173 results about "End mill" patented technology

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 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 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).

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.

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 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 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.

1. The name of the design product: double-head ball-end cutter. 2. The use of the design product: used for the cutter of numerical control cutting tool. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

The utility model relates to a skull craniotomy operation negative pressure suction device, including the flexible cover made of transparent material, the flexible cover one end big, one end small arrangement and small scale end cover set in one end of milling cutter, the cutter head of milling cutter is located in the chamber of flexible cover, flushes the head and is along the cover mouth circumference direction interval arrangement many groups of flexible cover, flushes the head with the liquid guide export of flush equipment and passes through the pipeline intercommunication, one end of suction pipe stretches into the chamber of flexible cover, the other end of suction pipe and the suction mouth of negative pressure suction device are connected through the pipeline, adopts transparent flexible cover to form the physical barrier, will the milling cutter head completely wrap up in the chamber, breaks out the bone splinter to the surrounding environment, and the flush head of circumference even distribution sprays physiological saline to the center, forms the spiral water flow in the chamber, can ensure the light transmittance of flexible cover, can clearly milling cutter head and the contact state of bone window, cooperation suction operation of suction pipe, can suck out the bone splinter that splashes out of flexible cover, and further can effectively prevent the bone splinter splashing problem.

The article to which this design relates is the body of an indexable end mill, a cutting tool. As shown in the reference diagram showing the state of use, the article to which this design relates rotates while the cutting insert is fixed by a fixing member such as a screw, causing the cutting insert to cut the workpiece. The article to which this design relates has a pocket portion that discharges chips during cutting and a seat portion where the cutting insert is installed.

A preloaded end mill is disclosed, wherein a compressive preload is induced to counteract tensile stresses that would otherwise potentially lead to crack propagation. The preloaded end mill includes a mounting end for attachment to a cutter holder, a cutting end opposite the mounting end, and a body comprising a plurality of cutting insert recesses between the mounting end and the cutting end. A center hole extends from the mounting end toward the cutting end, and a tension bar is located within the center hole. The tension bar has an end adjacent to the mounting end and an opposite end adjacent to the cutting end. A fastening mechanism engages with the tension bar to generate tensile stress in the tension bar and reactive compressive stress in the body of the end mill. The preloaded end mill is capable of withstanding high bending loads and has improved fatigue life. The amount of preload can be adjusted to a desired level. Coolant can be delivered to the cutting inserts of the end mill through coolant channels.

The utility model relates to a woodworking vertical milling machine easy to reduce burrs, which belongs to the technical field of woodworking vertical milling machines, and comprises a woodworking vertical milling machine body, the left side surface of the woodworking vertical milling machine body is fixedly connected with a mounting plate, the left side surface of the mounting plate is provided with an abdicating groove, the inside of the mounting plate is provided with a collecting groove, and the bottom surface of the mounting plate is provided with a feeding groove. A limiting bin is fixedly connected into the collecting groove, a collecting bin is fixedly connected to the right side face of the woodworking vertical milling machine body, and a conveying pipe with one end penetrating through the limiting bin and the mounting plate in sequence and extending into the collecting bin is fixedly connected to the inner top wall of the limiting bin. According to the woodworking vertical milling machine capable of easily reducing the burrs, under the action of the feeding groove, the conveying pipe and the collecting bin, dust is collected, the situation that the dust falls on the workbench and damages workpieces is avoided as much as possible, the using effect is improved, meanwhile, under the action of a filter screen, the dust is collected, workers can conveniently collect the dust, and the working efficiency is improved. The device is more convenient and practical.

This utility model discloses a double-angle end mill cutting edge detection device, including a detection body and a detection camera mounted on the detection body. A turntable is rotatably mounted on the detection body, and an insertion hole is formed on the turntable. A double-angle end mill body is inserted into the insertion hole. A drive assembly is mounted on the detection body, comprising an intermittent drive component and a double-angle end mill rotation drive component. This utility model, through the configuration of the drive assembly, not only enables the turntable to perform intermittent circular motion, allowing the detection of the double-angle end mill body, the loading of the double-angle end mill body to be detected, and the unloading of the double-angle end mill body after detection to be performed simultaneously, thus effectively accelerating the detection efficiency of the double-angle end mill body, but also allows the double-angle end mill body under detection to rotate on its own, thereby avoiding the problem of low detection accuracy caused by the omission of some surfaces of the double-angle end mill body during detection.

This utility model discloses a wear-resistant diamond-coated ball end mill, including a milling cutter body and a mounting base fixedly installed to a machine tool spindle. The top of the mounting base has a connecting groove, and a rotating ring located above the connecting groove is rotatably connected to the middle of the mounting base. A guide groove is located in the middle of the mounting base, and a driving groove is located in the middle of the rotating ring. A lifting groove is located on the outer circumference of the rotating ring, and a lifting ring is fitted around the rotating ring. A lifting block is integrally formed on the inner wall of the lifting ring, and a fixing rod is fixedly installed at the bottom of the lifting ring. The lifting block is slidably connected to the inside of the lifting groove, and a compression spring is installed inside the lifting groove. The mounting base has a fixing slot located below the lifting ring. This allows for quick installation and removal of the milling cutter body, avoiding the time-consuming and laborious process of unscrewing multiple bolts when replacing the milling cutter body, thus improving efficiency.

This invention belongs to the field of end mill technology, specifically disclosing an internally cooled double-walled end mill assembly. Addressing the technical shortcomings of existing internally cooled end mills, such as uneven cooling, unadjustable flow rate, easy clogging of flow channels, and high heat conduction loss, the invention optimizes the structural design. The end mill assembly includes an end mill head, a clamping block, an end mill disc, a quick-release head, an inner pad, and a cooling channel. The quick-release head is fixed to the end mill disc. The clamping block, in conjunction with the inner pad, clamps and positions the end mill head while simultaneously blocking heat conduction. A through cooling channel is formed between the quick-release head and the end mill disc. The end mill disc has a built-in cooling pipe, with a flow rod and flow spring inside to form a hydraulic flow control structure, which, combined with the centrifugal force of cutting, assists in regulating the coolant flow rate. Near the end mill head, the cooling channel is divided into a first and a second cooling chamber, forming an independent double-walled internal cooling flow path. The inner pad has a tapered tube and internal cooling holes, and the quick-release head has staggered external cooling holes. Both the internal and external cooling holes adopt a variable diameter structure with a coarser inlet and a smaller outlet.

The invention relates to the technical field of mechanical cutting machining, in particular to a long overhanging milling cutter with a vibration damping structure for deep cavity machining, which comprises a cutter handle section adaptively connected with a machining center spindle, the lower end of the cutter handle section is connected with a transition section through a vibration damping assembly, and a milling cutter section is mounted at the lower end of the transition section. By designing a triple vibration reduction structure of magnetic repulsive force, spring elasticity and damping friction, the vibration reduction effect is comprehensively improved, the chatter problem of the long overhanging milling cutter is solved, the machining stability is improved, the length-adjustable transition section is designed in a matched mode, and the vibration reduction effect of the long overhanging milling cutter is improved. The concentricity and the rigidity are optimized, meanwhile, the stability of structural connection and the adjusting precision are guaranteed, it is guaranteed that the cutter cannot move after being adjusted, the device is suitable for machining of deep cavities of different depths, the cutter replacing cost is reduced, and the machining efficiency is improved.