A polishing table for aluminum alloy casting machining

Abstract

The application discloses a grinding table for aluminum alloy casting machining, which is applied to the technical field of grinding tables and comprises a table top, an annular track is fixedly connected to the top of the table top, the annular track is hollow, a rough machining clamping assembly and a finish machining clamping assembly are slidably connected to the annular track, the rough machining clamping assembly and the finish machining clamping assembly are symmetrical to each other and are identical assemblies, a lifting mechanism penetrates through the middle of the annular track, a rough machining polishing assembly and a finish machining polishing assembly are slidably connected to the two sides of the lifting mechanism, the rough machining polishing assembly and the finish machining polishing assembly are symmetrical to each other and are identical assemblies, the rough machining polishing assembly is above the rough machining clamping assembly, and the finish machining polishing assembly is above the finish machining clamping assembly. The device solves the technical problem that a grinding wheel cannot be recycled after producing micro defects, and the problem that manual movement is needed and human resources are consumed when a workpiece is converted from rough polishing to finish polishing.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polishing tables, and particularly relates to a polishing table for aluminum alloy casting machining. BACKGROUND

[0002] Aluminum alloy castings are metal parts cast from non-metallic materials such as aluminum, copper, zinc and the like. Aluminum alloy castings have high mechanical properties and corrosion resistance, and are the preferred material for manufacturing high-precision parts. Based on color, toughness and quality, aluminum alloy castings can be applied to aviation, ships, machinery, medical treatment, military and many other fields.

[0003] The existing aluminum alloy casting materials can be divided into three types: plastic aluminum alloy castings, weldable aluminum alloy castings and stampable aluminum alloy castings. After the aluminum alloy casting machining is completed, the staff needs to polish it. The polishing is usually divided into rough polishing and fine polishing. The polishing wheels of the two cannot be recycled after producing micro defects. When rough polishing is converted to fine polishing, the aluminum alloy casting needs to be manually moved to the fine polishing platform, which consumes a certain amount of manpower and energy. This phenomenon has become a problem that personnel in the field urgently need to solve. SUMMARY

[0004] The purpose of the present application is to provide a polishing table for aluminum alloy casting machining to solve the problems in the background art.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a polishing table for aluminum alloy casting machining, comprising a table top, the top of the table top is fixedly connected with a ring-shaped track, the inside of the ring-shaped track is hollow, the ring-shaped track is slidably connected with a rough machining clamping assembly and a fine machining clamping assembly, the rough machining clamping assembly and the fine machining clamping assembly are mutually symmetrical and are the same assembly, a lifting mechanism penetrates through the middle of the ring-shaped track, the lifting mechanism is slidably connected with a rough machining polishing assembly and a fine machining polishing assembly on both sides, the rough machining polishing assembly and the fine machining polishing assembly are mutually symmetrical and are the same assembly, the rough machining polishing assembly is above the rough machining clamping assembly, and the fine machining polishing assembly is above the fine machining clamping assembly,

[0006] The rough machining polishing assembly comprises a rough grinding wheel, a first temperature sensor and a first camera, the first temperature sensor is fixedly connected to the bottom of the protective cover in the rough machining polishing assembly and located in front of the rough grinding wheel, and the first camera is above the rough grinding wheel, the fine machining polishing assembly comprises a fine grinding wheel, a second temperature sensor and a second camera, the second temperature sensor is in front of the fine grinding wheel, and the second camera is fixedly connected to the bottom of the protective cover in the fine machining polishing assembly and located above the fine grinding wheel,

[0007] The bottom of the lifting mechanism is provided with a cooling liquid tank, the cooling liquid tank is communicated with a cooling pipeline, the cooling pipeline is a hose and is provided with a water pump and a switch,

[0008] A drain groove is formed in the table top, a filter screen is arranged on the drain groove, the drain groove is connected with a cooling liquid pipeline, the pipeline is arranged in the table top and the lifting mechanism, the table top is communicated with a plurality of pressure valves, one end of the pressure valves is communicated with the pipeline on the table top, the other end is communicated with the annular track, the pipeline is arranged around the annular track,

[0009] The specifications of the coarse sand wheel and the fine sand wheel are 46k.

