A rotary table and a gantry machining center

Abstract

The present invention relates to the technical field of machining, and discloses a rotary worktable and a gantry machining center, which comprise a gantry machining frame and a machine tool structure. Maintenance liquid channels and nozzles are arranged in the first and second transfer seats of the machine tool structure; a chip collecting groove and an inclined surface ring plate are arranged on the surface of the rotary machining table, which cooperate with a T-shaped pipe and a spring piston rod to work. The front spring piston rod pushes the maintenance liquid into the maintenance liquid channel to realize automatic maintenance of the ball screw, saving labor and time costs; the rear spring piston rod pushes the metal powder additive and the spring piston, driving the grinding pestle to grind the metal chips. The metal powder additive assists in grinding, improving the grinding effect and the quality of the metal powder. There are also drainage holes to recover the coolant. The overall structure is ingeniously designed, solving the problems of difficult maintenance of the feeding system of the traditional rotary worktable and low efficiency of metal chip treatment, effectively improving the performance of the equipment and ensuring the efficient progress of machining.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly to a rotary table and a gantry machining center. Background Art

[0002] The rotary table of the gantry machining center has emerged and developed under the background of the continuous development of machining technology and the increasing requirements for the machining capacity and accuracy of machining centers. With the development of the manufacturing industry towards high precision, high efficiency, and high flexibility, traditional fixed worktables can no longer meet the machining requirements of complex parts. As one of the key functional components of the gantry machining center, the rotary table can expand the machining range of the gantry machining center, endow the machine tool with compound machining capabilities such as turning and milling, enable multiple surfaces of a part to be machined after one clamping, expand the functions of the fixed worktable of the gantry machining center, which can only perform functions such as boring, milling, and drilling, shorten the auxiliary time, improve the machining efficiency and accuracy. At the same time, it also provides an important basic support for realizing automated machining and intelligent manufacturing, and promotes the technological progress and development of the entire manufacturing industry.

[0003] However, in the actual application of the current rotary table of the gantry machining center, the feeding system (composed of core components such as a servo motor, a ball screw, and a guide rail) equipped with it exposes significant maintenance problems. After the feeding system runs continuously, the ball screw needs to be lubricated regularly to ensure its precise transmission performance and extend its service life. However, due to the fact that this feeding system is usually arranged in a preset isolation space inside the machine tool, this special layout makes the maintenance work extremely difficult. Every time maintenance is carried out, the staff has to carefully remove the relevant protective devices and pass through the complex machine tool structure to reach the ball screw. The whole process is not only cumbersome in operation, but also greatly increases the workload and difficulty of maintenance due to the narrow space and limited working positions, and will consume a large amount of labor and time costs.

[0004] Therefore, a rotary table and a gantry machining center are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a rotary table and a gantry machining center to solve the problem of difficult maintenance of the rotary table proposed in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A rotary table and a gantry machining center, comprising:

[0007] A gantry machining frame, including components such as columns, crossbeams, a feeding system, and a spindle system;

[0008] A machine tool structure, arranged below the spindle system of the gantry machining frame;

[0009] Wherein, the machine tool structure includes a first conveying seat and a second conveying seat;

[0010] A maintenance liquid channel is provided inside the first conveying seat and the second conveying seat, and drip nozzles are fixedly provided at two output ports of the maintenance liquid channel;

[0011] The second conveying seat is connected to the lower surface of the rotary processing table by bolts, and the surface of the rotary processing table is provided with a chip collection groove on the outer ring side of the middle mounting table, and the lower surface of the mounting table is fixedly provided with a bevel ring plate facing the chip collection groove, and the interior of the chip collection groove body is symmetrically fixed with T-tubes on the front and rear sides of the left annular path, and the internal sliding limit of the T-tube is provided with a spring piston rod, and the piston end of the spring piston rod slides and seals and is inserted into the interior of the connecting liquid pipe connected to the T-tube, wherein the pipe diameter side of the connecting liquid pipe on the front side is provided with a first one-way conveying pipe that passes through the rotary processing table. The rotary table has a liquid inlet channel and a one-way liquid output channel. A spring piston is slidingly arranged at the lower end of the rear connecting liquid pipe inside the rotary table. A one-way liquid channel is opened at the axial center position of the spring piston. A screw rod is fixedly arranged at the lower end of the spring piston, and the screw rod is spirally inserted into the screw hole in the center of the butterfly screw hole plate at the upper end of the grinding pestle. The grinding pestle is rotatably arranged above the interior of the grinding chamber opened inside the rotary table. A chip discharge hole is downwardly opened at the lowest position on the left side of the chip collecting groove inside the rotary table, and the lower end of the chip discharge hole is inclined downward and connected to the upper part of the grinding chamber.

