Robot vision technology packages - LHRobotics.Vision

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Robot vision technology packages - LHRobotics.Vision

Liebherr is making its expertise in the field of industrial robot vision applications available to a wide user group with the LHRobotics.Vision technology packages.

An eye for detail

The technology packages

The technology packages consist of a projector-based vision camera system for optical data collection and software for object identification and selection, collision-free withdrawal of parts, and robot path planning to the stacking point.

Projector-based vision systems with different image field variants for every application

Software

Basic license

The more cost-effective basic license is suitable for customers who only need to roughly set the gripped workpiece down. A stacking plan is not necessarily required for this. Due to the lack of robot model and obstacles, it is also suitable for customers who place less value on collision checking outside the bin, for example in cases where the gripper is never able to fully enter the bin.

The basic license allows a restricted version of LHRobotics.Vision to be run. The following functions are not included in the basic license:

Creation of stacking points and thus path planning for stacking purposes
Addition of obstacles
Addition of a robot model

Professional license

The professional license offers unrestricted use of the LHRobotics.Vision software. This license is particularly suitable for customers who place value on full collision checking of the path from removal to possible stacking

Smart bin-picking software

Design a complex application without any programming knowledge at all? LHRobotics.Vision makes it possible. The intuitive graphical user interface enables quick entry of all necessary information using simple steps, starting with:

Attaching workpieces
Configuration of transport containers

Models can be created directly in the software for simple geometry, or existing CAD data can be imported.

Step by step to the right grip

In order to be able to realistically represent withdrawal of parts including all axis movements in the software, highly detailed grippers are created – even bendable grippers or a 7th or 8th axis can be represented. The interfering contour takes into account the current status of the gripper – open or closed. Again, existing CAD data can be accessed.

When the workpiece and gripper meet, the task is to define suitable picking positions. This can be done by visually positioning the gripper or by precisely defining the coordinates. Degrees of freedom can be tested, and even realistic removal cycles can be simulated with the LHRobotics.Vision Sim plugin. This enables the optimization of the gripper already within the software.

The environment in view

Once parts and grippers have been created, the periphery follows. The robot used is selected from the library to check the work area. Any obstacles can be taken into account:

Input of obstacles present in the robot’s work area
Hand-eye calibration of the system between sensor and robot
Definition of framework conditions for collision-free withdrawal of parts
Path planning

Integrated simulation possibilities with LHRobotics.Vision Sim

If changes are necessary, for example modified or completely new parts are to be gripped, you'll want to test in advance if it works. In our option package LHRobotics.Vision Sim, this possibility is included. As offline programming, i.e. without intervening in the running cell, the feasibility can be tested. The entire process can therefore be tested in the cell and put into operation in advance.

Artificial intelligence lights the way

Artificial intelligence comes into play with the release of software version 3.4. In previous versions, you selected the parameters for part recognition yourself. Now this can now be optimized automatically.

For this feature the operator simply needs to generate a few camera scans and classify their point clouds. Simply, designate where a part is actually located and where it isn't. The software then knows where it needs to search for something – and optimizes the search parameters in multiple loops so that as many workpieces as possible are identified. The system learns more with every “round of calculations” and improves itself – genuinely intelligent.

What if it doesn't fit?

For the cases where other vision systems are desired, we can provide alternatives.

LHRobotics.Vision has an open sensor interface and can also integrate Ensenso, Keyence, Photoneo, Wenglor, Sensopart and many other vision systems, for example.

Liebherr – LHRobotics.Vision – How to implement bin picking in 4 steps

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