A cyclone thread milling device

Abstract

The utility model provides a whirlwind mills thread processing device belongs to the technical field of milling machine, it includes: round bar, its one end and whirlwind milling machine positioner mechanism's drive end fixed connection, the outer wall on its other end is provided with the chute, rectangular board, its bottom is located in the chute, and its bottom outer wall and the top end opening inner wall of chute are contacted, the bottom of rectangular board is equipped with reset mechanism for driving the reset sliding of rectangular board. This improved whirlwind mills thread processing device uses, can make the milling cutter be located on the reciprocating and smooth thread cutting path on the steel pipe inner wall, gradually complete the rapid cutting processing of thread on the steel pipe inner wall with the shallow depth, and in the cutting process, the milling cutter always is in the same horizontal track reciprocating sliding, almost will not appear thread straightness deviation or the situation of disorder tooth, the processing effect of steel pipe inner thread is better.

Description

Technical Field

[0001] This utility model relates to the technical field of milling machines, and specifically to a whirlwind milling thread processing device. Background Technology

[0002] Cyclone milling is a high-efficiency and high-precision thread machining method. Its working principle is that cyclone milling completes thread machining through the combined motion of tool rotation and workpiece rotation, combined with axial feed. There is a certain angle between the tool axis and the workpiece axis, forming a helical cutting path.

[0003] In the process of machining internal threads on steel pipes, existing milling machines often directly cut the inner wall of the steel pipe with a milling cutter. Since the cutting depth is often quite deep, the distance between the milling cutter and the inner wall of the steel pipe is adjusted by the adjustment structure to adjust the opening depth of the internal thread. This may result in large surface roughness of the thread or deviation in the straightness of the thread, affecting the machining effect of the internal thread on the steel pipe. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a cyclone milling thread processing device that enables the milling cutter to form a smooth reciprocating spiral trajectory inside the steel pipe, and to gradually complete the cutting of the internal thread of the steel pipe at a shallow depth. The thread is relatively smooth and there is almost no straightness deviation or tooth breakage.

[0005] To solve the above problems, this utility model provides a cyclone milling thread processing device, including: a round rod, one end of which is fixedly connected to the drive end of the cyclone milling machine adjustment mechanism, and a groove is provided on the outer wall of the other end;

[0006] A rectangular plate has its bottom located in a groove, and the outer peripheral wall of its bottom is in contact with the inner wall of the top opening of the groove. The bottom end of the rectangular plate is provided with a reset mechanism for driving the rectangular plate to reset and slide. A mounting groove is opened in the middle of its top end, and a milling cutter is fixedly installed in the top opening of the mounting groove by bolts. A constraint mechanism is provided at its top end for constraining the cutting depth of the milling cutter.

[0007] The limiting mechanism, located within a rectangular plate, is used to constrain and limit the milling cutter.

[0008] Preferably, the reset mechanism includes a magnetic plate one, which is fixedly mounted on the bottom end of the rectangular plate, and its outer peripheral wall is in contact with the inner wall of the slide groove, and a magnetic plate two is fixedly mounted on the inner bottom wall of the slide groove.

[0009] Preferably, the limiting mechanism includes a limiting plate, the two sides of which are in contact with the inner wall of the mounting groove, and the top side of which is in contact with the bottom side of the milling cutter. Its width is equal to the width of the rectangular plate, and two threaded rods are rotatably mounted inside it. Two threaded grooves are opened on the inner bottom wall of the mounting groove, and the bottom end of the threaded rod is threaded into the corresponding threaded groove.

[0010] Preferably, the constraint mechanism includes several rotating shafts, which are disposed opposite to each other at the top of the rectangular plate, and both ends of each rotating shaft are rotatably connected to the rectangular plate through connecting blocks.

[0011] Preferably, two scrapers are fixedly mounted on the top of the rectangular plate, and each scraper is located between two corresponding rotating shafts, with the top of the scraper and the top of the rotating shaft being coplanar.

[0012] Preferably, the milling cutter is a triangular milling insert, and the tip of the milling cutter extends above the tip of the scraper.

