×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

drip-feed mechanism in CNC

drip-feed mechanism in CNC

drip-feed mechanism in CNC

(OP)
CAN ANYBODY GIVE ME THE INFORMATION REGARDING DRIPFEED MECHANISM i.e. NC program transfer from PC to CNC Machine.

RE: drip-feed mechanism in CNC

I'm not sure what you mean.  If you are connecting to the RS232, you need the port settings in the manual.  The easiest way to transfer files to and from the CNC machine is using the floppy or a Deco box.  To completely run the machine from the PC (something which I was interested in, but really nobody can do) via the RS232 for a DNC connection (I believe that's the name, it's been 7 years) you are limited to the length of the cable (the signal won't travel accross the entire shop because of line noise) and if you are attempting to connect more than one machine (typically) you have to have switch boxes etc.  It really isn't worth the time.

RE: drip-feed mechanism in CNC

(OP)
Hi Dandrews

Thanks for the information. I am actually a Mechanical Engineer working as CAD/CAM Engineer. My Job is to model the parts of Dies/Moulds and generate the Manufacturing Code using CAD/CAM Software. Presently I am using MasterCAM.

 What actually I mean is Will There be any adjustment for transfering the data through RS232 port to the CNC machine and control the rate of transfer (i.e. slow or fast) apart from the Baud rate setting through any CAM Software. I am using MasterCAM for the transfer of NC program from the PC to CNC Machine but my production incharge says that the data transfer is very slow and I also wanted to know if the rate of transfer effects the Surface Finish.

RE: drip-feed mechanism in CNC

Suda,

The data transfer (DNC) "Direct Numerical Control" you speak of is really important.  I've been in this game over 20 years and in molds and dies it REALLY matters.

How fast you need you link to be is most often limited by your CNC machine - so go as fast as it can.

New CNC machines can read blocks really quickly, so you might want to consider "ethernet" if your machine can handle it. I just installed an ethernet machine connection and it's a big help

If you're stuck with serial, use xmodem or some other error correcting protocol !!!

If you machine has a disk drive, I usually find floppy drives and "sneaker-net" (you put on running shoes and run the floppy out to the machine) to be faster for larger files - of course Zip drives etc help even more for larger files.

If you have fast DNC then you don't need to store the file on the machine in most situations.

If someone has just "thrown you to the lions" with CNC/DNC CAD/CAM, and you and your company survive, You're one tough guy!

Good Luck!
Larry

RE: drip-feed mechanism in CNC

Dear Sudha
The speed of the drip feed mechanism to a cnc machine is very related by the type of the control of the cnc you are using. Usually the problem with the drip-feed is the gups(delay time) between blocks. Some controls, like Heidenhain, has the abillity by an M code to eliminate this problem. It would be very helpfull if you could tell me the control you are using.
Best Regards
Chris

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Research Report - How Engineers are Using Remote Access
Remote access enables engineers to work from anywhere provided they have an internet connection. We surveyed our audience of engineers, designers and product managers to learn how they use remote access within their organizations. We wanted to know which industries have adopted remote access, which software they are using, and what features matter most. Download Now
eBook - Managing the Context of Product Complexity Using the Digital Twin
Keeping track of changes to complex products is difficult—think Aerospace & Defense equipment, new generations of commercial aircraft, and software-based automobiles. A new way to managing the digital context of the physical product is required and the answer is the Digital Twin. This ebook explores the opportunity available for Operations and Maintenance for the Digital Twin. Download Now
White Paper - Trends in Industrial Filtration
Substantial progress has been made in filtration technologies in recent years. New filter media materials, designs and processes have led to filters that are more efficient, reliable, compact and longer lasting. This white paper will discuss the various trends that are impacting operational responsibilities of MROs today and the resources that are available for staying up-to-date on the latest filtration solutions. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close