252 results about "End mill" patented technology

The invention discloses an on-machine measurement assistive device and method for abrasion of a discrete edge end mill. The auxiliary tool comprises a fixing clamp, a worm and gear and rack composite lifting mechanism, a bevel gear driven pivotal bearing mechanism, a camera platform, an industrial camera and a laser gradienter. The fixing clamp comprises a bolt and a gasket; the invention discloses a worm and gear and rack composite lifting mechanism. A bevel gear drives a pivotal bearing mechanism. The measuring method comprises the following steps: vertically lifting and positioning the camera platform by driving the worm and gear mechanism; horizontal rotation positioning of the camera platform is achieved by driving the bevel gear mechanism, the laser gradienter provides position reference, the industrial camera collects cutter abrasion images, and the image processing unit analyzes and processes the collected images and calculates abrasion loss. On-machine real-time monitoring of abrasion of the discrete edge end mill can be achieved, automatic abrasion measurement of chip separating grooves of different heights is completed, frequent manual adjustment is avoided, and the measurement precision and reliability are improved.

The invention provides a design method for balancing cutting force between cutting edges of a symmetrical gradually-changing end mill, and relates to the technical field of shape characteristics of milling cutters, through the design of the gradually-changing cutting edges, a truncated edge is evolved into a sharp shape, and multifunctionality from rough machining to finish machining is achieved; the gradual change characteristic remarkably improves the chip breaking effect in the cutting process, tool adhesion is effectively prevented, meanwhile, cutting chip breaking is promoted by thinning cutting chips and reducing the bending rigidity of the cutting chips, in addition, due to the symmetrical design of the odd number of cutting edges and the even number of cutting edges, cutting force is balanced, cutting loads are reduced, abrasion is reduced, and the service life of the tool is prolonged. Further, the machining stability is enhanced, and high-quality surface quality and machining precision are ensured; through deep analysis of cutting force and distribution thereof, vibration is effectively reduced through the design, the stability of the cutter is further improved, the service life of the cutter is further prolonged, meanwhile, the fracture state of cuttings is optimized, and the machining efficiency is 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.

By analyzing the micro-texture of the machined surface, inverse estimation of tool mounting eccentricity is realized on the machine tool. [Solution] Under predetermined workpiece parameters, simulation machining is performed based on multiple parameter sets obtained based on different tool parameters, tool attitude parameter settings, and cutting parameters, and the surface shape after machining for each parameter set is obtained. An optimization variable set is constructed based on each parameter set, and the optimization variable set when waviness is most sensitive to changes in tool mounting eccentricity is determined. The tool mounting eccentricity during machining of the workpiece sample is calculated using the constructed relationship between the tool mounting error and the peak-to-peak value of waviness. If the tool mounting eccentricity exceeds the predetermined value, the bull nose end mill is reattached and the workpiece sample is replaced so that the workpiece can be actually machined, and this calculation of tool mounting eccentricity is repeated until the tool mounting eccentricity becomes smaller than the predetermined value.

The utility model relates to synchronous cross operation control over transverse station connection, rail piece flash processing and heel end rail bottom milling of special-shaped steel rails, in particular to a multi-station rail piece connection system for flash processing after forging of steel rails, which can be used for intelligent manufacturing of turnouts. The whole transverse station mainly comprises a feeding and storing area, a feeding and overturning area, a waiting area, a machining area, an inspection area, a discharging and overturning area and a discharging and collecting and storing area. The material waiting area has the double functions of material taking, material placing and material waiting for heel end milling rail pieces and material waiting for flash machining at the same time, so that rail piece feeding connection of rail bottom milling and transition section flash machining is achieved. The connecting vehicle body can move in the transverse area of the whole flash machining production line in a through mode and can transversely penetrate through seven transverse station areas. The connecting system is mainly composed of a ground rail unit, an advancing power set, a vehicle body frame, a rail piece inverted supporting body and a height oil cylinder set.

