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1. To run an automated cell consisting of a lathe, a milling machine (miller), two robots, a vision system linked by a conveyor and an Automatic Storage and Retrieval System (ASRS).
2. To generate parts, process and routing schedules for the cell.
3. To dispatch schedules to the cell
and create virtual chess pieces.
INSTRUCTIONS
Follow the step by step instructions whilst carrying out the described actions on your computer. The Instructions will take you through the different programs that make up the Virtual Reality CIM suite, which represent the stages that are necessary for automated manufacturing.
These are :
Process Planning
Shop Floor Layout Design
Route Planning
Scheduling
Dispatching
Manufacturing
N.B. Robot programming is handled in the Virtual Reality Robot suite.
START THE VR LINKER
1. Click on START>Programs>Denford>Virtual Reality>Virtual Reality. You will see this screen:
2. Type in your Class or Name. Click on OK. Key in Your Password as Instructed by the Lecturer.
3. You will see this dialogue window:
Select FILE>Run Virtual World>CIM Level Room 4.
4. You will see a door. Click
on the Door to Enter.
5. You will see the machine cell.
6. Use viewpoints provided at the
top of VR window to switch to different views. Turn on the power
for the robots, CNC lathe, miller, vision system and robots by clicking
on their switches. Alternatively, select the Crafty Start Blob!!! viewpoint
and click it. This will power up all the machines, simultaneously.
You can manoeuvre yourself in the virtual world by using the arrow buttons
at the bottom of the window.
PROCESS PLANNER
1. At the VR Linker, Select FILE>Process
Planner. You will see the following editor:
2. Key in a Part Name "queen" and select "Milled Queen " from Virtual Components Available as follows:
3. Click on Save Part File.
4. Select Lathe, leave process time
as 120 seconds and Click on Save VR CNC File. Notice file is saved
in c:\CIM\Parts\queen_l.fnc.
5. Select Miller, leave process time as 140 seconds and Click on Save VR CNC File. Notice file is saved in c:\CIM\Parts\queen_m.fnc. Note : the Queen has to be machined in the lathe first, then sent to the miller.
6. Key in a new part called "Pawn". Change Process time to 20 seconds. Click on the lathe machine. Click Save Part File. Click Save VR CNC FIle. The file will be saved to c:\CIM\Parts\Pawn_l.fnc.
7. Click on Close.
8. Leave the
Virtual World Running In The Background
CONFIGURATOR -THE SHOP FLOOR LAYOUT DESIGNER
1. Select from the button START>Programs>Denford>Virtual Reality>Configurator
2. Click on the conveyor ICON. The following screen will appear:
3. By clicking on the conveyor track and the station buttons (if you make an error, select it with the pointer and press the erase button). Create the conveyor layout below:
4. Click OK. The cursor will turn into an oval shape and the screen will revert to the main display. Place the cursor in the centre of the screen and left click. The screen below will appear:
5. Insert a lathe, a miller, two robots, a vision system and an ASRS to complete the following layout. It is also necessary to insert a delay at station 5 to give the ASRS time to unload.
6. As each machine is inserted you will see the following dialogue box:
7. Select the correct name from the drop down box and repeat for each component when requested.
8. Make sure that the robot
work envelope is able to reach all machines. You
can do this by clicking on Robot1 and then using VIEW>Robot Reach.
Repeat the process for Robot2.
9. Select VIEW>Cell Structure. Check each cell by selecting from the cell list.
5. Select VIEW>Transport Network.
This will allow you to ensure that the components are linked by the transport
system and that the correct relationships between the components exist
If there is a break in the transport network, ensure that all machines
are close to the conveyor stations.
6. Save File as "room4.sfl" in c:\cim\layouts directory.
Route Planner
1. Select START>Programs>Denford>Virtual Reality>Route Planner
2. Select FILE>Load Shopfloor>room4.sfl.
3. Select FILE>Load Process Plan>queen.pp
5. Click on Bill of Process ICON.
6. Once you have clicked on the Bill of Process icon, the following screen will appear:
7. Save the file as "queen.rut" in c:\cim\parts directory.
8. Return to step 3. and repeat steps 3 - 7, loading the file "pawn.pp" process plan and save it as "pawn.rut" in c:\cim\parts. The bill of processes for the pawn will look like this:
9. Close the application.
Scheduler
1. Select START>Programs>Denford>Virtual Reality>Scheduler
2. Select FILE>New. Select "room4.sfl".
3. Click on "Part" and you will see
the screen below.
3. Select both "queen.rut" and "pawn.rut". Key in 3 parts of each. Set priority of 1 and 2 respectively. Your Order Entry Dialogue should look like this:
4. Click on OK. A schedule will
automatically be generated as shown:
5. Save File as "sched4.shd".
Dispatcher
1. Select START>Programs>Denford>Virtual Reality>Dispatcher
2. Select FILE>Open>sched4.shd.
3. You will see the following screen:
4. Return to the VR Linker.
The cell manager will automatically launch:
5. Return to the Dispatcher. Select the Connect ICON and make sure there is connection to all cells and components. Click on OK.
N.B. Do not touch the Connect button if the cells are connected.
6. At the VR Linker, select ASRS:
7. Then, click on the C button, below the device selector. This will launch the ASRS Control Panel.
8. Select File>Open and the dialogue below appears:
9. Click on chess.dat and click open. The inventory file will be loaded into the ASRS and will appear on the ASRS Control Panel:
N.B. Steps 6-9 must be completed or the schedule will not run.
10. On the Dispatcher toolbar, Click on
the Lightning ICON or Use EXECUTE>Start to dispatch schedule to the VR
World. The Schedule is dispatched to
the Machine Cell and the following schedule will be generated:
7. The Key Window can be viewed by selecting View>Key Window:
8. Minimize the Dispatcher to create more
room on the screen. The VR CIM Cell will begin to run automatically and
can be viewed in operation in the Virtual World Window.