A high performance PCD close-tooth multi-edge forming milling cutter assembly

Abstract

The present invention relates to the technical field of forming tools, and specifically to a high-performance PCD dense-tooth multi-blade forming milling cutter assembly, comprising a lower milling cutter component, a transition component being screwed to the upper end of the lower milling cutter component, and an upper milling cutter component being coupled to the upper end of the transition component. The high-performance PCD dense-tooth multi-blade forming milling cutter assembly adopts a dense-tooth multi-blade structure design, and the peripheral blade adopts an integrated forming contour processing, which solves the problem that the number of blades of traditional PCD tools is affected by processing and manufacturing and cannot meet the requirements of high-precision machining surfaces. At the same time, the milling cutter assembly is designed into an upper, middle and lower three-section structure, which is not only easy to replace and install, but also can quickly adjust the milling angle of the milling cutter head according to machining requirements, reducing tool wear, avoiding the problem of broken blades caused by uneven force on the blade, and can meet the requirements of high-precision machining surfaces while increasing the service life of the tool.

Description

Technical Field

[0001] The invention relates to the technical field of forming cutters, in particular to a high-performance PCD close-tooth multi-blade forming milling cutter assembly. Background Art

[0002] In the processing of 3C electronic products, the outer frame structure of the mobile phone is formed by milling with a matching forming milling cutter. Since polycrystalline diamond PCD material has higher hardness and wear resistance than cemented carbide, a forming milling cutter made of PCD material can achieve higher quality processing results when milling aluminum alloy mobile phone frames, and its tool life will also be extended.

[0003] At present, most traditional PCD tool designs use the form of slotting and welding blades in the tool body to increase the number of tool blades. This structural design will cause the number of tool blades to be greatly affected by the tool diameter, and its spiral angle will also be affected by manufacturing and installation, making it difficult to match the needs of high-precision surface machining. In addition, traditional PCD tools are mostly installed at a fixed angle. When targeting different milling contours, it is difficult to adjust the milling angle according to its structural characteristics, which will not only increase tool wear, but also cause uneven milling force on the blade, resulting in broken blades, shortening the tool life, and reducing the surface machining quality of the part. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-performance PCD dense-tooth multi-blade forming milling cutter assembly, which adopts a dense-tooth multi-blade structural design, and the peripheral blade is processed by an integrated contour molding, which solves the problem that the number of blades of traditional PCD tools is affected by processing and manufacturing and cannot meet the requirements of high-precision machining surfaces. At the same time, the tool is designed into an upper, middle and lower three-section structure, which is not only convenient for replacement and installation, but also can quickly adjust the milling angle of the milling cutter head according to machining requirements, thereby reducing tool wear, avoiding the problem of blade breakage caused by uneven force on the blade, and can meet the requirements of high-precision machining surfaces while increasing the service life of the tool.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a high-performance PCD dense-tooth multi-blade forming milling cutter assembly, comprising a lower milling cutter component, the upper end of the lower milling cutter component is screwed with a transition component, and the upper end of the transition component is coupled with an upper milling cutter component;

[0006] Among them, the lower milling cutter component includes a milling cutter head with a dense-tooth multi-blade structure and a milling cutter body fixedly welded to the milling cutter head. The milling cutter head is made of diamond material, the milling cutter body is made of cemented carbide material, and the milling cutter head and the milling cutter body are welded using vacuum brazing technology.

[0007] Preferably, the upper milling cutter component includes a connecting handle, the upper end of the transition component is coupled with the connecting handle, an inverted "convex" groove is opened inside the lower end of the connecting handle, the lower end of the connecting handle is fixedly connected with an annular shoulder, the annular shoulder and the transition component are slidingly fitted together, a locking unit is fixedly arranged on the top of the "convex" groove, a No. 1 threaded hole is opened on the side wall of the "convex" groove near the upper end, a first drive unit is passed through the No. 1 threaded hole, a No. 2 threaded hole is opened on the side wall of the "convex" groove away from the first drive unit near the lower end, a second drive unit is passed through the No. 2 threaded hole.

