A precision multi-axis CNC machine tool

Abstract

This invention relates to the field of precision machining technology, and more particularly to a precision multi-axis CNC machine tool, comprising: a machining center, wherein a moving mechanism and a spindle are arranged within the machining center; a cradle mechanism, wherein the cradle mechanism is arranged within the machine tool and is used for fixing and moving the workpiece, the cradle mechanism including a cradle rotatably connected to the moving mechanism and a clamping assembly arranged on the cradle; and an abrasive mechanism, wherein the abrasive mechanism is arranged on the cradle mechanism and is used for surface abrasive flow treatment of the machined workpiece, the abrasive mechanism including a heat dissipation assembly arranged on the cradle assembly, a partition assembly arranged on the heat dissipation assembly, and a receiving assembly arranged above the clamping mechanism. After machining, the receiving assembly moves downward and the partition assembly moves upward, forming a closed space on the inner surface of the workpiece for abrasive flow treatment. This invention solves the technical problems of machine housing deformation during clamping and difficulties in inner surface treatment.

Description

Technical Field

[0001] This invention relates to the field of precision machining technology, and in particular to a precision multi-axis CNC machine tool. Background Technology

[0002] The engine casing is a major load-bearing component of an aero-engine, a critical part that bears the load and encloses the engine, and is a typical thin-walled structural component. Its main functions are: protecting the engine core; providing support for externally mounted engine components such as the fuel pump, oil pump, generator, gearbox, and piping; and housing the stator and combustion chamber internally, forming an airflow channel together with the rotor assembly. Engine casings can be classified by function into fan casings, bypass casings, intermediate casings, compressor casings, and combustion chamber casings. Casing materials are mostly titanium alloys and high-temperature alloys, and high-precision dimensional and positional tolerances and thin-walled machining deformation must be carefully controlled during processing.

[0003] However, in actual use, the structure of the casing makes it difficult to process its inner surface in various ways, and it is also prone to deformation and surface damage, which affects the accuracy of the workpiece. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by combining the abrasive flow device with the workpiece clamping device through a cradle mechanism and an abrasive mechanism. This avoids damage to the workpiece during clamping and allows for direct internal processing of the abrasive flow process after machining, thereby solving the technical problems of casing deformation and difficulty in internal surface treatment.

[0005] To address the above technical issues, the following technical solution is adopted:

[0006] A precision multi-axis CNC machine tool, comprising:

[0007] A machining center, which contains a moving mechanism and a spindle;

[0008] A cradle mechanism is provided inside the machine tool and is used to fix and move the workpiece. The cradle mechanism includes a cradle rotatably connected to the moving mechanism and a clamping assembly provided on the cradle. The clamping assembly clamps and fixes the workpiece from the inner and outer walls and adjusts the angle of the workpiece through the cradle to cooperate with the machining operation of the machining center.

[0009] The abrasive mechanism is mounted on the cradle mechanism and is used to perform surface abrasive flow treatment on the processed workpiece. The abrasive mechanism includes a heat dissipation component mounted on the cradle assembly, a partition component mounted on the heat dissipation component, and a receiving component mounted above the clamping mechanism. After processing, the receiving component moves down and the partition component moves up, so that a closed space is formed on the inner surface of the workpiece for abrasive flow treatment.

[0010] Preferably, the clamping assembly includes an inner fixing component for clamping the workpiece inside, an outer fixing component for clamping the workpiece outside, and a flipping component for turning the workpiece. The inner fixing component includes a rotating disk rotatably connected to the cradle, a sliding rail vertically slidably connected to the rotating disk, multiple fixed disks slidably connected to the sliding rail and spliced ​​together, a moving block slidably connected to each set of fixed disks, a folding rod hinged to the upper part of the moving block, a pressure block set at the end of the folding rod, and an annular airbag set at the edge of the pressure block.

[0011] Preferably, the external fixing component includes multiple sets of sliding grooves on the outer side of the rotating disk, a notched ring slidably connected to the sliding groove and having a notch on one side, multiple sets of first telescopic rods slidably connected to the notched ring, and contact blocks rotatably connected to the telescopic rods.

