Shenyang Machine Tool: Domestic Core Equipment for Precision Machining of Automotive Components

Dedicated service line: 021-61195255

Shenyang Machine Tool: Domestic Core Equipment for Precision Machining of Automotive Components

Shenyang Machine Tool leverages high-precision, high-efficiency, and customized equipment and process solutions, Covers the machining of core components for both conventional internal combustion vehicles and new energy vehicles. From engine crankshafts and transmission gears to chassis subframes and battery trays, we provide end-to-end solutions spanning from individual equipment to complete production lines, helping automotive manufacturers improve quality, reduce costs, and boost efficiency.

I. Core Requirements for Automotive Parts Processing and Shenyang Machine Tool Solutions

Core requirements for automotive parts machining: micrometer-level precision, high cycle efficiency, and complex curved surfaces. / Stable machining of thin-walled components and automated, flexible production. Shenyang Machine Tool has launched dedicated machine models and process packages tailored to the characteristics of different parts, enabling domestic substitution for critical processes.

1. Machining of core engine components (crankshaft, connecting rod, cylinder block) / Cylinder head)

（ 1 ) Crankshaft machining (the core of automotive power)

Core model: SUC8122 CNC lathe for connecting rod journals, SUC500DHT5 Double-head horizontal CNC lathe, SUC500DEM4 High-speed external milling machine for crankshafts

Process Advantages:

• Dual-spindle eccentric drive enables complete machining of the connecting-rod journal, fillets, and counterbore grooves in a single setup, with accuracy reaching 0.005mm
• Double-Head Synchronous Turning / External milling delivers higher efficiency compared with conventional equipment. 50%–100% , suitable for mass production
• Equipped with an automated loading and unloading system to enable unmanned machining, saving per shift 6 Famous person

Typical application: four cylinders / Full-sequence machining of a six-cylinder engine crankshaft, with a cycle time of 24 item / hour

（ 2 ) Cylinder block / Cylinder head / Transmission housing machining

Core model: HMC50Q Horizontal machining center, VMC850Q-A Vertical machining centers, five-axis linkage machining centers

Process Advantages:

• High-rigidity bed + Direct-drive spindle, with speeds up to 12,000–24,000 rpm , Complex cavity milling with no tool-change marks
• Complete milling, boring, drilling, and tapping operations in a single setup, with positioning accuracy. ≤0.01 mm
• Compatible with multiple materials, including aluminum alloy and cast iron, to meet China VI emission standards. / Machining Requirements for New-Energy Hybrid Engine Housings

2. Machining of core components for new energy vehicles (motors, chassis, and batteries)

（ 1 ) Motor shaft / Motor housing machining (new energy) “ heart ” )

Core model: T5.2-500Q CNC lathe, IVT45 Inverted Lathe, Turning-Milling Center

Process Challenges and Solutions:

• Motor shaft: high-precision rotating surface + Dynamic balancing control, T5.2-500Q Achieve roundness ≤0.003 mm , Surface Roughness Ra ≤ 0.4 μm
• Motor housing: Thin-walled aluminum alloy is prone to deformation; use a dedicated fixture. + Segmented Cutting + Dynamic compensation to control deformation. ≤0.02 mm
• Single-setup machining of external diameter, internal bore, end face, and keyway, reducing the number of machining operations. 3–5 Way

（ 2 ) Chassis components (subframe, rear axle housing, torsion beam)

Core models: five-axis vertical machining center, dual-face milling machine for torsion beams, and dedicated turning center for rear-axle housing flanges.

Process Advantages:

• Subframe: Five-axis linkage + Linear motors deliver machining efficiency for complex curved surfaces comparable to that of international equipment, while reducing costs. 30%
• Rear axle housing flange: A dedicated machine tool completes end-face turning, tapping, drilling, and boring in a single clamping, with a cycle time of 24.41 item / hours, meeting an annual output of 10 Ten thousand requests
• Torsion Beam: Double-Sided Milling Synchronous Processing for Enhanced Efficiency 40% , dimensional consistency ≤0.03 mm

（ 3 ) Battery tray / Box-body machining (key to new-energy vehicle chassis)

Core model: IV-85 Multi-spindle specialized machine tools, high-speed gantry milling centers

