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Hacksaw: Bent and Flattened Frame, Bi-Metal Blade
Dwight E. Priest · Public domain (expired patent)
Emma

Imeundwa na

Emma

11. Oktoba 2026SE
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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.
Juu
Factory process

Maagizo

1

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.

Vifaa kwa hatua hii:

Mzunguko wa fimbo ya waya ya felejiMzunguko wa fimbo ya waya ya feleji1 as required

Zana zinazohitajika:

Nyundo ya kudondosha yenye kalibu za kufuaNyundo ya kudondosha yenye kalibu za kufua
2

Assemble the frame

Fit the uprights into the channel-section top member and fit the tensioning screw.

Vifaa kwa hatua hii:

Utepe wa feleji wenye umbo la mferejiUtepe wa feleji wenye umbo la mfereji1 kipande
Skrubu ya kukaza yenye nati ya mabawaSkrubu ya kukaza yenye nati ya mabawa1 kipande
3

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.

Vifaa kwa hatua hii:

Fimbo ya mviringo ya feleji ya kasi ya juuFimbo ya mviringo ya feleji ya kasi ya juu1 as required
Utepe wa feleji ya kaboniUtepe wa feleji ya kaboni1 as required

Zana zinazohitajika:

Kinu cha kuviringisha metaliKinu cha kuviringisha metali
4

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.

Zana zinazohitajika:

Mashine ya kukata meno ya msumenoMashine ya kukata meno ya msumeno
Tanuru ya kukaza na kupoza kiasi utepeTanuru ya kukaza na kupoza kiasi utepe

Vifaa

5

Zana Zinazohitajika

4

Mchoro huu unatengeneza

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

The Hacksaw: Blade Tension, TPI, and the Three-Tooth Rule

The Hacksaw: Blade Tension, TPI, and the Three-Tooth Rule

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Coping Saw: Bent Frame, Pinned Blade and Handle

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CC0 Umma Wote

Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.

Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.

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