[0012] Preferably, one end of the contact block is an inflation end and the other end is a winding end. An arc-shaped airbag is provided between the inflation end and the winding end of adjacent contact blocks. One end of the arc-shaped airbag is connected to an air pump provided at the inflation end, and the other end is wound around the rotating shaft of the winding end. A steering shaft is provided on the outside of both the inflation end and the winding end.

[0013] No arc-shaped airbag is installed at the position corresponding to the notch in the notch ring.

[0014] Preferably, the flipping component includes a lifting block vertically slidably connected to the cradle, a flipping plate rotatably connected to the lifting block, a second telescopic rod fixed to both ends of the flipping plate, a clamping block disposed at the end of the second telescopic rod, a plurality of suction cups fixed to the clamping block, and a plurality of rollers rotatably connected to the upper and lower surfaces of the clamping block.

[0015] Preferably, the heat dissipation assembly includes an isolation cylinder vertically slidably connected to the center of the rotating disk, a fan disposed in the middle of the isolation cylinder, multiple sets of nozzles disposed around the fan, and multiple sets of air guide plates rotatably connected to the upper end of the isolation cylinder.

[0016] Preferably, the separating assembly includes a grinding chamber rotatably connected to the isolation cylinder, a lower abrasive bin disposed below the grinding chamber, a sealing plate disposed at the edge of the grinding chamber, a mating groove disposed on the sealing plate, and a pop-out plate slidably connected inside the sealing plate and located below the mating groove.

[0017] Preferably, the separation assembly further includes a flow guide disposed in the grinding chamber and a drying component disposed on the isolation cylinder. The flow guide includes a swing rod rotatably connected to the side wall of the grinding chamber, multiple sets of spiral shafts rotatably connected to the middle of the swing rod, a dial plate rotatably connected to both sides of the swing rod, a through hole disposed at the upper end of the dial plate, and a baffle rotatably connected to the lower end of the through hole.

[0018] Preferably, the drying component includes a sliding strip vertically slidably connected to the outside of the grinding chamber, multiple sets of No. 1 jet nozzles disposed on the sliding adjustment, a shrink cylinder disposed at both ends of the swing arm, an air pipe slidably connected inside the shrink cylinder, and a No. 2 jet nozzle rotatably connected to the end of the air pipe.

[0019] As another preferred embodiment, the receiving assembly is fixed on the spindle of the machining center and includes a cover plate that is vertically slidably connected to the spindle, a sealing ring that is rotatably connected to the cover plate, an upper abrasive chamber disposed on the sealing ring, and an air ring disposed around the sealing ring.

[0020] The beneficial effects of this invention are:

[0021] (1) In this invention, by setting an internal fixing component, an inflatable airbag is used as an intermediate medium for contact between the clamp and the workpiece surface. When the airbag is fully inflated, it contacts the workpiece surface. On the one hand, the softness of the airbag is avoided, and the surface of the workpiece is not scratched. On the other hand, the fully inflated airbag is not prone to large deformation, so the workpiece can be stably clamped. The clamping position of the workpiece is located in the middle of the workpiece, which can effectively support the center of gravity of the workpiece and prevent the workpiece from bending and deforming due to its own weight when it is tilted.

[0022] (2) In this invention, by setting an external fastener, multiple arc-shaped airbags are used to clamp the workpiece from the outside to achieve the fixation of the workpiece. On the one hand, the fastening effect is guaranteed, and on the other hand, by using this clamping method, the clamping force of the fixture on the workpiece is distributed to the contact surface of the entire airbag, thereby avoiding the deformation such as dents that may be caused by multi-point clamping.

[0023] (3) In this invention, the abrasive mechanism is combined with the workpiece fixture to reduce the number of clamping times, improve the workpiece processing efficiency, and increase the processing range of the machine tool. In particular, for the development of the abrasive flow process in the workpiece, a slow rotation and local grinding method is adopted. On the one hand, the amount of abrasive used can be reduced, making the grinding more precise. On the other hand, multiple grinding chambers can be set up as needed, filled with different abrasives to achieve different grinding effects, increasing practicality.

[0024] In summary, this equipment has the advantages of a wide processing range, high production efficiency, small footprint, and ease of use, and is especially suitable for the field of casing processing technology. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1This is a schematic diagram of the overall structure of a precision multi-axis CNC machine tool.

