UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Forged Lathe Cutting-Off (Parting) Tool
A cutting-off or parting tool cuts a narrow groove in work turning on a lathe, and so cuts it off. It is forged from 1/2 × 1-inch tool steel 7 inches long, with a thin blade about 1½ inches long set flush with one side of the bar. Because it cuts only at its very end, the blade is made thickest at the edge and tapers back, so its sides clear the groove. It is hardened like a cold chisel and tempered to light yellow.
Ophakathi
1–2 hours
Imiyalelo
1
1
Cut and mark
Cut and mark
Cut the stock to length and centre-punch it.
Izinto zokwakha zalesi sinyathelo:
Induku eyisicaba yensimbi yamathuluzi1 ucezuAmathuluzi adingekayo:
Isibhoboza Sesikhungo
Isisiki esishisayo2
2
Draw out the blade
Draw out the blade
Mark with a 1/2-inch fuller and draw out the blade, fullered side down, with a hand hammer on the anvil's rounded edge or under a trip hammer.
Amathuluzi adingekayo:
Iziko lomkhandi wensimbi
I-fuller (insimbi yokwenza umsele)
Isando Sokukhanda
Isando esiphakanyiswayo
Udlawu lomkhandi wensimbi3
3
Taper the sides
Taper the sides
Taper the sides of the blade so it is thickest at the cutting end, giving clearance in the groove.
Amathuluzi adingekayo:
Isando Sokukhanda
Insimbi Yokukhandela4
4
Trim
Trim
Cut off the end of the blade at an angle with a hot chisel.
Amathuluzi adingekayo:
Isisiki esishisayo5
5
Harden and temper
Harden and temper
Harden the blade the same way as a cold chisel; heat it back past the blade and cool only the blade, then polish and let the colours run until the tip is light yellow, and cool it.
Amathuluzi adingekayo:
Iziko lomkhandi wensimbi
Ibhakede lokupholisa
Indwangu ye-emeryIzinto
1- Isibambeli
Amathuluzi Adingekayo
10- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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