10 results about "Wedge angle" patented technology

The invention relates to the technical field of circular saw blades, in particular to a bamboo cross section cutter for cutting a wedge angle of a face, which comprises a cutter head, a plurality of tooth holders are arranged around the edge of the cutter head, each tooth holder is connected with cutter teeth, all the cutter teeth comprise a plurality of tooth groups, each tooth group comprises at least one first helical tooth, and each first helical tooth is provided with at least one second helical tooth. The cutter head further comprises at least one second helical tooth, the cutting face of the first helical tooth is inclined relative to the axis of the cutter head, and the cutting face of the second helical tooth and the cutting face of the first helical tooth form a splayed shape or an inverted splayed shape. By arranging the first oblique teeth and the second oblique teeth, the cutting faces of the first oblique teeth and the second oblique teeth incline towards the two sides of the cutter head correspondingly, on the basis that a complete fracture is formed, the contact face with bamboo wood can be reduced, the sharp cutting effect can be achieved, cuttings can be rapidly discharged through the obliquely-arranged cutting faces, and the cutting efficiency is improved. And burrs of bamboo fractures are reduced.

The invention relates to a locking mechanism of a tilting wing and a using method of the locking mechanism, and belongs to the technical field of low-altitude economical and electric tilting wing vertical take-off and landing aircrafts, the locking mechanism comprises a first locking unit and a second locking unit, each locking unit is arranged on the top edge strip and the bottom edge strip of a wing spar, and the locking units are arranged on the top edge strip and the bottom edge strip respectively. Each locking unit is provided with a corresponding groove mechanism and a corresponding wedge block mechanism on the tilting section spar and the fixed section spar, the wedge angle between a wedge block and a clamping groove face is 5 degrees, clamping grooves are matched for one-way pressing, a gap is eliminated, the wedge block gradually presses a wave washer in the process that a push rod stretches out, and the wedge block and the wedge block are matched for one-way pressing. The wave gasket provides elastic force for the wedge-shaped block after being pressed and deformed so as to eliminate gaps caused by vibration, abrasion, deformation and the like, the actuating direction of the push rod is perpendicular to the pressing direction of the wave gasket, and the situation that too large pressing force is needed due to the fact that the push rod directly presses the wave gasket is avoided. The wing spar web and the edge strip are connected through the rivets, so that load transmission is achieved.

Floating clamp for clamping a workpiece in a processing machine with a first wedge bar (52, 104, 204) and a second wedge bar (62, 106, 206), and a piston (70, 130, 230, 342) which is designed to exert a pushing movement in the pushing direction (20, 80, 140, 240) for clamping the workpiece, wherein the first wedge bar (52, 104, 204) is movably received in a first recess in a first support bolt (110, 210) and the second wedge bar (62, 108, 208) is movably received in a second recess in a second support bolt (112, 212), the first wedge rod (52, 104, 204) and the first recess are directed at a first wedge angle to the thrust direction (20, 80, 140, 240) which is greater than 0°, and the second wedge rod (62, 108, 208) and the second recess are directed at a second wedge angle to the thrust direction (20, 80, 140, 240) which is greater than 0°, a first clamping means (120, 220) is assigned to the first support bolt (110, 210) and a second clamping means (122, 222) is assigned to the second support bolt (112, 212), and the first wedge rod (52, 104, 204) and the second wedge rod (62, 108, 208) are connected to the piston (70, 130, 230, 342) via a rotatably mounted cross connection (72).

The invention relates to the technical field of assembling and positioning tools, and discloses a tool for heavy precise part splicing and a using method.The tool comprises a height-adjustable spring pressing assembly and a wedge block pushing mechanism, the height-adjustable spring pressing assembly comprises a threaded stand column, an adjusting circular ring in threaded fit with the threaded stand column, a pressing circular ring and a compression spring, the initial height position of the pressing circular ring can be adjusted in the axial direction through the adjusting circular ring, splicing pieces with different loads can be flattened and form stable contact, and the compression spring bears the main load so as to improve the buffering and compliance capacity. The wedge block propelling mechanism comprises a first wedge block, a second wedge block, a third wedge block and a fourth wedge block which are stacked from top to bottom, the first wedge block, the second wedge block and the third wedge block are movable wedge blocks, and the fourth wedge block is a fixed wedge block; the wedge block propelling mechanism achieves axial propelling through thread driving and thrust bearing supporting and drives the height-adjustable spring pressing assembly to move downwards as a whole through relative sliding of wedge faces, so that a release space is provided after positioning is completed, and the performance after splicing is conveniently verified. And meanwhile, the wedge angle meets the self-locking condition so as to restrain reverse sliding.

