18 results about "G-code" patented technology

The present application relates to the technical field of additive manufacturing online monitoring and closed-loop control, in particular to a 3D printing workpiece defect identification system based on image detection; containing coaxial acquisition, potential mapping, diffusion analysis, singular point extraction and bidirectional feedback module; the system converts the collected image stream into a virtual flow velocity vector field; the core is to simulate the evolution of the physical field by using the virtual viscosity diffusion algorithm, calculate the difference of the vector field before and after diffusion to extract the topological mutation, and generate a defect potential thermal map; based on the potential value of the thermal map, the system performs bidirectional feedback of generating G code intervention instructions and adjusting the virtual viscosity coefficient; the present application reduces the pattern recognition to local physical field simulation, without sample training, and realizes millisecond-level real-time response.

The application discloses a numerical control machine tool control method and system for complex curved surface machining, and relates to the field of numerical control machine tool control. The method comprises the following steps: extracting an original G code instruction stream, reconstructing ideal position instruction sequences and ideal speed instruction sequences of each motion shaft according to a machine tool kinematic chain model; estimating instruction phase lag amounts of each motion shaft through an inter-shaft phase lag predictor; combining geometric curvatures and tangent directions of a machining path, calculating estimated profile error vectors through a profile error coupling mapping model; combining profile accuracy requirement constraints of a surface to be machined and a shaft contribution weight matrix, and constructing a compensation optimization model; and fusing inter-shaft phase compensation instructions and the original G code instruction stream in a numerical control machining program according to a solution of the compensation optimization model, generating a synchronized instruction stream, and driving each shaft of the machine tool to move. The method solves the problems of poor synchronization of multi-shaft cooperative movement, low estimation accuracy, and low adaptability of instructions to mechanical structure characteristics of the machine tool.

The application discloses a hot-pressing dot cluster arrangement processing technology for improving the efficiency of BLU picture improvement, S1: light guide plate design, CAD software is used to draw design drawings of the light guide plate, and G code programs are exported for use of numerical control machine tools; S2: material selection and pretreatment; S3: installation and calibration; S4: according to the design requirements of the light guide plate, appropriate hot-pressing molds are designed and selected, the hot-pressing molds are divided into several independent areas, each area has different heating elements and pressure adjusting devices; S5: segmented processing, the light guide plate is divided into multiple areas, each area corresponds to different dot arrangements, different processing parameters are set in the G code programs; S6: detection and analysis. The dot cluster arrangement of the light guide plate processed by the application greatly improves the gap between clusters, so that the dot density reaches 100%, and the gap between clusters is also guaranteed to be greater than 40% of the length of the cluster dot, and the requirement of the hot-pressing equipment for transfer printing can be met.

The application discloses a numerical control program generation and simulation optimization system based on a large model, which comprises a voice recognition module for converting the voice instruction of a user into text information; a large model interaction module for automatically generating numerical control G codes compatible with target numerical control equipment through an algorithm model and / or a rule knowledge base; a simulation instruction recognition module for automatically generating corresponding simulation start instructions and operation instructions according to the numerical control G codes; a simulation environment execution module for automatically simulating, verifying and iteratively optimizing the numerical control G codes; and an optimization module for completing the iterative optimization. Through the integration of interactive voice recognition, deep learning driven large model text processing and precise automated simulation control, the application realizes the high automation of the whole numerical control programming process, improves the efficiency and accuracy of numerical control programming, and reduces the requirement for the professional knowledge of operators. The application also discloses a numerical control program generation and simulation optimization method based on the above system.

A kind of complex curve processing method of numerical control grinding machine based on curve table, comprising: obtaining user input process G code containing curve table;Load the process G code, the G code is handled according to preset rule, and executable cycle processing G code is generated;The cycle processing G code is executed, and during the execution of the G code, the functions of integrating processing trajectory, monitoring load current and G code online editing are realized.The present application defines processing cycle, sets processing parameters, generates complete processing cycle G code after superimposing the G code imported into the tool starting segment, tool retracting segment and transition path in the case of inputting complex curve process G code, under the action of monitoring module, when encountering empty cutting trajectory without processing, it can jump into the next segment of trajectory in advance, greatly improving the processing efficiency, significantly simplifying the processing flow, and can be well applied to grinding and other scenes requiring repeated multiple repeated trajectory processing.

