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我厂新研制的齿条是轧辊车床床身上的一个重要部件(见图1)。它安装在两刀架导轨间通过它与进给箱Ⅳ轴轴齿轮的啮合,带动大刀架、上刀架、进给箱、走台等部件沿导轨滑动,从而实现车床对轧辊或其它轴类的加工。由于所带动的部件重达6 000 kg左右,且在加工时也会受到切削工件的阻力,这需要齿轮轴通过与齿条的啮合传动来克服阻力,所以齿条应具有较高的强度及齿面硬度来满足其工作需要。设计选用了40Cr材质加工,要求T265,齿部D0.5-500,齿部精度6-6D级。
Our newly developed rack is an important part of the roll lathe bed body (see Figure 1). It is installed between the two turret guide rails through its engagement with the feed box Ⅳ shaft gear, driven turret, the turret, feed box, take the stage and other components along the rail slide, so as to achieve the lathe on the roll or other shaft Processing. Due to the weight of about 6,000 kg driven parts, and in the processing of the workpiece will be subject to resistance, which requires the gear shaft through the meshing with the rack to overcome the resistance, so the rack should have a higher strength and teeth Surface hardness to meet their work needs. Design selected 40Cr material processing, requirements T265, tooth D0.5-500, tooth accuracy 6-6D level.