February 2012

EXPERT COLUMNS

EDITOR'S FORUM
allshape AG uses an Ultrasonic 20 5-axis machining center similar to this with Sinumerik 840D CNC for hard and high-speed milling.(click on image to enlarge it)

ARMED TO THE TEETH

In the rapidly changing medical industry, Mike Riley reports how talented entrepreneurs at allshape AG are transforming the dental technician profession from a craft-based profession to one based on CAD programming as dental labs search for more sources to deliver customized and innovative dental implants as quickly as possible to patients.

CNC INSIDER
CNC: IT’S ALL ABOUT NETWORKING.LET ME EXPLAIN . . .

CNC: IT’S ALL ABOUT NETWORKING.
LET ME EXPLAIN . . .

Competitive Edge: Randy Pearson of Siemens Industry explains how machine control can now provide data to every department in the shop, multiple facility companies, even outside partners, to keep everyone “in the know”.

WELDING TIPS
The drop-weight test has become commonplace in the testing of ferritic steel and weld metal used in several types of components in nuclear reactor pressure vessels.(Photo courtesy of Perry Nuclear Power Plant, North Perry, OH)(click on photo to enlarge)

RELEVANCE OF DROP-WEIGHT TESTING IN THE DETERMINATION OF THE REFERENCE NIL-DUCTILITY TEMPERATURE

The drop-weight test has become commonplace in the testing of ferritic steel and weld metal used in several types of components in nuclear reactor pressure vessels. But Regis Geisler of Lincoln Electric questions whether this method is now obsolete and whether there is another predictive tool that should be used to determine the RTNDT of weld deposits.

THE SAFE SIDE
Perhaps the most important project management skill is the ability to effectively manage meetings. This seldom taught but frequently expected safety skill can make the difference between the success and failure of the function. Probably the biggest drain on the safety professional’s day is the disproportionately huge amount of time wasted in unproductive meetings.(Photo courtesy of the U.S. Department of Energy Fermilab test accelerator facility, Batavia, IL)(click on photo to enlarge)

PREPARING FOR AN UNCERTAIN FUTURE:
WHAT TOMORROW’S SAFETY PROFESSIONAL SHOULD BE STUDYING TODAY

In a dynamic business environment, the decisions one makes today can have a profound impact on their safety career tomorrow. Phil La Duke of Rockford Greene explains how simple planning today can greatly improve the chances of a richer and more fulfilled career in safety in the future.

THE CUTTING EDGE
Light gauge steels benefit from using nitrogen as an assist gas instead of oxygen. The use of nitrogen allows the laser to use the full power of the machine, as this process is based on the laser power doing the majority of the work. An increase in power can lead into 50 percent to 60 percent increases in cutting speeds.(click on photo to enlarge it)

MAXIMIZING PARAMETERS IN LASER CUTTING

Increased cutting speed is the answer to increasing productivity, right? Not exactly. Brian Welz of Trumpf revisits some techniques that may actually slow you down to negotiate obstacles faster, reduce the overall process cycle, and increase your productivity.

FINISHING PASS
“The “elevator speech” approach breeds disaster. It undermines and kills sales because it fails to engage customers. In fact, it has just the opposite result: it bores the listener.

WHY “ELEVATOR SPEECHES” DEFEAT SALES

There are few offenses in business worse than challenging the validity of the near sacred “elevator speech,” that one-minute message verbalizing the unique qualities of what a salesperson does or sells. But John Graham of Graham Communications explains why engaging conversation – though more demanding – is much more effective.

METAL FORMING & FABRICATING

The new high definition plasma cutting system uses a HyPerformance® Plasma HPR130XD® that delivers near laser cut quality with minimized operating and maintenance costs.(click on photo to enlarge it)

WHEN OLD BECOMES NEW

Continual upgrades of its cutting operations with JETCAM software and Hypertherm high-definition plasma technology enabled this Canadian job shop GT Metal Products to grow its business, shrink its operating costs and become an aggressive competitor in diverse metal fabrication markets.

Adorned with an eagle head motif and the words Ronald Reagan, the 40 ft long, 10 in thick stainless steel arched wall weighs 8,000 lb (4 tons) and curves inward towards a 9 ft tall bronze sculpture of President Reagan.(click on photo to enlarge it)

AMECO USA Creates Presidential Backdrop for Reagan National Airport

The custom metal fabricator manufactures the crescent-shaped backdrop for the prestigious Ronald Reagan Memorial Statue installation in Washington, DC.

