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Desemco relies on the flexibility of its five-axis machining centers to accommodate a diverse range of aerospace parts. A five-axis machine with an extra-long table provides the flexibility to handle either one large part in a single setup or several smaller pieces set up on different sections of the twin table cnc machine vector. Desemco uses Vericut software extensively to verify and optimize five-axis CNC programs created by Mastercam.

Mark Albert. Desemco can be best described as a five-axis aerospace job shop that can take projects from initial design to final production. Typical workpieces include longerons, small bulkheads, impellers and window gasket molds.

Five-axis capability is essential to machine many of these parts. Certain geometry, such as complex contours and undercuts, cannot be produced unless the cutting tool or the workpiece can pivot and swivel in simultaneous coordination with the three linear axes of motion.

In other cases, lacking access to five sides of the part would necessitate multiple setups that can drive up machine time and jeopardize accuracy. For this reason, the shop has invested heavily in five-axis machining centers. The KCV features an unusually long table for extended X-axis travel inches. Installed in Junethis machine has the capacity for the larger, longer workpieces that are the trend in aircraft design.

This acquisition was an important strategic marketing move because few job shops have machines of this size. The extra long X axis also enables the shop to set up several smaller jobs on different sections of the table.

This flexibility provides significant tactical value for job scheduling and throughput. The rotary axes are in the spindle head. The rotary axes consist of a revolving table in a trunnion. Installed in Novemberthis machine also has both strategic and tactical value.

In addition to handling the smaller five-axis work that was beginning to crowd the long-table machine, the VP can lock its rotary axes and function as a capable three-axis mill. Unfortunately, acquiring two different configurations of five-axis machines created a hitch in the expected flexibility.

Traditional G-code CNC programs twin table cnc machine vector for the tool-rotation machine could not be used on the new table-rotation machine. When Desemco turned to the local Mastercam reseller who developed the postprocessor for the first OKK machine, he suggested a different approach. In addition to bypassing the problem of incompatible G-code programs, vector programming promised to resolve certain postprocessor difficulties.

With vector input, the complex math normally performed by the postprocessor is handled in the CNC as the part program is twin table cnc machine vector. That means the postprocesser has to function only as a simple translator that applies basic data formatting conventions. Moreover, the same postprocessor can now prepare programs for either of the OKK machines. Any machine-specific rotary axis commands, such as reference return, are processed by macros stored in the individual controls.

This sounded like a great idea, but implementing the concept required a team effort that involved the CAM software reseller, the CNC supplier, the local machine tool dealer, and the technical staff at Desemco. Working together, all of the parties were able to make vector programming a successful reality. In fact, everyone was so pleased with the results that they are now committed to a renewed effort to promote this concept more widely in the industry. They could see that our five-axis capability was more flexible and secure as a result.

That means vector programming capability will be absolutely required for that machine so it fits into our flexible machining strategy. Founded inthe company is owned and managed by Mr. Her business experience includes operating a successful venture in the custom embroidery industry. Salmon has a background in the design and production of jet turbine components for high-end scale aircraft sought by serious hobbyists.

The couple moved to Georgia from South Africa about five years ago, with intentions to reestablish their respective business operations in the United States. Originally expected to be a sideline, the production of jet turbine components took off first.

The Salmons quickly saw the path to full-sized aerospace work as the most promising direction. Almost from the start, five-axis machining capability was integral to that vision. He joined the company in May Initially, he played a key role in helping Desemco gain certification as an aerospace supplier.

The company now has five five-axis machines in addition to numerous other pieces of CNC equipment. Considering that the shop is only a few years past being a start-up, it is clear that Desemco is on the move. Of course, keeping projects and workpieces on twin table cnc machine vector move through all phases of production is critical.

Karen and Grant moved to implement vector programming with their characteristic drive and energy. The technical support they needed from their business partners was readily forthcoming because everyone shared their enthusiasm for the benefits they saw in this project.

It turned out to be a shared learning experience. Collaborating with Mr. Together, they resolved numerous details regarding variable settings for certain machine parameters and motion limits embedded in the logic of the FANUC CNC on each machine. By Januarythe shop had vector programming fully integrated into its operations.

On the rare occasion that a program needs to be edited on the shop floor, he can make changes to the code, rerun the part and return the altered program to the server. Because the same program is usable twin table cnc machine vector either OKK machine, moving work from one to the other does not require help from the programming department. The chief enabling technology for vector programming lies in the CNC, Mr. Dechant says. FANUC has supported vector programming in some format as far back as As more manufacturers adopt five-axis technology and builders introduce new machine designs with varying axis configurations, interest in vector programming as an option is growing, he explains.