[0027] Figure 2 This is a schematic diagram of the internal structure of a precision multi-axis CNC machine tool.

[0028] Figure 3 This is a schematic diagram of the internal fixation component.

[0029] Figure 4 This is a structural schematic diagram of the external fastener.

[0030] Figure 5 This is a schematic diagram of the relevant structure of the arc-shaped airbag.

[0031] Figure 6 This is a schematic diagram of the transmission operation of the flipping component.

[0032] Figure 7 This is a schematic diagram of the workpiece's machining status.

[0033] Figure 8 This is a schematic diagram of the heat dissipation component.

[0034] Figure 9 This is a schematic diagram of the relevant structure of the grinding chamber.

[0035] Figure 10 This is a schematic diagram of the relevant structure of the drying component.

[0036] Figure 11 for Figure 10 A magnified schematic diagram of the structure of A in the middle.

[0037] Figure 12 This is a schematic diagram of the working state of the flow guide.

[0038] Figure 13 This is a schematic diagram of the receiving component. Detailed Implementation

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] Example 1

[0041] like Figure 1 , Figure 2 As shown, a precision multi-axis CNC machine tool includes:

[0042] Machining center 0, which is equipped with a moving mechanism and a spindle;

[0043] Cradle mechanism 1, which is installed inside the machine tool and used to fix and move the workpiece, includes a cradle 11 rotatably connected to the moving mechanism and a clamping assembly 12 installed on the cradle 11. The clamping assembly 12 clamps and fixes the workpiece from the inner and outer walls and adjusts the angle of the workpiece through the cradle 11 to cooperate with the machining operation of the machining center 0.

[0044] Abrasive processing mechanism 2 is mounted on cradle mechanism 1 and is used to perform surface abrasive flow treatment on the processed workpiece. Abrasive processing mechanism 2 includes heat dissipation component 21 mounted on cradle 11 assembly, separation component 22 mounted on heat dissipation component 21 and receiving component 23 mounted above clamping mechanism. After processing, the receiving component 23 moves down and the separation component 22 moves up, so that the inner surface of the workpiece forms a closed space for abrasive flow treatment.

[0045] In this embodiment, by setting up a cradle mechanism 1 and an abrasive mechanism 2, the abrasive flow process is integrated into the production process for continuous processing. The abrasive flow related equipment is combined with tooling fixtures to avoid deformation of the workpiece caused by the fixtures during the clamping process.

[0046] In detail, during the machining of the casing, the workpiece needs to be fixed by tooling fixtures. Since the workpiece is a thin-walled structure, it is very easy for the workpiece to be deformed by the clamping force during the clamping process. In addition, as a precision workpiece, the casing has high requirements for surface treatment, and the fixture is also easy to scratch the surface of the workpiece during the clamping process.

[0047] Meanwhile, due to its special structure, the surface treatment of the inner surface of the workpiece is not easy to perform deburring, polishing and other processing processes. Based on this, this application adopts abrasive flow process for the treatment of the inner surface.

[0048] Abrasive flow polishing, also known as fluid polishing or extrusion abrasive polishing, is a polishing and deburring process primarily used for internal holes, micro-holes, irregular shapes, spherical surfaces, gears, etc. It is renowned for its high efficiency, thorough polishing and deburring, and lack of damage to the workpiece. Simply put, it's a polishing and deburring process using a semi-fluid medium, mainly for internal holes and irregularly shaped small to medium-sized workpieces. This process is suitable for surface treatment of the inner surface of workpieces. To reduce the risk of deformation caused by repeated clamping of the workpiece, the abrasive mechanism 2 is integrated into the cradle 11 framework for abrasive processing.

[0049] Besides workpiece deformation caused by workpiece clamping, heat generation occurs during workpiece machining and abrasive flow internal grinding, and inconsistent temperatures in different parts of the workpiece can also cause workpiece deformation.

[0050] It should be noted that the device combines the abrasive flow mechanism with the clamping mechanism and adds it to the machining center 0, thereby expanding the machining range of the machining center 0. After the workpiece is clamped, it can be directly subjected to abrasive flow machining, reducing the transfer between multiple devices and improving efficiency.

