CNC Laser Cutting Machine Services
One of Marshall’s core capabilities is CNC Laser Tube Machining, for medical hypo-tube and other small tube machining applications. Laser tube cutting machines excel in producing intricate features such as holes and slots in thin-walled tubing to produce small surgical instruments and various devices and components with tight tolerances. Marshall has years of experience assisting customers with a host of tubing components and assemblies to match their unique product requirements.
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LASER TUBE MACHINING MATERIALS
Fiber laser tube cutting machines are compatible with a wide variety of materials, including 316 stainless, 17-7 stainless, L605, MP35N (cobalt chrome alloys), copper and brass to name a few. The small wavelength of fiber lasers allows these solutions to create a beam that can easily be absorbed by these reflective materials. Some laser tube cutting tools can even alter their beam’s width to process thinner vs. thicker materials, allowing different-sized materials to be processed on a single machine.
LASER TUBE MACHINING CAPABILITIESMarshall’ laser tube machines can accommodate tube diameters ranging from .5 mm to 8 mm (.020″ to .315″). Maximum wall thickness is approximately .5 mm (.020″) with most materials. At Marshall, our laser tube cutting machines can generally hold tolerances of +/- .013 mm (+/- .0005″).
Supporting Capabilities for CNC Laser Tube MachiningAt Marshall, we’re proud to support our medical customers with innovative manufacturing solutions across every step of their journey. Our team offers a range of additional services to improve quality, create shorter lead times and further reduce costs for our customers.
CNC Laser WeldingMany medical device components that begin their process in our CNC laser tube machining cell proceed to a secondary operation, such as a CNC laser welding process. In the welding process, the laser-cut tube can be assembled to another tube or component. In many cases, CNC laser welding is the preferred method of assembly because no new material is introduced into the process.
At its core, CNC laser welding creates an efficient and reliable method for joining multiple medical device components—including laser-cut tube parts. Together, these CNC-driven processes offer highly accurate and repeatable parts for a wealth of medical applications.
CNC 3D BendingCNC 3D bending of finished laser machining is also a proficiency of Marshall’s. It’s common for us to bend a laser-cut tube component in both 2-dimensional and 3-dimensional configurations – often orienting off of a laser-cut feature – resulting in that feature landing consistently in place within the 3D bend.
Together, our CNC 3D bending and laser tube cutting services provide remarkable flexibility and control for medical customers, producing cost savings, more consistent quality and faster prototypes in the process.
What is Laser Tube Machining?Laser tube cutting is a process in which a laser beam is focused on the outside surface of a metal tube to perform a cutting operation. The tube is fed in various patterns beneath the focused laser beam, where the tube wall is melted through. In medical applications with smaller tube diameters, the laser’s beam width is approximately .10 mm (.004”). Our machines are equipped with fiber lasers.
In the case of most laser machines, the laser is stationary and aimed directly toward the center of the tube. The tube that is being cut is fed through a stationary guide bushing—a “slip-fit” mechanism which stabilizes the tube while keeping it aligned and at a proper distance under the focused laser beam. Behind the guide bushing, the tube is held firmly by a programmable 360-degree indexing collet. This device can rotate the tube and has the ability to simultaneously push and pull the tube axially through the guide bushing. The CNC controller delivers the programmed instructions to these mechanisms, which cut out the desired shapes and configurations from the tube.
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