Bearing housing problem


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  1. #1
    Member Mhook's Avatar
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    Default Bearing housing problem

    Hi
    I machining circles housing for bearings
    But machined surfaces very jerky and lot of corners
    Bearing housing problem-img_20171206_141645-jpg



  2. #2
    Member mactec54's Avatar
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    Default Re: Bearing housing problem

    Quote Originally Posted by Mhook View Post
    Hi
    I machining circles housing for bearings
    But machined surfaces very jerky and lot of corners
    Bearing housing problem-img_20171206_141645-jpg
    If you want a bore for a bearing, then you need to use a Boring head to bore the hole, not cnc mill it, you need a very good machine to be able to mill a bore for a Bearing

    Mactec54


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    Default Re: Bearing housing problem

    Use G8, it will help. in some parts I use an end mill for bearing bores and it works just fine. .0005" circularity and they press in great, with no G8 it has the same problem, its the feed ramps getting you. depending on the condition of your machine you can make good holes, if your thrust bearings, ball screws or motor couplers are bad, or your servos aren't tuned you may be way out of round. good luck

    put it in like this

    %
    N5 O1111 ( BEARING BORE 2372 )
    N30 G20 G8
    N35 G0 G17 G40 G49 G80 G90 H0 E0 Z0
    N40 ( 3/4 FLAT ENDMILL TOOL - 1 DIA. OFF. - 1 LEN. - 1 DIA - 0.75 )
    N45 T1 M6



  4. #4
    Member handlewanker's Avatar
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    Default Re: Bearing housing problem

    Put simply, as you already have the program set, CNC bore the hole to about 2mm undersize then use a boring bar with a single point tool or a boring head if you have one to get the hole to size.
    Ian.



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    Default Re: Bearing housing problem

    If your Fadal is a DC servo machine then you might want to check the resolvers, if there's any play in the shaft then you'll never get round or clean holes. Also check leadscrew compensation. As mentioned check leadscrew/thrust bearing/coupler condition/servo tuning.



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Bearing housing problem

Bearing housing problem