The Entry and Exit Move Dialog Box
The Entry and Exit Move dialog box contains two group boxes:
• Entry and exit type—Lets you select standard strategies for entry and exit. You can specify different entry strategies for the first cut and the intermediate cuts, as well as different exit strategies for the intermediate cuts and the last cut.
• Custom strategies—Lets you define custom strategies for entry and exit.
Above the group boxes there are the Open and Save icons, for saving and retrieving your Entry and Exit strategies. The OK and Cancel buttons are located below the group boxes.
The Entry and exit type group box contains the following drop-down lists.
Under Cut entry move:
• First cut—Select an entry move type for the first cut (approach move). The options are:
◦ NONE—No entry move.
◦ CUSTOM_ENTRY—Enter using the custom strategies, specified in the Custom strategies group box for this cut type. If the Main strategy causes gouging, then the system uses the First alternate strategy, and so on. If all the custom strategies cause gouging, then no entry move is created.
◦ AUTOMATIC—The system automatically determines the entry move type based on the surrounding geometry of the feature being machined. The entry moves are automatically degouged. If the first selected move type gouges the part, the system tries the next logical move type. If all the move types gouge the part, then no entry move is created.
◦ LINE_TANGENT—The tool enters in a line tangent to the cut. The length of the line is defined by the APPROACH_DISTANCE parameter.
◦ HELIX—The tool enters along a helix. The geometry of the helix is defined by the HELICAL_DIAMETER and RAMP_ANGLE parameters.
◦ RAMP—The tool enters at an angle. The move is defined by the RAMP_ANGLE and CLEAR_DIST parameters.
◦ ARC_ENTRY—The tool enters along a horizontal arc tangent to the cut (that is, the arc is located in a plane parallel to the XY plane of the NC Sequence coordinate system). The radius of the arc is defined by the LEAD_RADIUS parameter. The angle of the arc is 180 degrees.
◦ ARC_TANGENT—The tool enters along a vertical arc tangent to the cut (that is, the arc is located in a plane tangent to the cut and normal to the XY plane of the NC Sequence coordinate system). The move is defined by the LEAD_RADIUS and ENTRY_ANGLE parameters.
◦ LEAD_IN—The tool leads into the cut. The move is defined by the TANGENT_LEAD_STEP, NORMAL_LEAD_STEP, LEAD_RADIUS, and ENTRY_ANGLE parameters.
• Each Cut—Select an entry move type for each intermediate cut. The options are:
◦ NONE—No entry move.
◦ CUSTOM_ENTRY—Enter using the custom strategies, specified in the Custom strategies group box for this cut type. If the Main strategy causes gouging, then the system uses the First alternate strategy, and so on. If all the custom strategies cause gouging, then no entry move is created.
◦ AUTOMATIC—The system automatically determines the entry move type based on the surrounding geometry of the feature being machined. The entry moves are automatically degouged. If the first selected move type gouges the part, the system tries the next logical move type. If all the move types gouge the part, then no entry move is created.
◦ LINE_TANGENT—The tool enters in a line tangent to the cut. The length of the line is defined by the APPROACH_DISTANCE parameter.
◦ HELIX—The tool enters along a helix. The geometry of the helix is defined by the HELICAL_DIAMETER and RAMP_ANGLE parameters.
◦ ARC_ENTRY—The tool enters along a horizontal arc tangent to the cut (that is, the arc is located in a plane parallel to the XY plane of the NC Sequence coordinate system). The radius of the arc is defined by the LEAD_RADIUS parameter. The angle of the arc is 180 degrees.
◦ ARC_TANGENT—The tool enters along a vertical arc tangent to the cut (that is, the arc is located in a plane tangent to the cut and normal to the XY plane of the NC Sequence coordinate system). The move is defined by the LEAD_RADIUS and ENTRY_ANGLE parameters.
◦ LEAD_IN—The tool leads into the cut. The move is defined by the TANGENT_LEAD_STEP, NORMAL_LEAD_STEP, LEAD_RADIUS, and ENTRY_ANGLE parameters.
◦ ○ RAMP—The tool enters at an angle. The move is defined by the RAMP_ANGLE and CLEAR_DIST parameters.
◦ PLUNGE—The tool moves at a rapid speed along the retract surface to the location directly above the start point of the next Tool Motion.
Under Cut exit move:
• Each cut—Select an exit move type for each intermediate cut. The options are:
◦ NONE—No exit move.
