Five-axis linkage false tooth engraving and milling machine

Abstract

The invention relates to the technical field of false tooth engraving and milling machines, and discloses a five-axis linkage false tooth engraving and milling machine which comprises a five-axis linkage false tooth engraving and milling machine body, a main shaft shell is arranged in the five-axis linkage false tooth engraving and milling machine body, and a fixing cover is fixedly arranged in the five-axis linkage false tooth engraving and milling machine body; a flexible movable cover is arranged at the top of the fixed cover, a through hole correspondingly connected with the main shaft shell is formed in the top of the movable cover, a sealing ring is arranged at the joint of the movable cover and the main shaft shell, and a collecting box is installed on the back face of the five-axis linkage false tooth engraving and milling machine body. The fixed cover and the movable cover are cooperatively sealed, the movable cover of the multi-layer folded organ pleat structure can tightly move along with the main shaft shell, a machining area is always highly sealed when equipment runs and the main shaft moves, cooling liquid splashing, metal or ceramic chip scattering and dust overflowing are effectively prevented, and the cleanliness of the working environment is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of denture carving and milling machines, in particular to a five-axis linkage denture carving and milling machine. Background Art

[0002] Five-axis linkage denture milling machines are core equipment for precision machining of dental prostheses. Coolant splashing, metal / ceramic debris diffusion, and dust pollution generated during high-speed cutting have always been technical difficulties affecting equipment cleanliness, operational stability, and operating environment safety.

[0003] After searching, a cooling structure for a horizontal five-axis linkage denture engraving and milling machine disclosed in application number 202323611907.5 includes a coolant tank, a collecting box is provided on one side of the coolant tank, an engraving and milling machine is provided on one side of the collecting box, a water pump is fixed on the top of the coolant tank, a guide tube is fixed on the water inlet pipe of the water pump, a bent pipe is fixed on the discharge pipe of the water pump, a cover plate is fixed on the top of the collecting box, two valves are fixed on the top of the cover plate, a connecting pipe is fixed on the valve close to the coolant tank, a branch pipe is fixed on the valve away from the coolant tank, a partition is fixed in the collecting box, outer frames are provided on both sides of the partition, first inner frames are fixed in the two outer frames, and a first filter screen, a second filter screen and a second inner frame are provided above the two first inner frames; the valve on the connecting pipe is opened, and the valve on the branch pipe is closed. When cleaning or replacing the first filter screen and the second filter screen below the connecting pipe, the first filter screen and the second filter screen below the branch pipe can be used to filter the coolant;

[0004] However, the above method still has the following defects in actual use: it optimizes the directional injection accuracy of the coolant by setting a fixed cooling ring and nozzle on the periphery of the spindle; however, its protective structure is statically fixed and cannot adapt to the multi-degree-of-freedom motion trajectory of the five-axis spindle, resulting in a large amount of coolant splashing into non-sealed areas due to centrifugal force during high-speed machining, requiring frequent shutdowns for cleaning. Summary of the Invention

[0005] The purpose of the present invention is to provide a five-axis linkage denture carving and milling machine with dynamic sealing to prevent splashing of coolant.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a five-axis linkage denture engraving and milling machine, comprising a five-axis linkage denture engraving and milling machine body, a spindle housing being provided inside the five-axis linkage denture engraving and milling machine body, a fixed cover being fixed inside the five-axis linkage denture engraving and milling machine body, a flexible movable cover being provided on the top of the fixed cover, and being composed of multiple layers of folded accordion pleats, a through hole being provided on the top of the movable cover corresponding to the spindle housing, and a sealing ring being provided at the connection between the movable cover and the spindle housing, a collection box being installed on the back of the five-axis linkage denture engraving and milling machine body through a mounting frame, and a cyclone separator being provided inside the collection box and being connected to the five-axis linkage denture engraving and milling machine body.

[0007] The present invention is further configured as follows: a mounting plate is fixedly provided at the bottom end of the fixed cover, and a mounting hole is provided on the surface of the mounting plate.