[0012] Preferably, the machine tool structure also includes a bed body, and the surfaces of the bed plates on both sides above the bed body are fixedly provided with guide rails, and are movably connected to the processing workbench by cooperating with the guide rails and the rail wheels rollingly arranged on the lower surface of the processing workbench, and the surface of the bed body is equipped with a first feed system between the guide rails by bolts, and the ball screw surface transmission of the first feed system is equipped with a first conveying seat, and the first conveying seat is connected to the lower surface of the processing workbench by bolts, and under the drive of the first feed system, the processing workbench has the ability to move forward and backward, and the upper surface of the plate body symmetrically arranged on the front and rear sides of the processing workbench also has guide rails, and the processing workbench is movably connected to the rotary processing table by cooperating with the guide rails and the rail wheels rollingly arranged on the lower surface of the rotary processing table, and the surface of the processing workbench is equipped with a second feed system by bolts directly below the rotary processing table, and the ball screw surface transmission of the second feed system is equipped with a second conveying seat, and under the drive of the second feed system, the rotary processing table has the ability to move left and right, and the front and rear sides of the processing workbench are provided with a shield to block cutting chips.

[0013] Preferably, the maintenance liquid channel is composed of an annular channel opened at the middle position between the first transfer seat and the second transfer seat and a straight channel opened above the inner parts of the first transfer seat and the second transfer seat. Among them, an input branch channel penetrating the first transfer seat and the second transfer seat to one side is provided on the path of the annular channel, and an input interface is installed at the end of the branch channel. Dripping nozzles with anti-backflow functions are installed at both ends of the straight channel, and the pipe orifices of the dripping nozzles are tapered from top to bottom, and the lower ends of the dripping nozzles are arranged close to the lead screws of the first feeding system and the second feeding system.

[0014] Preferably, upwardly open diversion channels are respectively opened on the surfaces of the bed body and the processing workbench below the lead screws of the first feeding system and the second feeding system, and the bottom of the diversion channel is inclined downward toward the output side. A sieve mesh is fixedly covered at the upper port of the diversion channel, and the sieve mesh protrudes upward in an obtuse angle shape.

[0015] Preferably, the chip collecting groove is inclined from left to right, from bottom to top, and from deep to shallow, and the inclined surface ring plate is inclined from left to right, from top to bottom, and from high to low.

[0016] Preferably, the spring piston rod is composed of a rod body with a ball at the upper end and a piston at the lower end, a ring plate integrally provided on the rod body, and a spring sleeved on the rod body and fixed to the ring plate at the upper end. Among them, the lower end of the spring presses against the lower surface inside the T-shaped pipe.

[0017] Preferably, the ball end of the spring piston rod penetrates through the T-shaped pipe, and the ball surface is always in rolling contact with the lower ring surface of the inclined surface ring plate.

[0018] Preferably, the first one-way input liquid channel is opened on the upper side of the one-way output liquid channel. One-way valves are assembled inside both the first one-way input liquid channel and the one-way output liquid channel, and the opening directions of the one-way valves are set in opposite directions.

[0019] Preferably, the first one-way input liquid channel is connected to the maintenance liquid supply end through a pipeline. The output end of the one-way output liquid channel is communicated with the input end of the maintenance liquid channel inside the first transfer seat and the second transfer seat through a pipeline. A second one-way input liquid channel is opened and extends through to the centrifugal side in the lower part inside the connecting liquid pipe at the rear side. A one-way valve is assembled inside the second one-way input liquid channel.

[0020] Preferably, the spring piston is composed of a piston rod and a spring sleeved on the piston rod, and both ends of the spring are respectively pressed against the piston and the lower surface of the space where the spring piston is located. The distance between the lower surface of the grinding chamber and the grinding surface of the grinding pestle gradually decreases from the centrifugal side to the centripetal side. The inside of the grinding pestle is upwardly open to form a supply liquid channel, and one end of the supply liquid channel penetrates and opens into the inside of the grinding chamber. The lowermost part of the grinding chamber is provided with a hole for outwardly discharging metal powder. A lifting door plate is slidably arranged along the inner wall of the chip discharge hole at the communication port between the chip discharge hole and the grinding chamber. The lifting door plate is fixed to the spring piston through an S-shaped connecting rod and moves along with the movement of the spring piston. A plurality of drainage and discharge holes penetrating the rotary processing table are linearly arranged in an array along the lower part of the wall of the chip discharge hole, and the output ends of the drainage and discharge holes are connected to a pumping device through pipelines. A tongue plate extending outward is fixedly arranged on the front side of the rotary processing table.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. By arranging a maintenance liquid channel inside the first transfer seat and the second transfer seat and installing a drip nozzle at its outlet, and using the cooperation between the inclined surface ring plate and the spring piston rod when the rotary processing table rotates, when the inclined surface ring plate rotates to push the spring piston rod downward, the pressure in the connecting liquid pipe increases, so that the one-way output liquid channel is opened, and the maintenance liquid flows into the maintenance liquid channel through the pipeline and then drips onto the ball screws of the first feeding system and the second feeding system from the drip nozzle. At the same time, the feeding system drives the transfer seat to slide, so that the maintenance liquid is evenly coated on the surface of the screw, avoiding the cumbersome operation of manually removing the protection device for maintenance, greatly saving labor and time costs, and improving the maintenance efficiency and convenience;

