Through-Tool Coolant Drilling of Aluminum/SiC Metal Matrix Composite1

2000 ◽  
Vol 122 (4) ◽  
pp. 384-388 ◽  
Author(s):  
Stuart Barnes ◽  
Ian R. Pashby
Keyword(s):  
Tool Wear ◽  
Beneficial Effect ◽  
Titanium Nitride ◽  
Surface Finish ◽  
Strong Evidence ◽  
Cutting Forces ◽  
Metal Matrix ◽  
Solid Carbide ◽  
Cutting Operation ◽  
Tool Cooling

Through-tool coolant was applied to the drilling of an aluminum/SiC MMC. Titanium nitride coated, solid carbide drills were used to investigate the effect of the coolant application method on the performance of the drilling operation. Holes were produced dry, with conventional coolant and with through-the tool coolant. The results provided strong evidence that the conventional application of coolant was having no beneficial effect on the cutting operation compared to dry drilling. However, through-tool cooling gave a significant improvement in performance in terms of tool wear, cutting forces, surface finish and the height of the burrs produced. [S0094-4289(00)02104-6]

Through-Tool Coolant Drilling of Aluminium/SiC Metal Matrix Composite

1999 ◽  
Author(s):  
S. Barnes ◽  
I. R. Pashby
Keyword(s):  
Cutting Forces ◽  
Entry And Exit ◽  
Workpiece Material ◽  
Dry Drilling ◽  
Solid Carbide ◽  
Cutting Operation ◽  
Tool Cooling ◽  
Conventional Cooling ◽  
Tool Cutting

Abstract Through-tool coolant has been applied to the drilling of a 2618 aluminium alloy reinforced with 18% silicon carbide (SiC) particles. Titanium nitride coated, K10, solid carbide drills were used to investigate the effect of the coolant application method on the performance of the drilling operation. Through holes were drilled in a 24 mm thick workpiece material without the application of any coolant, with the conventional application of coolant and with the coolant applied through-the tool. Cutting forces were measured during the drilling trials in addition to the wear on the drills, the extent of the entry and exit burrs produced on the workpiece and the quality of the holes produced. The results obtained provided strong evidence that the conventional application of coolant was having no beneficial effect on the cutting operation compared to dry drilling. However, there was very little evidence of an increase in drill wear which some workers suggest is associated with the formation of an abrasive slurry when using coolant with MMCs. Nevertheless, examination of the used drills in the scanning electron microscope confirmed abrasion as the primary wear mechanism. The results showed mat even at the low coolant pressures, through-tool cooling gave a significant improvement in tool wear, cutting forces, surface finish and the height of the burrs produced. Consequently, the recommendations from this work are that through-tool coolant can result in a marked improvement in performance when drilling MMCs and that conventional cooling has virtually no effect on the machinability of this material compared with dry drilling.

Reinforcement and Cutting Tools Interaction during MMC Machining - A Review

2018 ◽  
Vol 22 ◽  
pp. 47-54 ◽  
Author(s):  
Mukesh Chaudhari ◽  
M. Senthil Kumar
Keyword(s):  
Tool Wear ◽  
Metal Matrix Composites ◽  
Process Parameters ◽  
Surface Finish ◽  
Metal Matrix ◽  
Cutting Tools ◽  
Tool Geometry ◽  
Matrix Composites ◽  
Good Surface ◽  
Aerospace Medical

Aluminum based metal matrix composites (AMMC) have found its applications in the automobile, aerospace, medical, and metal industries due to their superior mechanical properties. Fabricated Aluminum based metal matrix composites require machining to improve the surface finish and dimensional tolerance. Machining should be accomplished by good surface finish by consuming lowest energy and less tool wear. This paper reviews the machining of Aluminum based metal matrix composites to investigate the effect of process parameters such as tool geometry, tool wear, surface roughness, chip formation and also process parameters.

Effect of Cutting Parameters on Cutting Forces for Different Profile of Cutting

2015 ◽  
Vol 799-800 ◽  
pp. 361-365 ◽  
Author(s):  
Roshaliza Hamidon ◽  
Erry Y.T. Adesta ◽  
Muhammad Riza ◽  
Mohammad Iqbal
Keyword(s):  
Surface Finish ◽  
Orthogonal Array ◽  
Cutting Forces ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Anova Analysis ◽  
Cutting Operation ◽  
Cutting Processes ◽  
Influential Parameters ◽  
Cutting Speeds

In machining operation of mould cavities, the tool travels in various straight and corner profiles following predetermined toolpath. Such condition results in a fluctuation of cutting forces that may produce bad surface finish. The objective of this study is to investigate the most influential parameters on cutting operation for both straight and corner profiles of pocketing operation. Cutting speeds of 150, 200 and 250m/min, feedrates from 0.05, 0.1, 0.15 mm/tooth and depths of cut of 0.1, 0.15 and 0.2 mm were selected for the cutting processes. Taguchi L9 orthogonal array with Pareto ANOVA analysis was employed to analyze the effects of the selected parameters. The result demonstrates there are different effects of cutting parameters on cutting forces for straight and corner profiles. Furthermore, it was found that cutting speed and feedrate are prevailing factors that affected cutting forces for both types of profile.

Cutting forces, tool wear and surface finish in high speed diamond machining

2017 ◽  
Vol 49 ◽  
pp. 293-304 ◽  
Author(s):  
Ekkard Brinksmeier ◽  
Werner Preuss ◽  
Oltmann Riemer ◽  
Rüdiger Rentsch
Keyword(s):  
Tool Wear ◽  
Surface Finish ◽  
Cutting Forces ◽  
High Speed ◽  
Diamond Machining

Machining Performance of PM Material Containing MnX Additives1

2000 ◽  
Vol 122 (4) ◽  
pp. 379-383 ◽  
Author(s):  
Stuart Barnes ◽  
Michael J. Nash ◽  
Moh. H. Lim
Keyword(s):  
Powder Metallurgy ◽  
Tool Wear ◽  
Surface Finish ◽  
Cutting Forces ◽  
Superior Performance ◽  
Machining Performance ◽  
Turning Operation ◽  
Cutting Speeds

A new free-machining additive, MnX, has been reported to improve the machining performance of ferrous powder metallurgy (PM) materials. This work investigated this claim by comparing the performance of three otherwise identical PM materials containing: no additive, conventional manganese sulphide (MnS) additions and the new MnX additive. A turning operation and cutting speeds of 100–250 m/min were used during which cutting forces, tool wear and surface finish were measured. The MnX material was found to exhibit superior performance. However, this was most noticeable at higher cutting speeds and at the lower cutting speeds, differences in performance were substantially reduced. [S0094-4289(00)02004-1]

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