Rotatable Insert Clamping Bolt With Adjustable Coolant Delivery
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Solution Overview
Problem
Existing clamping devices for cutting inserts require precise alignment with both the cutting insert and the holder, making them difficult to handle and limiting the ability to provide coolant to all parts of the cutting edge during operation.
Innovation Solution
A clamping device with a rotatable clamping bolt that engages with a locking bolt, allowing the clamping bolt to be pre-strained and maintain clamping force across various rotational positions, and featuring a coolant channel that can be rotated to supply coolant to different parts of the cutting edge, eliminating the need for precise alignment and enabling adaptable coolant delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional clamping device is used to secure the cutting insert onto the holder, then the cutting insert can be clamped, but precise alignment with respect to both the cutting insert and the holder is required, making the device difficult to handle
Solution Approach 1:
The clamping bolt is made rotatable about its longitudinal axis while maintaining the clamping force through a locking mechanism. This dynamic feature allows the operator to rotate the clamping bolt to any position within a rotation range of at least 45 degrees without requiring precise alignment, thereby improving ease of operation while maintaining secure clamping
Solution Approach 2:
The clamping device is divided into functional segments: a clamping bolt for applying clamping force, a locking bolt for maintaining pre-strain, and a wedge engagement mechanism for keeping the clamping bolt pre-strained during rotation. This segmentation allows each component to perform its specific function independently, enabling rotation without compromising clamping precision
2Ease of operation
If the clamping bolt is made rotatable to improve ease of operation, then alignment becomes less critical, but maintaining consistent clamping force during rotation becomes more difficult
Solution Approach 1:
The locking bolt is used to pre-strain the clamping bolt before rotation occurs. This preliminary action ensures that the clamping bolt is already under the necessary tension to maintain consistent clamping force during subsequent rotation, preventing loss of clamping stability
Solution Approach 2:
The wedge engagement mechanism acts as an intermediary between the rotating clamping bolt and the stationary locking bolt. It transfers and maintains the pre-strain force during rotation, ensuring that the clamping force remains consistent even as the clamping bolt changes angular position
3Temperature
If the clamping bolt is designed with a coolant channel to supply coolant, then cooling capability is improved, but precise alignment is required to direct coolant to the correct parts of the cutting edge
Solution Approach 1:
The coolant channel in the clamping bolt is positioned to rotate together with the clamping bolt. This dynamic positioning allows the coolant outlet to automatically align with different parts of the cutting edge as the clamping bolt rotates, eliminating the need for precise initial alignment while maintaining effective coolant delivery to the cutting zone
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 allows for secure clamping of the cutting insert across any rotational position, ensuring consistent clamping force and efficient coolant delivery to all parts of the cutting edge, even during milling operations, thereby simplifying handling and enhancing tool performance.
Implementation Method 1
the locking bolt pre-strains the clamping bolt into clamping the cutting insert onto the holder
Implementation Method 2
the clamping bolt wedge engages with the locking bolt during a clamping bolt rotation
Data Source
AI summary
A clamping device is configured to clamp a cutting insert onto a holder of a cutting tool. The clamping device contains a clamping bolt and a locking bolt, wherein the clamping bolt is configured to be inserted into each of the cutting insert and the holder. The locking bolt is configured to be inserted into the holder, such that the locking bolt pre-strains the clamping bolt into clamping the cutting insert onto the holder. The clamping bolt is configured rotatable about a longitudinal clamping axis of the clamping bolt relative to each of the cutting insert and the locking bolt, such that the clamping bolt wedge engages with the locking bolt during a clamping bolt rotation about the longitudinal clamping axis.