Integrated Profile Measuring Instrument Aligning Turntable Axis
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Solution Overview
Problem
The inefficiency in the positional adjustment of workpieces during rotary and linear scanning measurements for precision, particularly for complex shapes like aspheric lenses, due to the need for repeated centering and aligning on different measuring instruments, hinders operating efficiency.
Innovation Solution
A profile measuring instrument with a rotatable turntable and integrated rotary and linear scanning units, along with an aligning mechanism, allows for simultaneous rotary and linear scanning without the need for separate adjustments, enabling the measurement axis to pass through the rotation axis, thus simplifying the positional adjustment and improving operating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate roundness measuring instrument and profile measuring instrument are used for rotary scanning measurement and linear scanning measurement, then measurement precision can be maintained, but operating efficiency deteriorates due to repeated preliminary measurements and positional adjustments
Solution Approach 1:
The patent combines the roundness measuring instrument with rotary scanning capability and the profile measuring instrument with linear scanning capability into a single integrated measuring instrument. This allows both rotary and linear scanning measurements to be performed on the same workpiece without removing it from the turntable, eliminating repeated preliminary measurements and positional adjustments while maintaining measurement precision through coordinated operation of both scanning units
Solution Approach 2:
The integrated measuring instrument performs multiple functions: it can conduct both rotary scanning measurement (for roundness) and linear scanning measurement (for surface profile) using a single device with a shared turntable and coordinate measurement system. This multi-functionality eliminates the need to sequentially use separate specialized instruments, thereby improving operating efficiency while preserving measurement accuracy
2Measurement precision
If repeated preliminary measurements are performed for centering and aligning on different measuring instruments, then measurement precision can be ensured, but measurement time increases
Solution Approach 1:
The integrated instrument performs centering and aligning operations only once during initial setup, rather than requiring repeated preliminary measurements on each separate instrument. The shared turntable and coordinate system allow the workpiece to be centered once, and both rotary and linear scanning measurements can then be performed without additional centering or aligning steps, significantly reducing measurement time while maintaining positioning accuracy
3Adaptability or versatility
If workpiece is removed from turntable for linear scanning measurement, then measurement flexibility is improved, but operational complexity increases
Solution Approach 1:
The patent merges both rotary scanning and linear scanning measurement capabilities into a single instrument with a shared turntable and coordinate measurement system. This allows the workpiece to remain on the turntable throughout both measurement processes, maintaining measurement flexibility while reducing operational complexity by eliminating the need to remove and reposition the workpiece between different instruments
Data Source
AI summary
A profile measuring instrument usable to perform a rotary scanning measurement and a linear scanning measurement on a workpiece in the form of a revolution solid, includes: a turntable on which the workpiece is mounted, the turntable being rotatable around a predetermined rotation axis; a rotary scanning measurement unit being adapted to measure a displacement of a surface of the workpiece mounted on the turntable; a linear scanning measurement unit being adapted to measure a profile of the surface of the workpiece mounted on the turntable along a predetermined measurement axis; and an aligning mechanism being adapted to relatively move the linear scanning measurement unit and the turntable in a direction intersecting with the measurement axis. The linear scanning measurement unit and the turntable are adjusted to relative positions at which the measurement axis passes through the rotation axis.