52 results about "Tool vibration" patented technology

The invention provides a numerical control machine tool cutter state monitoring method based on multi-window feature registration, and relates to the technical field of machining and intelligent manufacturing, and the method comprises the steps: firstly obtaining a cutter vibration signal, calibrating a time window according to a fixed time, defining candidate sensitive features, screening the sensitive features through a Pearson's correlation coefficient, and determining verification features; then, sensitive features are extracted according to the vibration signal of each window, feature weights are set, three process scenes of thin-wall, high-hardness and stable cutting machining are combined, and comprehensive feature values are generated through weighting after normalization processing; constructing a sliding sequence when the number of the comprehensive characteristic values reaches the number of continuous calculation windows, finally judging the initial, middle and later cutter wear stages according to the first and second state thresholds and the abnormal tolerance number, and dynamically adjusting the characteristic weight in combination with the cutter state output in the previous round and the current process scene so as to obtain the cutter wear state. And the accuracy and robustness of monitoring results in different wear stages and different processing scenes are improved.

The invention discloses a dimple speed regulation device and method based on a two-stage speed regulation valve. The dimple speed regulation device comprises an integrated set sensing switch, a wireless pilot controller, the two-stage speed regulation valve and an assembly of the two-stage speed regulation valve. According to actual working conditions on site, dimple speed adjustment of a semi-automatic drilling and dimple integrated tool or a manual dimple tool is achieved, and meanwhile dimple surface quality and hole making efficiency are guaranteed. During dimpling operation, the integrated set sensing switch of the device needs to be installed on a semi-automatic drilling and dimpling integrated tool or a manual dimpling tool, a high-speed mode is started during drilling, the device is switched to a low-speed mode according to the vibration condition of the tool during dimpling, and the dimpling rotating speed of the tool is limited; when a manual dimple tool is used for machining a composite material, the device starts the tool in a low-speed mode when a dimple drill does not make contact with a machining material, the device is switched to a high-speed mode according to the vibration condition of the tool after making contact with the material, the device is switched to the low-speed mode when a tool retracts to be separated from the material, and low-speed advancing and retreating and high-speed dimple are achieved.

The invention relates to a cutting rock-breaking mechanism and a cutting method, and the cutting rock-breaking mechanism comprises a cutter assembly which comprises a sun gear rotating around a first axis; the planet gears are arranged at intervals in the circumferential direction, and eccentric structures are arranged on the planet gears; the planet wheel mandrel is sleeved with the planet wheel and rotationally connected with the planet wheel so as to bear inertia moment and / or radial inertia force which alternately rotates around the first axis; the planet carrier is coaxial with the first axis and is fixedly connected with the planet wheel mandrel; the cutterhead frame is connected with the planet carrier; when the planet carrier alternately rotates around the first axis, the cutter head frame reciprocates along the first axis and / or alternately rotates around the first axis; when the planet carrier swings in the radial direction, the cutterhead frame swings in the radial direction in a rotating mode. And the cutter is fixedly connected with the cutter head frame and has an eccentric distance. Rock is cut and broken under the multiple actions of extrusion feeding force of the cutter, vibration impact of the cutter and radial eccentric impact rock breaking, so that the rock breaking capacity (productivity) and the rock breaking efficiency are improved, the specific energy consumption of rock breaking is reduced, and the cutter is suitable for breaking hard rock.

The utility model provides an auxiliary positioning mechanism for cutting a glass fiber plate, belongs to the technical field of glass fiber plate processing equipment, and aims to solve the problem that the cutting quality of the glass fiber plate is affected due to high-frequency vibration easily caused by vibration of a cutter and impact of cutting force during cutting in the prior art. Comprising a positioning supporting table, a first positioning module, a second positioning module, a cutting clamping table, a clamping driving cylinder, a cutting clamping mechanism and a dynamic clamping mechanism. The first positioning module is fixedly connected to the upper end of the positioning supporting table. The second positioning module is fixedly connected above the sliding table of the first positioning module; the cutting clamping table is fixedly connected to the upper end of the sliding table of the second positioning module; the clamping driving cylinder is arranged at the front end of the upper portion of the cutting clamping table. The cutting and clamping mechanism is arranged above the cutting and clamping table; the dynamic clamping mechanism is arranged at the front end of the upper portion of the cutting clamping table, local rigid support is provided nearby a cutting point all the time, vibration is restrained, and the cutting precision is improved.

