Internal thread milling power whirling milling head

Abstract

The invention discloses an internal thread milling power cyclone milling head, and belongs to the technical field of machine tools and accessories thereof. The device mainly comprises two bases and a power milling head arranged between the two bases, the power milling head is provided with a lifting plate, a connector main shaft is installed on the lifting plate through a bearing, a thread milling cutter is installed in the connector main shaft, meanwhile, rotating plates are rotationally installed on the bases, and angle adjusting parts are arranged between the rotating plates and the bases. A dovetail block is arranged on one side of the rotating plate, meanwhile, a dovetail groove is formed in the lifting plate, and a height adjusting part is arranged between the rotating plate and the lifting plate. According to the internal thread milling power cyclone milling head, the angle of the thread milling cutter in the vertical plane can be changed by arranging the rotating mechanism, meanwhile, the tool nose of the thread milling cutter with the adjusted angle can be lifted to the fixed height by arranging the lifting mechanism, and the tool nose is matched with a preset program; therefore, machining of internal threads with different lead angles can be better completed.

Description

Technical Field

[0001] This application relates to the field of machine tools and accessories, specifically to a power cyclone milling head for internal thread milling. Background Technology

[0002] Thread milling is a process that uses the three-axis linkage (X / Y / Z axis) of a CNC machine tool and helical interpolation commands (such as G02 / G03) to achieve spatial helical motion, thereby producing internal and external threads. Its characteristic is that the tool moves helically along the hole wall or outer circle, and feeds one pitch along the Z axis for each revolution, eventually forming a complete thread. The above thread milling process involves multi-axis motion and complex commands, which makes the thread milling path complex. In the existing technology, there are also ways to simulate the above three-axis linkage method for thread milling through simple motion. For example, the patent with publication number CN201483098U specifically discloses a thread milling power head. This patent simulates the thread milling motion of a machining center. The thread milling is completed by the rotation of the tool spindle, the revolution of the tool spindle around the center of the workpiece with a certain eccentricity, and the linear motion of the tool spindle along the axis of the workpiece. This thread milling method replaces the three-axis linkage with mechanical or hydraulic transmission, and improves the thread milling production efficiency and reduces manufacturing and maintenance costs. However, in the process of machining internal threads, it is sometimes necessary to produce internal threads with different lead angles. The aforementioned patent can only achieve this by changing different forming tools. Therefore, when there are many types of internal threads with different lead angles, it is necessary to frequently change the forming tools. This not only increases the cost of spare tools, but also disrupts the production rhythm. Therefore, it is necessary to provide a power cyclone milling head for internal thread milling to solve the above problems.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0004] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a power cyclone milling head for internal thread milling, which solves the problem of frequent tool replacement when machining internal threads with different lead angles.

[0005] The technical solution adopted by this application to solve its technical problem is: a power cyclone milling head for internal thread milling, comprising two sets of bases, the two sets of bases being mounted on a lathe slide; a power milling head, the power milling head being disposed between the two sets of bases, the power milling head having a lifting plate and an interface spindle with bearings mounted on the lifting plate, the interface spindle being adapted to mount a thread milling cutter for machining; a drive unit, the drive unit being disposed on the lifting plate for driving the interface spindle to rotate; a rotation mechanism, the rotation mechanism having a rotation plate rotatably mounted on the base, an angle adjustment unit for controlling the rotation angle of the rotation plate being disposed between the base and the rotation plate; a lifting mechanism having a dovetail block disposed on one side of the rotation plate, and a dovetail groove disposed on the lifting plate and adapted to the dovetail block, a height adjustment unit for controlling the height position of the lifting plate being disposed between the rotation plate and the lifting plate; wherein, the power milling head is adapted to adjust its angle position and height position under the action of the rotation mechanism and the lifting mechanism.

[0006] Furthermore, the drive unit includes a transmission box fixedly mounted on the lifting plate, a motor fixedly mounted on the outside of the transmission box, the output end of the motor extending into the inside of the transmission box and fixedly mounted with a drive wheel; a driven wheel is fixedly mounted on the interface spindle, and a transmission belt is provided between the driven wheel and the drive wheel.

[0007] Furthermore, the transmission box is also equipped with a hydraulic knife-cutting cylinder.

