Questions tagged [machine-design]

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1answer
49 views

What mechanism is available to rotate a metal piece on another metal piece?

I am trying to find some type of mechanism where I can have a smooth but not too stiff rotation between two metal pieces. I was thinking of putting a shoulder screw through the pieces (the pieces will ...
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0answers
30 views

Fitting a sprocket on a small motor shaft

I have a bit of a newbie question. I've inherited a mechanical system, wherein the motor has a D-type output shaft with a diameter of 8mm. (https://www.ebay.co.uk/itm/DC-High-Torque-Worm-Reducer-...
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1answer
37 views

Any books about design of complex machines? [closed]

I'm familiar with several books that deal with the analysis and design of simple mechanisms (such as Norton's Design of Machinery), including four-bar linkages, gear trains and cams. There are also ...
-1
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1answer
51 views

visualization of intersection of two objects [closed]

This is from a design entrance that I am preparing for. I know it's a little different than a theoretical projection drawing that engineering books usually cover. It is more practical and ...
0
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1answer
63 views

Analysis of Machine Frames With Cut Outs

I have a structure that is used to support two shafts which are carrying relatively high loads. It is composed of two columns and a "shaft supporting block" in the centre (almost acting as a beam). ...
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2answers
50 views

What kind of mechanism can be used to rotate a part in 180 degrees (Ψ (yaw)) and 30degrees in 𝜃 (pitch) direction?

Let's say we have a flat object. We are asked to create some mechanism so that the part can rotate in the shown angles above. What mechanisms can be used?
0
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1answer
34 views

What are the different methods to join 2 parts so that one can rotate 180 degrees around the other?

Let's say we have one simple box and its bottom has been cut in a circular shape. We want to attach another box to this box that can rotate 180deg around the first one. What mechanism can be used to ...
1
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0answers
21 views

Springs on a pulley… When to use?

I saw a machine that fed a sheet of laminate through some rollers. The motor had a pulley attached to its shaft, and a spring connected to the pulley. Why not use a belt? Wouldnt the spring make it ...
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0answers
78 views

Machine Frame Design

How do I select the cross section for a machine frame? Do I need to refer to the AISC steel construction manual to find the capacity of beams, columns, etc?
3
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1answer
74 views

What mechanism do I use for this pen-like design?

I am trying to make a pen-like product that moves out fluid from its tip for some special chores, but I am having issues about the motion of the clutch. The picture you see is a sectioned concept ...
0
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0answers
128 views

Bearing stress v/s crushing stress

What is "Bearing stress" and Is it different from Crushing stress? If yes explain How? and When does an element come under Bearing Stress? This question came to my mind while studying knuckle joint ...
1
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1answer
56 views

I need help identifying a special kind of coupling

I found this switchable coupling in Rollof/Matek machine elements, i have never seen this kind of coupling before. According to the dutch edition its name is: Tweevlakskoppeling Which literally ...
0
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1answer
34 views

How to choose between two possible arrangements of tapered roller bearings?

I don't know how to decide between the $X$ and $O$ arrangement, i don't have any specific example at this moment, but i want to know. Catalogues offer only some basic calculations. I'm not quite sure ...