Multi-swing-beam type multi-stage main shaft gantry boring and milling machine

Abstract

The invention relates to the technical field of gantry boring and milling machines, and particularly discloses a multi-swing-beam type multi-spindle gantry boring and milling machine which comprises a bottom plate, a clamping device is arranged on the upper surface of the bottom plate, gantry boring and milling cutter mechanisms are arranged on the two sides of the clamping device, and the clamping device comprises a fixing plate, a discharging plate and a clamping mechanism. The fixing plate is fixedly installed on the upper surface of the bottom plate, a first sliding way is formed in the top of the fixing plate, the bottom of the discharging plate extends into the first sliding way and is in sliding connection with the first sliding way, and the clamping mechanism is arranged on the upper surface of the discharging plate. And the objects can be placed at multiple positions according to needs, large objects or small objects can be clamped through the clamping mechanism, and the flexibility of the whole clamping device is effectively improved.

Description

Technical Field

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

[0002] In the process of mechanical processing, common milling machines cannot achieve high-precision and high-efficiency processing of large and complex parts. At this time, it is necessary to use a multi-swing beam multi-stage spindle gantry boring and milling machine, which can work with multiple spindles at the same time, thereby completing the milling machine work at the fastest speed, greatly improving the accuracy and processing efficiency.

[0003] In the prior art, common multi-swing beam multi-stage spindle gantry boring and milling machines still use traditional clamping devices, which clamp objects by placing them at a fixed position in the clamping device and then clamping the objects through the clamping mechanism.

[0004] However, conventional clamping devices are limited in the structure of objects that can be clamped, and the clamping mechanism cannot be changed at will when facing larger or smaller objects. Summary of the invention

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

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-swing beam type multi-stage spindle gantry boring and milling machine, comprising: a base plate, a clamping device is arranged on the upper surface of the base plate, gantry boring and milling cutter mechanisms are arranged on both sides of the clamping device, the clamping device comprises a fixed plate, a discharge plate and a clamping mechanism, the fixed plate is fixedly mounted on the upper surface of the base plate, a first slide is opened on the top of the fixed plate, the bottom of the discharge plate extends into the first slide and is slidably connected thereto, and the clamping mechanism is arranged on the upper surface of the discharge plate.

[0007] Preferably, a handle is fixedly mounted on one end of the discharge plate, a plurality of rectangular slots are evenly arranged on the top of the discharge plate, and positioning devices are arranged in both side walls of the discharge plate.

[0008] Preferably, the clamping mechanism comprises a clamping rod, a lifting plate, a clamping plate, a locking pin, a lifting pin, a rotating plate and a clamping assembly, the clamping assembly is arranged on the discharge plate, the rotating plate is arranged on the clamping assembly, the lifting plate is arranged on the rotating plate, a protruding block is arranged on one side of the lifting plate, a second sliding groove is provided on the upper surface of the lifting plate, the clamping plate is slidably connected to the second sliding groove, the two locking pins both penetrate the clamping plate and are slidably connected thereto, one end of the two locking pins both extend into the protruding block and are threadedly connected thereto, the clamping rod is arranged between the clamping plate and the protruding block, a third slideway is provided on the side of the clamping rod, each locking pin penetrates the third slideway and is slidably connected thereto, the lifting pins are installed at the four corners of the lifting plate, each lifting pin penetrates the lifting plate and is rotatably connected thereto, and one end of each lifting pin penetrates the rotating plate and is threadedly connected thereto.

[0009] Preferably, a rotating shaft is fixedly connected to the bottom of the rotating plate, a long axis is fixedly connected to the lower surface of the rotating shaft, and second through holes are provided around the rotating plate.

[0010] Preferably, the clamping assembly includes a clamping column, a clamping block assembly and a fixed plate, the clamping column extends into the rectangular clamping groove and is slidably connected thereto, the bottom of the clamping column is provided with a bottom groove, and the two side walls at the top of the bottom groove are provided with rectangular through holes, the clamping block assembly is arranged in the bottom groove, and the fixed plate is fixedly installed on the top of the clamping column.

[0011] Preferably, the block assembly includes a third spring, a lifting rod, an insertion rod, a telescopic block, a sliding rod and a second spring, the lifting rod passes through the two rectangular through holes and is slidably connected thereto, the insertion rod is fixedly connected to the center of the bottom of the lifting rod, the insertion rod is slidably connected to the bottom groove, the third spring is fixedly connected to the top of the lifting rod, the two telescopic blocks are respectively inserted into the two side walls of the bottom groove, the two telescopic blocks are symmetrically arranged, each of the telescopic blocks is provided with a first through hole, the second spring is fixedly connected between the two telescopic blocks, a sliding rod is arranged between the two telescopic blocks, both ends of the sliding rod respectively extend into the two first through holes and are slidably connected thereto, and the sliding rod passes through the second spring and is slidably connected thereto.

