Milling cutter with spiral structure

Abstract

The utility model discloses a milling cutter with a spiral structure, which comprises a base, a support frame, a sliding seat, a thread milling cutter and a transmission mechanism, the support frame is fixed on one side of the base, the sliding seat is slidably connected to the top of the base, one end of the thread milling cutter is connected to the sliding seat, and the transmission mechanism is arranged on the support frame. The thread milling cutter has the advantages that the thread milling cutter is used for milling a workpiece, during operation, the sliding seat is in threaded linkage through rotation of the lead screw in the transmission mechanism, then the thread milling cutter is driven to move, and when the thread milling cutter needs to move reversely, the adjusting rod is driven to rotate through the rotating handle, so that the thread milling cutter is driven to move reversely. The adjusting disc and the butt joint sleeve are driven by the clamping block to integrally slide on the transmission rod, so that the linkage gear is meshed with the driving gear or the driven gear, the lead screw rotates reversely, reverse movement of the thread milling cutter is achieved, and the situation that forward and reverse rotation of an output shaft of a motor needs to be frequently adjusted to drive the lead screw to be linked is avoided.

Description

Technical Field

[0001] This utility model relates to a milling cutter, specifically a milling cutter with a helical structure, and belongs to the field of milling cutter technology. Background Technology

[0002] A milling cutter with a spiral structure is also called a tap. A tap is a tool for machining internal threads. According to its shape, it can be divided into spiral flute taps, inclination taps, straight flute taps, and pipe thread taps, etc. According to the usage environment, it can be divided into hand taps and machine taps.

[0003] However, most existing taps have various problems. For example, in a spiral flute tap disclosed in publication number CN114101815A, although an oil reservoir is set up with a liquid delivery pipe fixedly connected to the bottom of the oil reservoir, and connecting pipes are evenly arranged on the outside of the liquid delivery pipe, and an oil inlet is set at the other end of the connecting pipe, the oil inlet is evenly arranged on the inside of the chip groove. During the cutting process, the waste moves upward along the chip groove, and the lubricant at the oil inlet can effectively provide lubrication, prevent the waste chips from clogging in the chip groove, and avoid damage to the tap.

[0004] However, during the tapping process, the tap needs to be moved by the feed mechanism on the machine tool and come into contact with the high-speed rotating workpiece for tapping. Most current feed mechanisms drive the tap by using a lead screw to drive a slider in a threaded linkage. During the reciprocating movement, the lead screw needs to rotate frequently in both directions, which causes the output shaft of the motor used to drive the lead screw to rotate frequently in both directions, affecting the service life of the motor and resulting in unnecessary economic losses and production costs. Utility Model Content

[0005] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a milling cutter with a helical structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A milling cutter with a helical structure includes a base, a support frame, a sliding seat, a thread milling cutter, and a transmission mechanism. The support frame is fixed to one side of the base, the sliding seat is slidably connected to the top of the base, one end of the thread milling cutter is connected to the sliding seat, and the transmission mechanism is disposed on the support frame.

[0008] The transmission mechanism includes a lead screw, a transmission rod, a servo motor, a drive gear, and a linkage unit. The lead screw is rotatably connected to the base and has a threaded hole through the sliding seat. The lead screw is threaded into the threaded hole. The transmission rod is rotatably connected to the support frame, and one end is coaxially fixed to the lead screw. The servo motor is fixed to one side of the support frame, and the drive gear is coaxially fixed to the output shaft of the servo motor.

[0009] As a further embodiment of this utility model: the linkage unit includes a driven rod, a driven gear, a linkage gear, and a docking sleeve. The driven rod is rotatably connected to the support frame and located on one side of the output shaft of the servo motor. The driven gear is coaxially fixed to the driven rod. The driven gear and the driving gear have the same diameter, and the driven gear and the driving gear mesh with each other and are partially misaligned. The docking sleeve is slidably fitted onto the transmission rod. There are two linkage gears, both of which are coaxially fixed to both ends of the docking sleeve, and both linkage gears are slidably connected to the transmission rod.

[0010] As a further improvement of this utility model: a strip-shaped protrusion is provided on the side wall of the transmission rod, and a strip-shaped groove is provided on the inner wall of the docking sleeve, with the protrusion slidingly engaged in the groove.

[0011] As a further embodiment of this utility model: the linkage unit further includes an adjusting rod, a locking block, an adjusting disc, and a throttle handle. One end of the adjusting rod is rotatably connected to the top of the support frame, the locking block is rotatably connected to the other end of the adjusting rod, and a C-shaped groove is provided on the locking block. The adjusting disc is coaxially fixed at the center of the docking sleeve, and the locking block is slidably engaged at the edge of the adjusting disc. The throttle handle is connected to the connecting end of the adjusting rod and the support frame.

