9673 results about "Processing accuracy" patented technology

The invention discloses acceleration and deceleration controlling means used in numerical control machine, the concept of 'add-acceleration' is introduced against the dynamic property of the controlled member, the add-acceleration is constant in stage of acceleration and deceleration, the two physical quantities of acceleration and add-acceleration are setting; the segmented handling method of add-accelerating sections, uniform accelerating sections, decelerated accelerating sections, uniform speed sections, add-decelerating sections, uniformly-retarded sections and decelerated deceleration sections is adopted, after the interval discrimination, the real-time interpolating calculation in every interval is exceeded based on the integral relation between the add-acceleration, acceleration, speed and displacement, the S type velocity curve is formed to realize the flexible acceleration and deceleration control; the destination discrimination process is proceeded before the interpolating calculation can increase the machining precision of the acceleration and deceleration control. The method is simple, the impact is small, the speed is smooth, the machining precision is high and the flexible control can be realized.

The present invention discloses an intelligent interactive question-answering system, which includes a knowledge module used to provide information for the user to query; an interactive module used for information interaction between the system and the user; and a processing module used for searching the answering information in knowledge module according to the question of the user; the knowledge module includes a question classification base used to store the question information and a knowledge base used to store the answering information; the processing module includes a semantic analysis module used to analyze the natural language for the problem of the user to generate query conditions; an information searching module used to search in the knowledge base according to the query condition; and a result generation module used to generate answers according to the searching results. The present invention discloses a question-answering processing method of an intelligent interactive question-answering system simultaneously. The present invention provides a rapid and simple system and method for obtaining the demanded information, so as to improve the processing ability for problems and the processing accuracy.

The invention discloses a five-axis linkage laser processing machine which comprises a base (1) and a machine body (2), wherein the machine body (2) comprises an upright column module (3) and a platform module (4) which are installed on the base (1), the upright column module (3) comprises a Z-axis submodule (8) and an A-axis rotary motion module (9), the Z-axis submodule (8) is provided with a Z-axis slide carriage (46) which moves in the vertical direction, the slide carriage is provided with the A-axis rotary motion module (9), a laser head (70) is installed at the end of an A axis and rotates along with the A axis, the platform module (4) consists of an XY workbench (11) and a C-axis rotary motion module (10) installed on the workbench, a C axis is driven by a torque motor (52) and is provided with a rotary workbench (53), and a workpiece is vertically installed on the rotary workbench through a special clamp. The invention has the advantages of novel structure layout, compact size and high processing accuracy and can also greatly enhance the processing efficiency.

The efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements belongs to the field of precise optical machine technology. The polishing process includes: constituting polishing process model based on the profile data obtained through measurement with interferometer or other instrument, determining the machining path, speed, pressure and other parameters of the element under the control of computer to perform simulating machining, verifying the technological parameters based on the simulating machining results and determining the ultimate technological parameters, creating NC program and machining. The present invention has high machining efficiency and high machining precision.

The invention provides a galvanometer system correction device and a correction method thereof, and relates to the technical field of precision laser processing equipment. A honeycomb panel is arranged in the middle of the outer frame of a bearing platform, a base plate for corrective is absorbed on the honeycomb panel, and the vacuum chamber of the honeycomb panel is connected with a dust collector; a PSD sensor for measuring the actual output light spot center position of the laser of a galvanometer system is arranged on the vacuum absorption bearing platform; a CCD image acquisition device is arranged above the base plate for correcting, and then is provided with a light intensity regulating module and an image acquisition board card; and a visual measurement algorithm module is arranged. The invention can effectively inhibit the precision drift of the galvanometer system, improve the efficiency of the galvanometer system when in correction model updating and in real-time correction calculation operation, improve the automatic degree of equipment, reduce the labor intensity of an operator, greatly improve the processing precision of equipment, product quality and production efficiency, has simple structure and unique principle and method, and is particularly suitable for precision laser processing equipment to use.

The invention discloses a method for fitting and interpolating a G01 code based on a quadratic B spline curve, comprising the following steps of: by an adaptive approach selecting each characteristic point of each group of small line segment which is described by the G01 code; fitting a route which is to be processed with the quadratic B spline curve of all the characteristic points; according to the characteristic of the quadratic B spline curve and the limit of the acceleration of each driving shaft of the numerical control machine, simultaneously obtaining the maximum permissible machining velocity curve (VLC curve) of the quadratic B spline curve and the each speed key point on the VLC curve; according to the each speed key point, the control axis of the each key point, the maximum permissible machining velocity and the VLC curve, computing real machining velocity; according the real machining velocity curve and a interpolating error computing interpolating point and completing real-time interpolation. The invention has fast computing velocity, high machining precision, stable working performance and wide application range, can complete the interpolating computation of the spline curve in real time and meet digital control processing requirement of fast velocity and high precision under a premise that the preset precision of the system is met.

