Stepper Motor Based Linear Actuator

Using Arduino Motors, Mechanics, Power and CNC
1

Hello,

I want to use Arduino to control a stepper motor based linear actuator ,I want to use this stepper to drive a simple syringe filled with fluid in a range of 1 to 10ml ,please can you suggest me an online shop where I can find a suitable stepper motor for my application ? Please help I need it ASAP ,I would be so grateful

2

You will need to know a good deal more than you have posted in order to select a suitable motor.

There are several (maybe dozens) of on line suppliers. Where are you located?

...R

3

Whatever solution you choose it will need to include micro-stepping. That is a feature that is not included in many stepper drivers.

4

I live in Yemen(middle east)

could you please see this link :

http://www.haydonkerk.com/LinearMotionProducts/StepperMotorLinearActuators/tabid/66/Default.aspx

These motors can be used for micro-stepping ,but please I have some questions:

what is the difference between captive ,non-captive ,and external stepper ?

how I can know the diameter of the screw ?

in my application ,do I plug the actuator to the syringe directly !?

5
6

Guys please is there a way to buy Haydon products over the net

7

What is the minimum volume of fluid that you intend to dispense?
How accurate must this volume be?

8

Guys please is there a way to buy Haydon products over the net

Have you heard of email ?

9

Hi, sounds like you are trying to imitate an insulin infuser that a lot of diabetics wear these days to provide small almost continuous supply of insulin to keep their blood sugars stable.
Have you tried looking in the medical or laboratory field, I know they will be expensive, but the theory and practice may help your implementation.

Tom... :slight_smile:

10

jremington:
What is the minimum volume of fluid that you intend to dispense?
How accurate must this volume be?

0.1 - 1 ml / hour
my application requires a very high accuracy :slight_smile:

11

TomGeorge:
Hi, sounds like you are trying to imitate an insulin infuser that a lot of diabetics wear these days to provide small almost continuous supply of insulin to keep their blood sugars stable.
Have you tried looking in the medical or laboratory field, I know they will be expensive, but the theory and practice may help your implementation.

Tom... :slight_smile:

Yes that is true , my project is to control the infusion of medical solution using microcontroller :slight_smile:
I only need the linear stepper motor actuator ,I have found a number of these medical infusers ,but I want to make my own assembly.

12

raschemmel:

Guys please is there a way to buy Haydon products over the net

Have you heard of email ?

I sent many emails to 3 companies, but I have not received a response ,so this is why I asked the question, If there is an online store where I can find linear stepper motor actuators ,that would be great :slight_smile:

13

This linear actuator may be suitable for driving a syringe pump, but it is still quite coarse compared to many others available. To get higher resolution you need a lead screw with a finer pitch. Pololu - Stepper Motor with 28cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase

14

Thanks guys,

I have one more question please, How could I determine the force required to exert on the syringe ?

15

Usually that is not an issue. Most motors, geared down by a lead screw, are very powerful compared to the resistance offered by a syringe driving a tiny fluid flow.