# Questions tagged [springs]

The tag has no usage guidance.

18 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
60 views

### Equation for the spring constant of an orthotropic, rectangular wire spring

I hope I can get some help with this problem as I've been struggling with it for a long time. I have a helical tension spring with radius $R$ and a square wire cross section and made of orthotropic ...
55 views

### Is an Adjustable Stiffness Flexure Spring possible?

I have recently discovered flexure springs (see image below), and I am interested in using one in an amateur project I am building. However, I would prefer if I am able to adjust the "stiffness" of ...
118 views

### Modifying coil spring to alter rate progressively

I want to modify the coil springs in my car to lower it 1" without raising the spring rate, so simply trimming the overall length is not an option. My idea is to remove material from along the top ...
288 views

### Designing a clamping mechanism for linear sliding stick

the problem I'm prototyping for a musical instrument based on sliding sticks (see https://vimeo.com/170450482) but I'm struggling to make a robust, yet smooth clamping mechanism for the sticks. The ...
89 views

### What type of spring is used in this antique receipt holder?

Pictured is an antique McCaskey Register Co Receipt Holder. I have tried to find a modern equivalent, but I have not had much luck. I am considering building my own, is the spring used a readily ...
35 views

### Launching a ball with springs or with elastic bands

I’m a student and have to create a machine that can launch a small bowling ball to knock over some pins. I was thinking that I could use elastic potential energy to launch the ball but I’m not sure ...
18 views

### How do I correctly model this system of torsion springs?

I am currently designing a symmetric parallel mechanism that can be modeled as follows: Here, $\tau^j$ denotes actuator moments and $k_i$ are torsion springs constants. For a specific point in the ...
41 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 ...
27 views

### A creep mathematical model of alloy steel for making springs

I'm searching for a mathematical approach to well describe the creep （or stress relaxation）of helical-coil compression spring.I've got the spring parts and can Experiment with these parts .I need ...
102 views

### Equations of motion for a motor supported by a spring resting at the centre of a beam

Assumptions from this: Sum of forces on the beam to be calculated Sum of moments on the beam to be calculated Sum of forces on the motor to be calculated As: F=-kx = kθL^2 Equations of Motion ...
40 views

### What are typical manufacturing constraints when producing (conical) springs?

Small background: for a project of mine I need to develop a (very light) conical spring. While there are plenty resources out there for regular springs I really struggled to find anything on conical ...
62 views

### Why don't we make mainsprings out of Kevlar?

The most important factor for mainspring is, as far as I understand the matter, is their yield point. In this regard, Kevlar beats steel by at least factor of two. So why aren't we using it instead ...
2k views

### Equivalent spring of beam supported by springs

My professor gave us yesterday a problem to calculate the equivalent spring of the system shown in the attached figure. The problem: a cantilever beam supported by two springs $k_1$ and $k_2$ located ...
271 views

### “Click” mechanism

I have an application in which I need to detect a button press on top of a platform which has a load (0.2kg ~ 0.5kg). The press is executed on the load. Ideally I think what want is a tactile button ...
59 views

### Are there design reasons why there aren't pneumatic pistons for chairs with a stroke >= 400 mm?

In the interest of saving space, I'd like to have a stool that can double as a table. I'd like the height to be adjustable from 16 inches to 32 inches. But I can't find any pneumatic/spring piston ...
481 views

### Deriving relationship between LVDT and mass spring damper

I have this system below. It is the schematic of a linear accelerometer moving horizontally, where $m$ is the total mass of the slide, $b$ denotes the viscous damping, and $k$ represents the spring ...