Multi-flank high-strength milling cutter structure

Abstract

The application discloses a multi-edge-surface high-strength milling cutter structure and relates to the technical field of milling cutters. The milling cutter structure comprises a cutter bar and a plurality of cutting units arranged at the end of the cutter bar. The cutting unit comprises a first cutter head and a second cutter head. The first cutter head comprises a first long edge surface, a second long edge surface and a first cutter groove. The second cutter head comprises a first short edge surface, a second short edge surface and a second cutter groove. The first long edge surface, the second long edge surface, the first short edge surface and the second short edge surface are distributed in a staggered manner along the circumference of the cutter bar. In the application, two first cutter heads and four second cutter heads are distributed in a staggered manner, so that the cutting force is uniformly dispersed on different edge surfaces, and the local force is prevented from being too large. The force mode effectively prevents the resonance of the whole milling cutter, reduces the tool wear, makes the long and short edge surface wear relatively uniform, prolongs the service life of the milling cutter and enhances the adaptability of the tool to different machining materials and working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of milling cutter, in particular to a multi-flank high-strength milling cutter structure. BACKGROUND

[0002] A milling cutter is a rotating tool with one or more teeth used for milling. Each tooth cuts off the excess of the workpiece intermittently in turn. Milling cutters are mainly used for machining planes, steps, grooves, shaped surfaces and cutting off workpieces on milling machines.

[0003] At present, most milling cutters have the problem of insufficient strength in structural design. The cutter bar part is mostly made of conventional solid or simple hollow structure. When bearing a large cutting force, deformation or even fracture may occur. Moreover, the existing milling cutter cannot adaptively adjust its own structural strength when facing different thickness and hardness of workpieces. It lacks adjustable reinforcing components and is difficult to meet the requirements of complex and variable machining conditions. This not only shortens the service life of the milling cutter and increases the production cost due to frequent tool replacement, but also makes it difficult to guarantee stable machining precision and surface quality, and cannot meet the requirements of modern manufacturing for high efficiency and high precision machining. In addition, most existing milling cutters are prone to vibration, especially resonance, which seriously affects the machining precision and greatly shortens the service life of the cutter. Therefore, a multi-flank high-strength milling cutter structure is needed to solve the above problems. SUMMARY

[0004] In view of the problems in the related art, the present application proposes a multi-flank high-strength milling cutter structure to overcome the above technical problems existing in the prior art.

[0005] The technical solution of the present application is as follows:

[0006] A multi-flank high-strength milling cutter structure, comprising a cutter bar and a plurality of cutting units arranged at the end of the cutter bar, the cutting unit comprising a first cutter head and a second cutter head, the first cutter head comprising a first long flank, a second long flank and a first cutter groove, the second cutter head comprising a first short flank, a second short flank and a second cutter groove, the first long flank, the second long flank, the first short flank and the second short flank being distributed in a staggered manner along the circumference of the cutter bar, and the cutting force distribution of the first cutter head and the second cutter head being in a cooperative cutting mode to reduce cutting force fluctuation and disperse local load.

[0007] The inside of the cutter bar is provided with a cooling assembly for cooling the first cutter head and the second cutter head.

[0008] The outer wall of the cutter bar is provided with a reinforcing assembly and a displacement assembly for adjusting the position of the reinforcing assembly.

[0009] Further, the reinforcing assembly comprises a reinforcing pipe sleeved on the outer circumferential wall of the cutter bar, the reinforcing pipe is in a honeycomb structure, the inner circumferential wall of the reinforcing pipe is fixedly connected with a reinforcing rod, the cross section of the reinforcing rod is in an arc shape, and one side of the reinforcing rod is tightly attached to the outer circumferential wall of the cutter bar.

[0010] Further, the displacement assembly comprises a fixed disc fixedly connected to the outer circumferential wall of the cutter bar, the bottom outer wall of the fixed disc is fixedly connected with a first spring, the bottom end of the first spring is fixedly connected with a movable disc, the movable disc is fixedly connected with the reinforcing pipe, and the inner circumferential wall of the movable disc is in contact with the outer circumferential wall of the cutter bar.

