Experimental Study on Tool Wear of Step Drill During Drilling Ti/CFRP Stacks

2018 ◽  
pp. 440-450
Author(s):  
Qi Wang ◽  
Fuji Wang ◽  
Chong Zhang ◽  
Chen Chen ◽  
Dong Wang
Keyword(s):  
Experimental Study ◽  
Tool Wear ◽  
Step Drill

Experimental Study on Performance of CBN-Coated, CBN-Uncoated and PCD Tools in Turning Al 2124 SiC (45%wt) PMMC

2013 ◽  
Vol 567 ◽  
pp. 27-31 ◽  
Author(s):  
Muguthu Joseph Njuguna ◽  
D. Gao
Keyword(s):  
Experimental Study ◽  
Tool Wear ◽  
Metal Matrix ◽  
Flank Wear ◽  
Tool Material ◽  
Crater Wear ◽  
Pcd Tool ◽  
Particulate Metal ◽  
Tools Wear ◽  
Pcd Tools

The machining of PMMCs is very difficult due to the highly abrasive and intermittent nature of the reinforcement. It is therefore necessary to choose tool material wisely. The focus of this paper was to assess performance of CBN-uncoated, CBN-coated and PCD tools with respect to tool wear, wear mechanism and cutting force while turning of Al 2124 SiC (45%wt) Particulate Metal Matrix Composite. Experimental results reveal that abrasion and chipping presented the most prevalent mode of wear among the CBN-uncoated, CBN-coated and PCD tools. Flank and crater wear were observed in all tools with flank wear being more prevalent in CBN-coated and CBN-uncoated tools. Wear among PCD tool was low as compared to CBN-uncoated CBN-coated. PCD tool is more suitable for cutting Al 2124 SiC(45%wt) PMMC.

Experimental Study on the Thread Turning Performance of Two TiAlN Coated Thread Inserts with Different Features

2013 ◽  
Vol 797 ◽  
pp. 149-154
Author(s):  
Kang Li ◽  
Peng Nan Li ◽  
Ming Chen
Keyword(s):  
Experimental Study ◽  
Tool Wear ◽  
Coating Thickness ◽  
Matrix Material ◽  
Chip Morphology ◽  
Rake Face ◽  
Type Alloy ◽  
Alloy Matrix ◽  
Coating Technology ◽  
Coated Tools

With the development of the coating technology, coated tools have been widely used in processing industries. Thread turning is one of its applications. The performance of coated thread inserts varies with the change of coating material, coating thickness, matrix material and tool structure. Two tungsten-cobalt type alloy matrix, TiAlN coated thread inserts with different coating thickness, rake face type had been employed to conduct the thread turning experiments. By analyzing the cutting forces, chip formation and tool wear, it was found that insert with coating thickness of 4.35 μm would result in less tool wear under MQL condition, smaller cutting force, better chip morphology under dry condition compared with insert with coating thickness of 2.38 μm.

An Experimental Study on Diamond Cutting of Optical Glass

2008 ◽  
Vol 375-376 ◽  
pp. 211-215 ◽  
Author(s):  
Hang Zhao ◽  
Ming Zhou
Keyword(s):  
Experimental Study ◽  
Tool Wear ◽  
Ultrasonic Vibration ◽  
Optical Glass ◽  
High Hardness ◽  
Optical Quality ◽  
Process Conditions ◽  
Machined Surface ◽  
Ductile Mode ◽  
Indentation Analysis

Optical glass is one of the most difficult-to-cut brittle materials due to its high brittleness and high hardness. In this work, an experimental study was conducted to diamond-cut glass SF6 in ductile mode. Nano-indentation analysis was performed for understanding the material deformation behavior in practical cutting process. The effect of process conditions, i.e. conventional turning and ultrasonic vibration assisted cutting, on the tool wear and surface quality was discussed based on the observations of the tool wear zone microstructure and the machined surface topography. The investigation presents the feasibility of achieving optical quality surfaces on glass with the application of ultrasonic vibration cutting technology. The tool life and surface finish were improved significantly by applying ultrasonic vibration to the cutting tool.

Experimental Study on the Effect of Cold Air Cutting on Cutting Temperature, Cutting Force and Tool Wear during Machinging of Cr12 Tool Steel

2010 ◽  
Vol 431-432 ◽  
pp. 334-337
Author(s):  
Jia Long Ren ◽  
Y. Su ◽  
X.Y. Guan ◽  
Y.W. Li ◽  
Q.X. Wang
Keyword(s):  
Experimental Study ◽  
Tool Wear ◽  
Cutting Force ◽  
Tool Steel ◽  
Cutting Temperature ◽  
Cold Air ◽  
Lubrication Condition ◽  
Oil Mist ◽  
Lubrication Conditions

Cold air cutting is a kind of environmetnally friendly cutting technology. The present study investigated the influence of cold air and cold air with oil mist on cutting temperature, cutting force and tool wear in the machining of Cr12 tool steel. For comparision, dry and flood coolant was also used as the cooling/lubrication conditions in the experiments. The findings of the study show that cold air with oil mist was the most effective cooling/lubrication condition in reducing the cutting temperature, cutting force and tool wear during the machining of Cr12 tool steel.

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