IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
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.
Àárín
1–2 hours
Ìlànà
1
1
Cut and mark
Cut and mark
Cut the stock to length and centre-punch it.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá pẹlẹbẹ irin irinṣẹ́1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Igi Àmì Àárín
Ìlù gbígbóná2
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.
Àwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Fuller (irin ìgbẹ́ ìlà)
Òòlù Alágbẹ̀dẹ
Òòlù tí a ń jù sílẹ̀
Ẹmú alágbẹ̀dẹ3
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.
Àwọn irinṣẹ́ tí a nílò:
Òòlù Alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ4
4
Trim
Trim
Cut off the end of the blade at an angle with a hot chisel.
Àwọn irinṣẹ́ tí a nílò:
Ìlù gbígbóná5
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.
Àwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Àpótí ìtutù
Aṣọ emeryÀwọn ohun-èlò
1- Àyè
Àwọn irinṣẹ́ tó nílò
10- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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