88 results about "Tool vibration" patented technology

The invention discloses a tool fracture and fatigue intelligent detection method based on vibration signal analysis, and the method comprises the following steps: S1, installing a vibration sensor, and collecting the vibration signal of a tool in real time; s2, the collected tool vibration signals are preprocessed, and noise in the signals is removed; s3, performing time-frequency analysis on the preprocessed vibration signals, and extracting time-frequency features in the signals; s4, performing deep feature learning on the extracted time-frequency features to form deep features; s5, the depth features are classified and analyzed, and the health state of the cutter is output; s6, according to the health state optimization feature extraction and prediction result of the cutter, generating learning output; s7, evaluating the health state of the cutter in real time according to the learning output, and pushing alarm information; and S8, according to the alarm information, predicting the service life of the cutter and optimizing a cutter replacement and maintenance strategy. According to the method, short-time Fourier transform and Hough transform are combined, and the extreme learning machine is applied, so that intelligent detection on the fracture and fatigue of the cutter is realized.

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 provides a cutter adaptive control method based on artificial intelligence and an intelligent agent control system, and relates to the technical field of intelligent control processing. The method comprises the following steps: calculating a cutter vibration energy growth rate; calculating the edge weight of each connecting edge directly connected with the cutter; calculating a vibration influence degree and a vibration flow direction factor of each connecting edge in combination with the edge weight; according to the vibration influence degree, the vibration flow direction factor and the tool vibration energy growth rate, the tool abrasion condition is judged; and adjusting according to the wear condition of the cutter. By implementing the scheme, the limitation of traditional single-point monitoring is broken through, the working condition characteristics of the cutter can be accurately captured, and targeted maintenance is facilitated.

A utility vehicle for moving a material comprising a frame including a first motion detection apparatus, a work tool movably coupled with an arm, where the arm is movably coupled with the frame, a second motion detection apparatus coupled with the work tool, a vibration apparatus coupled with the work tool, and a controller in communication with the motion detection apparatus and the vibration apparatus, wherein the controller includes a processor and a memory having a work tool vibration algorithm stored thereon, wherein the processor is operatable to execute the work tool vibration algorithm to receive motion data from the motion detection apparatus, analyze the motion data to determine if the motion data represents a movement of the motion detection apparatus that drops below a threshold movement level, actuate the vibration apparatus to vibrate the work tool.

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.

A turning thread machining clamp for a diaphragm pump comprises a numerical control lathe and a chuck structure. The chuck structure comprises a clamping jaw, a mounting ring, a pressing assembly and a lifting assembly. The clamping jaw comprises a base, a first jaw part and a second jaw part. The downward pressing assembly is arranged on the first claw part and comprises a downward pressing rod and a downward pressing block. One end of the lower pressing rod is arranged at the end of the first claw part, and the other end of the lower pressing rod extends towards the second claw part. The lifting assembly comprises a lifting rod and a lifting block. Compared with the prior art, through the arrangement of the chuck structure, automatic product clamping is achieved, and the requirement of streamlined production is met. And the chuck structure is specially customized according to the specification of a product, is more adaptive to the product than a common chuck in the market, has higher rigidity and avoids cutter vibration. The chuck structure can be arranged in different sizes and replaced, is high in universality, can be compatible with products of different specifications, and is easy to maintain.

The invention discloses a large-scale machine tool cutter wear monitoring and interaction device, and relates to the technical field of machine manufacturing and control, the large-scale machine tool cutter wear monitoring and interaction device comprises a cantilever support assembly and a protection main case, and the cantilever support assembly is connected with the protection main case through a fast-assembly interface; an edge end data acquisition terminal and a man-machine interaction module are integrated in the protection main case; the edge end data acquisition terminal comprises a data acquisition module which is used for acquiring a cutter vibration signal, cutter head nearby temperature information and a main shaft current signal; the host module can calculate the state, abrasion and service life of the cutter; the numerical control system communication module obtains machining parameters in real time and issues emergency control instructions. And the man-machine interaction module performs information interaction with the edge end data acquisition terminal. Through multi-source signal fusion analysis and an intelligent early warning algorithm, real-time sensing of the state of the cutter and life prediction are achieved, the change trend of cutting of the cutter can be visually sensed, and therefore recognition and early warning prompt of cutter replacement are made.

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 kind of swing head with gravity balance structure belongs to numerical control machine tool technical field, including swing head seat and saddle, it is characterized in that, the lateral wall of swing head seat is fixedly connected with eccentric pin shaft, one side of the saddle is equipped with cylinder body and fixed pin shaft, the inside of the saddle is equipped with flange plate;The utility model has beneficial effect: by accurate balance gravity center deviation, so that cylinder body adjusts push rod telescopic by air inlet / outlet, it is assisted bearing and eccentric pin shaft's cooperation to swing head seat and applies reverse balance moment, real-time offset gravity center deviation when swing head rotates and generates eccentric load, substantially reduce the torque fluctuation of driving system, reduce tool vibration, avoid roughness change of processing surface, guarantee processing accuracy;Secondly, without through amplification drive part to cope with gravity center deviation, prolong its service life, and make swing head angle adjustment response more rapid, run more smoothly, shorten processing time.

A reinforced non-standard groove cutter relates to the field of machining equipment and comprises a cutter bar and a blade, the bottom of the cutter bar is provided with a vertically arranged assembly surface, the blade comprises a mounting plate and a cutting edge, the mounting plate is provided with a pressing plate, and the pressing plate extends from one side of the mounting plate to the direction facing the cutting surface and exceeds the cutting surface; and the extension plate is provided with a second through mounting hole and is matched with the assembly surface through a second locking screw penetrating through the second mounting hole. The pressing plate forms a new fixing point in front of the cutting face, so that torque generated in the cutting machining process is counteracted, blade rigidity is improved, tool vibration in the cutting process is reduced, the service life of a tool is prolonged, and tool cost is reduced.

