Rotary Cutting Tool Pocket Structure for Lower Noise Machining
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Solution Overview
Problem
The production of rotary-driven cutting tools is complex and costly due to the need for form milling, and they generate significant noise during operation, requiring high manufacturing precision and noise protection measures.
Innovation Solution
A cutting tool design where the tool base body is partially or fully a rotating body, with receiving pockets incorporated into its surface, allowing for easier manufacturing by turning and reducing noise through a surface structure that acts as an aerodynamic turbulator or chamfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the tool body is designed with protruding studs and complex form milling to support cutting plates, then the cutting plates can be properly supported against cutting forces, but the manufacturing effort and cost increase significantly
Solution Approach 1:
Instead of having the tool body protrude outward with studs to support cutting plates, the invention inverts the approach by having receiving pockets recessed into the tool body. The support surface is formed by the bottom of these pockets, eliminating the need for complex external protrusions and form milling operations.
Solution Approach 2:
The receiving pockets serve multiple functions: they support the cutting plates against cutting forces, provide a recessed mounting location that reduces noise, and eliminate the need for separate studs. This multi-functionality simplifies the overall tool body design and manufacturing.
2Device complexity
If the tool body is designed with complex form milling between cleats, then the receiving pockets can be properly formed, but the manufacturing cost and time increase
Solution Approach 1:
The tool body is segmented into distinct receiving pockets that are recessed into the surface, rather than requiring complex form milling between protruding cleats. This segmentation allows for simpler, more standardized manufacturing processes.
Solution Approach 2:
The invention inverts the traditional approach by recessing receiving pockets into the tool body surface rather than forming them between external protrusions. This eliminates the need for complex form milling operations and significantly improves manufacturing efficiency.
3Reliability
If the cutting tool operates with traditional design, then the cutting plates can be properly supported, but significant noise is generated during operation
Solution Approach 1:
The invention converts the potentially harmful noise generated by traditional stud-supported cutting plates into a benefit by recessing the receiving pockets. The recessed design alters the aerodynamics and reduces noise generation while maintaining proper cutting plate support, effectively turning a harmful effect into a beneficial quiet operation.
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
Significantly reduces manufacturing effort and noise levels by several decibels, enabling a more efficient and quieter operation.
Implementation Method 1
a surface structure is formed on the surface of the rotating body to reduce noise emissions... A surface structure refers to structures that are based on the circumferential surface of the rotating body and that are produced in particular in a circumferentially rotating process
Data Source
Figure 1
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AI summary
The invention relates to a cutting tool comprising a tool body (2) and at least one cutting insert (10) with a cutting edge (11) separate from the tool body (2). The tool body (2) has an axis of rotation (3) and rotates in a direction (4) about the axis of rotation (3) during operation of the cutting tool (1). The tool body (2) is provided with at least one receiving pocket (13) for the cutting insert (10) and is designed, at least partially with respect to the axis of rotation (3), as a rotating body (20). The at least one receiving pocket (13) is machined into the surface of the rotating body (20) and has a support surface (16) for the cutting insert (10) that is bounded by the circumferential contour of the rotating body (20). The cutting plate (10) rests against the support surface (16) of the receiving pocket (13) and protrudes with its cutting edge (11) from the receiving pocket (13) beyond the outer contour of the rotating body (20).