Bearing cylindrical grinding machine

Abstract

The invention discloses a bearing cylindrical grinding machine which comprises a bottom plate, a transmission box is arranged on the bottom plate, a magnetic chuck is arranged on one side of the transmission box, a grinding mechanism is arranged on one side of the magnetic chuck, a fixing disc is arranged on the side, away from the transmission box, of the magnetic chuck, and a first fixing cylinder is fixedly connected to one side of the fixing disc. The first fixing cylinder is fixedly connected with a second fixing cylinder through a plurality of connecting frames, the outer surfaces of the first fixing cylinder and the second fixing cylinder are connected with positioning plates through a plurality of first connecting rods, the positioning plates are arranged in the circumferential direction with the first fixing cylinder as the circle center, and one end of each first connecting rod is rotationally connected with the outer surface of the corresponding first fixing cylinder and the second fixing cylinder. The other ends of the first connecting rods are rotationally connected with the positioning plates, the fixing disc is provided with an adjusting mechanism which enables the positioning plates to expand outwards or contract inwards, through the technical scheme, the bearing debugging time is shortened, and therefore the machining efficiency of the grinding machine is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding machines, and particularly relates to an external cylindrical grinding machine for bearings. Background Art

[0002] In the prior art, the grinding process of the outer circle of large bearing rings generally uses vertical grinding machines, and electromagnetic fixtures are mostly used to fix the bearings to be processed. Due to the volume and weight limitations of large bearing rings, in actual operation, the large bearing rings are usually hoisted above the chuck of the grinding machine by a hoisting method, and the axis of the bearing ring is made to be approximately perpendicular to the upper surface of the chuck by setting multiple lifting points. Then, the chuck is electrified so that the bearing is fixed on the surface of the chuck by electromagnetic suction.

[0003] However, when hoisting a large bearing ring above the chuck of the grinding machine, due to the lack of preliminary positioning and support for the bearing, the operator needs to spend a lot of time and effort to adjust the position of the bearing ring on the chuck to make its central axis align with the central axis of the chuck as much as possible. This not only increases the time for debugging the bearing center each time but also reduces the processing efficiency of the grinding machine. Summary of the Invention

[0004] The main object of the present invention is to provide an external cylindrical grinding machine for bearings, aiming to reduce the time for bearing debugging and thus improve the processing efficiency.

[0005] To achieve the above object, the present invention provides an external cylindrical grinding machine for bearings, including a bottom plate. A transmission box is provided on the bottom plate. A magnetic chuck is provided on one side of the transmission box. A grinding mechanism is provided on one side of the magnetic chuck. A fixing plate is provided on the side of the magnetic chuck away from the transmission box. A first fixing cylinder is fixedly connected to one side of the fixing plate. The first fixing cylinder is fixedly connected to a second fixing cylinder through a plurality of connecting frames, and the central axes of the first fixing cylinder and the second fixing cylinder coincide with the central axis of the magnetic chuck. The outer surfaces of the first fixing cylinder and the second fixing cylinder are connected to a positioning plate through a plurality of first connecting rods, and each positioning plate is circumferentially arranged with the first fixing cylinder as the center. One end of each first connecting rod is rotatably connected to the outer surfaces of the corresponding first fixing cylinder and the second fixing cylinder respectively. The other end of the first connecting rod is rotatably connected to the positioning plate, and one side of each first connecting rod is inclined from one side of the first fixing cylinder to the side away from the magnetic chuck. An adjusting mechanism for making each positioning plate open outwards or contract inwards is provided on the fixing plate.

[0006] In a possible implementation manner, the adjusting mechanism includes a first movable cylinder, a second movable cylinder, an adjusting lead screw, an adjusting block, and a plurality of second connecting rods that are rotatably connected to the outer surfaces of the first movable cylinder and the second movable cylinder on one side. The adjusting lead screw is rotatably connected to the inside of the first fixed cylinder and the second fixed cylinder, and one side of the adjusting lead screw extends to the outside of the second fixed cylinder and is fixedly connected to the adjusting block. The first movable cylinder is arranged between the first fixed cylinder and the second fixed cylinder and is threadedly connected to the adjusting lead screw. The second movable cylinder is arranged on the side of the adjusting lead screw away from the magnetic chuck and is threadedly connected to the adjusting lead screw. The other sides of the second connecting rods are all rotatably connected to the positioning plate, and one sides of the second connecting rods are inclined from one side of the first movable cylinder towards the side close to the magnetic chuck.

