ISSN:0020-7543    

DOI:10.1080/00207546508919958

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

Many materials machine in either a ductile or brittle manner depending on the cutting conditions. This paper identifies the conditions which allow perspex to be machined in a ductile manner. A quantitative assessment is made of the effects of cutting speed and feed rate on the ductile-brittle transition when turning with a tool having a 30° rake angle.

ISSN:0020-7543    

DOI:10.1080/00207546508919959

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

This paper reports a D.S.I.R. experiment in the application of programmed instruction to craft apprentice training

ISSN:0020-7543    

DOI:10.1080/00207546508919960

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

The paper concerns a technique of Work Sampling in which the sample, instead of being an immediate recognition of the state of the activity, is extended over a fixed period of time. In this time period all states of the activity which fall completely within the sample period are recorded, with the lengths of time of their occurrence

ISSN:0020-7543    

DOI:10.1080/00207546508919961

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

ISSN:0020-7543    

DOI:10.1080/00207546508919962

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

The problem of chip disposal has become more acute with the invention of high speed carbide and ceramic tools. An intruding protrusion in the normal flow path of the chip has been found to be an effective method for chip-control. A study of the variables of the mechanics of chip formation, viz. an analysis of cutting forces, chip thickness and dynamic shear strain in relation to the size and location of the intruding protrusion reveals some interesting characteristics. This paper attempts to present a physical explanation of such behaviours of the cutting variables.

ISSN:0020-7543    

DOI:10.1080/00207546508919963

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

A previous investigation proposed general definitions of some screw thread elements. Further study of one of these elements (the effective diameter equivalent of flank angle errors) has shown that certain ambiguity was left unexplained. This paper gives clarification and the choice already made is justified

ISSN:0020-7543    

DOI:10.1080/00207546508919964

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

In order to assist comparison between industrially orientated experiments and the proper handling of results of a single experiment, six types of pacing are defined (with subtypes according to whether a system is buffered or can be over-ridden), divided into rigid, semi-rigid and non-rigid systems. The part played by tolerance in the classification and the relationship between tolerance and machine rate are explained.

ISSN:0020-7543    

DOI:10.1080/00207546508919965

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor