Dual-Edge Milling Tool for One-Clamping Gear Tooth Chamfering
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Solution Overview
Problem
Existing milling tools require repositioning of the workpiece to chamfer flank edges on both end faces of cylindrical toothed workpieces, which is time-consuming and inefficient.
Innovation Solution
A milling tool with an elongated shank part and a cutting part featuring two cutting edges, allowing for chamfering of both end faces without repositioning by adjusting the tool's position and rotation in relation to the workpiece, enabling simultaneous chamfering of internal or external teeth on both ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional milling tool with a single cutting edge is used, then the tool structure is simple, but the workpiece must be repositioned to chamfer both end faces, increasing processing time and reducing productivity
Solution Approach 1:
The patent combines two cutting edges on opposite sides of the tool body into a single milling tool structure. The first cutting edge is positioned to chamfer the first end face while the second cutting edge is positioned to chamfer the second end face, allowing both operations to be performed in one clamping without repositioning the workpiece.
Solution Approach 2:
The milling tool is designed with multi-functionality by incorporating cutting edges that can process both end faces of the workpiece. The tool body includes a first cutting edge for chamfering the first end face and a second cutting edge for chamfering the second end face, enabling the single tool to perform multiple chamfering operations.
2Productivity
If the workpiece is repositioned between chamfering operations, then each end face can be processed sequentially, but the total processing time increases and production efficiency decreases
Solution Approach 1:
The patent merges the chamfering operations for both end faces into a single tool setup. By positioning the first cutting edge and second cutting edge on opposite sides of the tool body, both end faces can be chamfered during one clamping operation, eliminating the need for workpiece repositioning and reducing operational complexity.
3Loss of time
If a single cutting edge is used per tool, then the tool design is straightforward, but additional tool changes or workpiece repositioning are required, increasing loss of time
Solution Approach 1:
The patent combines multiple cutting edges into a single tool body structure. The first cutting edge and second cutting edge are positioned on opposite sides of the tool body, allowing simultaneous or sequential access to both end faces of the workpiece without requiring tool changes or workpiece repositioning, thus eliminating time loss.
Data Source
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AI summary
Milling tool for chamfering flank edges of teeth on a cylindrical toothed workpiece comprising an elongated tool body (2) with a rear part (6) configured for attachment to a machine, a cutting part (10) and an elongated shank part (40), which carries the cutting part and extends from the cutting part towards the rear part. The cutting part (10) is provided with a first cutting edge (11) facing away from the rear part (6) and a second cutting edge (12) facing the rear part and located closer to the rear part than the first cutting edge. The distance between the second cutting edge and an axis of rotation (3) of the tool body is gradually increasing from a rear end (12b) of the cutting edge to a front end (12a) thereof, the rear end (12b) being located at a longer distance from the axis of rotation (3) than a radially outermost part of a peripheral surface (41) of the shank part.