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CNCadmin — Sat, 04 Feb 2012 05:50:04 GMT

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New Machine Build G.WEIKE LASER MACHINE NEW DESIGN

gweikelaser — Sat, 04 Feb 2012 05:39:37 GMT

LG6040B laser engraver
This modle adopts three-phase motor and driver ;high-speed outside Rail ; high speed USB 2.0 data interface support ,32M high speed DSP controller .Applied in clothing ,fabric ,leather and other Soft materials .

Specification:
Laser- type：CO2laser beam
Laser power：60W
Engraving area：600X400mm
Engraving speed：0 - 1000mm/min
Cutting speed：0 - 800mm/min
Resetting position accuracy：� 0.05mm
Controlling system：DSP
Cutting thickness：0-30mm(According to imaterials)
Cooling mode：water-cooling and protection system
Gross power：≤1250W
Working voltage：220 � 10％，50HZ（60HZ）
Operating temperature：0℃-45℃
Operating humidity：5％-95％
Controlling software：DSP
Graphic format supported：BMP,PLT, DST, DXF and AI
Net Weight：200KG

Attached Thumbnails

2D Contouring tip/warning

mayhugh1 — Sat, 04 Feb 2012 05:27:25 GMT

I was making a steel cam the other day which is a disk about 3" in diameter and about 3/8" thick with four cam lobes around the outer periphery. I decided to use the 2D contouring op as it is pretty efficient and produces really nice surface finishes as only the flank of the tool is used. The job assignment was the projected curve from the outer periphery, but since the workpiece was a bit larger than the worst-case OD of the cam, I also defined a tubular workpiece with the appropriate dimensions of the real workpiece. In the parameters section I defined a single step of .15" thickness so that the cutting operation would take a full depth cutting pass of the actual lobe. Finally, I selected a tangential lead-in and a roughing zone of .10" with a per/pass width-of-cut of .010" as the material I was using was not fully annealed and I wanted an clean surface finish. The operation simulated and the color-coded toolpath checker showed the part being cut perfectly with no gouging or remaining material left. However when I cut the actual part it was badly gouged in the area of the tangential lead-in.
I'm sure the issue was mixing a workpiece with a 2D contouring operation which is probably not fully supported although I could not find any warnings in the manual about this. On the second attempt I solved the problem by extruding a fixture using the lobe profile curve in order to keep the tool outside the actual part profile. In all fairness to Sprutcam, upon close inspection of the machining result in the simulation tab before the simulation was actually run there was a tiny and easily overlooked line showing the path of the tool running into the part, but when the simulator was run there was no hit of trouble in the 3D machining result. - Terry

Need Help! No options on controller

ncushman — Sat, 04 Feb 2012 05:26:52 GMT

We are having an issue with robotic programming. When we attempt to change a program in a job when we hit the down arrow to the CALL (program) ling then hit the right arrow to move over to highlight the program we want to change it moves down to the next line and will not give us a choice so we are only stuck with 2 programs that we can run due to them being preset from yesterday. Also there are no options above the F1-F5 keys on the controller even when in the program list. I tried rebooting the system from loss of power state, purged it and nothing. When i press the prev and next keys nothing happens. I also tried changing the user from user to user 2 in the menu list and there was no change either. I am at a total loss, i have never seen or experanced this issue. Any insite for corrections or possibilities would be very helpful. We are using Fanus R-J3iB System with a P200E Robot

Problem Z Axis creeping

RustedOut — Sat, 04 Feb 2012 03:43:39 GMT

Had a job to do on the mill and part of it was doing some scribing. Started off ok, going about .005" deep with a single flute scribe. It was a pretty slow process since I can only run at 1600 rpm for now. There was, I think, 8 different parts to scribe with 6 different scribe areas per part. So the mill head was up and down while moving through the parts all in a row.

I have no way to measure the depth of each scribe area, but they got progressively deeper as the program wore on toward the end. This was in .031 O1 steel, not heat treated. I hazard a guess that the better half of it was .020" deep. But my dro showed a constant Z-.005". Parts are probably scrap, but the fellow they belong to hasn't seen them yet.

I suspected something going on with the head, but didn't really see anything of notice during the run of that program. I had to then flip the parts and scribe them on the opposite side. Same thing, started out good, then got deep as the mill moved through the program. Since they were now individual parts at that point I was able to keep reseting Z to account for whatever was happening. I was suspecting cutter slip in my ER32 collet at that point.

