Machine tool special for milling groove

Abstract

The invention belongs to the technical field of numerical control machine tools, and particularly relates to a special groove milling machine tool which is characterized in that the top of a base plate is fixedly connected with a frame body through bolts, a barrel is horizontally arranged at the top of the left side of the frame body, and an outer diameter fixing unit is arranged around the outer side of the barrel. By integrating the outer diameter fixing unit and the inner diameter inner supporting unit, station integration of the groove milling procedure of the inner wall and the outer wall of the circular pipe is achieved, frequent workpiece transferring and repeated clamping and positioning are avoided, the machining efficiency is improved, and redundant investment of equipment is reduced; meanwhile, the three-dimensional linkage machining capacity is given to the milling cutter through the synergistic effect of the adjusting unit and the electric guide rail, the high-precision machining requirement for complex groove profiles or spatial curved surfaces is met, the machining stability and precision are ensured through the precise positioning and clamping mechanism of the outer diameter fixing unit and the inner diameter inner supporting unit, and the rotating unit drives the round pipe to flexibly rotate; and in combination with the three-dimensional moving capability of the milling cutter, the adaptability and universality of the machine tool to circular pipes with different shapes and sizes are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of numerically controlled machine tools, in particular to a special machine tool for slot milling. Background Art

[0002] A special-purpose machine tool is a machine that processes metal blanks into machine parts. Since it is the machine that manufactures machines, it is also called a mother machine or machine tool, and is conventionally referred to as a special-purpose machine tool. In modern machinery manufacturing, there are many methods for processing mechanical parts: in addition to cutting, there are also casting, forging, welding, stamping, extrusion, etc. However, all parts requiring high precision and fine surface finish generally require final processing on special-purpose machine tools. In general machinery manufacturing, the processing workload of special-purpose machine tools accounts for 40% to 60% of the total machine manufacturing workload. Special-purpose machine tools play a significant role in the modernization of the national economy.

[0003] However, the current design of most slot milling machines fails to achieve station integration of the milling processes for the inner and outer walls of circular tubes in the processing flow, resulting in frequent transfer of workpieces and repeated clamping and positioning during mass production. This non-continuous operation mode forces companies to configure independent inner diameter processing machines and outer diameter processing machines, resulting in redundant investment in equipment resources. In addition, traditional machine tools are limited by mechanical structure and control systems and generally lack three-dimensional linkage processing capabilities. When faced with high-precision processing requirements such as complex slots or spatial surfaces, they cannot be processed. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a special machine tool for slot milling to solve the problem that most current slot milling machines in the existing technology fail to realize the station integration of the milling process of the inner and outer walls of the circular tube in their design in the processing flow, resulting in frequent transfer of workpieces and repeated clamping and positioning during mass production. This non-continuous operation mode forces enterprises to configure independent inner diameter processing machines and outer diameter processing machines, resulting in redundant investment in equipment resources. In addition, traditional machine tools are limited by mechanical structure and control system, and generally lack three-dimensional linkage processing capabilities. When faced with high-precision processing requirements such as complex slots or spatial surfaces, it leads to the inability to perform processing.

[0005] A special machine tool for slot milling comprises a base plate, a frame connected to the top by bolts, a cylinder horizontally arranged on the left top of the frame, an outer diameter fixing unit surrounding the outer side of the cylinder, and contacting the outer wall of the circular tube through multi-point synchronous clamping to achieve precise positioning and clamping of the outer diameter of the workpiece, an inner diameter inner support unit integrated inside the cylinder, and contacting the inner wall of the circular tube through an adjustable inner support structure to achieve rigid support and positioning of the inner diameter of the workpiece, a moving unit arranged on the inner wall of the cylinder for driving the inner diameter inner support unit to contract in a non-machining state to avoid conflict with the circular tube processing process, a rotating unit arranged on the outside of the cylinder, and driving the circular tube to rotate by cooperating with the outer diameter fixing unit or the inner diameter inner support unit, an adjusting unit arranged on the right top of the frame, an electric guide rail 1 and an electric guide rail 2 are sequentially arranged on the top of the adjusting unit, and the milling cutter is moved in three dimensions by cooperating with the electric guide rail 1 and the electric guide rail 2, an extension frame arranged on the top of the electric guide rail 2, a milling cutter is arranged on the outer side of the extension frame, and a driving unit arranged inside the extension frame for driving the milling cutter to rotate.

