Multi-drill-bit drilling and milling integrated machine tool

Abstract

The invention relates to the technical field of drilling and milling integrated beds, and discloses a multi-drill-bit drilling and milling integrated bed which comprises a machine tool body, a transmission box moving up and down along with a main shaft is arranged at one end of the machine tool body, and two movable boxes and a fixed box are arranged at the bottom of the transmission box. Mounting heads driven by a main shaft to rotate through a power conveying assembly are arranged on the outer walls of the bottoms of one ends of the movable box and the fixed box correspondingly, two guide frames are fixed to the outer wall of the bottom of the transmission box through bolts, and first sliding frames and second sliding frames are slidably connected to the outer walls of the circumferences of the two guide frames correspondingly; according to the multifunctional drilling machine, through cooperation of the multiple assemblies, the functions of multi-drill-bit drilling, drilling of different hole distances, automatic workpiece position changing, automatic workpiece moving position adjusting according to the hole distances and the like can be achieved, multiple functions are integrated, and the equipment integration degree is high.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling and milling integrated machines, and specifically provides a multi-bit drilling and milling integrated machine. Background Art

[0002] The drilling and milling integrated machine, also known as a drill milling machine, is a multi-functional machine that integrates drilling and milling functions. It is applicable to fields such as small part processing, mold manufacturing, and model making, supports hole pitch processing, and is suitable for materials such as metal, wood, and plastic.

[0003] After retrieval, the Chinese patent with the publication number CN211387649U discloses a drill milling integrated machine with high processing efficiency. Through a series of mechanical structures, this device can process multiple surfaces, saving time costs. However, there are still the following problems: 1. Each time it drills, it can only process a single hole, while some workpieces need to process multiple holes on the same plane, resulting in low processing efficiency. 2. When multiple holes need to be processed, it is necessary to change the clamping position of the workpiece. The processing of multiple holes requires multiple adjustments, resulting in low efficiency in adjusting the horizontal position of the workpiece. 3. When multiple holes are processed simultaneously, due to different hole pitches between workpieces, multiple different connectors for installing drills are required, resulting in high costs invested by the factory. Summary of the Invention

[0004] Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a multi-bit drilling and milling integrated machine, mainly to solve the problems that each time it drills, it can only process a single hole, while some workpieces need to process multiple holes on the same plane, resulting in low processing efficiency, and when multiple holes are processed simultaneously, due to different hole pitches between workpieces, multiple different connectors for installing drills are required, resulting in high costs invested by the factory.

[0005] Technical Solutions To achieve the above object, the present invention provides the following technical solutions: A multi-bit drill and mill integrated machine, including a machine tool body. One end of the machine tool body is provided with a transmission box that moves up and down following the main shaft. The bottom of the transmission box is provided with two movable boxes and a fixed box. The outer walls of the bottoms of one ends of the movable boxes and the fixed box are both provided with mounting heads that are driven to rotate by the main shaft through a power transmission component. The outer wall of the bottom of the transmission box is fixed with two guide frames by bolts. The circumferential outer walls of the two guide frames are both slidably connected with a first sliding frame and a second sliding frame. The bottom of the transmission box is provided with an adjusting component that drives the two movable boxes and the fixed box to rotate synchronously. The inner wall of the bottom of the transmission box is provided with a distance adjusting component for adjusting the distance between the movable box and the fixed box. A placement table for placing workpieces is provided on the workbench of the machine tool body. A placement groove is opened on one side of the placement table. The inner walls of both sides of the placement groove are fixed with multi-section guide rails by bolts. One end of the multi-section guide rails is fixed with a baffle by bolts. A pulling component for pulling the baffle to move is provided in the placement groove. An extrusion component for fixing the workpiece is provided on one side of the placement table.

[0006] Further, the power transmission component includes two second pulleys and a tension pulley arranged on the inner wall of the top of the transmission box. The tension pulley and the second pulley are connected by a transmission belt and form a square. Two avoidance grooves are opened at the bottom of the transmission box. The top of one end of the movable box passes through the avoidance groove and is fixed with a first pulley by a shaft, and the first pulley is in contact with the transmission belt. Belt pulley sets fixed to the first pulley and the second pulley are respectively arranged in the two movable boxes and the fixed box, and the other ends of the belt pulley sets are fixed to the mounting head by a shaft.

[0007] On the basis of the foregoing solution, the adjusting component includes a first pull rod rotatably connected to the fixed box at both ends of the first sliding frame. Second pull rods rotatably connected to the movable box are rotatably connected to both ends of the second sliding frame. The bottom of the transmission box is provided with a fixing component for limiting the distance between the first sliding frame and the second sliding frame.