[0013] This utility model has the following beneficial effects:

[0014] When this improved cyclone milling thread processing device is used, the milling cutter can form a reciprocating and smooth thread cutting path on the inner wall of the steel pipe, and gradually complete the rapid cutting of the thread on the inner wall of the steel pipe at a shallow depth. During the cutting process, the milling cutter always slides back and forth on the same transverse trajectory, and there is almost no deviation in the straightness of the thread or the teeth being broken. The processing effect of the internal thread of the steel pipe is better. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A 3D image after rotating 180 degrees clockwise;

[0018] Figure 3 This is a front view of the internal structure of a portion of the round rod of this utility model;

[0019] Figure 4 This is a perspective view of a portion of the rectangular plate of this utility model;

[0020] Figure 5 This is a perspective view of the internal structure of a rectangular plate of this utility model.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Round rod; 2. Slide groove; 3. Rectangular plate; 4. Mounting groove; 5. Milling cutter; 6. Reset mechanism; 61. Magnetic plate one; 62. Magnetic plate two; 7. Limiting mechanism; 71. Limiting plate; 72. Threaded rod; 73. Threaded groove; 8. Constraint mechanism; 81. Rotating shaft; 82. Scraper. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] See also Figure 1 , Figure 3 Figure 5 As shown, according to an embodiment of the present utility model, a cyclone milling thread processing device is provided, including: a round rod 1, one end of which is fixedly connected to the drive end of the cyclone milling machine adjustment mechanism, and a groove 2 is provided on the outer wall of the other end of which;

[0028] A rectangular plate 3 has its bottom located in a slide groove 2, and its outer peripheral wall at the bottom is in contact with the inner wall of the top opening of the slide groove 2. The bottom end of the rectangular plate 3 is provided with a reset mechanism 6 for driving the rectangular plate 3 to reset and slide. A mounting groove 4 is provided in the middle of its top end, and a milling cutter 5 is fixedly mounted in the top opening of the mounting groove 4 by bolts. A constraint mechanism 8 is provided at its top end for constraining the cutting depth of the milling cutter 5.

[0029] The limiting mechanism 7 is located inside the rectangular plate 3 and is used to constrain and limit the milling cutter 5.

[0030] In this embodiment, when using the improved cyclone milling thread processing device, (please refer to...) Figure 1 and Figure 2 As shown, the drive end of the cyclone milling machine's adjustment mechanism is fitted with a turntable, and a driver is fixedly mounted on the back of the turntable to drive its rotation. One end of the round rod 1 is fixedly connected to the turntable by bolts. The driver can consist of a motor, a gear set, and an output shaft, or it can consist of a motor, a pulley, a transmission belt, and an output shaft. The operator first clamps and fixes the steel pipe onto the cyclone milling machine's fixture according to the existing usage method. Then, the adjustment mechanism is activated to push the round rod 1 towards the steel pipe. The round rod 1 drives the milling cutter 5 to move laterally and uniformly within the steel pipe. When the milling cutter 5 moves into the steel pipe, the driver drives the round rod 1 to rotate at a corresponding speed. Due to the centrifugal force pulling the rectangular plate 3, the reset mechanism 6... The constraint limit is automatically released to throw part of the rectangular plate 3 out of the slide groove 2 until the milling cutter 5 comes into contact with the inner wall of the steel pipe. (The contact force between the sharp end of the milling cutter 5 and the inner wall of the steel pipe depends on the rotation speed of the milling cutter 5, and the lateral movement speed of the milling cutter 5 depends on the rotation speed of the milling cutter 5.) (During the process of inserting the round rod 1 into the steel pipe, the driver drives the round rod 1 to rotate in the forward direction. When the round rod 1 is pulled out of the steel pipe, the driver drives the round rod 1 to rotate in the reverse direction.) The milling cutter 5 comes into contact with the inner wall of the steel pipe. With the rotation and lateral reciprocating movement of the milling cutter 5, it can continuously move in a reciprocating spiral trajectory inside the steel pipe. Thus, the excess part on the inner wall of the steel pipe is slowly scraped off by the mutual contact between the milling cutter 5 and the inner wall of the steel pipe, thereby forming a thread of the corresponding specification on the inner wall of the steel pipe.

