Base Plate/Fixture: Flatness tolerance ±0.01-0.05 mm/m

Q: What is the difference between a base plate and a fixture?

A base plate provides the foundational reference surface with standardized mounting features, while a fixture includes additional custom elements (clamps, locators) adapted for specific workpieces. Base plates are often modular components within fixture systems.

Q: How do I select the right material for a base plate?

Consider machining forces (steel for heavy loads), thermal conditions (stabilized materials for temperature variations), weight requirements (aluminum for manual handling), and corrosion resistance (coatings or stainless variants).

Component Specifications

Definition

A rigid structural component designed to provide a stable reference surface and mounting interface for securing workpieces during machining, assembly, or inspection processes. It ensures accurate positioning, repeatability, and vibration damping while maintaining dimensional stability under operational loads.

Working Principle

Utilizes mechanical clamping forces and precision locating features (pins, edges, surfaces) to immobilize workpieces against a reference plane, preventing movement during machining while maintaining accessibility for tooling.

Materials

High-strength aluminum alloy (e.g., 6061-T6, 7075-T6), hardened steel (AISI 4140/4340), cast iron, or composite materials with thermal stability and wear resistance

Technical Parameters

Parameter	Typical range	Notes & selection driver
Load Capacity	500-5000 kg depending on size/material
Surface Hardness	HRC 40-60 (steel variants)
Flatness Tolerance	±0.01-0.05 mm/m
Standard Grid Pattern	M8/M10 threaded holes at 25/50/100 mm spacing
Thermal Expansion Coefficient	<23×10⁻⁶/K (stabilized variants)

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 8525, DIN 6319, ISO 10791-7

Parent Products

This component is used in the following industrial products

Workpiece Clamping System

A mechanical system within the Edge Preparation Unit that securely holds and positions workpieces during edge preparation operations.

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Engineering Analysis

Risks & Mitigation

Workpiece displacement during machining
Thermal deformation affecting accuracy
Fatigue failure under cyclic loading
Corrosion in coolant environments

FMEA Triads

Trigger: Insufficient clamping force or worn locating features
Failure: Workpiece shift during machining
Mitigation: Regular torque verification of clamps, periodic inspection of locating pins/surfaces, implementation of redundant locating schemes

Trigger: Thermal gradients in manufacturing environment
Failure: Dimensional inaccuracy due to expansion/contraction
Mitigation: Use materials with low thermal expansion, implement temperature-controlled environments, allow thermal stabilization periods

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, flatness typically 0.01-0.1 mm depending on grade

Test Method

Coordinate measuring machine verification, laser interferometry for flatness, load testing per ISO 8525

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Base Plate/Fixture

Manufacturer profiles associated with Base Plate/Fixture.

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Frequently Asked Questions

What is the difference between a base plate and a fixture?