AFMETCAL Newsletter - Wright-Patterson Air Force Base

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Page 32<strong>AFMETCAL</strong> NEWSLETTERApril 2011Volume 31, Issue No. 3From The Bench (continued)(Continued from page 33)Optimar 100 Analog Test Indicator (continued)The above pictures illustrates a properly mounted TestIndicator on the Optimar 100 using the appropriateadaptors, special anvil and attachments.Click OK to exit the Measuring Station menuscreen. Note: to avoid a popup error menu, approachthe test point starting from a clockwise direction(for cw dial indicators) and the dial indicator’sneedle must travel greater than the number of divisionset in the Positioning Path menu box. Refer tosection A.9, Test tab.5 CAUTION: When mountingthe Test Indicator, alwayshold the test piece when looseningthe clamping lever (17)for the setting position of thetest piece.Failure to hold the test piece will result in the testpiece colliding with the anvil causing damage toboth the Optimar 100 and the Test Piece.Mount the Test Indicator using the appropriate reducingsleeve, adaptors and/or attachments.Note: The Test Indicator’s stylus must be set to themeasuring surface per the manufacturer’s recommendangle. Failure to set the recommended stylus angle tothe measuring surface will result in cosine error.Adjust the clamping lever (17) to manually set theTest Indicator’s stylus as close as possible to the anvil,rough adjustment.7 Preloading of the Test Piece will be outlined in thefollowing steps listed below:a. Rotate the Test Instrument’sbezel and align the zero to theindicating needle.NOTE: The indicating needle isat the “mechanical restposition”.Refer to the picture at right.b. Next, rotate the Test Instrument’sbezel 180 degrees plusthe preloaded divisions perTO 33K6-4-889-1.Refer to the picture on the right.(Continued on page 35)
Page 33<strong>AFMETCAL</strong> NEWSLETTERApril 2011Volume 31, Issue No. 3From The Bench (continued)Optimar 100 Analog Test Indicator (continued)(Continued from page 34)c. Set the dial indicator's needle to zero by rotatingthe Optimar 100's rotary knob (15) in a clockwisedirection, fine adjustment. Refer to the picturesbelow.This will be the initial zero reference position forthe dial indicator and the Optimar’s anvil.6 On the Measure screen menu, click the right arrowmenu button to record the initial zero referencedata.The test measurement will bedivided in two sections.Measurement A checks the TestIndicator in one direction andMeasurement B in the oppositedirection.NOTE: The green arrow in the Measure menuscreen indicates whether you rotate the Optimar 100’srotary knob clockwise or counter clockwise.Up arrow for clockwise direction. Down arrowfor counter clockwise direction.The next increment test point will be displayed inthe Next testing position menu.needle in a counter clockwise direction and positionthe indicating needle a couple of divisions before thetest point.This test point will be the negative portion of the TestInstrument’s total range.Rotate the rotary knob (15) to place the indicating needleon the test point. Note the rotation by the positionof the green arrow in the Measure menu screen.Click the right arrow menu button to record thedata and position the anvil to the next test point for theremainder of the calibration.Refer to the Next testing position menu box locatedin the Measure in Direction A menu screen to view thenext test point.To repeat a test point, click the left arrowbutton.menu7 After completion of the linearity and hysteresisverification test, the user can omit the repeatability testsince this is not a calibration function per the TO33K6-4-889-1.Click Cancel to bypass the repeatability test and continueto Measurement B.8 Upon completion of the Measurement A, rotate theOptimar 100’s rotary dial in a counter clockwise directionto continue the calibration for Measurement B.After the right arrow menu button is clicked,the Optimar’s software will slew the Test Indicator'sContinue to rotate the rotary dial until the upper portionof the special anvil attachment makes contact withthe Test Instrument’s stylus.(Continued on page 36)
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