Adjustable Cutter Holder Locking Against Centrifugal Position Drift
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Solution Overview
Problem
Cutting tools experience machining inaccuracies due to centrifugal forces at high rotational speeds, causing the relative position of the cutting element to change, which affects machining quality.
Innovation Solution
A cutting tool design with a base body that can be rotated, featuring a radially adjustable cutter holder and an adjusting device with a fixing element to secure the cutter holder's position, allowing for precise adjustment and fixation, thereby absorbing centrifugal forces and maintaining machining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the cutter holder is resiliently mounted relative to the base body, then the cutter holder can be adjusted in a precise position, but at high rotational speeds the relative position changes due to centrifugal forces causing machining inaccuracies
Solution Approach 1:
The adjusting device is operated before machining to set the desired position of the cutter holder. The fixing element is then activated to lock the adjusting device in place, preventing any position changes during high-speed rotation. This preliminary positioning and locking action ensures both precise initial positioning and stable position maintenance during operation.
Solution Approach 2:
The fixing element acts as an intermediary between the adjusting device and the cutter holder. It transfers and locks the adjusted position, mediating between the need for adjustable positioning and the requirement for stable position fixation during high-speed rotation, thereby eliminating position drift caused by centrifugal forces.
2Reliability
If the cutter holder is fixed rigidly to the base body, then position stability is maintained, but the cutter holder cannot be adjusted radially for precise positioning
Solution Approach 1:
The system transitions from a static fixed connection to a dynamic adjustable connection. The cutter holder is initially adjustable through the adjusting device to achieve precise positioning, and then becomes fixed through the fixing element. This dynamic transition allows the system to兼具 both adjustability for precision and rigidity for stability during different operational phases.
Solution Approach 2:
The adjusting device is operated before machining to set the desired position of the cutter holder. The fixing element is then activated to lock the adjusting device in place, preventing any position changes during high-speed rotation. This preliminary positioning and locking action ensures both precise initial positioning and stable position maintenance during operation.
3Measurement precision
If compression springs with very high rigidity are used, then positioning precision is improved, but the resilient mounting cannot compensate for centrifugal force effects at high speeds
Solution Approach 1:
The fixing element acts as an intermediary between the adjusting device and the cutter holder. It transfers and locks the adjusted position, mediating between the need for adjustable positioning and the requirement for stable position fixation during high-speed rotation, thereby eliminating position drift caused by centrifugal forces.
Solution Approach 2:
The harmful effect of centrifugal forces is eliminated by extracting the cutter holder from the resilient mounting system during operation. The fixing element secures the cutter holder in a fixed position, removing it from the dynamic resilient system that would otherwise be affected by centrifugal forces at high rotational speeds.
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 design ensures high machining quality by maintaining the cutter holder's position relative to the base body, even at high rotational speeds, allowing for precise setting and adjustment of the cutting element, reducing machining inaccuracies and enabling efficient processing of multiple bearing ribs synchronously.
Implementation Method 1
the compression springs constantly exert a force on a set screw supported on the control element in the direction of the control element
Implementation Method 2
the relative position of the cutter holder and thus of a cutting element attached to the cutter holder is opposed due to centrifugal forces the body changes
Data Source
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AI summary
The invention relates to a cutting tool comprising a base body (16; 116), at least one cutting tool holder (12; 112) radially adjustable on the base body (16; 116), and an adjusting device (28) for adjusting the position of the cutting tool holder (12; 112) relative to the base body (16; 116). The cutting tool holder (12; 112) is displaceably arranged transversely to the axis of rotation in a guide recess (18) in the base body (16; 116). The adjusting device (28) has an adjusting element (32) that is adjustable in the base body (16; 116) transversely to the axis of rotation and transversely to the direction of displacement of the cutting tool holder (12; 112). The cutting tool holder (12; 112) is adjustably supported on the adjusting element (32) by an adjustment device (54) integrated into the cutting tool holder (12; 112). The cutting element carrier (12; 112) has a fixing element (17) that fixes the positionally adjusted cutting element carrier (12; 112) relative to the adjusting element (32) and thus relative to the base body (16; 116).