A processing apparatus for a magnetic resonance device support

Abstract

The application discloses a machining device for a magnetic resonance device support, and belongs to the field of support machining. The machining device is used for solving the problem that impurities are difficult to be completely removed after conventional wiping and simple flushing because the adhesion of the impurities is greatly enhanced after solidification, the cleaning operation difficulty of a workpiece is greatly improved, labor and working hour costs are increased, and impurity residues are prone to occur. The machining device comprises a base, a clamp arranged above the base, and a cutting tool arranged above the clamp. The clamp is characterized by a sealing plate arranged outside the clamp. The sealing plate is synchronously rotated with the cutting tool to perform online cleaning on a region just finished with cutting, so that the impurities are prevented from being dried, adhered and solidified with the prolongation of standing time, and the effect of preventing subsequent cleaning difficulty and improving overall production efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of support processing, in particular to a processing equipment for a support of a magnetic resonance device. BACKGROUND

[0002] The support ring of the magnetic resonance device is a core supporting structure, which is in a ring shape, and the regularity of the structure and the surface cleanliness directly affect the subsequent transfer, storage, assembly and docking of the workpiece and the working condition of the whole machine. At present, after the cutting processing of the support ring is completed, the conventional post-processing and natural standing are generally used, and the post-processing technology is relatively extensive, which has many hidden troubles and process defects in the production site.

[0003] During the cutting process of the workpiece, a large amount of metal debris, machining oil stains and cutting impurities will inevitably remain on the surface, corners and joint gaps of the workpiece. If the cutting is not timely closed, protected and cleaned after the work, the various impurities attached to the surface of the workpiece will gradually dry, stick and solidify in the surface layer and the gap inside as the standing time is prolonged. Compared with the immediate cleaning after processing, the adhesion of the solidified impurities is greatly enhanced, and the conventional wiping and simple rinsing method cannot completely remove them, especially for the cleaning of the outer peripheral ring area of the workpiece, because the area is large, the curvature is continuous and it is in a naked state, which is the most easily attached and solidified part of the impurities, and the cleaning difficulty is particularly prominent. Not only does it greatly increase the cleaning operation difficulty of the workpiece, increase the labor and time cost, but also it is easy to cause impurity residue.

[0004] At the same time, the workpiece after cutting is directly placed in the workshop environment, and the dust and debris floating in the workshop are easy to attach to the surface of the workpiece again, especially the outer peripheral area of the workpiece, which has the largest exposed area and the most sufficient contact with the outside world, and the secondary pollution is the most serious, which further aggravates the dirt problem of the workpiece and continuously damages the cleanliness of the surface of the workpiece. SUMMARY

[0005] The purpose of the present application is to provide a processing equipment for a support of a magnetic resonance device, which solves the problem that the adhesion of the solidified impurities is greatly enhanced after immediate cleaning after processing, and the conventional wiping and simple rinsing method cannot completely remove them, which not only greatly increases the cleaning operation difficulty of the workpiece, increases the labor and time cost, but also easily causes impurity residue.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a processing equipment for a support of a magnetic resonance device, comprising a base, a clamp arranged above the base and a cutting tool arranged above the clamp, a sealing plate is arranged on the outer side of the clamp, a cleaning tank is arranged on the outer side of the sealing plate, the sealing plate and the cleaning tank are communicated through a water pipe, a pushing mechanism is arranged on the outer side of the sealing plate, a rotating mechanism is arranged below the pushing mechanism, and an elastic mechanism is arranged in the sealing plate. The sealing plate is used for synchronous rotation with the cutting tool to clean the area just finished cutting; the pushing mechanism is used for driving the sealing plate to adhere to the workpiece and maintaining the positive pressure in the sealing cavity; the rotating mechanism is used for driving the sealing plate to rotate around the workpiece; and the elastic mechanism is used for automatically releasing pressure when the pressure in the cavity exceeds a set threshold.

[0007] Preferably, the side close to the clamp of the sealing plate is fixedly connected with a rubber pad for forming a sealing buffer when adhering to the workpiece.

[0008] Preferably, the elastic mechanism comprises a sleeve fixedly connected to the outer side of the sealing plate, a support plate fixedly connected to the inner side of the sleeve, a vent hole communicating the sleeve and the sealing plate, a spring fixedly connected to the side close to the sealing plate of the support plate, and a baffle fixedly connected to the end close to the sealing plate of the spring. The inside of the vent hole is provided with a hole; The baffle is spherical, and its diameter is greater than the width of the hole, for being pushed away to release pressure when the pressure in the cavity exceeds the threshold.

