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Drill Abrasive Drum 3D Printer File Image 1
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Drill Abrasive Drum

Dagongar avatarDagongar

January 27, 2017

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Description

Drum to assemble strips of sandpaper.

I have made two designs:

  • 60 mm long x 50 mm in diameter, to use strips of 205x60 sandpaper. You can use standard roll paper 120 mm wide by cutting it in half.

  • 56 mm long x 66.8 mm in diameter, to be used with sheets of standard size paper (280x230), cut into 5 strips of 56x230 (see figure 6).

They are tested up to 3000 rpm, which is the maximum of my drill, no problems.

Necessary material (Image 1):

  • Printed drum and jaw.

  • M8 screw, hexagonal head, 100 mm of length.

  • M8 nut.

  • Lock washer for M8 to prevent loosening of the nut.

  • 1.5 mm diameter wire

Drum mounting:

  • Insert the jaw into the corresponding hole in the drum, aligning the hole of the jaw with that of the drum.

  • Insert the screw so that the head is fitted into the hexagon.

  • Bend the wire at 90º angle leaving 6 mm on the short side and 58 or 54 mm on the longest, depending on the drum we are mounting.

  • Insert the wire as shown in figure 2

  • Insert the washer and nut.

Mounting the sandpaper on the drum:

  • Make a curve at 20 mm from one end, leaving the abrasive out.

  • Place it on the drum as shown in figure 3 and push down.

  • Squeeze the sandpaper tightly around the drum.

  • Rotate the jaw to hold the sandpaper (Image 5).

  • Tighten the jaw by pushing with a screwdriver as shown in figure 4.

Notes:

  • The radius of the screw hole and the circumference of the hex head are designed to adjust with very little tolerance to avoid vibrations.

  • To cut the sandpaper, use a metal ruler and a cutter on the paper / fabric part, cutting it superficially (if you try to cut completely, you will lose the edge). Fold the paper by the mark and finish cutting by hand.

  • In version 1.1 the diameter of the screw hole has been reduced in 0,2 mm for a better fit.


Tambor para montar tiras de papel de lija.

He hecho dos diseños:

  • 60 mm de largo x 50 mm de diámetro, para usar tiras de papel de lija de 205x60. Se puede usar papel de lija en rollo estandar de 120 mm de ancho cortándolo por la mitad.

  • 56 mm de largo x 66,8 mm de diámetro, para usar con hojas de papel de lija de tamaño estandar (280x230) cortándolo en 5 tiras de 56x230 (Ver imagen 6).

Están probados hasta a 3000 rpm, que es el máximo de mi taladro, sin problemas.

Material necesario (Imagen 1):

  • Tambor y mordaza impresos.

  • Tornillo M8 de cabeza hexagonal de 100 mm de largo.

  • Tuerca M8.

  • Arandela para M8, preferiblemente rizada para evitar que se afloje la tuerca.

  • Alambre de 1,5 mm de diámetro

Montaje del tambor:

  • Insertar la mordaza en el hueco correspondiente del tambor, alineando el agujero de la mordaza con el del tambor.

  • Insertar el tornillo de modo que la cabeza quede encajada el en hueco hexagonal.

  • Doblar el alambre en ángulo recto dejando 6 mm en el lado más corto y 58 o 54 mm en el más largo, dependiendo del tambor que estemos montando.

  • Insertar el alambre como se muestra en la imagen 2

  • Poner la arandela y la tuerca.

Montaje del papel de lija en el tambor:

  • Hacer un doblez a unos 20 mm de un extremo, dejando el abrasivo hacia fuera.

  • Colocarlo en el tambor como se muestra en la figura 3 y empujarlo hacia abajo.

  • Tensar el papel de lija para que quede apretado alrededor del tambor.

  • Bascular la mordaza para que sujete el papel de lija (Imagen 5).

  • Apretar la mordaza empujando con un destornillador como se muetra en la figura 4.

Notas:

  • El radio del agujero del tornillo y el circunradio de la cabeza hexagonal están diseñados para que ajusten con muy poca tolerancia para evitar vibraciones.

  • Para cortar el papel de lija, usar una regla metálica y cutter por la parte del papel/tela, cortando superficialmente (si se intenta cortar completamente, se perderá el filo). Doblar el papel por la marca y terminar de cortarlo a mano.

  • En la versión 1,1 se ha reducido el diámetro del agujero del tornillo en 0,2 mm para un mejor ajuste.

License:

Creative Commons - Attribution - Non-Commercial

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