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.

This invention provides a power tool. The vibratory tool has an inner housing (3), a spindle (5), a clamping shaft (61), a clamping spring (65), a clamping member (71), a collar (75), an operating handle (77), and a pressure sleeve (671). The collar (75) holds the clamping member (71) so that it can move relative to it in a vertical direction between a locked position and an unlocked position. The locked position is when the clamping member is engaged with the clamping shaft (61) in a state where it cannot move radially, and the unlocked position is when the clamping member can move radially. The operating handle (77) moves the clamping member (71) downward relative to the collar (75) and the spindle (5) in response to a predetermined release operation. The clamping member (71) moves from the locked position to the unlocked position relative to the collar (75) in response to the release operation. During the downward movement, the clamping member (71) presses down on the tip tool (91) via the pressure sleeve (671). Accordingly, the tip tool can be easily removed.

The invention provides a curved surface cutter path planning method, which comprises the following steps of: 1, automatically partitioning a curved surface to be processed, and identifying different processing regions; wherein the different processing areas comprise a simple processing area and a complex curved surface processing area; 2, determining a tool path for the simple machining area by adopting a traditional cutting tool path planning method, and planning a tool path for the complex curved surface machining area by adopting a dynamic path planning algorithm based on cutting force balance; optimizing the tool path by monitoring the tool load in real time; and 3, based on the optimized tool path, setting an intelligent algorithm to control the cutting direction and the cutting depth of the tool, and ensuring that the cutting load is kept within the optimal range every time. The curved surface to be machined is divided into the simple machining area and the complex curved surface machining area, the machining strategy is adjusted according to the geometrical shape of the workpiece and the cutter state, the cutter path is optimized, therefore, cutter vibration and deviation are reduced, and higher machining precision and surface quality are ensured.

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.

A utility vehicle for moving a material comprises a frame including a first motion detection device, a working tool movably coupled to an arm, the arm being movably coupled to the frame, a second motion detection device coupled to the working tool, a vibration device coupled to the working tool, and a controller connected to the motion detection device and the vibration device, the controller comprising a processor and a memory containing a working tool vibration algorithm, the processor being capable of the working tool vibration algorithm receiving motion data from the motion detection device, analyzing the motion data to determine whether the motion data represents a movement of the motion detection device that falls below a motion threshold level,to perform the corresponding action of the vibration device to make the work tool vibrate.

The present application belongs to the field of gas field drilling, and discloses a drilling tool vibration energy recovery power generation device. The device comprises a first connecting head, a second connecting head, an inner cylinder connected with the first connecting head and the second connecting head respectively, a piezoelectric unit and a buffer protection unit respectively sleeved on the inner cylinder, and an outer cylinder arranged on the outer periphery of the piezoelectric unit and the buffer protection unit. The piezoelectric unit and the buffer protection unit are in abutment. The buffer protection unit is configured to reciprocate in the axial direction in response to the vibration of the drilling tool, thereby driving the piezoelectric unit to generate a piezoelectric effect and output electric current. The present application can effectively recover and reuse the drilling tool vibration energy, so that the drilling tool vibration energy recovery power generation device can realize the cyclic utilization of energy during the working process.

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 application discloses a self-supply vibration rotary flexible polishing tool, which comprises a flange plate, a reciprocating vibration unit, a rack, a polishing paste pumping unit, a linear motion and rotary motion conversion joint, a hollow shaft motor and a multi-channel polishing head. The polishing paste enters the linear motion and rotary motion conversion joint through the polishing paste pumping unit, the upper end of the linear motion and rotary motion conversion joint is connected with the polishing paste pumping unit conveying hose, the tail end is connected with the hollow shaft motor, the linear motion of the polishing paste is converted into rotary motion, the hollow shaft motor drives the multi-channel polishing head to rotate, and the material of the polished part is removed. The reciprocating vibration unit controls the polishing head to perform rapid reciprocating motion, thereby realizing the vibration function. A plurality of channels are arranged in the multi-channel polishing head to ensure that the polishing paste flows out and adheres to the surface of the polished part. The polishing tool vibration frequency and the polishing paste injection amount per unit time can be adjusted, and the medium frequency error convergence speed in the polishing process can be effectively improved.

The utility model relates to the field of lathing of bearing seats, and discloses an auxiliary clamping fixture for lathing of small shafts on two sides of a bearing seat, which comprises a positioning seat, small shaft limiting pins and a fastening component, and is characterized in that a fixed shaft is arranged at one end of the positioning seat, and a clamping table top is arranged at the other end of the positioning seat; a positioning boss matched with a bearing hole of the bearing seat is arranged at the end, away from the fixing shaft, of the clamping table top, and the positioning boss meets the requirement that the axis of the small shaft and the axis of the fixing shaft are collinear after the bearing seat is installed. The small shaft limiting pin is arranged on the clamping tabletop and located between the fixing shaft and the positioning boss, a transverse open groove is formed in the top of the small shaft limiting pin, and the width of the open groove is equal to the diameter of the small shaft on the side face of the bearing seat; and the fastening assembly is used for locking the bearing seat on the positioning boss. According to the utility model, the problem that a workpiece flies out to hurt people is avoided, and the problem that the machining precision is influenced by easy generation of cutter vibration is solved.

A variable stiffness end effector assembly for a medical robotic guidance system includes an end effector support and a tool insertion device disposed within and spaced from the end effector support. The assembly further includes a coupler that couples the tool insertion device within the end effector support. The coupling includes a first mode in which the tool insertion device is rigidly coupled within the end effector support and a second mode in which the tool insertion device is conformally coupled within the end effector support.

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.