3427 results about "Tool holder" patented technology

The invention relates to the technical field of mechanical detection, in particular to an intelligent tool setting control method and system, and the method comprises the steps: collecting burr morphology data and tool state parameters of a slitting edge; establishing a mapping relationship between burr generation and processing parameters based on a process DOE model, wherein the process DOE model is used for extracting a key factor set influencing the slitting quality; when the real-time monitoring value of the key factor set deviates from the optimization interval of the process DOE model, generating a position and posture compensation instruction of the slitting tool rest; iteratively updating the key factor weight distribution of the process DOE model; and when the variance of the key factor weight distribution is converged to a preset threshold value, determining that the tool setting control closed-loop optimization is completed. According to the method, the defects of dynamic response hysteresis and insufficient compensation precision in traditional tool setting control are effectively overcome, and closed-loop self-optimization control of the position and posture of the slitting tool rest-process parameters-burr suppression is constructed through a three-dimensional dynamic compensation mechanism of real-time fusion of multi-source sensing data.

The invention relates to the technical field of milling cutters, in particular to a multi-tooth micro-blade milling cutter and a manufacturing method and application thereof. The multi-tooth micro-blade milling cutter comprises a cutter handle and a cutter head body, wherein the cutter head body is fixedly connected to one end of the cutter handle; the multiple cutter teeth are arranged on the outer side face of the cutter head body, and each cutter tooth extends to the tail end, close to the cutter handle, of the cutter head body from the top end, away from the cutter handle, of the cutter head body; each cutter tooth comprises a front cutter face, a rear cutter face and a cutting edge, the cutting edge is provided with a plurality of continuously-distributed micron-sized protruding micro-blades, the micro-blades form an arc-shaped sawtooth structure, the micro-blades extend to the front cutter faces and form micro grooves in the front cutter faces, the micro-blades extend to the front cutter faces and form micro grooves in the front cutter faces, and the micro-blades extend to the rear cutter faces and form micro grooves in the front cutter faces. The multi-tooth micro-blade milling cutter has the structure of the front angle of the front cutter face of the milling cutter tooth and the rear angle of the rear cutter face of the milling cutter tooth, the linear cutting blade of the traditional cutter tooth is dispersed into micro blades, the stress concentration of the cutter is reduced, a plurality of convex micro blades are in grinding motion on the machining face in the milling process, and the milling and grinding combined machining effect is formed. Unification of machining efficiency and machining precision is achieved.

The invention discloses a milling process vibration state monitoring method and system for a machine tool milling cutter, and belongs to the technical field of intelligent monitoring. The method comprises the following steps: acquiring a vibration signal of a milling cutter under a reference processing condition, and establishing a reference template containing normal vibration characteristics; dynamically adjusting an alarm threshold value, and starting fault diagnosis analysis; performing envelope spectrum analysis on the vibration signal triggering diagnosis; preliminarily judging the affiliation fault type of the abnormal vibration through a preset fault classification model; and carrying out association verification by combining the attribution fault type and the spatial position information when the abnormality occurs, confirming the root cause of the fault, and outputting a targeted classification alarm instruction. According to the invention, the cutter handle single sensor is linked with phase slicing and dynamic threshold and coordinate verification, so that the faults of the cutter, the cutter rest and the workpiece are accurately distinguished and directionally alarmed, and the problems that a fault source cannot be distinguished by a single channel and the false alarm rate is high in the prior art are solved.

The invention provides a self-locking heavy-load cutter sleeve, and belongs to the field of numerical control machine tool machining. The expansion cap is slidably connected with the shell, an inclined part and spring plungers are arranged at one end of the expansion cap, the multiple spring plungers and centering blocks are arranged on the side wall of the shell in a circumferential array mode, the head of each spring plunger penetrates through the shell to abut against the corresponding centering block, and each centering block can slide in the radial direction of the shell; each centering block comprises a connecting block and a centering block, wherein the head of each spring plunger is connected with one connecting block; the positioning plate is arranged on one side of the connecting block, and a transition slope surface is arranged on the bottom surface of the positioning plate; during working, each connecting block abuts against the outer surface of the corresponding inclined part. The problem that in the prior art, a cutter sleeve bears heavy loads and is prone to disengagement is solved. The technical effect is that the cutter is ensured to be stably loaded on the cutter sleeve.

