GF AgieCharmilles, Lincolnshire, IL, introduces its new high-speed MIKRON HSM 200U LP milling machine. Available in 3- and 5-axis versions, the MIKRON HSM 200U LP (linear performance) brings speed, efficiency, and precision to the machining of small, highly complex components, such as medical implants and electrodes. The machine accommodates the medical industry’s increased need for lean manufacturing via small-footprint, high-speed machines that bring accuracy and supreme surface finishes to small parts production. It can produce work pieces via true 5-axis simultaneous high speed machining. Linear motor technology in the main machine axes and optimized direct-drive motors for the B and C axes result in high precision and surface finishes as fine as Ra 0.05 μm. Furthermore, the machine’s powerful 50,000-rpm, 11.4-hp Step-Tec spindle also provides excellent surface finish and part detail.

To counteract the high levels of heat that can develop, the unit employs a sophisticated thermal management system. Each of the linear axes features a cooling unit to draw heat out of the machine, creating geometric stability and high repeatability of movement guidance.

A Heidenhain iTNC 530 control system and smart machining modules provide advanced levels of monitoring critical to the production of high value precision medical parts. The system allows the machine to automatically check and evaluate tools and work pieces, inspect tools for breakage, and perform measurements of the work piece. Additionally, smart machine modules automatically monitor spindle vibration, calibrate machine geometry, and transmit process status messages to an operator’s cell phone.

To avoid inconsistent loading of small tools and 3D geometry errors due to the inaccurate measurement of those tools, the machine features Intelligent Tool Measurement to record the complete tool tip up to a diameter of 0.47" on image sensors. Special software cleans and measures the recorded tool geometry for repeatability in the micrometer range.

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This article first appeared in the April, 2013 issue of Medical Design Briefs Magazine.

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