components. It can quickly adapt to complex parts with different shapes through simple operation, greatly improving the positioning efficiency of the tooling and reducing the debugging time caused by differences in part shape.

[0022] The control mechanism includes a rotating shaft 8, which is embedded in the inner wall of the clamping member 3 and passes through the slider 6, positioned above the slider 6. A ratchet 7 is mounted on the outer wall of the rotating shaft 8 above the slider 6. The rotating shaft 8 is slidably connected to the ratchet 7 and the slider 6. This design allows the rotating shaft 8 to act as a transmission component, driving the clamping member 3 to rotate via the ratchet 7. When the clamping member 3 needs to be replaced, the rotating shaft 8 can be removed, allowing the clamping member 3 to be detached from the slider 6 for replacement. A pawl 10 is provided on one side of the ratchet 7 to limit its position, ensuring it can only rotate in one direction. A support seat 9 is rotatably mounted on the side of the pawl 10 away from the ratchet 7. The support seat 9 is fixedly mounted on the top of the slider 6 to support the pawl 10. A spring 16 is provided between the side wall and the side wall of the pawl 10. In its natural state, the pawl 10 can push against the outer wall of the ratchet 7 and lock into the outer wall of the ratchet 7. Alternatively, when the operator releases the second handle 11, the pawl 10 can naturally return to the state of being locked into the outer wall of the ratchet 7. With this design, when the clamping member 3 is adjusted to open to both sides, the second handle 11 can be rotated to rotate the pawl 10, and then the clamping member 3 can be pulled to open the clamping member 3. When it is necessary to adjust the position of the clamping member 3 to the middle position, it is not necessary to rotate the second handle 11. The clamping member 3 can be pushed directly, which is convenient for operation. In addition, when clamping parts, the clamping member 3 cannot open to both sides due to the obstruction of the pawl 10, thereby achieving the clamping and positioning of the parts.

[0023] The threads on the outer wall of the lead screw 5 are opposite in direction and symmetrical about the midpoint of the support member 2. When the first handle 4 is rotated, the clamping member 3 can be moved in the opposite or opposite direction, thereby adjusting the clamping distance and making it suitable for parts of different sizes. One side of the clamping member 3 is provided with anti-slip texture, which increases the friction between the clamping member 3 and the part during clamping, thereby preventing the part from shifting under the action of force.

[0024] The top of the pawl 10 is provided with a second handle 11. When it is necessary to open the clamping part 3 to both sides, the second handle 11 can be rotated to disengage the pawl 10 from the outer wall of the ratchet 7 for adjustment, which facilitates the adjustment of the position of the pawl 10.

[0025] One end of the lead screw 5 passes through the slide groove 12 and extends to one side of the support member 2. The end of the lead screw 5 is fixedly installed with a first handle 4. This design makes it convenient for operators to operate and adjust the position of the clamping member 3.

[0026] Working method: When parts need to be clamped and positioned, the parts are first placed between the support members 2. Then, the first handle 4 is rotated, which drives the lead screw 5 to rotate. The rotation of the lead screw 5 drives the slider 6 to move. The movement of the slider 6 drives the clamping members 3 to move, thereby adjusting the distance between the clamping members 3 until it is adjusted to a suitable position. Then, the third handle 14 is controlled to rotate, which drives the threaded rod 13 to rotate. The rotation of the threaded rod 13 drives the support member 2 to move, so that the clamping members 3 on the side wall of the support member 2 clamp the parts, thus facilitating subsequent operations.

[0027] When the part is small, the clamping part 3 on one of the support members 2 can be used directly. By rotating the first handle 4, the part can be placed directly between the clamping parts 3 to fix it (at this time, the part only has two support points, and the clamping is not stable enough) and the part can be positioned.

[0028] When the part is short in length and wide in width, it is difficult to fix the clamping member 3 on one support member 2. In this case, the position of the clamping member 3 can be adjusted, and the second handle 11 can be rotated so that the second handle 11 drives the pawl 10 to disengage from the outer wall of the ratchet 7. Then, the clamping member 3 can be pushed so that the clamping member 3 rotates around the rotating shaft 8. The clamping member 3 is rotated to a suitable position, and then the second handle 11 is released. Under the action of the spring 16, the pawl 10 will be pushed to re-embed into the outer wall of the ratchet 7, thereby limiting the ratchet 7 so that the ratchet 7 can only rotate to one side. This ensures that the clamping member 3 can only rotate to the middle position and cannot rotate to the sides. Finally, the above operation is repeated to fix the part between the four clamping members 3 and to position the part.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A positioning fixture for a complex-shaped part, comprising a positioning platform (1) and a support member (2), characterized in that: The top of the positioning platform (1) is provided with a support member (2), and there are two support members (2) arranged opposite each other. One side of each of the two support members (2) is provided with an adjustable positioning mechanism. The positioning mechanism includes a clamping member (3), and two clamping members (3) are provided. A slider (6) is rotatably mounted on one end of the clamping member (3). A control mechanism for controlling the rotation and stopping of the clamping member (3) is provided between the slider (6) and the clamping member (3). The slider (6) is slidably mounted on the inner wall of the slide groove (12). The slide groove (12) is opened on the side wall of the support member (2). A lead screw (5) passes through the inner wall of the slider (6). The sliders (6) are symmetrically arranged on the outer wall of the lead screw (5).

2. The positioning fixture for a complex-shaped part according to claim 1, characterized in that: The control mechanism includes a rotating shaft (8), which is embedded in the inner wall of the clamping member (3) and passes through the slider (6) and is positioned above the slider (6). A ratchet (7) is installed on the outer wall of the rotating shaft (8) above the slider (6). The rotating shaft (8) is slidably connected to the ratchet (7) and the slider (6). A pawl (10) is provided on one side of the ratchet (7). A support seat (9) is rotatably installed on the side of the pawl (10) away from the ratchet (7). The support seat (9) is fixedly installed on the top of the slider (6). A spring (16) is provided between the side wall of the support seat (9) and the side wall of the pawl (10).

3. The positioning fixture for a complex-shaped part according to claim 1, characterized in that: The threads on the outer wall of the lead screw (5) are opposite in direction and symmetrical about the midpoint of the support (2).

4. The positioning fixture for a complex-shaped part according to claim 1, characterized in that: One side of the clamping member (3) is provided with anti-slip texture.

5. A positioning fixture for a complex-shaped part according to claim 2, characterized in that: The pawl (10) is provided with a second handle (11) at its top.

6. A positioning fixture for a complex-shaped part according to claim 1, characterized in that: One end of the lead screw (5) passes through the slide groove (12) and extends to one side of the support (2), and a first handle (4) is fixedly installed at the end of the lead screw (5).

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