The utility model discloses a top rotary lathe tailstock, including top, a sliding sleeve and a bearing seat; the sliding sleeve is mounted on the supporting seat and the inner hole of the clearance fit; top is arranged on the front end of the sliding sleeve; the top bearing seat and a bearing is arranged between the top and second sliding sleeve is sheathed in the sliding sleeve bearing II; the front end of the supporting seat; the top hole is sheathed on the bearing II, top thread connection at the other end of the top support; further improvement is that the top rotary lathe tailstock also includes a manual feeding mechanism, a sliding sleeve screw; the outer wall is provided with axial keyway, screw thread is connected to the supporting seat and extends into the sliding sleeve outer wall axial keyway the back end is provided with a sliding sleeve; the axial movement of the sliding sleeve can drive a manual feeding mechanism; mounting hole wall sliding sleeve hole is arranged on the supporting seat cup. The utility model has the advantages of convenient adjustment. When used, the workpiece rotates together with the top without relative rotation, which does not cause friction, significantly prolongs the service life of the top, and significantly reduces the rotation resistance of the workpiece when used.
【技术实现步骤摘要】
顶尖旋转式车床尾架
本技术涉及车床
,具体而言,涉及一种车床尾架。
技术介绍
车床尾架包括顶尖、滑套、支承座,滑套安装在支承座内孔中,并间隙配合,顶尖设置在滑套的前端,使用时,一般用顶尖顶住工件。这种车床尾架的主要缺陷在于:工件一般是旋转的,而顶尖是不转的,工件相对于顶尖转动,相互产生摩擦,一方面使顶尖使用寿命短;另一方面,增加工件旋转阻力。
技术实现思路
本技术针对现有技术的不足,提出一种显著延长顶尖使用寿命,显著减小使用时工件旋转阻力的顶尖旋转式车床尾架。本技术通过下述技术方案实现技术目标。顶尖旋转式车床尾架,包括顶尖、滑套、支承座;所述滑套安装在支承座内孔中,并间隙配合;所述顶尖设置在滑套的前端;其改进之处在于:所述顶尖、滑套之间设有顶尖支承座、轴承Ⅱ;所述轴承Ⅱ套装在滑套前端;所述顶尖支承座一端内孔套装在轴承Ⅱ上,顶尖螺纹连接在顶尖支承座的另一端。上述结构中,所述顶尖旋转式车床尾架还包括螺钉、手动进给机构;所述滑套外壁设有轴向键槽,螺钉螺纹连接在支承座上,伸入滑套外壁轴向键槽中;在滑套后端设有可以驱动滑套轴向移动的手动进给机构。上述结构中,所述手动进给机构包括传动螺母、丝杆、轴承Ⅲ、手轮;所述传动螺母固定连接在滑套后端;所述丝杆的一端贯穿传动螺母,伸入滑套内孔中,与传动螺母螺纹连接,丝杆的另一端与手轮固定连接;所述传动螺母、手轮之间的丝杆支承在轴承Ⅲ中,轴承Ⅲ安装在支承座内孔中。上述结构中,所述支承座上安装滑套内孔的孔壁上设有油杯。本技术与现有技术相比,具有以下积极效果:1.顶尖、滑套之间设有顶尖支承座、轴承Ⅱ,轴承Ⅱ套装在滑套前端,顶尖支承座一 ...
【技术保护点】
一种顶尖旋转式车床尾架,包括顶尖(2)、滑套(5)、支承座(7);所述滑套(5)安装在支承座(7)内孔中,并间隙配合;所述顶尖(2)设置在滑套(5)的前端;其特征在于:所述顶尖(2)、滑套(5)之间设有顶尖支承座(3)、轴承Ⅱ(4);所述轴承Ⅱ(4)套装在滑套(5)前端;所述顶尖支承座(3)一端内孔套装在轴承Ⅱ(4)上,顶尖(2)螺纹连接在顶尖支承座(3)的另一端。
【技术特征摘要】
1.一种顶尖旋转式车床尾架,包括顶尖(2)、滑套(5)、支承座(7);所述滑套(5)安装在支承座(7)内孔中,并间隙配合;所述顶尖(2)设置在滑套(5)的前端;其特征在于:所述顶尖(2)、滑套(5)之间设有顶尖支承座(3)、轴承Ⅱ(4);所述轴承Ⅱ(4)套装在滑套(5)前端;所述顶尖支承座(3)一端内孔套装在轴承Ⅱ(4)上,顶尖(2)螺纹连接在顶尖支承座(3)的另一端。2.根据权利要求1所述的顶尖旋转式车床尾架,其特征在于:所述顶尖旋转式车床尾架还包括螺钉(6)、手动进给机构;所述滑套(5)外壁设有轴向键槽,螺钉(6)螺纹连接在支承座(7)上,伸入滑套(5)外壁轴向键槽中;在滑套(5)...
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