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Unread 03-12-2003, 15:25
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Re: 2D/3D Gear Design

Quote:
Originally Posted by Gadget470
I'm looking for a freebie gear maker, most likely in a macro form. I found this but it's only a 15 day trial then you have to pay. [Yes, the server is currently down, I know.]

Anywho, I've searched far and wide for another similar program but have come up with nothing. I understand how to make a standard spur type gear, but there are some that I can't grasp. I'm looking at miter and bevel gears out of the Small Parts Inc catalog and pulling other bits of information out of my Machinery's Handbook to try and make the gears on AutoCAD but it is a real pain.

Anyone know of an easier way to make gears?

I suggest CAD Register.com (Thomas Register)
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Unread 04-12-2003, 07:41
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Re: 2D/3D Gear Design

People please.. read the original post and replys by the original poster.

I Do Not Have Inventor.
I am looking for information on bevel gears.

I almost struck gold with what M said, but the drawings for bevel gears didn't include teeth on SPD-SI. However, those may be able to work for 2D Drawings. Clark, I have GearGen, but that works for Spur gears, which doesn't reeeeaaaaaly help me because while a bevel gear begins as a flared spur of sorts, i don't know the point where the tooth stops and begins because I'm only being given the Pitch circle.

Last edited by Gadget470 : 04-12-2003 at 07:47.
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Unread 11-12-2003, 13:26
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Re: 2D/3D Gear Design

Quote:
Originally Posted by Gadget470
I have GearGen, but that works for Spur gears, which doesn't reeeeaaaaaly help me because while a bevel gear begins as a flared spur of sorts, i don't know the point where the tooth stops and begins because I'm only being given the Pitch circle.
Would it be possible to take all of the information that you have, create a spur gear like 2D drawing, and extrude it using an appropriate taper angle?

indieFan
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Unread 17-12-2003, 13:20
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Re: 2D/3D Gear Design

Possibly, but I honestly don't know, see the gears have an odd shape, they are not actually conical from top to bottom. More like:

Code:
  /'__________'\
 /              \
 ¹---..    ..---¹   (Cut-away profile)
      |____|  

  /'__________'\
 /____      ____\  (would work w/ Taper Angle)
      |____|
Edit:
Better yet:

Last edited by Gadget470 : 17-12-2003 at 13:23.
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Unread 17-12-2003, 15:25
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Re: 2D/3D Gear Design

In looking at the bevel gear, what if the gear is created as if it were a simple taper angle. Then, for the outer angle, drawing a hollow cylinder with the appropriate taper on the inside and use subtract. For the inner angle, it would be a solid cylinder with the proper external taper and subtract that.

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