A multi-beam multi-stage spindle gantry boring and milling machine

Abstract

This invention relates to the field of gantry milling machine technology, specifically disclosing a multi-beam, multi-stage spindle gantry milling machine, comprising: a base plate, a clamping device on the upper surface of the base plate, and gantry milling cutter mechanisms on both sides of the clamping device. The clamping device includes a fixed plate, a feeding plate, and a clamping mechanism. The fixed plate is fixedly installed on the upper surface of the base plate, and a first slide rail is formed at the top of the fixed plate. The bottom of the feeding plate extends into the first slide rail and is slidably connected thereto. The clamping mechanism is disposed on the upper surface of the feeding plate. The advantages are: this invention effectively allows for the clamping of more objects, and the objects can be placed in multiple positions as needed. Both large and small objects can be clamped using the clamping mechanism, effectively increasing the flexibility of the entire clamping device.

Description

Technical Field

[0001] This invention relates to the field of gantry milling machine technology, specifically a multi-beam type multi-stage spindle gantry milling machine. Background Technology

[0002] In machining processes, common milling machines cannot achieve high precision and high efficiency in machining large and complex parts. At this time, multi-beam multi-stage spindle gantry milling machines are needed, which can work multiple spindles at the same time, thereby completing the milling work at the fastest speed, greatly improving both precision and machining efficiency.

[0003] In the existing technology, common multi-beam multi-stage spindle gantry milling machines still use traditional clamping devices, which involve placing the object in a fixed position on the clamping device and then clamping the object through the clamping mechanism.

[0004] However, common clamping devices have a limited range of object structures they can hold, and the clamping mechanism cannot be changed arbitrarily when dealing with larger or smaller objects. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-beam, multi-stage spindle gantry boring and milling machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-beam type multi-stage spindle gantry boring and milling machine, comprising: a base plate, a clamping device provided on the upper surface of the base plate, gantry boring and milling cutter mechanisms provided on both sides of the clamping device, the clamping device comprising a fixing plate, a feeding plate and a clamping mechanism, the fixing plate being fixedly installed on the upper surface of the base plate, a first slide rail being provided at the top of the fixing plate, the bottom of the feeding plate extending into the first slide rail and slidably connected thereto, and the clamping mechanism being disposed on the upper surface of the feeding plate.

[0007] Preferably, a handle is fixedly installed at one end of the feeding plate, a plurality of rectangular slots are evenly opened on the top of the feeding plate, and positioning devices are provided in the inner side walls of both sides of the feeding plate.

[0008] Preferably, the clamping mechanism includes a locking rod, a lifting plate, a clamping plate, locking pins, lifting pins, a rotating plate, and a locking assembly. The locking assembly is disposed on the feeding plate, the rotating plate is disposed on the locking assembly, the lifting plate is disposed on the rotating plate, a protrusion is provided on one side of the lifting plate, a second sliding groove is formed on the upper surface of the lifting plate, the clamping plate is slidably connected in the second sliding groove, two locking pins penetrate the clamping plate and are slidably connected thereto, one end of each locking pin extends into the protrusion and is threadedly connected thereto, the locking rod is disposed between the clamping plate and the protrusion, a third sliding track is formed on the side of the locking rod, each locking pin penetrates the third sliding track 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, 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 shaft is fixedly connected to the lower surface of the rotating shaft, and a second through hole is provided around all four sides of the rotating plate.

[0010] Preferably, the snap-fit ​​assembly includes a snap-fit ​​post, a snap-fit ​​block assembly, and a fixing plate. The snap-fit ​​post extends into the rectangular snap-fit ​​groove and is slidably connected to it. A bottom groove is formed at the bottom of the snap-fit ​​post, and rectangular through holes are formed on the two side walls at the top of the bottom groove. The snap-fit ​​block assembly is disposed in the bottom groove, and the fixing plate is fixedly installed on the top of the snap-fit ​​post.

