Retrofitting a 1986 Maho MH400E
16 Mar 2019 21:15 #128774
by RotarySMP
Replied by RotarySMP on topic Retrofitting a 1986 Maho MH400E
Unfortunately, when I got the Boley, it only had the fine feed mechanism and the associated two change wheels. The rest of the change wheels, the pinion for the spindle and the banjos were lost.
madmodder.net/index.php/topic,7884.msg147233.html#msg147233
I did bodge up a spindle encoder and stepper mount to drive the leadscrew...
madmodder.net/index.php/topic,7884.msg129525.html#msg129525
... but only hooked up a temporary drive and PC to use it to make the first back plates. I have been torn between CNCing it properly, like you did your Holbrook with two jog wheels on the apron to still do manual turning, or getting a set of change wheels and making the banjos. I rather enjoy manual turning on a lathe.
Now that you have you Holbrook finished for a couple of years, do you find you use the jog wheels like a manual lathe for those quick 5 minute jobs where specific dimensions aren't critical?
Mark
madmodder.net/index.php/topic,7884.msg147233.html#msg147233
I did bodge up a spindle encoder and stepper mount to drive the leadscrew...
madmodder.net/index.php/topic,7884.msg129525.html#msg129525
... but only hooked up a temporary drive and PC to use it to make the first back plates. I have been torn between CNCing it properly, like you did your Holbrook with two jog wheels on the apron to still do manual turning, or getting a set of change wheels and making the banjos. I rather enjoy manual turning on a lathe.
Now that you have you Holbrook finished for a couple of years, do you find you use the jog wheels like a manual lathe for those quick 5 minute jobs where specific dimensions aren't critical?
Mark
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16 Mar 2019 21:35 #128777
by andypugh
No, pretty much never as it is easier to use my turn / face / thread macros.
I do use the X mpg for parting, but I will probably make a macro for that at some point.
Replied by andypugh on topic Retrofitting a 1986 Maho MH400E
Now that you have you Holbrook finished for a couple of years, do you find you use the jog wheels like a manual lathe for those quick 5 minute jobs where specific dimensions aren't critical?
No, pretty much never as it is easier to use my turn / face / thread macros.
I do use the X mpg for parting, but I will probably make a macro for that at some point.
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- Mccartymachine1
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17 Mar 2019 00:03 #128787
by Mccartymachine1
Replied by Mccartymachine1 on topic Retrofitting a 1986 Maho MH400E
I used two different configs for my maho. One horizontal and one vertical. Working great. Only annoying thing is switching between them in the same setup.
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17 Mar 2019 19:19 - 17 Mar 2019 19:20 #128848
by hanmon
Replied by hanmon on topic Retrofitting a 1986 Maho MH400E
Hi,
nice thread milling video Mark !
At the moment I'm working on this project which will be documented in Peter's CNC-Ecke :
Hanno
nice thread milling video Mark !
At the moment I'm working on this project which will be documented in Peter's CNC-Ecke :
Hanno
Attachments:
Last edit: 17 Mar 2019 19:20 by hanmon.
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- Glemigobles
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17 Mar 2019 20:09 #128850
by Glemigobles
Replied by Glemigobles on topic Retrofitting a 1986 Maho MH400E
Setting different machine configs for slow and fast spindles is a great option. I don't know how much you'd have to pay for a proprietary controller to be able to program that. But when it comes to spindle orientation (horizontal vs vertical) I thought you'd just use G17/18 and program the parts in CAM with the setup you want. At least that's the standard practice described in the Philips manual and the same codes are available in LinuxCNC as well.
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- drimaropoylos
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17 Mar 2019 21:21 #128859
by drimaropoylos
John
Replied by drimaropoylos on topic Retrofitting a 1986 Maho MH400E
I thing you are right, g17,g18,g19 is a better way compared to separate configurations.But when it comes to spindle orientation (horizontal vs vertical) I thought you'd just use G17/18 and program the parts in CAM with the setup you want. At least that's the standard practice described in the Philips manual and the same codes are available in LinuxCNC as well.
John
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19 Mar 2019 13:50 #128969
by andypugh
Most CAM systems assume that the tool is aligned along Z (and, in fact, LinuxCNC assumes that for canned cycles) to having the spindle aligned along the system Y can often be annoying.
I will quite often MDI stuff that way anyway, but if using CAM then I have to change config.
