1. Straightness “shooting it to you straight”

3. HEY!!! WAKE UP!

4. It’s time to play my second Favorite Game!!!

5. S H I P NO SHIP

6. (Crash or No Crash is my favorite!)

7. The Print:

9. S H I P NO SHIP

11. S H I P NO SHIP

13. S H I P NO SHIP

14. The Print:

16. S H I P NO SHIP

18. S H I P NO SHIP

20. S H I P NO SHIP

21. Did you catch the difference?

28. Straightness of a Surface Indicates each longitudinal element of the surface must lie within two parallel lines 0.5 “left to right” and 0.1 “front to back”

29. Straightness per Unit Length

30. What’s the recommended way to measure straightness?

31. Wouldn’t it be nice if there was a book that told us Zeiss’ recommended way to measure everything?

35. Visit www.zeissmetrology.com Item 626119-0040-002

38. What’s the recommended way to measure straightness of a line in Calypso?

39. Straightness Tolerance Less Than 0.02mm Max Scanning Speed = 3mm/s Scanning Step Width = 0.10 mm Recommended Stylus Diameter = 3mm Filter Cutoff Wavelength = 0.8mm Outlier = +/- 3 Sigma, 5 adjacent points * Scanning speed and other settings may vary due to sensor type and form deviation. Always check results for plausibility!

40. Straightness Tolerance Greater Than 0.02mm Max Scanning Speed = 10mm/s Scanning Step Width = 0.31 mm Recommended Stylus Diameter = 3mm Filter Cutoff Wavelength = 2.5mm Outlier = +/- 3 Sigma, 5 adjacent points * Scanning speed and other settings may vary due to sensor type and form deviation. Always check results for plausibility!

43. What’s the recommended way to measure straightness of a shaft or bore’s surface in Calypso?

44. 1.Measure the Cylinder 2.Copy/Paste the Cylinder 3.Open the second Cylinder 4.Go to NOMINAL DEFINITION>RECALL ONE FEATURE and choose the first Cylinder (to make sure the lines scan exactly down the axis of the first Cylinder… otherwise, you will need to make alignments based off the cylinder and scan separate lines) 5.Go to NOMINAL DEFINITION>OPTIONS 6.Go to STRATEGY 7.Set up FOUR LINEAR scans, with SPEED and STEP WIDTH just like previously recommended for line straightness. 8.Drop in a 2-D Line Feature, RECALL FEATURE POINTS from the cylinder, right-click OPEN and choose a line scan path. 9.Repeat step 8 for the other three lines. 10.Evaluate straightness as previously recommended.

47. What’s the recommended way to measure straightness of a shaft’s axis?

48. 1.Measure the Cylinder 2.Set up AT LEAST FIVE circular scan paths down the cylinder’s length. 3.Drop in a new Circle Feature, RECALL FEATURE POINTS from the cylinder, right-click OPEN and choose a circle scan path. 4.Repeat Step 3 for the other circle paths. 5.Drop in a 3-D Line Feature. 6.In the 3-D Line, choose RECALL and select all the circles made from Step 3. 7.Evaluate Straightness of the 3-D Line. No filtering required.

49. What’s the recommended way to measure straightness of a surface?

50. Measure AT LEAST FOUR lines evenly spaced down the depth of the plane as indicated by the view of the print’s Straightness callout. Follow the guidelines for step width, scanning speed, filtering, etc. for measuring Straightness of a Line.

51. How do you report Straightness per Unit Length?

52. Scan a line as prescribed. Report a “Straightness Ref” characteristic Edit the PARAMETERS of the “Straightness Ref” characteristic to match the defined reference length on the print. “Overlap” the evaluation lengths by at least 25%.

54. “Straightness Ref” result

55. How do you report Straightness per Unit Length of a shaft axis?

56. Follow the procedure for measuring the straightness of a shaft, measuring a cylinder with a series of circle scan paths. EXCEPT, YOU NEED A THREE CIRCLES PER EVALUATION LENGTH. Construct a series of lines out of three circles at a time down the length of the cylinder’s axis. Report straightness of each of the lines Finally, use SIZE>MORE>MAXIMUM RESULT to report the worst straightness of the series of lines. That’s the answer.

57. There’s an automatic way to do this repetitive process, but I only give it out to “Power Users”. Come to our “Power User” class to learn this trick as well as lots of other fancy programming tricks. Shameless Plug…

58. Straightness “shooting it to you straight” Questions?