对于汽车孔类转向节加工时需要通过夹持机构进行固定。一般采用压板进行固定，压板压紧的缺陷在于既费时，并且当车床主轴转速比较高时，压板与产品之间的摩擦力不够，还会导致压板绕螺杆旋转，使压紧失效，加工产品报废。

The clamping mechanism should be fixed for the machining of the steering knuckles. Generally, the press plate is used for fixing. The defect of pressing plate is time consuming. When the spindle speed of lathe is relatively high, the friction between the press plate and the product is not enough. It will also cause the press plate to rotate around the screw, which makes the compacting failure invalid and the processing product scrapped.

汽车万向节液压夹具

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 includes a clamping plate 1, and four clamping mechanisms 2 are arranged on the chuck 1. The clamping plate 1 is positioned at the position below the clamping mechanism 2, and a support 3 is arranged. When used, the workpiece is clamped between the clamping mechanism 2 and the support 3. The clamping mechanism comprises 2 clamping plate 20, more please pay attention to micro mechanical technology 20 end ring hinge rod 21 commune splint, 20 position hinge rod splint away from one of the 21 vertical plates 22, 20 the other end fixed splint pins 23, 22 vertical plates fixed on the clamping plate 1, also includes a turntable 4, ejector rod 21 fixed on a turntable 4 axis turntable, 4 and 5 by setting the joint bearing 6 connected at one end of the output shaft 5 and lathe hydraulic system is connected with the drive shaft to move along the axial direction.

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 in use, the ejector rod 21 push the workpiece clamping plate 20 is firmly fixed in pin 23 and support 3, due to the clamping of the workpiece by lathe hydraulic system with easy operation, time saving, more please pay attention to micro mechanical technology industry and the top ring commune through dynamic splint so that pins the workpiece splint on the way therefore, when the lathe spindle speed is high, pressure 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。

4 and 5 axis turntable by setting joint bearing 6 connections, 4 around the uneven quality of the turntable (which is composed of a disc in the four corners of the digging part), when the lathe spindle speed is relatively high, the centrifugal force caused by the wheel around is not the same, there are around the turntable with the lathe spindle is connected with the thread axis trend of centrifugal force when the wheel around the same time, the screw shaft more please pay attention to micro mechanical technology industry joint bearing outer ring and commune circle around the turntable can be connected with the lathe spindle rotating a certain quantity, so you can avoid the turntable and the clamping mechanism will push rod out of death, no longer cause the top rod bearing 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 process the left-handed products of the same type of steering knuckles, and also the right hand products. Please pay attention to micro mechanical technology industry more of a pair of clamping mechanism of commune circle sharing achieve the right hand can save production costs of clamping mechanism, avoid changing the clamping mechanism of clamp 1 is provided with a mounting hole (figure not shown), a weight block 7 is fixed on the mounting hole, can change the quality of and the distribution of the block through the addition and subtraction or to adjust the distribution of the overall quality of hydraulic clamp, and the processed products of the cylindricity meet the requirements of the drawings.