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Type: Posts; User: ghyman

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  1. Have I been using an illegal table all these years?

    I think this is the proper forum for this question; apologies if not.

    I'm setting up a new job for a customer, and have used a table in the Machinery's Handbook that I have been using for decades...
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    Re: Hex bar vs. Milling hex

    Hex bar will definitely save you cycle time, but you will also go through turning tools faster as the interrupted / varying depth of cut will cause the turning tools(s) to break down faster.
    ...
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    Re: Hold aluminum without marking surface

    Thanks; I've been considering either that or a vacuum fixture for op 20.

    I appreciate the input.
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    Hold aluminum without marking surface

    Our sales department sold a promise that I have been tasked with fulfilling, but I do not have a good idea how to proceed... Hopefully there are some workholding experts here who know an answer...
    ...
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    Re: code structures ...

    There are many reasons for Okuma re-loading the program under certain circumstances. One reason is the use of .ssb routines. If a subprogram has been edited, there is really no way for the control...
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    Re: Tool Wear Offset - Turn Milling

    Tell your CAM system the full diameter of the tool you are planning on using. (That is, the full diameter of a new tool.)

    Make certain to have the CAM software output the positions of the center...
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    Re: threading at bar diameter

    My "late-in-the-day-punt" ideas sometimes give happy little surprises; I had a similar problem on a Citizen several years ago - the fix was surprisingly simple.

    Use an opposite-handed threading...
  8. Re: Star SR20 front drilling head with adjustable angle

    I dug through some of my old programs and came up with this:

    G68.1 X Y Z R I J K
    where
    X = X dimension of the hole
    Y = Y dimension of the hole
    Z = Z dimension of the hole
    R = Degrees to...
  9. Re: Star SR20 front drilling head with adjustable angle

    It has been a few years, so I will have to defer to a few of the experts in this forum.

    Angled holes are a simple matter of doing a G68 to rotate the coordinate plane, then just use a standard...
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    Re: BobCAD Dupped me and no refund

    @Tech1AZ: Does the machine work at all using LaserDRW?
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    Tool Setter Performance and Expectations

    We have two different toolsetters at our shop (two different manufacturers) and have had a pretty significant list of issues with one of them - 2 software updates, hardware needing replaced, weeks...
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    Re: Another reaming question

    For starters, I have found that reamers generally do best if they have a little more material, especially in aluminum - My rule of thumb is 10% of the finished diameter; which makes it right about a...
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    Re: How to make custom threads

    Wow, I'm sorry.
    Maybe I should read the question before answering!

    First of all, check out the picture here for some good direction; I believe this image is also in the Machinery's Handbook.
    ...
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    Re: How to make custom threads

    With very few (if any) exceptions, Left-hand threads are identical dimensionally to the same Right-hand thread.

    Whatever dimensions a right-handed thread has will be the same for the left-handed...
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    Re: BREAKING BITS LIKE CRAZY

    I believe you said 5 flutes on this tool?

    We really need to know the feedrate, whether in feed per minute, feed per rev, or feed per tooth.

    You said it smells like it is burning - assuming it...
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    Re: Help ID Higbee thread

    I've had great luck using a G34 move in Z, followed by another G34 with a very small (~.010") Z move and a large X move at the same feedrate (The Z is necessary so the control can apply the feedrate...
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    Re: BREAKING BITS LIKE CRAZY

    > no big diference between 2mm and 2.5mm so I cut same speed / same rpm

    >The cut was very bad from the first track , like burning and brooke.

    Actually, the difference is 25%, which is not a...
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    Re: Is USB keyboard faster than PS/2?

    what kind / brand machine?

    I've never seen a machine control have any issues because of the keyboard speed.
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    Re: Bad surface finish in CNC lathe

    First thought: 0.2 for a depth of cut, especially on Aluminium, is very shallow. If it is 0.2 total, then it is only 0.1 per side... and that, in my experience, is too shallow a cut; the tool is...
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    Re: Okuma OSP-U100M Spiral pocket milling

    Check the "shrink the diameter" line; my initial post had the message end with a square bracket rather than a parenthesis.
    I'll be in the shop working on a few projects today; I'll plug this in and...
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    Re: Okuma OSP-U100M Spiral pocket milling

    OK, I'm done playing with it...
    I added RZLN variable, this will be the angle per straight-line move.
    Setting it at 90, for example, will produce a square shape (a "squiral?"), at 45 will give an...
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    Re: Okuma OSP-U100M Spiral pocket milling

    [deleted by author]
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    Re: Okuma OSP-U100M Spiral pocket milling

    If you want it in true G01/G02 arcs, then you are probably not going to find a "true" spiral as an answer.
    But if you break it up into small straight-line moves, it becomes pretty straightforward.
    ...
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    Re: pls, need some variable

    Glad it worked!

    If the power drops out during a tool change, then the variable may still contain the previous tool number, and of course, manually changing a tool.
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    Re: Don''t buy Renishaw

    Huh.
    I've always known them to be extremely helpful, even to the point of lending software support to a system created by a third party machine tool builder that used their own software to control...
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    Re: pls, need some variable

    VATOL is the tool number that is currently in the spindle on mills... a word of caution, VATOL contains the tool number from the most-recently completed tool change. 99% of the time, that should be...
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    Re: pls, need some variable

    Sorry, my bad... turning centers use VETLN rather than VATOL.
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    Re: Okuma LB3000-EX MYW 800

    1. I've worked on a number of projects that were centered around Okuma machines - and every time, I am surprised by their rigidity, stability, and accuracy. We set up 7 machines, fully tooled (50+...
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    Re: pls, need some variable

    VATOL is the tool currently in the spindle, so how about:

    VNSRX[VATOL]
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    Re: spindle speed in MDI

    I get the feeling you've been in the industry as long as I have.

    "G Code" has become a generic term (in Ohio, anyway!) for any sort of program code, regardless if MDI or full-blown program.

    I'm...
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