Engraving Tool Holder With Internal Cooling And Adjustable Force
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Solution Overview
Problem
Current engraving tool holders require partial disassembly to change styluses and lack efficient pressure control and cooling systems, making them inconvenient for varying material hardness and temperature issues during machining processes.
Innovation Solution
A tool holder design featuring a removable stylus sleeve, adjustable pre-loaded force with a first spring and a secondary flexure spring for increased pressure, internal coolant and lubrication system, and an integral shank with a coupling system for rotation, allowing for consistent force application and improved cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the entire tool holder is disassembled to change the stylus, then the stylus can be replaced, but the operation time and complexity increase
Solution Approach 1:
The tool holder is divided into separate components: a reusable main body and a removable stylus assembly. The stylus assembly includes a stylus, a retaining ring, and a sleeve that can be removed as a unit from the main body without disassembling the entire tool holder. This segmentation allows rapid stylus replacement by simply detaching the sleeve while keeping the main body intact.
2Force
If standard springs are replaced with stronger ones for harder materials, then the force increases, but the device complexity and maintenance effort increase
Solution Approach 1:
The tool holder employs a dynamic force adjustment mechanism where a compression force adjustment member can be moved axially to vary the preload on a single spring. This allows the operator to adjust the stylus pressure from light to heavy forces by simply repositioning the adjustment member, eliminating the need to physically replace springs for different material hardness requirements.
3Temperature
If coolant fluid is applied externally to the stylus, then cooling is provided, but the lubrication and cooling efficiency decrease
Solution Approach 1:
The stylus is designed with an internal coolant passage nested within its structure. Coolant fluid is delivered through a delivery member that inserts into this internal passage, allowing the coolant to flow directly through the stylus from the inside. This nested configuration ensures efficient cooling and lubrication of the stylus tip and surrounding areas, as the coolant reaches the hottest spots directly rather than being applied externally.
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
Enables easy stylus replacement, consistent force application, and effective cooling, enhancing the precision and efficiency of engraving processes on different materials without the need for spring replacement or complex disassembly.
Implementation Method 1
a first spring which on a lower end directly or indirectly abuts a stylus holder and on an upper end directly or indirectly abuts a compression adjustment abutment, the first spring configured to impart a biasing force on the stylus when compressed by the compression adjustment abutment; and a second flexure spring with a bias force higher than the biasing force imparted by the first spring
Implementation Method 2
a coolant passageway which provides a passageway for coolant to be provided through the body and outlet at or near the stylus
Data Source
AI summary
Disclosed is a scribing or engraving tool for use to mark, scribe or engrave using a a CNC, engraving or other automated machine. More particularly some examples of the invention include a coolant passageway for providing coolant to the stylus, and others provide a second spring which engages when desired for applying more pressure to the toolbit when desired. In yet another embodiment a coupling system may be used to provide for the rotation of the stylus holder and stylus to provide for engraving.