[0023] 2. When the rotary processing table rotates, the lower ring surface of the inclined surface ring plate pushes the spring piston rod. The spring piston rod at the rear pushes the metal powder additive and the spring piston downward, driving the spiral rod to make the grinding pestle rotate rapidly, and crushing and grinding the metal chips entering the grinding chamber through the chip discharge hole. This design realizes the automatic collection and efficient grinding treatment of metal chips, reduces the workload of manually cleaning chips, improves the processing efficiency. At the same time, during the grinding process of metal chips, the metal powder additive enters the grinding chamber through the one-way liquid channel and the supply liquid channel, mixes with the metal chips, and assists in grinding and subsequent processing, improving the grinding effect and the quality of metal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the three-dimensional structure view of the present invention;

[0025] Figure 2 is the machine tool structure section of the present invention Figure 1 ;

[0026] Figure 3Machine tool structure section of the present invention Figure 2 ;

[0027] Figure 4 Schematic diagram of the rotary processing table of the present invention and its connection structure;

[0028] Figure 5 Section of the rotary processing table of the present invention Figure 1 and partial enlarged view;

[0029] Figure 6 Section of the rotary processing table of the present invention Figure 2 and partial enlarged view;

[0030] Figure 7 Section of the rotary processing table of the present invention Figure 3 .

[0031] In the figure:

[0032] 1. Gantry machining frame;

[0033] 2. Machine tool structure; 21. Bed body; 211. First feeding system; 212. Flow guiding groove; 213. Grating;

[0034] 22. Machining worktable; 221. First transfer seat; 2211. Maintenance liquid channel; 2212. Dripping nozzle; 222. Second feeding system;

[0035] 23. Rotary processing table; 231. Inclined surface ring plate; 232. Chip collecting groove; 2321. T-shaped pipe; 2322. Spring piston rod; 2323. Connecting liquid pipe; 2324. First one-way input liquid channel; 2325. One-way output liquid channel; 2326. Second one-way input liquid channel; 2327. Spring piston; 2328. One-way liquid channel; 2329. Spiral ribbon rod; 233. Tongue plate; 234. Second transfer seat; 235. Grinding pestle; 2351. Butterfly screw hole plate; 2352. Supply liquid channel; 2353. Grinding powder chamber; 2354. Lifting door panel; 2355. Chip discharging hole; 2356. Drainage hole. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 to 7 , the present invention provides a technical solution for a rotary worktable and a gantry machining center:

[0038] A rotary table and gantry machining center, comprising:

[0039] The gantry machining frame 1 includes components such as columns, crossbeams, feed systems, and spindle systems. The spindle system includes components such as a spindle motor, a spindle box, and a spindle, and is used to cooperate with a tool to perform cutting processing on the workpiece;

[0040] The machine tool structure 2 has the ability of lateral movement and rotational movement, which is arranged below the spindle system between the gantry processing frame 1 and is used to install the workpiece and cooperate with the gantry processing frame 1 to perform multi-station processing;

[0041] Among them, the machine tool structure 2 includes a bed 21, and the surfaces of the bed boards on both sides above the bed 21 are fixedly provided with guide rails, and the guide rails and the rail wheels arranged on the lower surface of the processing table 22 are used to connect with the processing table 22 and limit the movement of the rails. The surface of the bed 21 is equipped with a first feeding system 211 through bolts between the guide rails. The ball screw surface of the first feeding system 211 is provided with a first conveying seat 221 for transmission. The first conveying seat 221 is connected to the lower surface of the processing table 22 by bolts, and under the drive of the first feeding system 211, the processing table 22 has the ability to move forward and backward. The front and rear sides of the processing table 22 are symmetrically arranged. The upper surface of the plate body is also provided with a guide rail, and the processing workbench 22 cooperates with the guide rail and the rail wheel rollingly arranged on the lower surface of the rotary processing table 23 to be connected to the rotary processing table 23 and limit the movement in the rail direction. The surface of the processing workbench 22 is equipped with a second feeding system 222 by bolts directly below the rotary processing table 23, and the ball screw surface of the second feeding system 222 is provided with a second conveying seat 234 for transmission. The second conveying seat 234 is connected to the lower surface of the rotary processing table 23 by bolts and, driven by the grate 213, enables the rotary processing table 23 to move left and right. The front and rear sides of the processing workbench 22 are provided with shields to block cutting debris.

