57 results about "Shear angle" patented technology

The invention discloses a method for predicting dynamic mechanical properties of a tough difficult-to-machine material based on milling. The method comprises the following steps: firstly, optimizing and solving a normal shear angle of an oblique angle cutting shear plane through an iterative method: (a) setting an initial value of the normal shear angle; (b) calculating an undeformed chip thickness, a cutter instantaneous invasion angle, a cutting force component and a normal friction angle based on the normal shear angle initial value; (c) updating a normal shear angle calculation value; (d) calculating the error between the initial value and the calculated value of the normal shear angle, if the error is not within the allowable range, repeating the steps (a)-(d) until the error is within the allowable range, and outputting the final calculated value as the optimized normal shear angle; then, parameters such as the optimized normal shear angle are substituted into a related equation containing fracture toughness, yield strength and viscous toughness to solve the fracture toughness Gc of a workpiece material at a tool nose in the milling process, the yield stress sigma Y in a shear plane and the viscous toughness Ga of chip slippage at a tool-chip contact interface.

The invention relates to a shearing performance testing jig and device.The shearing performance testing jig comprises at least one jig body, the jig body comprises a connecting part and a plurality of sample fixing parts, and the ends, away from the connecting part, of the sample fixing parts are provided with shearing faces; the shearing surfaces of the two opposite sample fixing parts of the two jig bodies used in cooperation are parallel to each other, the test included angles corresponding to at least part of the sample fixing parts are different, and the test included angles are the included angles between the planes where the shearing surfaces are located and the first direction. According to the shearing performance testing jig, the plurality of sample fixing parts are arranged in the jig body, each two opposite sample fixing parts fix one shearing sample, and the included angles between the planes where the shearing surfaces of at least part of the sample fixing parts are located and the stretching direction are different, so that the shearing performance of the plurality of shearing samples can be tested at a plurality of shearing angles; the influence of other variables except the shearing angle on the test result is reduced or avoided, the test accuracy is improved, and the test efficiency is improved.

The utility model discloses an adjustable shear plate angle locking mechanism, which belongs to the technical field of shear plates and comprises a machine body, supports are fixedly mounted on the inner walls of two sides of a vertical section of the machine body, lower blades are fixedly mounted at the top ends of the two supports, and a discharge port is formed in the lower end of the outer wall of the vertical section of the machine body. And the support and the lower blade are both located at the upper end of the top end of the discharging opening, and a rotating plate is rotationally installed at the top end of the machine body. After the shearing angles of the rotating plate, the mounting seat and the upper blade are reached, the second driving motor works, so that the two I-shaped frames are far away from each other and extrude the inner walls of the upper end and the lower end of the limiting frame, the inclination angle of the upper blade is locked, and the inclination stability of the upper blade during shearing is ensured; and a plurality of locking blocks are arranged on the outer walls of the opposite ends of the two I-shaped frames of each set and the inner walls of the upper end and the lower end of the limiting frame, the two sets of locking blocks are connected in a clamped mode, the locking effect on the rotating plate after rotation is further enhanced, and then the inclination stability of the upper blade is guaranteed.

The invention discloses a method for calculating the shear bearing capacity of a Y-shaped perforated steel plate connecting piece embedded in UHPC (Ultra High Performance Concrete). When the shear bearing capacity of the Y-shaped perforated steel plate connecting piece is calculated, the Y-shaped perforated steel plate connecting piece is decomposed into four parts for contribution calculation: penetrating reinforcing steel bars, UHPC tenons in holes, UHPC pressure-bearing effects at the ends of steel plates and UHPC tenons between the steel plates in the same direction; when the shear bearing capacity provided by the penetrating steel bars is calculated, the influence of the shear area of the steel bars is considered; when the shear bearing capacity provided by the UHPC tenon in the hole is calculated, the influence of the UHPC shear strength and the shear angle of the steel bar is considered; when the shear bearing capacity provided by the UHPC pressure-bearing effect of the end part of the steel plate is calculated, the total pressure-bearing area influence of the end part is considered; when the shear bearing capacity provided by the UHPC tenons between the steel plates in the same direction is calculated, the influence of the width of the steel plates and the strength of the UHPC is considered; and finally, the contribution of the four parts is superposed and summed, and the shear capacity of the Y-shaped perforated steel plate connecting piece embedded in the UHPC is obtained. The method has high calculation precision, and the calculation process is simple, efficient and convenient.

