Turning method and turning tool

A turning tool and turning technology, applied in the target field, can solve the problems of gnawing and squeezing the cutting surface, increasing the difficulty of cutting the outer surface of niobium targets or niobium alloy targets, etc.

Inactive Publication Date: 2014-06-18
NINGXIA ORIENT TANTALUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the inner hole processing of the niobium target or niobium alloy target is completed, the outer surface needs to be cut. Due to the high viscosity of niobium and its alloys, the chip sticking to the knife during the cutti...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1. Set the diameter Φ 外The niobium tubular target with a diameter of 160mm and a length of 1500mm is clamped on a horizontal lathe, and the inner hole is used as a reference to align and then turn the outer circle, followed by rough machining and finishing machining. The cutting tool material YG6 is used in the turning process. ;The rake angle (γ) of the turning tool is 30°~40°, and the rear angle (α) is 8°~14°; It is best at 60°, the secondary deflection angle is 45°~60°; the blade inclination angle (λ) is 10°~15°, and the radius of the tool nose arc (R) is 0.4mm; The cutting depth is 0.25mm / rev, the cutting depth is 2mm, and the cutting speed is 40m / min; when finishing, the feed rate is 0.15mm / rev, the cutting depth is 0.8mm, and the cutting speed is 60m / min. Φ of the niobium tubular target after final turning 外 155±0.1mm, Φ 内 is 125±0.15mm, and the length is 1413±1mm. Surface roughness Ra≤2.0μm;

[0032] Step 2: Polish the outer surface of the above proces...

Embodiment 2

[0034] Step 1. Set the diameter Φ 外 160mm and 1900mm in length, the finished rotary coated niobium target is mounted on a horizontal lathe, and the inner hole is used as the reference for alignment, then the outer circle is turned, and the rough machining and finishing are carried out in turn, and the cutting tool material is selected during the turning process. YG8; the rake angle γ of the tool is 25°~35°, and the rear angle α is 8°~15°; the main declination angle It is best at 60°, the secondary deflection angle is 45°~60°; the blade inclination angle λ is 15°~20°, the radius R of the tool nose arc is 0.4mm; when rough machining, the feed rate is 0.3mm / Turn, the cutting depth is 5mm, the cutting speed is 40m / min; when finishing, the feed rate is 0.2mm / rev, the cutting depth is 1.2mm, and the cutting speed is 60m / min. Φ of the niobium tubular target after final turning 外 155±0.1mm, Φ 内 125±0.15mm, length 1815±1mm, surface roughness Ra≤1.8μm;

[0035] Step 2: Polish the ...

Embodiment 3

[0037] Step 1. Set the diameter Φ 外 160mm, 2560mm in length, the finished rotary coated niobium target is mounted on a horizontal lathe, and the inner hole is used as the reference for alignment, then the outer circle is turned, and the rough machining and finishing are carried out in sequence. The cutting tool material is selected during the turning process. YG3; the rake angle γ of the tool is 20°~30°, and the back angle α is 8°~12°; the main declination angle It is best at 45°, the secondary deflection angle is 60°~90°; the blade inclination angle λ is 18°~25°, the radius of the tool nose arc is 0.4mm for rough turning; when roughing, the feed rate is 0.25~0.3mm / rotation, the cutting depth is 2~5mm, the cutting speed is 40m / min; when performing finishing machining, the feed rate is 0.15~0.2mm / rotation, the cutting depth is 0.8~1.2mm, the cutting The speed is 60m / min. Φ of the niobium tubular target after final turning 外 155±0.1mm, Φ 内 125±0.15mm, length 1815±1mm, surfa...

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Abstract

The invention provides a turning method. The method comprises the following step: turning the outer surface of a niobium alloy target material or a niobium alloy target material by adopting a turning tool, wherein the front angle of the turning tool is 20-40 degrees, the rear angle is 4-15 degrees, the main deflection angle is 45-60 degrees, the auxiliary deflection angle is 45-90 degrees, and the blade inclination angle is 10-25 degrees. By selecting the front angle, rear angle, main deflection angle, auxiliary deflection angle and blade inclination angle of the turning tool, cuttings can be discharged from processed surfaces, so that the cuttings are prevented from sticking to the tool, and the cutting difficulty is lowered. The invention further provides a turning tool. The front angle of the turning tool is 20-40 degrees, the rear angle is 4-15 degrees, the main deflection angle is 45-60 degrees, the auxiliary deflection angle is 45-90 degrees, and the blade inclination angle is 10-25 degrees.

Description

technical field [0001] The invention relates to the technical field of targets, in particular to a turning method and a turning tool. Background technique [0002] Turning is a method in which the workpiece is clamped on a lathe, and the workpiece is cut by using the rotation of the workpiece relative to the tool. Turning is the most basic and common cutting method, which occupies a very important position in production. The turning tool is one of the most widely used tools in the turning process. The working part of the turning tool is the part that generates and processes chips, including structural elements such as the blade, the structure that breaks or rolls up chips, the space for chip removal or chip storage, and the passage of cutting fluid. The cutting part of the turning tool is composed of the main cutting edge, the auxiliary cutting edge, the rake face, the main flank face, the auxiliary flank face and the tool nose angle. The correct selection of turning tool...

Claims

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Application Information

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IPC IPC(8): B23B27/00B23B1/00
CPCB23B27/005B23B1/00
Inventor 汪凯李桂鹏郭从喜张国军张春恒李兆博任萍
Owner NINGXIA ORIENT TANTALUM IND
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