Replaceable Tool Head Axial Radial Stops Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In machining operations, precise control of the cutting tool's location is crucial to prevent damage to workpieces and minimize the rejection of expensive parts, as axial and radial movements of cutting inserts or tool heads relative to toolholders can lead to inaccuracies and damage.
Innovation Solution
A cutting tool design featuring a toolholder with axial and radial stops, and a replaceable tool head with corresponding surfaces, which abut to prevent axial and limit radial movement, ensuring precise positioning and minimizing movement errors during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If replaceable tool heads are used to improve adaptability and reduce costs, then versatility and economy are improved, but positioning precision and movement control deteriorate due to potential displacement relative to the toolholder
Solution Approach 1:
The cutting tool is divided into two separate components: a reusable toolholder and a replaceable tool head. This segmentation allows the tool head to be changed for different cutting operations while the toolholder remains, providing versatility. The interface between these segments includes precision stops and fastening mechanisms to maintain positioning accuracy despite the replaceable nature of the tool head.
Solution Approach 2:
The toolholder acts as an intermediary between the machining system and the replaceable tool heads. It provides a stable mounting interface with precision axial and radial stops that ensure accurate positioning of any tool head attached to it, thereby maintaining manufacturing precision while allowing tool head replacement for versatility.
2Manufacturing precision
If tight tolerances are applied to minimize movement of the tool head relative to the toolholder, then positioning precision is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The toolholder and tool head include self-aligning features such as axial stops and radial stops that automatically establish the correct relative position when the components are assembled. The fastening mechanism (such as threaded connection or clamp) automatically applies the necessary clamping force to secure the tool head in position, eliminating the need for complex adjustment procedures or highly skilled assembly operations.
Solution Approach 2:
The axial stop and radial stop features are pre-positioned during manufacturing of the toolholder and tool head. These stops are designed to engage at specific predetermined positions that establish the correct relative alignment. By preparing these stopping features in advance during manufacturing, the actual assembly process becomes simpler and more repeatable, reducing both device complexity and manufacturing difficulty.
3Manufacturing precision
If axial and radial stops are implemented to prevent movement, then positioning precision is improved, but the risk of over-constraint and binding during thermal expansion or manufacturing variations increases
Solution Approach 1:
Different regions of the toolholder-tool head interface have different functional qualities. The axial stop region provides precise axial positioning, while the radial stop region provides radial positioning. The fastening region provides clamping force. By localizing different functions to different areas of the interface, each stop can be optimized for its specific direction without creating excessive overall constraints that would cause binding during thermal expansion or manufacturing variations.
Data Source
AI summary
The present invention relates to a tool head preferably for milling. The tool head is connectable to a toolholder. The tool head includes a cutting portion and a mounting portion. The mounting portion includes an axial stop surface and a radial stop surface. Dimensions and tolerances of the axial stop surface and the radial stop surface are selected such that the axial stop surface will abut an axial stop on the toolholder to prevent axial movement of the toolholder relative to the tool head beyond the axial stop surface and the radial stop surface will be disposed proximate a radial stop of the toolholder to limit radial movement of the tool head relative to the toolholder when an integral fastening portion of the tool head and an integral fastening portion of the toolholder are fastened directly to one another and the axial stop surface and the axial stop abut.