The invention belongs to the technical field of milling, and discloses a milling workpiece surface topography prediction method considering multi-factor influence, which comprises the following steps: considering a tool rake angle geometric parameter, establishing a milling force model, and calculating a shear force coefficient and a tillage force coefficient; a tool vibration displacement model is established, a generalized RKN4 method is adopted, a second-order motion differential equation of the tool vibration displacement model is directly solved, and the vibration displacement solving speed is increased; establishing a workpiece deformation model, and applying a node division method to workpiece deformation calculation; and establishing a surface topography prediction model, and generating a workpiece surface topography matrix by adopting a Z-map method. According to the milling workpiece surface topography prediction method considering the multi-factor influence, the geometric parameters of the front angle are considered, and accurate prediction of the milling force is achieved; a generalized RKN4 method is adopted, so that the vibration displacement solving efficiency is improved; influences of tool vibration displacement and workpiece deformation on the surface topography are comprehensively considered, and accurate prediction of the surface topography is achieved.

The invention discloses a multi-loss joint optimization tool wear monitoring method and system and a storage medium, and belongs to the technical field of machining state monitoring, tool vibration signals are collected and preprocessed to obtain a training set and a test set, and the tool wear level of each sample is marked as a label; constructing a tetrad training set based on the training set, and training a CNN network by using the tetrad training set to obtain a feature extraction model; constructing a tool wear monitoring model based on the feature extraction model and the softmax classification layer, and training the tool wear monitoring model by adopting the training set; and predicting the wear state category of the tool based on the trained tool wear monitoring model. According to the method, a joint optimization mechanism of a tetrad loss function and a classification loss function is introduced, the minimization and maximization targets of the inter-class distance in a local embedding space are considered, the supervision constraint of global class discrimination information is reserved, the learning ability and the monitoring accuracy of the model are remarkably improved, and the method is suitable for large-scale popularization and application. The intra-class consistency and the inter-class difference of feature expression are effectively enhanced, the robustness is high, and the discrimination capability is strong.

The invention relates to the technical field of automatic control of paperboard processing equipment, and discloses an automatic control method and system of a paperboard digital grooving machine. The method comprises the following steps: synchronously acquiring a tool vibration signal and cutting force data, and performing processing and frequency domain analysis to obtain a tool wear feature vector; if the abrasion condition is met, the depth compensation amount is extracted, a servo motor position instruction is generated in combination with a proportional-integral-derivative control algorithm, and a Z-axis executing mechanism is driven to dynamically correct the cutting depth; and dynamically calibrating the compensation gain and iteratively correcting through the depth residual feedback optimization parameter until the residual is converged to the preset precision. According to the method, real-time sensing of the wear state of the cutter and accurate depth compensation are achieved, the problem that the grooving depth is unstable in traditional control is solved, the machining precision, the product consistency and the production efficiency are improved, and technical support is provided for high-precision automatic paperboard grooving production.

The invention provides a rapid alignment tool for a composite-angle pipeline piece and a machining method. Comprising a bottom plate, a profiling pressing block, a flat plate pressing block and screws. The bottom plate is fixed to a machine tool platform and can be accurately positioned through the positioning groove, the profiling groove supports the composite angle pipeline piece from the bottom, and it is guaranteed that the composite angle pipeline piece cannot deviate during machining. The profiling pressing block and the flat plate pressing block are matched with the screws to press the composite-angle pipeline piece, and the problems of cutter vibration, unstable machining, poor surface smoothness and the like in the milling process of the composite-angle pipeline piece are solved. According to the rapid aligning and machining method for the composite-angle pipeline piece, deformation generated by additive printing forming and the like can be made up, and the clamping efficiency during machining and the surface smoothness of a product are improved.

