Building a Mendel in 2021. What would you choose? October 12, 2021 10:46AM |
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Re: Building a Mendel in 2021. What would you choose? October 12, 2021 11:21AM |
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Re: Building a Mendel in 2021. What would you choose? October 12, 2021 06:26PM |
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Re: Building a Mendel in 2021. What would you choose? October 12, 2021 07:05PM |
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Re: Building a Mendel in 2021. What would you choose? October 12, 2021 07:41PM |
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Re: Building a Mendel in 2021. What would you choose? October 12, 2021 09:00PM |
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Re: Building a Mendel in 2021. What would you choose? October 13, 2021 04:43AM |
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Re: Building a Mendel in 2021. What would you choose? October 14, 2021 08:42AM |
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Quote
ComeWhatThey
I’m aware that there’s been much discussion about the drawbacks of the design and there are good reasons why more modern designs have largely moved away from trapezoidal shapes.
Generation 7 Electronics | Teacup Firmware | RepRap DIY |
Re: Building a Mendel in 2021. What would you choose? October 14, 2021 10:44AM |
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Re: Building a Mendel in 2021. What would you choose? October 15, 2021 09:20PM |
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Re: Building a Mendel in 2021. What would you choose? October 16, 2021 10:08AM |
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Re: Building a Mendel in 2021. What would you choose? October 16, 2021 06:07PM |
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Re: Building a Mendel in 2021. What would you choose? October 16, 2021 06:35PM |
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Re: Building a Mendel in 2021. What would you choose? October 18, 2021 11:24PM |
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Quote
I can make a couple recommendations regarding that design. It appears to use a stacked belt corexy mechanism. Notice that right at the motors the belts bend 90 degrees and at the opposite corners the belts simply loop 180 degrees around the pulleys. If you count up all the pulleys that each belt bends around, you'll find 7 including the drive pulley. That's a LOT of pulleys, each of which adds to the load on the motor. Why not eliminate the bend in the belt right at the motor mount and simply put the motor at the opposite corner where the belt is making a 180 degree bend around that pulley anyway? That reduces the pulley count to 5. 5 pulleys vs 7, what's the big deal? If you ever get a chance to manually push a corexy mechanism around by hand, try moving the extruder carriage in the Y direction. You'll find it pretty easy. Now try moving it in X. It is much harder because that motion requires the belts to move at all the pulleys. That difference represents additional load on the motors, and will ultimately be one of the limits to speed/jerk/acceleration of the mechanism. Adding 4 more pulleys will have an effect.
Re: Building a Mendel in 2021. What would you choose? October 19, 2021 08:07AM |
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Re: Building a Mendel in 2021. What would you choose? October 21, 2021 01:21AM |
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Re: Building a Mendel in 2021. What would you choose? October 26, 2021 12:05PM |
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Re: Building a Mendel in 2021. What would you choose? November 10, 2021 01:48PM |
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Re: Building a Mendel in 2021. What would you choose? November 21, 2021 11:03AM |
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