A clamp device is equipped with a clamp body, a piston rod, a link mechanism, a detection mechanism for detecting a state of rotary motion of a clamp arm, and a determination unit for determining whether a state of clamping exists. The detection mechanism includes a first proximity sensor, and a knuckle joint having a first sloped surface. The determination unit, on the basis of a comparison of an output signal from the first proximity sensor to a clamp threshold value, determines whether a state of clamping exists, and on the basis of a comparison to a clamping force generation threshold value, determines whether a state of generation of clamping force exists.

Query unit for determining the status of moving or movable parts of a system part, particularly for determining the end positions of a clamping arm of a toggle lever clamping apparatus, has a sensor unit and an electroblock. The sensor unit has at least one sensor and a connector plug-in connection part for connecting the sensor unit with the electroblock and can be attached to the system part. The electroblock has at least one electrical connector element for connecting an outer, releasable connection cable, a connector plug-in connection part for connecting the electroblock with the sensor unit, and at least one screw passage opening for installation on an outer surface of the system part. The connector plug-in connection part of the sensor unit is connected in an opening of the system part, with shape fit.

A toggle clamping device for building vehicle bodies has a clamping head and a cylinder, which adjoins the cylinder-side end of the clamping head in axial extension and the piston rod of which passes axially through the cylinder and a cavity of the clamping head, a toggle clamping arrangement being fastened to the free end of the piston rod, the toggle clamping arrangement being coupled to a clamping arm, and an opening being provided in the housing, and a cavity being provided therein for the mounting of a detection device for detecting the end positions of the clamping head, and wherein the detection device is formed as an exchangeable part, a cassette. For simple exchange of the cassette, the detection device is made up of a retainer and at least one sensor carrier, and the retainer is connected to the at least one sensor carrier such that the retainer can pivot about a pivot axis, the pivot axis being oriented transversely to the direction of the piston rod.

A clamping device with a housing, with a piston with piston rod running in the housing, and with a monitoring unit arranged at least partially in the housing, wherein the monitoring unit includes at least two sensor units. The sensor units are spaced apart from one another along a longitudinal axis of the piston rod, and are arranged at a distance from the piston rod. The piston and the piston rod, and a metallic signal transmitter arranged on the piston or on the piston rod, are movable in a positively driven manner between a first end position and a second end position. The first sensor unit is arranged at the first end position of the signal transmitter, and the second sensor unit is arranged at the second end position of the signal transmitter. Each sensor unit has a first and second sensor and includes an induction coil and an oscillator.

The toggle lever clamp has a clamp housing coupled with a cylinder assembly. A piston assembly is movable within the cylinder assembly. A rod is coupled with the piston assembly. The rod extends into a cavity within the clamp housing. A toggle lever assembly is coupled at one end of the rod inside of the clamp housing. A sensor assembly is coupled with the clamp housing. The sensor assembly includes a pair of sensors or switches spaced from each other and positioned on a mounting plate. The mounting plate is slidably secured within the clamp housing. A sensor pickup is movably positioned on the rod so that the sensor pickup is multi-positionable on the rod to adjust the stroke of the toggle lever assembly.

Provided is an electric clamping device including a main body; a drive motor for providing a driving force; a driving force transfer portion for converting and transferring a magnitude of a driving force of the drive motor; a sliding crank having one side connected to the driving force transfer portion and for converting a rotational motion of the driving force transfer portion to a reciprocating motion; a toggle link having one side connected to the other side of the sliding crank and including an elastically deformable link; and a clamp having one side connected to the toggle link and having the other side for clamping or unclamping an object. Various other embodiments are available.

An electrical clamping apparatus is provided that can reduce an entire size using a motor as a driving source and largely improve a grip torque by applying a sliding crank portion and a changed toggle link portion with a driving force transfer mechanism. The electrical clamping apparatus for clamping and fixing one side of a panel includes a main body; a driving motor installed within the main body and that generates a driving force; a clamp portion that clamps or unclamps the panel; a toggle link portion connected to the clamp portion and that transfers rotatory power to the clamp portion to rotate the clamp portion; a driving force transfer portion connected to the driving motor to transfer a driving force of the driving motor to the toggle link portion; and a sliding crank portion connected to one side of the toggle link portion to convert a rotational motion of the driving force transfer portion to a linear reciprocating motion and to operate the toggle link portion in a state in which one side thereof is connected to the driving force transfer portion and in which the other side thereof is vertically bent toward the toggle link portion.

A clamp apparatus is equipped with first and second clamp arms supported rotatably with respect to a body, and a drive unit having a pair of first and second pistons displaced under the supply of a pressure fluid. A driving force of the drive unit is transmitted to the first and second clamp arms through knuckle joints, which are connected to first and second piston rods, power-boost levers, and link arms. The power-boost levers are formed such that the length from a support pin toward the knuckle joint is longer than the length from the support pin toward the link arm.

A remote jig control system may comprise a jig configured to place a car body to a particular position, a wireless magnetic sensor installed in the jig, a control panel wirelessly connected with the wireless magnetic sensor via first wireless communication to receive state information about the jig from the wireless magnetic sensor, a gateway connected with the control panel via the first wireless communication to receive the state information, a user terminal connected with the gateway via second wireless communication to receive the state information; and monitoring server configured to receive the state information from the gateway and store the state information, wherein the control panel is configured to be controlled through the user terminal to generate a jig control signal corresponding to the state information.

An actuation unit includes an actuating arm pivotable between an open and closed position; a pneumatic cylinder comprising a stem movable linearly along a cylinder axis and configured to control pivoting of the actuating arm; and a closing device that includes a braking unit configured to brake movement of the actuating arm having a surface portion configured to come into contact with at least one braking assembly. The braking assembly is locked against rotation and axially movable between a non-braking and braking configuration. The surface portion is in a non-orthogonal arrangement with respect to the cylinder axis and the braking assembly includes a plurality of rollers retained in the braking assembly with clearance at least with respect to a radial movement thereof, the rollers being able to assume a first radial configuration not in contact with the surface portion and a second radial configuration in contact with the surface portion.