A surface milling device for a missile launcher

Abstract

The application relates to the technical field of milling devices, in particular to a missile launching tube surface milling device, which comprises a base and a launching tube, a working platform is fixedly installed at the top end of the base, a portal frame is arranged above the working platform, a main shaft box is installed at the moving end of the portal frame, a milling head is installed at the working end of the main shaft box, a reciprocating moving mechanism is arranged at the top end of the base along the front-rear direction, a first arc-shaped block is installed at the moving end of the reciprocating moving mechanism, a plurality of second arc-shaped blocks are fixedly installed at the top end surface of the working platform at equal intervals, the second arc-shaped blocks are detachably connected with the first arc-shaped block, and external supporting mechanisms are arranged at the inner sides of the two arc-shaped blocks. Through the comprehensive design of the internal and external supporting, adjustable clamping and multi-rotation structure, the stable machining of the launching tube from the transfer, positioning to the whole milling process is realized, the machining demand of the launching tube of different specifications can be met, and the clamping efficiency, machining precision and safety are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of milling equipment technology, and in particular to a milling device for the surface of a missile launch tube. Background Technology

[0002] Existing clamping methods for milling cylindrical workpieces such as launch tubes mostly employ single-sided clamping, point support, or simple clamp structures. The clamping position is fixed and has poor adjustability, which can easily lead to uneven force distribution during clamping. This is especially true when the workpiece is long or thin, where local stress concentration is more pronounced. This not only affects the stability of the workpiece during movement and positioning but also easily causes minor deformations before machining, thereby reducing the accuracy of subsequent milling.

[0003] Furthermore, existing technologies have limited support methods for the internal structure of the launch tube. They typically rely on external clamping or a small amount of end support to resist cutting loads. When performing surface milling, the workpiece lacks effective internal support and is prone to vibration, concavity, or elastic deformation under the action of cutting force. This has a significant impact on thin-walled launch tubes, making it difficult to guarantee key dimensions such as roundness and coaxiality. In severe cases, it can even cause the workpiece to be scrapped, thus restricting the improvement of processing quality. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems existing in the prior art, and to propose a missile launch tube surface milling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a missile launch tube surface milling device, comprising a base and a launch tube, a working platform fixedly installed at the top of the base, a gantry frame provided above the working platform, a spindle box installed at the moving end of the gantry frame, a milling head installed at the working end of the spindle box, a reciprocating moving mechanism provided at the top of the base along the front-back direction, a first arc-shaped block installed at the moving end of the reciprocating moving mechanism, and a plurality of second arc-shaped blocks fixedly installed at equal intervals on the top surface of the working platform, the second arc-shaped blocks being detachably connected to the first arc-shaped blocks, and both having an external support mechanism on their inner sides;

[0006] A mounting plate is installed on the rear side of the top of the base. A first rotating rod is rotatably connected to the front end of the mounting plate. The first rotating rod is located in the clamping space formed by the first arc block and the second arc block. Several sets of internal support mechanisms are arranged on the first rotating rod along its length. Second rotating rollers are provided on both sides below the first rotating rod. Both second rotating rollers are located inside the second arc block. Lifting devices are provided at the beginning and end of the second rotating rollers.

[0007] The base has an outwardly extendable lifting platform inside, and the working platform has an outwardly extendable T-shaped frame inside. The T-shaped frame has a first mounting block and a second mounting block that are symmetrically distributed inside. The first mounting block and the second mounting block each have several first placement slots and second placement slots arranged alternately inside. The first placement slot has a driving mechanism inside, and the second placement slot has an auxiliary support mechanism inside.

[0008] Preferably, the reciprocating moving mechanism includes two mounting columns symmetrically installed on the front side of the top of the base. A ball screw is provided between the mounting plate and the two mounting columns. The two sets of ball screws are arranged in parallel and run synchronously. The moving ends of the two sets of ball screws are connected to the first arc-shaped block through a moving block.

[0009] Preferably, the external support mechanism includes a plurality of seventh electric telescopic rods installed at equal angles on the inner wall of the first arc-shaped block or the second arc-shaped block. The telescopic end of the seventh electric telescopic rod is fixedly connected to a rubber frame, and a rubber roller is rotatably installed inside the rubber frame. The rubber roller makes rolling contact with the outer wall of the launching tube.

