ISO 13041-3:2009

Overview

ISO 13041-3:2009 specifies the geometric tests and applicable tolerances for general-purpose, numerically controlled (NC) turning machines and turning centres that feature inverted vertical workholding spindles. By referencing ISO 230-1 and ISO 230-7, this standard ensures that machine tools with unique spindle configurations are assessed for geometric accuracy, providing critical guidance for manufacturers and users aiming to verify the precision of these advanced machining centres. The document outlines terminology, machine configurations, and controlled axes relevant to NC turning machines with inverted vertical spindles.

Key Topics

• Geometric Accuracy Verification: ISO 13041-3:2009 details methods for assessing the precision of machine geometry, including spindle alignment, axes parallelism, angular deviations, squareness, and straightness of movement.
• Applicability: The standard applies specifically to NC turning machines and turning centres with inverted vertical spindles, not to those with conventional spindle arrangements.
• Machine Configurations: Outlines three base configurations of machines, including features like turrets and power-driven tools, and recognizes flexible setups (e.g., machines integrated into a flexible manufacturing system).
• Terminology and Axis Designation: Establishes clear nomenclature for machine components and defines the designation of controlled axes to improve clarity and global consistency.
• Test Methods and Instruments: Specifies approved measurement methods and scenarios, referencing ISO 230-1 and ISO 230-7 for equipment setup, measuring procedures, and tolerance criteria.
• Software Compensation: Addresses the possibility and documentation requirements for using software compensation during geometric tests.

Applications

• Machine Acceptance and Quality Control: ISO 13041-3:2009 is essential for manufacturers and purchasers involved in acceptance testing and quality assurance of NC turning machines with inverted vertical spindles. It ensures that equipment meets documented geometric accuracy standards before being commissioned for production.
• Machine Tool Benchmarking: By following the geometric testing procedures, users can benchmark the performance of their turning centres against international criteria, aiding in equipment comparisons and process optimization.
• Machine Maintenance and Calibration: The standard’s procedures are also valuable for periodic machine inspections, maintenance planning, and calibration of geometric features to ensure ongoing manufacturing accuracy.
• Procurement Specifications: Engineers and procurement specialists can reference ISO 13041-3:2009 when specifying, purchasing, or upgrading NC turning machines, ensuring alignment with recognized international quality benchmarks.
• Training and Technical Documentation: The terminology and methodology outlined in the standard assist technical staff and trainers in understanding and communicating the critical aspects of machine tool geometry.

Related Standards

Several key international standards complement and support the application of ISO 13041-3:2009, including:

• ISO 230-1: Test code for machine tools - Part 1: Geometric accuracy of machines operating under no-load or finishing conditions. This is the primary reference for geometric accuracy test methods.
• ISO 230-7: Test code for machine tools - Part 7: Geometric accuracy of axes of rotation, providing guidance on rotational components.
• ISO 13041-1: Geometric tests for machines with a horizontal workholding spindle.
• ISO 13041-2: Geometric tests for machines with a vertical workholding spindle (non-inverted).
• ISO 13041-4 to ISO 13041-8: Cover additional aspects such as axis positioning accuracy, thermal distortions, and performance in coordinate planes.

By adhering to ISO 13041-3:2009, stakeholders ensure that NC turning machines and turning centres with inverted vertical spindles meet stringent international requirements for geometric accuracy, enhancing reliability and productivity in metalworking and advanced manufacturing environments.