There’s More to It Than You May Think Introduction Calibration labs frequently need to certify the average roughness (Ra) of calibration specimens or samples. This seemingly straightforward task, however, involves more than running a roughness gage across the surface and reading the Ra value. Variations in basic settings can result in Ra values that differ…
Machinists working strictly in metal-working shops do not have many occasions to gage the thickness of soft materials. But many of our readers work in supporting roles, helping to build or maintain the machines that produce textiles, plastic films, paper and other products that are compressible. Even readers who work only with metals should realize…
COLD ROOT ROLLING is the process of burnishing the root radius of a previously cut thread, in a Rotary Shouldered Connection. READ MORE ABOUT COLD ROOT ROLLING
WITH MASTER RINGS AND ENGAGEMENTS, SIZE MATTERS A master ring, or ring gage, is basically a bore of known dimension. The precision hole is often used as a setting master for variable inside-diameter gages (such as bore gages, air tooling and mechanical plug gages), for go/no-go mastering of fixed ID gages, and for go/no-go OD…
As a welding consumable manufacturer, Postle Industries take our responsibility in supporting our customers supply chain and compliance departments seriously. The most common documents required form us are a certificate of conformance (COC), and a Safety Data Sheet (SDS – formally known as an MSDS). The COC is a certificate of authenticity and quality, related…
Upgrade your machining game with our precision-engineered ballnose end mills designed for unmatched stability and performance. With our unique rigid-lock technology, experience superior tool rigidity and reduced vibration for cleaner cuts and longer tool life. Precision ground Single insert design allows for optimal finish and reduced runout compared to other systems Flat-bottom and Back-draft styles…
After all that has been written about Statistical Process Control (SPC) over the years, I am continually surprised at how often shop owners tell me they would like to do Data Collection for SPC, but they’re “just too small,” or they “can’t afford all that fancy equipment.” There seems to be a mistaken perception out…
Digital Video Comparator Digital video comparators utilize CAD drawings for accurate comparisons, incorporating laser measurement tools and specialized comparison software. The vision system is linked to a computer, which is used to calibrate and adjust the video comparator’s settings for precise measurements. Light Source The workpiece is positioned on a glass plate with a light…