[0012] Preferably, a second slideway is provided at the bottom of the insertion rod, and the bottoms of two side walls of the second slideway are fixedly connected with conical heads.

[0013] Preferably, a fixing card is installed at the bottom of the fixed plate, the top end of the fixing card extends into one of the second through holes, the rotating shaft extends into the fixed plate and is rotatably connected thereto, the long axis passes through the top wall of the bottom groove and the fixed plate and is rotatably connected thereto, the long axis passes through the third spring and is slidably connected thereto, the long axis passes through the lifting rod and extends into the top of the insertion rod and is rotatably connected thereto.

[0014] Preferably, a plurality of symmetrical first slots are provided on the upper surface of the fixed plate, first slide slots are provided on both sides of the discharge plate, a cutout is provided at the bottom of one end of the first slide slot, a second slot is provided at the bottom of the other end of the first slide slot, the positioning device comprises a hand rod, a connecting rod and a card plate, the connecting rod passes through the side wall of the first slide slot and is slidably connected thereto, the hand rod is fixedly connected to one end of the connecting rod, the card plate is fixedly connected to the other end of the hand rod, the card plate is slidably connected to the first slide slot, and the card plate is respectively adapted to the cutout, the second slot and the first slot.

[0015] Preferably, the clamping device includes a gantry column, which is fixedly mounted on the upper surface of the base plate, a driving device is provided on the gantry column, a rotating device is slidably provided on one side of the gantry column, a swing arm is installed on the rotating device, and a milling cutter assembly is provided on the swing arm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention effectively enables the invention to clamp more objects by providing a clamping mechanism, a rectangular slot and other related structures, and the objects can be placed in multiple positions as needed. Both large and small objects can be clamped using the clamping mechanism.

[0017] The combination of the clamping mechanisms has no fixed shape, and the appropriate number of clamping mechanisms can be selected according to the shape of the object to be clamped, and the position of the clamping mechanism can be determined according to the placement position of the object, which effectively increases the flexibility of the entire clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the gantry boring and milling cutter mechanism of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the driving device of the present invention; Figure 4 It is a schematic diagram of the disassembled structure of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating plate and the rotating shaft of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the positioning device of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the card block assembly of the present invention.

[0019] In the figure: 1, bottom plate; 2, clamping device; 3, gantry boring and milling cutter mechanism; 4, driving device; 5, gantry column; 6, rotating device; 7, swing arm; 8, milling cutter assembly; 19, fixing plate; 20, first clamping slot; 21, first slideway; 22, handle; 23, unloading plate; 24, clamping mechanism; 25, rectangular clamping slot; 26, positioning device; 27, incision; 28, second clamping slot; 29, first slideway; 30, hand lever; 31, connecting rod; 32, clamping plate; 33, clamping assembly; 34, clamping block assembly; 35, clamping Column; 36, fixed plate; 37, fixed clamp; 39, bottom groove; 40, telescopic block; 42, first through hole; 43, slide rod; 44, second spring; 45, insertion rod; 46, lifting rod; 47, second slide; 48, conical head; 49, third spring; 50, clamping rod; 51, third slide; 52, raised block; 53, lifting nail; 54, locking nail; 55, clamping plate; 56, second slide groove; 57, rotating plate; 58, second through hole; 59, lifting plate; 60, long axis; 61, rectangular through hole; 62, rotating shaft. 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, not all of them, 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. Embodiment 1

[0021] See also Figure 1-Figure 3 The present invention provides a technical solution: a multi-swing beam multi-stage spindle gantry boring and milling machine, comprising: a base plate 1, a clamping device 2 is arranged on the upper surface of the base plate 1, the clamping device 2 is used to clamp an object, and gantry boring and milling cutter mechanisms 3 are arranged on both sides of the clamping device 2. The gantry boring and milling cutter mechanisms 3 can be driven by multiple driving devices 4, so as to effectively control the milling cutter to work.