The invention relates to the technical field of numerical control machining, and discloses an end mill tool bit parameter optimization method which comprises the following steps: step 1, collecting cutting force data, cutting temperature data and machining vibration data in a machining process in real time through a sensor group integrated on an end mill tool bit; the sensor group comprises a strain sensor, a temperature sensor and a vibration sensor; 2, the collected cutting force data, cutting temperature data and machining vibration data are subjected to wireless processing; according to the technical scheme, a closed-loop control system is constructed, the feeding speed, the cutting angle and the cutting depth are automatically adjusted according to dynamically-changed cutting force and vibration data, it is ensured that the machining process is always kept within a stable interval, the machining precision and the surface quality of a workpiece are effectively improved, and the machining efficiency is improved. Compared with the technical scheme that fixed preset parameters are adopted for machining in the prior art, the defect that the precision and quality of the workpiece are finally damaged due to process instability caused by the fact that adaptive adjustment cannot be achieved is overcome.

The application discloses a kind of head crescent boss processing methods of pin shaft structure bite cutting forceps, comprising the following steps: (1) the head of bite cutting bite cutting forceps is aged hardening;(2) the lower forceps tube of bite cutting forceps is clamped on five-axis engraving machine;(3) whether workpiece clamping on tool is in place is detected;(4) detection end mill, run program, carry out roughing to blank;(5) detection T-shaped milling cutter I, the wear condition of tool is detected in machine using tool detector, whether tool wear exceeds limit value is judged, if exceeding tool wear, machine tool automatically alarms, prompts operator to replace tool;(6) run program, outer circular surface is processed using T-shaped milling cutter I, (7) tool is replaced for T-shaped milling cutter II, T-shaped milling cutter II is detected again, and detection steps are as in step (5);(8) run program, inner circular surface is processed using T-shaped milling cutter II.The method can be processed crescent structure at a time, guarantee processing efficiency, precision and stability.

This invention discloses a deep-hole machining carbide end mill with a chip removal structure, applicable to the field of end mill technology. The invention uses an air blower at the bottom of the end mill component to blow outwards high-pressure gas, effectively reducing the impact of chips on the turning capability of the end mill component. A chip removal guide plate guides the high-pressure airflow, causing the high-pressure airflow to carry the turning chips upwards along the outer surface of the guide plate. Finally, the high-pressure airflow concentrates at the chip riser, increasing the airflow force and effectively increasing the blowing height of the turning chips, allowing them to exit the deep hole. Larger turning chips are retained on the inner surface of the chip removal guide plate, effectively preventing them from blocking the upward flow of high-pressure airflow and providing a stable retention environment for larger chips, thus effectively reducing the impact of larger turning chips on the drilling capability of the end mill.

A multi-sensor integrated intelligent tool holder real-time monitoring and anti-collision system, comprising: an intelligent tool holder device, an external PLC controller, a built-in relay, a numerical control machine tool and a PC signal processing and display module; the intelligent tool holder device comprises: a handle cone structure, a force sensor structure, a resistance strain gauge group, a protective shell, a plurality of supporting copper columns, a first hardware circuit board, a second hardware circuit board, a vibration sensor, a lithium battery, a fixed upper shell, a fixed bottom shell, a draw stud, a clasp spring, a compression cap and an end mill. The application is based on the collected cutting signals for real-time analysis and rapid judgment and response, is not affected by the machining environment and the shape and size of the workpiece, is accurate in measurement, greatly reduces the influence of the external sensor arrangement distance on the cutting data accuracy, and is suitable for the monitoring of cutting force and vibration and the anti-collision monitoring link in the part machining process, and improves the cutting automation, intelligence and safety level.

The utility model relates to the technical field of end milling cutter edge grinding inspection, and discloses an inspection device for end milling cutter edge grinding, which comprises a device main body, the outer surface of the upper end of the device main body is fixedly connected with a device top cover, and the outer surface of the upper end of the device main body is rotatably connected with a fixed base. A storage cabinet is fixedly connected to the outer surface of the lower end of the device top cover, a first clamping plate is slidably connected to the outer surface of the lower end of the device top cover, and when the device is used, adjustment can be conducted through an arranged limiting arc-shaped plate according to the size of an end mill, so that the end mill is fixed; wherein the anti-skid gasket and the anti-skid base are made of rubber materials, good anti-skid performance is achieved, the end mill can be stably fixed to the upper portion of the fixed base, the first reinforcing plate and the second reinforcing plate serve as reinforcing parts to be fixed to the two sides of the end mill, the bandage penetrates through the second clamping plate to be reinforced, and the placing stability of the end mill is improved.