[0011] Further, the outer circumferential wall of the cutter bar is provided with a sliding groove, and the sliding groove is slidably connected with a sliding rod, one end of the sliding rod is fixedly connected to the inner circumferential wall of the movable disc.

[0012] Further, the cooling assembly comprises a liquid injection hole arranged on the top of the cutter bar, the inner part of the cutter bar is respectively provided with a liquid distribution groove and a flow guide groove, the cross section of the flow guide groove is in a spiral shape, the two ends of the flow guide groove are respectively connected with the liquid injection hole and the liquid distribution groove, and the liquid outlet holes are arranged on one side of the first cutter groove and the second cutter groove, and the liquid outlet holes are connected with the liquid distribution groove.

[0013] Further, the outer circumferential wall of the cutter bar is provided with a chip removal groove for guiding the first cutter head and the second cutter head, the outer wall of the chip removal groove on the second cutter head is provided with a corrugated groove, the corrugated groove is used for changing the flow path of the chip, dividing the chip and reducing the friction between the chip and the chip removal groove.

[0014] Further, the bottom end of the reinforcing pipe is fixedly connected with a connecting disc, the bottom outer wall of the connecting disc is provided with rolling grooves which are circularly distributed at equal distances, and the rolling grooves are internally provided with rolling balls.

[0015] Further, the connecting disc is internally provided with a cleaning assembly driven by centrifugal force, the cleaning assembly comprises a movable rod, a brush plate, brush hairs, a second spring, a movable groove and a sliding block, the sliding block slides in the movable groove, the sliding block is fixedly connected with the movable rod, the movable rod is extended outward along the movable groove under the action of centrifugal force, and the brush plate is driven to dynamically clean the machining area, the number of the second springs is two, the elastic coefficients of the two second springs are different, so that the complementary coverage of the cleaning area is realized, one side of the other brush plate is fixedly connected with a connecting rod, and the connecting rod is fixedly connected to the outer circumferential wall of the connecting disc.

[0016] Further, the bottom outer wall of the connecting disc is provided with second through grooves distributed at equal distances, the top of the connecting disc is provided with first through grooves distributed in a circular shape at equal distances, the first through grooves are communicated with the second through grooves, and the circumferential inner wall of the second through grooves is provided with arc grooves for expanding the chip removal area.

[0017] Further, the third through groove is located directly above the first through groove.

[0018] The present application has the following beneficial effects:

[0019] The multi-flank high-strength milling cutter structure provided by the present application has the following advantages: the first cutter head and the second cutter head are arranged, the long flanks of the first cutter head bear the main cutting task by virtue of the large cutting edge length, a large amount of material can be quickly removed, the short flanks of the second cutter head perform supplementary cutting and surface finishing during the cutting interval of the long flanks or at specific positions, the two flanks work together to improve the cutting efficiency, reasonably distribute the cutting force, reduce the cutting force fluctuation, and make the cutting force evenly dispersed on different flanks to avoid excessive local stress, the stress mode effectively prevents the resonance of the entire milling cutter, reduces the tool wear, makes the long and short flanks wear relatively uniformly, prolongs the service life of the milling cutter, and enhances the adaptability of the tool to different machining materials and working conditions.

[0020] Meanwhile, the wave grooves are arranged on the outer wall of the chip removal groove at the four second cutter heads, the wave grooves can change the chip flow path, increase the surface area of the chip removal groove, reduce the friction between the chip and the chip removal groove wall, and divide and crush the chip, so that the chip can be smoothly discharged, a large amount of heat is taken away by the quickly discharged chip, the cutting temperature is effectively reduced, the milling cutter can work at a suitable temperature, and the performance and service life of the milling cutter are further improved.

[0021] When the milling hole is machined, the connecting disc is abutted against the surface of the workpiece under the action of the first spring, rotates together with the cutter bar, the ball at the bottom of the connecting disc cooperates with the rolling groove to prevent the connecting disc from directly contacting the surface of the workpiece and scratching the workpiece, the first spring keeps the connecting disc abutting against the surface of the workpiece to ensure the stability of the milling hole machining, and the machining precision is improved, in addition, the chips generated during the milling cutter work are discharged through the chip removal groove, then pass through the second through groove, and are thrown out by the centrifugal force generated by the rotation of the connecting disc, the arc grooves distributed at equal distances in the second through groove further accelerate the chip discharge efficiency and ensure the stability of the chip removal, and support high-precision machining.