I decided to abandon the single flute scribe at one point and go with my spring loaded scribe to finish them up. So I got through them and may have to get some more material and do them over. Today, on another project, just finishing one cut to bring it within tolerance and Z starts to get wacky again. This time it's in a pretty good tool holder so I'm not thinking tool slippage. I started watching the pulley and belt and noticed it cogging down. Maybe a thou or two at a time. Again with no indication from the dro that the Z was moving. It read .0000" the whole time. I decided I could live with some reduction in the Z value, so I kept going to see where it would end. Dropped a total of .030".

Last night I was changing parts after a program ended, or was reaching for my wrench to do that. I turned back to the mill to find the head slowly lowering itself. I was using a spoil board to hold my parts, so the cutter had a semi soft place to stick and it went about 1/2" into it. Then the drive faulted. It was just like the power had been shut off to the motor and was free wheeling down the screw. I reset the drive and things were good again. Never happened again, but it shouldn't have happened even once.

I'm thinking two separate issues here. I have problems trouble shooting things unless I can duplicate them and test different fixes. I'm sure the creeping is fixable, once I find the cause. Not sure I can duplicate the other issue though. So, going through the creeping Z in my head trying to think of the possible causes. I'm not really coming up with anything concrete to even look for right now. I did try to retune the drive the night before last and was getting some strange oscillations from the motor. I never felt I had it tuned as good as I had in the past, but going beyond were it is now just seemed to make the thing skittish. Could the gain and damp of the drive cause the head to creep down? And to think, I was getting ready to start milling on my belt drive conversion. That's now on hold until this thing is fixed and thoroughly tested.

Bob

Looking for help locally

lfe011969 — Sat, 04 Feb 2012 03:25:59 GMT

Where can I ask for technical help from people who might live near me? I bought a Chinese laser engraver / cutter and am really regretting right about now because of the poor instructions and tech support. Please help!! Thanks.

Lonnie Elrod

Newbie GWEIKE wood working machine

gweikelaser — Sat, 04 Feb 2012 03:16:47 GMT

WK1325 CNC router for wood

The max traveling speed can reach more than 30 meters/minute,the max cutting speed can reach 25 meters/minute.
Adoption of advanced DSP CNC system and make the operation more convenient. And its design provide more human nature.
Unique intelligent caculation rules can fully develop the potential of the motor ,it also leads to high speed processing and the synchronization of curves and straight line.
Y axis adopts double motor driver.
Six districts vacuum table.
Professional and humanized 3D control system.
Equip 4.5kW spindle motor, vacuum suction table and dust collector.It is mainly applicable in the manufacture of furnitures and the wooden doors.

Specification:
X Y axis working area: 1,300 x 2,500mm
Z axis working area: <200mm
Table size: 1,450 x 2,920mm
Max. speed: 30,0000mm/min
Max. working speed: 20,000mm/min
Working delicacy: 0.02mm
Reposition accuracy: 0.05mm
Max. feeding height: 200mm
Command: G code*, u00*, mmg*, plt*，nc
Software: Type3, Artcam, Artgrave, Ncstudio software
Max. power consumption: 15KW
Spindle: 4.5kW variable speed, water cooled motor
Spindle speed: 24,000rpm
Work type: stepper（option:servo）
Working voltage: AC 380V, 50/60Hz
Memory: 32M
Manner of receiving data: USB OR PCI
Running circumstance temperature: 0 - 45℃
Relative humidity: 30% - 75%
Weight:1,400kg

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New Machine Build G.WEIKE CNC ROUTER

gweikelaser — Sat, 04 Feb 2012 03:10:48 GMT

WK2030 CNC router

Adopt constant power water-cooled frequency spindle, high speed, low noise and long life.
Three axises are precision ball screw vice transmission, reasonable structure, stable performance, good weight bearing ability.
This machine is mini machine, low price, high performance, especially suitable for home and small enterprises,institutions to do processing .
Users can assemble electric spindle and driving control system according to their own needs.

