I. Core Advantages: Lithium Battery Power + Precise Contouring, Reconstructing Complex Grinding Efficiency

1. Cordless Portable Design, Freeing You from Scenarios and Power Supply Constraints
Equipped with a single/dual 8.0Ah-12.0Ah high-capacity lithium iron phosphate battery, supporting hot-swappable alternating use, completely eliminating the cable drag of traditional corded contour grinders and the air source dependence of pneumatic models. Suitable for mobile operations in mold workshops, outdoor repair of irregularly shaped components, high-altitude curved surface grinding, and other power-free scenarios; the body is made of high-strength, lightweight aerospace aluminum alloy and engineering plastic composite material, with a total weight of only 2.0-4.5kg, more than 85% lighter than traditional benchtop contour grinders (15-30kg). It can be operated with one hand, and with the foldable contour stand design, the volume is reduced by 40% when stored, facilitating tool cart transportation and flexible on-site deployment. 2. Precise contour following for complex profile grinding: The power core uses an 800W-1500W high-power brushless motor with a speed of 10000-22000r/min, supporting 3-5 levels of stepless speed adjustment. Its key highlight is the built-in mechanical contouring wheel + electronic trajectory following system, which can precisely conform to the contours of curved, irregularly shaped, and irregularly shaped workpieces (adapting to complex curved surfaces with a curvature radius ≥5mm), controlling the grinding error within ±0.1mm, avoiding problems such as contour deformation and uneven thickness caused by manual grinding. Combined with a dedicated flexible grinding head, it can achieve "contour replication grinding," enabling high-precision processing of mold cavities, irregularly shaped workpieces, and curved components without requiring professional skills, improving efficiency by more than 10 times compared to manual contour grinding. 3. Balancing battery life and compatibility to meet high-intensity professional work requirements. A single battery can provide 2-5 hours of continuous operation on a full charge (adjustable depending on the power level and the material being polished), while dual batteries can provide 6-12 hours of continuous operation, meeting the high-intensity professional needs of mold processing, automotive parts production, and other industries. Equipped with 60-minute fast charging technology, it quickly restores full charge after a power outage, avoiding work interruptions. It is compatible with mold steel, aluminum alloy, carbon fiber, wood, resin, composite materials, etc., and can complete the entire process of "rough grinding and shaping - fine grinding - mirror polishing," adapting to different complex curved surface polishing needs without changing equipment. II. Technical Highlights: Professional Configuration Solidifies Precision Grinding Advantages

1. Contouring and Grinding System Design Adapts to Complex Curved Surface Characteristics

Contouring Structure: Equipped with adjustable contouring wheels (15-30mm in diameter) and a trajectory locking mechanism, the contouring wheels and grinding head maintain a fixed distance (adjustable range 0.1-5mm). Through mechanical following and electronic assisted positioning, it ensures that the machine always conforms to the workpiece contour during grinding, without deviation or missed grinding. It supports quick replacement of contouring wheels, adapting to different types of contours such as concave, convex, and zigzag lines. Some high-end models are equipped with laser contour scanning assistance function to further improve the following accuracy of complex curved surfaces. Grinding Head Technology: Utilizing a flexible, adaptive grinding head (polyurethane substrate + diamond/alumina abrasive), it conforms to the curved surface deformation of the workpiece, avoiding localized over-grinding caused by hard contact; the grinding head diameter covers 50-120mm, supporting different coarseness specifications from 80-400 grit. The coarse grinding setting allows for rapid shaping, while the fine grinding setting achieves high-precision surface treatment with Ra≤0.8μm; equipped with a quick-release grinding head interface, replacement can be completed in 15 seconds without additional tools.
2. Lithium Battery and Safety Protection for Professional Working Conditions
Battery Performance: The lithium iron phosphate battery has a cycle life of ≥1800 cycles, supports stable operation in environments from -20℃ to 50℃, and exhibits excellent vibration and impact resistance (withstanding workshop tool cart bumps and minor collisions on-site); the waterproof rating reaches IPX5, preventing cutting fluid and dust from seeping into and damaging the battery during operation, making it suitable for dusty and humid environments such as mold processing and machinery manufacturing. Multiple Protections: Equipped with overload protection (automatic shutdown when load exceeds rated value by 120%), over-temperature protection (alarm when motor temperature ≥75℃), accidental touch protection (safety lock + double trigger start), and deviation protection (automatic speed reduction when contour deviates). The grinding area is equipped with a transparent splash guard to prevent dust, grinding debris, and cutting fluid from splashing, protecting the operator's eyes and hands. 3. Humanized and Intelligent Design for Enhanced Ease of Operation: Ergonomics: Features a rotatable, non-slip grip (rotation angle 0°-180°) to adapt to different working angles such as inner curved surfaces, outer curved surfaces, and vertical surfaces. The grip is wrapped with a soft rubber shock-absorbing layer and has a built-in vibration buffer structure, reducing hand vibration transmission by 50% and preventing muscle fatigue caused by prolonged operation. The machine's center of gravity is close to the midpoint between the grip and the contour wheel, ensuring a smooth, tilt-free operation with one hand and more stable surface following. Intelligent Monitoring: The LCD high-definition display shows real-time parameters such as remaining battery power (percentage), current speed setting, grinding thickness compensation value, and cumulative working time; some high-end models support Bluetooth connection to a mobile APP, allowing users to preset grinding parameters (speed, contouring distance) for different workpieces, store 10-20 commonly used programs for easy batch production, and record grinding data for quality traceability. III. Typical Application Scenarios: Focusing on Complex Contour Grinding Needs

