The latest technologies help match production output to the growing market demand while increasing quality and efficiency.
As demand for Tigercat machines continues to increase, so must the level of manufacturing technology. For these reasons, Tigercat continues to make significant investments in its manufacturing facilities. For some time now, trained welders and fitters have become very difficult to find and the obvious solution was to look to additional state-of-the-art robotic welders. Tigercat’s President, Grant Somerville, views robotic welders as a tool for a highly skilled welder. The robotic welders do the heavy work, for example when it is hot or tedious jobs, and the people doing the parts of the job that require a high skill and experience level as well as special projects and prototype work.
Tigercat has been using robotic welders for many years, so the concept is not new. The manufacturing team has been researching companies that can provide top quality robotic welding equipment and can also assist with customized installations to adapt to the full range of Tigercat’s needs. They found a solution for the skidder facility with Wolf Robotics – a company with a long history of designing and building custom robotic systems for a number of different industries.
The installation consists of two cells, each containing a 1 500 kg (3,300 lb) skyhook positioner with one robotic welding arm and a control system between the two cells. This set-up allows the welding arm to be working on a component on one side, while the operator is positioning a second piece to be welded on the other side. The advantage to this is that when the welding arm has completed the job on one side, it can swing around and start working on the next piece. Once the finished weldment has cooled, it is removed and the next component is positioned to be welded.
The new robot is currently welding skidder arches, grapple boxes and bullnose weldments. This results in a reduction in welding time and increased production capacity. The amount of inventory kept on the floor to keep the line fed is reduced. As the parts are being welded, an employee is fitting up the next piece, so it is ready to go. In addition to speed, the quality of the weld is excellent and consistent. Since the robot self-cleans the welding tip, the clean-up prior to priming and painting is drastically reduced. The skyhook can rotate on all three axes, which allows the trough for the weld to always be horizontal, resulting in a perfectly positioned weld. Currently the robot runs 80 hours per week.
Tigercat has orders placed for several additional units and by the end of 2018 there will be nine more robotic welders working in the various manufacturing facilities and welding a wide variety of machine components. Different configurations are planned – on tracks to weld longer pieces like chassis or booms, larger capacity skyhooks ranging anywhere from 3 000 to 10 000 kg (6,600 – 22,000 lb) and spigot positioners. Tigercat sees the possibility of robotics being used for such things as blasting, For more information, download issue 48 of Tigercat’s Between The Branches publication. Source: ROBOTIC WELDING. Source