- Course Number:
- MCH 120
- Course Title:
- Machine Shop Math
- Credit Hours:
- 2
- Lecture Hours:
- 0
- Lecture/Lab Hours:
- 40
- Lab Hours:
- 0
- Special Fee:
- $12.00

#### Course Description

Covers instruction and practice in working with whole numbers, fractions, decimals, formulas, inch and metric systems, formulas, calculating simple and direct indexing. Introduces how to apply the use of the inch/metric systems, dividing/index head and formulas as they pertain to thread calculations, gear calculations, speed and feed calculations, and taper calculations. Prerequisites: MCH 100. Audit available.#### Addendum to Course Description

__Applying Shop Math__ - Math skills are very important to the machinist in his/her daily work. The machinist must be able to calculate accurately and with reasonable speed. This module will provide instruction and practice in working with whole numbers, fractions, and decimals conversions.

__Shop Math__ - Inch & Metric -In the Machine Shop, accurate workmanship depends on accurate measurements. The metric system of measurement is being adopted by many industries in an effort to be competitive in foreign markets. This module will introduce the student to the principles of the inch and metric systems of measurement.

__Shop Math/Formulas__ - The machinists frequently makes calculations to solve for the unknown value needed to produce a part. A formula tells what values using symbols needs; what computations are necessary to combine those values by using operation signs; and what order to combine them by using grouping signs. In this module the student will learn how to apply the use of formulas as they pertain to Thread Calculations and Taper Calculations.

__Percent, Charts, Graphs & Angles__ - There are times when the print given to the technician does not specifically provide all of the required information to allow the machinist to complete the work piece. At these times, the technician may have to use math procedures to calculate the missing information.To produce a superior product in the manufacturing process, machinists need tools to evaluate quality. Statistical Process Control (SPC) includes Percent, Graphs and Charts which are those tools that help the technician interpret whether the process is in or out of control. This module will introduce the student to the tools of SPC. This module will help the student learn these procedures and calculations.

#### Intended Outcomes for the course

Upon successful completion of this course students will be able to:

- Calculate decimal equivalents of fractions noted on blue prints.
- Convert inch to metric and metric to inch from dimensions on blue prints.
- Apply mathematical formulas as appropriate to thread and taper calculations on shop drawings.

#### Course Activities and Design

MCH 120 will be presented by means of audio-visual presentations, demonstrations, lab experiences, and research activities. The course activities and design emphasize the development of skills and knowledge outcomes prescribed by established industry standards. The identified outcomes will be achieved by means of individual and team activities.

#### Outcome Assessment Strategies

__POLICY__ - Student performance measurements are based on established industry standards. The various areas of study during the course will be evaluated by a variety of activities. Typical of those activities are the following;

1. READING ASSIGNMENTS - Information sheets, textbooks, journal articles and the learning resource center are potential sources of information that the student will reference as directed in the modules identified in the introduction.

2. PRACTICE - Completion of tasks and projects identified in the reading assignments, information sheets, journal articles and textbooks. Students are required to complete practice activities with 100% competency.

3. SELF-ASSESSMENT - Checking and evaluating the students understanding and knowledge gained through the reading assignments and practices typically done through a practice evaluation.

4. LAB ACTIVITIES - Participation in structured laboratory exercises with the emphasis on developing skills or increasing expertise in the areas of study identified in the module packets.

5. FINAL ASSESSMENT - An assessment in the form of a written exam and/or practical application that addresses the subject areas identified in the module packets. Students are required to complete final assessment activities with 85% competency.

__TEXT__:

Machinery's Handbook

Blueprint Reading for the Machine Trades by Pouler

Technology of Machine Tools by Krar, Oswald, and St.Amand

Machine Tool Practices, by Kibbe, Neely, Meyer, and Whit

#### Related Instruction

##### Computation

Hours: 60- Calculate decimal equivalents of fractions noted on blue prints.
- Convert inch to metric and metric to inch from dimensions on blue prints.
- Apply mathematical formulas as appropriate to thread and taper calculations on shop drawings.

- Through direct instruction and practice students use formulas to determine tapers, thread pitch, and depth from shop drawings and blue prints.
- Students perform calculations in metric and English that include conversion of fractions to decimal equivalents, and conversion form metric to English units.