[0012] As a further improvement of this utility model: the support frame is symmetrically fixed with limiting rods on both sides, the limiting rods are located on one side of the linkage gear, and the contact end of the limiting rods and the linkage gear is provided with ball bearings.

[0013] As a further improvement of this utility model: the base is provided with a slot with a trapezoidal cross section, and the bottom of the sliding seat is provided with a slider with a trapezoidal cross section, and the slider is slidably engaged in the slot.

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

[0015] In this invention, a thread milling cutter is used to mill the workpiece. During operation, the rotation of the lead screw in the transmission mechanism causes the sliding seat to move in a threaded manner, thereby driving the thread milling cutter to move. When the thread milling cutter needs to move in the opposite direction, the throttle handle drives the adjusting rod to rotate, which in turn causes the adjusting disc and the mating sleeve to slide on the transmission rod through the locking block. This causes the linkage gear to mesh with the driving gear or the driven gear, thereby causing the lead screw to rotate in the opposite direction and thus achieving the reverse movement of the thread milling cutter. This avoids the need to frequently adjust the forward and reverse rotation of the motor output shaft to drive the lead screw, effectively increasing the service life of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the support frame and its overall connection structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the transmission mechanism structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the lead screw and its connection structure of the present invention.

[0020] In the diagram: 1. Base, 2. Support frame, 3. Sliding seat, 4. Thread cutter, 5. Transmission mechanism, 51. Lead screw, 52. Transmission rod, 53. Servo motor, 54. Drive gear, 55. Driven rod, 56. Driven gear, 57. Linkage gear, 58. Connecting sleeve, 59. Adjusting rod, 510. Locking block, 511. Adjusting disc, 512. Turning handle, 6. Limiting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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. Example 1

[0022] like Figures 1 to 4 As shown, a milling cutter with a helical structure includes a base 1, a support frame 2, a sliding seat 3, a thread milling cutter 4, and a transmission mechanism 5. The support frame 2 is fixed to one side of the base 1, the sliding seat 3 is slidably connected to the top of the base 1, one end of the thread milling cutter 4 is connected to the sliding seat 3, and the transmission mechanism 5 is disposed on the support frame 2.

[0023] The transmission mechanism 5 includes a lead screw 51, a transmission rod 52, a servo motor 53, a drive gear 54, and a linkage unit. The lead screw 51 is rotatably connected to the base 1 and has a threaded hole through the sliding seat 3. The lead screw 51 is threaded into the threaded hole. The transmission rod 52 is rotatably connected to the support frame 2 and one end is coaxially fixed with the lead screw 51. The servo motor 53 is fixed on one side of the support frame 2, and the drive gear 54 is coaxially fixed on the output shaft of the servo motor 53.

[0024] The linkage unit includes a driven rod 55, a driven gear 56, a linkage gear 57, and a docking sleeve 58. The driven rod 55 is rotatably connected to the support frame 2 and is located on one side of the output shaft of the servo motor 53. The driven gear 56 is coaxially fixed on the driven rod 55. The driven gear 56 and the driving gear 54 have the same diameter and are meshed with each other and partially offset. The docking sleeve 58 is slidably sleeved on the transmission rod 52. There are two linkage gears 57, both of which are coaxially fixed at both ends of the docking sleeve 58. Both linkage gears 57 are slidably connected to the transmission rod 52. A strip-shaped protrusion is provided on the side wall of the transmission rod 52, and a strip-shaped groove is provided on the inner wall of the docking sleeve 58. The protrusion is slidably engaged in the groove.

[0025] The linkage unit also includes an adjusting rod 59, a locking block 510, an adjusting disc 511, and a throttle 512. One end of the adjusting rod 59 is rotatably connected to the top of the support frame 2, the locking block 510 is rotatably connected to the other end of the adjusting rod 59, and a C-shaped groove is provided on the locking block 510. The adjusting disc 511 is coaxially fixed at the center of the docking sleeve 58, and the locking block 510 is slidably locked at the edge of the adjusting disc 511. The throttle 512 is connected to the connecting end of the adjusting rod 59 and the support frame 2.

[0026] In this invention, a thread milling cutter 4 is used to mill the workpiece. During operation, the rotation of the lead screw 51 in the transmission mechanism 5 causes the sliding seat 3 to be threaded together, thereby driving the thread milling cutter 4 to move. When the thread milling cutter 4 needs to move in the opposite direction, the throttle 512 drives the adjusting rod 59 to rotate, which in turn causes the adjusting disc 511 and the mating sleeve 58 to slide together on the transmission rod 52 through the locking block 510. This causes the linkage gear 57 to mesh with the driving gear 54 or the driven gear 56, thereby causing the lead screw 51 to rotate in the opposite direction, thus realizing the reverse movement of the thread milling cutter 4. This avoids the need to frequently adjust the forward and reverse rotation of the motor output shaft to drive the lead screw 51, effectively increasing the service life of the motor. Example 2

[0027] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0028] Limiting rods 6 are symmetrically fixed on both sides of the support frame 2. The limiting rods 6 are located on one side of the linkage gear 57, and the contact end between the limiting rods 6 and the linkage gear 57 is provided with balls. The limiting rods 6 limit the linkage gear 57, and the balls reduce the frictional resistance between them.

