45results about How to "High precision in sizing" patented technology

The embodiment of the invention discloses a continuous casting blank sizing method and system. The method includes the steps that the withdrawing speed, controlled through a frequency converter, of withdrawing of a withdrawing and straightening machine is obtained in real time; whether a casting blank in-place signal on an original point position or a limiting position is received or not is judged; when the casting blank in-place signal is received, the withdrawing length of the withdrawing and straightening machine is calculated according to the withdrawing speed; whether the withdrawing length reaches the casting blank sizing length or not is judged; and if the withdrawing length reaches the casting blank sizing length, a cutting machine at the original point position is used for cutting a casting blank. By means of the continuous casting blank sizing method and system, the sizing precision of the casting blank is improved, and meanwhile the maintenance cost of the system is reduced.

The invention discloses a continuous casting billet laser sizing system. The continuous casting billet laser sizing system comprises a PLC unit, a laser detection unit, a display unit and a calculation unit, wherein the PLC unit controls a roller bed of a continuous casting machine and a flame cutting machine; the laser detection unit is connected with the PLC unit and is used for detecting relative positions of continuous casting billets; the display unit is connected with the PLC unit and is used for monitoring operating conditions of the whole system and allowing workers to input necessary data during debugging; the calculation unit is connected with the PLC unit and is used for converting the relative positions, detected by the laser detection unit, of end surfaces of the continuous casting billets into actual lengths of the continuous casting billets. The continuous casting billet laser sizing system has the advantages of being high in sizing precision, stable and simple in calibration, easy to install, debug, operate and maintain, low in operation cost and accurate in cutting, improves sizing rate and yield and reduces rejection rate.

The invention belongs to a tube bar blanking device for metallurgical equipment and a method, in particular to a return type specified feeding device and a specified feeding method. The return type specified feeding device at least comprises a sliding support, a feeding clamp (6) for clamping a tube bar (1) to move forwards, and a main clamp (8) between a cutting tool (9) and the feeding clamp (6). The return type specified feeding device is characterized in that a movable stub bar baffle (7) is arranged between the feeding clamp (6) and the main clamp (8), and the feeding clamp (6) is glidingly connected with a slide way (3) through a feeding clamp seat; one side at the back end of the feeding clamp seat is provided with a specified leading screw rod(5), and one side of a slide way seat is provided with a specified baffle (4) which can rotate for 90 degrees along a fixed shaft; and when the specified baffle (4) is positioned at the vertical position, the specified leading screw rod(5) is moved in a horizontal axis through the specified baffle (4). The device has high specified precision and quick speed, is easy to achieve automation, and can be applied to various tube bars.

The invention belongs to the technical field of mechanical engineering, relates to a row saw cutting device, in particular to a saw cutting device for tube rows with positioned length. The saw cutting device mainly consists of a walking rail track and a row sawmill. A positioning device body consists of a car frame, a walking driving mechanism, a locking mechanism, a walking guide mechanism, a positioning mechanism, a buffering baffle plate and a swing mechanism of the buffering baffle plate, wherein the buffering baffle plate is connected with the car frame through an auxiliary sliding hinge point; two gas-liquid buffers and a response hydraulic cylinder are arranged in the baffle plate, and the gas-liquid buffers and the head of the hydraulic cylinder are simultaneously connected with the working face of the baffle plate. The invention has the advantages of elaborate structure, simple operation, simple control, high length positioning precision and energy saving. The lumber recovery of steel tubes can be increased, and the length positioning requirement of any length can be realized. The invention can be popularized to be applied to the saw cutting or cutting device with positioned length for sectional material, bar material and the like.