The utility model provides a steel sectional cutting device, relates to the steel cutting technology, and particularly discloses a cutting machine frame, a holder is installed on the side wall of the cutting machine frame, an installation shaft is arranged on the side wall of the holder in a rotating mode, a cutting tool is installed on the outer side wall of the installation shaft, a driving motor is installed on the other side of the holder, and the driving motor is installed on the other side of the holder. The driving motor is in transmission connection with the mounting shaft; a first position adjusting mechanism used for driving the holder to move in the extending direction of the cutting machine frame is arranged on the side wall of the cutting machine frame, a supporting structure used for supporting the free end of the mounting shaft is installed on the cutting machine frame, and a shockproof structure used for preventing the cutter from vibrating is installed on the supporting structure. Through cooperation of the first position adjusting mechanism and the driving mechanism, the cutting tool can continuously move in the extending direction of the steel, the cutting range is expanded, the requirements for one-time forming and secondary correction are reduced, and the cutting efficiency is remarkably improved.

The invention provides a drilling tool vibration measuring device which comprises a drilling tool body and a stable platform concentrically arranged in the drilling tool body through a support, a first sensor is arranged in the drilling tool body, a second sensor is arranged on the stable platform, and the first sensor is connected with the second sensor. And the stable platform is freely and rotatably connected with the drilling tool body.

A work vehicle comprising a main frame, a first sensor coupled to the work tool, a work tool movably coupled to the main frame, a second sensor coupled to the main frame, and a controller. The controller communicates with the first and second sensors and includes a processor and memory containing a work tool vibration measurement sequence algorithm. The processor is capable of executing the work tool vibration measurement sequence algorithm to determine whether the range of motion of the first sensor exceeds a threshold for excessive wear.

The invention relates to the technical field of Internet of Things control, in particular to a control method of a CNC machining center online control system based on the Internet of Things. The method comprises the following steps that a pressure sensor, a bubble detector and a first conductivity sensor are installed at a cutting fluid inlet of each CNC machining center, and a second conductivity sensor is installed at a fluid outlet of each CNC machining center; a micro-amplitude modulation signal with the unique identification frequency is superposed on the rotating speed of the main shaft, so that a tool vibrates to generate a pressure pulsation signal in a cutting fluid pipeline through a machine tool structure; after the pressure sensor detects a pressure pulsation signal, vibration source equipment is determined through spectral analysis; the sound velocity is corrected according to the bubble volume fraction measured by the bubble detector, and the propagation delay of the pressure wave is calculated. Through combination of a bubble acoustic barrier and piezoelectric active compensation, the continuous production capacity of healthy equipment is maintained while fault isolation is guaranteed.

An ultrasonic treatment tool comprises: a blade including a treatment portion, the treatment portion is configured to treat a treatment target and the blade is configured to transmit an ultrasonic vibration to the treatment portion, a pattern on at least part of an outer surface of the treatment portion, the pattern including a plurality of protrusions, each protrusion includes at least one side surface intersecting with a vibration direction of the ultrasonic vibration, the at least one side surface defining a cavitation surface, at least one cavitation surface is located within a pitch width in the vibration direction, an amplitude of the ultrasonic vibration defines the pitch width.

