Creo Tutorials > Creo Mold Machining Extension Tutorial > Exercise 2: Working with High-Speed Milling Parameters > Working with Rough and Rest Rough Parameters
  
Working with Rough and Rest Rough Parameters
Watch the video that shows you how to work with Rough and Rest Rough parameters. This tutorial is a step-by-step guide on how to create HSM Rough and Rest Rough sequences.
Working with Scan and Cut Type Parameters
1. Open the MFG0001.ASM assembly.
2. On the Model Tree, click the sequence CONSTANT_LOAD and then click to edit the definition. The HSM Rough tab opens.
3. Click and select SF30_R1_ISO50 tool with cutter diameter of 20 mm.
4. On the References tab, click the Mill window collector and on the Model Tree, select Mill Window 1.
5. On the Parameters tab, the parameters are populated automatically, based on the tool diameter. To optimize the toolpath, set values as shown for the following parameters:
SCAN_TYPE = CONSTANT_LOAD
CUT_TYPE = CLIMB
ROUGH_OPTION = ROUGH_ONLY
ROUGH_STOCK_ALLOW = 1
BOTTOM_STOCK_ALLOW = 1
MAX_STEP_DEPTH = 5
CLOSED_AREA_ENTRY = HELICAL
RAMP_ANGLE = 15
PULLOUT_DIST = 5
HELICAL_DIAMETER_PERC = 50
6. Click the arrow next to and then click . The Material Removal tab opens.
7. Click to open the Play Simulation dialog box.
8. Click to play simulation.
9. On the Material Removal tab, click and then on the HSM Rough tab, click OK to complete the sequence.
10. On the Model Tree, click the sequence TYPE_SPIRAL and then click to edit the definition. The HSM Rough tab opens.
11. On the Parameters tab, set values as shown for the following parameters and then repeat steps 6–9:
SCAN_TYPE = TYPE_SPIRAL
CUT_TYPE = UPCUT
ROUGH_OPTION = ROUGH_ONLY
CLOSED_AREA_ENTRY = AUTOMATIC
PULLOUT_DIST = 5
12. On the Model Tree, click the sequence TYPE_1 and then click to edit the definition. The HSM Rough tab opens.
13. On the Parameters tab, set values as shown for the following parameters and then repeat steps 6–9:
SCAN_TYPE = TYPE_1
CUT_TYPE = ZIG_ZAG
ROUGH_OPTION = ROUGH_AND_PROF
CLOSED_AREA_ENTRY = RADIAL
PULLOUT_DIST = 5
Working with Other Roughing Parameters
1. On the Model Tree, click the sequence CONSTANT_LOAD and then click to edit the definition. The HSM Rough tab opens.
2. On the Parameters tab, the parameters are populated automatically, based on the tool diameter. To optimize the toolpath, set values as shown for the following parameters:
NUMBER_INTERMEDIATE_SLICES = 2
INTERMEDIATE_SLICE_ADJUST = AFTER
MAX_STEP_DEPTH = 15
3. Click the arrow next to and then click . The Material Removal tab opens.
4. Click to open the Play Simulation dialog box.
5. Click to play simulation.
6. On the Material Removal tab, click .
7. On the Parameters tab, set values as shown for the following parameters and then repeat steps 3–6:
NUMBER_INTERMEDIATE_SLICES = 0
START_HEIGHT = 60
END_HEIGHT = 25
MAX_STEP_DEPTH = 5
8. On the Parameters tab, set values as shown for the following parameters and then repeat steps 3–6:
ALLOW_ENTRY_OUTSIDE = NO
RAMP_ANGLE = 5
CLOSED_AREA_ENTRY = HELICAL
HELICAL_DIAMETER_PERC = 30
9. Click OK to complete the sequence.
10. On the Model Tree, click Mill window 1 and then click to edit the definition. The Mill Window tab opens.
11. On the Options tab, select Inside window contour and click OK.
12. On the Model Tree, click the sequence CONSTANT_LOAD and then click to open the PLAY PATH dialog box.
13. Click to play simulation.
14. On the Model Tree, click Mill window 1 and then click to edit the definition. The Mill Window tab opens.
15. On the Options tab, select Outside window contour and click OK.
16. On the Model Tree, click the sequence CONSTANT_LOAD and then click to open the PLAY PATH dialog box.
17. Click to play simulation.
18. On the Model Tree, click the sequence TYPE_SPIRAL and then click to edit the definition. The HSM Rough tab opens.
19. On the Parameters tab, set values as shown for the following parameters and then repeat steps 3–6:
STEP_OVER = 28
REMOVE_CORNER_PEGS = YES
1. REMOVE_CORNER_PEGS is set to NO.
2. REMOVE_CORNER_PEGS is set to YES.
20. On the References tab, click the Mill window collector and on the Model Tree, select Mill Window 3.
21. On the Parameters tab, set values as shown for the following parameter and then repeat steps 3–6:
BOTTOM_STOCK_ALLOW = 0
MAX_STEP_DEPTH = 8
MACHINE_FLATLANDS = NO
1. MACHINE_FLATLANDS is set to YES.
2. MACHINE_FLATLANDS is set to NO.
22. On the Parameters tab, set values as shown for the following parameters and then repeat steps 3–6:
MACHINE_FLATLANDS = YES
MINIMUM_WIDTH = 8
MAX_STEP_DEPTH = 5
1. MINIMUM_WIDTH is set to 1.
2. MINIMUM_WIDTH is set to 8. When the MINIMUM_WIDTH is set to 8 the last pass is omitted.
Working with Rest Roughing Options
In the following steps, you will work with parameters that are unique to Rest Roughing.
1. On the Model Tree, click the sequence RE_ROUGH_PREV_TOOL and then click to edit the definition. The HSM Rest Rough tab opens.
2. Click and select SF16_R1_ISO50 tool with a cutter diameter of 16 mm.
On the References tab, the Reference Cutting Tool automatically collects the previously used tool SF30_R1_ISO50.
3. On the Parameters tab, the parameters are populated automatically, based on the tool diameter. To optimize the toolpath, set values as shown for the following parameters:
STEP_OVER = 8
MAX_STEP_DEPTH = 5
ROUGH_STOCK_ALLOW = 1
BOTTOM_ROUGH_STOCK_ALLOW = 1
PREVIOUS_ROUGH_STOCK_ALLOW = 1
PREVIOUS_BOTTOM_STOCK_ALLOW = 1
4. Click arrow next to and then click . The Material Removal tab opens.
5. On the Material Removal tab, click Stock Model > Open In-Process Stock. The Load stock dialog box opens.
6. Select rough.bin and click Open.
7. Click to open the Play Simulation dialog box.
8. Click to play simulation.
 
* When you use a previous tool to calculate the tool path, limitations, such as tool length and holder geometry affect the rest roughing sequence. In such scenarios, you can generate more accurate tool paths by using the previous stock.
9. On the Material Removal tab, click and then on the HSM Rest Rough tab, click OK.
10. On the Model Tree, click the sequence RE_ROUGH_PREV_STOCK and then click to edit the definition. The HSM Rest Rough tab opens.
11. On the References tab, click the Mill window collector and on the Model Tree, select Mill Window 1.
12. On the References tab, in the Rough Stock File collector, click to import the rough stock file. The Open dialog box opens.
13. Select rough.stl and click Open.
14. On the Parameters tab
, click . The Select Step dialog box opens. The RE_ROUGH_PREV_TOOL sequence is selected.
15. Click OK to copy parameters and repeat steps 4–9.