52results about How to "Consistent curvature" patented technology

The invention relates to an accurate rounding method of a large-diameter metal cylinder body, which comprises the steps of: manufacturing rounding moulds in advance according to the requirements for the sizes and the precisions of a cylinder body by using physical characteristics of heat expansion and cold contraction of a metal material, connecting the rounding moulds by using a distance rod with threads at two ends to form a rounding mould set; and placing the cylinder body to be rounded on a support platform of a heating furnace (or thermal treatment furnace), then placing in the heating furnace (or thermal treatment furnace) for heating, heating to reach the final heating temperature, then taking the cylinder body out, loading in the rounding mould set, slowly cooling, when the cylinder body is cooled to the room temperature, ensuring that the inner surface of the cylinder body and the outer surface of the rounding mould are naturally jointed and the cylinder body can reach the required roundness. Compared with the traditional mechanical strength rounding method of the cylinder body, the accurate rounding method has remarkable advantages of high rounding precision and less residual stress after rounding, can be used for accurate rounding in the process of machining the large-diameter metal cylinder body, especially accurate rounding of the large-diameter metal cylinder body and a large-diameter rotary metal cylinder body with high strength and large wall thickness.

A header beam couples between A-pillars of a vehicle frame. The header beam is formed from a generally straight beam segment that is extruded to have a hollow body portion with supportive legs extending within the hollow interior along the length of the beam segment, defining uninterrupted forward and rearward box sections for supporting continuous load paths on the header beam. The end portions of the beam segment are clamped and the beam segment is stretch bent to form a curvature between the end portions that remain generally straight. A front flange extends forward along the body portion and is struck proximate the end portions to form an edge that is parallel to the curvature formed between the end portions. The end portions are attached to the A-pillars and the edge of the front flange is attached to a windshield.

The invention discloses a method for repairing an airplane composite material part by adopting a separated double-vacuum-bag hot press molding process, which comprises the following steps of: (1) selecting a to-be-repaired area of the airplane composite material part, and paving a laminated patch; (2) sequentially paving a porous separation membrane, glass wool cloth, a non-porous separation membrane and breathable cotton on the laminated patch; (3) laying an adhesive tape along the edge of the breathable cotton, covering a first vacuum bag, installing a first vacuum valve and a vacuum meter,and adjusting the pressure; (4) selecting a heating blanket, and wrapping the heating blanket with breathable cotton for fixing the breathable cotton on the first vacuum bag; (5) laying an adhesive tape along the edge of the breathable cotton, covering a second vacuum bag, installing a second vacuum valve and an adjustable vacuum meter, and adjusting the pressure; and (6) selecting a hot patchinginstrument, connecting the hot patching instrument with a heating blanket, heating and curing the laminated patch. According to the method, the interference and influence on the curved surface shape of the bonding patch are reduced by adopting a separated double-vacuum-bag hot-press molding process, and the radian and curvature of the molded surface are maintained.

The invention relates to the field of pipe machining and manufacturing and in particular to a pipe bending machine with a feedback adjustment function. The pipe bending machine comprises a rack, pipe bending devices, a test feedback device and a controller. The rack is provided with a mounting platform. The pipe bending devices are arranged above the mounting platform. The pipe bending devices are used for bending pipes and adjusting the pipes in real time under the action of the controller. The test feedback device is connected with the mounting platform and located on the left sides of the pipe bending devices. The test feedback device is used for testing the bent pipes and feeding information back to the controller. The controller is located below the mounting platform. The controller is used for processing the information fed back by the test feedback device and controlling the pipes on the pipe bending devices to be bent. By means of the pipe bending machine, the angle of the bent pipes can be corrected in the pipe bending process, pipe molding can be facilitated, and the bending degree of the pipes is highly consistent; and meanwhile, the damage rate of the pipes can be lowered, and the damage rate of materials is lowered.

A secondary method in power engineering is characterized by comprising the following steps of: (1) wiring; (2) wirer installation; and (3) wire distribution. The invention has the advantages of simple and light structure, convenient use and easy operation. The invention is convenient for each person to grasp and different people with different processes to achieve the unified standard in wiring after using the method; a core wire has consistent radian and distinct grains; the wires are horizontal even vertical; and the listed cable is order and attractive and has strong perception.

