Segmented Dressing Tool for Correctable Grinding Worm Profiling
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Solution Overview
Problem
Existing dressing tools for grinding worms lack flexibility in correcting profile angle deviations, leading to inadequate dressing and grinding quality, and are either too elaborate or unsuitable for high-precision profiling.
Innovation Solution
A dressing tool with coaxially arranged profiles, produced using a negative process, incorporating a metallic main body and a nickel-diamond matrix, which allows for precise and productive profiling with the ability to correct profile angle deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-profile rolls are used as rotating dressing tools, then productivity is improved, but flexibility for correction of profile angle deviations is lost
Solution Approach 1:
The dressing tool is divided into multiple independent profiles (typically 3-5 profiles) arranged coaxially on a single tool body. Each profile can be independently adjusted radially to correct profile angle deviations, while the tool maintains high productivity by dressing multiple worm threads simultaneously. This segmentation resolves the contradiction by providing both parallel processing capability (productivity) and individual adjustability (flexibility).
Solution Approach 2:
The profiles are designed with radial adjustment capability, allowing dynamic correction of profile angle deviations during the dressing process. The profiles can be moved radially inward or outward to compensate for geometric errors, while maintaining their rotational motion for high-speed dressing operations. This dynamic adjustability enables both high productivity and correction flexibility.
2Productivity
If multiple coaxial profiles are used, then productivity and precision are improved, but device complexity increases
Solution Approach 1:
Multiple profiles are merged onto a single tool body, sharing common mounting structures, adjustment mechanisms, and drive systems. The profiles are arranged coaxially and can be adjusted using shared radial adjustment mechanisms, reducing the overall complexity compared to using separate tools. This merging approach maintains high productivity through multi-thread dressing while controlling device complexity through shared components.
3Manufacturing precision
If profiles are provided with hard-material particles, then dressing precision is improved, but manufacturing complexity increases
Solution Approach 1:
The profiles are created using a negative molding process, where a master pattern is used to create precise cavities in a mold. Hard material particles (such as diamond or cubic boron nitride) are then embedded into these pre-formed cavities. This copying approach ensures high dressing precision is achieved through the accuracy of the negative mold, while the manufacturing complexity is managed by using standard molding techniques rather than complex direct fabrication methods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tool achieves high-precision, productive profiling with extended service life and reduced manufacturing costs, while minimizing oscillations and ghost frequencies during operation.
Implementation Method 1
produced using a negative process, incorporating a metallic main body and a nickel-diamond matrix
Data Source
AI summary
Dressing tool which has profiled elements arranged coaxially with one another and which are each provided with a profile form, which is tapered or the like in its axial cross-section and has working surfaces provided with hard-material particles. The profiled elements are delimited at their outer circumference by at least one generated surface. The dressing tool preferably includes six profiled elements arranged coaxially with one another, and a one-part or two-part metallic main body for the entire dressing tool or for a particular generated surface. The profile forms with the hard-material particles of the profiled elements may be produced by a negative process with a casting compound applied to the particular main body. This dressing tool can thus be used for a profiling of grinding worms extremely productively and precisely and also such that they can be corrected.