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
Broaching a Keyway: A Steel Pulley Turned, Bored and Keyed
A broach is a long cutter whose teeth get a little taller one after another, so one push through a hole cuts a finished shape. Broaching began in the 1850s for exactly this job: cutting the keyway in a pulley or gear so it can be locked to its shaft.
Àárín
Half a day
Ìlànà
1
1
Watch: what is broaching?
Watch: what is broaching?
Broaching types, the machine and the broach's teeth, in a short course preview.
2
2
Turn the pulley
Turn the pulley
Saw a slice of round bar, face both sides and turn the rim to size on the lathe.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá rírọ irin rírọ̀1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ayùn Irin
Ẹ̀rọ Ìyí Irin
Òróró gígé
Kálípà Fáníà3
3
Bore it for the shaft
Bore it for the shaft
Drill and bore the centre to fit the shaft, and break the sharp edges.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ Ìyí Irin
Ọ̀pá gígé inú ihòKálípà Fáníà
Àkójọ Ìfá4
4
Set up the horn and broach
Set up the horn and broach
Slide the horn (the slotted bushing) into the bore and set the pulley flat on the arbor press table. Drop the keyway broach into the horn's slot, teeth facing the bore wall, small end first.
Àwọn irinṣẹ́ tí a nílò:
Bushing atọ́nà broach
Broach ihò kọ́kọ́rọ́
Ẹ̀rọ ìtẹ̀ ọwọ́5
5
Push it through in one stroke
Push it through in one stroke
Oil the broach and press it straight through in one steady stroke. Each tooth cuts a little deeper than the last, so the keyway comes out finished.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ ọwọ́Broach ihò kọ́kọ́rọ́Òróró gígé6
6
Clean and check
Clean and check
Take out the broach and horn, clear the chips and check the key slides in snugly.
Àwọn irinṣẹ́ tí a nílò:
Kálípà FáníàÀkójọ ÌfáÀwọn ohun-èlò
1- 1 ẹyọÀyè
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