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How to estimate the rounding toque of an allen key socket?

I can't find an example calculation for the maximum torque of an allen key socket (the female bit on the screw head that the allen key goes into) anywhere online, or in textbooks, can someone point me ...
m_thomp456's user avatar
0 votes
1 answer
27 views

Motor torque required to move a trolley

This is a real situation. The trolley is mounted with a rack underneath it and multiple steel wheels on a steel track. The trolley is driven by the rack and pinion mechanism from a geared motor. The ...
ship's user avatar
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1 answer
18 views

eccentric to linear

How does one translate the up and down distance moved in degrees when rotating around an eccentric bearing eg 10 degrees will get me X in a linear value
Kevin Lardinois's user avatar
-1 votes
0 answers
24 views

How can I calculate the required motor torque to push a weight of approximately 15 kg?

I am working on a machine where I need to push a material weighing around 15 kg. The system consists of a motor and a ball screw mounted on the same axis, connected via a coupling. The ball screw has ...
Saiyam Shah's user avatar
1 vote
0 answers
27 views

Single millinewton strain gauge suggestions

I am working on a project where the precise & accurate measurement of single millinewton forces has become a significant boundary. Is there a cost effective device that is able to measure such ...
Oschnid's user avatar
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3 answers
69 views

Electronic enclosure - Long screw holes

am designing an electronic enclosure for a medical device. For assembly reasons, the enclosure is split into two halves, with the bottom half having a depth of 200mm and top half of depth 50mm. I want ...
Sengalraja's user avatar
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0 answers
18 views

Method to calculate required gear size and teeth size for a rack system for a certain amount of travel?

high school amateur engineer- and first-time poster- here. I'm making a Nerf automatic springer system, and I want to model it. However, I don't know what size rack and gear system I need. I need 60 ...
Tom Foolery's user avatar
1 vote
0 answers
34 views

Cryogenic pump - why is this part slotted?

What is the purpose of that slotted area? In my opinion it is done that way in order to prevent it (the impeller) from sticking to the pump body in case it is not properly cooled down. Some people say ...
Gabriel Zitterspiller's user avatar
0 votes
0 answers
18 views

Find stresses involved and calculate magnitudes

I am new to mechanical design.What all forces and moments act on the hinge plate in following figure?How to find magnitude of stresses induced on the supports? Note: The spring is an expansion spring ...
Bumane's user avatar
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0 answers
39 views

Free body diagram problem: Linkage w/ magnets and friction hinge

I am a bit stumped on a IRL problem, which i simplified in the diagram below: There are left and right beams (gray) linked together by a friction hinge. The bottom beam (black) is connected to the ...
Philip C's user avatar
0 votes
0 answers
70 views

Understanding moment load on axis (for robotic arm)

Check Pete comment for explanation below :) thank you Pete! I need help understanding a concept im struggling with for quite a while now. Im looking at different type of robotic arm designs, and some ...
iSoda's user avatar
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0 answers
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Spring compression and quick release mechanism

I'm in a group and we're designing a wheel that can inflate and decompress using springs. The purpose of the string compression/decompression is to give our tires this jumpy/bouncy like movement. ...
Jelan Womack's user avatar
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0 answers
14 views

I need a good description of a flow control valve for a tankless gas geysers. Preferably the battery type

I need to understand the working of the flow control valve of a battery operated tankless gas water heater. It's the two or three knob geyser that uses 2 x D-cell batteries for ignition. But I ...
Tiens Zietsman's user avatar
1 vote
1 answer
114 views

how to interpret ISO2768-mK angular tolerance

How to apply tolerance for angle based on ISO-2768-mK? Cause I am confused about the statement "Permissible deviations in degrees and minutes for ranges in nominal lengths". Lets say I have ...
CKK33's user avatar
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1 vote
0 answers
32 views

Can anyone suggest an Economical way for Polishing wound Wires?

I am working as a mechanical design engineer. At my work place, we were making chairs with 12 mm diameter wire via bending. We were using mild steel flash wires which was like the perfect wire with ...
AKKK24X7's user avatar
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0 answers
49 views

What is the difference between 7201 vs 7201 BEP Single Row Angular Contact Ball Bearings?

What does BEP mean when applied to types of ball bearings?
lovedrinking's user avatar
0 votes
2 answers
31 views

How do rotate a picture on a wall once every 24 hours?

I have a picture with various day and night scenes that I would like to hang on a wall and have automatically and uniformly rotated once every 24 hours. The picture is roughly 55cm in diameter, 2cm ...
Slarty's user avatar
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0 votes
2 answers
58 views

What strapping mechanism is this?