The utility model belongs to the technical field of cutters, and discloses an end mill, which is characterized in that bottom blades are distributed on a revolution surface formed by rotation of a 1 / 4 ellipse around a central axis of a cutting part, so that a tool cutting edge angle is gradually and slowly increased in the direction from the center of the end mill to the periphery of the end mill, and one end, connected with a circumferential blade, of each bottom blade can also be used for cutting. And under the same cutting depth, cuttings become thinner and longer, and the thinning cutting effect is better during fast feeding, so that the machining efficiency of difficult-to-machine materials such as titanium alloy and high-temperature alloy is improved. The end, connected with the circumferential edge, of the bottom edge is used for increasing the maximum cutting depth after cutting, and the front angle corresponding to the bottom edge is gradually increased in the radial direction, away from the central axis of the cutting part, of the cutting part, so that the end, close to the circumferential edge, of the bottom edge is sharper, cutting resistance is reduced, cutting force and cutting heat are reduced, and the wear resistance of the cutter is improved; and the service life of the cutter is prolonged.

This invention relates to a method for regrinding fir tree-shaped end mills, including checking the sharpness and diameter wear of the end mill to determine the regrinding method; rake angle regrinding, using a grinding wheel to regrind the rake angle of the fir tree-shaped end mill; or clearance angle + rake angle regrinding, using a grinding wheel to regrind both the clearance angle and rake angle of the fir tree-shaped end mill. This invention also relates to a method for machining fir tree-shaped tenons using a fir tree-shaped end mill, including checking the end mill, determining the machining method, and performing one-pass machining or two-pass machining. This regrinding method increases the number of regrinding cycles for the fir tree-shaped end mill, extending its service life by 3-4 cycles and reducing the cost of the fir tree-shaped end mill by 20%. This machining method ensures the machining accuracy of the fir tree-shaped tenons.

The invention belongs to the field of PCB (printed circuit board) production, and particularly relates to a production method for preventing waste blockage in PCB forming routing, which comprises the following steps of: S1, performing positioning drilling on a PCB to drill a positioning hole; s2, the PCB is placed on a machine table, the PCB is positioned according to the positioning holes and fixed in a vacuum adsorption mode, and it is ensured that the board surface is flat and free of warping; s3, according to the specific graphic design of the PCB, a forming routing path is planned, and a waste crushing path is designed; s4, the forming routing equipment is started, according to the routing process, an end mill conducts contour cutting according to the preset path, and meanwhile the end mill crushes the waste along the waste crushing path; and S5, in the cutting process, a machine table dust collection system operates synchronously, a waste crushing path is designed before board milling, during board milling, an end mill conducts contour cutting according to a preset path, meanwhile, the end mill crushes waste along the waste crushing path, waste powder is crushed into small-particle waste, and therefore follow-up waste blockage and dust collection can be prevented.

The utility model belongs to the technical field of milling cutters, and particularly relates to a multi-edge ball-end milling cutter. The multi-edge ball-end milling cutter comprises a cutter handle and a hemispherical cutter body which are coaxially connected, a plurality of blade mounting grooves are uniformly formed in the circumferential direction of the cutter body, a blade is arranged in each blade mounting groove, the blades are detachably mounted in the corresponding blade mounting grooves, each blade is of a central symmetry structure, and each blade is provided with two cutting edges which are distributed in a central symmetry mode. The double-sided use of the blade can be realized, so that the service life of the whole ball-end milling cutter is prolonged, and the replacement frequency of the blade is reduced; meanwhile, the blade can be detached and replaced, so that the knife handle and the knife body can be reused, and the use cost is reduced.

The utility model relates to the technical field of ball head blade cooling, and discloses a ball head blade with a cooling channel, which comprises a ball head rod, the top of the ball head rod is detachably provided with a ball head blade, the bottom of the ball head rod is provided with a liquid conveying hole communicated with the top of the ball head rod, and the bottom of the ball head blade is provided with a conveying pipe matched with the liquid conveying hole. A liquid conveying channel communicating with the conveying pipe is formed in the ball head blade, a plurality of liquid spraying holes communicating with an inner cavity of the liquid conveying channel are formed in the outer wall of the ball head blade, and the anti-blocking pieces are arranged in inner cavities of the liquid spraying holes and used for preventing chippings generated during workpiece machining from blocking the liquid conveying channel and the liquid spraying holes. And the cooling liquid can act on the outer part of the ball head blade in time. According to the utility model, the anti-blocking piece can prevent the ball head blade from softening the workpiece due to rapid temperature rise when the workpiece is processed by the ball head blade, so that the abrasion degree of the ball head blade is reduced, and the service life of the ball head blade is prolonged.

