Difference between revisions of "Lathe operation"
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| − | The Monmouth College Physics machine shop (1XX) has the '''Grizzly | + | The Monmouth College Physics machine shop (1XX) has the [http://www.grizzly.com/products/8-x-16-Variable-Speed-Lathe/G0768#|'''Grizzly G0768 - 8" x 16" Variable-Speed Lathe''']. |
[[file:MMS 1214 n grizzly.jpg]] | [[file:MMS 1214 n grizzly.jpg]] | ||
| + | ===Specs=== | ||
The following is an excerpt from the Grizzly webpage: | The following is an excerpt from the Grizzly webpage: | ||
| Line 30: | Line 31: | ||
| − | Instructional Videos | + | ===Instructional Videos=== |
| + | [http://tomstechniques.com/ General website] | ||
| + | |||
| + | [https://youtu.be/N64zXZH5SPg Simple lathe operations on the 7x10 mini-lathe] | ||
| + | :"face-off" using a carbide tipped tool. | ||
| + | :"file" while turning to finishing an edge. | ||
| + | :"center-drilling" with end-mill attachment. | ||
| + | :"center-drilling with a drill chuck" using a stubby drill bit. | ||
| + | :"parting" with a parting tool. | ||
[https://youtu.be/J63dZsw7Ia4 How to Select the Proper Cutting Tool for Lathe Operations - Basic Tutorial] | [https://youtu.be/J63dZsw7Ia4 How to Select the Proper Cutting Tool for Lathe Operations - Basic Tutorial] | ||
| + | |||
| + | [https://youtu.be/gIUS_0xfeGg Cutting Speed and RPM on the Lathe and Mill] | ||
| + | :Mild Steel-1018 100 SFPM (surface feet per minute) | ||
| + | :Tool Steel-oil harened (harder than mild steel), 70 SFPM | ||
| + | :Cast iron, 60 S | ||
| + | :Stainless steel (304), ? SFPM | ||
| + | :Stainless steel (318), ? SFPM | ||
| + | :Aluminum (soft metal), 250 SFPM | ||
| + | :Brass (soft metal), 300 SFPM | ||
| + | ::Take home info | ||
| + | :::the harder the metal, the lower the RPMs | ||
| + | |||
| + | :conversion of SFPM to tool RPM --> 4 x cutting speed in SFPS /tool diameter | ||
| + | ::mill/drill example; mild steel using a 5/8" tool --> 4 x 100 SFPM/0.625" = 640 RPM | ||
| + | ::lathe example, using a | ||
| + | ::drill example | ||
| + | |||
| + | ===Materials=== | ||
| + | |||
| + | ====Plastics==== | ||
| + | Delrin | ||
| + | |||
| + | ====Metal==== | ||
Latest revision as of 22:04, 24 November 2017
The Monmouth College Physics machine shop (1XX) has the Grizzly G0768 - 8" x 16" Variable-Speed Lathe.
Specs
The following is an excerpt from the Grizzly webpage:
This 8" x 16" Variable-Speed Lathe is perfect for a sturdy workbench or as a stand-alone unit when mounted on the T26599 Optional Stand [which MC has]. Features variable-speed spindle with high/low speed ranges, convenient quick-lock tailstock, reverse feed for cutting left-hand threads, and a great selection of included standard equipment.
Specifications:
- Swing over: bed 8-1/4", cross slide 4-5/8"
- Distance between centers: 15-3/4"
- Spindle: bore 0.787" (20mm), taper MT#3
- Motor: 600W (3/4 HP), 110V, DC, 10A
- Spindle speed ranges: Low 50–1000, High 100–2000 RPM
- Travel: compound rest 2-1/8", cross slide 3"
- Tailstock: quill travel 2", taper MT#2
- Feed speeds: (3) 0.0037"–0.0071"/rev
- Inch threads: (15) 9–44 TPI
- Metric threads: (12) 0.4–3.0mm
- Footprint: 31-1/2" x 10-1/2"
- Overall size: 36" W x 16" D x 14" H
- Approx. shipping weight: 166 lbs.
Standard Equipment:
- 4" 3-Jaw and 4-jaw chucks
- 6-3/4" Faceplate
- Steady rest & follow rest
- 4-Way turret tool post (3/8" max tool size)
- MT#2 & MT#3 dead centers
Instructional Videos
Simple lathe operations on the 7x10 mini-lathe
- "face-off" using a carbide tipped tool.
- "file" while turning to finishing an edge.
- "center-drilling" with end-mill attachment.
- "center-drilling with a drill chuck" using a stubby drill bit.
- "parting" with a parting tool.
How to Select the Proper Cutting Tool for Lathe Operations - Basic Tutorial
Cutting Speed and RPM on the Lathe and Mill
- Mild Steel-1018 100 SFPM (surface feet per minute)
- Tool Steel-oil harened (harder than mild steel), 70 SFPM
- Cast iron, 60 S
- Stainless steel (304), ? SFPM
- Stainless steel (318), ? SFPM
- Aluminum (soft metal), 250 SFPM
- Brass (soft metal), 300 SFPM
- Take home info
- the harder the metal, the lower the RPMs
- Take home info
- conversion of SFPM to tool RPM --> 4 x cutting speed in SFPS /tool diameter
- mill/drill example; mild steel using a 5/8" tool --> 4 x 100 SFPM/0.625" = 640 RPM
- lathe example, using a
- drill example
Materials
Plastics
Delrin