The invention proposes an intelligent clamping device and an active control method therefor. The rigidness of a clamping jaw of the intelligent clamping device can be controlled according to the contact deformation, and the designability of the rigidness of the clamping jaw is achieved through a piezoelectric control MFC-beam model. When the device is used for clamping, the device can intelligently adjust the size of a clamping force, and achieves the slow clamping of a clamped object. The device can flexibly designs the change curve of the clamping force according to the actual demands. The device also can design the diameter of an outer rotating ring and the length of an inner clamping jaw according to the size of the clamped object, and achieves the slow clamping of clamped objects at different sizes.

Intelligent clamping device and active control method therefor

The invention provides a clamping force test device for a finger oil cylinder under different oil pressures The clamping force test device comprises the finger oil cylinder, a pressure sensor, an oil pressure gauge, a pressure regulating valve and an oil pressure station, an oil jaw of the finger oil cylinder clamps the pressure sensor; an oil inlet of the finger oil cylinder is connected with the oil pressure gauge via a pipeline; the oil pressure gauge is connected with the pressure regulating valve via a pipeline; and the pressure regulating valve is connected with the oil pressure station via an oil pipe The clamping force test device provided by the invention can conveniently and quickly measure and calculate clamping forces of the finger oil cylinder under different oil pressures, thereby facilitating the design calculation, model selection and application by engineers Moreover, the difference among finger oil cylinders of different manufacturers and different models can be compared

Clamping force test device for finger oil cylinder under different oil pressures

The invention discloses a hub bearing grinding clamping force measuring device which comprises a force sensor, supporting clamps, a signal amplifier, an AD acquisition card and a computer; the force sensor, the signal amplifier, the AD acquisition card and the computer are sequentially connected with one another; the two ends of the force sensor are provided with threaded holes Mk respectively; and the supporting clamps of a rod-shaped structure are closely connected with the threaded holes Mk through one ends with threads respectively to form a sensing measuring mechanism; a hub bearing to betested is fixed on a machine tool through a pneumatic clamp device; the side wall of the hub bearing is provided with a pair of grooves in a radial direction; and the sensing measuring mechanism canbe embedded into a hub bearing inner ring channel in a radial direction of the hub bearing and perpendicular to the grooving direction. For the hub bearing grinding clamping force measuring device provided by the invention, through grooving treatment on the hub bearing and through the force sensor, the signal amplifier and the AD acquisition card which are connected with the computer, real-time accurate measurement of clamping force of the pneumatic clamp device is realized, operation is facilitated, and the processing precision is improved.

Hub bearing grinding clamping force measuring device and method

A piezoelectric type three jaw chuck clamping force measurement device belongs to the sensor and sensor measurement and control field, and comprises jaws, piezoelectric sensors, positioning sleeves, sealing rings and fastening bolts. By being used as the force sensing elements, the piezoelectric sensors are arranged on the jaws directly, are sealed by the positioning sleeves and the sealing rings, and are positioned and clamped by the fastening bolts. The measurement device of the present invention has the characteristics of high rigidity and precision, is convenient to use and package, realizes the real-time monitoring of the thin-wall cylindrical workpiece clamping forces during a mechanical processing process, and is practical for the processing quality.

Piezoelectric type three jaw chuck clamping force measurement device

The invention discloses a piezoelectric type thin-walled cylindrical part clamping force measuring device, belongs to the field of force measuring devices in piezoelectric type sensors, and particularly relates to a device for clamping force borne by a thin-walled cylindrical part in the clamping process. The device is composed of a base and branch measuring units. Each branch measuring unit is composed of a sensor fixing device and a length adjusting device. Each sensor fixing device is composed of a lower shell, a piezoelectric sensor, an upper shell, a fixing screw, a pre-tightening bolt and a right-hand thread boss. Each length adjusting device is composed of a right-hand locking nut, a lead screw, a left-hand locking nut, a left-hand thread slide block, a connecting screw and a semi-cylindrical block. The three branch measuring units with 120-degree included angles make linear contact with the inner wall of the thin-walled cylindrical part, and by measuring the magnitudes of force in three directions, the problem that due to the too large clamping force, a thin-walled cylindrical part excessively deforms is solved. The measuring device is accurate in measurement, can measure the clamping force of the thin-walled cylindrical part, and is suitable for preventing the part from excessive deformation caused by the too large clamping force in the precise part clamping process, and increasing the part accuracy and material utilization rate.

Piezoelectric type thin-walled cylindrical part clamping force measuring device

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Piezoelectric type three jaw chuck clamping force measurement device

Piezoelectric type thin-walled cylindrical part clamping force measuring device