The mechanical drawing machine is an automatic drawing table, created to mechanically make a physical interpretation of a computer drawing. It is implemented using a custom built Computer Numerically Controlled (CNC) system, with the g-code programming language and a g-code interpreter acting as the intermediary between the computer drawing and its physical manifestation. The table has 3 axes of motion was created, with interchangeable paintbrushes and multiple opacities of black ink. A multi-step process is the basis for the design: a drawing is created as a DXF file, and the lines are converted into g-code through a conversion application; this g-code maps geometric coordinates for the pathways that the brush will eventually follow. After running the code through a post-processing application to embed subroutines that allow for brush dipping, the modified g-code is uploaded into the g-code interpreter LinuxCNC, and translated onto the table into a physical recreation of the original drawing.
Figure1: Table in use
•Create a painting table
•Ability to use change brushes
•Ability to paint with different ink opacity
•Convert the Artist digital drawing file to a painting
•Ability to dip and remove excess paint on brush
•Ability to re-dip when brush is out of ink
The working prototype was
designed, fabricated, and assembled in 9 weeks.
The prototype allows for
movement in 3-axis movement allowing it to virtually position the drawing head
anywhere inside the area of table. These movements are each controlled by the
mother board through three stepper motors, as well as the associated limit
switches and solenoid.
Control and Signal System
Drawing Table, we hope to inspire others that engineering can be used to
entertain and as well as to open a different spectrum where mechatronics can be
implemented in. It's combination of engineering and art is to encourage
different level of art and also to show viewers that math, physics and
engineering can be creative and innovating. The combination of art and
engineering is becoming more of an interest towards society of how engineering
can create, learn, and understand different
pieces of art.