All of these functions apply sophisticated software routines to adjust the position and orientation of the cutting tool for smoother, faster machining. Vector programming goes one step further by subsuming the transformations and calculations normally reserved for the postprocessor when preparing part programs for five-axis machining. Typically, five-axis CAM software generates two sets of corresponding geometric coordinates. The X, Y and Z coordinates represent a series of closely-spaced points in 3D space that approximate the travel of the tool tip across the workpiece surface.

The I, J, and K coordinates represent the travel of the opposite end of the tool at a given length. See the box on page One of the roles of the postprocessor in five-axis programming is to relate these vectors to the corresponding pivot points in the actual machine structure.

The location twin table cnc machine vector these points varies according to the dimensions and configuration of the machine. The calculations required for these so-called kinematic transformations can be very complex. This is a reason why developing postprocessors for five-axis machines can be a demanding challenge, and twin table cnc machine vector running these programs consumes time and data processing resources in a programming department. Adding to the challenge is the fact that, to some extent, the accuracy of these calculations depends on establishing precise values for variables in the postprocessor routines.

In the past, the job of the postprocessor was to take the data from the CAM system typically CL Data or a similar format and turn it into code that was usable for a specific machine. In addition to the tool length, diameter, pivot length, part location and any mechanical error in a specific machine, the postprocessor handled all the calculations required twin table cnc machine vector the linear and rotary axis positions.

Vector programming moves certain key functions of the postprocessor to the CNC. Because the input is based on part geometry, not machine geometry, portability is preserved. For his part, Mr. Watson was especially interested in successful vector programming.

Watson recalls. In the event of a military emergency, DoD twin table cnc machine vector worried that a lack of portable CNC programs would severely limit the ability to shift production of critical weapon components from factory to factory.

The proposal called for executing postprocessor routines to be executed in the machine controller—a concept similar vector programming. Watson says. Dechant concurs. Salmon says vector programming has yielded a cascade of benefits of both tactical and strategic value to Desemco. He lists some of the most important benefits to his shop:.

This same postprocessor is expected to suffice for additional five-axis machines equipped with similar controls twin table cnc machine vector the shop may acquire. Updates to this postprocessor will keep all five-axis programming current with the latest technology.

This frees time in the programming department to conduct more thorough verification and optimization before releasing a CNC twin table cnc machine vector to the twin table cnc machine vector floor. Salmon says. Because the simpler twin table cnc machine vector can be tested and debugged thoroughly, consistently better and more predictable machining results can be expected. Likewise, postprocessor functions executed in the CNC do not vary.

Once optimal values and settings are entered at the machine, postprocessing results will always be the same. This has provided a slight but significant improvement twin table cnc machine vector machining time, over and above faster cycle times resulting from program optimization, Mr.

Salmon reports. Customer confidence has grown because jobs awarded to this shop are not dependent on the availability of any one spindle. The flexibility of this machine as a manufacturing resource will be assured. This makes the shop suitable as a back-up or resource to handle overflow work.

For example, Mr. Wakeford anticipates less pressure on his postprocessor development responsibilities. He says that a postprocessor for a CNC with vector programming represents a fraction of the effort required for traditional G-code programming.

Horton sees an opportunity to sell more five-axis machines through the distributorship because vector programming lessens concerns about postprocessor availability and prove- out.

Such concerns often hold buyers twin table cnc machine vector, he says. Dechant says that implementing vector programming at Desemco demonstrates advanced technology that can be carried over to other current users or potential users of FANUC-equipped five-axis machines.

He considers the benefits of vector programming a largely untapped advantage in the marketplace.

See how fast you can make parts on a VF-2SS with a super-fast HRC rotary table. Check out VF machines in action. Take a tour of a great race shop, and see a wide range of VF Series and other Haas machines in action, making parts Table Top Wood Cnc Machine Vector that win! CNC Machine Tools. Sturgis Rd., Oxnard, CA / Toll Free: Phone: Available on "Extreme Duty Series" twin table models, "Super Duty" rapids are 4, ipm and "Panel Pro" rapids are 2, ipm. 4th and 5th Axis Options A fully integrated 4th or 5th axis Onsrud ‘C’-Axis or rotary table creates a supercharged machining center package that boosts your productivity. The Mach III Twin Table Series of CNC routers from Komo Machine, Inc. has been developed specifically for the customer who requires a premier machine with more flexibility, more options and more Z travel than a Fusion Twin www.- g: vector.

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