Презентация по английскому языку на тему "Machine tools"

• 1 слайд

  Machine-tools- a measure of
  Man’s progress
  

• 2 слайд

  The variety and combinations
  of machine-tools today are unlimited
  

• 3 слайд

  Some of them are very small and can be mounted on a work bench but others are so large that we have to construct special buildings to house them
  

• 4 слайд

  There are some basic
  operations at any workshop
  

• 5 слайд

  They are turning, drilling, threading, etc
  

• 6 слайд

  The main machine-tool of such a workshop is the multipurpose lathe
  

• 7 слайд

  What is a lathe?
  

• 8 слайд

  It is a power-driven machine with special tools which can cut or form metal parts
  

• 9 слайд

  The metal that cuts another metal must be very hard and so tools should be made of very hard steel alloys
  

• 10 слайд

  The tool itself is very small in comparison with the mechanism that is to direct it
  

• 11 слайд

  
  Technological
  accuracy o
  progress improves
  f machine-tools
  

• 12 слайд

  Today's equipment can produce parts with very high accuracy
  

• 13 слайд

  One can find a number of machine-tools that can measure and inspect their
  production themselves - machine-tools that are to handle the parts mechanically and
  automatically
  

• 14 слайд

  Such machines can hold the parts which are to be measured and are able to
  indicate precise measurements themselves
  

• 15 слайд

  A great many of such "clever" machines can be found today in our industry.
  Automation is one of the main factors of engineering progress
  

• 16 слайд

  Automation is one of the main factors of engineering progress
  

• 17 слайд

  Flexible production lines form the basis for automated workshops
  

• 18 слайд

  The main principle of such a flexible line is the fact that it can be switched over
  from one product to another, which has a similar structure but a different outline,
  almost instantaneously
  

• 19 слайд

  It is equally efficient in conditions to both mass and small-batch production
  and will serve to increase the productivity