[0029] The base 1 has a slot with a trapezoidal cross section, and the bottom of the sliding seat 3 has a slider with a trapezoidal cross section. The slider slides and engages in the slot, allowing the sliding seat 3 to slide in a directional manner.

[0030] Working principle: When using this milling cutter, first place the high-speed rotating workpiece on one side of the thread milling cutter 4. Then, the servo motor 53 drives the drive gear 54 to rotate. At this time, the driven gear 56 meshes and is linked. Then, one of the linkage gears 57 meshes with the drive gear 54. At this time, the linkage gear 57 drives the transmission rod 52 and the lead screw 51 to be linked in the opposite direction with the output shaft of the servo motor 53, thereby causing the sliding seat 3 to be linked in the thread and driving the thread milling cutter 4 to move so that it abuts against the workpiece for milling. When it is necessary to separate the thread milling cutter 4 from the workpiece, the throttle 512 drives the adjusting rod 59 to rotate. Then, the locking block 510 drives the adjusting plate 511 and the docking sleeve 58 to slide on the transmission rod 52 as a whole, so that the other linkage gear 57 meshes with the driven gear 56. At this time, the linkage gear 57 drives the transmission rod 52 and the lead screw 51 to be linked in the same direction with the output shaft of the servo motor 53, thereby driving the sliding seat 3 to be linked in the opposite direction and driving the thread milling cutter 4 to move in the opposite direction.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] 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 with a helical structure, comprising a base (1), a support frame (2), a sliding seat (3), a thread milling cutter (4), and a transmission mechanism (5), characterized in that, The support frame (2) is fixed on one side of the base (1), the sliding seat (3) is slidably connected to the top of the base (1), one end of the thread milling cutter (4) is connected to the sliding seat (3), and the transmission mechanism (5) is set on the support frame (2); The transmission mechanism (5) includes a lead screw (51), a transmission rod (52), a servo motor (53), a drive gear (54), and a linkage unit. The lead screw (51) is rotatably connected to the base (1) and has a threaded hole through the sliding seat (3). The lead screw (51) is threaded into the threaded hole. The transmission rod (52) is rotatably connected to the support frame (2) and one end is coaxially fixed with the lead screw (51). The servo motor (53) is fixed on one side of the support frame (2). The drive gear (54) is coaxially fixed on the output shaft of the servo motor (53).

2. A milling cutter with a helical structure according to claim 1, characterized in that: The linkage unit includes a driven rod (55), a driven gear (56), a linkage gear (57), and a docking sleeve (58). The driven rod (55) is rotatably connected to the support frame (2) and located on one side of the output shaft of the servo motor (53). The driven gear (56) is coaxially fixed on the driven rod (55). The driven gear (56) and the driving gear (54) have the same diameter, and the driven gear (56) and the driving gear (54) mesh with each other and are partially misaligned. The docking sleeve (58) is slidably sleeved on the transmission rod (52). There are two linkage gears (57), both of which are coaxially fixed at both ends of the docking sleeve (58), and both linkage gears (57) are slidably connected to the transmission rod (52).

3. A milling cutter with a helical structure according to claim 2, characterized in that: The transmission rod (52) has a strip-shaped protrusion on its side wall, and the docking sleeve (58) has a strip-shaped groove on its inner wall, with the protrusion slidingly engaging in the groove.

4. A milling cutter with a helical structure according to claim 2, characterized in that: The linkage unit also includes an adjusting rod (59), a locking block (510), an adjusting disc (511), and a throttle (512). One end of the adjusting rod (59) is rotatably connected to the top of the support frame (2). The locking block (510) is rotatably connected to the other end of the adjusting rod (59) and has a U-shaped groove. The adjusting disc (511) is coaxially fixed at the center of the docking sleeve (58), and the locking block (510) is slidably engaged at the edge of the adjusting disc (511). The throttle (512) is connected to the connecting end of the adjusting rod (59) and the support frame (2).

5. A milling cutter with a helical structure according to claim 2, characterized in that: The support frame (2) has symmetrically fixed limit rods (6) on both sides. The limit rods (6) are located on one side of the linkage gear (57), and the abutting end of the limit rods (6) and the linkage gear (57) is provided with balls.

6. A milling cutter with a helical structure according to claim 1, characterized in that: The base (1) is provided with a slot with a trapezoidal cross section, and the bottom of the sliding seat (3) is provided with a slider with a trapezoidal cross section, and the slider is slidably engaged in the slot.

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