DOI:10.1049/ipej.1959.0006

出版商:IProdE    

年代:1959

数据来源: IET

摘要:

The manufacture in series of the SPIROMATIC bevel gear generator began in 1948. These generators have been supplied in appreciable numbers to various countries.The Oerlikon gear cutting process derives from systems originated about forty years ago, such as continuous indexing, face-type milling cutters with inserted blades, and constant tooth depth. The gear tooth curves thus obtained are portions of extended epicycloids.The processing operation from blank to gear is performed in one single cutting, divided into a first phase, during which the tooth spaces are grooved in the course of a plunge-cut motion, and a second, subsequent phase, during which the tooth profiles are generated through a rolling motion.New standard cutters with a wide working range ensure remarkably short production times.Owing to the mathematical simplicity of the process, to the ready and practical method for obtaining localised tooth bearing (crown), calculations are reduced to a minimum, and correct gears are produced from the start without any trials.

DOI:10.1049/ipej.1959.0008

出版商:IProdE    

年代:1959

数据来源: IET

摘要:

This Paper commences with an appreciation of the two most important extra facilities which may be obtained from the use of an electronic digital computer system. These are quite fundamental considerations showing that a computer provides more than the simple clear cut speeding up of arithmetical processes which have previously been carried out by manual methods or other forms of mechanised accounting. The Paper continues by describing a typical electronic computer designed from the outset to deal with commercial and industrial accounting rather than for scientific calculating. This description is limited strictly to considerations of logical design and the results which may be obtained, rather than of the hardware inside the computer, taking due note of the maxim that “it is not necessary to know how a watch works to tell the time ”.The application of such equipment to the prepara tion of weaving schedules from original orders in a textile mill is used to illustrate one method of dealing with the general problem of parts and material scheduling and stock control.In conclission there is an appreciation of some of the eflects on management of the introduction of faster, more comprehensive control information.

DOI:10.1049/ipej.1959.0009

出版商:IProdE    

年代:1959

数据来源: IET