126 results about "Drill wear" patented technology

The invention discloses a drilling key parameter automatic regulation and control method based on an improved DDPG algorithm. The method comprises the following steps: collecting and preprocessing drilling data, and constructing a complete data set for training; a drilling speed (ROP) time sequence prediction model is constructed and trained on the basis of a self-attention mechanism (self-attention); building a simulation environment by using the trained ROP prediction model, and defining a state space, an action space and a multi-target reward function of a reinforcement learning DDPG algorithm model; a deep deterministic strategy gradient algorithm (DDPG) is adopted to train a reinforcement learning model, through an Actor-Critic network structure, an intelligent agent learns an optimal bit pressure (WOB) and rotating speed (RPM) regulation strategy in a simulation environment, and dynamic optimization of the drilling speed (ROP) is achieved. According to the method, through automatic and intelligent parameter regulation and control, the efficiency and stability of the drilling process are improved, the drill bit wear rate and the operation cost are reduced, and the method has good adaptability and multi-target optimization capacity and is suitable for drilling operation under the complex stratum condition.

The invention relates to an electric hand drill wear state prediction and health management system, which belongs to the technical field of intelligent fault diagnosis and predictive maintenance of industrial equipment, and comprises a data acquisition and preprocessing unit used for acquiring and processing a multi-modal physical signal to generate a standardized data frame; the multi-domain feature transformation unit is used for receiving the standardized data frame and transforming the standardized data frame into a health feature vector and a load feature vector; the dynamic health baseline construction unit is used for reconstructing and generating a dynamic health baseline through a depth generation model according to the time sequence of the health feature vector and the load feature vector; and the residual error sequence generation and statistical monitoring unit is used for calculating the distance between the health feature vector and the dynamic health baseline, generating a residual error sequence, and performing statistical processing on the residual error sequence to obtain a statistical magnitude. According to the invention, the interference of working condition change on health state assessment is eliminated, and pure and reliable data input is provided for subsequent accurate monitoring.

The invention relates to the technical field of printed circuit board manufacturing and quality detection, in particular to a PCB forming detection method based on a hole site scatter diagram and SPC analysis, and the method comprises the steps: collecting the actual hole site data of a PCB substrate through an optical scanner or a laser measurement device, generating a scatter diagram containing coordinates, aperture and tolerance, and carrying out the detection of the hole site scatter diagram; an abnormal region is identified by using an improved density clustering algorithm; performing multi-dimensional analysis on the scatter diagram based on an SPC model, extracting characteristic parameters such as hole site density deviation, constructing a dynamic control limit, and calculating a CPK to judge a processing state; and when the CPK is lower than a threshold value, optimization instructions such as drilling path correction and drill bit wear compensation are generated and fed back to the equipment through the anti-saturation fuzzy PID controller to realize closed-loop control. According to the method, the hole site machining quality can be accurately detected, the machining parameters are adaptively adjusted, and the PCB forming precision and the production stability are effectively improved.

The invention discloses an intelligent sidesway safety protection method and device for a magnetic drill press based on multi-parameter monitoring, and relates to the technical field of magnetic drill press control. The intelligent sidesway safety protection method and device for the magnetic drill press based on multi-parameter monitoring comprise the steps that S1, operation sensing data of the magnetic drill press are collected, and preprocessing of the operation sensing data of the magnetic drill press is completed; s2, executing magnetic drill press operation state combined judgment, completing magnetic drill press operation disturbance evaluation, judging whether a structure disturbance behavior exists or not, and generating an operation disturbance data set; s3, constructing a lateral displacement analysis basic data set, executing structure displacement trend identification, judging whether a structure lateral displacement behavior exists or not, and completing shutdown control and displacement state marking; and S4, drill bit abrasion tendency evaluation is completed, the execution unit is controlled to switch the operation state of the magnetic drill press in a linkage mode according to the evaluation result, and closed-loop intelligent maintenance control is achieved. The problems of structure lateral displacement and follow-up operation risks caused by the fact that tiny angle deviation is difficult to recognize in time after equipment stalling are solved.

