Numerical control milling and boring machine with rotary workbench structure

Abstract

The invention relates to the technical field of machine tool machining, and discloses a numerical control milling and boring machine with a rotary worktable structure, which comprises a base, a rotary table is rotatably arranged at the top of the base, a plurality of T-shaped grooves are fixedly formed in the top of the rotary table, and cleaning assemblies are arranged at the bottoms of the T-shaped grooves; the two first synchronous wheels rotate to drive the first synchronous belt to rotate, so that the scraping rod on the outer ring of the first synchronous belt moves in the channel to move from the position, close to the circle center of the rotating table, of the T-shaped groove to the position, located on the outer side of the rotating table, of the T-shaped groove, and then returns to the path in the channel for forward rotation; according to the T-shaped groove cleaning device, the T-shaped grooves are arranged, so that chippings at the bottoms of the T-shaped grooves can be conveniently pushed out of the T-shaped grooves to be cleaned, and the problems that manual cleaning of a large number of T-shaped grooves is troublesome, and the burden on operators is large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool processing, and specifically relates to a numerically controlled milling and boring machine with a rotary table structure. Background Art

[0002] In the technical field of machine tool processing, a rotary table is a main accessory of milling machines such as floor boring machines, boring and milling machines, and face milling machines, which is used to support workpieces and drive the workpieces to perform linear feed motion or rotary motion, thus facilitating the processing of workpieces. Existing multi-axis milling machines usually adopt the structure of a rotary table to increase the number of their processing axes and improve the complexity of workpieces that can be processed, so as to meet the requirements of the intelligent manufacturing equipment industry for processing complexity.

[0003] During numerical control machine tool processing, it is usually necessary to regularly clean the debris on the worktable to avoid accelerating equipment wear. Some hard debris (such as metal chips) will scratch the worktable, and if too much debris accumulates, it may affect the installation of clamping tooling and may also hinder the flow of cutting fluid, affecting heat dissipation and chip removal efficiency. Existing automatic chip removal devices of machine tools are usually arranged under the worktable to discharge the chips that have fallen from the worktable. For the chips on the surface of the worktable, they are usually cleared by sweeping with a hand-held air gun. However, for the chips in the T-shaped grooves on the table for installing fixture tooling, they cannot be cleared by the method of sweeping with a hand-held air gun. Usually, it is necessary to insert a hand-held air gun into the T-shaped grooves for cleaning. Since the number of T-shaped grooves is large, it is more troublesome to perform manual cleaning, and it places a greater burden on operators during large-scale processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a numerically controlled milling and boring machine with a rotary table structure to solve the above problems, and to overcome the defects of the prior art, as described in detail below.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A numerically controlled milling and boring machine with a rotary table structure provided by the present invention includes a base, a rotary table is rotatably arranged on the top of the base, a plurality of T-shaped grooves are fixedly opened on the top of the rotary table, and cleaning components are arranged at the bottoms of the plurality of T-shaped grooves for cleaning the T-shaped grooves; A rotary mechanism is arranged inside the base for driving the rotary table to rotate; Lubricating mechanisms are arranged on both sides of the inner wall of the base for lubricating the rotary mechanism; The cleaning component includes a groove, which is opened below the T-slot position corresponding to the rotating table. A first synchronous belt is arranged for rotation inside the groove. Two first synchronous wheels for transmission are arranged inside the first synchronous belt. A scraper rod is hinged on the outer ring of the first synchronous belt, and a torsion spring for resetting is arranged at the connection between the scraper rod and the first synchronous belt.

[0006] Preferably, a scraper block is provided on the inner wall of the groove, and an inner lining block is fixedly connected to the inner wall of the groove at a position in the gap between the first synchronous belt and the two first synchronous wheels.

[0007] Preferably, a support column is fixedly connected to the center of the bottom of the inner wall of the base, the outer wall of the support column is fixed with a first fixed ratchet, and the outer wall of the support column is fixed with a second fixed ratchet above the first fixed ratchet, the second fixed ratchet has an opposite transmission direction to the first fixed ratchet, and the base is provided with several groups of changing direction gear groups for driving the first synchronous wheel in the corresponding position cleaning assembly to rotate.

