Abstract: The present invention discloses a wheel machining technology in which blank quantity is furthest removed by using a 90-degree external turning tool. Under the premise that the rotation direction of a wheel is unchanged, an upper trench of a groove is processed by using a left-handed special cutting-off cutter. Under the premise that the rotation direction of the wheel is unchanged, a lower trench of the groove is processed by using a right-handed special cutting-off cutter. The left-handed special cutter and the right-handed special cutter are added to the wheel machining technology disclosed by the present invention, so as to complete the processing of a groove of an outer wheel rim; a processing program can be pre-edited, so that processed effects conform to the design requirements of drawings of products.

Abstract: The present invention provides a machining method of a valve hole and the valve hole machined with the method, wherein the method includes the following steps: (1) performing drilling machining for a valve hole by adopting a valve hole drill bit to achieve a predetermined machining dimension; (2) performing fine machining by adopting a reamer to allow the diameter of the valve hole to reach a stable dimensional state and removing impurities and aluminum scraps on the surface of the valve hole, thereby meeting the requirement of final fine grinding extrusion machining for a blank; and (3) performing final precision machining by adopting a grinding extrusion tool. A technical solution of the present invention can improve the machining precision and strength for the valve hole, prevent the generation of hot cracks and improve the anti-fatigue strength of the valve hole by more than 20%.