The utility model relates to the technical field of plate shearing machines, and discloses a plate shearing machine with an adjustable shearing angle, which comprises a supporting seat and a shearing box arranged on the supporting seat, a first electric push rod is fixedly mounted on the inner top wall of the shearing box, and a lifting plate is fixedly mounted at the vertically downward telescopic end of the first electric push rod. A motor is fixedly mounted at the top of the lifting plate; when the inclination angle of the main plate shearing blade in the vertical direction needs to be adjusted, a worker can start the second electric push rod, and the second electric push rod can drive the mounting plate and the main plate shearing blade to obliquely move in the vertical direction under the cooperation of the fixing rod, so that the inclination shearing angle of the main plate shearing blade is adjusted; when the angle of the main plate shearing blade in the horizontal direction needs to be adjusted, a worker can start the motor, and the motor can control the mounting plate and the main plate shearing blade to rotate horizontally, so that the shearing angle of the main plate shearing blade in the horizontal direction is adjusted.

The utility model provides a quick extrusion type flaring-free pipe sleeve, which relates to the technical field of aviation hydraulic pipeline sealing joints, and comprises an outer contour and an inner contour, the outer contour is provided with a first arc, and a first conical surface, a second conical surface and a third conical surface on two sides of the first arc; the first conical surface is tightly attached to the 24-degree conical surface under the action of the 24-degree conical surface rigid body, and a sealing area is formed. The rolling type flaring-free pipe sleeve has smaller size and lighter weight, can be connected with a guide pipe in a narrow space, and is reduced in weight by 14.5%-21.2% and shortened in length by 23.3%-27% compared with an existing rolling type flaring-free pipe sleeve; the first conical surface and the second conical surface are in elastic-plastic deformation under the action of a 24-degree conical surface rigid body, the outer surface of the first conical surface changes gently, the deformed outer surface is more attached to the 24-degree conical surface, and sealing connection higher in strength and better in stability is formed. The multiple annular grooves are provided with shear angles, so that the connecting strength and the fitting degree of the pipe sleeve and the guide pipe are improved, and oil leakage and oil seepage faults of a hydraulic pipeline are reduced.

The utility model belongs to the field of aircraft structure design, and particularly relates to a high-rigidity shear angle sheet structure which comprises a turned-over edge, a web plate, vertical ribs and edge strips. The flange, the vertical ribs and the edge strip define a whole ring structure, the web plate is integrally connected to one end of the whole ring structure, the flange is located on the outer side of the whole ring structure, the two sets of vertical ribs are symmetrically arranged on the two sides of the flange, and the edge strip is correspondingly arranged on the inner side of the whole ring structure; the outer walls of the vertical ribs are connected with the stringer, and the vertical ribs are arranged between the adjacent vertical ribs on the two sides of the stringer. The turnup, the web plate, the vertical rib, the edge strip and the supporting column are designed to be equal in height at the notch of the stringer, so that a thin neck structure is avoided. When the load is large, the phenomenon of stress concentration on the shearing angle piece is avoided. The rigidity of the wing rib at the position of the shearing angle piece is improved by changing the structural form among the traditional wing rib shearing angle piece, the edge strip and the supporting column, and then the structural strength requirement is met.

The invention discloses a method and a device for acquiring an interference shear amount and a shear angle, relates to the technical field of optical measurement, and aims to improve the universality of an existing interference shear amount and shear angle acquisition algorithm and improve the precision and the reliability of displacement acquisition. Comprising the following steps: fusing interferograms obtained by using a lateral shearing interferometer through a spatial modulation degree quality diagram to obtain a spatial modulation quality diagram, and obtaining a gamma transformation diagram according to gamma change of the spatial modulation quality diagram; obtaining edge information of the gamma transformation diagram through a canny operator and a fine Contours algorithm, determining a maximum contour curve of the edge information of the gamma transformation diagram, and cancelling according to the maximum contour to obtain a gamma transformation diagram mask; according to the gamma transformation diagram, the gamma transformation diagram mask and a GrabCut algorithm, obtaining an interference region segmentation diagram and a final segmentation label corresponding to the gamma transformation diagram; carrying out canny edge detection on the interference region segmentation image to obtain interference region edge information, segmenting the interference region edge information based on a minimum matrix fitting algorithm to obtain upper and lower edges or left and right edges, and carrying out circular fitting on the upper and lower edges or the left and right edges according to a constrained least square method to obtain a circular fitting image; and determining the center point position, the shearing amount and the shearing angle.