The invention relates to a novel method for precisely processing a titanium alloy joint prosthesis by curved-surface turbulence. The novel method comprises the steps of: structuring a constraint runner on an outer surface of the titanium alloy joint prosthesis, introducing an abrasive grain flow into the constraint runner, and grinding and polishing the outer surface of the titanium alloy joint prosthesis in a turbulence state. A special device for the method provided by the invention comprises the titanium alloy joint prosthesis, a die arrangement model of the titanium alloy joint prosthesis covers the outer surface of the titanium alloy joint prosthesis, the constraint runner is formed between the outer surface of the titanium alloy joint prosthesis and the inner surface of the die arrangement model of the titanium alloy joint prosthesis, an inlet of the constraint runner is connected with an abrasive grain flow inlet pipeline, and an outlet of the constraint runner is connected with an abrasive grain flow outlet pipeline. The special device in the invention has the beneficial effects of simple structure, easiness for design and manufacture, high processing efficiency and processing precision and uniformity in processing.

The invention provides a picosecond laser processing device for fuel nozzle microporous processing, which consists of a picosecond laser, a calibrating system and helical optical processing system. An output terminal of the picosecond laser is provided with a first reflecting mirror and the first reflecting mirror is connected with a second reflecting mirror; an output terminal of the second reflecting mirror is provided with an optical gate and an output terminal of the optical gate is connected with a beam extending lens; an output terminal of the beam extending lens is connected with a third reflecting mirror which is connected with the helical optical processing system through the calibrating system. The device is applicable to the fuel nozzle microporous processing and has the advantages of small thermal effect produced in the processing, smooth nozzle edge, no burr on the internal wall and high processing efficiency and accuracy; the diameter of the nozzle can be adjusted and the minimum is up to 60 um; the shape can be ensured to be cylindrical and the diameter depth ratio is up to 1:20, thus greatly increasing the processing accuracy and quality of the nozzle.

The embodiment of the invention discloses a control method and device for a touch operation on a mobile terminal, and the mobile terminal, and relates to the technical field of touch. The method comprises the following steps of: when a detection result shows that set application software operates, adopting a set area corresponding to the set application software to regulate a preset anti-mistaken-touch area of a touch screen, wherein the position, the shape and the area of the set area correspond to the application software which operates at present; when a touch operation input by a user is detected, judging whether the touch point corresponding to the touch operation is positioned in the set area; and labelling the touch point which is positioned in the set area and corresponds to the touch operation as an ineffective contact, and shielding the ineffective contact. By use of the embodiment of the invention, the problem that the misoperation of the user can not be adaptively prevented since an existing anti-mistaken-touch area is constant is avoided, and an effect on improving the reporting accuracy of the touch point so as to improve the processing accuracy of a touch event in the terminal can be achieved.

The invention provides a quantitive type experimental device for dynamic and static performances of a static-pressure rotary table, and belongs to the field of machinery design and manufacture. According to the experimental device, a loading device (5) and a loading arm (6) are used for changing magnitude of loads or changing oil supply pressure to control the distance between a static-pressure oil cushion (10) and a rotary table disc chuck (7), a pressure sensor (12) is used for measuring pressure in an oil cavity, an eddy current displacement sensor (11) is used for measuring the thickness of an oil film, a thermocouple temperature sensor (3) is used for measuring oil temperature, a force sensor (4) is used for obtaining magnitude of loading force, a pressure gauge a (15) on a multi-head pump at an oil inlet in the oil cavity is used for measuring pressure of the oil inlet of the oil cavity, and a pressure gauge b (16) arranged between an oil pump and the multi-head pump is used for measuring the oil supply pressure of the static-pressure rotary table. By means of the experimental device, a test of the dynamic and static performances of the static-pressure rotary table is carried out under the condition that temperature is between minus 10 DEG C and 60 DEG C and pressure is not more than 100 MPa, and the experimental device provides guarantee for solving problems in engineering, optimizing structural parameters of the rotary table, and improving machining precision of the rotary table.

