Machinability and Surface Integrity Part 11 ppt

... Secondary Machining Operations and the Re- sulting Surface Integrity: An Overview. Surface Topogra- phy, Vol. 3, 25–42, 1990. Smith, G.T. Some Aspects in the Surface Integrity and Tool Wear Associated ... Fundamentals and Future of Quality, 446–451, 1986. Shiraishi, M. and Sato, S. Dimensional and Surface Rough- ness controls in a Turning Operation. Trans. of ASME, Vol...

Ngày tải lên: 05/08/2014, 21:20

... University. . Machinability and Surface Integrity  7 Machinability and Surface Integrity ‘It is common sense to take a method and try it. If it fails, admit it frankly and try another. ... which it appears. Machinability and Surface Integrity  Figure 144. The major factors that inuence a machined component’s condition. Machinability and Surface In...

Ngày tải lên: 05/08/2014, 21:20

... (isotherms) during machining, illustrated across the: chip, insert and work- piece; at relatively low cutting speed . Machinability and Surface Integrity  Figure 173. Finite Element Method (FEM), to ... – is usually the re- sult of tool/workpiece anity associated with tem- Machinability and Surface Integrity  perature and its respective cutting speed (i.e. see Fig...

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... accelerated machinability test, illustrating how ank wear and surface texture degrades, with the number of facing-o passes . Machinability and Surface Integrity  tions. For a practical machinability ... Figure 149. Flow chart indicating the desigh philosophy for unbiased and ranked machinability trials. Machinability and Surface Integrity  ... utilised. O...

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... the order to ‘break-rank’ (i.e randomising both their pacing and steps) when proceeding over a structure such as a bridge was mandatory. Machinability and Surface Integrity  is either ‘pearled’ ... of instrument noise, or vibration. [Courtesy of Taylor Hobson] . Machinability and Surface Integrity  Figure 156. Vibration and chatter in machining operations, with the...

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... deviation of a sample from a production batch run. Machinability and Surface Integrity  depending upon whether a ne, medium, or coarse surface texture is obligatory. Due to the variability ... such surface texture values do not reect the likely in-service performance of the part. Neither the surface topography, nor its associated integrity has been quantied by assign...

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... processes. Machinability and Surface Integrity  the surface topography, if used in conjunction with the Ra value (Fig. 164). is is particularly true for many machining applications and where ... following expression: Machinability and Surface Integrity  the point, that all of these two-dimensional surface pa- rameters can be classied into three distinct groupi...

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... min –1 and the machinability trials used an in-cut time of just 6 seconds – in order to maintain a sharp cutting edge on the tools. Machinability and Surface Integrity  Figure 168. In face- and ... ‘beta-function’ and typical ‘manufacturing process envelopes’. Machinability and Surface Integrity  the considerably larger eective tool nose radius, act- ing like...

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... types of machinability investigation. In the former case, it is Machinability and Surface Integrity  Tool-life Diagrams Machinability is a subject that has yet to be fully-de- ned and analysed, ... appropriate cali- Machinability and Surface Integrity  Figure 178. Multi-axis non-rotating dynamometers, used for: milling, drilling and turning experimental data-ga...

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... • Temperature and thermal eects – can be utilised to improve tool life and part quality, • Tool wear analysis – predicts the eects of tool ank wear and how this wear land inuences sub- sequent: ... vector directions have been reversed and some terms have been modied from the original work. [Source: Ernst & Merchant, 1941] . Machinability and Surface Integrity...

Ngày tải lên: 05/08/2014, 21:20