[0008] Furthermore, the angle adjustment unit includes a support fixedly mounted on one of the sets of rotating plates, an extension plate fixedly mounted on the support, an internal thread on the extension plate, an adjusting screw threaded in the internal thread; a pin plate fixedly mounted at the end of the adjusting screw, a pin hole on the pin plate, a positioning shaft rotatably mounted in the pin hole, and the positioning shaft fixedly mounted to the base.

[0009] Furthermore, the base is provided with an arc-shaped groove, and the rotating plate is provided with multiple sets of positioning holes.

[0010] Furthermore, the height adjustment unit includes a lifting block fixedly installed in the dovetail groove, and a corresponding sliding hole is provided on the rotating plate; the upper end of the rotating plate is provided with a mounting hole, the mounting hole communicating with the sliding hole, and a lifting screw is threadedly installed in the mounting hole, the lifting screw being rotatably installed with the lifting block.

[0011] Furthermore, the internal thread milling power device also includes a matching auxiliary tool setting mechanism. The auxiliary tool setting mechanism includes a tool setting disc, one end of which is provided with a tool setting shaft, which is clamped on a chuck. The other end of the tool setting disc is symmetrically fixed with an upper limit block and a lower limit block. An upper screw is threaded onto the upper limit block, and a lower screw is threaded onto the lower limit block. An upper clamping block is rotatably mounted on the upper screw, and a lower clamping block is rotatably mounted on the lower screw. The tool setting disc is provided with two sets of first sliding grooves, and both the upper and lower clamping blocks are provided with bosses that are adapted to the first sliding grooves.

[0012] Furthermore, clamping arcs are provided on the opposite sides of the upper clamping block and the lower clamping block. When the upper clamping block and the lower clamping block are in contact with each other, the two sets of clamping arcs form a clamping ring, and the measuring part is clamped in the clamping ring.

[0013] Furthermore, the measuring unit includes a tail rod that mates with the clamping ring. The tool setting disc is provided with a second sliding groove, and the tail rod is slidably installed in the second sliding groove. The tail rod is provided with a clearance hole. A slide rod is slidably arranged inside the tail rod, and a spring is installed between the slide rod and the tail rod. A displacement sensor is provided between the slide rod and the tail rod, and a contact ball is installed at the end of the slide rod.

[0014] Furthermore, the thickness of the upper clamping block is greater than the thickness of the lower clamping block, and both the upper limit block and the lower limit block are provided with limit protrusions.

[0015] The beneficial effects of this application are: the internal thread milling power cyclone milling head provided by this application can change the angle of the thread milling cutter in the vertical plane by setting a rotation mechanism, and at the same time, by setting a lifting mechanism, the tip of the thread milling cutter after the angle is adjusted can be raised and lowered to a fixed height and matched with the preset program, so as to better complete the machining of internal threads with different lead angles.