The invention discloses a novel hot-rolled round steel cut-to-length system, and belongs to the technical field of mechanical engineering. The novel hot-rolled round steel cut-to-length system comprises a charging skip, a cutting frame, a supporting conveying device and guide rails. The cutting frame is hinged to one end of the charging skip, an automatic clamping mechanism and a manual supporting conveying structure are arranged at the other end of the charging skip, and the automatic clamping mechanism comprises a first clamping plate and a second clamping plate. The supporting conveying device is arranged in the discharging direction of the automatic clamping mechanism and comprises a conveying carrier roller support, a carrier roller base and carrier rollers, and a rotary encoder is installed on the carrier roller base. The cutting frame comprises a cutting saw rotation base, a first driving motor and a transmission device, a cutting saw is arranged at an opening of the cutting saw rotation base and guide wheels are arranged at the lower end of the charging skip and driven by a second motor. The novel hot-rolled round steel cut-to-length system can realize automatic control over fixed-length cutting through the combination of the driving motors, a hydraulic cylinder and the rotary encoder, and through the mobile length fixing mode of a shearing machine, the moving range is small, speed is high, cut-to-length accuracy is high and the working efficiency of the shearing machine can be obviously improved.

A wide stainless steel product cut-off device comprises a sawing trolley (1) and travelling wheels (2), wherein the sawing trolley (1) is mounted on the travelling wheels (2). The wide stainless steel product cut-off device is characterized in that guide rod supports (3) are mounted on the sawing trolley, two ends of a guide rod (4) are supported on the corresponding guide rod supports (3), a sliding sleeve (5) capable of moving back and forth on the guide rod (4) is mounted on the guide rod (4) and connected with a piston rod of a telescopic sleeve cylinder (6) mounted on the sawing trolley (1) through a connecting plate (17), a saw arm (7) is mounted on the lower portion of the sliding sleeve (5), a saw arm shaft (8) is mounted in the saw arm (7), a saw blade (9) is mounted at one end of the saw arm shaft (8), and a belt plate (10) driving the saw arm shaft (8) to rotate is mounted at the other end of the saw arm shaft (8) and connected with an output shaft of a motor (11) mounted on the upper portion of the sliding sleeve (5) through a transmission belt. The wide stainless steel product cut-off device is simple in structure, fine in precision and high in efficiency.

The invention provides a control method for sizing accuracy of a high-speed reinforcement bar straightening machine. The reinforcement bar straightening machine comprises an encoder (1), a fixed cutter (2), a moving cutter (3), an initial position signal sensor (4), a synchronous pulley (5), a synchronous belt (6), a servo motor (7), a driven wheel (8), a reinforcement bar (9), a shear box (10), adrive shaft (11), a PLC (programmable logic controller) (12), a cam (13) and a signal plate (14). With adoption of encoder sizing and servo shear, electrical control instead of mechanical control isadopted in the whole process from signal receiving to shear execution by a control system, time is basically consistent for different times of shear from signal receiving to shear execution by the control system, errors are avoided, and sizing accuracy of the reinforcement bar is improved effectively.

The invention discloses a cutting-to-length system of hot-rolled round steel and belongs to the technical field of mechanical engineering. The cutting-to-length system comprises a trolley, a cutting rack, a carrier unit and a guide rail; the cutting rack is hinged to one end of the trolley; the other end of the trolley is provided with an automatic clamping mechanism and a manual carrying structure; the automatic clamping mechanism comprises a first clamp plate and a second clamp plate; the carrier unit is disposed in a discharging direction of the automatic clamping mechanism and comprises a conveying carrier roller support, a carrier roller base and carrier rollers; the carrier roller base is provided with a photoelectric sensor; the cutting rack comprises a cutting saw rotor base, a drive motor and a transmission device; an opening of the cutting saw rotor base is provided with a cutting saw; a second hydraulic cylinder is fixed on the guide rail; the moving end of the second hydraulic cylinder is fixedly connected with the trolley. The cutting-to-length system has the advantages that cutting-to-length is automatically controlled through the combination of the hydraulic cylinders and the trolley, the length is fixed during moving, the moving range is narrow, the speed is high, length precision is high, and operating efficiency of a shearing machine is evidently improved.

