A CNC milling and boring machine with a rotating worktable structure

Abstract

The present invention relates to the field of machine tool processing technology, and discloses a CNC milling and boring machine with a rotary worktable structure, comprising a base, a rotary table is rotatably provided on the top of the base, a plurality of T-slots are opened on the top of the rotary table, and a cleaning assembly is provided at the bottom of the plurality of T-slots. The first synchronous belt is driven to rotate by the rotation of two first synchronous wheels, so that the scraper rod of the outer ring of the first synchronous belt moves in the groove, moves from a position of the T-slot close to the center of the rotary table to a position where the T-slot is outside the rotary table, and then returns to a path in the groove for positive rotation, so as to facilitate pushing debris at the bottom of the T-slot out of the T-slot for cleaning, thereby avoiding the problem that manual cleaning of a large number of T-slots is troublesome and imposes a heavy burden on the operator.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool processing, in particular to a CNC milling and boring machine with a rotary worktable structure. Background Art

[0002] In the field of machine tool processing, a rotary table is a key accessory for milling machines such as floor-standing boring machines, boring-milling machines, and face milling machines. It supports the workpiece and drives it in linear or rotational motion, facilitating machining. Existing multi-axis milling machines typically utilize a rotary table to increase the number of machining axes and the complexity of the workpieces they can process, meeting the demand for machining complexity in the intelligent manufacturing equipment industry.

[0003] In CNC machine tool processing, it is usually necessary to clean the workbench debris regularly to avoid accelerated equipment wear. Some hard debris (such as metal chips) will scratch the workbench, and excessive accumulation of debris may affect the installation of clamping tooling, and may also hinder the flow of cutting fluid, affecting heat dissipation and chip removal efficiency. Existing machine tool automatic chip removal devices are usually arranged under the workbench to discharge the debris that has fallen from the workbench. The debris on the surface of the workbench is usually swept away by a handheld air gun. However, the debris in the T-slot on the table used to install the fixture tooling cannot be cleaned by sweeping with a handheld air gun. It is usually necessary to insert a handheld air gun into the T-slot for cleaning. Due to the large number of T-slots, manual cleaning is more troublesome, and large-scale processing places a greater burden on the operator. Summary of the Invention

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

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The present invention provides a CNC milling and boring machine with a rotary worktable structure, comprising a base, a rotary table rotatably provided on the top of the base, a plurality of T-slots being provided on the top of the rotary table, and a cleaning assembly being provided at the bottom of each of the T-slots for cleaning the T-slots;

[0007] A rotating mechanism is provided inside the base for driving the rotating table to rotate;

[0008] Lubrication mechanisms are provided on both sides of the inner wall of the base for lubricating the rotating mechanism;

[0009] 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 provided at the connection between the scraper rod and the first synchronous belt.

[0010] Preferably, a scraper block is provided on the inner wall of the groove, and a 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.

[0011] Preferably, a support column is fixedly connected to the center of the bottom of the inner wall of the base, and the outer wall fixed sleeve of the support column is provided with a first fixed ratchet, and the outer wall of the support column is located above the first fixed ratchet and is fixed with a second fixed ratchet. The transmission direction of the second fixed ratchet is opposite to that of 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 cleaning assembly at the corresponding position to rotate.

[0012] Preferably, the direction-changing gear set includes a first movable ratchet, which is unidirectionally meshed with the first fixed ratchet, and the first movable ratchet is fixedly connected to the first synchronous wheel at the corresponding position through an output rod.

[0013] Preferably, the direction-changing gear set also includes a second movable ratchet, which is unidirectionally meshed with the second fixed ratchet, and the second movable ratchet is rotatably connected to the bottom of the rotating table, and the surface of the second movable ratchet and the outer wall of the output rod are respectively fixedly connected with the first gear, and the two first gears are meshed with each other.

[0014] 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.

[0015] Preferably, the rotating mechanism includes a support ring, which is fixedly connected to the bottom of the inner wall of the base. The bottom of the rotating table is fixedly connected to a sleeve, which is rotatably mounted on the outer wall of the support ring through a cross roller bearing.

