Coaxial Diamond Dressing Tool for Correcting Grinding Worm Profiles
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Solution Overview
Problem
Existing dressing tools for grinding worms lack flexibility in correcting profile angle deviations and achieve inadequate dressing and grinding quality due to spatially moving contact points that are not in the axial section plane, leading to reduced accuracy and limited productivity.
Innovation Solution
A dressing tool with coaxially arranged profiles, a metallic base body, and a nickel-diamond matrix bonded by a casting compound, produced using a negative electroplating process, which reduces vibrations and allows for precise profiling with adjustable profile angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If solid profile rollers are used for dressing grinding worms, then productivity is improved through high-speed dressing operations, but adaptability deteriorates due to very limited application flexibility and inability to correct profile angle deviations
Solution Approach 1:
The dressing tool is divided into multiple profiles (typically 2-6 profiles) arranged coaxially on a single tool, allowing each profile to dress different sections of multi-start grinding worms simultaneously. This segmentation enables the tool to maintain high productivity while processing complex worm geometries that require multiple dressing points.
Solution Approach 2:
The dressing tool is designed with universal applicability through adjustable profile angles and the ability to dress various types of grinding worms (single-start, multi-start, different module ranges). The tool can correct profile angle deviations and adapt to different worm flank geometries, making it suitable for a wide range of generating grinding applications.
2Ease of operation
If conventional dressing tools with spatially moving contact points are used, then dressing operations can be performed, but manufacturing precision deteriorates due to inadequate dressing quality and reduced accuracy from contact points not in the axial section plane
Solution Approach 1:
Instead of allowing the contact points to move spatially off the axial section plane, the invention inverts the approach by ensuring that the active dressing surfaces are configured to maintain contact points within the axial section plane throughout the dressing operation. This is achieved through precise configuration of the profile geometry and dressing tool alignment, ensuring that the profile angles and contact geometry keep all active contact points in the critical axial section plane, thereby maintaining high manufacturing precision.
3Device complexity
If single-profile dressing tools are used, then tool complexity is reduced, but productivity deteriorates due to inability to process multiple worm threads simultaneously
Solution Approach 1:
Multiple profiles are merged into a single integrated dressing tool structure, with all profiles mounted coaxially on one tool body. This merging allows simultaneous engagement with multiple threads of multi-start grinding worms, dramatically increasing dressing throughput. The profiles are positioned at specific angular intervals to match the number of worm starts, enabling parallel dressing of all worm flanks in a single stroke.
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
Enables high-precision, productive profiling of grinding worms with extended tool life and reduced manufacturing costs, minimizing vibrations and enabling correction of profile angle deviations during generating grinding.
Implementation Method 1
a nickel-diamond matrix produced by a negative process, which is bonded to the base body (19) by the casting compound (15)
Implementation Method 2
produced using a negative process with a casting compound applied to the base body (19)
Data Source
Figure 1~2
Figure 3~3b
Figure 4~4b
AI summary
The invention relates to a dressing tool which has profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) which are 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 (13, 14) which are provided with hard-material particles. The profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) are delimited at their outer circumference by at least one generated surface (23, 24). The dressing tool (10) comprises six profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) arranged coaxially with one another and a one-part or two-part metallic main body (19) for the entire dressing tool (10) or for a particular generated surface (23, 24). The profile forms with the hard-material particles of the profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) are produced here by a negative process with a casting compound (15) applied to the particular main body (19). 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.