A bird-cutting load measurement device and method based on a Hopkinson bar, wherein the end of the Hopkinson bar adjacent to the air cannon muzzle is a wedge-shaped end. The leading edge of the wedge-shaped end is in the vertical direction. There are projectile-facing surfaces on the wedge surfaces of the wedge-shaped end. The leading edge of the wedge-shaped end is also the leading edge of each projectile-facing surface, and the trailing edge of each projectile-facing surface is a C-shaped curve formed by the edge of the wedge surface of the wedge end. The present invention solves the problem in existing engine fan blade bird strike research that the bird-cutting load history cannot be accurately measured due to the coupling of the dynamic deformation of the bird body and the deformation of the blade, and provides basic data for the study of the engine fan blade bird-cutting problem and especially the study of the bird body constitutive model and parameter optimization. The present invention simplifies the engine bird strike conditions of different heading speeds, blade rotation speeds, and blade leading edge angles into the basic problem of quasi-rigid target plate bird-cutting with different half-wedge angles θ, and measures the load history of the accurate bird-cutting process decoupled from the target plate deformation, which is conducive to obtaining a universal response law.

clamping system (1), comprising at least three wedge-shaped clamping elements (2) arranged in a common plane, called the arrangement plane, wherein each of the clamping elements (2) has a clamping side (3) and a contact side (4) and each of the clamping elements (2) is in contact on its clamping side (3) with the contact side (4) of exactly one other of the clamping elements (2), wherein for each clamping element (2), a first beam, which lies in a plane parallel to the arrangement plane and on which the clamping side (3) runs, and a second beam, which lies in the plane parallel to the arrangement plane and on which the contact side (4) runs, enclose a wedge angle, wherein the clamping elements (2) are arranged such that sections of all clamping sides (3) in which they are not in contact with a contact side (4) together form a continuous clamping surface, further comprising a rotatable rotation element (7) and a transmission mechanism, wherein the transmission mechanism is arranged to transmit a rotational movement of the rotation element (7) relative to the clamping elements (2) into movements of the clamping elements (2), where the vertices (8) of the wedge angles form the corner points of a convex polygon (9).

The utility model provides a mold device for improving the prefabrication precision of a bare concrete hanging plate, which belongs to the technical field of prefabricated plate molds and comprises a bottom plate, an angle steel group, a double-sided PE (polyethylene) adhesive tape and a wedge opening angle bead. According to the utility model, the wedge opening angle bead structure is designed, so that the wedge opening angle bead structure can be conveniently fixed on the inner side of an angle steel group by adopting screws, and the position displacement of the wedge opening angle bead can be effectively avoided during batch production; the double-faced PE adhesive tape is arranged between the angle steel set and the bottom plate, cement grout loss is avoided, the wedge opening size is complete after mold removal, forming is attractive, the precision of a prefabricated finished product is effectively improved, and the quality repair risk is reduced.

The utility model discloses a poly V-belt with high stability. The poly V-belt comprises a flat belt and a plurality of parallel wedges arranged on the inner side of the flat belt, the wedges comprise a high wedge and a low wedge, and the high wedge and the low wedge are both trapezoidal; the wedges located on the edges of the two sides of the flat belt are high wedges, and one or more low wedges are arranged between the two high wedges. The height of the high wedge is larger than that of the low wedge, the wedge width of the high wedge is the same as that of the low wedge, and the wedge angle of the high wedge is the same as the wheel groove angle of the matched multi-wedge belt wheel. The wedge angle of the low wedge is smaller than that of the high wedge; the wedge top of the low wedge is provided with grooves, and the grooves are formed in the low wedge in pairs and symmetrically distributed relative to the center line of the low wedge. By arranging the high wedge and the low wedge which work cooperatively, the high wedge and the low wedge can be attached to the multi-wedge belt wheel more stably, the problems that the belt body swings left and right and slips after being stained with water and oil are solved, and therefore power transmission can be guaranteed.

The application discloses a quick-locking device, including a main housing, a retainer, a retainer, and balls. Both the retainer and the retainer are located within the inner cavity of the main housing. The retainer is connected to the main housing. The retainer has a spindle mounting channel at its center to accommodate the spindle, and ball mounting holes on its outer periphery. The ball mounting holes communicate with the spindle mounting channel, and the balls are fitted into the ball mounting holes. The spindle is located inside the balls, and the retainer is outside. The retainer has radial and axial locking wedges that limit the movement of the balls. The device locks when the balls are pressed against the retainer, and unlocks when the balls disengage from the retainer. The retainer, with its radial and axial locking wedges, works in conjunction with the balls to simultaneously lock and unlock the spindle radially and axially. This invention is simple to use, allows for quick locking and unlocking, is easy to disassemble, facilitates the locking and replacement of the locked components, and improves efficiency.