[0051] It is worth mentioning that the machining center 0 itself has the ability to process workpieces, such as milling, drilling, boring, etc., and to turn the workpieces. The machining center 0 is equipped with a moving mechanism and a spindle. The spindle processes the workpieces, and the moving mechanism controls the movement of the workpieces on the horizontal plane. The cradle mechanism 1 is set on the moving mechanism.

[0052] Furthermore, such as Figure 3 , Figure 7 As shown, the clamping assembly 12 includes an inner fixing member 121 for clamping the inside of the workpiece, an outer fixing member 122 for clamping the outside of the workpiece, and a flipping member 123 for turning the workpiece. The inner fixing member 121 includes a rotating disk 1211 rotatably connected to the cradle 11, a sliding rail 1212 vertically slidably connected to the rotating disk 1211, multiple fixed disks 1213 slidably connected to the sliding rail 1212 and assembled with each other, a moving block 1214 slidably connected to each group of fixed disks 1213, a folding rod 1215 hinged to the upper part of the moving block 1214, a pressure block 1216 provided at the end of the folding rod 1215, and an annular airbag 1217 provided at the edge of the pressure block 1216.

[0053] In this embodiment, by setting an inner fixing member 121 and an outer fixing member 122, an airbag is used to achieve multi-point fixation of the inner and outer surfaces of the workpiece. The inner fixing member 121 is equipped with a foldable and swingable folding rod 1215 to adapt to the structure of the workpiece and achieve a stable fixing effect.

[0054] In detail, the fixed plate 1213 slides and assembles into a complete ring on the sliding rail 1212. The workpiece is placed on the fixed plate 1213. At this time, the moving block 1214 is located inside the workpiece. The folding rod 1215 on the moving block 1214 unfolds, so that the pressure block 1216 fits against the inner surface of the workpiece. The annular airbag 1217 is inflated and fits against the inner surface of the workpiece to fix the workpiece.

[0055] It should be noted that, due to the high surface temperature during workpiece processing, the annular airbag 1217 uses a high-temperature airbag. The annular airbag 1217 can be equipped with a protective layer to protect the airbag. The airbag contacts the inner surface of the workpiece. The softness of the airbag can avoid scratching the inner surface of the workpiece. At the same time, the inflation of the airbag can also achieve stable fixation of the workpiece.

[0056] It is worth mentioning that a sliding groove is provided on the fixed plate 1213, and the sliding block slides on the sliding groove. When the folding rod 1215 is unfolded, it can support the inner wall of the workpiece. When the folding rod 1215 is folded, the pressure block 1216 and other structures can sink into the sliding groove and slide with the sliding block.

[0057] Furthermore, such as Figure 4 , Figure 5 , Figure 7 As shown, one end of the contact block 1224 is an inflation end 1225 and the other end is a winding end 1226. An arc-shaped airbag 1227 is provided between the inflation end 1225 and the winding end 1226 of the adjacent contact block 1224. One end of the arc-shaped airbag 1227 is connected to the air pump 1228 provided in the inflation end 1225, and the other end is wound around the rotating shaft 1229 of the winding end 1226. A steering shaft 1230 is provided on the outer side of both the inflation end 1225 and the winding end 1226.

[0058] No arc-shaped airbag 1227 is set at the position corresponding to the notch in the notch ring 1222.

[0059] In this embodiment, by setting an external fixing member 122 and using multiple sets of arc-shaped airbags 1227, the workpiece is clamped from the outside, and in conjunction with the internal fixing member 121, the workpiece is stably clamped.

[0060] In detail, after the workpiece is fixed inside, the first telescopic rod 1223 extends and the contact block 1224 approaches the workpiece. At this time, the winding end 1226 tightens the arc-shaped airbag 1227, and the inflation end 1225 inflates the arc-shaped airbag 1227, causing the arc-shaped airbag 1227 to expand and tightly clamp the outer surface of the workpiece, thereby fixing the outside of the workpiece.

