136results about How to "Guaranteed pressing force" patented technology

The invention provides a high-accuracy hole forming device for an aircraft wall panel and a method of the high-accuracy hole forming device. A main shaft module is used for feeding an electric main shaft along a hole forming axis; a feeding module is used for guaranteeing movement of the main shaft module and a pressure pin normal leveling module in the hole forming axis and providing pressure for a pressure pin to be abutted against the wall panel; the pressure pin normal leveling module is used for guaranteeing the stability of the wall panel in the hole forming process; the feeding module is matched with a grating scale module for work to realize accurate control over the hole forming feeding displacement; a visual alignment module and a control system form a closed loop feedback loop; positional deviation error of a projection point of a hole forming main shaft on the wall panel surface and an actual hole forming point can be measured and fed back in real time; and correction is performed through the closed loop system to guarantee that the positional accuracy of a formed hole is within a tolerance requirement range. According to the high-accuracy hole forming device, the positional accuracy, the surface roughness and the dimensional accuracy of the hole can meet the design requirements well; and meanwhile, slanting holes and oblique holes are not formed in the hole forming process, the temperature of a hole forming region is kept at a normal working temperature and the chip removal is normal.

The invention provides a novel integral turning method of blades, which can effectively solve the problem of insufficient pressing force of the blades during the assembly machining of the blades in the past and also overcome the defect of insufficient rigidity caused by interrupted cutting. The novel integral turning method of the blades is simple and can greatly enhance machining efficiency. The novel integral turning method of the blades is characterized by comprising the following steps of: positioning the blades by simulating an assembling state, and pressing the positioned blades on a turning jig by using a press plate; then pouring a low-melting-point alloy between the blades and the turning jig; disassembling the press plate after the low-melting-point alloy is cooled and solidified; firmly bonding the blades and the turning jig depending on the low-melting-point alloy so that an integral rigid part is formed by the blades and the turning jig, and then carrying out assembly machining on the blades; and after the blades are subjected to the assembly machining, placing the blades and the turning jig into hot water so that the blades and the turning jig are separated because the solid low-melting-point alloy is melted when heated, and therefore the assembly machining of the blades is completed.

The invention provides a saw plate positioning device for a gang saw welder, which belongs to the technical field of machinery and solves the problem that two sides of a clamping block in the conventional gang saw welder have no positioning devices, so a saw plate is easy to deform when the heated hardness is reduced, the motion is instable during moving the saw plate and the precision of a next welding point is reduced. The saw plate positioning device for the gang saw welder comprises a first clamping block and a second clamping block; the first clamping block is fixed on a rack; the second clamping block is arranged on the rack through an air cylinder, and the propped faces of the second clamping block and the rack are arranged opposite; the positioning device also comprises a first guide piece; and an elastic mechanism, which enables the first guide piece to move in the direction of the guide face of the first guide piece close to the propped face of the second clamping block when the first clamping block and the second clamping block are loosened from the saw plate, is arranged on the rack. The saw plate positioning device for the gang saw welder can ensure the accuracy of welding saw teeth, avoid deformation and improve the production efficiency, and has the advantage of stable performance.

The invention relates to an investment cast shell crushing, grading and screening system comprising a vibration cleaning and shakeout mechanism, a grinding and crushing mechanism, a gear pair rolling mechanism and a grading and screening mechanism which are connected through a conveyer belt. When mould sand is cleared, an investment cast is arranged on the vibration cleaning and shakeout mechanism; the mould sand outside the cast is vibrated to a shakeout collection hopper, conveyed into the grinding and crushing mechanism and the gear pair rolling mechanism, so that large caked mould sand can be crushed; and the mould sand is conveyed to the grading and screening mechanism to be graded and collected according to the sizes of the mould sand particles after being crushed. According to the mould sand grading and screening system in the structure, an assembly line which carries out sand cleaning, shakeout, crushing and screening processes on the investment cast automatically, no manual operation is needed, so that the mechanical automation degree is high, the working efficiency and the reuse rate are greatly improved, the labor intensity of a worker is reduced, dust is not scattered, and green manufacturing, environmental protection and sustainable development are realized.

