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| Posted by: jordyandyo ® 04/24/2008, 12:00:47 Author Profile eMail author Edit |
Hi!
We currently have one electric/pneumatic hammer which we are hoping to modify to perform a wider range of tasks, however, we need to know the compression force which this hammers striker is producing of before we can design the frame around it. Is there a specific machine or a type of engineer which we could contact that will carry out this type of measurement? Regards,
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| Posted by: FerretMK4 ® 05/15/2008, 15:26:58 Author Profile eMail author Edit |
You must be holding the hammer in some manner already, so that's your first clue as to what is required. Impact hammers produce much higher surface pressures at the tool tip than are present on average in the hammer mounting structure - this is the whole idea behind using an impact hammer instead of say a pressure roller or press. The mass of the tool tip is much less than the mass of the hammer driver so the tool tip can have high accelerations and high impact forces without generating similarly high acceleration and forces in the mounting of the driver. The inertia of the driver vs the inertia of the tool is the key. Measuring the actual force at the tool tip and using that force value to design a mounting structure will result in a grossly overdesigned structure. Your mount will be subject to high vibratory forces but not awfully high average forces, so you should be looking at some sort of compliant mounting system... rubber bushings and such, to avoid fatigue failures. Impact tools are often hand-held so the user's arms act as the dampers that reduce the peak loads. If you mount it in a structure, the structure should have a similar damped mount to hold the hammer. |
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| Posted by: Marky ® 04/24/2008, 13:34:31 Author Profile eMail author Edit |
Jordan...1st...Have you tried contacting the hammer manufacturer to see if they help? 2nd you did the right thing and put Whiskey in the post...Now you'll get tons of help. |
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| Posted by: jordyandyo ® 04/24/2008, 17:22:39 Author Profile eMail author Edit |
Haha! Thanks Mark! The machine we have has been with the company for a long while, and unfortunately, the manufacturers are no longer in business. It would have been ideal if i could have gotten hold of some information about it from them...even a manual....but it's all gone! Can't beat good old Whisky..... Cheers,
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