Multi-Station Engraving Fixture for Synchronized Mug Rotation
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Solution Overview
Problem
Efficiently engraving multiple cylindrical objects, such as ceramic or glass mugs, requires incremental rotation to achieve a two-dimensional result, but existing systems lack a synchronized mechanism for tool passes and height adjustments, leading to inefficiencies and potential loss of focus during the process.
Innovation Solution
A fixture with drive and idler wheels, gang-adjustable for distance and height, and controlled by a stepper motor and pulley system, allows incremental rotation and synchronized laser passes along the X-axis, ensuring stable and precise two-dimensional engraving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If objects are mounted serially for efficient engraving, then productivity increases, but manufacturing precision deteriorates due to lack of synchronized rotation control
Solution Approach 1:
The patent combines multiple drive wheels into a synchronized system where all wheels rotate at the same speed and in the same direction, ensuring that objects at different stations remain properly oriented relative to the laser tool throughout the engraving process. This merging of rotation control enables both high productivity through multiple stations and precise two-dimensional engraving.
Solution Approach 2:
The patent incorporates feedback mechanisms through the synchronized drive system that monitors and maintains consistent rotational positioning of objects across all stations. The laser tool position is coordinated with object rotation status, ensuring precise engraving at each station while maintaining overall system productivity.
2Manufacturing precision
If tool height is adjusted frequently for different objects, then manufacturing precision is maintained, but time is lost due to repeated adjustments
Solution Approach 1:
The patent performs preliminary height adjustment by positioning objects at predetermined heights on the rotary table before the engraving process begins. Objects are pre-aligned so that their surfaces are at the correct focal distance from the laser tool, eliminating the need for frequent tool height adjustments during production and maintaining consistent focus throughout the process.
Solution Approach 2:
The patent creates an equipotential working surface where all objects are positioned at the same optimal height relative to the laser tool. This uniform positioning ensures that the laser remains at a consistent focal distance from all object surfaces, maintaining manufacturing precision without requiring time-consuming height adjustments.
3Manufacturing precision
If objects are held firmly to prevent movement, then manufacturing precision is improved, but ease of operation deteriorates due to loading difficulty
Solution Approach 1:
The patent employs dynamic clamping mechanisms that hold objects firmly during the engraving process but release or relax during loading and unloading phases. The rotary table design allows objects to be easily placed into position, then automatically secured for precise engraving, and finally released for removal. This dynamic approach maintains both manufacturing precision and ease of 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
Enables efficient and precise two-dimensional engraving of cylindrical objects by synchronizing tool passes and maintaining surface level, reducing the need for frequent tool adjustments and ensuring consistent focus during the process.
Implementation Method 1
a system of pulleys and drive belts connected around the pulleys to rotate the drive wheels and the objects being engraved simultaneously and incrementally
Implementation Method 2
the laser and the laser beam is moved back and forth along the horizontal X axis until the entire engraving process is completed
Implementation Method 3
means are provided to rotate the objects incrementally about a common axis parallel to the axis of tool movement thereby to allow synchronized multiple passes
Data Source
AI summary
A fixture for facilitating the serial engraving of a plurality of cylindrical objects such as glasses or mugs mounted on individual serially arranged stations along a master base plate. Each station includes a drive structure and, spaced therefrom, a passive support structure. The two structures in each station can be gang-adjusted for object length. In addition, the support structures can be height-adjusted to level the engraved surfaces of tapered objects. All of the drive structures include drive wheel pairs and all are driven by a single stepper motor via a single shaft and individual belt and pulley systems.