Crowned Timing belt pulley
Print Profile(1)
Description
This is for the X axis of a laser cutter where the light weight XL timing belt spans about 2 feet. The problem is that standard timing belt pulleys require decent alignment. Alignment meaning that the axis of the drive pulley is parallel to the idler pulley. Any off alignment causes the belt to drift towards the flanges of either timing belt pulley. it seems that the tighter the belt tension the more the belt tends to drift. A belt that rubs against a flange causes drag which could lead to inaccuracy.
This model shows a crowned pulley with no side flanges. This is a 20 tooth pulley with a ¼" ID and two mounting holes for two 3mm plastic inserts. I don't think this combination would be exactly what someone would need, but simply demonstrates the concept using 3D printing. I attached the complete pulley and a STEP of just the tooth section.
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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