The invention belongs to the technical field of drill bit supervision, and particularly relates to a drill bit wear prediction and analysis system based on a mechanical specific energy theory, which comprises a drill bit working state monitoring module, a mechanical specific energy calculation and analysis module, a rock parameter input module, a drill bit wear prediction and analysis module, a drill bit auxiliary diagnosis module and a background supervision end, the drill bit wear degree is predicted through the drill bit wear prediction analysis module in combination with the mechanical specific energy value and the physical and mechanical parameters of the current drilled rock and depending on the drill bit wear degree prediction model, the drill bit wear condition can be accurately reflected in real time, the operation efficiency is improved, and the operation safety is ensured; the drill bit waste caused by empirical judgment and regular replacement is avoided, the abnormal performance of the drill bit is subjected to auxiliary analysis when it is judged that the drill bit is not seriously abraded, the safety and stability of the drilling process are further guaranteed, the service life of the drill bit is prolonged, and the management difficulty of management personnel is remarkably reduced.

The invention provides an industrial guide rail drilling method and system. The method comprises the following steps of material pretreatment and positioning reference generation; guide rail hydraulic self-locking clamping; a reference hole laser positioning and drill bit path planning step; self-adaptive drill bit spacing adjustment is carried out; double-sided synchronous drilling and vibration suppression are achieved; integrating online burr detection and burr removal; a cutting force closed-loop control step; cooling, lubricating and self-adaptive spraying; a step of continuously discharging and automatically sorting; and predicting the service life of the cutter and replacing the cutter. The scheme has the following advantages that through the V-shaped clamping mechanism and the hydraulic compensation system, synchronous clamping of the four guide rails is achieved, and the clamping time is shortened to 2 minutes per batch; drilling units are symmetrically arranged on the guide rail up and down, double-face hole group machining is completed at a time, and 0.08 mm average positioning deviation caused by the overturning procedure is eliminated; the integrated acoustic emission sensor monitors the abrasion state of the drill bit in real time, when the cutting force fluctuation is larger than 15%, the feeding amount is automatically compensated, and the rejection rate is reduced to 1.5% from 12%.

The invention discloses a modular drill carriage and method capable of rapidly detecting rock mass strength parameters, and relates to the technical field of geotechnical engineering investigation, and the modular drill carriage comprises a continuous drilling subsystem used for drilling field surrounding rock; the hydraulic loading subsystem is used for providing drilling power for the continuous drilling subsystem; the self-positioning subsystem is used for controlling the continuous drilling subsystem to drill at different angles and different heights; and the remote control monitoring subsystem is used for collecting the while-drilling parameters, and after the while-drilling parameters are corrected according to the defined drill bit wear degree coefficient, the rock mass hardness prediction model is adopted to obtain a rock mass hardness prediction value. On-site surrounding rock drilling in all directions and in a high-low position mode under different geological conditions is achieved, meanwhile, while-drilling parameters in the drilling process are monitored and analyzed in real time, and prediction of the accurate value of rock mass hardness under the in-situ condition is achieved.

The utility model relates to the technical field of tempered glass processing, in particular to a synchronous water spraying device for tempered glass trepanning processing. The technical problems that according to an existing trepanning machining device, a special drill bit is usually adopted for completing trepanning operation, due to the fact that tempered glass is high in hardness, a large amount of heat can be generated during drilling, a transmission pipe cannot synchronously spray cooling liquid along with the drill bit in time for cooling and heat dissipation, the drill bit can be possibly overheated, and abrasion of the drill bit is aggravated are solved. The drill bit is deformed or fractured, and the product quality is influenced. According to the technical scheme, the synchronous water spraying device for tempered glass trepanning machining comprises a workbench, a machining assembly, a conveying assembly and a positioning assembly. The spraying pipe synchronously sprays water and cools along with drilling of the drill bit, the surface temperature of drilled glass can be rapidly reduced in time, thermal expansion and thermal stress are reduced, glass burst is prevented, the drilling speed is increased, meanwhile, water flow can keep the surface of the glass in a wet state, and glass fragments are reduced.