[0008] Preferably, the direction-changing gear set includes a first movable ratchet, which is unidirectionally meshed with a first fixed ratchet, and the first movable ratchet is fixedly connected to a first synchronous wheel at a corresponding position via an output rod.

[0009] Preferably, the direction-changing gear set also includes a second movable ratchet, which is unidirectionally meshed with the second fixed ratchet and rotatably connected to the bottom of the rotating table. The surface of the second movable ratchet and the outer wall of the output rod are respectively fixedly connected with a first gear, and the two first gears are meshed with each other.

[0010] Preferably, a plurality of push blocks are fixedly connected to the outer wall of the rotating table and are distributed in a circular array, a plurality of the push blocks are in contact with the top of the base, and a plurality of the push blocks are staggered with the T-slots.

[0011] Preferably, the rotating mechanism comprises a support ring, which is fixedly connected to the bottom of the inner wall of the base, and a sleeve ring is fixedly connected to the bottom of the rotating table, and the sleeve ring is rotatably mounted on the outer wall of the support ring through a cross roller bearing.

[0012] Preferably, the rotating mechanism also includes a plurality of rollers, which are distributed in a circular array on the outer wall of the ring. Worms are rotatably connected to the two sides of the base, and the directions of the vortices on the outer walls of the two worms are opposite. The worms are meshed with the rollers on the outer wall of the ring. The inner wall of the base is rotatably connected to two second gears, and the two second gears are meshed with each other. The two second gears are respectively connected to the worms at corresponding positions through two second synchronous wheels and a second synchronous belt. The outer wall of the base is connected to a servo motor for driving one of the second gears to rotate.

[0013] Preferably, the lubrication mechanism includes two pressurized chambers which are respectively fixedly connected to both sides of the bottom inner wall of the base, and a filter plate is fixedly connected to the inner wall of the base.

[0014] Preferably, a piston block is slidably connected to the inner wall of the pressurized chamber, and the piston block extends above the filter plate. A spring for resetting is fixedly connected to the bottom of the piston block. Cam members are respectively fixedly connected to the two ends of the worm corresponding to the positions of the piston blocks for pressing the piston blocks. A plurality of oil inlet holes are formed in the bottom of one side of the pressurized chamber, and one-way valves are arranged inside the plurality of oil inlet holes. The one-way valves only allow the medium to flow into the pressurized chamber from the oil inlet holes unidirectionally. A plurality of drip tubes are fixedly connected to the bottom of one side of the pressurized chamber, and the plurality of drip tubes extend above the worm, and drip holes are formed in the drip tubes corresponding to the top of the worm.

[0015] The beneficial effects are as follows: First, in the present invention, the rotation of two first synchronous wheels drives the rotation of the first synchronous belt, so that the scraping rod on the outer ring of the first synchronous belt moves in the channel, and moves from the position of the T-shaped groove close to the center of the rotating table to the position of the T-shaped groove outside the rotating table and then back into the channel in a positive rotation mode, so as to facilitate pushing the debris at the bottom of the T-shaped groove out of the T-shaped groove for cleaning, avoiding the problem that it is more troublesome to manually clean a large number of T-shaped grooves and the burden on the operator is relatively large.

[0016] Second, in the present invention, by arranging a direction-changing gear set, the scraping rod can generate power for cleaning by means of the rotation of the rotating table during the processing. Under the action of the transmission of the direction-changing gear set, no matter whether the rotating table rotates clockwise or counterclockwise, the scraping rod drives the scraping rod to move in a positive rotation path for cleaning, so as to ensure the cleaning effect and avoid the situation that the scraping rod rotates reversely and pushes the debris into the T-shaped groove.

[0017] Third, when the rotating table needs to rotate and change the angle, the rotating table can be driven to rotate for angle adjustment by the rollers meshed with the two side worms. Moreover, the cooperation of the worm and the roller can also bear a relatively large radial force, so that the rotating table has a high load capacity. And by adopting the method of driving both sides simultaneously, it can better disperse the driving, improve the control precision of rotation, and reduce the wear of a single worm and extend the service life.

