High-precision positioning and clamping mechanism for thin-walled parts

Abstract

The utility model relates to a kind of high-precision positioning and clamping mechanism of thin-walled part, including bottom plate, the center of bottom plate is equipped with accommodating groove, accommodating groove is fixed with vertical gas inflation shaft, the key strip lower end of gas inflation shaft is located in accommodating groove;The upper side of bottom plate is suspended and is fixed with multiple compression components, the compression component includes vertical screw rod, the upper end of screw rod is fixed with knob cap, the lower end of screw rod is rotatably connected with pressing block, the middle part of screw rod is connected with limit block by screw connection, limit block is fixedly connected with bottom plate by connecting component;The diagonal of bottom plate is fixedly connected with corner block.The utility model can realize center positioning, overall positioning and close bottom plate's compression fixed of thin-walled part, the deformation effect of thin-walled part is small in process, make subsequent processing process more smoothly, and the good product rate of machined part is stable.

Description

Technical Field

[0001] This utility model relates to the field of tooling, and in particular to a high-precision positioning and clamping mechanism for thin-walled parts. Background Technology

[0002] When machining thin-walled parts, manual positioning and marking of turning points on the part are crucial, leading to poor machining accuracy. Therefore, tooling or clamping mechanisms are needed to locate these turning points and improve accuracy. Currently, conventional clamping mechanisms typically clamp from the outside inwards, which, while providing centering, can easily cause deformation due to simultaneous inward pressure. This is especially true for plate-shaped parts, where clamping only from the edge can cause the sheet-like part to bulge upwards due to the compressive force. Therefore, suitable tooling for positioning and clamping thin-walled plate-shaped parts is currently lacking. Utility Model Content

[0003] The purpose of this application is to provide a high-precision positioning and clamping mechanism for thin-walled parts, aiming to solve the problems existing in the prior art.

[0004] This application provides a high-precision positioning and clamping mechanism for thin-walled parts, including a base plate. A receiving groove is formed in the center of the base plate, and a vertical air shaft is fixed in the receiving groove. The lower end of the key bar of the air shaft is located in the receiving groove. Multiple clamping components are suspended and fixed above the base plate. Each clamping component includes a vertical threaded rod, a knob cap is fixed to the upper end of the threaded rod, and a pressure block is rotatably connected to the lower end of the threaded rod. A limit block is threadedly connected to the middle of the threaded rod, and the limit block is fixedly connected to the base plate by a connecting component. Corner blocks are fixedly connected at opposite corners on the base plate. The corner blocks are right-angled with concave surfaces facing the direction of the air shaft.

[0005] Furthermore, a wire groove is provided inside the base plate, with one end of the wire groove opening inside the receiving groove and the other end opening on the side of the base plate.

[0006] Furthermore, the connecting assembly includes a connecting rod and a top frame, the top frame being located above the bottom plate, the limiting block being fixed on the top frame, and the top frame being fixedly connected to the bottom plate by a vertical connecting rod.

[0007] Furthermore, the connecting assembly includes a connecting rod and a top frame. The top frame is located above the bottom plate, and the limiting block is fixed on the top frame. The top frame and the bottom plate are fixedly connected by the connecting rod, which is C-shaped.

[0008] Furthermore, the connecting assembly includes a connecting rod, which is C-shaped and bent. One end of the connecting rod is fixedly connected to the limiting block, and the other end is bent outward and fixedly connected to the side of the base plate.

[0009] Furthermore, the number of clamping components is two or four, symmetrically distributed around the air expansion shaft.

[0010] The beneficial effects of this invention are as follows: This invention uses an air shaft to center and fix thin-walled parts from the inside, avoiding deformation caused by external bidirectional forces. Angle blocks limit the angle of the thin-walled parts to achieve overall positioning, preventing the turning point from changing due to rotation of the thin-walled parts on the base plate. The clamping assembly fixes the thin-walled parts to the base plate in the thickness direction, ensuring they are close to the base plate and preventing gaps that could lead to inaccurate turning positions. This invention achieves center positioning, overall positioning, and close clamping fixation of thin-walled parts to the base plate, with minimal deformation during the process, making subsequent processing smoother and resulting in a stable yield rate of machined parts. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the base plate of this utility model.

[0013] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0014] Figure 4 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model.

[0015] In the picture:

[0016] 1. Base plate; 2. Receiving groove; 3. Air shaft; 4. Wire groove; 5. Threaded rod; 6. Knob cap; 7. Pressure block; 8. Limiting block; 9. Corner block; 10. Connecting rod; 11. Top frame. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1

[0019] like Figures 1-2The high-precision positioning and clamping mechanism for thin-walled parts shown includes a base plate 1. A receiving groove 2 is formed at the center of the base plate 1, and a vertical air shaft 3 is fixed within the receiving groove 2. The lower end of the key bar of the air shaft 3 is located within the receiving groove 2. A wire guide groove 4 is formed inside the base plate 1. One end of the wire guide groove 4 is located within the receiving groove 2, and the other end is located on the side of the base plate 1, for accommodating the air tube of the air shaft 3. Multiple clamping assemblies are suspended and fixed above the base plate 1. Each clamping assembly includes a vertical threaded rod 5. A knob cap 6 is fixed to the upper end of the threaded rod 5, and a pressure block 7 is rotatably connected to the lower end of the threaded rod 5. A limit block 8 is threadedly connected to the middle of the threaded rod 5, and the limit block 8 is fixedly connected to the base plate 1 by a connecting assembly. Corner blocks 9 are fixed diagonally on the base plate 1 by screws. The corner blocks 9 can be disassembled and replaced adaptably using screws. The corner blocks 9 are right-angled with a concave surface facing the air shaft 3. The number of clamping components is two or four, symmetrically distributed around the air expansion shaft 3.