[0006] Preferably, the outer diameter fixing unit includes an outer notch symmetrically opened on the outside of the cylinder, the inside of the outer notch is rotatably connected to a threaded rod 1, and a drive motor 1 is fixedly installed on the opposite sides of the left end of the cylinder, and the output end of the drive motor 1 extends to the inside of the outer notch and is fixedly connected to one end of the threaded rod 1. The outer side of the cylinder is slidably connected to a pipe clamp, and the pipe clamp is threadedly connected to the threaded rod 1 on both sides, and a number of follower blocks are equidistantly arranged on the outer circumference of the pipe clamp.

[0007] Preferably, several positioning plates are equidistantly arranged on the outside of the right end of the cylinder, and a rack is welded on the right side of the follower block, and the rack extends to the right side of the positioning plate through the notch opened in the positioning plate, and the top of the rack is meshed with gear one, and both sides of the gear one are fixedly connected to gear two through connecting rods, and the outer side of the gear two is meshed with a gear frame, and a slide groove is opened on the right side of the positioning plate, and a slide bar is slidably connected to the inside of the slide groove, and the slide bar is fixedly connected to the gear frame, and a contact plate one is welded on the bottom of the gear frame.

[0008] Preferably, the movable unit includes an inner notch symmetrically opened on the inner wall of the cylinder, the inner part of the inner notch is rotatably connected to a threaded rod 2, the outer side of the left end of the threaded rod 2 is fixedly connected to a transmission wheel 1, the two groups of the transmission wheel 1 are connected by a belt 1, and the left end of the cylinder is also fixedly installed with a drive motor 3, the output end of the drive motor 3 extends to the inside of the inner notch on one side, and is fixedly connected to one end of a group of threaded rods 2, and the outer surfaces of the two groups of threaded rods 2 are also threadedly connected to a movable plate.

[0009] Preferably, the inner diameter support unit includes an L-shaped mounting plate 1 fixedly connected to the left side of the movable plate, a driving motor 2 is fixedly mounted on the outer side of the L-shaped mounting plate 1, the output end of the driving motor 2 extends to the inner side of the L-shaped mounting plate 1 and is fixedly connected to a gear 3, the outer side of the gear 3 is meshedly connected to a gear 4, the right side of the gear 4 is fixedly connected to a transmission column, the transmission column extends to the right side of the movable plate and is fixedly connected to a turntable, and the transmission column is rotatably connected to the movable plate.

[0010] Preferably, several groups of matching grooves are provided on the outer side of the turntable, and a slide rail is provided on the right side of the movable plate at a position relative to the matching groove. A rectangular plate is slidably connected inside the slide rail, and a limiting rod is fixedly connected to the outer side of one end of the rectangular plate. The limiting rod slides inside the matching groove, and a second contact plate is fixedly connected to the outer side of the other end of the rectangular plate.

[0011] Preferably, the rotating unit includes a supporting plate welded to the top of the frame, an annular groove is opened on the right side of the supporting plate, a plurality of sliding rods are slidably connected inside the annular groove, the right side of the sliding rod is fixedly connected to the cylinder, the outer side of the left end of the cylinder is fixedly connected to a ring gear, a stepper motor 1 is fixedly installed on the outer side of the frame, the output end of the stepper motor 1 is fixedly connected to a gear 5, and the gear 5 is meshingly connected to the ring gear.

[0012] Preferably, the adjustment unit includes two groups of connecting frames welded to the top right side of the frame body, the internal sliding connection of the connecting frame is provided with a tooth plate, the inner side of the tooth plate is meshingly connected with gear six, the front side of the gear six is ​​fixedly connected with transmission wheel two through a transmission rod, the two groups of transmission wheels two are connected by belt two, and the transmission rod is rotatably connected to the outside of the connecting frame through a support frame.