[0008] As a further solution of the present invention, the fixing component includes a mounting frame fixed on the first sliding frame and passing through the second sliding frame. Two guide holes are opened at the top of the second sliding frame. A threaded rod is rotatably connected to the bottom of the second sliding frame. A push frame is threadedly connected to the circumferential outer side of the threaded rod, and rubber blocks are bonded to both ends of the push frame inserted into the guide holes. Two clamping blocks are slidably connected to both sides of the second sliding frame. An elastic plate is welded between the two clamping blocks. Inclined surfaces are opened on the opposite sides of the plurality of clamping blocks. An extrusion rod is integrally formed on the inner wall of the bottom of the push frame, and the extrusion rod can be in contact with the inclined surface.

[0009] Further, the distance adjustment component includes a first lead screw rotatably mounted on the inner wall of one side of the transmission box. A slide plate that rotates with the two movable boxes is threadedly connected to the outer circumferential wall of the first lead screw. A first gear is key-connected to the outer circumferential wall of one end of the first lead screw. Two fixing blocks are welded to the bottom outer wall of the transmission box. A rotating frame is rotatably connected between the two fixing blocks. A second gear that meshes with the first gear is key-connected to the outer circumferential wall of one end of the rotating frame. A second lead screw that passes through the second slide frame and is threadedly connected to the second slide frame is slidably connected to the outer circumference of the rotating frame. Both ends of the second lead screw are rotatably connected to sliders, and a resistance increasing mechanism for increasing the friction between the slider and the transmission box is provided on the top of the slider.

[0010] On the basis of the foregoing solution, the resistance increasing mechanism includes a chute opened on the top of the slider. A friction block is slidably connected in the chute. A spring is bonded to the bottom of the friction block, and the other end of the spring is fixed to the bottom of the chute.

[0011] As a further solution of the present invention, the pulling component includes a placement groove opened on one side of the placement table. A rotating groove is opened at the bottom of the placement groove. A winding roller is rotatably connected in the rotating groove. A pull rope fixed to the baffle is wound around the outer circumference of the winding roller. A transmission component for making the winding roller rotate unidirectionally is provided on one side of the placement table.

[0012] Further, the transmission component includes a ratchet wheel that rotates coaxially with the winding roller. A limiting frame is fixed to one side of the placement table by bolts. An annular frame is rotatably connected to the outer circumferential wall of the limiting frame. A toothed ring is fixed to the outer circumferential wall of the annular frame by bolts. A third gear that meshes with the toothed ring is rotatably connected to one side of the placement table. A pushing component for driving the third gear to rotate is provided on one side of the transmission box. A rotating shaft is fixed by threads between the inner walls on both sides of the annular frame. A pawl is sleeved on the outer circumference of the rotating shaft. A coil spring is fixed to one side of the pawl by a clamping groove, and the other end of the coil spring is fixed to the annular frame.

[0013] On the basis of the foregoing solution, the pushing component includes a fixing frame fixed to one side of the transmission box. A fixing rod is fixed to the bottom of the first slide frame by bolts. A force arm is rotatably connected to the top of one end of the fixing rod. The other end of the force arm is rotatably connected to a connecting rod. A guiding groove for the fixing frame to slide in is opened on one side of the connecting rod. A rack is welded to the bottom of the connecting rod, and the rack can be in contact with the third gear.

[0014] As a further solution of the present invention, the extrusion component includes a jack opened on one side of the placement table. A plug frame is slidably connected in the jack. A push plate is fixed to one end of the plug frame by bolts. A tension spring fixed to the placement table is fixed to the inner wall on one side of the plug frame.

[0015] Beneficial effects Compared with the prior art, the present invention provides a multi-bit drill and mill integrated machine, which has the following beneficial effects: 1. Through the cooperation of multiple components, the present invention can realize functions such as multi-bit drilling, drilling with different hole pitches, automatic workpiece replacement, and automatic adjustment of the workpiece moving position according to the hole pitch. It integrates multiple functions, has a high degree of equipment integration, and is convenient to use.

[0016] 2. Through the setting of the tensioning wheel, no matter how the first pulley moves longitudinally, the drive belt can still be closely attached to the first pulley and the second pulley, enabling the main shaft to drive the mounting head and the drill bit to rotate together, improving the transmission stability of the device.

[0017] 3. By providing an adjustment component, the present invention can not only adjust the lateral distance between the drill bits but also separately adjust the drill bits on the movable box and the fixed box, further improving the applicability of the device.

[0018] 4. By providing a fixing component, the present invention can fix between the second carriage and the mounting frame or between the first carriage and the second carriage, and adjust the fixing or non-fixing of the second carriage according to requirements, improving the multi-adjustability of the device.

[0019] 5. By providing a distance adjustment component, the present invention enables the second carriage and the movable box to synchronously change their longitudinal positions without changing the angle of the movable box, eliminating the need for separate adjustments of the second carriage and the movable box multiple times, and improving the convenience of longitudinal adjustment of the movable box.

[0020] 6. By providing a resistance increasing mechanism, the present invention increases the friction between the slider and the transmission box, preventing the slider and the second lead screw from moving due to the rotation of the second lead screw, and improving the adjustment accuracy of the device.