The invention discloses a directional automatic control bending machine which structurally comprises movable clamping columns, a fixing ring, bolts, a sticking plate, wheels, a supporting box, a control plate, an alloy plate, a fixing sleeve, a supporting shaft, an inserting seat and an automatic directional bending disc. The movable clamping columns are embedded in the inserting seat, and the bottom of the fixing ring is welded to the alloy plate; and the bolts are in threaded connection with the alloy plate. The directional automatic control bending machine is structurally provided with theautomatic directional bending disc, when the directional automatic control bending machine works, steel bars penetrates through the two movable clamping columns, the fixing effect is achieved, and thesteel bars stretch into the movable clamping columns till the steel bars abut against stopping bodies; at this moment, a rotary disc starts to rotate clockwise, a center shaft is fixed to the rotarydisc, and a bearing rotates along with the rotary disc and drives one ends of the steel bars to be bent till the steel bars are bent to form the needed angles; and thus, the stretched steel bars can be directionally bent so that the steel bar bending degrees can be consistent, and the working efficiency is improved.

The invention relates to a press machine device for bending a U-shaped round steel fillet hook. The device comprises an upper die and a lower die, the upper die comprises an upper die body, and an inner clamped shape and a U-shaped puncher pin with a straight fillet belt are arranged on the upper die body. The lower die comprises a lower die body, a U-shaped support frame matched with the puncher pin is arranged on the lower die body, and a lower die rotation shaft is arranged on two opening ends of the U-shaped support frame. The press machine device for bending the U-shaped round steel fillet hook is used in a press machine to bend round steel through the die to achieve purposes of being good in molding, high in accuracy, wide in applicable scope, simple in operation and high in work efficiency.

The invention discloses a large-caliber steel pipe coiling machine. The large-caliber steel pipe coiling machine comprises a second machine body. A straight gear and a bevel gear are arranged in the second machine body and are in meshing connection through gear teeth. The outer wall of one side of the straight gear is rotationally connected with a hand wheel through a rotation shaft, a second leadscrew is welded to the outer wall of one side of the bevel gear, and the second lead screw is in screwing connection with a second screw nut base through a thread. A first supporting frame is arranged on the top of the second screw nut base, the top of the first supporting frame is in screwing connection with a first thread hand rod through a thread, a rotation roller is arranged at one end of the first thread hand rod, and a fourth motor is fixedly connected to the inner top of the second machine body through bolts. According to the large-caliber steel pipe coiling machine, on one hand, automatic circular pipe conveying can be guaranteed, the trouble of manpower pushing is reduced, and time and labor are saved; and on the other hand, constant-speed feeding can be achieved, consistent coil pipe curvature is guaranteed, the quality is improved, and the probability of defective goods is reduced.

A bending device for glass legs comprises a base seat 1, a positive-negative rotating motor 2, a programmable logic controller (PLC)3, a sub master pattern 4, a pressure gage 5, a lead screw 6 and a pressurized rod 7. The bending device for the glass legs is characterized in that the positive-negative rotating motor 2 drives the lead screw 6 to rotate, through the PLC 3the pressurized rod 7 on a support is enabled to bend the glass legs which is within a range prospected by the sub master pattern 4 in a fixed-time mode, and automatic reset is achieved after forming is carried out. According to the bending device for the glass legs, the problem that an error is generated when an ordinary moulding press is used for bending the glass legs in a manual mode is solved, bending degree of the glass legs is enabled to be accorded, semi-automatic control is used, and production efficiency and product quality are improved. The bending device for the glass legs can set pressure and time of bending, bending conditions are enabled to be completely identical, and the bending degree of the glass legs is identical.

