47results about How to "Good cross section quality" patented technology

The invention provides a hot stamping and warm blanking composite forming technology and mould for ultrahigh-strength steel. By means of the composite mould, blanking is composited in a hot stamping process, and trimming and punching are performed on sheet metal at a temperature higher than a martensite formation temperature. The hot stamping and warm blanking composite forming technology comprises the following processes of putting the sheet metal of the ultrahigh-strength steel heated to achieve complete austenitizing into the composite mould, performing stamping forming and then performing cooling and quenching; heating sheet metal needing blanking locally, keeping a warm state, performing warm blanking after completion of forming, and performing cooling further in a pressure maintaining mode. The hot stamping and warm blanking composite forming technology and mould for ultrahigh-strength steel effectively solves the problems of poor quality, low precision, high cost and long period of holes trimmed and punched in the later period of the ultrahigh-strength steel and has great practical significance in production practice.

The invention discloses a bar stock pneumatic radial impact high-efficiency precise blanking method. In the method, the bar stock is arranged on a pneumatic radial impact precise blanking device and the main working parts of the blanking device comprise a blanking sleeve, an elastic pad sleeve, a bar stock fixing sleeve, an impact cylinder, a piston and a blanking die. The impact cylinder works sequentially under the control of a control system and drives the blanking die to load the bar stock along the radial direction continuously; cracks are extended from the surface of the bar stock along the radial direction to the center of the circle by a fatigue breaking device of the bar stock, thus achieving the blanking and gaining good quality of the profile.

The invention relates to a plane edge-pressing and semi-fine blanking device and a method. The device is provided with a plane pressure plate and a concave die, when a workpiece is punched, the plane pressure plate needs to enable edge-pressing force to press on the outer edge of a profile of the workpiece on a workpiece blank, and the edge-pressing force can generate great friction force betweenthe surface of the workpiece blank and the plane pressure plate and between the surface of the workpiece blank and the concave die, so as to prevent the material of the workpiece blank from flowing out of the profile of the workpiece. The device is matched with punching force, three-dimensional pressure stress is generated in the material of the workpiece blank in an extrusion zone, and plastic flow is generated, so as to enable the numerical values of the pressure stress in the three-dimensional directions to tend to be consistent, enable the material of the workpiece blank in the profile ofthe workpiece to be in the hydrostatic pressure state and have a maximal plastic deformation range, reduce a region for generating tensile stress in a shearing deformation zone and prevent the emergence of cracks on the surface of a cross section of the workpiece. By using the plane edge-pressing and semi-fine blanking device and the method, an ordinary punch can be used, the processing of a die is simple, a pressurization region on the workpiece blank can not cause damages, the processing cost is low, the quality of the workpiece is high, and the device and the method are convenient to popularize and apply in the punching industry.

The invention relates to a symmetrical multi-cavity discharging technology. The working object of the discharging technology is a flat belt, and the formed products are flat annular columnar workpieces punched from the belt. A shearing step is increased before punching in the technology, namely the shape of each workpiece is previously sheared, and workpiece blanks are obtained, a gap is reserved between the two adjacent workpiece blanks in each column in the machining and advancing direction of the belt, and the belt can absorb micro expansion, so that alignment of the workpieces during machining with a mold is facilitated, the qualification rate is improved, and high section quality and flatness of the workpieces are obtained. Semi-cutting can be adopted when the outer edges of the workpieces are punched, so that the flatness of the surfaces of the workpieces is further improved; and a small quantity of connecting bands can be reserved only among the workpiece blanks during shearing, so that the expandable space of the workpiece blanks is increased, and the influence of stretching of the belt on the positions of the workpieces is further reduced.

The invention discloses a laser cutting device and method for controlling plasma through an electromagnetic field to regulate and control crack expansion. The device comprises a multi-axis moving platform (9), an imaging system for obtaining surface images of a machining workpiece (14) on the multi-axis moving platform (9), a hidden cutting device used for generating laser beams (15) and an electromagnetic field generation device used for generating electric field force and magnetic field force applied to the plasma, wherein the laser beams (15) are gathered into the machining workpiece (14),and workpiece materials are gasified and ionized into the plasma. The plasma moves in an accelerating manner under the action of the electric field force and the magnetic field force, formed cracks are further impacted, and crack expansion is achieved. Through control over the space-time position and the field energy of the electromagnetic field, the purpose of ultra-fast laser hidden cutting on the basis that the electromagnetic field controls the plasma to regulate and control crack expansion is achieved. According to the laser cutting device and method, the ultra-fast laser hidden cutting quality is kept and improved, and meanwhile the bottleneck problem about the low hidden cutting efficiency is solved.

