Stephanie (Monsanty) Hendrixson served as a Modern Machine Shop summer intern in 2012 and joined the team as an assistant editor later that fall. She currently works on event news for MMS Online and on the production of the print magazine. She also blogs about additive technology and helps to manage Additive Manufacturing magazine as its associate editor. Stephanie holds an M.A. in professional writing from the University of Cincinnati and a B.A. in English literature and history from the University of Mount Union.
Each month Modern Machine Shop focuses on a specific type or category of manufacturing equipment in the Modern Equipment Review Spotlight section. The March 2015 issue highlights machining centers ranging from compact five-axis VMCs to large HMCs designed to accommodate aerospace parts. Click the photo above for a slideshow featuring these machines and more, and check the print or digital edition of the magazine for the equipment spotlight in each issue.
High-pressure coolant operating at 1,000 psi and higher can significantly reduce tool wear, enable higher cutting speeds and provide other benefits for manufacturers working with tough materials. However, using the wrong coolant in a high-pressure system can cause foaming and hinder potential gains, as LB Pipe & Coupling (Mongolia, Texas) discovered.
LB Pipe began experiencing foaming problems during the initial startup of a new robot-tended cell, halting production before it had even started. After trying a number of modifications to the coolant lines, pump, tank, tooling and nozzle configurations, the ultimate solution turned out to be the simplest: change the coolant. Read the full story here.
Grinding has an incredible range of uses in the machine shop—from roughing out a geometry to finishing workpieces with tight tolerances to threading parts to machining cutting tools. The selection of equipment featured in February’s Modern Equipment Review Spotlight slideshow reflects that variety of applications. Click on the image above for a slideshow of grinding equipment ranging from grinding wheels and abrasives to complete grinding systems equipped with automation and metrology capabilities.
Houstex organizers refer to Houston as the “energy capital of the U.S.,” and with oil and gas production in the United States on the rise, the city’s manufacturing sector has been going strong. Taking place February 24-26 at the George R. Brown Convention Center, Houstex 2015 has a special focus on oil and gas, petroleum, and related industries—but fabricating, medical and aerospace manufacturing, among others, will also be well-represented. Special events scheduled during the show include a Student Summit, additive manufacturing presentations, and talks on search marketing, energy industry outlook, and more. The trade show is produced by SME.
Register for the show here, and click the image above to view a slideshow previewing a selection of the products you’ll see on the show floor.
In the same way that a computed tomography (CT) scanner at a hospital enables healthcare providers to “see” inside a patient, industrial CT scanning technology makes it possible to nondestructively measure and inspect the inside of a workpiece. The method works by passing an object (patient or part) between an X-ray-emitting tube and a sensor, generating a point cloud that is then interpreted with software to create 2D images or 3D models. A medical CT scanner rotates the X-ray emitter around the patient, whereas in industrial applications it’s typically the workpiece that moves, rotating slowly on a manipulator table while the sensor records data at set intervals. (For a brief overview of how the technology works, see this video on how a moldmaking firm uses CT scans.)
But apart from the different configurations of the CT scanner itself, scanning a metal part and obtaining precise measurements requires different capabilities than scanning a human patient. Metal parts have a greater tendency to absorb the X-rays, a characteristic which can introduce artifacts and affect the resolution of the generated image, especially when scanning denser workpieces. To maintain resolution on dense parts, industrial CT scanning systems must operate at higher kV power than medical scanners. GE’s Phoenix VTomeX M scanner, for example, is equipped with a 300-kV microfocus X-ray tube and a temperature-stabilized detector array. (A medical CT scan is typically conducted in the neighborhood of 70 to 140 kV.) The company says that these features enable the system to scan faster and achieve scanning accuracy down to 2 microns on parts ranging to 500 mm in diameter, 600 mm in height and weighing as much as 50 kg (110 lbs).
This ability to scan dense parts more quickly was a key draw for Exact Metrology, which recently installed a Phoenix VTomeX M CT scanner at its main facility in Cincinnati, Ohio. Using the Phoenix scanner, the company says it is able to generate a first article inspection report—including internal dimensions—in less than an hour, faster than using a tactile or optical CMM. Exact, which provides 3D scanning services in addition to metrology equipment, plans to use the CT scanner to offer process control as well as customer R&D services. Possible applications may include light metal castings, electronic assemblies, thermoplastic molded and composite parts, in addition to various machined metals.