Pages: [1]   Go Down
Author Topic: Stepper Motor Based Linear Actuator  (Read 1134 times)
0 Members and 1 Guest are viewing this topic.
Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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
Logged

UK
Offline Offline
Tesla Member
***
Karma: 121
Posts: 6991
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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

Logged

Offline Offline
Faraday Member
**
Karma: 92
Posts: 5412
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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

Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,
DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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 !?
Logged

Offline Offline
Faraday Member
**
Karma: 92
Posts: 5412
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

http://www.haydonkerk.com/LinearActuatorProducts/StepperMotorLinearActuators/LinearActuatorsHybrid/Size8LinearActuator/tabid/74/Default.aspx
Logged

Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,
DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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

Oregon, USA
Offline Offline
Edison Member
*
Karma: 66
Posts: 2201
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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

"It seems to run on some form of electricity"

Offline Offline
Faraday Member
**
Karma: 92
Posts: 5412
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
 Guys please is there a way to buy Haydon products over the net  
Have you heard of email ?
« Last Edit: May 09, 2014, 12:20:22 pm by raschemmel » Logged

Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,
DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

Victoria, Australia
Offline Offline
Edison Member
*
Karma: 46
Posts: 1515
Electronics Engineer/Industrial Control
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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... smiley
Logged

Everything runs on smoke, let the smoke out, it stops running......VK3DMK

Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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 smiley
Logged

Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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... smiley

Yes that is true , my project is to control the infusion of medical solution using microcontroller smiley
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.
Logged

Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
 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 smiley
Logged

Oregon, USA
Offline Offline
Edison Member
*
Karma: 66
Posts: 2201
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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. http://www.pololu.com/product/2268
Logged

"It seems to run on some form of electricity"

Yemen
Offline Offline
Jr. Member
**
Karma: 0
Posts: 53
I am a Biomedical Engineer ,and So Proud ;)
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Thanks guys,

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

Oregon, USA
Offline Offline
Edison Member
*
Karma: 66
Posts: 2201
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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.
Logged

"It seems to run on some form of electricity"

Pages: [1]   Go Up
Jump to: