Case Draw Press

Advanced Deep Draw System

Servo-Driven Deep Drawing

The OTM-5150 leverages servo-driven technology to execute a multi-stage deep drawing process, transforming brass cups or blanks into seamless, near-net shape casings and bullet jackets with precise wall thickness and complex geometries. The 75-ton servo press ram, adjustable from a 2-inch to 8-inch stroke, allows dynamic control over force, stroke length, and forming speed via the Weintek HMI, enabling tool temperature adjustments and multi-program memory for storing forming parameters. This precision ensures high-accuracy output for calibers like 338 Lapua, while the part present die protection system prevents errors, enhancing reliability in high-volume production.

• Process: Multi-stage deep drawing for casings and bullet jackets
• Outcome: Uniform wall thickness, precise profiles, minimal defects
• Applications: Pistol, rifle, and large-caliber casings (5.7×28 to 338 Lapua), bullet jackets

Servo-Controlled Transfer System

The OTM-5150’s servo-controlled transfer system, featuring a servo transfer bar, servo strippers, and servo ejectors, ensures seamless movement of parts through multiple forming stations. This system supports complex forming sequences, maintaining precise alignment for cups, drawn tubes, or net-shape parts. The interchangeable tooling packs allow rapid caliber changes, making the press versatile for both casing and bullet assembly applications. Multi-feed systems can be integrated for multi-piece assemblies, enhancing flexibility for specialty ammunition production.

• Mechanism: Servo-driven transfer bar, strippers, and ejectors for multi-station forming
• Benefit: Enhances precision and efficiency in complex part production
• Applications: Deep-drawn casings, bullet jackets, multi-piece bullet assemblies

Deep Drawing for Ammunition

Deep drawing is a cornerstone of ammunition manufacturing, forming brass into elongated, seamless casings and jackets with high structural integrity. The OTM-5150 excels in producing deep-drawn components for applications requiring high-pressure resistance and dimensional accuracy, such as military and large-caliber rounds. The servo-driven system optimizes draw depth, wall thickness, and surface finish, reducing material waste and ensuring compatibility with subsequent processes like necking or bullet assembly. Industry insights emphasize deep drawing’s role in achieving reliable cartridge performance, making the OTM-5150 a critical tool for precision manufacturing.

• Advantages: Seamless construction, high strength, reduced waste
• Applications: Casings and jackets for 5.7×28 to 30mm GAU 8, including military rounds
• Servo Benefits: Adjustable stroke and force improve forming quality and flexibility

Robust Press Design

The OTM-5150 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 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 1/4″ 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 production
• Environment: Sealed coolant system and scrap chute minimize mess and maintenance