[0042] Inside both the first transfer seat 221 and the second transfer seat 234, a maintenance liquid channel 2211 is radially provided. The maintenance liquid channel 2211 is composed of an annular channel opened at the middle position between the first transfer seat 221 and the second transfer seat 234 and a straight channel opened above the inside of the first transfer seat 221 and the second transfer seat 234. Among them, on the path of the annular channel, there is an input branch channel that penetrates the first transfer seat 221 and the second transfer seat 234 to one side, and an input interface is installed at the end of the branch channel. At both ends of the straight channel, drip nozzles 2212 with a check valve function are installed. The nozzle orifice of the drip nozzle 2212 is tapered from top to bottom. And the lower end of the drip nozzle 2212 is close to the lead screws of the first feeding system 211 and the second feeding system 222. On the surfaces of the bed body 21 and the processing workbench 22, upwardly open diversion grooves 212 are respectively opened below the lead screws of the first feeding system 211 and the second feeding system 222. And the bottom of the diversion groove 212 is inclined downward toward the output side. A sieve mesh 213 is fixedly covered at the upper port of the diversion groove 212, and the sieve mesh 213 protrudes upward in an obtuse angle shape;

[0043] The rotary processing table 23 consists of a main body, a drive system arranged on the right side inside the main body, and a mounting table. Among them, a chip collection groove 232 is opened on the upper surface of the main body of the rotary processing table 23 on the outer ring side of the mounting table. And the chip collection groove 232 is inclined from left to right, from bottom to top, and from deep to shallow. A beveled ring plate 231 is fixedly arranged on the lower surface of the mounting table opposite to the chip collection groove 232, and the beveled ring plate 231 is inclined from left to right, from top to bottom, and from high to low. Inside the groove body of the chip collection groove 232, T-shaped tubes 2321 are symmetrically and fixedly arranged on the front and rear sides of the left annular path. And a spring piston rod 2322 is slidably limited inside the T-shaped tube 2321. The spring piston rod 2322 is composed of a rod body with a ball at the upper end and a piston at the lower end, a ring plate integrally arranged on the rod body, and a spring sleeved on the rod body and fixed to the ring plate at the upper end. Among them, the lower end of the spring presses against the lower surface inside the T-shaped tube 2321. The ball end of the spring piston rod 2322 passes through the T-shaped tube 2321, and the ball surface is always in rolling contact with the lower ring surface of the beveled ring plate 231. The piston end of the spring piston rod 2322 slidably and sealingly penetrates into a communicating liquid pipe 2323 opened inside the rotary processing table 23 and communicated with the T-shaped tube 2321. Among them, on the side diameter of the communicating liquid pipe 2323 located at the front side, a first one-way input liquid channel 2324 and a one-way output liquid channel 2325 that penetrate the rotary processing table 23 toward the centrifugal side are opened. And the first one-way input liquid channel 2324 is opened above the one-way output liquid channel 2325. One-way valves are assembled inside both the first one-way input liquid channel 2324 and the one-way output liquid channel 2325, and the opening directions of the one-way valves are set in the opposite direction. The first one-way input liquid channel 2324 is connected to the maintenance liquid supply end through a pipeline. The output end of the one-way output liquid channel 2325 is communicated with the input end of the maintenance liquid channel 2211 inside the first transfer seat 221 and the second transfer seat 234 through a pipeline.

[0044] During operation, as the rotary processing table 23 rotates around the mounting table, the inclined surface ring plate 231 on its lower surface rotates accordingly. Since the inclined surface ring plate 231 is inclined from left to right, from top to bottom, and from high to low, when rotating, it will push the spring piston rod 2322 in the left T-tube 2321 of the chip collection groove 232 to move downward. The downward movement of the front spring piston rod 2322 presses the maintenance liquid in the connecting liquid pipe 2323, increasing the pressure and opening the one-way output liquid channel 2325. The maintenance liquid enters the maintenance liquid channel 2211 of the transfer seat through the pipeline, and then drips onto the surface of the ball screw through the drip nozzle 2212. At the same time, the feeding system drives the transfer seat to slide along the ball screw, evenly coating the maintenance liquid to achieve synchronous maintenance of the ball screw.

