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CNC forums for CNC Machinists, machining, CNC milling, turning, maintenance and machinery repair, CNC troubleshooting and Professionals learning cnc.
Updated: 7 hours 26 min ago

need advice about cnc maintenance services

Wed, 10/18/2017 - 21:22
Quote: Originally Posted by corvuscorax4 hello,

me and few my friends are thinking to provide cnc maintenace services. We have some experience in this area. Maybe there is somebody who could share his experience with me. What difficulties are encountered there and so on? Maybe there is specific area or something that we should concentrate on? I am looking for discussion or any advice concerning my topic. Thank you. the control side is what I'm getting into these days, turret alignment and motor troubleshooting are fine, but axes alarms can be messed up very easily if you aren't very careful. I would study the fanuc side of things from ancient to new and familiarize yourself with how the alarms relate to different situations.

Fadal 3016fx Fanuc 9081spindle error (al-081) error

Wed, 10/18/2017 - 20:48

I get this error very randomly but mostly when coming out of low gear. I can usually run M84 and fix it but lately it is throwing error 1184 logr calib spdl start error. Any help would be greatly appreciated. Can anyone point me in the right direction it seems it is a physical issue with the belts not getting into position fast enough during spindle orientate. Also I have had the spindle stop and it thinks its orientated but its 10 degrees off setting up for a major tool change crash. Any help would be greatly appreciated.




Help with coding cycles on Traub TNA 480 with TX-8 controller

Wed, 10/18/2017 - 14:13
Hello, just noticed your reply.
Basically all the roughing cycles on the TX-8 control take the information from the finishing section/contour of the program. You need to put a line number at the beginning of the finishing contour and another (higher) one at the end of your finishing pass. In the roughing cycle the letters "P" and "Q" refer to these line numbers. It depends on the work you due but in practice you can most likely cover 90% of all roughing with the G71 cycle.

Attached please find a scan from the Traub TX-8D Programming Handbook. Unfortunately it is in German and Metric but nevertheless, the sketches and samples should be self explanatory. Take a look at it and let me know if you need more explanation, information for the other cycles or some translation. I'm a bit pressed for time right now since I'm going on a trip for 6 weeks out of the country but will be back before the holidays.

Just a few comments for easier understanding. The G71 rough cycle has the ability to do contour parallel and descending contours. However depending on the type of roughing tool used it might not be able to do the descending contour. For that you have G88 and G89. G88 before the G71 cycle will tell the control to rough out the descending contour, G89 will tell it to skip the descending section. For safety the default in the control is G89 - skip

Another small thing is tool nose radius compensation - you can rough with or without tool nose radius compensation, depending where you put your line numbers in the finish contour. If the G46 command for tool nose radius compensation "ON" in the finishing contour comes after the start line number the G71 cycle will use tool nose radius compensation for roughing as well.

The meaning of the letters in G71:

A - would be a subroutine number. Instead of having the finishing contour between line numbers you could call the contour from a subroutine as well.

P - start line number

Q - end line number

I - finishing allowance in X direction

K - finishing allowance in Z direction

D - depth of cut

F - feed rate

E - reduced feed rate for the descending part of the contour if you use the G88 function

S - spindle rpm or constant cutting speed

Good luck Attached Files

Fanuc ethernet popen pclose

Wed, 10/18/2017 - 13:10
Quote: Originally Posted by vivekchikale There is not direct command to send the data over ethernet port like the RS232 port.
You need to develop an application program which runs on ur PC.
This application program can then accesss data over ethernet port of FANUC CNC & then with the use of FOCAS library function it is possible to read various data like Macro variables, parameters etc.
POPEN, PCLOSE commands work only with RS232 yes there is? you can use ftp server no need for focas...


Wed, 10/18/2017 - 06:10

I'm operating a Biesse Rover C6.4 CNC that is having problems picking the tools.
what might cause this and how can i rectify this issue?
need some assistance.

Thanks In Advance

Compensation Type set to control or wear?

Wed, 10/18/2017 - 02:16
Quote: Originally Posted by NGrimberg When I do a contour tool path for a mill for compensation type I've used "wear" for many years and never had any of the issues that I use to have when I used "control" and now I work at a shop where the tool room manager tells his people to program with compensation type set to "control" because that's how everyone does it.

Any thoughts Wear setting saves time.

Control setting allows you to use different size cutters.

Have you ask your tool room manager why he wants his people to use computer compensation?

CNC Machined Part

Mon, 10/16/2017 - 02:40
Why is a specially machined part more expensive than a standard bolt that I would find in a hardware store?

5-axis Fanuc 16W

Fri, 10/13/2017 - 06:49
All Fanuc Wire EDMs comes standard with the capability to remotelymonitor the machine from any PC hooked to the company network.