[0016] 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 on both sides of the inside of the base, and the outer walls of the two worms swirl in opposite directions. 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.

[0017] Preferably, the lubrication mechanism includes two groups of pressurized chambers, which are respectively fixedly connected to both sides of the bottom of the inner wall of the base, and the inner wall of the base is fixedly connected with a filter plate.

[0018] Preferably, the inner wall of the pressurizing chamber is slidably connected with a piston block, and the piston block extends to the top of the filter plate, the bottom of the piston block is fixedly connected with a spring for resetting, and the positions of the piston blocks at both ends of the worm are fixedly connected with cams for pressing the piston block, and a plurality of oil inlet holes are provided at the bottom of one side of the pressurizing chamber, and a one-way valve is provided inside the interior of the plurality of oil inlet holes, and the one-way valve only allows the medium to flow into the pressurizing chamber from the oil inlet hole in one direction, and a plurality of oil dripping pipes are fixedly connected to the bottom of one side of the pressurizing chamber, and the plurality of oil dripping pipes extend to the top of the worm, and the oil dripping pipes are provided with oil dripping holes at positions corresponding to the top of the worm.

[0019] The beneficial effects are:

[0020] 1. The present invention drives the first synchronous belt to rotate by rotating the two first synchronous wheels, so that the scraper on the outer ring of the first synchronous belt moves in the groove, from a position where the T-slot is close to the center of the turntable to a position where the T-slot is outside the turntable, and then returns to the groove to rotate forward, so as to facilitate pushing debris at the bottom of the T-slot out of the T-slot for cleaning, thereby avoiding the problem of a large number of T-slots, which is more troublesome when performing manual cleaning and puts a greater burden on the operator.

[0021] 2. The present invention provides a direction-changing gear set so that the scraper rod can generate power for cleaning when the rotary table rotates during the processing process. Under the transmission action of the direction-changing gear set, no matter whether the rotary table rotates clockwise or counterclockwise, the scraper rod is driven to move in the forward rotation path for cleaning, so as to ensure the cleaning effect and avoid the situation where the scraper rod rotates in the opposite direction and pushes the debris into the T-slot.

[0022] 3. When the turntable needs to rotate to change the angle, the present invention can drive the turntable to rotate to adjust the angle through the rollers engaged with the worms on both sides. The cooperation between the worms and the rollers can also withstand relatively large radial forces, making the turntable have a higher load capacity. In addition, the simultaneous driving method on both sides can better disperse the drive, improve the accuracy of controlling the rotation, reduce the wear of the single worm, and extend the service life.

[0023] 4. The present invention provides a lubrication mechanism inside the base. Each time the worm is driven, the cam sleeved on the outer wall of the worm is driven to rotate. When the cam rotates, it repeatedly presses the piston block below. When the pressed piston block sinks in the pressurized chamber, it squeezes the lubricating oil in the pressurized chamber, causing it to enter the oil dripping tube and drip onto the worm from the oil dripping hole above the worm in the oil dripping tube for lubrication, thereby reducing the friction between the worm and the roller, making the rotation smoother, reducing wear and extending their service life. Moreover, since the cam is driven to be pressed each time the worm is driven, lubricating oil drips for lubrication each time it is driven, and takes away the heat generated by friction, preventing excessive temperature from affecting the performance of the parts, and the flowing lubricating oil can maintain a good condition, extending the service life of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the overall appearance of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the base in the present invention;

[0027] Figure 3 is a partial cross-sectional view of the base in the present invention;

[0028] Figure 4 It is a partial cross-sectional view of the pressurized chamber of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the rotating mechanism in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the rotating table in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the direction-changing gear set in the present invention;

[0032] Figure 8 It is a schematic structural diagram of the cleaning component in the present invention.

