NF ISO 3442-3
Machine tools - Dimensions and geometric tests for self-centring chucks with two-piece jaws - Part 3 : power operated chucks with serrated jaws
ISO 3442-3:2007 specifies 90° and 60° serrations and jaw nuts applicable to 90° and 60° serrations for mounting the top jaws on the base jaws of power chucks, in order to ensure interchangeability. It also describes, with reference to ISO 230-1, the geometric tests for self-centring, power-operated chucks with two or more two-piece jaws (serrated type), and the corresponding tolerances which apply.
ISO 3442-3:2007 specifies 90° and 60° serrations and jaw nuts applicable to 90° and 60° serrations for mounting the top jaws on the base jaws of power chucks, in order to ensure interchangeability. It also describes, with reference to ISO 230-1, the geometric tests for self-centring, power-operated chucks with two or more two-piece jaws (serrated type), and the corresponding tolerances which apply.
La présente norme indique les dimensions et tolérances des dentelures de mors de mandrin de tour, ainsi que les rainures et les écrous à T correspondants. Elle s'adresse aux constructeurs et aux utilisateurs de ces machines.
- Avant-proposiv
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1Domaine d'application 1
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2Références normatives 1
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3Remarques préliminaires 1
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3.1Unités de mesure 1
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3.2Essais géométriques 1
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3.3Essais à réaliser 1
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4Classes d'exactitude 2
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5Dimensions d'interchangeabilité 2
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5.1Dentelures à 90° - Dimensions 2
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5.2Dentelures à 90° - Écarts cumulatifs admissibles sur les pas 2
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5.3Dentelures à 60° - Dimensions 3
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5.4Dentelures à 60° - Écarts cumulatifs admissibles sur les pas 4
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5.5Écrous de mors - Dimensions 4
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6Essais géométriques 5
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6.1Mandrins d'essai 5
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6.2Exactitude de la broche ou du faux-plateau du mandrin 6
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6.3Exactitude du corps de mandrin 6
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6.4Essai à l'aide de mors rapportés (mors durs) 6
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6.5Essais à l'aide de mors rapportés usinés 6
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6.6Essais sans broche 6
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6.7Exactitude du mandrin 9
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