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V-Slide Tubing Cutter: Two Slide Halves Held on the Ways by One Spring Clip, a Reamer on the Frame (Thewes, 1938)
William O. Thewes of North Ridgeville, Ohio, received US 2,130,934, dated 20 September 1938 and assigned to The Ridge Tool Company, for a cutter for thin copper and brass tubing. A C-frame carries a cutting wheel at one end and a feed screw at the other. The screw pushes a V-slide that holds the tube against the wheel. The slide is two halves on ways along the frame, held together by one V-shaped spring clip, which is also the face the tube bears on. A triangular reamer on the side of the frame cleans the cut end, and the frame is its handle.
We saw the frame from steel plate and pin the reamer in. His parts were die cast. All sizes are ours.
Hagati
About 3 days
Amabwiriza
1
1
Where the tube sits
Where the tube sits
Gupakira ikaye ya Jupyter…
2
2
Read US 2,130,934
Read US 2,130,934
"With my improved cutter the ways or guides are integral with the frame and are uninterrupted throughout the length of the frame, and the slide is held in close sliding engagement on the ways without the use of bolts or rivets."
3
3
Print the template
Print the template
Frame, slide half, end section, reamer and clip blank at 1:1 on A4, with the 8 and 28 mm tubes drawn in. print at 100 % (check the 50 mm bar).
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4
Saw out the frame
Saw out the frame
Glue the frame outline on 16 mm plate. Drill a row of holes inside the C, saw to them, and file to the line. Saw the 7 mm wheel slot down through the wheel post with two cuts, break out the middle and file it flat. Drill the 5 mm wheel pin and 4 mm tie pin holes across the slot. Drill 8.5 mm along the screw axis through the other post and tap it M10.
Ibikoresho by'iyi ntambwe:
Ikibaho cy'icyuma cyoroheje1 igiceIbikoresho bikenewe:
Umucumita w'Ibyuma
Amakariso Menshi
Icyuma Cyivumbura Gihagaze
Ifatiro ry'imashini
Ibyuma Byinshi byo Gucukura
Agakoresho ko gukata imizingo y'ibyuma
Igicukuzi cyo Gushyira Ikimenyetso
Igikoresho Gishushanya Imirongo
Ifatiro ry'Ameza
Amavuta yo gukata5
5
File the ways
File the ways
Along the bottom bar, between the posts, file a groove 2 mm deep and 4 mm high in both faces, 3 mm below the top edge. This leaves a T-shaped rib along the top: the ways. Keep it straight and the same all along, so the slide runs smoothly from end to end.
Ibikoresho bikenewe:
Amakariso Menshi
Ikusanyirizo ry'Amakariso MatoIfatiro ry'Ameza
Ikigereranyo cya Digitale cy'Amasentimetero 66
6
Turn the cutting wheel
Turn the cutting wheel
Chuck a tool steel bar and face it. Turn the end to 20 mm across for 10 mm, centre drill and drill a 5 mm hole 10 mm deep, and turn the edge to a 50 degree vee, 25 degrees each side, sharp in the middle of the 6 mm width. Part it off 6 mm long and take the burr off the hole.
Ibikoresho by'iyi ntambwe:
Inkoni y'icyuma cy'ibikoresho1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Igikoresho gifata cy'ibirenge 3 cy'imashini ihingura
Icyuma cyo kuca cy'itorero
Icyuma cyo guca ku ruziga
Agatsiko k'ibitobora hagatiIbyuma Byinshi byo GucukuraIkigereranyo cya Digitale cy'Amasentimetero 6
Amadarubindi y'umutekano7
7
Make the reamer
Make the reamer
Saw a triangle with 22 mm sides from 3 mm flat tool steel and drill its 4 mm hole. Grind each edge to a 60 degree bevel from both sides, so all three edges cut. Saw a 3 mm wide slot, 22 mm long and 8 mm deep, in the middle of the frame's bottom edge, 50 mm from the wheel end, and drill the 4 mm pin hole across it.
Ibikoresho by'iyi ntambwe:
Inkoni iringaniye y'icyuma cy'ibikoresho1 igiceIbikoresho bikenewe:
Umucumita w'Ibyuma
Imashini ihyeza yo ku mezaIcyuma Cyivumbura GihagazeIbyuma Byinshi byo GucukuraAmakariso MenshiAmadarubindi y'umutekano8
8
Harden and temper
Harden and temper
Heat the wheel and the reamer to a cherry red, until a magnet no longer sticks, and quench it in water, moving it about. Rub it bright with a stone, warm it on a piece of steel plate over the fire, and quench again as soon as it turns a light straw colour.