The present invention relates to a method for cutting a polarizing plate using a laser, in which a beam shape of the laser is an elliptical shape and a major axis of the elliptical shape is parallel to a cutting direction, and a polarizing plate cut using the same.

The invention discloses a radially-severing efficient and precise low-stress discharging method, and belongs to the technical field of intelligent manufacturing. Four sets of discharging units symmetrically distributed in the circumferential direction of bars sequentially apply loads to the bars at intervals. Each set of discharging unit comprises discharging clamps arranged at the ends of a firsthydraulic oil cylinder and a second hydraulic oil cylinder, and thrust hammerheads fixed to the ends of piston rods of a third hydraulic oil cylinder and a fourth hydraulic oil cylinder. The discharging clamps and the thrust hammerheads are oppositely arranged, when the bars are severed, after the thrust hammerheads jack the bars, the discharging clamps apply loads to the two ends of V-shaped grooves of the bars simultaneously, the discharging clamps and the thrust hammerheads in the four sets of discharging units cooperate to generate alternating force at the positions of the V-shaped grooves, under the acting force, cracks are produced at the positions of the V-shaped grooves, it is guaranteed that the cracks circumferentially propagate along the sections of the sharp ends of the V-shaped grooves gradually towards circle centers, and the beneficial effects that the efficiency is high, the fatigue crack propagation region area is large, and the fracture surface quality is high are achieved.

The invention discloses a metal bar material blanking device. The metal bar material blanking device comprises a feeding system, wherein a milling groove system is arranged on one side of the feedingsystem; the milling groove system is correspondingly connected with a clamping system and a cooling system; and a blanking system is arranged on one side of the milling groove system. The blanking method comprises the following steps of 1, feeding a metal bar material through a through hole a and a through hole b to the clamping system through the feeding system; a three-jaw chuck a and a three-jaw chuck b clamp and fix the metal bar material; 2, milling the metal bar material; 3, adjusting the position of a nozzle and the water flow speed, starting a water pump, and cooling the metal bar material; 4, loosening the three-jaw chuck a and the three-jaw chuck b, and moving the metal bar material to the blanking system through the feeding system; and 5, starting a clamping cylinder a and a clamping cylinder b to clamp and fix the metal bar material, starting an impact cylinder, and pushing a pressing block to strike the metal bar material, so that the metal bar material is disconnected.

Radial cam loading and low-cycle fatigue splitting equipment for subdivision-type connecting rod fracture splitting comprises a base. The left side and the right side of the base are fixedly connected with four vertical columns. A cross beam is fixedly connected with the upper sides of the four vertical columns. Servo motors are bilaterally and symmetrically installed on the cross beam. The servo motors are connected with a cam plate lifting mechanism installed on the upper portion of a spline shaft. A motor decelerating power mechanism is connected with the lower portion of the spline shaft. The middle of the spline shaft is connected with a main working table. An upper end cam plate and a corresponding lower end cam plate of the main working table impact the upper end and the lower end of a core rod simultaneously, so that a connecting rod large head hole with a prefabricated fracture splitting groove is loaded repeatedly, and low-stress fatigue separating of the connecting rod large end and a connecting rod body is completed. The radial cam loading and low-cycle fatigue splitting equipment for subdivision-type connecting rod fracture splitting has the advantages of being environmentally friendly, energy saving, high in machining efficiency, wide in application range and good in fracture surface quality.

The invention discloses a radial breaking high-efficiency precise low-stress discharging machine, and belongs to the technical field of intelligent manufacturing. The radial breaking high-efficiency precise low-stress discharging machine comprises four groups of discharging units symmetrically distributed in the circumferential direction, each group of discharging units includes a first hydrauliccylinder, a second hydraulic cylinder, discharging fixtures disposed at the end parts of piston rods of the first hydraulic cylinder and the second hydraulic cylinder, a third hydraulic cylinder, a fourth hydraulic cylinder and thrust hammers separately fixed to the end parts of piston rods of the third hydraulic cylinder and the fourth hydraulic cylinder; the discharging fixtures and the thrust hammers are oppositely arranged; when a bar material is subjected to breaking, after the thrust hammers abut against the bar material, the discharging fixtures apply loads to both ends of a V-shaped groove of the bar material, and alternating force is generated at the V-shaped groove. Under the force, cracks are formed at the V-shaped groove, it is ensured that the cross section of the tip end of the V-shaped groove gradually expands toward the center of the circle in a circumference mode, and the quality and flatness of the cross section of the bar material are improved by changing the loadingmode of the bar material.