The invention provides a circuit board production quality prediction and evaluation method based on big data, and the method comprises the steps: building an initial data set through collecting the historical data and real-time operation state of a drill bit in a circuit board processing process, and extracting the wear degree characteristics of the drill bit; the method comprises the following steps: acquiring current production data through a suggestion signal for replacing a drill bit, acquiring and combining time prediction of accumulated use times of the drill bit to reach a life node, and determining an optimal replacement opportunity for immediately replacing the drill bit after the current production batch is completed; acquiring machining data of a new replaced drill bit according to the optimal replacement opportunity of the replaced drill bit, and generating an updated through hole quality influence prediction result; and according to the updated through hole quality influence prediction result, adjusting the vibration frequency change of the drill bit, the collection frequency of residual chip accumulation in the hole and the analysis depth of the hole wall smoothness score, and obtaining the latest circuit board quality evaluation data.

The utility model discloses a millimeter wave deep well drilling platform, which belongs to the technical field of drilling equipment and comprises a drilling machine, a drilling rod and a gyrotron, the drilling machine and the gyrotron are arranged above the ground surface, one end of the drilling rod is connected with a drilling winch on the drilling machine, and the other end of the drilling rod extends into the ground from a drilling well. The drill rod comprises a drill rod shell and a waveguide tube in the drill rod shell, one end of the waveguide tube is communicated with the waveguide collector, the other end of the waveguide tube is provided with an opening and extends into the ground along with a drill bit of the drill rod, and the gyrotron is provided with a dynamic waveguide and movably connected with the waveguide collector through the dynamic waveguide. The dynamic waveguide comprises a waveguide leading-in pipe, a tail pipe and a plurality of groups of waveguide transmission pipes which are connected in sequence, and a plurality of millimeter wave reflection devices are arranged in the dynamic waveguide. Millimeter wave drilling is utilized, the problems of drill bit abrasion, replacement and the like in traditional drilling are solved through millimeter wave drill bit drilling, and the drilling cost is reduced.

Some implementations include a method which comprises determining a drilling efficiency of a drill bit at a first depth in a wellbore formed in a subsurface formation based, at least in part, on a bit wear level of the drill bit, determining a cutting force mechanical specific energy of the drill bit at the first depth, and determining a rock strength of the subsurface formation at the first depth based on the drilling efficiency and the cutting force mechanical specific energy of the drill bit.

The invention relates to the technical field of drilling equipment control, in particular to drilling equipment for road and bridge construction and a control method of the drilling equipment. The control method comprises the steps that all torque time sequence segments corresponding to the drilling equipment are obtained; according to the clustering cluster data features and the extreme value difference features corresponding to all the torque time sequence segments, the geological condition change severity degree is determined by combining the change features of the geological conditions along with time during drilling; according to each component of each torque time sequence segment, analyzing the increase condition and the sudden increase condition of drill bit wear, and determining the non-uniform degree of drill bit wear; acquiring a characteristic value of a drill bit wear component, and determining a potential risk index in combination with the geological condition change severity and the drill bit wear unevenness; the control instruction of the drilling equipment for road and bridge construction is output according to the potential risk indexes of all the torque time sequence segments, the control strategy can be rapidly adjusted, the potential risk problem is avoided, and the control precision of the drilling equipment for road and bridge construction is improved.

The invention discloses a multifunctional geological survey sampling device suitable for a complex stratum, and relates to the technical field of geological engineering. Reinforcing mechanisms are installed on the two sides of the top end of the base, a drilling mechanism is jointly installed between the upper portions of the outer surfaces of the two reinforcing mechanisms, and an environment monitoring mechanism is installed on the front side of the top end of the base. Through cooperative work of the lifting plate, the drilling driving assembly, the drilling rod, the drilling blades and the drilling bit, the problems that when sampling is carried out in a complex stratum, drill jamming is likely to happen, the drill bit is abraded fast, and the drilling efficiency is low are effectively solved, through the combined type drilling bit integrating the fixed blades and the cones, the working modes can be flexibly switched, and the sampling efficiency is improved. The pressure sensor embedded in the drilling bit can feed back stratum hardness information in real time and automatically adjust drilling parameters, manual intervention is reduced, drilling efficiency and accuracy are improved, and cost is reduced.

