Circular Grinding Machine Vertical Axis Alignment
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Solution Overview
Problem
Cylindrical grinding machines face limitations in machining accuracy due to potential tilting between the grinding wheel and workpiece, which restricts the achievable precision and dimensional accuracy, while also requiring a compact design to minimize space usage.
Innovation Solution
The cylindrical grinding machine design features a swivel table and fixed workhead with a tailstock, where the grinding wheel is positioned above the workpiece, allowing both axes of rotation to be aligned in a vertical plane, enabling precise axial movement of the grinding wheel via a longitudinal guide, and incorporating a dressing unit for high accuracy dressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the grinding wheel is positioned above the workpiece with both rotation axes aligned in a vertical plane, then machining accuracy is improved, but the machine structure becomes more complex
Solution Approach 1:
The patent combines the grinding wheel positioning system and workpiece support system into a unified structure where both rotation axes are aligned in a vertical plane. The headstock and tailstock are integrated with the grinding wheel mounting structure, creating a compact arrangement that achieves high machining accuracy without proportionally increasing overall structural complexity.
Solution Approach 2:
The patent transitions from horizontal axis alignment to vertical plane alignment of the rotation axes. By positioning both the workpiece rotation axis and grinding wheel rotation axis in a vertical plane, the system achieves superior machining accuracy while maintaining a manageable structural footprint through vertical space utilization.
2Manufacturing precision
If a dressing unit is integrated into the machine bed, then dressing accuracy is improved, but the machine occupies more space
Solution Approach 1:
The dressing unit is nested within the machine bed structure, with the dressing wheel and its support mechanism integrated into the existing bed framework. This nesting approach allows the dressing function to be accommodated within the machine's footprint without requiring additional external space, while still achieving high dressing accuracy through precise positioning mechanisms.
Solution Approach 2:
The machine bed serves multiple functions: it supports the workpiece, mounts the grinding wheel, and integrates the dressing unit. By making the machine bed a multi-functional platform, the patent achieves high dressing accuracy without proportionally increasing the overall machine size, as the same structural elements serve multiple purposes.
3Stability of the object's composition
If the workpiece holder is fixed on the machine bed, then workpiece stability is improved, but the machine becomes less adaptable to different workpiece configurations
Solution Approach 1:
The workpiece holder system incorporates adjustable elements that allow the holder to be reconfigured for different workpiece types and sizes. While the holder remains fixed to the machine bed for stability, the adjustable components enable adaptation to various workpiece configurations, combining stability with versatility.
Solution Approach 2:
The workpiece holder system allows for parameter adjustments such as position, orientation, and clamping force to accommodate different workpiece configurations. These parameter changes enable the fixed holder to adapt to various workpiece types while maintaining stability during the grinding operation.
Data Source
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AI summary
The present invention relates to a circular grinding machine for grinding a cylindrical workpiece. The circular grinding machine comprises a machine bed (03) which supports a pivoting table (07) on which a workpiece headstock (08) is arranged such that it can be fixedly mounted to drive the workpiece in rotation and on which a tailstock (11) is fixably arranged. A first rotation axis is defined by the workpiece headstock (08) and the tailstock (11). The pivoting table (07) is pivotable about a pivot axis relative to the machine bed (03). The circular grinding machine additionally comprises an abrasive disc (06) which is rotatable about a second rotation axis. The first rotation axis and the second rotation axis are arranged jointly in a vertical plane, with the second rotation axis being arranged above the first rotation axis. A longitudinal guide (17) arranged in this vertical plane is used to axially displace the abrasive disc (06). A dressing unit (16) is arranged next to the tailstock (11) on the machine bed (03) in the axial direction relative to the first rotation axis.