[0013] Preferably, an L-shaped mounting plate 2 is welded to the front side of the connecting frame on the left, a stepper motor 2 is fixedly mounted on the outer side of the L-shaped mounting plate 2, the output end of the stepper motor 2 extends to the inner side of the L-shaped mounting plate 2 and is fixedly connected to a group of transmission wheels 2, an electric guide rail 1 is fixedly mounted on the top of the two groups of connecting frames, an electric guide rail 2 is arranged inside the electric guide rail 1, and an extension frame is arranged inside the electric guide rail 2.

[0014] Preferably, the driving unit includes a driving motor four fixedly mounted on the outside of the right end of the extension frame, the output end of the driving motor four extends to the interior of the extension frame and is fixedly connected to a driving wheel, the driving wheel is connected to a driven wheel through a belt three transmission, the front side of the driven wheel is fixedly connected to a rotating rod, the rotating rod extends to the front side of the extension frame, and is fixedly connected to the milling cutter through a flange.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the integration of workstations for the milling groove process of the inner and outer walls of circular tubes by integrating the outer diameter fixing unit and the inner diameter supporting unit, thereby avoiding frequent transfer of workpieces and repeated clamping and positioning, improving processing efficiency and reducing redundant equipment investment. At the same time, the synergistic effect of the adjustment unit and the electric guide rail gives the milling cutter three-dimensional linkage processing capabilities, meeting the high-precision processing requirements of complex grooves or spatial surfaces. The precise positioning and clamping mechanism of the outer diameter fixing unit and the inner diameter supporting unit ensures processing stability and accuracy. The rotating unit drives the circular tube to rotate flexibly, and combined with the three-dimensional movement capability of the milling cutter, the adaptability and versatility of the machine tool to circular tubes of different shapes and sizes are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the special slot milling machine tool of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the outer diameter fixing unit of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the remaining outer diameter fixing unit of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the mobile unit of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged three-dimensional structure at center A; Figure 6 This is a schematic diagram of the three-dimensional structure of the residual inner diameter inner support unit of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating unit of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the regulating unit of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the local three-dimensional structure at point B in the middle; Figure 10 It is a schematic diagram of the three-dimensional structure of the driving unit of the present invention.

[0017] In the picture: 1. Base plate; 2. Frame; 3. Cylinder; 4. Outer diameter fixing unit; 401. Outer notch; 402. Threaded rod 1; 403. Drive motor 1; 404. Pipe clamp; 405. Follower block; 406. Rack; 407. Positioning plate; 408. Gear 1; 409. Connecting rod; 410. Gear 2; 411. Gear frame; 412. Slide groove; 413. Slide bar; 414. Contact plate 1; 5. Inner diameter support unit; 501. L-shaped mounting plate 1; 502. Drive motor 2; 503. Gear 3; 504. Gear 4; 505. Transmission column; 506. Turntable; 507. Matching groove; 508. Slide rail; 509. Rectangular plate; 510. Limit rod; 511. Contact plate 2; 6. Mobile unit; 601. Inner notch; 602. Threaded rod 2; 603. Drive wheel 1; 604. Belt 1; 605. Drive motor 3; 606. Mobile plate; 7. Rotating unit; 701. Carrying plate; 702. Ring groove; 703. Sliding rod; 704. Ring gear; 705. Stepper motor 1; 706. Gear 5; 8. Adjustment unit; 801. Connecting frame; 802. Tooth plate; 803. Gear six; 804. Transmission rod; 805. Transmission wheel two; 806. Support frame; 807. Belt two; 808. L-shaped mounting plate two; 809. Stepper motor two; 9. Electric guide rail 1; 10. Electric guide rail 2; 11. Extension frame; 12. Milling cutter; 13. Driving unit; 1301. Driving motor four; 1302. Driving pulley; 1303. Belt three; 1304. Driven pulley; 1305. Rotating rod. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] Example 1: As attached Figure 1 To the attached Figure 10As shown, the present invention provides a special machine tool for slot milling, including a base plate 1, a frame 2 fixedly connected to the top by bolts, a cylinder 3, horizontally arranged on the left top of the frame 2, an outer diameter fixing unit 4, arranged around the outside of the cylinder 3, and contacting the outer wall of the circular tube through multi-point synchronous clamping to achieve precise positioning and clamping of the outer diameter of the workpiece, an inner diameter inner support unit 5, integrated inside the cylinder 3, and contacting the inner wall of the circular tube through an adjustable inner support structure to achieve rigid support and positioning of the inner diameter of the workpiece, and a moving unit 6, arranged on the inner wall of the cylinder 3, for driving the inner diameter inner support unit 5 to contract when not in the processing state to avoid contact with the circular tube The pipe processing process conflicts, the rotating unit 7 is arranged on the outside of the cylinder 3, and drives the round pipe to rotate by cooperating with the outer diameter fixing unit 4 or the inner diameter supporting unit 5. The adjusting unit 8 is arranged on the top right side of the frame 2, and the top of the adjusting unit 8 is sequentially provided with an electric guide rail 1 9 and an electric guide rail 2 10, which make the milling cutter 12 move in three dimensions by cooperating with the electric guide rail 1 9 and the electric guide rail 2 10. The extension frame 11 is arranged on the top of the electric guide rail 2 10, and the milling cutter 12 is arranged on the outside of the extension frame 11. The driving unit 13 is arranged inside the extension frame 11, and is used to drive the milling cutter 12 to rotate.