A cylindrical metal workpiece drilling system based on machine vision comprises a conveying device, a jacking, rotating and clamping device and a drilling device, and the conveying device and the jacking, rotating and clamping device are arranged in a crossed mode in space and used for directly conveying a workpiece to a station of the jacking, rotating and clamping device at a time; the jacking and rotating clamping device is used for executing a jacking action to enable the workpiece to be separated from a conveying surface after the workpiece is in place through the conveying device, and driving the workpiece to be accurately positioned in the circumferential direction and reliably clamped according to coordinate information provided by the drilling device; the drilling device is used for automatically recognizing and positioning the plane coordinates of the prefabricated holes, conducting redundancy confirmation on recognition accuracy, executing drilling depth parameter compensation and meanwhile providing hole position mechanical limiting redundancy protection. The problems that workpieces need to be carried and positioned for multiple times, hole site recognition automation and reliability are insufficient, and the drilling depth control precision is poor due to size errors and drill bit abrasion can be effectively solved, and the reliability and safety of equipment are remarkably improved.

A method of monitoring the wear of a drill bit of a drilling system is provided. The method includes drilling into a formation using the drill bit of the drilling system, obtaining a weight-on-bit (“WOB”) from sensors of the drilling system, and obtaining a torque-on-bit (“TOB”) from the sensors of the drilling system. A bit damage indicator (“BDI”) is determined that is correlated with the wear of the drill bit based on a relationship between the WOB and the TOB.

The embodiment of the invention provides a PDC drill bit abrasion evaluation method, device and equipment, and the method comprises the steps that real-time logging data of a PDC drill bit are obtained, and the real-time logging data comprise the drill bit rotating speed, the mechanical drilling speed and the drilling pressure; determining abrasion indexes of the PDC drill bit according to the drill bit rotating speed, the mechanical drilling speed and the drilling pressure; and determining the current wear degree of the PDC drill bit according to the wear index of the PDC drill bit. Based on the real-time logging data, real-time quantitative evaluation of the abrasion degree of the PDC drill bit is achieved, a scientific basis is provided for drill bit parameter adjustment and drill bit replacement, then the drilling cost can be reduced, and the drilling period can be shortened.

The invention is suitable for the technical field of drilling platforms, and provides an intelligent comprehensive management method and system for a drilling platform, and the method comprises the following steps: collecting drilling platform information based on the Internet of Things, the drilling platform information comprising drilling parameters, geological parameters and wellbore internal environment parameters; constructing a speculation model based on a machine learning algorithm and historical drilling data, wherein the historical drilling data comprises drilling parameters, geological parameters and wellbore internal environment parameters; drilling platform information is input into the speculation model, and speculation results of the change trend of the internal environment of a shaft, drill bit abrasion data and the drilling speed are obtained; and determining an objective function according to the speculation result, performing iterative optimization on the drilling parameters in the drilling platform information through an optimization algorithm to obtain an optimal objective function, and determining optimal drilling parameters. According to the method, intelligent adjustment of the drilling parameters is achieved, the drilling efficiency is improved, the cost is reduced, and risks and uncertainty in the drilling process are remarkably reduced.

The invention relates to a drill bit wear prediction method based on physical constraint WGAN-GP and CNN-BiLSTM, and aims to realize real-time prediction of drill bit wear through an intelligent means. According to the method, drilling parameters collected on site are utilized, a physical model is fitted through a BP neural network, and a physical constraint module of a WGAN-GP generator is constructed to generate high-quality drilling data conforming to actual working conditions. And after verification of the generated data, combining the generated data with real data to form a complete data set. And then, a hybrid model combining a convolutional neural network (CNN) and a bidirectional long-short-term memory network (BiLSTM) with a multi-head attention mechanism is designed, spatial-temporal characteristics of drilling parameters are fully extracted, and classified prediction of the wear degree of the drill bit is realized. According to the method, the problem of insufficient field data is solved, the prediction accuracy is remarkably improved, the wear degree of the drill bit is predicted in advance, unnecessary premature replacement is avoided, the comprehensive cost of drilling operation is remarkably reduced, and the method has wide industrial application value.