[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a combined product of a power cyclone milling head for internal thread milling according to this application; Figure 2 for Figure 1 A partial schematic diagram of the thread milling cutter and the product section; Figure 3 for Figure 1 A schematic diagram of the overall structure of the power unit for internal thread milling. Figure 4 for Figure 3 Exploded view of the overall structure of the power unit for internal thread milling Figure 1 ; Figure 5 for Figure 3 Exploded view of the overall structure of the power unit for internal thread milling Figure 2 ; Figure 6 for Figure 1 A schematic diagram illustrating the adjustment process of the center height and lead angle of a medium thread milling cutter; Figure 7 for Figure 6 Enlarged schematic diagram of a local structure at point A; Figure 8 for Figure 6 Enlarged schematic diagram of the local structure at point B; Figure 9 for Figure 3 Schematic diagram of the overall structure of the auxiliary tool setting mechanism of the power unit for internal thread milling; Figure 10 for Figure 9 A front view of the overall structure of the auxiliary tool setting mechanism; Figure 11 for Figure 10 Exploded view of the overall structure of the auxiliary tool setting mechanism; Figure 12 A schematic diagram illustrating the process of verifying the angle of the thread milling cutter using the tool setting mechanism; Figure 13 A schematic diagram illustrating the process of verifying the center height of the thread milling cutter using the tool setting mechanism; The following are the labeling elements in the figure: 1. Rotating mechanism; 12. Rotary shaft; 13. Rotating plate; 14. Support; 141. Extension plate; 15. Adjusting screw; 16. Arc groove; 17. Positioning shaft; 18. Positioning hole; 19. Through hole; 110. Pin plate; 2. Power milling head; 21. Motor; 22. Transmission box; 23. Hydraulic tool-changing cylinder; 24. Interface spindle; 25. Drive wheel; 26. Driven wheel; 27. Transmission belt; 28. Lifting plate; 3. Thread milling cutter; 31. Tool holder; 32. Cutter head; 33. Insert; 34. Tool setting hole; 4. Product; 41. Threaded surface; 5. Lifting mechanism; 51. Dovetail block; 52. Sliding hole; 53. Dovetail groove; 54. Lifting block; 55. Lifting screw; 56. Mounting hole; 6. Auxiliary tool setting mechanism; 61. Tool setting shaft; 62. Tool setting disc; 63. Tail rod; 631. Clearance hole; 64. Slide rod; 65. Contact ball; 66. Upper limit block; 67. Lower limit block; 68. Upper screw; 69. Lower screw; 610. Upper clamping block; 611. Lower clamping block; 612. First slide groove; 613. Second slide groove; 7. Base. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] Example 1: This example mainly illustrates the basic structure and working principle of the power device for internal thread milling, specifically: like Figures 1-3 As shown, this application provides a power cyclone milling head for internal thread milling, including two sets of bases 7. The bases 7 serve as the support for the power device for internal thread milling and are installed on a CNC machine tool. In this application, the CNC machine tool refers to a lathe or a turning and milling center. For ease of explanation, the following uses a lathe as an example to illustrate the installation position of the bases 7. Understandably, a lathe is generally composed of a bed, spindle, slide, and tool post mounted on the slide. The internal thread milling power unit replaces the tool post of the lathe. Therefore, the base 7 is mounted on the slide of the lathe. At the same time, a chuck is provided on the spindle of the lathe to facilitate the clamping of the product 4 to be processed. In this application, the direction along the axis of the lathe spindle is defined as the Z-axis, the base 7 can slide on the bed with the slide and move closer to or away from the chuck, and the direction that is on the same horizontal plane as the Z-axis and perpendicular to the Z-axis is defined as the X-axis, and the base 7 can move along the X-axis direction on the slide like a tool post. Meanwhile, a power milling head 2 is provided between the two sets of bases 7. The power milling head 2 is provided with an interface spindle 24 suitable for rotation. The interface spindle 24 can be a conventional BT50 type tool holder or a flange type tool holder. At the same time, a thread milling cutter 3 is installed inside the interface spindle 24. The thread milling cutter 3 has a tool holder 31 that is installed in conjunction with the interface spindle 24. A cutter head 32 is provided at the end of the tool holder 31. At least one set of inserts 33 is installed on the cutter head 32 along the circumferential direction. The product 4 is held in the chuck of the lathe. The product 4 needs to be machined with threaded surface 41. The base 7 can be moved along the X and Z axes by the slide, which in turn drives the power milling head 2 and the thread milling cutter 3 to move synchronously, so that the insert 33 is in a suitable initial machining position. Subsequently, the lathe spindle drives the product 4 to rotate, while the interface spindle 24 drives the thread milling cutter 3 to rotate. The thread milling cutter 3 slowly feeds into the product 4 along the Z-axis with the slide. Through the above three sets of movements, a complete thread surface 41 is machined. Furthermore, the spindle center can discharge water or blow air, which can be directly transmitted to the tool holder 31 and the insert 33 of the thread milling cutter 3, thus playing a cooling role; In this embodiment, in order to achieve the rotation of the interface spindle 24, such as Figures 3-5 As shown, the power milling head 2 has a lifting plate 28, on which a drive unit is provided. The drive unit includes a transmission box 22 fixedly mounted on the lifting plate 28. A motor 21 is fixedly mounted on the outside of the transmission box 22. The output end of the motor 21 extends into the inside of the transmission box 22 and is fixedly mounted with a drive wheel 25. In this embodiment, the motor 21 uses a power of 7.5kW, which can provide strong power. Meanwhile, a driven wheel 26 is fixedly installed on the interface spindle 24. A transmission belt 27 is provided between the driven wheel 26 and the driving wheel 25. When the motor 21 rotates, it can drive the driving wheel 25 to rotate, which in turn drives the driven wheel 26 to rotate through the transmission belt 27, and drives the interface spindle 24 to rotate through the driven wheel 26, so as to realize the rotation of the thread milling cutter 3. In this embodiment, a hydraulic cutter cylinder 23 is also provided on the transmission box 22 to enable the quick installation and removal of the thread milling cutter 3.