[0020] As can be seen from the above, first, the round tube to be processed is accurately suspended and positioned at the right end opening of the cylinder 3 to ensure that the workpiece is aligned with the axis of the machine tool. Then, the outer diameter fixing unit 4 is started, and a rigid contact is formed with the outer wall of the round tube through its multi-point synchronous clamping mechanism to achieve accurate positioning and stable clamping of the outer diameter of the workpiece. Under the drive of the driving unit 13, the milling cutter 12 enters a high-speed rotation state. At this time, the electric guide rail 1 9 and the electric guide rail 2 10 are linked by the adjustment unit 8 to accurately control the extension frame 11 to be inserted into the interior of the round tube along the three-dimensional space trajectory. According to the preset milling groove parameters, the milling cutter 12 performs high-precision milling on the inner wall of the round tube. After the inner wall processing is completed, the extension frame 11 is withdrawn. After the round tube is produced, the moving unit 6 drives the inner diameter support unit 5 to move axially along the cylinder 3 to the inside of the round tube, and forms a rigid support with the inner wall of the round tube through its adjustable inner support structure to complete the positioning and fixation of the inner diameter of the workpiece. At this time, the outer diameter fixing unit 4 is released from the clamping state, and the milling cutter 12 again performs milling processing on the outer wall of the round tube along the preset trajectory through the coordinated action of the adjusting unit 8 and the guide rail system. If high-precision processing of complex grooves or spatial surfaces is required during the processing, the rotating unit 7 drives the cylinder 3 and the round tube workpiece to perform indexing rotation or continuous rotation through mechanical coupling with the outer diameter fixing unit 4 or the inner diameter support unit 5, thereby meeting multi-dimensional processing requirements.

[0021] Example 2: As attached Figure 2 To the attached Figure 3As shown, this embodiment is basically the same as the previous embodiment, except that the outer diameter fixing unit 4 includes an outer notch 401 symmetrically opened on the outside of the cylinder 3, and the interior of the outer notch 401 is rotatably connected to a threaded rod 402, and a drive motor 403 is fixedly installed on the opposite sides of the left end of the cylinder 3, and the output end of the drive motor 403 extends to the interior of the outer notch 401 and is fixedly connected to one end of the threaded rod 402, and the outer side of the cylinder 3 is slidably connected to a pipe hoop 404, and the pipe hoop 404 is threadedly connected to the threaded rod 402 on both sides, and a plurality of follower blocks 405 are equidistantly arranged on the outer circumference of the pipe hoop 404, and the outer right end of the cylinder 3 is fixedly connected to the outer circumference of the cylinder 3. Several positioning plates 407 are equidistantly arranged on the side, and a rack 406 is welded to the right side of the following block 405. The rack 406 extends to the right side of the positioning plate 407 through the notch opened in the positioning plate 407. The top of the rack 406 is meshed with a gear 1 408, and both sides of the gear 1 408 are fixedly connected with a gear 2 410 through a connecting rod 409. The outer side of the gear 2 410 is meshed with a gear frame 411. A slide groove 412 is opened on the right side of the positioning plate 407, and a slide bar 413 is slidably connected to the inside of the slide groove 412. The slide bar 413 is fixedly connected to the gear frame 411, and a contact plate 1 414 is welded to the bottom of the gear frame 411.

