Production Machining

SEP 2018

Production Machining - Your access to the precision machining industrial buyer.

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Test Methods This list demonstrates the extensive testing capabilities of AMPI: :: Thermal shock :: Temperature cycling :: Plating adhesion :: Air leakage (to 10,000 psi) :: Durability :: Altitude immersion :: Insulation resistance :: Dielectric withstanding voltage :: Salt spray :: Electrical engagement :: Random vibration :: Shock :: Humidity :: EMI shielding :: Fluid immersion :: Electrolytic erosion :: Lightning strike :: Magnetic permeability :: Hardness :: Millipore cleanliness :: X-ray :: Chemical composition One of the most recent acquisitions is a vison system that does 100-percent checking on some of the compa- ny's automotive parts. It can check as many as 7,200 pieces an hour, looking at dimensions, size, height, lower diameter, upper diameter and radius. Mr. Veneziano says the system provides peace of mind when trying to provide competitive prices with zero-defect parts. "If there's a problem in the field, it comes back to everyone who handled the part. at makes zero-defect vital," he explains. "Machines have so many variables; it's almost impossible to get to zero-defect in production. So, 100-percent part checking in the inspection process is key to meeting the final goal. Now we have a machine that allows us to do that quickly." Based on experience, the company's quality personnel can easily determine what type of inspec- tion a part will need. Sometimes the decision is based on quantity. High-volume jobs may work better with in-process gaging inside the machines. While this equipment is not measuring to the precision of the other systems, in many cases it is sufficient to deter- mine whether a part is good. Mr. Veneziano says the company closely considers quality prior to taking on a job, while many other shops will take a job based solely on machining capabili- ties and then consider the quality requirements later. "When we approach a customer, our first pitch is our measurement capabilities. We need to know, first, if we can measure the part, and then we consider the produc- tion process," he says. He explains that the standard in manufacturing is less than three-percent failure rate, but AMPI targets below one percent, with some customer designs demanding that difficult-to-achieve zero failure. Spreading the Wealth AMPI's capabilities in the production of its connectors are intertwined with other industries that the company serves. It has become quite adept in dealing with tight cleanliness requirements as well and has applied that skill accordingly. Among its metrology investments is a particle-counting microscope that can magnify to 600 times, allowing close examination in critical applications. In the production of some fuel injectors, machining is so accurate that traditional seals are being eliminated and replaced with metal- to-metal seals. In this design, the parts need to meet cleanliness standards that were previously unattainable. e particle-counting microscope allows verification that the parts meet the extreme particle size tolerance. After both solvent and ultrasonic cleaning processes, the parts are run through a Millipore test that involves putting fluid on the part and using a patch to collect the debris. e patch is then placed in an oven to dry out the fluid. e patch is measured and must be below a certain weight, indicating that it did not pick up too much debris. e patch is then examined under the microscope at 400× to see exactly what particles it has picked up. While cleanliness standards were previously associated mostly with automotive applications, other industries are quickly upping their game in this area. Even the aerospace industry has established tighter restrictions relating to foreign object debris (FOD). Materials traceability has also become a significant part of the quality strategy. Applying its experience in the production of precision components, their inspection and measurement, and ensuring that they meet the necessary clean specs allows AMPI to continue its momentum in this range of industries. American Micro Products Inc. | 800-479-2193 | Here's another article on this topic: Making More an Parts for Medical Adding design engineering, test and measurement exper- tise to its contract machining capability, this shop has made itself a highly valued problem solver. LINK :: : American Micro Products Inc. has been a PMPA member since 1996. Micromachining is About Precision :: 43

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