Recent content by Bern123

Hello, I've a small project (stewart platfrom) part of another one. I'd like to move my platform with a joystick on X, Y translations and roll, pitch, yaw. Since this is a component of a bigger project, so this part should just move without precise kinematics, I'd like to perform approximate...

So, if i need high speed applications, alluminium will not be good?

The plunger is in steel. I don't know how tube may influence in positive or in negative. I always see actuator in pvc tube.

Hi, what differences are if i use a pvc tube to build an actuator(solenoid with plunger) or alluminium? Alluminium can intensify magnetic field? but the plunger will stick with alluminium? or solenoid will have less force?

A project, i need to move weights of 150 g within 50ms at 20hz. I need something like how to start project a solenoid, from specifics i need of solenoid to better wire type to power it. What i find is only solenoid physics theory but it is useless if i want to built one.

The price of commercial solenoid is too high, and i need to build a lot of it(15-20) with different powers. I've used this calculator: http://www.daycounter.com/Calculators/Magnets/Solenoid-Force-Calculator.phtml With 10 A to have 50N. I probably will use a PC supply to power solenoids.

Also: - How much frame influence the magnetic flux? I need to connect it to ground or an end wire of the coil? Permalloy is a good material to have a high speed(50-100hz) and high force(10N-40N)?

I need to project a solenoid. But i have some questions: - How much need to be thick enamelled copper? How i can calculate the thickness necessary? (to not burn solenoid wire) - Will be good enamelled alluminium too? This if i suppose to power it with 10A, 2000turns. And: - How i can power...

What k mean in coulomb law? it's 1/(4π*ε) but why is in this form? 4π it's related to the shape of an atom?

Hi all, i have a doubt. How much teeth in relationship to his radius need to have a gear to be optimal? And, if i have 2 gears with same radius and same #of teeth, to have low friction and low negative effect from weight how much teeth they need to have and with which radius? I know it's too...

I've solved, I looked to the flexural strength that is calculated with standard dimensions independently of the material and density of material.

At parity of maximum resistance before failure (in the case of aluminum, deformation), weighs less aluminum or plastic? Let me explain better: if i apply a force of 1000N on one end of a rectangular plate with a fixed fulcrum on other side, beyond this force both materials deforms / break. The...

I tought about it, but I'll need Stepper motor + Electronics that will cost a lot, consider that I need to make 4 or 5 of this arms and each arm have 2 gripper, the price will be soo high.

Thank you! Yes, sorry, i wrong to type. It's 20ms.

Hi all, i need to create an electric gripper, the speed of the greep need to be about 2ms. So i tought to use a solenoid that can be real fast, but i found only hydraulic solenoid(and i can't find force that they can generate in datasheets) or big and heavy solenoids(too much for my project)...