[0009] Preferably, the rotating mechanism comprises a rotating motor fixedly connected to the lower surface of the base, a first gear fixedly connected to the output end of the rotating motor, a gear ring meshingly connected to the outer side of the first gear, a protective cover provided on the outer side of the first gear and the gear ring, and a rotating support ring provided above the protective cover. The rotating support ring is fixedly connected with the gear ring for driving the pushing mechanism and the sealing plate to synchronously rotate.

[0010] Preferably, the pushing mechanism comprises an electric push rod fixedly connected above the rotating support ring, a second hole opened on the side close to the electric push rod of the sealing plate, and a pressing plate nested in the inner side of the second hole and fixedly connected with the output end of the electric push rod. The outer side surface of the pressing plate is adhered to the inner side surface of the sealing plate. The outer side surface of the output end of the electric push rod is adhered to the inner side surface of the second hole.

[0011] Preferably, the pushing mechanism further comprises a sliding groove provided in the inner side of the output end of the electric push rod, a spring fixedly connected to the output end of the electric push rod and provided in the inner side of the sliding groove, and a sliding block fixedly connected to the sealing plate and slidingly provided in the sliding groove. The central axis of the sliding groove is parallel to the central axis of the electric push rod, for transmitting the pressure to the sealing plate through the spring and the sliding block when the electric push rod is pushed, and continuing to compress the spring to establish the positive pressure in the sealing cavity after the sealing plate contacts the workpiece.

[0012] Preferably, one end of the sealing plate is communicated with an air pipe, and the other end of the air pipe is communicated with a hot air blower, for drying the inner side of the sealing plate after cleaning.

[0013] The hot air machine is preferably used to cooperate with the low pressure positive pressure in the sealed cavity in the drying stage, to push the directional flow of hot air and penetrate into the fine gap.

[0014] The pushing mechanism is preferably used to continue pushing after the sealing plate is attached to the workpiece, so that a predetermined pressure positive pressure sealing cavity is formed between the sealing plate and the workpiece, to prolong the contact time of the cleaning liquid with the workpiece and drive the cleaning liquid to penetrate into the gap.

[0015] The pressure at which the baffle of the elastic mechanism opens to release pressure is preferably set as a safety threshold, to automatically release pressure when the pressure in the cavity exceeds the threshold, to avoid damage to the workpiece.

[0016] 1. Compared with the prior art, the beneficial effects of the present application are that the sealing plate and the cutting tool are synchronously rotated to perform online cleaning on the area just finished cutting, to avoid impurities from drying, adhering and solidifying as the standing time is prolonged, so that the effect of preventing subsequent cleaning difficulties from the source and improving overall production efficiency is achieved.

[0017] 2. The positive pressure in the sealed space surrounded by the sealing plate and the workpiece offsets the effect of gravity, so that the effective contact time of the cleaning liquid on the surface of the workpiece is prolonged, so that the effect of accelerating the softening and falling off of impurities such as oil stains and debris is achieved.

[0018] 3. The positive pressure drives the cleaning liquid to penetrate into the gap along the surface structure of the workpiece, and elastically expands the gap, so that the stubborn impurities hidden therein lose the attachment support, so that the effect of greatly improving the impurity removal efficiency in the gap is achieved.

[0019] 4. The local sealed cavity formed by the sealing plate uniformly applies pressure to the corresponding area of the workpiece, so that the overall stress of the workpiece is balanced, so that the effect of avoiding deformation, material deviation or unilateral opening of the gap caused by uneven local stress is achieved, while the cleaning effect is improved and the appearance of the workpiece is stable.

[0020] 5. When the pressure in the cavity exceeds the set threshold, the baffle automatically opens to release pressure, so that the pressure falls back to the safety range, so that the effect of avoiding permanent damage such as plastic deformation or surface indentation of the workpiece caused by excessive pressure on the inside of the sealing plate is achieved.

[0021] 6. After cleaning is completed, the hot air machine dries the inside of the sealing plate through the air pipe, and the cavity maintains low pressure positive pressure, to push the directional flow of hot air and penetrate into the fine gap, so that the effects of quickly and completely removing residual cleaning liquid, reducing corrosion and improving drying efficiency are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present application; Figure 2 is a schematic diagram of the appearance structure of the hot air machine of the present application; Figure 3 Fig. 1 is a schematic view of the top structure of the hot air blower of the present application; Figure 4 Fig. 2 is a schematic view of the structure at A in Fig. 1; Figure 3 Figure 5 Fig. 3 is a schematic view of the structure at B in Fig. 1; Figure 3 Figure 6 Fig. 4 is a schematic view of the top structure of the gear ring of the present application; Figure 7 Fig. 5 is a schematic view of the left sectional structure of the protective cover of the present application; Figure 8 Fig. 6 is a schematic view of the left sectional structure of the sealing plate of the present application.