The invention discloses a double-station circuit board beveling machine, and relates to the technical field of circuit board processing equipment.The double-station circuit board beveling machine comprises a first base and a first tool apron, and the first tool apron is supported on the first base through a tool apron displacement assembly; the tool apron displacement assembly comprises a first left-right translation module, a first height adjusting module and two first front-back displacement modules which are symmetrically arranged, and the first left-right translation module and the first height adjusting module drive the two first tool aprons to integrally displace in the Y-axis direction and the Z-axis direction; each first front-back displacement module can independently drive a first worm and gear rotation device to move in the Y-axis direction, the first worm and gear rotation device rotates the angle of a first tool apron, angle adjustment is completed, a double-tool-apron structure which is symmetrically arranged up and down can synchronously cut the upper edge and the lower edge of a circuit board at the same time, and a three-axis movement system is matched, so that the machining efficiency is improved. And a worm and gear angle adjusting mechanism is combined, so that positioning is more accurate, and precision is higher.

A tool holder rail and a tool holder including the same are provided, wherein the tool holder rail includes: an elongate main body extending in a longitudinal direction and including two mounting sides extending in the longitudinal direction, the two mounting sides being inclined to each other with an included angle therebetween; and two rail slots disposed on the two mounting sides, respectively, each of the two rail slots including two flanges extending in the longitudinal direction and toward each other, each of the two rail slots being configured for slidable engagement of a tool seat.

The invention discloses a numerical control machine tool power tool apron noise reduction method based on UUSGSR, and belongs to the technical field of numerical control machine tool servo tool rest power tool apron monitoring. The method comprises the specific steps that Hilbert transform and elliptic filtering preprocessing are conducted on monitored bearing vibration signals in a tool rest power tool apron; constructing an unsaturated scaling type Gaussian potential stochastic resonance model processing signal; a high-order weighted harmonic noise ratio HWHNR is proposed as a target function to reflect signal nonlinear characteristics; optimizing the structural parameters and the damping factors by using a grey wolf optimization algorithm to obtain an optimal under-damping unsaturated scaling type Gaussian potential stochastic resonance model UUSGSR containing the model structural parameters and the damping factors, and performing stochastic resonance processing on bearing vibration signals in the power tool apron of the tool rest by using the model. Noise contained in a bearing vibration signal in the power tool apron of the tool rest is weakened, and the signal-to-noise ratio is improved. In conclusion, the method can realize noise reduction of the vibration signal of the bearing in the power tool apron of the tool rest.

The invention discloses a turning and milling combined type numerical control machine tool, relates to the technical field of numerical control machine tools, and aims at solving the problems that an existing turning and milling combined machine tool is tedious in clamp replacement, low in clamping precision, poor in tool replacement efficiency and insufficient in machining flexibility. The machine tool comprises a machine tool box body, a rotating base and a tool bin, a rotating disc is driven by a high-speed motor in the rotating base, and a workpiece is rapidly and accurately clamped in cooperation with a sliding block adjusting structure of a clamp adapting base; the tool bin is of a magnetic attraction type tool frame and isolation box linkage structure, and efficient tool changing is achieved. And meanwhile, flexible switching of turning and milling procedures is achieved through driving of a rotating motor, a conversion motor and a hydraulic cylinder. The device is compact in structure, high in clamping and tool changing efficiency, high in machining precision and flexibility and suitable for combined machining of complex workpieces.

