Motek Hall 8, 8304 Stand
SPN Swabia precision has developed a 3-stage precision bevel gear with media ducts for a leading supplier of robots and automatic application systems. The development and series production focused on the last three axes, which represent the "wrist" of the robot in a figurative sense.
The transmission input is formed by three drive shafts, which are connected to the respective drive motor during robot assembly. The first gear stages consist of ground and clearance-free adjustable spur gear stages with high demands on concentricity and uniformity. The kinematics is composed of partially arranged bevel gears with special axial angles. Especially important is a minimal twisting game: Even slight vibrations or fluttering variations lead to irregularities in the application process.
The drive with hollow shaft is also tailor-made for the application: in the center of the gearbox there is a channel of 70 cm length for the transport of all media necessary for the processes. The inner wall surface of the channel is free of ledges or edges to prevent rubbing of the cables and hoses by friction.
After the first prototypes and tests, a considerable number of series units have already been delivered to the customer.