[0010] Preferably, the internal support mechanism includes a plurality of sixth electric telescopic rods fixedly installed in a ring array on the outer wall of the first rotating rod, and the telescopic end of the sixth electric telescopic rod is fixedly connected to a clamping block, and the surface of the clamping block is glued with a rubber pad.

[0011] Preferably, the first rotating rod is made of magnetic material, and a third electromagnet is movably sleeved on its front end. A second mounting ring is fixedly connected to the outside of the third electromagnet. An internal support mechanism is provided on the outside of the second mounting ring. Elastic cloth is sleeved on the ends of the second mounting ring and the first rotating rod. A silicone strip is connected to the periphery of the elastic cloth. The silicone strip is bonded to several corresponding rubber pads.

[0012] Preferably, a plurality of first rotating rollers are arranged along the length of the top of the working platform, the first rotating rollers and the second arc-shaped blocks are staggered, and a fifth electric telescopic rod is installed at both the left and right ends of the first rotating rollers, the fifth electric telescopic rod being used to adjust the height of the first rotating rollers.

[0013] Preferably, the driving mechanism includes a third rotating roller, one end of which is equipped with a first electric telescopic rod and the other end with a second electric telescopic rod. A first mounting ring is movably sleeved on the outer side of the first electric telescopic rod. A second electromagnet is fixedly installed on the side of the first mounting ring that contacts the first electric telescopic rod. A connecting rod is fixedly connected to one side of the first mounting ring. The connecting rod is rotatably connected to the inner sidewall of the first placement groove. The first electromagnet is movably sleeved on the outer side of the connecting rod. The connecting rod is made of magnetic material.

[0014] Preferably, a vacuum suction cup is provided on one side of the second electric telescopic rod and installed on the inner side wall of the first placement groove. The vacuum suction cup is used to adsorb and fix the second electric telescopic rod. A fixing plate is provided on one side of the vacuum suction cup and fixedly installed on the inner side wall of the first placement groove. A clamping device is installed inside the fixing plate and is used to clamp and fix the second electric telescopic rod.

[0015] Preferably, the auxiliary support mechanism includes a stop bar disposed inside the second placement slot, a fourth electric telescopic rod installed at the lower end of the stop bar, a second rotating rod provided on the side of the first mounting block and the side of the second mounting block that is away from each other, a motor for driving the rotation of the second rotating rod is provided at one end of the second rotating rod, a reducer is connected between the output end of the motor and the second rotating rod, and the end of the fourth electric telescopic rod away from the stop bar is fixedly connected to the second rotating rod.

[0016] Preferably, a plurality of ball bearings are rotatably mounted on the top of the stop bar, and the ball bearings are in rolling contact with the outer surface of the launch tube.

[0017] Compared with existing technologies, the advantages of this invention are:

[0018] 1. This application achieves ring clamping and fixing of the outside of the launch tube by cooperating with the first arc block, the second arc block and the seventh electric telescopic rod. The clamping position can be flexibly adjusted, the force is uniform and reliable, and the local deformation problem caused by traditional point or single-sided clamping is effectively avoided. At the same time, it maintains stability throughout the movement, positioning and milling process of the launch tube, providing reliable basic support conditions for subsequent high-precision machining.

[0019] 2. This application, through the coordinated operation of the third rotating roller, the first rotating roller, and the second rotating roller, combined with the height and position adjustment of multiple sets of electric telescopic rods, ensures that the launching tube is always under control during the transfer and positioning process. This enables precise alignment between the launching tube and the spindle center, and also allows for smooth rotation during processing, significantly reducing the difficulty of manual adjustment and improving the overall clamping and reversing efficiency.

[0020] 3. This application forms a multi-point internal support structure by setting multiple sixth electric telescopic rods inside the launch tube. It can be synchronously adjusted according to the length and diameter of the launch tube, effectively offsetting the concavity or vibration caused by cutting load during the milling process, avoiding deformation of thin-walled structures due to insufficient rigidity, and structurally ensuring the roundness, coaxiality and processing quality of the launch tube.

[0021] 4. By setting up a stop bar and ball bearing structure, this application can significantly reduce contact friction while limiting and protecting the launch tube, making the launch tube smoother and more stable during transfer and feeding, and reducing the risk of surface scratches; at the same time, with the shielding design of elastic cloth, silicone strip and rubber pad, it can effectively prevent milling debris from entering the interior of the launch tube and ensure its internal cleanliness.

