Workpiece Grinding Method for Variable Ring Width
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Solution Overview
Problem
The existing TAIKO grinding process requires manual replacement of grinding wheels to accommodate different workpiece diameters or ring widths, leading to increased man-hours and reduced efficiency.
Innovation Solution
A workpiece grinding method that involves a combination of rotary-shaft direction grinding and radially directed grinding steps, allowing the grinding unit and chuck table to move relative to each other along the axis and in a radial direction, respectively, without replacing the grinding wheel, enabling the adjustment of ring width and grinding of workpieces with different diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual replacement of grinding wheel is performed to accommodate different workpiece diameters or ring widths, then the grinding process can be adapted to different specifications, but the man-hour increases and work efficiency decreases
Solution Approach 1:
The invention introduces dynamic adjustment of the chuck table's rotational speed and radial position during the grinding process. By varying the rotational speed of the chuck table and adjusting the radial position of the grinding unit, the system can adapt to different workpiece diameters and ring widths without replacing the grinding wheel, thus maintaining high productivity while achieving versatility.
Solution Approach 2:
The invention changes operational parameters including the rotational speed of the chuck table, the radial position of the grinding unit, and the feed rate to accommodate different workpiece specifications. These parameter adjustments allow a single grinding wheel to process various diameters and ring widths, eliminating the need for manual replacement and improving both adaptability and productivity.
2Manufacturing precision
If grinding wheel replacement is performed for different ring widths, then the grinding process can be optimized for each specification, but the time required for setup increases
Solution Approach 1:
The system dynamically adjusts the chuck table's rotational speed and the radial position of the grinding unit during operation. This dynamic control allows the same grinding wheel to achieve precise grinding results for different ring widths without time-consuming replacement operations, thus reducing setup time while maintaining manufacturing precision.
Solution Approach 2:
The invention performs preliminary adjustment of the chuck table's rotational speed and radial position parameters before grinding different specifications. By pre-configuring these parameters, the system can quickly transition between different workpiece sizes without physical wheel replacement, minimizing setup time while ensuring grinding precision.
3Adaptability or versatility
If the chuck table rotational speed and grinding unit radial position are adjusted dynamically, then versatility without wheel replacement is achieved, but the control system complexity increases
Solution Approach 1:
The invention implements dynamic adjustment of the chuck table's rotational speed and the grinding unit's radial position through a control system that monitors and adjusts these parameters in real-time. This dynamic control enables the system to adapt to different workpiece diameters without wheel replacement. While it increases control complexity, the system achieves the desired versatility through coordinated adjustment of these dynamic parameters.
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 allows for efficient grinding of workpieces with varying diameters or ring widths without replacing the grinding wheel, enhancing process efficiency and reducing manual labor, while maintaining the structural integrity of the workpiece by forming a circular thin plate portion and an annular protrusion portion.
Implementation Method 1
a plurality of grinding stones that are arranged in an annular pattern on one surface of the base and that have outer peripheral surfaces defining a circle of a diameter not greater than a radius of the workpiece
Implementation Method 2
the front surface of the workpiece is first held under suction with a chuck table
Data Source
AI summary
A workpiece grinding method includes a rotary-shaft direction grinding step of grinding a back surface of a workpiece by relatively moving a grinding wheel and a chuck table holding a front surface of the workpiece toward each other along an axis of a rotary shaft of the chuck table, the grinding wheel including a plurality of grinding stones that have outer peripheral surfaces defining a circle of a diameter not greater than a radius of the workpiece, and a radially directed grinding step of grinding the back surface of the workpiece by relatively moving the grinding wheel and the chuck table in a radial direction of the chuck table. The radially directed grinding step includes one of or both an inwardly directed grinding step of relatively moving the grinding wheel and the chuck table, and an outwardly directed grinding step of relatively moving the grinding wheel and the chuck table.