[0021] While the above process can achieve the forming of the specified thread surface 41, in the machining of internal threads, it is sometimes necessary to produce internal threads with different lead angles. In order to avoid changing the tool, such as Figures 3-4 As shown, a rotating mechanism 1 is installed between the base 7 and the power milling head 2. The rotating mechanism 1 is used to adjust the angle of the power milling head 2 in the vertical plane, thereby changing the angle of the cutting tool 33 and thus realizing the adjustment of the lead angle. The rotating mechanism 1 includes through holes 19 coaxially arranged on two sets of bases 7. A rotating shaft 12 is rotatably installed inside each of the two sets of through holes 19. A rotating plate 13 is fixedly installed on the rotating shaft 12, so that the rotating plate 13 can rotate around the rotating shaft 12 on the base 7. In order to drive the rotation of the rotating plate 13, an angle adjustment part is provided between the base 7 and the rotating plate 13. The angle adjustment part includes a support 14 fixedly installed on one of the rotating plates 13. An extension plate 141 is fixedly installed on the support 14. An internal thread is provided on the extension plate 141. An adjusting screw 15 is threaded in the internal thread. The adjusting screw 15 is adapted to rotate in the first internal thread. Meanwhile, a pin plate 110 is fixedly installed at the end of the adjusting screw 15. The pin plate 110 is provided with a pin hole, and a positioning shaft 17 is rotatably installed in the pin hole. The positioning shaft 17 is fixedly installed with the base 7. Thus, when the adjusting screw 15 rotates in the internal thread, due to the fixed installation of the positioning shaft 17 and the base 7, the adjusting screw 15 will rotate around the positioning shaft 17 as the center, and then drive the rotating plate 13 to rotate around the rotating shaft 12 through the support 14. In this embodiment, the power milling head 2 can be installed with the rotating plate 13, so that the rotation of the rotating plate 13 drives the power milling head 2 to rotate synchronously, thereby adjusting the rotation of the tool holder 31 in the vertical plane, so as to adjust the angle of the blade 33, and thus realize the adjustment of the lead angle. In order to fix the adjusted rotating plate 13, such as Figures 3-4 As shown, an arc-shaped groove 16 centered on the through hole 19 is provided on the base 7, and multiple sets of positioning holes 18 centered on the rotating shaft 12 are provided on the rotating plate 13. Thus, when the rotating plate 13 is adjusted to the position, the bolt passes through the arc-shaped groove 16 and locks in the positioning hole 18, thereby fixing the rotating plate 13 to the base 7. When adjustment is required, the locking can be released by unscrewing the screw.

[0022] Although the above process can adjust the angle of the insert 33, after the insert 33 is adjusted in the vertical plane, the tip position of the insert 33 will deviate from the X-axis. In other words, the lathe's feed and retraction movements are generally performed along the X-axis, and the starting position of the programming is also the intersection of the X-axis and the product 4. When the insert 33 is tilted up or down in the vertical plane, the tool holder 31 will have a certain tilt angle, which will cause the tip position of the insert 33 to be higher or lower than the X-axis, resulting in overcutting under the original program, which is not conducive to the machining of the thread surface 41 of the product 4. To solve the above problems, such as Figure 5As shown, a lifting mechanism 5 is provided between the rotating plate 13 and the power milling head 2. The lifting mechanism 5 includes a dovetail block 51 provided on one side of the rotating plate 13, and a dovetail groove 53 provided on the lifting plate 28. The dovetail groove 53 is adapted to the dovetail block 51, so that the lifting plate 28 can drive the power milling head 2 to slide on the rotating plate 13 through the cooperation of the dovetail groove 53 and the dovetail block 51. In order to drive the power milling head 2 to slide, a height adjustment part is provided between the lifting plate 28 and the rotating plate 13. The height adjustment part includes a lifting block 54 fixedly installed in the dovetail groove 53, and a corresponding sliding hole 52 is provided on the rotating plate 13, so that the lifting block 54 can slide in the sliding hole 52. Meanwhile, a mounting hole 56 is provided at the upper end of the rotating plate 13. The mounting hole 56 is connected to the sliding hole 52, and a lifting screw 55 is threadedly installed in the mounting hole 56. The lifting screw 55 is rotatably installed with the lifting block 54. Thus, when the lifting screw 55 rotates in the mounting hole 56, it can drive the lifting plate 28 to slide through the lifting block 54, thereby driving the power milling head 2 to slide synchronously. Therefore, when the tip of the blade 33, after the angle adjustment, needs to be aligned with the X-axis, the rotating lifting screw 55 drives the power milling head 2 to slide. Then, the position is manually measured to verify whether there is any deviation. Once the requirements are met, the product 4 is processed. To better understand the entire adjustment process, please refer to... Figures 6-8 ,in Figure 6 This demonstrates how the tip position of the thread milling cutter 3, initially horizontal and aligned with the X-axis, is adjusted sequentially by angle and height until the tip is tilted and aligned with the X-axis. During this process, the lead angle of the threaded surface 41 on the workpiece 4 is changed. Figures 7-8 It demonstrates the change in the lead angle (from a symmetrical state to an asymmetrical state), while also meeting the requirements for program initialization.

