Camshaft for Common Rail High Pressure Oil Pump, Manufacturing Method and Interference Mounting Device for Same

摘要

The invention discloses a camshaft for a high-pressure common rail oil pump and a method for producing the same, the method using press-fit assembly between the mandrel (2) and the cam piece (1) and the required locking torque of the cam piece (1 ) can be achieved in relation to the mandrel (2), while at the same time ensuring the surface hardness of the cam piece (1). The camshaft according to the invention for a high-pressure common rail oil pump comprises a mandrel (2) and a cam piece (1) which is arranged on the mandrel (2), the locking torque of the cam piece (1) with respect to the mandrel (2 ) is not less than 500 NM after the cam piece (1) and the mandrel (2) are press-fit together using a heat process, and the surface hardness of the cam piece (1) is not less than HRC58. The method for producing a camshaft for a high-pressure common rail oil pump is characterized in that it comprises the following steps: performing press-fit assembly of a cam piece (1) and a mandrel (2) while simultaneously performing a heat treatment on Cam piece (1), d. H. Installing the mandrel (2) in the heat-expanded cam piece (1) in the heating phase during the tempering heat treatment, and then rapidly cooling the cam piece (1) equipped with the mandrel (2) in the cooling phase during the tempering heat treatment, thereby an assembled camshaft is created.