[0011] Preferably, the locking block assembly includes a third spring, a lifting rod, an insert rod, a telescopic block, a sliding rod, and a second spring. The lifting rod passes through two rectangular through holes and is slidably connected to them. The insert rod is fixedly connected to the center of the bottom of the lifting rod and 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 telescopic block has a first through hole. A second spring is fixedly connected between the two telescopic blocks. A sliding rod is provided between the two telescopic blocks. The two ends of the sliding rod extend into the two first through holes and are slidably connected to them. The sliding rod passes through the second spring and is slidably connected to it.

[0012] Preferably, a second slide is provided at the bottom of the insertion rod, and a conical head is fixedly connected to the bottom of each of the two side walls of the second slide.

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

[0014] Preferably, the upper surface of the fixing plate is provided with a plurality of symmetrical first slots, and the two sides of the feeding plate are provided with first sliding grooves. A slit is provided at the bottom of one end of the first sliding groove, and a second slot is provided at the bottom of the other end of the first sliding groove. The positioning device includes a handle, a connecting rod, and a locking plate. The connecting rod passes through the side wall of the first sliding groove and is slidably connected to it. The handle is fixedly connected to one end of the connecting rod, and the locking plate is fixedly connected to the other end of the handle. The locking plate is slidably connected to the first sliding groove, and the locking plate is adapted to the slit, the second slot, and the first slot, respectively.

[0015] Preferably, the clamping device includes a gantry column, which is fixedly installed on the upper surface of the base plate. A driving device is provided on the gantry column, and 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 beneficial effects of the present invention are:

[0017] By setting up a clamping mechanism, rectangular slots and other related structures, this invention effectively enables it to clamp more objects, and the objects can be placed in multiple positions as needed. Both large and small objects can be clamped using the clamping mechanism.

[0018] The clamping mechanism assembly has no fixed shape. 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. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the gantry boring and milling cutter mechanism of the present invention;

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the driving device of the present invention;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the clamping mechanism of the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the rotating plate and rotating shaft of the present invention;

[0024] Figure 6 This is a three-dimensional structural schematic diagram of the positioning device of the present invention;

[0025] Figure 7 This is a three-dimensional structural schematic diagram of the snap-fit ​​component of the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the card block component of the present invention.

[0027] In the diagram: 1. Base plate; 2. Clamping device; 3. Gantry boring and milling cutter mechanism; 4. Drive device; 5. Gantry column; 6. Rotating device; 7. Swing arm; 8. Milling cutter assembly; 19. Fixing plate; 20. First slot; 21. First slide rail; 22. Handle; 23. Feed plate; 24. Clamping mechanism; 25. Rectangular slot; 26. Positioning device; 27. Cutting notch; 28. Second slot; 29. ​​First slide rail; 30. Hand lever; 31. Connecting rod; 32. Clamping plate; 33. Clamping assembly; 34. Clamping block assembly; 35. Clamping Column; 36. Fixed plate; 37. Fixed clip; 39. Bottom groove; 40. Telescopic block; 42. First through hole; 43. Slide rod; 44. Second spring; 45. Insert rod; 46. Lifting rod; 47. Second slide rail; 48. Conical head; 49. Third spring; 50. Locking rod; 51. Third slide rail; 52. Protrusion block; 53. Lifting pin; 54. Locking pin; 55. Clamping plate; 56. Second slide groove; 57. Rotating plate; 58. Second through hole; 59. Lifting plate; 60. Long shaft; 61. Rectangular through hole; 62. Rotating shaft. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0029] Please see Figures 1-3The present invention provides a technical solution: a multi-beam type multi-stage spindle gantry boring and milling machine, comprising: a base plate 1, a clamping device 2 provided on the upper surface of the base plate 1, the clamping device 2 being used to clamp objects, and gantry boring and milling cutter mechanisms 3 being provided on both sides of the clamping device 2, the gantry boring and milling cutter mechanisms 3 being driven by multiple driving devices 4, thereby effectively controlling the milling cutter to work.

