ShopReady Draft 2D · 1:30 · narrated, with captions

A geared trip hammer, part 4 of 7: A pin, a motor, and the first run

The drawing is made to move. The cam wheel and its gear become one assembly, the hammer is pinned at its pivot and dropped by its own weight with LET GO, and a right-click on the small gear gives the train its motor. The program sees that, the way it is set, a peg would run into the hammer, and waits for Play; set to clockwise, the Motion window lists every gear's speed and the 9 to 1 ratio. On Play a peg pushes the tail down, and the head runs into the top beam: both turn red.

Before thisA geared trip hammer, part 3 of 7: The gear train NextA geared trip hammer, part 5 of 7: Check for hits, and room to work

This is one part of a longer film

Whole project · 8:17

A geared trip hammer: the whole project

A geared trip hammer built from a blank drawing in seven steps: a frame and a hammer from rectangles with typed sizes, a cam wheel made with Array and Weld, two pairs of gears placed on the meshing ring, a pin, a motor and a crank with a slide. It shows the ordinary drawing tools and snaps, the Gear tool, layers as heights, assemblies, the Motion window's joints, the gear train's table and ratio, parts pushing each other by touch alone, weight, Check for hits and the Clearance tool, Trace, Slow motion and Save a film. Nothing in the machine is scripted to move: the motor turns one gear and everything else follows from how the parts are drawn.

The rest of this project

Chapter · 1:08

A geared trip hammer, part 4 of 7: A pin, a motor, and the first run

This is one part of a longer film

A geared trip hammer: the whole project

The rest of this project

A geared trip hammer, part 1 of 7: The frame and the hammer

A geared trip hammer, part 2 of 7: The cam wheel

A geared trip hammer, part 3 of 7: The gear train

A geared trip hammer, part 5 of 7: Check for hits, and room to work

A geared trip hammer, part 6 of 7: A crank and a pump off the same train

A geared trip hammer, part 7 of 7: The head's path, a film, and the machine running