The utility model relates to the technical field of sheet metal part bending machines, and discloses a sheet metal part bending machine with an angle limiting function, which comprises a frame body and a bending table, and the surface of the bending table is fixedly connected with a locking strip and a bending die through bolts. Due to the fact that the sliding piece is in sliding connection with the surface of the bending table, when the lifting block moves downwards, the two ends of the push rod rotate to a certain degree and push the sliding piece to slide on the surface of the bending table, when the bending tool apron drives the bending tool to bend the sheet metal part, the two ends of the sheet metal part can tilt, and when the sliding piece is pushed by the push rod, the sheet metal part can be bent. The supporting plate can be pushed into the position between the warped sheet metal part and the bending die through the hinge plate and the shaft rod, the situation that the warped sheet metal part droops due to the gravity of the warped sheet metal part to generate radian is avoided, the angle between the warped sheet metal part and the bending die is limited and locked through the supporting plate, and the bending knife can conduct bending more accurately.

A mass damper device includes a tubular housing having a first and a second longitudinal end; at least one damping mass which is received in the tubular housing with a circumferential clearance; a first resilient element and a second resilient element. At least one end closure is arranged at the first or second longitudinal end. The housing and the end closure have cooperating mounting surfaces which define a longitudinal mounting position of the first and second end closures. The mounting surfaces are arranged such that the first and second resilient elements are compressed between the damping mass and the end closure, when the first and second end closures have been mounted, at the longitudinal mounting position, to the housing.

The invention belongs to the technical field of disc tool magazines, and particularly relates to a disc tool magazine tool reversing device which comprises a tool rest box, a rotating disc is rotationally arranged in the tool rest box and connected with a rotating motor, a tool outlet is formed in the bottom of the tool rest box, and mounting frames distributed in an annular array mode are arranged on the outer side of the circumference of the rotating disc. Sliding blocks are slidably connected to the two sides of the mounting frame in a limiting mode and slide in the radial direction of the rotary disc in a limiting mode, a tool sleeve structure is rotationally connected between the two sliding blocks through a torsional spring, a rotary driving mechanism and a pushing mechanism are arranged at the positions, corresponding to the tool outlets, of the tool rest box, and the rotary driving mechanism pushes the tool sleeve structure to rotate. And the pushing mechanism downwards pushes the sliding block and the knife pouch structure. When the tool pouch structure is in a horizontal placement state, the horizontal extension distance of the tool bit is reduced so as to reduce the movement range of the tool bit to ensure the working safety, and the distance of the tool bit extending out of the tool outlet is increased when the tool bit is taken.

The invention discloses a self-adaptive cutter system for brake disc machining. The self-adaptive cutter system comprises a cutter handle, a cutter disc, a cutting blade, a suspension sleeve, an electromagnet and a control system. The permanent magnet is embedded in the circular truncated cone section of the cutter handle, the suspension sleeve is circumferentially fixed to the cutter head through the flat key, the flat key is pasted with the strain gauge to detect cutting force in real time, and the electromagnet and the permanent magnet are oppositely arranged in the radial direction to form magnetic suspension supporting. And the control system adjusts the current of the electromagnet according to the strain signal, dynamically adjusts the radial rigidity and the suspension position of the cutterhead, and realizes axial-radial decoupling support in combination with the thrust bearing. In a preferable embodiment, the cutting blade realizes micron-order cutting depth adjustment through a piezoelectric ceramic driving gasket, the service life of the cutter is prolonged due to the alternative opening design of a cutter head mounting boss, and the problem of winding of a rotating lead is solved by a conductive slip ring assembly. Working conditions such as sand holes and hardness sudden change can be responded in real time, broadband vibration is restrained, the machining precision is improved, the service life of the cutter is prolonged, and the method is suitable for high-precision brake disc machining.

The present application belongs to the technical field of aircraft assembly, and provides a device and method for controlling the depth of a counterbore of an engine suspension fastener hole. The device is used in the process of drilling an engine suspension fastener hole and counterbore, and controls the depth of the counterbore. The device is composed of a micrometer, a sensor and a tool holder. The micrometer is fixed on the tool holder, and the end of the micrometer is a flat surface. The working end of the sensor is a half-spherical surface, which can be compressed. The tool holder moves with the deepening of the counterbore depth, so that the end surface of the micrometer and the sensor are in contact and the sensor is compressed. When the compression reaches a certain depth, the sensor triggers, the device stops the counterbore, the tool exits the product, and the assembly part is automatically counterbored to the required size. The present application can automatically control the depth of the counterbore of the assembly part and the part.

