Scissor mechanism 2

Compare two scissor mechanisms
The right one is an ordinary scissor mechanism of three identical large rhombi.
The left one is a special scissor mechanism of two large rhombi and one small rhombus.
Length of violet bars: a
Length of pink bars: a + 2a
Length of blue bars: 2a + 2a
Length of green bars: 2a
Red identical cams give orange sliders the same displacement S.
- Left mechanism: displacement of the brown roller L1:
L1 = S + 2.n.S
n: number of large rhombi created by the bars.
Here n = 2, so L1 = 5.S
- Right mechanism: displacement of the brown roller L2:
L2 = n.S
Here n = 3, so L1 = 3.S
L1 is larger than L2
STEP files of this video:
www.mediafire.c...
Inventor files:
www.mediafire.c...

[@arrabayobachkar3156]

your mechanic is good for my mind

[@arrabayobachkar3156]

thang thank you very much you are my friend you help me always

[@3MrP3]

Very interesting! Do you need more torque/energy in order to fully open the left mechanism? If yes, is it because of the different sized rhombi?

[@thang010146]

No. The torque applied to the cam shaft causes vertical force F1 applied to the lower roller.
F1 depends only to vertical force (load) applied to the upper roller F2.
F1.S1 = F2.S2
S1: displacement of the lower roller.
S2: displacement of the upper roller.

[@3MrP3]

Thank you!

[@arrabayobachkar3156]

i always advice my god to help you i am a moroccan inventor

[@isaacsanchez8485]

Amazing. Any books that you would recommend that have helped you in design and engineering process?

[@thang010146]

The mechanisms in my channel are built up mostly based on following books:
a. С. Н. Кожевников и другие, Механизмы, Москва, 1965, 1060 стр.
b. I. Artobolevski, Mechanisms in modern technic, Moscow, 1977, 7 vol.
c. Sclater & Chironis, Mechanisms And Mechanical Devices Sourcebook, 2001, 485 p.
d. Henry T. Brown, 507 Mechanical Movements, New York, 1908,122 p.
e. А. Ф. Крайнев. Словарь Справочник по Механизмам, Москва, 1987, 561 стр.

[@Zooofa0610]

@@thang010146 👍

[@CHAKRAPANI203]

Nice

[@kausthubhtsr9636]

Sir , What is the name of that "red part" (the gear)?

[@thang010146]

It is a disk cam.

[@kausthubhtsr9636]

thang010146 oh! thanks a lot Sir.

[@TheJttv]

what do you use to design and animate these?

[@thang010146]

Autodesk Inventor.

[@TheJttv]

ah nice. I learned CAD on Autodesk Inventor however I predominantly use SolidWorks now.

[@user-lm4gd1cn5v]

What is the name of this program

[@thang010146]

It is Autodesk Inventor.

[@ALAAAJAJvideo]

good Job

[@sandreenabani5447]

how to make it ?

[@thang010146]

The mechanism was built and animated in Autodesk Inventor.