[0021] 7. By providing a pulling component, the present invention can adjust the workpiece without manually adjusting the workpiece position, improving the labor-saving effect of the device.

[0022] 8. By providing a transmission component, the present invention achieves the purpose that the counterclockwise rotation of the gear ring can drive the ratchet to rotate, while the clockwise rotation cannot drive the ratchet to rotate, thereby realizing the one-way rotation of the winding roller, ensuring that the winding roller does not unwind while winding, and improving the smooth operation of the device.

[0023] 9. By providing a pushing component, the present invention enables the moving distance of the baffle to be the same as the distance of the adjusted first carriage, improving the accuracy of cooperation between the devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front-side three-dimensional structural schematic diagram of a multi-bit drill and mill integrated machine proposed by the present invention; Figure 2Schematic diagram of the rear three-dimensional structure of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 3 Schematic diagram of the enlarged structure of the transmission box of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 4 Schematic diagram of the sectional structure of the transmission box of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 5 Schematic diagram of the sectional structure of the movable box of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 6 Schematic diagram of the sectional structure of the slider of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 7 Schematic diagram of the enlarged structure of the mounting rack of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 8 Schematic diagram of the sectional structure of the second sliding rack of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 9 Schematic diagram of the sectional structure of the placement table of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 10 Schematic diagram of the enlarged structure of the gear ring of a multi-bit drilling and milling integrated machine proposed by the present invention; Figure 11 Schematic diagram of the sectional structure of the gear ring of a multi-bit drilling and milling integrated machine proposed by the present invention.

[0025] In the figure: 1, machine tool body; 2, transmission box; 3, placement table; 4, avoidance groove; 5, movable box; 6, fixed box; 7, fixed rack; 8, force arm; 9, connecting rod; 10, rack; 11, guide groove; 12, fixed rod; 13, first sliding rack; 14, second sliding rack; 15, first lead screw; 16, tension pulley; 17, first belt pulley; 18, second belt pulley; 19, sliding plate; 20, fixed block; 21, guide frame; 22, belt pulley group; 23, first pull rod; 24, second pull rod; 25, mounting head; 26, rotating frame; 27, slider; 28, chute; 29, second lead screw; 30, first gear; 31, second gear; 32, spring; 33, friction block; 34, mounting rack; 35, guide hole; 36, clamping block; 37, elastic plate; 38, inclined plane; 39, rubber block; 40, pushing frame; 41, extrusion rod; 42, threaded rod; 43, pushing plate; 44, inserting rack; 45, inserting hole; 46, winding roller; 47, pulling rope; 48, multi-section guide rail; 49, pulling spring; 50, placement groove; 51, rotating groove; 52, ratchet; 53, annular frame; 54, gear ring; 55, third gear; 56, limiting frame; 57, ratchet pawl; 58, winding spring; 59, rotating shaft; 60, baffle. Detailed implementation mode

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The serial numbers assigned to the components in this document itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" as used in the present invention, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] Refer to Figures 1-11, A multi-bit drill-milling integrated machine tool, comprising a machine tool body 1. At one end of the machine tool body 1, there is a transmission box 2 that moves up and down following the main shaft. At the bottom of the transmission box 2, there are two movable boxes 5 and a fixed box 6. On the bottom outer walls at one end of the movable box 5 and the fixed box 6, there are mounting heads 25 that are driven to rotate by the main shaft through a power transmission component. On the bottom outer wall of the transmission box 2, two guide frames 21 are fixed by bolts. On the circumferential outer walls of the two guide frames 21, a first sliding frame 13 and a second sliding frame 14 are slidably connected respectively. At the bottom of the transmission box 2, there is an adjusting component that drives the two movable boxes 5 and the fixed box 6 to rotate synchronously. On the bottom inner wall of the transmission box 2, there is a distance-adjusting component for adjusting the distance between the movable box 5 and the fixed box 6. On the workbench of the machine tool body 1, there is a placement table 3 for placing workpieces. On one side of the placement table 3, there is a placement groove 50. On both inner walls of the placement groove 50, multi-section guide rails 48 are fixed by bolts. One end of the multi-section guide rails 48 is fixed with a baffle 60 by bolts. Inside the placement groove 50, there is a pulling component for pulling the baffle 60 to move. On one side of the placement table 3, there is a pressing component for fixing the workpiece. During use, pull the baffle 60 to make the multi-section guide rails 48 longer. Place the workpiece on the placement table 3 and make one end of the workpiece contact the baffle 60. Use the pressing component to fix the workpiece. According to the required processing dimensions, use the distance-adjusting component and the adjusting component to change the distance between multiple mounting heads 25. Install the corresponding drill bits on the mounting heads 25. Then start the machine tool body 1, so that the main shaft of the machine tool body 1 drives the mounting heads 25 and the drill bits to rotate through the power transmission component. Rotate the feed handle on the machine tool body 1 to make the transmission box 2 and the drill bits descend synchronously, thereby realizing rough machining of the workpiece. After drilling, use the pulling component to drive the baffle 60 to push the workpiece to change its position. Among them, the workpieces to be processed are mainly tubular or strip-shaped, not suitable for processing special-shaped workpieces. Multiple drill bits can drill multiple holes simultaneously, improving the processing efficiency of the machine tool. At the same time, without manually adjusting the position of the workpiece during processing, automatic replacement of the workpiece can be realized, and the distance between the drill bits can be adjusted to realize processing of workpieces with different hole distances, reducing the input cost of the factory.

