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Automated Production Of Oil-Drill Couplings
The good news for shops serving oil and energy companies is that they are busy. The downside to this is they often don’t have time to research and integrate new machining strategies because they are running at full capacity, suggests Gayle Vollmer, Okuma’s director of technical resources.
Take the manufacture of couplings used to join lengths of oil drill-pipes. Coupling machining has traditionally been performed manually, with operators loading workpieces into relatively old equipment. These heavy couplings are difficult for operators handle, and chip control during requisite turning and threading operations can be a challenge. Plus, the couplings’ ID, OD and threads must be accurately machined so that the pipes they connect don’t leak.
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Telefax : +91-22-66991171
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Website : www.smtechnocrats.com |
The Case For Hydrostatic Ways
Few machine tool components are more fundamental than the way system, which provides the interface between moving and stationary elements of the machine. In many machines, the moving elements ride on way systems using rolling elements—that is, way systems with metal-to-metal contact. Hydrostatic ways, by comparison, do not have this contact. In a hydrostatic system, the guideways use a pressurized film of oil, with pockets in the way system distributing the oil to center the moving element. Without the surface-to-surface contact, the slides can operate without wear. Furthermore, because the moving element is suspended by fluid, the impact of vibration is reduced.
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Guhring literature showcases roughing endmills
Guhring’s newest literature on its broad offering of solid carbide roughing endmills is now available. This 12-page brochure includes information on each of the 5 roughing endmill geometries, the sizes available in each of the series; as well as an overview of the features of Guhring roughing endmills.
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Challenges In Cutting CGI
Ongoing development of tough, new workpiece materials is driving cutting tool manufacturers to create appropriate new cutter geometries, carbide grades and coating technologies. Shops serving the aerospace industry, for example, must find effective ways to machine 5553 titanium and composites. The same goes for medical shops being asked to machine PEEK polymer, stainless and other exotic materials. One machining-unfriendly material making inroads in the automotive industry is compacted graphite iron (CGI). This material is primarily used to create engine block, cylinder head and bearing cap castings typically used for large diesel trucks. The result is better fuel efficiency for over-the-road vehicles because CGI weighs half as much as conventional gray cast iron. In addition, it has twice the strength and stiffness of gray cast iron, allowing designers to minimize engine block wall thicknesses. As a result, an assembled CGI engine usually weighs about 9 percent less than one made of gray cast iron.
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Tooling, Torque, Rigidity
In today's ultra-competitive environment, companies must make continuous improvements to win new contrcts while facing cost-down pressure or rising material prices tooling provides a ready-made solution.
However, to enable a tool to cut effectively and take maximum advantage of modern carbides, coatings, insert geometries and edge preparation, it is important that the machine tool and its tooling are compatible.
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Turn, Mill And Laser-Harden In One Setup
A different breed of turn-mill machine was recently introduced at EMO 2007 in Hannover. The UniCen 504 from Monforts combines turning and four-axis milling with integral laser hardening and laser welding in one workpiece setup. The machine platform enables shops to bring often-outsourced laser treatment in-house to reduce lead times, allow better control over secondary laser operations and offer improved flexibility to respond to changing customer needs.
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Remote CNC Access And Operation
Remote Machining melds two seemingly antithetical concepts—control and freedom—so that shops can do some reconnaissance work or tweak parameters on their own terms. The manufacturer’s self-titled, all-hardware interface grants real-time access to all CNC functions via the Internet so that shop personnel can manipulate the process, regardless of their proximity to the actual machine.
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