Artificial Tooth Machining with Dual-Nozzle Cooling and Collision Control
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Solution Overview
Problem
Existing artificial tooth machining apparatuses face challenges in accurately jetting water or air to contact points between tools and workpieces, leading to reduced machining precision, tool damage, and increased costs due to inefficiencies in synchronization and collision prevention, as well as high maintenance and waste of workpieces.
Innovation Solution
An artificial tooth machining apparatus with a supply unit providing water or air through first and second nozzle parts, a tool collision preventing controller, and a blocking unit to prevent chip introduction into the mechanism, enhancing precision and preventing tool collisions during machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water or air is jetted to contact points during machining, then heat and friction are reduced protecting the workpiece and tools, but machining precision is reduced due to inaccurate jetting and chip generation
Solution Approach 1:
A sensor is introduced as an intermediary component to detect the contact point between tool and workpiece, enabling accurate positioning of water/air jetting. This mediator resolves the contradiction by ensuring cooling fluid is precisely delivered to the friction point without compromising machining accuracy.
Solution Approach 2:
The system uses sensor feedback to detect contact points and dynamically adjust water/air jetting positions during machining. This closed-loop feedback mechanism ensures precise delivery of cooling fluid to actual contact zones, maintaining both temperature control and machining precision.
2Productivity
If two spindles are used for machining both sides of workpiece, then productivity is improved, but tool collision risk increases reducing reliability
Solution Approach 1:
Sensors on both spindles provide real-time feedback on tool positions and contact points. The control system processes this feedback to detect potential collision conditions and adjust spindle movements accordingly, enabling safe dual-spindle operation that maintains both productivity and reliability.
Solution Approach 2:
The system performs preliminary detection of tool positions and workpiece geometry before machining operations begin. This advance preparation allows the control system to plan tool paths that prevent collisions between dual spindles, ensuring reliable operation from the start.
3Measurement precision
If tools rotate to check accurate position of workpiece, then positioning accuracy is improved, but workpiece is damaged
Solution Approach 1:
The sensor detects workpiece position and geometry before tools begin rotation. This preliminary measurement allows the system to establish accurate reference coordinates without rotating tools, eliminating workpiece damage while maintaining positioning accuracy.
Solution Approach 2:
The patent replaces mechanical tool rotation with optical or sensor-based detection for workpiece positioning. This substitution eliminates the harmful mechanical contact and rotation that damage the workpiece while achieving the same positioning accuracy through non-contact sensing.
4Reliability
If synchronization and collision prevention measures are implemented for two spindles, then tool damage is prevented, but productivity is reduced due to extended setup time
Solution Approach 1:
The sensor system automatically detects contact points and tool positions without requiring manual synchronization setup. The system self-calibrates and adjusts spindle coordination autonomously, eliminating time-consuming manual setup while maintaining reliable collision prevention.
Solution Approach 2:
All synchronization and collision prevention parameters are automatically determined in advance through sensor detection before machining begins. This preliminary automated setup eliminates the need for extended manual configuration time while ensuring tools are properly protected 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
The solution enhances machining precision, reduces tool damage, minimizes waste, and lowers maintenance costs by accurately supplying cooling agents and preventing tool collisions, thereby improving productivity and reducing the burden on patients.
Implementation Method 1
a first nozzle part for jetting water or air to the first tool at the time of machining the workpiece... a second nozzle part for jetting water or air to the second tool at the time of machining the workpiece... to protect the workpiece and a tool from heat and pressure generated due to frictional contacts
Data Source
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AI summary
Disclosed is an artificial tooth machining apparatus which protects a workpiece and first and second tools from heat and frictional contact that may occur when the workpiece is machined and enhancing machining precision by supplying water or air to the tools by a supply unit, a first nozzle portion, and a second nozzle portion, which has a lifespan lengthened by preventing chips of the workpiece or water or air from being introduced to a mechanism operation part of a base part by a discharge unit and a blocking unit, and which prevents a collision between the first tool and the second tool during machining of the workpiece by a tool collision preventing controller.