1. Mold Manufacturing and Repair
Applicable to cavity surface grinding, parting surface polishing, and mold scratch repair for injection molds, stamping molds, and die-casting molds. Contour accuracy ensures consistent mold cavity contour replication, avoiding problems such as difficult product demolding and surface defects caused by manual grinding, significantly shortening the mold trial and repair cycle. 2. Automotive Parts Machining: Used for surface grinding and polishing of curved automotive body components, irregularly shaped engine parts, and interior curved trim panels. The cordless design allows for flexible movement to any part of the workpiece. The contour-following function precisely matches the streamlined contours of the car body. Low vibration characteristics prevent damage to the component substrate, and the surface roughness meets the standards after grinding, eliminating the need for rework.
3. Aerospace and Composite Materials Machining: Adapted for high-precision grinding of aerospace components (such as blades, casings, curved supports) and carbon fiber composite components. The contour-following system can handle complex aerodynamic contours, and the low-dust motor design prevents composite fiber scattering, meeting aerospace-grade surface quality requirements (Ra≤0.4μm).
4. Furniture and Crafts Machining: Used for grinding and polishing curved armrests of solid wood furniture, wood carvings, and irregularly shaped decorative components. The flexible grinding head protects the wood grain from damage, and the contour-following function accurately reproduces the design contours, increasing efficiency by more than 8 times compared to manual grinding, while ensuring contour consistency in batches of products. 5. Mechanical Manufacturing and Repair of Irregular Components: This service addresses surface treatment of irregularly shaped shafts, cams, curved gears, and other parts in mechanical equipment, as well as the wear and tear repair of irregularly shaped components in older equipment. Its cordless portability makes it suitable for mobile workshop operations and on-site repairs, while its high conformal accuracy ensures the fit of repaired parts and avoids abnormal assembly gaps. IV. Purchasing Guide: Selecting Precision Contouring Grinding Equipment Based on Your Needs

1. Priority of Core Parameters (Sorted by Importance)
Contouring Accuracy: Prioritize models with grinding error ≤ ±0.1mm and support for curved surfaces with a radius of curvature ≥ 5mm. For high-precision scenarios such as mold processing, select high-end models with ≤ ±0.05mm accuracy.
Motor Power: Select 800-1200W for general complex curved surface grinding; select 1200-1500W for heavy-duty mold rough grinding and high-strength composite material grinding.
Battery Configuration: Prioritize dual batteries with a capacity of 8.0Ah or higher, supporting fast charging and low-temperature adaptability (operable at -20℃). For mass production scenarios, a dual-battery kit is recommended.
Grinding Head Compatibility: Select models that support flexible grinding heads, multiple grit sizes (80-400 grit), and quick-release interfaces to ensure compatibility with different curved surfaces and precision requirements.
Track Following Function: Prioritize models with mechanical contouring wheels + For models with electronically assisted positioning, it is recommended to choose the upgraded model with laser contour scanning for complex curved surface scenarios; Protection rating: at least IP54 protection, and for humid or high-coolant environments, it is recommended to choose the upgraded model with IP65 protection. 2. Brand and Scenarios Compatibility Recommendations
Industrial Grade Preferred (Mold Making, Aerospace):
Bosch (GGS 18V-EC Contour): Industrial-grade contouring accuracy, supports laser contouring assistance, IP65 protection rating, suitable for high-precision mold processing;
Makita (DCP500Z): High-efficiency brushless motor, precise contouring wheel adjustment, stable battery life, suitable for batch processing of parts;
Professional Grade Cost-Effective Choice (Automotive Repair, Furniture Processing):
Dayou (5801): Practical contouring function, highly versatile battery, affordable accessories, supports complex surface grinding in multiple scenarios;
Dongcheng (DCSF320): Simple and easy to operate, contouring accuracy meets general professional needs, extensive after-sales service network, convenient maintenance;
Key Points for Niche Brand Selection: Must provide a contouring accuracy test report, battery warranty ≥2 years, motor warranty ≥1 year, prioritize brands that can provide customized grinding heads and on-site accuracy calibration services to ensure compatibility with professional scenarios. V. Usage and Maintenance Techniques: Extending Equipment Lifespan and Ensuring Grinding Accuracy