[0007] In a possible implementation manner, a cooling mechanism for cooling the bearing is provided on the bottom plate. The cooling mechanism includes a filter box, a filter screen arranged inside the filter box, and a cooling pipe. The filter box is arranged on the top of the bottom plate and is located below the grinding mechanism. One side of the cooling pipe is arranged above the grinding mechanism, and the other side of the cooling pipe is communicated with the bottom of the filter box through a water pump.

[0008] In a possible implementation manner, a vibration mechanism for vibrating the filter screen up and down is provided inside the filter box. The vibration mechanism includes elastic members arranged at the four corners of the bottom of the filter screen and a driving assembly for intermittently compressing the elastic members by the filter screen. Support plates are fixedly connected to the four corners of the filter box close to the bottom of the filter screen. One ends of the elastic members are abutted against the surfaces of the support plates, and the other ends of the elastic members are abutted against the bottom of the filter screen.

[0009] In a possible implementation manner, the driving assembly includes a traction block, a rotating shaft, and a servo motor. The rotating shaft is rotatably arranged inside the filter box and is arranged at the bottom of the filter screen. The servo motor is arranged on the side of the filter box, and the output end of the servo motor is fixedly connected to the rotating shaft. The traction block is arranged at the bottom of the filter screen and is fixedly connected to the bottom of the filter screen. An extension portion is provided on one side of the traction block. A rotating cylinder is fixedly connected to the side of the rotating shaft close to the traction block. A plurality of push rods are arranged on the outer surface of the rotating cylinder at intervals, and the push rods are circumferentially arranged with the rotating cylinder as the center. The push rods are in contact with the extension portion.

[0010] In a possible implementation manner, pulleys are rotatably connected to the push rods, and the pulleys are in contact with the extension portion.

[0011] In a possible implementation manner, guide rods are fixedly connected to the tops of the support plates. The filter screen is slidably connected to the guide rods, and the elastic members are respectively sleeved on the outer surfaces of the guide rods.

[0012] In a possible implementation manner, a cleaning assembly for cleaning impurities on the surface of the bearing after grinding is further provided on the bottom plate. The cleaning assembly includes an air supply cylinder, a piston, a cleaning nozzle, an air supply pipe, a first one-way valve, a second one-way valve, an air inlet pipe, two third connecting rods, and a fourth connecting rod. The air supply cylinder is fixedly connected to the inside of the filter box. An air supply chamber is provided inside the air supply cylinder. The piston is slidably connected to the inside of the air supply chamber. The air supply pipe and the air inlet pipe are both communicated with the side of the air supply chamber away from the piston. The cleaning nozzle is arranged at the bottom of the magnetic chuck through a support frame. The other end of the air supply pipe is communicated with the inside of the cleaning nozzle. An opening is provided on the side of the rotating shaft close to the piston. The two third connecting rods are respectively arranged on both sides of the opening and fixedly connected to the rotating shaft. One end of the fourth connecting rod is rotatably connected to the two third connecting rods. The other end of the fourth connecting rod is rotatably connected to the piston, and the length of the piston is greater than the length of the third connecting rod. The first one-way valve is arranged on the air inlet pipe, so that the air inlet pipe can only intake air and cannot exhaust air. The second one-way valve is arranged on the air supply pipe, so that the air supply pipe can only exhaust air and cannot intake air.

[0013] In a possible implementation manner, rolling bearings are arranged inside both the first fixing cylinder and the second fixing cylinder. The adjusting lead screw is fixedly connected to the inner ring of the rolling bearing. The fixing plate is fixedly connected to the magnetic chuck through a plurality of bolts.

