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Load-Sensitive Column for a Strain-Gauge Load Cell
English
Arthur C. Ruge (US Patent 2,472,047, granted 1949) · Public domain (expired patent)
Forge

Yaremwe na

Forge

14. Ukwakira 2026NO
33
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Load-Sensitive Column for a Strain-Gauge Load Cell

The column inside Ruge's load cell (1949) carries the whole load and the bonded strain gauges. Its lower end screws into the base; its upper end is rounded to bear in the piston's bore.
Hagati
A few hours

Amabwiriza

1

Watch: facing and turning on a lathe

Facing and parting on a manual lathe.
2

Cut, center and face

Saw a length of round bar. Center both ends, fit a lathe dog and face both ends square.

Ibikoresho by'iyi ntambwe:

Umurongo uziguye w'icyuma cyorohejeUmurongo uziguye w'icyuma cyoroheje1 igice

Ibikoresho bikenewe:

Umucumita w'IbyumaUmucumita w'Ibyuma
Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Igifata gikurura ku mashini ihinguraIgifata gikurura ku mashini ihingura
Icyuma Cyivumbura GihagazeIcyuma Cyivumbura Gihagaze
3

Turn it

Rough-turn to within 0.03–0.04 in of size, then take the finishing cut slowly, with cutting oil. Ruge allows round, square, solid or hollow; a square section (filed or shaped flat) takes the gauges more easily.

Ibikoresho bikenewe:

Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Amavuta yo gukataAmavuta yo gukata
Amakariso MenshiAmakariso Menshi
MikorometeroMikorometero
4

Thread the foot, round the head

Cut a thread on the lower end so it screws rigidly into the base. Round the upper end to a half-sphere with a form tool and file.

Ibikoresho bikenewe:

Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Agakoresho ko gukata imizingo y'ibyumaAgakoresho ko gukata imizingo y'ibyuma
Amakariso MenshiAmakariso Menshi
5

Limits

Ruge's patent gives the part's shape and job but no material or size. Mild steel and silver-solder brazing are our choice; size it to the load you need. Lathe method after Palmateer, Elementary Machine Shop Practice (1918).

Ibikoresho

1

Ibikoresho bikenewe

8

Iki gishushanyo gikora

Thumbnail
Agateganyo

Inkingi yumva uburemere

Free

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0
1

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