[0061] It should be noted that in the prior art, workpieces are often fixed by clamping one end of the workpiece at multiple points. Since the workpiece in this application has a thin-walled structure, the clamping force is concentrated on the contact surface between the clamp and the workpiece when using multiple points, which can easily cause deformation. Based on this, the outer fixing member 122 uses multiple arc-shaped airbags 1227. The workpiece is fixed by the fastening of multiple arc-shaped airbags 1227, which increases the contact area and avoids scratches and deformation of the workpiece. At the same time, when one end of the workpiece is fixed, if the workpiece needs to be processed laterally, the outer end of the workpiece will also deform due to its own weight and temperature. The method of clamping with arc-shaped airbags 1227 and the clamping of the middle position of the workpiece by the inner and outer fixing members 122 can avoid this deformation.

[0062] It is worth mentioning that the notched ring 1222 is rotatably connected to the slide groove 1221. The notched ring 1222 is provided with notches. When the workpiece needs to be processed laterally, the notch rotates to the side that needs to be processed, which facilitates the processing of the spindle and will not cause interference.

[0063] Since the workpiece needs to be flipped during the process, and the workpiece is trumpet-shaped with different diameters at both ends, the length of the arc-shaped airbag 1227 can be effectively controlled by the telescopic rod and the rewind shaft to match the diameter of the workpiece. Correspondingly, the angle of rotation of the folding rod 1215 is controlled within the inner fixing member 121 to make the pressure block 1216 match the flipping of the workpiece and fix the workpiece.

[0064] Furthermore, such as Figure 6 As shown, the flipping component 123 is located on both sides of the rotating disk 1211 and includes a lifting block 1231 vertically slidably connected to the cradle 11, a flipping plate 1232 rotatably connected to the lifting block 1231, a second telescopic rod 1233 fixed at both ends of the flipping plate 1232, a clamping block 1234 disposed at the end of the second telescopic rod 1233, a plurality of suction cups 1235 fixed to the clamping block 1234, and a plurality of rollers 1236 rotatably connected to the upper and lower surfaces of the clamping block 1234.

[0065] In this embodiment, the flipping component 123 is used to rotate the two ends of the workpiece vertically, thereby adapting it to different processing parts of the workpiece.

[0066] In detail, the second telescopic rod 1233 extends, causing the suction cup 1235 to adhere to the surface of the workpiece, the lifting block 1231 rises, and at the same time the flipping plate 1232 rotates, realizing the flipping of the upper and lower ends of the workpiece. The inner fixing part 121 and the outer fixing part 122 re-clamp each other, and the lower end roller 1236 of the blower contacts the upper end of the workpiece at this time.

[0067] It should be noted that, due to the processing requirements of the workpiece, the workpiece position needs to be reversed when processing both ends of the workpiece. Here, a suction cup 1235 is used to clamp the workpiece, and the suction cup 1235 is fixed to the clamping block 1234 by an elastic element to ensure that the clamping process is stable and will not fall off, thus avoiding scratching the workpiece and causing deformation.

[0068] When machining a workpiece, the larger opening is first turned upwards, and then the smaller opening is turned upwards by flipping it over. After machining, it can be directly subjected to abrasive flow processing to improve efficiency.

[0069] It is worth mentioning that, since the airbags of the inner fixing member 121 and the outer fixing member 122 have a certain elasticity, the workpiece may vibrate during the processing, which may lead to inaccurate positioning. Therefore, a clamping block 1234 is set. After the flipping is completed, the clamping block 1234 presses down on the upper end of the workpiece and uses the downward pressure to stabilize the workpiece and compensate for the possible vibration of the inner and outer fixing members 122.

[0070] Furthermore, such as Figure 8As shown, the heat dissipation assembly 21 includes an isolation cylinder 211 vertically slidably connected to the center of the rotating disk 1211, a fan 212 disposed in the middle of the isolation cylinder 211, multiple sets of nozzles 213 disposed around the fan 212, and multiple sets of air guide plates 214 rotatably connected to the upper end of the isolation cylinder 211.

[0071] In this embodiment, by setting up a fan 212 and a guide plate 214, the cutting fluid is sprayed onto the workpiece in the form of droplets. The cutting fluid and the air force work together to achieve rapid cooling of the workpiece, so that the temperature of the workpiece is uniform throughout the processing.

[0072] In detail, the fan 212 blows air upwards while simultaneously spraying water mist from droplets. The air guide plate 214 controls the flow direction of the water mist, which can precisely control the flow of excess water mist to the part being processed, thereby achieving rapid cooling and ensuring that the temperature of other parts is consistent.