The program editing device has a unit assigning section that assigns a unit to a machining program used for machining in a machining device, based on a G code and an argument of the G code included in the machining program, and an output section that outputs the machining program to which the unit is assigned by the unit assigning section.

This program editing device comprises: a unit imparting unit that imparts a unit to a machining program on the basis of G codes and arguments of G codes included in a machining program used for machining in a machining device; and an output unit that outputs the machining program to which the unit is imparted by the unit imparting unit.

The application discloses a polishing machine grinding head pressure control method and system associated with a track, and the method comprises the following steps: generating a target pressure associated with the track; interpolating the target pressure; and performing PID control on the measured pressure according to the interpolated target pressure. The application does not significantly increase the software load of the numerical control system, and does not need to rely on other expensive equipment. Only the machining track G code and the key point pressure value are needed to automatically plan the pressure associated with the track in the numerical control system, and then the closed-loop pressure PID control is formed through the pressure sensor, so that the continuous change of the pressure associated with the track is realized, and the application is accurate, stable, reliable, convenient to debug and optimize. The application has the advantages of wide application range, low cost, simple debugging and the like.

A kind of complex cavity class part additive-subtractive composite manufacturing multilayer machining path adaptive planning method, first STEP model analysis is carried out, the mapping between computer and STEP model and topological relationship are established;Then carry out composite machining feature identification, according to the topological relationship between STEP model entity, based on feature map and composite machining judging criterion, identify composite machining feature in STEP model, and extract each composite machining internal topological ring and boundary;Finally, multilayer machining path planning is carried out, according to the boundary of topological ring extracted, using boundary guide method, obtain each topological ring tool shaft vector, tool contact point and extended tool path, according to the layer height interval of additive-subtractive alternation surface, according to G code rule, output corresponding machining path file;The present application can realize the required multilayer, multi-axis, precision controllable non-interference machining path fast generation of additive-subtractive composite manufacturing, effectively reduce the machining preparation time and workload of additive-subtractive composite manufacturing, improve the automation degree of entire composite manufacturing process.

This invention discloses a method and system for identifying defect tool positions in five-axis CNC machining G-code, relating to the field of CNC machine tool technology. First, the tool position coordinates and rotation axis angles in the workpiece coordinate system are input into a transformation matrix to obtain the position coordinates of each feed axis control point in the machine tool coordinate system. Then, based on the specific geometric defect type, a target geometric feature sequence reflecting motion smoothness is extracted from the tool motion trajectory. Anomalies in the target geometric feature sequence are identified using the MAD method to obtain potential defect points in the tool motion trajectory. Next, the remaining tool positions are fitted to a trajectory, and the fitting error sequence from each potential defect point to the trajectory is obtained. Anomalies in the fitting error sequence are then identified using the MAD method to obtain abnormal tool positions among the potential defect points. Non-abnormal tool positions among the potential defect points are taken as defect tool positions. This invention avoids the misjudgment and omission phenomena of traditional methods, significantly improving the accuracy and reliability of defect identification.

The application belongs to the technical field of CNC engraving supervision, and specifically relates to a CNC precision engraving control system and method, which specifically comprises a plate segmentation parameter analysis module, an engraving and opening track planning module, a multi-dimensional machining state sensing module, a real-time track correction and adjustment module, and a graphical simulation machining monitoring module; the application provides a high-precision block reference for machining through the plate segmentation parameter analysis module, generates standardized G code through the engraving and opening track planning module, collects full-dimensional data and performs preprocessing through the multi-dimensional machining state sensing module, dynamically compensates position deviation, adjusts feeding speed and rate through the real-time track correction and adjustment module, and realizes visual display of tracks and parameters through the graphical simulation machining monitoring module; when an abnormality occurs, sound and light alarms are triggered, and machining is paused, so that machining precision and operation stability are greatly improved, machining waste rate and operation and maintenance cost are significantly reduced, and intelligent control of precision engraving is realized.

The application discloses an open fluid chip preparation device and method based on airflow cutting, and belongs to the technical field of microfluidics. The device comprises an air source supply module, an airflow control module, a cutting execution module, a motion and positioning module and a terminal control module. The method comprises the following steps: placing a prepared wrinkle liquid cake on the motion and positioning module, adjusting and controlling the airflow control module so that the gas flow sprayed by the cutting execution module is suitable for the current liquid cake state; converting a planar pattern of a target fluid chip into G code and inputting the G code into a control computer; running the G code through the control computer to drive the motion and positioning module to move the cutting execution module according to a preset path, airflow cutting is performed on the wrinkle liquid cake to shape the open fluid chip. The application first uses high-speed airflow as a shaping tool, realizes the automatic and programmable preparation of the open fluid chip, is compatible with various hydrophobic particle materials, is simple to operate and has strong controllability.

