Slotted Tool Holder Insert for Easier Clamping Slot Manufacture
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Solution Overview
Problem
The production of tool holders with radial slots for improved heat conduction and expansion is complex, especially for small sizes, due to the presence of threaded connections and internal coolant supply parts, which hinder the complete drawing of slots.
Innovation Solution
A separate insert is used in the tool holder body, allowing slots to be manufactured without interference from threads or connections, and can be easily connected for coolant or lubricant supply, with options for threading, gluing, welding, or pressing, and featuring a sealing lip for assembly ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If slots are drawn through the entire clamping area including threaded connections, then heat conduction is improved and expansion is enhanced, but production becomes complex and difficult for small tool holders
Solution Approach 1:
The tool holder is divided into two separate parts: the holder body containing the slots and the insert containing the threaded connections. The slots are manufactured in the holder body without interference from threads, while the insert is separately produced and then mounted into the holder body. This segmentation allows each component to be optimized independently for its specific manufacturing requirements.
Solution Approach 2:
The threaded connections are extracted from the holder body and placed in a separate insert component. This extraction removes the obstacle that previously prevented complete slot drawing through the clamping area, allowing slots to extend freely to the receptacle without being blocked by threads or other connecting parts.
2Adaptability or versatility
If threaded connections and internal coolant supply parts are present in the clamping area, then functional requirements are met, but slot drawing is hindered and production complexity increases
Solution Approach 1:
The functional components (threaded connections and coolant supply parts) are segmented into a separate insert that can be mounted in the holder body. This allows the slots to be drawn continuously from the front clamping area through the entire length to the receptacle without interruption, while the insert provides the necessary functional features.
Solution Approach 2:
The insert acts as an intermediary component that bridges the holder body and the functional requirements for coolant supply and tool clamping. It provides threaded connections and coolant supply interfaces without interfering with the slot geometry in the holder body, thus mediating between the conflicting requirements of slot continuity and functional features.
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 approach simplifies the production of tool holders by enabling slot manufacturing without complex threading and allows for efficient coolant supply, reducing heat input and enabling faster expansion with less material heating, while accommodating various tool interfaces.
Implementation Method 1
the front clamping area 6 can be heated, for example, by inductive heating, which increases the inside diameter of the receiving opening 7
Implementation Method 2
a plurality of slots or recesses which reduce the radial heat conduction cross section are provided in a radially inner peripheral part of a front clamping region
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a tool holder (1) for non-positively holding a rotatable tool by means of a receiving body (2) containing a receiving opening (7) with slits (16) extending radially from the inner wall (15) towards the exterior and running in the longitudinal direction of the receiving body (2). To permit a simple production process, the receiving body (3) has an insert (10) fixed into a receiving section (9).