Positioning type tungsten steel facing cutter assembly

Abstract

The invention discloses a positioning type tungsten steel milling cutter assembly, and relates to the field of tungsten steel milling cutters. The cutter handle comprises a cutter handle main body, a cutter head is mounted on the outer side of the cutter handle main body in a clamping manner, a plurality of chip removal grooves are formed in the outer surface of the cutter head, and a mounting surface for mounting a cutter is formed on one side of each chip removal groove; a positioning block is fixedly arranged on the mounting surface; the cutter comprises a cutting block, and positioning grooves are formed in the surfaces of the two sides of the cutting block. A positioning groove is formed in one side of the mounting surface, the positioning groove is opposite to the positioning block in position and is used for limiting the position of the cutting tool, two groups of abutting grooves are formed in one side of the mounting surface, and the abutting grooves abut against the outer side of the cutting tool, so that automatic guiding and positioning of the cutting block are achieved by arranging the inclined surface positioning block on the mounting surface to be engaged with the inclined surface positioning groove of the cutting tool; meanwhile, the abutting grooves in the two sides limit the radial displacement of the cutter, the lateral cutting force in the machining process is resisted, and the cutting stability is improved.

Description

Technical Field

[0001] The invention relates to the field of tungsten steel milling cutter discs, in particular to a positioning type tungsten steel milling cutter disc assembly. Background Art

[0002] Tungsten carbide milling cutters are high-performance cutting tools made from tungsten carbide (hard alloy). They possess exceptional hardness and wear resistance, second only to diamond, making them suitable for high-speed machining of high-hardness materials such as stainless steel, alloy steel, and hardened steel. They are available in a variety of configurations, including standard cutters (1-20mm in diameter) and custom cutters. These cutters are categorized by their main deflection angles, such as 45° and 90°, to meet varying cutting force requirements.

[0003] The inspection institute, with announcement number CN117086376A, announced a "positioning type tungsten steel milling cutter disc assembly". A blade mounting groove is provided on one of the two ends of the chip groove. A cutting blade is provided in the blade mounting groove, and the cutting blade is fixedly mounted on the milling cutter disc by a fastening device. A clamping block is fixedly mounted on the back of the cutting blade. An inclined clamping groove is provided on both sides of the clamping block. The fastening device includes a clamping plate and a locking bolt. An insert plate that matches the clamping groove and is slidably connected to the clamping groove is fixedly connected to the clamping plate. A locking bolt is rotatably connected to the clamping plate, and the locking bolt is threadedly connected to the milling cutter disc, avoiding direct grooving on the blade while ensuring that the chip groove is not too small. This allows the present invention to not damage the rigidity of the blade during the installation process and not cause poor chip removal.

[0004] There is a problem in the above-mentioned comparative document. Specifically, the fastening device relies on manual assembly of the clamping plate, the insert plate and the locking bolt. The directional rod needs to be precisely aligned with the directional slot. In a high-speed rotation environment, it is easy to loosen due to slight misalignment, which increases the installation time and error rate. The clamping block is fixed on the blade. If it is damaged, it needs to be replaced as a whole, and the maintenance cost is high. In view of this, the inventor urgently needs to design an installation mechanism that can quickly install the blade, so as to further improve the installation firmness and convenience of the blade. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a positioning tungsten steel milling cutter disc assembly to solve the technical problem that the current fastening device requires manual alignment of the clamping groove and the insertion plate, relies on operating accuracy, and a slight misalignment between the directional rod and the directional groove may cause loosening during high-speed rotation.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a positioning type tungsten steel milling cutter assembly, comprising a tool handle body, a tool handle body having a tool disc mounted on its outer side, a plurality of chip removal grooves formed on the outer surface of the tool disc, and a mounting surface for mounting a cutting tool formed on one side of the chip removal groove;

[0007] A positioning block is fixedly provided on the mounting surface;

[0008] The cutting tool comprises a cutting block, and positioning grooves are provided on both side surfaces of the cutting block;

[0009] The positioning groove is opposite to the positioning block and is used to limit the position of the cutting blade. Two sets of abutment grooves are formed on one side of the mounting surface, and the abutment grooves abut against the outer side of the cutting blade.

