Torch Table Bill of Materials

=Oxy-acetylene Torch= Source for the torch: http://www.dynatorch.com/OxyFuelKit.htm

Introduction
The term Machine Torch refers to a 3-hose or 2-hose oxy-acetylene torch nozzle that is used on automated CNC torch cutting tables. The 3-hose version features automatic oxygen blast, engaged via a solenoid. The 2-hose version requires manual toggle of the oxygen blast.

Add flashback arrestors to the regulator, as the machine torch typically does not have flashback arrestors. 

Searching

 * $370 3-hose torch -
 * $450 -
 * Bugo -
 * HARRIS Machine Torch New Tips Cutting Track Burner Weld $279.99
 * Airco 2621 Machine torch Used Cutting Torch & Rack $650
 * SMITHS LITTLETORCH 11-1101C OXY ACETYLENE WELD TORCH $99.00
 * Thermal Dynamics 1-1320-1 Cutmaster 101 Plasma Cutter $2,099.00

More Searching

 * 3-hose torch: http://cgi.ebay.com/Koike-Style-Oxygen-Acetylene-Machine-Torch-Oxy-Acety-/310228372868
 * 2-hose torch: http://cgi.ebay.com.sg/Victor-Style-Heavy-Duty-Machine-Cutting-Torch-298-2F-35-/400102570634
 * Victor 2-hose -
 * Victor short barrel $200 used -

Recommendations

 * http://www.cnczone.com/forums/showthread.php?p=606570#post606570 Oxweld

Industry Standards

 * standard 1-3/8" (35mm) diameter machine torch

=Stepper motors=  See Also Stepper Motor

From Xylotex.

Stepper motors:



Controller:



Possible limit switch configuration:



Setting fractional steps on stepper motors:



Specs

 * 1/4" shaft
 * 425 in oz torque
 * about 50 W power usage



The XS-3525/8S-4 microstepping stepper motor driver is the perfect choice for CNC retrofitting of desktop and small benchtop milling machines. Connect bipolar wired stepper motors, power, and parallel port signal source.


 * Small Size 4.275 x 2.8? inches.
 * Drives up to 35 Volts @ 2.5 A/phase
 * 4 different microstepping step levels from Full-Step(FS) to 1/8 step
 * Filtered & Buffered Step & Dir lines
 * Built in DC-DC converter for +5V
 * Break-out screw terminals for I/O

Microstepping Truth Table

1 means jumper NOT installed

The XS-3535/8S-4 Stepper Driver is a 4 axis pulse-width-modulated (PWM) current controlled bipolar micro-stepping controller. Each axis drive has a +-2.5 Amp/phase @ 35 Volt maximum continuous Output Rating. The drive circuitry has thermal shutdown protection and crossover-current protection. Synchronous rectification circuitry eliminates the need for external clamp diodes in most applications. Each axis accepts Step & Direction signals, along with 2 jumper inputs to define microsteps per full step.

The board is of 4-Later construction with Isolated Power and Logic supply planes. The drive circuitry has a heat sink attached to allow cooler operation.