# Milling hardware # Chinese Mill 26 x 7 x 3.5, bench top mill # X Y axis are on 1" 5tpi ball screws [converted] # Z = worm. # # # Gearing is as follows: # Stepper Motor gear = 32 tooth # Worm/Ball screw gear = 48 tooth # # # Z at worm = 1 turn = 0.1". Therefore when the motor turns 540 degrees = 0.1". # X and Y at shaft = 1 turn = 0.2". Therefore when the motor turns 540 degrees = 0.2". # # System is standard 200step steppers, running Gecko G201, microstepping (10). # 2000 pulses = 1 rev # # Scaling Calculations: # # for X and Y: # # 1 inch = 5 turns of the screw # 1 turn of the screw = 48/32 turns of the motor # 1 turn of the motor = 2000 steps # # so scale is 1 inch = 5 * (48/32) * 2000 = 15000 steps # # for Z # # 1 inch = 10 turns of the worm # 1 turn of the worm = 48/32 turns of the motor # 1 turn of the motor = 2000 steps # # so scale is 1 inch = 10 * (48/32) * 2000 = 30000 steps # # lines with "#-!!!!!!!!!!!!! ALPHA" are edited by me. [EMC] VERSION = $Revision: 1.4.2.4 $ #+ Name of machine, for use with display, etc. MACHINE = EMC-HAL-STEP-IN #- Name of NML file to use, default is emc.nml NML_FILE = emc.nml DEBUG = 0 ############################################################################### # Sections for display options ############################################################################### [DISPLAY] #-!!!!!!!!!!!!! ALPHA # DISPLAY = tkemc DISPLAY = axis CYCLE_TIME = 0.200 #- Path to help file HELP_FILE = help/tkemc.txt #- Initial display setting for position, RELATIVE or MACHINE POSITION_OFFSET = RELATIVE #- Initial display setting for position, COMMANDED or ACTUAL POSITION_FEEDBACK = ACTUAL #+ Highest value that will be allowed for feed override, 1.0 = 100% MAX_FEED_OVERRIDE = 1.2 #- Prefix to be used PROGRAM_PREFIX = /usr/share/emc/ncfiles #- Introductory graphic INTRO_GRAPHIC = emc2.gif #-!!!!!!!!!!!!! ALPHA #INTRO_TIME = 5 INTRO_TIME = 0 ############################################################################### # Task controller section ############################################################################### [TASK] #- Name of task controller program, e.g., bridgeporttask TASK = milltask # TASK = minimilltask #- Cycle time, in seconds, that task controller will sleep between polls CYCLE_TIME = 0.002 ############################################################################### # Part program interpreter section ############################################################################### [RS274NGC] #- File containing interpreter variables PARAMETER_FILE = stepper.var ############################################################################### # Motion control section ############################################################################### [EMCMOT] #- Name of the motion controller to use (only one exists for nontrivkins) EMCMOT = motmod #- Key for real OS shared memory, e.g., for simulated motion SHMEM_KEY = 111 #- Timeout for comm to emcmot, in seconds COMM_TIMEOUT = 1.0 #- Interval between tries to emcmot, in seconds COMM_WAIT = 0.010 #+ Base task period, in nanosecs - this is the fastest thread in the machine #-!!!!!!!!!!!!! ALPHA #BASE_PERIOD = 50000 BASE_PERIOD = 30000 #- Servo task period, in nanosecs - will be rounded to an int multiple of BASE_PERIOD SERVO_PERIOD = 1000000 #- Trajectory Planner task period, in nanosecs - will be rounded to an # integer multiple of SERVO_PERIOD TRAJ_PERIOD = 10000000 ############################################################################### # Hardware Abstraction Layer section ############################################################################### [HAL] # The run script first uses