Hydraulic jig of automobile universal joint

液压夹具，包括夹盘 1，在夹盘 1 上设置四个夹持机构 2，夹盘 1 位于夹持机构2 正下方位置设置有支撑件 3，使用时，工件被夹持在夹持机构 2 和支撑件 3 之间。 夹持机构 2 包括夹板 20，更多行业技术请关注微 机械公社圈 夹板 20 一端铰接顶杆 21，夹板 20 远离顶杆 21 的位置铰接一竖板 22，夹板 20 另一端固定设置销子 23，竖板 22 固定在夹盘 1 上，还包括转盘 4，顶杆 21 固定在转盘 4 上，转盘 4 和轴 5 之间通过设置关节轴承 6 连接，轴 5 的一端和车床液压系统的输出端连接，以带动轴沿着轴向移动。

The hydraulic clamp, including the clamp plate 1, sets four clamping mechanism 2 on the clamp plate 1, and the clamp plate 1 is located at the position of the clamping mechanism 2 under the support 3. When used, the workpiece is clamped between the clamping mechanism 2 and the support 3. Clamping mechanism 2 includes splints 20, more industry technology please pay attention to the 20 end hinged top rod 21 of the micromechanical commune circle splint 21, the splint 20 away from the top rod 21 position articulated a vertical plate 22, the splint 20 fixed on the other end to set the pin 23, the vertical plate 22 is fixed on the disc 1, and also includes the turntable 4, the top bar 21 fixed on the turntable. A joint bearing 6 is connected between the turntable 4 and the shaft 5, and one end of the shaft 5 is connected to the output end of the hydraulic system of the lathe to drive the axis to move along the axis.

使用时，顶杆 21 推动夹板 20 使得工件被牢牢固定在销子 23 和支撑件 3 之间，由于通过车床自带的液压系统对工件夹紧，操作轻松省时，更多行业技术请关注微 机械公社圈 而且通过顶杆顶动夹板从而使得夹板上的销子压紧工件的方式，因此当车床主轴转速很高时，压紧也不会失效。

When used, the top rod 21 pushes the splint 20 so that the workpiece is firmly fixed between the pin 23 and the support part 3. Because the hydraulic system that is carried by the lathe is clamped to the workpiece, the operation is easy to save time, more industry technology is concerned with the micromechanical commune circle and the pin top plate is used to make the pin on the splint pressed to press the workpiece. Therefore, when the spindle speed of lathe is very high, it will not fail.

转盘 4 和轴 5 之间通过设置关节轴承 6 连接，转盘 4 四周的质量不均匀（它是由一个圆盘在四角上挖去一部分），当车床主轴转速比较高时，造成转盘四周的离心力不一样，转盘就有绕与车床主轴连接的螺纹轴旋转的趋势，当转盘四周的离心力不一样时，更多行业技术请关注微 机械公社圈 关节轴承外圈和转盘可以绕与车床主轴连接的螺纹轴有一定的旋转量，这样就可以避免转盘会与夹持机构中的顶杆摒死，不再造成顶杆承受径向力。支撑件 3 可拆卸的安装于夹盘 1 上，根据需要加工的产品类型的不同，只需要支撑件 3 的类型即可，提高了效率。既可以加工同类型孔类转向节的左手产品，也能加工右手产品。更多行业技术请关注微 机械公社圈 一副夹持机构实现左右手共用既能节省夹持机构的制作费用，避免了拆换夹持机构夹盘 1 上设置有装配孔（附图未示出），在装配孔上固定有配重块 7，可以通过加减或者更换调整块的质量和分布，从而调整液压夹具整体的质量分布，使加工出的产品的圆柱度符合图纸要求。

The turntable 4 and shaft 5 are connected by the joint bearing 6, and the quality of the turntable is not uniform 4 weeks. (it is made by a disc at four angles). When the spindle speed of the lathe is high, the centrifugal force around the turntable is different, and the turntable has the tendency to rotate around the thread axis connected to the spindle of the lathe. When the centrifugal force around the turntable is different, more industry technology please pay attention to the joint bearing outer ring and turntable in the micromechanical commune circle to have a certain amount of rotation around the thread shaft connected with the spindle of the lathe, so that the turntable can be avoided to die with the top rod in the clamping mechanism and no longer causes the top rod to bear radial force. The supporting piece 3 can be detachably mounted on the chuck 1, and only needs 3 types of support according to the type of products that need to be processed, so that the efficiency is improved. It can not only manufacture left-handed products of the same kind of knuckle knuckle, but also produce right-handed products. More industry technology please pay attention to the micromechanical commune circle a pair of holding agencies to realize the sharing of left and right hands to save the production cost of the clamping mechanism, and avoid the assembly holes (not shown in the appended drawings) on the clamp plate 1 of the dismantling and changing clamping mechanism. The weight block 7 is fixed on the assembly hole, and the quality of the adjustment block can be added or replaced. Distribution, so as to adjust the overall quality distribution of the hydraulic fixture, so that the cylindricity of the processed product meets the requirements of the drawing.