[0031] In summary, when this improved cyclone milling thread processing device is used, the shallow cutting depth combined with the extremely fast cutting speed, along with the smooth path of the reciprocating helical trajectory of the milling cutter 5, can cut relatively smooth threads inside the steel pipe. Moreover, during the cutting process, the milling cutter 5 always slides back and forth on the same transverse trajectory, so there is almost no deviation in thread straightness or broken teeth, resulting in good processing effect of internal threads in steel pipes.

[0032] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the reset mechanism 6 includes a magnetic plate 61, which is fixedly mounted on the bottom end of the rectangular plate 3, and its outer peripheral wall is in contact with the inner wall of the slide groove 2. A magnetic plate 62 is fixedly mounted on the inner bottom wall of the slide groove 2.

[0033] In this embodiment, please refer to Figure 1 and Figure 3 As shown, after the threading of the inner wall of the steel pipe is completed, the driver stops driving the round rod 1 and restores the angle of the round rod 1, that is, the milling cutter 5 is located at the top of the round rod 1. At this time, due to the gravity of the rectangular plate 3 and the magnetic plate 61, the rectangular plate 3 extends out of the slide 2 and retracts back into the slide 2 until the magnetic plate 61 and the inner wall of the slide 2 come into contact with each other. At this time, the distance between the magnetic plate 61 and the magnetic plate 62 is small, and a large attraction is generated between the magnetic plate 61 and the magnetic plate 62, so that the rectangular plate 3 remains stable in the position of the slide 2 without being subjected to a large external force. At this time, the driver slowly drives the round rod 1 to rotate and adjust the position of the milling cutter 5, that is, adjust the starting position of the opening of the inner thread of the steel pipe, so that the rectangular plate 3 will not slide out of the slide 2 and affect the insertion of the round rod 1 into the steel pipe.

[0034] In a further preferred embodiment of this utility model, such as Figure 2 , Figure 4 and Figure 5 As shown, the limiting mechanism 7 includes a limiting plate 71, whose two sides are in contact with the inner wall of the mounting groove 4, and whose top side is in contact with the bottom side of the milling cutter 5. Its width is equal to the width of the rectangular plate 3. Two threaded rods 72 are rotatably mounted inside it. Two threaded grooves 73 are opened on the inner bottom wall of the mounting groove 4, and the bottom end of the threaded rod 72 is threaded into the corresponding threaded groove 73.

[0035] In this embodiment, please refer to Figure 2 , Figure 4 and Figure 5 As shown, when replacing the milling cutter 5, the worker can unscrew the bolt from the rectangular plate 3 and then directly remove the milling cutter 5 from the mounting slot 4.

[0036] When installing the milling cutter 5, the operator first adjusts the distance between the top side of the limiting plate 71 and the top side of the rectangular plate 3 by rotating the threaded rod 72 through the sleeve according to the size of the milling cutter 5. This allows for the installation of milling cutters 5 of different sizes (different sizes of milling cutters 5 can change the opening depth and width of the inner groove of the steel pipe thread). After the position of the limiting plate 71 is adjusted, the operator inserts the milling cutter 5 into the top opening of the mounting groove 4 until the milling cutter 5 contacts the bottom side of the limiting plate 71, and the intact end of the milling cutter 5 protrudes from the mounting groove 4. Then, the bolt is screwed back into the rectangular plate 3, and the self-locking nut on the bolt is installed. This completes the replacement or installation of the milling cutter 5, and the operation is relatively simple.

[0037] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the constraint mechanism 8 includes several rotating shafts 81, which are disposed opposite to each other at the top of the rectangular plate 3, and both ends of each rotating shaft 81 are rotatably connected to the rectangular plate 3 through connecting blocks.

[0038] In this embodiment, please refer to Figure 4 As shown, during the threading process on the inner wall of the steel pipe, as the thread is opened, the distance between the rotating shaft 81 and the inner wall of the steel pipe decreases. After the threading on the inner wall of the steel pipe is completed, the outer peripheral wall of the rotating shaft 81 comes into contact with the inner wall of the steel pipe. At this time, as the helical trajectory of the milling cutter 5 moves, the rotating shaft 81 rolls synchronously on the inner wall of the steel pipe, so that the milling cutter 5 will not further open the thread on the inner wall of the steel pipe. At this time, as the milling cutter 5 moves on the steel pipe, the milling cutter 5 can slide against the inner wall of the thread groove, scraping off the burrs on the inner wall of the thread groove, so that the inner wall of the thread groove on the inner wall of the steel pipe is smoother.