[0010] The two sides of the positioning block away from the abutting groove are formed with inclined surfaces, and the four sides of the inner wall of the positioning groove are all formed with inclined surfaces for guiding the installation of the positioning block.

[0011] By adopting the above technical solution, by setting a positioning block on the mounting surface of the cutter disc, cooperating with the bevel positioning grooves on both sides of the cutting block, the bevel guiding principle is used to realize fast and accurate positioning of the cutting tool, which significantly simplifies the installation process and avoids manual alignment errors.

[0012] Furthermore, a mounting hole is provided on the positioning block, and the positioning block is detachably mounted on the cutter disc via bolts and the mounting hole.

[0013] By adopting the above technical solution, the positioning block is detachably connected through the mounting holes and bolts, making the positioning module independent of the cutter head body, facilitating the separate replacement or repair of worn parts, and significantly reducing maintenance costs and downtime. At the same time, the split design allows flexible adaptation to cutting tools of different specifications. The clamping solution can be adjusted by simply replacing the positioning block, thus expanding the versatility of the cutter head.

[0014] Furthermore, a cooling mechanism is provided on the mounting surface, and the cooling mechanism includes a liquid outlet, and one side of the liquid outlet is connected to a first cooling channel and a second cooling channel.

[0015] Furthermore, the other ends of the first cooling channel and the second cooling channel are open structures, and a third cooling channel is opened on the surface of the positioning block, and the third cooling channel is connected to the second cooling channel.

[0016] Furthermore, a ring groove is provided on the surface of the positioning block, the ring groove is connected to the third cooling channel, and the ring groove is coaxially arranged with the mounting hole.

[0017] Furthermore, the third cooling channel and the annular groove are located between the positioning block and the cutting block.

[0018] Furthermore, a sealing ring is provided in the middle of the annular groove for isolating the bolts from the coolant, and the sealing ring abuts against the surface of the cutting block.

[0019] By adopting the above technical solution, the cooling mechanism transports the coolant to the third cooling channel in the positioning block through the first cooling channel and the second cooling channel, and then the annular groove evenly covers the contact surface of the cutting block to achieve precise jet cooling, effectively suppressing the thermal deformation of the tool and oxidation of the workpiece surface caused by high cutting temperature.

[0020] Furthermore, the plurality of chip removal grooves are arranged in an equidistant annular pattern.

[0021] By adopting the above technical solution, the equidistant annularly arranged chip grooves form a balanced centrifugal force field under high-speed rotation, prompting the chips to be evenly thrown away from the processing area along the groove body, avoiding secondary scratches or abnormal tool wear caused by local accumulation. At the same time, the symmetrically distributed groove structure enhances the dynamic balance performance of the cutter head, reduces the vibration amplitude during high-speed operation, and improves the surface finish and dimensional accuracy of the processed surface.

[0022] Furthermore, a clamping step is provided on the outer surface of the handle body, and the cutter disc is clamped on the clamping step, and the cutter disc is fastened and installed by bolts and threaded holes.

[0023] Furthermore, the outer surfaces of the tool handle body and the cutter disc are both provided with a clamping groove, and the internal bolts of the clamping groove are installed with a clamping block for fixing the axial angle of the tool handle body and the cutter disc.

[0024] By adopting the above technical solution, the clamping step of the handle body forms a quick positioning interface with the cutter disc, which is fastened by bolts passing through the threaded holes, so that the cutter disc can be disassembled and assembled in seconds, meeting the needs of rapid changeover of the production line.

[0025] In summary, the present invention mainly has the following beneficial effects:

[0026] 1. The present invention provides an inclined surface positioning block on the mounting surface to engage with the inclined surface positioning groove of the cutting tool, thereby realizing automatic guiding and positioning of the cutting block and reducing the number of manual adjustment steps. At the same time, the abutment grooves on both sides limit the radial displacement of the cutting tool, resisting the lateral cutting force during processing and improving cutting stability.