[0045] In summary, by arranging the maintenance liquid channels 2211 inside the first transfer seat 221 and the second transfer seat 234 and installing the drip nozzle 2212 at their output ports, and using the cooperation between the inclined surface ring plate 231 and the spring piston rod 2322 when the rotary processing table 23 rotates. When the inclined surface ring plate 231 rotates and pushes the spring piston rod 2322 to move downward, the pressure in the connecting liquid pipe 2323 increases, opening the one-way output liquid channel 2325. The maintenance liquid flows into the maintenance liquid channel 2211 through the pipeline and then drips onto the ball screws of the first feeding system 211 and the second feeding system 222 through the drip nozzle 2212. At the same time, the feeding system drives the transfer seat to slide, evenly coating the maintenance liquid on the surface of the screw, avoiding the cumbersome operation of manually removing the protective device for maintenance, greatly saving labor and time costs, and improving the maintenance efficiency and convenience.

[0046] As an embodiment of the present invention, as Figures 5 to 7As shown in the figure, a second one-way input liquid channel 2326 is extended and penetrated downward inside the connecting liquid pipe 2323 located at the rear side, and a one-way valve is assembled inside the second one-way input liquid channel 2326. Inside the rotary processing table 23, a spring piston 2327 is slidably arranged at intervals at the lower end of the rear connecting liquid pipe 2323. The space where the spring piston 2327 is located is communicated with the connecting liquid pipe 2323 through a through hole opened. The spring piston 2327 is composed of a piston rod and a spring sleeved on the piston rod. The two ends of the spring are respectively pressed against the piston and the lower surface of the space where the spring piston 2327 is located. A one-way liquid channel 2328 is opened through the spring piston 2327 in the axial center position, and a pressure relief valve is assembled at the upper port of the one-way liquid channel 2328. A spiral rod 2329 is fixedly arranged at the lower end of the spring piston 2327, and the spiral rod 2329 is spirally inserted into the screw hole at the center of the butterfly screw hole plate 2351. Open through holes for liquid flow are pre-opened on the surface of the butterfly screw hole plate 2351, and the butterfly screw hole plate 2351 is fixedly arranged at the upper end of the pestle 235 through bolts. The pestle 235 is rotatably arranged above the inside of the powder grinding chamber 2353 opened inside the rotary processing table 23, and the distance between the lower surface of the powder grinding chamber 2353 and the grinding surface of the pestle 235 gradually decreases from the centrifugal side to the centripetal side. A supply liquid channel 2352 is opened upward inside the pestle 235, and one end of the supply liquid channel 2352 is opened and penetrated into the inside of the powder grinding chamber 2353. The lowest position of the powder grinding chamber 2353 has a hole for outputting metal powder outward. A chip discharging hole 2355 is opened downward at the lowest position on the left side of the chip collecting groove 232 inside the rotary processing table 23, and the lower end of the chip discharging hole 2355 is inclined downward and communicated with the upper part inside the powder grinding chamber 2353. And a lifting door plate 2354 is slidably arranged along the inner wall of the chip discharging hole 2355 at the communication port of the chip discharging hole 2355 and the powder grinding chamber 2353. The lifting door plate 2354 is fixed to the spring piston 2327 through an S-shaped connecting rod and moves with the movement of the spring piston 2327. A plurality of drainage holes 2356 penetrating the rotary processing table 23 are linearly arranged in an array along the pipe diameter below the wall of the chip discharging hole 2355, and the output ends of the drainage holes 2356 are connected to a pumping device through a pipeline. At least one outwardly extended tongue plate 233 is fixedly arranged on the front side of the rotary processing table 23.

[0047] When the rear spring piston rod 2322 moves downward, it pushes the metal powder additive and the spring piston 2327, causing the spring piston 2327 to slide down along the inner wall, driving the spiral ribbon rod 2329, so that the lifting door plate 2354 closes the passage between the chip discharge hole 2355 and the grinding chamber 2353. At the same time, it pushes the spiral ribbon rod 2329, driving the grinding pestle 235 to rotate rapidly, grinding the metal debris that enters the grinding chamber 2353 through the chip discharge hole 2355. As the spring piston rod 2322 continues to move downward, after the metal powder additive reaches the opening condition of the one-way valve, it enters the grinding chamber 2353 through the one-way liquid channel 2328 and the supply liquid channel 2352 to assist in grinding. The ground metal powder is output from the lower port of the grinding chamber 2353.

