Bullet Assembly

Advanced Bullet Assembly System

Servo-Driven Bullet Assembly The OTM-5176A leverages servo-driven technology to execute a multi-stage assembly process, feeding preformed cores and drawn jackets for seamless insertion, swaging to bond the components, and final shaping including ogive profiling for aerodynamic noses and cannelure grooving for secure case crimping.

The 75-ton servo press ram, adjustable from a 2-inch to 8-inch stroke, allows dynamic control over force, stroke length, and assembly speed via the Weintek HMI, enabling parameter adjustments for dwell times, multi-program memory, and integration with annealing or tipping stations. This precision ensures high-accuracy output for calibers like .50 BMG, minimizing defects such as misalignment or incomplete seating, while the part present die protection system prevents errors, enhancing reliability in high-volume production.

• Process: Core insertion, swaging for bonding, ogive forming (tangent or secant profiles), cannelure rolling, and optional tipping or boat-tailing
• Outcome: Uniform projectile integrity, precise tolerances (±0.001″ ogive radius), minimal defects like jacket distortion or core voids
• Applications: FMJ, JHP, and AP projectiles for pistol, rifle, and large-caliber bullets (.380 ACP to .50 BMG)

Servo-Controlled Transfer System The OTM-5176A’s servo-controlled transfer system, featuring a servo transfer bar, individual servo strippers, and servo ejectors, ensures seamless movement of components through multiple assembly stations. This system supports complex sequences like core seating, jacket compression, and final forming, maintaining precise alignment for high-integrity bonds. The interchangeable tooling packs allow rapid caliber changes, making the press versatile for modular or integrated bullet production lines. Dual-feed systems for jackets and cores enhance throughput, with anti-static features preventing buildup during energetic material handling and scrap chutes for efficient cleanup of trim or ejects.

• Mechanism: Servo-driven transfer bar, strippers, and ejectors for multi-station assembly
• Benefit: Enhances precision and efficiency in projectile unification, reducing handling defects and cycle times
• Applications: Assembled bullets for FMJ rounds, JHP expansions, multi-piece penetrators

Bullet Assembly for Ammunition Bullet assembly is a cornerstone of ammunition manufacturing, involving the precise unification of cores (lead, steel, or composite) into jackets via swaging, followed by shaping the ogive for ballistic efficiency and adding cannelures for reliable crimping and lubricant retention in cast designs. The OTM-5176A excels in producing assembled projectiles for applications requiring superior accuracy, penetration, and expansion, such as military FMJ or hunting JHP rounds. The servo-driven system optimizes seating pressure, ogive curvature (e.g., secant for low-drag profiles), and cannelure depth, reducing material waste and ensuring compatibility with subsequent loading processes like case insertion. Industry insights highlight assembly’s role in achieving consistent muzzle velocity, mushrooming, and terminal performance, making the OTM-5176A a critical tool for precision ammunition crafting.

• Advantages: Strong core-jacket bond, aerodynamic ogive for reduced drag, cannelure for secure seating and reduced fouling
• Applications: Projectiles for .380 ACP to .50 BMG, including military-grade FMJ and JHP hunting bullets
• Servo Benefits: Programmable force and motion improve assembly quality, repeatability, and energy efficiency

Robust Press Design The OTM-5176A features a weldment frame engineered for durability, with a machined bolster plate and press ram honed for flatness and accuracy. The 75-ton press capacity and heavy-duty linear ram guides ensure stability during high-force assembly operations, while the servo indexer enhances cycle efficiency. A coolant tank with sealed drain area, automatic oiler, and scrap chute for trim rings or flash hole ejects maintain a clean, efficient workspace. The full machine enclosure, magnetic door interlocks, and 3/8″ polycarbonate guarding provide operator safety, making the press a reliable, low-maintenance solution.

• Components: 75-ton servo ram, coolant system, carbide tooling, servo indexer
• Benefit: Ensures long-term reliability and high-throughput projectile assembly
• Environment: Sealed coolant system and scrap chute minimize mess and maintenance