[0023] In the figure: 1, base; 2, clamp; 3, cutting tool; 4, sealing plate; 5, cleaning tank; 6, water pipe; 7, pushing mechanism; 8, rotating mechanism; 9, elastic mechanism; 10, rubber pad; 11, hot air blower; 71, electric push rod; 72, second hole; 73, pressing plate; 74, sliding groove; 75, spring; 76, sliding block; 81, rotating motor; 82, first gear; 83, gear ring; 84, protective cover; 85, rotating support ring; 91, sleeve; 92, support plate; 93, air hole; 94, spring; 95, baffle; 10, air pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application Please refer to Figures 1-8 The present application provides that an operator places the magnetic resonance device support in the inside of the annular mounting seat of the clamp 2, and drives the plurality of clamping claws to move centripetally synchronously by starting the clamping cylinder, so as to radially clamp and fix the workpiece. After the clamping of the workpiece is completed, the cutting tool 3 is rotated by starting the main shaft of the machine tool, so as to cut the annular outer peripheral surface of the support. In the cutting process, the cutting tool 3 gradually feeds along the outer periphery of the workpiece, removes the excess material, and forms the final profile.

[0025] ​​After the cutting tool 3 finishes cutting a region, it does not stop immediately, but remains in the cutting state. At the same time, the rotating motor 81 is started, the tooth ring 83 is driven to rotate by the first gear 82, the rotating support ring 85 is driven to rotate by the tooth ring 83, and then the electric push rod 71 and the sealing plate 4 fixedly connected above the rotating support ring 85 are synchronously rotated. The sealing plate 4 keeps the same rotational angular velocity and phase as the cutting tool 3, so that the sealing plate 4 is always aligned with the machining region just finished cutting. When the cutting tool 3 finishes machining the current region, the whole mechanism (synchronous with the cutting tool 3) rotates to the next region to be machined, realizing step-by-step feeding.

[0026] When the cutting tool 3 finishes machining a region and steps to the next region, the sealing plate 4 stays above the region just finished cutting. The electric push rod 71 pushes the sealing plate 4 to move towards the workpiece, so that the rubber pad 10 adheres to the surface of the workpiece and forms a sealed cavity with the workpiece. The cleaning tank 5 injects cleaning liquid into the sealed cavity through the water pipe 6, while maintaining a positive pressure environment of 0.02-0.03 MPa in the cavity. The cleaning liquid sufficiently cleans the surface just finished cutting and the structural gap under the positive pressure driving, timely removing metal chips, machining oil stains and cutting impurities. After cleaning, the liquid supply pump stops supplying liquid, the elastic mechanism 9 automatically depressurizes, and the cleaning liquid is extracted reversely or discharged by gravity through the water pipe 6. The sealing plate 4 is separated from the workpiece, and the cleaning of the region is completed. The above cutting and cleaning are continuous and parallel operations. When the cutting tool 3 is cutting the current region, the sealing plate 4 is cleaning the previous region. After the cutting tool 3 finishes the current region, the sealing plate 4 has been cleaned and rotated to the current region, realizing continuous online operation of cutting and cleaning.

[0027] After the cutting and cleaning of all regions are completed, the hot air blower 11 is started, hot air is introduced into the inside of the sealing plate 4 through the air pipe 10, and the surface of the workpiece and the structural gap just cleaned are dried. During the drying process, the cavity maintains a low-pressure positive pressure (0.015-0.02 MPa), so that the hot air flows directionally and deeply into the fine gap, completely removing the residual cleaning liquid and avoiding corrosion or oxidation of the workpiece caused by liquid residue. After drying, the sealing plate 4 is reset, the clamp 2 is loosened, and the operator takes out the workpiece which has been machined and cleaned.

[0028] The clamp 2 includes an annular mounting seat fixed to the upper surface of the base 1, a plurality of clamping claws arranged inside the annular mounting seat, and a clamping cylinder driving the clamping claws to move radially; the plurality of clamping claws are equidistantly distributed along the circumference of the annular mounting seat, and the clamping cylinder drives the clamping claws to move synchronously centripetally through a connecting rod mechanism or a wedge-shaped sliding block, thereby radially clamping and fixing the magnetic resonance device support from the outer periphery; after the clamp 2 clamps the workpiece, the workpiece as a whole remains stationary, and only the sealing plate 4 rotates around the workpiece for cleaning operation.