[0027] 2. The present invention connects the third cooling channel of the positioning block through the first and second cooling channels through the cooling mechanism, so that the coolant reaches the cutting area directly, and the sealing ring blocks the coolant in the ring groove from seeping into the bolt hole, thereby ensuring cooling efficiency and connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the exploded three-dimensional structure of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the cutting blade of the present invention;

[0031] Figure 4 This is a schematic diagram of the main structure of the cutting tool of the present invention;

[0032] Figure 5 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0034] In the figure: 1. Tool holder body; 2. Tool disc; 3. Chip groove; 4. Mounting surface; 5. Cutting tool; 501. Cutting block; 502. Positioning groove; 503. Mounting hole; 6. Positioning block; 7. Cooling mechanism; 701. First cooling channel; 702. Second cooling channel; 703. Liquid outlet; 704. Third cooling channel; 705. Ring groove; 706. Sealing ring; 8. Abutment groove; 9. Clamping step; 10. Clamping groove; 11. Threaded hole; 12. Clamping block. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0036] In this embodiment:

[0037] A positioning type tungsten steel milling cutter assembly, such as Figure 1-6 As shown, it comprises a handle body 1, a cutter disc 2 is mounted on the outer side of the handle body 1, a plurality of chip removal grooves 3 are formed on the outer surface of the cutter disc 2, and a mounting surface 4 for mounting a cutting blade 5 is formed on one side of the chip removal groove 3;

[0038] A positioning block 6 is fixedly provided on the mounting surface 4;

[0039] The cutting tool 5 includes a cutting block 501, and positioning grooves 502 are formed on both sides of the cutting block 501;

[0040] The positioning groove 502 is opposite to the positioning block 6 and is used to limit the position of the cutting blade 5. Two sets of abutment grooves 8 are formed on one side of the mounting surface 4, and the abutment grooves 8 abut against the outer side of the cutting blade 5.

[0041] The two sides of the positioning block 6 away from the abutment groove 8 are formed with inclined surfaces, and the four sides of the inner wall of the positioning groove 502 are formed with inclined surfaces for guiding the installation of the positioning block 6. By arranging the positioning block 6 on the mounting surface 4 of the cutter disc 2, and cooperating with the inclined positioning grooves 502 on both sides of the cutting block 501, the inclined surface guiding principle is used to realize fast and accurate positioning of the cutting tool 5, which significantly simplifies the installation process and avoids manual alignment errors. At the same time, the two groups of abutment grooves 8 on the side of the mounting surface 4 are tightly abutted against the side of the cutting tool 5 to form a radial limit support, which effectively resists the lateral cutting force in high-speed cutting, prevents the blade from shifting due to vibration, and improves processing stability. In addition, the opening of the chip withdrawal groove 3 ensures that the chips are discharged in time to avoid chip accumulation and damage to the workpiece surface. The overall structure takes into account both installation efficiency and dynamic reliability.

[0042] See Figure 3 、 Figure 4 , a mounting hole 503 is provided on the positioning block 6, and the positioning block 6 is detachably mounted with the cutter disc 2 through bolts and the mounting hole 503. The positioning block 6 is detachably connected to the bolt through the mounting hole 503, so that the positioning module is independent of the cutter disc 2 body, which is convenient for replacing or repairing worn parts separately, greatly reducing maintenance costs and downtime. At the same time, the split design allows flexible adaptation to cutting knives 5 of different specifications. The clamping scheme can be adjusted by replacing the positioning block 6, which expands the versatility of the cutter disc 2. In addition, the bolt fixing method does not destroy the structural integrity of the cutter disc 2 body, avoids overall scrapping, and is particularly suitable for long-term use of high-value carbide tools.

[0043] See Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 A cooling mechanism 7 is provided on the mounting surface 4 , and the cooling mechanism 7 includes a liquid outlet 703 , and one side of the liquid outlet 703 is connected to a first cooling channel 701 and a second cooling channel 702 .

