Doppler Gear TechBit: DIN Spline Decoder *Calculations, procedures, processes, and data contained herein are to be used only with the judgment of a . This Spline Design Data is based on ISO the signs for the number of teeth and addendum modification factors of internal gear splines as defined in DIN. March DIN Splined connections with involute splines DIN 1 Table 3: Basic rack profile Parameters Symbol Spline data.

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The geometry can be selected conveniently from a data base.

The zpline search function can help the user to quickly identify a profile. An own input of involute spline geometry is also possible. The following tool types are available: Basic rack tooth profiles can be selected according to DIN for broaching, hobbing, shaping, cold rolling and diameter centering.

Involute splines according to DIN 5480, DIN 5482, ISO 4156, ANSI B92.2M, ANSI B92.1

Tool standard rack tooth profiles for the other standards are also available, e. All parameters for the basic rack tooth profile can be defined individually or determined automatically. This will determine the permissible deviations and tooth thickness allowances.


The calculation of the tooth thickness allowances can be done based on measured values or given test dimensions. Test dimensions, backlash normal plane and backlash pitch diameter are calculated as well.

For the test dimensions, the required number of the teeth for span measurement and the diameter of ball or pin will be determined automatically by the program or can be entered by the user. The display of the accurate tooth form is a special highlight.

WN2 / WN2+

The tooth thickness is considered as well, so that the tooth form could then be used for manufacturing e. The permissible surface pressures are determined from material properties, so it is possible to use special materials. Materials can be selected from the data base. For a different load input and output, the load factor according to DIN will be calculated based on the defined geometry. In addition, load peaks and alternating torque can be specified for the calculation.


Dimensioning functions for the operation nominal torque, the maximum load peak torque and the supporting length help the user. The calculation results for the surface pressure and safeties for operation load and maximum load for shaft and hub are determined and displayed immediately during the input of values.

WN2 – Toothed Shaft Design

After the calculation is finished, a calculation report can be generated. The report includes the calculation method, all important input values and detailed results.

Input of geometry data. Input of tool data. Input of data for determination of allowances. Representation of accurate tooth form.

Strength calculation according to Niemann. Imprint Print to Top.