[0033] The accompanying drawings are marked as follows: 1. base; 11. support column; 12. support ring; 13. cross roller bearing; 14. cam; 15. pressurizing chamber; 151. piston block; 152. spring; 153. oil inlet hole; 154. oil drip pipe; 16. filter plate; 2. rotating table; 21. T-slot; 211. groove; 212. first synchronous belt; 213. first synchronous wheel; 214. liner block; 215. scraper block; 216. scraper rod; 22. collar; 221. roller; 222. worm; 223. second gear; 224. second synchronous wheel; 225. second synchronous belt; 226. servo motor; 231. first fixed ratchet; 232. second fixed ratchet; 233. first movable ratchet; 234. output rod; 235. second movable ratchet; 236. first gear; 24. push block. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0035] See also Figures 1-8 As shown, the present invention provides a CNC milling and boring machine with a rotary worktable structure, comprising a base 1, a rotary table 2 is rotatably provided on the top of the base 1, a plurality of T-slots 21 are provided on the top of the rotary table 2, and a cleaning assembly is provided at the bottom of the plurality of T-slots 21 for cleaning the T-slots 21, a rotating mechanism is provided inside the base 1 for driving the rotary table 2 to rotate, a lubrication mechanism is provided on both sides of the inner wall of the base 1 for lubricating the rotating mechanism, and the cleaning assembly includes a groove 211 (such as Figure 8As shown in FIG, the groove 211 is opened below the position of the T-shaped groove 21 corresponding to the rotary table 2, and a first synchronous belt 212 is provided for rotation inside the groove 211. Two first synchronous wheels 213 for transmission are provided inside the first synchronous belt 212. The outer ring of the first synchronous belt 212 is hinged with a scraper rod 216, and a torsion spring for resetting is provided at the connection between the scraper rod 216 and the first synchronous belt 212. By providing 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 rotary table 2, the two first synchronous wheels 213 rotate to drive the first synchronous belt 212 to rotate, so that the scraper rod 216 on the outer ring of the first synchronous belt 212 moves in the groove 211 to move from the T-shaped groove 21 to the rotary table 2. The center of the circle moves to the position where the T-slot 21 is outside the rotary table 2, and then returns to the path in the groove 211 for forward rotation, so as to facilitate the removal of debris at the bottom of the T-slot 21 from the T-slot 21 for cleaning, thereby avoiding the problem that there are a large number of T-slots 21, which is troublesome and burdensome for the operator when cleaning manually. By setting a torsion spring at the connection between the scraper rod 216 and the first synchronous belt 212, when the scraper rod 216 contacts the connecting piece of the tooling fixture set in the T-slot 21, the squeezed scraper rod 216 will overcome the elasticity of the torsion spring, rotate and change the angle to stagger the connecting piece of the tooling fixture, and continue to move, thereby avoiding the problem that the movement of the scraper rod 216 is affected by the tooling fixture connected to the rotary table 2.

[0036] In this embodiment, please refer to Figure 8 The inner wall of the groove 211 is provided with a scraper block 215. By providing the scraper block 215, when the scraper rod 216 returns to the groove 211, the groove 211 can cooperate with the groove 211 to scrape off some debris adhering to the scraper rod 216, thereby preventing the debris from entering the groove 211 and accumulating in the groove 211. The inner wall of the groove 211 is fixedly connected with an inner lining block 214 at the position of the gap between the first synchronous belt 212 and the two first synchronous wheels 213. By providing the inner lining block 214, the first synchronous belt 212 can be prevented from being deformed, thereby avoiding the situation where the scraper rod 216 is not cleaned in place due to the first synchronous belt 212.

