Boxiang CNC splitting spinning machines are designed for the precision forming of V-groove pulleys, lightweight wheels and other rotationally symmetrical metal components. By combining CNC control, pre-splitting and spinning forming in a single production system, the machines help manufacturers achieve stable dimensions, consistent groove profiles and efficient batch production.

Our splitting spinning machines can process aluminum alloys and mild steel materials, making them suitable for automotive components, agricultural machinery, household appliances, industrial transmission systems and customized metal-forming applications. Different machine configurations are available according to blank diameter, material thickness, groove design and required production capacity.

What Is a Splitting Spinning Machine?

A splitting spinning machine is specialized metal-forming equipment that divides and forms the outer edge of a rotating metal blank using a pointed splitting roller and additional forming rollers.

During operation, the blank is securely clamped and rotated by the spindle. A carbide or hard-alloy splitting roller first separates and pre-forms the edge of the blank. Other spinning rollers then progressively shape the divided material into the required groove, rim or wheel profile.

Compared with manufacturing the component from several separately processed parts, split spinning can form complex circular sections from a single blank. This reduces additional joining procedures and helps maintain dimensional consistency during mass production.

Main Advantages of Our CNC Splitting Spinning Machines

Single-Clamping Forming

Pre-splitting, groove forming and profile finishing can be completed without repeatedly repositioning the workpiece. This helps reduce cumulative positioning errors and improves product interchangeability.

CNC-Controlled Forming

Programmable roller paths, spindle speed and forming movements provide consistent processing conditions for repeated production. Stored programs can also simplify the manufacturing of recurring part specifications.

Three-Station Tooling

The machines use multi-station tooling to perform different forming steps in sequence. Splitting, expansion and finishing tools can be arranged according to the workpiece design.

Automatic Loading and Unloading

Automatic material handling reduces manual operation and supports integration into continuous or semi-automatic production lines.

High-Pressure Water Cooling

The cooling and lubrication system helps control forming temperature, reduce tool wear and improve processing stability during continuous operation.

Heavy-Duty Machine Structure

The integrated machine structure provides the rigidity required for stable forming of thick metal blanks and demanding pulley or wheel profiles.

Typical Products and Applications

CNC split spinning machines can be configured to manufacture:

• Single-groove and multi-groove V-belt pulleys

• Automotive belt pulleys

• Tractor and agricultural machinery pulleys

• Washing machine pulleys

• Fan and motor pulleys

• Lightweight metal wheels

• Industrial transmission components

• Circular components with divided or expanded rim sections

• Customized aluminum or steel rotational parts

The equipment is particularly suitable for manufacturers that require repeatable groove dimensions, reduced component weight and reliable high-volume production.

Processable Materials

Depending on the component geometry and machine configuration, the splitting spinning process can be used for:

• Aluminum alloys

• Mild steel

• DC01–DC06 cold-rolled steel

• Other ductile metals suitable for rotary forming

Material selection should consider tensile strength, elongation, blank thickness, work-hardening behavior and the required splitting ratio. Boxiang can evaluate sample drawings and material information before recommending a machine and forming process.

CNC Splitting Spinning Machine Model Selection

The BXPKX50-III is suitable for relatively small-diameter components that require higher spindle speeds. The BXPKX500-III provides greater forming capacity for larger blanks and material thicknesses up to 16 mm.

Actual machine selection should not be based only on blank diameter. Buyers should also consider material grade, groove quantity, groove depth, final diameter, annual output and required automation level.

How to Select the Right Splitting Spinning Machine

Before requesting a machine quotation, prepare the following information:

1. Workpiece drawing with dimensions and tolerances

2. Blank diameter and initial thickness

3. Material grade and mechanical properties

4. Number, width and depth of grooves

5. Final product diameter and profile

6. Required cycle time and annual output

7. Manual or automatic loading requirements

8. Upstream and downstream production equipment

Based on this information, Boxiang can recommend the machine structure, spindle capacity, forming rollers, tooling stations and automation configuration.

Customized Splitting Spinning Solutions

Different pulley and wheel products require different roller paths, clamping fixtures and forming forces. Boxiang provides customized CNC splitting spinning machine solutions based on customers’ drawings, samples and production requirements.

Customization can include:

• Workpiece-specific mandrels and clamping fixtures

• Customized splitting and forming rollers

• CNC forming program development

• Automatic feeding and unloading systems

• Safety guarding and detection devices

• Production-line integration

• Sample forming and process verification

• Operator and maintenance training

The project process covers requirement communication, solution design, technical confirmation, machine manufacturing, testing, delivery and after-sales support.

Why Choose Boxiang?

Boxiang specializes in CNC metal spinning machines and rotary forming process development. In addition to supplying equipment, our engineering team supports customers with tooling design, process planning, forming trials and production-line configuration.

For pulley, lightweight wheel and circular metal component manufacturers, we focus on providing stable equipment, repeatable forming processes and machine configurations matched to actual production requirements.