Detachable Reverse Countersinking Tool for Fast Head Exchange
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Solution Overview
Problem
Existing reverse countersinking tools require numerous clamping and unclamping processes on machine tools, necessitate insertion and removal through holes, and require different tool heads for varying counterbore radii, leading to increased processing costs and complexity.
Innovation Solution
A multi-part reverse countersinking tool with a detachable tool head and shank, featuring a connecting element with a diameter offset for elastic radial expansion, allowing for secure attachment and detachment without the need for machine tool clamping, enabling use with various shank diameters and facilitating easy tool head exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the tool head and tool shank are permanently connected, then the structural integrity is improved, but the adaptability to different shank diameters deteriorates
Solution Approach 1:
The tool is divided into two separable parts: a tool head and a tool shank. The tool head can be detached from the tool shank, allowing the user to select different shank diameters for different application requirements while maintaining structural integrity during operation through the connection element with form-fit and force-fit connection.
Solution Approach 2:
The tool head is designed with a universal connection interface that can accommodate multiple shank diameters (e.g., 6mm, 8mm, 10mm). This allows a single tool head to be used with different shank sizes, providing multi-functionality and adaptability without requiring separate tools for each diameter.
2Manufacturing precision
If the tool head is designed to fit specific shank diameters, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The connection element features a universal design with a conical seating surface and radial expansion capability that can accommodate multiple shank diameters. This universal interface maintains precise form-fit and force-fit connections across different sizes without requiring multiple specialized tool heads, thereby reducing device complexity while preserving manufacturing precision.
Solution Approach 2:
The connection element incorporates radial expansion capability that allows dynamic adjustment to match different shank diameters. The elastic deformation of the connection element enables it to adapt its inner diameter to fit various shank sizes while maintaining precise connection, eliminating the need for multiple fixed-size tool heads.
3Reliability
If the tool must be inserted through the through-hole for clamping, then the reliability of connection is improved, but the workpiece surface quality deteriorates
Solution Approach 1:
Instead of inserting the tool head through the workpiece from the front side for clamping, the tool is inserted from the back side of the workpiece. The connection between the tool head and shank is established from the rear, allowing the front surface of the workpiece to remain undamaged and free of scratches or deformations caused by clamping operations.
Solution Approach 2:
The tool shank acts as an intermediary element that passes through the workpiece while the tool head connects to it from the rear. This intermediary approach allows the connection mechanism to operate on the back side, protecting the front surface from damage while ensuring reliable connection through the shank-clamping interface.
4Reliability
If multiple clamping and unclamping processes are required, then the connection security is improved, but the productivity deteriorates
Solution Approach 1:
The tool system is segmented into a tool head and tool shank that can be quickly assembled and disassembled. This segmentation enables rapid tool changes without requiring multiple clamping and unclamping operations on the machine tool, as the tool head can be quickly attached to or detached from the shank outside the machine, significantly improving productivity while maintaining connection security 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
This solution reduces processing costs, minimizes damage to workpiece surfaces, and allows for flexible use with different diameters, enabling efficient countersinking and deburring of curved or angled surfaces without the need for frequent tool changes.
Implementation Method 1
The connecting element (36), which has a diameter offset from the guide section (28), engages in the tool head (18), in particular in the milling head (20), to produce the detachable connection. The connecting element (36) can expand essentially resiliently elastically radially in relation to the guide section (28)
Data Source
Figure 1~2
Figure 3~4c
Figure 5a~5d
AI summary
The invention relates to a multi-part countersinking tool (10) for clamping into a machine tool. The countersinking tool (10) comprises: a tool head (18) having a milling head (20); and a tool shaft (24) having a clamping section (26) for clamping in a machine tool and having a guide section (28) for guiding in a through-bore (14) having an actuation element (30). The tool head (18) and the tool shaft (24) are detachably connected to each other, wherein the tool head (18) and the tool shaft (24) are detached by an actuating motion of the actuation element (30) and the milling head (20) is mounted in a rotationally fixed manner with respect to the tool shaft (24) in the connected state.