The invention discloses a complex space surface on-machine quality test system, comprising a processing center, three coordinate probes and a measuring signal receiver. The processing center is used to process parts and is equipped with an open numerical control system. The probes are controlled by the numerical control system of a numerically controlled machine tool, and are used to obtain the geometrical measurement value of the discrete points on the surface of the workpiece which has been processed. The measuring signal receiver is used to receive the infrared signals sent by the probes, and transmits the signals to the numerical control system. The numerical control system transmits the measurement value signals to the computer of the user through a communication system, and controls the main shaft of the numerically controlled machine tool to stop moving at the same time. The computer of the user which is provided with a measurement control and error evaluation module is used to exchange data with the numerical control system through the communication system, and evaluates the error and gives an evaluation result based on the ideal value and measurement value of measuring points through the measurement control and error evaluation module. The complex space surface on-machine quality test system can inspect the quality of the workpiece at any moment during processing, guarantees the processing precision of the workpiece, and saves time.

The invention discloses a control method for a robot automatic spraying system. The control method of the robot automatic spraying system comprises the following steps of (1) acquiring feature data of a workpiece to be sprayed; (2) processing acquired data by using an image processing system; (3) automatically generating a track; (4) simulating; (5) controlling a user interface; (6) determining a spraying parameter; and (7) performing spraying. The control method of the robot automatic spraying system has the advantages of high automation degree, high machining precision, wide application range and the like. Different workpiece spraying tracks can be generated automatically, the operation difficulty of a user is reduced, the traditional manual programming on single different-model workpieces to be sprayed is replaced, consumed time on spraying is shortened, and the production efficiency is improved.

An off-line feed rate scheduling method of a CNC machining process includes selecting a constraint variable and inputting a reference value related to the constraint variable; estimating a cutting configuration where a maximum constraint variable value (CVV) occurs through ME Z-map modeling; receiving the estimated cutting configuration and estimating a specific rotation angle (φ_s) where the maximum constraint variable value occurs through constraint variable modeling; calculating a feed rate that satisfies the reference value of the constraint variable at the estimated specific rotation angle; and applying the calculated feed rate to the NC code. Cutting force or machined surface error may be selected as a constraint variable depending on machining conditions.

The invention relates to a helical involute gear and a processing method thereof. The helical involute gear is characterized in that a tooth surface molded line is a helical involute which is a curve spread by a rack type line straightly moving along the pitch circle tangent line and pure-rolling with a gear pitch circle. The helical involute gear has clear and easy drive principle, can ensure the drive continuity and the drive uniformity, and can realize surface meshing with large meshing area so that the bearing capacity is strong; the helical involute gear has long meshing line and large superposition coefficient, especially, an inclined helical involute conical gear is easy to implement speed reduction at high speed ratio. The helical involute conical gear can realize the expansion processing, thereby having high processing accuracy, low processing cost and high processing tooth surface hardness, improving the motion stability of the gear and the bearing capacity, and prolonging the service life. Meanwhile, processing equipment required by the helical involute gear can be conveniently processed by utilizing the method, thereby solving the difficulties of large processing difficulty and high cost of a gear drive pair with intersecting axes.

A stage main body of a wafer stage having electrostatic chuck function is sectioned into plural chucking areas with partition members. Each chucking area includes electrodes capable of changing an applied voltage, a helium supply pipe and a fluorescent thermometer. The distribution of the temperature of a wafer is grasped at real time by measuring the temperature of the wafer corresponding to the plural chucking areas. A local temperature correction for the wafer is carried out by adjusting the electrostatic chucking force in the chucking area corresponding to a necessary temperature corrective area. By achieving the temperature control within the wafer surface in this way, the equality in wafer processing, which is affected by the wafer temperature, is secured thereby eliminating the inequality in processing accuracy of the wafer processing within a wafer surface.

The invention discloses a bidirectional clamping mechanism, which comprises a base and a power mechanism. A rotating shaft of the power mechanism is connected with a screw; a first threaded part and a second threaded part are arranged on the screw at intervals; and the first threaded part and the second threaded part have the same thread pitch and opposite threaded directions. A first nut and a second nut are sleeved outside the first threaded part and the second threaded part; a first slide block and a second slide block are arranged on the first nut and the second nut respectively; and opposite clamping openings are formed on the first slide block and the second slide block. Due to the adoption of the structure, the bidirectional clamping mechanism makes the first nut and the second nut move to the middle part synchronously under the driving of the screw during work, clamps columnar workpieces through the clamping openings on the first slide block and the second slide block, keeps the consistency of the center lines of the positioned and clamped workpieces with a machining tool, and improves the machining accuracy.

