Improve Gripping Operation with Multiple Torque Limit Settings

Posted on

Robotic grippers are commonly used to handle parts during transportation. The power source for these grippers can be pneumatic, hydraulic, or electric. Each option has its own advantages and disadvantages depending on the specific application needs and the size of the load. While hydraulic systems offer high power and pneumatic systems provide cost-effecticiency, electric motors should not be overlooked due to their consistency, efficiency, ease of maintenance, and built-in driver functions.

In this article, we will explore how the torque limit function makes brushless motors an excellent solution for grippers.

CHALLENGE: Gradually increasing gripping force to securely hold the load
Gripper with pneumatic

Conventional Gripper

Equipped with a pneumatic device, this gripper is designed to pick up a load and transport it to the next process.

Problems with Pneumatic Grippers

While moving a heavy load of a certain mass, the gripper may drop the load due to inconsistent gripping force.

SOLUTION: Use the Torque Limit function to gradually increase gripping force

The Torque Limit function allows for incremental increases or decreases in motor torque as a percentage of the motor's rated torque. This feature is available on several closed-loop motor systems from Oriental Motor.

Gripper with BLE2-1

Practical Application Example

The Torque Limit function provides optimized multi-level gripping force to gradually increase the gripping force of a gripper and securely hold a load without damaging it.

How It Works

The torque of a motor can be increased or decreased by adjusting the current flowing through its windings. The Torque Limit function monitors and controls motor current to limit torque.

How To Use

  • Before operation, set the required torque limit settings either via the front panel of the driver or using the MEXE02 support software.
  • Start the motor and lightly grip the load with a low torque limit setting. Once the set torque limit is exceeded, the TLC output will turn ON.
  • Switch to a higher torque limit setting once the TLC output turns ON.
  • If the TLC output remains ON, it indicates that the load is securely gripped, allowing you to start the transporting process.

Timing Chart - Torque Limit Function

Torque limit

With 16 different speed and torque limit settings, the same BLE2 Series brushless motor and driver can be configured for various loads.

*For closed-loop stepper motor systems, up to 256 settings are offered.

Output Power 30 W, 60 W, 120 W, 200 W, 400 W
Torque Limit Setting Range* 0～300%
Max Number of Settings 16
Torque Limit Accuracy* ±10%
Speed Control Range* 80～4000 r/min

*The value when the rated torque value is 100%. An error up to a maximum of approximately ±10% (at rated torque and rated speed) may occur between the setting value and generated torque due to factors such as the setting speed, power supply voltage, and motor cable extension length. The BXⅡ Series offers a speed control range of 2～4000 r/min.

Here’s a demo video introducing the BLE2 Series brushless motor and driver, the Alarm Monitor function, and the Torque Limit function.

Need help with your application?

Contact Our Experts

If you're looking for more information or assistance, feel free to reach out to our experts today!

Automatic Drain

Automatic Drain,Auto Drain Valve,Auto Drainage,Automatic Condensate Drain

Hongrijia Depurate Facility Science & Technology Co.,Ltd. , https://www.yukafilter.com