Difference between revisions of "Operating a Milling Machine"
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[[File:G0759.jpg | 400px |thumb|Grizzly G0759|right]] | [[File:G0759.jpg | 400px |thumb|Grizzly G0759|right]] | ||
| − | Make a small | + | |
| + | == Permanent Materials == | ||
| + | |||
| + | - G0759 Milling Machine and Milling Vise<br> | ||
| + | - Collets<br> | ||
| + | - HSS Mills<br> | ||
| + | - Drill Chuck and Drill Bits<br> | ||
| + | - Die and Tap Sets<br> | ||
| + | - Edge Finder<br> | ||
| + | - Dial Indicator<br> | ||
| + | - Parallel Bar Set<br> | ||
| + | - Digital Calipers<br> | ||
| + | |||
| + | == Consumable Raw Material == | ||
| + | |||
| + | - Al 6061 1 1/8" x 1 1/8" Bar Stock | ||
| + | |||
| + | == Activities == | ||
| + | |||
| + | Basic Idea: Make a small 1" Al cube with tapped holes and | ||
one face hogged out. | one face hogged out. | ||
| + | '''CLEAN UP AREA AFTER EACH LAB SESSION''' | ||
| − | + | # Get a safety demonstration from the instructor or TA. | |
| − | + | # Read the [[Media:Grizzlyg0759_Milling_Machine.pdf| G0759 manual]] Introduction and Safety sections (pages 2-10) and the Operations section (pages 22-32). | |
| − | - side | + | # Calculate Spindle Speed with this [https://littlemachineshop.com/mobile/speeds_feeds.php online calculator]. Set the mill's spindle speed to be no more than 3/4 the calculated speed and less than 80% of the maximum G0759's spindle speed. |
| − | - face mill | + | # Set up a ''rough cut'' of a ~ 1 1/8 length section from the Al bar stock using the band saw - Get instructor or TA approval before making the cut. Clean up metal shavings and put bandsaw and stock back in storage areas. |
| − | - edge | + | # Mount the rough block in the milling vise using parallel bars (rough side face up)- Get instructor or TA approval before milling. |
| − | - drill | + | # ''Face mill'' the rough side so that it's 1.000" +- 0.005" from its opposite face. |
| − | - tap | + | # Side mill the other faces such that all faces are 1.000" +- 0.005" from their opposites (use edge finder to precisely locate faces). Get instructor or TA approval before making first side mill operation. |
| − | + | # Drill and tap 4 8-32 screw holes at the corners of one face (1/8" in from both faces). Use this [http://www.americanfastener.com/tap-and-drill-size-chart/ drill and tap chart]. Discuss this procedure with instructor or TA before attempting. | |
| − | + | # Hog out the face opposite to the tapped holes. Leave 1/8" border and hog to 1/4" depth (make the process easier with a pattern of material-removing drilled holes). Discuss this operation with the instructor or TA before attempting. | |
| − | + | # Put all tools back into storage and clean up area. | |
Revision as of 13:18, 30 April 2018
Permanent Materials
- G0759 Milling Machine and Milling Vise
- Collets
- HSS Mills
- Drill Chuck and Drill Bits
- Die and Tap Sets
- Edge Finder
- Dial Indicator
- Parallel Bar Set
- Digital Calipers
Consumable Raw Material
- Al 6061 1 1/8" x 1 1/8" Bar Stock
Activities
Basic Idea: Make a small 1" Al cube with tapped holes and one face hogged out.
CLEAN UP AREA AFTER EACH LAB SESSION
- Get a safety demonstration from the instructor or TA.
- Read the G0759 manual Introduction and Safety sections (pages 2-10) and the Operations section (pages 22-32).
- Calculate Spindle Speed with this online calculator. Set the mill's spindle speed to be no more than 3/4 the calculated speed and less than 80% of the maximum G0759's spindle speed.
- Set up a rough cut of a ~ 1 1/8 length section from the Al bar stock using the band saw - Get instructor or TA approval before making the cut. Clean up metal shavings and put bandsaw and stock back in storage areas.
- Mount the rough block in the milling vise using parallel bars (rough side face up)- Get instructor or TA approval before milling.
- Face mill the rough side so that it's 1.000" +- 0.005" from its opposite face.
- Side mill the other faces such that all faces are 1.000" +- 0.005" from their opposites (use edge finder to precisely locate faces). Get instructor or TA approval before making first side mill operation.
- Drill and tap 4 8-32 screw holes at the corners of one face (1/8" in from both faces). Use this drill and tap chart. Discuss this procedure with instructor or TA before attempting.
- Hog out the face opposite to the tapped holes. Leave 1/8" border and hog to 1/4" depth (make the process easier with a pattern of material-removing drilled holes). Discuss this operation with the instructor or TA before attempting.
- Put all tools back into storage and clean up area.