[0018] IV. In the present invention, a lubrication mechanism is provided inside the base. Each time the worm drives, it will drive the cam sleeved on the outer wall of the worm to rotate. When the cam rotates, it repeatedly presses the piston block below. When the pressed piston block sinks in the pressure chamber, it will squeeze the lubricating oil in the pressure chamber, causing it to enter the drip oil pipe and drip onto the worm from the drip holes of the drip oil pipe above the worm for lubrication, so as to reduce the friction between the worm and the roller, make the rotation smoother, reduce wear, and extend their service life. And because each time the worm drives, it will drive the cam to press, so that lubricating oil will drip for lubrication each time, and take away the heat generated by friction, preventing the temperature from being too high and affecting the performance of the parts. Moreover, the flowing lubricating oil can maintain a good state and extend the service time of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a schematic structural diagram of the overall appearance of the present invention; Figure 2 is a schematic structural diagram of the base in the present invention; Figure 3 is a partial cross-sectional view of the base in the present invention; Figure 4 is a partial cross-sectional view of the pressure chamber in the present invention; Figure 5 is a schematic structural diagram of the rotation mechanism in the present invention; Figure 6 is a schematic structural diagram of the rotating table in the present invention; Figure 7 is a schematic structural diagram of the direction-changing gear set in the present invention; Figure 8 is a schematic structural diagram of the cleaning assembly in the present invention.

[0021] The description of the reference numerals is as follows: 1. Base; 11. Support column; 12. Support ring; 13. Crossed roller bearing; 14. Cam; 15. Pressurizing chamber; 151. Piston block; 152. Spring; 153. Oil inlet hole; 154. Drip oil pipe; 16. Filter plate; 2. Rotary table; 21. T-shaped groove; 211. Channel; 212. First synchronous belt; 213. First synchronous pulley; 214. Lining block; 215. Scraping block; 216. Scraping rod; 22. Collar; 221. Roller; 222. Worm; 223. Second gear; 224. Second synchronous pulley; 225. Second synchronous belt; 226. Servo motor; 231. First fixed ratchet; 232. Second fixed ratchet; 233. First moving ratchet; 234. Output rod; 235. Second moving ratchet; 236. First gear; 24. Pushing block. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope protected by the present invention.

[0023] See Figures 1-8 As shown, the present invention provides a numerically controlled milling and boring machine with a rotary table structure, including a base 1. A rotary table 2 is rotatably arranged on the top of the base 1. A plurality of T-shaped grooves 21 are fixedly formed on the top of the rotary table 2, and a cleaning assembly is arranged at the bottom of each of the plurality of T-shaped grooves 21 for cleaning the T-shaped grooves 21. A rotating mechanism is arranged inside the base 1 for driving the rotary table 2 to rotate. Lubricating mechanisms are arranged on both sides of the inner wall of the base 1 for lubricating the rotating mechanism. The cleaning assembly includes a channel 211 (such as Figure 8As shown in the figure, the chute 211 is opened below the position of the rotating table 2 corresponding to the T-shaped groove 21. A first synchronous belt 212 is rotatably arranged inside the chute 211. Two first synchronous wheels 213 for transmission are arranged inside the first synchronous belt 212. The outer ring of the first synchronous belt 212 is hinged with a scraping rod 216, and a torsion spring for resetting is arranged at the connection between the scraping rod 216 and the first synchronous belt 212. By arranging a cleaning component inside the T-shaped groove 21, when it is necessary to clean the debris in the T-shaped groove 21 on the rotating table 2, the two first synchronous wheels 213 rotate to drive the first synchronous belt 212 to rotate, so that the scraping rod 216 on the outer ring of the first synchronous belt 212 moves inside the chute 211, moving from the position of the T-shaped groove 21 close to the center of the rotating table 2 to the position of the T-shaped groove 21 on the outer side of the rotating table 2 and then back into the chute 211 in a forward rotation manner, so as to facilitate pushing the debris at the bottom of the T-shaped groove 21 out of the T-shaped groove 21 for cleaning, avoiding the problem that it is more troublesome to clean a large number of T-shaped grooves 21 manually and the burden on the operator is relatively large. And by arranging a torsion spring at the connection between the scraping rod 216 and the first synchronous belt 212, when the scraping rod 216 contacts the connecting piece of the fixture arranged in the T-shaped groove 21, the squeezed scraping rod 216 will overcome the elasticity of the torsion spring, rotate and change the angle to stagger the connecting piece of the fixture, and continue to move, avoiding the problem that the movement of the scraping rod 216 is affected when there is a fixture connected on the rotating table 2.