[0029] The cutting tool 3 comprises a tool holder fixed on the main shaft of the machine tool, a tool head arranged at the front end of the tool holder, and a pull pin connecting the tool holder and the main shaft; the tool head is made of hard alloy material, and the shape of the cutting edge thereof matches the profile to be machined of the support; the cutting tool 3 is locked and fixed by the cooperation of the tool holder and the tapered hole of the main shaft of the machine tool, and the rotation of the main shaft drives the tool head to cut the workpiece; during the cutting process, the cutting tool 3 rotates synchronously with the sealing plate 4, so that the sealing plate 4 is always aligned with the area just finished cutting.

[0030] During the machining of the support of the magnetic resonance device, the support is clamped and fixed by the clamp 2, and the support is cut by the cutting tool 3. During the cutting process of the workpiece, a large amount of metal chips, machining oil stains and cutting impurities will inevitably remain on the surface, corners and joint gaps of the workpiece. If the impurities are not cleaned in time after cutting, the impurities will gradually dry, stick and solidify with the extension of the standing time, and it is difficult to completely remove them by conventional wiping and simple rinsing.

[0031] Therefore, the device starts the pushing mechanism 7 at the same time of cutting. The pushing mechanism 7 comprises an electric push rod 71 fixedly connected to the upper side of the rotating support ring 85, a second hole 72 opened on the side of the sealing plate 4 close to the electric push rod 71, and a pressing plate 73 nested on the inner side of the second hole 72 and fixedly connected with the output end of the electric push rod 71; the outer side surface of the pressing plate 73 is attached to the inner side surface of the sealing plate 4; the outer side surface of the output end of the electric push rod 71 is attached to the inner side surface of the second hole 72. The pushing mechanism 7 further comprises a sliding groove 74 arranged on the inner side of the output end of the electric push rod 71, a spring 75 fixedly connected to the output end of the electric push rod 71 and arranged on the inner side of the sliding groove 74, and a sliding block 76 fixedly connected to the sealing plate 4 and slidingly arranged in the sliding groove 74; the central axis of the sliding groove 74 is parallel to the central axis of the electric push rod 71.

[0032] The spring 75 and the sliding block 76 constitute an elastic transmission assembly, and the functions thereof include: (1) transmission and buffering - the output end of the electric push rod 71 transmits the pushing force to the sealing plate 4 through the spring 75 and the sliding block 76, and the spring 75 can absorb the vibration and cutting impact force generated during the machining of the workpiece, so as to avoid the impact damage between the sealing plate 4 and the workpiece caused by rigid transmission; (2) self-adaptive pressure adjustment - when the sealing plate 4 contacts the workpiece, the electric push rod 71 continues to extend, and the spring 75 is compressed, and the pressure is transmitted to the sealing plate 4 through the spring force, so that the contact pressure between the sealing plate 4 and the workpiece increases linearly with the compression amount of the spring, and the sealing pressure is accurately controlled.

[0033] To prevent the vibration during processing from causing the sealing plate 4 to separate from the workpiece, the spring 75 maintains a certain pre-compression amount (about 1-2 mm), so that the sealing plate 4 is always continuously pushed by the spring force. At the same time, the pressing plate 73 is attached to the inner side of the sealing plate 4, and the outer side of the output end of the electric push rod 71 is attached to the inner side of the second hole 72, forming a double-guiding constraint to ensure that the sealing plate 4 still maintains a stable attached state under a vibrating environment and will not be separated from the workpiece due to vibration. In addition, the rubber pad 10 fixedly connected to the side of the sealing plate 4 close to the clamp 2 deforms elastically when under pressure, further absorbing the vibration energy and enhancing the stability of the sealing.

[0034] The electric push rod 71 pushes its output end to move outward of the workpiece, and the output end drives the sealing plate 4 to move to the side of the workpiece through the spring 75 and the sliding block 76, so that the rubber pad 10 fixedly connected to the side of the sealing plate 4 close to the clamp 2 is attached to the outer side of the workpiece. The rubber pad 10 is made of wear-resistant and oil-resistant rubber material and plays a sealing and buffering role, blocks the gap between the cavities, effectively prevents internal pressure leakage, and ensures long-term stability of the gas pressure in the cavities.

[0035] After the sealing plate 4 contacts the workpiece, it cannot continue to advance, but the output end of the electric push rod 71 continues to stretch the spring 75 and applies pressure to the sealing plate 4 through the pressing plate 73. The pressing plate 73 is the core pressure-bearing force-transmitting component in the cavity and cooperates with the sealing plate 4 and the rubber pad 10 to form an independent sealed space. As the electric push rod 71 continues to press, the gas pressure in the sealed space increases, forming a positive pressure environment of 0.02-0.03 MPa. This pressure belongs to the low-pressure safety interval and will not cause extrusion damage to the workpiece body, and can stably achieve the multiple process effects of liquid preservation, seepage, and micro-expanding gap.

