Figures are classified by final digit:.

* A = Helical Pinion TEST_A .

* B = Helical large Wheel TEST-B .

* C = Spur gear TEST-C .

Figures A-B-C are grouped under link label A.

* U = unique table/picture

* milling paths in continous mode (pinion)

* Data sheet of example gear

* Previous rough machining wiuth double-cone milling tool: layout

* Previous rough machining wiuth double-cone milling tool: tool assembly

* Error diagram in continous milling mode, for tool dia=250 due to path step and minimum curvature radius at root

* Error diagram in continous milling mode, for tool dia=315 due to path step and minimum curvature radius at root

* Optimized planning in multi-cut milling mode, from 2 to 8 cuts by using 1 only milling tool; maximum over-stock is equal

* Optimized planning in multi-cut milling mode, from 2 to 8 cuts by using 2 milling tool spaced of normal basic pitch; maximum over-stock is equal

* Diagram for hand-calculation of cuts planning in multi-cut mode; best results when external gap is balanced around external curvature radius Calculated optimized planning belongs to this diagram

* Diagram of otimized planning in multi-cut mode, with proper extra-radius due to helix ; for use of 1 milling tool

* Diagram of otimized planning in multi-cut mode, with proper extra-radius due to helix ; for use of 2 milling tool , in case krc < 0,50 ; planning is referred to path of front milling tool; krc = tool distance / delta curvature radius

* Diagram of otimized planning in multi-cut mode, with proper extra-radius due to helix ; for use of 2 milling tool , in case krc > 0,50 ; planning is referred to path of rear milling tool; krc = tool distance / delta curvature radius

* Machining layout in internal position = arrive point in continous milling or innest cut in multi-cut mode

* Tool assembly for involute machining, both continous and multi-cut mode with minimum distance from table to gear edge

* Rolling progression : linear increasing of both rotation and tool translation

* Extreme positions in continous mode; Feed-fitting value K and maximum axes speed

* Side view of extreme positions, with movement of tool center over a trasvere plane along X

* Side view of extreme positions, with movement of tool center along tool axe, on machining center or hobbing machine

* Side view of milling tool in innest position, with eventual extra-depth under tangent plane

* Calculation of form error: table 1 : 1st value F1 due to path step and tool diameter

* Calculation of form error: table 2 : 2nd value F2 = form error due to F1 and minimum curvature radius at root

* Machining layout in continous mode with tool axe fixed (as by an ordinary hobbing machine)

* Machining layout in continous mode with tool axe oriented as normal pressure angle : working area is always close to center

* DIN allowance for example gear

* Rolling area from Da to dNf

* Feed-fitting diagram in continous mode + machining time, with 2 tools for krc < 0,5 : first contact is by front milling tool and following contact of rear tool makes X-Feed lower

* Feed-fitting diagram in continous mode + machining time, with 2 tools for krc < 0,5 : first contact is by rear milling tool and whole Feed-fitting is referred to rear milling tool position

* Continous milling mode: form error diagram along gear axe in innest position, WITHOUT extra-depth of tool edge

* Continous milling mode: form error diagram along gear axe in innest position, WITH OPTIMIZED extra-depth of tool edge

* Continous milling mode: form error when gear facewidth is equally shared by machining paths, for tool dia=200 mm

* Continous milling mode: form error when gear facewidth is equally shared by machining paths, for tool dia=250 mm

* Mating conditions of example gear pair, with local values of sliding coefficient and fundamentals

* Normal and trasverse profile, with tangent local axes for tool thickness verify

* Rough cut with thin milling tool : layout

* Rough cut with thin milling tool : milling equipement

* Mating conditions with reference rack

* Ellipse diagram of matching gear-hob: hob helix equal to gear helix L/L or R/R

* Ellipse diagram of matching gear-hob: hob helix reverse than gear helix L/R or R/L