Read about cutting | 7 Discussions | Page 1

  1. J

    B Why are serrated knives more effective than normal knives?

    What physical processes does serration take advantage of that make cutting something with a serrated knife more effective than cutting something with an ordinary knife? What is the optimal shape of each tiny segment of a serrated knife? Would cutting effectiveness increase as you add more...
  2. vivek_salman

    Shearing / Cutting Force - Rubber bale

    I have been assigned by my tutor to design a hydraulic guillotine (rubber bale cutter). After designing its features of the hydraulic, cutting blade etc. I tried to calculate the force needed of cutting a piece of Rubber bale (Natural as reference) having an ultimate tensile strength of 30 MPa...
  3. A

    How to calculate the force to cut a log?

    Good morning guys, So i want to make mechanism to cut log with diameter 5 cm and 120 cm length. So how i can calculate the force to cut this log perpendicular and paralel. What is tbe formula i can use? And how i can determine the saw thickness and rpm needed to cut this log? Thanks guys for...
  4. Sveral

    I Cutting magnets

    Hello, could someone explain to me, how I should cut a FeBa magnet, if it has one pole facing upward and the other downward so that the bloch wall would be across the entire length of the magnet. The dimensions of the magnet at hand are 152 x 102 x 52 mm. The bloch wall runs across the entire...
  5. J

    Misc. Custom building a CNC mill for aluminum

    So as a quick background I've made a 3-d printer (I know a monkey could assemble one of those DIY prusas) and want to step up my game a little bit. I came to the realization that some people have made/sold DIY milling kits, but most of them are for plastics or wood. I would like to make a...
  6. Dirk

    Calculate cutting force (guillotine) GFRP

    Hey all, I want to calculate the force which is needed to cut the blades of a wind turbine in half(for transport reasons). I presume guillotine is the best option due to various reasons. But I don’t know how to calculate the cutting force which is needed for this unique structure and material...
  7. R

    Shearing Force - Cutting Force

    I have been assigned by my tutor to design a plastic granulator. After designing its features of the shaft, rotor etc I tried to calculate the force needed of cutting a piece of plastic (POM/Polycarbonate) having an ultimate tensile strength of 70 Mpa (shear strength assumed to be equal to...
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