The invention discloses a micro-blanking automation device of a pulsed laser driven flying sheet loading plate and a method thereof. The micro-blanking automation device comprises a laser generation system, an automatic forming system and a control system. The laser generation system is composed of a laser controller, a laser emitter and optical fiber. The automatic forming system is composed of an end cover, a focusing lens cone, a machine body, a micro-blanking working platform, a three-dimensional movable chuck, a base, a variable magnetic field device, a rotary table multi-station device, a restraint layer-flying sheet integration sheet, a restraint layer-flying sheet integration sheet storage device and a recovery device. Pulsed laser is used as a forming power source, the restraint layer-flying sheet integration sheet is used for performing transformation between optical energy and mechanical energy, and automation of a micro-blanking technology of the pulsed laser driven flying sheet loading plate is achieved. The automatic forming system is independent relatively, processing accuracy cannot be interfered by the outside, personal error is avoided, a laser optical-path and the micro-blanking working platform are accommodated in the machine body, and safety of experimental operation is improved.

The invention relates to a roll forming processing method for online punching and a production line in the technical field of sheet roll forming. The method comprises the following steps of: emptying, leveling, punching, roll forming, cutting and blanking. The punching step comprises the following specific steps of: detecting a real-time displacement signal of the linear motion of a sheet; driving a punching mechanism to move at an accelerated speed according to the displacement signal and drive the sheet to a set punching position along the movement direction of the sheet; driving the punching mechanism to track the linear motion of a coiled sheet and keep moving synchronously with the sheet; in a process of keeping synchronous movement with the sheet, allowing the punching mechanism to punch a hole at the set position on the sheet; and returning the punching mechanism to an initial position. The invention also provides the production line for implementing the method. Punching is performed after a servo motor controlled by a programmable logic controller (PLC) drives a workbench to track the sheet. The processing method and the production line can improve sheet processing accuracy and increase sheet processing speed and can be used for molding, punching and processing sheets with fixedly shaped cross sections.

The invention relates to a small straight-line section interpolation method of a numerical control system on the basis of multicycle optimal corner, comprising the following steps of: on the basis of processing precision and limitation of maximum processing speed, determining interpolation parameters of an optimal corner with multicycle trasition of each corner on a processing path according to geometric parameters at the corner on the processing path, the maximum acceleration of each driving shaft of a machine tool and an optimized target; adjusting the interpolation parameters of the optimal corner of each corner and leading the processing speed of two ends of each small straight-line section to meet reachability requirement; and then carrying out interpolation of straight line sections and corners to all the small straight-line sections on the processing path, connecting interpolate point sequences of the straight line sections with interpolate point sequences of corners, sequentially outputting the interpolate point sequences in real time, and driving a numerical control machine tool to conduct actual processing. The method can effectively improve the whole processing speed, has fast calculating speed, meets the requirement of real time processing, has stable and reliable working performance and strong practicability and can be applicable to various three-shaft numerical control machine tool with different types.

The invention provides a method for compensating precision milling deformation of a thin-wall blade. The method includes extracting blade sections perpendicular to a parameter v-direction; measuring error mean values of the various sections after the blade is machined according to an initial three-dimensional model and using the error mean values as primary compensation quantities for the sections; reconstructing a three-dimensional blade model after the various sections are primarily compensated; machining the blade according to the reconstructed three-dimensional blade model; measuring maximum error values of the various sections; computing precise deformation compensation quantities for the various sections; secondarily reconstructing a three-dimensional blade model after the various sections are compensated according to the precise deformation compensation quantities; machining the blade according to the secondarily reconstructed three-dimensional blade model; and measuring errors of the various sections to judge whether design requirements are met or not. The method is favorable for improving the machining precision of the blade and the profile tolerance of the surface of the blade and reducing compensation frequency, machining frequency and workload of follow-up working procedures.

The present invention relates to a multi-target cutting data generation algorithm and cutting parameter optimization method of a numerical control machine tool. The core algorithms of a database comprise calculation of cutting processing states such as cutting force and dynamic cutting vibration, and calculation of load conditions such as cutting power and main shaft torque, processing quality such as processing precision and surface roughness, processing efficiency information such as processing time and material removal rate and benefit assessment such as cutter wearing and production cost.Cutting parameters are optimized according to a calculation result to improve the usage rate and part processing efficiency of a machine tool. A cutting database algorithm developed aiming at a numerical control lathe and numerical control turning center is integrated on a domestic I5 intelligent numerical control system platform to allow machine tool users to conveniently call and select cuttingparameters according to concrete processing demands and to predetermine cutting effects, which are likely to generate, before actual cutting.