Modern Machine Shop

DEC 2016

Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.

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152 MMS December 2016 mmsonline.com MODERN EQUIPMENT REVIEW spindle can be swiveled into a vertical position, enabling easy access. Additional options are available for machining oversized drive shafts as long as 850 mm, and the HS-D model, equipped with two spindles, is available for further reduction of cycle times. German Machine Tools of America, call 734-973-7800 or visit gmtamerica.com. LOW-TEMPERATURE FINISHING PROCESS ACHIEVES BREAK-IN LUBRICITY FOR GEAR COMPONENTS Birchwood Technologies' Tru Temp low-temp black oxide process is said to enable gear com- ponent manufacturers to easily achieve break-in lubricity, robust corrosion protection and galling resistance on critical components. This black oxide process meets demanding finishing require- ments while creating a non-dimensional finish, maintaining the same material hardness and load-bearing properties. The blackening line operates at 200°F and forms a satin black magnetite finish that protects critical surfaces in storage, shipment and startup; resists galling; and aids in break-in. The blacken- ing process takes just 30 min., the company says. The finish is Mil Spec- and RoHS-compli- ant, and withstands as much as 120 hr. of neu- tral salt spray or several hundred hours of humid- i t y. T h e f i n i s h p r ov i d e s a 0.5 - m i c r o n -t h i c k crystalline structure that enables it to effectively hold a rust inhibitor and serves as a sacrificial barrier to provide break-in lubricity and galling resistance. Critical parts are protected for stor- age or overseas shipment. The process can reportedly be installed in any plant setting without endangering personnel or surrounding equipment. The operating solutions contain no EPA-regulated chemicals; process rinse waters are normally sent to the sewer as nonhazardous discharge. Most process lines do not require waste treatment equipment. Tru Temp process lines are available in any size to fit part size and production volume. Birchwood Technologies, call 800-328-6156 or visit birchwoodtechnologies.com. TRANSFER MACHINE'S REMOVABLE SPINDLES EASE TOOL PRESETTING Mikron's Multistar transfer machine enables complete machining of small precision parts in large production volumes. The modular system is available in three models: the LX, which can machine on 12 or 24 stations; the CX, featuring 24 monoblock or adjustable stations; and the NX, equipped with 24 CNC stations. The product performs numerous processes including drilling, milling, thread cutting, turning, recessing, deep- hole drilling, burnishing, grinding, edging, chisel- ing, stamping, bending, assembly and measuring. The working spindles can be inser ted into or released from the machining station, enabling tool setting off of the machine. The system locks the turntable in place using two diametrically opposite indexing pins and has a table indexing accuracy of ±2.5 microns. Accord- ing to the company, measurement operations and dimensional corrections are integrated into the machining process, enabling the machine to separate defective parts. The product uses rotating spring chucks to promote transverse machining and to enable concentricit y for turning and plunge cut ting operations. Additionally, the system distributes chuck clamping force on the outer edges of parts to prevent workpieces from becoming deformed. The product machines steel, nonferrous metals or aluminum with diameters ranging from 0.4 to

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