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Cutting parameter determining method for combined machining of cutting tool and high-temperature alloy

A high-temperature alloy and cutting tool technology, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as difficult selection of cutting parameters, low cutting efficiency, and tool wear

Inactive Publication Date: 2014-07-16
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for determining cutting parameters during combined processing of cutting tools and high-temperature alloys, in order to solve the problems that it is difficult to select reasonable cutting parameters in the cutting process of high-temperature alloys, resulting in severe wear of the tools and low cutting efficiency

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  • Cutting parameter determining method for combined machining of cutting tool and high-temperature alloy
  • Cutting parameter determining method for combined machining of cutting tool and high-temperature alloy
  • Cutting parameter determining method for combined machining of cutting tool and high-temperature alloy

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Embodiment Construction

[0011] In order to realize the purpose of improving cutting efficiency and reducing tool wear, the present invention adopts the following methods:

[0012] Step 1: Based on the Archard model in the tool model of the adhesive wear theory, according to the geometric relationship between the tool and the workpiece in the process of cutting the superalloy workpiece, the adhesive wear change dW is Based on this, the establishment of the wear model of the flank face of cutting superalloy tools

[0013] Step 2: According to the tool flank wear model, determine the relationship between the normal pressure on the tool wear surface and the cutting temperature when the tool cuts the superalloy workpiece with the minimum adhesive wear: P=f(θ);

[0014] Step 3: Determine the relationship between the yield strength of the superalloy workpiece and the cutting temperature σ s =f(θ);

[0015] Step Four: In Take the minimum value that is , the cutting temperature θ corresponding to the...

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Abstract

Provided is a cutting parameter determining method for combined machining of a cutting tool and high-temperature alloy. The cutting parameter determining method is used for solving the problems that in the high-temperature alloy cutting process, due to the fact that reasonable cutting parameters cannot be easily selected, a tool is seriously worn, and efficiency of cutting machining is low. The cutting parameter determining method is based on an Archard model in an adhesive wear theory tool model built by F.T.Bowden and D.Tabor, the cutting temperature adopted when the adhesive wear between a workpiece material and a wear surface of the cutting tool is minimum in the cutting process of the high-temperature alloy is determined by building a wear model of a rear tool face in the combined machining process of the cutting tool and the high-temperature alloy and according to cutting test data, the correspondence between different cutting speeds and different cutting feed rates is built according to the cutting temperature obtained through the wear model, and the cutting speed and the cutting feed rate are determined; the purpose of improving cutting machining efficiency and the purpose of reducing tool wear are achieved.

Description

technical field [0001] The invention belongs to the field of high-temperature alloy processing, and in particular relates to a method for determining cutting parameters during combined processing of a cutting tool and a high-temperature alloy. technical background [0002] Nickel-based superalloy GH4169 is often used in the manufacture of heat-resistant parts such as discs and blades of aero-engines and gas turbines due to its excellent thermal strength, thermal stability and thermal fatigue properties. With the vigorous development of the domestic power industry and the successive establishment of large power stations, the demand for steam turbines continues to increase. However, due to the poor machinability of the nickel-based superalloy GH4169, the main manifestations are the formation of chips, cutting force, cutting temperature, tool wear and damage, etc., which all present unique rules, and the cutting efficiency is low, which seriously restricts its wide application....

Claims

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Application Information

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IPC IPC(8): G06F19/00G06F17/50
Inventor 郝兆朋赵灿王学惠刘玉波
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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