[0022] The application provides a multi-blade high-strength milling cutter structure, in the milling cutter structure machining process, the honeycomb-shaped reinforcing pipe cooperates with the arc-shaped reinforcing rod to tightly adhere to the outer wall of the cutter bar, the honeycomb structure reduces the weight of the milling cutter, and the hollow design is favorable for chip discharge; the arc-shaped reinforcing rod makes the reinforcing area of the cutter bar more uniform, and avoids reinforcing dead angles; since the reinforcing pipe is fixed at the bottom of the movable disc, when machining workpieces with different thicknesses, the sliding rod can slide in the sliding groove, so that the positions of the reinforcing pipe and the reinforcing rod are adjusted, the adaptive adjustment of the reinforcing area of the milling cutter is realized, the good reinforcing effect on the cutter bar is always ensured, and the strength of the whole milling cutter is further improved.

[0023] The application provides a multi-blade high-strength milling cutter structure, in the milling cutter structure machining process, the honeycomb-shaped reinforcing pipe cooperates with the arc-shaped reinforcing rod to tightly adhere to the outer wall of the cutter bar, the honeycomb structure reduces the weight of the milling cutter, and the hollow design is favorable for chip discharge; the arc-shaped reinforcing rod makes the reinforcing area of the cutter bar more uniform, and avoids reinforcing dead angles; since the reinforcing pipe is fixed at the bottom of the movable disc, when machining workpieces with different thicknesses, the sliding rod can slide in the sliding groove, so that the positions of the reinforcing pipe and the reinforcing rod are adjusted, the adaptive adjustment of the reinforcing area of the milling cutter is realized, the good reinforcing effect on the cutter bar is always ensured, and the strength of the whole milling cutter is further improved.

[0024] The application provides a multi-blade high-strength milling cutter structure, in the milling cutter machining process, the cutting fluid added to the liquid injection hole flows into the distribution groove in a spiral shape, and finally is discharged through the liquid outlet hole, so that the first cutter head and the second cutter head are effectively cooled, and the service life of the cutter head is prolonged. The spiral-shaped flow guide groove is different from the traditional hollow flow guide groove, the unique spiral direction makes the cutter bar material bear more balanced force in all directions, avoids stress concentration, and uniformly disperses the internal stress of the cutter bar while realizing the functions of cooling liquid delivery and heat dissipation. Moreover, the spiral structure is matched with the rotating motion direction of the cutter bar, in the cutter rotating cutting process, the centrifugal force can be used to assist the flow of the cooling liquid, improve the flow efficiency, and also can enhance the torsional strength of the cutter bar to a certain extent, ensure that the cutter bar maintains good structural stability and strength when bearing complex loads such as cutting force, and takes into account the functionality and structural strength. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 It is a whole front structure schematic diagram of the present application.

[0027] Figure 2 Fig. 1 is a schematic diagram of the overall structure of the present application.

[0028] Figure 3 Fig. 2 is a schematic diagram of the enlarged structure at A in the present application. Figure 2

[0029] Figure 4 Fig. 3 is a schematic diagram of the enlarged structure at B in the present application. Figure 2

[0030] Figure 5 Fig. 4 is a schematic diagram of the bottom view of the present application.

[0031] Figure 6 Fig. 5 is a schematic diagram of the enlarged structure at C in the present application. Figure 5

[0032] Figure 7 Fig. 6 is a schematic diagram of the overall half-section view of the present application.

[0033] Figure 8 Fig. 7 is a schematic diagram of the enlarged structure at D in the present application. Figure 7

[0034] Figure 9 Fig. 8 is a schematic diagram of the section view of the connecting disc of the present application.

[0035] Figure 10 Fig. 9 is a schematic diagram of the enlarged structure at E in the present application. Figure 9

[0036] Figure 11 Fig. 10 is a schematic diagram of the split structure of the reinforcing pipe in the present application.

