iRubric: Lathe Project #_1____ rubric

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Lathe Project #_1____ Lathe Project #_1____ Between centers lathe project turn 1/2 inch and 3/4 diameter machine 3/16 radius and 30 angle Rubric Code: NXX6433 By fknorr Ready to use Public Rubric Subject: Vocational Type: Project Grade Levels: 9-12

Lathe Project #_1.2___
	Advanced 10 pts	Proficient 7 pts	Basic 5 pts	Below Basic (N/A)
Machine end diameter .500	Advanced 20 points for correct diameter .500 +.000-.005	Proficient 15 Points for diameter +.005-.010	Basic 10points for diameter +- .015	Below Basic 5 Points for diameter .020 or smaller
Machine end diameter .750	Advanced 20 points for correct diameter .750 +.000-.005	Proficient 15 Points for diameter +.005-.010	Basic 10 points for diameter +- .015	Below Basic 5 Points for diameter .020 or smaller
Machine 3/16 radius	Advanced 3/16 radius location +-.005	Proficient 3/16 radius location +-.015	Basic 3/16" radius location +-.020	Below Basic 3/16 radius
machine 30 degree angle	Advanced 10 points within tolerance +-1 degree proper length	Proficient 7 Points for within +-2 degrees length +- .010	Basic 5 points for within +-3 degrees length +-.015	Below Basic 0 points for wrong angle
Set-up of lathe is done correctly.	Advanced 10 points for setting up entirely alone. proper RPM and feed rate tool height rigid set-up	Proficient 7 points possible for having teacher visit the station 2 times or less	Basic 5 points total for having teacher help 3 times or more set-up	Below Basic 0 Points if teacher helped through whole process
Part is free of sharp edges	Advanced 10 points deburred and proper surface finish 125ST	Proficient 5 points for surface finish 250ST	Basic	Below Basic 0 points if not deburred and surface finish unacceptable
End length .500	Advanced 10 points for proper length 1.500 +/- .005	Proficient +/- .015	Basic +/- .020	Below Basic +/- .03 or more
End length .750	Advanced 10 points for proper length 2.500 +/- .005	Proficient +/- .015	Basic +/- .020	Below Basic +/- .03 or more