[0073] Spraying water onto the workpiece surface can form a water film between the annular airbag 1217 and the arc-shaped airbag 1227 and the workpiece, reducing the possibility of airbag damage.

[0074] Furthermore, such as Figure 7 , Figure 9 As shown, the separating component 22 includes a grinding chamber 221 rotatably connected to the isolation cylinder 211, a lower abrasive chamber 222 disposed below the grinding chamber 221, a sealing plate 223 disposed at the edge of the grinding chamber 221, a mating groove 224 disposed on the sealing plate 223, and a pop-out plate 225 slidably connected inside the sealing plate 223 and located below the mating groove 224.

[0075] In this embodiment, a processing cavity for abrasive flow is formed by setting up a grinding chamber 221 and a sealing plate 223.

[0076] In detail, after the isolation cylinder 211 rises, the sealing plate 223 on the side wall of the grinding chamber 221 pops out and contacts the inner surface of the workpiece. At the same time, due to the presence of the mounting ring inside the workpiece, a mating groove 224 is set on the sealing plate 223. The pop-out plate 225 continues to pop out, sealing the inside of the mounting ring as well. The lower abrasive chamber 222 is set below the grinding chamber 221. The abrasive enters the grinding chamber 221 from the lower abrasive chamber 222. At this time, the outer side of the grinding chamber 221 is the inner surface of the workpiece. The abrasive grains treat the inner surface of the workpiece. At the same time, the grinding chamber 221 continues to rotate, and the inner surface of the workpiece is completely ground.

[0077] The shape of the grinding chamber 221 is designed to fit the workpiece, and is a trumpet shape with a narrow top and a wide bottom to facilitate the flow of subsequent abrasive. At the same time, when the grinding cylinder rises, the fixed plate 1213 moves outward along the sliding rail, and the folding rod 1215 folds and sinks into the sliding groove to remove the workpiece, so as to avoid interference with the isolation cylinder 211.

[0078] It should be noted that by rotating the grinding chamber 221, a portion of the workpiece can be processed. As the rotation progresses, complete processing is achieved. This method reduces the demand for abrasives and increases their fluidity. Due to the presence of the mounting ring inside the workpiece, rotation causes the abrasive to flow within the mounting ring, assisting in grinding and improving the precision of the grinding.

[0079] It is worth mentioning that multiple grinding chambers 221 can be set up according to needs, each using different abrasives to achieve different processing effects.

[0080] Furthermore, such as Figure 10 , Figure 11 , Figure 12 As shown, the separation assembly 22 also includes a flow guide 226 disposed in the grinding chamber 221 and a drying component 227 disposed on the isolation cylinder 211. The flow guide 226 includes a rocker arm 2261 rotatably connected to the side wall of the grinding chamber 221, multiple sets of spiral shafts 2262 rotatably connected to the middle of the rocker arm 2261, a deflector plate 2263 rotatably connected to both sides of the rocker arm 2261, a through hole 2264 disposed at the upper end of the deflector plate 2263, and a baffle plate 2265 rotatably connected to the lower end of the through hole 2264.

[0081] In this embodiment, the abrasive is made to flow in the mounting ring by the spiral shaft 2262 and the deflector 2263, so as to avoid the abrasive being obstructed by the mounting ring and the abrasive being unable to thoroughly grind and polish the inside of the mounting ring.

[0082] In detail, after the abrasive enters the grinding chamber 221, the swing arm 2261 swings and rotates to the position below the workpiece mounting ring. The spiral shaft 2262 rotates, filling the mounting ring with abrasive. The two side plates 2263 move back and forth. When the plates 2263 are pushed outward, the abrasive is dug out of the mounting ring. When the plates 2263 are pushed inward, the through hole 2264 and the baffle 2265 open, allowing the abrasive to pass through and move to both ends of the mounting ring.

[0083] It should be noted that the abrasive can enter the mounting ring from the middle through the spiral shaft 2262 and the deflector 2263, and then move to both ends through the spiral shaft 2262 and move out from both ends through the deflector 2263, thereby realizing the movement of the abrasive within the mounting ring and avoiding the abrasive from not being able to flow within the mounting ring, thus preventing grinding dead corners.

