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Technology II

Technology II. Manufacturing metrhods. THREADS. THREAD S CUTTING. Methods classification: a) according to the object: external thread s cutting internal thread s cutting b) according to the operation: manual methods machine methods c) according to the process: machining

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Technology II

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  1. Technology II Manufacturingmetrhods

  2. THREADS

  3. THREADS CUTTING Methods classification: a) according to the object: • external threads cutting • internal threads cutting b) according to the operation: • manual methods • machine methods c) according to the process: • machining • forming/rolling

  4. EXTERNAL THREADS CUTTING • machining: • threading on a lathe (engine l., NC lathe) • threading with threading die heads (turret lathe, screw machine, threading machine, NC lathe) • milling • grinding (finishing a thread) • manual cutting – with the threading die • rolling – with the rolling dies: • on a lathe • on a rolling machine

  5. Threading on a lathe • the most versatile and fundamentally simple method with the single-point tool; • the tool moves longitudinally in relation to the rotationof the workpiece – this determines the lead of the thread

  6. A lathe - threading

  7. Threading on lathe - types

  8. Threadturning Conventionalmachine With a turningtool http://www.lkctraining.co.uk/

  9. Threadturning CNC lathe Turningtool http://www.youtube.com

  10. Threadturning Swiss type automaticlathe With a turningtool http://www.youtube.com

  11. Threadturning CNC lathe Toolwith CBN insert (vc= 100 m.min.-1) http://www.misan.cz

  12. Threading with the die heads

  13. Thread milling cutters • single-form cutter – tilted at the helix angle of the thread, then rotating cutter moved in parallel way with the axis of the simultaneously rotating workpiece • multiple-form cutter – set in parallel with the axis of the workpiece – the thread is completed in one revolution of the workpiece

  14. Thread milling

  15. Threadmilling • Machine • Tool (cutter)

  16. CNC thread milling

  17. CNC thread milling

  18. CNC thread milling

  19. CNC thread milling

  20. CNC thread milling

  21. Threadsmilling • Endmill on CNC machining center http://www.misan.cz

  22. Externalthreadmilling Endmill on CNC machining center http://www.misan.cz

  23. Externalthreadmilling Endmill on CNC machining center http://www.misan.cz

  24. Externalthreadmilling Endmill on CNC machining center http://www.misan.cz

  25. Externalthreadsmiling Circularmilling Brushmillusage

  26. Externalthreadmiling • Okružovacím způsobem http://www.leistritz.com/

  27. Externalthreadsmiling Circularmilling http://www.coromant.sandvik.com/

  28. Externalthreadsmiling Circularmilling, Swiss type lathe http://www.tornos.ch

  29. Threads grinding

  30. Threadsgrinding • One-profile grindingwheel (Higherpitchvalues) • Multiprofile (complete) Gr. Wheel (higherproductivity, smallptichonly)

  31. Threadsgrinding • One-profile grindingwheel (Higherpitchvalues) • Multiprofile (complete) Gr. Wheel (higherproductivity, smallptichonly)

  32. Threadsgrinding – one profile http://www.luren.com.tw/

  33. Threadsgrinding – multi profile http://youtu.be/t1mN76Narhk

  34. Radial thread rolling –on a die machine Methods according the dies function: • plunge method • traverse method

  35. Thread rolling – on a rolling machine

  36. Threadrolling - tools

  37. Thread rolling – on a die machine

  38. Axial thread rolling – on a lathe

  39. Thread rolling – on a lathe

  40. Externalthreadrolling - properties http://www.fette.com Turning Milling Fine turning Rolling

  41. Externalthreadrolling - properties http://www.fette.com Threadchaser – full profile cuttingtool

  42. Manual threading

  43. Threading dies • half die → • button die ↓

  44. INTERNAL THREADS CUTTING • on a lathe with inside thread-cutting tool(engine lathe, NC lathe); • with a tapand holder (manually; a lathe, a special threading machine tool); • by milling with a special cutter– similar process to producing external thread; • with aforming tapand holder (manually; a lathe, a special threading machine tool).

  45. Threading on a lathe

  46. Internalthreadmilling http://www.emugefranken.cz/

  47. Internalthreadmilling http://www.emugefranken.cz/

  48. Internalthreadmilling http://www.emugefranken.cz/

  49. Thread tapping A tap – a tool with flutes creating cutting edges and providing space for chips and cutting fluid Operation: • manual or • at a machine tool

  50. Threadtapping http://www.emugefranken.cz/

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