[0008] Preferably, the lower milling cutter component includes a milling cutter body, a milling cutter head is welded to the lower end of the milling cutter body, a threaded column is fixedly connected to the upper end of the milling cutter body and the threaded column and the transition component are connected in a cooperative manner, the side wall of the upper end of the milling cutter body is evenly provided with lower connecting side plates along its circumference, and concave grooves are evenly opened on the outer side of the milling cutter body along its circumference.

[0009] Preferably, the transition component includes a transition handle, a transition handle is arranged on the upper end of the milling cutter body, an internal screw hole is opened in the middle of the lower end of the transition handle, the threaded column is screwed in the internal screw hole, and an upper connecting plate is evenly arranged on the circumferential side wall of the lower end of the transition handle, the upper connecting plate and the lower connecting side plate correspond to each other and are fixedly connected by fastening bolts, a "concave" groove is opened on the inner side of the upper end of the transition handle, an inner gear ring is fixedly arranged on the inner side wall of the "concave" groove near the lower end, a limiting gear is meshed on the inner side of the inner gear ring, the limiting gear is rotatably arranged at the lower end of the gear shaft, and the upper end of the gear shaft is fixedly installed at the lower end of the connecting handle.

[0010] Preferably, a scale line is provided on the upper end of the outer wall of the transition handle, a lubrication channel is evenly opened along the circumference of the upper end surface of the transition handle near the outer edge, an upper annular groove is opened at the lower end of the lubrication channel, an annular enclosure is provided on the outer side of the upper end of the lubrication channel, and the lower end of the annular enclosure is fixedly connected to the upper end surface of the transition handle.

[0011] Preferably, the inner side wall of the upper end of the "concave" type groove is evenly provided with limiting holes along its circumference.

[0012] Preferably, the outer edge of the upper end of the limiting gear is evenly provided with cylindrical holes along its circumference.

[0013] Preferably, the upper end surface of the annular shoulder is provided with a lower annular groove matching with the upper annular groove, and balls are evenly arranged in the lower annular groove along its circumferential direction.

[0014] Preferably, the locking unit includes an oil bag, an oil bag is fixedly installed on the top of the inner side of the "convex" groove, an extrusion spring is arranged inside the oil bag, a burette is symmetrically installed on the side wall of the upper end of the oil bag, the lower end of the burette extends to the outside of the connecting handle and faces the lubrication channel, a circular plate is fixedly connected to the lower end of the oil bag, a vertical rod is fixedly connected to the middle part of the lower end of the circular plate, a connecting block is fixedly arranged on the vertical rod near the upper end, and a pull rod is evenly hinged on the circumferential side wall of the connecting block, and the lower end of the pull rod is hinged to the end of the ball head locking rod. The side wall of the lower end of the "convex" groove is evenly provided with circular through holes along its circumferential direction, and the ball head locking rod is slidably arranged in the circular through hole.

[0015] Preferably, the first driving unit includes a first driving rod, which is slidably arranged in the No. 1 threaded hole, and the end of the first driving rod located on the inner side of the "convex" groove is fixedly connected to the No. 1 cam, and a No. 1 threaded section matching the No. 1 threaded hole is provided on the first driving rod at a position away from the No. 1 cam.

[0016] Preferably, the second driving unit includes a second driving rod, which is slidably arranged in the No. 2 threaded hole, and the end of the second driving rod located on the inner side of the "convex" groove is fixedly connected to the No. 2 cam, and a No. 2 threaded section matching the No. 2 threaded hole is provided on the second driving rod at a position away from the No. 2 cam.

