ISO 3686-1:2000

Overview

ISO 3686-1:2000 defines test conditions and acceptance-level criteria for high-accuracy single-column (single column type) coordinate drilling and boring machines with a fixed-height table and a vertical spindle. It specifies both geometric tests and machining (finishing cut) tests to verify machine accuracy, and it references ISO 230-1 for installation, measuring methods and test-code principles. This part does not cover jig borers or machining centres and focuses on verification of accuracy (not dynamic behaviour such as vibration or speed/feed characteristics).

Key topics and technical requirements

• Machine type covered: Vertical-spindle, single-column coordinate drilling and boring machines (single spindle/turret head variants noted where relevant).
• Test categories:
  • Geometric tests (clauses 5.x): linear axes straightness, squareness, table flatness and parallelism, spindle run-out and axial behaviour.
  • Machining tests (clause 6): finishing-cut machining checks to confirm practical positional accuracy.
• Representative tolerances (examples given in the standard):
  • Straightness of X-axis in XY plane: 0.015 mm for measuring length up to 1 000 mm (G1).
  • Squareness X–Y for 500 mm: 0.02 mm (G2).
  • Squareness table surface to Z-axis: 0.015 mm for 300 mm (G3/G4).
  • Table flatness: 0.03 mm up to 1 000 mm, add 0.01 per additional 1 000 mm, max 0.05 mm (G5).
  • Table parallelism to X/Y: 0.015 mm for 300 mm, max 0.03 mm (G6).
  • Spindle taper run-out: 0.01 mm near nose, 0.02 mm at 300 mm (G9).
  • Periodic axial slip / camming: 0.01–0.02 mm depending on the check (G10).
• Measuring instruments and methods: dial gauges (0.001 mm resolution), straightedges, precision levels, taut wire/optical methods, test mandrels, interferometers; instruments must meet the accuracies indicated and are aligned with ISO 230-1 practices.
• Units and conventions: metric (mm) for linear, degrees/ratios or microradians for angular; minimum tolerance floor of 0.005 mm is noted where scaling applies.

Practical applications and users

ISO 3686-1:2000 is used for:

• Acceptance testing and factory/field commissioning of coordinate drilling and boring machines.
• Quality assurance and routine verification in production, maintenance, and repair shops.
• Machine tool manufacturers for design verification and documentation of guaranteed performance.
• Metrology labs, machine inspectors, and purchasing/specification teams to define and verify contractual accuracy requirements.
• It helps ensure machines meet required positional and geometric accuracy for precision drilling, boring and light finishing/milling operations.

Related standards

• ISO 230-1:1996 - Test code for machine tools (geometric accuracy; referenced for installation and measuring procedures).
• ISO 3686-2 - Part 2: Portal type machines with moving table (companion document for other machine configurations).

Keywords: ISO 3686-1:2000, coordinate drilling and boring machines, accuracy testing, geometric tests, machining tests, single column machines, spindle run-out, table flatness, ISO 230-1.