[0037] For further information, see Figure 2 、 Figure 6 、 Figure 7 、 Figure 8The support column 11 is fixedly connected to the center of the bottom of the inner wall of the base 1, and the outer wall of the support column 11 is fixedly sleeved with a first fixed ratchet 231. The outer wall of the support column 11 is fixedly sleeved above the first fixed ratchet 231 and is provided with a second fixed ratchet 232. The transmission direction of the second fixed ratchet 232 is opposite to that of the first fixed ratchet 231. The base 1 is provided with several sets 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 movable ratchet 233, which is unidirectionally meshed with the first fixed ratchet 231. The first movable ratchet 232 is in a direction opposite to that of the first fixed ratchet 231. The output rod 234 is fixedly connected to the first synchronous wheel 213 at the corresponding position. The direction-changing gear set also includes a second movable ratchet 235. The second movable ratchet 235 is unidirectionally meshed with the second fixed ratchet 232. The second movable ratchet 235 is rotatably connected to the bottom of the rotating platform 2. The surface of the second movable ratchet 235 and the outer wall of the output rod 234 are respectively fixedly connected to the first gear 236, and the two first gears 236 are meshed with each other. By arranging the first fixed ratchet 231 and the second fixed ratchet 232 on the outer wall of the support column 11 on the base 1, when the rotating platform 2 rotates clockwise (refer to Figure 7 ), the first movable ratchet 233 is displaced relative to the first fixed ratchet 231, and the first movable ratchet 233 rotates around the first fixed ratchet 231, and rotates on its own under the action of the engagement between the first fixed ratchet 231 and the first movable ratchet 233, thereby driving the first gear 236 to rotate through the output rod 234, and driving the scraper 216 on the first synchronous belt 212 to rotate forward under the transmission of the two first gears 236. When the rotary table 2 rotates counterclockwise (reference Figure 7 ), the first movable ratchet 233 disengages from the first fixed ratchet 231. At this time, the second movable ratchet 235 is displaced relative to the second fixed ratchet 232, and the second movable ratchet 235 rotates around the second fixed ratchet 232. Under the action of the second movable ratchet 235 meshing with the second fixed ratchet 232, the second movable ratchet 235 rotates and drives the first gear 236 to rotate. The power is transmitted to the output rod 234 through the meshing of the two first gears 236 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 scraper rod 216 to move for cleaning in a forward rotation path. Through such an arrangement, the power generated when the turntable 2 rotates can be converted into the moving power of the scraper rod 216, so that the scraper rod 216 can generate power for cleaning when the turntable 2 rotates during the processing process.

[0038] For further information, see Figure 1, a number of push blocks 24 are fixedly connected to the outer wall of the rotary table 2, which are distributed in a ring array. A number of push blocks 24 are in contact with the top of the base 1, and a number 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 are used to discharge the debris that falls on the top of the base 1, and further push them to the outside of the base 1 and fall onto the automatic chip removal mechanism of the machine tool below for chip removal.

[0039] 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 turntable 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 concentric centers to facilitate the connection between the base 1 and the turntable 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.

[0040] 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 on both sides of the inside of the base 1, and the outer walls of the two worms 222 swirl 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 2 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 rotary 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 rotary 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 rotary table 2 has a higher load capacity. In addition, the simultaneous driving method on both sides can better disperse the drive, improve the control rotation accuracy, reduce the wear of the single worm 222, and extend the service life.

[0041] It is worth noting that see Figure 3 、 Figure 4 、 Figure 5 The lubrication mechanism includes two groups of pressurized chambers 15, which are fixedly connected to both sides of the bottom of the inner wall of the base 1. The inner wall of the base 1 is fixedly connected with a filter plate 16. The inner wall of the pressurized chamber 15 is slidably connected with 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 with a spring 152 for resetting. The positions of the piston blocks 151 at both ends of the worm 222 are fixedly connected with cams 14 for pressing the piston blocks 151. A plurality of oil inlet holes 153 are provided at the bottom of one side of the pressurized chamber 15, and a plurality of A one-way valve is provided inside the oil inlet hole 153, and the one-way valve only allows the medium to flow into the pressurized chamber 15 from the oil inlet hole 153 in one direction. A plurality of oil dripping pipes 154 are fixedly connected to the bottom of one side of the pressurized chamber 15, 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 tops of the worm 222. By arranging a lubrication mechanism inside the base 1, each time the worm 222 is driven, the cam 14 provided 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, which is When the pressed piston block 151 sinks in the pressurized chamber 15, it squeezes the lubricating oil in the pressurized chamber 15, causing it to enter the oil dripping pipe 154 and drip onto the worm 222 from the oil dripping hole above the worm 222 of the oil dripping pipe 154 for lubrication, thereby reducing the friction between the worm 222 and the roller 221, making the rotation smoother, reducing wear and extending their service life. In addition, each 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 negative pressure is generated inside the pressurized chamber 15, which is convenient for oil to be discharged from the oil inlet hole. 153 sucks the lubricating oil at the bottom of the base 1 into the pressurized chamber 15 for replenishment, and since the oil inlet hole 153 is below the filter plate 16, some impurities in the circulation process of the lubricating oil will be filtered by the filter plate 16, avoiding excessive impurities in the used lubricating oil, which affects the lubrication effect, and each time the worm 222 is driven, it drives the cam 14 to press, so that each time the transmission is carried out, the lubricating oil will drip for lubrication and take away the heat generated by friction, preventing the performance of the parts from being affected by excessive temperature, and the flowing lubricating oil can maintain a good state, extending the service life of the lubricating oil.

