1 / 11

Statistical Analysis of CNC Slots

Statistical Analysis of CNC Slots . Confidence Interval Graph representing depth vs length Discussion . CNC Slots. 95% Confidence Interval for CNC Slots. Discussion. Overall the CNC was off by 1.14 thousandths of an inch

neona
Download Presentation

Statistical Analysis of CNC Slots

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Statistical Analysis of CNC Slots • Confidence Interval • Graph representing depth vs length • Discussion

  2. CNC Slots

  3. 95% Confidence Interval for CNC Slots

  4. Discussion • Overall the CNC was off by 1.14 thousandths of an inch • Depths were pretty consistent within our range of 1 to 6 thousandths of an inch • Depths of 6 to 10 thousandths of an inch had greater variation throughout the cut • Possible reasons: • Increased bending force on bit due to cutting more material in one sweep • May need a slower cutting speed on deeper depths

  5. Statistical Analysis of Dremel on Stewart-MacDonald Base • Confidence intervals • Graphs representing depth vs. length of cut • Conclusions

  6. Dremel Cutting a Slot

  7. 95% Confidence Interval on Overall Performance for Dremel Slots

  8. Discussion • Overall Accrupro end mill was closer to the nominal value, but it had greater variations in the depth. • End mill needs to have less variation throughout the cut. • Data suggests that the OSG end mill is more consistent throughout the cut. • Need to work on accuracy • Possible reasons for error: • CNC Slots were not at the correct depth • Depth adjustment was done visually using the CNC slots • Dremel Base nuts became loose through the cut • Inconsistent downward force on Dremel while cutting • Travel speed of Dremel was not adequate • Surface variations on plate could have given inaccurate measurements

  9. Dremel Cutting a ‘S’ line

  10. 95% Confidence Interval on Overall Performance for Dremel ‘S’ Line

  11. Discussion • Overall the OSG end mill was closer to the nominal value and had the less variation in the depth • Need to work on accuracy • Possible reasons for error: • CNC Slots were not at the correct depth • Depth adjustment was done visually using the CNC slots • Dremel Base nuts became loose through the cut • Inconsistent downward force on Dremel while cutting • An additional force is added to the bit to do the curved lines • Travel speed of Dremel was not adequate • Surface variations on plate could have given inaccurate measurements

More Related