Diamond reamer and machining method thereof

The invention provides a diamond reamer and a machining method thereof. The diamond reamer comprises a reamer rod base body and a diamond reamer body welded to the reamer rod base body, the end, close to the diamond reamer body, of the reamer rod base body is a receding section, a plurality of chip grooves are formed in the diamond reamer body, and the chip grooves extend towards the receding section. A circumferential cutting edge is formed on the diamond reamer body. Therefore, a traditional slotting soldering lug technology can be abandoned, the machining production efficiency of the diamond reamer is improved, the strength of the reamer can be effectively improved, and the service life of the reamer is prolonged. According to user requirements, the edge diameter of the diamond reamer can be smaller, more circumferential edges can be formed, and the user requirements are met. 本发明提供了一种钻石铰刀及其加工方法，其中，钻石铰刀包括刀杆基体以及焊接于刀杆基体上的钻石刀体，刀杆基体在靠近钻石刀体的一端为避位段，钻石刀体上开设有多个排屑槽，排屑槽向避位段上延伸。钻石刀体上形成有周刃。以此可抛开传统开槽焊片工艺，提高钻石铰刀的加工生产效率，并