What should I google to find the strap from the picture? It looks like a screw is used to tension the strap, which is exactly what I need. I've already spent some time trying to find a manufacturer ...
slm992's user avatar
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0 votes
1 answer
73 views

Force Required To Stop A Freely Rotating Wheel With Attached Falling Object With A Spring

I have a wheel with a diameter of 2m and a weight of 67kg. The wheel has a radius of gyration of 0.82m. From this wheel a weight of 35kg is suspended. The weight will fall for 10m and accelerate the ...
Mecky's user avatar
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0 votes
2 answers
98 views

I want to cover a circular area with a sheet that is rolled onto a curved metal rod

My challenge is that the sheet gets bent in places around the rod making extension challenging. Another challenge is that since the metal rod is curved it turns in an awkward way that I want to ...
Harsha Kumar's user avatar
0 votes
0 answers
38 views

How to attach plates (my design) to the stator core of the machine more efficiently and precisely?

I am working on an electrical engineering project. However, I have come across a specific mechanical engineering problem. I have attached an image to describe what I want to do. I have primarily a ...
Hassan's user avatar
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0 answers
45 views

Kindly explain this graph which is related to internal combustion engines

Hello, I am not getting this graph which is related to the Internal Combustion Engine.
ABDUL SABOOR KHAN's user avatar
0 votes
3 answers
123 views

Need help analyzing torque transfer and slippage condition between parts

I have a scenario where Plate A (light blue) shown in the image below is being pressed against two different plates that are in contact with different sections of Plate A. I would like to know which ...
SoloLeveling's user avatar
0 votes
0 answers
35 views

New to AutoCAD, trying to accomplish a simple task of trying to simulate how much force can a U channel withstand

Sorry if my question or parts of it seem vague or stupid, I'm fairly new to mechanical engineering. I'm part of a team that is building a simulator platform and I am mostly at the helm of the software ...
Zeshan Noori's user avatar
0 votes
2 answers
45 views

Wind Turbines on Cars used for Aerodynamic Braking

After a lot of research, I have found that people have been continually claiming that Wind turbines on Cars would not help whatsoever due to the Law of conservation of Energy. While this statement is ...
Ruthvik Venkatesan's user avatar
0 votes
0 answers
18 views

Motor for a sukkah rooflight

im designing a motor for a roof light but will need to be disengaged from the motor and be able to open and close without any electricity. any ideas would be greatly appreciated
william's user avatar
1 vote
2 answers
85 views

Mechanical linkage

I am not an mechanical engineer and I have a question about this laboratory rocker (https://www.thingiverse.com/thing:2948680/files). As I wish to reduce the height of the Model_Base.stl by half, by ...
alirazi's user avatar
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0 votes
1 answer
39 views

Characteristics of a smooth belt

I want to replace a cylindrical pulley, so I came across a component called a smooth belt. Now this thing came with many differenent variations, from 2.00" up ...
user1584421's user avatar
0 votes
0 answers
80 views

How to determine whether a threaded rod will rotate under load

A part of a structure I am designing incorporates a large threaded rod (1") diameter mounted vertically both for structural strength and for the potential to adjust the height of the top mounted ...
Nachiket Adhvaryu's user avatar
0 votes
0 answers
43 views

Frames and Statics Question

this is an image describing an exam question I have to practice on, and I am so stuck.
Luca's user avatar
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0 votes
0 answers
76 views

Building Equations of Motion

The following figures represent a model of a building, can someone help me, extract the newton equations of motion and determine the degrees of freedom.
Rayleigh's user avatar
0 votes
2 answers
109 views

Why do some car's A-engine-mounts have bolts vs studs vs both?

I have come across engine mounts of various cars and am just curious primarily related to the "A" engine mounts where some manufacturers use only BOLTS, while some use only STUDS and some ...
Akay's user avatar
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0 answers
22 views

FEA of Rectangular Body Under the Effects of Combined Rotational and Translational Shear

First image is model setup. Clasp is rigidly constrained at top surface. Rectangular beam is affixed to clasp at clasp faces (locally constrained), by way of adhesive pads (second and third images). ...
C_Nyuli's user avatar
0 votes
2 answers
209 views

gear size selection for a compound gear system to fulfill a specific output ratio

I need help creating a compound gear system that will result in the sought after drive ratio or very close to it. Naturally gear teeth need to be whole numbers. Websites like 'GearGenerator' (dot-com) ...
Inventor Moe's user avatar
0 votes
0 answers
22 views

Question about dynamics n-t coordinate system

et = tangential unit vector en = unit vector in normal direction I'm currently studying dynamics and I'm having difficulty understanding the process of obtaining det and det/dt in the n-t coordinate ...
RMDL's user avatar
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1 vote
1 answer
103 views

