Double-moving beam type gantry boring and milling machine

Abstract

The invention relates to the technical field of boring and milling machines, in particular to a double-moving-beam gantry boring and milling machine which comprises a boring and milling machine body, a machining table is arranged at the bottom of the boring and milling machine body, a fixed clamping mechanism is arranged on one side of the machining table, a movable clamping mechanism is arranged on one side of the fixed clamping mechanism, and the fixed clamping mechanism comprises a fixed plate. An abutting column is fixedly connected to one side of the fixing plate, clamping blocks are arranged on the circumference of the outer ring face of the abutting column, a connecting block is fixedly connected to one side of each clamping block, a connecting rod is rotationally installed on one side of each connecting block, an ejector block is rotationally installed at one end of each connecting rod, and an ejector rod is rotationally connected to the bottom of each ejector block; the other end of the clamping rod is rotationally connected with the rotating frame; through the cooperation of the fixed clamping mechanism and the movable clamping mechanism, the main shafts with different diameters and lengths can be conveniently and rapidly mounted and dismounted, the machining operation efficiency is improved, the stability of the main shafts in the machining process is improved through two-time fixing and limiting, and the machining precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of boring and milling machines, in particular to a double-moving beam type gantry boring and milling machine. Background Art

[0002] Boring and milling machines are a type of processing tool commonly used in the processing industry. They combine the functions of boring machines and milling machines in one, making processing more efficient and accurate, greatly improving product quality and labor efficiency. The main features of CNC gantry boring and milling machines are good rigidity, high precision and high efficiency. With appropriate milling cutter discs, the cutting speed can reach 800mm per minute, and the maximum cutting depth is 8 to 10mm, achieving efficient cutting processing. It can be used for large-surface milling of castings, steel parts and non-ferrous metal parts, and is generally used in production lines for box parts in industries such as diesel engines and tractors.

[0003] In the prior art, when a boring and milling machine processes the outer ring surface of a spindle, in order to prevent the spindle from being skewed or displaced during the processing, the two ends of the spindle are first limited and fixed by the cooperation of arc-shaped chucks and bolts installed on both sides of the processing table, and then the spindle is clamped and fixed near the required processing position through the detachable connection of the arc-shaped pressure plate and the bolts, thereby facilitating the operator to control the boring and milling machine for processing.

[0004] However, due to the different lengths and diameters of the spindles, it is necessary to repeatedly remove multiple bolts and replace the arc chuck to achieve the fixing effect on workpieces of various shapes. Not only is it time-consuming and labor-intensive to remove the bolts, which reduces operating efficiency, but it is also necessary to adjust the size of the arc chuck and the arc pressure plate to better fit the outer ring surface of the spindle, which increases processing costs and reduces processing efficiency. Summary of the invention

[0005] The object of the present invention is to provide a double-moving beam gantry boring and milling machine to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a double-acting beam gantry boring and milling machine, comprising: a boring and milling machine body, a processing table is arranged at the bottom of the boring and milling machine body, a fixed clamping mechanism is arranged on one side of the processing table, and a movable clamping mechanism is arranged on one side of the fixed clamping mechanism.

[0007] The fixed clamping mechanism includes a fixed plate, one side of the fixed plate is fixedly connected to an abutment column, the outer circle surface of the abutment column is circumferentially arranged with a clamping block, one side of the clamping block is fixedly connected to a connecting block, one side of the connecting block is rotatably installed with a connecting rod, one end of the connecting rod is rotatably installed with a top block, and the bottom of the top block is rotatably connected with a top rod.

[0008] The mobile clamping mechanism comprises a clamping rod, one end of which is slidably connected to the limit block, the other end of which is rotatably connected to the rotating frame, and one side of the rotating frame is slidably connected to the supporting plate.

[0009] Preferably, a group of fixed clamping mechanisms and movable clamping mechanisms are provided and are arranged symmetrically about the center plane of the processing table. The lower surface of the fixed plate is fixedly connected to the processing table. A slide groove is provided on the surface of the fixed plate, and a limiting groove is provided in the slide groove.

[0010] Preferably, the slide groove and the top block are slidably connected, one end of the connecting rod is rotatably sleeved on one end of the connecting block, the other end of the connecting rod is rotatably connected to one side of the top block through a long pin shaft, and the other side of the top block is rotatably connected to one end of the top rod through a short pin shaft.