Robotic surgical systems configured to control the movement and actuation of a single robotic arm, and the movement and actuation of first and second tools carried in a tool holder at a distal end of the robotic arm.

The invention relates to the technical field of shearing machines, in particular to aluminum veneer continuous shearing equipment which comprises a moving platform, a portal frame moving synchronously with the moving platform is assembled on the surface of the moving platform, and a cutter assembly used for shearing aluminum veneers is assembled below the portal frame; by arranging the moving platform, the moving frame and the tool rests, in the moving process of the moving frame and the moving platform, the tool rests are unlocked through the mounting assembly, the pushing assembly pushes the non-working tool rests to move, the continuously-working tool rests are extruded into the empty moving frame, and the non-working tool rests move into the mounting base; the cutter is fixed through the mounting assembly, and the conversion operation of the cutter can be realized in the moving process; meanwhile, when the abrasion loss of the tool exceeds a threshold value after the tool works for a certain time, the tool switching operation is switched into the tool changing operation in the non-stop state, and finally the continuous shearing operation of cleaning, heat dissipation and tool changing of the aluminum veneer in the non-stop state is achieved.

The present invention discloses a lathe for manufacturing vacuum rollers for papermaking machines, which relates to the technical field of cutting equipment and comprises a bed, a tool holder fixedly provided at the top middle portion of the bed, an annular cutting knife rotatably provided on the inner side of the tool holder, the blade of the annular cutting knife facing the center of the circle; a cutting mechanism for controlling the annular cutting knife to cut the roller blank; and a rotating mechanism for rotating the workpiece to increase cutting efficiency. The lathe for manufacturing vacuum rollers for papermaking machines changes the tool and cutting method of the existing cutting lathe, replacing the circular cutting knife with an annular blade, thereby increasing the contact area between the blade and the inside of the workpiece when cutting the cylindrical roller blank, thereby increasing the cutting efficiency. During the cutting process, the workpiece is also slowly rotated, so that the blade can cut all surfaces of the workpiece, which not only avoids the blade from doing work in vain, but also increases the efficiency of the cutting process.

The invention belongs to the related technical field of part finish machining, and particularly discloses a shaft part machining device which comprises a base, a spindle box is arranged on one side of the upper end face of the base, hydraulic calipers are installed at the end of the spindle box, and a turning frame is arranged on the upper end face of the base and located on one side of the spindle box. A sliding seat is connected to one side of the turning frame through an arranged X-axis driving sliding rail mechanism, a double-axis adjusting seat is arranged at the upper end of the sliding seat, an installing seat is fixedly connected to the upper portion of the double-axis adjusting seat, a tool rest is connected to the upper end face of the installing seat through an arranged installing block, and a tailstock is fixedly installed above one end of the turning frame. A tool block is installed in the tool rest, the outer wall of one side of the tool rest is connected with a rotating joint through an arranged transmission mechanism, and a negative pressure pump is arranged on the outer wall of the tool rest and located at the rotating joint. The problems of resonance and long cuttings in the turning process of the slender shaft are effectively solved, and the machining quality and efficiency of shaft parts are improved.

The invention discloses a horizontal numerical control lathe and relates to the technical field of numerical control machine tools, the horizontal numerical control lathe comprises a machine base, a tool apron fixedly arranged on the machine base and a tailstock slidably arranged on the machine frame, a turning tool is installed on the tool apron, a rotating disc is rotatably arranged on the tailstock, and a motor used for driving the rotating disc to rotate is arranged on the tailstock. A turntable is arranged on the machine base, a workpiece clamping tool is arranged on the turntable, an auxiliary support is further arranged on the machine base in a sliding mode, a feeding mechanism used for driving the tailstock and the auxiliary support to slide is arranged on the machine base, and a positioning cavity used for allowing a workpiece to penetrate through is formed in the auxiliary support. And a plurality of positioning pieces for limiting radial deviation of the workpiece are arranged in the positioning cavity. By means of the turning tool, the stability of the workpiece during machining can be improved, the turning tool can conduct turning machining on the workpiece more accurately, and the machining precision and the machining quality are guaranteed.