A header beam couples between A-pillars of a vehicle frame. The header beam is formed from a generally straight beam segment that is extruded to have a hollow body portion with supportive legs extending within the hollow interior along the length of the beam segment, defining uninterrupted forward and rearward box sections for supporting continuous load paths on the header beam. The end portions of the beam segment are clamped and the beam segment is stretch bent to form a curvature between the end portions that remain generally straight. A front flange extends forward along the body portion and is struck proximate the end portions to form an edge that is parallel to the curvature formed between the end portions. The end portions are attached to the A-pillars and the edge of the front flange is attached to a windshield.

The invention relates to a circular orbit forming mold which comprises a bedplate, a cone frustum, a lifting mechanism, a plurality of guide pieces, a plurality of pressure columns and a plurality of spacing plates, wherein the middle of the bedplate is provided with a circular hole; the cone frustum is positioned in the circular hole; the lifting mechanism is in drive connection with the cone frustum; the spacing plates are evenly distributed on the upper side surface of the bedplate along a circumferential direction; the guide pieces are arranged on a smaller circumference relative to the spacing plates; the middle of each guide piece is provided with a guide hole; the pressure columns are arranged in the guide holes in a sliding manner; and one end of each pressure column is in contact connection with the side surface of the cone frustum. By using the multiple spacing plates and the multiple pressure columns, the invention ensures that all the parts of a circular orbit are the same in curvature, thereby ensuring that the circular orbit can meet the use requirements in use.

The invention relates to the technical field of laminated glass, in particular to laminated glass with an asymmetric thickness. The laminated glass with the asymmetric thickness comprises a thick glass plate and a thin glass plate which are subjected to brake bent forming and have different thickness, and a polymer intermittent layer which is arranged between the thick glass plate and the thin glass plate, and is characterized in that a softening-point temperature Tf1 of the thick glass plate and a softening-point temperature Tf2 of the thin glass plate satisfy the following relation: 10(15a-b+1)<=Tf2-Tf1<=15(20a-b+1), wherein equations are as shown in the description, t1 is the thickness of the thick glass plate, t2 is the thickness of the thin glass plate, R1 is infrared absorptivity ofunit thickness of the thick glass plate, R2 is infrared absorptivity of unit thickness of the thin glass plate, K1 is heat conductivity of the thick glass plate, K2 is heat conductivity of the thin glass plate, C1 is mean specific heat capacity, between a room temperature and the corresponding softening point temperature, of the thick glass plate, and C2 is mean specific heat capacity, between theroom temperature and the corresponding softening point temperature, of the thin glass plate.

The invention discloses a sliding door track assembly and a double-door cabinet using the same. The sliding door track assembly is used for slidably connecting a cabinet door and a cabinet body, and comprises two sliding door track units. Each of the sliding door track units separately comprises a slide rail and a sliding assembly, the slide rails are in a strip shape, and the sliding assemblies are slidably connected with the slide rails and can slide along the slide rails. The slide rails of the two sliding door track units are separately fixed to the upper end and the lower end of the frontside of the cabinet body in the left and right directions, and the sliding assemblies of the two sliding door track units separately extend to the front side of the cabinet body and are separately and fixedly connected with the cabinet door. Under the action of external force, the cabinet door can be slid relative to the cabinet body along the two corresponding slide rails through the two slidingassemblies to open or close an opening of the front side of the cabinet body. The sliding door track assembly and the double-door cabinet using the same are simple in structure.

The invention relates to a finishing machining method for a peach-shaped groove of a four-point contact ball bearing, and belongs to the technical field of bearing machining. A lathe bed, a grinding wheel axial moving device, a grinding wheel dresser, a product clamping device and a PLC touch screen are included. The finishing machining method comprises the steps of carrying out primary finishing on a common grinding wheel by using a diamond pen of the grinding wheel dresser, and determining that the curvature radius of the grinding wheel is completely matched with the design requirement; according to the curvature radius of a peach-shaped groove, calculating the curvature center distance of groove arcs on the two sides of the peach-shaped groove, and then determining a point Oa and a point Ob at the curvature center positions of the groove arcs on the two sides of the peach-shaped groove on the PLC touch screen; and through horizontal movement of a servo mechanism, accurately controlling the axial movement distance of the grinding wheel, and according to the equipment adjusting requirement in the primary finishing process of the grinding wheel dresser, carrying out continuous secondary segmented finishing on the shapes of the two sides of the grinding wheel to form a peach-shaped structure. The finishing machining method for the peach-shaped groove of the four-point contact ball bearing has the beneficial effects of being simple, convenient, high in precision and high in applicability.

