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Rack-and-Pinion Router With a Zero-Set Knob: Two Knobs on One Hollow Pinion, Set to Zero on the Work (Rees, 1969)
Spencer C. Rees of Pickens, South Carolina, received US 3,466,973, dated 16 September 1969, for The Singer Company. A rack screwed to the motor housing is moved by a pinion through a window in a box on the base. The pinion is a hollow shaft running in one bore through the box's two side lugs, with a knob at each end. One knob turns it. The other, a zero-set knob with graduations, slips on its sleeve against an O-ring, so it can be set to zero with the bit touching the work. One screw through the middle holds it all together. Only the pinion shaft was metal; the rest was moulded.
We print every part in PETG round a small DC motor. The sizes are ours.
Hejuru
About 3 days
Amabwiriza
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What one turn of the knob does
What one turn of the knob does
Gupakira ikaye ya Jupyter…
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Read US 3,466,973
Read US 3,466,973
"The zero-set knob 40 has a reduced diameter portion 51 which carries circumferentially-spaced graduation marks 52 on its surface." "In the above-described structure it will be noted that the only metallic part required is the pinion shaft 37 which is a relatively simple two-diameter piece."
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Print the base
Print the base
The base 10: the split ring with clamp lugs, the box 28 for the rack with its two lugs 50 and stepped bore 33, the window 36, two legs 11 down to the plate 12 with its aperture, and two handle arms. Print it plate down. PETG, 0.2 mm layers, 40 % infill, 5 walls.
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Print the motor housing
Print the motor housing
The housing 19: a tube for a 42 mm motor, 56 mm outside, a ledge with an 18 mm hole and two M4 holes, and two M3 holes for the rack. Print it ledge down. PETG, 0.2 mm layers, 40 % infill, 5 walls.
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Print the small parts
Print the small parts
One plate: the rack 29 (module 1.5), the hollow pinion shaft 37 with its toothed (splined) part, bearing part and end ribs, the adjusting knob 38 with grooves, the flanged sleeve 39, the zero-set knob 40 with 20 graduations and an O-ring groove, and the cover plate 53 with its window 55 and mark 56. PETG, 0.2 mm layers, 40 % infill, 5 walls.
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Motor in the housing
Motor in the housing
Fit the collet adapter on the motor's shaft, stand the motor in the housing on its ledge and screw it down with two M4 screws; wire it through a toggle switch to the DC supply. Screw the rack to the housing's front with two M3 screws.
Ibikoresho by'iyi ntambwe:
Fibere ya PETG1 igice
Moteri y'amashanyarazi1 igice
Motor Shaft Collet Adapter1 igice
Insimburangingo Ifite Umutwe Uzengurutse2 ibice
Ibitorezo by'imashini2 ibice
Buto y'agati1 igice
Insinga yo guhuza1 igice
Umuyoboro wigabanya ku bushyuhe1 igiceIbikoresho bikenewe:
Imashini icapa 3D ikoresha umugozi (FDM)
Inkomoko y'amashanyarazi y'umurongo umwe
Icyuma cyo gusudira cy'amashanyarazi
Umutwe w'imfunguzo z'impande esheshatu
Ikusanyirizo ry'ibitorezi
Igikoresho cyo gukuraho ibisigazwa ku mpera7
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Base and handles
Base and handles
Turn two hardwood handles 17 and bolt one to each arm with an M8 bolt. Slide the housing into the base with the rack in the box's channel, and put an M5 screw with a wing nut through the clamp lugs.
Ibikoresho by'iyi ntambwe:
Ikibaho cy'Igiti Gikomeye1 igice
Icyegeranyo cy'inyuzi z'impande esheshatu2 ibice
Umupira w'Impande Esheshatu3 ibiceInsimburangingo Ifite Umutwe Uzengurutse1 igice
Inoti y'amababa1 igiceIbikoresho bikenewe:
Imashini ikerekeza ibiti
Icyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo Gucukura
Isupana ihindurwa8
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Pinion, knobs and cover
Pinion, knobs and cover
Push the pinion shaft through the box's bore from the right, its toothed part through the window meshing with the rack, its bearing part in the right lug. Fit the O-ring in the zero-set knob's groove, push the sleeve into the knob, and slide them onto the shaft's toothed end from the left, the sleeve in the left lug. Fit the adjusting knob on the right end, its grooves on the shaft's ribs. Pass a long M4 screw through knob, shaft and sleeve with a washer, into a nut in the sleeve, and tighten it until the knobs have only a little end play. Screw the cover over the box with two M3 screws.
Ibikoresho by'iyi ntambwe:
Impeta ya O y’ikoroboyi1 igiceInsimburangingo Ifite Umutwe Uzengurutse1 igice
Uruziga Rurambuye1 igiceUmupira w'Impande Esheshatu1 igiceIbitorezo by'imashini2 ibiceIbikoresho bikenewe:
Umutwe w'imfunguzo z'impande esheshatuIkusanyirizo ry'ibitorezi9
9
Set zero and rout
Set zero and rout
Fit a bit. Loosen the clamp, turn the adjusting knob until the bit's tip touches the work, then turn the zero-set knob alone until its zero lines up with the cover's mark. Turn the adjusting knob to the depth wanted, read off the graduations, and clamp. Rout with both hands on the handles.
Ibikoresho bikenewe:
Agasanduku k'ibinyo by'imashini ibazaIkibaho cy'Igiti Gikomeye
Igifashe cy'inkoni
Ikigereranyo cya Digitale cy'Amasentimetero 6
Amadarubindi y'umutekano10
10
Troubleshooting
Troubleshooting
Rack and pinion router troubleshooting.
Flow
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History and honest limits
History and honest limits
**Spencer C. Rees** of Pickens, South Carolina, assignor to The Singer Company, US 3,466,973, dated 16 September 1969, filed 8 January 1968. He claimed a rack on the motor housing, "a pair of lugs formed on the base in fixed spaced relation on opposite sides of the rack and having aligned cylindrical apertures", a hollow pinion shaft, an adjusting knob, a flanged sleeve, "a zero-set knob frictionally coupled to said sleeve", and "single fastening means" through them all. His pinion shaft was metal and the rest moulded; ours is all printed. His motor ran on mains; ours is a small DC motor. He gives no sizes; every size here is ours.
Ibikoresho
14- 1 igiceUmwanya
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- 1 igiceUmwanya
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- 1 igiceUmwanya
Ibikoresho bikenewe
15- Umwanya
- Umwanya
- 1 vendor sell this, none ship to you yetUmwanya
- Umwanya
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- 1 vendor sell this, none ship to you yetUmwanya
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Dosiye z'igishushanyo
3Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
Rack-and-Pawl Plunge Router: The Motor Rides One Post on a Spring and Steps Down a Tooth at a Time (Carter, 1925)
na Forge
Ububaji
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0
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Three-Legged Router: A T-Frame on the Table Beside the Work, Its Depth Set by a Knob While Cutting (Willard & Young, 1939)
na Forge
Industry 3.0 — Assembly Line & Mass Production (1913)
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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.