The invention relates to the technical field of metal processing machinery, in particular to a numerical control gantry cut-off machine capable of changing the cutting angle, which comprises a main oil cylinder and an auxiliary oil cylinder which are mounted in the middle of a rack, and a tandem oil way is arranged between the main oil cylinder and the auxiliary oil cylinder; an upper tool rest is installed in the middle of the rack, two sets of connecting bases are fixedly installed at the upper end of the upper tool rest, and ball heads matched with the connecting bases are installed at the output ends of the main oil cylinder and the auxiliary oil cylinder; a main oil cylinder upper cavity and a main oil cylinder lower cavity are formed in the main oil cylinder, and an auxiliary oil cylinder upper cavity and an auxiliary oil cylinder lower cavity are formed in the auxiliary oil cylinder. According to the numerical control gantry cut-off machine capable of changing the shearing angle, the problems that when the shearing angle of an existing cut-off machine is fixed in the using process, when a shearing material is subjected to unbalance loading, a tool rest can be clamped by a guide rail, and when a thin material is sheared, the angle cannot be adjusted, so that the shearing stroke is lengthened, the shearing speed cannot be increased, and the shearing efficiency is reduced can be solved.

The invention provides a method for predicting the thickness of burrs on the top of a machining area of a complex thin-walled part, and relates to the technical field of precision manufacturing of complex thin-walled parts for aerospace. (2) a milling area top burr thickness prediction model considering thin-wall part and tool deformation; the method is used for accurately predicting the thickness of the burrs at the top of the milling area of the complex thin-walled part, the prediction model only needs to use material characteristics, cutting parameters and tool geometric parameters, and experimental measurement of a shear angle and a friction angle is not needed; the problem that the prediction precision of the top burr thickness is low due to the fact that thin-walled parts and tool deformation in the milling machining process are ignored in an existing method is solved.

The application discloses a kind of anti-cracking performance evaluation method and computer equipment for asphalt stress absorbing layer, it is related to pavement engineering technical field, the method includes: stress absorbing layer test piece is carried out oblique shear test, and index information in the process of oblique shear test is collected, the index information includes shear angle, stress load, vertical displacement, lateral displacement, interlayer dislocation displacement and stress absorbing layer adhesion force;According to the index information, the interlayer adhesion coefficient and interlayer stress absorbing coefficient of the stress absorbing layer test piece are calculated;According to the interlayer adhesion coefficient and interlayer stress absorbing coefficient, the anti-cracking performance of the stress absorbing layer test piece is evaluated.The application can introduce the interlayer adhesion coefficient and interlayer stress absorbing coefficient of stress absorbing layer test piece, and accurately evaluate the anti-cracking performance of asphalt stress absorbing layer.

The shearing angle adjusting device of the numerical control plate shearing machine comprises a workbench, an adjusting assembly, a limiting assembly and a plate shearing blade, the adjusting assembly is arranged at the top of the workbench, and the adjusting assembly comprises an adjusting plate, an anti-skid pad, an adjusting handle, an adjusting block, a connecting plate, a spring, an anti-skid plate, a first bevel gear and a second bevel gear. The adjusting plate is fixedly installed on the top of the workbench, an arc-shaped groove is formed in the front side of the adjusting plate, the anti-skid pad is fixedly installed in the arc-shaped groove, and the adjusting handle is rotationally installed on the front side of the adjusting plate. According to the shearing angle adjusting device, a worker can conveniently and rapidly adjust the plate shearing blade and limit and fix the plate shearing blade through the arranged adjusting assembly, and therefore the angle adjusting efficiency of the shearing angle adjusting device is improved. The limiting assembly can be matched with the adjusting assembly to limit and fix the plate shearing blade, so that the limiting and fixing effect of the adjusting assembly on the plate shearing blade is improved, and the using stability of the shearing angle adjusting device is improved.