[0022] In summary, this invention, through the integrated design of internal and external supports, adjustable clamping, and multi-rotation structure, achieves stable machining of the launch tube from transportation and positioning to milling, and can adapt to the machining needs of launch tubes of different specifications, significantly improving clamping efficiency, machining accuracy, and safety. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a missile launch tube surface milling device proposed in this invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of a missile launch tube surface milling device proposed in this invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the overall structure of a missile launch tube surface milling device proposed in this invention. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the structure of the first mounting block of a missile launch tube surface milling device proposed in this invention;

[0027] Figure 5 This is a top view of the first mounting block of a missile launch tube surface milling device proposed in this invention;

[0028] Figure 6 This is a full cross-sectional schematic diagram of the first mounting ring of a missile launch tube surface milling device proposed in this invention;

[0029] Figure 7 This is a schematic diagram of the structure of the stop bar of the missile launch tube surface milling device proposed in this invention;

[0030] Figure 8 This is a schematic diagram of the structure of the first rotating rod of a missile launch tube surface milling device proposed in this invention;

[0031] Figure 9 This is a side view of the first rotating rod of a missile launch tube surface milling device proposed in this invention;

[0032] Figure 10 This is a schematic diagram of the structure of the second mounting ring of a missile launch tube surface milling device proposed in this invention;

[0033] Figure 11 This is a split view of the first arc-shaped block of a missile launch tube surface milling device proposed in this invention.

[0034] In the diagram: 1. Base, 2. Working platform, 3. Gantry frame, 4. Lifting platform, 5. Spindle box, 6. Launch tube, 7. Ball screw, 8. First rotating roller, 9. Second rotating roller, 10. First rotating rod, 11. First arc block, 12. Second arc block, 13. Mounting plate, 14. First mounting block, 15. Second mounting block, 16. Third rotating roller, 17. First electric telescopic rod, 18. First mounting ring, 19. Second electric telescopic rod, 20. Vacuum suction cup, 21. Fixing plate, 22. Clamping device, 23. Motor, 24. Second rotating rod, 25. Fourth electric telescopic rod, 26. First electromagnet, 27. Connecting rod, 28. Second electromagnet, 29. Stop bar, 30. Ball, 31. Fifth electric telescopic rod, 32. Moving block, 33. Second mounting ring, 34. Sixth electric telescopic rod, 35. Seventh electric telescopic rod, 36. Clamping block, 37. Third electromagnet, 38. Rubber pad, 39. Silicone strip, 40. Elastic cloth, 41. Rubber frame, 42. Rubber roller. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Reference Figures 1 to 11 A missile launch tube surface milling device includes a base 1, a working platform 2 fixedly mounted on the top of the base 1, two symmetrically arranged mounting columns mounted on the front side of the top of the base 1, and a mounting plate 13 mounted on the rear side of the top. Ball screws 7 are provided between the mounting plate 13 and the two mounting columns. The two sets of ball screws 7 are arranged in parallel and run synchronously. The moving ends of the two sets of ball screws 7 are connected to a first arc-shaped block 11 via a moving block 32. Another first arc-shaped block 11 is provided between the first arc-shaped block 11 and the mounting plate 13. The two first arc-shaped blocks 11 are respectively used for milling the surface of the launch tube 6. The front and rear ends are clamped. Several second arc-shaped blocks 12 are fixedly installed at equal intervals on the top surface of the working platform 2. The second arc-shaped blocks 12 and the first arc-shaped blocks 11 are detachably connected. The two are matched in shape and together form a complete ring structure. Several seventh electric telescopic rods 35 are installed at equal angles on the inner walls of the first arc-shaped blocks 11 and the second arc-shaped blocks 12. The telescopic ends of the seventh electric telescopic rods 35 are fixedly connected to rubber frames 41. Rubber rollers 42 are rotatably installed inside the rubber frames 41. The rubber rollers 42 roll in contact with the outer wall of the launching tube 6 to assist in the stable rotation of the launching tube 6.