halcmd to execute any HALFILE # files, and then to execute any individual HALCMD commands. # # list of hal config files to run through halcmd #+ files are executed in the order in which they appear HALFILE = core_stepper.hal #HALFILE = xylotex_pinout.hal HALFILE = standard_pinout.hal #- list of halcmd commands to execute # commands are executed in the order in which they appear #HALCMD = save neta ############################################################################### # Trajectory planner section ############################################################################### [TRAJ] #+ machine specific settings AXES = 3 # COORDINATES = X Y Z R P W COORDINATES = X Y Z HOME = 0 0 0 LINEAR_UNITS = 0.03937007874016 ANGULAR_UNITS = 1.0 CYCLE_TIME = 0.010 DEFAULT_VELOCITY = 0.0167 #MAX_VELOCITY = 1.2 MAX_VELOCITY = 0.9 DEFAULT_ACCELERATION = 15.0 #MAX_ACCELERATION = 20.0 MAX_ACCELERATION = 35.0 PROBE_INDEX = 0 PROBE_POLARITY = 1 ############################################################################### # Axes sections ############################################################################### #+ First axis [AXIS_0] TYPE = LINEAR UNITS = 0.03937007874016 HOME = 0.000 #MAX_VELOCITY = 1.2 MAX_VELOCITY = 0.5 # NOTE: the step generator module applies its own limits to # acceleration and velocity. We have discovered that it needs # to have a little "headroom" over the accel by the trajectory # planner, otherwise it can fall slightly behind during accel # and later overshoot as it catches up. In the long term we # hope to come up with a clean fix for this problem. In the # meantime, please set STEPGEN_MAXACCEL below to a few percent # higher than the regular acceleration limit MAX_ACCELERATION MAX_ACCELERATION = 20.0 STEPGEN_MAXVEL = 1.4 STEPGEN_MAXACCEL = 21.0 BACKLASH = 0.00225 CYCLE_TIME = 0.001000 #INPUT_SCALE = 4000 0 INPUT_SCALE = 15000 0 OUTPUT_SCALE = 1.000 0.000 MIN_LIMIT = -10.0 MAX_LIMIT = 10.0 FERROR = 0.050 MIN_FERROR = 0.010 HOME_OFFSET = 0.0 HOME_SEARCH_VEL = 0.0 HOME_LATCH_VEL = 0.0 HOME_USE_INDEX = NO HOME_IGNORE_LIMITS = NO #+ Second axis [AXIS_1] TYPE = LINEAR UNITS = 0.03937007874016 HOME = 0.000 #MAX_VELOCITY = 1.2 MAX_VELOCITY = 0.5 MAX_ACCELERATION = 20.0 STEPGEN_MAXVEL = 1.4 STEPGEN_MAXACCEL = 21.0 BACKLASH = 0.000 CYCLE_TIME = 0.001000 #INPUT_SCALE = 4000 0 INPUT_SCALE = 15000 0 OUTPUT_SCALE = 1.000 0.000 MIN_LIMIT = -10.0 MAX_LIMIT = 10.0 FERROR = 0.050 MIN_FERROR = 0.010 HOME_OFFSET = 0.0 HOME_SEARCH_VEL = 0.0 HOME_LATCH_VEL = 0.0 HOME_USE_INDEX = NO HOME_IGNORE_LIMITS = NO #+ Third axis [AXIS_2] TYPE = LINEAR UNITS = 0.03937007874016 HOME = 0.0 #MAX_VELOCITY = 1.2 MAX_VELOCITY = 0.5 MAX_ACCELERATION = 20.0 STEPGEN_MAXVEL = 1.4 STEPGEN_MAXACCEL = 21.0 BACKLASH = 0.000 CYCLE_TIME = 0.001000 INPUT_SCALE = 30000 0 OUTPUT_SCALE = 1.000 0.000 MIN_LIMIT = -2.0 MAX_LIMIT = 4.0 FERROR = 0.050 MIN_FERROR = 0.010 HOME_OFFSET = 0.0 HOME_SEARCH_VEL = 0.0 HOME_LATCH_VEL = 0.0 HOME_USE_INDEX = NO HOME_IGNORE_LIMITS = NO ############################################################################### # section for main IO controller parameters ############################################################################### [EMCIO] #- Name of IO controller program, e.g., io EMCIO = io #- cycle time, in seconds CYCLE_TIME = 0.100 #- tool table file TOOL_TABLE = stepper.tbl ############################################################################### # section for external NML server parameters ############################################################################### [EMCSERVER] # Uncomment the following line if you need to run a remote GUI. # EMCSERVER = emcsvr