An earth-boring tool system may include a drill string including at least one drilling tool. The earth-boring tool system may also include at least one processor and at least one non-transitory computer-readable storage medium storing instructions to cause the earth-boring tool system to receive first drilling environment data, train an operational drilling model based, at least in part, on the first drilling environment data and a reward function defining one or more rewards or punishments based, at least in part, on one or more drilling parameters including bit wear, rate of penetration (ROP), Stick Slip, cutter durability, or a reference baseline drilling policy, receive second drilling environment data, and determine, via the operational drilling model, one or more first actions based on the second drilling information data, the one or more first actions configured to change one or more operating parameters of the earth-boring tool system.

The invention belongs to the technical field of oil and gas drilling, and particularly relates to a mechanical drilling speed prediction method based on mechanism-deep learning and a hybrid model updating strategy. The method comprises the steps that 1, a mechanical drilling speed prediction mechanism model considering PDC drill bit abrasion and the bottom hole temperature is established; 2, establishing a deep learning model architecture; 3, creating a hybrid mechanical drilling speed prediction model through the WT model and the CAG model; 4, establishing a model hybrid updating strategy combining regular full-amount updating and real-time incremental updating; 5, the drilling speed prediction model is updated according to the mixed model updating strategy for the drilling parameters obtained during drilling; and step 6. And according to the drilling parameters obtained at the current moment, inputting the updated mechanical drilling speed prediction model so as to successfully predict the drilling speed at the next moment. According to the method, transient changes of complex working conditions in the drilling process can be captured easily, the drilling period can be shortened easily, the drilling cost can be reduced, and intelligent regulation and control of the drilling process can be assisted.

The utility model relates to the technical field of oil exploration drilling equipment, in particular to oil exploration drilling equipment with a drill bit convenient to replace, which comprises a base, a fixing nail, a hydraulic rod, a connecting cylinder, a driving motor, a connecting rod, a fixing cylinder, a fixing seat and an excavating drill bit. Multiple sets of fixing nails are arranged at the bottom of the outer side of the base, a hydraulic rod is arranged on the inner side of the upper portion of the base, a connecting cylinder is arranged at the bottom of the hydraulic rod, a driving motor is arranged in the connecting cylinder, a connecting rod is arranged at the bottom of the connecting cylinder, a fixing cylinder is arranged at the bottom of the connecting rod, and a fixing base is arranged at the bottom of the fixing cylinder. Excavating drill bits are arranged at the bottom of the fixed seat; by adding the structure convenient to disassemble and assemble, the drill bit can be quickly disassembled for replacement when drill bits with different diameters need to be replaced or the drill bit is damaged, meanwhile, the drill bit with the replaceable excavating part is used, only parts at the excavating part are replaced when the drill bit is abraded, equipment needing to be carried is reduced, and the cost is reduced. And the practical value of the device is increased.

This invention belongs to the field of oil and gas drilling technology, specifically relating to a PDC drill bit with automatically updating composite cutting discs. It aims to solve the problem of existing drill bits requiring tripping and bit replacement when drilling speed decreases due to tooth wear, thus affecting drilling efficiency. The PDC drill bit with automatically updating composite cutting discs includes a drill bit body, a mounting groove on the drill bit body, and multiple cutting discs arranged side-by-side in the mounting groove. Below the mounting groove is a longitudinally extending output channel communicating with the mounting groove, and adjacent cutting discs are connected in the output channel by a tenon and mortise structure. It also includes a drive device located at the bottom of the drill bit body. During normal drill bit operation, the drive device is pressurized and stores power; when the drill bit is lifted, the drive device applies a downward pulling force to the cutting discs to move them downwards. This PDC drill bit can automatically update the cutting discs during drilling, to a certain extent avoiding tripping due to drill bit wear and improving production efficiency.