The invention relates to a low-scattering carrier for darkroom background level evaluation test, the low-scattering carrier is in a drop shape, the low-scattering carrier is provided with a head part and a tail part which is relatively sharp relative to the head part, and the included angle [alpha] of the tail part is 10-60 degrees; the carrier is provided with an upper surface and a lower surface; the upper surface is a curved surface protruding upwards; the lower surface is a plane, and a circular connector used for being fixedly connected with a rotating top is designed in the middle of the lower surface; and the upper surface is seamlessly connected with the lower surface. According to the integrated structural design of the evaluation equipment and the support interface, the equipment and the support rotating top can be smoothly connected, the curvature of the interface is consistent, no obvious order difference or gap exists, the screw is sealed by an aluminum foil or a conductive adhesive, scattering interference of the bottom edge and the inner cavity structure of the equipment can be eliminated, which is crucial for obtaining the accuracy of darkroom background level response in a test; and after wide popularization and application, good economic benefits and social benefits can be generated.

The invention relates to a semiautomatic tube-tops die-pressing device, comprising a die-pressing device, a control device and a feeding device which is arranged on the die-pressing device. The die-pressing device comprises an upper die and a lower die for die-pressing, a horizontal iron frame is arranged between the upper die and the lower die, the feeding device comprises a workbench and a lifting bearing plate, wherein the workbench can move horizontally relative to the iron frame and is arranged on the iron frame, provided with a center hole and controlled to move by the control device; a clamping jaw is arranged at the edge of the workbench, the opening and the closing of the clamping jaw are controlled by the control device; and the lifting bearing plate is arranged at one side of the die-pressing device. In the invention, because tube-tops cloth is fixed on the workbench by utilizing the clamping jaw, the tube-tops cloth is stressed and stretched; and after the tube-tops cloth is die-pressed, a bowel-mouth line of a tube-tops is the same with a curvature of a bra cup and is substantially adhered to the bra cup.

The invention discloses a steel structure anti-collapse joint. The steel structure anti-collapse joint comprises corrugated connecting pieces, a main body structure and rod pieces fixed to the main body structure. Corrugated structures are arranged on the middle portions of the corrugated connecting pieces, one ends of the corrugated connecting pieces are fixed to the rod pieces, and the other ends of the corrugated connecting pieces are fixed to the main body structure. The steel structure anti-collapse joint has good ductility and is not prone to being damaged.

The invention discloses a traction rod bending treatment device for medical instruments. The traction rod bending treatment device comprises a workbench and a supporting top plate fixed to the side face of the workbench; the workbench is arranged in an L shape; a transversely-through groove is formed in the center of the top end face of the horizontal part of the workbench; two sets of clamping guide mechanisms are arranged on one side of the interior of the groove; a conveying mechanism is installed on the bottom wall of the groove between the two clamping guide mechanisms; a pressing mechanism is installed at the top end of the groove; a jacking mechanism is installed on the bottom wall of the groove on one side of the two clamping guide mechanisms; and two sets of first electric push rods fixed to the supporting top plate are arranged above the side, facing the clamping guide mechanisms, of the jacking mechanism. According to the traction rod bending treatment device for the medicalinstruments, automation of a traction rod bending process is achieved; the stability in the bending process is guaranteed; abrasion generated by bending is reduced; the traction rod bending treatmentdevice is suitable for bending of traction rods of different sizes; the bending application range is widened; and then the overall practicability is improved.

The invention discloses a bending steel device, which includes a workbench. A driven wheel, a driving wheel and a positioning mechanism are arranged above the workbench. The center of the driven wheel is movably connected to a connecting rod through a shaft a, and the shaft a runs through the connecting rod, the driven wheel and the The workbench is set, the center of the driving wheel is connected to the connecting rod through the shaft b, the shaft b runs through the connecting rod and the driving wheel in turn, the driving wheel and the driven wheel are meshed, and the end of the connecting rod far away from the driven wheel is connected with a rotating handle, and the driving wheel and A channel for allowing the workpiece to pass is provided between the driven wheels; the positioning mechanism includes a horizontal positioning piece a and a vertical positioning piece b, and the positioning piece a and the positioning piece b are arranged on the periphery of the driven wheel. The invention has the advantages of simple structure and guaranteed product qualified rate.