The utility model discloses an angle steel shearing machine which comprises a base, a plurality of angle steel containing grooves used for containing angle steel are formed in the top of the base, and a shearing mechanism used for shearing the angle steel is arranged above the angle steel containing grooves in a matched mode. Through the arrangement of a series of structures, the angle steel shearing blade can be driven to move downwards before shearing, meanwhile, a plurality of pieces of angle steel can be pressed and fixed synchronously, the displacement condition of the angle steel in the cutting process can be effectively reduced, the shearing stability is improved, and the shearing efficiency is improved. In addition, a shearing area can be shielded and protected during shearing, falling disintegrating slag can be sucked and collected, subsequent cleaning work of personnel is facilitated, meanwhile, the situation that the sheared disintegrating slag is splashed outwards can be effectively reduced, in addition, multiple pieces of angle steel can be synchronously driven to move forwards in an electric driving mode after one-time shearing, and the shearing efficiency is improved. Manual one-by-one movement by personnel is not needed, personnel operation is facilitated, and working efficiency is improved.

This invention provides a modeling method for the shear force of a crescent-shaped shear blade, comprising the following steps: 1) expanding and parameterizing the theoretical shear blade arc into a function based on its formation process; 2) calculating the slope of each point on the arc; 3) determining the shear angle at each point on the arc based on the slope in step 2); 4) calculating the Nosari shear force using the shear blade shear's Nosari formula; 5) calculating the shear force at each point on the arc based on step 4); and 6) identifying the point with the maximum shear force within the range of the arc's values ​​as the design basis for the crescent-shaped shear blade. The data used in this modeling process are readily available, thus avoiding the impact of measurement errors on the shear force data, resulting in high calculation accuracy and precision. This invention solves the modeling problem for calculating the shear force of a crescent-shaped shear blade, transforming a complex model into a simple one, saving time, and offering low cost and high flexibility.

The utility model belongs to the technical field of bridge detection, and particularly relates to a device for rapidly measuring the shearing angle of an in-use service bridge rubber support. The angle measuring device comprises a measuring frame, an angle measuring protractor and an angle measuring support rod, the measuring frame is a movable frame with a rotatable frame, and the angle measuring protractor is connected to the measuring frame; the two ends of the angle measurement supporting rod are rotationally connected to the measurement frame, and one end of the angle measurement supporting rod is located at the center point of the angle measurement protractor. The device is simple and convenient to operate and high in measurement precision. In the using process, reading errors caused by different observation angles are avoided. Due to the design of the measuring frame and the horizontal indication level bubble, the size of the bottom fixed measuring feeler lever and the size of the top movable measuring feeler lever can be designed according to the distance between an operator and a bridge pier and a bridge abutment top face support, and the operator can conveniently measure the shearing angle of the support in the limited space of a bridge in use.

An iron tower component hydraulic corner cutting self-adaptive limiting frame comprises a pressing die and a positioning die, the limiting frame is arranged on the positioning die, the limiting frame comprises an abutting block, an opening of the positioning die is in a U shape, an L-shaped notch is formed between the abutting block and the positioning die, and angle steel can be inserted into the L-shaped notch. The abutting block abuts against the angle steel after the angle steel enters the positioning die, and the abutting block retreats to the other end face after the angle steel is sheared by the pressing die. The angle steel shearing device has the advantages that geometric constraint is formed through matching of the U-shaped opening and the L-shaped notch, the three-dimensional positioning accuracy of angle steel in the shearing process is guaranteed, and position deviation can be reduced compared with a traditional manual positioning mode.

The utility model provides an intelligent plate shearing machine capable of automatically adjusting shearing angles, which relates to the technical field of plate shearing machines and comprises an operation table, a first rolling wheel is arranged on one side of the operation table, and a second rolling wheel is arranged on one side of the operation table. In this way, the shearing angle of the cutting tool bit can be controlled by operating the control cabinet in the using process, and it is guaranteed that the extremely high precision can be achieved in each time of cutting. The intelligent plate shearing machine is beneficial to reducing cutting errors, improving consistency and quality of products and avoiding material waste or follow-up machining difficulty caused by inaccurate angles, meanwhile, through adjustment of the angle steering gear, the intelligent plate shearing machine can better adapt to materials of different thicknesses, hardness and materials, the shearing angle can be adjusted in real time according to the characteristics of the materials, and the production efficiency is improved. Due to the adaptability, the machine not only can treat conventional materials, but also can cope with some materials with special requirements, and the application range of the machine is widened.