[0014] Through the technical solution of the present invention, by arranging the fixing plate, the first fixing cylinder, the second fixing cylinder, the positioning plate and the adjusting mechanism, before clamping a large bearing, a worker can use the adjusting mechanism to make each positioning plate open outwards until it matches the inner diameter of the bearing outer ring. Then, the worker uses a crane to lift the bearing, makes the inner circle of the bearing outer ring contact the surfaces of each positioning plate, and then slowly pushes the bearing along the surfaces of the positioning plates until it contacts the magnetic chuck. Subsequently, the magnetic chuck is electrified to fix the bearing on the surface of the magnetic chuck through electromagnetic suction. The arranged positioning plates can perform preliminary positioning and support on the bearing, greatly reducing the time and energy of the operator for debugging the position of the bearing ring, thereby improving the installation efficiency and the processing efficiency of the grinding machine. In addition, the adjusting mechanism can make the positioning plate open outwards or contract inwards to adapt to large bearing rings of different sizes, improving the versatility and adaptability of the grinding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0016] Figure 1 It is a schematic structural diagram of the first embodiment; Figure 2 Structural schematic diagram of the fixed disk and the adjustment mechanism in the first embodiment Figure 3 Structural schematic diagram of the second embodiment Figure 4 Structural schematic diagram of the filter box and the vibration mechanism in the second embodiment Figure 5 Structural schematic diagram of the filter screen, the drive assembly, and the cleaning assembly in the second embodiment Figure 6 is Figure 5 the enlarged schematic diagram at position A in Figure 7 Partial structural sectional view schematic diagram of the drive assembly and the cleaning assembly

[0017] Explanation of the reference numerals in the drawings: 1. Bottom plate; 101. Transmission box; 102. Magnetic chuck; 103. Fixed disk; 104. First fixed cylinder; 105. Connecting frame; 106. Second fixed cylinder; 107. First connecting rod; 108. Positioning plate; 2. Grinding mechanism; 3. First movable cylinder; 301. Second movable cylinder; 302. Adjusting lead screw; 303. Adjusting block; 304. Second connecting rod; 305. Rolling bearing; 306. Bolt; 4. Filter box; 401. Filter screen; 402. Cooling pipe; 403. Elastic member; 404. Support plate; 5. Traction block; 501. Rotating shaft; 502. Servo motor; 503. Extension part; 504. Rotating cylinder; 505. Pushing rod; 506. Pulley; 507. Guide rod; 6. Air supply cylinder; 601. Piston; 602. Cleaning nozzle; 603. Air supply pipe; 604. First one-way valve; 605. Second one-way valve; 606. Air inlet pipe; 607. Third connecting rod; 608. Fourth connecting rod; 609. Air supply cavity; 610. Support frame; 611. Opening

[0018] The realization, functional features, and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings Detailed implementation manners

[0019] In order to make the object, technical solution, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application Embodiment

[0020] Refer to Figure 1-2, this embodiment provides an external cylindrical grinder for bearings, which includes a base plate 1. A transmission box 101 is provided on the base plate 1. A magnetic chuck 102 is provided on one side of the transmission box 101, and a grinding mechanism 2 is provided on one side of the magnetic chuck 102. It should be noted that during the bearing grinding process, the magnetic chuck 102 and the grinding wheel in the grinding mechanism 2 rotate in opposite directions, that is, one rotates clockwise and the other rotates counterclockwise, so as to grind the outer circle of the bearing. As for how the magnetic chuck 102 adsorbs the bearing, the relevant content has been described in detail in the invention patent with the publication number CN106346322B. Therefore, this embodiment will not repeat the prior art.

[0021] Furthermore, a fixed plate 103 is provided on the side of the magnetic chuck 102 away from the transmission box 101. A first fixed cylinder 104 is fixedly connected to one side of the fixed plate 103. The first fixed cylinder 104 is fixedly connected to a second fixed cylinder 106 through a plurality of connecting frames 105. The central axes of the first fixed cylinder 104 and the second fixed cylinder 106 coincide with the central axis of the magnetic chuck 102. The outer surfaces of the first fixed cylinder 104 and the second fixed cylinder 106 are connected to a positioning plate 108 through a plurality of first connecting rods 107. Each positioning plate 108 is circumferentially arranged with the first fixed cylinder 104 as the center. One end of each first connecting rod 107 is rotatably connected to the outer surfaces of the corresponding first fixed cylinder 104 and the second fixed cylinder 106 respectively, and the other end of the first connecting rod 107 is rotatably connected to the positioning plate 108. One side of each first connecting rod 107 is inclined from one side of the first fixed cylinder 104 or the second fixed cylinder 106 to the side away from the magnetic chuck 102. An adjusting mechanism for expanding or contracting each positioning plate 108 outward or inward is provided on the fixed plate 103.

