Standard |
MCH 115 - Mill Operations I
Provides instruction in the setup and use of the milling machine. Topics include: milling machines, milling machine calculations, milling machine setup, milling machine operations, and safety.
|
Competency Areas |
Hours
|
|
|
|
Milling Machines |
Class |
2 |
|
|
Milling Machine Calculations |
D. Lab |
8 |
|
|
Milling Machine Setup |
P. Lab/O.B.I. |
0 |
|
|
Milling Machine Operations |
Credit |
6 |
|
|
Safety |
|
|
|
|
|
|
|
|
|
Prerequisite: |
Provisional admission |
||
|
Corequisite: |
|
||
Course Guide |
|
Competency |
After completing this
section, the student will: |
Hours |
||
|
Class |
D.Lab |
P.Lab/
O.B.I. |
||
|
MILLING MACHINES |
|
|
|
|
|
Milling machine parts |
Explain each part of the mill and what the part is designed to do. |
|
|
|
|
|
Locate the controls for feed and speed regulation, direction of the feed, and direction of the rotation of the cutter. |
|
|
|
|
|
|
|
|
|
|
Vertical milling machine maintenance |
Perform basic vertical milling machine maintenance and lubrication. |
|
|
|
|
Blueprint reading |
Interpret blueprints for material type, size, location of features, cutter type and size. |
|
|
|
|
MILLING MACHINE CALCULATIONS |
|
|
|
|
|
Speeds and feeds |
Use charts to determine feeds and speeds. |
|
|
|
|
|
Calculate and set speeds, feeds, and depth of cut for vertical mill. |
|
|
|
|
Tooling requirements |
Select the type of holding device or hold down system according to the workpiece shape and size. |
|
|
|
|
|
Describe each type of cutting tool or cutting assembly used on vertical mill. |
|
|
|
|
|
Set up workpiece to cut angles to +/- 1 minute of specified angles. |
|
|
|
|
|
Find the center of workpiece using the tool cutter and the "X" or "Y" feed dial. |
|
|
|
|
|
Locate points using an edge finder. |
|
|
|
|
|
Locate the center of holes using a wiggler. |
|
|
|
|
|
Locate points using arcs and angles. |
|
|
|
|
MILLING MACHINE SETUP |
|
|
|
|
|
Planning |
Plan sequence of vertical milling operations. |
|
|
|
|
Alignment |
Align the vertical milling machine head. |
|
|
|
|
|
Align workpiece, work holding devices, jigs, and fixtures on vertical mill. |
|
|
|
|
Preparation |
Change tool holders and cutters on vertical mill. |
|
|
|
|
|
Set up and use jigs and fixtures on vertical mill. |
|
|
|
|
|
Set up vertical milling machine for manual operation. |
|
|
|
|
MILLING MACHINE OPERATIONS |
|
|
|
|
|
Dimensional control |
Hold dimensions using table and precision stops on vertical mill. |
|
|
|
|
|
Hold dimensions using digital readout on vertical mill. |
|
|
|
|
Applications |
Machine parts using end milling cutters on vertical mill. |
|
|
|
|
|
Machine parts using conventional and climb milling on vertical mill. |
|
|
|
|
|
Machine parts square on vertical mill. |
|
|
|
|
|
Machine closed pockets on vertical mill. |
|
|
|
|
|
Machine angles on vertical mill. |
|
|
|
|
|
Machine keyseats on vertical mill. |
|
|
|
|
|
Machine T-slots on vertical mill. |
|
|
|
|
|
Center drill, drill, and ream holes on vertical mill. |
|
|
|
|
|
Tap holes on vertical mill. |
|
|
|
|
|
Mill radii using rotary table. |
|
|
|
|
|
Mill angles using rotary table. |
|
|
|
|
|
Identify milling problems, determine causes, and correct problems. |
|
|
|
|
SAFETY |
|
|
|
|
|
|
|
|
|
|
Suggested Resources |
Brown, W. C., et al.
(1985). Modern general shop. South
Holland, IL: Goodheart-Willcox.
Feirer, J. L. (1986). General metals. New York: McGraw-Hill.
Kibbe, R. A., et al. (1979). Machine tool practices. New York: John Wiley & Sons.
Matt, S. R. (1985). Machine tool operations: An introduction. Belmont, CA: Wadsworth