[0010] The top of the annular track is slidably connected with a clamping base, the bottom of the clamping base is fixedly connected with four groups of connecting shafts, the connecting shafts are distributed on the two sides of the annular track in pairs, the bottom bearings of the connecting shafts are connected with rollers, recesses are formed in the inner side and the outer side of the annular track, the rollers roll in the recesses, the top of a corner of the clamping base is fixedly connected with a motor, the output end of the motor is fixedly connected with a driving shaft, the driving shaft penetrates through the clamping base and is connected with a bearing, the bottom of the driving shaft is fixedly connected with a gear, the gear is located in the recess on the inner side of the annular track, a gear rack is fixedly connected on the recess on the inner side of the annular track, the gear rack is matched with the gear.

[0011] The clamping base is "convex", the convex part of the clamping base is fixedly connected with a telescopic rod, the telescopic rod is controlled in length by a gas cylinder, a U-shaped groove is formed in the top of the clamping base, a guide strip is slidably connected in the U-shaped groove, a toothed rail electric sliding device is arranged in the U-shaped groove, the toothed rail electric sliding device is engaged with the bottom of the guide strip, the driving of the toothed rail electric sliding device is an electric motor.

[0012] The two ends of the guide strip are fixedly connected with limit blocks, the bottom of the limit blocks is fixedly connected with universal wheels, the top of the guide strip is fixedly connected with a connecting seat, the top of the connecting seat is fixedly connected with a clamping platform, a fixing seat is threadedly connected on the clamping platform, a bench vice is fixedly connected on the fixing seat, a threaded rod is arranged on one side of the bench vice, a handle penetrates through the top end of the threaded rod.

[0013] The lifting mechanism is a hydraulic structure, a sliding groove is formed in the lifting mechanism, a sliding seat is slidably connected in the sliding groove, the sliding seat is fixedly connected with the hydraulic structure in the lifting mechanism, one side of the sliding seat is communicated with the cooling pipeline, the water outlet end of the cooling pipeline is close to the coarse sand wheel, a main shaft box is fixedly connected in front of the sliding seat, the output end of the main shaft box is fixedly connected with a main shaft, the main shaft is connected with a protective cover and penetrates through, the coarse sand wheel is located in the protective cover and is fixedly connected with the main shaft.

[0014] The present application further discloses that two groups of positioning holes are arranged on the table top, the positioning holes are located outside the annular track, and the positioning holes are matched with the telescopic rods in size.

[0015] The present application further discloses that six groups of supporting columns are fixedly connected to the bottom of the table top, the bottom of the supporting column is fixedly connected with a pad plate, the bottom of the pad plate is fixedly connected with a base, and the lifting mechanism is fixedly connected with the base.

[0016] The present application further discloses that the lifting mechanism, the clamping base, the telescopic rod, the motor, the main shaft box, the cooling pipeline, the first temperature sensor, the second temperature sensor, the first camera, the second camera and the pressure valve are electrically connected.

[0017] Compared with the prior art, the present application has the beneficial effects that: the annular track is arranged, the workpiece after rough machining does not need to be taken down from the clamping device and then transferred to the polishing platform for polishing, time and manpower are saved, rough polishing and fine polishing are separated and independently operated, a plurality of polishing components can be arranged on the annular track to improve the polishing efficiency, the first camera and the second camera are arranged to take photos of the surface of the workpiece during machining and analyze the photos, after the workpiece with defects is found, the first temperature sensor and the second temperature sensor are combined to judge the state of the grinding wheel, the cause affecting the machining is found out, the fine grinding wheel replaced during fine polishing is tested and then used for rough machining again, the production cost is saved, and the technical problem that the grinding wheel cannot be recycled after producing defects is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:

[0019] Figure 1 is a schematic view of the overall structure of the present application;

[0020] Figure 2 is a schematic view of the outer side of the annular track of the present application;

[0021] Figure 3 is a schematic view of the inner side of the annular track of the present application; Figure 2 is an enlarged schematic view of region A in the present application;

[0022] Figure 4 is a schematic view of the inner side of the annular track of the present application;

[0023] Figure 5 is an enlarged schematic view of region B in the present application; Figure 4