[0008] The present invention is further configured as follows: a mounting plate is fixedly provided at the bottom end of the movable cover, and the mounting plate is fixedly connected to the top end of the fixed cover via mounting bolts.

[0009] The present invention is further configured as follows: a loading and unloading groove is provided on the front of the fixed cover, telescopic grooves are provided on both sides of the loading and unloading groove, a double-leaf operating door is slidingly provided inside the telescopic groove, and a pulling handle is provided on the outer surface of the operating door, and a guide groove corresponding to the pulling handle is provided on the outer side surface of the telescopic groove.

[0010] The present invention is further configured such that magnetic adsorption strips are embedded on opposite sides of the operating door, and the two magnetic adsorption strips have opposite magnetic properties.

[0011] The present invention is further configured as follows: a cooling ring is fixedly provided inside the fixed cover, a nozzle is fixedly provided on the inner side of the cooling ring, and the nozzle is tilted downward, corresponding to the cutting position of the workpiece, a liquid inlet pipe is fixedly provided at the bottom of the cooling ring, and the end of the liquid inlet pipe passes through the fixed cover and is installed with a connecting hose, and the end of the connecting hose is placed on the outside of the five-axis linkage denture engraving and milling machine body and connected to the coolant pipeline.

[0012] The present invention is further configured as follows: the interior of the collection box is divided into a filter chamber and a waste collection chamber, an upper sealing plate 1 is embedded in the top of the filter chamber, an exhaust pipe is provided on the surface of the upper sealing plate 1, a lower sealing plate 1 is embedded in the bottom of the filter chamber, an upper sealing plate 2 is embedded in the top of the waste collection chamber, and a lower sealing plate 2 is embedded in the bottom of the waste collection chamber.

[0013] The present invention is further configured as follows: a limiting frame is fixedly provided inside the filter cavity, filter plate 1 and filter plate 2 are installed above the limiting frame, and filter plate 1 and filter plate 2 are connected by a mounting column.

[0014] The present invention is further configured as follows: the cyclone separator is arranged above the waste collection chamber, and the discharge end of the cyclone separator is connected to the middle of the upper sealing plate 2, and the air outlet end of the cyclone separator is connected to the bottom of the filter chamber through the air outlet pipe.

[0015] The present invention is further configured as follows: a dust suction pipe communicating with the interior of the fixed cover is fixedly provided on the side of the fixed cover, the dust suction pipe is connected to the connecting pipe, and an air inlet pipe is fixedly provided in the middle of one side of the connecting pipe, and one end of the air inlet pipe is connected to the air inlet end of the cyclone separator.

[0016] In summary, the present invention has the following beneficial effects: the fixed cover and the movable cover of the present invention cooperate to seal, the inclined cover wall design of the fixed cover guides the coolant to naturally return to the bottom, avoiding liquid accumulation, the multi-layer folded accordion pleat structure of the movable cover can closely follow the movement of the spindle housing, and a sealing ring is provided at the connection between the top of the movable cover and the spindle housing to ensure the tightness of the dynamic connection point. The combination of the two can always highly seal the processing area when the equipment is running (including when the spindle moves), effectively preventing coolant splashing, metal or ceramic debris flying and dust overflow, greatly improving the cleanliness of the working environment, protecting the internal components of the equipment, and reducing raw material waste; negative pressure dust collection and cyclone separation, the suction connected to the side of the fixed cover The dust pipe, connecting pipe and air inlet pipe suck the dust-laden gas (including dust, fine debris and cooling mist) in the processing chamber into the cyclone separator. The cyclone separator uses centrifugal force to quickly and efficiently perform preliminary separation on the dust-laden gas, and throws most of the granular waste chips into the waste chip collection chamber below; multi-stage filtration and purification exhaust gas, the gas preliminarily treated by the cyclone separator enters the filter chamber of the collection box through the air outlet pipe, a limit frame is set in the filter chamber, and the primary filter (filter plate 2) and the high-efficiency HEPA filter element (filter plate 1) are installed in turn to deeply filter the residual fine dust and oil mist, and the filtered clean air is safely discharged through the exhaust pipe (can be returned to the workshop or discharged outdoors), effectively protecting the workshop environment and the health of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional structural diagrams of the present invention;