[0036] At the same time, the rotating mechanism 8 is started. The rotating mechanism 8 includes a rotating motor 81 fixedly connected to the lower surface of the base 1, a first gear 82 fixedly connected to the output end of the rotating motor 81, a tooth ring 83 meshingly connected to the outer side of the first gear 82, a protective cover 84 arranged on the outer side of the first gear 82 and the tooth ring 83, and a rotating support ring 85 arranged above the protective cover 84; the rotating support ring 85 is fixedly connected with the tooth ring 83.

[0037] The rotating motor 81 drives the first gear 82 to rotate, the first gear 82 drives the tooth ring 83 to rotate, and the tooth ring 83 drives the rotating support ring 85 to rotate, so that the electric push rod 71 and the sealing plate 4 fixedly connected above the rotating support ring 85 are synchronously rotated. Through the external control device, the sealing plate 4 and the cutting tool 3 are kept synchronous rotation, always aligning the area just completed cutting, so that the sealing plate 4 and the water pipe 6 always maintain within the set working distance range.

[0038] The cleaning operation of the device adopts an intermittent step-by-step cleaning mode, that is, after the cutting tool 3 completes cutting in a region, the sealing plate 4 stays in the region and performs cleaning, and after the cleaning is completed, the sealing plate 4 and the cutting tool 3 are synchronously rotated to the next region to complete the cleaning of the entire workpiece region by region. The specific process is as follows: When the sealing plate 4 and the workpiece form a sealed cavity, the cleaning liquid is introduced into the cavity through the water pipe 6, and the cavity maintains a positive pressure of 0.02-0.03 MPa. After the sealing plate 4 cleans the local region just completed by cutting, the cleaning liquid is discharged by the following method: After cleaning, the electric push rod 71 drives the sealing plate 4 to move outward, the sealing state is released, and the cleaning liquid in the cavity naturally flows out under the action of gravity (the workpiece is a ring structure, the sealing plate 4 is located on the side of the workpiece, and the cleaning liquid can flow downward along the surface of the workpiece and be collected by the collection disc below); Before the sealing plate 4 is released, the air compressor 11 blows compressed air into the cavity through the air pipe 10 to blow and discharge the residual cleaning liquid with low-pressure airflow; After the sealing plate 4 is released, a gap is formed between the sealing plate 4 and the workpiece, the cleaning liquid naturally discharges under the action of gravity, and the sealing plate 4 continues to blow air at low pressure to assist in discharging the liquid to prevent liquid residue. To ensure stable pressure, the supply flow of the cleaning liquid is matched with the pressure relief flow of the pressure relief valve (elastic mechanism 9) to maintain the pressure in the cavity in the working interval of 0.02-0.03 MPa. The supply pump uses a constant pressure variable pump, and when the pressure in the cavity reaches the set value, the supply flow automatically decreases to keep the pressure stable, and the pressure will not rise indefinitely due to continuous supply.

[0039] Start the cleaning box 5, and the cleaning liquid enters the inside of the sealing plate 4 through the water pipe 6 to perform online cleaning on the region just completed by cutting. The sealing plate 4 is used to synchronously rotate with the cutting tool 3 to perform online cleaning on the region just completed by cutting, thereby preventing various impurities on the surface of the workpiece from drying, adhering and solidifying as the standing time increases, avoiding the solidification of impurities in the surface layer and the gap of the workpiece, completely avoiding the tedious process of subsequent manual deep cleaning, and effectively improving the overall production efficiency.

[0040] During the cleaning process, the sealed space surrounded by the sealing plate 4 and the workpiece is stably maintained at a rated positive pressure of 0.02-0.03 MPa. Under normal atmospheric pressure, the cleaning liquid will quickly drip and lose under the action of gravity, and the single contact time is less than 1 second. The positive pressure in the sealed cavity forms a pressure constraint on the surface layer of the liquid, offsetting part of the gravity effect, extending the effective contact time of the cleaning liquid with the surface of the workpiece, extending the reaction and infiltration time of the cleaning liquid with oil stains and metal debris, and accelerating the softening of oil stains and the falling of debris.

[0041] At the same time, there are a large number of structural gaps in the machined surface of the workpiece. The positive pressure driving cleaning liquid penetrates along the gap channel inward, and the penetration depth can be improved compared to the normal pressure state. A uniform pressure of 0.02-0.03 MPa can moderately open the gap (deformation of 0.1-0.3 mm), which is a elastic micro-deformation, and the workpiece can automatically recover to its original state after unloading, without any permanent deformation, so that the stubborn impurities hidden inside lose their attachment and are more easily flushed out by the cleaning liquid.