The present invention provides a ship steel plate shearing automation control method and system, which relates to the field of artificial intelligence technology. The method includes: generating corresponding mechanical arm motion trajectory and initial instructions for posture adjustment according to coordinate and posture information; controlling the mechanical arm to move to a specified position according to the initial instructions, and performing shearing operations according to preset shearing lines and shearing angles; real-time monitoring of the force, speed and position information during the shearing process, and comparing with the preset parameter range, analyzing the force, speed and position information during the shearing process, and identifying the deviation value during the shearing process; calculating the dynamic adjustment factor according to the size and direction of the deviation value; generating the final adjustment instruction according to the dynamic adjustment factor, and performing shearing operations according to the final adjustment instruction. The present invention can not only improve the shearing accuracy, but also improve the efficiency and fluency of the entire shearing process.

According to the rock shearing multi-strain-rate effect test device and method, the contact angle between a rock sample and a creep load loading system or an impact disturbance applying system is adjusted through a rock clamp, and then the shearing angle of the rock sample is adjusted so as to be used for simulating different occurrence angles of a rock body; a creep load is applied to the rock sample through the creep load loading control system and is used for simulating a long-time creep damage effect of a rock body; a rock sample in a rock clamp is subjected to dynamic impact through an impact disturbance applying system so as to simulate dynamic fatigue damage of impact disturbance to a rock mass, and in the embodiment, under the combined action of a rock shearing clamp, a creep load loading control system, the impact disturbance applying system and a temperature control and regulation system, the dynamic fatigue damage of the rock mass caused by the impact disturbance can be simulated. The device can simulate the shearing mechanical response of a rock mass under long-term creep, dynamic impact and temperature alternation, realizes multi-strain-rate and multi-angle shearing mechanical characteristic detection of a rock sample, and provides an experimental basis for fault activation mechanism research.

The invention discloses a locking type metal plate shearing device, and belongs to the technical field of metal plate shearing, the locking type metal plate shearing device comprises an automatic correction locking conveying part, the automatic correction locking conveying part comprises a locking conveying assembly and a metal plate part correction assembly, and the locking conveying assembly and the metal plate part correction assembly are both arranged on one side of a supporting rack; a movable adjustable plate shearing part used for conducting multi-angle and multi-position shearing on a sheet metal part is arranged on the upper side of the supporting rack and comprises a moving assembly used for displacement, an adjusting assembly capable of adjusting the shearing angle and a shearing assembly for buffering shearing. According to the movable adjustable plate shearing part, horizontal movement of a shearing assembly is achieved through a first linear sliding rail and a first supporting frame, flexible adjustment of the shearing angle is achieved in combination with a hydraulic cylinder and a gear transmission mechanism (a first gear and a second gear), and due to the design, the device can shear sheet metal parts at multiple angles and multiple positions; and the machining requirements of complex shapes and sizes are met.

The invention belongs to the technical field of transformers, and discloses an iron core piece, an iron core and a design method, the iron core piece comprises an iron yoke piece, a core column piece and a side column piece, the end parts of the inner edges of two core columns on the same side are connected with a core column beveled edge, and the end parts of the two core column beveled edges on the same side are connected; the same sides of the side column outer edge and the side column inner edge are connected through a side column inclined connection edge; the sides, close to the side column sheet, of the yoke inner edge and the yoke outer edge are connected through a first yoke oblique connection edge, and the other sides are connected through a second yoke oblique connection edge; the included angle between the side column beveled edge and the side column outer edge connected with the side column beveled edge is greater than 45 degrees; the included angle between the second iron yoke miter joint edge and the iron yoke inner edge is smaller than 135 degrees. Differentiated shearing angle design is adopted for the iron yoke and the side columns, by changing the shearing angles, it is guaranteed that the utilization rate of the iron core pieces is not changed, the width of the iron yoke pieces is increased, the filling coefficient is increased, the magnetic density of the joints is reduced by increasing the lengths of the joints, and meanwhile the magnetic density of the iron yoke and the magnetic density of the side columns are reduced.

