4 results about "Calipers" patented technology

Provided is a disk brake improved in production efficiency by simplifying a structure for retaining the braking force of a parking brake. A disk brake is equipped with a piston holding mechanism having a ball-and-ramp mechanism in which balls are moved by rotation transmitted from a motor, causing a rotary-rectilinear ramp to press a piston. The rotary-rectilinear ramp has an external thread engaged with an internal thread formed on a base nut immovable in a rotor axis direction relative to a caliper body. The external thread, when a force is applied thereto from the piston in the rotor axis direction, can retain the position of the rotary-rectilinear ramp in the rotor axis direction. Thus, the structure for retaining the braking force of the parking brake can be simplified to improve the production efficiency.

The invention discloses a clamping device for fusion welding of an automobile part. The clamping device comprises a clamping mechanism, a carrying mechanism and a controller, wherein the clamping and fixing mechanism comprises a first supporting plate, a first motor, a first hinge arm, a second motor, a second hinge arm, a third motor, a third hinge arm, a fourth motor, a storage table, a servo motor, a bevel worm gear, three bevel worms, three lead screws, three sliding blocks and three asynchronous motors, and the interior of the first supporting plate is in threaded connection with the first motor through a screw. The servo motor, the bevel worm gear, the bevel worms, the lead screws, the sliding blocks and calipers in the clamping mechanism are matched, so that the requirement for clamping and displacement splicing of multiple sets of welding parts loaded at the same time is met, the requirement for precise centering of the distance between the parts can be met through the bevel worm gear in the displacement period, and the relative angle between the parts can be adjusted freely through the asynchronous motors, so that workers are assisted in completing the welding task.

The invention belongs to the field of orthopedic surgical apparatuses, in particular to a structure of a quantitative excision tool for infrapatellar fat pads. The excision device for the infrapatellar fat pads comprises a patellar fixing device, a locating rod, a patellar ligament measuring rod and an excision knife, and the patellar fixing device comprises a caliper and a patellar ligament fixing rod. The excision device for the infrapatellar fat pads can be used for excising the excess infrapatellar fat pads to reveal the surgical vision, further effectively retains areas with dense blood vessels of the infrapatellar fat pads, and reduces complications which occur because the infrapatellar fat pads are excised too much and the areas of dense blood vessels are excised together. The excision device for the infrapatellar fat pads is convenient for joint surgeons to manipulate and conducive to the conduction of total knee arthroplasty surgeries.