Tool Wear Analysis of Large Diameter Mud Shield in Clay and Silty Clay Stratum

Abstract This paper presents the analysis of data collected using the MTConnect protocol from a lathe with a Computer Numerical Control (CNC). The purpose of the analysis is to determine an estimated cutting tool life and generate a model for calculating a real-time proxy of cutting tool wear. Various streams were used like spindle load, NC program blocks, the mode, execution etc. The novelty of this approach is that no information about the machining process, beyond the data provided by the machine, was necessary to determine the tool’s expected life. This method relies on the facts that a) it is generally accepted cutting loads increase with tool wear and b) that many CNC machines rely on a small set of regularly run CNC programs. These facts are leveraged to extract the total load for each run of each program on the machine, creating a dataset which is a good indicator of tool wear and replacement. The presented methodology has four key steps: extracting cycle metadata from the machine execution data; computing the integrated spindle loads for every cycle; normalizing the integrated spindle loads between different programs; extracting tool wear rates and changes from the resulting dataset. It is shown that the method can successfully extract the signature of tool wear under a common set of circumstances which are discussed in detail.

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Tool wear analysis of ball nose end mill in the finish machining of free form surfaces

Materials Today Proceedings ◽

10.1016/j.matpr.2020.02.257 ◽

2020 ◽

Vol 26 ◽

pp. 1289-1292 ◽

Cited By ~ 1

Author(s):

M. Boujelbene ◽

M.B. Mhamdi ◽

B. Ayadi ◽

H.P. Singh

Keyword(s):

Tool Wear ◽

Free Form ◽

End Mill ◽

Finish Machining ◽

Wear Analysis ◽

Free Form Surfaces

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Tool wear analysis of pressurized face TBM drives in the glacial geology of the Pacific Northwest

Geomechanics and Tunnelling ◽

10.1002/geot.201800002 ◽

2018 ◽

Vol 11 (2) ◽

pp. 150-156

Author(s):

Ulf Georg Gwildis ◽

Ingo Sass

Keyword(s):

Tool Wear ◽

Pacific Northwest ◽

Glacial Geology ◽

Wear Analysis ◽

The Pacific

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Investigation on Deep Hole Trepanning of TC10 Titanium Alloy

Volume 2A: Advanced Manufacturing ◽

10.1115/imece2019-11235 ◽

2019 ◽

Author(s):

Xiaolan Han ◽

Zhanfeng Liu

Keyword(s):

Titanium Alloy ◽

Tool Wear ◽

Titanium Alloys ◽

Process Parameters ◽

Thrust Force ◽

Large Diameter ◽

Manufacturing Cost ◽

Deep Hole ◽

Technical Problems ◽

Material Utilization

Abstract Titanium alloy is a typical hard-to-machine material, and has a relatively expensive material price. For deep-hole tubes made of titanium alloys, the material utilization rate of direct deep-hole drilling is relatively low, especially for large diameter holes. Deep-hole trepanning provides an effective method that reduces manufacturing cost and improves the material utilization which is used on larger diameter bars. In this paper, deep-hole trepanning tests are carried out on the TC10 titanium alloys to resolve the key technical problems. The thrust force and torque, tool wear, and chip morphology are analyzed based on the different process parameters. The results show that appropriate process parameters can remove the chips easily and reduce the thrust force and tool wear. The titanium alloy deep-hole trepanning has a good drilling effect and solves the problem of drilling deep, large diameter holes in titanium alloy tubes, which has practical significance for reducing production cost and improving material utilization.

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