[0022] The clamping device 2 includes a fixed plate 19, a discharge plate 23 and a clamping mechanism 24. The fixed plate 19 is fixedly installed on the upper surface of the base plate 1. The fixed plate 19 provides a carrier for the discharge plate 23. A first slideway 21 is provided on the top of the fixed plate 19. The bottom of the discharge plate 23 extends into the first slideway 21 and is slidably connected thereto. The main parts of the discharge plate 23 are arranged above the first slideway 21. The clamping mechanism 24 is arranged on the upper surface of the discharge plate 23. The clamping mechanism 24 is used to fix the object on the discharge plate 23. A handle 22 is fixedly installed at one end of the discharge plate 23. The setting of the handle 22 makes it more convenient to push and pull the discharge plate 23. A plurality of rectangular slots 25 are evenly provided on the top of the discharge plate 23. The rectangular slots 25 are used to fix the clamping mechanism 24. Positioning devices 26 are provided in the two side walls of the discharge plate 23. The fixing device is used to fix the discharge plate 23 on the fixed plate 19.

[0023] In actual use, when an object needs to be placed, the discharge plate 23 can be pulled out, so that the object can be conveniently placed at a certain position on the discharge plate 23. After the object is fixed, push the handle 22 to push the discharge plate 23 to a certain position and then use the fixing device to fix it. The discharge plate 23 can be fixed on the fixing plate 19, and then the milling cutter can be started for processing. Embodiment 2

[0024] See also Figure 4-Figure 5 On the basis of the first embodiment, the clamping mechanism 24 includes a clamping rod 50, a lifting plate 59, a clamping plate 55, a locking pin 54, a lifting pin 53, a rotating plate 57 and a clamping assembly 33. The clamping assembly 33 is arranged on the discharge plate 23. Two or more clamping assemblies 33 can be arranged. The rotating plate 57 is arranged on the clamping assembly 33. The rotating plate 57 can rotate on the clamping assembly 33. The lifting plate 59 is arranged on the rotating plate 57. The lifting plate 59 can be lifted and lowered on the rotating plate 57. A protrusion 52 is arranged on one side of the lifting plate 59. The protrusion is a protrusion on a part of the lifting plate 59. A second slide groove 56 is opened on the upper surface of the lifting plate 59. The clamping plate 55 is slidably connected in the second slide groove 56, so that the clamping plate 55 is in the second slide groove. The sliding inside 56 is accompanied by two actions of clamping and loosening. The two locking pins 54 penetrate the clamping plate 55 and are slidably connected thereto. The clamping pins are the key to clamping. One end of the two locking pins 54 extends into the raised block 52 and is threadedly connected thereto. The rotation of the clamping pins can further extend into the raised block 52, which also means further clamping. The clamping rod 50 is arranged between the clamping plate 55 and the raised block 52. Only after the clamping rod 50 is fixed can other objects be fixed. A third slide 51 is provided on the side of the clamping rod 50. The third slide 51 is for adjusting the clamping rod 50. Each locking pin 54 penetrates the third slide 51 and is slidably connected thereto. When it is about to be locked, the clamping rod 50 can move between the raised block 52 and the clamping plate 55.

[0025] The lifting pins 53 are installed at the four corners of the lifting plate 59. Each lifting pin 53 penetrates the lifting plate 59 and is rotatably connected thereto. No displacement can occur between the lifting pins 53 and the lifting plate 59, only the rotation of the lifting pins 53. One end of each lifting pin 53 penetrates the rotating plate 57 and is threadedly connected thereto. The rotation of the lifting pins 53 will be accompanied by the lifting and lowering of the lifting plate 59. A rotating shaft 62 is fixedly connected to the bottom of the rotating plate 57. The rotating shaft 62 is used for rotation. A long shaft 60 is fixedly connected to the lower surface of the rotating shaft 62. The long shaft 60 makes the bearing more secure and will not fall off when fixing objects. The long shaft 60 also provides a telescopic guide for the third spring 49. Second through holes 58 are provided around the rotating plate 57. The second through holes 58 are used to fix the rotating plate 57.

[0026] In actual use, one end or the bottom of the clamping rod 50 can be used to contact the object first, and then the lifting pin 53 or the locking pin 54 can be locked, so that the object can be firmly fixed. The fixed clamping mechanism 24 can be installed around the object. If one is not enough, multiple ones can be set. Embodiment 3

[0027] See also Figure 4 , Figure 5 , Figure 7 and Figure 8 On the basis of the second embodiment, the clamping assembly 33 includes a clamping column 35, a clamping block assembly 34 and a fixed disk 36. The clamping column 35 extends into the rectangular clamping groove 25 and is slidably connected thereto. The clamping column 35 is clamped with the rectangular clamping groove 25 through the clamping block assembly 34. A bottom groove 39 is provided at the bottom of the clamping column 35. The bottom groove 39 is set deeper. Rectangular through holes 61 are provided on the two side walls at the top of the bottom groove 39. The clamping block assembly 34 is set in the bottom groove 39. The clamping block assembly 34 is the key to the clamping. The fixed disk 36 is fixedly installed on the top of the clamping column 35. The fixed disk 36 is used to provide a fixed medium for the rotating disk.

