A clamp for use with a cutting machine, the clamp comprising: a clamp frame; a low profile clamp head operatively connected to the clamp frame, wherein the clamp head has a clamping surface for pressing on a work surface of a work piece to hold said work piece; and a fixing element, operatively connectable to the clamp frame, for providing a clamping force to the clamp head by fixing the clamp to a support base for the work piece. In embodiments, the clamp head may have a low profile clamp head, made of plastic to prevent damage to a cutting bit.

A positioning structure of clamp may include a fixed clamp and a guiding rod, and the fixed clamp has a clamping portion and a connecting portion respectively at an upper portion and a lower portion thereof, and a guiding hole penetrates through the connecting portion. The guiding rod coupled into the guiding hole comprises a plurality of first through holes thereon, a first engaging hole and a second engaging hole respectively penetrating through two lateral sides of the connecting portion are respectively communicated with the guiding hole. A plurality of lock holes are formed at the lateral side of the connecting portion same as the second engaging hole. A positioning unit, connected to the connecting portion through the first engaging hole, the second engaging hole, and the lock holes, comprises a clamping block, an engaging block, a positioning bolt, a positioning block, a clamping plate and a rotating member.

A removing apparatus includes a main body, an operation member, and two connection members. The main body has a main arm, and a first and second side arms on two ends, so as to form a C shape, with a combination bore on one end of one side arm away from the main arm. The operation member is on another side arm and axially movable, with another combination bore on one end of the operation member. Each connection member has a base portion, with an insertion portion extending from the one lateral side of the base portion to be combined with the combination bore. Each connection member has a large and a small column portions connected in a stage shape to form a stage face. Sleeves of different sizes can be combined with the lateral side or the stage face of the connection member for removing objects.

A ratchet woodworking clamp with a universal adaptive clamping block includes a fixed clamp arm and a movable clamp arm, the fixed clamp arm and the movable clamp arm being both provided with an arc-shaped notch, and the arc-shaped notch being matched and connected with a movable connecting member, wherein a middle portion of the arc-shaped notch is provided with a semi-spherical or spherical groove recessed inwardly, one side of the movable connecting member is a circular connecting end, which is in matched connection with the arc-shaped notch, and the circular connecting end is provided with a spherical or semi-spherical convex structure in an inward direction, which is matched and connected with the groove in the middle portion of the arc-shaped notch.

A clamp includes a closure mechanism and a band. The clamp can be a v-insert clamp. The band has a first metal layer and a second metal layer. The metal layers constitute a bi-metallic construction of the band. The metal layers can be composed of different stainless steel materials. The first metal layer possesses a first coefficient of thermal expansion, and the second metal layer possesses a second coefficient of thermal expansion. Values of the first coefficient of thermal expansion and of the second coefficient of thermal expansion differ relative to each other. The difference in value of the first and second coefficients of thermal expansion, and the position of the first and second metal layers relative to each other, can be effected in order to impart desired behavior of the band when experiencing a change in temperature.

A method for clamping a workpiece that is first provided with depressions, wherein these depressions are, arranged in one row or a field having a grid distance of 3 mm. The grid distance is thereby the center distance of the depressions, the depth of which is preferably less than the length of the depressions measured in direction of the row of the depressions. The distances between the depressions preferably correspond approximately to the length of the depressions. The grid distance of 2.5 mm to 3 mm has proven to be an optimum for a wide range of usable workpieces and materials.

A clamping device includes a cylinder, a base body, a movable plate, and holding pins. The movable plate is attached to the base body substantially parallel thereto via two pairs of link arms. The movable plate moves along the operating direction of the cylinder. The movable plate can abut against a width-direction side surface of a workpiece. The holding pins are attached to the movable plate. The holding pins abut against an upper portion of the workpiece.

A carrying device is provided. The carrying device includes a stand, an upper clamp connected to the stand, a lower clamp assembled to the stand, a manipulation mechanism assembled to the stand and interlinked with the lower clamp, and a supporting column assembled to the lower clamp. The manipulation mechanism can drive the lower clamp to move relative to the upper clamp, and the upper clamp and the lower clamp jointly define a receiving space therebetween. The supporting column is movable relative to the lower clamp, so that the carrying device can be adjusted in a first clamping mode or a second clamping mode. When the carrying device is in the first clamping mode, the supporting column is located in the receiving space and faces toward the upper clamp, so that the supporting column and the upper clamp can jointly clamp a plate part of a first structure.

An opening/closing mechanism of a cover member that can easily push down the cover member by the lever member even if the force from the base member side to the cover member is increased, improving the operability of the lever member. A solution is that the lever member 17 is rotatably supported to the base member 23 by the first shaft 31, the link plate 29 is mounted to the lever member 17 by the second shaft 32, the cover member 15 is mounted to the link plate 29 by the third shaft 33, and the link plate 29 is rotated around the axis of the first shaft 31 in the direction in which the lever member 17 closes, so that the link plate 29 moves through the second shaft 32, and the link plate 29 moves, so that the cover member 15 is depressed through the third shaft 33.

A clamping device includes first and second clamping components and at least one elastic component. The first clamping component includes a first clamping portion and two first pivot portions connected to the first clamping portion. The second clamping component includes a second clamping portion and two second pivot portions connected to the second clamping portion. The second pivot portions are pivotally connected to the first pivot portions respectively, such that the first and second clamping components are capable of rotating relative to each other to present a first state and a second state. The elastic component is connected to the first clamping component and the second clamping component. When the first and second clamping components are in the second state, the elastic component provides an elastic force for the first clamping portion and the second clamping portion to be restored to the first state to clamp an object.