This invention discloses a method and apparatus for drill bit wear detection and remaining life prediction. The method includes: acquiring multimodal data of the drill bit; performing time-series alignment of the multimodal data using a dynamic time warping algorithm; inputting the time-series aligned multimodal data of the drill bit into an intelligent analysis center and outputting the remaining life prediction result of the target drill bit; using a visual prediction model to segment the wear region of the target drill bit; using a dynamic rating algorithm to classify the wear region; and using a digital twin simulation model, which is a multi-scale simulation system driven by digital twin simulation technology based on wear region segmentation results, classification results, real-time point cloud data of the target drill bit, and real-time sensor data, which can improve the detection accuracy, real-time performance, model generalization, and life prediction capability of drill bit wear.

The invention relates to the technical field of mine drilling, in particular to an energy-saving hole collapse prevention drilling tool. Comprising a driving part, a cylinder and a sealing part, the driving part and the sealing part are in threaded connection with the two ends of the cylinder respectively, a gear ring is rotationally connected into the cylinder, an output shaft of the driving part is rotationally connected with a planet carrier and fixedly connected with a sun gear, and the planet carrier is rotationally connected with a planet gear meshed with the gear ring and the sun gear; the planet carrier is provided with a power shaft which is in limiting sealing sliding and rotating connection with the sealing piece, and the power shaft is fixedly connected with a connecting piece used for installing a drill bit. Working modes are automatically switched according to the torque borne by the power bearing, high-speed rotation is adopted in a soft soil layer, the drilling efficiency is improved, and the drill bit abrasion and hole collapse risks are reduced; and the hard rock stratum is converted into low-speed rotation to be combined with axial impact, the rock breaking capacity is enhanced, the drilling speed is maintained, meanwhile, light weight, miniaturization and low-cost manufacturing of equipment are achieved, and therefore the overall mass of the drilling tool is reduced, the number of power sources is reduced, and drilling energy consumption is reduced.

The coring bit for geological exploration comprises an upper connecting base, an upper caulking groove, a mounting groove and a coring cavity, the upper caulking groove is formed in the upper end of the upper connecting base, a connecting rotating head is arranged in the upper caulking groove, a plurality of sets of inner fixing holes are formed in the outer side of the upper end of the upper connecting base, a shell is arranged at the lower end of the upper connecting base, and a coring hole is formed in the shell. Compared with the prior art, the main shaft rod has the advantages that the upper connecting base and the outer shell are used for protecting the connecting rotating head, the meshing fluted disc and the driven fluted disc, the connecting rotating head, the main shaft rod and the driving meshing teeth are used for driving the side shaft rod and the main shaft rod to rotate synchronously, and therefore the main shaft rod can rotate synchronously. The main shaft rod is used for driving the main drill bit to rotate on the inner side of the inner tooth pressing sleeve, the outer auxiliary drill bit is used for conducting synchronous drilling on the outer side of the main drill bit so as to reduce the abrasion degree of the main drill bit, and the inner drill bit is rapidly replaced by using the mounting groove and the multiple sets of bolts.

The invention relates to the technical field of down-the-hole drill ball tooth drill bit wear measurement, in particular to a down-the-hole drill ball tooth drill bit wear value real-time measurement method and system, and the method comprises the steps: carrying out the optimization and registration of an initial three-dimensional model, and obtaining an overall wear quantized value of a down-the-hole drill ball tooth drill bit; analyzing a mapping relation between the while-drilling parameters and the overall wear quantized value, and constructing a database between the while-drilling parameters and the drill bit wear value; deriving a dimensionless variable according to a dimensional analysis method and a database, and performing combined screening on the dimensionless variable, a second-order polynomial and a cross term to determine a dimensionless variable combination influenced by drill bit wear; and substituting the dimensionless variable combination into the multiple linear regression model to establish a mathematical relationship model between the drill bit wear and the while-drilling parameters, thereby realizing the real-time measurement of the wear value of the ball tooth drill bit of the down-the-hole drill. According to the method, non-dimensional variables of the while-drilling parameters are obtained based on dimensional analysis, the model is built in combination with multiple linear regression, the wear value of the ball tooth drill bit of the down-the-hole drill is measured in real time, and construction efficiency and safety are improved.

