Re: Solid V Wheel bearings
Could it possibly because of stray current running thru the bearings. Try measuring current between the frame and the bearings.
Dan
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-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Scott A Tovey via groups.io Sent: Thursday, June 24, 2021 5:09 PM To: [email protected]Subject: [CAD-CAM-EDM-DRO] Solid V Wheel bearings Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
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Re: Solid V Wheel bearings
Lasers aren't exactly heavy duty machines, maybe not use the breaker bar when torquing things up?
Plenty of 3D printers use plastic bearings & v-grooves, they seem to work fine.
Not sure why you'd be using bearings with plastic balls, they're usually only for food grade stuff. Most v-bearings are steel with the plastic outer.
Tony
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-----Original Message-----
From: [email protected] <[email protected]>
On Behalf Of Scott A Tovey via groups.io
Sent: Friday, 25 June 2021 10:09 AM
To: [email protected]
Subject: [CAD-CAM-EDM-DRO] Solid V Wheel bearings
Hi, My name is Scott.
I joined this group to ask a couple questions regarding bearings as I ran into
an odd scenario over this past month.
Bearings deforming while sitting around doing nothing.
I have a laser burner with Solid V Wheels.
I upgraded the z-axis to one with a manual adjusting knob making it easier to
put the laser at the right spot.
I let the thing set there for about a month and when I turned it on the other
night, that axis was frozen in place. I had to manually force the axis to move,
but when the wheels rotate 360 degrees, the bearings lock in place.
So I swapped out the bearings for ones that didn't have this problem and the
next morning the bearings had developed the same but not as severe
condition.
Has anyone heard of this happening before?
Are there bearings out there with plastic or nylon ball bearings that will
deform should they be holding up a bit more weight than what they were
designed for?
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Re: Solid V Wheel bearings
"You might want to just replace the deformed plastic bearings with steel bearings."
That's what I'm thinking of doing.
I'm looking at open builds as a source,
any sources you know of off hand?
On Thursday, June 24, 2021, 10:06:30 PM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
Scott, all materials do that. Though in steel, it takes much heavier loads. If you need non-metallic bearings you might want to try ceramic bearings. They'll be a little more resistant to plastic deformation than most common plastics. You might want to just replace the deformed plastic bearings with steel bearings.
Bill in OKC <---- not an expert at anything, not an engineer, and definitely not an expert in machine design. I have been several kinds of mechanic. Parts that deform are either overloaded, or overheated, or both, usually.
HTH!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Thursday, June 24, 2021, 08:17:03 PM CDT, Scott A Tovey via groups.io <satovey@...> wrote:
Hi, My name is Scott.
I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month.
Bearings deforming while sitting around doing nothing.
I have a laser burner with Solid V Wheels.
I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot.
I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place.
So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition.
Has anyone heard of this happening before?
Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
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Re: Solid V Wheel bearings
Scott, all materials do that. Though in steel, it takes much heavier loads. If you need non-metallic bearings you might want to try ceramic bearings. They'll be a little more resistant to plastic deformation than most common plastics. You might want to just replace the deformed plastic bearings with steel bearings.
Bill in OKC <---- not an expert at anything, not an engineer, and definitely not an expert in machine design. I have been several kinds of mechanic. Parts that deform are either overloaded, or overheated, or both, usually.
HTH!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Thursday, June 24, 2021, 08:17:03 PM CDT, Scott A Tovey via groups.io <satovey@...> wrote:
Hi, My name is Scott.
I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month.
Bearings deforming while sitting around doing nothing.
I have a laser burner with Solid V Wheels.
I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot.
I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place.
So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition.
Has anyone heard of this happening before?
Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
|
Hi, My name is Scott.
I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month.
Bearings deforming while sitting around doing nothing.
I have a laser burner with Solid V Wheels.
I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot.
I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place.
So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition.
Has anyone heard of this happening before?
Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
|
Re: converting xy cartesian G code to polar coordinate G code
On 02/01/2021 02:39 PM, Dan Mauch wrote: Has anyone created a excel spreadsheet or know of a program that will take XY g code and convert it to polar coordinate g code using G 16. I\m building a scar robotic arm and need such a program.
Why not use LinuxCNC? It can take in Cartesian G-code and move generic robots with a variety of kinematics such as a SCARA-type design. Jon
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converting xy cartesian G code to polar coordinate G code
Has anyone created a excel spreadsheet or know of a program that will take XY g code and convert it to polar coordinate g code using G 16. I\m building a scar robotic arm and need such a program.
Dan Mauch
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Re: EMC, Polar Coordinates CNC, ROBOT Arm Control?
If you find a program let me know also.
Dan
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Re: X carve control and gcode recommendations
Fusion seems to be the hobbyist choice of free software nowadays and can create G-Code for a lot of different targets. ? John Dammeyer ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Chuck Merja
Sent: October-20-20 2:05 PM
To: [email protected]
Subject: [CAD-CAM-EDM-DRO] X carve control and gcode recommendations? My robotics club has a Grizzly G8689 mini mill converted to CNC (G540 and MACH3, d2nc for CAM) and recently acquired an X-Carve unit.? The X-carve has a GRBL (arduino based) controller and needs gcode different than we are used to.? We have demo'd MeshCam, but either we don't know it well (probably) or it isn't powerful enough to give us control over the gcode generation.?
Wondering if we can find a free CAM generator for this unit ... recommendations? It doesnt like D2NC gcode.?
OR maybe drop a TB6600 controller system in it and use MACH??? it does have limit switches, so I'd continue to use them.
