Workpiece Positioning Fixture for Robotic Welding

Product Specifications

Technical details and manufacturing context for Workpiece Positioning Fixture

Definition

A workpiece positioning fixture is a specialized component used within a robotic welding station to accurately locate, clamp, and support metal workpieces in the correct orientation and position for consistent, high-quality automated welding. It ensures repeatable positioning to maintain welding precision and efficiency. The fixture is designed to interface with the robotic welding cell, presenting the workpiece at the programmed welding coordinates so that the robot can execute its weld path accurately on each cycle. Constructed from carbon steel or tool steel, the fixture is built to withstand the forces and conditions of a welding environment. Key parameters include a clamping force of 5–50 kN, which must exceed welding distortion forces; positioning accuracy of ±0.05 mm and repeatability of ±0.02 mm, both critical for weld seam consistency and batch uniformity, verified against ISO 230-2. The operating temperature range is -20 to 80°C, and welding heat may require cooling. The maximum workpiece weight is 500 kg, with heavier parts requiring custom design. The fixture's own weight ranges from 150 to 350 kg, affecting handling and installation. Its footprint is 1200×800×600 mm, and it offers an adjustment range of ±50 mm to accommodate part variations. Clamping speed is 1–3 seconds, affecting cycle time. The degree of protection is IP54 per IEC 60529, providing dust and splash protection. Material is typically Q235 carbon steel per GB/T 700, with zinc plating per ASTM B633 for corrosion resistance. These values are directory reference ranges and must be confirmed for the actual model and application with the legal manufacturer or supplier.

Working Principle

The fixture uses mechanical clamps, locators (pins, stops), and supports to immobilize the workpiece against a reference datum. It interfaces with the robotic welding cell, ensuring the workpiece is presented at the programmed welding coordinates, allowing the robot to execute its weld path accurately on each cycle. The clamping force, adjustable within 5–50 kN, must exceed welding distortion forces to maintain stability. Positioning accuracy and repeatability are ensured through precision locators and clamping mechanisms, verified to ISO 230-2. The fixture's adjustment range of ±50 mm accommodates part variations, while its clamping speed of 1–3 seconds influences cycle time. The operating temperature range of -20 to 80°C requires consideration of cooling for welding heat. The fixture's weight and footprint must be checked against the robot's reach envelope and floor space.

Common Materials

Carbon Steel, Tool Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Clamping Force	5–50 kN	Must exceed welding distortion forces
Positioning Accuracy	±0.05 mm	Critical for weld seam consistencyISO 230-2
Repeatability	±0.02 mm	Ensures batch uniformityISO 230-2
Operating Temperature	-20–80 °C	Welding heat may require cooling
Max Workpiece Weight	500 kg	Heavier parts need custom design
Material	Q235	Carbon steel standardGB/T 700
Surface Treatment	Zinc plating	Corrosion resistanceASTM B633
Weight	150–350 kg	Affects handling and installation
Footprint (L×W×H)	1200×800×600 mm	Check robot reach envelope
Adjustment Range	±50 mm	Accommodates part variations
Clamping Speed	1–3 s	Affects cycle time
Degree of Protection	IP54	Dust and splash protectionIEC 60529

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

Baseplate Part
Provides the rigid foundation and mounting surface for all other fixture components.

Material: steel
Locator Pin Part
Precisely positions the workpiece by engaging with pre-drilled holes or edges.

Material: hardened steel
Clamp Arm Part
Applies force to hold the workpiece firmly against the locators.

Material: steel
Support Block Part
Prevents workpiece deflection or vibration during welding.

Material: steel

Applied To / Applications

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

Robotic Welding Station

View system integration details

Manufacturers of Workpiece Positioning Fixture

Manufacturer profiles associated with Workpiece Positioning Fixture.

Sourcing Workpiece Positioning Fixture from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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.

Frequently Asked Questions

What is the purpose of a workpiece positioning fixture in robotic welding?

It securely holds and precisely positions metal workpieces in the correct orientation for automated welding, ensuring consistent weld quality and repeatability across production cycles.

What are the key specifications to consider when selecting this fixture?

Key specifications include clamping force (5-50 kN), positioning accuracy (±0.05 mm), repeatability (±0.02 mm), operating temperature (-20 to 80°C), maximum workpiece weight (500 kg), and footprint (1200×800×600 mm). These must be verified for the specific application.

How does the fixture ensure positioning accuracy?

It uses precision locators, clamps, and supports to immobilize the workpiece against a reference datum, with accuracy and repeatability verified to ISO 230-2. The adjustment range of ±50 mm accommodates part variations.

What maintenance signals indicate the fixture needs attention?

Signs include reduced clamping force, increased positioning deviation, wear on locators or clamps, and corrosion. Regular inspection of surface treatment and moving parts is recommended. Always consult the manufacturer for maintenance guidelines.

Data Basis

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

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Workpiece Positioning Fixture

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Max clamping force: 5000 N
other spec:	Positioning accuracy: ±0.05 mm, Repeatability: ±0.02 mm
temperature:	-20°C to 150°C

Workpiece Positioning Fixture

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards