6 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.

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.

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.