[0024] In this embodiment, please refer to Figure 8 , a scraping block 215 is arranged on the inner wall of the chute 211. By arranging the scraping block 215, some debris adhered to the scraping rod 216 can be scraped off in cooperation with the chute 211 when the scraping rod 216 returns to the chute 211 again, avoiding the debris from entering the chute 211 and accumulating in the chute 211. A lining block 214 is fixedly connected to the position of the inner wall of the chute 211 at the gap between the first synchronous belt 212 and the two first synchronous wheels 213. By arranging the lining block 214, the deformation of the first synchronous belt 212 can be prevented, avoiding the situation that the scraping rod 216 cannot clean effectively due to the first synchronous belt 212.

[0025] Furthermore, please refer to Figure 2 , Figure 6 , Figure 7 , Figure 8, a support column 11 is fixedly connected to the center of the bottom inner wall of the base 1. A first fixed ratchet wheel 231 is fixedly sleeved on the outer wall of the support column 11. A second fixed ratchet wheel 232 is fixedly sleeved on the outer wall of the support column 11 at a position above the first fixed ratchet wheel 231. The transmission direction of the second fixed ratchet wheel 232 is opposite to that of the first fixed ratchet wheel 231. The base 1 is provided with a plurality of groups of direction-changing gear sets for driving the first synchronous wheel 213 in the cleaning assembly at the corresponding position to rotate. The direction-changing gear set includes a first moving ratchet wheel 233. The first moving ratchet wheel 233 is unidirectionally meshed with the first fixed ratchet wheel 231. The first moving ratchet wheel 233 is fixedly connected to the first synchronous wheel 213 at the corresponding position through an output rod 234. The direction-changing gear set further includes a second moving ratchet wheel 235. The second moving ratchet wheel 235 is unidirectionally meshed with the second fixed ratchet wheel 232. And the second moving ratchet wheel 235 is rotatably connected to the bottom of the rotating table 2. First gears 236 are respectively fixedly connected to the surface of the second moving ratchet wheel 235 and the outer wall of the output rod 234. And the two first gears 236 are meshed with each other. By arranging the first fixed ratchet wheel 231 and the second fixed ratchet wheel 232 on the outer wall of the support column 11 of the base 1, when the rotating table 2 rotates clockwise (refer to Figure 7 ), the first moving ratchet wheel 233 displaces relative to the first fixed ratchet wheel 231. The first moving ratchet wheel 233 rotates around the first fixed ratchet wheel 231. And under the meshing action of the first fixed ratchet wheel 231 and the first moving ratchet wheel 233, it rotates self. Thus, the first gear 236 is driven to rotate through the output rod 234. And under the transmission of the two first gears 236, the scraping rod 216 on the first synchronous belt 212 rotates forward. When the rotating table 2 rotates counterclockwise (refer to Figure 7 ), the first moving ratchet wheel 233 disengages from the first fixed ratchet wheel 231. At this time, the second moving ratchet wheel 235 displaces relative to the second fixed ratchet wheel 232. The second moving ratchet wheel 235 rotates around the second fixed ratchet wheel 232. And under the meshing action of the second moving ratchet wheel 235 and the second fixed ratchet wheel 232, the second moving ratchet wheel 235 rotates self to drive the first gear 236 to rotate. Through the meshing of the two first gears 236, the power is transmitted to the output rod 234 and the rotation mode is changed. So that the scraping rod 216 on the first synchronous belt 212 connected to the output rod 234 always moves along a forward rotation path to drive the scraping rod 216 to move for cleaning. By such a setting, when the rotating table 2 rotates, the generated power can be converted into the moving power of the scraping rod 216, so that the scraping rod 216 can utilize the power generated when the rotating table 2 rotates during the processing for cleaning.

