saws final

• Sawing machines constitute some of the most important machine tools found in the

  machine shop.
• Sawing machines are used in metalworking industries.
• 3. The types of sawing machines are: Reciprocating Saw, Band Saw, Circular Saw
• 4. Two types of reciprocating saw: Manual Hacksaw and Power Hacksaw.
• 5. Manual Hacksaw uses hand for operation.
• 6. Power Hacksaw uses machine for operation.
• 8. Base supports all other elements of the machine.
• 7. Base is the lowermost and rigid part of the power saw machine.
• 9. Vise is used to hold the workpiece.
• 10. One of the jaws is fixed and other is moving with the help of clamping mechanism.
• 11. The movable jaw can be swiveled to 45° on either side for clamping of work piece of

  different sizes.
• 12. The movable jaw of the machine can be moved by using screw and nut arrangement.
• 13. Frame holds the hacksaw blade.
• 14. Blades are responsible for cutting the workpiece.
• 15. Driving Head is utilized to house the main driving motor.
• 16. Coolant is used to dissipate the heat due to friction.
• 17. Coolant is used to dissipate the heat due to friction.
• 18. The workpiece should be fastened securely in the vise.
• 19. For power hacksaw operation, use 130 rpm for mild steel.
• For power hacksaw operation, use 90 rpm for tool steel (annealed).
• 21. For power hacksaw operation, use 60 rpm for mild steel (unannealed).
• 22. For power hacksaw operation, use 130 rpm for mild steel.
• 23. For power hacksaw operation, use 90 rpm for tool steel (annealed).
• 24. For power hacksaw operation, use 60 rpm for mild steel (unannealed).
• 25. Two type of band saw are Horizontal Band Saw and Vertical Band Saw.
• 26. Horizontal Band Saw is a type of band saw that is portable and hand operated.
• 27. Vertical Band Saw is a type of band saw that is fixed on the foundation and machine

  operated.
• 28. Band saw employs the continuous action of an endless high speed toothed blade.
• 29. One advantage of bandsaw over hacksaw is: it can irregular curves in metals.
• 30. Band saw controls contains the switch to stop and resume the band saw operation.
• 31. Column holds the head of band saw.
• 32. Column encloses the controls to prevent electrical shocks.
• 33. Wheels hold the band saw blade.
• 34. Workpiece Table is the place where the workpiece is being cut.
• 35. Band saw bed contains the lower wheel.
• 36. Bed encloses the electric motor that drives the power band saw.
• 37. Bed holds the band saw workpiece table.
• 38. Use fine teeth for small and thin-wall section of metal.
• 39. Use fine teeth for hard metals with low machinability.
• 40. Use slightly coarse teeth for soft, easily machined metals.