The invention discloses an electric spark drilling system which comprises a main shaft piece arranged on a feeding system of a machine tool, the main shaft piece comprises a main shaft seat and a power piece, the main shaft seat is arranged on the feeding system, and the power piece provides drilling power on the main shaft seat; the spark drilling part is arranged on the main shaft part and comprises a drill bit part, a spark impact part and a uniform drilling part, the drill bit part is arranged on the main shaft seat in a circumferential rotating and axial sliding mode and is in transmission connection with the power part, and the spark impact part is arranged on the main shaft seat and is connected with the drill bit part. And the uniform drilling part is used for providing power for axial vibration impact of the drill bit part, and is in transmission connection with the main shaft part, the drill bit part and the spark impact part at the same time so as to drive the spark impact part to rotate slowly and stably. The drill bit is reasonable in structural design, high in drilling efficiency, low in drill bit wear rate and high in drilling quality.

The invention discloses a five-wing flat-top nine-tooth anti-tuberculosis drill bit, comprising a drill bit base, a base connecting part, a drill bit body connecting part and drill bit teeth, wherein the drill bit teeth are divided into an external cutting group and an internal cutting group; the drill bit teeth of the external cutting group are symmetrically arranged into five, namely a first cutting head, a second cutting head, a third cutting head, a fourth cutting head and a fifth cutting head, and a drill bit body connecting part is arranged between the drill bit teeth and the base connecting part; the drill bit teeth of the internal cutting group are embedded in the drill bit base, and the drill bit teeth of the internal cutting group include four drill bit teeth, namely a sixth cutting head, a seventh cutting head, an eighth cutting head and a ninth cutting head; the problem that when mining a high-gas mine, the rock hardness is high, the drill bit is severely worn and it is difficult to drill during the drilling process is solved.

This invention relates to the technical field of printed circuit board manufacturing and quality inspection, particularly a PCB molding inspection method based on hole location scatter plots and SPC analysis. Actual hole location data for a PCB substrate is collected using an optical scanner or laser measurement device, generating a scatter plot containing coordinates, hole diameters, and tolerances. An improved density clustering algorithm is then used to identify abnormal areas. The scatter plot is then subjected to multi-dimensional analysis based on an SPC model, extracting characteristic parameters such as hole density deviation. Dynamic control limits are then established, and CPK (Computer Program Key) (CPK) is calculated to determine the machining status. When CPK falls below a threshold, optimization instructions such as drilling path correction and drill wear compensation are generated. These instructions are fed back to the equipment via an anti-saturation fuzzy PID controller to achieve closed-loop control. This method accurately detects hole machining quality, adaptively adjusts machining parameters, and effectively improves PCB molding accuracy and production stability.

The utility model discloses PCB model hole drilling equipment, and relates to the technical field of drilling equipment. The PCB model hole drilling equipment comprises a mechanical arm body, a movable table is movably connected to the mechanical arm body in a clamped mode, a first drilling machine and a second drilling machine are arranged on the movable table, a first rack is arranged on the first drilling machine, a second rack is arranged on the second drilling machine, and a first supporting base and a second supporting base are fixedly connected to the movable table; a gear is rotationally connected between the first supporting base and the second supporting base, and a driving assembly is arranged on the movable table. According to the PCB model hole drilling machine, a large and small hole drilling machine can be conveniently arranged at the drilling position end of the mechanical arm body, therefore, when a model recognition hole is drilled, model hole design is optimized, an Arabic numeral model hole drilling mode is changed into a large and small hole drilling mode, a small hole is used for representing a first number, a large hole is used for representing a fifth number, and therefore the number of drilled holes is reduced; drilling speed is increased, and drill bit abrasion is reduced.