[0042] The partial closed cavity formed by the sealing plate 4 uniformly applies pressure to the corresponding area of the workpiece, so that the overall stress of the workpiece is balanced, avoiding deformation, material deviation or gap opening on one side caused by uneven local stress, while assisting in cleaning and maintaining the stability of the workpiece shape. According to actual measurement, the annular support workpiece will not have deformation problems such as deviation, distortion, and edge lifting under the pressure range, and the machining stability is extremely strong.

[0043] During the continuous feeding of the cleaning liquid, the pressure inside the sealing plate 4 will continue to rise. Combined with the material and structural strength test of the magnetic resonance support workpiece, when the pressure in the cavity exceeds 0.05 MPa, continuous pressure will cause plastic deformation and surface indentation of the workpiece, resulting in permanent damage. Therefore, the device is provided with an elastic mechanism 9.

[0044] The elastic mechanism 9 includes a sleeve 91 fixedly connected to the outside of the sealing plate 4, a support plate 92 fixedly connected to the inside of the sleeve 91, an air vent hole 93 communicating the sleeve 91 and the sealing plate 4, a spring 94 fixedly connected to the side of the support plate 92 close to the sealing plate 4, and a baffle 95 fixedly connected to the end of the spring 94 close to the sealing plate 4; the inside of the air vent hole 93 is provided with a hole 96; the baffle 95 is spherical, and its diameter is greater than the width of the hole 96. The opening pressure of the baffle 95 of the device is accurately set to 0.04 MPa, leaving sufficient safety redundancy.

[0045] The air vent hole 93 of the elastic mechanism 9 is located inside the sealing plate 4 close to its outer wall, and the pressure plate 73 moves axially inside the sealing plate 4, with its maximum moving stroke located in the central region of the space inside the sealing plate 4, without covering or passing through the position of the air vent hole 93. Specifically, the air vent hole 93 is opened in the inside of the side wall of the sealing plate 4, with its orifice located at the inside of the sealing plate 4 close to the outer peripheral edge, while the moving range of the pressure plate 73 is limited near the central axis inside the sealing plate 4, and the two do not overlap in spatial position. Therefore, the normal movement of the pressure plate 73 under the drive of the electric push rod 71 will not block the air vent hole 93, and the pressure relief function of the elastic mechanism 9 is always effective.

[0046] When the pressure inside the sealing plate 4 reaches the set threshold of 0.04 MPa, the high-pressure medium pushes the spherical baffle 95 outward through the air vent hole 93 located inside the side wall of the sealing plate 4, compresses the spring 94, and the baffle 95 leaves the hole 96, achieving automatic pressure relief.

[0047] When the pressure inside the sealing plate 4 reaches the set threshold value 0.04 MPa, the high-pressure medium pushes the spherical baffle 95 to move outward, compresses the spring 94, the baffle 95 leaves the hole 96, and the cavity automatically releases pressure through the vent hole 93, and the pressure in the cavity falls back to the safety interval. When the pressure falls below the threshold value, the spring 94 pushes the baffle 95 to reset the hole 96. The elastic mechanism 9 is used to automatically release pressure when the pressure in the cavity exceeds the threshold value, to avoid damage to the workpiece caused by excessive pressure inside the sealing plate 4.

[0048] After cleaning, start the hot air blower 11, and the hot air blower 11 dries the inside of the sealing plate 4 through the air pipe 10. During the drying stage, the cavity is again constructed to have a low pressure of 0.015-0.02 MPa. The low pressure can force the hot air to flow in a certain direction and deeply into the fine gaps of the workpiece, quickly removing the residual cleaning liquid on the surface of the workpiece and in the gaps, avoiding long-term corrosion of the workpiece surface and precise gaps caused by the residual cleaning liquid, reducing the corrosion of the workpiece caused by the long-term residence of the cleaning liquid, greatly improving the drying efficiency, and completely removing the residual moisture in the deep gaps. Water stains and oxidation defects are eliminated. As the cleaning liquid is discharged, the excess pressure and gas push the spherical baffle 95 outward, compress the spring 94, and the baffle 95 leaves the hole 96, achieving automatic pressure relief.