[0048] In summary, when the rotary processing table 23 rotates, the lower ring surface of the inclined surface ring plate 231 pushes the rear spring piston rod 2322. Among them, the rear spring piston rod 2322 pushes the metal powder additive and the spring piston 2327 to move downward, driving the spiral ribbon rod 2329 to make the grinding pestle 235 rotate rapidly, and crushing and grinding the metal debris that enters the grinding chamber 2353 through the chip discharge hole 2355. This design realizes the automatic collection and efficient grinding treatment of metal debris, reduces the workload of manual debris cleaning, improves the processing efficiency. At the same time, during the grinding process of metal debris, the metal powder additive enters the grinding chamber 2353 through the one-way liquid channel 2328 and the supply liquid channel 2352, mixes with the metal debris, assists in grinding and subsequent processing, and improves the grinding effect and the quality of metal powder.

[0049] Working principle: During operation, first fix the workpiece material to be processed on the surface of the mounting table of the rotary processing table 23, and then start the gantry processing frame 1 and the machine tool structure 2 through the console, so that the gantry processing frame 1 and the machine tool structure 2 operate according to the preset processing program; during operation, first the mounting table of the rotary processing table 23 drives the workpiece material to rotate according to the program under the drive of the drive system, and at the same time the main shaft system of the gantry processing frame 1 will cut the workpiece material according to the program in cooperation with the feeding system;

[0050] During this process, as the mounting table of the rotary processing table 23 rotates, the inclined surface ring plate 231 on the lower surface of the mounting table rotates accordingly. Since the inclined surface ring plate 231 is inclined from left to right, from top to bottom, and from high to low, during its rotation, it will cooperate with the spring piston rod 2322 in the T-tube 2321 symmetrically arranged on the front and rear sides of the left annular path of the chip collection groove 232 on the upper surface of the main body of the rotary processing table 23. When the inclined surface ring plate 231 rotates, its lower ring surface with height fluctuations will continuously push the ball end of the spring piston rod 2322, causing the spring piston rod 2322 to move downward along the inner walls of the T-tube 2321 and the connecting liquid pipe 2323. Among them, the spring piston rod 2322 on the front side (the spring piston rod 2322 close to the tongue plate 233) will push the maintenance liquid in the connecting liquid pipe 2323 during the downward movement, increasing the pressure inside the connecting liquid pipe 2323. Under the action of the pressure, the one-way output liquid channel 2325 will reach the pressure for opening and relieving pressure, enabling the connecting liquid pipe 2323 to be temporarily connected to the maintenance liquid channel 2211 through the pipeline. Then, the maintenance liquid will enter the maintenance liquid channel 2211 inside the first transfer seat 221 and the second transfer seat 234 along the pipeline, and finally drip from the drip nozzle 2212 onto the ball screws of the first feeding system 211 and the second feeding system 222 along the maintenance liquid channel 2211. At the same time, as the maintenance liquid drips on the ball screws, the first feeding system 211 and the second feeding system 222 will respectively drive the first transfer seat 221 of the processing workbench 22 and the second transfer seat 234 of the rotary processing table 23 to slide along the ball screws, realizing the uniform coating of the maintenance liquid on the ball screws and achieving the synchronous maintenance of the ball screws. Then, the excess maintenance liquid dripping from the ball screws will fall on the surface of the lower grid 213 and drip into the diversion groove 212 inside the grid 213, and then flow out and be recycled along the diversion groove 212;

[0051] Meanwhile, when the spring piston rod 2322 at the rear side (the spring piston rod 2322 away from the tongue plate 233) is pushed downward, it will press the metal powder additive (which can be selected according to the metal material and requirements) and the spring piston 2327. Under the dual action of the metal powder additive and the spring piston rod 2322, the spring piston 2327 will slide and seal downward along the inner wall. The downward-moving spring piston 2327 will simultaneously push down the spiral rod 2329 fixedly connected to its lower end. The spiral rod 2329 is spirally inserted into the screw hole at the center of the butterfly-shaped screw hole plate 2351. When the spring piston 2327 moves downward, it will simultaneously drive the lifting door plate 2354 to temporarily close the channel connecting the chip discharge hole 2355 and the grinding chamber 2353, and push the spiral rod 2329 through the butterfly-shaped screw hole plate 2351. Since the butterfly-shaped screw hole plate 2351 is fixed to the upper end of the grinding pestle 235 by bolts, this will drive the grinding pestle 235 to rotate rapidly (similar to the principle of the flying fairy toy). The grinding pestle 235 is rotatably arranged above the grinding chamber 2353 opened inside the rotary processing table 23, and the distance between the lower surface of the grinding chamber 2353 and the grinding surface of the grinding pestle 235 gradually decreases from the centrifugal side to the centripetal side. Therefore, the rotating grinding pestle 235 will crush and grind the metal chips entering the grinding chamber 2353 through the chip discharge hole 2355. As the rear spring piston rod 2322 continues to move downward, the metal powder additive is continuously pressed. When the opening condition of the one-way valve at the upper port of the one-way liquid channel 2328 at the axial center position of the spring piston 2327 is reached, the metal powder additive enters the inside of the one-way liquid channel 2328, and then enters the inside of the grinding chamber 2353 through the supply liquid channel 2352 that is open upward inside the grinding pestle 235 and has one end communicating with the inside of the grinding chamber 2353, and is mixed with the metal chips being ground to assist in the grinding and subsequent processing of the metal chips. After grinding, it will be output from the lower port of the grinding chamber 2353. At the same time, the coolant entering the chip discharge hole 2355 will be continuously pumped out and recycled from the inside of the chip discharge hole 2355 under the auxiliary pumping of an external suction device after the lifting door plate 2354 descends to temporarily close the channel connecting the chip discharge hole 2355 and the grinding chamber 2353;

