UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Hacksaw: Bent and Flattened Frame, Bi-Metal Blade
A hacksaw is a C-shaped frame holding a narrow blade under tension from a screw. In a 1936 patented frame, each upright is made from a piece of wire rod, bent to shape and then pressed, rolled or hammered flat, with its end flattened at right angles to carry the blade, and the uprights are held in a channel-section top member. Bi-metal blades, patented in 1976, start as a metal block with a central strip of cutting tool steel; it is rolled flat into a sheet, the sheet is divided into two blades whose edges are the tool steel, the teeth are cut in that edge, and the blades are hardened by heating, quenching and tempering. The teeth are given a wavy set.
Osezingeni eliphezulu
Factory process
Imiyalelo
1
1
Bend and flatten the uprights
Bend and flatten the uprights
Bend a piece of wire rod to the upright's shape, then press, roll or hammer its horizontal part and most of its upright part flat; flatten the end at right angles to take the blade.
Izinto zokwakha zalesi sinyathelo:
Ugoqo lwezinduku zocingo lwensimbi1 as requiredAmathuluzi adingekayo:
Isando esiwayo esinezikhunta zokukhanda2
2
Assemble the frame
Assemble the frame
Fit the uprights into the channel-section top member and fit the tensioning screw.
Izinto zokwakha zalesi sinyathelo:
Umucu wensimbi onesimo se-channel1 ucezu
Isikulufu sokuqinisa esine-wing nut1 ucezu3
3
Make the blade stock
Make the blade stock
Roll a block with a central strip of tool steel flat into a sheet, and divide it into two blades with the tool steel along one edge.
Izinto zokwakha zalesi sinyathelo:
Induku eyindilinga yensimbi esheshayo (HSS)1 as required
Umucu wensimbi enekhabhoni1 as requiredAmathuluzi adingekayo:
Umshini wokugingqa insimbi4
4
Cut and harden the teeth
Cut and harden the teeth
Cut the teeth in the tool-steel edge, set them in a wave, and harden the blades by heating, quenching and tempering.
Amathuluzi adingekayo:
Umshini wokusika amazinyo esaha
Isithando sokuqinisa nokuthambisa umucuIzinto
5- 1 as requiredIsibambeli
- Isibambeli
- Isibambeli
- 1 as requiredIsibambeli
- 1 as requiredIsibambeli
Amathuluzi Adingekayo
4- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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