[0022] Before the worker installs a large bearing, first measure the inner diameter of the inner circle of the bearing, and then use the adjusting mechanism to adjust the distance between two opposite positioning plates 108 to match the inner diameter of the inner circle of the bearing. Then, the worker uses a crane to lift the bearing, make the inner circle of the outer ring of the bearing contact the surfaces of each positioning plate 108, and then slowly push the bearing along the surfaces of the positioning plates 108 until it contacts the magnetic chuck 102. Subsequently, energize the magnetic chuck 102 to fix the bearing on the surface of the magnetic chuck 102 through electromagnetic suction. The provided positioning plates 108 can perform preliminary positioning and support on the bearing, greatly reducing the time and effort of the operator to adjust the position of the bearing ring, thereby improving the installation efficiency.

[0023] Specifically, the adjusting mechanism includes a first movable cylinder 3, a second movable cylinder 301, an adjusting lead screw 302, an adjusting block 303, and a plurality of second connecting rods 304 rotatably connected to the outer surfaces of the first movable cylinder 3 and the second movable cylinder 301 on one side. The adjusting lead screw 302 is rotatably connected inside the first fixed cylinder 104 and the second fixed cylinder 106, and one side of the adjusting lead screw 302 extends outside the second fixed cylinder 106 and is fixedly connected to the adjusting block 303. The first movable cylinder 3 is arranged between the first fixed cylinder 104 and the second fixed cylinder 106 and is threadedly connected to the adjusting lead screw 302. The second movable cylinder 301 is arranged on the side of the adjusting lead screw 302 away from the magnetic chuck 102 and is threadedly connected to the adjusting lead screw 302. The other sides of the second connecting rods 304 are all rotatably connected to the positioning plate 108, and one side of each second connecting rod 304 is inclined from one side of the first movable cylinder 3 or the second movable cylinder 301 towards the side close to the magnetic chuck 102.

[0024] During use, the worker can rotate the adjusting block 303 through a tool. The adjusting block 303 drives the adjusting lead screw 302 to rotate, thereby driving the first movable cylinder 3 and the second movable cylinder 301 to move simultaneously towards the direction close to the magnetic chuck 102. At the same time, the first movable cylinder 3 and the second movable cylinder 301 will drive one side of the second connecting rod 304 to move, while the other side of the second connecting rod 304 will push the positioning plate 108 to expand outwards. At the same time, the first connecting rod 107 rotates clockwise by a certain angle under the action of the positioning plate 108.

[0025] This solution realizes the synchronous adjustment of multiple positioning plates 108 through one adjusting lead screw 302, and the operation is simple and fast. The threaded connection method enables the positioning plate 108 to be locked at any position, enhancing the adaptability of the positioning plate 108 and enabling effective positioning of bearings with different inner diameters.

[0026] In addition, in this solution, one side of each first connecting rod 107 is inclined from one side of the first fixed cylinder 104 or the second fixed cylinder 106 towards the side away from the magnetic chuck 102, and one side of each second connecting rod 304 is inclined from one side of the first movable cylinder 3 or the second movable cylinder 301 towards the side close to the magnetic chuck 102. Through this design, when the positioning plate 108 supports the bearing, a triangular structure is formed among the first connecting rod 107, the second connecting rod 304, and the adjusting lead screw 302, thereby improving the supporting ability and structural strength of the positioning plate 108 and enabling it to provide more stable support and positioning for heavier bearings.