[0049] Electrochemical corrosion and material performance degradation caused by residual liquid. Magnetic resonance equipment supports are usually made of non-magnetic stainless steel, titanium alloy and other materials sensitive to corrosive environments. If the residual cleaning liquid remains on the surface of the workpiece and in the deep cavity structure for a long time, especially in gaps, grooves and other places where liquid is not easy to flow naturally, active ions (such as chlorine and sulfur elements in cutting fluid) in the liquid film can form a local micro-battery on the metal surface, causing pitting or intergranular corrosion. Even if the degree of corrosion is not easily detected macroscopically, the microscopic material damage can become a stress corrosion crack source during the later service process. Under the alternating load and environmental temperature fluctuations generated by the long-term operation of the magnetic resonance equipment, the crack gradually expands, and eventually may cause unexpected failure of the support during the critical service period, directly threatening the safety of the entire machine.

[0050] After the cleaning process is completed, the sealing plate 4 is temporarily not separated from the workpiece, and the hot air blower 11 immediately sends hot air into the sealed cavity surrounded by the sealing plate 4 and the workpiece through the air pipe 10, while the pushing mechanism 7 maintains the state of the sealing plate 4, so that the cavity maintains a low pressure of 0.015-0.02 MPa.

[0051] Since the magnetic resonance device support has a certain wall thickness and large heat capacity, under the condition of conventional open-loop hot air blowing, heat is difficult to quickly transfer to the whole workpiece, which easily leads to inconsistent temperature rising rate of each area in the annular circumference, and the residual cleaning liquid hidden in the deep hole, groove and gap between the mating surfaces forms a local low temperature area due to isolation from the outside hot air, and long-time retention easily causes surface oxidation or corrosion. In the embodiment, the low-pressure positive pressure driving hot air in the cavity is forced to circulate along the circumference of the annular workpiece, forming a continuous and uniform convective heat transfer, effectively breaking the local thermal boundary layer formed on the surface of the thick-walled metal piece due to large heat capacity, so that heat quickly conducts along the radial and circumferential directions of the workpiece, greatly improving the temperature uniformity and temperature rising rate of the entire annular circumferential surface; under the action of this uniform heat field, the residual cleaning liquid in the deep hole, groove and gap between the mating surfaces rapidly vaporizes after being heated, and is discharged from the pressure relief channel of the elastic mechanism 9 or the gap after the sealing plate 4 is unsealed.

[0052] At the same time, since the workpiece has a certain wall thickness and sufficient rigidity, the low-pressure positive pressure does not cause any extrusion deformation or adverse effects on the workpiece appearance, and the entire process is safe and reliable.

[0053] The above-mentioned continuous positive pressure cleaning and positive pressure drying process not only realizes seamless connection of cleaning and drying by using the same sealed cavity and the same positive pressure gas source, avoids secondary pollution and heat loss during workpiece transfer, but also solves the problem of corrosion of residual cleaning liquid in the deep cavity structure of thick-walled annular parts by using the combination of forced convection uniform heating + positive pressure driving vaporization discharge, especially avoids pitting and intergranular corrosion caused by failure to dry immediately, which affects the service reliability of the support and the safety of the whole machine, and improves the surface quality and long-term service reliability of the magnetic resonance device support.

[0054] After the whole process is completed, the electric push rod 71 is reset, the sealing plate 4 is separated from the workpiece, and the next area cutting and cleaning operation is waited.

[0055] Through the above process, the sealing plate and the cutting tool are synchronously rotated for online cleaning, the positive pressure prolongs the contact time of the cleaning liquid and drives penetration, the elastic mechanism automatically releases pressure to protect the workpiece, and the hot air positive pressure directionally dries and removes water. The device effectively avoids impurity dryness and hardening, reduces the difficulty of subsequent cleaning, and improves the overall production efficiency, workpiece machining precision and yield.

[0056] The terms "comprise", "comprising", "include", "including", "contain", "containing", "have", "having", "maintain", "maintaining", "carry", "carrying", "hold", "holding", "provide", "providing", "carry", "carrying", "hold", "holding", "provide", "providing" or any other variation thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise, include, contain, have, maintain, carry, hold, provide or are otherwise including a series of elements do not include only those elements but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0057] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since modifications can be made by those skilled in the art, without departing from the spirit and scope of the application, which are defined by the appended claims and their equivalents.

Claims

1. A machining apparatus of a magnetic resonance device support, comprising a base (1), a clamp (2) arranged above the base (1), and a cutting tool (3) arranged above the clamp (2), characterized in that The outer side of the clamp (2) is provided with a sealing plate (4), the outer side of the sealing plate (4) is provided with a cleaning box (5), the sealing plate (4) and the cleaning box (5) are communicated through a water pipe (6), the outer side of the sealing plate (4) is provided with a pushing mechanism (7), the lower side of the pushing mechanism (7) is provided with a rotating mechanism (8), and the inside of the sealing plate (4) is provided with an elastic mechanism (9); The sealing plate (4) is used for synchronous rotation with the cutting tool (3), and the online cleaning of the area just finished cutting is performed; The pushing mechanism (7) is used for driving the sealing plate (4) to adhere to the workpiece and maintaining the positive pressure in the sealing cavity; The rotating mechanism (8) is used for driving the sealing plate (4) to rotate around the workpiece; The elastic mechanism (9) is used for automatically relieving pressure when the cavity pressure exceeds the set threshold.

