Counterbalanced Boring Tool Coaxial Adjustment
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Solution Overview
Problem
Existing boring tools face challenges in balancing at high speeds due to radial adjustments, leading to imbalances and increased manufacturing costs, with existing counterweight systems being prone to misalignment and axial spacing issues.
Innovation Solution
The tool carrier and counterweight are arranged on the same axis within the tool body, with a clamping device allowing elastic deformation to securely clamp them in place, and a screw element with dual threads ensures precise opposite movement, utilizing materials of different densities for effective balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tool carrier is adjusted radially to change the machining radius, then the adaptability is improved, but the balancing precision deteriorates because the center of gravity changes
Solution Approach 1:
A counterweight is integrated into the tool carrier assembly that moves radially in opposition to the tool carrier. When the tool carrier is adjusted to a new radial position, the counterweight automatically compensates by moving in the opposite direction, maintaining the center of gravity at a constant position and eliminating the need for rebalancing after adjustment.
2Reliability
If a clamping element contacts both the tool carrier and counterweight simultaneously to secure them, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The clamping mechanism is designed so that a single clamping element simultaneously secures both the tool carrier and counterweight within the bore. This unified clamping approach ensures both components are fixed reliably without requiring separate clamping mechanisms, thereby maintaining reliability while reducing overall complexity.
3Ease of manufacture
If the counterweight and tool carrier are spaced apart in the axial direction, then the ease of manufacture is improved, but the balancing precision deteriorates due to moment changes during adjustment
Solution Approach 1:
The counterweight and tool carrier are arranged coaxially within the bore rather than being spaced apart axially. This radial/coaxial arrangement ensures that during radial adjustment, the moments remain constant because the adjustment occurs in a plane perpendicular to the axis, eliminating moment changes while still allowing easy manufacturing through standard boring operations.
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
This arrangement maintains a stable center of gravity, reduces forces, and ensures precise balancing without direct contact with the clamping device, resulting in a cost-effective and stable boring tool design.
Implementation Method 1
the tool body has a clamping device, with the help of which the tool body can be elastically deformed, so that at least the tool carrier and possibly also the counterweight are clamped in the bore
Data Source
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AI summary
The invention relates to a boring tool (1) having a base body (2) and a tool holder (4) adjustable relative thereto, as well as a counterweight (6) coupled to the tool holder (4) in such a way that when the tool holder (4) moves in one direction the counterweight (6) moves substantially in the opposite direction. The tool holder (4) and the counterweight (6) are both at least in part arranged in a bore (8) of the base body of the tool. In order to provide a drilling tool of the above-mentioned type that is suitable, in particular, for high rotational speeds, economical to produce and in addition ensures a reliable and precise counterbalancing function, the invention proposes arranging a tool holder (4) and a counterweight (6) in the same bore in the base body of the tool.