The utility model relates to a high-feed blade and a high-feed milling cutter, and relates to the technical field of milling cutters, the high-feed blade comprises a blade body, a positioning hole is formed in the blade body in a penetrating mode, the blade body is provided with a front cutter face, a bottom positioning face and four side faces, and a main cutting edge and a fillet edge are arranged between the front cutter face and each side face; and ridges formed by intersecting the bottom positioning surfaces and the side surfaces on the two adjacent sides are perpendicular to each other, the included angle between an external square formed by penetrating through the middle points of the two adjacent fillet blades and the ridges is a, and the range of a is 0.5-5 degrees. The problem that high-feed machining is difficult to achieve due to the fact that the tool cutting edge angle of a blade of an existing milling cutter is large can be solved.

The present invention relates to a left-hand rotating end mill (1) with a shank (10) and a cutting head (20) having a number of left-hand spiral cutting edges (50) spaced apart from one another by flutes (30), wherein the cutting edges (50) are divided into cutting edge segments (60) at least over a portion of their length by a number of right-hand spiral dividing grooves (40). The cutting head (20) is divided into a shank-side cutting step (22) and an end-side cutting step (24) adjoining the shank-side cutting step (22) via a transition section (23), the end-side cutting step having a smaller cutting diameter than the shank-side cutting step (22).

The invention relates to a high-wear-resistance coating for a diamond straight-shank end mill and a preparation method of the high-wear-resistance coating, and belongs to the technical field of wear-resistance coatings. According to the high-wear-resistance coating for the straight-shank end mill of the diamond and the preparation method of the high-wear-resistance coating for the straight-shank end mill of the diamond, the thickening agent is self-made, after the thickening agent, titanium powder, silicon powder and silver-copper alloy powder are made into brazing filler metal, the straight-shank end mill base body of the diamond is brazed, and the high-wear-resistance coating for the straight-shank end mill of the diamond is obtained; an alkyl hydrophobic long chain improves the wetting effect of the brazing filler metal on the surface of a base body by reducing surface tension, in addition, azo bonds in the long chain are preferentially broken in the brazing process and decomposed into small molecule compounds, then the small molecule compounds are gradually and completely decomposed, metal powder in the brazing filler metal can be directly combined with the surface of the base body, and a firm alloy coating is formed; the wear resistance and the comprehensive service life of the diamond straight-shank end mill are improved.

Cam groove machining is performed using general-purpose machining equipment. [Solution] A workpiece 100, which is a roller gear cam that rotates around a rotation axis XR, has a cam groove formed on its oval surface 110. The cam groove is machined by a ball end mill 200 that rotates around a rotation axis XB. The tip of the ball end mill 200 is a hemispherical surface 210, and the hemispherical surface 210 contacts the oval surface 110. Therefore, even if contact is made from a direction other than the normal direction of the oval surface 110, contact is made at a single point. The normal direction of the oval surface 110 at the contact position CP is FR, and the contact direction of the ball end mill 200 is FB. The opposite direction of FR and FB do not coincide, but since contact occurs at position CP of the hemispherical surface 210 of the ball end mill 200, the cam groove can be machined well.

The invention provides a ball-end milling cutter milling force modeling method and device, relates to the technical field of numerical control machining, and is used for solving the technical problem that the milling force is difficult to accurately predict by an existing milling force modeling method. The method comprises the following steps: constructing a single fiber milling force model of the thermoplastic composite material; according to the single fiber milling force model, constructing macroscopic milling force models corresponding to different areas of the ball-end milling cutter; constructing a target infinitesimal milling resultant force model of any point on the ball-end milling cutter according to the macroscopic milling force models corresponding to different areas of the ball-end milling cutter; and according to the target infinitesimal milling resultant force model of any point on the ball-end milling cutter, summing the target infinitesimal milling resultant forces of all points on the milling area of the ball-end milling cutter, and constructing an overall milling force prediction model of the ball-end milling cutter. Therefore, the invention provides an integral milling force prediction model which starts from a milling mechanism and reveals the change rule of the milling force based on the milling nature, so that the accuracy of predicting the milling force is greatly improved.