Acceleration of servo motor with AASD-30A

I am using a servo motor 130st-M15015LB with the AASD-30A driver. I have to use the acceleration with position control mode. I can see in the documentation that If I use Pn110 to Pn112, I can have a ...
Leonardo Rafael Mora's user avatar
1 vote
1 answer
105 views

Stepper motor response under varying load

I had a thought that came to mind that made me curious-- Though unfortunately I am not an ME. I was wondering if someone could assist me in working through my thinking, but you will have to be gentle ...
Nevermnd's user avatar
0 votes
0 answers
290 views

What is the purpose of the additional metal bar on the latch bolt(tongue)of the door lock?

Hi. As you may see at the photo,the tubular latch has a triangular metal and a thin half cylindrical piece of metal next to it. The purpose of the triangular one is obvious,but What is the purpose of ...
xchcui's user avatar
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0 votes
0 answers
91 views

2-speed 2-direction gearbox design

I need to design a gearbox with the following properties: The direction of rotation is maintained between the input and output shaft The input shaft can be rotated in one direction for one gear ratio ...
Rob's user avatar
  • 1
0 votes
1 answer
264 views

What will the reaction forces of a support be in case of an angled cable

If a cable is attached to a support on each side, and there is a load acting on it somewhere along its length. Is there going to be a vertical reaction force only if the the cable is angled?
kokos115's user avatar
0 votes
1 answer
103 views

The knee gives a mechanical advantage point for the leg, would a "reverse knee lever" also work?

As shown in this video, the simulated knee cap creates a fulcrum that allows for a better mechanical advantage for the muscles to pull the leg. So I was wondering if the reverse would also work, or if ...
Fulano's user avatar
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-1 votes
1 answer
43 views

How to keep a stationary motorcycle handle in the forward direction

How to keep a stationary motorcycle handle in the forward direction if no force is applied to rotate it. I have seen such motorcycles in Arcade Game Parlours but I want to make such one for myself.
Manjinder's user avatar
1 vote
2 answers
169 views

How to align a shaft with gear box and mechanical seal and uc bearing?

I have a 15 inch (381 mm) shaft with 24.95 mm diameter. That shaft is attached with a gearbox (ratio 5:1). The gearbox is driven by a motor (rpm 2750). There is one UC bearing and mechanical seal and ...
Sazed Karim's user avatar
0 votes
0 answers
25 views

Which tool to measure shaft alignment for small diameter shafts (d=10mm)?

I have seen many tools and methods to check shaft alignment, but they are mostly used for big shaft. I wonder if there are small tools for small diameter shaft with limited space to install? Can you ...
Random engineer's user avatar
2 votes
1 answer
303 views

Torx, Hex, Philips or Slotted screws

I mostly use M2.5 size screws. I got some brand new Torx screws but when I tightened them for the first time, either they stripped or the bit of the screwdriver got twisted. What could be the reasons? ...
lovedrinking's user avatar
0 votes
0 answers
52 views

How to affix a 3/4" keyed bore wheel/pulley to 5/8" D-profile shaft?

How do I affix a 1.5-inch-thick wheel with a 0.75-inch keyed bore (or pulley) to my motor's 1.25-inch-long x 5/8" diameter D-profile shaft (both pictured)"?
JJ Zabkar's user avatar
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0 votes
0 answers
54 views

DC Motor - need to go to 200-10,000 RPM

I'm currently working on a setup with Raspberry Pi, a 12 V DC motor and a L298N driver. I need the motor to go from 12000 RPM to 200 RPM, or at least in that range - the only problem is that the L298N ...
Rhythm's user avatar
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0 votes
0 answers
20 views

hydraulic pressure per cylinder, see below

when providing 2800 psi pressure to 6 hydraulic cylinders with .196 area of each cylinder what is clamping force on each cylinder. F=Pressure *area so 2800 x .196 is 548.8 psi or is it 548.8 /6 = 91,...
dag7649's user avatar
1 vote
0 answers
73 views

Compound Machine with Worm and Worm Wheel Drive Velocity Ratio

I'm having trouble understanding the working principle behind solving this worm drive. Here's the question: A double threaded worm and 40-tooth worm wheel are used to drive a mechanical winch. The ...
Swiss Gnome's user avatar
0 votes
1 answer
79 views

Scissor mechanism won't budge with slotted pin

I am looking to better understand why this scissor mechanism so easily moves by directly pulling on the lift...yet, seems incredibly difficult/impossible to move via the attached point in the slot? ...
afreeland's user avatar
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