Measuring robot hand for cylindrical grinders

[Measurement Method]
The robot hand incorporates a linear scale manufactured by Magnescale.
High-precision measurement is achieved by directly measuring the workpiece using a scale with a minimum resolution of 0.5 μm.

[Measurement Hand]
Multiple measurement points can be programmed for each workpiece (various diameters can be measured as long as the difference in diameter is within 15 mm).
Matsumoto Machinery’s strength lies in its ability to support the process until data is entered into the NC unit’s OFFSET. An option is also available to export measurement data to Excel.
The calibration function (zero correction) eliminates the need for a master workpiece. The jaws themselves incorporate a calibration function, and the calibration position and measurement position are designed to be as close as possible, resulting in a structure that is less susceptible to dimensional changes caused by temperature fluctuations.

[Hand for Combined Transfer and Measurement]
This hand performs both workpiece transfer and measurement using a single gripper.
The gripping force automatically switches between transfer and measurement modes.

Benefits of Multi-Point Measurement
Conventional fixed-dimension devices are expensive, so they typically measured a single point and estimated the diameters of other locations based on that value for correction.
However, when machining conditions differed, the estimated values sometimes did not match the actual measurements due to heat generation.
Multi-point measurement enables corrections based on direct measurements rather than estimates.