INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
(OP)
Hi,
I am working on my first assignment- Designing a 2 axis microsope holding robotic arm. I need some advice in choosing a bearing or sleeve which would help me acheive a tight sliding fit between arms.
I am planning to connect the two alumnum rectangular bars using a partially threaded 3/8" HHCS and tighten it at the at screw end using a hex nut and thrust bearing.
Is there a better way to do this? can I use a plastic sleeve with some tight tolerence to make an intereference fit? I am bit confused after I ordered my parts, anyone please throw some light on this.
Thanks!
I am working on my first assignment- Designing a 2 axis microsope holding robotic arm. I need some advice in choosing a bearing or sleeve which would help me acheive a tight sliding fit between arms.
I am planning to connect the two alumnum rectangular bars using a partially threaded 3/8" HHCS and tighten it at the at screw end using a hex nut and thrust bearing.
Is there a better way to do this? can I use a plastic sleeve with some tight tolerence to make an intereference fit? I am bit confused after I ordered my parts, anyone please throw some light on this.
Thanks!





RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
Preloaded tapers or spherical joints might be appropriate.
Or metallic flex joints.
RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
http://www.eng-tips.com/viewthread.cfm?qid=138270
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RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
RotoP25: I am lookin for y-z axes movements but again I cannot use the linear guides because of place constraints.
I am trying to mimic the traditional arm for a display screen. Traditionally they use either ball and socket joints or tight-fit/friction fits to sustain the position once the display is moved according to ergonomic convinence.
Pressed: the link you sent is does not help me in this aspect. I am not worried about revoloving these arms at speed at all. To make my problem sound simple, I am looking at a joint probably as simple as a screw and washer joint or a bolt and a liner kind of joint which will hold the two arms and also will be able to hold the load(display device in my case) at any point in 3d space.
I appreciate your responses, I will be glad to hear more from you. Links and reading material are welcome.
RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
http://www.flexpivots.com/index.asp
RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
Thanks unclesyd :)
RE: INTERFERENCE FIT ADVICE FOR DESIGN OF A MICROSCOPE ARM
If you have time let us know how it works out.