[0027] In this embodiment, rolling bearings 305 are provided inside both the first fixed cylinder 104 and the second fixed cylinder 106. The adjusting lead screw 302 is fixedly connected to the inner ring of the rolling bearing 305. The fixed disk 103 is fixedly connected to the magnetic chuck 102 through a plurality of bolts 306. The provided rolling bearing 305 can effectively reduce the frictional resistance when the adjusting lead screw 302 rotates, improve the flexibility and stability of rotation, and facilitate the operation of workers. Secondly, the fixed disk 103 is fixedly connected to the magnetic chuck 102 through a plurality of bolts 306. This connection method facilitates the installation and disassembly of the fixed disk 103. At the same time, workers can replace the fixed disk 103 of different sizes and the structures for supporting and positioning bearings thereon according to needs to ensure effective positioning of bearings of different sizes. Embodiment

[0028] Based on Embodiment 1, referring to Figure 3-7 , in this embodiment, a cooling mechanism for cooling the bearing is provided on the bottom plate 1. The cooling mechanism includes a filter box 4, a filter screen 401 provided inside the filter box 4, and a cooling pipe 402. The filter box 4 is arranged on the top of the bottom plate 1 and is located below the grinding mechanism 2 (i.e., below the grinding wheel in the grinding mechanism 2). One side of the cooling pipe 402 is arranged above the grinding mechanism 2, and the other side of the cooling pipe 402 is communicated with the bottom of the filter box 4 through a water pump.

[0029] The outlet of the cooling pipe 402 should face the position where the grinding wheel in the grinding mechanism 2 contacts the outer circle of the bearing to effectively reduce the temperature in the grinding area and prevent the bearing from being burned due to high temperature. At the same time, the coolant can wash away the particulate matter generated during the grinding process and flow into the filter box 4 together with the coolant.

[0030] In addition, this design enables the coolant to be recycled in the cooling system: the coolant is pumped from the filter box 4 to the cooling pipe 402 through a water pump, and then sprayed onto the grinding mechanism 2 through the cooling pipe 402 to cool the bearing. Subsequently, it carries the impurities generated by grinding and flows back to the filter box 4. After being filtered by the filter screen 401, the coolant is sent back to the cooling pipe 402 by the water pump again, thus forming a closed-loop circulation system, avoiding waste of water resources and improving the utilization efficiency of water. It should be noted that the cooling pipe 402 can also be connected to an external water source.

[0031] In this embodiment, a vibration mechanism for vibrating the filter screen 401 up and down is provided inside the filter box 4. The vibration mechanism includes elastic members 403 arranged at the four corners of the bottom of the filter screen 401 and a driving assembly that intermittently compresses the elastic members 403 of the filter screen 401. Four support plates 404 are fixedly connected to the four corners near the bottom of the filter screen 401 inside the filter box 4. One end of each elastic member 403 abuts against the surface of the support plate 404, and the other end of each elastic member 403 abuts against the bottom of the filter screen 401.

[0032] The provided vibration mechanism can prevent impurities from accumulating on the filter screen 401, making the filtering effect of the filter screen 401 better, avoiding frequent replacement of the filter screen 401 due to impurity blockage, extending the service life of the filter screen 401, and reducing production costs.

[0033] Specifically, the driving component includes a traction block 5, a rotating shaft 501, and a servo motor 502. The rotating shaft 501 rotates inside the filter box 4 and is arranged at the bottom of the filter screen 401. The servo motor 502 is arranged on the side of the filter box 4, and the output end of the servo motor 502 is fixedly connected to the rotating shaft 501. The traction block 5 is arranged at the bottom of the filter screen 401 and is fixedly connected to the bottom of the filter screen 401. An extension 503 is provided on one side of the traction block 5. A rotating cylinder 504 is fixedly connected to the side of the rotating shaft 501 close to the traction block 5. A number of push rods 505 are provided on the outer surface of the rotating cylinder 504 at intervals, and each push rod 505 is circumferentially arranged with the rotating cylinder 504 as the center. The push rod 505 abuts against the extension 503.

[0034] During use, the worker starts the servo motor 502. The output end of the servo motor 502 drives the rotating shaft 501 to rotate, the rotating shaft 501 then drives the rotating cylinder 504 to rotate, and the rotating cylinder 504 drives the push rod 505 to rotate. When one side of the push rod 505 contacts the extension 503 on the traction block 5, the push rod 505 will drive the extension 503 and the traction block 5 to move downward, and the other side of the traction block 5 will cause the filter screen 401 to move towards the compression elastic member 403. When the push rod 505 disengages from the extension 503, each elastic member 403 resumes deformation and moves the filter screen 401 in the opposite direction. Every time the next push rod 505 contacts the extension 503, the action is repeated, so that the filter screen 401 vibrates, preventing its surface from being blocked due to excessive accumulation of particulate matter.