[0023] Example 2: Although the angle and height of the thread milling cutter tip were adjusted in Example 1, the adjustment process was all done manually, and manual measurement was required after the adjustment was completed. Since the tip position is difficult to measure, and the accuracy of manual measurement varies depending on the worker's skill level, deviations are inevitable, which may result in the inability to achieve the desired processing effect. To address the aforementioned issues, this embodiment includes an auxiliary tool setting mechanism 6. This mechanism is installed on the lathe chuck before the product 4 is machined and measures the adjusted position of the thread milling cutter 3 to ensure that the tip position of the thread milling cutter 3 meets the requirements. Specifically: like Figures 9-11As shown, the auxiliary tool setting mechanism 6 includes a tool setting disc 62, one end of which is provided with a tool setting shaft 61, which is used to clamp on the chuck, so that the axis of the tool setting disc 62 coincides with the axis of the lathe spindle. An upper limit block 66 and a lower limit block 67 are symmetrically fixed at the other end of the cutter head 62. An upper screw 68 is threaded on the upper limit block 66 and a lower screw 69 is threaded on the lower limit block 67. An upper clamping block 610 is rotatably mounted on the upper screw 68 and a lower clamping block 611 is rotatably mounted on the lower screw 69. Meanwhile, two sets of first sliding grooves 612 are provided on the tool setting disc 62, and bosses (not shown in the figure) that are adapted to the first sliding grooves 612 are provided on the upper clamping block 610 and the lower clamping block 611 respectively. Thus, when the upper screw 68 and the lower screw 69 are rotated, the upper clamping block 610 and the lower clamping block 611 can be driven to slide on the first sliding grooves 612 respectively, so as to achieve the action of moving closer or further away from each other. Continue to refer to Figures 9-10 Clamping arcs are provided on the opposite sides of the upper clamping block 610 and the lower clamping block 611. When the upper clamping block 610 and the lower clamping block 611 are in contact with each other, the two sets of clamping arcs form a clamping ring. A measuring part is clamped in the clamping ring. The measuring part is used to detect the tip position of the adjusted thread milling cutter 3. The measuring unit includes a tail rod 63 that cooperates with the clamping ring, and a second slide groove 613 is provided on the tool setting disc 62. The tail rod 63 is slidably installed in the second slide groove 613, and an clearance hole 631 is provided on the tail rod 63 so that the upper screw 68 and the lower screw 69 can pass through the tail rod 63. The tail rod 63 has a sliding rod 64 inside, and a spring (not shown in the figure) is installed between the sliding rod 64 and the tail rod 63. The spring is used to maintain the relative position of the sliding rod 64 and the tail rod 63 in the initial state, and to reset after the relative position of the sliding rod 64 and the tail rod 63 changes. It should be noted that a displacement sensor is installed between the slide rod 64 and the tail rod 63. When the relative position of the slide rod 64 and the tail rod 63 changes, the displacement sensor can collect the distance of their relative movement. Meanwhile, a contact ball 65 is installed at the end of the slide bar 64, which is used to contact the object being measured. Understandably, the measurement unit is actually similar to a retractable edge finder. It takes points by contacting the object being measured, and then calculates the outline of the object through the system's built-in program, thereby finding the center and outline parameters of the object. In this embodiment, in order to simultaneously measure both angle and height, the upper clamping block 610 and the lower clamping block 611 are set to have different thicknesses. For ease of explanation, the upper clamping block 610 is set to have a greater thickness than the lower clamping block 611, and limit protrusions (not shown in the figure) are provided on both the upper limit block 66 and the lower limit block 67. These limit protrusions are used to limit the upper position of the upper clamping block 610 and the lower position of the lower clamping block 611. The following combination Figures 12-13 This section describes how to measure the adjusted position of the thread milling cutter 3 using the auxiliary tool setting mechanism 6, in detail; Figure 12 The demonstration shows the testing method for adjusting the angle of the thread cutter 3. At this time, the lower clamping block 611 is adjusted to the bottom and is in contact with the limiting protrusion on the lower limit block 67. Then, the upper clamping block 610 is brought close to it and clamps the measuring part. At this time, the axis of the measuring part is parallel to the Z-axis and is far away. The drive slide moves the thread cutter 3 closer to the chuck until the end face of the thread cutter 3 contacts the contact ball 65 and squeezes the contact ball 65. At this time, the position of the contact ball 65 is recorded by the displacement sensor. Then, the chuck is slowly rotated, causing the measuring unit to rotate. At this time, the contact ball 65 contacts different positions on the end face of the thread cutter 3. Because the thread cutter 3 is in an inclined state, the contact ball 65 is squeezed to different degrees during the rotation. Then, the displacement sensor records the position of the contact ball 65 at different contact points after one revolution. By combining the different positions mentioned above, a plane can be simulated, which is the end face profile of the thread milling cutter 3. Then, the inclination of the end face of the thread milling cutter 3 is calculated, and the angle of the thread milling cutter 3 after adjustment is obtained. If the angle meets the requirements, product 4 can be processed. If the angle does not meet the requirements, repeat the adjustment and measurement steps until it meets the requirements.

