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          4. Optical Micrometer / Laser Micrometer
          5. High-speed 2D Optical Micrometer

          High-speed 2D Optical Micrometer

          TM-3000 series

          Because the system works in two dimensions it can...

          Measure single point and edge dimensions

          Measuring the outer diameter of an inclined target

          Measuring the outer diameter of a catheter

          Measuring the outer diameter of an inclined target

          TM-3000 Series

          Since the TM-3000 Series measures outer diameter based on a 2D image, and can provide information on the target inclination. The system can measure outer diameters while correcting for target inclination automatically.

          Conventional Techniques

          If the target inclines, the scanned diameter becomes larger (The gray curve in the graph on the right), resulting in incorrect measured values.

          Measuring the outer diameter of a target with a rough surface

          
Measuring the outer diameter of a copy roller

          Measuring the outer diameter of a target with a rough surface

          TM-3000 Series

          The inspection area is defined based on a captured image of the target. Calculating the average of the diameters within a given area minimizes the error caused by surface roughness.

          Conventional Techniques

          When a target with a rough surface was measured, the measured value fluctuated depending on the measurement position, resulting in significant error.

          Measuring the outer diameter at multiple points at narrow intervals

          
Measuring the outer diameter of an injection needle

          Measuring the outer diameter at multiple points at narrow intervals

          TM-3000 Series

          With the TM-3000, it is possible to obtain measured values by just specifying an inspection area around the desired section on the captured image. Unlike conventional micrometers, the measurement can be completed without the troublesome process of changing the target position or preparing a movement mechanism.

          Conventional Techniques

          With a laser scan system, there were only two methods of obtaining diameter data at narrow intervals. The first required moving either the target or the sensor, resulting in high maintenance cost and motion associated errors. The second required multiple sensors, which resulted in significant increase in initial costs and a more rigorous maintenance schedule.

          Measuring the runout at multiple points on a rotating target

          
Measuring the eccentricity at multiple points of a solenoid valve

          Measuring the runout at multiple points on a rotating target

          TM-3000 Series

          Setup is as simple as selecting the critical areas on a captured image of the target part. The measurement of the deviation at multiple points can be perfectly synchronized and conducted simultaneously, resulting in significant reduction in cycle time.

          Conventional Techniques

          Conventionally, the time required to obtain runout information at multiple points was expressed as: Number of measurement points x Rotation time, and also required time to move to the measurement points.

          Measuring the outer diameter at a fixed point

          Measuring the outer diameter of a drill bit

          Measurement result for a shaft of 10 mm diameter

          TM-3000 Series

          The position correction function allows outer diameter measurement at a fixed distance from a specified feature. Correcting the position displacement or inclination of the target enables reliable evaluation on an actual production line.

          Conventional Techniques

          Conventional micrometers required the preparation of a special fixture which aligns the target for measurement. Accurate inspection was difficult because the measured value varied due to position variation.

          Measuring diameter changes in a multi-diameter target

          Measuring the height difference/outer diameter of an injector

          PLC’s internal calculation using the result obtained with a laser scan type

          TM-3000 Series

          Effects of inclination can be corrected during measurement when calculating from 2D data. Both height difference and outer diameter can be measured with one sampling, allowing inline measurement.

          Conventional Techniques

          After the reference point was measured, the target was moved to measure the point of interest. The system required a movement mechanism which caused problems such as accuracy issues and higher cost. In addition, accurate measurement was difficult because the resulting value became larger when the target was not perpendicular to the measurement axis.

          Measuring the maximum/minimum outer diameter

          
Measuring the outer diameter of an ampule

          PLC’s internal calculation using the result obtained with a laser scan device

          TM-3000 Series

          All measurement is conducted simultaneously using the entire image, and the maximum diameter can be determined from the result. Since the maximum value is derived by inspecting the entire part at once, fixture errors are eliminated.

          Conventional Techniques

          Conventional micrometers were used to scan the target and then derive the maximum diameter from the scan data. The measurement took more time, or was not accurate due to errors introduced by the fixture.

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