High-precision positioning clamp for thin-wall shell

Abstract

The utility model discloses a high-precision positioning fixture of a thin-wall shell, which comprises a clamping column, a sleeving column on the same axis is formed on the clamping column, the clamping column and the sleeving column are concentrically distributed, the sleeving column is used for sleeving a workpiece, a plurality of positioning grooves are formed in the axial direction of the sleeving column, and the positioning grooves are used for positioning the workpiece. A positioning groove is formed in the surface of the sleeving column, a through hole is formed in the axial end face of the positioning groove, the through hole is aligned with a round hole in a workpiece, a bolt is inserted into the through hole, and the workpiece is connected to the sleeving column. The workpiece is fixedly arranged on the sleeving column in a sleeving manner, and the sleeving column is used for supporting the inner wall of the workpiece, so that the machining stability and precision requirements on the outer wall of the workpiece are ensured, and the workpiece does not deform during machining.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the fixture of thin -walled part, concretely is high accuracy positioning fixture of thin -walled shell. BACKGROUND

[0002] The processing of the thin -walled cylindrical part generally utilizes the machine tool finishing forming, and because the workpiece has the feature of thin -walled, when clamping the workpiece, pressure is applied on the thin -walled and causes the workpiece to deform, cannot guarantee the processing accuracy of the workpiece, and therefore the positioning fixture matched with the workpiece is designed, the inside support of the cylindrical workpiece is passed through, the thin -walled processing of the workpiece is more stable, is not easy to deform, and the processing accuracy is improved. SUMMARY

[0003] The utility model discloses a high-precision positioning fixture of thin-walled shell, by the workpiece of fixedly arranged on the sleeve joint column, utilize the inner wall support of sleeve joint column to workpiece, guarantee the stability and precision requirement of the processing of workpiece outer wall, make workpiece processing not to deform.

[0004] The utility model provides the following technical scheme: high-precision positioning fixture of thin-walled shell, including clamping column, the clamping column is formed with on the same axis sleeve joint column, clamping column and sleeve joint column are concentric distribution, sleeve joint column is used for sleeve joint workpiece on, the axial direction of sleeve joint column is set up with multiple positioning slots, and the positioning slot sets up on the surface of sleeve joint column, the positioning slot sets up the through -hole on the end face of axial direction, and the through -hole is aligned with the round hole on workpiece, and the bolt is inserted in the through -hole, and workpiece is connected on sleeve joint column.

[0005] In an embodiment, the diameter of the sleeve joint column is greater than the diameter of the clamping column, and the through hole is located on the outside of the clamping column.

[0006] In another embodiment, the diameter of the sleeve joint column is less than the diameter of the clamping column, and the through hole is formed through the clamping column.

[0007] In order to position and install the workpiece, the positioning slot is formed downward from the top surface of the sleeve joint column, the bottom surface of the positioning slot is located on the sleeve joint column, the cross section of the positioning slot is in the form of a circular arc, and the two sides of the positioning slot are formed with outward fillets.

[0008] In order to match the workpiece, the number of positioning slots is three.

[0009] In order to completely fit the inner wall of the workpiece, the top surface of the sleeve joint column is formed with a chamfer.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are that: through the forming sleeve joint column, the workpiece is sleeved on the sleeve joint column, and the workpiece is fixed through the bolt or screw rod, and through the machine tool clamping clamping column, the sleeve joint column is located at the machining side of the machine tool, further facilitating the machining of the outer wall of the workpiece, and the forming precision and stability of the workpiece are improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.In the drawings:

[0012] Figure 1 is the explosion view of the embodiment one of the utility model and the workpiece;

[0013] Figure 2 is the perspective view of the embodiment one of the utility model;

[0014] Figure 3 is the Figure 2 partial enlarged schematic view of the area A;

[0015] Figure 4 is the perspective view of the embodiment two of the utility model;

[0016] In the drawing: 11, clamping column;12, sleeve joint column;13, positioning groove;14, through hole;15, round corner;16, chamfer;2, workpiece. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0018] Embodiment one