[0030] In order to drive the installation head 25 and the drill bit to rotate, in the present invention, the power transmission assembly includes two second pulleys 18 and a tension pulley 16 arranged on the inner wall of the top of the transmission box 2. The tension pulley 16 and the second pulley 18 are connected by a transmission belt and form a square. Two avoidance grooves 4 are opened at the bottom of the transmission box 2. The top of one end of the movable box 5 passes through the avoidance groove 4 and is fixed with a first pulley 17 through a shaft, and the first pulley 17 is in contact with the transmission belt. Belt pulley sets 22 fixed to the first pulley 17 and the second pulley 18 are respectively arranged in the two movable boxes 5 and the fixed box 6, and the other end of the belt pulley set 22 is fixed to the installation head 25 through a shaft. A pulley is fixed at the connection head of the main shaft of the machine tool body 1, and the pulley drives the transmission belt to rotate, thereby driving the first pulley 17 and the second pulley 18 to rotate. Due to the presence of the tension pulley 16, no matter how the first pulley 17 moves horizontally, the transmission belt can still be closely attached to the first pulley 17 and the second pulley 18, enabling the main shaft to drive the first pulley 17 and the second pulley 18 to rotate. The first pulley 17 and the second pulley 18 can both drive one end of the belt pulley set 22 rotating coaxially with them to rotate, thereby driving the installation head 25 and the drill bit to rotate together, improving the transmission stability of the device.

[0031] In order to change the lateral distance between the drill bits located on the movable box 5 and the fixed box 6, in the present invention, the adjustment assembly includes first pull rods 23 arranged at both ends of the first slide carriage 13 and rotatably connected to the fixed box 6. Second pull rods 24 rotatably connected to the movable box 5 are rotatably connected to both ends of the second slide carriage 14. A fixing assembly for limiting the distance between the first slide carriage 13 and the second slide carriage 14 is arranged at the bottom of the transmission box 2. Unlock the fixing of the second slide carriage 14 by the fixing assembly, and respectively pull the first slide carriage 13 and the second slide carriage 14. The movable box 5 and the fixed box 6 can be driven to rotate through the first pull rod 23 and the second pull rod 24, so that the lateral distance between the drill bits is changed. Use the fixing assembly to fix the second slide carriage 14, and thereby fix the first slide carriage 13, so as to fix the position of the drill bit. It can not only adjust the distance between the horizontal drill bits, but also separately adjust the drill bits located on the movable box 5 and the fixed box 6, further improving the applicability of the device.

[0032] In order to achieve the fixation between the second carriage 14 and the mounting bracket 34 or between the first carriage 13 and the second carriage 14, in the present invention, the fixing assembly includes a mounting bracket 34 that is fixed to the first carriage 13 and passes through the second carriage 14. Two guiding holes 35 are provided at the top of the second carriage 14. A threaded rod 42 is rotatably connected to the bottom of the second carriage 14. A pushing frame 40 is threadedly connected to the outer circumference of the threaded rod 42. Rubber blocks 39 are bonded to both ends of the pushing frame 40 inserted into the guiding holes 35. Two clamping blocks 36 are slidably connected to both sides of the second carriage 14. An elastic plate 37 is welded between the two clamping blocks 36. Inclined surfaces 38 are provided on the opposite sides of the plurality of clamping blocks 36. An extrusion rod 41 is integrally formed on the bottom inner wall of the pushing frame 40, and the extrusion rod 41 can contact the inclined surface 38. By rotating the threaded rod 42, the threaded rod 42 will drive the pushing frame 40 to move upward in the guiding hole 35. At the same time, the extrusion rod 41 will extrude the inclined surface 38, causing the clamping blocks 36 to clamp the mounting bracket 34, thereby fixing the second carriage 14 and the mounting bracket 34. At this time, pulling the first carriage 13 or the second carriage 14 can pull the two to move simultaneously, causing the movable box 5 and the fixed box 6 to rotate synchronously, and further enabling the drill bits located thereon to maintain the same longitudinal distance. When the pushing frame 40 moves upward, the extrusion rod 41 will disengage from the inclined surface 38. At this time, the rubber blocks 39 at both ends of the pushing frame 40 will contact the bottom outer wall of the transmission box 2. The pushing frame 40 continues to move upward, causing the rubber blocks 39 to deform, thereby increasing the frictional force between the rubber blocks 39 and the transmission box 2 and fixing the positions of the first carriage 13 and the second carriage 14, improving the multi-adjustability of the device.

