Rotary table and gantry machining center

Abstract

The invention relates to the technical field of machining, and discloses a rotating table and a gantry machining center, the rotating table comprises a gantry machining frame and a machine tool structure, and a maintenance liquid channel and a drip nozzle are arranged in a first conveying seat and a second conveying seat of the machine tool structure; a chip collecting groove and a slope ring plate are arranged on the surface of the rotary machining table and matched with a T pipe and spring piston rods to work, the spring piston rod on the front side pushes maintenance liquid to enter a maintenance liquid channel, automatic maintenance of the ball screw is achieved, and manpower and time cost are saved; the spring piston rod on the rear side pushes the metal powder additive and the spring piston to drive the grinding pestle to grind the metal scraps, the metal powder additive assists in grinding, the grinding effect and the metal powder quality are improved, a water drainage hole is further formed for recycling cooling liquid, the overall structural design is ingenious, and the practicability is high. The problems that a feeding system of a traditional rotating table is difficult to maintain and the metal scrap treatment efficiency is low are solved, the equipment performance is effectively improved, and efficient machining is guaranteed.

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 a 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 tables can no longer meet the machining requirements of complex parts. As one of the key functional components of a 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, and enable multiple surfaces of a part to be machined after a single clamping, expanding the functions of the fixed table of the gantry machining center, which can only perform boring, milling, drilling, etc., shortening the auxiliary time, improving the machining efficiency and accuracy. At the same time, it also provides an important basic support for realizing automated machining and intelligent manufacturing, promoting the technological progress and development of the entire manufacturing industry.

[0003] However, in the actual application of the current rotary table of a 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 operates 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, consuming 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 solution: A rotary table and a gantry machining center, comprising: A gantry machining frame, including components such as columns, crossbeams, a feeding system, and a spindle system; A machine tool structure, arranged below the spindle system of the gantry machining frame; Wherein, the machine tool structure includes a first transfer seat and a second transfer seat; 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; 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 collecting groove on the outer ring side of the middle mounting table, and a bevel ring plate is fixedly provided on the lower surface of the mounting table opposite to the chip collecting groove, and the interior of the chip collecting groove body is symmetrically fixed with a T-tube 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 with the T-tube, wherein the pipe diameter side of the connecting liquid pipe located on the front side is provided with a first one-way conveying groove that passes through the rotary processing table. The rotary table has a spring piston which is arranged at intervals and slides at the lower end of the rear connecting liquid pipe, and a one-way liquid channel is opened at the axial 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 in 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 grinding chamber opened in the rotary table, and a chip discharge hole is opened downward at the lowest position on the left side of the chip collecting groove in the rotary table, and the lower end of the chip discharge hole is inclined downward to communicate with the upper part of the grinding chamber.

[0007] 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 table by cooperating with the guide rails and rail wheels rollingly arranged on the lower surface of the processing table, and the surface of the bed body is equipped with a first feeding system through bolts between the guide rails, and the ball screw surface transmission of the first feeding system is equipped with a first conveying seat, and the first conveying seat is connected to the lower surface of the processing table by bolts, and under the drive of the first feeding system, the processing table 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 table also has guide rails, and the processing table is movably connected to the rotary processing table by cooperating with the guide rails and rail wheels rollingly arranged on the lower surface of the rotary processing table, and the surface of the processing table is equipped with a second feeding system through bolts directly below the rotary processing table, and the ball screw surface transmission of the second feeding system is equipped with a second conveying seat, and under the drive of the second feeding system, the rotary processing table has the ability to move left and right, and the front and rear sides of the processing table are provided with covers to block cutting chips.

[0008] 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 straight channels opened above the interiors 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 a check function are installed at both ends of the straight channel, and the nozzle openings of the dripping nozzles are tapered from top to bottom, and the lower ends of the dripping nozzles are close to the lead screws of the first feeding system and the second feeding system.

[0009] 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 screen is fixedly covered at the upper port of the diversion channel, and the screen protrudes upward in an obtuse angle shape.

[0010] Preferably, the chip collection 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.

[0011] 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, 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. Among them, the lower end of the spring presses against the lower surface inside the T-tube.

