absolute position sensors or encoder

[Antodima77]

good morning to all, I would have the need for a project that I am developing to understand which is the best solution from a qualitative and economic point of view in choosing sensors or encoder
In one part of the machine I have a vertical trapeze screw that I manually move with flyer, the need is to be able to view the position(on a digital viewer) of the elements attached to the snail that move vertically in the 300mm race. with precision +o- 0.1mm
I would like to use an absolute encoder to attack on the screw, it would be discreet from the point of view of the encumbrances, or I would ask if it were better to use sensors, I would like to avoid the optical lines.
Thank you in advance for the answers

 

[PIETRO2002]

use of elesa viewers to mount on the flyer, since you have to move manually ?mi it seems a waste to use the encoder and its wiring that follows.

 

[Stan9411]

com a good encoder, you can definitely appreciate the tenth millimeter (converting angular reading in linear position).

With a visual system I think you're right at the limit of tolerance, if not below. Then it depends on the price ranges, maybe the infrared light sensors that happened to me to use were always too cheap ahaha. .

depends on costs, actual need ( 1 tenth millimeter with a handwheel? is the axis of a cutter?) and clutter ... answering in general is too difficult

 

[brn]

the problem of the absolute encoder that if someone knocks for maintenance are dicks. What's the point? if it is a step trapeze 4 mm 360 degrees are 4 mm 0.1 tenth are about 10 degrees. you can't find something mechanical with that elesq wolf resolution etc.

 

[Antodima77]

the screw is a step 4 ,

use of elesa viewers to mount on the flyer, since you have to move manually ?mi it seems a waste to use the encoder and its wiring that follows.

Sorry you have a model I see better resolution etc etc.

 

[meccanicamg]

in general as sensors is not that there is much to choose from.... or use an optical line or linear transducer, potentiometer ....so it can change the electrical principle but always that is the sulfa.
You have the problem of blue. a mechanical examination counter would not be bad and above all zero wiring.
you have to contextualize the application to better give you solutions.

 

[PIETRO2002]

the screw is a step 4 ,

Sorry you have a model I see better resolution etc etc.

Yes, of course, try to see the dd52r type position indicator in the elesa catalog, or choose one at your liking so you get an idea!

 

[Antodima77]

in general as sensors is not that there is much to choose from.... or use an optical line or linear transducer, potentiometer ....so it can change the electrical principle but always that is the sulfa.
You have the problem of blue. a mechanical examination counter would not be bad and above all zero wiring.
you have to contextualize the application to better give you solutions.

Thanks for the answer.
basically the movement in question moves a brake, the digital counter to display the position is a customer request . the mechanical meter I find it uncomfortable for the operator , because placed in axis on the screw is not very accessible

 

[meccanicamg]

then you have to go on something electric.....line would be better so read and automatically remove any games that form between the various organs and you have the true measure of positioning.

 

[PIETRO2002]

Thanks for the answer.
basically the movement in question moves a brake, the digital counter to display the position is a customer request . the mechanical meter I find it uncomfortable for the operator , because placed in axis on the screw is not very accessible

a possible idea, if feasible, cheaper and simpler, compared to something electric, put the flyer at 90° compared to the screw and add a conical couple or angular referral.

 

[New Rider]

also evaluates wire encorders if space allows you.