ISO 4703:2001 PDF

Overview

ISO 4703:2001 specifies test conditions and acceptance checks for surface grinding machines with two columns used for grinding slideways. It defines the geometric tests, machining tests (finishing cuts only) and the procedures for checking the accuracy and repeatability of positioning on general-purpose and normal-accuracy two-column surface grinders with a movable table. The standard is limited to verification of machine accuracy (not to operational characteristics such as vibration, speeds or feeds) and excludes machines with fixed or rotary tables.

Key topics and requirements

• Scope and applicability
  • Applies to two-column surface grinding machines with rectilinear grinding movements and a movable table.
  • Excludes fixed-table or rotary-table designs.
• Reference standards
  • Requires reference to ISO 230‑1 (geometric accuracy/no-load tests) and ISO 230‑2 (NC axis accuracy and repeatability).
  • Uses ISO 841 for terminology and axis designations.
• Installation and environmental conditions
  • Specifies foundation, isolation and thermal considerations (e.g., hydraulically driven tables require stabilization with coolant; ambient temperature variation during testing should not exceed 2 °C).
  • Machine should be placed in the test environment at least 24 hours prior to testing.
• Geometric tests
  • Tests include straightness and angular deviations of X, Y and Z axes, squareness between axes, and wheelhead movement checks.
  • Tolerances are expressed in millimetres and as angular deviations per unit length (e.g., straightness tolerances such as 0.02 mm for certain measuring lengths; minimum tolerance value set at 0.005 mm).
• Machining tests
  • Machining tests use finishing cuts only; roughing cuts are excluded to avoid cutting-force distortion.
• Measuring instruments and accuracy
  • Examples: optical methods, precision levels, straightedges, dial gauges (resolution at least 0.001 mm).
  • Instruments given are examples - equivalents with equal or better accuracy are acceptable.

Practical applications and users

• Who uses ISO 4703
  • Machine tool manufacturers, test laboratories, acceptance inspectors, metrology and quality engineers, commissioning teams and large industrial end users who specify acceptance tests for new or installed machines.
• Typical uses
  • Factory acceptance testing and on-site commissioning
  • Verification after installation, foundation or thermal changes
  • Periodic accuracy checks and preventive maintenance validation
  • Supplier–buyer acceptance criteria for slideway grinding machines

Related standards

• ISO 230‑1:1996 - Test code for machine tools - Part 1: Geometric accuracy
• ISO 230‑2:1997 - Test code for machine tools - Part 2: NC axis accuracy and repeatability
• ISO 841 - Machine tool terminology (axis designations)

Keywords: ISO 4703, surface grinding machines, two columns, slideways, testing accuracy, geometric tests, machining tests, positioning repeatability, ISO 230-1, ISO 230-2, machine tool testing.