[0033] In order to change the longitudinal distance between the movable box 5 and the fixed box 6, in the present invention, the distance adjustment assembly includes a first lead screw 15 rotatably mounted on the inner wall of one side of the transmission box 2. A slide plate 19 that rotates with the two movable boxes 5 is threadedly connected to the circumferential outer wall of the first lead screw 15. A first gear 30 is key-connected to the circumferential outer wall of one end of the first lead screw 15. Two fixed blocks 20 are welded to the bottom outer wall of the transmission box 2. A rotating frame 26 is rotatably connected between the two fixed blocks 20. A second gear 31 that meshes with the first gear 30 is key-connected to the circumferential outer wall of one end of the rotating frame 26. A second lead screw 29 that passes through the second slide carriage 14 and is threadedly connected to the second slide carriage 14 is slidably connected to the circumferential outer side of the rotating frame 26. The pitch of the first lead screw 15 is the same as that of the second lead screw 29. Both ends of the second lead screw 29 are rotatably connected to a slider 27. A resistance increasing mechanism for increasing the friction between the slider 27 and the transmission box 2 is provided on the top of the slider 27. By rotating the first lead screw 15, the slide plate 19 drives the two movable boxes 5 to move in the avoidance groove 4, thereby changing the position of the movable box 5. At the same time, the rotation of the first lead screw 15 drives the first gear 30 to rotate, thereby driving the second gear 31 and the rotating frame 26 to rotate, and further driving the second lead screw 29 to rotate. Through the limitation of the second lead screw 29 by the resistance increasing mechanism, the second slide carriage 14 moves on the second lead screw 29, thereby synchronously changing the longitudinal position of the second slide carriage 14 and the movable box 5 without changing the angle of the movable box 5. Without separately adjusting the second slide carriage 14 and the movable box 5 multiple times, the position of the drill bit at one end of the movable box 5 can be determined, improving the convenience of longitudinal adjustment of the movable box 5.

[0034] In order to prevent the second slide carriage 14 from moving in the reverse direction, in the present invention, the resistance increasing mechanism includes a chute 28 opened on the top of the slider 27. A friction block 33 is slidably connected in the chute 28. A spring 32 is adhesively bonded to the bottom of the friction block 33, and the other end of the spring 32 is fixed to the bottom of the chute 28. When the spring 32 is located in the chute 28, it is in a compressed state and has a certain elastic force, which will squeeze the friction block 33 to move towards the transmission box 2, so that the friction block 33 always has a force applied to the transmission box 2, increasing the friction between the slider 27 and the transmission box 2, so that the slider 27 and the second lead screw 29 will not move due to the rotation of the second lead screw 29, improving the adjustment accuracy of the device.

[0035] In order to realize pulling the workpiece to move, in the present invention, the pulling assembly includes a placement groove 50 opened on one side of the placement table 3. A rotating groove 51 is opened at the bottom of the placement groove 50. A winding roller 46 is rotatably connected in the rotating groove 51. A pulling rope 47 fixed to the baffle 60 is wound around the circumferential outer side of the winding roller 46. A transmission assembly for unidirectionally rotating the winding roller 46 is provided on one side of the placement table 3. The transmission assembly drives the winding roller 46 to rotate unidirectionally, so as to realize winding the pulling rope 47 on the winding roller 46, and further pull the baffle 60 and the workpiece to move horizontally. Without manually adjusting the position of the workpiece, the adjustment of the workpiece can be realized, and the labor-saving effect of the device is improved.

[0036] In order to realize unidirectionally driving the winding roller 46 to rotate, in the present invention, the transmission assembly includes a ratchet wheel 52 rotatably connected to the winding roller 46. A limiting frame 56 is fixed to one side of the placement table 3 by bolts. An annular frame 53 is rotatably connected to the circumferential outer wall of the limiting frame 56. A toothed ring 54 is fixed to the circumferential outer wall of the annular frame 53 by bolts. A third gear 55 meshing with the toothed ring 54 is rotatably connected to one side of the placement table 3. The diameter of the third gear 55 is much larger than the diameter of the toothed ring 54, which can increase the angular velocity of the toothed ring 54. A pushing assembly for driving the third gear 55 to rotate is provided on one side of the transmission box 2. A rotating shaft 59 is fixed between the two inner walls of the annular frame 53 by threads. A pawl 57 is sleeved on the circumferential outer side of the rotating shaft 59. One side of the pawl 57 is fixed with a coil spring 58 through a clamping groove, and the other end of the coil spring 58 is fixed to the annular frame 53. Through the setting of the ratchet wheel 52 and the pawl 57, the purpose that the counterclockwise rotation of the toothed ring 54 can drive the ratchet wheel 52 to rotate and the clockwise rotation cannot drive the ratchet wheel 52 to rotate is realized, so as to realize the unidirectional rotation of the winding roller 46. Through the pushing assembly, the third gear 55 can be driven to rotate clockwise, so as to drive the toothed ring 54 to rotate counterclockwise, so that the winding roller 46 will not unwind while winding, and the running fluency of the device is improved.

