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You are reading an old version of this documentation. If you want up-to-date information, please have a look at 5.0 .

7.2 Hopper Tuning

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Fig. 122 Asycube Configuration - Hopper Tuning

The hopper vibration must be correctly configured to feed a regular amount of parts on the Asycube plate. You must find a good balance between:

  • A slow flow that takes too much time to fill the right amount of parts onto the Asycube.

  • A fast flow that risks overfilling the Asycube.

Adjust hopper/output parameters

Depending on the Asycube, a hopper is either integrated (Asycube 50 and 80) or not (Asycube 240, 380 and 530).

Asycube 50/80

The Asycube 50 and 80 have an integrated hopper to feed the necessary number of parts onto the platform in order to obtain at each cycle an acceptable number of parts available for picking by a robot.

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Fig. 123 Amplitude and Frequency tuning for Asycube 50/80

  • Amplitude: Amplitude of the signal sent to the actuator and defined as the percentage of the maximum amplitude

    Increasing the amplitude makes the parts jump more.

    Range: 0-100%

  • Frequency: The frequency of the signal sent to the actuator

    Parts react more to certain frequencies depending on factors such as their mass, geometry or rigidity.

    Range: Typically 60-80Hz

Asycube 240/380/530

The Asycube 240, 380 and 530 are equipped with two outputs, generally used to control one or two hoppers to feed the necessary number of parts onto the platform in order to obtain at each cycle an acceptable number of parts available for picking by a robot. You will need to choose which one you want to use (Fig. 124).

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Fig. 124 List of outputs available for Asycube 240/380/530

Important

When you have an Asycube 240 with a purging system, the second output on the Asycube will be needed to operate that system, meaning you will not be able to use it for a hopper.

Tip

It is also possible to use the outputs of the EYE+ Controller with the GPIO cable.

The configuration of the outputs depends on what is actually connected to the outputs. For each recipe, you can choose which output is used and if that output is used in digital (Fig. 125) or analog (Fig. 126) mode.

../../../../_images/hopper_tuning_digital_output.png

Fig. 125 Digital output configuration for Asycube 240/380/530

../../../../_images/hopper_tuning_analog_output.png

Fig. 126 Analog output configuration for Asycube 240/380/530

Tip

For analog mode, you can then choose the intensity in percentage: 100% corresponds to 10 V output.

Adjust Smart feeding settings

The following parameters will be used to parameterize the Smart Feeding in the vibration sequence.

Set the optimal number of parts

To know what is the optimal number of parts, place some parts in the Asycube randomly distributed and stop adding parts when they start to be too close to each other. Count the parts on the Asycube, this is your optimal number of parts.

Input this number n in EYE+ Studio. This number is necessary for smart feeding.

Important

The optimal number of parts parameter will be used as a reference when activating the hopper during production (see Smart Feeding in the vibration sequence)

Set the duration of vibration

The number of parts delivered directly correlates to the duration and amplitude of the hopper vibrations. This must be set by trial and error.

  • First remove all the parts from the Asycube and fill the hopper with parts.

    Important

    The hopper must be filled as it would be in production.

  • Start the hopper vibration by clicking on VIBRATE.

  • Count the parts that fall onto the Asycube. If it is not the optimal number of parts, adapt the duration of vibration and repeat the steps until you get the right amount of parts on the Asycube.

Note

If the time to deliver the optimal number is too long, you may increase the hopper vibration amplitude to increase the speed at which the parts move in the hopper, and then adjust the duration again.

Important

Under standard operation, you will have 4 possible outputs to choose from to plug your hopper into the system. When you have an Asycube 240 with a purging system however, the second output on the Asycube will be needed to operate that system, meaning you will not be able to use it for a hopper. The option will then not be listed as an available output for the hopper. Additionally in this case, any recipe using the output 2 (e.g. imported from another system) will not be valid for production until you select a different output.