[0020] The connecting assembly includes a connecting rod 10 and a top frame 11. The top frame 11 is located above the bottom plate 1. The limiting block 8 is fixed on the top frame 11. The top frame 11 and the bottom plate 1 are fixedly connected by the vertical connecting rod 10.

[0021] In use, a gap exists between the top frame 11 and the base plate 1 to accommodate thin-walled parts. Positioning holes are pre-machined into the thin-walled parts, and these holes are fitted onto the air shaft 3 from top to bottom. The air shaft 3 is then inflated, causing the key bar to bulge outwards and press against the positioning holes, achieving center positioning and clamping fixation of the thin-walled parts. When placing the thin-walled parts, their diagonal sides are positioned in the corner blocks 9, which provide angular positioning. During rough machining, the diameter of the positioning holes must be larger than the diameter of the uninflated air shaft 3 to leave a gap between the positioning holes and the air shaft 3, facilitating the placement and removal of the thin-walled parts.

[0022] Then, rotating the knob cap 6 lowers the threaded rod 5 through the threaded action, causing the pressure block 7 to descend and fit against the surface of the thin-walled part. Rotating the knob cap 6 then presses the pressure block 7 firmly against the surface of the thin-walled part, thus securing it in place. This allows for further processing of the thin-walled part.

[0023] The extension length of the limiting block 8 is not limited. The extension length of the limiting block 8 corresponds to the distance between the pressing assembly and the center of the thin-walled part. The extension lengths of the limiting blocks 8 of multiple pressing assemblies may not be the same. For example, the two symmetrical pressing assemblies may have shorter extension lengths of the limiting blocks 8, so that the pressing assembly is closer to the edge of the thin-walled part and is used to press the edge. The other two symmetrical pressing assemblies may have longer extension lengths of the limiting blocks 8, so that the pressing assembly is closer to the center of the thin-walled part and is used to press the middle.

[0024] When the further processing technology involves opening holes on the surface of thin-walled parts, corresponding slots can be opened on the base plate 1.

[0025] Example 2

[0026] The difference from Embodiment 1 is that the connecting assembly includes a connecting rod 10 and a top frame 11. The top frame 11 is located above the bottom plate 1, and the limiting block 8 is fixed to the top frame 11. The top frame 11 and the bottom plate 1 are fixedly connected by the connecting rod 10, which is C-shaped. Figure 3 As shown. This increases the side dimensions formed by the base plate 1 and the top frame 11, making it easier to fit thin-walled parts.

[0027] Example 3

[0028] The difference from Embodiment 1 is that the connecting assembly includes a connecting rod 10, which is C-shaped. One end of the connecting rod 10 is fixedly connected to the limiting block 8, and the other end is bent outward and fixedly connected to the side of the base plate 1, as shown below. Figure 4 As shown. This can replace the use of the top frame 11, further opening up the space above the base plate 1, which is convenient for subsequent processing.

[0029] The above embodiments are not intended to limit the present invention. Unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention is not limited to the examples above. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention. Furthermore, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

Claims

1. A high-precision positioning and clamping mechanism for thin-walled parts, characterized in that, The device includes a base plate with a centrally located receiving groove. A vertical air shaft is fixed within the receiving groove, and the lower end of the key bar of the air shaft is located within the receiving groove. Multiple clamping assemblies are suspended and fixed above the base plate. Each clamping assembly includes a vertical threaded rod with a knob cap fixed to its upper end and a pressure block rotatably connected to its lower end. A limit block is threadedly connected to the middle of the threaded rod, and the limit block is fixedly connected to the base plate via a connecting assembly. Corner blocks are fixedly connected at opposite corners on the base plate, and the corner blocks are right-angled with concave surfaces facing the direction of the air shaft.

2. The high-precision positioning and clamping mechanism for thin-walled parts according to claim 1, characterized in that, The base plate has a wire groove inside, with one end of the wire groove opening inside the receiving groove and the other end opening on the side of the base plate.

3. The high-precision positioning and clamping mechanism for thin-walled parts according to claim 1, characterized in that, The connecting assembly includes a connecting rod and a top frame. The top frame is located above the bottom plate, and the limiting block is fixed on the top frame. The top frame and the bottom plate are fixedly connected by a vertical connecting rod.

4. The high-precision positioning and clamping mechanism for thin-walled parts according to claim 1, characterized in that, The connecting assembly includes a connecting rod and a top frame. The top frame is located above the bottom plate, and the limiting block is fixed on the top frame. The top frame and the bottom plate are fixedly connected by the connecting rod, which is C-shaped.

5. The high-precision positioning and clamping mechanism for thin-walled parts according to claim 1, characterized in that, The connecting assembly includes a connecting rod, which is C-shaped and bent. One end of the connecting rod is fixedly connected to the limiting block, and the other end is bent outward and fixedly connected to the side of the base plate.

6. The high-precision positioning and clamping mechanism for thin-walled parts according to claim 1, characterized in that, The number of clamping components is two or four, symmetrically distributed around the air expansion shaft.

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