How to Generate SolidWorks CAM Post Processors for HAAS, Siemens, and FANUC

How to Generate SolidWorks CAM Post Processors for HAAS, Siemens, and FANUC

In the world of computer-aided manufacturing (CAM), creating a seamless integration between design software and CNC machines is critical for efficient and precise production. SolidWorks CAM, a powerful tool for designing and manufacturing, allows users to generate post processors tailored for specific CNC machine brands such as HAAS, Siemens, and FANUC. This guide will walk you through the process of generating post processors for these popular CNC systems.

Understanding Post Processors

A post processor is a vital component in the CAM workflow. It translates toolpath data from the CAM software into machine-specific code (G-code) that CNC machines can interpret and execute. Each CNC machine brand has unique requirements and configurations, making post processors essential for accurate and reliable machine operations.

Step-by-Step Guide to Generating Post Processors in SolidWorks CAM

1. Preparation and Setup

Before generating post processors, ensure that you have the following:

  • A licensed version of SolidWorks with CAM capabilities.
  • Detailed machine configuration and controller specifications for HAAS, Siemens, and FANUC machines.
  • Basic knowledge of G-code and CNC machine operations.

2. Accessing the Post Processor Generator

  1. Open SolidWorks CAM: Launch SolidWorks and open the CAM environment.
  2. Navigate to the Post Processor Generator: This tool is typically found under the CAM tab or through the SolidWorks CAM feature manager.

3. Creating a New Post Processor

  1. Select Machine Type: Choose the type of machine (e.g., milling, turning) for which you need to generate the post processor.
  2. Enter Machine Specifications: Input detailed specifications such as axis configuration, spindle speed, feed rates, and tool change commands.

4. Configuring the Post Processor for Specific Brands

For HAAS Machines:
  • G-Code Format: HAAS machines typically use standard G-code format with some brand-specific commands.
  • Parameter Settings: Configure parameters such as coordinate system, tool length offset, and canned cycles specific to HAAS machines.
For Siemens Machines:
  • Siemens-Specific Commands: Siemens controllers often use a different syntax and may require specific commands for tool changes and cycles.
  • Advanced Settings: Utilize advanced settings to accommodate Siemens’ unique features like ShopMill or ShopTurn.
For FANUC Machines:
  • Standard G-Code: FANUC controllers are known for their adherence to standard G-code with some proprietary extensions.
  • Macro Commands: Include any necessary macro commands that FANUC machines might use for specific operations.

5. Testing and Validation

  1. Generate Sample G-Code: Use the post processor to generate a sample G-code file based on a test part design.
  2. Simulate in Virtual Environment: If possible, simulate the G-code in a virtual environment or CNC simulator to check for errors and ensure compatibility.
  3. Physical Test: Run the generated G-code on the actual CNC machine (HAAS, Siemens, or FANUC) to verify proper operation and make any necessary adjustments.

6. Fine-Tuning and Optimization

  • Feedback Loop: Gather feedback from machine operators and make iterative adjustments to the post processor settings.
  • Customization: Customize the post processor for specific tasks or complex operations to maximize efficiency and accuracy.


Generating post processors for HAAS, Siemens, and FANUC machines in SolidWorks CAM involves understanding the unique requirements of each machine brand and configuring the post processor accordingly. By following this guide, you can create precise and reliable post processors, ensuring smooth transitions from design to production and enhancing overall manufacturing efficiency.

For more detailed instructions and advanced configurations, refer to the SolidWorks CAM documentation and support resources. Happy machining!

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