406 results about "End mill" patented technology

The invention discloses a method for online reconstruction of a temperature field of a cutting area of a temperature measurement end mill. The method comprises the following steps: constructing a milling cutter three-dimensional model; establishing a milling heat conduction model; finite element analysis software is used for conducting heat conduction positive problem simulation under different heat flow densities; extracting a temperature value of each node and calculating a temperature sensitivity coefficient; acquiring a temperature data sequence at the temperature measurement position; establishing and training a heat conduction inverse problem algorithm model; acquiring real-time temperature data and predicting heat flux density through a temperature measurement module; and on-line reconstruction of the temperature field of the cutting area is realized in combination with the temperature sensitivity coefficient and the predicted heat flux density. The method can monitor the cutting temperature in real time, optimize the machining parameters, prolong the service life of the cutter and improve the machining precision.

An end mill for metal cutting including a body, the body having a cutting section extending axially rearward from a front end. The cutting section includes a plurality of radially protruding and axially extending teeth. Each tooth has a front cutting edge, wherein the front cutting edge extends axially rearward and radially outward from an axially most forward point of the respective cutting edge. When the body is rotated, the cutting edge of each tooth forms a line of intersection in a central plane containing the central longitudinal axis. Each front cutting edge is interrupted by at least two chip splitting grooves, such that the line of intersection of the front cutting edge with the interrupting chip splitting grooves includes outer crests, each being located on an imaginary convex curve, at least two inner troughs, and curve parts, extending from one respective trough to one respective axially closest crest.

A milling tool includes a first cutting portion having a first and a second cutting edge extending at the periphery of the first cutting portion along, or following a helical path around, a longitudinal axis of the milling tool. The first and second cutting edges are arranged such that, when the milling tool is rotated around its longitudinal axis, they form respective first and second lines of intersection in a central plane containing the longitudinal axis, wherein the first and the second lines of intersection are arcuate. The extension of the first cutting edge is different from the extension of the second cutting edge such that the first line of intersection is different from the second line of intersection.

The invention relates to the technical field of machining, in particular to an ultrasonic milling device which comprises a milling platform, a spindle and the like. A main shaft capable of moving up and down, left and right and front and back is mounted on the milling platform; and a cutting fluid nozzle is mounted on the main shaft. Compared with a conventional ultrasonic milling device, the telescopic state of the end milling cutter is controlled through the first driving part, so that the cutter replacement operation between the face milling cutter and the end milling cutter is completed under the condition that the main shaft does not stop, the time spent on replacing the milling cutter in the milling process of a machined part is shortened, and the milling efficiency is improved; and the baffle and the annular air bag jointly prevent cutting fluid from splashing into the sleeve, collision between cuttings and the end mill is avoided, and abrasion to the end mill is reduced.

The invention discloses a drilling and milling end mill, and belongs to the technical field of machining cutters. A W-shaped bottom edge cutting long edge is formed by the bottom edge outer side edge, the transition arc edge and the bottom edge inner side edge in the two bottom edge long edge parts, the bottom edge outer side edge is higher than the bottom edge inner side edge in the central axis direction of the cutting part, and a part of the bottom edge short edge is distributed on the side, away from the clamping part, of the bottom edge outer side edge. And the other part of the short edge of the bottom edge is distributed on one side, close to the clamping part, of the transition arc edge and the inner side edge of the bottom edge. Thus, during drilling, the transition arc edge, the bottom edge inner side edge and the bottom edge short edge mainly act, the bottom edge outer side edge basically does not participate in cutting, drilling cutting resistance is reduced, meanwhile, the length of the bottom edge short edge participating in drilling and milling, the transition arc edge and the bottom edge inner side edge is short, and the bottom edge short edge and the transition arc edge and the bottom edge inner side edge are distributed in different directions of the bottom of the cutting part respectively. And therefore, the generated cuttings are smaller, and the cuttings can be conveniently discharged from the long edge chip flutes and the short edge chip flutes of the bottom edge.

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 relates to a surface topography prediction method based on a ball-end cutter model and a variable step size iterative algorithm, which is based on the ball-end cutter model, combines and applies a dynamic variable time step size strategy, accurately divides cutting and non-cutting tracks, and remarkably improves the simulation efficiency and precision. Through multi-coordinate system dynamic modeling and a specific function, the eccentricity of the ball-end milling cutter is compensated, the abrasion is accurately modeled, dynamic physical coupling is combined, the actual machining state of the ball-end milling cutter is accurately simulated, the simulation precision and authenticity are improved, and the high-precision requirement of aerospace parts can be met. Meanwhile, through modular design, a complex curved surface tool path is accurately simulated, and through adjustment of evaluation parameter threshold values, the method can be expanded to surface topography prediction of various difficult-to-machine materials, process parameters are rapidly iterated, and the process optimization period is greatly shortened.