[0017] Beneficial effects of the present invention:

[0018] 1) This high-performance PCD dense-tooth multi-edge forming milling cutter assembly adopts a dense-tooth multi-edge structure design, and the peripheral edge adopts an integrated contour processing, which solves the problem that the number of edges of traditional PCD tools is affected by processing and manufacturing and cannot meet the requirements of high-precision processing surfaces;

[0019] 2) The high-performance PCD dense-tooth multi-blade forming milling cutter assembly has an upper, middle and lower three-section structure. In actual use, it can be quickly installed and replaced according to the damaged position when damaged, which reduces the production cost. The locking unit can cooperate with the first drive unit to quickly adjust the milling angle of the milling cutter head according to the processing requirements, which not only reduces the wear of the tool and avoids the problem of broken blades caused by uneven force on the blade, but also can meet the requirements of high-precision surface processing while increasing the service life of the tool;

[0020] 3) The second drive unit can drive the oil bag to compress and squeeze out the lubricating oil inside it during the process of adjusting the milling angle of the milling cutter head, so as to reduce the friction between the transition handle and the connecting handle under the action of the lubrication channel, thereby facilitating manual and easy completion of the angle adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional connection structure of the lower milling cutter component in the present invention;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the transition component in the present invention;

[0025] Figure 4 is a schematic diagram of the three-dimensional structure of the transition component in the present invention from another viewing angle;

[0026] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the transition component in the present invention;

[0027] Figure 6 The present invention Figure 5 A schematic diagram of the enlarged structure at point A;

[0028] Figure 7 The present invention Figure 5 A schematic diagram of the enlarged structure at B;

[0029] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional connection structure of the transition component and the upper milling cutter component in the present invention;

[0030] Fig. 9 The present invention Figure 8 A schematic diagram of the enlarged structure at C;

[0031] Fig.10 It is a schematic diagram of the three-dimensional connection structure between the locking unit, the first driving unit and the second driving unit in the present invention;

[0032] In the figure:

[0033] 1. Lower milling cutter component; 11. Milling cutter head; 12. Milling cutter body; 13. Threaded column; 14. Lower connecting side plate;

[0034] 2. transition member; 21. transition handle; 211. scale line; 212. lubrication channel; 213. upper annular slide; 214. annular enclosure;

[0035] 22. Internal screw hole; 23. Upper connecting plate; 24. Fastening bolt; 25. "Concave" groove; 251. Limiting hole; 26. Internal gear ring; 27. Limiting gear; 271. Column hole; 28. Gear shaft;

[0036] 3. Upper milling cutter component; 31. Connecting handle; 32. "convex" groove; 33. Annular shoulder; 331. Lower annular groove; 332. Ball;

[0037] 34. Locking unit; 341. Oil bag; 342. Extrusion spring; 343. Round plate; 344. Vertical rod; 345. Connecting block; 346. Pull rod; 347. Ball head locking rod; 348. Burette;

[0038] 35. First driving unit; 351. First driving rod; 352. No. 1 threaded section; 353. No. 1 cam;

[0039] 36. Second driving unit; 361. Second driving rod; 362. No. 2 threaded segment; 363. No. 2 cam. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] Example 1: See Figures 1 to 9 The present embodiment provides a high-performance PCD dense-tooth multi-blade forming milling cutter assembly, which includes a lower milling cutter component 1, a transition component 2 and an upper milling cutter component 3; wherein the upper end of the lower milling cutter component 1 is screwed to the transition component 2, and the upper end of the transition component 2 is coupled to the upper milling cutter component 3.

[0042] The lower milling cutter component 1 includes a milling cutter head 11 with a dense-tooth multi-blade structure and a milling cutter body 12 fixedly welded to the milling cutter head 11. The milling cutter head 11 is made of diamond material, the milling cutter body 12 is made of cemented carbide material (such as tungsten steel fine-ground round rod), and the milling cutter head 11 and the milling cutter body 12 are welded by vacuum brazing technology. It can be seen that the lower milling cutter component 1 is a three-section structure, which is composed of the milling cutter head 11, the welding part and the milling cutter body 12.

[0043] The milling cutter head 11 is a cylindrical, dense-tooth, multi-blade structure. Specifically, the milling cutter head 11 includes a milling cutter head body, a peripheral blade, and an end blade. The peripheral blade is located in the circumference of the milling cutter head body and is used to process the contour of the workpiece; the end blade is located at the end of the milling cutter head body. In this embodiment, the diamond material used in the milling cutter head 11 has a grain size of 10 μm, a high hardness of up to 8000 HV, and a good thermal conductivity of 700 W / mK, which is 1.5 to 9 times that of cemented carbide.