And then there is the question of arbor-cutters . I am not sure if any of the CAM systems are very good at that...
Replied by andypugh on topic Retrofitting a 1986 Maho MH400E
I thing you are right, g17,g18,g19 is a better way compared to separate configurations.
Most CAM systems assume that the tool is aligned along Z (and, in fact, LinuxCNC assumes that for canned cycles) to having the spindle aligned along the system Y can often be annoying.
I will quite often MDI stuff that way anyway, but if using CAM then I have to change config.
And then there is the question of arbor-cutters . I am not sure if any of the CAM systems are very good at that...
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20 Mar 2019 23:29 - 21 Mar 2019 13:35 #129124
by R2AIV
Replied by R2AIV on topic Retrofitting a 1986 Maho MH400E
Hi All! Today I successfully started all 3 axis and setting axis zero position. But I can't configure PID's to work normally. Axes works with rough FERRORs, up to 1 mm.Can you share your PID settings of your machines? And i have trouble with gearbox. When i trying to set spindle speed gearbox motor 1 moves and mechannicaly stops at end CW position. Reverse don't works. All connections is correct. What could it be? Thanx.
Last edit: 21 Mar 2019 13:35 by R2AIV. Reason: mistypes
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21 Mar 2019 23:28 #129228
by andypugh
Replied by andypugh on topic Retrofitting a 1986 Maho MH400E
There is no point sharing PID settings, they will be unique to each machine.
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22 Mar 2019 13:16 #129254
by RotarySMP
Replied by RotarySMP on topic Retrofitting a 1986 Maho MH400E
Is your machine also a 400E? Here is the axis set up part of my INI, to give you a starting point.
#********************
# Axis X
#********************
[AXIS_0]
TYPE = LINEAR
HOME = 100
FERROR = 0.5
MIN_FERROR = 0.2
MAX_VELOCITY = 45
MAX_ACCELERATION = 50
P = 6.5
I = 0
D = 0
FF0 = 0
FF1 = 0.22
FF2 = 0.0021
BIAS = 0
DEADBAND = 0
MAX_OUTPUT = 10
ENCODER_SCALE = -1000
OUTPUT_SCALE = 10
OUTPUT_MIN_LIMIT = -10
OUTPUT_MAX_LIMIT = 10
MIN_LIMIT = -1
MAX_LIMIT = 400
HOME_OFFSET = 0
HOME_SEARCH_VEL = 0
HOME_LATCH_VEL = -10
HOME_FINAL_VEL = -1
HOME_USE_INDEX = YES
HOME_SEQUENCE = 1
#********************
# Axis Y
#********************
[AXIS_1]
TYPE = LINEAR
HOME = 200
FERROR = 0.5
MIN_FERROR = 0.2
MAX_VELOCITY = 40
MAX_ACCELERATION = 50
P = 5.5
I = 0
D = 0
FF0 = 0
FF1 = 0.228
FF2 = 0.0015
BIAS = 0
DEADBAND = 0
MAX_OUTPUT = 10
ENCODER_SCALE = -1000
OUTPUT_SCALE = -10
OUTPUT_MIN_LIMIT = -10
OUTPUT_MAX_LIMIT = 10
MIN_LIMIT = -1
MAX_LIMIT = 251
HOME_OFFSET = 250
HOME_SEARCH_VEL = 0
HOME_LATCH_VEL = 8
HOME_FINAL_VEL = 40
HOME_USE_INDEX = YES
HOME_SEQUENCE = 1
#********************
# Axis Z
#********************
[AXIS_2]
TYPE = LINEAR
HOME = 370
FERROR = 20.0
MIN_FERROR = 1.0
MAX_VELOCITY = 45
MAX_ACCELERATION = 50
P = 7.5
I = 0
D = 0
FF0 = 0
FF1 =0.218
FF2 = 0.002
BIAS = 0
DEADBAND = 0
MAX_OUTPUT = 10
ENCODER_SCALE = 1000
OUTPUT_SCALE = -10
OUTPUT_MIN_LIMIT = -10
OUTPUT_MAX_LIMIT = 10
MIN_LIMIT = -1
MAX_LIMIT = 376
HOME_OFFSET = 375
HOME_SEARCH_VEL = 0
HOME_LATCH_VEL = 10
HOME_FINAL_VEL =15
HOME_USE_INDEX = YES
HOME_SEQUENCE = 0
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