A double-acceleration synchronous tracking fixed-length flying shear is composed of a first servo motor, a second servo motor, a first sliding support, a first lead screw, a second lead screw, a second sliding support, a first hydraulic cylinder, a first shear module, a second hydraulic cylinder, a second shear module, a first guide rail, a second guide rail, a third guide rail, a fourth guide rail, a third hydraulic cylinder, a first rotary encoder, a control unit and a second rotary encoder. By the adoption of the hydraulic driving method for quick acceleration and the servo motor driving lead screw method for accurate positioning, responding speed and length setting accuracy can be effectively improved. Meanwhile, due to the adoption of a hydraulic driving shear device, the size of the whole machine can be effectively reduced. By the adoption of the flying shear, fixed-length shearing of workpieces can be achieved without stopping the machine on the whole production line, working efficiency can be improved effectively, and cost can be reduced effectively.

The invention provides a method and device for realizing the arbitrary fixed-length of a steel rail. The device comprises laser range finders and pinch rollers. The laser range finders are mounted ina sectioned mode on a track on the rear side of a sawing machine according to the fixed-length setting value, and the pinch rollers are mounted on the rear side of the sawing machine and the two sidesof the steel rail. Compared with the prior art, the method and device have the beneficial effects that the steel rail is subjected to whole process fixed-length monitoring through a non-contact laserfixed-length system on line, the system conducts anti-interference recognition processing on laser data information, operation information is formed and converted into an electrical signal of the prescribed form, and the steel rail is subjected to length control through an executing mechanism. The method and device have the advantages that the non-contact mode is achieved, the fixed-length precision is high, and fixed-length changing is convenient and fast.

The invention discloses an automatic sizing, cutting and blanking device for a high-strength metal wire straightener. The device comprises a high-pressure cut-off machine, a blanking frame, a movable contact head and a fixed contact head, and further comprises a sizing pressing handle and a sizing guide frame, wherein the opening and closing of the sizing guide frame are in linkage with the high-pressure cut-off machine, the sizing guide frame opens when the high-pressure cut-off machine presses down, the sizing guide frame closes automatically when the high-pressure cut-off machine is lifted, a sensing joint is arranged in the sizing guide frame, an electromagnet is arranged under the movable contact head and connected with the sensing joint through wires, and an automatic control unit is connected between the wires. The device has the advantages of being simple in structure, low in cost, high in efficiency, automatic in sizing, cutting off and blanking, high in sizing accuracy and low in labor intensity of workers.

The invention discloses a continuous casting infrared camera shooting sizing error online continuous correction method, relates to the technical field of steelmaking continuous casting, and solves the problem that precision is poor. According to the technical key points, the continuous casting infrared camera shooting sizing error online continuous correction method comprises the following steps that an infrared camera carries out casting blank sizing cutting for the first time, and an error delta X is calculated; the vertical distance H between the infrared camera and a casting blank is measured, and scale values at the two cutting positions are marked as Ltail and L1 respectively; and after the tan alpha is changed by one unit value, the obtained scale value of a second point is recorded as L2, and the actual cutting position of the second point is recorded as L2 true = L2 +/-X1 +/-delta X/delta tan alpha. According to the actual cutting length of the continuous casting blank, an error correction value is dynamically adjusted on line, so that the measured value is closer to an actual sizing value, the sizing precision of the continuous casting blank is improved, and important support is provided for accurately controlling the length and the weight of the continuous casting blank.

The embodiment of the invention discloses a fixed size machine and an application method thereof. According to the fixed size machine, a sliding screw pair structure comprising a sliding spiral lead screw and a sliding spiral nut is adopted, the parameters of a thread, the screw pitch and the like of a sliding spiral pair are set in a matched manner, and it is guaranteed that the fixed size machine cannot move when bearing the large axial horizontal impact load, so that the fixed size accuracy is high, and the sliding screw pair has the beneficial effects of being simple in structure, stable in operation, low in noise, high in screwing accuracy, large in transmission ratio and the like. A guide device is arranged, a feeding workbench can be supported effectively through the guide device, and the situation that the fixed size machine rotates along with rotation of the sliding spiral lead screw is prevented, so that flexibility deformation is lowered; and in addition, a pneumatic device is adopted for the fixed size machine and arranged on the top face of the feeding workbench, the compactness of the fixed size machine is further guaranteed, space is saved, and the fixed size machine has the beneficial effects of being simple in structure, convenient to maintain, high in automatic control level and short in response time.