Process Breakthrough:

• Large-size aluminum profiles / Die-casting part machining, employing 3–4 Spindle synchronous machining achieves an efficiency that is [X] times that of conventional equipment. 4–5 times
• Positioning accuracy ≤0.05 mm , mold change time ≤8 Minutes, quick switching to multiple vehicle models
• Beat compression to 4 minute / item, surface finish Ra ≤ 0.6 μm , securing bulk orders from BYD, NIO, and other companies

3. General precision component machining (wheel hubs, bearings, ball cages, flanges)

Core model: HTC CNC lathes, ball-cage inverted lathes, and friction-welding special machines

Typical applications:

• Wheel hub bearings: An automated production line integrates turning, grinding, and assembly, achieving a precision of P4 Level, efficiency improvement 60%
• Ball cage / Constant-velocity joint: On an inverted lathe, the inner and outer spherical surfaces and raceways can be machined in a single clamping. 0.002mm Grade-level precision ensures smooth transmission.
• Flange: IVT45 High-efficiency turning on an inverted lathe, end-face runout ≤0.01 mm , chassis adaptation / Transmission system connecting components

II. Core Technological Advantages (Supporting High-Quality Machining of Automotive Components)

• Micron-level precision control: positioning accuracy ≤0.01 mm , repeated positioning ≤0.005 mm , through “S Test specimen ” Internationally standardized testing that meets the stringent tolerance requirements for automotive components.
• High-efficiency composite machining: turning-milling integration, five-axis simultaneous machining, and multi-spindle synchronization reduce setup time and the number of machining operations, thereby boosting productivity. 30%–100% , reducing manufacturing costs.
• Intelligent Process Compensation: Thermal Deformation and Dynamic Cutting Force Compensation + Online measurement with real-time error correction ensures batch production consistency and reduces the scrap rate. 50%。
• Flexible automation adaptation: Supports robotic loading and unloading, dual pallet changers, and production-line networking, enabling mixed-model, small-batch, and large-batch production on the same line and ensuring rapid response to market demand.
• Lightweight Material Adaptation: For lightweight materials such as aluminum alloys and magnesium alloys, optimize cutting parameters and tooling solutions to address issues like thin-wall deformation and chatter marks, achieving surface quality that reaches Ra ≤ 0.4 μm 。

III. Typical Automotive Component Machining Line Configuration (Turnkey Complete Line Solution)

1. Traditional Internal Combustion Vehicle Engine Crankshaft Machining Line

1. Milling the end face and drilling the center hole: SUC8216

2. Spindle journal machining: SUC500DHT5 Double-headed car

3. Connecting rod journal machining: SUC8122 CNC lathe

4. Oil hole machining: SUC8149

5. Final Inspection / Dynamic balancing: with accompanying testing equipment

Total line value: annual output 15 Ten thousand cases, with reduced manpower 70% , unit cost decreases 22%

2. New Energy Vehicle Motor Shaft + Housing machining line

1. Motor shaft: T5.2-500Q CNC lathe + Automatic loading and unloading

2. Motor housing: VMC850Q-A Add instantly + Five-axis linkage

3. Cleaning / Inspection: Automated Production Line

Whole-line value: Compatible 800V High-voltage motor, with accuracy reaching 0.003mm , beat 3 minute / items, meeting the rapidly growing demand for new-energy vehicles

3. Chassis subframe + Battery Tray Processing Line

1. Subframe: Five-axis vertical machining center + Robotic Flexible Cell

2. Battery tray: IV-85 Multi-spindle special machine

End-to-end value: Covers core chassis components, boosting efficiency. 4–5 times, changeover time ≤10 Minutes, enabling co-line production for multiple platform vehicle models

IV. Selection Recommendations (by Component Type and Production Scale)

V. Summary

Shenyang Machine Tool focuses on customized R&D. + Centered on scenario-based validation, we develop a comprehensive portfolio of equipment and process solutions—covering both conventional internal-combustion vehicles and new-energy vehicles—that address the precision, efficiency, and flexibility requirements of automotive component manufacturing. Our offerings enable domestic substitution across the entire value chain, from standalone machines to complete production lines, thereby helping automotive manufacturers enhance their core competitiveness and supporting the high-quality development of China’s automotive industry.