An NC program creation device (132, 140) is configured to create an NC program to be executed by a machine tool (1) in which cutting chips are produced during cutting of a workpiece, and includes a reception unit (132) configured to receive a selection instruction in which a cutting chip length is selected, and a creation unit (143) configured to create an NC program including a G code or an M code for performing cutting so that cutting chips of the selected cutting chip length are produced, based on the selection instruction.

The application provides a robot teaching polishing trajectory compensation method based on three-dimensional vision and digital twinning, relates to the field of robot processing, and comprises the following steps: obtaining the pre-processing point cloud and post-processing point cloud of a teaching part by using three-dimensional vision, combining the pre-processing point cloud and post-processing point cloud, performing robust registration and truncation, and extracting a processing area; combining teaching G code, robot structure parameters and a grinding wheel geometric model, replaying the teaching processing process in a digital twinning environment, and inversely obtaining the real contact point trajectory of the grinding wheel in the teaching processing process; obtaining a new part point cloud, registering the new part point cloud with the pre-processing point cloud of the teaching part to obtain a new part processing area, constructing an error field based on the new part processing area and the real contact point trajectory, segmenting and compressing the error field, and generating trajectory compensation to obtain compensation G code for new part processing. The application can significantly improve the polishing consistency and processing quality of complex curved surface parts.

The application relates to the technical field of intelligent manufacturing, and particularly relates to a trajectory planning method and device for a machine tool, equipment and a medium. The method comprises the following steps: analyzing a G code trajectory file of a numerical control machine tool to generate intermediate trajectory instructions; in a Cartesian space trajectory represented by the intermediate trajectory instructions, a direction included angle and a theoretical speed change amount are calculated according to a pose parameter and a motion parameter; according to the direction included angle and the theoretical speed change amount, trajectory points are divided into segmented points or merged points to perform trajectory segmentation and merging processing on the Cartesian space trajectory; based on the Cartesian space trajectory subjected to the trajectory segmentation and merging processing, a joint space trajectory is constructed through discrete and inverse solution processing; and machine tool control instructions are generated by performing smooth transition processing and speed planning processing on the joint space trajectory. Compared with related technologies, the problems of low machining efficiency, poor precision and large vibration of the trajectory planning method in the application of the machine tool are solved.

The application discloses a kind of integrated 3D printing methods and systems for kinematic mechanism, the method includes two parts of software generation and actual production, software generation is used to analyze the model containing kinematic mechanism to determine the position needing auxiliary printing, and add bridge support structure or adopt arch printing structure in the position needing auxiliary printing, generate G code file that can be directly used for printing;Actual production includes 3D printing according to G code file, obtains preliminary model, removes bridge support structure and obtains the printed part containing kinematic mechanism.This method replaces traditional support structure by bridge support structure, easy to remove and will not affect the mechanism movement;By arch printing method, avoid long distance hanging structure droop, avoid structure mutual adhesion in printing process.This method not only can simplify manufacturing process, reduce manual assembly, support removal and overall printing time, but also can produce complex motion structure with different deformation mode and steady control.

A kind of non-standard profile equidistance conversion method of three-dimensional five-axis laser cutting program, comprising: S100, G code is parsed;Line by line traversal reads each line instruction of G code, and the execution category of current code line is analyzed according to the identification in G code, relevant track category, feature point coordinate information and its belonging line number information are recorded;S200, track is drawn and picked up;S300, profile is intercepted;S400, profile equidistance direction is calculated;According to the information of all tracks in profile obtained by S300, first, all cutting tracks in profile are projected on plane, then the direction of profile is calculated, and equidistance direction is further determined;S500, equidistance calculation is carried out to straight line and circular arc track;S600, equidistance post-processing is carried out to straight line and straight line joint, and equidistance post-profile lead is calculated;S700, G code is rewritten;The present application can directly modify G code file, simple operation, high modification efficiency;Only local modification, without affecting other G code, stability is good.