[0024] Figure 6 ​is a schematic diagram of the lifting mechanism of the present application;

[0025] Figure 7 is a schematic diagram of the pipeline of the present application;

[0026] In the figure: 1, table top; 2, support column; 3, base plate; 4, base; 5, rough machining clamping assembly; 6, finishing clamping assembly; 7, rough machining polishing assembly; 8, finishing polishing assembly; 9, lifting mechanism; 10, annular track; 11, clamping base; 12, connecting shaft; 13, roller; 14, telescopic rod; 15, guide bar; 16, connecting seat; 17, clamping platform; 18, fixing seat; 19, bench vice; 20, threaded rod; 21, handle; 22, limit block; 23, universal wheel; 24, rack; 25, motor; 26, drive shaft; 27, gear; 28, sliding groove; 29, sliding seat; 30, spindle box; 31, cooling pipeline; 32, protective cover; 33, main shaft; 34, coarse grinding wheel; 35, first temperature sensor; 36, positioning hole; 37, fine grinding wheel; 38, second temperature sensor; 39, first camera; 40, second camera; 41, lower water tank; 42, pressure valve. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be further described in detail below in combination with preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-3 The present application provides a technical solution: a polishing table for aluminum alloy casting machining, comprising a table top 1, the top of the table top 1 is fixedly connected with an annular track 10, the inside of the annular track 10 is hollow, the annular track 10 is slidingly connected with a rough machining clamping assembly 5 and a finishing clamping assembly 6, the rough machining clamping assembly 5 and the finishing clamping assembly 6 are mutually symmetrical and are the same assembly, a lifting mechanism 9 penetrates through the middle of the annular track 10, the rough machining polishing assembly 7 and the finishing polishing assembly 8 are slidingly connected on both sides of the lifting mechanism 9, the rough machining polishing assembly 7 and the finishing polishing assembly 8 are mutually symmetrical and are the same assembly, the rough machining polishing assembly 7 is above the rough machining clamping assembly 5, the finishing polishing assembly 8 is above the finishing clamping assembly 6,

[0029] The rough grinding assembly 7 comprises a rough grinding wheel 34, a first temperature sensor 35, and a first camera 39. The first temperature sensor 35 is fixedly connected to the bottom of the protective cover 32 in the rough grinding assembly 7 and located in front of the rough grinding wheel 34. The first camera 39 is above the rough grinding wheel 34. The fine grinding assembly 8 comprises a fine grinding wheel 37, a second temperature sensor 38, and a second camera 40. The second temperature sensor 38 is in front of the fine grinding wheel 37. The second camera 40 is fixedly connected to the bottom of the protective cover 32 in the fine grinding assembly 8 and located above the fine grinding wheel 37. The first temperature sensor 35 and the second temperature sensor 38 record the temperatures of the rough grinding wheel 34 and the fine grinding wheel 37 through infrared temperature measurement,

[0030] The bottom of the lifting mechanism 9 is provided with a cooling liquid tank. The cooling liquid tank is connected with a cooling pipeline 31. The cooling pipeline 31 is a soft pipe and is provided with a water pump and a switch.

[0031] A drain groove 41 is formed in the table top 1. A filter screen is arranged on the drain groove 41 to filter iron filings. The drain groove 41 is connected with a cooling liquid pipeline. The pipeline is arranged inside the table top 1 and the lifting mechanism 9. The table top 1 is connected with a plurality of pressure valves 42. One end of each pressure valve 42 is connected with the pipeline on the table top 1. The other end of each pressure valve 42 is connected with the annular track 10. The pipeline is arranged around the annular track 10 to help cool the bottom of the annular track 10.

[0032] The specifications of the rough grinding wheel 34 and the fine grinding wheel 37 are 46k.

[0033] A clamping base 11 is slidably connected above the annular track 10. Four groups of connecting shafts 12 are fixedly connected to the bottom of the clamping base 11. The connecting shafts 12 are distributed on both sides of the annular track 10 in pairs. Rollers 13 are bearing-connected to the bottom of the connecting shafts 12. Grooves are formed in the inner side and the outer side of the annular track 10. The rollers 13 roll in the grooves. A motor 25 is fixedly connected to the top of one corner of the clamping base 11. A drive shaft 26 is fixedly connected to the output end of the motor 25. The drive shaft 26 penetrates through the clamping base 11 and is bearing-connected thereto. A gear 27 is fixedly connected to the bottom of the drive shaft 26. The gear 27 is located in the groove in the inner side of the annular track 10. A set of racks 24 is fixedly connected to the groove in the inner side of the annular track 10. The racks 24 are matched with the gear 27.

