AT33700B

AT33700B - Milling cutter for the production of face, bevel and helical gears of various pitches.

Info

Publication number: AT33700B
Authority: AT
Inventors: Louis Boisard
Original assignee: Louis Boisard
Priority date: 1905-04-23
Filing date: 1905-04-23
Publication date: 1908-07-25

Description

  

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   Man könnte zu demselben Zweck auch eine Differentialeinrichtung verwenden, wie solche bei den Maschinen nach System   Reinicker,   Biernatzki usw. zum Schneiden zylindrischer Schrauben. räder verwendet werden. 



   In manchen Fällen könnte man auch globoidische Fräser gebrauchen, d. h. solche, bei welchen das Schneidegewinde nicht auf einem Zylinder, sondern auf einer Rotationsfläche aufgewickelt ist, die durch Drehung eines Kreisbogens um eine Achse entsteht   (Fig. 6). In diesem   Falle kann dann unter Umständen die Longitudinalbewegung des Fräsers entbehrlich werden, da dieser   Fräser einen grösseren Teil   des Radumfanges umspannt. 



   PATENT-ANSPRÜCHE : 
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 Teilung, dadurch gekennzeichnet, dass seine   schraubenfächenförmigen   Begrenzungsflächen einerseits durch zwei gleiche Schraubenflächen gebildet werden, deren Steigung der Teilung entspricht, welche die eine Grenzlage zum Fräsen der Zähne bildet, andererseits durch zwei gleiche Schraubenflächen, deren Steigung der Teilung entspricht, welche die andere Grenzlage zum Fräsen der Zähne bildet.



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   A differential device could also be used for the same purpose, as is the case with machines according to the Reinicker, Biernatzki, etc. system for cutting cylindrical screws. wheels are used.



   In some cases globoidic milling cutters could also be used, i. H. those in which the cutting thread is not wound on a cylinder but on a surface of revolution which is created by rotating an arc around an axis (Fig. 6). In this case, under certain circumstances, the longitudinal movement of the milling cutter can be dispensed with, since this milling cutter spans a larger part of the wheel circumference.



   PATENT CLAIMS:
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 Pitch, characterized in that its helical surface-shaped boundary surfaces are formed on the one hand by two equal helical surfaces, the pitch of which corresponds to the pitch that forms one boundary layer for milling the teeth, on the other hand by two equal helical surfaces whose pitch corresponds to the pitch that the other boundary layer to Milling the teeth forms.

Claims

2. A method for cutting spur gears by means of a screw milling cutter according to claim 1 with globoidic design of the same, characterized in that the same executes a continuous rotation around its own axis with simultaneous rotation of the workpiece and at an axis inclination, which is dependent on the desired pitch, at the same time a movement in the longitudinal direction of the cylinder produces the workpiece.

3. The method according to claim 2 when using a cylindrical milling cutter, characterized in that the milling cutter performs a back and forth movement in the longitudinal direction of its axis as an additional movement. EMI3.2 that apart from the movements of the milling cutter required for the manufacture of spur gears and! of the workpiece a change in the inclination of the cutter axis is made u. between those positions which correspond to the largest and smallest division of the workpiece measured on the pitch circle cone.

5. A method for milling helical gears according to claims 2-4, characterized in that in addition to the movements of the milling cutter and the workpiece required for the production of wheels with straight teeth, the direction of the axial movement of the milling cutter EMI3.3