Gear Tool Dressing with Variable Dresser Position Across Tool Width
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for dressing tools in gear machining do not fully exploit the possibilities for targeted modifications to the surface geometry of tools, limiting the design options for gear machining processes.
Innovation Solution
A method for dressing tools that uses at least three or four degrees of freedom in the relative positioning between the dresser and the tool, allowing for independent control of modifications such as rolling angles, slope, and radius assignments as functions of the tool width position, enabling more precise and varied surface geometry modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dressing methods are used with limited degrees of freedom, then the process is simple to control, but the range of possible surface geometry modifications is restricted
Solution Approach 1:
The patent applies dynamics by making the dresser position variable during the dressing process. Instead of fixed positioning, the dresser is moved dynamically along the tool width direction according to a predetermined function f(x), enabling continuous modification of surface geometry across different locations of the tool.
Solution Approach 2:
The patent changes the parameter of dresser position from a constant value to a variable function f(x) of tool width position. This parameter transformation enables different surface geometry modifications (crowning, barrel shaping, twisting) by selecting appropriate functions, thus expanding the range of achievable modifications without requiring fundamentally different dressing mechanisms.
2Adaptability or versatility
If the dresser position is varied during dressing to modify surface geometry, then design options for gear machining are expanded, but the control system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining the dresser position function f(x) before the dressing process. The control system stores this function and automatically executes it during dressing, eliminating the need for complex real-time calculations and simplifying the control implementation while still achieving sophisticated surface geometry modifications.
Solution Approach 2:
The patent creates a universal dressing method that can produce multiple types of surface geometry modifications (crowning, barrel shaping, twisting, and combinations) using a single controlled movement function f(x). This multi-functional approach expands design options without requiring separate dedicated mechanisms for each modification type.
3Adaptability or versatility
If additional movements during dressing are implemented, then surface geometry modification capabilities are enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies copying by using a predetermined mathematical function f(x) that defines the desired dresser position trajectory. This function serves as a template that is replicated during the dressing process, ensuring consistent and precise reproduction of the intended surface geometry modification across multiple dressing operations.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a method for dressing a tool, which can be used for gear machining of a workpiece, on a dressing machine, wherein the dressing is carried out with line contact between the dresser and the tool, wherein a targeted modification of the surface geometry of the tool is generated by varying the position of the dresser relative to the tool during dressing as a function of the tool width position, wherein the targeted modification of the surface geometry of the tool generated by changing the position of the dresser relative to the tool during dressing as a function of the tool width position at a rolling angle can be specified as a function C0FS of the position in the tool width direction, and at least the slope of the surface geometry of the tool in a first direction of the tool, which has an angle ρFS to the tool width direction,as a function of the position in the tool width direction, and/or that the targeted modification of the surface geometry of the tool at at least two rolling angles, generated by changing the position of the dresser relative to the tool during dressing as a function of the tool width position, is predefinable as a function of the tool width position, and/or that the targeted modification of the surface geometry of the tool at at least one rolling angle, generated by changing the position of the dresser relative to the tool during dressing as a function of the tool width position, is predefinable as a function of the tool width position, and additionally, an assignment of a specific radius of the dresser to a specific radius of the tool is carried out, wherein the assignment is preferably predefinable as a function of the tool width position.and/or that at least the slope of the targeted modification of the surface geometry of the tool in a first direction of the tool, which has an angle ρFS to the tool width direction, generated by changing the position of the dresser relative to the tool during dressing as a function of the tool width position, can be specified as a function of the position in the tool width direction, and additionally an assignment of a specific radius of the dresser to a specific radius of the tool is carried out, wherein the assignment is preferably specified as a function of the tool width position, and/or that at least the crowning of the targeted modification of the surface geometry of the tool in a first direction of the tool, which has an angle ρFS to the tool width direction, generated by changing the position of the dresser relative to the tool during dressing as a function of the tool width position,as a function of the position in the tool width direction, and/or that at least two degrees of freedom of the relative position of the dresser to the tool during dressing in line contact can be independently specified and/or controlled as a function of the tool width position.