[0044] Since the milling cutter head 11 is made of diamond material and the milling cutter body 12 is made of cemented carbide material, in order to achieve reliable connection between the milling cutter head 11 and the milling cutter head 12, the two are welded by vacuum brazing technology. During welding, the vacuum degree is 10-8, and the filler added during brazing is a silver-based brazing filler (silver-based brazing filler has good fluidity and welding strength).

[0045] The manufacturing process of the lower milling cutter component 1 is as follows:

[0046] 1) Select columnar PCD (diamond) material with a particle size of 10 microns. This material is wear-resistant and can effectively increase the life of the milling cutter head when used as a cutting edge;

[0047] 2) Using vacuum welding technology, the columnar PCD material and the tungsten steel fine-ground round rod are welded in a vacuum chamber. Since it is carried out in a vacuum environment, the welding quality and welding strength can be improved, and the welding strength can reach 50Mpa;

[0048] 3) Run 3D software (such as UG), draw a 3D model according to the design structure of the lower milling cutter component 1, and optimize the laser processing path;

[0049] 4) Milling cutter head structural parameter scheme: tool blade diameter D10, number of teeth: 50, helix angle 15°, tooth width 0.45-0.6mm, tooth depth 0.5-0.7mm;

[0050] 5) Use five-axis DMG laser precision processing equipment to perform laser etching on 50 cutting edges. Each cutting edge not only ensures the tool geometry (front / back angle, blade length, etc.), but also ensures that the profile tolerance and PCD forming profile circular runout are within 5μm, and the surface roughness of the tool rake face and back face is less than 0.2μm. The laser processing parameters are: laser power (20-60) W, laser incident angle 5°, laser feed 200-500mm / min, layered cutting depth 0.3mm, layered cutting width 0.06mm, and the laser spot performs layered processing on the PCD dense tooth multi-edge tooth shape from top to bottom;

[0051] 6) Inputting the laser processing programming software according to the 3D model to compile the corresponding processing program, and finally processing the tooth shape of the PCD close-tooth multi-edge tool based on the processing program to obtain the final structure of the milling cutter head 11.

[0052] A threaded column 13 is fixedly connected to the upper end of the milling cutter body 12 and the threaded column 13 is connected to the transition member 2 in cooperation. A lower connecting side plate 14 is evenly arranged on the side wall of the upper end of the milling cutter body 12 along its circumference, and a concave groove is evenly opened on the outer side of the milling cutter body 12 along its circumference.

[0053] The transition component 2 includes a transition handle 21, a transition handle 21 is provided on the upper end of the milling cutter body 12, an inner screw hole 22 is provided in the middle of the lower end of the transition handle 21, and the threaded column 13 is screwed into the inner screw hole 22, and an upper connecting plate 23 is evenly provided on the circumferential side wall of the lower end of the transition handle 21, the upper connecting plate 23 corresponds to the lower connecting side plate 14 and the two are fixedly connected by fastening bolts 24, a "concave" groove 25 is provided on the inner side of the upper end of the transition handle 21, and the inner side wall of the upper end of the "concave" groove 25 is evenly provided with limiting holes 251 along its circumference, and an inner gear ring 26 is fixedly provided on the inner side wall of the "concave" groove 25 near the lower end, and a limiting gear 27 is meshed on the inner side of the inner gear ring 26, and the limiting gear 27 is rotatably set at the lower end of the gear shaft 28, and the upper end of the gear shaft 28 is fixedly installed on the lower end of the connecting handle 31, and the outer edge of the upper end of the limiting gear 27 is evenly provided with a cylindrical hole 271 along its circumference.

[0054] A scale line 211 is provided at the upper end of the outer wall of the transition handle 21, and a lubrication channel 212 is evenly opened along its circumference near the outer edge of the upper end surface of the transition handle 21, an upper annular groove 213 is opened at the lower end of the lubrication channel 212, and an annular enclosure 214 is provided on the outer side of the upper end of the lubrication channel 212, and the lower end of the annular enclosure 214 is fixedly connected to the upper end surface of the transition handle 21.