The utility model discloses a kind of cutter for cylinder cover thrust face processing, it is related to cylinder cover processing technical field.This kind of cutter for cylinder cover thrust face processing, including cutter main body and cutter head, the bottom of cutter main body is fixedly connected cutter head, the inside of cutter head is provided with several grooves, the circumferential bottom of cutter head is fixedly connected by fixed screw thread and install insert in the groove bottom of cutter head, the upper surface of cutter head is provided with buffer fastener, operating lever is set in groove one side top, and operating lever and fixed screw are distributed into oblique angle symmetry.The cutter for cylinder cover thrust face processing of guaranteeing this kind, through multiple limiting and buffer structure, the impact of alternating cutting force generated by tool vibration to fixed insert screw can be effectively offset, the clamping of limiting block and the rolling friction of fixed screw are matched with the clamping limiting of limiting rod, and the counterclockwise rotation trend generated by screw due to vibration can be blocked.

The invention relates to the field of mold manufacturing monitoring, in particular to a safety box mold production safety early warning method and system. The method comprises the steps that machining parameters in the mold manufacturing process are obtained, wherein the machining parameters comprise mold vibration data, tool vibration data and tool cutting force; calculating a quality safety value; and in response to the fact that the quality safety value is greater than a preset safety threshold, triggering a safety early warning mechanism. The method has the effect of improving the timeliness and the accuracy of safety early warning of the production quality of the mold.

The invention belongs to the technical field of industrial automation control, and particularly relates to an automatic zinc stripping machine monitoring method and system based on the Internet of Things, and the method comprises the steps: collecting the motor drive current, the tool vibration signal and the operation speed data of a zinc stripping machine, and carrying out the time alignment; calculating an instantaneous stripping impedance variation rate to evaluate a power abrupt change degree on a unit distance, and introducing a time weight; a high-frequency tremor coefficient is calculated to evaluate the vibration disorder degree and impact energy in the tool contact process; and constructing a nonlinear coupling stripping damage risk coefficient based on the instantaneous stripping impedance variation rate and the high-frequency tremor coefficient, and performing hierarchical control on the zinc stripping machine according to the coefficient. Through deep coupling of multi-dimensional physical characteristics, accurate monitoring of the running state of the zinc stripping machine is realized, the false alarm rate is greatly reduced, and the service life of equipment consumables is prolonged.

The application relates to the brittle material drilling technology field, and particularly discloses a brittle material electrode micro-hole processing method. The diameter of the micro-hole to be drilled is D, 0.2<=D<=1 mm. The depth of the micro-hole is H, and H:D=(20~100):1. The processing method comprises the following steps: first drilling is performed by using a first drill bit, the hole depth is h1, and the diameter is d1; h1<2d1; second drilling is performed along the direction of the first drilling by using a second drill bit, the hole depth is h2, 0.2H<h2<0.5H; the diameter of the second drill bit is d2, the effective length is l2, and 5<l2 / d2<10; |d1-d2|<0.1 mm; third drilling is performed along the direction of the second drilling by using a third drill bit, the third drilling is performed to the bottom, and a thickness of 0.3~0.5 mm is reserved; the diameter of the third drill bit is d3, and 0.02mm<=d3-d2<=0.1 mm; and the reserved layer is grinded through on both sides. The second drill bit with a smaller diameter than the third drill bit and a smaller length-diameter ratio is used for drilling, the tool vibration is small during processing, the hole does not deviate in the axial direction, the hole diameter uniformity is good, and the double-side position degree of the hole is reduced.

The invention discloses a roughness online monitoring method and system fused with a surface topography geometric simulation model, and the method comprises the steps: carrying out the online synchronous collection of a tool vibration signal in a machining process of a machine tool and the internal machining parameters of a numerical control system, and obtaining multi-source data; the collected multi-source data is subjected to preprocessing and correlation mapping, a tool cutting edge trajectory equation is established, numerical solution is carried out, and the kinematic contour of the surface of the part and the theoretical roughness value of the surface of the part are obtained. A quantitative prediction model among the machining parameters, the geometric parameters of the cutter and the surface roughness of the part is constructed; a model-data hybrid driven multi-dimensional part surface roughness machine learning prediction model is developed by combining a theoretical roughness value of a kinematic contour, processed tool vibration data and actually measured surface roughness data, and high-precision online estimation of the roughness of a machined surface is achieved. The regression model is established by means of machine learning, online monitoring of the roughness of the machined surface of the part is achieved, and the precision and generalization ability of a machine learning prediction model are improved through a physical model.