This invention discloses a method for solving the grinding trajectory of helical grooves in a conical end mill. Specifically, the method involves: first, defining the process characteristics of the helical groove, including modeling the tool's helical cutting edge, defining tool parameters, and modeling the grinding wheel's grinding motion; second, establishing the solution equation for the grinding wheel's pose based on the tool parameters; and finally, using a particle swarm optimization algorithm to solve for the grinding wheel's pose. This invention can be effectively used for machining helical grooves, simultaneously meeting the machining accuracy requirements of the rake angle and core diameter, and providing a theoretical reference for the actual production and machining of cutting tools.

This utility model belongs to the field of ball end mill technology, and particularly relates to a ball end mill with a self-lubricating head structure. Addressing the problem of existing ball end mills requiring lubricant assistance, the following solution is proposed: A tool shank is included, with a tool head fixedly mounted at its bottom end. A lubrication mechanism is provided on the outside of the tool shank. The lubrication mechanism includes a sleeve block slidably connected to the outside of the tool shank. The sleeve block is rotatably connected to the sleeve via a high-speed ball bearing, allowing the sleeve to remain stable during tool shank rotation. The sleeve is then connected to a connecting pipe via a connector. The connector and delivery pipe are connected to a pump in an external fluid supply structure, enabling the delivery of lubricant into the sleeve. Finally, the lubricant is guided through a connector and an outlet pipe, and sprayed out through the outlet to lubricate the tool head. This forms a lubricating film, reducing the coefficient of friction, and removes heat from the cutting area through heat conduction and convection, lowering the cutting temperature, reducing tool thermal deformation, inhibiting the formation of built-up edge and burrs, and quickly washing away chips.

The utility model discloses a multi-cutting-edge ball-end milling cutter, which relates to the technical field of lathe milling cutters and comprises a cutter handle rotating by taking a rotating axis as a center and a cutter head with a ball head part at the front end, and the cutter head comprises a main body and three or more cutting edges, the multiple cutting edges are evenly distributed and connected to the outer side wall of the body in an annular array with the rotation axis as the center, each cutting edge is of an arch-shaped structure, the middle section of each cutting edge is a large arc face of 80-90 degrees, the two ends of each cutting edge are small arc faces of 40-50 degrees, and the two sides of each cutting edge are both provided with cutting edges. The cutting edges are arranged on the two sides of the arc face of the cutting edge, so that after the ball-end milling cutter rotates forwards, the concave face of the cutting edge makes contact with a workpiece to effectively remove protrusions of the workpiece, and after the ball-end milling cutter rotates backwards, the convex face of the cutting edge makes contact with the workpiece to flatly cut the workpiece. And only workpieces in a single condition can be processed, and functionality is low.

The invention belongs to the field of end mill preparation, and particularly relates to a preparation method of a beta-Si3N4 oriented and orderly-arranged silicon nitride ceramic integral end mill. A horizontal sintering mold is filled with the silicon nitride-based mixed powder, the filled powder is in a long-axis shape in the sintering mold, SPS sintering is carried out, the sintering pressure acts on the long-axis direction of the powder during sintering, beta-Si3N4 crystal grains are directionally arranged in the long-axis direction in the sintering process, and a ceramic matrix with an ordered microstructure is formed; and the ceramic substrate is prepared into a vertical milling cutter, and the high-wear-resistance prismatic surface of the crystal grains is parallel to the main cutting force direction in the cutting process. The method successfully breaks through the size limitation of the integral end mill prepared by traditional SPS, and remarkably improves the tipping resistance and the service life of the silicon nitride ceramic cutter.

The utility model discloses an alloy spiral end mill for processing an aerospace impeller, which comprises a base, a transmission rod, an alloy spiral end mill, an indexing mechanism and a feeding mechanism, and the transmission rod is rotationally connected onto the base. The alloy spiral end mill has the beneficial effects that the transposition mechanism and the feeding mechanism are arranged, so that the alloy spiral end mill can slide in a limited manner in a feeding chute through a feeding rod in the feeding mechanism in the process of machining a workpiece, further a feeding adjusting rod is driven to slide, and a transmission rod is pushed to move through a linkage plate; according to the alloy spiral end mill feeding device, feeding operation of an alloy spiral end mill on a workpiece is achieved, a transmission rod is made to deflect through linkage of a transposition plate in a transposition sliding groove in the transposition mechanism during feeding, transposition of the alloy spiral end mill is achieved, end teeth of the alloy spiral end mill can make uniform contact with the workpiece, and the machining precision of the alloy spiral end mill is improved. And the situation that the machining precision is affected due to end tooth breakage is avoided.

