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Standards |
Posted:
10/09/07
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R State Standard |
£ Institutionally Developed |
College: n/a |
Provides instruction in the setup and use of the milling machine. Topics include: safety, milling
machines, milling machine setup, and milling machine operations.
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Competency Areas |
Hours |
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Safety |
Class |
2 |
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Milling
Machines |
D. Lab |
8 |
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Milling
Machine Setup |
P.
Lab/O.B.I. |
0 |
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Milling
Machine Operations |
Credit |
6 |
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Prerequisite: |
Provisional
admission |
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Corequisite: |
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Course Guide |
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Competency |
After completing this section,
the student will: |
Hours |
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Class |
D.Lab
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P.Lab/ O.B.I. |
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SAFETY |
1 |
1
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0 |
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List safe
milling machine operation procedures. |
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Demonstrate
safe milling machine operation procedures. |
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Demonstrate
safe cutter handling procedures. |
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0 |
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MILLING MACHINES |
5 |
5
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0 |
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Milling
Machine Parts |
Explain
each part of the mill and what the part is designed to do. |
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Locate
the controls for feed and speed regulation, direction of the feed, and direction
of the rotation of the cutter. |
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Vertical
milling machine maintenance |
Perform
basic vertical milling machine maintenance and lubrication. |
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MILLING
MACHINE SETUP |
14 |
24
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0 |
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Planning |
Plan sequence
of vertical milling operations. |
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Select
the type of holding device or hold down system according to the workpiece shape and size. |
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Alignment |
Align the
vertical milling machine head square to table. |
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Align workpiece, machine vise, and fixtures on vertical milling
machine table. |
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Dial in
stud or hole under milling machine spindle. |
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Use edgefinder to pick up corners of workpiece
on milling machine table. |
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Find the center
of workpiece using the tool cutter and the
"X" or "Y" feed dial. |
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Locate
the center of holes using a wiggler per part layout. |
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Tooling
Requirements |
Describe each
type of cutting tool or cutting assembly used on vertical mill. |
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Calculations |
Calculate
bolt hole locations. |
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Calculate
milling machine cut locations. |
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Feeds
& Speeds |
Use
charts to determine feeds and speeds. |
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Calculate
and set speeds, feeds, and depth of cut for vertical mill. |
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Preparation |
Change
tool holders and cutters on vertical mill. |
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Set up
vertical milling machine for manual operation. |
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MILLING
MACHINE OPERATIONS |
0 |
50
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0 |
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Hold
dimensional accuracy using digital readout on vertical milling machine. |
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Hold
dimensional accuracy using handle dials on vertical milling machine. |
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Machine parts
using end milling cutters on vertical mill. |
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Machine
parts using conventional and climb milling on vertical mill. |
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Machine
parts square on vertical mill. |
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Machine
closed pockets on vertical mill. |
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Machine
angles on vertical mill. |
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Perform hole operations using appropriate tooling on vertical
milling machine. |
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Tap holes
on vertical mill. |
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Mill
radii using rotary table. |
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Identify milling
problems, determine causes, and correct problems. |
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Suggested Resources |
Walker, J, Machining
Fundamentals. Goodheart-Willcox.
Kibbe, R., Machine Tool Practices. Prentice Hall.
Krar, S., Technology
of Machine Tools. McGraw
Hill.
Journals/Magazines*
Modern Machine Shop
American Machinist
Tooling & Production
Posted: 10/09/07