Milling cutter for thread groove machining

Abstract

The milling cutter comprises a cutter handle and a plurality of cutter bits arranged at the end of the cutter handle, chip grooves are formed between the adjacent cutter bits, a first liquid through hole is formed in the axis position in the cutter handle, and a cooling mechanism used for cooling the cutter bits is connected into the first liquid through hole in a sliding mode. And the fixing seat is clamped with the cutter handle through a fixing mechanism. The position of the connecting rod connected with the fixing rod is adjusted by clamping the fixing rod through the adjusting bolt at different positions, and then the position of the bearing disc connected with the connecting rod through the limiting rod is adjusted, so that the spraying angle of cooling liquid is conveniently adjusted, and the effect of effectively cooling the tool bit is achieved; the screw rod is driven to rotate by rotating the hand screwing piece, so that the sliding block in threaded connection with the screw rod is driven to move, the plug pin connected with the sliding block is driven to move into the inserting groove, the cutter handle is conveniently fixed to the fixing base, and the milling cutter is conveniently mounted and dismounted.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically a milling cutter used for machining thread grooves. Background Technology

[0002] Thread machining is a process that uses tools for making threads to process workpieces using cutting, turning, milling, grinding, and other techniques. It generally refers to the methods of machining threads on workpieces using forming tools or abrasives, and mainly includes turning, milling, tapping, threading, grinding, lapping, and whirl cutting.

[0003] In existing technologies, such as the thread milling cutter disclosed in CN220445265U, the device uses a threaded hole on the periphery of the bearing housing to position the milling cutter head within the inner diameter of the balls inside the bearing housing via a positioning bolt. This allows the milling cutter head to be detached from the bearing housing, facilitating later replacement and maintenance. Compared to existing methods where the bearing housing is connected to the milling cutter head, this device allows for separate detachment and easier replacement and maintenance. Furthermore, the milling cutter head has positioning grooves on its outer circumference that correspond one-to-one with the outer diameter of the balls inside the bearing housing. Multiple sets of balls engage with the positioning grooves on the outer circumference of the milling cutter head, and the positioning block at the top of the milling cutter head fits tightly against the inner wall of the bearing housing. This makes the connection between the milling cutter head and the bearing housing more stable, compared to existing methods where the milling cutter head contacts the balls inside the bearing housing.

[0004] However, in implementing the relevant technology, the above design has the following problems: the cutting head overheats during the milling process and requires a separate cooling nozzle for cooling, which is very inconvenient. Therefore, a milling cutter for thread groove machining is provided to overcome the above defects. Utility Model Content

[0005] This utility model provides a milling cutter for machining thread grooves to solve the above-mentioned technical problems.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a milling cutter for machining thread grooves, including a shank and a plurality of cutter heads disposed at the end of the shank, a chip removal groove is provided between adjacent cutter heads, a first liquid passage hole is provided at the inner axis of the shank, a cooling mechanism for cooling the cutter heads is slidably connected in the first liquid passage hole, a fixing groove is provided at the side end of the shank, a fixing seat is inserted into the fixing groove, a slot is provided in the fixing groove, and the fixing seat is engaged with the slot through a fixing mechanism.

[0007] Preferably, the tooth angle formed between adjacent cutter heads is 60°.

[0008] Preferably, the cutter head and the chip removal groove are coated with an AB coating.

[0009] Preferably, the cooling mechanism includes a limiting member, a fixing rod is fixedly connected to the end of the limiting member, a connecting rod is fixedly connected to the end of the fixing rod, a limiting rod is fixedly connected to the end of the connecting rod, a receiving plate is fixedly connected to the end of the limiting rod via a positioning rod, a first liquid passage hole is provided at the center of the handle, the limiting member, the fixing rod and the limiting rod are all disposed in the first liquid passage hole, a bolt is threadedly connected to the side of the handle, and the end of the bolt contacts the fixing rod.

[0010] Preferably, the diameter of the limiting rod is the same as the inner diameter of the first liquid passage hole, and the surface of the limiting rod is provided with a plurality of second liquid passage holes.

[0011] Preferably, the receiving plate has an inner arc-shaped structure.