[0037] The front end of the mounting plate 13 is rotatably connected to a first rotating rod 10. The first rotating rod 10 is located within the clamping space formed by the first arc-shaped block 11 and the second arc-shaped block 12, and is made of magnetic material. Several sets of internal support mechanisms are arranged along the length of the first rotating rod 10. The support mechanism includes several sixth electric telescopic rods 34 fixedly installed in a ring array on the outer wall of the first rotating rod 10. The telescopic end of the sixth electric telescopic rod 34 is fixedly connected to a clamping block 36. A rubber pad 38 is glued to the surface of the clamping block 36. Through the cooperation of the sixth electric telescopic rod 34, the clamping block 36 and the rubber pad 38, the launch tube 6 is clamped and fixed from the inside. A third electromagnet 37 is movably sleeved at the front end of the first rotating rod 10. A second mounting ring 33 is fixedly connected to the outside of the third electromagnet 37. An internal support mechanism is provided on the outside of the second mounting ring 33. An elastic cloth 40 is sleeved on the end of both the second mounting ring 33 and the first rotating rod 10. A silicone strip 39 is connected to the periphery of the elastic cloth 40. The silicone strip 39 is bonded to several corresponding rubber pads 38, so that when the sixth electric telescopic rod 34 extends, the elastic cloth 40 can be expanded inside the launch tube 6 through the cooperation of the rubber pads 38 and the silicone strip 39. This can seal the front and rear ends of the launch tube 6, preventing milling debris from splashing into the launch tube 6 and keeping its interior clean.

[0038] Two parallel second rotating rollers 9 are provided on both sides below the first rotating rod 10. Both second rotating rollers 9 are located inside the second arc-shaped block 12. Lifting devices are provided at the beginning and end of each second rotating roller 9. These lifting devices are existing technology, and their specific structural design will not be detailed here. They are used to control the lifting of the second rotating rollers 9, allowing them to contact the lower side wall of the launch tube 6. The second rotating rollers 9 themselves are powered and can drive the launch tube 6 to move. Several first rotating rollers 8 are arranged along the length of the top of the working platform 2. The first rotating rollers 8 are staggered with the second arc-shaped block 12. Fifth electric telescopic rods 31 are installed at both ends of each first rotating roller 8. The fifth electric telescopic rods 31 are used to adjust the height of the first rotating roller 8, and the first rotating roller 8 itself is powered to drive the launch tube 6 to move.

[0039] The base 1 has an outwardly extendable lifting platform 4 inside, and the work platform 2 has an outwardly extendable T-shaped frame inside. A first mounting block 14 is fixedly connected to one side of the T-shaped frame, and a second mounting block 15 is fixedly connected to the other side. The first mounting block 14 and the second mounting block 15 are symmetrically distributed about the T-shaped frame, and both have several first placement slots and second placement slots arranged alternately inside. A drive mechanism is provided inside the first placement slot. The drive mechanism includes a third rotating roller 16. The third rotating roller 16 is powered and has a first electric telescopic rod 17 installed at one end and a second electric telescopic rod 17 installed at the other end. 9. A first mounting ring 18 is movably sleeved on the outer side of the first electric telescopic rod 17. A second electromagnet 28 is fixedly installed on the side of the first mounting ring 18 that contacts the first electric telescopic rod 17. The second electromagnet 28 is used to attract and fix the first electric telescopic rod 17 after being energized. A connecting rod 27 is fixedly connected to one side of the first mounting ring 18. The connecting rod 27 is rotatably connected to the inner side wall of the first placement groove. A first electromagnet 26 is movably sleeved on the outer side of the connecting rod 27. The first electromagnet 26 attracts and fixes the connecting rod 27 after being energized, thereby limiting and fixing the position of the first electric telescopic rod 17. A vacuum suction cup 20 is provided on one side of the second electric telescopic rod 19 and installed on the inner side wall of the first placement groove. The vacuum suction cup 20 is used to attract and fix the second electric telescopic rod 19. A fixing plate 21 is fixedly installed on the inner side wall of the first placement groove on one side of the vacuum suction cup 20. A clamping device 22 is installed inside the fixing plate 21. The clamping device 22 is existing technology, and its specific structural design will not be described in detail here. The clamping device 22 is used to clamp and fix the second electric telescopic rod 19.

[0040] The second placement slot is equipped with a stop bar 29. Several balls 30 are rotatably mounted on the top of the stop bar 29. The balls 30 roll in contact with the outer surface of the launch tube 6. A fourth electric telescopic rod 25 is installed at the lower end of the stop bar 29. A second rotating rod 24 is provided on the side of the first mounting block 14 and the second mounting block 15 that is away from each other. A motor 23 is provided at one end of the second rotating rod 24 to drive its rotation. A reducer is connected between the output end of the motor 23 and the second rotating rod 24. The end of the fourth electric telescopic rod 25 that is away from the stop bar 29 is fixedly connected to the second rotating rod 24, so that when the motor 23 is running, it can drive the multiple fourth electric telescopic rods 25 and the stop bar 29 to rotate through the second rotating rod 24.