[0037] To achieve the rotation of the third gear 55, in the present invention, the pushing assembly includes a fixing frame 7 fixed to one side of the transmission box 2. A fixing rod 12 is fixed to the bottom of the first sliding frame 13 by bolts. The top of one end of the fixing rod 12 is rotatably connected to a lever arm 8. The other end of the lever arm 8 is rotatably connected to a connecting rod 9. A guiding groove 11 for the fixing frame 7 to slide therein is provided on one side of the connecting rod 9. A rack 10 is welded to the bottom of the connecting rod 9, and the rack 10 is meshed with the third gear 55. During the movement of the first sliding frame 13, the fixing rod 12 will be pulled to move, thereby squeezing one end of the lever arm 8, causing the other end of the lever arm 8 to drive the connecting rod 9 to slide on the fixing frame 7, so that the rack 10 moves upward, changing the distance between the rack 10 and the third gear 55. During the downward movement of the transmission box 2, the rack 10 will move downward. After the rack 10 is meshed with the third gear 55, it will drive the third gear 55 to rotate. By changing the distance between the rack 10 and the third gear 55, since the downward movement distance of the transmission box 2 is fixed, the rotation angle of the third gear 55 is changed, and then the number of turns of the winding roller 46 is changed, so that the moving distance of the baffle 60 can be the same as the adjusted distance of the first sliding frame 13, improving the accuracy of the cooperation between devices.

[0038] To achieve the fixation of the workpiece, in the present invention, the extrusion assembly includes a jack 45 opened on one side of the placement table 3. A plug frame 44 is slidably connected in the jack 45. One end of the plug frame 44 is fixed with a push plate 43 by bolts. A tension spring 49 fixed to the placement table 3 is fixed to the inner wall of one side of the plug frame 44 by bolts. Pull the plug frame 44 outward, and the plug frame 44 drives the push plate 43 to move, so that the tension spring 49 deforms to generate a pulling force. Place the workpiece between the push plate 43 and the limiting plate on the top side of the placement table 3. Release the plug frame 44, and the tension spring 49 pulls the plug frame 44 to move into the jack 45, thereby clamping and fixing the workpiece, improving the stability during workpiece processing.