[0024] Figure 13 The demonstration shows the test method for adjusting the height of the thread milling cutter 3. At this time, the upper clamping block 610 is adjusted to the top and is in contact with the limiting protrusion on the upper limit block 66. Then, the lower clamping block 611 is brought close to it and clamps the measuring part. At this time, the axis of the measuring part is parallel to the Z-axis and the distance is relatively close. In this embodiment, a tool setting hole 34 is coaxially provided on the end face of the thread milling cutter 3, thereby driving the slide to move the thread milling cutter 3 closer to the chuck until the contact ball 65 extends into the interior of the tool setting hole 34 and is flush with the tip of the thread milling cutter 3. At this time, the drive slide moves the thread milling cutter 3 left and right until the contact ball 65 contacts the inner wall of the tool setting hole 34, and the position data of the contact ball 65 is collected at this time. Then, the thread cutter 3 is slowly rotated by the motor 21 and then stopped. The slide is then driven to move the thread cutter 3 left and right, and the contact ball 65 contacts the inner wall of the tool setting hole 34. The position data of the contact ball 65 is collected again. This action is repeated to collect more data. After collecting enough data, the contour shape of the tool setting hole 34 can be simulated through multiple sets of position data, and then the position of the axis of the tool setting hole 34 can be obtained. Then, by calculating the fixed position relationship between the tool setting hole 34 and the tip of the thread milling cutter 3, the height position of the tip can be obtained. If the height meets the requirements, product 4 can be processed. If the height does not meet the requirements, repeat the adjustment and measurement steps until it meets the requirements. Of course, after obtaining the outline shape of the tool setting hole 34, the angle of the axis of the tool setting hole 34 can also be calculated, and then the angle of the thread milling cutter 3 after adjustment can be verified a second time.

[0025] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A power cyclone milling head for internal thread milling, wherein the power unit for internal thread milling is mounted on a lathe, characterized in that: The internal thread milling power unit includes: two sets of bases (7) mounted on the slide of a lathe; a power milling head (2) disposed between the two sets of bases (7), the power milling head (2) having a lifting plate (28) and an interface spindle (24) with bearings mounted on the lifting plate (28), the interface spindle (24) being adapted to mount a thread milling cutter for machining; a drive unit disposed on the lifting plate (28) for driving the interface spindle (24) to rotate; and a rotating mechanism (1) having a rotating plate (13) rotatably mounted on the bases (7). An angle adjustment section for controlling the rotation angle of the rotating plate (13) is provided between the base (7) and the rotating plate (13); a lifting mechanism (5) is provided on a dovetail block (51) on one side of the rotating plate (13) and a dovetail groove (53) adapted to the dovetail block (51) is provided on the lifting plate (28); a height adjustment section for controlling the height position of the lifting plate (28) is provided between the rotating plate (13) and the lifting plate (28); wherein, the power milling head (2) is adapted to adjust the angle position and height position under the action of the rotating mechanism (1) and the lifting mechanism (5).