A grinding machine has a machine housing and a drive motor arranged therein, for rotating and / or oscillating drive of a tool holder to which a disk tool is releasably attachable. The machine has a disk tool cover delimiting a dust removal space in which the holder is arranged and which holds the tool when the tool is arranged on the holder. A dust removal connector through which a dust / air stream can flow is arranged on the space. A dust removal device is connectable to the connector. The dust / air stream conveys out of the space dust occurring during machine operation. Away, and separately, from the connector, at least one external air inlet for letting in external air is arranged on the space. The machine has a closure mechanism arranged on, or activated using, the device. The inlet is closable, at least in part, with the mechanism.

The invention relates to the technical field of bolt machining, and particularly discloses a chamfering device for bolt production, which comprises a feeding conveying mechanism, a chamfering mechanism and a discharging conveying mechanism, the chamfering mechanism comprises a cutter assembly, a cutter mounting seat, a rotary driving piece and a mounting frame, and the cutter assembly comprises a cutter holder, a rod part chamfering cutter, a head part chamfering cutter and a cutter changing driving piece. The rod part chamfering tool is provided with a first chamfering position and a first idle position, the head part chamfering tool is provided with a second chamfering position and a second idle position, and the tool changing driving piece can drive the rod part chamfering tool to be switched between the first chamfering position and the first idle position; when the rod part chamfering tool is located at the first chamfering position, the rod part chamfering tool rotates to chamfer the rod part; and when the head chamfering cutter is located at the second chamfering position, the head chamfering cutter rotates to chamfer the head. When the chamfering device is used, after the rod part of the bolt is chamfered, the head part of the bolt can be chamfered by the chamfering mechanism without taking down the bolt for feeding again, so that the chamfering efficiency of the bolt is improved.

The invention relates to the technical field of intelligent manufacturing equipment, in particular to a turning machine tool and a turning method of a hydraulic motor output shaft. The turning machine tool comprises a rack, a drill chuck assembly used for clamping and fixing a workpiece is rotationally installed on the rack, and the drill chuck assembly is driven by a driving device arranged on the rack to rotate; a tailstock is fixed to the machine frame, and an ejector pin which can linearly move, can rotate and is used for abutting against and limiting the end of a workpiece is installed on the tailstock. A tool rest bottom plate capable of linearly moving in the axial direction of a workpiece is arranged on the rack, a rotary cutter head is arranged above the tool rest bottom plate, and a tool turret is arranged above the rotary cutter head; a plurality of turning tools with the machining precision gradually increased are sequentially and fixedly clamped on the tool turret in the circumferential direction at equal angles. The turning method is efficient, precise and high in automation degree. And the bottleneck problems of low efficiency, poor precision stability, dependence on skilled workers and the like of multi-precision shaft parts such as output shafts of hydraulic motors in the traditional turning process are effectively solved.

The application discloses a kind of visual-based end mill flank wear detection method and its image acquisition device, method includes fixing tool on the tool holder of image acquisition device, and the wear area of tool is observed by microscope of image acquisition device and S is photographed End mill flank wear picture under multiple shooting angles;Contrast the topography of tool flank face in the picture shot before and after wear, measure the wear of tool flank face in the picture shot, obtain S group of tool wear data under different shooting angles;Establish the mathematical model of tool wear and shooting angle, solve the only fitting function describing the change of tool wear with shooting angle;Draw the image of fitting function y (x) in the shooting range K, solve image peak value.The maximum wear of tool can be obtained simply, intuitively and accurately by the application.Under the premise of image acquisition automation, automatic measurement of tool wear can be realized, and has high engineering application value.