[0041] A gantry 3 is provided above the work platform 2. A spindle box 5 is installed at the moving end of the gantry 3. A milling head is installed at the working end of the spindle box 5. The milling head is used to mill the surface of the launch tube 6.

[0042] In this invention, before milling the launch tube 6, a first arc-shaped block 11 is placed at the end of the launch tube 6, and then the seventh electric telescopic rod 35 is extended and clamped by the rubber frame 41. Before moving the launch tube 6 to the working platform 2, the first mounting block 14 and the second mounting block 15 in the working platform 2 are pulled out first. For the third rotating roller 16 in the first mounting block 14, the vacuum suction cup 20 is disconnected from the adsorption of the second electric telescopic rod 19, and then the first electromagnet 26 and the second electromagnet 28 are disconnected. Then, the position of the third rotating roller 16 is adjusted so that the second electric telescopic rod 19 is inserted into the clamping device 22 of the fixing plate 21 on the second mounting block 15. Then, the clamping device 22, the first electromagnet 26 and the second electromagnet 28 are activated to fix the first electric telescopic rod 17 and the second electric telescopic rod 19, thereby completing the adjustment of the third rotating roller 16. Similarly, after adjusting the remaining third rotating roller 16, pull out the lifting platform 4 inside the base 1 and start the lifting platform 4 to support the first mounting block 14, the second mounting block 15 and the first electric telescopic rod 17.

[0043] After completing the preparations, the motor 23 is started to drive the second rotating rod 24 to rotate, causing the stop rod 29 to rise. The launch tube 6 is then placed on the third rotating roller 16. At this time, the stop rod 29 is located on both sides of the launch tube 6 to prevent the launch tube 6 from rolling down. The lengths of the first electric telescopic rod 17 and the second electric telescopic rod 19 on both sides of the third rotating roller 16 are then adjusted until the center of the launch tube 6 coincides with the first rotating rod 10. At this point, the second rotating rod 24 is rotated, and the length of the fourth electric telescopic rod 25 is adjusted until the stop rod 29 abuts against both sides of the launch tube 6. Then, the length of the fifth electric telescopic rod 31 is adjusted so that the first rotating roller 8 and the third rotating roller 16 are at the same height. Subsequently, the third rotating roller 16 and the first rotating roller 8 are started in sequence, causing the launch tube 6 to move slowly onto the working platform 2. During this process, the first rotating rod 10 gradually extends into the interior of the launch tube 6. The stop lever 29 is equipped with a ball bearing 30. In this way, the stop lever 29 can limit the launch tube 6 to prevent the launch tube 6 from rolling down, and the ball bearing 30 can also reduce the friction between the launch tube 6 and the stop lever 29, thus assisting the movement of the launch tube 6.

[0044] After one end of the launch tube 6 moves to the end of the first rotating rod 10, the protrusion inside the second arc-shaped block 12 on one side of the mounting plate 13 extends into the first arc-shaped block 11, forming a complete ring. Then, according to the length of the launch tube 6, another first arc-shaped block 11 is clamped onto the launch tube 6, forming a ring with the corresponding second arc-shaped block 12 below, thus clamping and fixing the two ends of the launch tube 6. Next, the position of the second mounting ring 33 is adjusted so that it is located at the end of the launch tube 6. Then, the third electromagnet 37 is activated to fix the second mounting ring 33, and then multiple sixth electric telescopic rods 34 are extended to provide multiple supports for the interior of the launch tube 6, preventing deformation of the launch tube 6 due to insufficient internal support force during surface milling. Finally, the second rotating roller 9 is moved to abut against both sides of the launch tube 6. In this way, during milling, the second rotating roller 9 can both limit the launch tube 6 and provide additional support force to ensure the stability of milling. The heights of the first rotating roller 8 and the second rotating roller 9, as well as the positions of the clamping block 36 and the rubber frame 41, can all be adjusted, thereby enabling the milling of launch tubes 6 of different lengths and diameters, greatly improving the flexibility and versatility of the device. Furthermore, before moving the launch tube 6, elastic cloth 40 can be pre-placed on the ends of the second mounting ring 33 and the first rotating rod 10, and then adhered to the rubber pad 38 using silicone strips 39. This protects both ends of the launch tube 6, preventing milling debris from splashing into the interior of the launch tube 6 and keeping its interior clean.