To transport parts between forming stations, the press uses a modular transfer system that consists of autonomous units equipped with their own electronic drives to optimize the transfer motion for two forming stations at one time according to the particular part shape, and separately adjust the press speed and transfer motion so even difficult shapes with inclined forming positions in the die can be produced in continuous operation.(click on photo to enlarge it)

STAMPING OUT A NEW GENERATION OF AUTOMOBILE PARTS

The question Ford and General Motors asked was how to produce hoods and doors with improved productivity, design flexibility and reduced costs. The answer from Schuler, Bosch Rexroth and Morrell was a compact crossbar transfer press that does all that and more.

WELDING

Working with Pulsed MIG equipment enabled the Greenheck shop to eliminate its reliance on .035 in wire for certain applications and transition to 3/64 in (.047 in) aluminum wire. The new programs enabled welders to move to 3/64 in as their single wire diameter because they can now weld down to .050 in material with heavier wire and still eliminate burn-through and blistering. The larger wire diameter provides faster travel speeds, increased fill rates (deposition) and a lower cost per pound.(click on photo to enlarge it)

WHAT YOU SHOULD KNOW ABOUT PULSED MIG WELDING OF ALUMINUM

Three manufacturers share their tales with Mike Vandenberg, Jeff Herb and Chris Roehl of Miller Electric of pulsed MIG welding of aluminum and how new technologies have made the process more viable in their operations by reducing distortion and rework, improving productivity and standardizing wire size.

METAL CUTTING

Cutting fluid is a critical part of the operation because it cools the blade, lubricates the teeth and washes away chips. Cutting fluid needs to be mixed with water, and it has its own special formula when used for sawing versus grinding and general machining. A richer cutting fluid mix should be used on bandsaws to better coat and lubricate the blade throughout the entire cut.(click on photo to enlarge)

BANDSAW BLUNDERS: HOW THEY CUT BLADE LIFE

Ron Saxon and David Rosing of Simonds International reveal the top five sawing mistakes . . . and how to prevent them.

5-axis laser cutting systems use control software to command the laser and the motion together. Integrating these two functions provides a rigid structure, free from vibration. The 5-axis motion consists of 3 linear axes and 2 rotary axes in a unique set-up that allows great flexibility in choosing the best axis configuration for a particular cut that is no longer limited to its position on the part.(click on photo to enlarge it)

SURGICAL PRECISION:
How Advanced Technology Meets the Close Tolerances Needed for Medical Tools

Because the medical manufacturing market is more competitive than ever before, the search is on for new ways to perform more reliable, faster and more cost effective precision cutting of complex medical instruments made of exotic materials. Here is a closer look at how some of the latest developments in advanced technologies from Miyachi Unitek, Haas, and Rego-Fix are meeting these needs.

The team that evaluated the investment in the Toyoda FH1250SX horizontal machining center  included Erik Brown, Rob Bucek, Adam Hunter, Tim Swartz and Benjamin Wood. The FH1250SX system allows the plant to expand its machining envelope from 60 in to 94 in to accommodate larger scale components.(click on photo to enlarge it)

D&S Manufacturing Gets New HMC to Meet Demand

The plant purchases a Toyoda FH1250SX horizontal machining center to expand its machining envelope, reduce part changeover, and reduce overall cost to its customers.

Operator in the Jasper plant installs torque plate on the block before setup in the Sunnen SV-410 machine or CK-21 immediately to the right in photo.(click on photo to enlarge it)

DIAMONDS ARE A BLOCK’S BEST FRIEND FOR HONING

Engine remanufacturer Jasper Engines & Transmissions and engine builder White Performance & Machine are two shops with different needs that illustrate how new diamond honing abrasives technology from Sunnen simplifies the boring process, cuts cycle times as much as half, and improves dyno results.

VMCs without a tool magazine endure extended downtime because operators must load tools through the spindle anytime a tool needs to be changed, updated or maintained. With a tool magazine, spindle downtime is minimized and operators are free to set up the following job for higher efficiency.(click on photo to enlarge it)

FACTORS YOU MUST CONSIDER WHEN PURCHASING A NEW VMC

In a typical production machine shop, the processing capabilities required can vary greatly between applications: some value power and torque over rpm, others value spindle speed more than torque or power. To ensure the highest level of productivity in all cases, William Howard of Makino evaluates all of the factors that manufacturers must consider when making new investments in VMCs.