A workpiece clamp of the device drives a workpiece to rotate around the center line of the workpiece, a spinning wheel is installed on a tool rest in a free rotation mode, the tool rest is installed on a feed driving mechanism, and the feed driving mechanism is matched with rotation of the workpiece clamp so that the spinning wheel can be rolled to all positions of the side face of the workpiece. One end of the first amplitude-change pole is connected with the tool rest, the other end of the first amplitude-change pole is connected with the first transducer, an included angle is formed between the second amplitude-change pole and the extension direction of the first amplitude-change pole, one end of the second amplitude-change pole is connected with the tool rest, and the other end of the second amplitude-change pole is connected with the second transducer. Ultrasonic vibration is conducted in the direction perpendicular to and parallel to the center line of the workpiece; the method applies the device. By reasonably setting the ultrasonic phase and amplitude, the surface of the workpiece can be impacted in the vertical direction and the tangential direction of the surface of the workpiece, and the quality of the spinning workpiece is improved.

The invention provides a tool for chamfering an upper surface and a lower surface separately, intelligent chamfering equipment and a chamfering method, and relates to the technical field of chamfering of welding cutting. The cutter comprises a floating cutter handle, a cutter bar, a rotating sleeve, an upper cutter holder, a lower cutter holder, an upper pressing wheel, a lower pressing wheel, an upper depended wheel and a lower depended wheel, the upper cutter holder is sleeved with an upper pressing disc, the bottom face of the upper pressing disc is detachably connected with the rotating sleeve, a plurality of upper blades extend out of the top face of the upper pressing disc, and the side face of the upper depended wheel is a first conical face. The small end of the first conical surface is the top surface of the upper leaning wheel; the lower blades extend out of the bottom face of the lower pressing disc, the side face of the lower depended wheel is a second conical face, and the small end of the second conical face is the bottom face of the lower depended wheel. The lower blades extend out of the bottom face of the lower pressing disc, the side face of the lower depended wheel is a second conical face, and the small end of the second conical face is the bottom face of the lower depended wheel.

The invention belongs to the technical field of internal thread machining, and particularly relates to an efficient internal thread grinding technology which comprises the following steps that the two ends of a multi-line grinding wheel structure are connected with a rotating main shaft on a machine body through HSK cutter handles; finishing the multi-line grinding wheel structure by utilizing a finishing roller shaft on the machine body; a workpiece is installed on a middle main shaft, and the middle of the multi-line grinding wheel structure penetrates through the interior of the workpiece; and the rotating main shaft and the middle main shaft are driven to rotate, and the rotating speed ratio of the rotating main shaft to the middle main shaft is adjusted according to the machining requirement of the internal thread of the workpiece. By arranging the multi-line grinding wheel structure, a multi-line grinding mode can be adopted, a plurality of threads can be ground on a workpiece at the same time, the grinding efficiency can be greatly improved, and mass production is facilitated. And secondly, abrasion of the grinding wheel can be relieved, and the machining cost is reduced.

The utility model relates to the technical field of part assembling, in particular to an automatic assembling machine of a valve rod sealing ring, which comprises a machine frame, a valve rod feeding assembly, a valve rod loading assembly, an O-shaped ring feeding assembly, an O-shaped ring loading assembly, a rotary table assembly and a finished product unloading assembly, the valve rod feeding assembly, the valve rod loading assembly, the O-shaped ring feeding assembly, the O-shaped ring loading assembly, the rotary table assembly and the finished product unloading assembly are arranged on the machine frame, and a tool seat used for clamping a valve rod is arranged on the top of the rotary table assembly. The number of the O-shaped ring feeding assemblies is two, and the number of the O-shaped ring feeding assemblies is two. Each O-shaped ring feeding assembly comprises a feeding mechanism and a ring supporting mechanism. The two O-shaped ring feeding assemblies take the O-shaped sealing rings from the two ring supporting mechanisms correspondingly and sequentially push the two O-shaped sealing rings into the first groove and the second groove of the valve rod clamped to the tool base correspondingly. According to the utility model, the ring supporting action is carried out through the ring supporting mechanism, and the O-shaped ring feeding assembly can finish feeding of the O-shaped sealing ring only by taking and pushing out the O-shaped sealing ring, so that the assembling steps are simplified, and the working efficiency is effectively improved.

