Counterbalanced Boring Tool with Elastic Clamping
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Solution Overview
Problem
Existing boring tools face challenges in achieving precise balancing at high rotary speeds due to complex and costly clamping mechanisms, which can result in slight unbalances during fine adjustments.
Innovation Solution
A clamping device that elastically deforms the main tool body to securely clamp the tool holder and counterweight in their bores without direct contact, using a slot and screwthread mechanisms to ensure precise balancing, with optional guide means for the counterweight's movement and materials of different densities for optimal balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping member is used to contact both the tool holder and counterweight simultaneously, then the parts can be clamped fast, but the construction becomes complicated and expensive to manufacture
Solution Approach 1:
The patent introduces the main tool body as an intermediary element that transmits clamping force to both the tool holder and counterweight. Instead of a separate clamping member contacting both parts directly, the clamping force is applied to the main tool body, which then braces both components through its elastic deformation. This eliminates the need for a complex multi-contact clamping mechanism.
Solution Approach 2:
The patent extracts the direct contact function from the clamping member. The clamping member no longer needs to contact both the tool holder and counterweight simultaneously. Instead, it only needs to deform the main tool body, which then provides the bracing action. This simplifies the clamping mechanism by removing the requirement for simultaneous multi-point contact.
2Reliability
If the clamping member contacts the tool holder and counterweight simultaneously, then both parts can be secured, but slight unbalance may occur during fine adjustment
Solution Approach 1:
The main tool body serves as an intermediary that distributes clamping force uniformly to both the tool holder and counterweight. This indirect clamping through the tool body's elastic deformation ensures simultaneous and uniform bracing of both parts, eliminating the precision alignment issues that would occur with direct contact clamping members.
Solution Approach 2:
The patent changes the physical state of the main tool body from rigid to elastically deformed during clamping. By applying clamping force that causes elastic deformation, the tool body naturally adjusts to brace both the tool holder and counterweight simultaneously and uniformly, ensuring precise balancing without the need for complex adjustment mechanisms.
3Adaptability or versatility
If the tool holder is movable in the radial direction for adjustment, then the boring tool can be adapted to different machining requirements, but the tool becomes unbalanced requiring re-balancing
Solution Approach 1:
The patent employs a counterweight that moves in opposition to the tool holder when the screw element is rotated. As the tool holder moves radially for adjustment, the counterweight automatically compensates by moving in the opposite direction, maintaining balance throughout the adjustment range without requiring separate re-balancing operations.
Solution Approach 2:
The patent creates a dynamic balancing system where the counterweight automatically adjusts its position in response to tool holder movement. The screw element with opposite screwthreads couples the tool holder and counterweight mechanically, ensuring that any radial displacement of the tool holder produces a corresponding opposite displacement of the counterweight, maintaining balance dynamically during 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
The solution provides a reliable and precise balancing function, reducing manufacturing costs and ensuring stability at high rotary speeds by automatically maintaining balance during machining operations.
Implementation Method 1
the main tool body has a clamping device, by means of which the main tool body can be elastically deformed so that both the tool holder and also the counterweight are respectively clamped in the bore
Data Source
AI summary
The invention concerns a boring tool comprising a main tool body and a tool holder which is adjustable relative thereto, as well as a counterweight coupled to the tool holder in such a way that upon a movement of the tool holder in one direction a movement of the counterweight occurs substantially in the opposite direction, wherein both the tool holder and also the counterweight are respectively arranged at least in part in a bore in the main tool body. To provide a boring tool of the above-mentioned kind which is suitable in particular for high rotary speeds, which is advantageous in terms of manufacture and which in addition provides a reliable precise balancing function, it is proposed in accordance with the invention that the main tool body has a clamping device, by means of which the main tool body can be elastically deformed so that both the tool holder and also the counterweight are respectively clamped in the bore.