[0011] Preferably, the other end of the push rod is rotatably connected to one side of the connecting sleeve through a short pin shaft, and the other side of the connecting sleeve is slidingly sleeved on the limit rod, and the limit rod is fixedly sleeved on the support seat. One end of the support seat is fixedly connected to the fixed plate, and a small threaded rod is rotatably sleeved in the support seat.

[0012] Preferably, the small threaded rods are arranged symmetrically up and down about the center plane of the fixed plate, the connecting sleeve and the small threaded rods are threadedly connected, a fixed sleeve at one end of the small threaded rod is provided with a driven wheel, the driven wheel is meshed with the driving wheel through a meshing belt, and a slide rail is provided on one side of the driving wheel.

[0013] Preferably, the lower surface of the slide rail is fixedly connected to the processing table, the slide rail is slidably connected to the lower surface of the adjustment seat, the upper surface of the adjustment seat is fixedly connected to one end of the connecting seat, and the other end of the connecting seat is fixedly connected to the bottom of the support plate.

[0014] Preferably, the support plate is fixedly connected to one side of the limit block, the limit blocks are arranged in a circular array about the surface of the support plate, a groove is provided on the other side of the limit block, the groove is slidingly connected to one end of the clamping rod, and the other end of the clamping rod is rotatably connected to the rotating frame through connecting columns on both sides.

[0015] Preferably, the outer ring surface of one side of the rotating frame is movably clamped between the limit blocks, the outer ring surface of the bottom of the rotating frame is fixedly connected to a worm gear plate, a worm is meshed on the lower side of the worm gear plate, both sides of the worm are rotatably sleeved in the connecting seat, and a sliding hole is opened on one side of the bottom of the adjustment seat.

[0016] Preferably, a cross bar is slidably connected in the sliding hole, a threaded hole is opened on the other side of the bottom of the adjustment seat, a large threaded rod is threadedly connected in the threaded hole, both ends of the cross bar are fixedly sleeved in the limit seat, and both ends of the large threaded rod are rotatably sleeved in the limit seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The spindle is processed by manipulating the boring and milling machine body, and the spindle is placed on the processing table, so that the clamping block initially limits the two ends of the spindle. The mobile clamping mechanism can further limit and fix the processing position. The support plate is adjusted to a suitable position. Under the rotation of the rotating frame, the three clamping rods are swung at the same time, so that the diameter of the arc at one end of the three clamping rods can be changed, and finally the spindles of different diameters can be clamped, thereby completing the secondary limit fixation of the spindle. When disassembly is required, only the rotating frame and the top rod need to move in the opposite direction. Through the fixed clamping The cooperation between the mechanism and the mobile clamping mechanism not only facilitates the rapid installation and removal of spindles of different diameters and lengths, thereby improving the processing operation efficiency, but also improves the stability of the spindle during processing through two fixations, improves the processing accuracy, and avoids the need to repeatedly disassemble multiple bolts and replace the arc chuck to achieve the fixing effect of workpieces of various shapes. Not only is the removal of the bolts time-consuming and laborious, which reduces the operating efficiency, but it is also necessary to adjust the size of the arc chuck and the arc pressure plate to better fit the outer ring surface of the spindle, thereby increasing the processing cost and reducing the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic top view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a bottom view schematic diagram of the overall structure of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 It is a schematic diagram of the internal structure of the present invention.