[0022] As can be seen from the above, when the round tube workpiece is suspended and positioned at the right end of the cylinder 3, the driving motor 403 is started to drive the threaded rod 402 to rotate. The rotation of the threaded rod 402 drives the pipe clamp 404 to move axially along the outer notch 401, and the follower block 405 on the outside of the pipe clamp 404 moves accordingly. The movement of the follower block 405 drives the gear 1 408 to rotate through the rack 406. The gear 1 408 drives the gear 2 410 to rotate synchronously through the connecting rod 409. The rotation of the gear 2 410 drives the gear frame 411 to move radially along the slide groove 412 until the contact plate 1 414 at the bottom of the gear frame 411 is in synchronous contact with multiple points on the outer wall of the round tube, thereby achieving clamping and fixation of the outer side of the round tube.

[0023] Example 3: As attached Figure 4 To the attached Figure 6As shown, this embodiment is basically the same as the previous embodiment, except that the moving unit 6 includes an inner notch 601 symmetrically opened on the inner wall of the cylinder 3, and the inner rotatable connection of the inner notch 601 is connected to the threaded rod 2 602, and the outer side of the left end of the threaded rod 2 602 is fixedly connected to the transmission wheel 1 603, and the two groups of the transmission wheel 1 603 are connected by the belt 1 604. The left end of the cylinder 3 is also fixedly installed with a driving motor 3 605, and the output end of the driving motor 3 605 extends to the inside of the inner notch 601 on one side and is fixedly connected to one end of a group of threaded rod 2 602. The outer surfaces of the two groups of threaded rod 2 602 are also threadedly connected to a moving plate 606, and the inner diameter inner support unit 5 includes an L-shaped mounting plate 1 501 fixedly connected to the left side of the moving plate 606, and the outer side of the L-shaped mounting plate 1 501 is fixedly installed with a driving motor 2 502. The output end of the driving motor 2 502 extends to the inner side of the L-shaped mounting plate 1 501 and is fixedly connected to the gear 3 503. The outer side of the gear 3 503 is meshedly connected to the gear 4 504. The right side of the gear 4 504 is fixedly connected to the transmission column 505. The transmission column 505 extends to the right side of the movable plate 606 and is fixedly connected to the turntable 506. The transmission column 505 is rotatably connected to the movable plate 606. Several groups of matching grooves 507 are provided on the outer side of the turntable 506. A slide rail 508 is provided at the relative position of the right side of the movable plate 606 and the matching groove 507. The inside of the slide rail 508 is slidably connected to a rectangular plate 509. The outer side of one end of the rectangular plate 509 is fixedly connected to a limiting rod 510. The limiting rod 510 slides inside the matching groove 507. The outer side of the other end of the rectangular plate 509 is fixedly connected to a contact plate 2 511.

[0024] As can be seen from the above, after the inner wall of the circular tube is processed, the drive motor three 605 is started, and the two sets of threaded rods two 602 are driven to rotate synchronously through the belt one 604. The rotation of the threaded rod two 602 drives the movable plate 606 to move axially along the inner notch 601, thereby sending the inner diameter support unit 5 to the preset position inside the circular tube. The drive motor two 502 is started, and the drive gear three 503 is driven to rotate. The power is transmitted to the turntable 506 through the gear four 504 and the transmission column 505. The rotation of the turntable 506 drives the rectangular plate 509 to expand radially along the slide rail 508 through the sliding cooperation with the matching groove 507 and the limit rod 510 until the contact plate two 511 forms a rigid support with the inner wall of the circular tube.

