Position Tolerance – Permissible Variation of Axis or Center Plane
Key Considerations
Tolerance Zone Shape & Size
Position tolerance zones may be circular, cylindrical, spherical, or between parallel planes. The shape directly impacts function and fit.
•Example (Hole):
A circular zone allows the hole center to vary within a circle.
A cylindrical zone allows the axis to tilt or shift within the cylinder.
Zone size defines the allowable positional variation and should be specified based on functional and precision requirements.
Types of position tolerance zone shapes:
• Position tolerance - Circular tolerance zone
• Positional tolerance - spherical tolerance zone
• Positional tolerance - parallel tolerance zone
Software Operation Demonstration
Click the link: How to implement geometric tolerance positional tolerances under ASME/ISO/GB in DTAS dimensional tolerance analysis & dimensional chain calculation software? _Bilibili_
DTAS 3D Position Tolerance Support
1.Multi‑Standard
Compliance
Supports ASME, ISO, and GB position tolerance definitions.
2.Flexible
Zone Shapes
Configurable as circular, spherical, or parallel‑plane tolerance zones.
3.Visual
Validation
Displays tolerance‑zone geometry in 3D for clear interpretation and validation.
DTAS 3D (Dimensional Tolerance Analysis System) is an advanced software suite that empowers engineers to perform rigorous static and dynamic tolerance simulation. By accurately modeling GD&T, assembly relationships, and motion, DTAS predicts manufacturing variation, identifies potential quality issues, and enables data-driven design decisions befor
DTOS (Dimensional Technical One Solution) is a proprietary, innovative platform for dimensional engineering, independently developed by DiTuo Technology. Built upon the core DTAS 3D Tolerance Simulation engine