[0028] The block assembly 34 includes a third spring 49, a lifting rod 46, an insertion rod 45, a telescopic block 40, a sliding rod 43 and a second spring 44. The lifting rod 46 passes through two rectangular through holes 61 and is slidably connected thereto. The lifting rod 46 is used to lift the insertion rod 45. The insertion rod 45 is fixedly connected to the center of the bottom of the lifting rod 46. The insertion rod 45 is used to be inserted between the two telescopic blocks 40 and separate the two telescopic blocks 40. The insertion rod 45 is slidably connected to the bottom groove 39. The third spring 49 is fixedly connected to the top of the lifting rod 46. The third spring 49 is used to make the lifting rod 46 at the bottom of the rectangular through hole 61. The elastic force of the third spring 49 under normal conditions is much greater than the elastic force of the second spring 44 under normal conditions. The two telescopic blocks 40 are respectively inserted into the two side walls of the bottom groove 39, and the two telescopic blocks 40 can be telescoped in the side walls and in the bottom groove 39.

[0029] The two telescopic blocks 40 are symmetrically arranged, that is, the telescopic and retracting can be carried out simultaneously. A connecting block is arranged in the bottom groove 39, so that the center part of the slide rod 43 is fixed in the bottom groove 39, so that the center part of the second spring 44 is fixed together with the center part of the slide rod 43. A first through hole 42 is opened on each telescopic block 40, and the second spring 44 is fixedly connected between the two telescopic blocks 40. A slide rod 43 is arranged between the two telescopic blocks 40. When the telescopic blocks 40 are squeezed by the insertion rod 45, the two telescopic blocks 40 will shrink and approach each other, and the two ends of the slide rod 43 will respectively extend into the two first through holes 42 and be slidably connected thereto. The slide rod 43 passes through the second spring 44 and is slidably connected thereto. The center parts of the slide rod 43 and the second spring 44 are fixed, and the spring cannot slide on the slide rod 43 at will, but the two ends of the spring can slide on the slide rod 43 separately.

[0030] A second slide 47 is provided at the bottom of the insertion rod 45, and the second slide 47 is used to avoid the slide bar 43 and the second spring 44 to ensure that when the insertion rod 45 separates the two telescopic blocks 40, it will not touch the slide bar 43 and the second spring 44. The bottoms of the two side walls of the second slide 47 are fixedly connected with a conical head 48, and the bottom of the conical head 48 is a pointed end, which can separate the two telescopic blocks 40. A fixing card 37 is installed at the bottom of the fixed disk 36, and the fixing card 37 can fix the rotating plate 57. The top end of the fixing card 37 extends into one of the second through holes 58, so that the rotating plate 57 can be fixed. The rotating shaft 62 extends into the fixed plate 36 and is rotatably connected thereto, the long shaft 60 passes through the top wall of the bottom groove 39 and the fixed plate 36 and is rotatably connected thereto, the rotating shaft 62 and the long shaft 60 simultaneously act as bearings for the rotating plate 57, so that the rotating plate 57 can rotate smoothly, the long shaft 60 passes through the third spring 49 and is slidably connected thereto, the long shaft 60 provides a telescopic direction for the third spring 49, making it less likely to tilt, the long shaft 60 passes through the lifting rod 46 and extends into the top of the insertion rod 45 and is rotatably connected thereto, so that when the upper lifting rod 46 compresses the third spring 49, it will not affect the rotation of the long shaft 60.

[0031] In actual use, firstly snap the clamping assembly 33 into the rectangular clamping groove 25. When the lifting rod 46 falls to the lower surface of the rectangular through hole 61, the clamping is successful. Then select the direction, and fix it by rotating the rotating plate 57 and then the fixing clamp 37. Then move the clamping rod 50, and rotate the lifting pin 53 and the locking pin 54 as needed to fix the object to be milled. Embodiment 4

[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 6On the basis of the third embodiment, a plurality of symmetrical first card grooves 20 are provided on the upper surface of the fixing plate 19, and the first card grooves 20 are used to fix the discharge plate 23. First slide grooves 29 are provided on both sides of the discharge plate 23, and a cutout 27 is provided at the bottom of one end of the first slide groove 29, and the width of the cutout 27 is slightly larger than the width of the card plate 32. A second card groove 28 is provided at the bottom of the other end of the first slide groove 29, and the second card groove 28 is used to place the card plate 32 when the discharge plate 23 is not fixed.

