ASSIGNMENT

 

1. To make something Big

 

 

 

 

Designing

 

For this week, I thought of making some furniture like table or stool. Round seating stool was what I liked from the net references so designed something on similar lines using Rhino balancing weight and structure. he stool is design with simple round seat with a cross at the centre of pressfit the stool stand

 

Material -  Plywood from campus was used to create the stool designed by me exploiting the available resources.

 

 

These are the exploration for the form that I worked out in rhino modeling.

 

 

Autodesk ArtCAM

 

ArtCAM is a single solution for designing and making in the woodworking industry. Its simple interface and

easy to use tools allows hobbyists and independent designers to produce high quality decorative woodwork.

 

 

A sacrificial board was layed on the machine bed before starting the process of machining. This board acts as barrier incase of some settings done incorrectly

Using G clamps the plywood sheet was clamped to start the work  at  9 points on the sheet to prevent any part from getting raised

Z Zeroing

 

- The machine has to be aware about the Zero position, before we start the cutting. - Also we must know, what's the position of the tool with respect to material thickness - How much depth it has to reach for cutting/engraving. - When I gave a command for zeroing the Z, the software makes the tool to go and touch the plywood. I used a paper sheet between the tool and the plywood and made sure that the bit touched the plywood.

 

Machine controls

 

I used an end mill 6mm which is a type of milling cutter, a cutting tool used in industrial milling applications

The dimension of the plywood is 3 ft* 4.5 ft

Thickness  of the plywood used is 10mm

 

Z Zeroing

 

1) The machine has to be aware about the Zero position, before we start the cutting.

2) Also we must know, what's the position of the tool with respect to material thickness.

3) How much depth it has to reach for cutting/engraving.

4) When I gave a command for zeroing the Z, the software makes the tool to go and touch the plywood.

5) I used a paper sheet between the tool and the plywood and made sure that the bit touched the plywood.

 

Software used : Autodesk Artcam 2017

 

I imported the files (dxf format)

 

 

 

- Select: Create tool path "T"

 

- Select Outside for outer profile and inside for slots

 

- Finish depth must be as per thickness of the sheet i.e 10mm

 

- Select end mill 6mm tool from the library

 

- Select calculate now

 

- Format of the tool path file is Model Master 3 axis flat (*.mmg)

 

- Save the tool path

 

- Select the file in the pendrive

 

- Choose the stroke (outer, inner, on contour)

 

- Select the layer to take vector primitives; to make different trajectories, I put the details on different layers

 

- Choose the cut depth (Thickness of the plywood I used it was 10 mm)

 

- Choose the type of tool, it's diameter and other parameters, like feed for example

 

- Chose the way the tool will get into material. It can get down vertically, or be moving on it's trajectory at the same time.

 

- At last we can push the button "Calculate now". The trajectory for the tool will be made.

 

- After that I selected "trajectories" -> "save trajectory as" from the upper menu. Set the origin and tighten the screws to lock the plywood on the CNC bed.