[0055] During specific work, the threaded column 13 and the internal screw hole 22 are aligned by manually holding the concave groove on the outside of the milling cutter body 12, and then the milling cutter body 12 is rotated. With the cooperation of the threaded column 13 and the internal screw hole 22, the transition handle 21 and the milling cutter body 12 are fixedly connected, and then the upper connecting plate 23 and the lower connecting side plate 14 are fixedly installed by tightening the bolts 24, thereby playing a role of further reinforcement.

[0056] Embodiment 2: The technical solution is basically the same as that of Embodiment 1, see Figure 1 as well as Figures 8 to 10 The difference is that: the upper end of the transition member 2 is coupled with an upper milling cutter member 3, and the upper milling cutter member 3 includes a connecting handle 31, and the upper end of the transition member 2 is coupled with a connecting handle 31. An inverted "convex" groove 32 is opened inside the lower end of the connecting handle 31, and an annular shoulder 33 is fixedly connected to the lower end of the connecting handle 31. The upper end surface of the annular shoulder 33 is provided with a lower annular groove 331 that matches the upper annular groove 213, and balls 332 are evenly arranged in the lower annular groove 331 along its circumferential direction. A locking unit 34 is fixedly arranged on the top of the "convex" groove 32, and a No. 1 threaded hole is opened near the upper end of the side wall of the "convex" groove 32, and a first driving unit 35 is penetrated in the No. 1 threaded hole. A No. 2 threaded hole is opened near the lower end of the side wall of the "convex" groove 32 away from the first driving unit 35, and a second driving unit 36 ​​is penetrated in the No. 2 threaded hole.

[0057] The locking unit 34 includes an oil bag 341, and the oil bag 341 is fixedly installed on the top of the inner side of the "convex" groove 32, and an extrusion spring 342 is arranged inside the oil bag 341. A burette 348 is symmetrically installed on the upper side wall of the oil bag 341, and the lower end of the burette 348 extends to the outside of the connecting handle 31 and faces the lubrication channel 212. A circular plate 343 is fixedly connected to the lower end of the oil bag 341, and a vertical rod 344 is fixedly connected to the middle part of the lower end of the circular plate 343. A connecting block 345 is fixedly arranged on the vertical rod 344 near the upper end, and a pull rod 346 is evenly hinged on the circumferential side wall of the connecting block 345. The lower end of the pull rod 346 is hinged to the end of the ball head locking rod 347. The lower end side wall of the "convex" groove 32 is evenly provided with circular through holes along its circumferential direction, and the ball head locking rod 347 is slidably arranged in the circular through hole.

[0058] The first driving unit 35 includes a first driving rod 351, which is slidably arranged in the No. 1 threaded hole. The end of the first driving rod 351 located on the inner side of the "convex" groove 32 is fixedly connected to the No. 1 cam 353, and a No. 1 threaded section 352 matching the No. 1 threaded hole is provided on the first driving rod 351 at a position away from the No. 1 cam 353.

[0059] The second driving unit 36 ​​includes a second driving rod 361, which is slidably arranged in the No. 2 threaded hole. The end of the second driving rod 361 located on the inner side of the "convex" groove 32 is fixedly connected to the No. 2 cam 363, and a No. 2 threaded section 362 that matches the No. 2 threaded hole is provided on the second driving rod 361 at a position away from the No. 2 cam 363.

[0060] When working, the upper end of the connecting handle 31 is manually fixed on the output end of the milling machine spindle. When working normally, the first driving rod 351 is manually pushed inward to make the No. 1 threaded section 352 contact the No. 1 threaded hole, and then the first driving rod 351 is rotated. At this time, the No. 1 cam 353 will rotate synchronously with the first driving rod 351 and squeeze the circular plate 343 downward. At this time, the squeezing spring 342 is stretched, and the vertical rod 344 and the connecting block 345 are driven to move downward through the circular plate 343. Under the action of 46, the end of the ball head locking rod 347 will be pressed against the limiting hole 251, so that the transition handle 21 and the connecting handle 31 are fixedly connected, and at the same time, the lower end of the vertical rod 344 will be inserted into the cylindrical hole 271 at the upper end of the limiting gear 27 and limit it. Due to the meshing action of the limiting gear 27 and the inner gear ring 26, the vertical rod 344 can play a role in secondary locking of the transition handle 21 and the connecting handle 31, thereby ensuring the stable operation of the high-performance PCD dense-tooth multi-blade forming milling cutter assembly;

