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CP-6
We can manufacture CP-6 nozzles for special purposes. Examples of such nozzles are: 0.5mm, 0.6m, 0.8mm, 0.9mm, 1.6mm, and extra long nozzles for placing chips alongside tall components. For a price quotation or more information regarding any of our nozzles or services, please call or email us using the information in our "Contact us" page. Notes on CP-6 nozzle accuracy The CP6 nozzle has three critical points of accuracy. Number one is shank diameter. The easiest thing for a manufacturer to do when he does not have the OEM drawings or can not hold extremely close tolerances is to make the shank smaller than the OEM's parts to insure that they will fit in the holder. This creates the problem of nozzle leaning on the CP6 because the nozzle is pushed out from the spring in the center and its forward movement is restrained by the cross pin on the side. The higher the clearance the more the nozzle leans to the cross pin direction. We hold this dimension to plus or minus one micron on the lathe. This tolerance is increased slightly with anodizing and pressing the pin into the shank, but our over all tolerance is one half of the observed tolerance on new Fuji parts and we center our dimension in the middle of the observed tolerance of the OEM parts. All new nozzles are checked in a function gauge (chrome plated class X ring gauge with a slot to clear the cross pin). Number two is concentricity of the tip to the shank. to bring CP6 nozzles into our tolerance we grip the nozzle in Hardinge Special Accuracy collets and spin the assembly in an inspection grade fixture that has no run out when checked with a one micron indicator. With this setup we tweak the needles into a measured .0005 inch (.012mm) total indicated run out. Number three is cross pin to tip length. The reason this is critical is the CP6 machine has a very limited over travel (.3mm). Any warp in the board and tolerance in the height of the parts will take away or add to the compression of the glue or solder. Either of these can lead to parts being skewed. We hold our parts to plus or minus .013mm on this tolerance. This tolerance is less than one half the variation we have seen on new OEM parts. One major after market supplier makes their nozzles from the OEM's length to .1mm extra long with the idea that the customer will get extra wear out of the nozzles, but it is the difference between the longest and shortest nozzle on the machine that is important. See link on monitoring wear to maintain placement accuracy.
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