Manufacturing Services 2018-04-26T00:32:32+00:00

Metrology / Quality Inspection Lab

Metrology is the science of measurement. It is how we ensure that we can confidently compare the results of measurements made all over the world.

Powerful Analysis Performance in a Compact Form

  • High rotational accuracy (0.03+6H/1000)[Symbol]m is maintained for an entry-level to mid-range model 
  • PC-based cylindricity capable Roundtest for both shop floor and laboratory environment 
  • Simple easy to use center and level function with mechanical mic heads on the alignment table 
  • Accidental touch function disables the movement when the detector goes over range 

 

This machine is used to measure Cylindrical/Round machined parts. Most commonly this machine is used in the transportation industry to check cylindricity of drive shafts and axels. The part or section of a part is placed on the stand, and then the computer system begins to rotate the stand. The probe then makes contact with the part while it’s rotating and physically traces the roundness. The roundness is then displayed on the computer and graphed to show if a part is good, or if it is not, it shows which areas are out of tolerance. 

This piece of equipment tests the Hardness of different materials, by using the Indention Hardness Testing method. This means that the material’s hardness is tested by applying a predetermined load (weight) amount through an indenter. The hardness of the material is measured by how big/small of an indention is left on the material after the test. Typically, the smaller the indention the harder the material, and the larger the indention the softer of material; this is because the indenter is able to move through soft materials more easily thus leaving a larger indention. 

On most part drawings there is a hardness “call-out” which means the material has to be a certain hardness to function properly as a finished product. For example, car engine blocks have a certain hardness “call-out” and if the material does not meet these specifications then the engine will be scrapped. To the everyday consumer it may seem like a waste to throw away a seemingly “good” engine block, but due to the extreme pressure that is exerted on the engine block while it’s running, it is essential that the materials meet the hardness specifications. 

 FEATURES: 

  • An erect image on high brightness screen 
  • 14” (353mm) dia. Protractor screen with crosshairs and staggered lines for easy alignment 
  • Digital angle measurement of 1’ or 0.01° with built-in angle counter 
  • Floating-type work stage incorporates linear scales for fast, accurate measurement 
  • Halogen contour illumination 
  • Fiber-optic illumination cables and halogen included 
  • Suitable for thread pitch measurements – free from blurred or distorted images when the workpiece is angles 
  • A wide range of accessories for varied applications 

The profile projector/optical comparator is used to measure the “profile” dimensions of a finished piece/product; usually, these pieces are no larger than a softball. The part/piece of a part is placed on the stage in front of the light, and the light projects around the object. The objects shadow is reflected and magnified onto the display screen for measurement. There are two types of measurements that can be used with this machine, the use of overlays, or the use of the x/y travel on that stage.  Overlays are most typically used when there are many of the same parts that need to be inspected, such as bolt/screw threads. Companies specialize in making overlays by using your part drawing and magnifying it to your specific magnification requirements (usually 10X) for your profile projector and then printing it on a transparent circular piece of plastic. The operator can then uses the specific overlay that is created for their part and quickly check if the item is an intolerance or out of tolerance. The other method of measurement is using the x/y stage travel to measure critical dimensions. This is a more timely process but is also very accurate. The operator can manually check Radius’, Angle’s, Circumferences, Line length, Hole diameters and much more.  

Mitutoyo LH-600E

The Mitutoyo LH-600E is the second most versatile piece of equipment right behind the Mitutoyo CMM. This piece of equipment is able to check many critical dimensions on a finished product or piece of material that has just been machined. Below is a picture of an example part, and just some of the measurements that can be taken with the Height Gage:

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SV-3200H4/0.75MN Inch
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This piece of equipment has two functions, to check the contour of a finished product and to check the surface finish of a finished product with two interchangeable heads. The contour of a finished product is checked by the larger head (Contracer) that is pictured on the actual stand above. This piece of equipment drags a probe point along the surface of an object and traces the contour. The contour is then displayed on the computer which shows the actual dimensions of the contour. This is used for finished products that have very specific contour “call-outs” on the drawing that cannot typically be measured on a CMM (Example – Rubber gaskets). The other head that comes with this machine is the SurfTest which tests the surface finish of a finished product. As with the hardness tester, most finished products have a “call-out” for surface finish, which basically means how smooth the surface is. The SurfTest measures this finish running its skid over the finished product. This skid is highly accurate and picks up the most minor variations in the surfaces finish. These variations are then displayed on the computer, the smaller the variations the smoother the finish, while the larger variations mean a more rough surface. The SurfTest is typically used on finished products that we require an extremely smooth surface such as razor blades, medical components and piston heads for a car.

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This piece of equipment is by far the most versatile measurement device in existence. The Crysta Apex S holds an accuracy of 1.7 microns, which is an extremely small value, as pictured below it is a fraction of the size of a human hair: