IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Dial Gauge: Logan, 1883
John Logan of Waltham, Massachusetts, patented this dial gauge in 1883, US 283,627. A gauging bar slides lengthwise through guides in a case with a graduated dial. A chain fixed to the bar is wound round the arbor that carries the pointer, so when the bar moves the chain unwinds and turns the pointer. The pointer's end moves much further than the bar, which makes the reading very delicate. A spring on the arbor winds the chain back and returns the bar to zero. A jaw on the case and a jaw on the bar make it a caliper; a slender rod beside the bar's other end makes it a depth gauge.
Ilọsíwájú
Workshop process
Ìlànà
1
1
Case and dial
Case and dial
Make the case with the graduated dial, with tubular guide projections at opposite sides for the gauging bar.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àpótí dial gauge pẹ̀lú ojú olóṣùwọ̀n1 ẹyọ2
2
Arbor, chain and bar
Arbor, chain and bar
Pivot the arbor carrying the pointer at the dial's centre. Pass the gauging bar through the guides and connect it to the arbor by a chain fixed to the bar and wound round the arbor.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá-àárín abẹ́rẹ́ àti abẹ́rẹ́1 ẹyọ
Ọ̀pá ìwọ̀n1 ẹyọ
Ẹ̀wọ̀n kíkúnná1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ìdìpọ̀ ẹmú pípéye
Ìṣù àwọn ohun ìyí skurú3
3
Return spring
Return spring
Connect a spring between the arbor and the case so that it turns the arbor to wind the chain and draws the bar back to the zero position.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Sípírínì ìpadà ọ̀pá-àárín1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ìdìpọ̀ ẹmú pípéye4
4
Jaws and depth rod
Jaws and depth rod
Fix a jaw on the case and a matching jaw on the bar; when they touch, the pointer reads zero. Fix a slender gauging rod beside the guide at the other end, in line with the bar's end at zero, for measuring depths.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ẹ̀kẹ́ caliper1 ẹyọ
Ọ̀pá ìwọ̀n jíjìn1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ìṣù àwọn ohun ìyí skurúÀwọn ohun-èlò
7- Àyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- Àyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
Àwọn irinṣẹ́ tó nílò
2Ìtọ́nisọ́nà yìí ń ṣe
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