This utility model relates to the technical field of CNC machine tool accessories, specifically disclosing a vibration-damping tool mounting base for CNC machine tools. It includes a housing, a tool mounting cavity I in the middle of the housing, and a mounting hole at the bottom of mounting cavity I, which is detachably connected to the mounting end of the tool. The tool tip extends out of mounting cavity I. Several damping rings are installed within the mounting cavity, contacting the outer wall of the tool's mounting end. Several mounting cavities II are symmetrically arranged around mounting cavity I at the front end of the housing. Each mounting cavity II contains a cutting fluid nozzle. A connection hole is provided on the side wall of the housing, and a fluid channel is provided between the connection hole and the mounting cavity II. A detachable fluid inlet pipe is installed at the connection hole. This utility model, through the use of multiple vibration-damping structures including damping rings, damping block I, damping block II, and damping block III, effectively reduces tool vibration during cutting, improves machining accuracy, and extends tool life.

The utility model discloses a handheld electric forcible entry tool which comprises a drill bit body, a fixed block is fixedly connected to the side face of the drill bit body, a movable sleeve is fixedly connected to the side face of the fixed block, a movable rod is movably connected to the side face of the movable sleeve, and a spring is arranged on the outer side of the movable rod in a sleeved mode. And the other side of the movable rod is rotationally connected with an abutting head through a hinge, the side face of the abutting head is fixedly connected with a cushioning layer, and the outer side of the cushioning layer is fixedly connected with an anti-skid layer. According to the utility model, the movable sleeve and the fixed block form a floatable supporting structure, and the spring is pressed to generate an axial compression stroke of 15-25mm, so that impact energy can be effectively absorbed. Meanwhile, the cushioning layer with the thickness of 8 mm on the abutting head is made of the silica gel damping material with the shore hardness of 35 A, the cushioning effect is further enhanced, and the effective value of the vibration acceleration transmitted to the operation end is reduced to 3.2 m / s < 2 > from 8.5 m / s < 2 >. Due to the remarkable vibration reduction effect, resonance of vibration of the hands of an operator and the tool is avoided, and the holding stability is greatly improved.

The invention discloses a high-precision milling process method suitable for a complex curved surface. The high-precision milling process method comprises the following steps: carrying out streamline path design, generating a continuous tool path based on a curved surface parameter optimization direction, reducing tool lifting times, and avoiding path mutation by adopting a curved surface constraint algorithm; a five-axis positioning machining strategy is adopted, the curved surface is divided into a plurality of feature areas, cutter inclination angle machining is fixed, and linkage shaft error accumulation is avoided; implementing a cutter adaptation scheme, selecting a combination of a thermal shrinkage cutter handle and a hard alloy ball-end milling cutter, and matching a cutter coating according to the material hardness; a streamline and five-axis positioning coupling technology, a regional inclination angle database and a tool vibration suppression model are adopted, the good effects that the surface roughness Ra is smaller than or equal to 0.6 micrometer, the machining efficiency is improved by 25%, and the surface shape precision pv value is smaller than 1 micrometer are finally achieved, meanwhile, the service life of a tool is prolonged by 30%, and the debugging time is remarkably shortened.

This utility model provides a taper drill for machining tapered holes in aluminum alloy steering knuckles, comprising: a shank and a cutting edge portion connected to the shank. The cutting edge portion includes at least two cutting edges symmetrically arranged about the center line of the shank, with a chip removal groove between the two cutting edges. The cutting edge diameter increases in a stepped manner, with the diameter d1 of the cutting edge furthest from the shank being smaller than the diameter d2 of the cutting edge closest to the shank. The cutting edge diameter d1 is less than or equal to the minimum diameter D1 of the tapered hole. This taper drill for machining tapered holes in aluminum alloy steering knuckles reduces the contact area between the tool edge and the workpiece when machining tapered holes using an angled head, thereby reducing cutting resistance, minimizing tool vibration and deformation, and ultimately reducing tool wear and increasing tool life.