[0025] Example 4: As attached Figure 7 To the attached Figure 10As shown, this embodiment is basically the same as the previous embodiment, except that the rotating unit 7 includes a bearing plate 701 welded to the top of the frame 2, an annular groove 702 is provided on the right side of the bearing plate 701, a plurality of slide rods 703 are slidably connected to the inside of the annular groove 702, the right side of the slide rod 703 is fixedly connected to the cylinder 3, the outer side of the left end of the cylinder 3 is fixedly connected to a gear ring 704, a stepper motor 705 is fixedly installed on the outer side of the frame 2, and the output end of the stepper motor 705 is fixedly connected to Gear five 706, the gear five 706 is meshed with the gear ring 704, the adjustment unit 8 includes two groups of connection frames 801 welded on the top right side of the frame 2, the interior of the connection frame 801 is slidably connected with a tooth plate 802, the inner side of the tooth plate 802 is meshed with a gear six 803, the front side of the gear six 803 is fixedly connected to the transmission wheel 2 805 through the transmission rod 804, the two groups of the transmission wheel 2 805 are connected by the belt 2 807, and the transmission rod 804 is connected by the support frame 806. The outer side of the connecting frame 801 is connected, and the front side of the left connecting frame 801 is welded with an L-shaped mounting plate 2 808. The outer side of the L-shaped mounting plate 2 808 is fixedly installed with a stepper motor 2 809. The output end of the stepper motor 2 809 extends to the inner side of the L-shaped mounting plate 2 808 and is fixedly connected to a set of transmission wheels 2 805. The tops of the two sets of connecting frames 801 are fixedly installed with an electric guide rail 1 9. The interior of the electric guide rail 1 9 is provided with an electric guide rail 2 10. The interior of the electric guide rail 2 10 is provided with a An extension frame 11 is provided, and the driving unit 13 includes a driving motor 4 1301 fixedly mounted on the outside of the right end of the extension frame 11. The output end of the driving motor 4 1301 extends to the interior of the extension frame 11 and is fixedly connected to a driving wheel 1302. The driving wheel 1302 is connected to a driven wheel 1304 through a belt 3 1303. The front side of the driven wheel 1304 is fixedly connected to a rotating rod 1305. The rotating rod 1305 extends to the front side of the extension frame 11 and is fixedly connected to the milling cutter 12 through a flange.

[0026] As can be seen from the above, when it is necessary to process a complex groove or spatial surface, the stepper motor 1 705 is started to drive the gear 5 706 to rotate. The rotation of the gear 5 706 is driven by the meshing transmission with the ring gear 704, driving the cylinder 3 and the round tube workpiece to perform indexing rotation or continuous rotation. While the round tube is rotating, the stepper motor 2 809 is started to drive the gear 6 803 to rotate through the transmission wheel 2 805 and the belt 2 807. The rotation of the gear 6 803 is driven by the meshing transmission with the tooth plate 802. , cooperate with the linkage of electric guide rail 1 9 and electric guide rail 2 10 to realize the three-dimensional spatial trajectory adjustment of the milling cutter 12, turn on the drive motor 4 1301, and the drive motor 4 1301 drives the active wheel 1302 to rotate, and drives the driven wheel 1304 to rotate through the belt 3 1303, and then drives the milling cutter 12 to rotate at high speed through the rotating rod 1305. According to the processing needs, the milling cutter 12 can be quickly replaced through the flange, so as to perform high-precision milling processing on round tubes, complex grooves or spatial curved surfaces.