[0061] When the milling angle needs to be adjusted, the milling machine is first stopped, and the first driving rod 351 is then rotated in the opposite direction to make the No. 1 threaded section 352 disengage from the No. 1 threaded hole, and then the first driving rod 351 is pulled outward, thereby driving the No. 1 cam 353 to disengage from the circular plate 343. At this time, the reaction force of the extrusion spring 342 will drive the circular plate 343 and the vertical rod 344 to reset. Under the action of the pull rod 346, the end of the ball head locking rod 347 will disengage from the limiting hole 251, and the lower end of the vertical rod 344 will also disengage from the cylindrical hole 271. At this time, the angle of the milling cutter head 11 relative to the milling workpiece can be adjusted by manually rotating the transition handle 21, thereby changing its milling angle. The setting of the ball 332 can reduce the friction between the transition handle 21 and the connecting handle 31, thereby facilitating the manual angle adjustment process, and the scale line 211 can enable the manual angle adjustment to be quickly determined.

[0062] The second drive rod 361 is manually pushed inward to make the second threaded segment 362 contact with the second threaded hole, and then the second drive rod 361 is rotated to achieve the purpose of driving the second cam 363 to rotate. The second cam 363 will generate an upward squeezing force on the circular plate 343 during the rotation. The squeezing force will drive the circular plate 343 to move upward and compress the oil bag 341 and the squeezing spring 342, and the lubricating oil in the oil bag 341 will be squeezed out and drip onto the upper end surface of the transition handle 21 through the burette 348. The setting of the annular enclosure 214 can prevent the lubricating oil from overflowing the upper end surface of the transition handle 21. The lubricating oil flows into the upper annular groove 213 and the lower annular groove 331 through the lubrication channel 212 and lubricates the ball 332, thereby further reducing the friction between the transition handle 21 and the connecting handle 31. In this way, the transition handle 21 can be easily rotated manually and the milling angle of the milling cutter head 11 can be adjusted.

[0063] The working principle of the present invention when in use:

[0064] One: manually hold the concave groove on the outside of the milling cutter body 12 to align the threaded column 13 and the internal screw hole 22, then rotate the milling cutter body 12, with the cooperation of the threaded column 13 and the internal screw hole 22, the transition handle 21 and the milling cutter body 12 are fixedly connected, and then the upper connecting plate 23 and the lower connecting side plate 14 are fixedly installed by tightening the bolts 24, thereby playing a role of further reinforcement;

[0065] When the first drive rod 351 is in the working state, the first cam 353 and the first drive rod 351 are rotated synchronously and the circular plate 343 is pressed downwardly. At this time, the pressing spring 342 is stretched, and the vertical rod 344 and the connecting block 345 are driven to move downwardly through the circular plate 343. Under the action of the pull rod 346, the end of the ball head locking rod 347 is pressed against the limiting hole 251, so that the transition handle 21 and the connecting handle 31 are fixedly connected. At the same time, the lower end of the vertical rod 344 is inserted into the cylindrical hole 271 at the upper end of the limiting gear 27 and limited. Due to the meshing action of the limiting gear 27 and the inner gear ring 26, the vertical rod 344 can play the role of secondary locking of the transition handle 21 and the connecting handle 31, thereby ensuring the stable operation of the high-performance PCD dense-tooth multi-blade forming milling cutter assembly.

