Rotary Cutting Tool Layout to Reduce Vibration and Machining Marks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional machining tools face challenges in minimizing machining marks and machining time due to limited space for cutting edges, leading to a long machining time and vibrations, which result in inefficient cutting performance and noise.
Innovation Solution
The machining tool employs cutting edges with reference points spaced at angular distances that are integer multiples of values within a specific angular range, including the golden angle, to achieve an ideal distribution and reduce vibrations, allowing for more cutting bodies on the tool surface, thereby increasing cutting performance and minimizing machining time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cutting edges are arranged with standard angular spacing (5° to 10°) to allow independent erosion/grinding, then cutting edges can be maintained independently, but the number of teeth is limited and machining time increases
Solution Approach 1:
The patent changes the angular spacing parameter from conventional values (5° to 10°) to specific irrational angle values (120°, 135°, 150°, 165°, 180°, 200°, 225°, 240°, 270°, 300°, 315°, 330°). This parameter change allows cutting edges to be spaced such that their projection paths do not overlap on the workpiece surface, enabling both independent maintenance and increased number of teeth (at least 12) for reduced machining time.
2Manufacturing precision
If cutting edges overlap to ensure continuous cutting line without gaps, then cutting coverage is improved, but machining marks appear on the workpiece and cutting performance decreases
Solution Approach 1:
The patent employs asymmetric angular spacing between cutting edges using irrational angle values that are not uniform intervals. This asymmetric arrangement ensures that while cutting edges overlap to provide continuous coverage, their projection paths are staggered in a non-repetitive pattern, preventing the formation of regular machining marks and maintaining high cutting performance with at least 12 teeth.
Data Source
Figure 1a
Figure 1b
Figure 2a
AI summary
The invention relates to a machining tool for the machining of materials, which is provided for rotary drive about a rotary axis (50), wherein the machining tool (1) has a base body (2) through which the rotary axis (50) passes. Several cutting elements (3, 13, 23, 33, 43, 53, 103, 113, 123, 133, 203, 213, 223, 303, 313, 323, 353) with a cutting edge (4, 14, 24, 34, 44, 54, 104, 114, 124, 134, 204, 214, 224, 304, 314, 324, 354) are arranged on the base body (2). The machining tool (1) is designed so that the multiple cutting bodies (3, 13, 23, 33, 43, 53, 103, 113, 123, 133, 203, 213, 223, 303, 313, 323, 353) rotate in a direction (49) around the axis of rotation (50) during operation.Each cutting edge (4, 14, 24, 34, 44, 54, 104, 114, 124, 134, 204, 214, 224, 304, 314, 324, 354) of the multiple cutting bodies (3, 13, 23, 33, 43, 53, 103, 113, 123, 133, 203, 213, 223, 303, 313, 323, 353) has exactly one reference point (5, 15, 25, 35, 45, 55, 105, 115, 125, 135, 205, 215, 225, 305, 315, 325, 355), which is located in particular in the direction perpendicular to the direction of rotation (49) in the middle of the cutting edge (4, 14, 24, 34, 44, 54, 104, 114, 124, 134, 204, 214, 224, 304, 314, 324, 354). The reference points (5, 15, 25, 35, 45, 55, 105, 115, 125, 135, 205, 215, 225, 305, 315, 325, 355) are spaced apart from each other in the direction perpendicular to the direction of rotation (49).Reference points (5, 15, 25, 35, 45, 55, 105, 115, 125, 135, 205, 215, 225, 305, 315, 325, 355) of the cutting edges (4, 14, 24, 34, 44, 54, 104, 114, 124, 134, 204, 214, 224, 304, 314, 324, 354) of the multiple cutting bodies (3, 13, 23, 33, 43, 53, 103, 113, 123, 133, 203, 213, 223, 303) immediately adjacent to the direction of rotation (49). 313, 323, 353) are arranged at angular intervals (Φ1, Φ2) relative to the axis of rotation (50). These angular intervals (Φ1, Φ2) are integer multiples of angle values that lie within a range of +/- 5° with respect to the golden angle. The sum of the golden angle and an opposite angle yields the full angle, and the ratio of the golden angle to the opposite angle is equal to the ratio of the opposite angle to the full angle.