New user

Fri, 10/13/2017 - 06:36
Hi Friends,

I am Glad to be a new user of this platform.

I am the current president of Machining Design Associated Ltd. As ISO certified CNC machine shop, hope we can learn and help each other.

Thank you

Curious about 5-axis Machining? (Infographic)

Wed, 10/11/2017 - 10:31
Learn everything you need to know about 5-axis machining with this comprehensive guide. Attached Images

Hardinge bar feeder interface

Tue, 10/10/2017 - 12:27
I need to find a place to input a 24V M finish signal to close the collet.

In over my head

Tue, 10/10/2017 - 07:35
Hi all, manual machinist turned production machinist/toolmaker/repairman...

Have some experience with basic machine repairs. I've come here to learn more about nuts and bolts of machine controls.

Holz her / campus

Mon, 10/09/2017 - 19:22
Did more research has to do with layers names and how the software is set up. Line color. User manual isn't helpful as far a set up goes.

sinumerik 810T programming

Sun, 10/08/2017 - 07:49
We bought emcoturn 425mc with sinumerik 810T operating system few weeks ago. I have never used and program machine like this with two spindles. Maybe somebody who have more experience could help me. I found some programs on machine from previous user and i am trying to understand it i but i have few questions:
1. G53 code works only for one line i dont have to writ G54 after it? Line N220
2. What does code @714 do? Line N110 and N840.
3. In this program i found all T and D numbers from first turret how does machine knows D numbers from second turret because there are working both turrets with this program. Attached Files

Traub issues

Sat, 10/07/2017 - 00:42
Hello there,

I am completely new to CNC machines. I just bought a 1989. Traub TNS 30/42 with 3 revolvers and driven tools. I have 2 issues with it.

1) The chuck won't turn because it says the collet isn't closed. But it physically IS closed, and the bar sits tightly in it. The sensor for that glows green when the collet is open, and turns green/yellow when it closes. So, the sensor reacts. But I am not getting the status light on the front of the machine which should light up as an indicator that the collet is closed, nor will the chuck turn and I am getting an error.

2) The revolver No1 won't rotate it's head in either direction. Revolver No2 is ok, revolver No3 is ok, but the first one won't rotate the head to switch tools manually. Any ideas what it could be?

Thank you in advance, I would really appreciate any input on these matters.



New here

Thu, 10/05/2017 - 18:44
Just really getting into this. Have a lot to learn.

cutting a tapered v-groove using fusion 360

Mon, 10/02/2017 - 14:26
I am trying to cut a tapered v-groove along a cylinder. For the sake of argument it does not have to be on a cylinder. It could be on a rectangular block as well. I have tried many ways of 2D pocketing, slot, engraving, 2D conturing, and 2D adaptive clearing. The problem is simple but the solution is eluding me.

I have a 4 axis cnc that I built and can run pretty confidently. I do most of my designing in SolidWorks and I use Fusion 360 for my emulator and post processing. My machine uses Mach 3. below is a link to a video doing exactly what I want my machine to do. My setup is very similar. The 90 degree v-grooving bit is an edging bit for routers.

In this video you can see that the cylinder is not offset. The tool moves inward at the desired tapered angle (about 3 degrees) cutting the length then exiting and moving in about 100/1000's for each pass until the desired depth is achieved.

Short of writing the G-code by hand does anyone have a solution to my troubles. I appreciate your help.

New user

Sat, 09/30/2017 - 07:31
Hi, I


Fri, 09/29/2017 - 09:46
Hi all,
I have a waterjet cutting machine which was made in Japan, the control system is FAUNC O-MATE, which has a very long history (made in 1998). Due to my wrong operation, some of the parameter was lost. Now it was restarted by recovering the system and the linking IO with external hardware. But I have a very tough problem, my PC and RS232 of the machine cannot get communicated, and the NC procedure cannot be transferred to the FAUNC system, and the machine cannot work anymore. By checking information of FAUNC Series 0/00/0-Mate B-61404/08 (P394), this machine can support 4 kinds of external memory: FAUNC Handy File, FAUNC Floppy Cassette, FAUNC FA Card, FAUNC PPR, and the corresponding manual instruction are B-61834,B-66040,B-61274,B-58584. I need you help on the setting of parameter.742141971875294192.jpg Attached Images

High speed drilling speed and feeds

Thu, 09/28/2017 - 19:09
Running part that I need to reduce cycle time on. 1045 material and A36 material. Parts are running in haas vf5. Using a kennametal carbide tipped drill. It is 5d and I'm drilling 3 inches deep. What is potential issue , risk , or downside to running 7000rpm and 70 ipm.