Ibikoresho bikenewe:
Iziko ryo Gucura
Amakoro y'Umucuzi
Magineti nto
Indobo yo gukonjesha
Amazi
Ibuye ryo gutyaza
Uturindantoki two gukomeza ibyumaAmadarubindi y'umutekano9
9
Make the slide halves
Make the slide halves
Saw two pieces of 10 mm plate to the slide outline, one the mirror of the other, and file the V. On the inner face of each, saw and file a pocket for half the screw head and a slot for its neck. Saw and file a step along the bottom edge of each half so its lip fits the groove under the ways (end section on the template). File a shallow notch in the outer face of each half, beside the V, for the clip's tongues.
Ibikoresho by'iyi ntambwe:
Ikibaho cy'icyuma cyoroheje1 igiceIbikoresho bikenewe:
Umucumita w'IbyumaAmakariso MenshiIkusanyirizo ry'Amakariso MatoIfatiro ry'AmezaIkigereranyo cya Digitale cy'Amasentimetero 6Igikoresho Gishushanya Imirongo10
10
Bend the V clip
Bend the V clip
Cut the clip blank from 0.5 mm spring steel strip. Bend the four tongues up at right angles, then fold the blank to 90 degrees on the dashed line, over the slide's V.
Ibikoresho by'iyi ntambwe:
Umurongo w'icyuma cya sipringi1 igiceIbikoresho bikenewe:
Umucumita w'IbyumaAmakariso MenshiIfatiro ry'Ameza
Inyundo ifite umutwe wa buruta11
11
Make the feed screw
Make the feed screw
Cut 120 mm of M10 threaded rod. Chuck it and turn the end to a 9 mm head 4 mm long on a 6 mm neck 3 mm long. Drill a 6 mm hole across the other end and push a 70 mm piece of 6 mm rod through it for the T-handle. Peen it both sides so it stays put.
Ibikoresho by'iyi ntambwe:
Inkoni ifite imirongo1 igice
Umurongo Uzengurutse w'Icyuma Cyoroshye1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyumaIgikoresho gifata cy'ibirenge 3 cy'imashini ihinguraIcyuma cyo kuca cy'itoreroIcyuma cyo guca ku ruzigaIcyuma Cyivumbura GihagazeIbyuma Byinshi byo GucukuraInyundo ifite umutwe wa burutaUmucumita w'Ibyuma12
12
Assemble
Assemble
Fit the wheel in its slot with the 5 mm pin, and the 4 mm tie pin above it, peened. Tap the reamer into its slot and pin it. Screw the feed screw through the boss. Put the halves on the ways from the sides, closing them round the screw head, and spring the clip over their V so its tongues snap into the notches. Oil the ways and the screw.
Ibikoresho by'iyi ntambwe:
Umusumari w'icyuma3 ibiceIbikoresho bikenewe:
Inyundo ifite umutwe wa burutaIgicukuzi cyo Gushyira IkimenyetsoIfatiro ry'AmezaAmavuta yo gukata13
13
Cut a copper tube
Cut a copper tube
Mark a copper tube and hold it in a vice with soft jaws, or by hand for small tubes. Open the screw, drop the cutter over the tube, and screw the slide in until the wheel just touches. Turn the cutter once round, give the screw about a quarter turn, and go on until the tube parts. The wheel should run in its own groove; the end should be square and not squeezed oval. Clean the inside of the end with a deburring tool.
Ibikoresho by'iyi ntambwe:
Umuyoboro w'umuringa1 igiceIbikoresho bikenewe:
Ifatiro ry'Ameza
Igikoresho cyo gukuraho ibisigazwa ku mperaIkigereranyo cya Digitale cy'Amasentimetero 614
14
Ream the end
Ream the end
Hold the frame like a T-handle, put the reamer's point in the cut end, and turn it a few times to take off the fin the wheel has turned in.
Ibikoresho bikenewe:
Ifatiro ry'Ameza15
15
Troubleshooting
Troubleshooting
Tubing cutter troubleshooting.
Flow
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16
History and honest limits
History and honest limits
**William O. Thewes** of North Ridgeville, Ohio, US 2,130,934, dated 20 September 1938, filed 4 November 1935, assigned to The Ridge Tool Company. Earlier slides needed notched ways, which weaken the frame, or bolts that come loose; he claimed "a V block reciprocable on the guideway and comprising two sections, and a face plate clamping said sections together". A later certificate corrects "same" to "frame" and "base" to "boss". His frame and slide were die cast and the reamer cast into the frame; ours are sawn from plate and the reamer is pinned. The patent gives no sizes; all of ours are ours.
Ibikoresho
8- 1 igiceUmwanya
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Ibikoresho bikenewe
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Dosiye z'igishushanyo
1Iki gishushanyo gikora
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