Knurling in MC

[Master Whidbey]

How do I knurl using MC? Lathe 9.1

[Brendan P]

Good question.....

I will be standing by on this thread to find out myself.

[crazy^millman]

I would think you would do it the same way I did it on any lathe you write a single pass like a finish operation. I defined the tool as a regular tool then gave it the correct offset once it was set for the dia and went from there. I would use the face as my z0 for the tool then I would make a dia bigger ands make that my teach dia for the tool. I would then make a chain to come up to the part in z axis big then down in x axis till enganged inot the Dia to make the knurl the back off in x to clerance Dia then IU would do the retract. I would cutter my tool offset to control how much pressure for the knurl. I was always so a step knurl in X aaxis doing a back in forth in Z if I did not have a CNC lathe wit hthe xxxx needed to knurl. I would also look at corenr use style knurlers or convex style so you keep the amount of contacted surface down.

 

Good Luck

 

Crazy Millman

[Rick Damiani]

I think you'll want to set your lead-in and lead-out moves to ensure that they will feed straight in and straight out, rather than at an angle.

[crazy^millman]

Yeah dont have lathe so if lathe has that for tool paths then that would be perfect.

 

 

Crazy Millman

[Mick]

I did a knurling toolpath in Mastercam yesterday, and used a Finish toolpath, and defined the tool as a external grooving tool, with the width matching the width of the knurling roller.

It worked a treat.

 

Cheers,

 

Mick

[Harryman]

Just a finish pass should work. The tough part is tweaking in the offsets. If you are using a double roll, you can't preset the thing. And you won't know how far to impress till you try it. Start about 1/3 of the roller width on the part, feed in and across. Scrap part, tweak offset, tweak feedrate, repeat. Sometimes the knurl roll and part diameters and pitch are just right and everything goes great. And sometimes everything is just wrong and you get a mess. If you're getting a mess, use your size tolerance to start with a larger or smaller diameter to try to hit the diameters and pitch sweet spot.

 

Knurling sux.

 

[ 10-23-2003, 12:26 AM: Message edited by: Harryman ]

[crazy^millman]

Well i use to make a Knurled roller for the printing industry that had to be within .001 od when finished and Heat treated. I would make it big the bore small and then grind the od and id in one set-up and be done with it. I like to knurl it is fun.

 

 

Crazy teh krurls ben weh fun Millman

[Master Whidbey]

quote:

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Scrap part

, tweak offset, tweak feedrate, repeat

---

Been doing alot of that.

 

quote:

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Finish toolpath, and defined the tool as a external grooving tool, with the width matching the width of the knurling roller

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This might work great, will find out later in the day.

[McRae]

Check out Dorian Tool's cut Knurling tools - they will make you a pile of money - they are costly to start with but will reduce your machining time considerably.

[Keith Graydon]

Ah knurling.

 

Use a finish pass as Mick posted

 

quote:

---

I did a knurling toolpath in Mastercam yesterday, and used a Finish toolpath, and defined the tool as a external grooving tool, with the width matching the width of the knurling roller.

It worked a treat.

---

I like to feed back off my part tho. feed in, feed out. like a g85 bore cycle in mill. prolly need to edit that Z move into the program.

 

-Keith

[StevenL]

I'm at this point this morning.  I talked to our machinist about running some knurls and I need to get it on MC.  My first thought was exactly what I'm reading here.  I'll call it a grooving tool and just run a finish pass.  Thanks for the confirmation .  It seemed to make sense and this forum has confirmed it.