Extension of basic geometric analysis of 3-D chip forms in metal cutting to chips with obstacle-induced deformation
✍ Scribed by A.G. Kharkevich; Patri K. Venuvinod
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 377 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0890-6955
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✦ Synopsis
In machining, chips are known to break mainly because of obstacle-induced deformation. Recently, the present authors had reported on a new and basic geometric analysis of 3-D chips in the absence of deformation after separation from the tool rake face. This paper continues the analysis to cover the full lifecycle of chips subjected to obstacle-induced deformation. The main contributions of this paper are the identification of the geometric properties that are likely to be preserved during obstacle-induced chip deformation and their implications, and the utilisation of these properties to obtain insights concerning the geometry of the tool-chip contact area. The new theoretical findings are verified against empirical data obtained through manual deformation of chips, video recordings of the development of obstructed chips, and the use of a specially prepared grooved tool that imposes a predetermined side-curl on the chip.