DIN Standards Committee Mechanical Engineering
Passverzahnungen mit Evolventenflanken — Metrischer Modul, flankenzentriert — Teil 2: Maße
Abstract
ISO 4156 (all parts) provides the data and indications necessary for the design, manufacture and inspection of straight (non-helical) side-fitting cylindrical involute splines. Straight cylindrical involute splines manufactured in accordance with ISO 4156 (all parts) are used for clearance, sliding and interference connections of shafts and hubs. They contain all the necessary characteristics for the assembly, transmission of torque, and economic production. The nominal pressure angles are 30°, 37,5° and 45°. For electronic data processing purposes, the form of expression 37,5° has been adopted instead of 37°30’. ISO 4156 (all parts) establishes a specification based on the following modules: — for pressure angles of 30° and 37,5° the module increments are: 0,5; 0,75; 1; 1,25; 1,5; 1,75; 2; 2,5; 3; 4; 5; 6; 8; 10; — for pressure angle of 45° the module increments are: 0,25; 0,5; 0,75; 1; 1,25; 1,5; 1,75; 2; 2,5 This document specifies geometry and inspection dimensions for the design and manufacture of straight (non-helical) side-fitting cylindrical involute splines. Limiting dimensions, tolerances, manufacturing errors and their effects on the fit between connecting coaxial spline elements are defined and tabulated. Linear dimensions are expressed in millimetres and angular dimensions in degrees. The specified diameters for external splines in the geometry tables and the values in the inspection dimension tables are only valid for fundamental deviation “h”. For fundamental deviations other than “h”, diameters and tooth thicknesses are calculated for external splines according to the formulae in ISO 4156-1 and inspection dimensions according to the formulae in ISO 4156-3.
Begin
2024-12-17
Planned document number
DIN ISO 4156-2
Project number
06004534