Thanks so much,
Chuck
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X carve control and gcode recommendations
My robotics club has a Grizzly G8689 mini mill converted to CNC (G540 and MACH3, d2nc for CAM) and recently acquired an X-Carve unit.? The X-carve has a GRBL (arduino based) controller and needs gcode different than we are used to.? We have demo'd MeshCam, but either we don't know it well (probably) or it isn't powerful enough to give us control over the gcode generation.?
Wondering if we can find a free CAM generator for this unit ... recommendations? It doesnt like D2NC gcode.?
OR maybe drop a TB6600 controller system in it and use MACH??? it does have limit switches, so I'd continue to use them.
Thanks so much,
Chuck
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Re: WET Re: [CAD-CAM-EDM-DRO] Damage to CNC machines
Carrying for the "iron" on CNC machines is identical to manual machines. (keep oil on the ways and chips off) CNC machines generally have way covers with wipers at the ends. Maintenance to these wipers and covers will keep chips from building up in places where they may damage wires, switches, flexible cable ways and the ways themselves. If way covers become worn, warped or dented, they are allowing chips in where the shouldn't be. I own several old CNC machines. One was built in 1985. The iron is still in pretty good shape, she is capable of holding turn diameters of .0005 easily. However, the electronics are finicky. They are sensitive to temperature. I have to keep an extra fan on the power supply. Occasionally I need to replace a cable. They are repeatedly flexed and exposed to coolant. Most coolants are harsh on plastics and rubber. Choose your medicine, either run new machines and trade them in before they become trouble. Or, get to know a good technician. I do as much repairing myself, but there are times I can't figure it out and need to hire a tech. Usually at about $150/hour plus travel expenses. Fanuc has outstanding support, as does most major manufacturers. I've spent hours on the phone with Fanuc, Mori Seiki hotline, Ellison Technologies, and Milltronics. I have the good fortune of having both manual and CNC machines at my disposal.
On Tue, Sep 22, 2020 at 9:31 AM, idea2man <wthomas@...> wrote:
?
Hi Kpfi & all:
???? One of the things I have found to watch is how much oil isin the coolent.
If a way line cracks or breaks the collent will have a much higher oil content
before long.? Check to see if your way oiler is way down or using a lot more
oil the normal.? This is one of the problems I have came on>
????????????????????????????? Shut down in Michigan USA
????????????????????????????????????? Bill Thomas
On 2020-09-22 05:26, Kofi & Mimi in Ghana via groups.io wrote:
Hi all, I have realized over the years that? no matter how fast and efficient CNC machines is, they’re not infallible. They develop problems and need maintenance just like any other type of machine or tool. And like any other tool, there are certain things you can do that might inadvertently damage these machines. Unfortunately for me, I have focused more on the definite steps you can take to keep them in good working order.
Can anyone share with me some steps that lead to damage.
Thank you
Kofi
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WET Re: [CAD-CAM-EDM-DRO] Damage to CNC machines
?
Hi Kpfi & all:
???? One of the things I have found to watch is how much oil isin the coolent.
If a way line cracks or breaks the collent will have a much higher oil content
before long.? Check to see if your way oiler is way down or using a lot more
oil the normal.? This is one of the problems I have came on>
????????????????????????????? Shut down in Michigan USA
????????????????????????????????????? Bill Thomas
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On 2020-09-22 05:26, Kofi & Mimi in Ghana via groups.io wrote:
Hi all, I have realized over the years that? no matter how fast and efficient CNC machines is, they’re not infallible. They develop problems and need maintenance just like any other type of machine or tool. And like any other tool, there are certain things you can do that might inadvertently damage these machines. Unfortunately for me, I have focused more on the definite steps you can take to keep them in good working order.
Can anyone share with me some steps that lead to damage.
Thank you
Kofi
|
Hi all, I have realized over the years that? no matter how fast and efficient CNC machines is, they’re not infallible. They develop problems and need maintenance just like any other type of machine or tool. And like any other tool, there are certain things you can do that might inadvertently damage these machines. Unfortunately for me, I have focused more on the definite steps you can take to keep them in good working order.
Can anyone share with me some steps that lead to damage.
Thank you
Kofi
|
Checkout what Gene did:
Arturo Duncanhttps://cnc4pc.com
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WET :ON THE BALL STEVE [CAD-CAM-EDM-DRO] Directions Manual
?
On 2020-08-25 04:53, Steve Stallings wrote:
New members using tricks like this one do not have free access to post. They may get a post approved when it is strange but seems to be somewhat on topic. They do not get unmoderated until multiple posts are truly on topic. This one got set to manual moderate due to the nature of his first post.
?
SPAMER!
On 8/24/20 11:22 PM, Dave via groups.io wrote:
Hi, where can I get a direction video/manual of the machine?
Thanks!
- Dave
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Has anyone converted a Boxford me10 lathe to Cnc? ?Looking for info and suppliers. ?Ideas.
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New members using tricks like this one do not have free access
to post. They may get a post approved when it is strange but seems to be
somewhat on topic. They do not get unmoderated until multiple posts are truly on
topic. This one got set to manual moderate due to the nature of his first
post.
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SPAMER!
On 8/24/20 11:22 PM, Dave via groups.io
wrote:
Hi,
where can I get a direction video/manual of the machine?
Thanks!
-
Dave
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|
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Hi, where can I get a direction video/manual of the machine?
Thanks!
- Dave
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Posts to the CAD-CAM-EDM-DRO that seek to drive traffic to any
web enterprise rather than actually interact with the list are not
welcome.
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Hi administrator, It's been so times now since a member asked for
the group guidelines but no reply has come from your end. Richard
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Bill in OKC too
Kofi & Mimi in Ghana