[0035] In this solution, the driving component only needs the servo motor 502 to rotate in one direction to achieve the up and down vibration of the filter screen 401, thereby extending the service life of the servo motor 502.

[0036] Furthermore, a pulley 506 is rotatably connected to each push rod 505, and each pulley 506 abuts against the extension 503. By providing the pulley 506, the sliding friction is changed into rolling friction, reducing the wear between the push rod 505 and the traction block 5 (extension 503), improving the service life of the components, and also making the vibration process of the filter screen 401 more stable and smooth.

[0037] Secondly, a guide rod 507 is fixedly connected to the top of each support plate 404, the filter screen 401 is slidably connected to each guide rod 507, and each elastic member 403 is respectively sleeved on the outer surface of the wire rod. The set guide rod 507 can guide the vibration of the filter screen 401, ensuring that the filter screen 401 remains stable during the up and down vibration process without offset or shaking, thereby improving the stability and reliability of the vibration mechanism. At the same time, it also ensures that the elastic member 403 will not be offset or misaligned during the compression and extension process, thereby extending the service life of the elastic member 403.

[0038] When the grinding wheel is grinding the outer circle of the bearing, the abrasive particles on the grinding wheel may remain on the surface of the workpiece. The residual particles will affect the contact quality between the grinding wheel and the workpiece, resulting in uneven grinding during the grinding process. For example, the presence of particles may cause uneven local contact of the grinding wheel, resulting in local over-grinding or under-grinding, affecting the size and surface quality of the workpiece.

[0039] In order to avoid this situation, the present embodiment further provides a cleaning assembly on the bottom plate 1 for cleaning impurities on the bearing surface after grinding, and the cleaning assembly includes an air supply cylinder 6, a piston 601, a cleaning nozzle 602, an air supply pipe 603, a first one-way valve 604, a second one-way valve 605, an air intake pipe 606, two third connecting rods 607, and a fourth connecting rod 608. The air supply cylinder 6 is fixedly connected to the inside of the filter box 4, an air supply cavity 609 is provided inside the air supply cylinder 6, the piston 601 is slidably connected to the inside of the air supply cavity 609, the air supply pipe 603 and the air intake pipe 606 are both connected to the side of the air supply cavity 609 away from the piston 601, and the cleaning nozzle 602 is arranged on the magnetic chuck 102 through a support frame 610. At the bottom, the other end of the air supply pipe 603 is connected to the inside of the cleaning nozzle 602, and an opening 611 is provided on the side of the rotating shaft 501 close to the piston 601. Two third connecting rods 607 are respectively arranged on both sides of the opening 611 and are fixedly connected to the rotating shaft 501. One end of the fourth connecting rod 608 is rotatably connected to the two third connecting rods 607, and the other end of the fourth connecting rod 608 is rotatably connected to the piston 601, and the length of the piston 601 is greater than the length of the third connecting rod 607. The first one-way valve 604 is arranged on the air inlet pipe 606, so that the air inlet pipe 606 can only take in air but not exhaust air. The second one-way valve 605 is arranged on the air supply pipe 603, so that the air supply pipe 603 can only exhaust air but not take in air.

[0040] By setting up a cleaning component, particles and impurities on the outer cylindrical surface of the bearing after grinding can be effectively removed, thereby ensuring the uniformity of the outer cylindrical surface of the bearing during the next grinding, and further ensuring the final product quality of the bearing.

