Accurate position measurement. No sampling delay.
High-precision latches are used for automatic measurement of tool lengths, shape inspection (measurement) with touch probes, and three-dimensional (3D) shape inspection (measurement). Touch probes (which detect contact with a special sensor) are attached to a multi-axis drive mechanism (head) and brought into contact with the workpiece being measured. At that time, the sensor input latches the feedback counter coordinates (stores them in hardware) to measure the positional information. For example, when considering a machine tool for metal processing, it enhances machining accuracy by inspecting the displacement of the metal workpiece when it is positioned and by inspecting the shape of the metal workpiece. When inspecting with a camera, it is often the case that the required precision is not achieved due to light reflections; however, with mechanical sensors and high-precision latches, consistent and high-precision inspection (measurement) is possible as they are not affected by external disturbances such as light.
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■Mechanism of High-Precision Latch The timing when a touch probe or similar device contacts the workpiece does not necessarily match the control cycle within the servo amplifier. The servo amplifier corrects the position information by comparing the position data it holds with the timing of the sensor's contact (which does not align with the servo amplifier's control cycle). However, the position information from the servo amplifier is based on data from the time the power is turned on, so it differs from the position information on the higher-level motion controller side. The higher-level motion controller receives the corrected position information from the servo amplifier and converts it into a coordinate system managed by the motion controller, making it user-friendly. Tekno's high-precision latch utilizes this conversion function to enable high-precision shape inspection and correction operations. ■Features of Tekno's High-Precision Latch - Compatible with macro functions It is possible to assign or read the measured position information to macro variables, allowing for flexible use in operation programs, PC software, and PLC ladders. - Capable of multi-axis synchronized measurement It is also possible to input sensor signals from touch probes and other devices in parallel to multiple servo amplifiers for synchronized measurement.
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Company information
Techno has consistently developed and sold "motion controllers" for over 35 years since its founding. Our greatest mission is to enable the more flexible use of advanced NC technology. To achieve this, we have realized "the openness of NC technology," "downsizing (miniaturization and minimal hardware)," and "a wealth of precise motion functions." Thanks to this, our products are used in over 600 themes and tens of thousands of devices. *These include precision machining machines (cutting, grinding, polishing, milling, boring, discharge, laser, water jet, etc.), winding machines, unwinding machines, industrial robots, 3D printers, pipe benders, spring manufacturing, film rolls, inspection devices, and more. We believe that our products, technology, know-how, and experience will continue to contribute to customers aiming for world-class top-level equipment.
