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
Nylon Insert Lock Nut: a Nylon Collar Crimped into a Steel Nut
A nut that will not shake loose. A nylon collar sits in a recess at the top of the nut; its hole is a little smaller than the bolt, so the bolt presses its own thread into the nylon and the nylon grips it. Sauer (US 2,450,694, 1948) chose nylon over the older fibre collar: it hardly takes up water and still locks after 50 to 100 re-uses. The collar is held as Swanstrom's patent (US 2,153,681, 1939) shows: the recess wall is pressed in and crimped over it. Size M10 is ours.
The picture: a nylon-insert lock nut (Wikimedia Commons).
Àárín
Half a day
Ìlànà
1
1
Cut and turn the blank
Cut and turn the blank
Saw a blank from hex bar. On the lathe, turn the top part round, with a wall that tapers toward the top.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá onígun mẹ́fà irin rírọ̀1.5 cmÀwọn irinṣẹ́ tí a nílò:
Ayùn Irin
Ẹ̀rọ Ìyí Irin
Ohun ìgé ẹ̀rọ ìyí
Kálípà Fáníà2
2
Drill and tap
Drill and tap
Drill through and tap an M10 thread.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ Ìlùkòkò Onídúró
Ìtò irinṣẹ́ ìgé iháKálípà Fáníà3
3
Counterbore the top
Counterbore the top
Counterbore the top of the bore with an ordinary twist drill. It leaves a recess with a conical floor.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ Ìlùkòkò OnídúróKálípà Fáníà4
4
Mould the nylon collar
Mould the nylon collar
Mould a nylon washer that fits the recess, with a hole somewhat smaller than the bolt's outside thread diameter. Nylon is thermoplastic, so scrap can be moulded again.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àwọn kóró nylon2 gÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ ṣíṣuKálípà Fáníà5
5
Seat and crimp
Seat and crimp
Push the collar down onto the recess floor. In the press, squeeze the recess wall inward against the collar and bend its top edge over it.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ ọwọ́6
6
Try it on a bolt
Try it on a bolt
Screw the nut onto a bolt. It runs freely until the bolt reaches the collar, then turns stiffly as the bolt cuts a thread in the nylon.
Àwọn irinṣẹ́ tí a nílò:
Bọ́ọ̀tì onígun mẹ́fà - ìpele 8.8Àwọn ohun-èlò
2- Àyè
- Àyè
Àwọn irinṣẹ́ tó nílò
9- Àyè
- Àyè
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