[0037] In the figure:

[0038] 1. cutter bar; 2. fixed disc; 3. first spring; 4. movable disc; 5. reinforcing pipe; 6. connecting disc; 7. brush plate; 8. bristles; 9. connecting rod; 10. chip removal groove; 11. first cutter head; 1101. first long cutting edge; 1102. first cutter groove; 1103. second long cutting edge; 12. second cutter head; 1201. first short cutting edge; 1202. second cutter groove; 1203. second short cutting edge; 13. corrugated groove; 14. first through groove; 15. sliding groove; 16. reinforcing rod; 17. ball; 18. rolling groove; 19. second through groove; 20. arcuate groove; 21. liquid outlet hole; 22. flow guide groove; 24. sliding rod; 25. liquid injection hole; 26. liquid separation groove; 27. sliding block; 28. movable rod; 29. movable groove; 30. second spring; 31. third through groove. DETAILED DESCRIPTION

[0039] ​​​​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0040] Please refer to Figures 1-11 A multi-flank high-strength milling cutter structure, comprising a cutter bar 1 and a plurality of cutting units arranged at the end of the cutter bar 1, the cutting units comprising a first cutter head 11 and a second cutter head 12, the first cutter head 11 comprising a first long flank 1101, a second long flank 1103, and a first cutter groove 1102, the second cutter head 12 comprising a first short flank 1201, a second short flank 1203, and a second cutter groove 1202, the first long flank 1101 and the second long flank 1103 being staggered along the circumference of the cutter bar 1 with the first short flank 1201 and the second short flank 1203, and the cutting force distribution of the first cutter head 11 and the second cutter head 12 being in a cooperative cutting mode to reduce cutting force fluctuation and disperse local load;

[0041] The inside of the cutter bar 1 is provided with a cooling assembly for cooling the first cutter head 11 and the second cutter head 12;

[0042] The outer wall of the cutter bar 1 is provided with a reinforcing assembly and a displacement assembly for adjusting the position of the reinforcing assembly. This cooperative cutting mode makes the long flanks of the first cutter head 11 undertake the main cutting task, and the short flanks of the second cutter head 12 perform supplementary cutting and surface finishing, which not only improves cutting efficiency, but also reduces cutting force fluctuation, disperses local load, prevents milling cutter resonance, prolongs service life, and enhances adaptability to different machining materials and working conditions. At the same time, the cooling assembly inside the cutter bar 1, the reinforcing assembly on the outer wall, and the displacement assembly for adjusting the position of the reinforcing assembly, respectively realize cutter head cooling, cutter bar 1 strength reinforcement, and reinforcing assembly position adjustment, further improving the performance of the milling cutter.

[0043] Preferably, the reinforcing assembly comprises a reinforcing pipe 5 sleeved on the circumferential outer wall of the cutter bar 1, the reinforcing pipe 5 is in a honeycomb structure, the circumferential inner wall of the reinforcing pipe 5 is fixedly connected with a reinforcing rod 16, the cross section of the reinforcing rod 16 is arc-shaped, one side of the reinforcing rod 16 is tightly attached to the circumferential outer wall of the cutter bar 1, the honeycomb structure reduces the weight of the milling cutter and is beneficial to chip removal, and the arc-shaped reinforcing rod 16 makes the reinforcing area of the cutter bar 1 uniform, avoiding reinforcing dead angles, and the two work together to effectively enhance the strength of the cutter bar 1.

[0044] Preferably, the displacement assembly comprises a fixed disc 2 fixedly connected to the outer circumferential wall of the cutter bar 1, the bottom outer wall of the fixed disc 2 is fixedly connected with a first spring 3, the bottom end of the first spring 3 is fixedly connected with a movable disc 4, the movable disc 4 is fixedly connected with the reinforcing pipe 5, the inner circumferential wall of the movable disc 4 is in contact with the outer circumferential wall of the cutter bar 1, when machining workpieces of different thicknesses, the sliding rod 24 slides in the sliding groove 15, driving the movable disc 4 and the reinforcing pipe 5 to move, so as to adjust the positions of the reinforcing pipe 5 and the reinforcing rod 16, so that the milling cutter can adaptively adjust the reinforcing area according to the thickness of the workpiece, and always maintain good reinforcing effect, improve the strength and applicability of the milling cutter, the outer circumferential wall of the cutter bar 1 is provided with the sliding groove 15, the sliding rod 24 is slidably connected in the sliding groove 15, and one end of the sliding rod 24 is fixedly connected to the inner circumferential wall of the movable disc 4.

