Recent Blogs
Two-degree Cylindrical Pair
Two-degree cylindrical pair explained — kinematics, tolerances, and real applications in machine tools, hydraulics, and robotics. With formulas and a worked example.
Sliding-and-rotating Prism in Cylinder
Sliding-and-rotating prism in cylinder kinematic pair explained — how it constrains motion, where it shows up in machine design, and how to size the clearance...
Prismatic Pair
Prismatic Pair explained — the sliding lower-element joint behind every Linear Actuator, machine slide and hydraulic cylinder. Specs, formulas, real builds.
Wedge Cam
Wedge cam mechanism explained — how the inclined slider converts linear input into precise follower lift, with formulas, tolerances, and real machine examples.
Yoke-bar Reciprocator From Disk Crank
How a yoke-bar reciprocator from a disk crank converts rotation into pure linear motion — formulas, tolerances, and real industrial examples for design engineers.
Slotted Cross-head with Sliding Journal Box
Slotted cross-head with sliding journal box explained — how the slider-crank variant works, sizing formula, worked example, and real machine applications.
Double-rack Crank Substitute
Double-rack crank substitute explained — how paired racks and a pinion replace a crank to convert rotation to linear motion in presses, feeders, and shapers.
Reversible Pulley
Reversible Pulley explained — how the mechanism reverses output rotation, sizing formulas, real industrial examples, and tradeoffs for motion control builds.
Oscillating Column (form 2)
Oscillating Column form 2 explained — how the sliding-block linkage drives reciprocating motion in shapers, looms, and pump mechanisms. Engineering guide.
Reverse Motion Drive
Reverse Motion Drive explained — how the idler-gear or crossed-belt setup flips output direction, with worked numbers and real machine-shop applications.
Friction Gear
Friction Gear explained: how friction wheels transmit torque without teeth, where they're used in machine tools and presses, plus design formulas and tradeoffs.
Drag-link Quick-return
Drag-link quick-return mechanism explained — how the four-bar linkage produces unequal forward and return strokes for shapers, presses, and packaging machines.
Reciprocating Rectilinear Motion
Reciprocating Rectilinear Motion converts rotary input into back-and-forth linear travel. Learn the mechanism, formula, and real machine-shop applications.
Spline (mechanical)
Spline shafts transmit torque while allowing axial slide. Learn the geometry, formulas, and real applications in automotive, aerospace, and CNC machinery.
Sliding Contact Mechanism
Sliding Contact Mechanism explained — how sliding pairs transmit motion, real applications in CNC machines, presses, and engines, plus a worked sizing example.
Slider (mechanism)
How a slider mechanism works, where it fits in industry, plus a worked example with formulas, tradeoffs and FAQs from FIRGELLI engineers.
Mechanism (engineering)
Understand what a mechanism is in engineering — how kinematic links, joints and constraints turn input motion into useful output across machines, vehicles and tools.
Cam (mechanism)
How a Cam mechanism converts rotary motion into precise linear or oscillating motion — geometry, lift profiles, and real engine and machine examples.
Friction Pin Clutch
How a Friction Pin Clutch works in mill and factory drives — torque limits, slip behaviour, sizing math, and real shop-floor applications from punch presses...