Surface feet per minute (SFPM or SFM) is the combination of a physical quantity (surface speed) and an imperial and American customary unit (feet per minute or FPM). It is defined as the number of linear feet that a location on a rotating component travels in one minute. Its most common use is in the measurement of cutting speed (surface speed) in machining. It is a unit of velocity that describes how fast the cutting edge of the cutting tool travels. It correlates directly to the machinability of the workpiece material and the hardness of the cutting tool material. It relates to spindle speed via variables such as cutter diameter (for rotating cutters) or workpiece diameter (for lathe work). SFM is a combination of diameter and the velocity (RPM) of the material measured in feet-per-minute as the spindle of a milling machine or lathe. 1 SFM equals 0.00508 m/s (meter per second, the SI unit of speed). The faster the spindle turns, and/or the larger the diameter, the higher the SFM. The goal is to tool a job to run the SFM as high as possible to increase hourly part production. However some materials will run better at specific SFMs. When the SFM is known for a specific material (ex 303 annealed stainless steel = 120 SFM for high speed steel tooling), a formula can be used to determine spindle speed for live tools or spindle speeds for turning materials. In a milling machine, the tool diameter is used instead of the stock diameter in the following formulas when the tool is revolving and the stock is stationary. Spindle speed can be calculated using the following equation: SFM can be calculated using the following equation: (Wikipedia).
Ex: Convert Feet Per Second to Miles Per Hour
This video provides an example of how to convert feet per second to miles per hour. Complete Video Library: www.mathispower4u.com
From playlist Unit Conversions: American or Standard Units
Ex: Convert Mile Per Hour to Feet Per Second
This video provides an example of how to convert miles per hour to feet per second. Complete Video Library: www.mathispower4u.com
From playlist Unit Conversions: American or Standard Units
Physical Science 1.6f - Unit Conversion Example 3
An example unit conversion problem, carefully worked out and explained in detail.
From playlist Physical Science Chapter 1 (Complete chapter)
Physics 2.5 - Motion In 1-D - Graphical Solution (2 of 12) Ex.2 Jet on Aircraft
Visit http://ilectureonline.com for more math and science lectures! In this video I will graphically solve the acceleration=? of a jet going from 0-175mph in 2.5 seconds. Next video can be seen at: https://youtu.be/DbbuL0-cQ84
From playlist PHYSICS MECHANICS 1: INTRO, VECTORS, MOTION, PROJECTILE MOTION, NEWTON'S LAWS
Conversion Application: Canyon Echo (Mile Per Hour to Feet Per Second)
This video explains how to convert miles per hour to feet per second and then answer questions about a sound echoing off a canyon wall. http://mathispower4u.com
From playlist Unit Conversions: American or Standard Units
Speed trap- Student investigation // Homemade Science with Bruce Yeany
Students investigate the speeds of the cars on the road outside of our school. We set up a speed trap and found that the majority of cars and trucks are over the posted speed limit.
From playlist Homemade Science with Bruce Yeany
MACHINE SHOP TIPS #88 Measuring Cutting Speeds tubalcain
CLICK ON THIS LINK--To go directly to the LFE website! http://www.lfe.com/courses/machine-shop Tubalcain shows how to measure cutting speed (SFM) using a Starrett revolution (speed) counter and a clock.
From playlist #1 MACHINE SHOP TIPS tubalcain playlist #1 thru #100
Calculus 1: Lecture 2.6 Related Rates
This is a real Calculus 1 classroom lecture. In this class I covered Related Rates. We did a few problems. - a warmup problem with x and y being functions of time - a related rates problem with a sphere - a related rates problem with a cube - a related rates problem with a triangle(house
From playlist Calculus 1 Full Lectures
Original Footage Of The Apollo 11 Moon Landing | Spark
With footage and interviews directly from the people that made the big steps for mankind, Moon Landing Apollo 11 gives us a firsthand insight to how the people of NASA orchestrated one of the most exciting events in space exploration of the 20th century. Subscribe to Spark for more amazin
From playlist Spark Top Docs
MACHINE SHOP TIPS #93 Checking the RPMs on Shop Machines tubalcain
Tubalcain demonstrates the use of 6 different revolution counters.
From playlist #1 MACHINE SHOP TIPS tubalcain playlist #1 thru #100
Building a Fly Cutter - Part 1
Part 1 of 2 - Building a fly cutter. Am not a big fan of multi-part videos, but .. act of god: Mill went down. Might take a bit to get it sorted, so I'm doing a 2 parter. Apologies ahead of time.
From playlist All Uploads
Building a Fly Cutter - Addendum
Some Q&A; a follow-up of sorts, for the fly cutter build. Hope this answers some questions!
From playlist All Uploads
Calculus AB Lesson 4.2: Related Rates
================================= AP Calculus AB / IB Math SL Unit 4: Applications of the Derivative Lesson 2: Related Rates =================================
From playlist AP Calculus AB
Physical Science 1.4h - Example
Drawing a position vs. time graph for the motion of an object.
From playlist Physical Science Chapter 1 (Complete chapter)
Ex: Convert Yards Per Second to Miles Per Hour
This video provides an example of how to determine the rate of 100 years per 10.1 seconds to miles per hour.
From playlist Unit Conversions: American or Standard Units
Prealgebra Lecture 1.5: Multiplication of Whole Numbers. Area of a Rectangle
https://www.patreon.com/ProfessorLeonard Prealgebra Lecture 1.5: Multiplication of Whole Numbers. Area of a Rectangle
From playlist Prealgebra (Full Length Videos)
Physical Science 1.2e - Units for Speed
Units for speed: a unit for distance divided by a unit for time always results in a unit for speed. From the Physical Science course by Derek Owens
From playlist Physical Science Chapter 1 (Complete chapter)
Physical Science 1.8d - Example 3
Example problem dealing with the acceleration due to gravity. The same problem as in the previous example except with metric units.
From playlist Physical Science Chapter 1 (Complete chapter)
الميكانيك التقليدي (إم آي تي) 35: وداع خاص، الفيزياء الفلكية عالية الطاقة
MIT المحاضرة الخامسة والثلاثون والأخيرة من مساق "الميكانيك التقليدي" من جامعة "إم آي تي" للبروفيسور والتر لوين وهي عن: وداع خاص، الفيزياء الفلكية عالية الطاقة بالإضافة للفيديو هناك ملفات مرفقة على موقعنا الالكتروني https://shamsunalarabia.net/courses/ﺍﻟﻤﻴﻜﺎﻧﻴﻚ-التقليدي/ رابط المساق https:
From playlist 8.01 Arabic Subtitles