Chabot College November 1999 Replaced Fall 2010 Course Outline for Machine Tool Technology 71A NUMERICAL CONTROL PROGRAMMING I Catalog Description: 71A – Numerical Control Programming I (May be repeated 3 times) 4 units Introduction to programming and operating three axis computer numerical controlled drilling and milling machines. Instruction includes the standard X-Y-Z Cartesian coordinate system, manual and automatic milling machine operation, absolute and incremental positioning, tape coding and preparation, and fabrication of basic and intermediate three axis drill and mill parts. Prerequisite: Computer Science 8 or Computer Application Systems 8. Strongly recommended: Industrial Technology 74 (may be taken concurrently). 2 hours lecture, 6 hours laboratory. [Typical contact hours: lecture 35, laboratory 105] Prerequisite Skills: Before entering the course the student should be able to: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. identify various parts of a computer system and what each does; identify major software applications packages and what they do; know how to use common features of windows and the desktop; know how to organize files and folders using Windows Explorer; be familiar with features common to Windows Software; know what the internet is, what a browser is, and be able to navigate the internet; know what the World Wide Web is and how to use search engines; know how to send, receive, and manage electronic mail; identify ethical and security issues; demonstrate significant digits and their relationship to measurements; use a calculator to perform arithmetic operations involving measurements; perform numerical evaluation of formulas and solve simple linear equations; demonstrate the concept of ratio and solve proportions; demonstrate numerical trigonometry, polar coordinates, and perform elementary calculations; perform conversions between English and Metric measurements; calculate volumes and areas. Expected Outcomes for Students: Upon completion of the course, the student should be able to: 1. 2. 3. 4. 5. demonstrate the basic concepts of the Cartesian coordinate system; compare cutter location coordinates using basic trig functions; prepare basic three axis numerical control programs; use computer software to prepare N/C machine control tapes; set up and run basic three axis computer numerical control drill and mill programs. Course Content 1. 2. 3. 4. 5. Introduction to numerical control machine tools Cartesian coordinates Absolute and incremental positioning Program format, codes, and style Canned cycles Chabot College Course Outline for Machine Tool Technology 71A, Page 2 November 1999 6. 7. 8. 9. 10. 11. Polar coordinate programming Simple looping operations Basic subroutine programming Contour milling Cutter compensation Manual data input (M.D.I.) operation Methods of Presentation: 1. 2. 3. 4. 5. Lecturing Machine demonstrations Video aids Visual aids Production of programs and parts Assignments and Methods of Evaluating Student Progress: 1. 2. 3. 4. 5. Homework assignments – read specified section and answer questions Laboratory Projects – follow established procedure and program and machine assigned parts Exams Short quizzes Attendance Textbook(s) (Typical): Bridgeport Programmers/Operators Manual, Bridgeport Machine Tool Company Fadal Programmers/Operators Manual, Fadal Machine Tool Company Computer Numerical Control from Programming to Networking, Lin, Jonathan S.C., Delmar Publishing Company, 1994 Special Student Materials: 1. 2. 3. 4. 5. 6. 7. 8. Scientific calculator Plastic circle template One 45 degree and one 30-60 degree plastic triangle One 6 inch scale Protractor Compass PC formatted diskette Safety glasses mc 12/8/99 COMT71A