[0084] Furthermore, such as Figure 10 , Figure 11As shown, the drying component 227 includes a sliding strip 2271 vertically slidably connected to the outside of the grinding chamber 221, multiple sets of No. 1 jet nozzles 2272 disposed on the sliding strip 2271, a shrink cylinder 2273 disposed at both ends of the swing rod 2261, an air pipe 2274 slidably connected to the shrink cylinder 2273, and a No. 2 jet nozzle 2275 rotatably connected to the end of the air pipe 2274.

[0085] In this embodiment, a drying element 227 is provided to process the digital data on the inner surface of the workpiece before abrasive treatment.

[0086] In detail, after the isolation cylinder 211 rises, the sliding bar 2271 slides up and down on the isolation cylinder 211, using the No. 1 air nozzle on it to blow dry the water stains on the inner surface. The air pipes 2274 at both ends of the swing rod 2261 extend from the shrink cylinder 2273. Multiple No. 2 air nozzles 2275 are provided at the ends of the air pipes 2274. The rotation of the No. 2 air nozzles 2275 is used to quickly dry the water stains on the inner surface of the isolation chamber.

[0087] It should be noted that after grinding in the grinding chamber 221, the air pipe 2274 retracts into the shrink cylinder 2273 to prevent the abrasive from damaging the air pipe 2274.

[0088] Furthermore, such as Figure 13 As shown, the receiving component 23 is fixed on the spindle of the machining center and includes a cover plate 231 vertically slidably connected to the spindle, a sealing ring 232 rotatably connected to the cover plate 231, an upper abrasive chamber 233 disposed on the sealing ring 232, and an air ring 234 disposed around the sealing ring 232.

[0089] In this embodiment, by setting a sealing ring 232 and an upper abrasive chamber 233, a seal is formed on the upper part of the grinding chamber 221, thereby forming a complete closed space for the flow of abrasive.

[0090] In detail, after the isolation cylinder 211 rises, the moving mechanism places the cradle mechanism 1 below the receiving component 23, the cover plate 231 moves down and contacts the top of the isolation cylinder 211, and at the same time the sealing ring 232 contacts the grinding chamber 221. The sealing ring 232 also rotates with the grinding chamber 221, and the upper abrasive chamber 233 and the lower abrasive chamber 222 cooperate to perform abrasive flow grinding.

[0091] It should be noted that an air ring 234 is set outside the sealing ring 232, which works in conjunction with the fan 212 inside the isolation cylinder 211 to quickly cool down the workpiece. Since the grinding chamber 221 rotates and grinds a part of the workpiece at the same time, the temperature at the grinding position is higher than that at other positions. Therefore, the air ring 234 is set at the same time to quickly dissipate the heat at this position and avoid workpiece deformation caused by heat.

[0092] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0093] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0094] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A precision multi-axis CNC machine tool, characterized in that, include: Machining center (0), which contains a moving mechanism and a spindle; Cradle mechanism (1), the cradle mechanism (1) is set in the machine tool and is used to fix and move the workpiece. The cradle mechanism (1) includes a cradle (11) rotatably connected to the moving mechanism and a clamping assembly (12) set on the cradle (11). The clamping assembly (12) clamps and fixes the workpiece from the inner and outer walls, and adjusts the angle of the workpiece through the cradle (11) to cooperate with the machining operation of the machining center (0). Abrasive mechanism (2), which is set on cradle mechanism (1) and used to perform surface abrasive flow treatment on the processed workpiece. Abrasive mechanism (2) includes heat dissipation component (21) set on cradle (11) assembly, separation component (22) set on heat dissipation component (21) and receiving component (23) set above clamping mechanism. After processing, the receiving component (23) moves down and the separation component (22) moves up, so that the inner surface of the workpiece forms a closed space for abrasive flow treatment. The separating component (22) includes a grinding chamber (221) rotatably connected to the isolation cylinder (211), a lower abrasive chamber (222) disposed below the grinding chamber (221), a sealing plate (223) disposed at the edge of the grinding chamber (221), a mating groove (224) disposed on the sealing plate (223), and a pop-out plate (225) slidably connected inside the sealing plate (223) and located below the mating groove (224). Multiple grinding chambers (221) are provided, which can be filled with different abrasives to achieve different grinding effects. The separation assembly (22) also includes a flow guide (226) disposed in the grinding chamber (221) and a drying component (227) disposed on the isolation cylinder (211). The flow guide (226) includes a rocker arm (2261) rotatably connected to the side wall of the grinding chamber (221), multiple sets of spiral shafts (2262) rotatably connected to the middle of the rocker arm (2261), a deflector plate (2263) rotatably connected to both sides of the rocker arm (2261), a through hole (2264) disposed at the upper end of the deflector plate (2263), and a baffle plate (2265) rotatably connected to the lower end of the through hole (2264). The drying component (227) includes a sliding strip (2271) vertically slidably connected to the outside of the grinding chamber (221), multiple sets of No. 1 jet nozzles (2272) set on the sliding strip, a shrink cylinder (2273) set at both ends of the swing arm (2261), an air pipe (2274) slidably connected in the shrink cylinder (2273), and a No. 2 jet nozzle (2275) rotatably connected to the end of the air pipe (2274).

