Manufacturing Topic II Machine Tools&Systems
Manufacturing Topic II Machine Tools& Systems
Contents >The evolution of machine tools >Material removal techniques on machine tools >Metal Cutting Operations
Contents The evolution of machine tools Material removal techniques on machine tools Metal Cutting Operations
The evolution of machine tools > 6000 years ago -----bow drill(弓 钻) 2000 or 3000 years ago----lathe > The cutting tools used on these machines were made of copper or more probably bronze
The evolution of machine tools 6000 years ago ------------ bow drill ( 弓 钻） 2000 or 3000 years ago ---- lathe The cutting tools used on these machines were made of copper or more probably bronze
In about 1772 -------Boring Machine This machine was developed by Wilkinson.It was powered by a water wheel and was used to bore the cylinders of the first steam engines The cutting tools used were made of high- carbon steel suitably heat treated
In about 1772 ------- Boring Machine This machine was developed by Wilkinson. It was powered by a water wheel and was used to bore the cylinders of the first steam engines The cutting tools used were made of highcarbon steel suitably heat treated
Waterwheel Casting being machined Boring bar Figure 1-2.The first true machine tool is thought to be the boring mill invented by John Wilkinson in 1774.It enabled James Watt to complete the first successful steam engine.The boring bar was rigidly supported at both ends,and was rotated by waterpower.It could bore a 36"diameter cylinder to an accuracy of less than 1/16".(DoALL Co.)