[0045] After the launching tube 6 is fixed, the lifting platform 4 is pushed back into the base 1. Then, the clamping device 22, the first electromagnet 26 and the second electromagnet 28 are disconnected. After the third rotating roller 16 is restored to its original position, the vacuum suction cup 20, the first electromagnet 26 and the second electromagnet 28 are activated to fix the first electric telescopic rod 17 and the second electric telescopic rod 19. Then, the first mounting block 14 and the second mounting block 15 are pushed back into the working platform 2. This will not obstruct the operator's work and will also prevent milling debris from falling into the first mounting block 14 and the second mounting block 15.

[0046] When the gantry 3 moves, causing the milling head on the spindle box 5 to mill the surface of the launch tube 6, the sixth electric telescopic rod 34 provides support for the inside of the launch tube 6, while the seventh electric telescopic rod 35 clamps and fixes the launch tube 6 on the outside to ensure its stability and make the force on the launch tube 6 uniform during milling. When it is necessary to rotate the launch tube 6 to mill other positions, the first rotating roller 8 is moved down first, and then the second rotating roller 9 is started to drive the launch tube 6 to rotate. During this process, the sixth electric telescopic rod 34 and the launch tube 6 rotate synchronously to maintain support for the inside of the launch tube 6, while the seventh electric telescopic rod 35 retracts a small distance, so that the first arc block 11 and the second arc block 12 remain stationary. A rubber roller 42 is installed inside the rubber frame 41. When the seventh electric telescopic rod 35 extends, the rubber frame 41 and the rubber roller 42 together clamp the launch tube 6. When the launch tube 6 rotates and the seventh electric telescopic rod 35 retracts a short distance, the rubber roller 42 mainly contacts the launch tube 6 to assist in the stable rotation of the launch tube 6. When it is necessary to mill the clamping parts at both ends of the launch tube 6, the protrusion inside the moving block 32 can be inserted into the first arc-shaped block 11. At the same time, the protrusion inside the second arc-shaped block 12 retracts. Then, the ball screw 7 is activated to move the first arc-shaped block 11 above the other second arc-shaped blocks 12, exposing the part of the launch tube 6 that was originally clamped. Then, the protrusion of the corresponding second arc-shaped block 12 is inserted into the first arc-shaped block 11. After the seventh electric telescopic rod 35 is activated again to clamp the outside of the launch tube 6, the milling of the clamping part of the launch tube begins.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A milling device for the surface of a missile launch tube, comprising a base (1) and a launch tube (6), wherein a working platform (2) is fixedly installed on the top of the base (1), a gantry (3) is provided above the working platform (2), a spindle box (5) is installed on the moving end of the gantry (3), and a milling head is installed on the working end of the spindle box (5), characterized in that, The top of the base (1) is provided with a reciprocating moving mechanism along the front-back direction. The moving end of the reciprocating moving mechanism is equipped with a first arc block (11). Several second arc blocks (12) are fixedly installed at equal intervals on the top surface of the work platform (2). The second arc blocks (12) and the first arc blocks (11) are detachably connected, and both are provided with an external support mechanism on their inner sides. The base (1) is equipped with a mounting plate (13) at the rear top. The front end of the mounting plate (13) is rotatably connected to a first rotating rod (10). The first rotating rod (10) is located in the clamping space formed by the first arc block (11) and the second arc block (12). Several sets of internal support mechanisms are arranged on the first rotating rod (10) along its length direction. The first rotating rod (10) is provided with second rotating rollers (9) on both sides below it. The two second rotating rollers (9) are located inside the second arc block (12). The first and last ends of the second rotating rollers (9) are provided with lifting devices. The base (1) is provided with an outwardly extendable lifting platform (4), and the working platform (2) is provided with an outwardly extendable T-shaped frame. The T-shaped frame is provided with a first mounting block (14) and a second mounting block (15) symmetrically distributed. The first mounting block (14) and the second mounting block (15) are provided with several first placement slots and second placement slots in an alternating manner. The first placement slot is provided with a driving mechanism, and the second placement slot is provided with an auxiliary support mechanism. The driving mechanism includes a third rotating roller (16). One end of the third rotating roller (16) is equipped with a first electric telescopic rod (17), and the other end is equipped with a second electric telescopic rod (19). The outer side of the first electric telescopic rod (17) is movably fitted with a first mounting ring (18), and one side of the second electric telescopic rod (19) is provided with a vacuum suction cup (20) installed on the inner wall of the first placement slot.