[0042] How it works

[0043] When the rotating platform 2 needs to be rotated to change the angle, the servo motor 226 is started 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 the two second synchronous wheels 224 and the second synchronous belt 225 connected to each other drive the worms 222 on both sides to rotate, and the meshed rollers 221 push the rotating platform 2 above the ring 22 to rotate for angle adjustment, and when the rotating platform 2 rotates clockwise (refer to Figure 7 ), the first movable ratchet 233 is displaced relative to the first fixed ratchet 231, and the first movable ratchet 233 rotates around the first fixed ratchet 231, and rotates on its own under the action of the engagement between the first fixed ratchet 231 and the first movable ratchet 233, thereby driving the first gear 236 to rotate through the output rod 234, and driving the scraper 216 on the first synchronous belt 212 to rotate forward under the transmission of the two first gears 236. When the rotary table 2 rotates counterclockwise (reference Figure 7), the first movable ratchet 233 disengages from the first fixed ratchet 231. At this time, the second movable ratchet 235 is displaced relative to the second fixed ratchet 232. The second movable ratchet 235 rotates around the second fixed ratchet 232, and under the action of the second movable ratchet 235 meshing with the second fixed ratchet 232, the second movable ratchet 235 rotates and drives the first gear 236 to rotate. The two first gears 236 are engaged to transmit power to the output rod 234 and change the rotation mode, so that the first synchronous belt 212 on the first gear 236 connected to the output rod 234 always drives the scraper rod 216 to move in a positive rotation path for cleaning. When cleaning the debris in the T-slot 21, the two first synchronous belts 212 are used to move the scraper rod 216 in a positive rotation path. The rotation of the step wheel 213 drives the first synchronous belt 212 to rotate, so that the scraper rod 216 on the outer ring of the first synchronous belt 212 moves in the groove 211, and moves from the position of the T-shaped groove 21 close to the center of the rotary table 2 to the position where the T-shaped groove 21 is outside the rotary table 2, and then returns to the path in the groove 211 to rotate forward, so as to facilitate the push of debris at the bottom of the T-shaped groove 21 out of the T-shaped groove 21 for cleaning. In addition, a torsion spring is provided at the connection between the scraper rod 216 and the first synchronous belt 212. When the scraper rod 216 contacts the connecting piece of the tooling fixture provided in the T-shaped groove 21, the squeezed scraper rod 216 will overcome the elasticity of the torsion spring, rotate and change the angle to stagger the connecting piece of the tooling fixture, and continue to move. The cam 14 on the outer wall of the worm 222 is 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 pressurized chamber 15, it squeezes the lubricating oil in the pressurized chamber 15 and makes it enter the oil drip pipe 154 and then be discharged from the oil drip pipe 154. Oil drips from the drip hole 54 above the worm 222 onto the worm 222 for lubrication, thereby reducing friction between the worm 222 and the roller 221, making the rotation smoother, reducing wear and extending their service life. Each 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 negative pressure is generated inside the pressurizing chamber 15, so that the lubricating oil at the bottom of the base 1 is sucked into the pressurizing chamber 15 from the oil inlet hole 153 for replenishment. Since the oil inlet hole 153 is below the filter plate 16, some impurities in the lubricating oil during recycling will be filtered by the filter plate 16, avoiding excessive impurities in the used lubricating oil, which affects the lubrication effect.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A CNC milling and boring machine with a rotary worktable structure, characterized in that: The invention comprises a base (1), a rotating platform (2) is rotatably provided on the top of the base (1), a plurality of T-shaped slots (21) are provided on the top of the rotating platform (2), and a cleaning assembly is provided at the bottom of each of the plurality of T-shaped slots (21) for cleaning the T-shaped slots (21); A rotating mechanism is provided inside the base (1) for driving the rotating platform (2) to rotate; Lubricating mechanisms are provided on both sides of the inner wall of the base (1) for lubricating the rotating mechanism; The cleaning component comprises a groove (211), the groove (211) being opened below the position of the rotating table (2) corresponding to the T-shaped groove (21), a first synchronous belt (212) being provided for rotation inside the groove (211), two first synchronous wheels (213) for transmission being provided inside the first synchronous belt (212), a scraper rod (216) being hingedly connected to the outer ring of the first synchronous belt (212), and a connection between the scraper rod (216) and the first synchronous belt (212) being provided. A torsion spring for resetting is provided on the inner wall of the groove (211), a scraper block (215) is provided, and an inner lining block (214) is fixedly connected to the inner wall of the groove (211) at a position in the gap between the first synchronous belt (212) and the two first synchronous wheels (213), a support column (11) is fixedly connected to the center of the bottom of the inner wall of the base (1), and a first fixed ratchet (231) is fixedly sleeved on the outer wall of the support column (11), and the outer wall of the support column (11) is at the position of the first fixed ratchet ( A second fixed ratchet (232) is provided on the position fixing sleeve above the cleaning assembly (231), and the transmission direction of the second fixed ratchet (232) is opposite to that of the first fixed ratchet (231). The base (1) is provided with a plurality of sets 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 sets include a first movable ratchet (233), and the first movable ratchet (233) is unidirectionally meshed with the first fixed ratchet (231). The first movable ratchet (233) is driven by the transmission The output rod (234) is fixedly connected to the first synchronous wheel (213) at the corresponding position. The direction-changing gear set further includes a second movable ratchet (235). The second movable ratchet (235) is unidirectionally meshed with the second fixed ratchet (232). The second movable ratchet (235) is rotatably connected to the bottom of the rotating platform (2). The surface of the second movable ratchet (235) and the outer wall of the output rod (234) are respectively fixedly connected with a first gear (236), and the two first gears (236) are meshed with each other.