[0039] The present invention is used in the following steps: S1: Pull the baffle 60 to make the multi-section guide rail 48 longer. Place the workpiece on the placement table 3 and make one end of the workpiece contact the baffle 60. Pull the plug frame 44 outward. The plug frame 44 drives the push plate 43 to move, so that the tension spring 49 deforms to generate a pulling force. Place the workpiece between the push plate 43 and the limiting plate on the top side of the placement table 3. Release the plug frame 44, and the tension spring 49 pulls the plug frame 44 to move into the jack 45, thereby clamping and fixing the workpiece; S2: Adjust the distance between the drill bits according to the required processing dimensions; S3: Pull the first sliding frame 13 and the second sliding frame 14 respectively. Through the first pull rod 23 and the second pull rod 24, the movable box 5 and the fixed box 6 can be driven to rotate, so that the lateral distance between the drill bits is changed, and a trapezoid can be formed between the four drill bits; S4: Rotate the threaded rod 42. The threaded rod 42 will drive the pushing frame 40 to move upward in the guiding hole 35. At the same time, the extrusion rod 41 will extrude the inclined surface 38, causing the clamping block 36 to clamp the mounting frame 34, so that the second carriage 14 and the mounting frame 34 are fixed. At this time, pulling the first carriage 13 or the second carriage 14 can pull the two to move simultaneously, enabling the movable box 5 and the fixed box 6 to rotate synchronously, and further enabling the drill bit located thereon to maintain the same longitudinal distance. S5: Rotate the first lead screw 15, so that the sliding plate 19 drives the two movable boxes 5 to move in the avoidance groove 4, thereby changing the position of the movable box 5. At the same time, the rotation of the first lead screw 15 will drive the first gear 30 to rotate, thereby driving the second gear 31 and the rotating frame 26 to rotate, and further driving the second lead screw 29 to rotate. S6: Since the spring 32 is in a compressed state when located in the sliding groove 28 and has a certain elastic force, it will squeeze the friction block 33 towards the transmission box 2, causing the friction block 33 to always have a force exerted on the transmission box 2, increasing the friction between the slider 27 and the transmission box 2, so that the slider 27 and the second lead screw 29 will not move due to the rotation of the second lead screw 29. Therefore, the rotation of the second lead screw 29 can enable the second carriage 14 to move on the second lead screw 29, and further enable the second carriage 14 and the movable box 5 to synchronously change the longitudinal position without changing the angle of the movable box 5. S7: Continue to rotate the threaded rod 42, and then the pushing frame 40 will continue to move upward, causing the extrusion rod 41 to disengage from the inclined surface 38. At this time, the rubber blocks 39 at both ends of the pushing frame 40 will contact the bottom outer wall of the transmission box 2. The pushing frame 40 continues to move upward, causing the rubber blocks 39 to deform, thereby increasing the friction between the rubber blocks 39 and the transmission box 2 and fixing the positions of the first carriage 13 and the second carriage 14. S8: At the same time, during the movement of the first carriage 13, it will pull the fixed rod 12 to move, thereby squeezing one end of the force arm 8, causing the other end of the force arm 8 to drive the connecting rod 9 to slide on the fixed frame 7, so that the rack 10 moves upward, changing the distance between the rack 10 and the third gear 55. Since the downward movement distance of the transmission box 2 is fixed, the rotation angle of the third gear 55 is changed, and further the number of turns of the winding roller 46 is changed, so that the moving distance of the baffle 60 can be the same as the adjusted distance of the first carriage 13. S9: Start the machine tool body 1. A pulley is fixed at the spindle connector of the machine tool body 1. The pulley drives the transmission belt to rotate, thereby driving the first pulley 17 and the second pulley 18 to rotate. Due to the existence of the tension pulley 16, no matter how the first pulley 17 moves horizontally, the transmission belt can still be in close contact with the first pulley 17 and the second pulley 18, enabling the spindle to drive the first pulley 17 and the second pulley 18 to rotate. The first pulley 17 and the second pulley 18 can both drive one end of the pulley set 22 rotating coaxially with them to rotate, thereby driving the mounting head 25 and the drill bit to rotate together. By rotating the feed handle on the machine tool body 1, the transmission box 2 and the drill bit are lowered synchronously, thereby performing drilling on the workpiece; S10: During the downward movement of the transmission box 2, the rack 10 will move downward. After the rack 10 meshes with the third gear 55, it will drive the third gear 55 to rotate counterclockwise, thereby driving the gear ring 54 to rotate clockwise. Due to the setting of the ratchet 52 and the pawl 57, the clockwise rotation of the gear ring 54 will not drive the ratchet 52 to rotate, and thus cannot drive the winding roller 46 to rotate; S11: After the processing is completed, the upward movement of the transmission box 2 will drive the third gear 55 to rotate clockwise, thereby driving the gear ring 54 to rotate counterclockwise. The counterclockwise rotation of the gear ring 54 can drive the ratchet 52 to rotate, thereby driving the winding roller 46 to rotate, realizing the winding of the pulling rope 47 on the winding roller 46, and further pulling the baffle 60 and the workpiece to move horizontally. Without manually adjusting the position of the workpiece, the adjustment of the workpiece can be achieved; S12: And it can process multiple hole positions at one time, and can adjust the distance between the hole positions according to requirements. Without preparing multiple transmission boxes 2, the multifunction can be realized, reducing the use cost of the factory.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0041] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A multi-drill-bit drilling and milling machine, comprising a machine tool body (1), characterized in that: One end of the machine tool body (1) is provided with a transmission box (2) that moves up and down following the main shaft, and the bottom of the transmission box (2) is provided with two movable boxes (5) and a fixed box (6), and the bottom outer walls of one end of the movable box (5) and the fixed box (6) are provided with a mounting head (25) that is driven to rotate by the main shaft through a power transmission component, and the bottom outer wall of the transmission box (2) is fixedly connected to two guide frames (21), and the circumferential outer walls of the two guide frames (21) are slidably connected to a first slide (13) and a second slide (14), and the bottom of the transmission box (2) is provided with a drive for driving the two movable boxes (5) and the fixed box (6) to move synchronously. A rotating adjustment component is provided on the bottom inner wall of the transmission box (2) for adjusting the distance between the movable box (5) and the fixed box (6); a placement table (3) for placing workpieces is provided on the workbench of the machine tool body (1); a placement groove (50) is provided on one side of the placement table (3); both inner walls of the placement groove (50) are fixedly connected to a multi-section guide rail (48); one end of the multi-section guide rail (48) is fixedly connected to a baffle (60); a pulling component for pulling the baffle (60) to move is provided in the placement groove (50); and a pressing component for fixing the workpiece is provided on one side of the placement table (3).

2. The multi-drill bit drilling and milling machine according to claim 1, characterized in that: The power transmission assembly comprises two second pulleys (18) and a tensioning wheel (16) arranged on the inner wall of the top of the transmission box (2); the tensioning wheel (16) and the second pulley (18) are connected by a transmission belt and form a square; two avoidance grooves (4) are provided at the bottom of the transmission box (2); a first pulley (17) is fixed to the top of one end of the movable box (5) through the avoidance groove (4) via a shaft, and the first pulley (17) is in contact with the transmission belt; pulley groups (22) fixed to the first pulley (17) and the second pulley (18) are respectively provided in the two movable boxes (5) and the fixed box (6); and the other end of the pulley group (22) is fixed to the mounting head (25) via a shaft.

