Description

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Precision-ground modular sub-plates and T-slot worktables engineered for vertical (VMC) and horizontal (HMC) machining centers. Designed to reduce setup downtime via standardized grid patterns (M12/M16 threaded + H7 dowel holes) or custom OEM envelopes.

Primary Standard Interfaces: Compatible with table sizes from 500 x 400 mm to 1500 x 800 mm.

Core Function: Repeatable zero-point and mechanical modular positioning; elimination of re-alignment per batch cycle.

Technical Specifications

Parameter	Specification (Cast Iron Series)	Specification (Aluminum Series)
Material Grade	ASTM A48 Class 35B / ISO HT250	EN AW-7075-T6 (AlZn5MgCu)
Tensile Strength	>= 250 MPa	>= 530 MPa
Surface Hardness	HB 180 – 240 (Stress-relieved)	T6 Heat-treated
Flatness Tolerance	<= 0.012 mm / 300 mm	<= 0.010 mm / 300 mm
Parallelism (Base-to-Top)	<= 0.015 mm / 300 mm	<= 0.012 mm / 300 mm
Grid Pitch Accuracy	±0.015 mm (cumulative)	±0.010 mm (cumulative)
Thread Tolerance	ISO 6H (Helical insert option available)	ISO 6H / Steel thread inserts
Surface Finish	Precision surface grind (Ra <= 0.8 µm)	Hard anodized (50 µm) optional

Key Features

Dual Thermal-Stress Relief: Natural aging (> 180 days) combined with thermal annealing cycle (550°C soak) prevents post-machining bow.

Hardened Locating Interface: H7 precision reamed holes paired with hardened 40Cr bush liners for high shear-load resistance.

Chip-Evacuation Channels: Integrated 15° sloped coolant/chip drainage grooves on select sub-plate profiles.

Direct OEM Retrofit: Bolt-hole pitch matched to major machine brands (Haas, Mazak, DMG Mori, Okuma) without table modification.

Applications

Automotive Powertrain: Aluminum transmission housing face-milling fixtures.

Aerospace Structural Brackets: 5-axis titanium/aluminum multi-part nesting sub-plates.

Hydraulic Valve Blocks: High-density batch drilling and tapping set-ups.

Contract Machining (Job Shops): Quick-change pallet/sub-plate rotation to minimize spindle idle time.

Customization

Dimensional Envelope: Custom length/width up to 2000 mm single-piece or modular multi-plate splice.

Grid Pattern: Metric (M8–M20, 50mm/100mm grid) or Imperial (1/2"-13 UNC, 2" grid).

Zero-Point Integration: Direct counter-boring for 5-axis modular risers or Erowa/Schunk zero-point pull-studs.

Engineering Deliverables: 2D PDF / STEP 3D model provided within 48 hours of RFQ envelope spec.

Quality Control

Gate 1 (Material): Ultrasonic flaw detection (ASTM E114) for cast iron porosity check.

Gate 2 (Post-Annealing): Hardness testing at 5 fixed reference quadrants per plate.

Gate 3 (Final Metrology): CMM verification report (Zeiss PRismo) shipped with every lot; flatness laser-tracker audit available on request.

Manufacturing & Certifications

Facility Footprint: 12,000 m² heavy-machining shop; 4 gantry milling centers (travel up to 4000 mm).

Quality Management: ISO 9001:2015 certified process control.

Traceability: Heat-number laser-etched on side edge linked to material mill test report (MTR 3.1).

Packaging, Logistics & Compliance

Corrosion Protection: VCI (Volatile Corrosion Inhibitor) film wrap + desiccant packs sealed in heavy polyethylene.

Dunnage & Transit: ISPM 15 heat-treated fumigated wooden pallet with bolted wooden cradle frame (zero edge-impact exposure).

Incoterms & Port: FOB Shanghai / Ningbo (CIF/DDP pre-quote available upon destination ZIP code).

Lead Time:
• Standard catalog stock items: 3–5 business days.
• Custom grid/OEM machining: 18–25 calendar days FOB.

FAQ

Q: Will thermal growth distort the plate during continuous heavy roughing?

A: HT250 cast iron exhibits lower thermal creep under heavy cuts than 7075 aluminum. For heavy roughing cycles exceeding 4 hours continuous thermal load, cast iron sub-plates are recommended.

Q: Are steel helical inserts (Helicoil/Keen-serts) standard in aluminum plates?

A: Standard aluminum plates feature direct CNC threads; steel locking inserts are specified upon request for high-frequency clamp cycling (> 5000 cycles).

Q: What is the claim policy for flatness deviation out of tolerance?

A: Free replacement or local rectification credit issued upon receipt of third-party CMM inspection report matching serialized ID.

Q: Is third-party on-site inspection (SGS/TÜV) supported prior to crating?

A: Yes. On-site dimensional witness audit by SGS, TÜV, or client-designated inspector is welcomed with 3 business days' notice.

Request a Quote (RFQ) & Technical Pre-Check Loop

Submit envelope parameters and CAD geometry:
Interactive File Drop Zone UI: Drag & Drop ZONE: Accept .STEP/.IGES/.PDF up to 50MB (Bounding-box parser active with AE fallback)
1. Machine Model / Table Envelope: [E.g., Haas VF-4, 1016 x 508 mm]
2. Material Preference: [HT250 Cast Iron / Al 7075-T6]
3. Thread / Grid Spec: [M16 @ 100mm grid / Custom layout attached in CAD]
4. Target Annual / Batch Quantity: [PCS]
5. Target Incoterm & Destination: [FOB Shanghai / CIF / DDP ZIP Code: _____]

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