The paper is a suitable medium for storing the data. The tape employed for machine tool control is 25.4 mm (1") wide, with eight channels. The tape has a line of sprocket holes so that it can be conveniently fed ...

It is the logical extension of the N/C and computer control. In the N/C process, the cutting speed and feeds are decided before hand based on experience and fixed by the programmer which may or may not be suitable in ...

Most of heat treatment processes include the heating of a metal alloy at a high temperature. In order to obtain the optimum properties with many of the modern alloys, a fairly accurate con­trol of their heat treatment temperatures is necessary. ...

The way of carrying out heat treatment of H.S.S. is given in a graphical manner in Fig. 2.14. First the specimen is heated to about 850°C and kept at this temperature for 4 to 5 hours. This is done in ...

Various attachments are available for specialised applications and these increase the scope and versatility of the machine. (i) External Turning Tools :   These include (a) hollow mills, (b) balance turning tools, (c) box tools, (d) knee tools, (e) swing tools. The hollow mills are directly mounted in ...

It is possible to use computers instead of controller units in the numerical control machine tools thereby replacing much of the conventional N/C hardware with software. Such a machine could be self contained one having its own dedicated mini-computer to ...

A micro processor can be considered as the control and proces­sing unit of a small computer, capable of handling both arithmetic and logic data under control of a program. It utilizes the techno­logy of the Large Scale Integration (LSI) and ...