Week 8:- 3D Finishing Challenge 2

Aim/ Introduction:

Perform 3D finish for all units of assembly design. Create rough locators for assembly.

Theory:

3D Finish

3D finish is a process where the design is being completely finish & to be ready for final simulation & 2D detailing.

Following points are taken into consideration while finishing the design

• Hole concentricity & hole sizes

All parts holes concentricity & holes sizes are checked for easy assembly while finishing the parts.

• Machining area.

The machining area in every part should be defined & the machining area should be highlighted by using standard color code. Machining is to be done on parts to properly mount with mating parts. Machining only on desired faces reduces cost & save time also machining increases accuracy of dimension. So before going to simulation or detailing machining area should be defined.

• Nominality

All units dimension should be maintained nominal to facilitate easy assembly of the unit.

• Holes coloring standard

In 3D finish holes coloring should be done because it helps to identify what type of hole it is? It depends on customer standard. Customer specifies color like

• Pneumatic lay-outing

Pneumatic layouting is collection of different pneumatic pipes which work as a inlet to the pneumatic cylinder. It should be done properly for proper functioning of the units.

• Gaps checking:

The gaps between the different units checked to ensure the proper individual working of different units.

• Fasteners implementation

Fasteners should be implemented in all units as per the requirement & load on the part

• Avoiding clash between different parts

Proper gap should be maintained between units to avoid the clash between the different units.

• Mylar splitting as per panel profile

Mylar splitting as per panel profile should be confirmed while finishing the design.

• Proper renaming of parts/ assemblies as per the standard

Proper renaming of parts & assemblies should be done while finishing the design hence we can identify each & every part easily with unique identification.

1. Fixture assembly (P001_Z01_ST006_00_00)

• Renaming & structuring of the design tree.

2. Base unit (P001_Z01_ST006_15_00_BASE_UNIT).

Checking parameter	Action
Renaming & structuring of design tree	Done
Nominality of holes	Done
Hole colouring standard	Done
Machined area	Marked

• Renaming & structuring of the design tree.

• Nominality of holes:

• Hole colouring standard:

Dowel holes - Blue color.

Threaded holes – Yellow colour.

C. bore or simple holes - Cyan green colour.

Machined surface – Cream colour.

• Machined area:

• Rough locator Design:

Rough locators are usually used in loading & unloading of particular part. Rough locator unit is apart designed to guide the operator to locate car panel on the pins accordingly. They have slot for adjustment.

Fundamentals of rough locator design

• Rough locators should be placed at the edges of car panel, which it has to guide using locating pins one can easily restrict movement of entire car panel.

• Rough locator has to be placed in the same angle of the car part edge with minimum distance of 2.5 mm from the edge of car part, so it should no damage panel.

• Rough locators should guide the panel before 10 to 15 mm. to the start of the pin engagement.
• Rough locator should be designed with entry angle for the car panel. Generally it ranges between 30-45 degree.

• Rough locators should guide the panel in pin arresting direction in general.

• Rough locators should be designed with two slots to mount for easy adjustment. (In general). The slot should be in the direction of car panel guiding.

3. Swivel clamp unit (P001_Z01_ST006_01_00_SWIVEL_CLAMP_UNIT)

Checking parameter	Action
Renaming & structuring of design tree	Done
Nominality of holes	Done
Concentricity of all holes	Checked
Hole colouring standard	Done
Mylar splitting as per panel profile	Done
Butting of parts to each other	Done
Machined area	Marked

• Renaming & structuring of design tree.

• Nominality of holes: All hole co-ordinate made nominal as shown in below figure.

• Concentricity of all holes & hole colouring standard

All mating part hole made concentric to each other as shown in below figure.

Dowel holes - Blue color.

Threaded holes – Yellow colour.

C. bore or simple holes - Cyan green colour.

Machined surface – Cream colour.

Relief surface – Red colour.

• Mylar splitting as per panel profile.

• Butting of parts to each other: All parts are properly butt to each other.

• Machined area marking

All machined area & relief area marked.

• Clash/ interference checking:

It is necessary to check clash between parts to ensure proper individual working. At such places gap has to be checked by taking dynamic section as shown in below figure.

4. Pin clamp unit (P001_Z01_ST006_03_00_PIN_CLAMP_UNIT)

Checking parameter	Action
Renaming & structuring of design tree	Done
Nominality of holes	Done
Concentricity of all holes	Checked
Hole colouring standard	Done
Mylar splitting as per panel profile	Done
Machined area	Marked

• Renaming & structuring of design tree.

• Nominality of holes: All hole co-ordinate made nominal.

• All mating part hole made concentric to each other & hole coloured as per standard.

Dowel holes - Blue color.

Threaded holes – Yellow colour

C. bore or simple holes - Cyan green colour.

Machined surface – Cream colour.

Relief surface – Red colour.

• Mylar splitting as per panel profile.

• Butting of parts to each other: All parts are properly butt to each other.

All shims are properly butt with mylar.

• Machined area: All machined are marked by cream colour & relief area marked by red colour.

5. Fixed pin unit (P001_Z01_ST006_04_00_FIXED_PIN_UNIT).

Checking parameter	Action
Renaming & structuring of design tree	Done
Nominality of holes	Done
Concentricity of all holes	Checked
Hole colouring standard	Done
Machined area	Marked

• Renaming & structuring of design tree.

• Nominality of holes: All holes co-ordinate made nominal.

• All mating part hole made concentric to each other & hole coloured as per standard.

Dowel holes - Blue color.

Threaded holes – Yellow colour.

C. bore or simple holes - Cyan green colour.

Machined surface – Cream colour.

Relief surface – Red colour.

• Butting of parts to each other: All parts are properly butt to each other.

• Machined area: All machined are marked by cream colour & relief area marked by red colour.

6. Retractable pin unit (P001_Z01_ST006_08_00_RETRACTABLE_PIN_UNIT).

Checking parameter	Action
Renaming & structuring of design tree	Done
Nominality of holes	Done
Concentricity of all holes	Checked
Hole colouring standard	Done
Machined area	Marked

• Renaming & structuring of design tree.

• Nominality of holes: All hole co-ordinate made nominal.

• All mating part hole made concentric to each other & hole coloured as per standard.

Dowel holes - Blue color.

Threaded holes – Yellow colour.

C. bore or simple holes - Cyan green colour.

Machined surface – Cream colour.

Relief surface – Red colour.

• Butting of parts to each other: All parts are properly butt to each other.

• Machined area: All machined are marked by cream colour & relief area marked by red colour.

7. Rest unit (P001_Z01_ST006_07_00_REST_UNIT).

Checking parameter	Action
Renaming & structuring of design tree	Done
Nominality of holes	Done
Concentricity of all holes	Checked
Hole colouring standard	Done
Mylar splitting as per panel profile	Done
Machined area	Marked

• Renaming & structuring of design tree.

• Nominality of holes: All hole co-ordinate made nominal.

• All mating part hole made concentric to each other & hole coloured as per standard.

Dowel holes - Blue color.

Threaded holes – Yellow colour.

C. bore or simple holes - Cyan green colour.

Machined surface – Cream colour.

Relief surface – Red colour.

• Mylar splitting as per panel profile.

• Butting of parts to each other: All parts are properly butt to each other.

• Machined area: All machined surfaces are marked by cream colour & relief area marked by red colour.