[0019] Please refer to Figure 1 and Figure 2This utility model provides a technical solution: a high-precision positioning fixture for thin-walled shells, including a clamping column 11, which is used to be clamped by a machine tool. A connecting column 12 is formed on the clamping column 11 along the same axis. The clamping column 11 and the connecting column 12 are concentrically distributed. The connecting column 12 is used to hold a workpiece 2. Multiple positioning grooves 13 are formed in the axial direction of the connecting column 12. The positioning grooves 13 are formed on the surface of the connecting column 12. A through hole 14 is formed on the axial end face of the positioning groove 13. The through hole 14 is aligned with a circular hole on the workpiece 2. A bolt or screw is inserted into the through hole 14. The workpiece 2 is connected to the connecting column 12 by a nut, thereby fixing the workpiece 2 on the connecting column 12. The clamping column 11 is clamped by the machine tool's fixture, so that the outer wall of the workpiece 2 is wrapped around the connecting column 12, facilitating the machine tool's processing of the outer wall of the workpiece 2, ensuring that the thickness of the workpiece 2 meets production requirements, improving precision, and preventing deformation of the workpiece 2.

[0020] The diameter of the sleeve post 12 is larger than the diameter of the clamping post 11, and the through hole 14 is located on the outside of the clamping post 11, which shortens the length of the bolt or screw, reduces the length of the opening, and reduces the processing difficulty.

[0021] like Figure 3 As shown, the positioning groove 13 is formed downward from the top surface of the sleeve post 12. The positioning groove 13 is easy to process. The bottom surface of the positioning groove 13 is located on the sleeve post 12 and there is a distance between it and the bottom surface of the sleeve post 12. The cross-section of the positioning groove 13 is arc-shaped. Both sides of the positioning groove 13 are formed with outward rounded corners 15. The rounded corners 15 expand the space of the positioning groove 13, making it convenient to insert bolts or screws into the positioning groove 13.

[0022] There are three positioning slots 13. The workpiece 2 is stably connected to the sleeve post 12 through the three positioning slots 13.

[0023] The top surface of the sleeve post 12 is formed with a chamfer 16. The chamfer 16 makes the top surface of the sleeve post 12 fit completely with the inner wall of the workpiece 2, which improves the support force on the inner wall of the workpiece 2 and prevents the workpiece 2 from deforming.

[0024] Example 2

[0025] like Figure 4 As shown, the diameter of the sleeve post 12 is smaller than the diameter of the clamping post 11, and the through hole 14 is opened through the clamping post 11. By passing the bolt or screw through the sleeve post 12 and the clamping post 11, the connection strength between the workpiece 2 and the sleeve post 12 is enhanced. At the same time, the diameter of the clamping post 11 is larger than the diameter of the sleeve post 12, which can protect the fixture during processing and avoid the tool movement error from colliding with the machine tool fixture.

[0026] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A high precision positioning fixture for thin walled enclosures comprising a clamping post, characterized by: The clamping column is formed with a sleeving column on the same axis, the clamping column and the sleeving column are concentrically distributed, the sleeving column is used for sleeving the workpiece, a plurality of positioning grooves are formed in the axial direction of the sleeving column, the positioning grooves are formed on the surface of the sleeving column, a through hole is formed in the end face of the positioning groove in the axial direction, the through hole is aligned with the round hole on the workpiece, a bolt is inserted into the through hole, and the workpiece is connected to the sleeving column.

2. The high precision positioning fixture for thin-walled enclosures of claim 1, wherein: The diameter of the sleeving column is greater than that of the clamping column, and the through hole is located outside the clamping column.

3. The high precision positioning fixture for thin-walled enclosures of claim 1, wherein: The diameter of the sleeving column is smaller than that of the clamping column, and the through hole is formed through the clamping column.

4. The high precision positioning fixture for thin-walled enclosures of claim 1, wherein: The positioning groove is formed downward from the top surface of the sleeving column, the bottom surface of the positioning groove is located on the sleeving column, the cross section of the positioning groove is in the shape of a circular arc, and the two side edges of the positioning groove are formed with outward fillets.

5. The high precision positioning fixture for thin-walled enclosures of claim 1, wherein: The number of the positioning grooves is three.

6. The high precision positioning fixture for thin-walled enclosures of claim 1, wherein: A chamfer is formed on the top surface of the sleeving column.

Images