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Method for processing spherical closing-in of thin-wall alloy steel delivery tube and special-purpose hob cutter

A technology of alloy steel and hob, applied in the field of mechanical processing, can solve the problems of high price and increase manufacturing cost, and achieve the effect of reducing processing cost

Active Publication Date: 2009-07-15
JIANGXI CHANGHE AVIATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spherical end of the catheter is processed by special spinning equipment at home and abroad, and the special spinning equipment is expensive, which greatly increases the manufacturing cost

Method used

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  • Method for processing spherical closing-in of thin-wall alloy steel delivery tube and special-purpose hob cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. Processing outer diameter D=25.4mm catheter spherical closing, wall thickness 1mm, the section arc radius r=12.8mm of the working surface 5 of the roller 2 of the special-purpose hob used.

[0021] The processing steps are:

[0022] 1. Clamping; clamp one end of the pipe to be processed on the lathe chuck, and the extension length is 100mm;

[0023] 2. Tool setting; make the rear edge A of the arc working surface of the special hob roller be located at the position 12mm behind the port of the pipe material to be processed;

[0024] 3. Heating the pipe material; use an acetylene gas torch to heat the end of the pipe material to be processed, the length of the heating area is 20mm, and the heating temperature is 920°C;

[0025] 4. Vertical spinning; the speed of the lathe is 550r / min, the total amount of feed is 5mm, and the feed speed is 0.08mm / r;

[0026] 5. Horizontal spinning; the total amount of feed is 0.4D, the lathe speed is 550r / min, the feed speed ...

Embodiment 2

[0027] Example 2. Processing outer diameter D=28mm catheter spherical closing, wall thickness 1.5mm, the section arc radius r=13.9mm of the working surface 5 of the roller 2 of the special-purpose hob used.

[0028] The processing steps are:

[0029] 1. Clamping; clamp one end of the pipe to be processed on the lathe chuck, and the extension length is 110mm;

[0030] 2. Tool setting; make the rear edge A of the arc working surface of the special hob roller be located at the position 13mm behind the port of the pipe material to be processed;

[0031] 3. Heating the pipe material; use the induction coil to heat the end of the pipe material to be processed, the length of the heating area is 22mm, and the heating temperature is 960°C;

[0032] 4. Vertical spinning; the speed of the lathe is 500r / min, the total amount of feed is 6mm, and the feed speed is 0.10mm / r;

[0033] 5. Horizontal spinning; the total amount of feed is 0.45D, the lathe speed is 500r / min, the feed speed is ...

Embodiment 3

[0034] Example 3. Processing outer diameter D=22mm catheter spherical closing, wall thickness 0.8mm, the section arc radius r=11.15mm of the working surface 5 of the roller 2 of the special-purpose hob used.

[0035] The processing steps are:

[0036] 1. Clamping; clamp one end of the pipe to be processed on the lathe chuck, and the extension length is 90mm;

[0037] 2. Tool setting; make the rear edge A of the arc working surface of the special hob roller be located at the position 11mm behind the port of the pipe material to be processed;

[0038] 3. Heating the pipe material; use an acetylene gas torch to heat the end of the pipe material to be processed, the length of the heating area is 15mm, and the heating temperature is 980°C;

[0039] 4. Vertical spinning; the speed of the lathe is 600r / min, the total amount of feed is 5mm, and the feed speed is 0.12mm / r;

[0040] 5. Horizontal spinning; the total amount of feed is 0.5D, the lathe speed is 600r / min, the feed speed ...

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Abstract

The invention belongs to the mechanical processing technique and relates to an improved method for processing a thin-wall alloy steel pipeline spherical necking. The method is characterized in that a common lathe and a special hobbing cutter are used for processing the pipeline spherical necking through a rotary extrusion method, and the method adopts the processing following steps of clamping, tool setting, pipe heating, vertical rotary extrusion and horizontal rotary extrusion. The special hobbing cutter is characterized in that working surfaces (5) with the circular-arc cross sections are respectively arranged at two sides of a rolling wheel (2), and are connected with the lateral side and the cylindrical surface of the rolling wheel. In the invention, the common lathe is used for processing; thereby the processing cost is greatly reduced.

Description

technical field [0001] The invention belongs to mechanical processing technology and relates to the improvement of the method for processing the spherical end of thin-walled alloy steel conduit. Background technique [0002] In a cooperation project of a helicopter, there are several kinds of struts with different specifications whose pipe ends are shrunk into a spherical shape. The end of the conduit is spun into a spherical shape. The spherical end of the catheter is processed by special spinning equipment at home and abroad, and the special spinning equipment is expensive, which greatly increases the manufacturing cost. Contents of the invention [0003] The purpose of the present invention is to propose a method and a special hob for processing the spherical end of a thin-walled alloy steel conduit that can greatly reduce the manufacturing cost. [0004] The technical solution of the present invention is: the method for processing the spherical end of a thin-walled a...

Claims

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Application Information

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IPC IPC(8): B21D41/04
Inventor 夏琦李安刘国泰王栋林潘建定程国祥
Owner JIANGXI CHANGHE AVIATION IND
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