[0026] Furthermore, please refer to Figure 1A plurality of push blocks 24 are fixedly connected to the outer wall of the rotary table 2 and are distributed in a circular array. A plurality of push blocks 24 are in contact with the top of the base 1, and a plurality of push blocks 24 are staggered with the T-slots 21. By arranging the push blocks 24 on the rotary table 2, the push blocks 24 can be driven to rotate when the rotary table 2 rotates, and the T-slots 21 can be used to discharge the chips that fall on the top of the base 1, and further push the chips to the outside of the base 1 and fall onto the automatic chip removal mechanism of the machine tool below for chip removal.

[0027] Also, see Figure 2 , Figure 6 The rotating mechanism includes a support ring 12, which is fixedly connected to the bottom of the inner wall of the base 1. A collar 22 is fixedly connected to the bottom of the rotating table 2. The collar 22 is rotatably sleeved on the outer wall of the support ring 12 through a cross roller bearing 13. The support ring 12 and the collar 22 are arranged with the same center to facilitate the connection between the base 1 and the rotating table 2, and a cross roller bearing 13 is arranged between the support ring 12 and the collar 22. The cross roller bearing 13 can withstand large radial loads, axial loads, moment loads and other loads in all directions to meet the load requirements of the machine tool under complex working conditions and improve the processing accuracy.

[0028] In addition, see Figure 5 , Figure 6 The rotating mechanism also includes a plurality of rollers 221, which are distributed in an annular array on the outer wall of the collar 22. Worms 222 are rotatably connected to the two sides of the base 1, and the outer wall vortices of the two worms 222 are in opposite directions. The worms 222 are meshed with the rollers 221 on the outer wall of the collar 22. The inner wall of the base 1 is rotatably connected to two second gears 223, and the two second gears 223 are meshed with each other. The two second gears 223 are respectively connected to the worms 222 at the corresponding positions through two second synchronous wheels 224 and a second synchronous belt 225. The outer wall of the base 1 is connected to a servo motor 226 for driving one of the second gears 223 to rotate. When the rotating platform 2 needs to rotate to change the angle, the servo motor 226 is started to drive one of the second gears 223. 23 rotates, and since the two second gears 223 are meshed with each other, the two second gears 223 rotate in opposite directions, and are driven by the two second synchronous wheels 224 and the second synchronous belt 225 connected to each other to drive the worms 222 on both sides to rotate, and the meshed rollers 221 push the rotating table 2 above the collar 22 to rotate for angle adjustment. The worm 222 transmission method can achieve a relatively large reduction ratio, so that the speed of the rotating table 2 slows down and the torque increases, making the operation more stable and the positioning more accurate. The cooperation between the worm 222 and the roller 221 can also withstand a relatively large radial force, so that the rotating table 2 has a higher load capacity. In addition, the method of driving both sides at the same time can better disperse the drive, improve the control rotation accuracy, and reduce the wear of a single worm 222, thereby extending the service life.

