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Case Studies Collaborative Robots

Feb 05, 2019 — Swiss household device manufacturer V-Zug, was looking for a safe, innovative and cost-efficient automated solution to help its human operatives assemble and test control panels. It found it in the FANUC CR-7iA/L collaborative robot. As part of an automation system, the robot completes tasks such as button and control knob testing more accurately than humans using its sensitive Touchfinger. The benefits are increased efficiency and improved quality.

Identification of the task

To spearhead a new automated future for the company and keep it competitive, V-Zug launched a pilot project designed to improve the assembly and testing of the control panels for electric cookers and other household devices it manufacturers. After the panels are assembled manually and software is installed, the panels must be tested. Up to now, humans have done this. Thanks to their excellent repeatability and sensitive touch capabilities however, FANUC CR-7iA/L collaborative robots were identified as providing a more efficient solution.

Why human-robot collaboration was selected as a solution

Collaborative robots were introduced to improve quality and make processes more efficient. Before their introduction, the workers had to wait for the software download, which took about two minutes, before they could press the keys to test them themselves. All waiting times have now fallen away thanks to the collaborative robots. In addition, process quality has improved because the collaborative robot deals with the sensitive testing using a touch finger with an adjustable, always consistent pressing force, which is not possible for a human. The quality of the test results is now greater as a result.

A FANUC CR-7iA/L collaborative robot tests a control panel on an electric cooker.
A FANUC CR-7iA/L collaborative robot tests a control panel on an electric cooker.

How is it solved (configuration of the workplace and different steps of operation)

To launch the project, Patrick Meyer from V-Zug contacted the Swiss branch of FANUC, among others: “We are familiar with FANUC as a large robot manufacturer, which has been working with collaborative robots for years and offers a special model series.” Besides the requirements for the robot - it should possess process reliability and be easy to maintain - it was important to those making the decision to have a reliable partnership with good, rapid service.

The collaborative robot is actually suitable for direct collaboration with humans.
The collaborative robot is actually suitable for direct collaboration with humans.

A suitable model was found in the CR-7iA/L, a 6-axle robot with a range of 911 mm and 7 kg payload. For the specific project work at V-Zug, FANUC brought along an experienced industrial partner, R. Wick AG from Küssnacht, just a few kilometres away. For more than 15 years, the systems company has focussed on the development of automation solutions for small and medium-sized enterprises, whereby robotics technology plays a fundamental role.

Guido Lüönd, COO of Wick AG, explains: “Our main objective is to develop automation solutions which significantly increase productivity so that our customers also remain competitive in Switzerland as a place of production.”

Evaluation of the solution of the challenge

V-Zug is very satisfied with the procedure and result. Since the “panel testing” project certainly had a pilot character to it, the realisation that collaborative robots are actually suitable for direct collaboration with humans was important. Head of Planning Patrick Meyer says “… for our coming projects we will always consider collaborative robots because entirely new automation solutions are possible with this technology.”

All pictures: © FANUC

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