[0019] In the figure: 1. boring and milling machine body; 2. machining table; 3. fixed clamping mechanism; 4. mobile clamping mechanism; 5. fixed plate; 6. abutment column; 7. clamping block; 8. connecting block; 9. connecting rod; 10. top block; 11. top rod; 12. clamping rod; 13. limit block; 14. supporting plate; 15. slide groove; 16. limit groove; 17. connecting sleeve; 18. limit rod; 19. supporting seat; 20. small threaded rod; 21. driven wheel; 22. meshing belt; 23. driving wheel; 24. slide rail; 25. adjustment seat; 26. connecting seat; 27. groove; 28. connecting column; 29. ​​worm wheel plate; 30. worm; 31. slide hole; 32. cross bar; 33. threaded hole; 34. large threaded rod; 35. limit seat; 36. rotating frame. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 6 The present invention provides a technical solution: a double-acting beam gantry boring and milling machine, comprising: a boring and milling machine body 1, a processing table 2 is arranged at the bottom of the boring and milling machine body 1, a fixed clamping mechanism 3 is arranged on one side of the processing table 2, a mobile clamping mechanism 4 is arranged on one side of the fixed clamping mechanism 3, the fixed clamping mechanism 3 comprises a fixed plate 5, abutment columns 6 are fixedly connected to one side of the fixed plate 5, clamping blocks 7 are arranged on the circumference of the outer ring surface of the abutment columns 6, a connecting block 8 is fixedly connected to one side of the clamping block 7, a connecting block 8 is rotatably installed on one side of the connecting block 8, a connecting rod 9 is rotatably installed on one end of the connecting rod 9, a top block 10 is rotatably installed on the bottom of the top block 10, and the mobile clamping mechanism 4 comprises a clamping rod 12, one end of the clamping rod 12 is slidably connected to a limit block 13, the other end of the clamping rod 12 is rotatably connected to a rotating frame 36, and one side of the rotating frame 36 is slidably connected to a support plate 14.

[0022] The spindle is processed by manipulating the boring and milling machine body 1, and the spindle is placed on the processing table 2. The fixed clamping mechanism 3 limits and fixes the two ends of the spindle, and the top block 10 is pulled by the top rod 11 to move in the direction close to the abutment column 6, so that the top block 10 drives the connecting block 8 to move through the rotation connection with the connecting rod 9, and the connecting block 8 pushes the clamping block 7 to move in the direction close to the abutment column 6, and then under the synchronous movement of the four clamping blocks 7, the clamping blocks 7 initially limit the two ends of the spindle, and the mobile clamping mechanism 4 can further limit and fix the vicinity of the processing position, and the support plate 14 is adjusted to a suitable position. The clamping rod 12 is driven to move by the rotation between the support plate 14 and the rotating frame 36, so that The sliding connection between one end of the clamping rod 12 and the limit block 13 and the rotational connection between the other end of the clamping rod 12 and the rotating frame 36 make the three clamping rods 12 swing at the same time, thereby changing the diameter of the arc at one end of the clamping rod 12, and finally clamping the spindles of different diameters, thereby completing the secondary limit fixation of the spindle. When disassembly is required, it is only necessary to move the rotating frame 36 and the top rod 11 in the opposite direction. Through the cooperation of the fixed clamping mechanism 3 and the movable clamping mechanism 4, it is not only convenient to quickly install and disassemble spindles of different diameters and lengths, thereby improving the processing operation efficiency, but also through two fixations, the stability of the spindle during processing is improved, and the processing accuracy is improved.

[0023] Embodiment 2: On the basis of embodiment 1, a fixed clamping mechanism 3 and a movable clamping mechanism 4 are both provided with a group and are arranged symmetrically about the center plane of the processing table 2. The lower surface of the fixed plate 5 is fixedly connected to the processing table 2. A slide groove 15 is provided on the surface of the fixed plate 5. A limiting groove 16 is provided in the slide groove 15. Two fixed plates 5 are provided and are arranged symmetrically about the center plane of the processing table 2. The lower surfaces of the two fixed plates 5 are fixedly connected to the upper surface of the processing table 2. The slide groove 15 provided on the surface of the fixed plate 5 limits the top block 10. The limiting groove 16 provided on the inner side wall of the slide groove 15 limits the column rod fixedly connected to one end of the connecting block 8. The slide groove 15 is slidably connected with the top block 10, one end of the connecting rod 9 is rotatably sleeved on one end of the connecting block 8, the other end of the connecting rod 9 is rotatably connected to one side of the top block 10 through a long pin shaft, and the other side of the top block 10 is rotatably connected to one end of the top rod 11 through a short pin shaft, one end of the connecting rod 9 is rotatably sleeved on a column rod fixedly installed on the connecting block 8, the other end of the connecting rod 9 is rotatably connected to one side of the top block 10, the other side of the top block 10 is rotatably connected to one end of the top rod 11 through a short pin shaft, and the other end of the top rod 11 is rotatably connected to the connecting sleeve 17 through a short pin shaft, and the connecting sleeve 17 is provided with four and It is arranged in a rectangular array, the other end of the top rod 11 is rotatably connected to one side of the connecting sleeve 17 through a short pin shaft, the other side of the connecting sleeve 17 is slidably sleeved on the limit rod 18, the limit rod 18 is fixedly sleeved on the support seat 19, one end of the support seat 19 is fixedly connected to the fixed plate 5, a small threaded rod 20 is rotatably sleeved in the support seat 19, the connecting sleeve 17 is slidably sleeved on the limit rod 18, the limit rod 18 limits the connecting sleeve 17, and the support seat 19 limits the limit rod 18, the support seat 19 is arranged in a linear array with respect to the fixed plate 5, a small threaded rod 20 is rotatably sleeved in the support seat 19, and the small threaded rod 20 There are two sections of threads with opposite rotation directions on it. The small threaded rod 20 is symmetrically arranged up and down about the central plane of the fixed plate 5. The connecting sleeve 17 is threadedly sleeved with the small threaded rod 20. A driven wheel 21 is fixedly sleeved at one end of the small threaded rod 20. The driven wheel 21 is meshed with the driving wheel 23 through a meshing belt 22 for transmission. A slide rail 24 is provided on one side of the driving wheel 23. The driving wheel 23 is fixedly sleeved on the output end of the side motor. The driving wheel 23 is transmitted to the driven wheel 21 through the meshing belt 22, thereby ensuring the synchronization of the driving wheel 23 and the driven wheel 21 during rotation. The driven wheel 21 is fixedly sleeved at one end of the small threaded rod 20.