[0012] Preferably, the ball end of the spring piston rod penetrates through the T-tube, and the ball surface is always in rolling contact with the lower ring surface of the inclined surface ring plate.

[0013] Preferably, the first one-way input liquid channel is opened above 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.

[0014] 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 extending through the lower part of the inside of the communicating liquid pipe at the rear side toward the centrifugal side, and a one-way valve is assembled inside the second one-way input liquid channel.

[0015] 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 open upward 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 discharging metal powder outward. 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 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.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 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 utilizing 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 and pushes the spring piston rod downward, the pressure in the communication liquid pipe increases, enabling the one-way output liquid channel to open. 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 rod, 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. 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, crushing and grinding the metal debris entering the grinding chamber through the chip discharge hole. This design realizes the automatic collection and efficient grinding treatment of metal debris, reduces the workload of manually cleaning the debris, improves the processing efficiency. At the same time, during the grinding process of the metal debris, the metal powder additive enters the grinding chamber through the one-way liquid channel and the supply liquid channel, mixes with the metal debris, and assists in grinding and subsequent processing, improving the grinding effect and the quality of the metal powder. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural view of the present invention; Figure 2 is a cross-section of the machine tool structure of the present invention Figure 1 ; Figure 3 is a cross-section of the machine tool structure of the present invention Figure 2 ; Figure 4Schematic diagram of the rotary processing table and its connection structure of the present invention; Figure 5 Cross-section of the rotary processing table of the present invention Figure 1 and partial enlarged view; Figure 6 Cross-section of the rotary processing table of the present invention Figure 2 and partial enlarged view; Figure 7 Cross-section of the rotary processing table of the present invention Figure 3 .

[0018] In the figure: 1. Gantry machining frame; 2. Machine tool structure; 21. Bed; 211. First feeding system; 212. Flow guide groove; 213. Sieve; 22. Machining worktable; 221. First transfer seat; 2211. Maintenance liquid channel; 2212. Dripping nozzle; 222. Second feeding system; 23. Rotary processing table; 231. Inclined surface ring plate; 232. Chip collection groove; 2321. T-tube; 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. Screw 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 and discharge hole. Specific embodiments

[0019] 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.

