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Chariot / carriage

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Creation quality: 5.0/5 (1 vote)
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  • Ascenseur-Tendeur.STL
  • Ascenseur_court.STL
  • Ascenseur_haut.STL

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Publication date 2022-12-06 at 20:29
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Published to Thingiverse on: 2017-07-18 at 00:58
Design number 951168

3D printer file info

3D model description

--- Français (English below) ---

-> Cette pièce est un élément de l'imprimante 3D Delta pliable DeltaFold

Voici deux variantes d'un chariot conçu pour se déplacer le long d'un profilé aluminium 20x20 de type V-Slot. Les déplacements sont pilotés par une courroie GT2 dont la tension est réglée par le tendeur. La liaison avec les tiges reliées à l'effecteur est assurée par deux aimants fraisés distants de 45mm entre axes.
L'effecteur magnétique d'entre-axe 45mm associé à ces chariots se trouve ici : https://www.thingiverse.com/thing:2024371

J'ai conçu deux versions de ce chariot pour vérifier s'il y a une différence de qualité d'impression entre les deux modèles. Je suppose que la variante avec les aimants au centre de du chariot offre le meilleur résultat. En effet, les tiges qui relient le chariot à l'effecteur exercent des contraintes sur le chariot, les repoussant vers l'extérieur de l'imprimante. Plus les points d’application des forces (donc les aimants) sont éloignés du centre du chariot et plus le bras de levier est important. Par conséquent, les mouvements indésirables devraient être amplifiés avec le modèle de chariot possédant les fixations d'aimants en haut. Reste à voir si les contraintes exercées par les tiges sont suffisantes pour affecter la qualité d'impression... Sinon l'avantage de déporter les aimants vers le haut est que l'on gagne 4cm de hauteur d'impression.
N'hésitez pas à me faire vos retours d’expérience en postant un commentaire.

NB : Les supports matériels nécessaires sont inclus dans le design, inutile d'activer cette fonctionnalité du slicer.

L'assemblage d'un chariot compte deux pièces imprimées :
- un chariot
- un tendeur

Quincaillerie pour un chariot :
- 3x Roues :
- 1x roue type Solid V Wheel (pneu + 2 roulements 625ZZ + rondelle de précision m5)
- 1x Vis M5x25 (pour fixer la roue)
- 1x rondelle courte M5
- 1x Réglage de butée Home :
- 1x Vis M3x20
- 2x Ecrou M3
- 1x Tendeur de courroie :
- 1x Vis M3x25
- 1x Rondelle courte M3
- 1x Ecrou M3
- 1x Serrage sur profilé alu 20x20
- 1x Vis M3x25
- 1x Ecrou M3
- 2x Aimants fraisés D12 d4 e4.75

Préparation

  1. Imprimez et nettoyez les deux pièces
  2. Supprimez les supports d'impression du chariot
  3. Vérifiez que tout s’emboîte correctement

Assemblage

Inutile de rentrer dans une longue et ennuyeuse description, ça se monte comme sur la photo :)


*--- English --- *

-> This piece is an element of the foldable Delta 3D Printer DeltaFold

Here are two variants of a carriage adapted to slide along a 20x20 V-Slot type aluminium profile. The moves are controlled by a GT2 belt whose tension is adjusted by the tensioner. The connection with the rods connected to the effector is provided by two countersunk magnets spaced by 45mm between axes.

The displacement is controlled by a GT2 belt whose tension is adjusted by the tensioner. The connection with the rods connected to the end effector is provided by two spaced countersunk magnets 45mm between axes.
The magnetic effector with 45mm between-axle associated with these carriage can be found here : https://www.thingiverse.com/thing:2024371

I designed two versions of the carrier to test if there is a difference in print quality between the two models. I guess the variant with magnets on the centre of the carrier provides the best result. Indeed, the rods which connect the carriage to the effector exert constraints on the carriage, pushing them outwardly of the printer. More the points of application of forces (thus the magnets) are away from the centre of the carriage, and more the lever arm is important. Therefore, undesirable movements should be amplified with the carriage model having the magnet mountings on the top. It remains to see if the stresses exerted by the rods are sufficient to affect the print quality. . . Otherwise the advantage to deport the magnets up is that we gain 4cm print height.
Do not hesitate to make me your feedback by posting a comment.

NB: All necessary materials support are included in the design, no need to activate this feature in the slicer.

The assembly of a carriage has two printed parts :
- a carriage
- a tensioner

Hardware for one carriage :
- 3x Wheels:
- 1x wheel Wheel Type Solid V (tire + 2 x 625ZZ bearing + 1x M5 precision washer)
- 1x M5x25 screws (to fix the wheel)
- 1x M5 short washer
- 1x Home end stop adjustment screw :
- 1x M3x20 screw
- 2x M3 Nut
- 1x Belt tensioner :
- 1x M3x25 screw
- 1x M3 short Washer
- 1x M3 nut
- 1x Tightening on aluminium profile 20x20
- 1x M3x25 screw
- 1x M3 nut
- 2x countersunk D12 Magnets d4 e4.75

Preparation

  1. Print and clean the two parts
  2. Remove the print support material
  3. Make sure all fits correctly

Assembly

No need to go into a long and boring description, it's mounted as show on the picture. :)

3D printing settings

-

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