1 / 23

Manufacturing Methods

Manufacturing Methods. Technology II – Jan Tomíček. Machining operations. Machined parts Rotational – cylindrical (shafts) or disk-like Nonrotational(Prismatic) – block-like or plate-like Elementary shapes Rotational, planes, contoured. Examples. Machining operations:. creating a shape

kristopher
Download Presentation

Manufacturing Methods

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Manufacturing Methods Technology II – Jan Tomíček

  2. Machining operations • Machined parts • Rotational – cylindrical (shafts) or disk-like • Nonrotational(Prismatic) – block-like or plate-like • Elementary shapes • Rotational, • planes, • contoured.

  3. Examples

  4. Machining operations: creating a shape • generating–by the feed trajectory of the tool • forming–by the geometry of the tool • combination– of both processes

  5. Machining – generating

  6. Machining – forming

  7. Machining – combination of forming and generating

  8. Classification of manufacturing methods • Materialremovalprocesses

  9. A CUTTING TOOL • single-point tool (a) • multiple cutting edge tool (b)

  10. CUTTING EDGE • face - rake angle RA α • flank - relief angle ERAγ

  11. Manufacturing Methods BROACHING

  12. BROACHING • a multiple tooth cutting tool • the forming tool moves linearly relative to the workpiece in the direction of the tool axis • Movementthroughoralongthe part

  13. Broaching tool

  14. External broaching tool

  15. Broaching process • on apress – the tool is pushed • on a broaching machine – the tool is pulled • Usingspecialmachine– stationarybroach

  16. Broaching machines • vertical► • horizontal▼

  17. Broached shapes • Internal – holes and other round shapes, keyways, profiles, gears • Need leading hole to place the pilot • External – faces, T-shape, co-planar surfaces, gears • Holes calibration – Broach diameter slightly bigger than the hole.

  18. Keyway broaches

  19. Rotary broaching • internal

  20. Rotary broaching - limitations Broach length Spiraling

  21. Broaching limitions • Machined volume • Limited by chip thickness long broach • Speed • No wear demands  low temperature, forces • Tool costs • Expensive production long tool life

  22. Broaching – tolerances and surface finish

More Related