[0066] 3: When the milling angle needs to be adjusted, the milling machine is first stopped, and the first driving rod 351 is then rotated in the opposite direction to make the No. 1 threaded section 352 disengage from the No. 1 threaded hole, and then the first driving rod 351 is pulled outward, thereby driving the No. 1 cam 353 to disengage from the circular plate 343. At this time, the reaction force of the extrusion spring 342 will drive the circular plate 343 and the vertical rod 344 to reset. Under the action of the pull rod 346, the end of the ball head locking rod 347 will disengage from the limiting hole 251, and the lower end of the vertical rod 344 will also disengage from the cylindrical hole 271. At this time, the angle of the milling cutter head 11 relative to the milling workpiece can be adjusted by manually rotating the transition handle 21, thereby changing its milling angle. The setting of the ball 332 can reduce the friction between the transition handle 21 and the connecting handle 31, thereby facilitating the manual angle adjustment process, and the scale line 211 can enable the manual angle adjustment to be quickly determined.

[0067] Fourth, after the milling angle is adjusted, the fixing effect between the transition handle 21 and the connecting handle 31 is completed again by manually repeating the above step 2, and then the high-performance PCD dense-tooth multi-edge forming milling cutter assembly continues to operate normally;

[0068] 5: During the above step 3, the second driving rod 361 is manually pushed inward to make the second threaded segment 362 contact with the second threaded hole, and then the second driving rod 361 is rotated to achieve the purpose of driving the second cam 363 to rotate. During the rotation, the second cam 363 will generate an upward squeezing force on the circular plate 343, and the squeezing force will drive the circular plate 343 to move upward and compress the oil bag 341 and the squeezing spring 342, and the lubricating oil in the oil bag 341 will be squeezed out and drip onto the upper end surface of the transition handle 21 through the burette 348. The setting of the annular enclosure 214 can prevent the lubricating oil from overflowing the upper end surface of the transition handle 21. The lubricating oil flows into the upper annular groove 213 and the lower annular groove 331 through the lubrication channel 212 and lubricates the ball 332, thereby further reducing the friction between the transition handle 21 and the connecting handle 31. In this way, the transition handle 21 can be easily rotated manually and the milling angle of the milling cutter head 11 can be adjusted.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-performance PCD close-tooth multi-edge forming milling cutter assembly, comprising a lower milling cutter component (1), characterized in that: The upper end of the lower milling cutter component (1) is screwed with a transition component (2), and the upper end of the transition component (2) is coupled with an upper milling cutter component (3); The lower milling cutter component (1) comprises a milling cutter head (11) with a dense-tooth multi-blade structure and a milling cutter body (12) fixedly welded to the milling cutter head (11); the milling cutter head (11) is made of diamond material, the milling cutter body (12) is made of cemented carbide material, and the milling cutter head (11) and the milling cutter body (12) are welded by vacuum brazing technology; The upper milling cutter component (3) comprises a connecting handle (31), the upper end of the transition component (2) is coupled with the connecting handle (31), the lower end of the connecting handle (31) is provided with an inverted "convex" groove (32), the lower end of the connecting handle (31) is fixedly connected with an annular shoulder (33), the annular shoulder (33) and the transition component (2) are slidably matched, a locking unit (34) is fixedly arranged at the top of the "convex" groove (32), a No. 1 threaded hole is provided at a position near the upper end of the side wall of the "convex" groove (32), a first driving unit (35) is inserted into the No. 1 threaded hole, and a No. 2 threaded hole is provided at a position near the lower end of the side wall of the "convex" groove (32) away from the first driving unit (35), a second threaded hole is inserted into the No. 2 threaded hole; The transition member (2) comprises a transition handle (21), a concave groove (25) is provided on the inner side of the upper end of the transition handle (21), and limiting holes (251) are uniformly provided on the inner side wall of the upper end of the concave groove (25) along its circumference; The locking unit (34) comprises an oil bag (341), the oil bag (341) is fixedly mounted on the top of the inner side of the "convex" groove (32), a pressing spring (342) is arranged inside the oil bag (341), a burette (348) is symmetrically mounted on the upper side wall of the oil bag (341), the lower end of the burette (348) extends to the outside of the connecting handle (31) and faces the lubrication channel (212), and the lower end of the oil bag (341) is fixedly connected to the circular plate (34 3) A vertical rod (344) is fixedly connected to the middle of the lower end of the circular plate (343), a connecting block (345) is fixedly arranged near the upper end of the vertical rod (344), a pull rod (346) is evenly hinged to the circumferential side wall of the connecting block (345), the lower end of the pull rod (346) is hinged to the end of the ball head locking rod (347), and a circular through hole is evenly opened along the circumferential direction of the lower end side wall of the "convex" groove (32), and the ball head locking rod (347) is slidably arranged in the circular through hole; When the end of the ball head locking rod (347) is pressed tightly against the limiting hole (251), the transition handle (21) and the connecting handle (31) are fixedly connected.

