End-face trapezium spline broach

A spline broach of trapezoidal end surfaces, which relates to a broach consisting of a front slider, a guiding part and a cutting part, wherein the main body of the cutting part of the utility model is rectangular, composed of chamfered teeth and trapezoidal teeth both of trapezoidal cross section; a chip holding groove is reserved between each two adjacent teeth, and a chip-breaker is opened on each chip. By applying teeth of trapezoidal cross sections and with well determined tool angles through experiments, the utility model can produce splines of trapezoidal cross sections as needed, with a high accuracy and stable quality.