[0033] The positioning device 26 includes a hand rod 30, a connecting rod 31 and a card plate 32. The connecting rod 31 passes through the side wall of the first slide groove 29 and is slidably connected thereto. The connecting rod 31 extends into the first slide groove 29. The hand rod 30 is fixedly connected to one end of the connecting rod 31. The use of the hand rod 30 makes it easy to move. The card plate 32 is fixedly connected to the other end of the hand rod 30. The card plate 32 is used to be stuck in the incision 27 and the first card groove 20, so that the discharge plate 23 cannot slide on the fixed plate 19. The card plate 32 is slidably connected to the first slide groove 29, and the card plate 32 is also slidably connected to the incision 27. The card plate 32 is respectively connected to the incision 27, the second card groove 28 and the first card groove 20 is adapted, and a plurality of second slots 28 are provided so that more positions can be selected. The clamping device 2 includes a gantry column 5, which is a main supporting column. The gantry column 5 is fixedly mounted on the upper surface of the base plate 1. A driving device 4 is arranged on the gantry column 5, and the driving device 4 can provide power for certain components. A rotating device 6 is slidingly arranged on one side of the gantry column 5, and the rotating device 6 can select the cutting angle of the milling cutter. A swing arm 7 is installed on the rotating device 6. The existence of the swing arm 7 makes the device more flexible. A milling cutter assembly 8 is arranged on the swing arm 7, and the milling cutter assembly 8 is provided with its own driving device 4, so that the milling cutter can cut and move quickly.

[0034] When the object is to be placed, the discharge plate 23 can be pulled out, so that the object can be placed at a certain position on the discharge plate 23. When the object is fixed, the handle 22 is pushed to push the discharge plate 23 to a certain position and then use the fixing device to fix it. The discharge plate 23 can be fixed on the fixing plate 19, and then the milling cutter can be started for processing. One end or the bottom of the clamping rod 50 can be used to contact the object first, and then the lifting nail 53 or the locking nail 54 can be locked. In this way, the object can be firmly fixed. The fixing clamping mechanism 24 can be installed around the object. If one is not enough, multiple ones can be set. When the clamping component 33 needs to be clamped in the rectangular clamping groove 25, when the lifting rod 46 falls to the lower surface of the rectangular through hole 61, the clamping is successful, and then the direction is selected, and the rotating plate 57 is rotated and then fixed by the fixing clamp 37, and then the clamping rod 50 is moved, and the lifting nail 53 and the locking nail 54 are rotated as needed to fix the object to be milled.

[0035] 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 multi-swing beam type multi-stage spindle gantry boring and milling machine, comprising: A base plate (1), characterized in that: a clamping device (2) is provided on the upper surface of the base plate (1), and gantry boring and milling cutter mechanisms (3) are provided on both sides of the clamping device (2), the clamping device (2) comprises a fixed plate (19), a discharge plate (23) and a clamping mechanism (24), the fixed plate (19) is fixedly mounted on the upper surface of the base plate (1), a first slideway (21) is provided on the top of the fixed plate (19), the bottom of the discharge plate (23) extends into the first slideway (21) and is slidably connected thereto, and the clamping mechanism (24) is arranged on the upper surface of the discharge plate (23).

2. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 1, characterized in that: A handle (22) is fixedly mounted on one end of the discharge plate (23), a plurality of rectangular slots (25) are evenly arranged on the top of the discharge plate (23), and positioning devices (26) are arranged in both side walls of the discharge plate (23).

3. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 2, characterized in that: The clamping mechanism (24) comprises a clamping rod (50), a lifting plate (59), a clamping plate (55), a locking pin (54), a lifting pin (53), a rotating plate (57) and a clamping assembly (33), wherein the clamping assembly (33) is arranged on the discharge plate (23), the rotating plate (57) is arranged on the clamping assembly (33), the lifting plate (59) is arranged on the rotating plate (57), a protruding block (52) is arranged on one side of the lifting plate (59), a second sliding groove (56) is opened on the upper surface of the lifting plate (59), the clamping plate (55) is slidably connected in the second sliding groove (56), and the two locking pins (54) both penetrate the The clamping plate (55) is slidably connected thereto, one end of the two locking pins (54) extends into the protruding block (52) and is threadedly connected thereto, the clamping rod (50) is arranged between the clamping plate (55) and the protruding block (52), a third slideway (51) is opened on the side of the clamping rod (50), each of the locking pins (54) penetrates the third slideway (51) and is slidably connected thereto, the lifting pins (53) are installed at the four corners of the lifting plate (59), each of the lifting pins (53) penetrates the lifting plate (59) and is rotatably connected thereto, and one end of each of the lifting pins (53) penetrates the rotating plate (57) and is threadedly connected thereto.

4. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 3, characterized in that: The bottom of the rotating plate (57) is fixedly connected to a rotating shaft (62), the lower surface of the rotating shaft (62) is fixedly connected to a long axis (60), and second through holes (58) are provided around the rotating plate (57).

5. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 4, characterized in that: The clamping assembly (33) comprises a clamping column (35), a clamping block assembly (34) and a fixing plate (36); the clamping column (35) extends into the rectangular clamping groove (25) and is slidably connected thereto; a bottom groove (39) is provided at the bottom of the clamping column (35); two side walls at the top of the bottom groove (39) are provided with rectangular through holes (61); the clamping block assembly (34) is arranged in the bottom groove (39); and the fixing plate (36) is fixedly mounted on the top of the clamping column (35).

6. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 5, characterized in that: The block assembly (34) comprises a third spring (49), a lifting rod (46), an inserting rod (45), a telescopic block (40), a sliding rod (43) and a second spring (44); the lifting rod (46) passes through the two rectangular through holes (61) and is slidably connected thereto; the inserting rod (45) is fixedly connected to the center of the bottom of the lifting rod (46); the inserting rod (45) is slidably connected to the bottom groove (39); the third spring (49) is fixedly connected to the top of the lifting rod (46); the two telescopic blocks (40) are The blocks (40) are respectively inserted into the two side walls of the bottom groove (39), the two telescopic blocks (40) are symmetrically arranged, each of the telescopic blocks (40) is provided with a first through hole (42), a second spring (44) is fixedly connected between the two telescopic blocks (40), a sliding rod (43) is arranged between the two telescopic blocks, two ends of the sliding rod (43) are respectively extended into the two first through holes (42) and are slidably connected thereto, and the sliding rod (43) passes through the second spring (44) and is slidably connected thereto.

7. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 6, characterized in that: A second slideway (47) is provided at the bottom of the insertion rod (45), and conical heads (48) are fixedly connected to the bottoms of two side walls of the second slideway (47).

8. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 7, characterized in that: A fixing card (37) is installed at the bottom of the fixing plate (36), the top end of the fixing card (37) extends into one of the second through holes (58), the rotating shaft (62) extends into the fixing plate (36) and is rotatably connected thereto, the long shaft (60) passes through the top wall of the bottom groove (39) and the fixing plate (36) and is rotatably connected thereto, the long shaft (60) passes through the third spring (49) and is slidably connected thereto, the long shaft (60) passes through the lifting rod (46) and extends into the top of the insertion rod (45) and is rotatably connected thereto.

9. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 8, characterized in that: The upper surface of the fixing plate (19) is provided with a plurality of symmetrical first slots (20), both sides of the discharge plate (23) are provided with first slide slots (29), a notch (27) is provided at the bottom of one end of the first slide slot (29), a second slot (28) is provided at the bottom of the other end of the first slide slot (29), the positioning device (26) comprises a hand lever (30), a connecting rod (31) and a card plate (32), the connecting rod (31) passes through the side wall of the first slide slot (29) and is slidably connected thereto, the hand lever (30) is fixedly connected to one end of the connecting rod (31), the card plate (32) is fixedly connected to the other end of the hand lever (30), the card plate (32) is slidably connected to the first slide slot (29), and the card plate (32) is respectively adapted to the notch (27), the second slot (28) and the first slot (20).

10. The multi-swing beam type multi-stage spindle gantry boring and milling machine according to claim 9, characterized in that: The clamping device (2) comprises a gantry column (5), the gantry column (5) is fixedly mounted on the upper surface of the base plate (1), a driving device (4) is arranged on the gantry column (5), a rotating device (6) is slidably arranged on one side of the gantry column (5), a swing arm (7) is mounted on the rotating device (6), and a milling cutter assembly (8) is arranged on the swing arm (7).

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