Products Robotics & Motion Control Lighter, cheaper and saving energy
Since their launch last year, TM Robotics’ Toshiba Machine THL SCARA robots have proved popular. This is no doubt due in part to their relatively low cost compared with similar performance specifi- cations, but their low mass has been a benefit to system integrators and low energy consumption is a bonus for end users. They are well suited in stand alone applications, but their ease of integration holds great appeal to machine builders and integrators too. The Toshiba Machine THL models satisfy the growing demand for affordable, flexible automation in applications outside of industries such as packaging, materials handling and welding where robots have been installed for decades.
The aim was to achieve low mass and low inertia with the neces- sary rigidity from which high accuracy is attained. Reduction in mass is thanks to the use of lightweight cast aluminium mechanical com- ponents that have a series of ribbed sections to provide rigidity. As a result, smaller servo motors have been fitted. Moreover, because the lightweight system generates substantially less inertia a simplified gearbox has been used.
The THL range is up to 50% lighter than other Toshiba Machine models and the robots consume 50% less electricity. Performance compares favourably with other models and the new robots feature easier maintenance. Available on 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm and 1,000mm arm lengths, there are just three price differen- tials across all models - THL300 and 400 are one price. THL500, 600 and 700 are one price, and the THL800, 900 and 1,000 are one price. Toshiba Machine explains that since the only difference between the robots is the length of the extruded aluminium tube that forms the arm’s main beam, the cost difference is negligible across each of the three groups of robots.
Each robot has four axes of movement including ±360° rota- tional, with a working envelope of ±125° on the first axis and ±145° on axis two. Maximum composite speeds using axes one and two are impressive while cycle times, even with maximum pay- loads, are breathtakingly fast. The allowable moment of inertia is just 0.2kg/m2
bility in X-Y is a mere 0.01mm. TM Robotics
www.tmrobotics.co.uk T: 01707 290 370
and thanks to the use of absolute encoders, repeata- Enter 224
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