This disclosure relates to a method and system for predicting the surface roughness of side milling based on multi-mode superposition, including: acquiring multi-mode parameters of the cutting tool and machining parameters; determining an ideal tool tip trajectory based on the machining parameters; establishing a tool vibration response model under periodic cutting force excitation based on the principle of modal superposition and the multi-mode parameters, and calculating the vibration amplitude distribution at different heights along the tool axis; extracting the time-domain vibration response at the tool tip height as a vibration disturbance term, superimposing it onto the ideal tool tip trajectory to construct the tool tip motion trajectory; constructing a surface morphology model based on the tool tip motion trajectory to obtain the theoretical distribution law of surface roughness with the tool axial height; constructing a neural network prediction model based on the multi-mode parameters, machining parameters, and theoretical distribution law, training the model using a loss function based on the tool vibration response model, and obtaining the surface roughness prediction result of the tool. This disclosure can improve the accuracy and reliability of roughness prediction.

This invention provides a method for monitoring the condition of CNC machine tool tools based on multi-window feature registration, relating to the fields of machining and intelligent manufacturing. The invention first acquires tool vibration signals, calibrates time windows at fixed intervals, defines candidate sensitive features, and filters and determines verification features using the Pearson correlation coefficient. Then, it extracts sensitive features based on the vibration signals of each window, sets feature weights, and combines three process scenarios—thin-wall, high-hardness, and stable cutting—after normalization, generates a weighted comprehensive feature value. When the number of comprehensive feature values ​​reaches the number of consecutive calculation windows, a sliding sequence is constructed. Finally, based on the first and second state thresholds and the number of anomaly tolerances, the initial, middle, and late tool wear stages are determined. Combining the tool condition output from the previous round with the current process scenario, the feature weights are dynamically adjusted to improve the accuracy and robustness of monitoring results under different wear stages and different machining scenarios.

A method of operating a surgical system includes positioning a variable stiffness end effector assembly relative to a patient. The actuator assembly has an end effector support having a tool insertion device disposed therein. The method also includes rigidly coupling the end effector support to the tool insertion device in a first mode by forming a rigid coupling mechanism, inserting a tool into the tool insertion device, vibrating the tool insertion device with the tool, and inserting the tool into the tool insertion device in a second mode. And decouple the rigid coupling mechanism after vibration and in a second mode conformally couple the tool insertion device.

The invention relates to a wafer film sticking machine, and discloses a full-automatic wafer film sticking machine and a method thereof, and the full-automatic wafer film sticking machine comprises a rack, a carrying table, a pre-calibration table mechanism, a film sticking unit, a manipulator and a cutting tool. The carrying table is arranged on the rack and is used for storing wafers; the pre-calibration table mechanism is used for calibrating the center point and the positioning surface of the wafer or the orientation of a NOVTCH port; the film pasting unit is installed on the rack and comprises a working disc, a feeding mechanism, a front tongue plate, a waste film recycling mechanism, a rolling film pasting mechanism and a release film recycling mechanism, the front tongue plate separates a protective film into a base material film and a release film, the rolling film pasting mechanism pastes the base material film and the waste film, and the release film recycling mechanism recycles the corresponding films; the mechanical arm is installed on the rack and grabs and conveys wafers to the working disc, a cutting tool on the mechanical arm is used for cutting a base material film, and an ultrasonic generator in the mechanical arm drives the cutting tool to conduct vibration cutting. The automatic film pasting and cutting device can automatically pull a film, accurately cut the film, cooperate with automatic film feeding, waste film collection and the like, complete wafer feeding and full automation from film pasting to film cutting, improve efficiency and quality, and reduce labor cost and errors.

