Making a Linear Stage (Finding Parts)

Community Projects
1

Hi All,

I’m looking to make a linear stage to be used inside an experiment box (acrylic sides and wooden frame).

All of our parts that are inside the experiment box have to be non-metallic.

This is the design. https://imgur.com/a/50KW1 (The second belt is mission for bevel gear. This is only working design. Will make final design once I have selected right parts). Both of the stepper motors run in the same direction same speed to move the platform in y direction. The z direction motor is turned on to lift the load (<1 kg) up/down.

I’m finding it very hard to find right bevel gear set that looks like this. https://i.imgur.com/zBKsUfN.png

  1. I’ve selected stepper motors:

https://www.sparkfun.com/products/10846

and Big Easy Driver to run the motor.

The stepper motor is situated outside, so timing pulley is metal component.

  1. Timing Pulley: http://www.robotdigg.com/product/59/Ros … GT2-Pulley

  2. Timing Belt: http://www.robotdigg.com/product/10/Ope … h-GT2-Belt

  3. Plastic timing pulley: This pulley goes inside the box, so it is plastic.

https://i.imgur.com/G1xzgOw.png

My Question is, have I selected right components and compatible parts? Will it be able to sustain the load? All of the materials would be acrylic (Platform, guide rods, support ends).

  1. Can you help me find right bevel gear set? The lead screw that goes inside the bevel gear would also be plastic (nylon).

Sincerely,

Kev

2

I am not sure if I can answer your question, however you may have missed some vital bits of information.

  • What are the dimensions of the parts

  • What are the expected operational loads

  • What is acceptable slop during operation

-mark

3

Hi Mark,

The dimensions of the part are not visible in the images, but overall the entire system is not to exceed 55 cm in length and we have about 30 cm of width and 25 cm of height (inside the experiment box).

  • Operational loads are very minimum. The weight of the microscope slides and electrodes is negligible compared to the weight of the system.

  • I’m not familiar with the slop. Is it %error, feedback error? +/- within 1 cm should be okay.

Thanks,

Kev