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圆孔拉刀由于生产效率高、成本低、加工精度高,因此被广泛地应用于生产实践中。随着对产品质量要求的不断提高,对圆孔拉刀的结构精度、质量也就要求有所改进,我们厂生产的L195五种齿轮。由于工件材质为45号钢,调质处理。因此内孔表面粗糙度不易达到(?)(原光洁度为▽7),刀具使用寿命较低。为此设计生产了大齿距、曲线齿背圆孔拉刀,经生产使用效果很好,表面粗糙度达到了(?),提高了刀具使用寿命保证了产品质量。一、基本数据工件名称:起动齿轮工件材料:45号钢
Round hole broach due to high production efficiency, low cost, high precision, it is widely used in production practice. With the continuous improvement of product quality requirements, the structure of the round hole broach accuracy, quality also requires improvement, we plant the L195 five kinds of gears. As the workpiece material is 45 steel, quenched and tempered. Therefore, the inner hole surface roughness is not easy to achieve (?) (The original finish ▽ 7), the tool life is low. To this end, the design and production of large pitch, curved tooth back round hole broach, produced by the use of good results, the surface roughness reached (?), Increased tool life to ensure product quality. First, the basic data of the workpiece name: Start gear workpiece material: 45 steel