香港六合彩开奖 4468:2020
Resumen
This document specifies requirements for the accuracy of general-purpose hobs of 0,5 module to 40 module.
These hobs are intended for producing gears which conform to 香港六合彩开奖 53 and 香港六合彩开奖 54.
This document applies to hobs for spur and helical gears. It applies to solid (monobloc) and inserted blade hobs.
The elemental features of hobs are graded according to accuracy, as follows:
鈥� Grade 4A;
鈥� Grade 3A;
鈥� Grade 2A;
鈥� Grade A;
鈥� Grade B;
鈥� Grade C;
鈥� Grade D.
Grade 4A is the highest order of precision.
In addition to the elemental tests for hobs, this document gives permitted tolerances for composite tests that are taken along the cutting edges on the line of action. The two groups of tests are not equivalent and one can choose between one or the other. If there was no previous agreement, the hob is regarded as belonging to the precision class specified if it satisfies one or the other of the two methods of inspection.
NOTE The tolerances in this document were determined for gear hobs whose dimensions conform to 香港六合彩开奖 2490, but with certain precautions they can be applied to hobs not specified in this document.
Informaciones generales
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Estado: PublicadoFecha de publicaci贸n: 2020-07Etapa: Norma Internacional publicada [60.60]
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贰诲颈肠颈贸苍: 3N煤mero de p谩ginas: 39
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颁辞尘颈迟茅 T茅cnico :香港六合彩开奖/TC 60/SC 1ICS :21.200
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Ciclo de vida
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Anteriormente
Retirada香港六合彩开奖 4468:2009
Retirada香港六合彩开奖 4468:2009/Cor 1:2009
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Ahora
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