The invention discloses five-star plunger loading and low cycle fatigue cracking equipment of split type connecting rod cracking. The five-star plunger loading and low cycle fatigue cracking equipment comprises a base. The base is connected with four upright columns; the upright columns are connected with a variable frequency motor through a motor bracket; and the control end of the variable frequency motor is connected with the output end of a control cabinet. An output shaft of the variable frequency motor is connected with a belt wheel shaft through a clutch, a small belt wheel, a narrow V belt and a large belt wheel. The lower end of the belt wheel shaft is movably connected with a supporting frame, and the upper end of the belt wheel shaft is connected with the bottom end of an eccentric shaft through a coupler. Five-star wheels are mounted on the eccentric part of the eccentric shaft and arranged in an upper plunger body and a lower plunger body, wherein the upper plunger body and the lower plunger body are symmetrically arranged on the upper side and the lower side of a placing platform of the base. Each edge of the five-star wheels is connected with a plunger, and the plungers are inserted in the upper end and the lower end of a mandrel of a connecting rod large head hole of a prefabricated V-shaped cracking groove in a butting mode and power is repeatedly loaded simultaneously. The efficiency of connecting rod cracking is greatly improved, and the cracking equipment has the advantages of environmental friendliness and energy saving, high machining efficiency, wide application range and good fracture surface quality.

The invention relates to a pneumatic type controllable radial impact precision blanking machine for metal bar and tube materials. The pneumatic type controllable radial impact precision blanking machine comprises a metal bar and tube material clamping device, a power transmission device and a load application device. The metal bar and tube material clamping device comprises a bar and tube material sleeve used for fixing the metal bar and tube materials. The power transmission device comprises an alternating current servo motor and a revolving connecting plate driven by the alternating current servo motor. The load application device comprises a rotary cylinder which is connected to the revolving connecting plate and is of a symmetrical structure. The alternating current servo motor is used for driving the rotary cylinder of the symmetrical structure, so that loading is carried out in the circumferential direction of the metal bar and tube materials in a certain load sequence, and precision blanking of the metal bar and tube materials is finished under the cyclic action of bending moment loads. By adjusting the rotation angle and rotation speed of the alternating current servo motor and the air inlet and outlet sequence and air inlet amount of the rotary cylinder, an impact hammer in the rotary cylinder can accurately and rapidly apply constant amplitude impact loads to the specific loading position. The whole pneumatic type controllable radial impact precision blanking machine for the metal bar and tube materials has the advantages of being simple in structure, good in stability, high in controllability and the like.

The invention discloses a brick cutter for a construction site and a method for cutting bricks through the brick cutter. The brick cutter comprises a base (1) used for containing the bricks, a supporting framework (2) arranged on the base (1), a lower tool (3) and an upper tool (4); the lower tool (3) is detachably installed on the base (1), and an edge of the lower tool (3) is upward; a tool mounting frame (5) is arranged on the top of the supporting framework (2) and forms a vertical movable pair with the supporting framework (2); the upper tool (4) is installed at the bottom of the tool mounting frame (5), and an edge of the upper tool (4) is downward; and the upper tool (4) and the lower tool (3) are parallel and located in the same vertical plane. The brick cutter has the beneficial effects that the brick cutter can conveniently cut the bricks, the quality of fracture surfaces of the cut bricks is good, and meanwhile, the brick cutter has the advantages of being simple in structure and convenient to operate.

According to the vortex beam laser processing method, laser processing equipment is adopted, and the laser processing equipment comprises a light source element, a collimating lens element, a vortex phase plate, an axicon and a Fourier lens. The light source element, the collimating lens element, the vortex phase plate, the axicon and the Fourier lens are sequentially arranged along the light beam propagation direction; the laser processing method for the vortex light velocity comprises the following steps of obtaining a Gaussian beam, generating a vortex beam, adjusting a focus spot and performing laser processing. The laser cutting device has the beneficial effects that laser cutting machining is conducted through the vortex light beams polarized in the radial direction and the angular direction, the cutting efficiency can be effectively improved, better section quality can be obtained, and the laser cutting device can be suitable for metal machining with the high depth ratio.