[0052] After the above work is performed, the spring piston rod 2322 will move up and reset under the action of the spring, and the upward moving spring piston rod 2322 will restore the connecting liquid pipe 2323 to its initial space size. Since the curing liquid and metal powder additive originally introduced into the connecting liquid pipe 2323 have been depressurized and discharged, a negative pressure environment will appear in the connecting liquid pipe 2323 when no other substances are introduced to supplement. Under the negative pressure condition, the first one-way input liquid channel 2324 and the second one-way input liquid channel 2326 will both open. The connecting liquid pipe 2323 is temporarily connected with the external supply equipment to replenish the curing liquid and metal powder additives, providing a raw material basis for the next curing liquid dripping and metal powder additive injection into the metal debris. The spring piston 2327 will also move up and reset under the action of the spring, and simultaneously drive the lifting door plate 2354 to move up, releasing the blockage of the connecting channel between the chip discharge hole 2355 and the grinding chamber 2353, so that the metal debris can fall into the grinding chamber 2353 until the workpiece processing is completed.

[0053] It should be noted that the external supply equipment, suction equipment, etc. recorded in the above content can be started and stopped based on the reciprocating motion of the spring piston rod 2322; the curing liquid and metal powder additives can be selected and proportioned according to actual conditions, among which the metal powder additives can be a stable additive for removing metal surface oxide film, an additive added during stable metal powder metallurgy mixing, or a stable non-conflicting mixed product of the above two additives.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rotary table and a gantry machining center, comprising: A gantry machining frame, including columns, a crossbeam, a feeding system, and a spindle system; A machine tool structure, disposed below the spindle system of the gantry machining frame; Wherein, the machine tool structure includes a first transfer seat, a second transfer seat, and a rotary machining table, and is characterized in that: Maintenance liquid channels are provided inside the first transfer seat and the second transfer seat, and drip nozzles are fixedly provided at both output ports of the maintenance liquid channels; Wherein, the second transfer seat is bolted to the lower surface of the rotary machining table. A chip collection groove is provided on the surface of the rotary machining table. An installation table is rotatably provided at the axial center position inside the chip collection groove of the rotary machining table. An inclined surface ring plate is fixedly provided on the lower surface of the installation table facing the chip collection groove. T-shaped pipes are symmetrically and fixedly provided on the front and rear sides of the left-side annular path inside the chip collection groove body. A spring piston rod is slidably and limitably provided inside the T-shaped pipe. The piston end of the spring piston rod slidably and sealingly penetrates into a communicating liquid pipe communicating with the T-shaped pipe. Wherein, a first one-way input liquid channel and a one-way output liquid channel penetrating through the rotary machining table are provided on the side diameter of the communicating liquid pipe located on the front side. A spring piston is slidably provided at intervals at the lower end of the communicating liquid pipe on the rear side inside the rotary machining table. A one-way liquid channel is provided at the axial center position of the spring piston. A spiral rod is fixedly provided at the lower end of the spring piston. The spiral rod is spirally inserted into a screw hole in the center of a butterfly-shaped screw hole plate at the upper end of a grinding pestle. The grinding pestle is rotatably provided above the inside of a powder grinding chamber provided inside the rotary machining table. A chip discharge hole is provided downward at the lowest position on the left side of the chip collection groove inside the rotary machining table, and the lower end of the chip discharge hole is inclined downward and communicates with the upper part inside the powder grinding chamber; The spring piston rod is composed of a rod body with a ball at the upper end and a piston at the lower end, an annular plate integrally provided on the rod body, and a spring sleeved on the rod body and fixed to the annular plate at the upper end. Wherein, the lower end of the spring presses against the lower surface inside the T-shaped pipe; The first one-way input liquid channel is connected to a maintenance liquid supply end through a pipeline. The output end of the one-way output liquid channel is connected to the input end of the maintenance liquid channels inside the first transfer seat and the second transfer seat through a pipeline. A second one-way input liquid channel is provided extending through to the centrifugal side downward inside the communicating liquid pipe located on the rear side. A one-way valve is assembled inside the second one-way input liquid channel; The spring piston is composed of a piston rod and a spring sleeved on the piston rod, and the two ends of the spring are respectively pressed against the lower surface of the space where the piston and the spring piston are located. The distance between the lower surface of the grinding chamber and the grinding surface of the grinding pestle gradually decreases from the centrifugal side to the proximal side. The interior of the grinding pestle is open upward and is provided with a supply liquid channel, and one end of the supply liquid channel is open to the interior of the grinding chamber. The bottom of the grinding chamber is provided with a channel for outputting metal powder to the outside. A lifting door plate is provided at the connecting port between the chip discharge hole and the grinding chamber, which slides along the inner wall of the chip discharge hole. The lifting door plate is fixed to the spring piston through an S-shaped connecting rod and moves with the movement of the spring piston. Several drainage holes that pass through the rotary processing table are provided below the chip discharge hole pipe wall along a linear array of pipe diameters, and the output end of the drainage hole is connected to the pumping equipment through a pipeline. A tongue plate extending outward is fixed on the front side of the rotary processing table.

