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XGT2-C/XGL2-C/XGS2-C

XGT2-C/XGL2-C/XGS2-C
4Pages

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XGT2-C/XGL2-C/XGS2-C High gain supported High torque High Rigidity Vibration absorption Electrical Insulation In a production facility which uses servomotors, improved productivity is operating these components accurately, as directed by a program. However, occasionally the command execution may be delayed. Command Actual operation Motor revolution single-axis actuators and ball screws, the key to of the disk type. The width of the gain relative to 0 dB when the phase delay on the Bode plot is General guidelines for servo systems call for setting the gain margin between 10 and 20 dB and the phase margin between 40° and 60°but as the servomotor gain is increased, the gain margin decreases. When the , Command time to reach stop position later than the command, which we refer to as a Stabilization time Time to reach actual stop position delay in stabilization time. Since the operation A comparison with the disk type limit gain (upper limit of the gain in which coupling can be used without hunting) shows not only that the high-gain rubber type features a larger gain margin, but also that the gain margin is over 10 dB. This is why the high-gain rubber type allows greater servomotor gain than the disk type. To increase the gain margin, both the coupling damping performance and its dynamic rigidity must be high. ➡ P. does not shift to the next process until the actuator completely stops, it is important to shorten stabilization time and thereby improve productivity. Gain margin at the disk type limit gain High-gain rubber type : 17.40 dB and stabilization time of servomotor coupling with a metal disk type in the elastic segment, raising the gain tends to cause hunting, making it difficult to resolve the problem by fine adjustments to parameters. When hunting occurs, it is generally recommended to change to a coupling with higher rigidity to increase the rigidity of the rotating system. However, in reality, it is not possible to increase Command High-gain Low gain t1 t2 t1: Stabilization time at high-gain t2: Stabilization time at low-gain the rigidity of the entire rotating system including changing to a highly rigid coupling such as a disktype may not be effective. Rubber Type XGL2-C The high-gain rubber type can be used at even higher gain than high-rigidity couplings such as the the ball screw simply by changing the coupling; so The vibration absorption function reduces the amount of parameter adjustment work, and lowers Larger gain margin compared to the disk type Allows higher servomotor gain settings disk type, enabling reduction of stabilization time. the time required to find optimal parameters. However, when a servomotor is combined with a Disk type requires fine adjustment of the servomotor High-gain rubber type Increasing the gain while suppressing hunting making servomotor control impossible. time, but increasing it too far causes hunting, Increasing the gain helps to reduce stabilization Measurement of disk type limit gain Disk type This shows how the servomotor gain movement called the gain margin gain margin falls below 10 dB, hunting tends to occur. predetermined position, sometimes it will stop and the phase width relative to the frequency intersecting at 180° called the phase margin. is For example, when trying to stop the actuator at a can gain be increased even further with high-gain rubber types than with disk types? The Bode plot makes it clear why the high-gain rubber type can increase servomotor gain beyond the capacity Measurement of high-gain rubber type limit gain Zero Backlash Flexible Couplings - High - gain Rubber Type Patented Servomotor gain Smaller gain margin compared to the high-gain

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Zero Backlash High gain supported High torque Flexible Couplings - High - gain Rubber Type Patented Vibration absorption High Rigidity Electrical Insulation ■■ Technical Information ●● Damping performance comparison of high-gain rubber and disk types Damping ratio of high-gain rubber type that shows damping characteristics is far higher than that of the disk High-gain rubber type and the gain can be set especially high in the XG2 and XG series. There were no differences in stabilization time To reduce stabilization time, higher gain settings Repeated Positioning Accuracy (mm) ±0.002 1 3...

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Zero Backlash High gain supported High torque Flexible Couplings - High - gain Rubber Type Patented High Rigidity Vibration absorption Electrical Insulation ■■ Technical Information ●● Changes ●● Test in performance after cycles Rated torque load is applied to a coupling which A coupling is left at the prescribed ambient rotates in a single direction, and the damping ratio temperature for 4 hours and damping ratio and and dynamic rigidity are measured. dynamic rigidity measured. ●● Temperature-triggered XGT2-25C-12-12 in Damping Ratio Depending on Number of Cycles (Cumulative Rotation...

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Zero Backlash High gain supported High torque Flexible Couplings - High - gain Rubber Type Patented Vibration absorption High Rigidity Electrical Insulation ■■ Technical Information Reaction Force This is the force generated when placing XGT2-C This is the force generated when compressing XGT2-C the force acting on the shaft bearing also becomes As the eccentric reaction force becomes smaller, Reaction Force As the thrust reaction force becomes smaller, the force acting on the motor also becomes smaller. Load (N) Compression (mm) properties and chemical resistance of high-gain type rubber...

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XGT2-C/XGL2-C/XGS2-C 4Pages

Catalog excerpts

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XGT2-C/XGL2-C/XGS2-C
4Pages