2. A processing apparatus of a magnetic resonance apparatus support according to claim 1, characterized in that, The side close to the clamp (2) of the sealing plate (4) is fixedly connected with a rubber pad (10), which is used for forming a sealing buffer when adhering to the workpiece.

3. A processing apparatus of a magnetic resonance apparatus support according to claim 1, characterized by, The elastic mechanism (9) comprises a sleeve (91) fixedly connected to the outer side of the sealing plate (4), a support plate (92) fixedly connected to the inner side of the sleeve (91), a ventilation hole (93) communicating the sleeve (91) and the sealing plate (4), a spring (94) fixedly connected to the side close to the sealing plate (4) of the support plate (92), and a baffle (95) fixedly connected to the end close to the sealing plate (4) of the spring (94). The inside of the ventilation hole (93) is provided with a hole (96); The baffle (95) is spherical, and the diameter thereof is greater than the width of the hole (96), which is used for being pushed away to relieve pressure when the cavity pressure exceeds the threshold.

4. A magnetic resonance apparatus support processing apparatus according to claim 1, characterized in that, The rotating mechanism (8) comprises a rotating motor (81) fixedly connected to the lower surface of the base (1), a first gear (82) fixedly connected to the output end of the rotating motor (81), a gear ring (83) meshingly connected to the outer side of the first gear (82), a protective cover (84) arranged on the outer sides of the first gear (82) and the gear ring (83), and a rotating support ring (85) arranged above the protective cover (84); The rotating support ring (85) is fixedly connected with the gear ring (83), and is used for driving the pushing mechanism (7) and the sealing plate (4) to synchronously rotate.

5. A magnetic resonance apparatus support processing apparatus according to claim 4, characterized in that, The pushing mechanism (7) comprises an electric push rod (71) fixedly connected above the rotating support ring (85), a second hole (72) formed in the side close to the electric push rod (71) of the sealing plate (4), and a pressing plate (73) nested in the inner side of the second hole (72) and fixedly connected with the output end of the electric push rod (71). The outer side surface of the pressing plate (73) is attached to the inner side surface of the sealing plate (4); The outer side surface of the output end of the electric push rod (71) is attached to the inner side surface of the second hole (72).

6. A magnetic resonance apparatus support processing apparatus according to claim 5, characterized in that, The pushing mechanism (7) further comprises a sliding groove (74) arranged in the inner side of the output end of the electric push rod (71), a spring (75) fixedly connected to the output end of the electric push rod (71) and arranged in the inner side of the sliding groove (74), and a sliding block (76) fixedly connected to the sealing plate (4) and slidingly arranged in the sliding groove (74). The center axis of the sliding groove (74) is parallel to the center axis of the electric push rod (71), for transmitting pressure to the sealing plate (4) through the spring (75) and the sliding block (76) when the electric push rod (71) is pushed, and continuing to compress the spring (75) to establish positive pressure in the sealing cavity after the sealing plate (4) contacts the workpiece.

7. A magnetic resonance apparatus support processing apparatus according to claim 1, wherein, The upper end of the sealing plate (4) is communicated with an air pipe (10), and the other end of the air pipe (10) is communicated with a hot air machine (11), for drying the inside of the sealing plate (4) after cleaning.

8. A magnetic resonance apparatus support processing apparatus according to claim 7, characterized in that, The hot air machine (11) is used for cooperating with the low-pressure positive pressure in the sealing cavity in the drying stage, pushing the directional flow of hot air and deepening the fine gap.

9. A magnetic resonance apparatus support processing apparatus according to claim 1, wherein, The pushing mechanism (7) is used for continuing to push after the sealing plate (4) is attached to the workpiece, so that a predetermined pressure positive pressure cavity is formed between the sealing plate (4) and the workpiece, so as to prolong the contact time of the cleaning liquid with the workpiece and drive the cleaning liquid to penetrate into the structural gap.

10. A magnetic resonance apparatus support processing apparatus according to claim 3, characterized in that, The pressure setting of the baffle (95) of the elastic mechanism (9) for opening pressure relief is a safety threshold, for automatically relieving pressure when the pressure in the cavity exceeds the threshold, so as to avoid damage to the workpiece.

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