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Okuma > Tool unclamp noise

Thread: Tool unclamp noise

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\r\n Tool unclamp noise\r\n

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\r\n Hello.
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\r\nI have a problem whit the toolchange in a MA40HA. It seems like the tool is not unclamped fast enough. The arm sometimes drags the tool out from the spindle whit a banging noise. I have taken the cylinders apart and checked the springs and the draw bar. It did not help. I bleeded the system and there seems to be no air in the hydraulic oil. The problem is present even whit a low tool change speed (25%).
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\r\nAre anybody having a idea what the cause could be?
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\r\nCould the hydraulic valve work too slow?
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\r\nThanks for any help!
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\r\nBest regards, Samuel\r\n
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    \r\n \r\n \r\n \r\n 04-30-2024, 09:43 AM\r\n \r\n \r\n \r\n \r\n #2\r\n \r\n \r\n \r\n \r\n \r\n
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    \r\n Martin_Pedersen\r\n \r\n
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    \r\n Re: Tool unclamp noise\r\n

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    \r\n Call a engineer, some of the MA40H has 2 stage unclamp cylinder, and a some of them has really difficult hydraulic system..
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    \nalso inside drawbar there a some ruller pins, that rust.
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    \nMy suggestion if yu are not sure about the mechanical parts then call local service.\r\n
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    \r\n Re: Tool unclamp noise\r\n

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    \r\n Check the two collets loose. First unclamp and then use collet fixing tool.\r\n
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    1. 04-26-2024, 03:00 PM #1
      vesene
      vesene is offline Registered
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      Tool unclamp noise

      Hello.

      I have a problem whit the toolchange in a MA40HA. It seems like the tool is not unclamped fast enough. The arm sometimes drags the tool out from the spindle whit a banging noise. I have taken the cylinders apart and checked the springs and the draw bar. It did not help. I bleeded the system and there seems to be no air in the hydraulic oil. The problem is present even whit a low tool change speed (25%).

      Are anybody having a idea what the cause could be?

      Could the hydraulic valve work too slow?

      Thanks for any help!

      Best regards, Samuel
      Reply With Quote Reply With Quote
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