[0020] Please refer to Figures 1 to 7 , the present invention provides a technical solution for a rotary worktable and a gantry machining center: A rotary worktable and a gantry machining center, comprising: The gantry machining frame 1 includes components such as columns, crossbeams, feeding systems, and spindle systems. Among them, the spindle system includes components such as a spindle motor, a spindle box, and a spindle, and is used to cooperate with the tool to perform cutting processing on the workpiece; The machine tool structure 2, which has the ability of lateral movement and rotational movement, is arranged below the spindle system between the gantries of the gantry machining frame 1 for installing workpieces and cooperating with the gantry machining frame 1 for multi-station machining; Among them, the machine tool structure 2 includes a bed body 21. Guide rails are fixedly arranged on the surfaces of the bed plates on both sides above the bed body 21. The machine tool structure 2 is connected to the processing workbench 22 and the rail direction movement is limited by cooperating with the guide rails and the rail wheels rolling on the lower surface of the processing workbench 22. A first feed system 211 is assembled on the surface of the bed body 21 between the guide rails by bolts. A first transfer seat 221 is drivenly arranged on the ball screw surface of the first feed system 211. The first transfer seat 221 is bolted to the lower surface of the processing workbench 22. Driven by the first feed system 211, the processing workbench 22 has the ability to move back and forth. Guide rails are also provided on the upper surfaces of the plate bodies symmetrically arranged on the front and rear sides of the processing workbench 22. The processing workbench 22 is connected to the rotary processing table 23 and the rail direction movement is limited by cooperating with the guide rails and the rail wheels rolling on the lower surface of the rotary processing table 23. A second feed system 222 is assembled on the surface of the processing workbench 22 directly below the rotary processing table 23 by bolts. A second transfer seat 234 is drivenly arranged on the ball screw surface of the second feed system 222. The second transfer seat 234 is bolted to the lower surface of the rotary processing table 23. Driven by the second feed system 222, the rotary processing table 23 has the ability to move left and right. Shields for blocking cutting debris are provided on both the front and rear sides of the processing workbench 22; Maintenance liquid channels 2211 are radially opened inside both the first transfer seat 221 and the second transfer seat 234. The maintenance liquid channels 2211 are composed of an annular channel opened at the middle position of 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, an input branch channel that penetrates the first transfer seat 221 and the second transfer seat 234 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. Check valves 2212 with a non-return function are installed at both ends of the straight channel. The nozzle orifice of the check valve 2212 is tapered from top to bottom. The lower end of the check valve 2212 is close to the ball screws of the first feed system 211 and the second feed system 222. Flow guiding grooves 212 that open upward are respectively opened on the surfaces of the bed body 21 and the processing workbench 22 below the ball screws of the first feed system 211 and the second feed system 222. The bottom of the flow guiding groove 212 is inclined downward toward the output side. A sieve 213 is fixedly covered and covered at the upper port of the flow guiding groove 212, and the sieve 213 protrudes upward in an obtuse angle shape; The rotary processing table 23 is composed 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 formed on the outer ring side of the mounting table on the upper surface of the main body of the rotary processing table 23, and the chip collection groove 232 is inclined from left to right, from bottom to top, and from deep to shallow. A bevel ring plate 231 is fixedly arranged on the lower surface of the mounting table opposite to the chip collection groove 232, and the bevel ring plate 231 is inclined from left to right, from top to bottom, and from high to low. T-shaped pipes 2321 are symmetrically and fixedly arranged on the front and rear sides of the left-side annular path inside the groove body of the chip collection groove 232, and a spring piston rod 2322 is slidably and limitably arranged inside the T-shaped pipes 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 pipes 2321, the ball end of the spring piston rod 2322 penetrates out of the T-shaped pipes 2321, and the ball surface is always in rolling contact with the lower ring surface of the bevel 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 communicating with the T-shaped pipes 2321. Among them, 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 formed on the side of the pipe diameter of the communicating liquid pipe 2323 located on the front side, and the first one-way input liquid channel 2324 is formed 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 arranged in the opposite direction. The first one-way input liquid channel 2324 is connected to the maintenance liquid supply end through a pipeline, and the output end of the one-way output liquid channel 2325 is communicated with the input end of a maintenance liquid channel 2211 inside the first transfer seat 221 and the second transfer seat 234 through a pipeline.

[0021] During operation, as the mounting table of the rotary processing table 23 rotates, the bevel ring plate 231 on its lower surface rotates accordingly. Since the bevel ring plate 231 is inclined from left to right, from top to bottom, and from high to low, it will push the spring piston rod 2322 inside the T-shaped pipes 2321 on the left side of the chip collection groove 232 downward when rotating. The spring piston rod 2322 on the front side moves downward to push the maintenance liquid inside the communicating liquid pipe 2323, increasing the pressure, and the one-way output liquid channel 2325 opens. 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 nozzle 2212. At the same time, the feeding system drives the transfer seat to slide along the ball screw to evenly coat the maintenance liquid, realizing synchronous maintenance of the ball screw.

[0022] In summary, by arranging a maintenance liquid channel 2211 inside the first transfer seat 221 and the second transfer seat 234, and installing a dropper 2212 at its output port, with the cooperation of 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 to push the spring piston rod 2322 downward, the pressure in the communication 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 from the dropper 2212. 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] As an embodiment of the present invention, as Figures 5 to 7As shown, a second one-way input liquid channel 2326 is provided in the lower part of the rear connecting liquid pipe 2323 and extends through to the centrifugal side. 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 communicates with the connecting liquid pipe 2323 through a through hole. 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 that penetrates up and down is provided at the axial center position of the spring piston 2327. 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. 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. The butterfly screw hole plate 2351 is fixedly arranged at the upper end of the grinding pestle 235 through bolts. The grinding pestle 235 is rotatably arranged above the inside of the powder grinding chamber 2353 opened inside the rotary processing table 23. The distance between the lower surface of the powder grinding chamber 2353 and the grinding surface of the grinding pestle 235 gradually decreases from the centrifugal side to the centripetal side. A supply liquid channel 2352 is provided upward and open inside the grinding pestle 235. One end of the supply liquid channel 2352 penetrates and opens into the inside of the powder grinding chamber 2353. The lowest position at the left side of the chip collection groove 232 inside the rotary processing table 23 is provided with a chip discharge hole 2355 opening downward. The lower end of the chip discharge hole 2355 is inclined downward and communicates with the upper part of the inside of the powder grinding chamber 2353. A lifting door plate 2354 is slidably arranged along the inner wall of the chip discharge hole 2355 at the communication port between the chip discharge 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. Several drainage holes 2356 that penetrate through the rotary processing table 23 are linearly arranged in an array along the diameter at the lower part of the wall of the chip discharge hole 2355. The output ends of the drainage holes 2356 are connected to a pumping device through pipelines. At least one outwardly extended tongue plate 233 is fixedly arranged on the front side of the rotary processing table 23.