[0029] It should be noted that, please refer to Figure 3 , Figure 4 , Figure 5 , the lubrication mechanism includes two groups of pressure chambers 15, the two groups of pressure chambers 15 are respectively fixedly connected to both sides of the bottom of the inner wall of the base 1, a filter plate 16 is fixedly connected to the inner wall of the base 1, a piston block 151 is slidably connected to the inner wall of the pressure chamber 15, and the piston block 151 extends above the filter plate 16. A spring 152 for resetting is fixedly connected to the bottom of the piston block 151. Cam 14 is fixedly connected to both ends of the worm 222 corresponding to the position of the piston block 151 for pressing the piston block 151. A plurality of oil inlet holes 153 are opened at the bottom of one side of the pressure chamber 15. Check valves are arranged inside the plurality of oil inlet holes 153, and the check valves only allow the medium to flow into the pressure chamber 15 from the oil inlet holes 153 unidirectionally. A plurality of drip tubes 154 are fixedly connected to the bottom of one side of the pressure chamber 15, and the plurality of drip tubes 154 extend above the worm 222, and drip holes are opened at the positions of the drip tubes 154 corresponding to the top of the worm 222. By arranging the lubrication mechanism inside the base 1, every time the worm 222 drives, the cam 14 sleeved on the outer wall of the worm 222 will be driven to rotate. When the cam 14 rotates, it repeatedly presses the piston block 151 below. When the pressed piston block 151 sinks in the pressure chamber 15, it will squeeze the lubricating oil in the pressure chamber 15, so that it enters the drip tube 154 and drips onto the worm 222 from the drip hole of the drip tube 154 above the worm 222 for lubrication, so as to reduce the friction between the worm 222 and the roller 221, make the rotation smoother, reduce wear, and extend their service life. And every time the cam 14 protrudes away from the piston block 151, the tension of the spring 152 will lift the piston block 151 to reset, so that a negative pressure is generated inside the pressure chamber 15 to facilitate sucking the lubricating oil at the bottom of the base 1 into the pressure chamber 15 from the oil inlet hole 153 for replenishment. And because the oil inlet hole 153 is below the filter plate 16, some impurities in the lubricating oil during the circulation process will be filtered by the filter plate 16, avoiding too many impurities in the used lubricating oil and affecting the lubrication effect. And every time the worm 222 drives, it will drive the cam 14 to press, so that lubricating oil will drip for lubrication every time it drives, and take away the heat generated by friction, preventing the temperature from being too high and affecting the performance of the parts. And the flowing lubricating oil can maintain a good state and extend the service time of the lubricating oil.

