Gear to Shaft Assembly for Hydraulic Pump
A leading manufacturer of hydraulic pumps required a method to permanently affix various sized gears to shafts. The gears were bronze, and the shafts were 400 series stainless steel. After press fitting the gears into position, they would drill a hole partially through the assembly, install a heavy duty SPIROL® Coiled Spring Pin, and stake the entrance point for maximum security. Prior to SPIROL's involvement, this process was done manually using 3 different stations. SPIROL offered to consolidate all operations into one complete installation machine. Since the customer offered many different gear/shaft assembly sizes, the machine needed to be versatile enough to accommodate the 11 existing assemblies, as well as be able to handle new variations as designed. Tooling changeover had to be quick and simple, with little to no machine adjustment. The cycle time had to be less than a minute, and drill bits were expected to last at least 500 cycles.