The invention discloses a metal cutting machine tool which comprises a base, a sliding seat is erected on the upper surface of the base, one end of the sliding seat is slidably connected with a first clamping table, a first rotating rod is arranged on the first clamping table, the end of the first rotating rod penetrates through the first clamping table and is connected with an abutting block, and a cantilever is installed at the position, located at the other end of the sliding seat, of the upper surface of the base and provided with a three-jaw chuck. The three-jaw chuck can automatically rotate on the cantilever, a movable tool apron is connected to the sliding base in a sliding mode, a milling cutter is installed on the movable tool apron, the movable tool apron can transversely and longitudinally adjust the position of the milling cutter, a chuck is arranged on the lower surface of the upper end of the cantilever, and a cutter is clamped on the chuck. A milling cutter and a cutting tool are integrated on the same base, a three-jaw chuck drives a workpiece to rotate through a common driving structure, milling and radial cutting are synchronously completed during one-time clamping of the workpiece, integration is not simple component superposition, and the machining efficiency is greatly improved through association of workpiece rotation and double-tool collaborative cutting. The defect that multiple clamping is needed in multi-procedure machining is overcome.

The invention discloses a liquid nitrogen cooling and laser heating collaborative auxiliary cutting device and a cutting method thereof. The device comprises a laser heating system, a liquid nitrogen cooling system, a cutting system, a tool temperature monitoring system and a control system. Laser emitted by the laser heating system is focused on a to-be-machined area of a workpiece in front of a cutting edge after transmitting through the cutter body; the liquid nitrogen cooling system accurately sprays liquid nitrogen to the cutting edge area of the tool through a heat insulation liquid supply pipeline and a nozzle which are integrated in the tool rest. The control system dynamically and synergistically adjusts the laser output power and the liquid nitrogen injection flow based on a temperature signal sent by a thermocouple embedded in the cutter. According to the device, parallelism of the two processes of laser heating of a workpiece and liquid nitrogen cooling of a tool is achieved in space, dynamic matching and accurate balance of laser heating and liquid nitrogen cooling are achieved in time, and the problems that in laser-assisted cutting, the tool is prone to thermal damage, the cooling efficiency is low, and a thermal field is out of control are effectively solved.

The invention discloses a cutting pick wear detection method and system for a heading machine, and relates to the technical field of mining machinery state monitoring, and the method comprises the steps: obtaining a cutting pick tool seat and a tool bit, fixing the tool bit on the tool seat through a plurality of rotating shafts, and arranging a plurality of high-bandwidth acoustic emission sensors on the rotating shafts; identifying a rotation detection signal by using a high-bandwidth acoustic emission sensor, and extracting characteristics such as acoustic emission pulse starting time and peak amplitude; constructing a sound source space positioning model to obtain a sound source positioning result; and mapping a sound source positioning result to the rotating shaft three-dimensional model to identify hidden wear, and outputting a risk level. The technical problems that the traditional detection means is difficult to accurately identify the hidden wear of the heading machine cutting tooth rotating shaft and cannot comprehensively and accurately acquire wear information to meet the accurate evaluation requirement are solved, and the accurate identification and risk grade evaluation of the hidden wear of the heading machine cutting tooth rotating shaft are achieved; and the accuracy and comprehensiveness of cutting pick wear detection are improved.

The utility model provides an anti-chip-sticking metal ceramic milling cutter. The anti-chip-sticking metal ceramic milling cutter comprises a connecting column, the knife handle is arranged in the connecting column; the tool bit is arranged at one end of the tool handle, a chip removal groove is formed in a chip cutting part of the tool bit, and the tool handle and the tool bit are made of metal ceramic materials. The threaded rod is rotated to drive the conical block to move upwards, so that the threaded rod is separated from the screw hole, at the moment, the trapezoidal block is reset through the spring, the fixing rod is separated from the inserting hole, and then the extending length of the tool bit can be adjusted; and meanwhile, the conical block moves downwards to extrude the trapezoidal block and the fixing rod to move and compress the spring, so that the fixing rod extends into the insertion hole, and the cutter handle is fixed through the threaded rod and the fixing rod, so that the effect of adjusting the overall length of the milling cutter according to use requirements is achieved, and the use flexibility, applicability and efficiency of the milling cutter are effectively improved.