[0030] Working principle When in use, when the rotating table 2 needs to rotate to change the angle, start the servo motor 226 to drive one of the second gears 223 to rotate. Since the two second gears 223 are meshed with each other, the two second gears 223 rotate in opposite directions, and drive the two worm shafts 222 on both sides to rotate through the transmission of the two second synchronous wheels 224 and the second synchronous belt 225 connected to each of them. The rotating table 2 above the collar 22 is pushed by the meshed roller 221 to rotate for angle adjustment. And when the rotating table 2 rotates clockwise (refer to Figure 7 ), the first moving ratchet wheel 233 is displaced relative to the first fixed ratchet wheel 231, the first moving ratchet wheel 233 rotates around the first fixed ratchet wheel 231, and rotates on its own under the action of the meshing between the first fixed ratchet wheel 231 and the first moving ratchet wheel 233. Thus, the first gear 236 is driven to rotate through the output rod 234, and the scraping rod 216 on the first synchronous belt 212 is driven to rotate forward under the transmission of the two first gears 236. When the rotating table 2 rotates counterclockwise (refer to Figure 7), the first moving ratchet wheel 233 disengages from the first fixed ratchet wheel 231. At this time, the second moving ratchet wheel 235 displaces relative to the second fixed ratchet wheel 232. The second moving ratchet wheel 235 rotates around the second fixed ratchet wheel 232. Under the action of the engagement between the second moving ratchet wheel 235 and the second fixed ratchet wheel 232, the second moving ratchet wheel 235 rotates itself to drive the first gear 236 to rotate. Through the engagement of the two first gears 236, the power is transmitted to the output rod 234 and the rotation mode is changed, so that the first synchronous belt 212 on the first gear 236 connected to the output rod 234 always drives the scraping rod 216 to move along the forward rotation path for cleaning. When cleaning the debris in the T-shaped groove 21, the two first synchronous wheels 213 rotate to drive the first synchronous belt 212 to rotate, so that the scraping rod 216 on the outer ring of the first synchronous belt 212 moves in the groove 211, moving from the position close to the center of the rotating table 2 in the T-shaped groove 21 to the position where the T-shaped groove 21 is outside the rotating table 2, and then returning to the groove 211 in a forward rotation mode, so as to facilitate pushing the debris at the bottom of the T-shaped groove 21 out of the T-shaped groove 21 for cleaning. And in the way of setting a torsion spring at the connection between the scraping rod 216 and the first synchronous belt 212, when the scraping rod 216 touches the connecting piece of the fixture set in the T-shaped groove 21, the squeezed scraping rod 216 will overcome the elasticity of the torsion spring, rotate and change the angle to stagger the connecting piece of the fixture, and continue to move, avoiding the problem that the movement of the scraping rod 216 is affected when there is a fixture connected to the rotating table 2. And by setting a push block 24 on the rotating table 2, the push block 24 can be driven to rotate when the rotating table 2 rotates, and the debris discharged from the T-shaped groove 21 and falling on the top of the base 1 can be further pushed outside the base 1 and fall onto the automatic chip removal mechanism of the machine tool below for chip removal. And every time the worm 222 rotates, it will drive the cam 14 sleeved on the outer wall of the worm 222 to rotate. When the cam 14 rotates, it repeatedly presses the piston block 151 below. When the pressed piston block 151 sinks in the pressure chamber 15, it will squeeze the lubricating oil in the pressure chamber 15, so that it enters the drip oil pipe 154 and drips onto the worm 222 from the drip hole of the drip oil pipe 154 above the worm 222 for lubrication, so as to reduce the friction between the worm 222 and the roller 221, make the rotation smoother, reduce wear, and extend their service life. And every time the cam 14 protrudes away from the piston block 151, the tension of the spring 152 will lift the piston block 151 to reset, making the pressure chamber 15 generate negative pressure inside, so as to facilitate sucking the lubricating oil at the bottom of the base 1 into the pressure chamber 15 through the oil inlet hole 153 for replenishment. And because the oil inlet hole 153 is below the filter plate 16, some impurities in the lubricating oil during the recirculation process will be filtered by the filter plate 16, avoiding too many impurities in the used lubricating oil and affecting the lubrication effect.

[0031] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims described above.

Claims

1. A numerically controlled milling and boring machine with a rotary table structure, characterized in that, It includes a base (1), a rotating table (2) is rotatably arranged on the top of the base (1), a plurality of T-shaped grooves (21) are fixedly opened on the top of the rotating table (2), and cleaning components are arranged at the bottoms of the plurality of T-shaped grooves (21) for cleaning the T-shaped grooves (21); A rotating mechanism is arranged inside the base (1) for driving the rotating table (2) to rotate; Lubricating mechanisms are arranged on both sides of the inner wall of the base (1) for lubricating the rotating mechanism; The cleaning component includes a groove (211), the groove (211) is opened below the position of the rotating table (2) corresponding to the T-shaped groove (21), a first synchronous belt (212) is rotatably arranged inside the groove (211), two first synchronous wheels (213) for transmission are arranged inside the first synchronous belt (212), a scraping rod (216) is hinged to the outer ring of the first synchronous belt (212), and a torsion spring for resetting is arranged at the connection between the scraping rod (216) and the first synchronous belt (212).

2. The numerically controlled milling and boring machine with a rotary table structure according to claim 1, wherein: Scraping blocks (215) are arranged on the inner wall of the groove (211), and lining blocks (214) are fixedly connected to the positions of the inner wall of the groove (211) where there are gaps between the first synchronous belt (212) and the two first synchronous wheels (213).

3. A numerically controlled milling and boring machine with a rotary table structure according to claim 1, characterized in that: A support column (11) is fixedly connected to the center of the bottom of the inner wall of the base (1), a first fixed ratchet wheel (231) is fixedly sleeved on the outer wall of the support column (11), a second fixed ratchet wheel (232) is fixedly sleeved on the outer wall of the support column (11) above the first fixed ratchet wheel (231), the transmission directions of the second fixed ratchet wheel (232) and the first fixed ratchet wheel (231) are opposite, and a plurality of groups of direction-changing gear sets are arranged on the base (1) for driving the first synchronous wheels (213) in the cleaning components at corresponding positions to rotate.