[0027] Working principle: After the round tube to be processed is accurately suspended and positioned at the opening at the right end of the cylinder 3 and the axis is aligned, the drive motor 403 is started. The drive motor 403 drives the threaded rod 402 to rotate, drives the pipe clamp 404 to move axially and transmits through the follower block 405, rack 406, gear 1 408, gear 2 410 and gear frame 411, so that the contact plate 1 414 is multi-point rigidly clamped to the outer wall of the round tube. Then the drive motor 4 1301 drives the milling cutter 12 at high speed through the belt 3 1303. The stepper motor 2 809 drives the gear 6 803 to link the gear plate 802 with the electric guide rail 1 9 and the electric guide rail 2 10 to control the extension frame 11 to insert into the interior of the round tube along the three-dimensional trajectory for high-precision inner wall milling. After completion, the extension frame 11 withdraws and the drive motor 3 6 05 drives the threaded rod 2 602 to rotate through the belt 1 604, drives the movable plate 606 to move axially to send the inner diameter support unit 5 into the inside of the round tube, and drives the motor 2 502 to drive the turntable 506 to rotate through the gear 3 503, the gear 4 504 and the transmission column 505. The rectangular plate 509 is radially expanded through the sliding cooperation of the matching groove 507 and the limit rod 510, and the contact plate 2 511 rigidly supports the inner wall of the round tube. At this time, the outer diameter fixing unit 4 is released from the clamping, and the milling cutter 12 cooperates with the guide rail system through the adjustment unit 8 to mill the outer wall of the round tube again. If complex grooves or spatial curved surfaces need to be processed, the stepper motor 1 705 of the rotating unit 7 drives the gear 5 706 to engage with the gear ring 704, driving the cylinder 3 and the round tube to rotate or rotate continuously to meet the multi-dimensional processing requirements.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A special machine tool for slot milling, characterized in that: include: A base plate (1) is fixedly connected to a frame (2) on the top by bolts; The cylinder (3) is horizontally arranged on the top left side of the frame (2); The outer diameter fixing unit (4) is arranged around the outer side of the cylinder (3) and contacts the outer wall of the circular tube through multi-point synchronous clamping to achieve precise positioning and clamping of the outer diameter of the workpiece; An inner diameter inner support unit (5) is integrated inside the cylinder (3) and contacts the inner wall of the circular tube through an adjustable inner support structure to achieve rigid support and positioning of the inner diameter of the workpiece; A moving unit (6) is provided on the inner wall of the cylinder (3) and is used to drive the inner diameter support unit (5) to contract in a non-processing state to avoid conflict with the round tube processing process; The rotating unit (7) is arranged outside the cylinder (3) and drives the circular tube to rotate by cooperating with the outer diameter fixing unit (4) or the inner diameter supporting unit (5); An adjusting unit (8) is provided on the top right side of the frame (2), and an electric guide rail 1 (9) and an electric guide rail 2 (10) are sequentially provided on the top of the adjusting unit (8), and the milling cutter (12) is moved three-dimensionally by cooperating with the electric guide rail 1 (9) and the electric guide rail 2 (10); An extension frame (11) is arranged on the top of the second electric guide rail (10), and a milling cutter (12) is arranged on the outer side of the extension frame (11); The driving unit (13) is arranged inside the extension frame (11) and is used to drive the milling cutter (12) to rotate.

2. A slot milling machine tool according to claim 1, characterized in that: The outer diameter fixing unit (4) includes an outer notch (401) symmetrically opened on the outer side of the cylinder (3), the interior of the outer notch (401) is rotatably connected to a threaded rod (402), and a driving motor (403) is fixedly installed on opposite sides of the left end of the cylinder (3), the output end of the driving motor (403) extends to the interior of the outer notch (401) and is fixedly connected to one end of the threaded rod (402), and the outer side of the cylinder (3) is slidably connected to a pipe hoop (404), the pipe hoop (404) is threadedly connected to the threaded rod (402) on both sides, and a plurality of follower blocks (405) are equidistantly arranged on the outer circumference of the pipe hoop (404).

3. A slot milling machine tool according to claim 2, characterized in that: A plurality of positioning plates (407) are equidistantly arranged on the outer side of the right end of the cylinder (3), and a rack (406) is welded on the right side of the follower block (405), and the rack (406) extends to the right side of the positioning plate (407) through the notch provided in the positioning plate (407), and the top of the rack (406) is meshedly connected with a gear 1 (408), and both sides of the gear 1 (408) are fixedly connected with a gear 2 (410) through a connecting rod (409), and the outer side of the gear 2 (410) is meshedly connected with a gear frame (411), and a slide groove (412) is provided on the right side of the positioning plate (407), and a slide bar (413) is slidably connected inside the slide groove (412), and the slide bar (413) is fixedly connected to the gear frame (411), and a contact plate 1 (414) is welded to the bottom of the gear frame (411).