◦ CUSTOM_EXIT—Exit using the custom strategies, specified in the Custom strategies group box for this cut type. If the Main strategy causes gouging, then the system uses the First alternate strategy, and so on. If all the custom strategies cause gouging, then no exit move is created.
◦ AUTOMATIC—The system automatically determines the exit move type based on the surrounding geometry of the feature being machined. The exit moves are automatically degouged. If the first selected move type gouges the part, the system tries the next logical move type. If all the move types gouge the part, then no exit move is created.
◦ LINE_TANGENT—The tool exits in a line tangent to the cut. The length of the line is defined by the EXIT_DISTANCE parameter.
◦ NORMAL—The tool exits in a straight line normal to the cut. The length of the line is defined by the NORMAL_LEAD_STEP parameter.
◦ HELIX—The tool exits along a helix. The geometry of the helix is defined by the HELICAL_DIAMETER, RAMP_ANGLE, and PULLOUT_DIST parameters. The tool leaves the surface in a helical motion at CUT_SPEED until it reaches PULLOUT_DIST, then it retracts at RETRACT_SPEED. If you want the tool to exit completely by a helical motion, set the configuration option use_old_helical_exit to yes (the default is no).
◦ ARC_EXIT—The tool exits along a horizontal arc tangent to the cut (that is, the arc is located in a plane parallel to the XY plane of the NC Sequence coordinate system). The radius of the arc is defined by the LEAD_RADIUS parameter. The angle of the arc is 180 degrees.
◦ ARC_TANGENT—The tool exits along a vertical arc tangent to the cut (that is, the arc is located in a plane tangent to the cut and normal to the XY plane of the NC Sequence coordinate system). The move is defined by the LEAD_RADIUS and EXIT_ANGLE parameters.
◦ LEAD_OUT—The tool leads out of the cut. The move is defined by the TANGENT_LEAD_STEP, NORMAL_LEAD_STEP, LEAD_RADIUS, and EXIT_ANGLE parameters.
◦ GOTO_END—The tool moves to the specified datum point at the end of the cut if you specify an end point while defining the step. The direction in which the tool moves is defined by selecting the required option of the END_MOTION parameter.
◦ GOHOME—The tool moves to the specified Home point at the end of the cut motion if you specify a Home point for the operation while defining the step, The direction in which the tool moves is defined by selecting the required option of the END_MOTION parameter.
◦ PULLOUT—The tool moves away after a selected cut motion.
• Last cut— Select an exit move type for the last cut (exit move). The options are:
◦ NONE—No exit move.
◦ CUSTOM_EXIT—Exit using the custom strategies, specified in the Custom strategies group box for this cut type. If the Main strategy causes gouging, then the system uses the First alternate strategy, and so on. If all the custom strategies cause gouging, then no exit move is created.
◦ AUTOMATIC—The system automatically determines the exit move type based on the surrounding geometry of the feature being machined. The exit moves are automatically degouged. If the first selected move type gouges the part, the system tries the next logical move type. If all the move types gouge the part, then no exit move is created.
◦ LINE_TANGENT—The tool exits in a line tangent to the cut. The length of the line is defined by the EXIT_DISTANCE parameter.
◦ NORMAL—The entry motion is a straight line normal to the cut motion. The length of the line is defined by the NORMAL_LEAD_STEP.
◦ HELIX—The tool exits along a helix. The geometry of the helix is defined by the HELICAL_DIAMETER, RAMP_ANGLE, and PULLOUT_DIST parameters. The tool leaves the surface in a helical motion at CUT_SPEED until it reaches PULLOUT_DIST, then it retracts at RETRACT_SPEED. If you want the tool to exit completely by a helical motion, set the configuration option use_old_helical_exit to yes (the default is no).
◦ ARC_EXIT—The tool exits along a horizontal arc tangent to the cut (that is, the arc is located in a plane parallel to the XY plane of the NC Sequence coordinate system). The radius of the arc is defined by the LEAD_RADIUS parameter. The angle of the arc is 180 degrees.
◦ ARC_TANGENT—The tool exits along a vertical arc tangent to the cut (that is, the arc is located in a plane tangent to the cut and normal to the XY plane of the NC Sequence coordinate system). The move is defined by the LEAD_RADIUS and EXIT_ANGLE parameters.
◦ LEAD_OUT—The tool leads out of the cut. The move is defined by the TANGENT_LEAD_STEP, NORMAL_LEAD_STEP, LEAD_RADIUS, and EXIT_ANGLE parameters.
The Custom strategies group box contains three tabbed pages, Main, First alternate, and Second alternate, for defining the custom strategies for each cut type.