2. A high-performance PCD close-tooth multi-edge forming milling cutter assembly according to claim 1, characterized in that: The upper end of the milling cutter body (12) is fixedly connected with a threaded column (13), and the threaded column (13) and the transition member (2) are connected in a cooperative manner. The upper end side wall of the milling cutter body (12) is evenly provided with lower connecting side plates (14) along its circumference, and the outer side of the milling cutter body (12) is evenly provided with concave grooves along its circumference.

3. A high performance PCD close-tooth multi-edge forming milling cutter assembly according to claim 2, characterized in that: A transition handle (21) is provided at the upper end of the milling cutter body (12), an inner screw hole (22) is provided in the middle of the lower end of the transition handle (21), a threaded column (13) is screwed into the inner screw hole (22), an upper connecting plate (23) is evenly provided on the circumferential side wall of the lower end of the transition handle (21), the upper connecting plate (23) corresponds to the lower connecting side plate (14) and the two are fixedly connected by a fastening bolt (24), an inner gear ring (26) is fixedly provided at a position near the lower end of the inner side wall of the "concave" groove (25), a limit gear (27) is meshed inside the inner side of the inner gear ring (26), the limit gear (27) is rotatably provided at the lower end of the gear shaft (28), and the upper end of the gear shaft (28) is fixedly installed at the lower end of the connecting handle (31).

4. A high performance PCD close-tooth multi-edge forming milling cutter assembly according to claim 3, characterized in that: The upper end of the outer wall of the transition handle (21) is provided with a scale line (211); a lubrication channel (212) is evenly provided along its circumference at a position close to the outer edge of the upper end surface of the transition handle (21); an upper annular groove (213) is provided at the lower end of the lubrication channel (212); an annular enclosure (214) is provided on the outer side of the upper end of the lubrication channel (212); and the lower end of the annular enclosure (214) is fixedly connected to the upper end surface of the transition handle (21).

5. A high performance PCD close-tooth multi-edge forming milling cutter assembly according to claim 4, characterized in that: The outer edge of the upper end of the limiting gear (27) is evenly provided with cylindrical holes (271) along its circumference, and the lower end of the vertical rod (344) can be inserted into the cylindrical hole (271) at the upper end of the limiting gear (27).

6. A high performance PCD close-tooth multi-edge forming milling cutter assembly according to claim 5, characterized in that: The upper end surface of the annular shoulder (33) is provided with a lower annular groove (331) that matches the upper annular groove (213), and balls (332) are evenly arranged in the lower annular groove (331) along its circumferential direction.

7. A high performance PCD close-tooth multi-edge forming milling cutter assembly according to claim 1, characterized in that: The first driving unit (35) comprises a first driving rod (351), the first driving rod (351) being slidably disposed in the No. 1 threaded hole, the end of the first driving rod (351) located inside the "convex" groove (32) being fixedly connected to a No. 1 cam (353), and a No. 1 threaded section (352) cooperating with the No. 1 threaded hole being provided at a position of the first driving rod (351) away from the No. 1 cam (353); The second driving unit (36) comprises a second driving rod (361) which is slidably arranged in the No. 2 threaded hole, the end of the second driving rod (361) located inside the "convex" groove (32) is fixedly connected to the No. 2 cam (363), and a No. 2 threaded section (362) which matches the No. 2 threaded hole is provided at a position of the second driving rod (361) away from the No. 2 cam (363).

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