4. A slot milling machine tool according to claim 1, characterized in that: The movable unit (6) comprises an inner notch (601) symmetrically opened on the inner wall of the cylinder (3), the inner notch (601) is rotatably connected to the second threaded rod (602), the outer side of the left end of each of the second threaded rods (602) is fixedly connected to the first transmission wheel (603), the two groups of the first transmission wheels (603) are connected by a belt (604), and the left end of the cylinder (3) is also fixedly installed with a third drive motor (605), the output end of the third drive motor (605) extends to the inside of the inner notch (601) on one side and is fixedly connected to one end of a group of the second threaded rods (602), and the outer surfaces of the two groups of the second threaded rods (602) are also threadedly connected to a movable plate (606).

5. The slot milling machine tool according to claim 1, characterized in that: The inner diameter inner support unit (5) includes an L-shaped mounting plate 1 (501) fixedly connected to the left side of the movable plate (606), a driving motor 2 (502) fixedly installed on the outer side of the L-shaped mounting plate 1 (501), an output end of the driving motor 2 (502) extending to the inner side of the L-shaped mounting plate 1 (501) and fixedly connected to a gear 3 (503), an outer side of the gear 3 (503) meshingly connected to a gear 4 (504), a transmission column (505) fixedly connected to the right side of the gear 4 (504), the transmission column (505) extending to the right side of the movable plate (606) and fixedly connected to a turntable (506), and the transmission column (505) is rotatably connected to the movable plate (606).

6. A slot milling machine tool according to claim 5, characterized in that: A plurality of matching grooves (507) are provided on the outer side of the turntable (506), and a slide rail (508) is provided on the right side of the movable plate (606) at a position relative to the matching groove (507). A rectangular plate (509) is slidably connected to the interior of the slide rail (508), and a limiting rod (510) is fixedly connected to the outer side of one end of the rectangular plate (509). The limiting rod (510) slides inside the matching groove (507), and a second contact plate (511) is fixedly connected to the outer side of the other end of the rectangular plate (509).

7. The slot milling machine tool according to claim 1, characterized in that: The rotating unit (7) includes a supporting plate (701) welded to the top of the frame (2), an annular groove (702) is provided on the right side of the supporting plate (701), a plurality of sliding rods (703) are slidably connected inside the annular groove (702), the right side of the sliding rods (703) is fixedly connected to the cylinder (3), the outer side of the left end of the cylinder (3) is fixedly connected to a gear ring (704), the outer side of the frame (2) is fixedly installed with a stepper motor 1 (705), the output end of the stepper motor 1 (705) is fixedly connected to a gear 5 (706), and the gear 5 (706) is meshed with the gear ring (704).

8. The slot milling machine tool according to claim 1, characterized in that: The adjustment unit (8) comprises two groups of connection frames (801) welded to the top right side of the frame (2), the connection frames (801) are slidably connected to a toothed plate (802) inside, the inner side of the toothed plate (802) is meshedly connected to a gear six (803), the front side of the gear six (803) is fixedly connected to a transmission wheel two (805) via a transmission rod (804), the two groups of transmission wheels two (805) are connected by a transmission belt two (807), and the transmission rod (804) is rotatably connected to the outer side of the connection frame (801) via a support frame (806).

9. The slot milling machine tool according to claim 8, characterized in that: An L-shaped mounting plate 2 (808) is welded to the front side of the left connecting frame (801), and a stepper motor 2 (809) is fixedly mounted on the outer side of the L-shaped mounting plate 2 (808). The output end of the stepper motor 2 (809) extends to the inner side of the L-shaped mounting plate 2 (808) and is fixedly connected to a set of transmission wheels 2 (805). An electric guide rail 1 (9) is fixedly mounted on the top of the two sets of connecting frames (801), and an electric guide rail 2 (10) is arranged inside the electric guide rail 1 (9), and an extension frame (11) is arranged inside the electric guide rail 2 (10).

10. The slot milling machine tool according to claim 1, characterized in that: The driving unit (13) includes a driving motor four (1301) fixedly mounted on the outside of the right end of the extension frame (11), the output end of the driving motor four (1301) extends to the interior of the extension frame (11) and is fixedly connected to a driving wheel (1302), the driving wheel (1302) is connected to a driven wheel (1304) via a belt three (1303), the front side of the driven wheel (1304) is fixedly connected to a rotating rod (1305), the rotating rod (1305) extends to the front side of the extension frame (11) and is fixedly connected to the milling cutter (12) via a flange.

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