Toothed Workpiece Surface Modification via Diagonal Rolling
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Solution Overview
Problem
Existing methods for producing toothed workpieces with modified surface geometry lack flexibility in specifying desired modifications, limiting the range of possible surface geometry configurations.
Innovation Solution
A diagonal rolling method using a modified tool with surface geometry modifications, including linear and quadratic functions, and varying tool rotation angles and positions, combined with machine kinematics changes, to generate a wide range of surface geometry modifications on the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing methods for producing toothed workpieces with modified surface geometry are used, then the process is relatively simple, but the flexibility in specifying desired modifications is limited
Solution Approach 1:
The patent implements dynamic adjustment of the collector position during the dressing process, allowing the system to adapt to different desired surface geometry modifications. The collector position is varied as a function of the tool rotation angle and/or tool width position, enabling flexible specification of modifications including crownings and profile shapes without requiring multiple fixed dressing setups
Solution Approach 2:
The patent changes physical parameters of the dressing process, specifically the collector position relative to the tool, as a variable function during the dressing operation. By making the collector position dynamic rather than fixed, and by allowing it to vary with rotation angle and width position, the system achieves greater flexibility in producing different surface geometry modifications on toothed workpieces
2Adaptability or versatility
If a modified tool with complex surface geometry modifications is used, then a large class of surface geometry modifications can be produced, but the tool manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary modifications to the tool surface geometry through a controlled dressing process using a modified collector. By pre-establishing the desired surface geometry modifications on the tool before the actual toothed workpiece production, the system enables a large range of modifications to be produced subsequently without requiring complex tool manufacturing for each specific modification
Solution Approach 2:
The modified collector serves multiple functions: it can create different types of surface geometry modifications (crownings, profile shapes, etc.) by varying its position as a function of tool rotation angle and width position. This single multi-functional dressing device replaces the need for multiple specialized tools, simplifying tool manufacturing while expanding the range of producible modifications
Data Source
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AI summary
The present invention relates to a method for producing a toothed workpiece with a modified surface geometry by a diagonal rolling process using a modified tool, wherein a tool is used to generate the modification of the workpiece, the surface geometry of which comprises a modification which can be described at least approximately in the rolling pattern, at least locally in a first direction of the tool, by a linear and/or quadratic function, wherein the coefficients of this linear and/or quadratic function in a second direction of the tool, which is perpendicular to the first direction, are formed by coefficient functions FFtC,1 for the constant part and FFIL,1 for the linear part and/or FFtQ,1 for the quadratic part, wherein FFtC,1 depends non-linearly on the position in the second direction and FFIL,1 is non-constant, and/or a modification,whose pitch and/or crown varies depending on the tool rotation angle and/or tool width position, and whose tooth thickness varies non-linearly depending on the tool rotation angle and/or tool width position.