4. The numerically controlled milling and boring machine with a rotary table structure according to claim 3, characterized in that: The direction-changing gear set includes a first moving ratchet wheel (233), the first moving ratchet wheel (233) is unidirectionally engaged with the first fixed ratchet wheel (231), and the first moving ratchet wheel (233) is fixedly connected to the first synchronous wheel (213) at the corresponding position through an output rod (234).

5. The numerically controlled milling and boring machine with a rotary table structure according to claim 4, characterized in that: The direction-changing gear set further includes a second moving ratchet wheel (235), the second moving ratchet wheel (235) is unidirectionally engaged with the second fixed ratchet wheel (232), and the second moving ratchet wheel (235) is rotatably connected to the bottom of the rotating table (2). First gears (236) are fixedly connected to the surfaces of the second moving ratchet wheel (235) and the outer wall of the output rod (234) respectively, and the two first gears (236) are meshed with each other.

6. The numerically controlled milling and boring machine with a rotary table structure according to claim 1, characterized in that: A plurality of pushing blocks (24) are fixedly connected to the outer wall of the rotating table (2), and are distributed in an annular array. The plurality of pushing blocks (24) are in contact with the top of the base (1), and the plurality of pushing blocks (24) are staggered with the T-shaped grooves (21).

7. The numerically controlled milling and boring machine with a rotary table structure according to claim 6, characterized in that: The rotating mechanism includes a support ring (12), the support ring (12) is fixedly connected to the bottom of the inner wall of the base (1), a collar (22) is fixedly connected to the bottom of the rotating table (2), and the collar (22) is rotatably sleeved on the outer wall of the support ring (12) through a crossed roller bearing (13).

8. The numerically controlled milling and boring machine with a rotary table structure according to claim 7, characterized in that: The rotating mechanism further comprises a plurality of rollers (221), the plurality of rollers (221) being distributed in an annular array on the outer wall of the collar (22); worms (222) are rotatably connected to the two sides of the interior of the base (1), and the outer walls of the two worms (222) swirl in opposite directions; the worms (222) mesh with the rollers (221) on the outer wall of the collar (22); the inner wall of the base (1) is rotatably connected to two second gears (223), and the two second gears (223) mesh with each other; the two second gears (223) are respectively transmission-connected to the worms (222) at corresponding positions via two second synchronous wheels (224) and a second synchronous belt (225); and the outer wall of the base (1) is connected to a servo motor (226) for driving one of the second gears (223) to rotate.

9. The numerically controlled milling and boring machine with a rotary table structure according to claim 8, wherein: The lubrication mechanism comprises two groups of pressurized chambers (15), the two groups of pressurized chambers (15) being fixedly connected to two sides of the bottom of the inner wall of the base (1), respectively, and a filter plate (16) is fixedly connected to the inner wall of the base (1).

10. The numerically controlled milling and boring machine with a rotary table structure according to claim 9, characterized in that: The inner wall of the pressurizing chamber (15) is slidably connected to a piston block (151), and the piston block (151) extends to the top of the filter plate (16). The bottom of the piston block (151) is fixedly connected to a spring (152) for resetting. The two ends of the worm (222) are respectively fixedly connected to positions corresponding to the piston block (151) with cams (14) for pressing the piston block (151). The bottom of one side of the pressurizing chamber (15) is provided with a plurality of oil inlet holes (153), and each of the plurality of oil inlet holes (153) is provided with a one-way valve, and the one-way valve only allows the medium to flow into the pressurizing chamber (15) from the oil inlet hole (153) in one direction. The bottom of one side of the pressurizing chamber (15) is fixedly connected to a plurality of oil dripping pipes (154), and the plurality of oil dripping pipes (154) extend to the top of the worm (222), and the oil dripping pipes (154) are provided with oil dripping holes at positions corresponding to the top of the worm (222).

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