Ceramic Thread Grinding via Rotating Fixture and Milling Axle
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Solution Overview
Problem
Current methods for threading ceramic materials are inefficient and often result in unsatisfactory finishes or parts being out of tolerance, particularly when producing large batches, and existing techniques struggle to maintain quality and efficiency in the manufacturing process.
Innovation Solution
A method utilizing a vertical milling machine with a rotatable fixture and a milling axle equipped with a grinding wheel, capable of moving along X-Y-Z axes, to grind threads into ceramic work pieces, including the use of a grinding wheel stack and computer-controlled movement for precise thread creation, while applying a fluid if necessary, to improve efficiency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional threading methods are used on ceramic work pieces, then the process can be completed, but the finish quality is unsatisfactory and parts are out of tolerance
Solution Approach 1:
The patent replaces traditional mechanical threading operations with a grinding-based system. A grinding wheel with abrasive grains is used to grind the thread form into the ceramic work piece instead of using cutting tools, providing better finish quality and tolerance control for hard ceramic materials.
Solution Approach 2:
The patent changes the operational parameters by using a rotating grinding wheel with controlled abrasive action rather than conventional threading tool parameters. The grinding wheel rotation speed, feed rate, and abrasive grain characteristics are optimized to achieve precise thread geometry on ceramic materials.
2Productivity
If traditional threading methods are used for large batches, then the process can handle volume, but output time increases and efficiency suffers
Solution Approach 1:
The patent enables continuous threading operations by using a rotating grinding wheel that maintains constant contact with the rotating ceramic work piece. This continuous grinding action eliminates the intermittent cutting and repositioning required in traditional threading, reducing cycle time for batch production.
3Ease of manufacture
If conventional threading tools are used on ceramics, then the operation can be performed, but the material integrity is compromised and satisfactory finishes are not achieved
Solution Approach 1:
The patent substitutes abrasive grinding for mechanical cutting when working with ceramic materials. The grinding wheel's abrasive grains remove material through controlled abrasion rather than brittle fracture, preserving the ceramic's structural integrity while achieving the desired thread form.
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 method enhances the efficiency and quality of threading ceramic materials by allowing for precise control over the grinding process, reducing the likelihood of errors and ensuring consistent, high-quality thread creation, even for large batches, while maintaining the integrity of the ceramic material.
Implementation Method 1
grinding a thread into the work piece with the tool
Data Source
AI summary
A vertical mill machine may be configured to facilitate a process of grinding a thread into a work piece. In one example, the method includes securing a fixture onto a planar surface of a vertical mill machine, the fixture being rotatable. The method further includes securing a work piece to the fixture and rotating the work piece about a Y-axis. The method yet further includes positioning a milling axle configured to move about an X-Y-Z-axis adjacent a circumferential surface of the work piece, wherein the milling axle includes a tool and wherein the tool is configured to rotate about the Y-axis. The method further includes rotating the tool about the Y-axis and contacting the tool with the circumferential surface of an exposed end of the work piece. The method yet further includes grinding a thread into the work piece with the tool.