[0044] Furthermore, the other ends of the first cooling channel 701 and the second cooling channel 702 are open structures, and a third cooling channel 704 is opened on the surface of the positioning block 6 , and the third cooling channel 704 is connected to the second cooling channel 702 .

[0045] Furthermore, an annular groove 705 is formed on the surface of the positioning block 6 . The annular groove 705 is connected to the third cooling channel 704 . The annular groove 705 is coaxial with the mounting hole 503 .

[0046] Furthermore, the third cooling channel 704 and the annular groove 705 are located between the positioning block 6 and the cutting block 501 .

[0047] Furthermore, a sealing ring 706 is provided in the middle of the annular groove 705 to block the bolts and the coolant. The sealing ring 706 abuts against the surface of the cutting block 501. The cooling mechanism 7 transports the coolant to the third cooling channel 704 in the positioning block 6 through the first cooling channel 701 and the second cooling channel 702. The annular groove 705 then evenly covers the contact surface of the cutting block 501 to achieve precise jet cooling, effectively suppressing the thermal deformation of the tool and oxidation of the workpiece surface caused by the high cutting temperature. At the same time, the coaxial setting of the annular groove 705 and the mounting hole 503 combined with the blocking effect of the sealing ring 706 completely isolates the coolant from penetrating the bolt connection, thereby ensuring cooling efficiency and avoiding rust or loosening of the bolts. In addition, the open cooling channel outlet design prevents impurity deposition and blockage, ensuring smooth supply of coolant during continuous processing.

[0048] See Figure 1 、 Figure 2 , several chip grooves 3 are arranged in an equidistant ring shape. The equidistant ring-shaped chip grooves 3 form a balanced centrifugal force field under high-speed rotation, which prompts the chips to be evenly thrown away from the processing area along the groove body, avoiding secondary scratches or abnormal wear of the tool caused by local accumulation. At the same time, the symmetrically distributed groove structure enhances the dynamic balance performance of the cutter head 2, reduces the vibration amplitude during high-speed operation, and improves the surface finish and dimensional accuracy of the processed surface. In addition, the optimized chip removal path can adapt to the processing requirements of sticky materials, significantly improving the chip removal efficiency and continuous processing time.

[0049] See Figure 1 、 Figure 2 The outer surface of the handle body 1 is provided with a clamping step 9, the cutter disc 2 is clamped on the clamping step 9, and the cutter disc 2 is fastened and installed by bolts and threaded holes 11.

[0050] Furthermore, a slot 10 is provided on the outer surface of the tool handle body 1 and the cutter disc 2, and a clamping block 12 is installed on the internal bolt of the slot 10 for fixing the axial angle of the tool handle body 1 and the cutter disc 2. The clamping step 9 of the tool handle body 1 forms a quick positioning interface with the cutter disc 2, which is fastened with the bolts passing through the threaded hole 11, so that the cutter disc 2 can be disassembled and assembled in seconds, meeting the rapid changeover requirements of the production line. At the same time, the circumferential locking structure of the slot 10 and the clamping block 12 ensures that the axial angle of the cutter disc 2 relative to the tool handle body 1 is fixed, eliminating the angle deviation during repeated clamping and ensuring the benchmark uniformity of multi-process processing. In addition, the modular cutter disc 2 setting can replace components with different numbers of teeth or groove types according to the characteristics of the processing material, so as to achieve a single tool handle matching the processing requirements of multiple scenarios.

[0051] The implementation principle of this embodiment is as follows: first, the tool holder body 1 is connected to the machine tool spindle through the mounting surface 4 at the bottom to ensure axial positioning, then the cutter head 2 with the chip groove 3 is clamped on the clamping step 9 of the tool holder body 1 and fixed by bolts passing through the threaded holes 11, and then the clamping block 12 is embedded in the clamping groove 10 of the tool holder body 1 and the cutter head 2 to lock the circumferential angle. When installing the cutting blade, the inclined surface positioning groove 502 of the cutting block 501 is aligned with the guide inclined surface of the positioning block 6 on the cutter head 2 and pushed in, so that the two sides of the cutting block 501 are automatically The radial limit is completed by dynamically aligning the abutment groove 8, and then the mounting hole 503 of the positioning block 6 is locked by bolts. During the processing, the coolant flows through the first cooling channel 701, the second cooling channel 702 to the third cooling channel 704 in the positioning block 6, and is injected into the annular groove 705 to cover the cutting area, wherein the sealing ring 706 blocks the coolant from penetrating into the bolt hole, and the chips are efficiently discharged through the chip withdrawal grooves 3 distributed equidistantly in an annular manner, realizing continuous and stable cutting. If maintenance is required, the positioning block 6 can be disassembled independently or the cutting blade can be replaced without scrapping the entire unit.

