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Drilling parameter optimizing method based on hard alloy tool tipping failure predication

A cemented carbide and failure prediction technology, applied in the direction of manufacturing tools, metal processing equipment, measuring/indicating equipment, etc., can solve the problems of reducing tool usage efficiency, shortening tool usage time, and difficult to predict tool chipping failure time, etc. Achieve the effects of avoiding the influence of hole making precision, protecting personal safety and avoiding economic burden

Active Publication Date: 2018-01-19
SHENYANG AEROSPACE UNIVERSITY
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AI Technical Summary

Problems solved by technology

Therefore, it is difficult to predict the failure time of the tool chipping under abnormal wear conditions, and then it is impossible to flexibly set reasonable drilling parameters according to the number of holes made. generation, which reduces the use efficiency of the tool and cannot give full play to the maximum drilling capacity of the tool

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  • Drilling parameter optimizing method based on hard alloy tool tipping failure predication
  • Drilling parameter optimizing method based on hard alloy tool tipping failure predication
  • Drilling parameter optimizing method based on hard alloy tool tipping failure predication

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Embodiment Construction

[0042] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043] Such as figure 1 As shown, a method for predicting chipping failure of a cemented carbide tool in this embodiment includes the following steps:

[0044] Step 1: Before workpiece drilling and production, obtain the thickness h of the workpiece to be drilled, the diameter d of the carbide tool used for drilling, and the axial height h of the cutting edge of the carbide tool d And the expected number of drilled holes in the workpiece;

[0045]The workpiece material to be drilled is a difficult-to-machine material such as titanium alloy or superalloy, the reference range of workpiece material thickness h is 3 mm to 15 mm, the reference range of tool diameter d is 3 mm to 10 mm, and the axial height of tool cutting edge h d The reference range is 1mm ~ 3mm.

[0046] Step 2: Set the drilling parameters of the drilling process, the drilling parame...

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Abstract

The invention discloses a drilling parameter optimizing method based on hard alloy tool tipping failure predication and belongs to the technical field of tool service life prediction. The method comprises the steps of obtaining the workpiece thickness, the diameter of a hard alloy tool, the axial height of a cutting edge and the expected drilling hole number, setting the drilling parameters, calculating the number M of drilled holes when the tipping failure occurs to the hard alloy tool, resetting the drilling parameters if M is smaller than or equal to the expected drilling hole number, repeatedly conducting the calculation until M is greater than the expected drilling hole number, and carrying out workpiece drilling production according to the obtained optimized drilling parameters. By means of the drilling parameter optimizing method based on hard alloy tool tipping failure predication, the number of holes drilled before the tipping failure can be predicted, and unreasonable drilling parameters are optimized, so that the tool achieves the maximum drilling capacity, the situation that tools are wasted and consequently extra economic burdens are caused is avoided, and the problemthat tool failure occurs in advance due to setting errors of the drilling parameters and consequently the expected drilling hole number target cannot be achieved is avoided.

Description

technical field [0001] The invention belongs to the technical field of tool life prediction, and in particular relates to a drilling parameter optimization method for carbide tool chipping failure prediction. Background technique [0002] Cemented carbide has high strength, hardness and fracture toughness, and is a reliable tool material. Therefore, cemented carbide tools are widely used in the field of cutting composite materials, titanium alloys, high-temperature alloys and other materials. During the drilling process, the contact between the tool and the hole wall is continuous and the drilling area is approximately a closed space, resulting in poor chip removal during the drilling process; if the workpiece material is a difficult-to-machine material, such as titanium alloy material, its The thermal conductivity is: 7.5W / (m·℃), the thermal conductivity is poor, and most of the heat is transferred through the tool, causing the heat generated to be concentrated in the drill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/09
Inventor 王奔印文典回丽王明海郑耀辉
Owner SHENYANG AEROSPACE UNIVERSITY
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