CNC Torch Table

Main > Digital Fabrication > RepLab Tools > Torch Table

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CNC Torch Table Prototype I, used in 2011 Production Run

Torch Table Prototype II Design.

The CNC Torch Table (aka RepTab) is a computer controlled machine that quickly cuts intricate patterns out of large steel sheets, that are difficult to cut by hand. The machine should be able to interpret DXF files and cut out the defined parts.

Many parts that make up the 50 GVCS Tools can be cut on the CNC Torch Table, making this machine valuable for replication.

Electronics

• Steppernuglabeled.svg

The CNC Torch Table uses the heavy duty Electronics Case with open-source stepper drivers called Steppernug

Status

CNC Torch Table Prototype II

Design is finished. Stepper motor controller is under way.

• Sketchup Model
• Solidworks model - In progress
• First Run of Prototype II:

• Results: the mechanical structure is robust and lends itself to torch and CNC wood milling operations. Gantry design by Ben Horton. The innovation here is the Arduino-based stepper motor controller, Steppernug - which can be milled on a CNC circuit mill. This system is a replacement for a proprietary version equivalent to the Gecko G540 in terms of current-handling ability.
• Computer Control Overview

Materials

Get fasteners from Boltdepot

Metric hex nuts, Stainless steel 18-8, 5mm x 0.8mm --- x12 x-axis and y-axis motor mounting (4 per motor)

Metric socket cap, Stainless steel 18-8, 5mm x 0.8mm x 10mm --- x4 z-axis motor mounting

Metric socket cap, Stainless steel 18-8, 5mm x 0.8mm x 16mm --- x12 x and y-axis motor mounting

Cutting Torch

plasma vs oxyfuel comparison

• Oxyacetylene, oxypropane, oxy-biogas. Oxygen: commercial bottled gas or on-site oxygen generator (purchase [1],[2]) (build [3]). Steel only. Best on thick (1 inch +) steel.
• Plasma torch. Cuts aluminum, stainless, others in addition to steel. PP60 Everlast_Plasma_Cutter (alternate Everlast_PowerPro_256). Plasma gas: air or oxygen

Additional (non-Torch) Tool Functions

As a large x-y-z coordinate table, the Torch Table has potential applications with other tooling besides a cutting torch. One limitation is that the drive system is not powerful enough or stiff enough to support heavy cutting-tool forces.

A modular tool mounting (possibly dual mounting, so two tools could be available simultanously) would facilitate tool changeover.

Additional discussion at TorchTableModularTooling

CNC Torch Table Prototype I

CNC Torch Table 1

Product Ecology

General Fabrication Product Ecology

Made with

• Induction Furnace - Steel
• Multimachine - Precision Guides, bearings

Creates

• Tractor - Plates, holes
• CEB Press - Holes
• QA Plates

See Product Ecologies for more information.

Videos

See Also

CNC Torch Table Crash Course

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