Results 11 to 20 of about 373 (125)

Critical Undeformed Chip Thickness and Cutting Pressure in Relation to Ductile Mode Cutting of KDP Crystal [PDF]

open access: yesKey Engineering Materials, 2010
Microgroove processes are carried out on Potassium Dihydrogen Phosphate (KDP) crystals of different crystalline orientation using diamond tool, the speed of groove is very low in order to avoid the influence of temperature. The main process characteristics are examined including the groove geometry, cutting forces and critical underformed chip ...
Hao Feng Chen   +4 more
core   +4 more sources

Multiscale Predictive Modelling of Critical Undeformed Chip Thickness [PDF]

open access: yes, 2021
Predictive modelling of critical undeformed chip thickness (tc) is important for ultra-precision machining of brittle materials in a ductile mode. This paper presents a hierarchical multiscale modelling approach that is capable of quantitatively predicting the variation of tc with crystal orientation. The proposed multiscale modelling approach consists
Xuezhen Wang   +3 more
openaire   +2 more sources

A predictive model of the critical undeformed chip thickness for ductile–brittle transition in nano-machining of brittle materials [PDF]

open access: yesInternational Journal of Machine Tools and Manufacture, 2013
Abstract There is a distinct transition in the mode of material removal in machining of brittle materials if the undeformed chip thickness is below a critical threshold of submicron scale. It is believed that at such small scale of material removal, the energy required to extend pre-existing flaws in the microstructure of brittle material exceeds the
Arif, M.   +3 more
openaire   +2 more sources

Modeling of undeformed chip in Power skiving gear cutting process [PDF]

open access: yes, 2023
Розглянуто метод нарізування зубчастого колеса методом Power skiving та детально проаналізовано принцип побудови недеформованої стружки при нарізуванні зовнішнього прямозубого вінця.
Slipchuk, A., Сліпчук, А.
core   +1 more source

Research on the Ductile Chip Formation in Grinding of Brittle Materials [PDF]

open access: yes, 2011
A theoretical discussion has been presented for the ductile chip formation in grinding of brittle materials. The single abrasive grit was dealt with a top-rounded cutter removing material of varying undeformed chip thickness.
Zhi Qiang Liang   +5 more
core   +3 more sources

Modeling of micro-grinding forces considering dressing parameters and tool deflection [PDF]

open access: yes, 2021
The prediction of cutting forces is critical for the control and optimization of machining processes. This paper is concerned with developing prediction model for cutting forces in micro-grinding.
Azarhoushang, Bahman   +5 more
core   +1 more source

Molecular dynamics modelling of brittle-ductile cutting mode transition : case study on silicon carbide [PDF]

open access: yes, 2015
The mechanism of brittle-ductile cutting mode transition has received much attention over the past two decades. Due to the difficulties in directly observing the cutting zone during the brittle-ductile cutting mode transition by experimental techniques ...
Zhang, GQ, Xiao, GB, To, S
core   +1 more source

Shoulder damage model and its application for single point diamond machining of ZnSe crystal [PDF]

open access: yes, 2021
The damaging of ZnSe crystal has a significant impact on its service performance and life. Based on the specific cutting energies for brittle and ductile mode machining, a model is proposed to evaluate the damage depth in the shoulder region of ZnSe ...
Liang, R.   +9 more
core   +1 more source

Investigation of Chip Thickness and Force Modelling of Trochoidal Milling [PDF]

open access: yes, 2017
With the ever increasing pressure to reduce processing time and cost, researchers in machining have begun to develop a body of work centered around increasing the throughput of machining operations.
Niaki, Farbod Akhavan   +2 more
core   +4 more sources

Experimental Investigation on Cutting Characteristics in Nanometric Plunge-Cutting of BK7 and Fused Silica Glasses [PDF]

open access: yes, 2015
Ductile cutting are most widely used in fabricating high-quality optical glass components to achieve crack-free surfaces. For ultra-precision machining of brittle glass materials, critical undeformed chip thickness (CUCT) commonly plays a pivotal role in
Qinglong An, Weiwei Ming, Ming Chen
core   +1 more source

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