[0045] Preferably, the cooling assembly comprises a liquid injection hole 25 formed in the top of the cutter bar 1, the inner part of the cutter bar 1 is respectively provided with a distribution groove 26 and a flow guide groove 22, the cross section of the flow guide groove 22 is spiral, and the two ends of the flow guide groove 22 are respectively connected with the liquid injection hole 25 and the distribution groove 26, the first cutter groove 1102 and the second cutter groove 1202 are respectively provided with a liquid outlet hole 21, the liquid outlet hole 21 is connected with the distribution groove 26, and the cutting fluid added by the worker into the liquid injection hole 25 flows into the distribution groove 26 through the spiral flow guide groove 22 and is discharged through the liquid outlet hole 21, so as to cool the first cutter head 11 and the second cutter head 12. The spiral flow guide groove 22 is matched with the rotation direction of the cutter bar 1, the centrifugal force is used to assist the flow of the cooling liquid, the flow guide efficiency is improved, the stress of the material of the cutter bar 1 is balanced, stress concentration is avoided, the torsional strength of the cutter bar 1 is enhanced, and the cooling liquid conveying and the structural strength of the cutter bar 1 are considered.

[0046] Preferably, the outer wall of the cutter bar 1 is provided with a chip removal groove 10 for guiding the first cutter head 11 and the second cutter head 12, the outer wall of the chip removal groove 10 located on the second cutter head 12 is provided with a corrugated groove 13, the corrugated groove 13 is used for changing the chip flow path, dividing the chips and reducing the friction between the chips and the chip removal groove 10, the corrugated groove 13 changes the chip flow path, increases the surface area of the chip removal groove 10, reduces the friction between the chip and the wall of the chip removal groove 10, divides and crushes the chips, makes the chips more smoothly discharged, takes away a large amount of heat, reduces the cutting temperature, ensures that the milling cutter works at a suitable temperature, and improves the performance and service life of the milling cutter.

[0047] Preferably, the bottom end of the reinforcing pipe 5 is fixedly connected with a connecting disc 6, the bottom outer wall of the connecting disc 6 is provided with rolling grooves 18 distributed in a circular shape at equal distances, and the inside of the rolling grooves 18 is provided with rolling balls 17. When milling or other processing is performed, the connecting disc 6 is abutted against the surface of the workpiece under the action of the first spring 3, rotates with the cutter bar 1, and the rolling balls 17 cooperate with the rolling grooves 18 to avoid the direct contact of the bottom of the connecting disc 6 with the surface of the workpiece, thereby preventing the workpiece from being scratched. At the same time, the first spring 3 keeps the abutment force of the connecting disc 6, ensures the stability of the milling work, improves the processing precision, and the debris generated during the milling work is discharged through the chip removal groove 10, then passes through the second through groove 19 in sequence, and is thrown out by using the centrifugal force generated by the rotation of the connecting disc 6. The arc-shaped grooves 20 distributed at equal distances in the second through groove 19 further accelerate the debris discharge efficiency and ensure the stability of the chip removal.

[0048] Preferably, the connecting disc 6 is provided with a centrifugal force driven cleaning assembly, which includes a movable rod 28, a brush plate 7, brush hairs 8, a second spring 30, a movable groove 29 and a sliding block 27. The sliding block 27 slides in the movable groove 29, the sliding block 27 is fixedly connected with the movable rod 28, the movable rod 28 extends outward along the movable groove 29 under the action of the centrifugal force, drives the brush plate 7 to dynamically clean the processing area, and the number of the second springs 30 is two. The elastic coefficients of the two second springs 30 are different to realize the complementary coverage of the cleaning area. One side of the other brush plate 7 is fixedly connected with a connecting rod 9, and the connecting rod 9 is fixedly connected to the circumferential outer wall of the connecting disc 6. When the milling cutter structure is processed, the rotation of the connecting disc 6 generates centrifugal force to drive the sliding block 27 in the movable groove 29, and then drives the movable rod 28 and the brush plate 7 to spread outward. The higher the rotating speed of the milling cutter is, the greater the centrifugal force generated by the connecting disc 6 is, and the greater the extension amount of the movable rod 28 from the movable groove 29 is. The cleaning area of the brush hairs 8 at the bottom of the brush plate 7 expands accordingly. The second springs 30 with different elastic coefficients in the two movable grooves 29 make the extension amounts of the two movable rods 28 different under the same centrifugal force. In combination with the connecting rod 9 and the brush plate 7 fixed to the outer wall of the connecting disc 6, the three brush plates 7 and brush hairs 8 form a complementary cleaning area to avoid cleaning dead angles and keep the processing environment clean.