[0041] When the rotating shaft 501 rotates under the action of the servo motor 502, the rotating shaft 501 drives the third connecting rod 607 to rotate. The third connecting rod 607 then drives one side of the fourth connecting rod 608 to rotate, and further drives the other end of the fourth connecting rod 608 to drive the piston 601 to move within the air supply chamber 609. When the piston 601 moves towards the direction close to the rotating shaft 501, the volume within the air supply chamber 609 increases, the first one-way valve 604 opens, the second one-way valve 605 closes, and the intake pipe 606 starts to intake air and fills the air supply chamber 609. When the piston 601 moves towards the direction away from the rotating shaft 501, the volume within the air supply chamber 609 decreases, the piston 601 pushes the gas within the air supply chamber 609 into the supply pipe 603. At this time, the second one-way valve 605 opens, the first one-way valve 604 closes, and the gas is then transported through the supply pipe 603 to the cleaning nozzle 602 and sprayed out by the cleaning nozzle 602 to perform jet cleaning on the surface of the ground bearing, removing surface impurities and debris, thereby improving the cleanliness and surface quality of the bearing.

[0042] The cleaning component in this solution utilizes the power source of the rotating shaft 501 to achieve the cleaning function, without the need for an additional power device, realizing the effective utilization of resources and achieving the effect of energy conservation and environmental protection.

[0043] At the same time, traditional contact cleaning may require the use of various special cleaning tools, and these tools need to be regularly replaced due to wear during use, increasing the production cost. Non-contact jet cleaning only needs to utilize the air flow generated by the cleaning component, without the need for additional contact cleaning tools, reducing the replacement cost of the cleaning tools.

[0044] In the attached drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0045] The above is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. An external cylindrical grinding machine for bearings, comprising a base plate (1), a transmission box (101) is provided on the base plate (1), a magnetic chuck (102) is provided on one side of the transmission box (101), and a grinding mechanism (2) is provided on one side of the magnetic chuck (102), characterized in that: On one side of the magnetic chuck (102) away from the transmission box (101), there is a fixed plate (103). On one side of the fixed plate (103), a first fixed cylinder (104) is fixedly connected. The first fixed cylinder (104) is fixedly connected to a second fixed cylinder (106) through a number of connecting frames (105). And the central axes of the first fixed cylinder (104) and the second fixed cylinder (106) coincide with the central axis of the magnetic chuck (102). The outer surfaces of the first fixed cylinder (104) and the second fixed cylinder (106) are connected to a positioning plate (108) through a number of first connecting rods (107). And each positioning plate (108) is circumferentially arranged with the first fixed cylinder (104) as the center. One end of each first connecting rod (107) is respectively rotatably connected to the outer surfaces of the corresponding first fixed cylinder (104) and the second fixed cylinder (106). The other end of the first connecting rod (107) is rotatably connected to the positioning plate (108). And one side of each first connecting rod (107) is inclined from one side of the first fixed cylinder (104) to the side away from the magnetic chuck (102). On the fixed plate (103), there is an adjusting mechanism for making each positioning plate (108) open outwards or contract inwards.

2. The external cylindrical grinding machine for bearings according to claim 1, wherein: The adjusting mechanism includes a first movable cylinder (3), a second movable cylinder (301), an adjusting lead screw (302), an adjusting block (303), and a number of second connecting rods (304) with one side rotatably connected to the outer surfaces of the first movable cylinder (3) and the second movable cylinder (301). The adjusting lead screw (302) is rotatably connected to the inside of the first fixed cylinder (104) and the second fixed cylinder (106). And one side of the adjusting lead screw (302) extends to the outside of the second fixed cylinder (106) and is fixedly connected to the adjusting block (303). The first movable cylinder (3) is arranged between the first fixed cylinder (104) and the second fixed cylinder (106) and is threadedly connected to the adjusting lead screw (302). The second movable cylinder (301) is arranged on the side of the adjusting lead screw (302) away from the magnetic chuck (102) and is threadedly connected to the adjusting lead screw (302). The other side of each second connecting rod (304) is rotatably connected to the positioning plate (108). And one side of each second connecting rod (304) is inclined from one side of the first movable cylinder (3) to the side close to the magnetic chuck (102).

3. A cylindrical grinder for bearing outer rings according to claim 1, characterized in that: On the bottom plate (1), there is a cooling mechanism for cooling the bearing. The cooling mechanism includes a filter box (4), a filter screen (401) arranged inside the filter box (4), and a cooling pipe (402). The filter box (4) is arranged on the top of the bottom plate (1) and is located below the grinding mechanism (2). One side of the cooling pipe (402) is arranged above the grinding mechanism (2). The other side of the cooling pipe (402) is communicated with the bottom of the filter box (4) through a water pump.