[0034] The clamping base 11 is "convex". Telescopic rods 14 are fixedly connected to the convex parts of the clamping base 11. The lengths of the telescopic rods 14 are controlled by air cylinders. A U-shaped groove is formed in the top of the clamping base 11. A guide strip 15 is slidably connected in the U-shaped groove. A rack electric sliding device is built in the U-shaped groove. The rack electric sliding device is engaged with the bottom of the guide strip 15. The drive of the rack electric sliding device is an electric motor.

[0035] The guide strip 15 is fixedly connected with a limiting block 22 at both ends, the bottom of the limiting block 22 is fixedly connected with a universal wheel 23, the guide strip 15 is fixedly connected with a connecting seat 16 above, the connecting seat 16 is fixedly connected with a clamping platform 17 at the top, the clamping platform 17 is threadedly connected with a fixing seat 18, the fixing seat 18 is fixedly connected with a bench vice 19 above, the bench vice 19 is provided with a threaded rod 20 at one side, the threaded rod 20 penetrates through a handle 21 at the top end;

[0036] The lifting mechanism 9 is a hydraulic structure, the lifting mechanism 9 is provided with a sliding groove 28, the sliding groove 28 is slidably connected with a sliding seat 29, the sliding seat 29 is fixedly connected with the hydraulic structure in the lifting mechanism 9, the sliding seat 29 is communicated with a cooling pipeline 31 at one side, the water outlet end of the cooling pipeline 31 is close to the coarse sand wheel 34, the sliding seat 29 is fixedly connected with a main shaft box 30 in front, the output end of the main shaft box 30 is fixedly connected with a main shaft 33, the main shaft 33 is bearingly connected with a protective cover 32 and penetrates through, the coarse sand wheel 34 is located in the protective cover 32 and is fixedly connected with the main shaft 33;

[0037] The table top 1 is provided with two groups of positioning holes 36, the positioning holes 36 are located outside the annular track 10, the size of the positioning hole 36 is matched with the telescopic rod 14, the telescopic rod 14 can be embedded into the positioning hole 36 after being elongated;

[0038] The table top 1 is fixedly connected with six groups of supporting columns 2 at the bottom, the bottom of the supporting column 2 is fixedly connected with a pad 3, the bottom of the pad 3 is fixedly connected with a base 4, the lifting mechanism 9 is fixedly connected with the base 4;

[0039] The lifting mechanism 9, the clamping base 11, the telescopic rod 14, the motor 25, the main shaft box 30, the cooling pipeline 31, the first temperature sensor 35, the second temperature sensor 38, the first camera 39, the second camera 40 and the pressure valve 42 are electrically connected.

[0040] Embodiment one: the specific operation method of the polishing table

[0041] Specifically, the worker selects the bench vice 19 corresponding to the required machined workpiece, fixes the fixing seat 18 on the clamping platform 17 through the bolt, puts the workpiece into the opening of the bench vice 19, twists the handle 21, the threaded rod 20 drives the movable jaw of the bench vice 19 to move close to the fixed jaw, when the handle 21 cannot be twisted, it indicates that the workpiece has been clamped, the rack electric sliding device on the clamping base 11 is started, the clamping base 11 has a motor inside, the motor drives the rack electric sliding device, the clamping base 11 meshes with the transmission guide strip 15 to slide on the clamping base 11, through the forward and reverse rotation of the motor, the left and right sliding of the guide strip 15 is realized, thereby driving the movement of the bench vice 19, the rough machining workpiece also moves left and right,