[0018] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 3 This is one of the structural schematic diagrams of the five-axis linkage denture engraving and milling machine of the present invention after the main body is removed;

[0020] Figure 4 This is the second structural diagram of the five-axis linkage denture engraving and milling machine of the present invention after the main body is removed;

[0021] Figure 5 This is the third structural diagram of the five-axis linkage denture engraving and milling machine of the present invention after the main body is removed;

[0022] Figure 6 Schematic diagram of the cross-sectional structure of the fixed cover and the movable cover of the present invention;

[0023] Figure 7 This is one of the exploded structural diagrams of the collection box of the present invention;

[0024] Figure 8 This is the second schematic diagram of the explosion structure of the collection box of the present invention.

[0025] Figure: 1. Five-axis linkage denture milling machine body; 101. Spindle housing; 2. Fixed cover; 201. Mounting plate; 202. Mounting hole; 203. Loading and unloading slot; 204. Telescopic slot; 205. Operating door; 206. Pull handle; 207. Guide slot; 3. Movable cover; 301. Mounting plate; 302. Mounting bolt; 303. Through hole; 304. Sealing ring; 4. Cooling ring; 401. Nozzle; 402. Liquid inlet pipe ; 403, connecting hose; 5, collecting box; 501, mounting bracket; 502, upper sealing plate 1; 503, exhaust pipe; 504, filter plate 1; 505, filter plate 2; 506, mounting column; 507, limiting bracket; 508, upper sealing plate 2; 509, lower sealing plate 1; 5010, lower sealing plate 2; 6, cyclone separator; 601, air inlet pipe; 602, connecting pipe; 603, dust suction pipe; 604, air outlet pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] See also Figures 1 to 8In an embodiment of the present invention, a five-axis linkage denture engraving and milling machine includes a five-axis linkage denture engraving and milling machine body 1, a spindle housing 101 is provided inside the five-axis linkage denture engraving and milling machine body 1, a fixed cover 2 is fixedly provided inside the five-axis linkage denture engraving and milling machine body 1, and the cover wall of the fixed cover 2 is set as an inclined surface at a specific angle to guide the splashing coolant to flow back to the bottom naturally, and a flexible movable cover 3 is provided on the top of the fixed cover 2. The movable cover 3 is made of a special coated fabric or rubber composite material with high strength, wear resistance, coolant corrosion resistance, and aging resistance, and is composed of multiple layers of folded accordion pleats. A sealed cavity is formed between each layer by hot welding or high-frequency welding, and a through hole 303 corresponding to the spindle housing 101 is provided on the top of the movable cover 3. In addition, a sealing ring 304 is provided at the connection between the movable cover 3 and the spindle housing 101 to ensure the sealing of the connection, so that the movable cover 3 can dynamically follow when the spindle housing 101 moves, ensuring that the processing area is always in a highly sealed state when the equipment is running, preventing coolant splashing, debris flying and dust overflow. The movable cover 3 cooperates with the fixed cover 2 to form a relatively closed processing chamber, which provides the necessary environmental basis for negative pressure dust collection and coolant collection. The back of the five-axis linkage denture engraving and milling machine body 1 is installed with a collection box 5 through a mounting frame 501, and a cyclone separator 6 connected to the five-axis linkage denture engraving and milling machine body 1 is provided inside the collection box 5. The cyclone separator 6 is used to quickly separate and process the dust-laden gas.

[0028] In this embodiment, preferably, a mounting plate 201 is fixedly provided at the bottom end of the fixed cover 2, and a mounting hole 202 is provided on the surface of the mounting plate 201. The fixed cover 2 is mounted on the main frame of the machine tool so that it is located inside the machine tool shell, thereby covering the processing position of the machine tool and forming a basic sealed cavity.