[0030] The clamping device 2 includes a fixing plate 19, a feeding plate 23, and a clamping mechanism 24. The fixing plate 19 is fixedly installed on the upper surface of the base plate 1 and provides a carrier for the feeding plate 23. A first slide rail 21 is provided on the top of the fixing plate 19. The bottom of the feeding plate 23 extends into the first slide rail 21 and is slidably connected to it. The main part of the feeding plate 23 is located above the first slide rail 21. The clamping mechanism 24 is located on the upper surface of the feeding plate 23 and is used to fix the object on the feeding plate 23. A handle 22 is fixedly installed on one end of the feeding plate 23. The handle 22 makes it easier to push and pull the feeding plate 23. Multiple rectangular slots 25 are evenly provided on the top of the feeding plate 23. The rectangular slots 25 are used to fix the clamping mechanism 24. Positioning devices 26 are provided in the inner side walls of both sides of the feeding plate 23. The fixing devices are used to fix the feeding plate 23 on the fixing plate 19.

[0031] In actual use, when it is necessary to place an object, the feeding plate 23 can be pulled out, so that the object can be placed in a certain position on the feeding plate 23. After the object is fixed, push the handle 22 to push the feeding plate 23 to a certain position and then use the fixing device to fix it. The feeding plate 23 can be fixed on the fixing plate 19, and then the milling cutter can be started for processing. Example 2

[0032] Please see Figures 4-5Based on Embodiment 1, the clamping mechanism 24 includes a locking rod 50, a lifting plate 59, a clamping plate 55, a locking pin 54, a lifting pin 53, a rotating plate 57, and a locking assembly 33. The locking assembly 33 is disposed on the feeding plate 23. Two or more locking assemblies 33 can be provided. The rotating plate 57 is disposed on the locking assembly 33 and can rotate on the locking assembly 33. The lifting plate 59 is disposed on the rotating plate 57 and can rise and fall on the rotating plate 57. A protrusion 52 is provided on one side of the lifting plate 59. The protrusion is a protrusion on a part of the lifting plate 59. A second sliding groove 56 is provided on the upper surface of the lifting plate 59. The clamping plate 55 is slidably connected in the second sliding groove 56. Thus, the clamping plate 55 is in the second sliding groove. The sliding within 56 involves both clamping and releasing actions. Both locking pins 54 penetrate the clamping plate 55 and are slidably connected to it. The clamping pins are the key to clamping. One end of each locking pin 54 extends into the protrusion 52 and is threadedly connected to it. The rotation of the clamping pins can further extend into the protrusion 52, which also means further clamping. The locking rod 50 is located between the clamping plate 55 and the protrusion 52. Only after the locking rod 50 is fixed can other objects be fixed. A third slide rail 51 is provided on the side of the locking rod 50. The third slide rail 51 is for adjusting the locking rod 50. Each locking pin 54 penetrates the third slide rail 51 and is slidably connected to it. When it is about to be locked, the locking rod 50 can move between the protrusion 52 and the clamping plate 55.

[0033] Lifting pins 53 are installed at the four corners of the lifting plate 59. Each lifting pin 53 passes through the lifting plate 59 and is rotatably connected to it. There is no displacement between the lifting pins 53 and the lifting plate 59; only the lifting pins 53 can rotate. One end of each lifting pin 53 passes through the rotating plate 57 and is threadedly connected to it. The rotation of the lifting pins 53 is accompanied by the rise and fall 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 guide for the extension and retraction of the third spring 49. Second through holes 58 are opened around the rotating plate 57. The second through holes 58 are used to fix the rotating plate 57.

[0034] In actual use, one end or bottom of the lever 50 can be used to contact the object first, and then the lifting pin 53 or locking pin 54 can be locked. This will firmly fix the object. The fixing clamping mechanism 24 can be installed on all four sides of the object. If one is not enough, multiple can be set. Example 3

[0035] Please see Figure 4 , Figure 5 , Figure 7 and Figure 8Based on Embodiment 2, the snap-fit ​​assembly 33 includes a snap-fit ​​post 35, a snap-fit ​​block assembly 34, and a fixing plate 36. The snap-fit ​​post 35 extends into the rectangular snap-fit ​​groove 25 and is slidably connected to it. The snap-fit ​​post 35 is snapped into the rectangular snap-fit ​​groove 25 through the snap-fit ​​block assembly 34. A bottom groove 39 is provided at the bottom of the snap-fit ​​post 35. The bottom groove 39 is relatively deep. Rectangular through holes 61 are provided on both side walls at the top of the bottom groove 39. The snap-fit ​​block assembly 34 is set in the bottom groove 39. The snap-fit ​​block assembly 34 is the key to the snap-fit. The fixing plate 36 is fixedly installed on the top of the snap-fit ​​post 35. The fixing plate 36 is used to provide a fixing medium for the rotating disk.

