Tool Receptacle Insert Radial Compensation Vibration Damping
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Solution Overview
Problem
Existing tool holders for screw-in tools face challenges in radial compensation and vibration transmission due to precise manufacturing requirements, leading to potential axial offsets, concentricity errors, and thread damage, especially when using hard metal tools.
Innovation Solution
A tool holder design featuring a movable insert with radial play and a damping element, secured against rotation, allows for radial compensation and vibration reduction by adapting to thread misalignments and using form-fitting connections like cross pins or polygon profiles, and conical bearing surfaces for improved support and guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the tool holder and screw-in tool are manufactured with extreme precision to prevent axial misalignment, then concentricity and thread alignment are improved, but manufacturing cost and complexity increase
Solution Approach 1:
The insert is designed to be movable within the base body, allowing it to dynamically adjust its position radially to compensate for misalignments between the internal thread and the screw-in tool's external thread, eliminating the need for extreme manufacturing precision
Solution Approach 2:
The radial position of the insert is changed as a compensatory mechanism, allowing the thread alignment to adapt to manufacturing tolerances and prevent axial misalignment without requiring extreme precision in the base body threading
2Stability of the object's composition
If the insert is fixed rigidly within the base body, then structural stability is improved, but radial compensation capability and vibration resistance worsen
Solution Approach 1:
A damping element is introduced as an intermediary between the insert and the base body, allowing the insert to maintain its functional movability while reducing vibration transmission to the base body and improving overall system stability
Solution Approach 2:
The insert is designed with controlled mobility within the base body, enabling it to perform radial or tilting movements to compensate for misalignments while maintaining structural stability through the damping element
3Reliability
If the insert is made movable within the base body to compensate for misalignment, then thread damage risk is reduced, but radial play and positioning precision worsen
Solution Approach 1:
The radial position of the insert is allowed to change within controlled limits, enabling automatic compensation for thread misalignments and preventing thread damage while maintaining sufficient positioning precision for functional 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
This design reduces the risk of thread damage and concentricity errors while minimizing vibrations between the tool holder and screw-in tool, enhancing the tool holder's durability and performance, particularly with hard metal tools.
Implementation Method 1
At least one damping element can be provided between the insert and the base body. This allows the radial or tilting movement of the insert within the base body to be dampened. Furthermore, the damping element also reduces the transmission of vibrations between the tool holder and the screw-in tool.
Data Source
Figure 1~2
Figure 3~4
AI summary
A tool receptacle (2) for a screw-in tool (1) having a main body (13), which has a receiving region (14) including at least one conical contact surface (10) for supporting a corresponding conical support surface (9) of the screw-in tool (1). For thread-protection and for tightening with high concentricity and low production outlay, an insert (15) is disposed in the main body (13), said insert being movable transversely with respect to the longitudinal axis (17) of the main body (13) and being rotationally-fixed with respect to the main body (13) and having a mating thread (16) for a thread (6) on the screw-in tool (1).