[0012] Preferably, the fixing mechanism includes a lead screw, which is rotatably connected to a fixing seat and threadedly connected to a slider. A pin is fixedly connected to the side of the slider and engages with a slot. A snap-fit ​​block that engages with a fixing slot is fixedly connected to the inner wall of the fixing seat. A guide plate is fixedly connected to the inner side of the fixing seat and is positioned above the slider.

[0013] Preferably, the lead screw passes through the end of the fixed seat and is fixedly connected to the hand-tightening component.

[0014] The beneficial effects of this utility model are:

[0015] 1) By adjusting the different positions of the bolt clamping and fixing rod, the position of the connecting rod connected to the fixing rod can be adjusted, and then the position of the receiving plate connected to the connecting rod through the limiting rod can be adjusted, so as to facilitate the adjustment of the spray angle of the coolant and achieve the effect of effectively cooling the cutter head;

[0016] 2) By rotating the hand-tightening component, the lead screw is rotated, which in turn moves the slider connected to the lead screw, thereby moving the pin connected to the slider into the slot, thus facilitating the fixing of the tool holder on the fixed seat and making it convenient to install and remove the milling cutter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cooling mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled cooling mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the fixed base structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the fixing mechanism of this utility model.

[0023] In the picture:

[0024] 1. Tool holder; 2. Chip removal groove; 3. Tool tip; 4. Mounting base;

[0025] 5. Cooling mechanism; 501. Bolt; 502. First liquid passage hole; 503. Limiting component; 504. Fixing rod; 505. Connecting rod; 506. Second liquid passage hole; 507. Limiting rod; 508. Receiving plate;

[0026] 6. Fixing mechanism; 601. Fixing groove; 602. Slot; 603. Pin; 604. Slider; 605. Lead screw; 606. Hand-tightening component; 607. Guide plate; 608. Snap-fit ​​block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1, as Figures 1 to 6 As shown, a milling cutter for thread groove machining includes a shank 1 and multiple cutter heads 3 disposed at the end of the shank 1. Chip removal grooves 2 are provided between adjacent cutter heads 3. A first fluid passage hole 502 is provided at the axial center of the shank 1. A cooling mechanism 5 for cooling the cutter heads 3 is slidably connected in the first fluid passage hole 502. A fixing groove 601 is provided on the side end of the shank 1. A fixing seat 4 is inserted into the fixing groove 601. A slot 602 is provided in the fixing groove 601. The fixing seat 4 is engaged with the slot 602 by a fixing mechanism 6. The tooth angle formed between adjacent cutter heads 3 is 60°. The surfaces of the cutter heads 3 and the chip removal grooves 2 are coated with an AB coating. The connection area of ​​the 60° tooth angle between the cutter heads 3 is relatively large, and the friction is large, making the connection tight and reliable. The AB coating can improve the strength of the cutter heads 3 and increase their service life.

[0029] Example 2: In addition to all the technical features in Example 1, this example also includes: a cooling mechanism 5 comprising a limiting member 503, a fixing rod 504 fixedly connected to the end of the limiting member 503, a connecting rod 505 fixedly connected to the end of the fixing rod 504, a limiting rod 507 fixedly connected to the end of the connecting rod 505, and a receiving plate 508 fixedly connected to the end of the limiting rod 507 via a positioning rod. A first liquid passage hole 502 is provided at the center of the handle 1. The limiting member 503, the fixing rod 504, and the limiting rod 507 are all disposed within the first liquid passage hole 502. A bolt 501 is threadedly connected to the side of the handle 1. The end of the bolt 501 contacts the fixing rod 504. The diameter of the limiting rod 507 is the same as the inner diameter of the first liquid passage hole 502. Multiple second liquid passage holes 506 are provided on the surface of the limiting rod 507. The receiving plate 508 has an inner arc-shaped structure.

[0030] In this embodiment, the inner arc-shaped structure of the receiving plate 508 allows the coolant sprayed on its surface to fly out along the angle of the edge of the receiving plate 508, thereby splashing onto the inner wall of the processing tank and the cutting head 3, achieving an effective cooling effect.

[0031] Example 3: In addition to all the technical features in Example 1, this example also includes: a fixing mechanism 6 comprising a lead screw 605, which is rotatably connected to a fixing base 4 and threadedly connected to a slider 604; a pin 603 fixedly connected to the side of the slider 604, which engages with a slot 602; a snap-fit ​​block 608 that engages with a fixing groove 601 is fixedly connected to the inner wall of the fixing base 4; a guide plate 607 is fixedly connected to the inner side of the fixing base 4 and is positioned above the slider 604; a hand-tightening component 606 is fixedly connected to the end of the lead screw 605 passing through the fixing base 4, and the surface of the hand-tightening component 606 has an anti-slip ring for easy adjustment.

