The PUMA4100 series machine tools are used in the production line for automotive rear axle housings.

　　The PUMA4100 series machine tools are horizontal turning centers specially designed for machining medium- to large-sized workpieces. This series features powerful cutting capabilities, utilizing a two-stage gearbox and high-torque motors, and boasts a highly rigid, hardened guideway structure. With the optional Y-axis function and the optional Dean machine tool thread-machining capability, it can handle complex workpieces, making it an ideal solution for numerous industries and applications. Beijing Smart technology Co.,ltd. has deployed this model on its automotive rear axle housing machining line, enabling the completion of large, complex parts in a single setup. Currently, this production line operates stably, delivering value to customers.

　　The rear axle housing is a critical component of the vehicle, forming part of the drive axle together with the final drive, differential, and wheel‑drive mechanism. The drive axle housing not only supports the vehicle’s weight and transmits loads to the wheels but also bears the reaction forces and moments arising from the traction, braking, lateral, and vertical forces transmitted by the driven wheels, which are then conveyed through the suspension to the frame or body. If the housing is subjected to impact loads generated between the wheels and the road surface, it may deform or fracture. Therefore, the drive axle housing must possess adequate strength, stiffness, and favorable dynamic characteristics; appropriately designing and manufacturing the drive axle housing is an important measure for enhancing vehicle stability.

　　The PUMA 4100 series machine tools deliver exceptional machining performance, thanks to their two-speed gearbox, high-torque spindle motor, and robust hardened‑rail structure, which together optimize cutting efficiency. This gearbox is engineered to provide the PUMA 4100 spindle with high power and substantial torque, thereby enhancing productivity and process reliability in heavy‑duty machining operations.

　　The PUMA 4100 series machine tools offer a turning diameter of up to Ø650 mm and a turning length of 3 m. Their spindle speed can reach 1,500 r/min, with a spindle power (30 min/continuous) of 45 kW / 37 kW and a spindle torque of 4,038 N·m. These turning centers feature chuck diameters ranging from 12 to 21 inches, and can be configured with large‑bore spindles, turning lengths of 1 m, 2 m, or 3 m, and either 2‑axis or Y‑axis configurations. The turret comes standard with 12 tool positions; for enhanced rigidity, an optional 10‑position turret is available. Turret indexing is driven by a servo motor, ensuring fast and reliable tool changes. On the M and Y models, a proprietary BMT85P turret design has been implemented, significantly improving the machines’ heavy‑duty milling performance. Additionally, the newly designed operator panel and the optional threading capability further enhance productivity.