摘要:

The rubbing pads of self piloting drills balance the forces generated at the single cutting edge. This causes a combined cutting and burnishing action. The following paper describes the surface integrity of deep drilled holes and presents the results of some experiments analysing the cutting and burnishing action.

ISSN:0020-7543    

DOI:10.1080/00207547608956576

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

For the purpose of analysing tube spinning, a model has been presented to describe both the energy necessary and the forces, as well as the process mechanism in detail, e.g. the distribution of strain and velocity, risks of fracture, etc.

ISSN:0020-7543    

DOI:10.1080/00207547608956577

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

The outline of an integrated system for forging die design and manufacture, based on the use of the principles of group technology to rationalize procedures and form the basis for information systems, is given. Associated with each class of forging is a number of alternative standard processing sequences or workplans. Each work plan has associated data for estimating purposes and design procedures for all dies, including where appropriate computer aided design systems.

ISSN:0020-7543    

DOI:10.1080/00207547608956578

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

The research described in this paper has addressed itself to the development of on algorithm to forecast potential job costs and throughput times in a job shop. The algorithm utilizes historically repetitive relationships between cumulative job costs find time which are defined as cost curves. The algorithm was developed and evaluated using actual historical data from a large job shop production facility. Evaluation tests showed the cost forecast mechanism to be an effective early predictor of actual total job costs. The throughput time forecast mechanism was found to be less effective as an early predictor, but valuable as an early warning indicator of potential scheduling problems and irregularities.

ISSN:0020-7543    

DOI:10.1080/00207547608956579

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

This research involves the development and analysis of a model of a particular set of real world job shops. The characteristics of the process include workers flexibility and job routings which may include assembly operations. An experimental design was used which allowed statistical comparisons to be made. Various control and staffing policies were considered, with mean flow time and mean job tardiness used as performance criteria. The shortest imminent operation time rule was found to provide the best performance in all but one situation. Workforce flexibility was observed to significantly improve both performance criteria for all dispatching rules considered.

ISSN:0020-7543    

DOI:10.1080/00207547608956580

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

The purpose of this paper is to develop an algorithm which solves the M by J scheduling problem on the basis of interatively changing the data of the problem while maintaining an optimum solution along the path.

ISSN:0020-7543    

DOI:10.1080/00207547608956581

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Search theory is concerned with the problem of locating a hidden object or target (a military target, a mineral deposit, a failed component in an equipment, etc.) with minimal cost or maximal probability subject to various practical constraints. The problem solution results in a plan or strategy of search, indicating where and in what sequence to look for the target.

ISSN:0020-7543    

DOI:10.1080/00207547608956582

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

This paper investigates the two-channel ordered entry conveyor serviced queueing system with lost arrivals, where a homogeneous service rate exists at the service channels, allowing two types of arrivals—singlets and doublets—each governed by a separate independent Poisson distribution. The conveyor system under consideration is unloaded by two service channels with no storage at either channel.

ISSN:0020-7543    

DOI:10.1080/00207547608956583

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

To investigate the effect of information reduction on performance time while subjects performed combined manual and decision making tasks (type II), two sets of experiments were conducted. In the first set, five subjects performed a 3×2×2 completely randomized, factorial experiment in which three levels of information content in the stimuli, two levels of information in the responses and two levels of element reach were tested. The second set of experiments had three sub-sets. In each sub-set, information in the stimuli was different and was not considered as a variable and the 10 subjects reduced this information to given levels of information in the responses while performing reach of two different magnitudes. It has been found that information content in the stimuli (Nsi), information content in the responses (NRj) and reach (RJ) are significant variables that affect performance time. Performance time increases as the difference between Nsiand NRjdecreases.

ISSN:0020-7543    

DOI:10.1080/00207547608956584

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

This paper reports the major findings to date of an investigation into the human aspects of group technology and cellular manufacture. The project is part of a larger multi-disciplinary multi-institutional research programme financed by Britain's Science Research Council.

ISSN:0020-7543    

DOI:10.1080/00207547608956585

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor