Name: UNI ISO 3442-3 : 2009
Brand: UNI

Machine tools - Dimensions and geometric tests for self-centring chucks with two-piece jaws - Part 3: Power-operated chucks with serrated jaws

Published date

11-19-2009

Publisher

Ente Nazionale Italiano di Unificazione (UNI)

Foreword
1 Scope
2 Normative references
3 Preliminary remarks
  3.1 Measuring units
  3.2 Geometric tests
  3.3 Tests to be performed
4 Precision classes
5 Sizes for interchangeability
  5.1 90 degree serrations - Dimensions
  5.2 90 degree serrations - Permissible cumulative pitch
      deviation
  5.3 60 degree serrations - Dimensions
  5.4 60 degree serrations - Permissible cumulative pitch
      deviation
  5.5 Jaw nuts - Dimensions
6 Geometric tests
  6.1 Test mandrels
  6.2 Spindle or face plate accuracy
  6.3 Chuck body accuracy
  6.4 Test with test top jaws (hard jaws)
  6.5 Tests with machined top jaws
  6.6 Tests off-the-spindle
  6.7 Chuck accuracy

Describes 90 degree and 60 degree serrations and jaw nuts applicable to 90 degree and 60 degree serrations for mounting the top jaws on the base jaws of power chucks, in order to ensure interchangeability. Also specifies the geometric tests for self-centring, power-operated chucks with two or more two-piece jaws (serrated type), and the corresponding tolerances which apply.

DevelopmentNote	Supersedes UNI ISO 9401. (11/2009)
DocumentType	Standard
PublisherName	Ente Nazionale Italiano di Unificazione (UNI)
Status	Current
Supersedes	UNI ISO 9401 : 1993

Standards	Relationship
ISO 3442-3:2007	Identical

ISO 230-1:2012	Test code for machine tools — Part 1: Geometric accuracy of machines operating under no-load or quasi-static conditions
ISO 965-3:1998	ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructional screw threads