Related Experiment Video
Updated: Jul 5, 2025
06:15
Performing Microscope-Mounted Y-Shaped Cutting Tests
Published on: January 20, 2023
1.8K
Dataset on critical angular clamping speeds of fasteners
Jeferson Ferreira1, Adalto Farias1, Fabrizio Leonardi1
1University Center FEI- Ignatian Educational Foundation "Padre Saboia de Medeiros", Av. Humberto de Alencar Castelo Branco, 3972-B, Assunção, São Bernardo do Campo, São Paulo, Brazil.
Data in Brief
|January 18, 2024
Summary
This study investigated the stick-slip phenomenon in fasteners, identifying critical angular clamping speeds. Understanding these factors helps prevent stick-slip in screw clamping processes.
Area of Science:
- Mechanical Engineering
- Materials Science
- Tribology
Background:
- The stick-slip phenomenon is a critical limitation in fastener angular clamping speeds.
- Understanding factors influencing stick-slip is crucial for optimizing screw clamping processes.
Purpose of the Study:
- To investigate critical angular clamping speeds for fasteners.
- To analyze the stick-slip phenomenon and its influencing factors.
Main Methods:
- Design of Experiments (DOE) methodology was employed.
- Analysis of Variance (ANOVA) was used to analyze the data.
- The stick-slip factor (ratio of chattering amplitude to frequency) was measured.
Main Results:
- Identified critical angular clamping speeds for fasteners.
- Determined the influence of friction coefficient, clamping angular velocity, cathodic electrodeposition, and hardness on the stick-slip factor.
- Quantified the impact of these factors on torque and clamping force (preload).
Conclusions:
- The study provides valuable data for preventing the stick-slip phenomenon in screw clamping.
- Automated predictive algorithms can be developed using this data to enhance screw clamping processes.
Related Concept Videos
01:18Stress Concentrations in Circular Shafts
177
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
177
01:21Screw: Problem Solving
416
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
To evaluate the...
416
01:13Circular Shaft - Stresses in Linear Range
245
Consider a scenario where a circular shaft is subject to torque that remains within the boundaries of Hooke's Law, avoiding any permanent deformation. So, the formula for shearing strain is revisited. This formula is multiplied by the modulus of rigidity, and then Hooke's Law for the shearing stress and strain is applied. As a result, the equation for shearing stress in a shaft can be derived.
245
01:17Frictional Forces on Screws
1.2K
Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
1.2K
01:18Stresses in a Shaft
375
The shaft PQ is subjected to a twisting force when equal and opposite torques are applied on either side. A section that cuts perpendicular to the shaft's axis at any arbitrary point R is examined to understand this. When the free-body diagram of the QR segment is analyzed, it reveals the shearing forces exerted by the PR portion onto the QR segment as the shaft experiences twisting.
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
375
01:22Machines: Problem Solving I
327
A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
327