[0049] Preferably, the bottom outer wall of the connecting disc 6 is provided with second through grooves 19 distributed at equal distances, the top of the connecting disc 6 is provided with first through grooves 14 distributed in a circular shape at equal distances, the first through grooves 14 are communicated with the second through grooves 19, the circumferential inner wall of the second through grooves 19 is provided with arc-shaped grooves 20 for expanding the chip removal area, the third through groove 31 is formed in the end of the reinforcing rod 16 close to the connecting disc 6, and the third through groove 31 is located directly above the first through groove 14. The design of the through grooves makes the chips generated by the milling cutter work flow more smoothly through the chip removal groove 10, the third through groove 31, the first through groove 14 and the second through groove 19, and the rotating centrifugal force of the connecting disc 6 accelerates the chip removal speed and ensures the stability of the chip removal, thereby providing support for high-precision machining.

[0050] In summary, by means of the above technical solutions of the present application: since the first cutter head 11 and the second cutter head 12 are arranged at the end of the milling cutter arbor 1, and the lengths of the first long blade surface 1101 and the second long blade surface 1103 in the first cutter head 11 are longer than those of the first short blade surface 1201 and the second short blade surface 1203 in the second cutter head 12, the long and short blade surfaces in the first cutter head 11 and the second cutter head 12 cooperate with each other, the long blade surfaces bear the main cutting task to quickly remove a large amount of material, and the short blade surfaces assist in cutting and perform surface finishing, the synergistic effect of the two improves the cutting efficiency and machining precision, reasonably distributes the cutting force, improves the chip removal effect, prevents chip winding and cutting force fluctuation, and simultaneously, the two first cutter heads 11 and the four second cutter heads 12 are staggered, so that the cutting force of the milling cutter is reasonably distributed between the long and short blade surfaces, the local stress is avoided to be too large, the resonance of the entire milling cutter is effectively prevented, the degree of tool wear is reduced, the long and short blade surfaces are relatively uniformly worn, the service life of the entire milling cutter is prolonged, and the adaptability of the tool to different machining materials and working conditions is enhanced;

[0051] Meanwhile, the wave grooves are formed in the outer wall of the chip removal groove 10 at the four second cutter heads 12, the chip flow path can be changed, the surface area is increased to reduce the friction, the chips are divided and broken, so that the chip removal path is optimized and the chip removal capacity is enhanced, the chips are quickly removed to take away heat, and the cutting temperature is reduced;

[0052] When the milling hole and other processing need to be carried out through the milling cutter structure, the connecting disc 6 is abutted against the surface of the workpiece by the action of the first spring 3, and the connecting disc 6 rotates with the cutter bar 1 when the whole milling cutter rotates to mill the hole, in this process, the bottom of the connecting disc 6 can be effectively prevented from directly contacting the surface of the workpiece by the cooperation of the ball 17 and the rolling groove 18 arranged at the bottom of the connecting disc 6, which can prevent the connecting disc 6 from scratching the surface of the workpiece during rotation, and the bottom of the connecting disc 6 is abutted against the surface of the workpiece by the first spring 3, which can also make the whole milling hole work more stable and improve the machining precision of the milling cutter. The debris generated during the work of the milling cutter can be discharged through the chip removal groove 10, and the debris discharged from the chip removal groove 10 can be squeezed into the second through groove 19, then squeezed into the second through groove 19 through the second through groove 19, and finally thrown out by the centrifugal force generated during the rotation of the connecting disc 6, which ensures the stability of the whole milling cutter chip removal, and the arc-shaped grooves 20 arranged at equal distances in the second through groove 19 can effectively speed up the discharge efficiency of the debris;

