目前世界上大多数国家的切齿夹具,都是采用碟形弹簧胀套一类定心夹紧装置。我厂铣削准双曲面从动锥齿轮时采用的碟形弹簧胀套(见图),是由两片相同的胀片对合,用耐油橡胶粘结而成的。在它的每一胀片内,均开有圆环状弧形凹槽,并对槽面有较严的粗糙度要求(不大于Ral.6 μm)。此槽有两个作用:一是为放置、固定 O 型橡胶圈,使其在浇注粘性耐油橡胶时有固定的位置,不致使两碟形胀片在频繁拉压而引起的弹性变形中发生滑移和错位。以前,为了牢固地 At present, cutting teeth fixtures in most countries in the world adopt a type of centering clamping device with a disc spring expanding sleeve. I plant milling hypoid driven bevel gear used in the disc spring expansion sleeve (see Figure), is by the same two pieces of expansion and expansion, with oil-resistant rubber bonded together. In each of its expansion tablets, are open circular arc groove, and the groove surface roughness requirements (not more than Ral 6 μm). This groove has two functions: First, to place and fix the O-ring so that it has a fixed position when pouring the viscous oil-resistant rubber, so as to prevent the two disk-shaped bulges from sliding in the elastic deformation caused by frequent tension and compression Move and dislocation. In the past, in order to firmly