UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Taps and Dies Cut on the Lathe, with Wrench and Stock
A tap cuts the thread inside a hole; a die cuts it on a rod. Makers made their own in the 16th and 17th centuries. Cut the thread on tool steel in the screw-cutting lathe, file flutes so it cuts, harden it, and use the finished tap to cut the thread in a steel blank that becomes the matching die. A T-wrench turns the tap, a stock holds the die.
The picture: a tap held in a T-wrench.
Hejuru
Two days for a few sizes
Amabwiriza
1
1
Turn and thread the tap
Turn and thread the tap
Turn tool steel to the thread's major diameter with a square on the end for the wrench. Cut the thread in the lathe at the right pitch and check it with the gauge. Taper the first 8–10 threads for a taper tap, or 3–5 for a plug tap.
Ibikoresho by'iyi ntambwe:
Inkoni ifite impande umunani y'icyuma cy'ibikoresho1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Ibikoresho byo Kuzenguruka Ibiti bya HSS
Ikipimo cy'imizingo
Ikigereranyo cya Digitale cy'Amasentimetero 6
Amavuta yo gukata2
2
Flute and harden the tap
Flute and harden the tap
File three or four lengthwise flutes along the thread so it has cutting edges and room for chips. Harden in water from cherry red and temper to brown.
Ibikoresho by'iyi ntambwe:
Amazi10 litiro
Amakara1 as requiredIbikoresho bikenewe:
Ikariso ry'Icyuma
Ifatiro ry'Ameza
Uruganda rw'umucuzi
Indobo yo gukonjesha
Amafashi y'umucuzi
Amadarubindi y'umutekano3
3
Cut the die with the tap
Cut the die with the tap
Drill a flat tool-steel blank to the tap drill size and run the finished tap through it with oil. Drill clearance holes round the thread so it cuts, saw one side open so it can be set, then harden and temper it to brown.
Ibikoresho by'iyi ntambwe:
Inkoni iringaniye y'icyuma cy'ibikoresho1 igiceIbikoresho bikenewe:
Igikoresho cyo gutobora gikoreshwa n'intokiIfatiro ry'AmezaIkariso ry'IcyumaUruganda rw'umucuziIndobo yo gukonjesha4
4
Wrench and stock
Wrench and stock
Forge and file a T-wrench with a square hole for the tap, and a die stock from flat bar with a round recess for the die, two handles and a set screw.
Ibikoresho by'iyi ntambwe:
Umurongo ugororotse w'icyuma cyoroshye1 igiceIbikoresho bikenewe:
Uruganda rw'umucuziIkariso ry'IcyumaIgikoresho cyo gutobora gikoreshwa n'intokiIfatiro ry'Ameza5
5
Tap drill sizes
Tap drill sizes
Gupakira ikaye ya Jupyter…
Ibikoresho
5- Umwanya
- 10 litiroUmwanya
- 1 as requiredUmwanya
- Umwanya
- Umwanya
Ibikoresho bikenewe
12- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
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