2. The precision multi-axis CNC machine tool according to claim 1, characterized in that, The clamping assembly (12) includes an inner fixing member (121) for clamping the inside of the workpiece, an outer fixing member (122) for clamping the outside of the workpiece, and a flipping member (123) for turning the workpiece. The inner fixing member (121) includes a rotating disk (1211) rotatably connected to the cradle (11), a sliding rail (1212) vertically slidably connected to the rotating disk (1211), multiple fixed disks (1213) slidably connected to the sliding rail (1212) and assembled with each other, a moving block (1214) slidably connected to each group of fixed disks (1213), a folding rod (1215) hinged to the upper part of the moving block (1214), a pressure block (1216) set at the end of the folding rod (1215), and an annular airbag (1217) set at the edge of the pressure block (1216).

3. A precision multi-axis CNC machine tool according to claim 2, characterized in that, The external fixing component (122) includes a sliding groove (1221) above the outer side of multiple sets of rotating disks (1211), a notched ring (1222) slidably connected to the sliding groove (1221) and having a notch on one side, multiple sets of first telescopic rods (1223) slidably connected to the notched ring (1222) horizontally, and a contact block (1224) rotatably connected to the telescopic rod.

4. A precision multi-axis CNC machine tool according to claim 3, characterized in that, One end of the contact block (1224) is an inflation end (1225), and the other end is a winding end (1226). An arc-shaped airbag (1227) is provided between the inflation end (1225) and the winding end (1226) of the adjacent contact block (1224). One end of the arc-shaped airbag (1227) is connected to the air pump (1228) provided on the inflation end (1225), and the other end is wound around the rotating shaft (1229) of the winding end (1226). A steering shaft (1230) is provided on the outside of both the inflation end (1225) and the winding end (1226). No arc-shaped airbag (1227) is set at the position corresponding to the notch ring (1222).

5. A precision multi-axis CNC machine tool according to claim 2, characterized in that, The flipping component (123) is located on both sides of the rotating disk (1211) and includes a lifting block (1231) vertically slidably connected to the cradle (11), a flipping plate (1232) rotatably connected to the lifting block (1231), a second telescopic rod (1233) fixed at both ends of the flipping plate (1232), a clamping block (1234) provided at the end of the second telescopic rod (1233), a plurality of suction cups (1235) fixed to the clamping block (1234), and a plurality of rollers (1236) rotatably connected to the upper and lower surfaces of the clamping block (1234).

6. A precision multi-axis CNC machine tool according to claim 1, characterized in that, The heat dissipation assembly (21) includes an isolation cylinder (211) vertically slidably connected to the center of the rotating disk (1211), a fan (212) set in the middle of the isolation cylinder (211), multiple sets of nozzles (213) set around the fan (212), and multiple sets of air guide plates (214) rotatably connected to the upper end of the isolation cylinder (211).

7. A precision multi-axis CNC machine tool according to claim 1, characterized in that, The receiving component (23) is fixed on the spindle of the machining center (0) and includes a cover plate (231) vertically slidably connected to the spindle, a sealing ring (232) rotatably connected to the cover plate (231), an upper abrasive chamber (233) provided on the sealing ring (232), and an air ring (234) provided around the sealing ring (232).

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