[0036] The locking block assembly 34 includes a third spring 49, a lifting rod 46, an insert rod 45, a telescopic block 40, a sliding rod 43, and a second spring 44. The lifting rod 46 passes through and is slidably connected to two rectangular through holes 61. The lifting rod 46 is used to lift the insert rod 45. The insert rod 45 is fixedly connected to the center of the bottom of the lifting rod 46. The insert rod 45 is used to insert between the two telescopic blocks 40 and separate the two telescopic blocks 40. The insert 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 keep 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 that 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. The two telescopic blocks 40 can extend and retract within the side walls and the bottom groove 39.

[0037] Two telescopic blocks 40 are symmetrically arranged, meaning that telescopic movement occurs simultaneously. A connecting block is provided in the bottom groove 39, which fixes the center of the slide rod 43 in the bottom groove 39, thus fixing the center of the second spring 44 together with the center of the slide rod 43. Each telescopic block 40 has a first through hole 42. The second spring 44 is fixedly connected between the two telescopic blocks 40, and the slide rod 43 is provided between the two telescopic blocks 40. When the telescopic blocks 40 are squeezed by the insertion rod 45, the two telescopic blocks 40 will retract and move closer to each other. The two ends of the slide rod 43 extend into the two first through holes 42 respectively and slide therewith. The slide rod 43 passes through the second spring 44 and slides therewith. The center of the slide rod 43 and the second spring 44 are fixed, and the spring cannot slide freely on the slide rod 43. Only the two ends of the spring can slide independently on the slide rod 43.

[0038] The bottom of the insertion rod 45 is provided with a second slide rail 47, which is used to avoid the slide rod 43 and the second spring 44, so as to ensure that when the insertion rod 45 separates the two telescopic blocks 40, it will not touch the slide rod 43 and the second spring 44. The bottom of the two side walls of the second slide rail 47 are fixedly connected with conical heads 48. The bottom of the conical heads 48 is pointed, which can separate the two telescopic blocks 40. The bottom of the fixing plate 36 is equipped with a fixing clip 37, which can fix the rotating plate 57. The top of the fixing clip 37 extends into one of the second through holes 58, thus fixing the rotating plate 57. The rotating shaft 62 extends into the fixed plate 36 and is rotatably connected to it. The long shaft 60 passes through the top wall of the bottom groove 39 and the fixed plate 36 and is rotatably connected to both. The rotating shaft 62 and the long shaft 60 simultaneously act as bearings for the rotating plate 57, allowing the rotating plate 57 to rotate smoothly. The long shaft 60 passes through the third spring 49 and is slidably connected to it. The long shaft 60 provides the extension and retraction direction for the third spring 49, making it less prone to tilting. The long shaft 60 passes through the lifting rod 46, extends into the top of the insertion rod 45, and is rotatably connected to both. In this way, when the lifting rod 46 is lifted to compress the third spring 49, it will not affect the rotation of the long shaft 60.

[0039] In actual use, first snap the snap-fit ​​component 33 into the rectangular slot 25. When you see the lifting rod 46 fall to the lower surface of the rectangular through hole 61, the snap-fit ​​is successful. Then select the direction and fix it by rotating the rotating plate 57 and then fixing it with the fixing clip 37. Then move the clip rod 50 and rotate the lifting pin 53 and locking pin 54 as needed to fix the object to be milled. Example 4

[0040] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 Based on Embodiment 3, the upper surface of the fixing plate 19 is provided with a plurality of symmetrical first slots 20. The first slots 20 are used to fix the feeding plate 23. The feeding plate 23 is provided with first sliding grooves 29 on both sides. A cut 27 is provided at the bottom of one end of the first sliding groove 29. The width of the cut 27 is slightly larger than the width of the card plate 32. A second slot 28 is provided at the bottom of the other end of the first sliding groove 29. The second slot 28 is used to place the card plate 32 when the feeding plate 23 is not fixed.