The invention relates to an intelligent automatic cable conveyor. A position sensor group for detecting a position of a cable is arranged at the inlet of a cable conveying channel, so that a caterpillar band is driven automatically to move through a conveying motor when the position sensor group senses the cable. A left bracket and a right bracket are driven by a lead screw electric driving mechanism to move synchronously oppositely or reversely, so as to clamp the cable placed in the cable conveying channel automatically. A pressing force detecting device for detecting a pressing force of thecable is arranged in the right bracket. The intelligent automatic cable conveyor can achieve automatic clamping of the cable, adjustable speed and automatic conveying and form closed-loop control, sothat the pressing force of the cable is adjusted automatically according to a set threshold value. Meanwhile, the conveyor can be adjusted in speed according to the field construction situation, so that the labor intensity and the cost of constructors are reduced greatly, and the intelligent automatic cable conveyor has the advantages of high cable paving quality and high efficiency.

The invention belongs to the field of film roll rolling devices and particularly relates to an edge locking clamp for rolling of film rollers. The edge locking clamp comprises upper roller wheels and lower roller wheels which form clamping rollers, and the matched clamping gaps of the upper roller wheels and the lower roller wheels form a gap for moving of a clamped thin film. The roller faces, in contact with the clamped thin film, on the upper roller wheels and/or the lower roller wheels are provided with conical faces. The axes of the conical faces are coaxial with the axes of the corresponding roller wheels of the conical faces, and the small ends of the conical faces point to the direction in which the clamped thin film is to be stretched and are arranged in the direction in which the clamped film is to be stretched. Each clamping roller formed through matching of the corresponding upper roller wheel and the corresponding lower roller wheel forms a set, at least two sets of the clamping rollers are arranged at the two sides of the clamped thin film respectively. According to the edge locking clamp, the clamping rollers with the conical faces are additionally arranged, so that the function of edge stabilizing and the function of edge locking in the moving process of the thin film are achieved by depending on the clamping and stretching force on the side edge of the thin film by the conical faces on the clamping rollers, the thin film is stretched tightly, flatness of stretching in the moving process of the thin film is finally ensured, and the edge deviation and corrugation phenomena of the thin film in the rolling process are improved and even avoided.

The invention relates to a horizontal solid wood board slicing sawing machine, which comprises a stand, a hood, a dust collection device, a pipeline, conveying devices and a cutting device, wherein the hood is fixedly arranged at the upper end of the middle part of the stand; the conveying devices are transversely and coaxially arranged on the inner upper part of the stand; the cutting device is arranged on the hood and the stand between the conveying devices, is connected with a driving device, and is structured in a way that a plurality of blades are fixedly arranged in a cutter frame at an equal interval; a plurality of pressure rollers are arranged at intervals in the hood on the two sides of the cutting device; a dust hood is arranged at the top of the hood above the cutting device; the dust collection device is connected to and arranged at the upper end of the dust hood; the pipeline is connected to the dust collection device. The horizontal solid wood board slicing sawing machine is simple in structure, scientific in design, uniform in pressure and high in machining efficiency and machining accuracy, the smoothness of a product is improved, the labor intensity of a worker is effectively reduced, and the production efficiency is improved.

The invention discloses a manual pressing device based on worms, worm wheels and crank connecting rod transmissions. The manual pressing device comprises a rotary shaft, wherein at least two worms are fixedly arranged on the rotary shaft, the worm wheels meshed with the worms are arranged under the corresponding worms, the crank connecting rod transmissions are arranged on the worm wheels, and the tail ends of the crank connecting rod transmissions are connected to the same press block. The symmetrical synchronous multi-point driving is achieved, the manual pressing device is compact in structure, simple and convenient to use and rapid in positioning and pressing, the synchronous multi-point or multi-station pressing can be achieved according to the demands of workpieces, and accordingly labor productivity and product quality are improved.

The invention discloses a sealing plugging cover for an aeroengine test lead. The side surface of a base is provided with a threaded hole and a light hole; the center of the base is provided with a sliding groove, and the bottom is provided with a mounting groove; the main body contour shapes of a cover plate and a sealing pad are the same as that of the base; the cover plate is provided with thesame threaded hole and the same light hole as the base; the sealing pad is a through hole without thread; one end of the cover plate is provided with a mounting edge, and the mounting edge is providedwith a through hole without thread; one end of a spring is clamped on an adjusting piece and one end ejects in the base mounting groove; the cover plate and the base are fixed together through a screw a to form a sealing plugging cover; one sealing pad and the sealing plugging cover are mounted on the engine through a screw b, test leads are combed, the other sealing pad and the sealing pluggingcover are mounted on the engine through a screw b, and the two sealing plugging covers are fixedly connected through a screw c; and a cavity is formed after the two sealing plugging covers are connected, and the spring drives the adjusting piece to adjust the cavity to a minimum bundling state, an intermediate bundling state and a maximum bundling state.

