Course Descriptions & Syllabi

Course Descriptions & Syllabi

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Areas of Study | | MFRG162 syllabus




COURSE NUMBER: MFRG162
COURSE TITLE:Machining III
DIVISION:Technology
IAI CODE(S): MTM 922
SEMESTER CREDIT HOURS:3
CONTACT HOURS:75
STUDENT ENGAGEMENT HOURS:135
DELIVERY MODE:In-Person

COURSE DESCRIPTION:
This course is an introduction to the mill and surface grinder. Students are taught the fundamentals of shop safety and skills associated with the operation of the engine lathe for metal removal processes.

PREREQUISITES:
MFRG161

NOTES:

STUDENT LEARNING OUTCOMES:
Upon completion of this course, students will be able to:
  • Applying the Machinery’s Handbook: The machinist must be able to reference and apply information found in the handbook to solve application problems. Referencing thread percentage, finish symbols, and allowances are some of the skills required.
  • Basic Mathematics: The exam will assess basic math knowledge of fraction/decimal conversion, addition and subtraction of decimals, and an understanding of percent.
  • Industrial Safety: The machinist must become familiar with Hazmat, MSDS, basic personal protective equipment (PPE), and machine tool safety. Student assessment includes identification of a government body that regulates industrial safety – Occupational Safety and Health Administration (OSHA).
  • Maintenance: Student assessment includes elementary knowledge of referencing and researching maintenance procedures, hand tool maintenance and safety, and simple tool maintenance.
  • Process Adjustment: The exam presents basic problems of machining processes such as tapping, threading, drilling, milling, reaming, and grinding in which a process adjustment functions as the corrective action. Students must identify a basic goal of process improvement.
  • Quality Control Procedures: The exam will evaluate knowledge of basic concepts of SPC and sampling plans. Basic knowledge of inspection plans includes rationale, criteria for choosing the correct measuring instrument, and organization. The evaluation includes basic knowledge of inspection setups and measuring
  • Process Improvement: An important part of any process improvement is an understanding of the symptoms and causes of some common problems associated with drilling operations. Understanding root causes of drill breakage, excessive wear, enlarged diameters and excessive RPM enable the machinist to analyze the process and make the correct improvement.
  • Twist Drill Nomenclature and Sizing: Each twist drill is comprised of many separate features. Identifying the web and understanding web thickness enables machinist to recognize the effects of excessive web thickness. Knowing the purpose and location of the margin facilitates proper drill diameter measurement as well as the effect of worn margin near the point of the drill. All general-purpose drills have the same identical point angle. The included point angle of a drill will vary dependent on the application and the material being machined
  • Safety Practices: Proper safety procedures insure safe and productive machining. Safety includes safe lifting procedures, hair containment, jewelry removal and loose clothing containment. Drill press safety includes the proper location of the vise, storage of the chuck key and chip removal. Safety awareness should be apparent at all times evident through the correct application of speeds and feeds.
  • Countersinking, Counterboring, Spotfacing and Center Drilling: Spotfacing, countersinking and counterboring are drilling procedures used to seat screws and bolts with special head configurations or to seat a fastener or washer evenly on a rough surface. Center drilling is an important procedure for accurate hole location as well as shaft preparation for turning between centers. The specific drilling operations have speeds and feeds that are proportionally slower than drilling with general-purpose twist drills.
  • Layout and Inspection: Choosing the correct measuring instrument is primarily dependent on the tolerance range of the specific dimension. Proper setup and correct measuring procedures for each measuring device is imperative. The machinist must also know when and where to apply semi-precision and precision layout. Selection and application of proper layout tools and setups is essential in any machining operation.
  • Tapping: The drill diameter used to create a hole for internal threading will dictate the thread percentage or amount of engagement between two mating threaded components. Most tap drill charts for conventional thread forms are based on 70% – 75% engagement. Pipe taps used for some pneumatic and fluid connects have tap drills based on other parameters. With the proper equipment, tapping can be performed under power if the drill press is capable of reversing the rotation.
  • Work Holding: The work piece must be held securely to prevent part pullout from the work holding device. The equipment used for work holding parts is dependent upon the shape and size of the part being drilled. Proper location of the vise may prevent the vise from whipping around if the drill gets jammed in the part. Proper selection of work holding devices is imperative for safe and accurate application of a drill press.

TOPICAL OUTLINE:
  • Shop Safety
  • Mills
  • Milling and Squaring
  • Locating and Drilling
  • Counter Boring
  • Channels, Slots and Key Ways
  • Grinders
  • Surface Grinding

    TEXTBOOK / SPECIAL MATERIALS:
    6" pocket rule, safety glasses, shop towels, calculator, note pad, and pencil
    Precision Machining Technology, 2nd edition (ISBN: 9781285444543)

    See bookstore website for current book(s) at https://www.dacc.edu/bookstore

    EVALUATION:
    Shop Assignments
    Attendance, attitude, safety, work ethic
    Final Exam
    80%
    10%
    10%

    BIBLIOGRAPHY:

    STUDENT CONDUCT CODE:
    Membership in the DACC community brings both rights and responsibility. As a student at DACC, you are expected to exhibit conduct compatible with the educational mission of the College. Academic dishonesty, including but not limited to, cheating and plagiarism, is not tolerated. A DACC student is also required to abide by the acceptable use policies of copyright and peer-to-peer file sharing. It is the student’s responsibility to become familiar with and adhere to the Student Code of Conduct as contained in the DACC Student Handbook. The Student Handbook is available in the Information Office in Vermilion Hall and online at: https://www.dacc.edu/student-handbook

    DISABILITY SERVICES:
    Any student who feels s/he may need an accommodation based on the impact of a disability should contact the Testing & Academic Services Center at 217-443-8708 (TTY 217-443-8701) or stop by Cannon Hall Room 103. Please speak with your instructor privately to discuss your specific accommodation needs in this course.

    REVISION:
    Fall 2019

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