Chuck with improved gripping stroke

A chuck for gripping a workpiece, the chuck comprising:

• a chuck body;
• a jaw connected to the chuck body for constrained movement relative to the chuck body along a jaw path in jaw-closing and jaw-opening directions;
• an actuator body connected to the chuck body for constrained movement relative to the chuck body along an actuator path;
• and
• a slider body connected to the chuck body for constrained movement relative to the chuck body along a slider body path,
• wherein the slider body is connected to the jaw for constrained movement relative to the jaw along a slider-body-to-jaw path,
• wherein the slider body is connected to the actuator body for constrained movement relative to the actuator body along a slider-body-to-actuator-body path,
• wherein an angle A is formed between the actuator path and slider-body-to-actuator-body path,
• wherein an angle J is formed between the actuator path and the slider-body-to-jaw path,
• wherein the angle A is smaller than the angle J,
• wherein an angle S is formed between the slider body path and the slider-body-to-jaw path, and
• wherein the angle S is between 90° and 135°.

A chuck for gripping a workpiece, the chuck comprising:

• a chuck body;
• a jaw connected to the chuck body for constrained movement relative to the chuck body along a jaw path in jaw-closing and jaw-opening directions;
• an actuator body connected to the chuck body for constrained movement relative to the chuck body along an actuator path;
• and
• a slider body connected to the chuck body for constrained movement relative to the chuck body along a slider body path having one curvilinear or linear translational degree-of-freedom,
• wherein the slider body is connected to the jaw for constrained movement relative to the jaw along a slider-body-to-jaw path,
• wherein the slider body is connected to the actuator body for constrained movement relative to the actuator body along a slider-body-to-actuator-body path, and
• wherein an angle A formed between the actuator path and slider-body-to-actuator-body path is greater than 5°,
• wherein the slide body path, slider-body-to-jaw path, and slider-body-to-actuator-body path are each linear.