The purpose of the present invention is to precisely process a surface-shaped portion having a fillet. An end mill includes a bottom blade having a protruding curved surface and formed in an arc shape, and a radius blade provided in a corner portion and formed in an arc shape, wherein the radius of the arc portion of the radius blade matches the radius of the arc portion of a fillet-shaped portion of a shape to be processed, and the radius of the arc portion of the bottom blade is equal to or smaller than the minimum radius of the arc portion of a surface-shaped portion adjacent to the fillet-shaped portion.

The purpose of the present invention is to perform machining on a double-curved surface to have good finished surface characteristics while achieving high speed feeding. An end mill (2) is provided with a bottom blade (2A) formed in a curved convex and circular arc shape, and a radius blade (2B) located at the edge and formed in a circular arc shape. The bottom blade (2A) has a region where a blade part is not formed on the axis of the end mill (2), and the end mill (2) is further provided with a center blade (2C) in the region of the bottom blade (2A). The center blade (2C) is formed in a circular arc shape with a radius smaller than that of the circular arc part of the bottom blade (2A).

A ball end mill includes an end mill body; a chip discharge groove, a first gash, and a bottom cutting edge. A second gash is formed at an interval from the bottom cutting edge on at least a first wall surface of the first gash. A minimum curvature radius in a cross section perpendicular to an axis of the second gash is larger than a minimum curvature radius in a cross section perpendicular to an axis of a groove bottom portion of the first gash.

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.

The invention discloses a CrAlN / TiAlN multilayer cutter coating capable of remarkably prolonging the service life of an end mill and a preparation method of the CrAlN / TiAlN multilayer cutter coating. The method comprises the steps that firstly, a Cr target is opened, deposition of a CrN / Cr transition layer is achieved by adjusting the flow ratio of introduced argon and nitrogen, the transition layer can remarkably improve the binding force between the coating and a base body, after deposition of the transition layer is about 550-600 nm thick, a Cr target power source is closed, a TiAl target power source and a CrAl target power source are alternately opened to achieve alternate deposition of a TiAlN coating and a CrAlN coating, and the thickness of the TiAlN coating and the thickness of the CrAlN coating are adjusted. The TiAlN coating is deposited on the surface of the transition layer, and the CrAlN coating is deposited on the uppermost layer. The CrAlN / TiAlN multilayer cutter coating has high hardness and high wear resistance, can remarkably prolong the service life of an end mill and improve the milling quality of the end mill, and is simple in preparation process and high in controllability.

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 invention relates to the technical field of milling cutter equipment, and discloses a special-shaped efficient machining tungsten steel end milling cutter which comprises a dustproof structure, the lower end of the dustproof structure is sleeved with a milling cutter structure, the dustproof structure is used for dust removal, the dustproof structure and an external rack are installed and fixed, and the milling cutter structure can conduct auxiliary protection on a cutter body. Meanwhile, the milling cutter structure is rotationally arranged in the center of the dustproof structure and comprises a threaded pipe, an auxiliary protection part, a butt-joint threaded rod and a milling cutter part, the lower end of the threaded pipe is sleeved with the butt-joint threaded rod, the threaded pipe and the butt-joint threaded rod are rotationally arranged relatively, and the milling cutter part is fixedly connected with the threaded pipe through the butt-joint threaded rod; the milling cutter component is fixedly connected with the butt-joint threaded rod, and threads are arranged on the butt-joint threaded rod. By arranging the dustproof structure and the milling cutter structure, auxiliary protection treatment work of the milling cutter is achieved.

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.

To provide an end mill configured so that strength of a cutting blade can be enhanced to extend tool life, while securing edge and suppressing burr from occurring.SOLUTION: A body 3 has: a chip ejection groove 4 extending spirally toward the opposite side of a rotating direction of an end mill as going from a tip surface toward a rear end of the body 3; a rake face 5; a bottom blade 71; an outer peripheral blade 72; and a sharp corner part 8 arranged in a connection part between the bottom blade 71 and the outer peripheral blade 72. In a side view in which the body 3 is viewed from a radial direction that is orthogonal to a center shaft, a torsional angle formed by the outer peripheral blade 72 and the center shaft crossing each other is 45° or more and 55° or less, and a rake angle of the outer peripheral blade 72 is -10° or more and -2° or less. The rake face 5 has an outer peripheral rake face 51 that is connected to the outer peripheral blade 72, the corner part 8 and an outer end part 71b in a radial direction of the bottom blade 71, and a tip rake face 52 that is connected to a part 71a other than the outer end part in the radial direction of the bottom blade 71, where the tip rake face 52 is arranged away from the outer peripheral blade 72.SELECTED DRAWING: Figure 3

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.