The invention provides an aluminum profile finished product saw cutting sizing device. The device comprises a rack, a traveling mechanism, a positioning mechanism and a baffle mechanism, wherein the rack is arranged on one side, in the conveying direction, of the conveying device, the traveling mechanism is used for moving on the rack in the length direction of the rack, the positioning mechanismis connected with the traveling mechanism and used for adjusting the position of the traveling mechanism and fixing the traveling mechanism and the rack through the positioning mechanism, the baffle mechanism is connected with the traveling mechanism and used for stopping a profile to be sawn and releasing the sawn profile, and meanwhile the aluminum profile fixed cutting process is provided. According to the device and the process, accurate sizing operation can be achieved, large-batch multi-time cutting can be conducted uninterruptedly, the working efficiency is improved, waste caused by inaccurate positioning is reduced, the overall structure is high in automation degree, the sizing precision is greatly improved, the operation intensity of workers is reduced, the stability and durability of the overall structure are greatly improved, and the service life of the device is prolonged.

The invention relates to the technical field of bar production, in particular to a high-precision and high-efficiency fixed-length shearing control method and device for bars. The method comprises thefollowing process flows that a first shearing device and a second shearing device are installed above a bar conveying rail, the distance between a shearing tool of the first shearing device and a shearing tool of the second shearing device is set between 9.02 m to 9.03 m; a first material blocking plate and a second material blocking plate are hinged to the front of the first shearing device andthe front of the second shearing device, touch switches are installed on the two material blocking plates correspondingly, the distance between the first material blocking plate and the shearing toolof the second shearing device is set between 9.02 m and 9.03 m, and the distance between the second material blocking plate and the shearing tool of the second shearing device is set between 12.02 m and 12.04 m. The method and the device provided by the invention have the advantages that the fixed-length shearing precision and efficiency are higher, and the production cost of enterprises is effectively reduced.

The invention discloses an efficient and accurate round steel automatic sizing system, and relates to the technical field of metal bar sizing. The method comprises the specific steps that first, machine vision distance measurement is conducted, and the length of a steel bar is measured by adopting a machine vision system; second, automatic sizing is carried out, algorithm compiling operation is designed in a C language programming environment, and the requirements for the qualification rate and the yield of sizing of a steel ball blank are met; and third, system control is performed, the related production technologies and processes include length measurement, material turning, calculation and cutting, and press breaking and alignment, and the round steel automatic sizing system is composed of a PLC unit (1), a machine vision detection unit (2), a display unit (3), a calculation unit (4), a power supply system, a production workshop logistics scheme, matters needing attention and the like. By optimizing the steel bar length measurement and steel bar automatic sizing control system, the sizing precision is high, the sizing is stable, calibration is simple, installation, debugging, operation and maintenance are easy, the operation cost is low, cutting is accurate, the sizing rate and the yield are increased, and the rejection rate is lowered.

The invention relates to the technical field of bottom side beam production and discloses a container bottom side beam and cold roll forming special-shaped beam servo tracking fixed-length cutting device. The device comprises a bottom plate. The device is characterized in that a measuring base and a cutting-off device base are supported through the bottom plate, a to-be-machined material enters from the top of the left side of the measuring base, and the material can only move forwards and backwards in the direction of the measuring base under the guiding effect of a vertical guide roller andthe correcting effect of a correcting roller machine, the material can only move back and forth along the direction of the measuring base when the material passes through the length measuring device,the length measuring device detects the length of the material, length data is converted into an electric signal to be sent to a servo motor control cutting device for cutting, a servo motor is adopted to replace an original air cylinder to follow up, the length is measured through an external encoder on the length measuring device, signals are fed back to the servo motor, the servo motor drives ahydraulic cutting-off shearing machine to walk along with materials, the cutting-off process is completed, and a purpose of high sizing precision is achieved.