[0042] The rough grinding assembly 7 is started, the spindle motor rotates to drive the driving shaft 26 to rotate, so that the rough grinding wheel 34 starts to rotate, and the rough grinding assembly 7 is slowly lowered by controlling the lifting mechanism 9 until the rough grinding wheel 34 contacts the rough workpiece, and the tool is completed when the contact sound or spark is heard. Turn on the switch on the cooling pipeline 31, the cooling liquid is pumped out from the cooling water tank, and the outlet of the cooling pipeline 31 is adjusted to align the grinding wheel and the workpiece for cooling. The rough grinding assembly 7 is lowered according to the grinding size, and the rough workpiece moves left and right to contact the rough grinding wheel 34 for grinding,

[0043] When the surface of the rough workpiece is polished flat, the rough grinding assembly 7 is lifted by controlling the lifting mechanism 9, the rack electric sliding device on the clamping base 11 is closed, the telescopic rod 14 is pulled out of the positioning hole 36 below the rough grinding assembly 7, the motor 25 is started, the motor 25 drives the gear 27 to rotate, the gear 27 meshes with the rack 24 to drive the rough clamping assembly 5 to move below the fine grinding assembly 8, the telescopic rod 14 is inserted into the positioning hole 36 below the fine grinding assembly 8, the fine grinding assembly 8 is started, the fine grinding wheel 37 rotates, and the rough grinding assembly 7 is used to tool the workpiece that needs to be finely machined in the same way. After tooling is completed, grinding is carried out according to the processing requirements,

[0044] At this moment, the fine clamping assembly 6 moves below the rough grinding assembly 7, the telescopic rod 14 on the fine clamping assembly 6 is inserted into the positioning hole 36 below the rough grinding assembly 7, and the workpiece that needs to be rough machined is installed on the vice 19 of the fine clamping assembly 6. After installation is completed, the rack electric sliding device of the clamping base 11 on the fine clamping assembly 6 is started to tool the rough grinding assembly 7 with the component that needs to be rough machined. After tooling is completed, grinding can be started,

[0045] At this moment, the polishing table can simultaneously carry out rough machining and fine machining, and grind two different components. When the fine machining of the workpiece on the rough clamping assembly 5 is completed, the fine grinding assembly 8 is lifted, the vice 19 on the rough clamping assembly 5 is loosened, the fine machined workpiece is taken out, and the workpiece that needs to be rough machined is placed. After the rough machining of the workpiece on the fine clamping assembly 6 is completed, the workpiece on the rough clamping assembly 5 is moved below the rough grinding assembly 7 for polishing,

[0046] The device is provided with the annular track 10, and the workpiece that has completed rough machining does not need to be taken out from the clamping device and then transferred to the fine polishing table for polishing, which saves time and labor. Meanwhile, rough grinding and fine grinding are separated and independently operated. A plurality of polishing assemblies can also be arranged on the annular track 10 to improve the polishing efficiency.

[0047] In the second embodiment, the speed of the rough grinding wheel 34 is controlled below 1000 rpm during rough machining, and the speed of the fine grinding wheel 37 is controlled above 2000 rpm during fine machining. The higher the speed of the grinding wheel, the higher the grinding smoothness. However, if the speed of the grinding wheel is too high, the heat of the grinding wheel will increase, which will cause the grinding wheel to wear out and the surface quality of the workpiece to decrease. Therefore, the fine grinding wheel 37 is required to have a high quality, and the fine grinding wheel 37 that does not meet the fine machining standard can be used for rough machining according to the specific situation.

[0048] Specifically, the heat of the grinding wheel changes constantly during grinding. The first temperature sensor 35 on the rough grinding assembly 7 detects the temperature of the rough grinding wheel 34. In a normal situation, the maximum temperature of the rough grinding wheel 34 during grinding is set to be not more than a. The second temperature sensor 38 on the fine grinding assembly 8 detects the temperature of the fine grinding wheel 37. In a normal situation, the maximum temperature of the fine grinding wheel 37 during grinding is set to be not more than b.