[0053] During the machining of the milling cutter structure, the honeycomb-shaped reinforcing pipe 5 cooperates with the arc-shaped reinforcing rod 16 to tightly adhere to the circumferential outer wall of the cutter bar 1, thereby playing a good reinforcing role and further improving the strength of the whole milling cutter. Moreover, due to the unique honeycomb structure of the reinforcing pipe 5, the whole milling cutter can be made more lightweight, and the hollow honeycomb structure is also beneficial to the discharge of debris. Meanwhile, the arc-shaped reinforcing rod 16 can make the reinforcing area of the cutter bar 1 more uniform, avoiding the generation of a large number of reinforcing dead angles. Since the reinforcing pipe 5 is fixedly connected to the bottom of the movable disc 4, the position of the reinforcing pipe 5 and the reinforcing rod 16 can be effectively adjusted by the sliding of the sliding rod 24 in the sliding groove 15 during the work of the milling cutter, thereby ensuring that the reinforcing rod 16 and the reinforcing rod 16 can play a good reinforcing effect on the cutter bar 1 when the milling cutter structure is used to machine workpieces of different thicknesses, and realizing the adaptive adjustment of the reinforcing area of the milling cutter;

[0054] During the machining of the milling cutter structure, a certain centrifugal force can be generated by the rotation of the connecting disc 6, at this time, the sliding block 27 located in the movable groove 29 can be driven by the centrifugal force to spread the movable rod 28 and the brush plate 7 outward, and when the rotating speed of the milling cutter increases, the centrifugal force generated by the connecting disc 6 also increases, thereby gradually increasing the elongation of the movable rod 28 in the movable groove 29, thereby expanding the cleaning area of the brush 8 at the bottom of the brush plate 7. The second springs 30 arranged in the two movable grooves 29 have different elastic coefficients, thereby making the elongation of the two movable rods 28 different under the same centrifugal force. Finally, in cooperation with the connecting rod 9 and the brush plate 7 fixed on the outer wall of the connecting disc 6, the three groups of brush plates 7 and brushes 8 form a complementary cleaning area, effectively avoiding the occurrence of cleaning dead angles;

[0055] At the same time, in the process of milling cutter structure processing, in order to avoid the overheating of the milling cutter structure, cutting fluid is added into the liquid injection hole 25, the cutting fluid entering the liquid injection hole 25 flows into the liquid distribution groove 26 from the flow guide groove 22, and finally is discharged through the liquid outlet hole 21, so that the first cutter head 11 and the second cutter head 12 can be effectively cooled, the service life of the first cutter head 11 and the second cutter head 12 is prolonged, and since the flow guide groove 22 is distributed in a spiral shape inside the tool bar 1, the problem of the overall structural strength of the tool bar 1 being reduced due to the opening of the traditional hollow flow guide groove 22 is effectively avoided, compared with the linear or simply hollow flow guide groove 22, the spiral flow guide groove 22 can more evenly disperse the internal stress of the tool bar 1 while realizing the functions of cooling liquid delivery and heat dissipation, the spiral direction of the spiral flow guide groove 22 makes the stress of the tool bar 1 material in each direction more balanced, avoids the occurrence of stress concentration phenomenon, and the spiral structure is adapted to the rotation direction of the tool bar 1, in the process of cutter rotation cutting, the centrifugal force can be used to assist the flow of cooling liquid, improve the flow guide efficiency, and also can enhance the torsional strength of the tool bar 1 to a certain extent, ensure that the tool bar 1 can maintain good structural stability and strength when bearing complex loads such as cutting force, and balance the functionality and structural strength.