[0041] The positioning device 26 includes a lever 30, a connecting rod 31, and a locking plate 32. The connecting rod 31 passes through the side wall of the first slide groove 29 and is slidably connected to it. The connecting rod 31 extends into the first slide groove 29. The lever 30 is fixedly connected to one end of the connecting rod 31, making it easy to move. The locking plate 32 is fixedly connected to the other end of the lever 30. The locking plate 32 is used to lock into the cut 27 and the first locking groove 20, so that the feeding plate 23 cannot slide on the fixed plate 19. The locking plate 32 is slidably connected to the first slide groove 29 and also slidably connected to the cut 27. The locking plate 32 is respectively connected to the cut 27, the second locking groove 28, and the first locking groove. The device features 20 phase-adaptation and multiple second slots 28 to provide more position options. The clamping device 2 includes a gantry column 5, which serves as the main support column and is fixedly mounted on the upper surface of the base plate 1. A drive device 4 is installed on the gantry column 5, which can provide power to certain components. A rotating device 6 is slidably mounted on one side of the gantry column 5, which can select the cutting angle of the milling cutter. A swing arm 7 is mounted on the rotating device 6, which makes the device more flexible. A milling cutter assembly 8 is mounted on the swing arm 7, and the milling cutter assembly 8 has its own drive device 4 inside, which allows the milling cutter to cut and move quickly.

[0042] In actual use, when it is necessary to place an object, the feeding plate 23 can be pulled out, so that the object can be placed in a certain position on the feeding plate 23. After the object is fixed, push the handle 22 to push the feeding plate 23 to a certain position and then use the fixing device to fix it. The feeding plate 23 can be fixed on the fixing plate 19. Then the milling cutter can be started for processing. One end or 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. In this way, the object can be firmly fixed. The fixing clamping mechanism 24 can be installed on all four sides of the object. If one is not enough, multiple can be set. When the clamping component 33 needs to be clamped in the rectangular clamping slot 25, the clamping is successful when the lifting rod 46 falls to the lower surface of the rectangular through hole 61. Then select the direction and fix it by rotating the rotating plate 57 and then fixing it by the fixing clip 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.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-beam, multi-stage spindle gantry boring and milling machine, comprising: The base plate (1) is characterized in that: a clamping device (2) is provided on the upper surface of the base plate (1), and a gantry boring and milling cutter mechanism (3) is provided on both sides of the clamping device (2). The clamping device (2) includes a fixing plate (19), a feeding plate (23) and a clamping mechanism (24). The fixing plate (19) is fixedly installed on the upper surface of the base plate (1). A first slide rail (21) is provided on the top of the fixing plate (19). The bottom of the feeding plate (23) extends into the first slide rail (21) and is slidably connected to it. The clamping mechanism (24) is provided on the upper surface of the feeding plate (23). The clamping mechanism (24) includes a clamping rod (50), a lifting plate (59), a clamping plate (55), locking pins (54), lifting pins (53), a rotating plate (57), and a snap-fit ​​assembly (33). The snap-fit ​​assembly (33) is mounted on the feeding plate (23), the rotating plate (57) is mounted on the snap-fit ​​assembly (33), and the lifting plate (59) is mounted on the rotating plate (57). A protrusion (52) is provided on one side of the lifting plate (59). A second sliding groove (56) is provided on the upper surface of the lifting plate (59). The clamping plate (55) is slidably connected in the second sliding groove (56). Both locking pins (54) penetrate the clamping plate (55) and are slidably connected to it. One end of each locking pin (54) extends into the protrusion. The block (52) is threadedly connected to it. The clamping rod (50) is set between the clamping plate (55) and the protruding block (52). The side of the clamping rod (50) is provided with a third slide (51). Each locking pin (54) passes through the third slide (51) and is slidably connected to it. The lifting pin (53) is installed at the four corners of the lifting plate (59). Each lifting pin (53) passes through the lifting plate (59) and is rotatably connected to it. One end of each lifting pin (53) passes through the rotating plate (57) and is threadedly connected to it. 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 shaft (60). The rotating plate (57) is provided with a second through hole (58) around its perimeter.

