AP 238 -- STEP-NC Integrated CNC

Sample Programs

Create a product with the common STEP structure needed to get started with geometry.

Create a round hole feature with the parametric description (circular profile swept along a linear path) and a flat bottom condition.

TOLERANCE

Read a data file with geometry for a block and hole, then apply dimensions, datums, and tolerances to the faces.

TOOLPATH

Construct a STEP-NC toolpath, speed, and feed data with a high-level API and re-usable helper class.

Other Files

Use example working sets below if you generate your own C++ classes with the EXPRESS compiler. Contains recommended complex instance combinations (AND/ORs).

integrated_cnc_schema.ws: All entities and complex instances (CC4)
ap238_cc1.ws: Subset of entities used by CC1.
ap238_cc2.ws: Subset of entities used by CC2.
ap238_cc3.ws: Subset of entities used by CC3.
integrated_cnc_schema.nam: Short name abbreviations already installed in ST-Runtime.

Overview

EXPRESS source and associated files for STEP Part 238: Application Protocol for Computerized Numerical Controllers, commonly referred to as STEP-NC. The standard was published in 2007 as ISO 10303-238:2007(E).

Programming Libraries

For C++ programming, the ap238lib class library is pre-installed and provides AP238-specific classes for use with the ST-Developer ROSE programming library

Include File: stp_schema.h
Include Path: $(ROSE_INCLUDE)/ap238lib
Library Path: $(ROSE_LIB) with ap238lib.lib or -lap238lib
Class List
How to use

For Java programming, the ap238lib jar file is pre-installed and provides AP238-specific classes for use with the ST-Developer Java programming library

Import: com.steptools.schemas.integrated_cnc_schema
Jar File: $(ROSE)/lib/java/ap238lib.jar
Class List
How to use

STEP-NC Machine

STEP-NC Machine makes STEP-NC even easier with a desktop tool and high-level DLLs for creating machine programs from many sources, simulating cutting motion with machine tool models, and sending programs to a control.