Cutting technology for thin-wall titanium alloy part

A titanium alloy and process technology, which is applied in the field of cutting technology of thin-walled titanium alloy parts, can solve the problems of no literature, rising temperature in the cutting area, and the cutting edge is not easy to disperse. The effect of avoiding machine vibration

Inactive Publication Date: 2014-12-24
无锡市森信精密机械厂
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  • Abstract
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Problems solved by technology

[0006] (3) The cutting temperature of titanium alloy material is high
The thermal conductivity of titanium alloy materials is lower than that of stainless steel and high-temperature alloys, and the heat dissipation conditions are poor, so that the temperature of the cutting zone rises rapidly. The temperature of the cutting zone is much higher than that of other materials, and the accumulation near the cutting edge is not easy to dissipate, resulting in stress concentration near the tool tip. , tool wear chipping
[0007] (4) The cutting force per unit area of ​​titanium alloy material processing is large
The cutting force per unit area of ​​titanium alloy material processing is large, and the main cutting force is about 20% smaller than that of general structural steel. Due to the short contact length between the tool and the chip, the cutting pressure is concentrated on the small contact area near the cutting edge, so the unit contact The cutting for

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The workpiece material is titanium alloy TC4, the outer circle size Ф46mm tolerance is 0.039mm, the wall thickness is 2mm, the length is 60mm, the tolerance is 0.046mm, the external thread is M50×75-6h, the hole Ф30mm tolerance is 0.021mm, and the hole runout is 0.015mm , the outer circle runout is 0.03mm

[0041]The workpiece is in the shape of a curved thin-walled rotary body, which is processed in the form of turning. Ф46mm outer circle and Ф30mm long and short dimensional accuracy and geometric tolerance requirements are high, so Ф46mm, Ф30mm long and short dimensions and external thread need to be processed in one time for finishing, the positioning reference is Ф42mm hole and end face, double platen form is adopted, and the turning allowance is single The side is 0.5mm, turning in two cycles. During processing, the Ф42mm hole and the end face are the process outer circle as the positioning reference, and the Ф30mm inner end face is pressed first, and the Ф42mm hol...

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Abstract

The invention relates to a cutting technology for a thin-wall titanium alloy part. According to the cutting technology for the thin-wall titanium alloy part, tool materials, angles and cutting factors suitable for machining of titanium alloy materials are selected, the machining durability of tools is improved, the deformation effect of workpieces is reduced remarkably, and the machining quality of the workpieces is improved. A machining result of 1000 workpieces in multiple batches shows that the qualified rate of the workpieces is only 70 percent before the technology is improved, and the qualified rate of the workpieces is increased to about 97 percent after the technology is improved.

Description

technical field [0001] The invention relates to a cutting process for thin-walled titanium alloy parts. Background technique [0002] The specific gravity of titanium is 4.54g / cm3, which is only 58% of steel (7.8g / cm3). The specific strength, specific stiffness, corrosion resistance and bonding performance of titanium alloy are good, the high temperature deformation is small, and the fatigue and creep resistance are also good. . According to statistics, among the components of national defense products, structural parts made of titanium alloy materials account for 90% of the total number of components, and the application of titanium alloys in national defense products is increasing. However, when titanium alloy materials are cut, the tool wears quickly, sticking to the tool is easy to occur, and built-up edge is formed on the tip of the tool. The cutting elements affect the processing quality of the workpiece. [0003] The biggest bottleneck in the processing of titanium ...

Claims

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Application Information

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IPC IPC(8): B23B1/00B23B27/00
CPCB23B1/00B23B27/00B23B2215/64
Inventor 华兆红
Owner 无锡市森信精密机械厂
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