[0049] Taking the fine grinding wheel 37 as an example, the second camera 40 takes a photo of the surface of the workpiece during grinding. The second camera 40 takes a photo of the surface of the workpiece and transmits the photo to the control end of the device for analysis to determine whether the surface precision of the workpiece is affected. At the same time, the second temperature sensor 38 detects the temperature of the fine grinding wheel 37. If the surface precision is not affected, the temperature of the fine grinding wheel 37 is set to be c. When c is greater than b, the cooling pipeline 31 increases the flow rate of the cooling liquid. If the temperature c decreases and is not more than b, it means that the processing is normal, and the reason for the high temperature of the fine grinding wheel 37 is that the fine grinding wheel 37 runs for a long time during processing, which can be solved by increasing the flow rate of the cooling liquid. If the flow rate of the cooling pipeline 31 is increased, and c is still greater than b, it means that the fine grinding wheel 37 is worn out and the volume is small, which has poor heat dissipation performance. The worker stops the fine grinding assembly 8, removes the fine grinding wheel 37, and replaces it with a new grinding wheel to process again.

[0050] After comparing the photos taken by the second camera 40, it is found that the surface precision of the workpiece has obvious flaw traces, and the temperature c is not more than b. It means that the workpiece is not loose during grinding, which causes deviation in the grinding route. The fine grinding assembly is stopped and then raised for regrinding after the workpiece is tightened. The second camera 40 continues to take photos during grinding and comparison. If there is no flaw, it means that the problem is solved. If the photos taken by the second camera 40 have flaws, it means that the fine grinding wheel 37 is damaged, which affects the workpiece and increases the temperature of the fine grinding wheel 37. The worker should immediately stop the fine grinding assembly 8, remove the fine grinding wheel 37, and detect the specific damage position of the fine grinding wheel 37, and replace a new grinding wheel on the fine grinding assembly 8.

[0051] The above steps are also applicable to the detection of the corresponding components during rough machining;

[0052] The fine grinding wheel 37 removed from the fine machining grinding assembly 8 is classified, if there is no deformation, crack, damage, notch, etc. of the grinding wheel piece, the fine grinding wheel 37 can be repaired and installed on the rough machining grinding assembly 7, and idled for five minutes, if the rotation is stable and there is no problem, it can be used for rough machining of the workpiece, otherwise it is scrapped;

[0053] After the workpiece is cooled by the cooling pipeline 31, the cooling liquid flows into the water tank 41, and then flows through the pipeline below the annular track 10, so that the cooling liquid used for cooling the workpiece can be used to cool the inside of the annular track 10 again, so as to prevent the annular track 10 from deforming due to high temperature and affecting the use, and then flows to the cooling liquid tank through the pipeline, and is mixed with the cooling liquid to be used again,

[0054] When the rough machining clamping assembly 5 and the fine machining clamping assembly 6 move on the annular track 10, due to the high temperature of the air in the workshop, the deformation of the annular track 10 caused by long-time operation of the equipment can cause the rough machining clamping assembly 5 and the fine machining clamping assembly 6 to be unable to move smoothly, and the workers can observe the rough machining clamping assembly 5 or the fine machining clamping assembly 6 through naked eyes when the rough machining clamping assembly 5 or the fine machining clamping assembly 6 is stuck at a certain area on the annular track 10, and the workers can open the pressurizing valve 42 closest to the stuck area at the control end to increase the flow of the cooling liquid in the area to cool the area, and after the rough machining clamping assembly 5 or the fine machining clamping assembly 6 passes through the area, the opened pressurizing valve 52 is closed, and the flow of the cooling liquid in the overheated area of the annular track 10 is increased point by point, so as to not only improve the cooling efficiency, but also save the water flow.

[0055] The device can take photos of the surface of the workpiece during machining through the first camera 39 and the second camera 40, and analyze the photos, find out the workpiece with defects, judge the state of the grinding wheel through the first temperature sensor 35 and the second temperature sensor 38, find out the cause affecting the machining, and use the fine grinding wheel 37 removed during fine machining for rough machining again after inspection, so as to save the production cost and solve the technical problem that the grinding wheel cannot be recycled after a slight defect is generated.

