Measurement
Assessing Gage Stability
Gage stability implies different things in different contexts. If taken literally, it may refer to whether there is something loose on the gage, or some other gage problem occurs randomly, to cause two identical trials to produce different results.
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Gaging 'Relational' Dimesions
Specifications often require inspection of dimensional relationships between two features, or between two dimensions on the same feature. Compared to single-dimension specifications (such as diameter), these "relational" specifications can be challenging to inspect.
Read MorePiston Maker Boosts Quality With Special Geometry Software
A leading manufacturer of pistons for high performance engines has improved its manufacturing accuracy and quality control by using a software package developed especially to measure the unusual geometry of pistons.
Read MorePrecision 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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