This is what planned

Model made using solidworks. Rendering done using blender.

Files for download

What is achieved

A chair with all snap joints

Created model and assembly using solidworks
What is different this time?

This time I have created all models in assembly mode. It helps to visualise fittings of all models

Creation of reference place

Back rest which is not exactly on single plane. But its drawn on reference plane derived from two lines as shown in image

Rough assembly model created

This assembly is created for visualisations. Then I have deleted this assembly keeping part models intact

Final sub assembly is split into different sub assemblies to form final assembly which is a combination of sub assemblies

Why?

  • Simply its clean and makes it more managable
  • It groups mates. So you have less number of mates to manage
Side sub assembly
Final main assembly

Its a combination of three different assemblies and parts

Layout assembly

Here a plate of 5 feet x 5 feet is created and component is placed. Using this method we can create layouts in solidworks assembly

Created drawing file and then exported to dxf

Direct exporting assembly model to dxf seems not available in solidworks. Whereas in part mode it is available. Hence I have created Drawing file (.SLDDRW) then exported it to dxf from drawing file

CNC router

Its canadian make router with following specifications

  • Bed size : 5 feet x 8 feet
  • Spindle power : 27 KW
  • Spindle Max Speed : 25000 RPM
  • Cam Software : Artcam
Collet chuck for holding Drill
Drill bit loaded and ready to take Z zero reference
Machine moves down and takes reference
Measure start height. It is the maximum height from where cutting will start
Using artcam for creating tool path for CNC router

Following are settings for CNC program

  • Spindle RPM : 18000
  • Depth of cut in single path : 9.5 mm
  • Feed rate : 2500 mm/min
  • Cutter diameter : 6 mm (Side cutting endmill)
  • Drill diameter : 4 mm
Artcam screenshot
Drilling pass done which has created relief drills wherever required
Endmill dia 6 mm
Side cutting endmill which can plunge and traverse to remove material
Cutting completed
Components removed for doing assembly

Assembly sequence

All of the above cut components are assembled in a sequence as shwon below

Following correct assembly sequence and planning for it at design stage is very crucial. This will prevent us from designing something which we cannot assemble

Creating middle assembly

Finally