An X-Y cutting table for a handheld powermax 350 plasma torch

Date of Publication


Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Manufacturing Engineering and Management


Gokongwei College of Engineering


Manufacturing Engineering and Management

Thesis Adviser

Mark Jansson L. Kho

Defense Panel Chair

Oscar G. Unas

Defense Panel Member

Edgardo Guison
John-John P. Cabibihan


The X-Y cutting table for a handheld powermax 350 plasma torch is a device that produces shapes drawn in AutoCad2000 within ± 1.0 mm tolerance. The accuracy of the table would depend greatly on its ability to convert a DXF file of the design into commands that the motor can accurately understand. Furthermore, controlling the speed of the cutter would produce a good quality cut.

To achieve the above objective, cutting speed was taken into consideration. A program was written and tests were conducted to check whether 80-90% of the recommended speeds were attained. The cutter's travel time was measured with the use of a stopwatch while it took different paths. Each path was tested using speeds ranging from 50 mm/min to 2,500 mm/min. Results showed that actual time vs. theoretical time yielded a minimal difference, having an average error of 0.9859%.

The software was checked in respect to how the stepper motors would respond to commands coming from the program. Repetitive cutting squares was performed. Forty-eight squares using two kinds of metal (stainless and mild steel), with speeds ranging from 748 mm/min to 1,967 mm/min, three trials per speed generated results identical to the DXF file.

The X-Y cutting table for handheld powermax 350 plasma torch was able to meet all its objectives. While producing a cutting table that could perform all its main functions, other features such as user-friendly speed control, position control, cutting simulator, plasma holder positioning and other safety measures were also added to a cutting table that is both accurate and precise.

Abstract Format






Accession Number


Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

v, 57, [65] leaves : ill. ; 28 cm.


Plasma arc cutting; Metal cutting

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