[0056] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0057] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A grinding table for machining of aluminium alloy castings, comprising a table surface (1), characterised in that: The top of the table (1) is fixedly connected with an annular track (10), the inside of the annular track (10) is hollow, the annular track (10) is slidably connected with a rough machining clamping assembly (5) and a finishing machining clamping assembly (6), the rough machining clamping assembly (5) and the finishing machining clamping assembly (6) are symmetrical to each other and are the same assembly, a lifting mechanism (9) penetrates through the middle of the annular track (10), the rough machining polishing assembly (7) and the finishing machining polishing assembly (8) are slidably connected on both sides of the lifting mechanism (9), the rough machining polishing assembly (7) and the finishing machining polishing assembly (8) are symmetrical to each other and are the same assembly, the rough machining polishing assembly (7) is above the rough machining clamping assembly (5), and the finishing machining polishing assembly (8) is above the finishing machining clamping assembly (6), The rough machining polishing assembly (7) comprises a rough grinding wheel (34), a first temperature sensor (35) and a first camera (39), the first temperature sensor (35) is fixedly connected to the bottom of the protective cover (32) in the rough machining polishing assembly (7) and located in front of the rough grinding wheel (34), and the first camera (39) is above the rough grinding wheel (34), the finishing machining polishing assembly (8) comprises a finishing grinding wheel (37), a second temperature sensor (38) and a second camera (40), the second temperature sensor (38) is in front of the finishing grinding wheel (37), and the second camera (40) is fixedly connected to the bottom of the protective cover (32) in the finishing machining polishing assembly (8) and located above the finishing grinding wheel (37), The bottom of the lifting mechanism (9) is provided with a cooling liquid tank, the cooling liquid tank is communicated with a cooling pipeline (31), and the cooling pipeline (31) is a hose provided with a water pump and a switch, A drain groove (41) is formed in the table (1), a filter screen is arranged on the drain groove (41), the drain groove (41) is connected with a cooling liquid pipeline, the pipeline is arranged in the table (1) and the lifting mechanism (9), the table (1) is communicated with a plurality of pressure valves (42), one end of the pressure valve (42) is communicated with the pipeline on the table (1), the other end is communicated with the annular track (10), and the pipeline is arranged around the annular track (10), The specifications of the rough grinding wheel (34) and the finishing grinding wheel (37) are 46k; The specific steps are as follows: when the grinding wheel is grinding, the first temperature sensor (35) on the rough machining polishing assembly (7) detects the temperature of the rough grinding wheel (34), and the highest temperature of the rough grinding wheel (34) during grinding is not more than a under normal circumstances, and the highest temperature of the finishing grinding wheel (37) during grinding is not more than b, During the grinding process, the second camera (40) takes a photo of the workpiece surface and judges whether the surface precision of the workpiece is affected, if the surface precision is not affected, the temperature of the finishing grinding wheel (37) is set as c, and when c is greater than b, the cooling pipeline (31) increases the flow of the cooling liquid, If the temperature c decreases and is not more than b, it indicates that the processing is normal, and the problem can be solved by increasing the flow of the cooling liquid. If the flow of the cooling pipeline (31) is increased, c is still greater than b, the staff will shut down the fine grinding wheel (37) polishing assembly (8), and then replace the new grinding wheel, and then process again; Through the second camera (40) to take the photos into the control terminal contrast, found that the surface precision of workpiece has obvious flaw trace, at the same time, the temperature of c does not exceed b, the fine polishing assembly is stopped, and then the workpiece is tightened and polished again. The second camera (40) continues to take pictures during polishing. If there is no flaw, it means that the problem is solved. When the second camera (40) takes pictures and finds flaws, the temperature of c exceeds b, the fine grinding wheel (37) is removed and detected, and a new grinding wheel is replaced on the fine polishing assembly (8); The above steps are also applicable to the detection of corresponding components during rough machining; After the workpiece is cooled by the cooling pipeline (31), the cooling liquid flows into the water tank (41), and then flows through the pipeline under the ring track (10). The cooling liquid is used to cool the inside of the ring track (10) again to prevent deformation due to high temperature, affecting use. Then it flows to the cooling liquid tank through the pipeline, and is mixed with the cooling liquid for recycling. When the rough machining clamping assembly (5) and the fine machining clamping assembly (6) move on the ring track (10), the long-time operation of the equipment may cause the deformation of the ring track (10); When the rough machining clamping assembly (5) or the fine machining clamping assembly (6) is stuck at a certain area on the ring track (10), the staff opens the nearest pressure valve (42) in the control terminal to increase the flow of cooling liquid in that area and cool it down. When the rough machining clamping assembly (5) or the fine machining clamping assembly (6) passes through the area, the opened pressure valve (42) is closed, and the cooling liquid flow is increased point by point at the overheated point of the ring track (10).