The present application relates to a kind of micro drill cutting force modeling methods associated with cutting edge position and shearing stress, belong to mechanical processing technical field.The method first obtains material relevant attribute and tool parameter, then through Johnson-Cook constitutive model, the equation of shearing stress and tool rake angle, shearing angle, friction angle, cutting speed is established, then the numerical value of shearing stress is obtained by solving, finally according to shearing stress, the cutting force generated by main cutting edge and horizontal blade is obtained, and finally total cutting force is obtained.The cutting force modeling method considering the influence of workpiece material shearing stress of cutting edge position provided by the present application considers the change of workpiece material attribute and cutting force coefficient in different cutting positions, realizes the accurate prediction of micro drill cutting force.

The invention relates to a microelectromechanical device (1) for generating a fluid pressure (p) with a displacement structure (2), wherein the displacement structure (2) comprises a volume element (3) with lamellae (4, 4') and connecting elements (5, 5') connecting the lamellae (4, 4'), which together with the lamellae (4, 4') enclose a cavity volume of the volume element (3), wherein the cavity volume for generating the fluid pressure is variable by means of an actuator (6) acting on the volume element (3), and wherein the actuator (6) is configured to displace a connecting element (5, 5') of the volume element (3) at a shear angle (α). The invention also relates to a microelectromechanical loudspeaker with such a device (1).

A scissor lift table (1) with a base (2) and a working section (3) which is height-adjustable relative to the base (2), with at least one scissor mechanism (4) arranged between the base (2) and the working section (3), which comprises two scissor arms (5, 6) pivotally connected to each other in a cross-like manner, wherein a first end region of a first scissor arm (5) is pivotably mounted on the base (2) and a first end region of a second scissor arm (6) is pivotably mounted on the working section (3) and the respective opposite end regions are guided longitudinally displaceably on the working section (3) and on the base (2), and with a lifting drive device (7), wherein the lifting drive device (7) comprises two threaded spindles (9, 10) arranged parallel to each other, on which at least one spindle nut (11) is arranged, wherein the spindles (9, 10) can be driven together by a drive, so that the spindle nuts (11) relative to the spindles (9,10) are adjustable in the axial direction, wherein the spindle nuts (11) are mounted in a bearing housing (13) in a rotationally fixed manner, and wherein at least one engagement element is provided which is force-transmittingly coupled to at least one spindle nut (11) and force-transmittingly connected to a linear drive means which has a substantially horizontal section and a section extending in the stroke direction of the working part (3) between the base (2) and the working part (3) and is supported at least at one end on the base (2) and / or on the working part (3), such that an axial adjustment of the spindle nuts (11) causes a displacement of the engagement element relative to the spindles (9, 10) and thereby a change in the shear angle and a height adjustment of the working part (3).

To provide a method and an apparatus for manufacturing a hollow bent part having a small bending radius and an acute apex angle of a bent part. Another object of the present invention is to provide a hollow bent part manufactured by the method and apparatus for manufacturing a hollow bent part.SOLUTION: In the method and apparatus for manufacturing a bent hollow component, the hollow blank Pm is supported at the first position A while being fed in the feed direction along the longitudinal direction of the hollow blank Pm, the hollow blank Pm is partially heated at the heated portion at the second position B, the hollow blank Pm is cooled at the third position C, and the hollow blank Pm is held at the holding position after passing the third position C and moved in the two-dimension direction or the three dimensional direction to apply a shear force to the heated portion to form the shear-bent portion SB. In the step of forming the shear bending portion SB, the shear angle θ of the shear bending portion SB is set to be more than 90 ° and less than 180 ° by moving the holding position including the moving speed component Vx in the direction opposite to the feeding direction.SELECTED DRAWING: Figure 1

This invention discloses a roadway sidewall support design method based on shear failure theory. Addressing the problem that existing suspension theories cannot explain the sidewall failure mechanism, it proposes that sidewall failure is essentially shear slip; by establishing shear angle... θ =45°- Φ / 2. Height of loose material in the tunnel roof h 1=( B +2 H tan θ ) / (2 f ), width of loose body in the side J = H tan θ, Determine the number of anchor bolts per row N = K ( G 1+ G 2) / ( T tan θ This method employs a core formula system to accurately calculate the number, spacing, and length of rock bolts in the ribbed wall. All parameters in this method are directly related to the mechanical properties of the surrounding rock. Through the principle of mechanical equilibrium, it accurately calculates the rock bolt support parameters for the roadway ribbed wall, conforming to the ribbed wall shear failure mechanism. The design results are consistent with engineering practice. This method not only explains the ribbed wall failure mechanism but also provides calculation results that are highly consistent with reality, demonstrating significant safety and economic benefits.

