Multi-directional adjustable outer needle machining structure for numerical control milling machine

Abstract

This utility model relates to the field of CNC milling machine machining technology, and discloses a multi-directional adjustable external needle machining structure for CNC milling machines. The structure includes a CNC milling machine with a three-jaw chuck inside for holding external needle parts. A multi-directional adjustable milling cutter base is provided on one side of the three-jaw chuck. The milling cutter base has a milling cutter assembly that allows for quick tool head replacement after angle adjustment. The milling cutter assembly has a fixing component that quickly secures the replaced tool head. A mounting hole for installing the milling cutter assembly is provided on one side of the milling cutter base. By setting up the milling cutter assembly and utilizing the cooperation between the cuboid connecting block and the replacement slot, quick tool head replacement after angle adjustment is achieved without disassembling the entire milling cutter assembly, reducing replacement time and improving machining efficiency. Simultaneously, the cuboid structure restricts the rotation of the tool head relative to the tool holder, ensuring machining accuracy.

Description

Technical Field

[0001] This utility model relates to the field of CNC milling machine technology, and in particular to a multi-directional adjustable external needle machining structure for CNC milling machines. Background Technology

[0002] Currently, when machining pin parts on CNC milling machines, it is often necessary to adjust the angle and type of the milling cutter according to the different machining parts and machining requirements of the pin.

[0003] The existing CNC milling machine cutter structure is mostly fixed connection. After the angle is adjusted, the process of changing the cutter head is cumbersome. It requires the use of additional tools to disassemble bolts and other connecting parts, which not only consumes a lot of time, but may also affect the machining accuracy due to errors in the disassembly and installation process, resulting in deviations in the machining of external pin parts, affecting product quality, and making it difficult to meet the needs of efficient and accurate external pin machining. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a multi-directional adjustable external needle machining structure for CNC milling machines.

[0005] This utility model is achieved using the following technical solution: a multi-directional adjustable external needle machining structure for a CNC milling machine, comprising a CNC milling machine, wherein the CNC milling machine is provided with a three-jaw chuck for clamping external needle parts, and a milling cutter base capable of multi-directional adjustment is provided on one side of the three-jaw chuck. The milling cutter base is provided with a milling cutter assembly capable of quickly changing the cutter head after angle adjustment, and the milling cutter assembly is provided with a fixing component capable of quickly fixing the changed cutter head. A mounting hole for mounting the milling cutter assembly is provided on one side of the milling cutter base, and the milling cutter assembly includes a cutter bar installed inside the mounting hole. One end of the cutter bar is provided with a cutter head, and a replacement groove is provided at the end of the cutter bar near the cutter head. A connecting block is fixedly installed at the end of the cutter head near the cutter bar, and one end of the connecting block extends into the interior of the replacement groove.

[0006] With the above technical solution, when it is necessary to replace the cutter head, the connecting block on the cutter head can be directly inserted into the replacement slot of the cutter bar, or pulled out from the replacement slot, without disassembling the entire milling cutter assembly. This enables quick replacement of the cutter head after angle adjustment, reduces replacement time, and improves processing efficiency.

[0007] As a further improvement to the above solution, both the connecting block and the replacement slot are arranged in a cuboid shape.

[0008] Through the above technical solution, the cuboid connecting block and replacement groove can restrict the rotation of the cutter head relative to the cutter shank, avoid machining errors caused by the rotational offset of the cutter head during the machining process, and ensure the coaxiality and stability of the cutter head and cutter shank after connection.

[0009] As a further improvement to the above solution, a limiting groove is formed on the cylindrical surface of the tool holder near the tool head. The fixing component includes a plurality of first ball holes arranged in a ring array on the cylindrical surface of the limiting groove. A fixing ball is slidably disposed inside each of the first ball holes. Second ball holes are formed on all four sides of the connecting block. Each second ball hole is connected to an adjacent first ball hole. Each fixing ball is located inside an adjacent first ball hole and second ball hole.

[0010] With the above technical solution, the fixing ball is embedded in both the first ball hole and the second ball hole, which can firmly restrict the connecting block in the replacement groove, realize the quick fixation of the cutter head and the cutter bar, and prevent the cutter head from loosening and falling off during processing; and the first ball hole and the fixing ball in the ring array can fix the connecting block from multiple directions, improving the fixation stability.