[0024] 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 to drive 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 grinding. The ground metal powder is output from the lower port of the grinding chamber 2353.

[0025] 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 grinding and crushing 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 cleaning of debris, 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.

[0026] 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 run 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; 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, during the downward movement of the spring piston rod 2322 on the front side (the spring piston rod 2322 close to the tongue plate 233), it will press the maintenance liquid in the connecting liquid pipe 2323, 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 screw surfaces 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 screw surfaces, the first feeding system 211 and the second feeding system 222 will respectively drive the first transfer seat 221 of the processing worktable 22 and the second transfer seat 234 of the rotary processing table 23 to slide along the ball screw, realizing the uniform coating of the maintenance liquid on the ball screw surfaces and achieving the synchronous maintenance of the ball screws. Then, the excess maintenance liquid dripping from the ball screw surfaces will fall on the surface of the lower grating 213 and drip into the diversion groove 212 inside the grating 213, and then flow out along the diversion groove 212 for recycling; 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 push 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 synchronously 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 synchronously 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 inside of 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 debris 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 pushed. When the opening condition of the one-way valve at the upper port of the one-way liquid channel 2328 at the axial 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 mixes with the metal debris being ground to assist in the grinding and subsequent processing of the metal debris. 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 suction 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; After the above work is carried out, the spring piston rods 2322 will move upward and reset under the action of the spring. The upward-moving spring piston rods 2322 will cause the connecting liquid pipe 2323 to return to its initial spatial size. Since the original introduced maintenance liquid and metal powder additives inside the connecting liquid pipe 2323 have been depressurized and discharged, in the absence of other substances introduced for supplementation, a negative pressure environment will appear inside the connecting liquid pipe 2323. Under negative pressure conditions, both the first one-way input liquid channel 2324 and the second one-way input liquid channel 2326 will open, temporarily connecting the inside of the connecting liquid pipe 2323 with the external supply equipment to supplement the maintenance liquid and metal powder additives, providing a raw material basis for the next droplet coating of the maintenance liquid and the injection of metal powder additives into the metal debris. The spring piston 2327 will also move upward and reset under the action of the spring, and synchronously drive the lifting door panel 2354 upward, releasing the closure of the communication channel between the chip discharge hole 2355 and the grinding chamber 2353, allowing the metal debris to fall into the inside of the grinding chamber 2353 until the workpiece processing is completed.