The utility model belongs to the technical field of modification machines, and particularly relates to a novel stirring blade of a modification machine, which comprises a paddle and a plurality of vertical paddle teeth arranged on the paddle, each vertical paddle tooth is provided with at least one shearing angle, at least one side of each shearing angle is provided with a guide shearing surface, and the guide shearing surfaces are used for scrubbing and material guiding. The paddle is provided with a plurality of circles of vertical paddle teeth which are arranged in the same circle center, the center points of all the vertical paddle teeth on the same circle are located on the same rotating circle, the cross section of each vertical paddle tooth is in a rectangular shape, and the connecting line of the diagonal lines of the vertical paddle teeth is tangent to the rotating circle where the center point of the vertical paddle teeth is located. The utility model provides a novel stirring blade of a modifying machine, which can greatly improve the shearing capacity and scrubbing capacity of products, particularly improve the scrubbing capacity for fine particles, and improve the flotation efficiency and the recovery capacity.

To provide a technology capable of reducing the load on a die when a high-strength soft magnetic foil material is press-punched and suppressing the height of burrs on the punched material. [Solution] A press processing device 10 is provided with a punch 12 and a die 14, and punches out a plate-shaped workpiece 18 transported between them by lowering the punch 12, and collects the punched material 20 as a product. The workpiece 18 is made of a high-strength soft magnetic foil material such as an iron-based amorphous alloy foil, and a shear 40 is attached only to the punch 12 side. This shear 40 is composed of a first edge E1 formed at the tip of the punch 12, a second edge E2 formed on the side of the punch 12, and an inclined surface 12a connecting the first edge E1 and the second edge E2, and the shear angle, which is the angle between the horizontal plane H tangent to the first edge E1 and the inclined surface 12a, is set within the range of 0.23 to 0.68 degrees.

The utility model relates to the technical field of profile processing, in particular to cold roll forming shearing equipment which comprises a base, a mounting plate, a shearing assembly and an angle adjusting assembly, the upper end face of the base is connected with one end of the mounting plate, the mounting plate is perpendicular to the base, and a through hole in the horizontal direction is formed in the mounting plate; the shearing assembly and the angle adjusting assembly are connected to one side wall of the mounting plate in the horizontal direction, the angle adjusting assembly is rotationally connected with the mounting plate, and one side of the angle adjusting assembly is used for being connected with the shearing assembly. According to the profile shearing device, the shearing assembly moves in the horizontal direction of the mounting plate in the using state to shear profiles passing through the through hole, the angle adjusting assembly can drive the shearing assembly to freely rotate with the central axis of the through hole in the mounting plate as the circle center in the using state, and after rotation, the angle of the shearing assembly can be fixed through the limiting assembly; the shearing assembly can adapt to various working environments, meanwhile, the angle needed by adjustment of the shearing assembly is reduced, and manual adjustment is achieved rapidly.

The utility model provides a shearing angle regulator and multifunctional shears, which comprise a mounting seat detachably mounted on a shearing tool, the mounting seat is provided with a shearing plate and a U-shaped sleeve fixed on the end face of the shearing plate, the U-shaped sleeve is sleeved on a tool rest of the shearing tool, and the shearing plate corresponds to a blade of the shearing tool; the end face, deviating from the U-shaped sleeve, of the shearing plate is provided with an adjusting backup plate and / or a plurality of inclined grooves. The adjusting backup plate is rotationally installed on the shearing plate and used for rotationally adjusting the shearing angle of a to-be-sheared part. During shearing, a to-be-sheared piece is arranged in the inclined groove or one side of the to-be-sheared piece abuts against the adjusting backup plate, and the blade moves towards the shearing plate to shear the to-be-sheared piece. The multifunctional shear comprises a shearing tool body and a shearing angle adjuster detachably installed on the shearing tool body. According to the shearing angle regulator and the multifunctional shear, the defect that an existing shearing tool is single in function is overcome.