Steering rack and method of manufacturing the same

A steering rack comprising:

• a body part having ends, each end of the body part of the steering rack connectable to a respective wheel;
• and
• a threaded part provided on the body part of the steering rack and having screw gear teeth configured to be engageable with a ball nut configured to be rotatable by a motor,
• wherein a backlash of the first area of the screw gear teeth positioned relatively adjacent to a center of the threaded part of the steering rack is different from a backlash of the second area of the screw gear teeth positioned relatively adjacent to ends of the threaded part of the steering rack.

A method of manufacturing a steering rack, the method comprising:

• preparing a body part of the steering rack having ends, each end of the body part connectable to a respective wheel;
• and
• forming a threaded part on the body part of the steering rack,
• wherein the forming of the threaded part on the body part of the steering rack includes forming screw gear teeth, engageable with a ball nut which is rotatable by a motor, on an outer circumferential surface of the body part of the steering rack, the forming of the screw gear teeth on the outer circumferential surface of the body part of the steering rack includes:
• processing a first area of the screw gear teeth positioned relatively adjacent to a center of the threaded part of the steering rack;
• and
• processing a second area of the screw gear teeth positioned relatively adjacent to ends of the threaded part of the steering rack, and
• the processing of the first area of the screw gear teeth and the processing of the second area of the screw gear teeth are performed such that a processing depth of the first area of the screw gear teeth positioned relatively adjacent to the center of the threaded part of the steering rack is different from a processing depth of the second area of the screw gear teeth positioned relatively adjacent to the ends of the threaded part of the steering rack.