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UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
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UBUMENYI
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IBYAMBARWA
Swivel-Blade Deburring Tool: Roth, 1952
Cutting, punching, sawing and grinding leave burrs on the edges of metal, plastic and pressed wood. A knife or file scrapes them off unevenly, and only in skilled hands. Otto W. Roth of Los Angeles patented a swivel-blade cutting tool in 1952, US 2,598,443. A short hooked blade on a shaft turns freely in a sleeve in the handle, bent at less than a right angle. A rounded head at its tip rides on the face of the work and sets the blade's angle, so as the tool is drawn along an edge or round a punched hole the blade follows it and shaves the burr off evenly.
Hagati
Workshop process
Amabwiriza
1
1
Handle and sleeve
Handle and sleeve
Bore the handle axially and press in a sleeve or bushing; a pressed-in part of the sleeve bears on the shaft lightly so it does not slip out, and its outer end turns over against the handle's end.
Ibikoresho by'iyi ntambwe:
Umuhini w'igikoresho ufite umwobo uri ku murongo-shingiro1 igice
Agapfunyiko ka roulement izunguruka1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Ifatiro ry'Ameza2
2
Blade
Blade
Form the blade on the shaft's end at an angle of less than 90°, with a knife edge between two flat sides and a rounded head at the tip that overhangs the edge.
Ibikoresho by'iyi ntambwe:
Icyuma gifite ingobe gikuraho ibisigazwa ku nkoni1 igiceIbikoresho bikenewe:
Imashini ihyeza yo ku meza3
3
Swivel fit
Swivel fit
Put a collar on the shaft to bear against the sleeve's end, and insert the shaft so the blade rotates freely. (In the alternative form, a thrust bearing at the base of the bore and a flared bearing sleeve give a smoother swivel, and a cap closes the handle.)
Ibikoresho by'iyi ntambwe:
Impeta isunika1 igiceIbikoresho
4- Umwanya
- Umwanya
- 1 igiceUmwanya
Ibikoresho bikenewe
3- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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