[0024] The two ends of the main shaft are passed through the support plates 14 so that the end of the main shaft contacts one side of the abutment column 6. At this time, by starting the side motor, the side motor drives the driving wheel 23 fixedly connected to its output end to rotate, so that through the meshing action between the driving wheel 23, the meshing belt 22, and the driven wheel 21, the driven wheel 21 drives the small threaded rod 20 to move. The small threaded rod 20 rotates under the limit of the support seat 19, thereby driving the connecting sleeve 17 threaded thereon to move toward each other. The connecting sleeve 17 slides through the limit of the limit rod 18. Under the transmission action of the connecting sleeve 17, the connecting sleeve 17 drives one end of the push rod 11 to rotate through the connection of the short pin shaft on one side, so that the other end of the push rod 11 is driven by the connection of the short pin shaft The top block 10 slides in the slide groove 15 toward the direction of the abutment column 6, and the top block 10 drives the connecting rod 9 to rotate toward the inner side of the fixed plate 5 through the connection with the long pin shaft, so that the connecting rod 9 lifts the clamping block 7 through the rotation connection with the bottom column of the connecting block 8, and the clamping block 7 moves toward the axial direction of the abutment column 6. The paper clamping block 7 abuts against the outer ring surface of the main shaft end, thereby completing the preliminary limit fixation of the two ends of the main shaft. When disassembly is required, it is only necessary to control the side motor to rotate in the opposite direction, thereby avoiding the trouble of the arc clamping block and the bolt to clamp and fix, improving the efficiency of fixing and disassembling the main shaft, thereby improving the processing efficiency, and at the same time improving the stability during the boring and milling process of the main shaft outer ring surface.

