Engineering Machine Tools and Processes; A Text-Book for Engineers, Apprentices, and Students in Technical Institutes, Trade Schools and Continuation Classes

Engineering Machine Tools and Processes; A Text-Book for Engineers, Apprentices, and Students in Technical Institutes, Trade Schools and Continuation Classes

By (author) 

List price: US$11.57

Currently unavailable

Add to wishlist

AbeBooks may have this title (opens in new window).

Try AbeBooks

Description

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...the lathe is a good enough tool; but in the science of that highly skilled branch of engineering----gauge making--the lathe is too coarse a tool for the accuracy demanded. Not only accuracy for sizes, but good true surfaces are also required. There are now many grinding machines, amongst which may be mentioned external and internal, plane surface grinder, universal grinding machine, tool and cutter grinder, disc grinder, and electric grinders. Plain Grinder.----This type of machine, illustrated by A. Herbert, Ltd., provides for the rotation of the work, whilst the driven emery wheel is fed slowly along a guide parallel to the axis of the work. In Fig. I99 an 18 X 96 inches plain grinder is shown. It is provided for motor drive, with a 30-inch gap, and is known as a Norton plain grinding machine. It is made with a fixed wheel base and a traversing work table. This design permits of the greatest convenience and rapidity in operation, and gives the closest accuracy in the finished product. The fixed wheel base ensures a total absence of vibration, as the wheel is running under ideal conditions. The moving of the table past a fixed cutting point ensures permanent accuracy of the work when the table slides are once made straight. This design also permits the use of a very simple and rigid cross-feed mechanism, which, being contained in a massive base casting, secures mathematically correct movements of the wheel slide in response to the movements of the index wheel. In addition, the operator can reach all adjustment and speed-changing handles without moving from his position. Standard machines are intended solely for plain cylindrical grinding on dead centres, although r8-inch machines are arranged for grinding taper work. Speed-changing...show more

Product details

  • Paperback | 82 pages
  • 189 x 246 x 4mm | 163g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236864387
  • 9781236864383