3. The multi-drill bit drilling and milling machine according to claim 1, characterized in that: The adjustment assembly comprises first pull rods (23) arranged at both ends of the first slide (13) and rotatably connected to the fixed box (6); both ends of the second slide (14) are rotatably connected to second pull rods (24) rotatably connected to the movable box (5); and a fixing assembly for limiting the distance between the first slide (13) and the second slide (14) is provided at the bottom of the transmission box (2).

4. The multi-drill bit drilling and milling machine according to claim 3, characterized in that: The fixing assembly comprises a mounting frame (34) fixed on the first slide (13) and passing through the second slide (14); two guide holes (35) are provided on the top of the second slide (14); a threaded rod (42) is rotatably connected to the bottom of the second slide (14); a push frame (40) is threadedly connected to the outer circumferential side of the threaded rod (42); and both ends of the push frame (40) inserted into the guide hole (35) are fixedly connected to rubber blocks (39); two clamping blocks (36) are slidably connected to both sides of the second slide (14); an elastic plate (37) is fixedly connected between the two clamping blocks (36); inclined surfaces (38) are provided on opposite sides of the plurality of clamping blocks (36); and an extrusion rod (41) is integrally formed on the inner wall of the bottom of the push frame (40), and the extrusion rod (41) is contactable with the inclined surface (38).

5. The multi-drill-bit integrated drilling and milling machine according to claim 1, characterized in that: The pitch adjustment assembly comprises a first screw rod (15) rotating on an inner wall of one side of a transmission box (2); a slide plate (19) rotating with two movable boxes (5) is threadedly connected to the circumferential outer wall of the first screw rod (15); a first gear (30) is keyed to the circumferential outer wall at one end of the first screw rod (15); two fixed blocks (20) are fixedly connected to the bottom outer wall of the transmission box (2); a rotating frame (26) is rotatably connected between the two fixed blocks (20); a second gear (31) meshing with the first gear (30) is keyed to the circumferential outer wall at one end of the rotating frame (26); a second screw rod (29) passing through a second slide plate (14) and threadedly connected to the second slide plate (14) is slidably connected to the circumferential outer side of the rotating frame (26); sliders (27) are rotatably connected to both ends of the second screw rod (29); and a resistance increasing mechanism for increasing the friction between the slider (27) and the transmission box (2) is provided at the top of the slider (27).

6. The multi-drill bit drilling and milling machine according to claim 5, characterized in that: The resistance increasing mechanism comprises a slide groove (28) provided at the top of the slider (27), a friction block (33) being slidably connected in the slide groove (28), a spring (32) being fixedly connected to the bottom of the friction block (33), and the other end of the spring (32) being fixed to the bottom of the slide groove (28).

7. The multi-drill bit drilling and milling machine according to claim 1, characterized in that: The pulling assembly comprises a placement groove (50) provided on one side of the placement platform (3), a rotation groove (51) provided at the bottom of the placement groove (50), a winding roller (46) rotatably connected in the rotation groove (51), a pulling rope (47) fixed to a baffle (60) being wound around the outer side of the circumference of the winding roller (46), and a transmission assembly for causing the winding roller (46) to rotate in one direction being provided on one side of the placement platform (3).

8. The multi-drill-bit integrated drilling and milling machine according to claim 7, characterized in that: The transmission assembly comprises a ratchet wheel (52) which rotates in conjunction with the winding roller (46); a limiting frame (56) is fixedly connected to one side of the placement platform (3); a ring frame (53) is rotatably connected to the circumferential outer wall of the limiting frame (56); a gear ring (54) is fixedly connected to the circumferential outer wall of the ring frame (53); a third gear (55) which meshes with the gear ring (54) is rotatably connected to one side of the placement platform (3); a pushing assembly which drives the third gear (55) to rotate is provided on one side of the transmission box (2); a rotating shaft (59) is fixedly connected between the inner walls of both sides of the ring frame (53); a ratchet (57) is sleeved on the circumferential outer side of the rotating shaft (59); a coil spring (58) is fixedly connected to one side of the ratchet (57); and the other end of the coil spring (58) is fixed to the ring frame (53).

9. The multi-drill bit drilling and milling machine according to claim 8, characterized in that: The pushing assembly comprises a fixed frame (7) fixed to one side of the transmission box (2); a fixed rod (12) is fixedly connected to the bottom of the first slide frame (13); a top of one end of the fixed rod (12) is rotatably connected to a force arm (8); the other end of the force arm (8) is rotatably connected to a connecting rod (9); a guide groove (11) in which the fixed frame (7) slides is provided on one side of the connecting rod (9); a rack (10) is fixedly connected to the bottom of the connecting rod (9), and the rack (10) is contactable with the third gear (55).

10. The multi-drill-bit integrated drilling and milling machine according to claim 1, characterized in that: The extrusion assembly comprises a socket (45) provided on one side of the placement table (3), a socket frame (44) being slidably connected in the socket (45), a push plate (43) being fixedly connected to one end of the socket frame (44), and a tension spring (49) fixed to the placement table (3) being fixedly connected to an inner wall of one side of the socket frame (44).

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