Sequentially and Linearly Applied Single Pivot Clamping/Locating System
Original Publication Date: 1988-Nov-01
Included in the Prior Art Database: 2005-Feb-15
A clamping arm consists of two spring-loaded locating bearings that move about the pivot axis of an arm assembly. This configuration allows for constant point-contact linear pressure, applied sequentially, to seat the part being clamped, and to prevent any movement or rotation. This locating system uses the single clamping arm to achieve three-point location. The system works in the following manner. As shown in the diagram, clamp arm 1 rotates about pivot point O, causing locator bearing 2 to apply pressure to part 3, which is then clamped at a central point between locators A and B. The pressure supplied by spring 4 is applied at a constant point and in a linear direction (Y-axis) because pivot slot 5 is machined in an arc centered about pivot point O. The net moment in the part is 0, so there is no rotational motion.