[0011] As a further improvement to the above solution, a limiting ring is installed on the tool holder and is slidably sleeved on the cylindrical surface of the limiting groove. One side of each fixed bead is in contact with the inner ring surface of the limiting ring, and a push spring sleeved on the cylindrical surface of the limiting groove is fixedly installed on one side of the limiting ring.

[0012] Through the above technical solution, the push spring always applies a thrust toward the fixed bead to the limiting ring, so that the inner ring surface of the limiting ring is tightly attached to the fixed bead, preventing the fixed bead from coming out of the first ball hole and the second ball hole, and ensuring the fixing effect of the fixing component; when it is necessary to disassemble the cutter head, simply pull the limiting ring away from the cutter head to compress the push spring, release the limitation of the limiting ring on the fixed bead, and then shake the fixed bead to achieve quick disassembly of the cutter head.

[0013] As a further improvement to the above solution, a retaining ring is fixedly installed on the cylindrical surface of the limiting ring, and the inner ring surface of the retaining ring is in contact with the cylindrical surface of the tool holder.

[0014] Through the above technical solution, the retaining ring can restrict the position of the fixed ball and prevent the fixed ball from falling out of the first ball hole.

[0015] As a further improvement to the above solution, the cylindrical surface of the limiting groove is provided with a plurality of sliding grooves arranged in a ring array, and a sliding block is slidably installed inside each sliding groove, and each sliding block is fixedly installed to the inner ring surface of the limiting ring.

[0016] Through the above technical solution, the sliding block slides in the sliding groove, which can guide the limiting ring to move stably along the axial direction of the tool bar, avoid the limiting ring from rotating and shifting during the sliding process, ensure that the limiting ring always keeps in contact with the fixed bead, and ensure the stable operation of the fixing component.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention, by setting up a milling cutter assembly, utilizes a cuboid connecting block and a replacement slot to achieve rapid replacement of the cutter head after angle adjustment, without disassembling the entire milling cutter assembly, reducing replacement time and improving processing efficiency; at the same time, the cuboid structure can limit the rotation of the cutter head relative to the cutter shank, ensuring processing accuracy. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention with a milling cutter base;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention with a milling cutter assembly;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention having a first ball bearing hole;

[0023] Figure 5 This is a schematic diagram of the structure of the present invention having a second ball bearing hole;

[0024] Figure 6 This is a cross-sectional structural diagram of the present invention, which includes a milling cutter assembly and a fixing assembly.

[0025] Explanation of key symbols:

[0026] 1. CNC milling machine; 2. Three-jaw chuck; 3. Milling cutter base; 401. Tool holder; 402. Tool head; 403. Replacement slot; 404. Connecting block; 501. First ball bearing hole; 502. Fixed ball; 503. Second ball bearing hole; 504. Limiting ring; 505. Push spring; 6. Limiting groove; 7. Retaining ring; 8. Sliding groove; 9. Sliding block. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Please combine Figures 1-6 This embodiment of a CNC milling machine provides a multi-directional adjustable external needle machining structure, including a CNC milling machine 1. The CNC milling machine 1 has a three-jaw chuck 2 for clamping external needle parts inside. A milling cutter base 3 capable of multi-directional adjustment is provided on one side of the three-jaw chuck 2. The milling cutter base 3 is provided with a milling cutter assembly that can quickly change the tool head after angle adjustment. The milling cutter assembly is provided with a fixing component that can quickly fix the changed tool head.

[0029] The milling cutter base 3 has a mounting hole on one side for mounting the milling cutter assembly. The milling cutter assembly includes a cutter shank 401 installed inside the mounting hole. One end of the cutter shank 401 is provided with a cutter head 402. A replacement groove 403 is provided at the end of the cutter shank 401 near the cutter head 402. A connecting block 404 is fixedly installed at the end of the cutter head 402 near the cutter shank 401. One end of the connecting block 404 extends into the interior of the replacement groove 403. Both the connecting block 404 and the replacement groove 403 are rectangular parallelepipeds.

[0030] When the cutter head 402 needs to be replaced, the connecting block 404 on the cutter head 402 can be directly inserted into the replacement slot 403 of the cutter bar 401, or pulled out from the replacement slot 403. There is no need to disassemble the entire milling cutter assembly, which enables quick replacement of the cutter head 402 after angle adjustment, reduces replacement time, and improves machining efficiency.