The utility model relates to the technical field of milling cutters, and discloses a single-blade milling cutter for aluminum, which comprises a handle part, a blade part is arranged at the front end of the handle part, a blade is arranged at the front end of the blade part, and a round hole extending into the blade part is arranged at the rear end of the handle part. According to the single-blade milling cutter for aluminum, the cutting fluid hose is inserted from the mounting hole, and when deep cavity operation is carried out, cutting fluid is injected into the circular hole through the cutting fluid hose, so that aluminum scraps adhered to the groove of the blade part are washed away, and compared with a traditional single-blade milling cutter, the single-blade milling cutter for aluminum has the advantages that the circular hole is formed in the handle part and the blade part, and the service life of the single-blade milling cutter is prolonged. Cutting fluid is injected into the through hole through the round hole, aluminum skimmings in the groove of the blade part are flushed through the through hole, so that the aluminum skimmings are effectively prevented from being adhered to the interior of the groove of the blade part, meanwhile, the interior of the blade part can be cooled, the overall cooling effect is improved under the cooperation of the external cutting fluid, the cutting effect is indirectly improved, and the service life of the blade part is prolonged. The use is convenient.

The present invention discloses a bimetallic milling cutter wear monitoring method and system that considers differences in material properties. The method relates to the technical field of bimetallic material processing. The method comprises: real-time acquisition of the milling force and vibration signals of the bimetallic end mill during the milling process; inputting the acquired milling force and vibration signals into an unsupervised material recognition model, and after feature extraction and feature dimensionality reduction, clustering and outputting the metal material category of the current signal; inputting the acquired milling force, vibration signal, and corresponding metal material category into a physics-guided neural network model based on wear mechanism, and outputting the flank wear value of the bimetallic end mill. The present invention considers the differences between the two metal materials and introduces wear mechanism guidance. Through wear physics-data fusion monitoring, a monitoring model with higher accuracy and better robustness is obtained, effectively improving the accuracy of tool flank wear value monitoring in bimetallic end milling scenarios.

The application discloses a kind of flat bottom end face milling cutter tool shaft vector optimization method, tool shaft vector optimization is considered from processing interference, cutting force, rotation axis angular displacement and angular velocity etc. Multiple factors comprehensively. First, the improved space partition tool shaft vector global interference detection method based on surface principle is proposed, whether the interference detection algorithm is used to judge tool to occur processing interference and carry out interference-free tool shaft vector space calculation;Second, the relationship model of end milling cutter tool shaft vector and cutting force change is established, and the tool shaft vector optimization is carried out with the tool cutting force optimization as the target;Third, using Dijkstra algorithm, an optimal path algorithm-based machine tool rotation axis angular displacement and angular velocity optimization model is proposed;Using the optimization algorithm for complex surface machining, the machining quality of the surface workpiece after tool shaft vector optimization is obviously improved compared with that before tool shaft vector optimization.

The invention provides a cross-working-condition online monitoring method for the wear state of an end mill, and the method comprises the steps: excavating the information related to the wear state of a cutter in a periodic life data monitoring signal of the cutting cutter by using the learning time sequence characteristic analysis capability based on a Transform encoder; cooperative training of feature alignment and wear state prediction is realized by using an adversarial migration network (ATN) and a maximum mean difference method (MMD); after training is completed, cutting monitoring signals under different working conditions serve as a target domain input model to conduct end mill abrasion monitoring; according to the invention, end mill wear monitoring can be carried out, and accuracy and real-time performance of end mill wear state prediction can be ensured.

This invention relates to the technical field of metal cutting tools, specifically to a compound helical end mill, comprising a neck and a cutting edge; the cutting edge includes side edges, one end of which is connected to the neck, and the other end has a plurality of side edges arranged circumferentially around the axis of the neck. Along the direction of circumferential arrangement, the side edges include left-hand left-cutting side edges and right-hand right-cutting side edges, which are set at the same end face height of the cutting edge. This structural arrangement allows both types of side edges to be aligned with the milling surface of the workpiece, thus eliminating the need to translate the end mill for re-alignment during operation, achieving efficient deburring while improving tool clamping accuracy and machining accuracy; furthermore, this structural arrangement helps to reduce the circumferential length of the end mill, making it more suitable for machining narrow grooves such as T-slots.