Tramming Apparatus with Multi-Indicator Calibration
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Solution Overview
Problem
Conventional tramming techniques for milling machines are time-consuming and require significant skill, leading to reduced productive time for machinists due to the need for iterative adjustments of multiple points on the mill head and spindle.
Innovation Solution
A system and method utilizing a calibration device fixed on the mill table with indicators spaced apart perpendicular to the spindle body, allowing for simultaneous calibration and adjustment to ensure all indicators read the same value, thereby simplifying and accelerating the tramming process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional iterative tramming techniques are used to ensure perpendicularity of mill head and spindle, then measurement precision is improved, but loss of time increases significantly
Solution Approach 1:
The tramming apparatus segments the measurement function into multiple indicators (at least two, preferably three or more) spaced apart on a common plane perpendicular to the body shank. This segmentation allows simultaneous measurement at multiple points on the mill table, eliminating the need for iterative single-point measurements while maintaining perpendicularity accuracy.
Solution Approach 2:
The patent merges multiple measurement functions into a single tramming apparatus by mounting multiple indicators on a common body that attaches to the spindle. This consolidation allows all indicators to be calibrated and measured simultaneously against the mill table, reducing tramming time while ensuring consistent perpendicularity across all measurement points.
2Productivity
If conventional single-point calibration is used for each indicator, then device complexity is reduced, but productivity decreases due to sequential adjustment requirements
Solution Approach 1:
The tramming apparatus provides multi-functionality by enabling simultaneous calibration and measurement of multiple indicators through a single unified structure. The body shank with multiple indicators spaced on a common plane allows the apparatus to perform what would otherwise require multiple separate calibration operations, significantly improving machinist productivity without excessive complexity.
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 significantly reduces tramming time while maintaining accuracy, allowing machinists to be more productive and proficient, even in the presence of machine irregularities such as burrs or worn parts.
Implementation Method 1
The calibration device may be a magnet and any other device capable of temporarily remaining fixed in a predetermined place on the mill table during calibration
Data Source
AI summary
A system and method for quick and accurate tramming are disclosed. The system includes an apparatus comprising a plurality of indicators spaced apart in a plane perpendicular to a body shank and connected thereto, the body shank configured to be received into the spindle. The system also includes a calibration device configured to temporarily remain fixed in place on the mill table to provide a single point of calibration for each indicator received in the apparatus. The method includes calibrating the indicators one at a time by positioning an indicator shank tip atop the calibration device and adjusting the indicator to read a calibration value common to all the indicators. The spindle is moved toward the mill table until at least one indicator tip touches the mill table and the mill head is adjusted until all indicator tips touch the mill table and all indicators read the same value.