Editorial Technical Reference

Worktable

This page explains how Worktable is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The primary supporting surface of a CNC machine tool where workpieces are mounted, positioned, and secured during machining operations.

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Product Specifications

Technical details and manufacturing context for Worktable

Definition
A worktable is a critical structural component of CNC machine tools that provides a stable, flat reference surface for holding workpieces during precision machining processes. It serves as the foundation for workpiece fixturing, ensuring accurate positioning relative to cutting tools while withstanding machining forces and vibrations. Worktables are engineered to maintain dimensional stability under load and thermal variations, directly impacting machining accuracy and repeatability. Typical materials include cast iron, steel, and granite composite, each offering different trade-offs in damping, stiffness, and thermal stability. The table size ranges from 400x400 mm to 2000x4000 mm, accommodating various workpiece footprints. Maximum load capacity spans 500 to 20,000 kg, beyond which deflection or damage may occur. T-slots, with widths from 12 to 28 mm and spacing from 50 to 200 mm, follow ISO 299 for clamping compatibility. Flatness and parallelism are specified per ISO 1101, typically 0.01 to 0.05 mm/m and 0.01 to 0.03 mm/m respectively, critical for machining accuracy. Surface hardness ranges from HRC 45 to 60 (ASTM E18) for wear resistance. Cast iron grades HT250 to HT300 (GB/T 9439) are common for stability and damping. The worktable weight varies from 200 to 5,000 kg, affecting machine inertia and foundation requirements. Operating temperature should remain within -10 to 60 °C to avoid thermal deformation. These parameters serve as reference ranges; actual values must be confirmed with the manufacturer for specific models and applications.
Working Principle
The worktable functions as a rigid platform that supports workpieces through mechanical clamping systems such as vises, fixtures, or vacuum chucks. It may incorporate precision guideways like linear rails or dovetails, allowing controlled movement along one or more axes when integrated with CNC machine slides. The table's flatness and surface integrity ensure consistent workpiece positioning, while its structural rigidity minimizes deflection during cutting operations, maintaining machining tolerances. The T-slots enable flexible clamping arrangements, and the material choice (e.g., cast iron for damping) helps absorb vibrations. Proper maintenance, including regular cleaning and inspection for wear, is essential to preserve accuracy. Failure to maintain the table's flatness or parallelism can lead to machining errors. Overloading beyond the specified capacity may cause permanent deformation. Thermal variations outside the operating range can induce distortion. Therefore, verifying the table's condition and adhering to load limits are critical for reliable operation.
Common Materials
Cast iron, Steel, Granite composite
Technical Parameters
ParameterTypical rangeNotes & selection driver
Table Size (Width x Length)400x400–2000x4000 mmDetermines maximum workpiece footprint.
Max Load Capacity500–20000 kgExceeding may cause deflection or damage.
T-slot Width12–28 mmStandard sizes for clamping compatibility.ISO 299
T-slot Spacing50–200 mmAffects fixture flexibility.ISO 299
Flatness0.01–0.05 mm/mCritical for machining accuracy.ISO 1101
Parallelism0.01–0.03 mm/mEnsures uniform clamping.ISO 1101
Surface HardnessHRC 45–60 HRCWear resistance for long service life.ASTM E18
Material GradeHT250–HT300Cast iron grades for stability and damping.GB/T 9439
Weight200–5000 kgAffects machine inertia and foundation.
Operating Temperature-10–60 °COutside range may cause thermal deformation.

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

Components / BOM
  • Table surface Part
    Provides flat reference plane for workpiece mounting and precision machining
    Material: Cast iron or steel with hardened surface
  • T-slots Part
    Standardized grooves for securing workholding fixtures, vises, and clamping systems
    Material: Steel
  • Mounting interface Part
    Mechanical connection points for attaching the worktable to machine slides or base structure
    Material: Steel
  • Coolant channels Optional Part
    Integrated passages for directing cutting fluids away from the workpiece (in some designs)
    Material: Steel or cast iron

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Worktable.

Machine table CNC table Bed table

Applied To / Applications

This component is essential for the following industrial systems and equipment:

CNC Machine Tools
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Surface Grinding Machine
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Surface Grinder
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (structural load bearing only)
other spec: Max workpiece weight: 500-5000 kg (model dependent), Vibration tolerance: <5 µm RMS, Flatness tolerance: 0.01-0.05 mm/m
temperature: 15°C to 35°C (ambient operating range)
Media Compatibility
✓ Steel alloys ✓ Aluminum alloys ✓ Composite materials
Unsuitable: High-corrosion chemical processing environments (e.g., chlorine gas exposure)
Sizing Data Required
  • Maximum workpiece dimensions (L×W×H)
  • Workpiece weight and center of gravity
  • Required mounting interface pattern (T-slots, bolt holes, etc.)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Surface fatigue cracking
Cause: Cyclic loading from repeated workpiece positioning, clamping forces, and machining vibrations leading to micro-cracks that propagate through the worktable material
Geometric accuracy degradation
Cause: Wear at locating pins, guideways, and mounting interfaces due to abrasive particles from machining operations, combined with improper clamping force distribution
Maintenance Indicators
  • Visible surface irregularities or warping exceeding 0.1mm across the worktable plane
  • Abnormal vibration or resonance during machine operation indicating loose mounting or structural compromise
Engineering Tips
  • Implement regular precision leveling checks using laser alignment tools to maintain flatness within 0.05mm tolerance, preventing uneven stress distribution
  • Establish controlled cleaning protocols using non-abrasive methods after each shift to remove metal chips and cutting fluids that accelerate wear and corrosion

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI B11.21 - Safety requirements for machine tools CE Marking - EU conformity for machinery safety

Quoted from the published standard.

Manufacturing Precision
  • Flatness: +/-0.1mm per 1000mm
  • Parallelism: +/-0.05mm between surfaces
Quality Inspection
  • Surface Plate Inspection - for flatness verification
  • Load Capacity Test - for structural integrity verification

Manufacturers of Worktable

Manufacturer profiles associated with Worktable.

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Frequently Asked Questions

What materials are commonly used for CNC worktables?

Common materials include cast iron, steel, and granite composite. Cast iron offers good damping and stability, steel provides high strength, and granite composite offers excellent thermal stability and vibration damping. The choice depends on the application requirements.

How do I determine the appropriate worktable size for my application?

The table size should accommodate the maximum workpiece footprint. Standard sizes range from 400x400 mm to 2000x4000 mm. Ensure that the workpiece fits within the table dimensions with allowance for clamping fixtures.

What is the significance of T-slot dimensions?

T-slots are used for clamping workpieces and fixtures. Width and spacing follow ISO 299 standards, with widths from 12 to 28 mm and spacing from 50 to 200 mm. Proper dimensions ensure compatibility with standard clamping components.

Why is flatness important for a worktable?

Flatness directly affects machining accuracy. If the table surface is not flat, the workpiece may be positioned incorrectly, to dimensional errors. Typical flatness tolerance is 0.01 to 0.05 mm/m per ISO 1101. Regular inspection is recommended.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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