IMI Norgren Collateral

Hot Metal Gripper case study

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Location: Michigan, USA Customer: Automotive sheet metal stampers Key benefits: Resists heat up to 900°C (1652°F) Case study Requirement With the advent of NHTSA Standard #216 "Roof Crush Resistance" in 2009, automotive stampers found themselves faced with the requirement to produce more hot formed parts in order to increase structural strength while keeping vehicles lightweight. Standard transfer grippers fared poorly with this increased exposure to extreme high temperatures. The customer needed grippers that could operate consistently at 600°C (1112°F). They also wanted sensors that could confirm the grippers were holding a blank and detect double blanks. And they wanted to integrate the new grippers into existing hot forming transfer systems. Solution IMI Precision Engineering used their expertise in tooling, pneumatics and sensor technology to create a gripper package that exceeds customer requirements. The gripper operates at 600°C (1112°F) and even survives temperatures up to 900°C (1652°F). It can be supplied with a sensor on top for part sensing or double blank sensing. The gripper is capable of 450 pounds grip force, the highest force available for any gripper this size. And with all the pneumatics, fittings, airlines and electric cables in a package on the rear of the gripper or in steel tubes and heat sleeves, the system eliminates failure points common to most other hot forming transfer systems. Hot forming gripper meets challenge of extreme operating environments Engineering GREAT Solutions Sector image used under license from Shutterstock.com © Norgren, Inc. 2016

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