[0052] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A positioning type tungsten steel milling cutter assembly, characterized by: The present invention comprises a handle body (1), a cutter disc (2) is mounted on the outer side of the handle body (1), a plurality of chip removal grooves (3) are formed on the outer surface of the cutter disc (2), and a mounting surface (4) for mounting a cutting blade (5) is formed on one side of the chip removal groove (3); A positioning block (6) is fixedly provided on the mounting surface (4); The cutting blade (5) comprises a cutting block (501), and positioning grooves (502) are provided on both side surfaces of the cutting block (501); The positioning groove (502) is opposite to the positioning block (6) and is used to limit the position of the cutting blade (5); two groups of abutment grooves (8) are formed on one side of the mounting surface (4), and the abutment grooves (8) abut against the outer side of the cutting blade (5); The two sides of the positioning block (6) away from the abutment groove (8) are formed with inclined surfaces, and the four sides of the inner wall of the positioning groove (502) are all formed with inclined surfaces for guiding the installation of the positioning block (6).

2. The positioning type tungsten steel milling cutter assembly according to claim 1, characterized in that: The positioning block (6) is provided with a mounting hole (503), and the positioning block (6) is in a detachable mounting structure with the cutter head (2) via bolts and the mounting hole (503).

3. The positioning type tungsten steel milling cutter assembly according to claim 1, characterized in that: A cooling mechanism (7) is provided on the mounting surface (4), and the cooling mechanism (7) comprises a liquid outlet (703), and one side of the liquid outlet (703) is connected to a first cooling channel (701) and a second cooling channel (702).

4. The positioning type tungsten steel milling cutter assembly according to claim 3, characterized in that: The other ends of the first cooling channel (701) and the second cooling channel (702) are open structures, and a third cooling channel (704) is provided on the surface of the positioning block (6), and the third cooling channel (704) is connected to the second cooling channel (702).

5. The positioning type tungsten steel milling cutter assembly according to claim 1, characterized in that: The surface of the positioning block (6) is further provided with an annular groove (705), the annular groove (705) is connected to the third cooling channel (704), and the annular groove (705) is coaxially arranged with the mounting hole (503).

6. The positioning type tungsten steel milling cutter assembly according to claim 5, characterized in that: The third cooling channel (704) and the annular groove (705) are located between the positioning block (6) and the cutting block (501).

7. The positioning type tungsten steel milling cutter assembly according to claim 5, characterized in that: A sealing ring (706) is provided in the middle of the annular groove (705) for isolating the bolts from the coolant, and the sealing ring (706) is in contact with the surface of the cutting block (501).

8. The positioning type tungsten steel milling cutter assembly according to claim 1, characterized in that: The plurality of chip removal grooves (3) are arranged in an equidistant annular pattern.

9. The positioning type tungsten steel milling cutter assembly according to claim 1, characterized in that: The outer surface of the handle body (1) is provided with a clamping step (9), the cutter disc (2) is clamped on the clamping step (9), and the cutter disc (2) is fastened and installed via bolts and threaded holes (11).

10. The positioning type tungsten steel milling cutter assembly according to claim 1, characterized in that: The outer surfaces of the handle body (1) and the cutter disc (2) are both provided with a clamping groove (10), and the internal bolts of the clamping groove (10) are installed with a clamping block (12) for fixing the axial angle of the handle body (1) and the cutter disc (2).

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