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MACHINE PARTS

MACHINE PARTS (FOR DCE / DIT). Books for reference. Notation: (i) N – engineering drawing ( By N.D.Bhatt) – Latest edition (ii) M – Machine drawing ( By N.D.Bhatt). MACHINE PARTS. 6. Nuts (N). Flank. Angle. Lead. out side diameter. Root / Core dia. Pitch.

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MACHINE PARTS

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  1. MACHINE PARTS (FOR DCE / DIT) Books for reference Notation: (i) N – engineering drawing ( By N.D.Bhatt) – Latest edition (ii) M – Machine drawing ( By N.D.Bhatt) MACHINE PARTS 6. Nuts (N)

  2. Flank Angle Lead out side diameter Root / Core dia Pitch Root Crest Nominal diameter NOMENCLATURE OF THREADS

  3. EXTERNAL THREAD INTERNAL THREAD

  4. T P TYPES OF THREADS 90 d T= d = 0.5P SQUARE THREAD

  5. TYPES OF THREADS 55° P d/6 D d D=0.96P d=0.64P WHITWORTH THREAD

  6. TYPES OF THREADS p T 29° d T=0.3707p d= 0.5p + 0.25 mm ACME THREAD

  7. TYPES OF THREADS d/8 P F D d 45° d/8 D = P d = 0.75P BUTTRESS THREAD

  8. TYPES OF THREADS P R D R=0.25P D=0.5P KNUCKLE THREAD

  9. 40 24 48 52 20 24 3 w 100 HEXAGONAL HEADED BOLT WITH HEXAGONAL NUT AND WASHER

  10. RIVETED JOINTS Rivets are used to fasten permanently two or more plates or pieces of metal .Joints made with rivets are called riveted joints. They are commonly used in ship building and for the Construction of steel buildings ,bridges ,boilers ,tanks, etc. Plates joined together by means of a riveted joint cannot be disconnected without Chipping –off rivet heads from one side of the joint Types of riveted joints Lap joint:- In a lap joint the plates to be connected over lap each other Butt joint:- In a butt joint edges of the plates to be connected butt against each other and the joint between them is covered by butt –plates

  11. Pr 1.5d Pr 1.5d t d t t 1.5d 1.5d Pd P P A A L A A Doubleriveted (zig zag) lap joint Doubleriveted lap joint

  12. 1.5d 1.5d L P A A Singleriveted butt joint

  13. FOUNDATION BOLTS These bolts are used for fixing machines to their foundations. Simple forms of these bolts can quickly forged from mild steel or wrought iron bar .These bolts are suspended in hole and cement grout is then poured to fill up the space around them

  14. EYE FOUNDATION BOLT D

  15. RAG FOUNDATION BOLT 120 48 72

  16. 24 ø24 16 105 36 LEWIS FOUNDATION BOLT

  17. 0.8D 1.5D 2D 2D 0.4D 1.5D LIFTING EYE-BOLT

  18. 2D D 2D D EYE BOLT

  19. TYPES OF NUTS D D 0.25D 2.2D Flanged nut

  20. 1.5D+3 0.5D 0.25D D D Cap nut

  21. 0.5D D D Dome nut

  22. 1.8D D D 0.2D Capstan nut

  23. 1.8D D 0.5D 1.5D Ring nut Wing nut

  24. 0.8D 0.8D 0.8D 0.8D 1.8D D D Hook bolt T-headedbolt 0.8D 0.8D D D Cup headed bolt Counter sunk headed bolt PREVENTION OF ROTATION OF BOLTS

  25. Cup headed bolt Square headed bolt Cheese headed bolt

  26. LOCKING ARRANGEMENT FOR NUTS SPLIT-PIN

  27. 0.6D D D LOCK NUT OR CHECK NUT

  28. NUT BOLT WITH SPRING WASHER

  29. CASTLE NUT WITH A SPLIT PIN

  30. SLOTTED NUT WITH A SPLIT PIN

  31. COTTER JOINT

  32. KNUCKLE JOINT

  33. FLANGE COUPLING

  34. PROTECTIVE FLANGE COUPLING

  35. FOOT STEP BEARING BUSHED BEARING

  36. PLUMMER BLOCK

  37. PREVENTING ROTATION OF BRASSES By making a step rectangular on the one outside and fitting inside a corresponding hole

  38. SNUGS PREVENTING ROTATION OF BRASSES By snugs at the side

  39. SNUGS PREVENTING ROTATION OF BRASSES By snugs at the top fitting inside the cap. the oil hole is drilled inside a corresponding hole.

  40. PREVENTING ROTATION OF BRASSES by making the step octagonal on the outside and fitting inside a corresponding hole.

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