Multi-Edged Bearing Race Tool With Segmented Radial Edge Adjustment
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Solution Overview
Problem
Existing multi-edged cutting tools face challenges in synchronously adjusting multiple cutting edges for precise machining of deep holes and axially spaced holes, particularly in compensating for cutting edge wear and achieving high precision in the automotive industry for bearing web machining.
Innovation Solution
A multi-edged cutting tool design with axially displaceable adjusting rods and integrated adjustment devices in each cutter carrier, allowing for radial adjustment and fine tuning of cutting edges in the μm range, enabling synchronous radial control and individual edge compensation for precise machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an adjusting rod is used to synchronously radially guide cutting tool holders, then synchronous radial control is achieved, but individual fine adjustment capability for compensating cutting edge wear is lost
Solution Approach 1:
The adjusting rod is segmented into multiple adjustment elements, each associated with a specific cutting tool holder. This segmentation allows each cutting edge to be individually adjusted while maintaining synchronous control through the common adjusting rod mechanism, resolving the contradiction between synchronous control and individual adjustment capability.
Solution Approach 2:
The adjusting rod serves multiple functions: it provides synchronous radial guidance for all cutting tool holders while also enabling individual fine adjustment of each cutting edge through its segmented adjustment elements. This multi-functionality resolves the contradiction by combining both control modes in a single device.
2Manufacturing precision
If individual cutting edge adjustment devices are integrated into each cutter carrier, then cutting edge wear compensation is achieved, but device complexity increases
Solution Approach 1:
The individual adjustment devices are merged with the common adjusting rod structure. The adjustment elements of the adjusting rod are integrated into the cutter carriers, combining the individual adjustment function with the synchronous control mechanism into a unified system, thereby reducing overall device complexity.
Solution Approach 2:
The adjustment elements are nested within the cutter carriers, with the adjusting rod passing through the base body and connecting to the cutter carriers. This nested arrangement allows individual adjustment functionality to be embedded within the existing structure without significantly increasing external complexity.
3Productivity
If multiple cutting tool holders are arranged axially on the base body, then multiple bearing webs can be machined simultaneously, but radial adjustment control becomes more difficult
Solution Approach 1:
The adjusting rod provides universal radial adjustment control for all axially arranged cutting tool holders through its segmented adjustment elements. This single mechanism controls the radial position of multiple cutters simultaneously, making radial adjustment easy despite the multiple tool holders arrangement.
Data Source
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AI summary
The invention relates to a multi-edged machining tool, in particular a bore post-machining or bore finishing tool, for example a bearing track tool, comprising a base body that can be driven in rotation about an axis of rotation, a plurality of cutting tool carriers which are arranged on the base body in an axially offset manner and preferably in a row, each cutting tool carrier having a carrier body with at least one cutting element, and a control rod which is mounted in the base body in an axially displaceable manner and on which the cutting tool carriers are supported in a radially adjustable manner. According to the invention, each cutting tool carrier has an adjustment device integrated into the carrier body, which interacts with a control element that is displaceably guided in the carrier body and protrudes radially therefrom, the control element being supported on the control rod.