Trunnion Table Machining Layout for Gravity Chip Removal
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Solution Overview
Problem
Traditional machining methods lack precision and effective material removal, particularly in complex components with high tolerances, as they often result in vibration and inefficient chip management.
Innovation Solution
A machining device with a trunnion table pivoting around a horizontal axis and a spindle moving in a horizontal plane to allow for gravity-assisted chip removal, providing stability and precision through separate vertical and horizontal movements, and optional additional features like rotating workpiece tables and dual spindles for enhanced precision and simultaneous machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional vertical or horizontal milling machines are used, then the machining process can be performed, but the precision and chip removal efficiency are insufficient
Solution Approach 1:
The patent inverts the traditional machining configuration by positioning the spindle and cutting tool below the workpiece, with the cutting tool directed upwards. This inversion allows chips to be effectively removed by gravity as they fall away from the workpiece surface, resolving the contradiction between maintaining machining precision and improving chip removal efficiency
2Device complexity
If the spindle and trunnion table movements are coupled, then the device structure is simpler, but vibration increases and precision decreases
Solution Approach 1:
The patent segments the movement functions by providing independent vertical movement for the trunnion table (carrying the workpiece) and independent horizontal movement for the spindle. This segmentation decouples the two movement directions, preventing vibration transmission between axes and enabling higher machining precision while maintaining reasonable device complexity through modular design
3Ease of manufacture
If the cutting tool works from above or from the side, then the machining process is conventional, but chip removal is ineffective
Solution Approach 1:
The patent inverts the conventional approach by positioning the cutting tool below the workpiece with the spindle directed upwards. This inversion fundamentally changes the chip removal mechanism, allowing chips to be efficiently evacuated by gravity as they naturally fall away from the cutting zone, eliminating chip accumulation problems associated with traditional top-down or side-approach machining
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 achieves improved precision and stability in machining by allowing gravity-driven chip removal and independent movement of machining components, reducing vibration and enabling higher precision and efficient handling of complex components with high tolerances.
Implementation Method 1
a spindle adapted to hold a cutting tool directed upwards and arranged to be moved in a plane parallel to the horizontal plane by a spindle transporting device
Implementation Method 2
such that in a cutting state, chips cut from the workpiece is removed from the workpiece by gravity
Data Source
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AI summary
A machining device (100) is provided. The machining device comprising a trunnion table (102) adapted to hold a workpiece (104) and arranged to pivot around a pivot axis (106) by means of a pivoting motor, wherein the pivot axis (106) is parallel to a horizontal plane, a spindle (108) adapted to hold a cutting tool (110) directed upwards and arranged to be moved in a plane parallel to the horizontal plane by a spindle transporting device (112), and a trunnion table transporting device (128a, 128b) adapted to vertically transport the trunnion table (102) towards and away from the cutting tool (110), such that in a cutting state, chips (202) cut from the workpiece (104) is removed from the workpiece (104) by gravity.