Single external and internal cylindrical gears according to DIN 3960 and further standards

• Geometry of single cylindrical gears, external and internal gears, spur and helical gears - according to DIN 3960, DIN 3961, DIN 3964, DIN 3967, DIN 3977 and DIN 868
• Consideration of profile shift with extended range
• Gear quality and tooth thickness tolerances can be selected from listboxes or can be defined individually
• Addendum chamfer can be considered in the calculation
• Standardised basic rack tooth profiles for tools according to ISO 53, DIN 867 and DIN 3972 can be selected or individually definded, tools with shifted profile reference line, protuberance tools with or without allowance, dimensioning function for special basic rack tooth profiles
• Full-depth teeth and stub tooth gears possible
• Type of tools: hob, gear shaper cutter and constructed involute
  Determination of test dimensions, suggestion for number of teeth for span measurement as well as suggestion for ball/pin diameter for measurement over balls or pins
• Calculation of the tooth thickness allowances based on measured values or given test dimensions
• Calculation of form diameter of addendum and dedendum
• Display of the accurate gear tooth form
• Definition and consideration of profile modifications: linear and circular tip relief, linear and circular root relief, symmetric profile crowning
• Definition of flank modifications: end relief, symmetric and asymmetric lead crowning
• Geometry of internal gears
• Calculation with non-integer number of teeth, i.e., number of teeth with decimal places (available on request)
• Calculation with helix angle greater than 45 degree (available on request)
• Detailed calculation report as well as short calculation report for manufacturing in HTML and PDF format
• Output of CAD data via eAssistant CAD-PlugIns or DXF interface

This gear calculation module allows a simple calculation of single external and internal cylindrical gears according to DIN 3960, DIN 3961, DIN 3964, DIN 3967, DIN 3977 and DIN 868. External spur and helical gears as well internal gearings are possible to calculate. Profile shift, addendum chamfer and allowances will be taken into consideration. Gear quality and tooth thickness tolerances can be comfortably selected from listboxes.

Different standardised tool basic rack profiles according to ISO 53, DIN 867 and DIN 3972 can be selected or defined individually for the calculation. Protuberance tools with a shifted profile reference line are also supported. A machining allowance per flank can also be defined. Full-depth teeth and stub tooth gears can be calculated as well. Furthermore, the test dimensions for the gearing are determined. For that, the required number of teeth for the span measurement as well as the ball or pin diameter will be determined automatically. Optionally, the values can be defined by the user. In addition, a backward calculation of the tooth thickness allowances from the test dimensions is also possible.

One particular highlight of the calculation module is the representation of the calculated gear tooth form. For this representation, the minimum, mean and maximum allowances for the tooth thicknesses and tip diameters can be selected. The program also gives hints and warnings, for example in terms of gear tolerances which appear in the calculation report depending on the gear quality.

The module includes all typical eAssistant functions, for example the redo and undo function and the creation of a calculation report in HTML and PDF format. Various templates, such as a short or standard report, can be used for the generation of the calculation report.