The invention relates to a pressing force adjustment device for flow distribution pairs. The pressing force adjustment device comprises a plunger tray, a flow distribution plate and a bearing device, and further comprises a pressing force adjustment assembly. The pressing force adjustment assembly is arranged on the flow distribution plate or the bearing device. Through the pressing force adjustment assembly installed in an installation hole, high-pressure oil can be led into the space between the plunger tray with relative rotation and the flow distribution plate or led into the space between the flow distribution plate and the bearing device; through leading-in of the high-pressure oil, a part of friction force of the flow distribution pairs can be counteracted, thus it can be guaranteed that on the premise of an appropriate redundant pressing force coefficient, friction force between the flow distribution plate and the plunger tray or friction force between the flow distribution plate and the bearing device is reduced, and occurrence of a plate burning phenomenon is avoided; meanwhile, leakage quantity increase caused by an excessive gap between the flow distribution pairs cannot happen, and volumetric efficiency is guaranteed.

The invention discloses a cranked plate hole-boring clamp. The cranked plate hole-boring clamp comprises a base, a first threaded rod, a second threaded rod, a floating self-positioning device and twofloating pressing devices. The base is provided with a first workpiece supporting surface and a second workpiece supporting surface, and the height of the second workpiece supporting surface is lessthan that of the first workpiece supporting surface. Each floating pressing device comprises a floating pressing plate and a pressing cushion block. The two sides of the lower end surface of each floating pressing plate are provided with pressing plate supporting parts correspondingly. The upper end faces of the floating pressing plates are provided with arc surface protrusions. The lower end faces of the pressing cushion blocks are provided with positioning grooves matched with the arc surface protrusions. The lower end of the first threaded rod sequentially penetrates through a locking nut,the corresponding pressing cushion block and the corresponding floating pressing plate and then is connected to the first workpiece supporting surface. The lower end of the second threaded rod sequentially penetrates through a locking nut, the corresponding pressing cushion block and the corresponding floating pressing plate and then is connected to the second workpiece supporting surface. The cranked plate hole-boring clam can clamp two to-be-machined workpieces at a time, and the machining precision of the workpieces can be improved.

The invention discloses an inclined arrangement mini pile structure. The inclined arrangement mini pile structure is used for fixing a landslide mass on a base rock. The inclined arrangement mini pile structure comprises at least one group of mini pile assembly which penetrates through the landslide mass to be fixedly connected with the base rock. Each group of mini pile assembly comprises at least three mini piles and a top plate which is arranged on the surface of the landslide mass and used for connecting the mini piles into a whole. The mini piles include the first mini piles, the second mini piles and the third mini piles. The second mini piles are perpendicular to the surface of the landslide mass. The first mini piles are arranged in an inclined mode in a direction facing the exerting direction of thrust of the landslide mass. The third mini piles are arranged in an inclined mode in the exerting direction of the thrust of the landslide mass. Lubricating interlayers are disposed between parts, located in the landslide mass, of the first mini piles and the landslide mass. By means of the inclined arrangement mini pile structure, the effect that the inclined piles towards the thrust of the landslide mass always have pre-tightening force can be ensured, and the whole mini pile structure is better in slope fixing effect.

The invention provides a temperature-compensated deep-cold laser impact experimental fixture. The temperature-compensated deep-cold laser impact experimental fixture comprises a spring and sliding block compression piece and a camping piece, wherein the spring and sliding block compression piece comprises two identical spring and sliding block units, each spring and sliding block unit comprises anouter sliding block, a spring and an inner sliding block, each spring is connected with the corresponding outer sliding block and the corresponding inner sliding block, and each outer sliding block and each inner sliding block can slide along the straight line; and the clamping piece is used for clamping the two outer sliding blocks from the outer side surfaces of the two outer sliding blocks, the two spring and sliding block compression pieces are located on the same straight line and symmetrically distributed, and under the action of the clamping piece, the two inner sliding blocks can clamp a sample workpiece from the two ends of the sample workpiece. The temperature-compensated deep-cold laser impact experimental fixture can actively compensate for the plastic shrinkage of the samplein the deep-cold environment in real time, and the clamping force of the fixture to the sample in the reinforcement process is ensured all the time.