Need Help in doing a 3 Axis Robot

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ArunGokul

New Member

• Jan 13, 2010

• #1

we're fabricating a 3 Axis Robot which pick and places the objects.
It would be great help if anyone of you people come with an idea regarding the robot as I'm new to robotics.
I need help regarding as what type of motors to be used for moving in x.y.z axis, how they'll be moving.

 

breadboardguy

New Member

• Jan 14, 2010

• #2

It depends on what processing unit you have.

If its a computer you could use bipolar stepper motors and count the steps to keep tracking, but an easier solution and more adapted for what you need would behobby servo motors.

Edit:

The motors need to be smaller from where they are on the arm (a big one that moves horizontally, a medium for the vertical and a small one for the elbow and some sort of lightweight device for the hand)

 

Last edited: Jan 14, 2010

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ArunGokul

New Member

• Jan 14, 2010

• #3

Thank You for the reply breadbroadguy.
we're operating the robot from a alphanumeric keypad connected to a microcontrolller.
The Gantry will be 50 cm high, below it a yard is placed which contains 10 small blocks of wood(35 gm each).
when we press 5 on the keypad the robot must move along the axis and reach that place and pick up the block and place it in another yard.

 

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Al1970

New Member

• Jan 14, 2010

• #4

Take a look at: Robotics

Al

 

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ArunGokul

New Member

• Jan 16, 2010

• #5

Thank you Al970 for the suggestion.

 

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ArunGokul

New Member

• Jan 16, 2010

• #6

I need to know about the procedure for the fabrication of arm and the gantry.

 

Mr RB

Well-Known Member

• Jan 18, 2010

• #7

If this is a low cost educational robot, you can get sliders and stepper motors from old dotmatrix printers. Or you can buy cheap stepper motors on ebay and get cheap "drawer slides" from the hardware store to act as linear bearings for the gantry.

 

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ArunGokul

New Member

• Jan 19, 2010

• #8

Mr RB said:

If this is a low cost educational robot, you can get sliders and stepper motors from old dotmatrix printers. Or you can buy cheap stepper motors on ebay and get cheap "drawer slides" from the hardware store to act as linear bearings for the gantry.

Click to expand...

Thank You Mr.RB for ur reply.
This is not a low cost project. The cost that we're going to put is around 25K. We first thought of u r idea but keeping stepper motor increases weight. so we thought of keeping servo motors but have no idea to implement them. Could you elaborate on the sliders concept and servo motors.

 

Mr RB

Well-Known Member

• Jan 19, 2010

• #9

25K rupees or dollars?

If this is an expensive machine that needs good performance then you will need to start with a very clear spec, like what speeds, distances, weight of load, posiitoning accuracy etc etc, then choose components from there.

To give you some idea of mechanical prices have a look at the McMaster-Carr online catalogue, they have most stuff like motors, couplings, linear bearing sliders, etc etc. Then once you know what bits you need you can source some a bit cheaper on ebay or from China.

 

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ArunGokul

New Member

• Jan 20, 2010

• #10

Thank You again for the reply Mr.RB,
Our project may account to Rs.20000.
we have learnt today that the linear motion of a carriage is from a timing belt and stepper motor.
i need details of remaining other axis movements also.