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  1. #1
    Join Date
    Aug 2011
    Posts
    0

    drilling on cylinder circumference

    I have a problem creating drilling operation for the part you can see on the image:



    There are many holes on the circumference and I don't know how to define the operations. What I managed to achieve is to define all the local coordinates for each row of holes (I assumed that if there are 36 holes on the circumference then I'll need 18 of them) and then used the tool to find holes on the given coordinates, that worked, but there must be easier way.

    I assume that there has to be a function to rotate the part. Then I could define only one set of cooridnates, drill and then rotate the part for set amount of degrees, drill again and so on untill all holes are made. Any ideas?

  2. #2
    Join Date
    Oct 2007
    Posts
    499
    Is your post set up for B/C axis work? If it is, then all you need to do is program one hole on each row and then apply a transformation (to do that, right click one the hole job and select "Transform")

  3. #3
    Join Date
    Aug 2011
    Posts
    0
    What do you mean by "B/C axis work"? I'm a complete newbie without any background education towards CNC

  4. #4
    Join Date
    Feb 2006
    Posts
    14
    here's a variant:


    #100=36 (NUMBER OF HOLES)
    #101=360/#100 (NUMBER OF DEGREES IN INDEXING)
    #102=0. (METERING A AXIS)
    G0 G90 X0 Y0
    G43 H01 Z150.
    M97 P1000
    G0 A0.
    X10.
    M97 P1000
    G0 A0.
    X20.
    M97 P1000
    G0 A0.
    X30.
    M97 P1000
    G0 A0.
    X40.
    M97 P1000
    G0 A0.
    G53 G49 Z0.
    M30
    N1000
    N1
    #102=#102+#101
    G00 A#102
    Z100.
    G81 G98 Z40. R98. F100.
    IF [#102LT359] GOTO 1
    G00 G80 Z150.
    #102=0
    M99


    greetings.

  5. #5
    Join Date
    Oct 2007
    Posts
    499
    Quote Originally Posted by merraton View Post
    What do you mean by "B/C axis work"? I'm a complete newbie without any background education towards CNC
    A, B & C axes are the rotary axes of the machine. How do you intend to rotate your part in front of the spindle? If you machine is a horizontal mill then the chances are your rotary axis is a B (unless you have an after market 4th axis fitted in which case it be an A axis). If your machine is a vertical mill with a 4th axis then it likely that your rotary is an A axis. The C axis is when the part rotates about an axis parallel to the spindle axis.

  6. #6
    Join Date
    Jul 2011
    Posts
    71
    Before you define your geometry, select the little blue arrow next to the define option and select 'Around 4th Axis' (I think thats what's called from memory). You will soon find out if your post processor is not setup as the gcode will contain nothing! If you don't have the option for 4th axis geometry definition, then your post processor is setup for XYZ only and needs to be setup for XYZC (C being the wrapping rotational Axis).

  7. #7

    Multi Axis Drilling

    Hi

    Take a look at this link. It shows another option that can be used called "Multi Axis Drilling". It may help you understand this better.

    Multi-Axis Drilling: SolidCAM CAD/CAM Software

    Also look at this related link.

    http://www.solidcam.com/solidcam-pro...-cylinder.html

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