[0031] A limiting groove 6 is formed on the cylindrical surface of the tool holder 401 near the tool head 402. The fixing component includes a plurality of first ball holes 501 arranged in a ring array on the cylindrical surface of the limiting groove 6. A fixing ball 502 is slidably disposed inside each first ball hole 501. Second ball holes 503 are formed on all four sides of the connecting block 404. Each second ball hole 503 is connected to the adjacent first ball hole 501. Each fixing ball 502 is located inside the adjacent first ball hole 501 and second ball hole 503.

[0032] The fixing bead 502 is simultaneously embedded in the first ball hole 501 and the second ball hole 503, which can firmly restrict the connecting block 404 in the replacement groove 403, realize the quick fixation of the cutter head 402 and the cutter bar 401, and prevent the cutter head 402 from loosening and falling off during processing; and the annular array of the first ball hole 501 and the fixing bead 502 can fix the connecting block 404 from multiple directions, improving the fixation stability.

[0033] A limiting ring 504 is installed on the tool holder 401 and is slidably sleeved on the cylindrical surface of the limiting groove 6. One side of each fixing bead 502 is in contact with the inner ring surface of the limiting ring 504. A push spring 505 is fixedly installed on one side of the limiting ring 504 and is sleeved on the cylindrical surface of the limiting groove 6.

[0034] The push spring 505 always applies a pushing force to the limiting ring 504 toward the fixing bead 502, so that the inner ring surface of the limiting ring 504 is tightly attached to the fixing bead 502, preventing the fixing bead 502 from coming out of the first ball hole 501 and the second ball hole 503, thus ensuring the fixing effect of the fixing assembly. When it is necessary to disassemble the cutter head 402, simply pull the limiting ring 504 away from the cutter head 402 to compress the push spring 505, release the limitation of the limiting ring 504 on the fixing bead 502, and then shake the fixing bead 502 to achieve quick disassembly of the cutter head 402.

[0035] A retaining ring 7 is fixedly installed on the cylindrical surface of the limiting ring 504, and the inner ring surface of the retaining ring 7 is in contact with the cylindrical surface of the tool holder 401.

[0036] The retaining ring 7 can restrict the position of the retaining bead 502 and prevent the retaining bead 502 from coming out of the first ball hole 501.

[0037] Multiple sliding grooves 8 arranged in a ring array are provided on the cylindrical surface of the limiting groove 6. A sliding block 9 is slidably installed inside each sliding groove 8, and each sliding block 9 is fixedly installed on the inner ring surface of the limiting ring 504.

[0038] The sliding block 9 slides within the sliding groove 8, which guides the limiting ring 504 to move stably along the axial direction of the tool holder 401, preventing the limiting ring 504 from rotating and shifting during the sliding process, ensuring that the limiting ring 504 always remains in contact with the fixing bead 502, and guaranteeing the stable operation of the fixing assembly.

[0039] The implementation principle of a multi-directional adjustable external needle machining structure for a CNC milling machine in this application embodiment is as follows: First, the external needle part to be machined is placed on the three-jaw chuck 2 inside the CNC milling machine 1. The three-jaw chuck 2 is started, and the three jaws of the three-jaw chuck 2 move synchronously towards the center until the external needle part is tightly clamped, thus fixing the external needle part and preventing the part from shifting during the machining process.

[0040] According to the processing requirements of the outer needle part, adjust the angle of the milling cutter base 3. The milling cutter base 3 drives the milling cutter assembly installed in its mounting hole to rotate synchronously until the cutter head 402 is adjusted to the angle that meets the processing requirements. Stop the adjustment of the milling cutter base 3 to complete the setting of the milling cutter angle.

[0041] Next, pull the limiting ring 504 away from the cutter head 402. The limiting ring 504 drives the sliding block 9 fixed on its inner ring surface to slide along the axial direction of the cutter bar 401 in the sliding groove 8 of the limiting groove 6. At the same time, the limiting ring 504 compresses the push spring 505 on one side, so that the inner ring surface of the limiting ring 504 separates from the fixed bead 502, and releases the restriction on the fixed bead 502.

[0042] Align the connecting block 404 at one end of the cutter head 402 with the replacement groove 403 of the cutter bar 401, and insert the connecting block 404 into the replacement groove 403 until the second ball hole 503 on the connecting block 404 is aligned and connected with the first ball hole 501 on the limiting groove 6 of the cutter bar 401.