[0029] In this embodiment, preferably, a mounting plate 301 is fixedly provided at the bottom end of the movable cover 3, and the mounting plate 301 is fixedly connected to the top end of the fixed cover 2 by mounting bolts 302, so that the movable cover 3 and the fixed cover 2 are connected together to ensure the sealing between the two;

[0030] In this embodiment, preferably, a loading and unloading groove 203 is provided on the front of the fixed cover 2, and telescopic grooves 204 are provided on both sides of the loading and unloading groove 203. A double-leaf operating door 205 is slidably provided inside the telescopic groove 204, and a pulling handle 206 is provided on the outer surface of the operating door 205. A guide groove 207 corresponding to the pulling handle 206 is provided on the outer side of the telescopic groove 204 to guide the movement of the operating door 205, so that the loading and unloading groove 203 can be used to quickly load and unload the workpiece;

[0031] In this embodiment, preferably, magnetic adsorption strips are embedded on opposite sides of the operating door 205. The two magnetic adsorption strips have opposite magnetic properties, and the magnetic adsorption between the two strips is used to limit the position of the operating door 205 and seal the interior of the fixed cover 2.

[0032] In this embodiment, preferably, a cooling ring 4 is fixedly provided inside the fixed cover 2, a nozzle 401 is fixedly provided on the inner side of the cooling ring 4, and the nozzle 401 is tilted downward, corresponding to the cutting position of the workpiece, a liquid inlet pipe 402 is fixedly provided at the bottom of the cooling ring 4, and the end of the liquid inlet pipe 402 passes through the fixed cover 2 and is installed with a connecting hose 403, the end of the connecting hose 403 is placed on the outside of the five-axis linkage denture engraving and milling machine body 1 and connected to the coolant pipeline, the coolant enters the cooling ring 4 through the liquid inlet pipe 402 and is sprayed downward through the nozzle 401 to cool the cutting tool;

[0033] In this embodiment, preferably, the interior of the collection box 5 is divided into a filter chamber and a waste collection chamber, the top of the filter chamber is embedded with an upper sealing plate 502, the surface of the upper sealing plate 502 is provided with an exhaust pipe 503, and the filtered clean air is discharged back to the workshop or outdoors, the bottom of the filter chamber is embedded with a lower sealing plate 509, and the impurities filtered in the filter chamber are cleaned after the lower sealing plate 509 is removed, the top of the waste collection chamber is embedded with an upper sealing plate 508, and the bottom of the waste collection chamber is embedded with a lower sealing plate 5010, and the waste in the waste collection chamber is cleaned after the lower sealing plate 5010 is removed;

[0034] In this embodiment, preferably, a limiting frame 507 is fixedly provided inside the filter chamber, and a filter plate 1 504 and a filter plate 2 505 are installed above the limiting frame 507, and the filter plate 1 504 and the filter plate 2 505 are connected by a mounting column 506 to filter the incoming gas. The filter plate 2 505 is a primary filter screen, and the filter plate 1 504 is a high-efficiency HEPA filter element, which can be quickly removed.

[0035] In this embodiment, preferably, the cyclone separator 6 is arranged above the waste collection chamber, and the discharge end of the cyclone separator 6 is connected to the middle of the upper sealing plate 508, and the air outlet end of the cyclone separator 6 is connected to the bottom of the filter chamber through the air outlet pipe 604. The cyclone separator 6 separates the incoming gas, and the separated particle waste is discharged into the waste collection chamber, and the separated gas enters the filter chamber for filtration.

[0036] In this embodiment, preferably, a dust suction pipe 603 communicating with the interior of the fixed cover 2 is fixedly provided on the side surface thereof, the dust suction pipe 603 is connected to the connecting pipe 602, and an air inlet pipe 601 is fixedly provided in the middle of one side of the connecting pipe 602, and one end of the air inlet pipe 601 is connected to the air inlet end of the cyclone separator 6, so that the dust-containing gas inside the fixed cover 2 can pass into the interior of the cyclone separator 6 for separation.

