The global demand for high-precision, high-efficiency engine components is rising. To help manufacturers meet this demand, Anyang Xinheng Machine Tool Co., Ltd. delivers world-class, automated manufacturing lines for motorcycle, automotive, and truck pistons.
As a premier specialized machine tool manufacturer, we have developed a highly optimized 6-machine production line that seamlessly transforms raw piston castings into high-precision finished products. Below is a detailed breakdown of our advanced 6-step manufacturing process (OP10 to OP60) designed for motorcycle pistons.
The 6-Step Piston Manufacturing Process
[OP10: Riser Cutting] ➔ [OP20: Rough Turning & Centering] ➔ [OP30: Double-Spindle Boring] ➔[OP40: CNC Non-Circular Turning] ➔[OP50: Oil Hole Drilling] ➔[OP60: Finish Top Turning]
OP10: Gating & Riser Cutting Machine (Riser Removal)
The production begins by removing the gating system from the raw casting.
The Equipment: Dual-Station Piston Riser Cutting Machine.
How it Works: It directly cuts the risers from dual-cavity cast pistons.
Key Features: Fully enclosed protective housing for maximum operator safety, rapid cutting speeds, and high-throughput efficiency.
OP20: CNC Lathe (Rough Turning & Centering)
This stage prepares the piston’s external geometry and reference points.
The Process: Performs rough turning of the outer diameter (OD), finish turning of the locating spigot (register), rough turning of the ring grooves, and drilling of the center hole.
Key Features: Equipped with a 3-jaw hydraulic self-centering chuck for ultra-fast clamping. It utilizes a gang-tool structure to eliminate tool-change lag, ensuring rapid cycle times.
CNC System Options: Standard equipped with the highly cost-effective GSK980Tdi system. Premium options like FANUC or SIEMENS are also available based on customer preference.
OP30: Double-Spindle Boring Machine (Pin Hole Processing)
Precision pin hole machining is critical for piston durability and wrist pin fitment.
The Process: Rough boring of the pin hole, machining the circlip grooves, and finish boring of the pin hole.
How it Works: Uses a high-precision outfacing head (expanding tool head). The piston is securely held in place via a pneumatic clamping system. The expanding tool executes multi-step machining in a single setup to guarantee absolute concentricity.
OP40: CNC Non-Circular Piston Lathe (Ovality & Profile Turning)
The piston's skirt must be machined into a complex, non-circular (oval and barrel-shaped) profile to compensate for thermal expansion during engine operation.
The Equipment: Anyang Xinheng’s proprietary, new-generation CNC Piston Copying Lathe.
The Technology: Features a state-of-the-art flatbed linear servo tool post and dedicated high-speed driver. Supported by our custom piston surface data processing software, it can program and machine complex geometries:
Standard ovals
Standard ovals superimposed with eccentric circles
Asymmetric non-ovals
Eccentric ovals and complex 3D profiles
Clamping Flexibility: Uses the locating spigot as the positioning datum. Customers can choose between pneumatic tailstock pressing or a spring-tightened/pneumatically-released clamping mechanism.
OP50: Oil Hole Drilling Machine (Lubrication Holes)
Proper lubrication is vital for piston longevity, requiring highly precise oil-return holes.
The Process: Drills the oil return holes within the piston ring grooves.
Key Features: Features a dual power-head configuration for double the processing efficiency. It supports tilted-angle drilling. The integrated indexing rotary table features a precise scale ruler, allowing operators to control the drilling angle with extreme accuracy. The high-spindle speed ensures an excellent, burr-free surface finish.
OP60: CNC Lathe (Finish Turning of Piston Crown)
The final machining step shapes the combustion dome/piston crown.
The Process: Finish turning of the piston top surface.
Key Features: Employs a robust hydraulic tensioning/clamping device to secure the piston. A gang-tool configuration is utilized for rapid, high-speed face turning to achieve the exact compression height and surface finish.
Why Choose Anyang Xinheng Machine Tool Co., Ltd.?
Full Turnkey Solutions & Automation for piston
To maximize productivity and reduce labor costs, the entire 6-machine line can be integrated with gantry robotic loaders (truss automation) for a fully automated, hands-off manufacturing workflow.
Global Footprint: We are a trusted global supplier, having successfully exported and installed piston machining lines in India, Egypt, Turkey, Iran, and many other countries.
Tailored Engineering: From raw casting to the final quality-checked piston, we customize the machinery, fixtures, and software to match your exact engine blueprints.
Contact Our Experts Today
Are you looking to upgrade your piston manufacturing facility or set up a new production line? Contact Anyang Xinheng's engineering team for technical layouts, cycle time estimations, and quotes.
Official Website: www.ayxhmt.com
Email (Inquiries): info@ayxhmt.com
WhatsApp / Mobile: +86 13526135763
