UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Knurled Worm Gear for an Adjustable Spanner, Thread Cut to the Rack
The worm of an adjustable spanner is a short screw on a pin: its thread engages the rack on the movable jaw, so turning it with the thumb opens or closes the jaw, and its rim is knurled for grip (Haist, US 2,112,840, 1938). This one is turned from mild steel, its thread cut on the lathe to the pitch of the jaw's rack. Method and sizes are ours.
The picture: Haist's patent drawing.
Hejuru
Half a day
Amabwiriza
1
1
Measure the rack
Measure the rack
Measure the pitch of the teeth on the movable jaw's rack with the pitch gauge, and the height of the opening the worm sits in.
Ibikoresho bikenewe:
Igipimo cy'intera y'imirya
Ikigereranyo cya Digitale cy'Amasentimetero 62
2
Turn and bore
Turn and bore
Chuck the mild steel bar, face it, turn it to the worm's outside diameter, and centre-drill and drill it through for the pin.
Ibikoresho by'iyi ntambwe:
Umutsi w'icyuma cyoroshye1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Igikoresho gifata cy'ibirenge 3 cy'imashini ihingura
Icyuma cyo kuca cy'itorero
Agatsiko k'ibitobora hagati
Ibyuma Byinshi byo Gucukura
Amavuta yo gukataIkigereranyo cya Digitale cy'Amasentimetero 6
Amadarubindi y'umutekano3
3
Cut the thread
Cut the thread
Set the lathe's gearing to the rack's pitch and single-point cut the thread along the worm's length, testing against the rack until it runs smoothly.
Ibikoresho bikenewe:
Imashini yo guhinguza icyumaIcyuma cyo kuca cy'itoreroAmavuta yo gukataIgipimo cy'intera y'imirya4
4
Knurl the rim
Knurl the rim
Run the knurling tool lightly over the thread crests to roughen them for the thumb, without closing the thread.
Ibikoresho bikenewe:
Imashini yo guhinguza icyuma
Igikoresho cyo gushushanya imirongo ku byumaAmavuta yo gukata5
5
Part off and fit
Part off and fit
Part the worm off a little short of the opening's height, file off the burrs, and check it turns freely on its pin in the opening.
Ibikoresho bikenewe:
Icyuma cyo guca ku ruziga
Amakariso MenshiIkigereranyo cya Digitale cy'Amasentimetero 6Ibikoresho
1- 1 igiceUmwanya
Ibikoresho bikenewe
12- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.