[0032] During use, adjust bolt 501 to remove its restriction on fixing rod 504. Then, adjust receiving plate 508 to a suitable machining position, allowing the sprayed coolant to flow from the bottom to the sidewall of the machined threaded hole. Tighten bolt 501, bringing it into contact with fixing rod 504 and limiting its position. Coolant will then flow from the first through-hole 502 at the center of fixing seat 4 to the second through-hole 506 within limiting rod 507, and finally spray into receiving plate 508. Receiving plate 508 guides the coolant towards the machined threaded hole and the surface of cutting head 3, achieving effective cooling. The cooling mechanism 5 can be removed from the first liquid passage hole 502 simply by removing the bolt 501. When it is necessary to clamp the tool handle 1, the snap-fit ​​block 608 on the inner wall of the fixing base 4 is aligned with the fixing groove 601 on the surface of the tool handle 1 and inserted. At this time, the hand-tightening component 606 is rotated, which drives the lead screw 605 to rotate. The lead screw 605 is threadedly connected to the slider 604, and the slider 604 is moved laterally by the guide plate 607. The pin 603 fixedly connected to the side of the slider 604 is moved and then inserted into the slot 602, thereby clamping the tool handle 1 to the fixing base 4.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A milling cutter used for thread groove machining, comprising a cutter shank (1) and a plurality of cutter heads (3) arranged at the end of the cutter shank (1), and a chip flute (2) arranged between adjacent cutter heads (3), characterized in that: The first liquid passage (502) is arranged at the inner shaft of the tool handle (1), and a cooling mechanism (5) for cooling the tool head (3) is slidably connected in the first liquid passage (502). The fixed groove (601) is arranged at the side end of the tool handle (1), the fixed seat (4) is inserted in the fixed groove (601), the insertion groove (602) is arranged in the fixed groove (601), and the fixed seat (4) is clamped with the insertion groove (602) through the fixing mechanism (6).

2. The milling cutter according to claim 1, characterized in that: The tooth angle formed between the adjacent tool heads (3) is 60°.

3. The milling cutter according to claim 1, characterized in that: The tool head (3) and the chip removal groove (2) are coated with an AB coating.

4. The milling cutter according to claim 1, characterized in that: The cooling mechanism (5) comprises a limiting piece (503), the end of the limiting piece (503) is fixedly connected with a fixed rod (504), the end of the fixed rod (504) is fixedly connected with a connecting rod (505), the end of the connecting rod (505) is fixedly connected with a limiting rod (507), the end of the limiting rod (507) is fixedly connected with a bearing disc (508) through a positioning rod, the first liquid passage (502) is arranged at the center of the tool handle (1), the limiting piece (503), the fixed rod (504) and the limiting rod (507) are arranged in the first liquid passage (502), and the tool handle (1) is screw-connected with a bolt (501) on the side surface, and the end of the bolt (501) is in contact with the fixed rod (504).

5. The milling cutter according to claim 4, characterized in that: The diameter of the limiting rod (507) is the same as the inner diameter of the first liquid passage (502), and a plurality of second liquid passages (506) are arranged on the surface of the limiting rod (507).

6. The milling cutter according to claim 5, characterized in that: The bearing disc (508) is an inner arc structure.

7. The milling cutter according to claim 1, characterized in that: The fixing mechanism (6) comprises a screw rod (605), the screw rod (605) is rotatably connected with the fixed seat (4), the screw rod (605) is screw-connected with a sliding block (604), the sliding block (604) is fixedly connected with a bolt (603) on the side surface, the bolt (603) is matched with the insertion groove (602), the fixed seat (4) is fixedly connected with a clamping block (608) matched with the fixed groove (601) on the inner wall, the fixed seat (4) is fixedly connected with a guide plate (607) on the inner side, and the guide plate (607) is arranged above the sliding block (604).

8. The milling cutter according to claim 7, characterized in that: The screw rod (605) is fixedly connected with a hand screwing piece (606) through the end of the fixed seat (4).

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