Name: toggle clamp force analysis
Uploaded: 2023-09-22T11:49:25.000Z
Duration: 1 min 22 s
Channel: JoVE

Rozważmy docisk szybkomocujący poddanego działaniu siły 200 niutonów na uchwycie.
Jaka jest pionowa siła docisku, pod warunkiem, że znane są wymiary docisku szybkomocującego?
System ten jest konstrukcją maszyny składającą się z ruchomych, połączonych sworzniowo elementów o dużej sile, które tworzą stabilizowany system do przenoszenia sił.
W tym przypadku członek CD jest członkiem dwusiłowym. Tak więc siły współliniowe działające na obu końcach są równej wielkości, ale przeciwne w kierunku.
Konstruowany jest wykres swobodnego ciała dla przekroju BCF, a warunek równowagi momentu jest stosowany do sworznia obrotowego B. Wynik daje wartość siły wzdłuż pręta CD.
Stosując warunek równowagi sił poziomych, uzyskuje się poziomą siłę reakcji na złączu B.
Teraz, biorąc pod uwagę wykres ciała swobodnego dla sekcji EBA, warunek równowagi momentu można zastosować w stawie A.
Podstawiając wartość poziomej siły reakcji w punkcie B do równania równowagi momentu, otrzymuje się siłę działającą na płytkę mocującą w punkcie E.

<ol>
	<li>Hibbeler, R.C. (2016). Mechanika inżynierska \u2012 Statyka i dynamika. Hoboken, New Jersey: Pearson Prentice Hall. Strony 305.</li>
	<li>Piwo, F.P.; Johnston, E.R.; Mazurek, D.F.; Cromwell, PJ i Self, BP (2019). Mechanika wektorowa dla inżynierów \u2012 Statyka i dynamika. Nowy Jork: McGraw-Hill. Strona 348</li>
	<li>Meriam, J.L., Kraige, L.G. i Bolton, J.N. (2020). Mechanika inżynierska \u2012 Statyka. Hoboken, New Jersey: John Wiley. Strona 200</li>
</ol>

maszyny: rozwiązywanie problemów i

Docisk to mechaniczne urządzenie powszechnie stosowane do trzymania i zaciskania przedmiotów w różnych zastosowaniach, takich jak stolarstwo, obróbka metali i operacje montażowe. Rozważmy docisk poddany sile 200 N przy uchwycie. Siłę ściskającą w pionie można obliczyć, pod warunkiem że znane są wymiary docisku.

System docisku jest strukturą maszyny składającą się z przesuwanych elementów, połączonych za pomocą łączników, które tworzą ustabilizowany system do przekazywania sił. Człon CD jest dwusilnikowym członem, co oznacza, że działające na obu końcach siły kolinearne są równe wartościom, ale przeciwnego kierunku.

<img src="/files/ftp_upload/14294/14294_PT_Fig_1v2.svg" style="text-align: center; height: 350px;" />

Diagram sił dla sekcji BCF jest analizowany w celu zbadania sił. Zastosowane jest równanie równowagi momentu do przegubu B.

<img alt="Figure 1" src="/files/ftp_upload/14294/14294_PT_Equation_1v2.svg" style="text-align: center; height: 13px;" />

Wynik daje siłę wzdłuż członu CD jako 2185.64 N. Podstawiając wartość siły wzdłuż członu CD w równaniu równowagi siły poziomej, siła Bx wynosi 1092.82 N.

<img alt="Equation 2" src="/files/ftp_upload/14294/14294_PT_Equation_2v2.svg" style="text-align: center; height: 13px;" />

Rozważając diagram sił dla sekcji EBA, zastosowane jest równanie równowagi momentu w stawie A.

<img alt="Equation 3" src="/files/ftp_upload/14294/14294_PT_Equation_3v2.svg" style="text-align: center; height: 13px;" />

Podstawiając wartość poziomej siły reakcyjnej w B do równania równowagi momentu, oblicza się wartość siły ściskającej w pionie w punkcie E jako 728.55 N.

Maszyny: Rozwiązywanie problemów I

Docisk szybkomocujący to urządzenie mechaniczne powszechnie używane do przytrzymywania i mocowania przedmiotów w różnych zastosowaniach, takich jak obróbka drewna, obróbka metali i ...

Education

JoVE Core

Mechanical Engineering

Inżynieria mechaniczna

Unit 1

Jednostka 1

Structural Analysis

Analiza strukturalna

KEY TERMS AND CONCEPTS

Kluczowe terminy i pojęcia

Machines: Problem Solving I

toggle clamp force analysis

A toggle clamp can be analyzed to find its clamping force from a known handle force. In this example, a 200 N force is applied at the handle. The clamp is used in holding and clamping tasks in woodworking, metalworking, and assembly operations.

The toggle clamp is a machine structure made of movable, pin-connected multi-force members. These members form a stabilized system that transmits force. Member CD is a two-force member, which means the forces at its ends are equal in magnitude and opposite in direction.

To solve the force problem, a free-body diagram is drawn for section BCF. The moment equilibrium condition is applied about pivot pin B. This gives the force along member CD as 2185.64 N. That value is then used in the horizontal force equilibrium equation to find the horizontal reaction at B, Bx = 1092.82 N.

A second free-body diagram is then taken for section EBA. The moment equilibrium condition is applied at joint A. Using the horizontal reaction force at B, the vertical clamping force at point E is found to be 728.55 N.

Toggle Clamp Force Analysis

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machines: problem solving i

A toggle clamp can be analyzed to find its clamping force from a known handle force. In this example, a 200 N force is applied at the handle. The clamp is used in holding and clamping tasks in woodworking, metalworking, and assembly operations. The toggle clamp is a machine structure made of movable, pin-connected multi-force members. These members form a stabilized system that transmits force. Member CD is a two-force member, which means the forces at its ends are equal in magnitude and...

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key terms and concepts

Learn how a toggle clamp uses free-body diagrams and equilibrium equations to turn a 200 N handle force into a 728.55 N clamping force.

Toggle Clamp Force Analysis | JoVE K12

JoVE Core Mechanical Engineering offers concise, easy-to-understand animated videos covering key topics such as equilibrium, forces, truss analysis, and structural mechanics. Explore their real-world applications, and witness these concepts in action through scientist-led experiments.

mechanical engineering

Toggle Clamp Force Analysis

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