[0025] Embodiment 3: On the basis of embodiment 2, the lower surface of the slide rail 24 is fixedly connected to the processing table 2, the slide rail 24 is slidably connected to the lower surface of the adjustment seat 25, the upper surface of the adjustment seat 25 is fixedly connected to one end of the connecting seat 26, and the other end of the connecting seat 26 is fixedly connected to the bottom of the support plate 14. The slide rail 24 is symmetrically arranged on the upper surface of the processing table 2. The adjusting seat 25 is limited by the slide rail 24. The setting of the adjusting seat 25 facilitates the mobile clamping mechanism 4 to clamp and fix the spindle at different positions. The connecting seat 26 is fixedly connected between the support plate 14 and the adjusting seat 25, and the support plate 14 is fixed by the connecting seat 26. The support plate 14 is fixedly connected to one side of the limit block 13, and the limit blocks 13 are arranged in a circular array on the surface of the support plate 14. A groove 27 is provided on the other side of the limit block 13, and the groove 27 is slidably connected to one end of the clamping rod 12. The other end of the clamping rod 12 is rotatably connected to the rotating frame 36 through connecting columns 28 on both sides. The limit blocks 13 are arranged in a circular array on the surface of one side of the support plate 14, and are all fixedly connected to the support plate 14. The groove 27 provided on the limit block 13 limits one end of the clamping rod 12. The clamping rod 12 is also provided with an eccentric connecting column 28, which is rotatably connected to the rotating frame 36 through the connecting column 28. The outer ring surface of one side of the movable frame 36 is movably clamped between the limit blocks 13, and the outer ring surface of the bottom of the rotating frame 36 is fixedly connected to a worm wheel plate 29, and a worm 30 is meshed on the lower side of the worm wheel plate 29. The two sides of the worm 30 are rotatably sleeved in the connecting seat 26, and a sliding hole 31 is opened on one side of the bottom of the adjusting seat 25. The rotating frame 36 is limited by the limit block 13 during the rotation process. The bottom of the rotating frame 36 is fixedly connected to the worm wheel plate 29, and the worm wheel plate 29 is meshed with the worm 30 for transmission. The worm 30 is rotatably sleeved in the connecting seat 26, and one end of the worm 30 is fixedly connected to the output end of the driving motor. The driving motor is fixedly installed on the adjusting seat 25, and the sliding hole 31 is provided in the sliding hole 31. A cross bar 32 is slidably connected, a threaded hole 33 is provided on the other side of the bottom of the adjustment seat 25, a large threaded rod 34 is threadedly connected to the threaded hole 33, both ends of the cross bar 32 are fixedly sleeved in the limit seat 35, and both ends of the large threaded rod 34 are rotatably sleeved in the limit seat 35, a sliding hole 31 is provided on one side of the bottom of the adjustment seat 25, the sliding hole 31 is slidably connected to the cross bar 32, a threaded hole 33 is provided on the other side of the bottom of the adjustment seat 25, the adjustment seat 25 is driven to move through the cooperation of the threaded hole 33 and the large threaded rod 34, the cross bar 32 and the large threaded rod 34 are both limited by the limit seat 35, and the large threaded rod 34 is provided with two sections of threads with opposite rotation directions.

[0026] After the two ends of the main shaft are initially limited and fixed, the hand wheel fixed on the end of the large threaded rod 34 is twisted, so that the large threaded rod 34 is driven by the hand wheel to rotate under the limit of the limit seat 35. Under the rotation of the large threaded rod 34, the adjustment seats 25 installed on both sides thereof are driven to move toward or away from each other, and then the adjustment seats 25 are made to slide stably under the limit of the slide rail 24, so that the main shaft can be secondary limited and fixed according to the required processing position. After the adjustment seat 25 is adjusted to a suitable position, the drive motor is started, and the drive motor drives the worm 30 to rotate under the limit of the connecting seat 26, so that the worm 30 is meshed with the worm wheel plate 29 for transmission, so that the worm wheel plate 29 drives the rotating frame 36 to rotate under the limit of the limit block 13, and then the rotating frame 36 drives the clamping rod 12 to move One end of the clamping rod 12 realizes eccentric rotation under the rotational connection between the eccentrically arranged connecting column 28 and the rotating frame 36, while the other end of the clamping rod 12 slides through the limited groove 27 opened on the limit block 13. Through the above cooperation, the three clamping rods 12 can be swung at the same time, and the swing angles are also consistent, so that the diameters of the three clamping rods 12 change, thereby realizing the clamping of spindles with different shaft diameters, avoiding the need to adjust the size of the arc pressure plate to better fit the outer ring surface of the spindle, thereby increasing the processing cost and reducing the processing efficiency. At the same time, when the position clamping needs to be changed, it is only necessary to drive the motor to rotate in the opposite direction, which simplifies the operation steps, improves the processing efficiency, reduces the labor intensity, and improves the flexibility of the entire device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-acting beam gantry boring and milling machine, comprising a boring and milling machine body (1), characterized in that: A processing table (2) is arranged at the bottom of the boring and milling machine body (1); a fixed clamping mechanism (3) is arranged on one side of the processing table (2); and a movable clamping mechanism (4) is arranged on one side of the fixed clamping mechanism (3); The fixed clamping mechanism (3) comprises a fixed plate (5), one side of the fixed plate (5) is fixedly connected to an abutment column (6), a clamping block (7) is arranged circumferentially on the outer ring surface of the abutment column (6), one side of the clamping block (7) is fixedly connected to a connecting block (8), one side of the connecting block (8) is rotatably mounted with a connecting rod (9), one end of the connecting rod (9) is rotatably mounted with a top block (10), and the bottom of the top block (10) is rotatably connected to a top rod (11); The mobile clamping mechanism (4) comprises a clamping rod (12), one end of the clamping rod (12) is slidably connected to the limit block (13), the other end of the clamping rod (12) is rotatably connected to the rotating frame (36), and one side of the rotating frame (36) is slidably connected to the support plate (14).