Specification:
X,Y axis working area:300 x 200mm
Z axis working area: <60mm
Table size: 370mm x 440mm
Max. speed: 0 - 4,000mm/min
Max. Working speed: 0 - 4,000mm/min
Working delicacy: 0.015mm
Reposition accuracy: 0.05mm
Max. Feeding height: 60mm
Command: G code *.u00 *.mmg *.plt *.nc
Software: Type3、 Artcut、 Artcam 、Ncstudio
Max. power consumption:1.2KW
Spindle: 0.8KW variable speed, water cooled motor
Spindle speed: 24,000rpm
Work type: steppernd
Working voltage: AC 220V, 50-60Hz
Manner of receiving data: USB or PCI
Running circumstance temperature: 0 - 45℃
Relative humidity: 30% - 75%
Weight: 57kg

Attached Thumbnails

Trial by fire

maz43 — Sat, 04 Feb 2012 02:43:51 GMT

I Never programmed or ran a Swiss before-just three axis mills and two axis lathes.
The place I work at just bought a Hanwha Xd20H to do fittings out of 304ss.
Supposedly the programs were written, 500 samples were made by the Dealer
and approved by the customer. I was to get two weeks training and pretty much a turnkey deal.
We have to deliver 600 pcs of two parts by the 15th.
Turns out there is no turnkey, no programs, and about two days training due to installation problems.
The programs were written by me while getting coached by the trainer.
We tooled up as much as we could as the machine wasn't fully installed yet.
That ate up the first day of training.
After spending half the second day getting a print with all the missing dimensions and getting the first part, We were told we had the wrong print.
We had rev 1, they gave us rev 8.
The rest of my last day of training was spent rewriting the whole program.
Had to send the new print back as it too was incomplete.
Finally got a new program in and the trainer did what he could with it.
We still don't have a finished part and after a long 13 hr day, the trainer is off to another gig.
It's all in my lap now as of monday.
I like challenges and will do what I can but I think in this case the phrase "a little planning goes a long way" is an understatement.
I am either going love or hate Swissturns in a very short amount of time.

Rant off

Maz

Need Help! One of my Python Digital motor drivers is gone.

on7tim7 — Sat, 04 Feb 2012 02:38:32 GMT

One of my Python Digital motor drivers is gone. These drivers were made by �WWW.CNCbyDesign.com that doesn�t exist anymore and I lost one of them. If anyone knows about these motor driver boards I ask you to help me either find where to buy them or if you have some of these to sell I will buy it from you. Thanks.

Polyhedrons in Madcam

Hog — Sat, 04 Feb 2012 02:07:36 GMT

Hi All,

I am new to toolpath making. I am working in Rhino 4 and have the latest version of madcam. I have looked at the tutorials on the madcam site, but reckon someone with more experience may be able suggest the best way to do the job.

I want to cut 3D triangles (see attached Rhino file) out of sheets of ply. The triangles are the exact thickness of the ply. The edges of the triangles are either undercut, overcut, or 90 degrees. Each corner of each triangle is also either undercut, overcut, or 90 degrees.

I'm wonderig about thinngs like, "What's the best Rhino geometry to start with in this case?". In the Rhino file attached, the shapes are polysurfaces - should I create other geometry to make it easier to toolpath?

Any thoughts would be greatly appreciated. As I said, I'm a real newbie, so no information too simple!

Cheers,
Hamish

Attached Files

2 PROCESSED TRIANGLES.zip‎ (9.7 KB)

Jinan Quick CNC: K45MT-S on Youtube

bellawyl — Sat, 04 Feb 2012 01:45:49 GMT

K45MT-S on Youtube:

Quick CNC - K45MT-S - YouTube

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Second Momus Build (Pro Version)

bjesson — Sat, 04 Feb 2012 00:36:15 GMT

Been a few months and slowly working on a heavily modified Momus CNC. Will update pics shortly with some detail.

Help Please,, Niobium!! :(

springer82 — Sat, 04 Feb 2012 00:17:46 GMT

It has been almost 10 years sense I have had to cut niobium. The coolant we used cost almost $1000 per gallon and a lot of broken tools before we got it right. I never thought I would see this stuff again. Now,, here we are today. New shop,, new ideas. OMG. Here I go again. I have a few questions for the people that have run niobium before. To start,,, what coolant did you use!!! This shop is not going to go for 1k per gal. I have Hangsterfer's hardcut in the machine now. I know that will have to go. I started with that last time. What SFPM do you use. I think I used about 300??? If I remember right 2flt endmills about 50* worked the best??? Any info will help. Thanks for your time. :cheers:

Job Opening for Master CNC and CAD person (central louisiana)

Mach2012 — Fri, 03 Feb 2012 23:58:07 GMT

Experienced/Master CNC Machinist & CAD/CAM developer, fluency in G code required, experience with Solid Works needed.
(We utilize the latest in HAAS CNC turning and milling centers)

Preferred:
3D Programming ability
OneCNC
HAAS Intuitive
Master Cam a plus

Company located in South/Central Louisiana
Salary DOE up to $36 per hour
Company can provide transitional housing for up to 6 weeks