Measurement
Precision Fabricator Boosts 100 Percent Parts Inspection Program W/ Height Gage
Amherst has been able to attain much faster inspection with the addition of a new and highly versatile Fowler/Sylvac Z-Cal height gage from Fred V. Fowler Co., Inc. One of the key advantages of this gage is its ability to be used both in the inspection laboratory and directly at the lathes, grinders and other milling machines producing the parts, says Michael Kretz, vice president of plant operations.
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When Indicators Go Both Ways
Measuring and gaging are two fairly distinct forms of dimensional inspection. Measuring is a direct-reading process, in which the instrument incorporates a continuous scale of units, against which the part is compared directly.
Read MoreDo-It-Yourself Machine Tool Calibration
The trend toward higher accuracy parts continues largely because manufacturers are finding that higher accuracy parts reduce assembly time and lower warranty costs. The machine tools have to be kept within tolerance, which means calibration at regular intervals.
Read MorePortable CMM Helps Ice The Production Of Refrigeration Units
Carrier uses the Romer portable CMM to simultaneously increase productivity and quality. This CMM has reduced Carrier's total measurement time of a typical frame from eight to ten staff hours down to one hour.
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Scanning For Process Improvements
A coordinate measuring machine with a constant-contact scanning probe makes it possible to get better, more complete information about workpiece features, especially contours. Two shops talk about how this information helps streamline their production processes.
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Look Into My Stylii: Care Of Surface Finish Contacts
Proper care of contact points is one of the basic considerations in gaging. Whether you're using a simple indicator gage or a sophisticated surface finish instrument, much depends on the condition of the sensitive contact point, which is the interface between the gage and the workpiece.
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Winning A Place For The First CMM
Automated inspection plays a key role in this historically non-CNC shop, thanks in large part to the shop's system for efficient CMM setup.
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How Accurate Is Your Machining Center?
Virtually every machine tool builder lists, as part of a machine's specification, accuracy and repeatability figures. What's generally not given is the method used to arrive at the figures. Though these methods are defined in linear positioning standards, not all builders use the same standards.
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Gaging Distance Between Hole Centers
Many of the gaging applications we've considered over the years involve size inspection of a single feature, that is, the diameter of a hole, depth of a groove, height of a gage block, and so on. Many parts, however, contain multiple features that establish dimensional relationships between two or more other parts.
Read MoreAir Gaging For Itty-Bitty Holes
Conventional air gaging for measuring inside diameters is typically limited to a minimum size of about 0. 060 inch/1.
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