[0039] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 4 As shown, two scrapers 82 are fixedly mounted on the top of the rectangular plate 3, and each scraper 82 is located between two corresponding rotating shafts 81. The top of the scraper 82 is coplanar with the top of the rotating shaft 81.

[0040] In this embodiment, please refer to Figure 4 As shown, when the milling cutter 5 scrapes the burrs on the inner wall of the thread groove, the cutting edge of the scraper 82 simultaneously slides along the inner wall of the steel pipe in a spiral trajectory, thereby scraping off the burrs on the opening edge of the thread groove, so as to make the thread on the inner wall of the steel pipe smoother.

[0041] In a further preferred embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the milling cutter 5 is a triangular milling insert, and the tip of the milling cutter 5 extends above the tip of the scraper 82.

[0042] In this embodiment, please refer to Figure 4 As shown, when one corner of the triangular end mill 5 is damaged, the unworn corner can be extended from the mounting slot 4 by rotating the end mill 5, thus extending the service life of the end mill 5.

[0043] Working principle: When this improved cyclone milling thread processing device is used, the cyclone milling machine adjustment mechanism drives the round rod 1 to move laterally back and forth inside the steel pipe. At the same time, the driver drives the milling cutter 5 to rotate at a constant speed around the round rod 1, so that the milling cutter 5 moves back and forth smoothly in a spiral trajectory against the corresponding position on the inner wall of the steel pipe, and finally gradually scrapes away the excess material on the corresponding position on the inner wall of the steel pipe, so as to form a thread of the corresponding specification on the inner wall of the steel pipe.

[0044] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A cyclone milling thread processing device, characterized in that, include: A round rod (1) has one end fixedly connected to the drive end of the cyclone milling machine adjustment mechanism, and a groove (2) is provided on the outer wall of the other end. A rectangular plate (3) has its bottom located in a groove (2), and its outer peripheral wall is in contact with the inner wall of the top opening of the groove (2). The bottom end of the rectangular plate (3) is provided with a reset mechanism (6) for driving the rectangular plate (3) to reset and slide. A mounting groove (4) is provided in the middle of its top end, and a milling cutter (5) is fixedly installed in the top opening of the mounting groove (4) by bolts. A constraint mechanism (8) is provided at its top end for constraining the cutting depth of the milling cutter (5). The limiting mechanism (7) is located inside the rectangular plate (3) and is used to constrain and limit the milling cutter (5).

2. The cyclone milling thread processing device according to claim 1, characterized in that: The reset mechanism (6) includes a magnetic plate one (61), which is fixedly installed at the bottom end of the rectangular plate (3), and its outer peripheral wall is in contact with the inner wall of the slide groove (2). A magnetic plate two (62) is fixedly installed on the inner bottom wall of the slide groove (2).

3. The cyclone milling thread processing device according to claim 2, characterized in that: The limiting mechanism (7) includes a limiting plate (71), whose two sides are in contact with the inner wall of the mounting groove (4), and whose top side is in contact with the bottom side of the milling cutter (5). Its width is equal to the width of the rectangular plate (3), and two threaded rods (72) are installed in it in a relatively rotatable manner. Two threaded grooves (73) are opened on the inner bottom wall of the mounting groove (4), and the bottom end of the threaded rod (72) is threaded into the corresponding threaded groove (73).

4. The cyclone milling thread processing device according to claim 3, characterized in that: The constraint mechanism (8) includes several rotating shafts (81), which are positioned opposite each other at the top of the rectangular plate (3), and both ends of each rotating shaft (81) are rotatably connected to the rectangular plate (3) through connecting blocks.

5. The cyclone milling thread processing device according to claim 4, characterized in that: The top of the rectangular plate (3) is fixedly equipped with two scrapers (82), and each scraper (82) is located between two corresponding rotating shafts (81). The top of the scraper (82) is coplanar with the top of the rotating shaft (81).

6. The cyclone milling thread processing device according to claim 5, characterized in that: The milling cutter (5) is a triangular milling insert, and the top of the milling cutter (5) extends above the top of the scraper (82).

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