To provide a device for a toothed workpiece.SOLUTION: A device for chamfering includes: a workpiece spindle; and a processing head movable relative to the workpiece spindle by means of a linear shaft. The processing head includes a tool spindle for processing a workpiece. The processing head also includes a milling spindle that is used for holding an end mill cutter for chamfering an edge of a tooth part of the workpiece held by a workpiece holder and that has a milling cutter holder rotatably mounted. A work angle of the end mill cutter held by the milling cutter holder to the edge of the tooth part can be set by a first turning shaft. The milling spindle is disposed in a turning arm via the first turning shaft so as to enable turning. The turning arm is disposed in the processing head via a second turning shaft disposed in an orientation in parallel with the first turning shaft so as to enable turning.SELECTED DRAWING: Figure 1

The article according to this design is a cutting tool holder, for example, the body of an indexable end mill. As shown in the reference diagram showing the state of use, the article according to this design has a holding part, and rotates with an insert fixed to the holding part, thereby cutting the workpiece.

Provided is an end mill having a cutting edge section having a convex shape having one curved surface obtained by dividing a tapered body by a plane, the tapered body having a tip section and a circular bottom surface, the tip of the tip section being located on a center line penetrating through the center of the bottom surface, the tapered body having a circumferential side surface, and the circumferential side surface being located on the circumferential side surface. The circumferential side surface includes an expanded-diameter region having a larger diameter than the bottom surface, and the plane includes the centerline.

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.

The utility model relates to the technical field of milling cutters, in particular to a combined type multipurpose tungsten steel end milling cutter which comprises a cutter head, a plurality of end milling cutters and a plurality of end milling cutters, a screw rod is arranged on the surface of the small milling cutter, a limiting rod is arranged at the end of the screw rod, a circular groove is formed in the cutter head, and a cross rod is arranged in the circular groove; the telescopic rod is arranged on the surface of the cross rod; the milling cutter has the beneficial effects that the groove is formed in the surface of the cutter head, the small milling cutter is installed in the groove, the small milling cutter is fixed in the groove through the screw rod, when the cutter head rotates, the telescopic rod is thrown out of the cross rod through centrifugal force, the jacking plate moves along with the telescopic rod, and the weighting ball is arranged on the surface of the jacking plate, so that the milling cutter is convenient to move. The elastic rod is in contact with the end part of the screw rod, so that the elastic rod is extruded and deformed, the surface of the jacking plate is in contact with the end part of the screw rod, a limiting groove in the surface of the jacking plate is meshed with a limiting rod at the end part of the screw rod, and the screw rod is prevented from loosening.

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 utility model relates to the technical field of milling cutters, in particular to an R-angle end milling cutter with a reinforcing structure, which comprises a cutter bit, a frosted layer arranged on the surface of one side of the cutter bit, a mounting seat fixedly connected to the other side of the cutter bit, a lower connecting ring fixedly sleeved on the outer ring surface of the mounting seat, an upper connecting ring arranged on the upper side of the lower connecting ring, and a mounting rod fixedly sleeved in the upper connecting ring, a brake motor is arranged on the lower side of the mounting rod, and a turntable is mounted on the lower side of the brake motor; the milling cutter has the beneficial effects that the lower connecting ring and the upper connecting ring are fixedly connected, so that the mounting rod and the mounting seat are preliminarily connected, the mounting connection strength between the cutter and the mounting rod is improved, the frosted layer is arranged on the outer surface of the cutter head, the working strength of the milling cutter can be improved, and the limiting rod is slidably inserted into the limiting hole formed in the mounting seat, so that the service life of the milling cutter is prolonged. And therefore, the connection fastening strength between the cutter and the mounting rod is further improved, and the stability of the cutter head during working is guaranteed.

The present invention discloses a tool-loading and grabbing device for an end mill, wherein the inner wall of a clamping sleeve and the outer wall of the end mill are interference-fitted, a plurality of strip grooves A are provided along the axial direction of the clamping sleeve at the end of the clamping sleeve facing away from the pipe opening of a hand-held sleeve, and the strip grooves A penetrate the inside and outside of the sleeve body, and the strip grooves A separate the clamping sleeve and the tapered tube into a plurality of clamping petals, and a plurality of strip grooves B are provided along the axial direction of the hand-held sleeve at the end of the pipe opening facing away from the clamping sleeve, and the strip grooves B penetrate the inside and outside of the hand-held sleeve. It can be seen from the above structure that the tool-loading and grabbing device for an end mill of the present invention facilitates the removal of the end mill to be replaced from the tool handle and the installation of the end mill to be replaced when the end mill is being installed and changed, thereby improving the efficiency of tool installation and changing, preventing the end mill from being damaged during the process of tool installation and changing, and preventing the operator from being scalded during the process of tool installation and changing of the end mill.