Closing and spinning clamping tool for large-diameter long cylindrical part

Abstract

The utility model provides a large-diameter long cylindrical part closing-in spinning clamping tool. The large-diameter long cylindrical part closing-in spinning clamping tool comprises a sleeve body, an elastic ring, a pressing flange and a positioning seat. The positioning seat is mounted on a machine tool main shaft through a screw; an inner hole is formed in the sleeve body, the elastic ring is arranged in the inner hole in a sleeved mode, the conical surface of the left end of the elastic ring is matched with the conical surface of the inner hole of the sleeve body, and the conical surface of the right end of the elastic ring is matched with the conical surface of the pressing flange. A positioning table at the left end of the pressing flange is matched with an inner hole of the sleeve body, and the right end of the pressing flange is fixedly connected with the sleeve body through a screw. The left conical surface and the right conical surface are extruded to move and shrink so as to achieve the clamping purpose, and the tool is simple in structure, high in mounting and adjusting precision and stable and reliable in clamping.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining, especially relates to a large-diameter long cylindrical part neck-in spinning clamping tool. BACKGROUND

[0002] In the existing neck-in spinning process, due to the fact that internal support cannot be adopted, the clamping of the part is usually relied on external chuck. In order to improve the stiffness of the pipe and ensure the accuracy in the spinning process, the clamping position usually needs to be as close as possible to the neck-in end of the part. Therefore, the part needs to be placed in the machine tool spindle or the tooling inside. However, the hollow diameter of the machine tool spindle of the existing spinning machine tool is usually small, which cannot meet the built-in requirement of the large-diameter long cylindrical part. In addition, in the spinning process, the part is subjected to the extrusion force of the spinning wheel, generating a large radial force, axial force and torque, which puts higher requirements on the clamping stability of the clamping tool. SUMMARY

[0003] Based on the above problems, the purpose of the utility model is to provide a large-diameter long cylindrical part neck-in spinning clamping tool.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0005] A large-diameter long cylindrical part neck-in spinning clamping tool, comprising a sleeve body, an elastic ring, a compression flange and a positioning seat; the positioning seat is installed on the machine tool spindle through a screw; the sleeve body is provided with an inner hole, the elastic ring is sleeved in the inner hole, the left end taper surface of the elastic ring is matched with the inner hole taper surface of the sleeve body, and the right end taper surface of the elastic ring is matched with the taper surface of the compression flange; the left end positioning table of the compression flange is matched with the inner hole of the sleeve body, and the right end of the compression flange is fixedly connected with the sleeve body through a screw.

[0006] As a preferred mode, the sleeve body is connected with the machine tool spindle through a screw.

[0007] As a preferred mode, the compression flange is further connected with a lifting ring.

[0008] As a preferred mode, the stepped outer circle of the positioning seat is matched with the left end inner hole of the part.

[0009] The utility model has the advantages of:

[0010] The utility model adopts the left and right taper surfaces to achieve the purpose of clamping by extrusion and movement of the diameter, and the tooling structure is simple, the installation and adjustment accuracy is high, and the clamping is stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an assembly diagram of the utility model;

[0012] Figure 2The three-dimensional schematic diagram of the sleeve body of the utility model;

[0013] Figure 3 The schematic diagram of the elastic ring of the utility model;

[0014] Figure 4 The schematic diagram of the compression flange of the utility model

[0015] Among them, 1 is a lifting ring; 2 is a sleeve body; 3 is an elastic ring; 4 is a compression flange; 5 is a positioning seat; 6 is a machine tool spindle; 7 is a part. DETAILED DESCRIPTION

[0016] The utility model will be further explained in detail in combination with the drawings.

[0017] Embodiment:

[0018] As Figures 1-4 shown, a large-diameter long cylindrical part necking spinning clamping tool, including sleeve body 2, elastic ring 3, compression flange 4, positioning seat 5, the positioning seat 5 is installed on the machine tool spindle 6 through screw, the stepped outer circle of positioning seat 5 is matched with the left end inner hole of part 7, ensures the accurate positioning of part 7, the sleeve body 2 is equipped with inner hole, this sleeve body 2 is connected with machine tool spindle 6 through screw, ensures the stability in the clamping process, the elastic ring 3 is set in the outside of part 7, the left end taper surface of elastic ring 3 is matched with the taper surface of sleeve body 2 inner hole, the right end taper surface of elastic ring 3 is matched with the taper surface of compression flange 4, the function of elastic ring 3 is to apply uniform clamping force through compression flange 4, the compression flange 4 is located in the outside of part 7, the compression flange 4 is also connected with lifting ring 1, to facilitate the installation of compression flange 4, the left end positioning platform of compression flange 4 is matched with sleeve body 2 inner hole, the right end of compression flange 4 is fixedly connected with sleeve body 2 through screw, ensures the stable transmission of clamping force.

[0019] After installation, the lever method is used to tighten the face screw of compression flange 4, with the screw compression, the elastic ring 3 is pressed from both sides by taper surface, then the diameter is reduced, and part 7 is compressed, then the gap between the left end of part 7 and positioning seat 5 is checked by using plug gauge, then the outer circle runout of the right end of part 7 is detected by using dial gauge, if the runout is larger, the runout of part 7 can be reduced by adjusting screw.

[0020] The above embodiments of the utility model are only examples for illustrating the utility model, and are not the limitation of the implementation mode of the utility model. For ordinary skilled person in the art, other different forms of changes and variations can be made on the basis of the above description. Here, all the implementation modes cannot be exhausted. Any obvious changes or variations derived from the technical scheme of the utility model still belong to the protection scope of the utility model.

Claims

1. A large diameter long cylindrical part necking spinning clamping tool, characterized in that: Including sleeve body, elastic ring, compression flange, positioning seat; The positioning seat is installed on the machine tool spindle through screws; The sleeve body is provided with an inner hole, the elastic ring sleeve is arranged in the inner hole, the left end taper surface of the elastic ring is matched with the taper surface of the inner hole of the sleeve body, and the right end taper surface of the elastic ring is matched with the taper surface of the compression flange; The left end positioning table of the compression flange is matched with the inner hole of the sleeve body, and the right end of the compression flange is fixedly connected with the sleeve body through screws.

2. The necking spinning clamping tool for large-diameter long cylindrical parts according to claim 1, characterized in that: The sleeve body is connected with the machine tool spindle through screws.

3. The necking spinning clamping tool for large diameter long cylindrical part according to claim 1, characterized in that: The compression flange is further connected with a lifting ring.

4. The necking spinning clamping tool for large diameter long cylindrical part according to claim 1, characterized in that: The stepped outer circle of the positioning seat is matched with the left end inner hole of the part.

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