4. The cylindrical grinder for bearing outer ring according to claim 3, wherein: Inside the filter box (4), there is a vibration mechanism for vibrating the filter screen (401) up and down. The vibration mechanism includes elastic members (403) arranged at the four corners of the bottom of the filter screen (401) and a driving assembly for intermittently compressing the elastic members (403) by the filter screen (401). At the four corners near the bottom of the filter screen (401) inside the filter box (4), support plates (404) are fixedly connected. One end of each elastic member (403) abuts against the surface of the support plate (404), and the other end of each elastic member (403) abuts against the bottom of the filter screen (401).

5. The cylindrical grinder for bearing outer ring according to claim 4, wherein: The driving assembly includes a traction block (5), a rotating shaft (501), and a servo motor (502). The rotating shaft (501) rotates inside the filter box (4) and is arranged at the bottom of the filter screen (401). The servo motor (502) is arranged on the side of the filter box (4), and the output end of the servo motor (502) is fixedly connected to the rotating shaft (501). The traction block (5) is arranged at the bottom of the filter screen (401) and is fixedly connected to the bottom of the filter screen (401). An extension portion (503) is provided on one side of the traction block (5). A rotating cylinder (504) is fixedly connected to the side of the rotating shaft (501) close to the traction block (5). A number of push rods (505) are provided on the outer surface of the rotating cylinder (504) at intervals, and each push rod (505) is circumferentially arranged with the rotating cylinder (504) as the center. The push rod (505) abuts against the extension portion (503).

6. The external cylindrical grinder for bearings according to claim 5, characterized in that: A pulley (506) is rotatably connected to each push rod (505), and each pulley (506) abuts against the extension portion (503).

7. A cylindrical grinder for bearing outer rings, characterized in that: A guide rod (507) is fixedly connected to the top of each support plate (404). The filter screen (401) is slidably connected to each guide rod (507), and each elastic member (403) is sleeved on the outer surface of the guide rod respectively.

8. A cylindrical grinder for bearing outer rings according to claim 5, characterized in that: A cleaning assembly for cleaning impurities on the surface of the bearing after grinding is further provided on the bottom plate (1). The cleaning assembly includes an air supply cylinder (6), a piston (601), a cleaning nozzle (602), an air supply pipe (603), a first one-way valve (604), a second one-way valve (605), an air inlet pipe (606), two third connecting rods (607), and a fourth connecting rod (608). The air supply cylinder (6) is fixedly connected to the inside of the filter box (4). An air supply chamber (609) is provided inside the air supply cylinder (6). The piston (601) is slidably connected to the inside of the air supply chamber (609). The air supply pipe (603) and the air inlet pipe (606) are both communicated with the side of the air supply chamber (609) away from the piston (601). The cleaning nozzle (602) is arranged at the bottom of the magnetic chuck (102) through a support frame (610). The other end of the air supply pipe (603) is communicated with the inside of the cleaning nozzle (602). An opening (611) is provided on the side of the rotating shaft (501) close to the piston (601). The two third connecting rods (607) are respectively arranged on both sides of the opening (611) and fixedly connected to the rotating shaft (501). One end of the fourth connecting rod (608) is rotatably connected to the two third connecting rods (607). The other end of the fourth connecting rod (608) is rotatably connected to the piston (601), and the length of the piston (601) is greater than the length of the third connecting rod (607). The first one-way valve (604) is arranged on the air inlet pipe (606) so that the air inlet pipe (606) can only intake air and cannot exhaust air. The second one-way valve (605) is arranged on the air supply pipe (603) so that the air supply pipe (603) can only exhaust air and cannot intake air.

9. The external cylindrical grinder for bearing according to claim 2, characterized in that: Rolling bearings (305) are provided inside the first fixed cylinder (104) and the second fixed cylinder (106). The adjusting lead screw (302) is fixedly connected to the inner ring of the rolling bearing (305). The fixed disk (103) is fixedly connected to the magnetic chuck (102) through a plurality of bolts (306).

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