Record and recall information with consistency and speed. The use of Product Data Management (PDM) systems can store the whole design and processing history of a certain product, for future reuse and upgrade.
COVENTIONAL Vs MODERN DESIGN PROCESS
DESIGN PRODUCT CYCLE & CAD/CAM PROCESS:
INTRODUCTION TO CATIA V5
CATIA (an acronym of computer aided three-dimensional interactive application) developed by the French company Dassault Systèmes.
CATIA INTERFACE(GUI)
SPECIFICATION TREE
MOUSE CONTROLS
VIEW TOOLBAR
OTHER COMMONLY USED TOOLS:
Part design environment is used to create 3D models from the basic 2D sketches created in sketcher environment.
Some of the commands in workbench explained below
PAD command
In most CAD software, the equivalent of this is called EXTRUDE, but in CATIA we call it PAD. This command adds material in the third direction, a direction other than the sketch.
POCKET command
The POCKET commands somehow the opposite of PAD command. It simply helps remove geometry belonging to an already create part. On the figure below the POCKET command is helping to create the cylinder hole in the middle of the cube.
SHAFT command
It is Like revolve command in other CAD software, the SHAFT command is mostly used to make shaft like parts. It requires an axis, around which the sketch will be revolved.
RIB command
This command which is usually known as SWEEP is called RIB IN CATIA. It adds material along a guide curve. RIB is used to make components like springs, pipes etc.
SLOT command
SLOT removes the material along a guide curve. Here is an example of slot. While using SLOT, I have used the same guide curve that was used for RIB. This ensures that the cross section will be uniform throughout.
Drafting is a process of generating 2D machine drawing for the 3D part models to send it to the manufacturer" s.<="" p="">
Catia drafting is of two types
1.Interactive Drafting
2. Generative Drafting
- Slot Definition (PD)
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Goal: to create thickness in the cutting edges of the drill bit
First project the entire bottom surface then make a drawing at the bottom of the drill bit (2 Circles: 1st one 20mm dia, 2nd one)
Note: The outer 20mm circle may need to be made into a reference sketch - double click the circle and select reference and the constraint will switch from purple to green
Preparing for the Slot
Use the eraser tool to cut the edges into the shape that is shown (see sketch.4 thickness of bit edges)
Once the sketch is completed, use slot definition to completed the thickness...
select profile - right click and select profile definition, then sub-elements, then select outer edge (after selection is made - 'complex' will be shown in the text box)
Note: If you try choose 'whole geometry' and select 'sketch.4 Thickness of bit edges' you will get errors
Note: You may need to select the opposing outer edge if you notice an 'odd cut out' near the top of the cylinder. (We will need to create an opposite curve in the future to create the slot for the opposing edge - 180deg opposite the first one)*
Center Curve - select curve.1
Profile Control - Pulling Direction
Selection - pad.1Axis.6 (center axis of pad.1)
*Creating Curve.2
copy and paste curve.1 into geo.1
Rotate 180deg using the rotate def. (RSD)
Note: Make sure Rotate.3 is in 'Geo.1' - not 'geometric set.1'
If you see rotate.3 in 'geometric set.1', drag it to 'geo.1'
Repeat the slot for the opposite side
Note: In profile you will have to select the 'inner edge' this time - not the 'outer edge' as in the first slot