Editing a Mastercam post processor (the .pst file) allows you to customize the G-code output to match your CNC machine's specific requirements. 1. Preparation & Safety Always backup : Before making any changes, create a copy of your original .pst file and rename it (e.g., Original_Post.pst.bak ). Locate the file : Post processors are typically found in the Shared Mastercam\Posts directory on your computer. Use the right editor : Use the Mastercam Code Expert for syntax highlighting or a text editor like Notepad++. To open it from Mastercam, go to File > Edit/Open External . 2. Common Editing Tasks Post Processor Editing Class - CAD / CAM - Practical Machinist
In Mastercam, post processor editing is the process of customizing the script that translates CAM toolpath data into machine-specific G-code for a CNC machine. This ensures the output is perfectly compatible with a specific machine controller's requirements, such as including custom tool tables or specific canned cycles. New York University Key Components of a Post A complete "post" typically consists of three primary files: : The main script containing the logic for G-code generation. Machine Definition : Defines the physical parameters and axes of the machine. Control Definition : Sets the rules for how the controller interprets code, such as arc formatting or drilling cycles. support.qtemfg.com How to Edit Mastercam Posts You can modify these files using several different tools depending on your technical comfort level: Mastercam Code Expert : The built-in editor specifically designed for viewing and editing Post Developer Kit (PDK) : A dedicated professional toolset provided by Mastercam for creating and managing advanced post processors. External Text Editors : You can use editors like Visual Studio Code for manual script editing, provided the file is not encrypted (non- Machine/Control Definition Manager : Accessible directly within Mastercam for adjusting settings without manual coding. New York University Common Customizations Tool Tables : Modifying the post to automatically pull tool names or bin locations into the header of the G-code. Custom M-Codes : Adding machine-specific commands like air blasts (e.g., M83) or coolant triggers. Axis Rotation : Adjusting the post to support multi-axis movements like 3+2 or full 5-axis simultaneous motion. For complex edits, Mastercam provides official guides through their Help files and community support on forums like New York University Are you looking to make a specific change to your G-code output, such as adding a custom header or changing how tool changes are handled? Mastercam Post Processor User Guide - CLaME
Mastercam Post Processor Editing: A Comprehensive Guide Mastercam is a popular computer-aided manufacturing (CAM) software used by machinists and manufacturers to create and optimize G-code for CNC machines. One of the key components of Mastercam is the post processor, which plays a crucial role in converting the CAM software's output into a format that can be read by the CNC machine. In this article, we will explore the world of Mastercam post processor editing, including its importance, basic concepts, and step-by-step editing techniques. Why Edit Mastercam Post Processors? Post processors are essentially translators that convert Mastercam's output into a specific CNC machine's language. While Mastercam provides a range of built-in post processors for various CNC machines, there may be instances where a custom post processor is required. This could be due to:
Machine-specific requirements : Some CNC machines have unique requirements or quirks that are not addressed by standard post processors. Customization : Users may want to modify the output of the post processor to suit their specific needs, such as adding custom codes or changing the output format. New machine support : When a new CNC machine is introduced, a custom post processor may be needed to support it. mastercam post processor editing
Basic Concepts of Mastercam Post Processors Before diving into post processor editing, it's essential to understand the basic concepts:
Post processor files : These are text files with a .ppr extension that contain the code that translates Mastercam's output into CNC machine code. Post processor syntax : The syntax of a post processor file consists of a series of commands, variables, and conditional statements that control the output. Variables and parameters : These are used to store and manipulate data within the post processor, such as tool numbers, feed rates, and spindle speeds.
Step-by-Step Guide to Editing Mastercam Post Processors Editing a Mastercam post processor requires a basic understanding of programming concepts and the post processor syntax. Here are the general steps: Editing a Mastercam post processor (the
Open the Post Processor Editor : Launch Mastercam and navigate to the Post Processor Editor, usually found in the "Utilities" or " Tools" menu. Load the Post Processor File : Open the post processor file you want to edit, either by selecting it from a list or by browsing to the file location. Understand the Post Processor Structure : Familiarize yourself with the post processor's structure, including the sections, commands, and variables used. Make Changes : Use the Post Processor Editor's tools and syntax to make the desired changes, such as adding custom codes, modifying output formats, or adjusting variable values. Test and Validate : Test the edited post processor with a sample program to ensure it produces the correct output.
Common Post Processor Editing Tasks Some common tasks that may require post processor editing include:
Adding custom M-codes : Users may need to add custom M-codes to control specific machine functions, such as coolant or lubrication systems. Modifying output formats : Post processor editing can be used to change the output format, such as converting between inches and millimeters or changing the G-code syntax. Adjusting variable values : Users may need to adjust variable values, such as feed rates or spindle speeds, to optimize the machining process. Locate the file : Post processors are typically
Best Practices and Tips When editing Mastercam post processors, keep the following best practices and tips in mind:
Back up original files : Always make a copy of the original post processor file before making changes. Test thoroughly : Test the edited post processor with a variety of programs to ensure it produces the correct output. Document changes : Keep a record of changes made to the post processor, including the date, changes made, and reasons for the changes. Use version control : Consider using version control software to track changes and collaborate with others.