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To explore different types of motion and mechanical linkages, we've built a simple rotational-to-linear motion assembly using DIY components.
As the disc rotates, the offset joint traces a circular path, causing the rod to move back and forth in a straight line. This converts the rotary motion of the motor into reciprocating linear motion.
Such mechanisms are commonly used in actuators, piston systems, and oscillators demonstrating a fundamental concept in mechanical engineering and automation.
This model is ideal for classroom demonstrations, DIY robotics, and learning about kinematics, crank-slider systems, and motion transformation.
Step 1: A plastic disc is attached to geared DC motor & a fish-eye bearing is connected to the disc at an offset point.
Step 1: A plastic disc is attached to geared DC motor & a fish-eye bearing is connected to the disc at an offset point.
Step 2: A small threaded rod with another set of fish-eye bearing is connected to one end of steel rod.
Step 2: A small threaded rod with another set of fish-eye bearing is connected to one end of steel rod.
Step 3: the steel rod slides through a linear ball bearing for smooth linear motion.
Step 3: the steel rod slides through a linear ball bearing for smooth linear motion.
Step 4: The complete assembly has only 2 movable points.
Step 4: The complete assembly has only 2 movable points.
As the disc rotates, the offset joint traces a circular path, causing the rod to move back and forth in a straight line.
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