[0043] Slowly release the limiting ring 504, and the compressed push spring 505 restores its elastic deformation, applying a pushing force towards the cutter head 402 to the limiting ring 504, pushing the limiting ring 504 to slide along the sliding groove 8 towards the cutter head 402 until the inner ring surface of the limiting ring 504 re-attaches the fixing bead 502, and pushes the fixing bead 502 towards the connection between the first ball hole 501 and the second ball hole 503, so that the fixing bead 502 is simultaneously embedded in the first ball hole 501 and the second ball hole 503, thus completing the fixation of the cutter head 402 and the cutter bar 401.

[0044] Start the CNC milling machine 1. The CNC milling machine 1 drives the cutter shank 401 of the milling cutter assembly to rotate the cutter head 402 at high speed. At the same time, it controls the milling cutter base 3 to move the milling cutter assembly towards the external needle part on the three-jaw chuck 2. The cutter head 402 contacts the external needle part and performs machining. During the machining process, the cuboid connecting block 404 and the replacement groove 403 restrict the rotation of the cutter head 402 relative to the cutter shank 401. The fixing bead 502 prevents the cutter head 402 from loosening and ensures machining accuracy.

[0045] When the cutter head 402 needs to be replaced, repeat the above steps, pull the limiting ring 504 and compress the push spring 505 to release the restriction on the fixing bead 502; then pull the connecting block 404 of the cutter head 402 out of the replacement groove 403 of the cutter bar 401, replace the new cutter head 402, loosen the limiting ring 504 to complete the installation and fixation of the new cutter head 402, and you can continue to process the outer needle parts.

[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A multi-directional adjustable external pin machining structure for a CNC milling machine, comprising a CNC milling machine (1), wherein the CNC milling machine (1) is provided with a three-jaw chuck (2) for clamping external pin parts, and a milling cutter base (3) capable of multi-directional adjustment is provided on one side of the three-jaw chuck (2), characterized in that, The milling cutter base (3) is provided with a milling cutter assembly that can quickly replace the cutter head after angle adjustment. The milling cutter assembly is provided with a fixing component that can quickly fix the replaced cutter head. The milling cutter base (3) has a mounting hole for mounting the milling cutter assembly on one side. The milling cutter assembly includes a cutter bar (401) installed inside the mounting hole. One end of the cutter bar (401) is provided with a cutter head (402). A replacement groove (403) is provided at the end of the cutter bar (401) near the cutter head (402). A connecting block (404) is fixedly installed at the end of the cutter head (402) near the cutter bar (401). One end of the connecting block (404) extends into the interior of the replacement groove (403).

2. The multi-directional adjustable external needle machining structure for a CNC milling machine as described in claim 1, characterized in that, Both the connecting block (404) and the replacement slot (403) are rectangular parallelepipeds.

3. The multi-directional adjustable external needle machining structure for a CNC milling machine as described in claim 1, characterized in that, The cutter bar (401) has a limiting groove (6) on its cylindrical surface near the cutter head (402). The fixing component includes a plurality of first ball holes (501) arranged in a ring array on the cylindrical surface of the limiting groove (6). A fixing ball (502) is slidably disposed inside each of the first ball holes (501). The connecting block (404) has second ball holes (503) on all four sides. Each second ball hole (503) is connected to the adjacent first ball hole (501). Each fixing ball (502) is located inside the adjacent first ball hole (501) and second ball hole (503).

4. The multi-directional adjustable external needle machining structure for a CNC milling machine as described in claim 3, characterized in that, A limiting ring (504) is installed on the cutter bar (401) and is slidably sleeved on the cylindrical surface of the limiting groove (6). One side of each fixing bead (502) is in contact with the inner ring surface of the limiting ring (504). A push spring (505) is fixedly installed on one side of the limiting ring (504) and is sleeved on the cylindrical surface of the limiting groove (6).

5. The multi-directional adjustable external needle machining structure for a CNC milling machine as described in claim 4, characterized in that, A retaining ring (7) is fixedly installed on the cylindrical surface of the limiting ring (504), and the inner ring surface of the retaining ring (7) is in contact with the cylindrical surface of the tool holder (401).

6. The multi-directional adjustable external needle machining structure for a CNC milling machine as described in claim 4, characterized in that, The cylindrical surface of the limiting groove (6) is provided with a plurality of sliding grooves (8) arranged in a ring array. Each sliding groove (8) is slidably installed with a sliding block (9), and each sliding block (9) is fixedly installed with the inner ring surface of the limiting ring (504).

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