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       Horizontal broaching machine As a mechanical processing industry, we often encounter some stepped sleeves and disc-shaped parts, especially when processing the internal spline of the differential straight-tooth bevel half-shaft gear, we need to position and broach according to the outer circle and end face of the processed internal spline.

From the current process equipment point of view, some enterprises newly purchased internal spline broaching equipment is Horizontal broaching machine which can easily ensure the accuracy of the internal spline; however, for some traditional old enterprises or small and medium-sized private enterprises, most of them still use traditional horizontal broaching machines. When broaching parts with a horizontal broaching machine, due to the combined gravity of the broaching part quality and the broach quality, the broaching force of the broach does not coincide with the center line of the broaching part. When detecting the end face and outer circle end face circular runout and radial circular runout of the internal spline detection part, a large dispersion is generated; therefore, the research and development of a new type of horizontal broaching machine, when floating positioning broaching internal spline, can ensure that the broaching force of the broaching tool coincides with the center line of the part, improve work efficiency and accuracy, has significant practical and promotion significance.

The quick-change bushing in the innovative, improved and optimized tooling is cylindrical, Horizontal broaching machine The inner diameter matches the outer diameter of the part to be broached (leaving a unilateral clearance of 0.03~0.05mm). Thrust self-aligning roller bearings are provided on the outer ring near the step end, and the inner diameter of the bearing ring is transitionally matched with the outer ring of the quick-change bushing. A snap ring groove is provided on the outer wall of the other end of the quick-change bushing, and a snap ring is provided in the snap ring groove. The snap ring is finally matched with the inner diameter of the pull plate, with a small clearance (0.8~1.0mm). The outer ring of the thrust self-aligning roller bearing seat ring and the inner diameter of the bearing seat pull plate are a small interference fit. An O-ring rubber ring is set in the cavity of the bearing seat pull plate, and the inner diameter of the O-ring rubber ring is a small clearance fit with the outer diameter of the bearing ring. A bearing stop ring seal is provided at the end of the bearing ring, fixed to the end face of the bearing seat pull plate, and the axial clearance between the two is 0.5~1.0mm. The bearing seat pull plate is fixed to the top plate of the horizontal broaching machine.

       Horizontal broaching machine When processing the circular internal spline workpiece to be broached, the workpiece journal is fitted into the quick-change bushing, and the stepped surface of the circular internal spline workpiece to be broached is close to the end face of the quick-change bushing. The outer circle of the small journal and the inner diameter of the quick-change bushing have a small clearance (0.03~0.05mm on one side). When the broach moves forward under the action of the broaching force of the broaching machine through the inner hole of the part to be broached, the thrust self-aligning roller bearing can automatically self-align under the action of external force, so that the center line of the bearing is always consistent with the stretching direction, thus ensuring the coaxiality of the center line of the broached internal spline and the outer circle of the broached part, and at the same time ensuring the perpendicularity of the center line of the broached internal spline and the positioning datum end face, so as to meet the accuracy requirements of the broached part.