Spiral bevel gears

• Geometry of Zyklo-Palloid® spiral bevel gears according to Klingelnberg KN 3028 / ISO 23509
• Klingelnberg bevel gears: tip cone, root cone and reference cone are parallel (constant tooth depth)
• Recommended range of values for facewidth, mean normal module and mean spiral angle
• Bevel gear pairs with shaft angle = 90°, without offset
• Basic rack profiles according to ISO 53, DIN 867 and DIN 3972 can be selected or defined individually
• List of Klingelnberg machines is available including suggestions for suitable machines and cutter radii, alternatively cutter heads according to ISO 23509 can be selected, cutter radius, number of blade groups and cutter module can be defined as well
• Check of feasibility regarding backcut, burr, check for backwards cut
• Consideration of profile shift and thickness modification
• Check for undercut and pointed teeth, suggestions for tooth tip chamfering
• Calculation of transverse contact ratio, overlap contact ratio and total contact ratio based on virtual spur gear toothing
• Turning dimensions with lengths of cone and angles and other
• Suggestions for backlash according to Klingelnberg or Niemann, backlash can be defined individually
• Determination of the tooth depth, tooth thickness and chordal tooth thickness
• Allowances according to DIN 3965 for deviations of several parameters, shaft angle deviation and common apex deviation, gear quality, appropriate allowances and permissible deviations according to ISO 17485 respectively
• Load capacity calculation according to ISO 10300 Method 1 with integrated material and lubricant database
• Mode of operation: swelling, alternating and oscillating
• Calculation of safeties for fatigue or limited life strength and static strength (tooth root, flank / pitting, scuffing)
• Detailed calculation report in HTML and PDF format

This gear calculation module allows a fast and easy calculation of Klingelnberg´s Zyklo-Palloid® spiral bevel gears according to ISO 23509 and KN 3028. A recommended range of values for facewidth, mean normal module and mean spiral angle is shown next to the input fields. Standard basic rack profiles according to ISO 53, DIN 867 and DIN 3972 are available for the calculation or can be defined individually. A listbox displays available Klingelnberg machines that may be selected for the manufacturing process by the user. The user can choose recommended machine types and standard cutter radii. Individual machine data, such as cutter radius, number of blade groups or cutter module, can be defined manually. Cutter heads according to ISO 23509 are available.

The calculation module checks the feasibility regarding backcut, burr and backwards cut. Profile shift modification as well as thickness modification are also included in the calculation. Undercut is controlled, the calculation module suggests a minimum profile shift modification in order to avoid undercut. If the tip tooth thickness at the inner cone is too small, a tooth tip chamfering is carried out automatically. The user is able to manually define the individual tooth tip chamfering.

Based on a virtual spur gear toothing, transverse contact ratio, overlap contact ratio and total contact ratio are calculated in accordance with ISO 23509. Turning dimensions with lengths of cone and angles are determined. Other gear body parameters, including tip circle distance and mounting distance, are determined as well. The user can modify the mounting distance. The module provides proposals for the amount of backlash according to Klingelnberg or Niemann. A backlash can be defined individually.

Futhermore, allowances (according to DIN 3965) for shaft angle deviation and common apex deviation are available. The gear tooth quality can be selected in accordance with ISO 17485. The tolerances, determined from the gear tooth quality, are calculated as well. Tooth depth, tooth thickness and chordal tooth thickness are determined automatically.

In addition to the geometry calculation, a calculation of the load capacity according to ISO 10300 Method B1 is possible. The user can calculate the safeties for fatigue or limited life strength and static strength (tooth root, flank / pitting, scuffing). Material and lubricant databases support the user. Additionally, the mode of operation is considered (swelling, alternating and oscillating).

The redo/undo function and the calculation report in HTML and PDF are also available in this module.