A support for a mitre joint uses two wedging mechanisms disposed at a characteristic angle. Each wedging mechanism is arranged to locate inside a hollow rail, such as within an extruded hollow beam. The wedging mechanism can be operated from outside the joint in order to clamp the mechanism in position. The mechanism has a self centering capability to assist in accurately locating the rails relative to each other.

An angle fixing fixture relates to the field of tooling fixtures and includes: a right-angled triangle shaped positioning block and clamping claws. Each the clamping claw is provided with a clamper, and a position of the clamper on the clamping claw is adjustable. Each the clamping claw is detachably connected to the positioning block. The clamper is located outside the positioning block, and a certain distance is left between the clamper and the positioning block. An end surface of an end of the clamper close to the positioning block is parallel to one of outer side surfaces of the positioning block. The number of the clamping claws is at least two. The angle fixing fixture can meet the need of 90 degrees connection of two plates as well as the needs of other angle connections, and has a simple structure and is easy to use.

A clamping system useful in miter edge fabrication. Two separate units, each including a vacuum plate may be placed on'separate slabs. The units are connected with a knuckle that can be rotated to provide connection of the slabs in a variety of angles. The units are vacuum sealed to the slabs via pressure tubes. The vacuum plates may include various sections of varied sizes to connect to different sized slabs. When the knuckle is locked, a worm gear will provide for lateral movement, relative the knuckle, to provide precision fitting of slabs.

Right angle clamping pliers include a four-bar linkage clamping mechanism coupled to opposing pairs of clamping arms. Any of a variety of detachable clamping members can be attached to each clamping arm. Some clamping members orient the parts being joined. For example, right angle clamping members orient edges and curved C-shaped clamping members orient tubes, pipes and other cylindrical parts. Different types of clamping members can be used in a single configuration to accommodate a wide variety of parts to be joined.

The invention relates to a clamping device for a workpiece, comprising a lower clamping element and an upper clamping element which form a workpiece holder.

The present invention provides an improved release mechanism for clamping tools where problems of thread slipping due to worn out thread can be reduced by the structure of a plunger with a small diameter section and the engagement of the thread shaft is made more secure by the cam action on account of the shape of the plunger.

A clamping device is used for joining panels or boards with highly cosmetic appearance at the visible joined surface. The clamping device can include mechanisms to support and move one panel relative to another panel in two directions perpendicular to the beveled edges of the panels. The clamping device can include a rotational mechanism to rotate one panel around a direction parallel to the beveled edge.

A clamping system useful in miter edge fabrication. Two separate units, each including a vacuum plate may be placed on'separate slabs. The units are connected with a knuckle that can be rotated to provide connection of the slabs in a variety of angles. The units are vacuum sealed to the slabs via pressure tubes. The vacuum plates may include various sections of varied sizes to connect to different sized slabs. When the knuckle is locked, a worm gear will provide for lateral movement, relative the knuckle, to provide precision fitting of slabs.

A clamping device is used for joining panels or boards with highly cosmetic appearance at the visible joined surface. The clamping device can include mechanisms to support and move one panel relative to another panel in two directions perpendicular to the beveled edges of the panels. The clamping device can include a rotational mechanism to rotate one panel around a direction parallel to the beveled edge.

An apparatus for assembling a panel, the apparatus including a main support, a press head and a movable stop, where the movable stop has at least two adjustable tensioning elements, a stop element and gripping mechanisms, each of the adjustable tensioning elements including a front end and a rear end, each admitting at least one opening position and one closing position, where the stop element is joined in an articulated way to the front ends of the adjustable tensioning elements, where the gripping mechanisms are joined to the rear ends of the adjustable tensioners, the gripping mechanisms admitting a first position in which the adjustable tensioning elements are configured in the opening position and a second position wherein the adjustable tensioning elements are configured in the closing position.