TOOLING & WORKHOLDING

Machining tubesheet grooves can be a long-reach, tight-quarters job. With the new double grooving tool, tubesheet holes are created to ASME specs in a single step, more than twice as fast. In two-inch thick carbon steel tubesheets, users report 3-to-1 reductions in cycle time vs. single groovers, 30 percent longer tool life, complete elimination of all burrs and much lower tooling costs.(click on photo to enlarge it)

HOW TO INCREASE THE PRODUCTION OF HEAT EXCHANGERS

Without heat exchangers, all process and thermal powergen plants would grind to a standstill. To meet demand, a new milling cutter from Ingersoll Cutting Tools has debottlenecked one of the most time consuming and repetitive operations in shell-and-tube heat exchanger fabrication and reduced tube sheet grooving down to one third the time so that finished units can ship days or even weeks sooner.

Inside your tool drawer, twelve sets of S-pads take up less space, cost less, and will change over faster than solid collets. The S-pads can be shared between the multi-spindles, the CNC spindles and collet blocks for vertical machining centers and are available in round, hexagon and square with smooth or serrated order holes, and special shapes.(click on image to enlarge it)

S-PADS REPLACE COLLETS IN MULTI-SPINDLE SHOPS

S-pads from Hardinge are much faster to change than collets from job-to-job and can be shared between many brands of machines, whether the master collet is mounted directly in a machine spindle (single or multiple), in a collet adaptation chuck, or in a collet block.

Figure 1. T-Slot Blocks are color coded to aid rapid setups. Blue colored blocks for one T-Slot, red colored for two T-Slots, and that can be provided in parallel or perpendicular. The black colored T-Slot block is a blank. Not shown are the green colored blocks that are designed like a strap, providing T-Slots.(click on image to enlarge it)

VERSATILE T-SLOT BLOCKS MAKE MACHINE JOBS FASTER AND EASIER

The versatile color coded T-Slot Block workholding system from from Tau Ceti Co. is modular, so it can also be used as dedicated fixture plates or dedicated setup stations.

To compensate for different types of grooves or pitches in splines and gears, operators simply set the vernier dial up to ±20 deg and the compact system operates without interrupting its neighboring tool stations in a machine turret (click on image to enlarge it)

SLOTTING OR GEAR HOBBING ON ONE MACHINE

Shops no longer have to rough gears on one machine, then transfer them to another for gear hobbing. This compact system from Exsys Tool can now generate splines, spur or helical gears in one operation on a horizontal turning center.

Micro Line 22 mm, 25 mm and 33 mm high speed spindles include back working and right angle models that can achieve spindle speeds up to 90,000 rpm to significantly reduce cycle time and boost productivity.(click on image to enlarge it)

MICRO COLLET SYSTEM FOR MEDICAL MANUFACTURING

This system from IBAG North America delivers accuracies of one micron TIR at the collet nose and handles up to 1/8 in tool diameter to meet the precision milling and ultra small drilling demands of ultra precision parts manufacturing.

Using the ROTA THWplus quick jaw change chuck, a complete jaw set can be changed in less than 60 seconds with a repeatability of less than 0.0005 in, which eliminates the need to re-bore jaws.(click on image to enlarge it)

SHORTER SETUP TIMES WITH QUICK JAW CHANGE CHUCK

With the ROTA THWplus chuck from Schunk a complete jaw set can be changed in less than 60 seconds with a repeatability of less than 0.0005 in, which eliminates the need to re-bore jaws.

MEASUREMENT & INSPECTION

The advent of portable CMM technology has greatly reduced the difficulty of measuring GD&T properties, including the deviation from true position of features. The combination of hardware and software allows the user to take points easily and quickly and the software uses best fit algorithms to give the user accurate, virtually instantaneous, results.(click on photo to enlarge it)

TRUE POSITION MEASUREMENT

Inspection of a bore in an open setup often requires multiple measurement steps and mathematical calculations, but portable CMM technology from FARO can alleviate much of this work by allowing the user to fix the part in one spot, take several points to create an alignment of X- and Y-axes, and measure the bore. Software then determines the position of the bore and its deviation from the called out position.

ENVIRONMENTAL HEALTH & SAFETY

THE ENVIRONMENTAL EVOLUTION OF A METAL STAMPER

THE ENVIRONMENTAL EVOLUTION OF A METAL STAMPER

For Connecticut Spring and Stamping, which manufactures close tolerance precision parts, environmental responsibility has evolved over the last 20 years from something imposed by regulators to a way of life embraced by the company and celebrated as a key differentiator. Now this press shop has positioned itself as a vendor that can meet or exceed all U.S. and European environmental standards, placing it at a distinct competitive advantage.