2. The CNC milling and boring machine with a rotary worktable structure according to claim 1, characterized in that: The outer wall of the rotating table (2) is fixedly connected with a plurality of push blocks (24) distributed in a ring array, a plurality of the push blocks (24) are in contact with the top of the base (1), and a plurality of the push blocks (24) are staggered with the T-shaped slots (21).

3. The CNC milling and boring machine with a rotary worktable structure according to claim 2, characterized in that: The rotating mechanism comprises a support ring (12), wherein the support ring (12) is fixedly connected to the bottom of the inner wall of the base (1); a sleeve ring (22) is fixedly connected to the bottom of the rotating platform (2), and the sleeve ring (22) is rotatably sleeved on the outer wall of the support ring (12) via a cross roller bearing (13).

4. The CNC milling and boring machine with a rotary worktable structure according to claim 3, characterized in that: The rotating mechanism further comprises 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 interior of the base (1), and the outer walls of the two worms (222) swirl 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 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.

5. The CNC milling and boring machine with a rotary worktable structure according to claim 4, characterized in that: The lubricating mechanism comprises two groups of pressurized chambers (15), which are respectively fixedly connected to both sides of the bottom of the inner wall of the base (1), and the inner wall of the base (1) is fixedly connected with a filter plate (16).

6. The CNC milling and boring machine with a rotary worktable structure according to claim 5, 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) corresponding to the positions of the piston block (151) are respectively fixedly connected to cams (14) for pressing the piston block (151). The bottom of one side of the pressurizing chamber (15) is provided with a plurality of An oil inlet hole (153) is provided inside each of the oil inlet holes (153), and a one-way valve is provided inside each of the oil inlet holes (153), and the one-way valve only allows the medium to flow into the pressurized chamber (15) from the oil inlet hole (153) in one direction. A plurality of oil dripping pipes (154) are fixedly connected to the bottom of one side of the pressurized chamber (15), and the plurality of oil dripping pipes (154) extend to the top of the worm (222), and an oil dripping hole is opened on the oil dripping pipe (154) at a position corresponding to the top of the worm (222).

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