2. The rotary table and gantry machining center according to claim 1, characterized in that: The machine tool structure also includes a bed body, and the surfaces of the bed plates on both sides above the bed body are fixedly provided with guide rails, and are movably connected to the processing workbench by cooperating with the guide rails and the rail wheels rollingly arranged on the lower surface of the processing workbench, and the surface of the bed body is equipped with a first feed system through bolts between the guide rails, and the ball screw surface transmission of the first feed system is equipped with a first conveying seat, and the first conveying seat is connected to the lower surface of the processing workbench by bolts, and under the drive of the first feed system, the processing workbench has the ability to move forward and backward, and the upper surface of the plate body symmetrically arranged on the front and rear sides of the processing workbench also has guide rails, and the processing workbench is movably connected to the rotary processing table by cooperating with the guide rails and the rail wheels rollingly arranged on the lower surface of the rotary processing table, and the surface of the processing workbench is equipped with a second feed system by bolts directly below the rotary processing table, and the ball screw surface transmission of the second feed system is equipped with a second conveying seat, and under the drive of the second feed system, the rotary processing table has the ability to move left and right, and the front and rear sides of the processing workbench are provided with a shield to block cutting chips.

3. The rotary table and gantry machining center according to claim 1, characterized in that: The maintenance liquid channel consists of a ring channel opened in the middle position between the first conveying seat and the second conveying seat, and a straight channel opened above the first conveying seat and the second conveying seat, wherein the path of the ring channel is provided with an input branch channel that passes through the first conveying seat and the second conveying seat to one side, and an input interface is installed at the end of the branch channel, and a drip nozzle with a non-return function is installed at both ends of the straight channel, and the nozzle of the drip nozzle is gradually narrowed from top to bottom, and the lower end of the drip nozzle is arranged close to the screw rod of the first feeding system and the second feeding system.

4. A rotary table and a gantry machining center according to claim 2, characterized in that: The surfaces of the bed and the processing workbench are respectively provided with upwardly open guide grooves below the screw rods of the first feeding system and the second feeding system, and the bottom of the guide groove is tilted downward toward the output side. The upper end of the guide groove is covered and fixed with a grate, and the grate protrudes upward at an obtuse angle.

5. A rotary table and a gantry machining center according to claim 1, characterized in that: The chip collecting groove is tilted from left to right, from bottom to top, and from deep to shallow, and the bevel ring plate is tilted from left to right, from top to bottom, and from high to low.

6. The rotary table and gantry machining center according to claim 1, characterized in that: The ball end of the spring piston rod passes through the T-tube, and the ball surface is always in rolling contact with the lower ring surface of the bevel ring plate.

7. A rotary table and a gantry machining center according to claim 1, characterized in that: The first one-way input liquid channel is arranged on the upper side of the one-way output liquid channel. One-way valves are assembled inside both the first one-way input liquid channel and the one-way output liquid channel, and the opening directions of the one-way valves are set in opposite directions.

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