A gripper is typically an end effector that is installed at the end of a robotic arm or on a cartesian robot and can be used to grip parts in order to transfer them from one location to another. However, there's more to it than just closing the jaws to pinch a part. In this post, we will explain how to properly grip a load while preventing damage.
Welcome to Oriental Motor's "Engineering Notes" Blog:
Products and technology are only valuable when coupled with skilled people and services to support them. ORIENTAL MOTOR U.S.A. CORP. has dedicated over 33 years to establishing a service and support system to better serve customers. It is our goal to provide the best product and service from the design phase, through the sale and beyond.
Our blog will feature:
- Introductions to New Products and Technology
- Application Examples, Improvements and Problem Solving
- Tips and Recommendations for Motor Selection, Installation and Use
Along with the advancement of industrial technology, the method of maintaining motion control components of a machine, such as motors, drives, and sensors, has also evolved. The most common method of maintaining a machine after a failure has occurred was the traditional method. Realizing the need for improvement, maintenance personnel started to estimate life and replace motion control components before they fail. More recently, with the advancement of IIoT (Industrial Internet of Things) and real-time availability of status data, another method was born. While the two newer methods have the same goal in eliminating machine downtime, only one does it efficiently.
Robot adoption is increasing in many industries due to global efforts in reducing long term costs, maintaining quality, and freeing up time for humans to do "human" tasks. For example, by using a robot to clean floors or restock shelves in a supermarket, human employees can spend more time helping or selling to their customers. A company can either tap into this robotic trend by buying ready-made robots, or by making their own with less cost. If engineering resources are limited, selecting the right components can reduce the difficulty and time for the build.
There are many mechanisms that convert rotary motion of an electric motor to linear motion, such as belt/chain drives, screw drives, rack & pinion drives and even CAM drives. Each mechanism offers advantages and disadvantages. Choosing the right technology can help increase load, speed, travel distance, or positioning accuracy.
An AC motor can be simple to use, but its speed changes according to the size of the load or amount of voltage supplied. For an application where keeping a uniform speed is important, there is another type of motor that can improve performance.
Are you using motors for a start/stop conveyor or similar application? While AC motors are a common choice for conveyors, there is a unique speed control motor solution available that could improve stop accuracy as well as reduce footprint and cost of machine designs.
What motors do you use for pumps? For variable speed pump applications that typically use 3-phase AC induction motors with variable frequency drives (VFDs), there is another type of motor that can transfer fluids more consistently and help reduce footprint.
In the world of industrial robotics, there are several types of robots typically offering multiple axes of motion for tasks such as parts assembly, material handling, or pick and place operations. These include articulated robots, cartesian/gantry robots, SCARA robots, and Delta robots. Variations of end effectors such as grippers, welders or part rotators can be mounted on the end of the arm to perform different tasks. Depending on number of axes or load capacity, costs can easily add up. Limiting the operation range for these robotic axes of motion is an easy way to prevent costly problems or safety issues later.
For applications where torque needs to be limited, an external mechanical torque limiter is typically required in addition to the motor system. When the torque exceeds the limit, the torque limiter will either decouple the load or limit the torque by slipping. An electric motor system's built-in torque limit function can simplify machine designs by eliminating this extra component.
A driver is a must-have for any stepper motor. In a stepper motor system, a driver controls how the motor operates based on signals received from the controller. It is responsible for sending current through various phases in a stepper motor and also regulates the motor current (torque) and step resolution. With recent trends of minimizing machine footprint, finding space to install drivers could be challenging.
Standard Stepper Motor System Configuration