[0027] It should be noted that the above-mentioned external supply equipment, suction equipment, etc. can all be controlled to start and stop based on the reciprocating movement of the spring piston rod 2322; the maintenance liquid and metal powder additives can be selected according to actual situations. Among them, the metal powder additives can be selected as stable metal surface oxide film removal additives, stable additives added during metal powder metallurgy mixing, or stable non-conflicting mixed products of the above two additives.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present 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, arranged below the spindle system of the gantry machining frame; Among them, 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 opened inside the first transfer seat and the second transfer seat, and drip nozzles are fixedly arranged at both output ports of the maintenance liquid channels; Among them, the second transfer seat is connected to the lower surface of the rotary machining table by bolts. A chip collection groove is opened on the surface of the rotary machining table. An installation table is rotatably arranged at the axial center position inside the chip collection groove of the rotary machining table. An inclined surface ring plate is fixedly arranged on the lower surface of the installation table facing the chip collection groove. T-shaped pipes are symmetrically and fixedly arranged on the front and rear sides of the left-side annular path inside the chip collection groove body of the chip collection groove. A spring piston rod is slidably and limitably arranged inside the T-shaped pipe. The piston end of the spring piston rod slidably and sealingly penetrates into the communicating liquid pipe communicated with the T-shaped pipe. Among them, a first one-way input liquid channel and a one-way output liquid channel penetrating the rotary machining table are opened on the side surface of the diameter of the communicating liquid pipe located on the front side. A spring piston is slidably arranged 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 opened at the axial center position of the spring piston. A spiral belt rod is fixedly arranged at the lower end of the spring piston, and the spiral belt rod is spirally inserted into the screw hole at the center of the butterfly-shaped screw hole plate at the upper end of the grinding pestle. The grinding pestle is rotatably arranged above the inside of the powder grinding chamber opened inside the rotary machining table. A chip discharge hole is opened 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 communicated upward to the inside of the powder grinding chamber.

2. The rotary table and gantry machining center according to claim 1, characterized in that: The machine tool structure further includes a bed body. Guide rails are fixedly arranged on the surfaces of the bed boards on both sides above the bed body. The processing worktable is movably connected with the guide rails and the track wheels rolling on the lower surface of the processing worktable. A first feeding system is assembled on the surface of the bed body between the guide rails by bolts. The ball screw of the first feeding system is surface-driven with a first transfer seat, and the first transfer seat is connected to the lower surface of the processing worktable by bolts. Driven by the first feeding system, the processing worktable has the ability to move back and forth. Guide rails are also provided on the upper surfaces of the plates symmetrically arranged on the front and rear sides of the processing worktable. The processing worktable is movably connected with the rotary machining table by the guide rails and the track wheels rolling on the lower surface of the rotary machining table. A second feeding system is assembled on the surface of the processing worktable directly below the rotary machining table by bolts. The ball screw of the second feeding system is surface-driven with a second transfer seat. Driven by the second feeding system, the rotary machining table has the ability to move left and right. Shields for blocking cutting debris are provided on both the front and rear sides of the processing worktable.

3. A rotary table and a gantry machining center according to claim 1, characterized in that: 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 straight channels opened above the interiors 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 nozzle openings of the dripping nozzles are tapered from top to bottom, and the lower ends of the dripping nozzles are close to the lead screws 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: On the surfaces of the bed body and the processing workbench, diversion grooves opening upward are respectively provided below the lead screws of the first feeding system and the second feeding system, and the bottoms of the diversion grooves are inclined downward toward the output side. A sieve is fixedly covered at the upper port of the diversion groove, and the sieve protrudes upward in an obtuse angle shape.

5. A rotary table and a gantry machining center according to claim 1, characterized in that: The chip collection 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.

6. A rotary table and a gantry machining center according to claim 1, characterized in that: 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. Among them, the lower end of the spring presses against the lower surface inside the T-shaped pipe.

7. A rotary table and a gantry machining center according to claim 1, characterized in that: The ball end of the spring piston rod passes through the T-shaped pipe, and the spherical surface is always in rolling contact with the lower ring surface of the inclined surface ring plate.

8. A rotary table and a gantry machining center according to claim 1, characterized in that: 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 the opposite direction.

9. A rotary table and a gantry machining center according to claim 1, characterized in that: 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 extending and penetrating toward the centrifugal side is opened downward inside the connecting liquid pipe at the rear side. A one-way valve is assembled inside the second one-way input liquid channel.

10. A rotary table and a gantry machining center according to claim 1, characterized in that: The spring piston is composed of a piston rod and a spring sleeved on the piston rod, and the two ends of the spring respectively press 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. A supply liquid channel opening upward is provided inside the grinding pestle, and one end of the supply liquid channel penetrates and opens into the grinding chamber. A hole for discharging metal powder outward is provided at the bottommost part of the grinding chamber. 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 with the movement of the spring piston. A plurality of drainage and discharge holes penetrating the rotary processing table are linearly arrayed along the pipe diameter below the pipe 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 provided on the front side of the rotary processing table.

Images