2. The polishing table for processing of aluminum alloy castings according to claim 1, characterized in that: The ring track (10) is slidably connected with a clamping base (11) above it. Four groups of connecting shafts (12) are fixedly connected to the bottom of the clamping base (11). The connecting shafts (12) are distributed on both sides of the ring track (10). Bearings on the bottom of the connecting shaft (12) are connected with rollers (13). The inner and outer sides of the ring track (10) are provided with grooves. The rollers (13) roll in the grooves. A motor (25) is fixedly connected to the top of one corner of the clamping base (11). The output end of the motor (25) is fixedly connected with a drive shaft (26). The drive shaft (26) penetrates through the clamping base (11) and is connected with it through a bearing. The bottom of the drive shaft (26) is fixedly connected with a gear (27). The gear (27) is located in the groove on the inner side of the ring track (10). A circle of racks (24) is fixedly connected to the groove on the inner side of the ring track (10). The rack (24) is matched with the gear (27).

3. The polishing table for processing of aluminum alloy castings according to claim 2, characterized in that: The clamping base (11) is "convex", the clamping base (11) is fixedly connected with the telescopic rod (14) at the convex position, the telescopic rod (14) is controlled by the gas cylinder to extend or retract, the clamping base (11) is provided with a U-shaped groove at the top, the U-shaped groove is slidably connected with the guide strip (15), the U-shaped groove is provided with a rack electric sliding device, the rack electric sliding device is engaged with the bottom of the guide strip (15), and the driving of the rack electric sliding device is a motor.

4. The polishing table for processing of aluminum alloy castings according to claim 3, characterized in that: The both ends of the guide strip (15) are fixedly connected with the limiting block (22), the bottom of the limiting block (22) is fixedly connected with the universal wheel (23), the top of the guide strip (15) is fixedly connected with the connecting seat (16), the top of the connecting seat (16) is fixedly connected with the clamping platform (17), the clamping platform (17) is threadedly connected with the fixing seat (18), the top of the fixing seat (18) is fixedly connected with the bench vice (19), one side of the bench vice (19) is provided with the threaded rod (20), and the top of the threaded rod (20) penetrates the handle (21).

5. The polishing table for processing of aluminum alloy castings according to claim 4, characterized in that: The lifting mechanism (9) is a hydraulic structure, the lifting mechanism (9) is provided with a sliding groove (28), the sliding groove (28) is slidably connected with the sliding seat (29), the sliding seat (29) is fixedly connected with the hydraulic structure in the lifting mechanism (9), one side of the sliding seat (29) is communicated with the cooling pipeline (31), the water outlet end of the cooling pipeline (31) is close to the coarse sand wheel (34), the front of the sliding seat (29) is fixedly connected with the main shaft box (30), the output end of the main shaft box (30) is fixedly connected with the main shaft (33), the main shaft (33) is connected with the protective cover (32) and penetrates, and the coarse sand wheel (34) is located in the protective cover (32) and is fixedly connected with the main shaft (33).

6. The polishing table for processing of aluminum alloy castings according to claim 5, characterized in that: The table top (1) is provided with two groups of positioning holes (36), the positioning holes (36) are located outside the annular track (10), and the size of the positioning holes (36) is matched with the telescopic rod (14).

7. An aluminum alloy casting machining polishing table according to claim 6, characterized in that: The bottom of the table top (1) is fixedly connected with six groups of supporting columns (2), the bottom of the supporting column (2) is fixedly connected with the base plate (3), the bottom of the base plate (3) is fixedly connected with the base (4), and the lifting mechanism (9) is fixedly connected with the base (4).

8. The polishing table for processing of aluminum alloy castings according to claim 7, characterized in that: The lifting mechanism (9), the clamping base (11), the telescopic rod (14), the motor (25), the main shaft box (30), the cooling pipeline (31), the first temperature sensor (35), the second temperature sensor (38), the first camera (39), the second camera (40) and the pressure valve (42) are electrically connected.

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