2. The multi-beam multi-stage spindle gantry boring and milling machine according to claim 1, characterized in that: A handle (22) is fixedly installed at one end of the feeding plate (23), and multiple rectangular slots (25) are evenly opened on the top of the feeding plate (23). Positioning devices (26) are provided in the inner side walls of both sides of the feeding plate (23).

3. The multi-beam multi-stage spindle gantry boring and milling machine according to claim 2, characterized in that: The snap-fit ​​assembly (33) includes a snap-fit ​​post (35), a snap-fit ​​block assembly (34), and a fixing plate (36). The snap-fit ​​post (35) extends into the rectangular snap-fit ​​groove (25) and is slidably connected to it. A bottom groove (39) is provided at the bottom of the snap-fit ​​post (35). Rectangular through holes (61) are provided on the two side walls at the top of the bottom groove (39). The snap-fit ​​block assembly (34) is disposed in the bottom groove (39). The fixing plate (36) is fixedly installed on the top of the snap-fit ​​post (35).

4. The multi-beam multi-stage spindle gantry boring and milling machine according to claim 3, characterized in that: The locking block assembly (34) includes a third spring (49), a lifting rod (46), an insert rod (45), a telescopic block (40), a sliding rod (43), and a second spring (44). The lifting rod (46) passes through and is slidably connected to the two rectangular through holes (61). The insert rod (45) is fixedly connected to the center of the bottom of the lifting rod (46) and 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 slidably connected to the bottom groove (39). 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 telescopic block (40) has a first through hole (42). A second spring (44) is fixedly connected between the two telescopic blocks (40). A slide rod (43) is provided between the two telescopic blocks. The two ends of the slide rod (43) extend into the two first through holes (42) and are slidably connected to them. The slide rod (43) passes through the second spring (44) and is slidably connected to it.

5. A multi-beam, multi-stage spindle gantry boring and milling machine according to claim 4, characterized in that: The bottom of the insertion rod (45) is provided with a second slide (47), and the bottom of the two side walls of the second slide (47) are fixedly connected with conical heads (48).

6. A multi-beam multi-stage spindle gantry boring and milling machine according to claim 5, characterized in that: The bottom of the fixed plate (36) is equipped with a fixing clip (37), the top of the fixing clip (37) extends into one of the second through holes (58), the rotating shaft (62) extends into the fixed plate (36) and is rotatably connected to it, the long shaft (60) passes through the top wall of the bottom groove (39) and the fixed plate (36) and is rotatably connected to both of them, the long shaft (60) passes through the third spring (49) and is slidably connected to it, the long shaft (60) passes through the lifting rod (46) and extends into the top of the insertion rod (45) and is rotatably connected to both of them.

7. A multi-beam multi-stage spindle gantry boring and milling machine according to claim 6, characterized in that: The upper surface of the fixing plate (19) is provided with a plurality of symmetrical first slots (20), and the two sides of the feeding plate (23) are provided with first sliding grooves (29). A cut (27) is provided at the bottom of one end of the first sliding groove (29), and a second slot (28) is provided at the bottom of the other end of the first sliding groove (29). The positioning device (26) includes a handle (30), a connecting rod (31) and a locking plate (32). The connecting rod (31) passes through the side wall of the first sliding groove (29) and is slidably connected to it. The handle (30) is fixedly connected to one end of the connecting rod (31), and the locking plate (32) is fixedly connected to the other end of the handle (30). The locking plate (32) is slidably connected to the first sliding groove (29), and the locking plate (32) is adapted to the cut (27), the second slot (28) and the first slot (20) respectively.

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

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