2. The missile launch tube surface milling device according to claim 1, characterized in that, The reciprocating moving mechanism includes two mounting columns symmetrically installed on the front side of the top of the base (1). A ball screw (7) is provided between the mounting plate (13) and the two mounting columns. The two sets of ball screws (7) are arranged in parallel and run synchronously. The moving ends of the two sets of ball screws (7) are connected to the first arc block (11) through the moving block (32).

3. The missile launch tube surface milling device according to claim 1, characterized in that, The external support mechanism includes several seventh electric telescopic rods (35) installed at equal angles on the inner wall of the first arc block (11) or the second arc block (12). The telescopic ends of the seventh electric telescopic rods (35) are fixedly connected to a rubber frame (41). A rubber roller (42) is rotatably installed inside the rubber frame (41). The rubber roller (42) makes rolling contact with the outer wall of the launching tube (6).

4. The missile launch tube surface milling device according to claim 1, characterized in that, The internal support mechanism includes several sixth electric telescopic rods (34) fixedly installed in a ring array on the outer wall of the first rotating rod (10). The telescopic ends of the sixth electric telescopic rods (34) are fixedly connected to clamping blocks (36), and rubber pads (38) are glued to the surface of the clamping blocks (36).

5. The missile launch tube surface milling device according to claim 4, characterized in that, The first rotating rod (10) is made of magnetic material, and a third electromagnet (37) is movably sleeved on its front end. A second mounting ring (33) is fixedly connected to the outside of the third electromagnet (37). An internal support mechanism is provided on the outside of the second mounting ring (33). An elastic cloth (40) is sleeved on the end of both the second mounting ring (33) and the first rotating rod (10). A silicone strip (39) is connected to the periphery of the elastic cloth (40). The silicone strip (39) is bonded to several corresponding rubber pads (38).

6. The missile launch tube surface milling device according to claim 1, characterized in that, The top of the work platform (2) has several first rotating rollers (8) arranged along its length. The first rotating rollers (8) and the second arc block (12) are staggered. The left and right ends of the first rotating rollers (8) are equipped with fifth electric telescopic rods (31). The fifth electric telescopic rods (31) are used to adjust the height of the first rotating rollers (8).

7. The missile launch tube surface milling device according to claim 1, characterized in that, A second electromagnet (28) is fixedly installed on the side of the first mounting ring (18) that contacts the first electric telescopic rod (17). A connecting rod (27) is fixedly connected to one side of the first mounting ring (18). The connecting rod (27) is rotatably connected to the inner side wall of the first placement groove. A first electromagnet (26) is movably sleeved on the outside of the connecting rod (27). The connecting rod (27) is made of magnetic material.

8. The missile launch tube surface milling device according to claim 7, characterized in that, The vacuum suction cup (20) is used to adsorb and fix the second electric telescopic rod (19). The vacuum suction cup (20) has a fixing plate (21) fixedly installed on the inner side wall of the first placement groove on one side. The fixing plate (21) has a clamping device (22) installed inside. The clamping device (22) is used to clamp and fix the second electric telescopic rod (19).

9. The missile launch tube surface milling device according to claim 1, characterized in that, The auxiliary support mechanism includes a stop bar (29) located inside the second placement slot. A fourth electric telescopic rod (25) is installed at the lower end of the stop bar (29). A second rotating rod (24) is provided on the side of the first mounting block (14) and the second mounting block (15) that are far away from each other. A motor (23) is provided at one end of the second rotating rod (24) to drive its rotation. A reducer is connected between the output end of the motor (23) and the second rotating rod (24). The end of the fourth electric telescopic rod (25) that is far away from the stop bar (29) is fixedly connected to the second rotating rod (24).

10. The missile launch tube surface milling device according to claim 9, characterized in that, The top of the stop bar (29) is rotatably mounted with a number of balls (30), which roll in contact with the outer surface of the launch tube (6).

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