The invention relates to handle manufacturing equipment, in particular to iron pan raw material handle manufacturing equipment. According to the iron pan raw material handle manufacturing equipment, automatic extrusion can be achieved, the bending degree is consistent, and automatic discharging can be achieved. According to the technical scheme, the iron pan raw material handle manufacturing equipment comprises a base, an iron pan plate, an extrusion rod, a first extrusion plate, a bearing mechanism, a driving mechanism and a push-out mechanism; the bearing mechanism is arranged on one side of the base; the iron pan plate is placed at the upper part of the bearing mechanism; the driving mechanism is arranged in the middle of one side of the base; the first extrusion plate is arranged on one side of the driving mechanism; the push-out mechanism is arranged on one side of the base; and the extrusion rod is arranged on one side of the push-out mechanism. According to the device, the effects of automatic extrusion, consistent bending and automatic discharging can be achieved.

The invention provides a fixture special for straightening and correcting a vehicle door profile, and relates to the field of vehicle door profile machining equipment. The fixture comprises two parallel vertical plates, and an upper row of rollers and a lower row of rollers are installed between the two vertical plates, wherein the total number of the upper row of rollers is four, and the total number of the lower row of rollers is five. The upper row of rollers and the lower row of rollers are arranged in a staggered mode, the same sides of all the rollers are each coaxially provided with a gear, the adjacent rollers are transmitted through meshing of the gears, first grooves and second grooves are formed in the roller faces of the upper row of rollers, first protruding parts are arranged between the first grooves and the second grooves, third grooves and fourth grooves are formed in the roller faces of the lower row of rollers, second protruding parts are arranged between the third grooves and the fourth grooves, the upper row of rollers and the lower row of rollers are oppositely combined, the first protruding parts are inserted in the third grooves, and the second protruding parts are inserted in the second groves. The fixture can be used for straightening and correcting the formed vehicle door profile which is distorted and is not straight, the mode that the nine rollers are arranged in the two rows with the four rollers in the upper row and the five rollers in the lower row in the staggered mode is adopted, and the rollers are curved repeatedly so as to make the curvature tends to be consistent until the vehicle door profile is flat and straight.

The invention relates to the technical field of manufacturing cooling water pipes, in particular to a method for manufacturing roll cooling water pipes in multi-line slitting and rolling. The cooling water pipe can make the bending degree of the cooling water pipe consistent with the roll, and can fully fit the surface of the roll for sufficient cooling. The cooling water pipe is aligned with the standard sample to make a cooling water pipe suitable for the roll in multi-line split rolling, ensuring The distance between the cooling water pipes is the same as the distance between the rolling grooves, so that each roll can be fully cooled, making the online service life of the rolls more stable. Negative difference and line difference are easier to control.

The invention relates to a circular orbit forming mold which comprises a bedplate, a cone frustum, a lifting mechanism, a plurality of guide pieces, a plurality of pressure columns and a plurality of spacing plates, wherein the middle of the bedplate is provided with a circular hole; the cone frustum is positioned in the circular hole; the lifting mechanism is in drive connection with the cone frustum; the spacing plates are evenly distributed on the upper side surface of the bedplate along a circumferential direction; the guide pieces are arranged on a smaller circumference relative to the spacing plates; the middle of each guide piece is provided with a guide hole; the pressure columns are arranged in the guide holes in a sliding manner; a roller is arranged at one end of each pressure column in a rolling manner; a plurality of channels are evenly distributed on the side surface of the cone frustum; and the rollers are in contact connection with the channels. By using the multiple spacing plates and the multiple pressure columns, the invention ensures that all the parts of a circular orbit are the same in curvature, thereby ensuring that the circular orbit can meet the use requirements in use.