... of aluminum alloy. BUE is responsible for early tool breakage due to excessive material build up from the machined part on the cutting face, leading to problems of shape irregularity and tool-tip breakage. Thus, diamond-like carbon (DLC) was deposited and tested to verify cutting precision in aluminum alloy...

... of the tribological phenomena along the tool-chip-workpiece interfaces in dry machining of an AISI 1045 steel with a TiN coated carbide tool. Finally a new friction model and heat partition model has been developed for implementation in a numerical cutting model. References 1 Ruiz de Eguilaz , E. , Rech...

... radius of 1.5 mm. The plate surfaces were made of 080 M40 steel. The dimensions of the steel plates were 28 × 20 × 10   mm 3 (thickness). After machining, the pins were electropolished to remove any work-hardened layers that might have formed. Hardness measurements of the Al–4Mg alloy...

...Michael R. Lovell; P. Cohen; Pradeep L. Menezes; R. Shankar When machining miniaturized components, the contact conditions between the tool and the workpiece exhibit very small contact areas that are on the order of 10 − 5 mm 2 . Under these conditions, extremely high contact stresses are generated...

... state at about twice the value of the steady-state flux of the tested commercial fluid. Scanning electron microscope imaging was used to further evaluate membrane fouling by each fluid. The machining capabilities of the designed fluid were examined in terms of cutting forces and machining temperature...

..., in a high-speed machining environment. The fracture-mechanics-based model requires normal and tangential stresses, acting on the flank of the cutting tool, as input data. Analysis of the subsurface crack propagation in the cobalt binder of cemented carbide cutting tool material is performed using a finite...

... to establish the effect of cutting conditions (speed, feed, and depth of cut) on the cutting forces and time variation of carbide tool wear data in high-speed machining (face milling) of Al–Si cast alloys that are commonly used in the automotive industry. Method and Approach. The experimental setup and force...

...Wilfredo Moscoso; Efe Olgun; W. Dale Compton; Srinivasan Chandrasekar A study has been made of the effect of an externally imposed, low-frequency modulation ⩽ 100 Hz on the action of a fluid in machining. It is shown that in conventional machining, fluid action in terms of lubrication...

... in the ASME JOURNAL OF TRIBOLOGY . Manuscript received by the Tribology Division March 26, 2002; revised manuscript received July 1, 2002. Associate Editor: T. C. Ovaert. 26 March 2002 01 July 2002 19 06 2003 mechanical contact interface phenomena machine tools machining sliding...

... curls out of contact with the tool and progressively extends outward and away from the cutting edge in conjunction with an increase in the length of contact as cutting progresses. The sticking and sliding zones are unchanged when these pure metals are machined with tungsten carbide tools. Two types...

...R. Komanduri, Fellow ASME; Z. B. Hou This paper addresses two fundamental thermal issues of tribology in orthogonal machining with a sharp tool, namely, the nature of the apparent heat partition in the shear plane and the variable heat partition at the chip-tool interface. A new model for the shear...

...H. D. Espinosa; A. J. Patanella; M. Fischer Understanding high speed machining processes requires knowledge of the dynamic friction response at the tool-workpiece interface, the high strain rate response of the workpiece material and its fracture mechanisms. In this paper, a novel experimental...

...Jonathan Thornburg; David Leith Use of metalworking fluids during machining results in a mist that is associated with adverse health effects. Experiments conducted on a small lathe quantified the amount of mist generated by evaporation/condensation, centrifugal force, and impaction. Evaporation...

... September 1999 lubrication hydrostatics machining forming processes elastic deformation plastic deformation pressure finite element analysis FEM Analysis Hydrostatic Pressure Upsetting Lubricant Tribology Real Contact Area Oil Pocket It is well known that the lubricant...

...M. Bhagavat; V. Prasad; I. Kao Free abrasive machining (FAM) process associated with the wiresaw wafer slicing involves a three body abrasion environment. During the process, the cutting action is caused by fine abrasives freely dispersed in the slurry, which get trapped between an axially moving...

...Patrick Kwon, Assistant Professor, The purpose of this paper is to develop predictive models for flank wear that explicitly incorporate cutting temperature and the physical properties of coatings and work materials. The development of such models can minimize time-consuming machining experiments...