2. A double-acting beam gantry boring and milling machine according to claim 1, characterized in that: The fixed clamping mechanism (3) and the movable clamping mechanism (4) are each provided in a group and are arranged symmetrically with respect to the central plane of the processing table (2); the lower surface of the fixed plate (5) is fixedly connected to the processing table (2); a sliding groove (15) is provided on the surface of the fixed plate (5); and a limiting groove (16) is provided in the sliding groove (15).

3. A double-acting beam gantry boring and milling machine according to claim 2, characterized in that: The slide groove (15) is slidably connected to the top block (10), one end of the connecting rod (9) is rotatably sleeved on one end of the connecting block (8), the other end of the connecting rod (9) is rotatably connected to one side of the top block (10) via a long pin, and the other side of the top block (10) is rotatably connected to one end of the top rod (11) via a short pin.

4. The double-acting beam gantry boring and milling machine according to claim 3, characterized in that: The other end of the push rod (11) is rotatably connected to one side of the connecting sleeve (17) via a short pin shaft, the other side of the connecting sleeve (17) is slidably sleeved on a limit rod (18), the limit rod (18) is fixedly sleeved on a support seat (19), one end of the support seat (19) is fixedly connected to the fixing plate (5), and a small threaded rod (20) is rotatably sleeved in the support seat (19).

5. The double-acting beam gantry boring and milling machine according to claim 4, characterized in that: The small threaded rods (20) are arranged symmetrically up and down about the central plane of the fixed plate (5); the connecting sleeve (17) and the small threaded rods (20) are threadedly sleeved; a driven wheel (21) is fixedly sleeved at one end of the small threaded rod (20); the driven wheel (21) is meshed with the driving wheel (23) through a meshing belt (22); and a slide rail (24) is provided on one side of the driving wheel (23).

6. The double-acting beam gantry boring and milling machine according to claim 5, characterized in that: The lower surface of the slide rail (24) is fixedly connected to the processing table (2), the slide rail (24) is slidably connected to the lower surface of the adjustment seat (25), the upper surface of the adjustment seat (25) is fixedly connected to one end of the connecting seat (26), and the other end of the connecting seat (26) is fixedly connected to the bottom of the support plate (14).

7. The double-acting beam gantry boring and milling machine according to claim 6, characterized in that: The support plate (14) is fixedly connected to one side of the limit block (13), the limit blocks (13) are arranged in a circular array on the surface of the support plate (14), the other side of the limit block (13) is provided with a groove (27), the groove (27) is slidably connected to one end of the clamping rod (12), and the other end of the clamping rod (12) is rotatably connected to the rotating frame (36) on both sides through connecting columns (28).

8. The double-acting beam gantry boring and milling machine according to claim 7, characterized in that: The outer ring surface of one side of the rotating frame (36) is movably clamped between the limit blocks (13), the outer ring surface of the bottom of the rotating frame (36) is fixedly connected to a worm plate (29), the lower side of the worm plate (29) is meshed with a worm (30), both sides of the worm (30) are rotatably sleeved in the connecting seat (26), and a sliding hole (31) is opened on one side of the bottom of the adjusting seat (25).

9. The double-acting beam gantry boring and milling machine according to claim 8, characterized in that: A cross bar (32) is slidably connected in the sliding hole (31), a threaded hole (33) is provided on the other side of the bottom of the adjustment seat (25), a large threaded rod (34) is threadedly connected in the threaded hole (33), two ends of the cross bar (32) are fixedly sleeved in the limit seat (35), and two ends of the large threaded rod (34) are rotatably sleeved in the limit seat (35).

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