UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
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.
Osezingeni eliphezulu
Two days for a few sizes
Imiyalelo
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.
Izinto zokwakha zalesi sinyathelo:
Induku enezinhlangothi eziyisishiyagalombili yensimbi yamathuluzi1 ucezuAmathuluzi adingekayo:
Umshini Wokuphendula Insimbi
Isethi Yamathuluzi e-HSS Okuphendula Izinkuni
Isilinganiso semisonto
I-Caliper Yedijithali Yamayintshi Ayi-6
Uwoyela wokusika2
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.
Izinto zokwakha zalesi sinyathelo:
Amanzi10 amalitha
Amalahle1 as requiredAmathuluzi adingekayo:
Insimbi yokuhlikihla izinsimbi
Isibambo Sebhentshi
Iziko lomkhandi wensimbi
Ibhakede lokupholisa
Udlawu lomkhandi wensimbi
Izibuko zokuphepha3
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.
Izinto zokwakha zalesi sinyathelo:
Induku eyisicaba yensimbi yamathuluzi1 ucezuAmathuluzi adingekayo:
Ibhola lesandlaIsibambo SebhentshiInsimbi yokuhlikihla izinsimbiIziko lomkhandi wensimbiIbhakede lokupholisa4
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.
Izinto zokwakha zalesi sinyathelo:
Ibha Eyisicaba Yensimbi Ethambile1 ucezuAmathuluzi adingekayo:
Iziko lomkhandi wensimbiInsimbi yokuhlikihla izinsimbiIbhola lesandlaIsibambo Sebhentshi5
5
Tap drill sizes
Tap drill sizes
Ilayisha incwadi ye-Jupyter…
Izinto
5- Isibambeli
- 10 amalithaIsibambeli
- 1 as requiredIsibambeli
- Isibambeli
- Isibambeli
Amathuluzi Adingekayo
12- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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