2. The power cyclone milling head for internal thread milling according to claim 1, characterized in that: The drive unit includes a transmission box (22) fixedly installed on the lifting plate (28), a motor (21) fixedly installed on the outside of the transmission box (22), the output end of the motor (21) extends into the inside of the transmission box (22) and a drive wheel (25) is fixedly installed thereon; a driven wheel (26) is fixedly installed on the interface spindle (24), and a transmission belt (27) is provided between the driven wheel (26) and the drive wheel (25).

3. The power cyclone milling head for internal thread milling according to claim 2, characterized in that: The transmission box (22) is also equipped with a hydraulic knife-cutting cylinder (23).

4. The power cyclone milling head for internal thread milling according to claim 3, characterized in that: The angle adjustment unit includes a support (14) fixedly installed on one of the rotating plates (13). An extension plate (141) is fixedly installed on the support (14). An internal thread is provided on the extension plate (141), and an adjusting screw (15) is threaded in the internal thread. A pin plate (110) is fixedly installed at the end of the adjusting screw (15). A pin hole is provided on the pin plate (110), and a positioning shaft (17) is rotatably installed in the pin hole. The positioning shaft (17) is fixedly installed with the base (7).

5. A power cyclone milling head for internal thread milling according to claim 4, characterized in that: The base (7) is provided with an arc groove (16), and the rotating plate (13) is provided with multiple sets of positioning holes (18).

6. The power cyclone milling head for internal thread milling according to claim 5, characterized in that: The height adjustment unit includes a lifting block (54) fixedly installed in the dovetail groove (53), and a corresponding sliding hole (52) is provided on the rotating plate (13); the upper end of the rotating plate (13) is provided with a mounting hole (56), the mounting hole (56) is connected to the sliding hole (52), and a lifting screw (55) is threaded in the mounting hole (56), and the lifting screw (55) is rotatably installed with the lifting block (54).

7. The power cyclone milling head for internal thread milling according to claim 1, characterized in that: The internal thread milling power device also includes a matching auxiliary tool setting mechanism (6). The auxiliary tool setting mechanism (6) includes a tool setting disc (62). One end of the tool setting disc (62) is provided with a tool setting shaft (61), which is clamped on a chuck. The other end of the tool setting disc (62) is symmetrically fixed with an upper limit block (66) and a lower limit block (67). An upper screw (68) is threaded on the upper limit block (66), and a lower screw (69) is threaded on the lower limit block (67). An upper clamping block (610) is rotatably mounted on the upper screw (68), and a lower clamping block (611) is rotatably mounted on the lower screw (69). The tool setting disc (62) is provided with two sets of first sliding grooves (612). Both the upper clamping block (610) and the lower clamping block (611) are provided with bosses that are adapted to the first sliding grooves (612).

8. A power cyclone milling head for internal thread milling according to claim 7, characterized in that: Clamping arcs are provided on the opposite sides of the upper clamping block (610) and the lower clamping block (611). When the upper clamping block (610) and the lower clamping block (611) are in contact with each other, the two sets of clamping arcs form a clamping ring, and the measuring part is clamped in the clamping ring.

9. A power cyclone milling head for internal thread milling according to claim 8, characterized in that: The measuring unit includes a tail rod (63) that mates with a clamping ring. A second slide groove (613) is provided on the tool setting disc (62). The tail rod (63) is slidably installed in the second slide groove (613). An clearance hole (631) is provided on the tail rod (63). A slide rod (64) is slidably installed inside the tail rod (63). A spring is installed between the slide rod (64) and the tail rod (63). A displacement sensor is provided between the slide rod (64) and the tail rod (63). A contact ball (65) is installed at the end of the slide rod (64).

10. A power cyclone milling head for internal thread milling according to claim 9, characterized in that: The thickness of the upper clamping block (610) is greater than the thickness of the lower clamping block (611), and both the upper limit block (66) and the lower limit block (67) are provided with limit protrusions.

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