Abstract: Apparatus and a method for burnishing gears incorporating a pair of gear racks having opposed forming faces with teeth spaced therealong for meshing with a toothed gear received therebetween to provide the sole support for the gear as it is rotated by rack movement while the rack teeth burnish the gear teeth. A loader is positioned on one lateral side of the gear racks and includes a movable gripper mechanism that positions the gears to be burnished between the racks for meshing engagement therewith as the racks are driven by a reciprocal drive mechanism of the apparatus. Grippers of the gripper mechanism grip the gears during loading and have pushers that push the burnished gears to a delivery guide on the opposite lateral side of the gear racks from the loader.

Abstract: Apparatus and a method for burnishing gears incorporating a pair of gear racks having opposed forming faces with teeth spaced therealong for meshing with a toothed gear received therebetween to provide the sole support for the gear as it is rotated by rack movement while the rack teeth burnish the gear teeth. A loader is positioned on one lateral side of the gear racks and includes a movable gripper mechanism that positions the gears to be burnished between the racks for meshing engagement therewith as the racks are driven by a reciprocal drive mechanism of the apparatus. Grippers of the gripper mechanism grip the gears during loading and have pushers that push the burnished gears to a delivery guide on the opposite lateral side of the gear racks from the loader.

Abstract: A grinding machine and dresser therefor for dressing a grinding wheel of the machine to grind a crooked configuration in a workpiece. The dresser includes a holder for a template having the cutting profile of the grinding wheel as well as a holder for a cutting tool that dresses the wheel. The tool holder is mounted for movement with a template follower in an antifriction manner so that the cutting tool dresses the grinding wheel with the cutting profile. Cutting profiles for grinding precise toothed configurations are possible with the dresser. A carriage of the machine on which the dresser is mounted is slidably movable with respect to a base of the machine by axial movement of a dual threaded drive screw having right and left-hand threaded portions spaced axially along its length.

Abstract: A rotary forming machine and a rotary tool utilized therewith for performing a forming operation on a workpiece. A work spindle rotatably mounts the workpiece about a first axis and a pair of tool spindles which each support a plurality of the tools are rotatably mounted about spaced second axes on opposite sides of the first axis. Each tool has a partially circular forming face extending about the associated tool spindle axis for an angle less than 180 degrees with forming projections that engage the workpiece. Associated pairs of the tools on the two tool spindles cooperate with each other to simultaneously form the workpiece in an opposed relationship to each other. Each tool includes a metallic body with a leading end and a trailing end between which its forming face extends as do base and side wall surfaces. The rotary tools preferably have elongated shapes with maximum heights that are approximately 25 percent of their length.

Abstract: A grinding machine and dresser therefor for dressing a grinding wheel of the machine to grind a crooked configuration in a workpiece. The dresser includes a holder for a template having the cutting profile of the grinding wheel as well as a holder for a cutting tool that dresses the wheel. The tool holder is mounted for movement with a template follower in an antifriction manner so that the cutting tool dresses the grinding wheel with the cutting profile. Cutting profiles for grinding precise toothed configurations are possible with the dresser. A carriage of the machine on which the dresser is mounted is slidably movable with respect to a base of the machine by axial movement of a dual threaded drive screw having right and left-hand threaded portions spaced axially along its length.

Abstract: A rotary forming machine and a rotary tool utilized therewith for performing a forming operation on a workpiece. A work spindle rotatably mounts the workpiece about a first axis and a pair of tool spindles which each support a plurality of the tools are rotatably mounted about spaced second axes on opposite sides of the first axis. Each tool has a partially circular forming face extending about the associated tool spindle axis for an angle less than 180 degrees with forming projections that engage the workpiece. Associated pairs of the tools on the two tool spindles cooperate with each other to simultaneously form the workpiece in an opposed relationship to each other. Each tool includes a metallic body with a leading end and a trailing end between which its forming face extends as do base and side wall surfaces. The rotary tools preferably have elongated shapes with maximum heights that are approximately 25 percent of their length.