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Case Studies > Proposal for an Electric Actuator That Enables Fine Dispensing in Small Spaces
Proposal for an Electric Actuator That Enables Fine Dispensing in Small Spaces
Issue: To Increase the Accuracy of the Dispensing Process and Downsize the Dispenser Drive Unit
As devices and workpieces have become smaller, general articulated robots have become too large and difficult to use.
Challenge:
- Since the Dispensing System is Designed for Small Workpieces, a Typical Articulated Robot Would Take Up Too Much Space. It is Necessary to Downsize the Dispenser
- Need to Increase the Rigidity of the Dispenser Section to Improve the Accuracy and Stability of the Dispensing Process
- Need to Reduce the Man-Hours for Wiring Sensors and Simplify Wiring
Solution: Highly Rigid Electric Actuator With Built-In Absolute Encoder Enables Downsizing of Precision Dispensing Mechanisms
The DGII Series integrates a highly rigid hollow rotary table and a motor with a battery-free built-in absolute encoder, eliminating the need for an external sensor such as a home sensor and saving space. Achieves higher precision and downsizing of the dispenser drive unit. Hollow holes can be used for wiring and piping.
Reduce Design Effort and Downsize Mechanisms
The output table of the hollow rotary actuator DGII series can be directly attached to the table or arm of equipment, and can also be mounted horizontally, on a wall, or on the ceiling. For the dispenser device, a precision X-Y stage is mounted on a ceiling-mounted θ-axis table, allowing the dispenser to be driven in tight spaces. Furthermore, in the Z-axis direction, combining it with a small linear slide downsizes the entire mechanism.
Downsizing Mechanism With Hollow Rotary Actuator DGII Series
Output Table With Highly Rigid Integrated Structure Enables Precise Dispensing
Hollow rotary actuator DGII Series combines a rotary table mechanism with a motor to achieve high-precision positioning. Non-backlash, repetitive positioning accuracy is ±15 arcsec (±0.004˚). If even greater precision is required, please select a product with a frame size of 85~200 mm, which uses cross roller bearings and has a smaller surface runout.
Battery-Free Built-In Absolute Encoder Equipped and Network Compatible for Simple Wiring
The αSTEP AZ Series is used for the motor of the hollow rotary actuator DGII Series. The motor is equipped with a battery-free absolute encoder (ABZO sensor) inside to retain positioning information even when power is not supplied. External sensors such as a home sensor or limit sensor are not required, which saves wiring. If you select a network compatible driver, you can connect the host controller and the driver with just a single communication cable, further reducing wiring.
Recommended Products
Actuator
Frame size □60 mm □85 mm □130 mm □200 mm
Compatible Drivers
AZ Series Drivers (Network Compatible, Built-in Controller, Pulse Input with RS-485 Communication, Pulse Input, Network Compatible Multi-axis, Mini)
- Servo motor AZX Series equipped with DGM200R (□200 mm) is also available.
Engineering Notes
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