This invention discloses a method for identifying the grinding direction of single-crystal diamond tools based on ISOO-SVM multi-information fusion, relating to the field of ultra-precision tool manufacturing technology. The method includes: using JMD jumping mode decomposition to denoise the acquired tool vibration signal, spindle motor current signal, and acoustic emission signal; performing time-domain, frequency-domain, and time-frequency-domain analysis on the denoised feature signals to obtain feature parameters that strongly reflect the grinding direction state of the single-crystal diamond tool; and performing dimensionality reduction on these feature parameters using uniform manifold approximation and projection methods. A dynamic identification model for the grinding direction of single-crystal diamond tools is established based on a combination of an improved stellar oscillation algorithm and a support vector machine. The dimensionality-reduced feature parameters are normalized and used as input information for the dynamic identification model of the tool grinding direction, outputting the tool grinding direction state. The use of multi-information fusion identification technology allows for the acquisition of tool grinding direction state information from multiple dimensions.

This invention discloses a variable diameter tool holder and its machining system, relating to the field of machining tool technology. It includes a main tool holder structure, a rotary telescopic variable diameter mechanism, a rotary transmission mechanism, and a hydraulic clamping mechanism. It employs upper and lower double-layered staggered blades, driven by rotation to radially extend and retract, achieving small-diameter feed when contracted and large-diameter machining when expanded. Hydraulically driven upper plate lifting and lowering allows the upper and lower blades to engage and clamp, improving rigidity. The lower blades have tool positions, while the upper blades are equipped with a macro-light camera for visual tool setting. This invention solves problems such as interference, poor rigidity, tool vibration, and cumbersome assembly and disassembly in machining narrow-mouth internal cavities, significantly improving machining quality and efficiency. It is suitable for precision machining of narrow-mouth tank internal cavities on vertical lathes.

This utility model relates to the technical field of boring and milling equipment, and discloses a combined alloy boring tool for milling, including a tool holder. A limiting groove is formed on the inner side of the tool holder, and two mutually paired clamping blocks are slidably connected to the inner side of the limiting groove. A ribbed groove is formed on the outer side of the tool holder, and a through groove is formed near the bottom of the limiting groove. The through groove extends from the side of the tool holder away from the ribbed groove. A ribbed rod is inserted into the inner side of the ribbed groove, and a boring head connecting rod is fixedly connected to the side of the ribbed rod near the limiting groove. This utility model limits the boring head connecting rod by inserting the ribbed rod into the ribbed groove and by using the two clamping blocks to engage with the annular grooves from both sides. Furthermore, the positioning blocks position the positioning grooves on the boring head connecting rod, making the combination of the boring tool and the tool holder more robust and reliable, and effectively reducing the problem of tool vibration.

The invention belongs to the technical field of machine tool dynamics analysis, and particularly relates to a cutter vibration twinning method and system based on multi-data fusion. Comprising the steps that a plurality of measuring points are arranged on a rack of a machine tool, an excitation point is arranged on a cutter, sensors are evenly distributed at the measuring points and the excitation point, then the excitation point is hammered, and the equivalent mass, damping and rigidity of the measuring points and the excitation point are obtained according to vibration response signals monitored by the sensors and modal parameters of the machine tool; constructing a state-space equation corresponding to the machine tool structure according to the mass, the damping and the rigidity; the sensor at the excitation point is removed, the tool starts a machining experiment, and a vibration response signal in the machining process is obtained in real time through the sensor at the measuring point; and according to the obtained vibration response signal and the load of the cutter, the vibration signal of the cutter is reconstructed in real time in combination with a state-space equation, and twinning of cutter vibration is completed. According to the method, the response of the tool point can be obtained through reconstruction of the vibration response signals of other measuring points, and the universality is high.