[0056] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-faceted high-strength milling cutter structure, comprising a cutter shank (1) and a plurality of cutting units disposed at the end of the cutter shank (1), characterized in that, The cutting unit includes a first cutting head (11) and a second cutting head (12). The first cutting head (11) includes a first long cutting edge (1101), a second long cutting edge (1103), and a first cutting groove (1102). The second cutting head (12) includes a first short cutting edge (1201), a second short cutting edge (1203), and a second cutting groove (1202). The first long cutting edge (1101), the second long cutting edge (1103), the first short cutting edge (1201), and the second short cutting edge (1203) are staggered along the circumference of the tool holder (1). The cutting force distribution of the first cutting head (11) and the second cutting head (12) is configured as a cooperative cutting mode to reduce cutting force fluctuations and disperse local loads. The tool holder (1) is internally provided with a cooling assembly for cooling the first cutting head (11) and the second cutting head (12); The outer wall of the tool holder (1) is provided with a reinforcing component and a displacement component for adjusting the position of the reinforcing component. The reinforcing component includes a reinforcing tube (5) sleeved on the outer circumference of the tool holder (1). The reinforcing tube (5) has a honeycomb structure. A reinforcing rod (16) is fixedly connected to the inner circumference of the reinforcing tube (5). The cross-section of the reinforcing rod (16) is arc-shaped. One side of the reinforcing rod (16) is close to the outer circumference of the tool holder (1). The displacement component includes a fixed disk (2) fixedly connected to the outer circumference of the tool holder (1). A first spring (3) is fixedly connected to the bottom outer wall of the fixed disk (2). A movable disk (4) is fixedly connected to the bottom end of the first spring (3). The movable disk (4) is fixedly connected to the reinforcing tube (5). The inner circumference of the movable disk (4) is in contact with the outer circumference of the tool holder (1). The bottom end of the reinforcing tube (5) is fixedly connected to a connecting plate (6). The outer circumference of the cutter bar (1) is provided with a chip discharge groove (10) for guiding the first cutter head (11) and the second cutter head (12). The outer wall of the chip discharge groove (10) located on the second cutter head (12) is provided with a corrugated groove (13). The corrugated groove (13) is used to change the chip flow path, divide the chips and reduce the friction between the chips and the chip discharge groove (10). The bottom outer wall of the connecting plate (6) is provided with a second through groove (19) distributed at equal intervals. The top of the connecting plate (6) is provided with a first through groove (14) distributed in a circular pattern at equal intervals. The first through groove (14) is connected to the second through groove (19). The inner circumference of the second through groove (19) is provided with an arc groove (20) for expanding the chip discharge area.

2. The multi-faceted high-strength milling cutter structure according to claim 1, characterized in that, The outer circumferential wall of the cutter bar (1) is provided with a groove (15), and a slide rod (24) is slidably connected inside the groove (15). One end of the slide rod (24) is fixedly connected to the inner circumferential wall of the movable disk (4).

3. The multi-faceted high-strength milling cutter structure according to claim 2, characterized in that, The cooling assembly includes a liquid injection hole (25) opened at the top of the blade (1). The blade (1) is provided with a liquid distribution groove (26) and a flow guide groove (22) respectively. The cross-section of the flow guide groove (22) is spiral. The two ends of the flow guide groove (22) are connected to the liquid injection hole (25) and the liquid distribution groove (26) respectively. The first blade groove (1102) and the second blade groove (1202) are provided with a liquid outlet hole (21) on one side. The liquid outlet hole (21) is connected to the liquid distribution groove (26).

4. The multi-faceted high-strength milling cutter structure according to claim 3, characterized in that, The bottom outer wall of the connecting plate (6) is provided with rolling grooves (18) that are evenly distributed in a circular pattern, and the inside of the rolling grooves (18) is provided with balls (17).

5. The multi-faceted high-strength milling cutter structure according to claim 4, characterized in that, The connecting plate (6) is equipped with a centrifugal force driven cleaning component. The cleaning component includes a movable rod (28), a brush plate (7), brush bristles (8), a second spring (30), a movable groove (29), and a slider (27). The slider (27) slides inside the movable groove (29). The slider (27) is fixedly connected to the movable rod (28). The movable rod (28) is extended outward along the movable groove (29) under the action of centrifugal force, driving the brush plate (7) to perform dynamic cleaning on the processing area. There are two second springs (30). The elastic coefficients of the two second springs (30) are configured differently to achieve complementary coverage of the cleaning area. A connecting rod (9) is fixedly connected to one side of the other brush plate (7). The connecting rod (9) is fixedly connected to the outer circumferential wall of the connecting plate (6).

6. The multi-faceted high-strength milling cutter structure according to claim 5, characterized in that, The reinforcing rod (16) has a third through groove (31) at one end near the connecting plate (6), and the third through groove (31) is located directly above the first through groove (14).

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