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LIBRECAD CONSTRAINTS SOFTWARE

LIBRECAD CONSTRAINTS SOFTWARE

3 Software for sending G-code to the printer.

1.3.3 Autodesk Inventor (Student Version).

These are links to the in LibreCAD Parametric design This time I made the same piece as before but I used FreeCAD in order to create a parametrized piece. To avoid a lot of work, I moved the press-fit designs with the center of the piece and a circle as guides. Since LibreCAD is not parametric, I had to change the dimensions. Copied the press-fit by rotating the angle. Drew lines that passed through the center of the figure by way of the angle (360 degrees divided by 3) and the centers of the future joining sides. Drew a line that defines the depth of the press-fit. Then drew 2 parallel lines at both sides at the same distance of the width of the material (4,65 mm). Cut the circles and then trimmed the outer sides of the circles.ĭrew a perpendicular through the middle of one of the future joining sides. Trimmed the sides of the lines on the point of intersection with the circles. Drew a triangle between the centers of the circles. Drew a third circle with 2 points and same radius.ĭrew internal circles with a small displacement which will be half the length of the future joining sides. I used the following procedure with LibreCAD: Circle and tangent 2 circles on 1 tangent Removing the tangent line.

Non-parametric design I designed the piece to assemble with press-fit thickness of 4,65 mm. These are the links to the and in LibreCAD. I cut another wood piece with notches of: 4,75 mm, 4,70 mm, 4,65 mm, 4,60 mm kaj 4,55 mm. I cut the wood with notches of different thicknesses: 5,2 mm, 5,1 mm, 5,0 mm, 4,9 mm kaj 4,8 mm. It could be caused by the direction of the wood fibers. The error is 0,03 mm in one direction and 0,26 mm in the other. Mesurement with caliper This tells us that the first time it was more precise. I tested with higher speed (10 mm/s) at 75% power. With this design I cut a wooden square of 5 mm thickness. This link provides the above in LibreCAD. The process I followed on LibreCAD for designing the gauge piece was by drawing orthogonal vertical and horizontal lines as follows. It has different press-fiting gauge cuts for determining the width of the cut according to the thickness of the material.

controlling the conditions of cutting Gauge I designed a piece on LibreCAD.

LASER power It must not start up without previously:.

Light Optional in order to see the cutting process.

That prevents firing up the cut material with the machine.

Pump Removes the air from the zone that contacts the LASER.

Extractor Extracts the gases outside of the room.

Cooler It cools the LASER with water that circulates.

So it must be used with an exact startup procedure. In this nice bar we have also horizontal and vertical constraints and the zero. TUTORIAL Drawing a little mechanical part using LibreCAD Tutorial by Claudio. The light reflects on CO 2 gas and shoots in a beam of parallel rays. The machine has a long tube that shoots light. The cutting machine works with a CO 2 LASER (Light Accumulation by Stimulated Emission Rays). LASER cutting Technology I have learned cutting by control of the computer. Computer controlled cutting can be also be achieved with the CNC mill as described in the and the image shown below. Computer-controlled cutting can make 2D pieces in order to construct 2D objects or or for integrating them and making 3D objects as can be seen on this skull.

I will also detail how and what interfaces I used for connecting the cutting machine to my computer. The press-fit pieces process is described. I will hereby, describe the software used to design and how I calibrated these machines and cut these pieces. Quiliro's Assignment: Computer controlled cutting Computer Controlled Cutting This assignment will lead us through computer-controlled cutting with a LASER machine and a vinyl cutter.