[0037] During use, the operator holds the pulling handle 206 of the operating door 205 and pulls it outward along the guide groove 207 to overcome the suction force of the magnetic adsorption strip, and slides the two split operating doors 205 open in the telescopic groove 204 to expose the loading and unloading groove 203. The denture blank or fixture to be processed is installed on the workbench through the loading and unloading groove 203, or the processed workpiece is taken out. After the loading and unloading is completed, the pulling handle 206 is pushed to slide the operating door 205 back to the closed position, and the magnetic adsorption strips on both sides are automatically adsorbed and locked to reseal the internal space of the fixed cover 2; the five-axis linkage is started, and the spindle housing 101 moves in multiple directions according to the processing program. The movable cover 3 can be expanded and contracted and deformed with the movement of the spindle housing 101 due to its flexible accordion pleated structure, and is always Maintaining the connection with the spindle housing 101 (the tightness of the dynamic sealing point is ensured by the through hole and the sealing ring 304), the bottom end of the movable cover 3 is fixed to the top of the fixed cover 2 through the mounting plate 301 and the mounting bolt 302 to form a sealed connection, and the fixed cover 2 is firmly mounted on the machine tool. The movable cover 3 and the fixed cover 2 together constitute a relatively closed processing chamber that can adapt to the dynamic movement of the spindle; the coolant enters the cooling ring 4 inside the fixed cover 2 through the external connecting hose 403 and the liquid inlet pipe 402, and the nozzle 401 on the inside of the cooling ring 4 is tilted downward to accurately spray the coolant to the cutting area where the high-speed rotating cutting tool contacts the workpiece, for effective cooling and auxiliary chip removal; the metal / ceramic debris, dust and parts generated during the processing The oil mist formed by the atomization of the cooling liquid is diffused in the closed processing chamber, and the dust collection system (usually a negative pressure is generated by an external fan) sucks the dust-containing gas in the processing chamber into the cyclone separator 6 through the dust collection pipe 603 (connected to the side of the fixed cover 2), the connecting pipe 602, and the air inlet pipe 601. Inside the cyclone separator 6, the dust-containing gas enters along the tangential direction and generates high-speed rotation. The dust and heavier debris particles are thrown to the wall of the device under the action of centrifugal force, and fall along the wall into the waste chip collection chamber below (falling through the connection between the discharge end of the cyclone separator 6 and the upper sealing plate 508); the gas that has been preliminarily purified by the cyclone separator 6 (which may still contain fine dust and oil mist) enters the collection box from the outlet end of the cyclone separator 6 through the outlet pipe 604. At the bottom of the filter chamber 5, the gas passes from bottom to top through the primary filter (filter plate 2 505) and the high-efficiency HEPA filter (filter plate 1 504) supported by the limit frame 507. The primary filter intercepts larger particles, while the HEPA filter efficiently captures submicron particles and oil mist. After two stages of filtration, the clean air is discharged through the exhaust pipe 503 at the top of the filter chamber. The solid particle waste separated by the cyclone separator 6 falls directly into the bottom of the waste chip collection chamber. The coolant that splashes during processing and is guided back to the bottom by the inclined wall of the fixed cover 2 may also carry some debris into the waste chip collection chamber or a dedicated coolant recovery channel (the figure does not clearly show the dedicated coolant recovery, but the inclined design facilitates backflow, which is usually required to be combined with a bottom drain port).After shutting down, open lower sealing plate 2 5010 at the bottom of the waste collection chamber to clean out any solid waste accumulated at the chamber bottom and any coolant residue that may have flowed in. Once cleaned, replace lower sealing plate 2 5010. When filtration efficiency decreases, open lower sealing plate 1 509 at the bottom of the filter chamber to access the assembly of filter plate 2 505 (primary filter) and filter plate 1 504 (HEPA filter element) connected by mounting posts 506. The entire assembly can be removed for cleaning (e.g., by tapping the primary filter) or direct replacement (especially of the HEPA filter element). After cleaning or replacement, place the filter assembly back on the retaining bracket 507 and replace lower sealing plate 1 509.

