Technical change and technology policy: the case of numerically controlled lathes in Argentina

Includes bibliography

Teachers's manual for light machine operation; lathe work. University of the State of New York, State Education Department, Bureau of Industrial and Technical Education ...

"Prepared in cooperation with the United States Office of Education."--p. [2] of cover.

Lathe and planer tools...

Cutting tools for planer and lathe, by W.J. Kaup.--Boring tools, by W.J. Kaup.--Shape of standard shop tools.--Straight and circular forming tools, by J.M. Stabel and G.D. Hayden.

Change gear devices : describing and illustrating the development of the screw cutting lathe and the United States patents upon the methods for obtaining various pitches of screw threads : prefaced by a brief history of the engine lathe.

Mode of access: Internet.

The Double-spindle Hartness flat turret lathe.

Mode of access: Internet.

Operator's manual : lathe, engine, floor mounted, sliding bed gap, 17 to 28 in. rated swing, 50 in. open and 30 in. closed between centers ... (LeBlond Machine Tool Company model 17" Regal), (3416-828-3714).

Includes indexes.

Operator's manual : fixture, lathe, metal cutting for 2 inch diameter round or 2 inch square stock, 360 degree index ring, 12-1/2 high, 5 wide, 3-7/8 vertical travel (Numeric Products Company model 312) (3465-022-8817).

"29 November 1967."

Organizational maintenance manual : lathe, engine, bench mounted, solid bed type, 10 inch swing, no. 2 Morse taper center, 1-3/8 spindle hole, 110-volts, 60 cycle, single phase 3/4-horsepower, w/Army dwg. no. 7550151 bench (standard-modern tool series 2,000 model, 11 inch) (3416-517-0955).

"November 1965."

Modern American lathe practice; a new complete and practical work on the "king of machine shop tools," the American lathe. Giving its origin and development. Its design. Its various types as manufactured by different builders ... etc.

Mode of access: Internet.

Computer aided geometric design of form-rolls for NC manufacture

Conventional methods of form-roll design and manufacture for Cold Roll-Forming of thin-walled metal sections have been entirely manual, time consuming and prone to errors, resulting in inefficiency and high production costs. With the use of computers, lead time can be significantly improved, particularly for those aspects involving routine but tedious human decisions and actions. This thesis describes the development of computer aided tools for producing form-roll designs for NC manufacture in the CAD/CAM environment. The work was undertaken to modernise the existing activity of a company manufacturing thin-walled sections. The investigated areas of the activity, including the design and drafting of the finished section, the flower patterns, the 10 to 1 templates, and the rolls complete with pinch-difference surfaces, side-rolls and extension-contours, have been successfully computerised by software development . Data generated by the developed software can be further processed for roll manufacturing using NC lathes. The software has been specially designed for portability to facilitate its implementation on different computers. The Opening-Radii method of forming was introduced as a subsitute to the conventional method for better forming. Most of the essential aspects in roll design have been successfully incorporated in the software. With computerisation, extensive standardisation in existing roll design practices and the use of more reliable and scientifically-based methods have been achieved. Satisfactory and beneficial results have also been obtained by the company in using the software through a terminal linked to the University by a GPO line. Both lead time and productivity in roll design and manufacture have been significantly improved. It is therefore concluded that computerisation in the design of form-rolls for automation by software development is viable. The work also demonstrated the promising nature of the CAD/CAM approach.

Aplicación y comparación de la metodología de diseño Top Down y Bottom Up

Este proyecto estudia y compara las metodologías Bottom Up y Top Down, utilizadas en el desarrollo de productos dentro de un departamento de manufactura en un ambiente colaborativo -- Se desarrolló un producto mediante ambas metodologías, posteriormente se analizó su incidencia en el comportamiento de indicadores de gestión, que miden el desempeño de una organización -- Se destacan también los beneficios del Top Down en la manufactura de grandes ensambles, tomando como ejemplo un torno