1. Correct Usage Guidelines

Preparation Before Operation:

Clean the workpiece surface of oil and impurities, and check the contour for burrs and sharp edges (pre-treatment is necessary) to avoid damaging the contour wheel;

Select the corresponding size contour wheel according to the workpiece contour type (small diameter contour wheel for inner curved surfaces, large diameter contour wheel for outer curved surfaces), and calibrate the distance between the contour wheel and the grinding head (error ≤ 0.05mm);

Check the battery power (≥ 50%), motor operating status (no abnormal noise), and the tightness of the grinding head installation. Select the speed setting according to the material and accuracy requirements (rough grinding 15000-22000r/min, fine grinding 10000-15000r/min). Operating Procedure: Press the safety lock + double trigger to start the equipment. First, test the contour following effect and grinding thickness on the scrap edge of the workpiece or a test grinding block. Only proceed with formal operation after confirming that everything is correct. Keep the contour wheel tightly against the workpiece contour and move the equipment at a constant speed, avoiding contour deviation caused by sudden stops and turns. When grinding inner curved surfaces, control the moving speed to ≤5cm/s, and for outer curved surfaces, ≤8cm/s. After every 40 minutes of continuous operation, stop the machine for 5 minutes to allow it to cool down. Clean the dust and grinding debris from the contour wheel and grinding head surface to prevent accumulation that could affect the following accuracy. When changing between two batteries, turn off the power and wait until the grinding head has completely stopped before operating. Safety Precautions: Wear safety goggles (to protect against dust and flying shavings), a dust mask (to prevent inhalation of metal dust/fibers), and cut-resistant gloves (to prevent scratches from the grinding head). Long hair must be tied up to prevent it from getting caught in the equipment. Grinding flammable, explosive, or toxic/hazardous materials is strictly prohibited. When grinding metal workpieces, avoid contact between cutting fluid and motor/battery interfaces. Keep away from children and unauthorized personnel while working. Avoid grinding directly on yourself or others. When working at heights, wear a safety belt and attach a safety rope to the equipment to prevent falls. 2. Daily Maintenance Points
Profiling and Grinding System Maintenance:
After operation, promptly clean the dust and shavings from the surface of the profiling wheel, wipe it clean with a soft cloth, and check the profiling wheel for wear or deformation (wear exceeding 0.5mm requires immediate replacement);
After use, clean the grinding head of any residual abrasive and debris. When abrasive falls off the grinding head, grinding efficiency significantly decreases, or surface roughness fails to meet standards, replace the grinding head with one of the appropriate grit;
Check the lubrication of the profiling wheel shaft and grinding head drive shaft weekly, replenish with special high-temperature grease, tighten any loose screws, and ensure smooth transmission without jamming. Battery Maintenance: After operation, remove the battery and store it in a dry, ventilated environment (temperature 0-30℃), avoiding storage with metal objects (to prevent short circuits); If not used for an extended period (more than 1 month), fully charge the battery before storage, and recharge it every 2 months (maintaining a charge level of 50%-80%); Do not charge in high-temperature (≥50℃) or low-temperature (≤-10℃) environments. Before charging, ensure the battery interface is dry and clean to avoid short circuits caused by dust or cutting fluid. Machine Body and Control System: After operation, use compressed air to blow away heat dissipation vents, splash guards, and the display screen to remove dust accumulation; wipe the operation buttons with a dry cloth to prevent cutting fluid residue from corroding electronic components; Check the wear of the motor carbon brushes monthly (replace when wear exceeds 1/2), test the contouring accuracy and safety protection functions to ensure automatic speed reduction when the contour deviates and automatic shutdown when overloaded; Regular Calibration: Calibrate the contouring accuracy and grinding head spacing every 2 months (contact brand after-sales service or a third-party organization), and verify grinding errors using a standard contour test block; Conduct a comprehensive inspection annually (motor power, battery capacity, trajectory following accuracy) to ensure the equipment meets professional operating standards.