[0038] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A five-axis linkage denture carving and milling machine, comprising a five-axis linkage denture carving and milling machine body (1), wherein a spindle housing (101) is provided inside the five-axis linkage denture carving and milling machine body (1), characterized in that: A fixed cover (2) is fixedly provided inside the five-axis linkage denture engraving and milling machine body (1); a flexible movable cover (3) is provided on the top of the fixed cover (2) and is composed of multiple layers of accordion pleats; a through hole (303) correspondingly connected to the spindle housing (101) is provided on the top of the movable cover (3); and a sealing ring (304) is provided at the connection between the movable cover (3) and the spindle housing (101); a collection box (5) is installed on the back of the five-axis linkage denture engraving and milling machine body (1) through a mounting frame (501); and a cyclone separator (6) connected to the five-axis linkage denture engraving and milling machine body (1) is provided inside the collection box (5).

2. The five-axis linkage denture engraving and milling machine according to claim 1, characterized in that: A mounting plate (201) is fixedly provided at the bottom end of the fixed cover (2), and a mounting hole (202) is provided on the surface of the mounting plate (201).

3. The five-axis linkage denture engraving and milling machine according to claim 1, characterized in that: A mounting plate (301) is fixedly provided at the bottom end of the movable cover (3), and the mounting plate (301) is fixedly connected to the top end of the fixed cover (2) via mounting bolts (302).

4. The five-axis linkage denture engraving and milling machine according to claim 1, characterized in that: The front of the fixed cover (2) is provided with a loading and unloading groove (203), and telescopic grooves (204) are provided on both sides of the loading and unloading groove (203). A double-leaf operating door (205) is slidably provided inside the telescopic groove (204), and a pulling handle (206) is provided on the outer surface of the operating door (205). The outer side surface of the telescopic groove (204) is provided with a guide groove (207) corresponding to the pulling handle (206).

5. The five-axis linkage denture engraving and milling machine according to claim 4, characterized in that: Magnetic adsorption strips are embedded on opposite sides of the operating door 205 , and the two magnetic adsorption strips have opposite magnetic properties.

6. The five-axis linkage denture engraving and milling machine according to claim 1, characterized in that: A cooling ring (4) is fixedly provided inside the fixed cover (2), a nozzle (401) is fixedly provided on the inner side of the cooling ring (4), and the nozzle (401) is tilted downward, corresponding to the cutting position of the workpiece, an air intake pipe (402) is fixedly provided at the bottom of the cooling ring (4), and the end of the air intake pipe (402) passes through the fixed cover (2) and is installed with a connecting hose (403), and the end of the connecting hose (403) is placed outside the five-axis linkage denture engraving and milling machine body (1) and is connected to a compressed air pipeline.

7. The five-axis linkage denture engraving and milling machine according to claim 1, characterized in that: The interior of the collection box (5) is divided into a filter chamber and a waste collection chamber, the top of the filter chamber is embedded with an upper sealing plate (502), the surface of the upper sealing plate (502) is provided with an exhaust pipe (503), the bottom of the filter chamber is embedded with a lower sealing plate (509), the top of the waste collection chamber is embedded with an upper sealing plate (508), and the bottom of the waste collection chamber is embedded with a lower sealing plate (5010).

8. The five-axis linkage denture engraving and milling machine according to claim 7, characterized in that: A limiting frame (507) is fixedly provided inside the filter cavity, and filter plate 1 (504) and filter plate 2 (505) are installed above the limiting frame (507), and filter plate 1 (504) and filter plate 2 (505) are connected via a mounting column (506).

9. The five-axis linkage denture engraving and milling machine according to claim 7, characterized in that: The cyclone separator (6) is arranged above the waste collection chamber, and the discharge end of the cyclone separator (6) is connected to the middle of the upper sealing plate 2 (508), and the air outlet end of the cyclone separator (6) is connected to the bottom of the filter chamber through the air outlet pipe (604).

10. The five-axis linkage denture engraving and milling machine according to claim 1, characterized in that: A dust suction pipe (603) communicating with the interior of the fixed cover (2) is fixedly provided on the side surface thereof, the dust suction pipe (603) being connected to the connecting pipe (602), and an air inlet pipe (601) is fixedly provided in the middle of one side of the connecting pipe (602), one end of the air inlet pipe (601) being connected to the air inlet end of the cyclone separator (6).

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