Liquid-free pressurizing equipment for fine grinding of precise bearing steel balls

Abstract

The invention relates to the technical field of steel ball lapping machining, in particular to liquid-free pressurizing equipment for precise bearing steel ball lapping, which comprises a machining box, the machining box is used for containing lapping liquid, the outer wall of the machining box is fixedly connected with a support, and the top end of the support is fixedly connected with an adjusting mechanism. By arranging the adjusting mechanism, the position of the movable plate can be rapidly and accurately adjusted according to steel balls of different sizes, it is ensured that the movable plate is tightly matched with the steel balls in the lapping process, the height of the movable plate is adjusted through rotation of an adjusting screw, and on the basis of ensuring the pressurizing force, the working efficiency is greatly improved. Oil is not needed to be used as a medium, many undesirable phenomena such as oil leakage, unstable pressure, environment pollution and falling of staff caused by oil use are avoided, the problems are fundamentally solved, smooth ball grinding is ensured, the product quality is ensured, and the universality and practicability of equipment are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of steel ball lapping, and in particular to a liquid-free pressurizing device for lapping precision bearing steel balls. Background Art

[0002] In the field of grinding and processing of precision bearing steel balls, traditional processing equipment usually relies on oil as a pressurized medium to achieve the grinding pressure on the steel balls.

[0003] However, this method has many disadvantages that are difficult to overcome. On the one hand, the oil system is prone to oil leakage, which not only causes oil waste and increases production costs, but also pollutes the processing environment and is not conducive to the cleanliness and safety management of the workshop. At the same time, the leaked oil will form an oily surface on the ground, greatly increasing the risk of employees slipping and getting injured. On the other hand, the pressure stability of the oil pressurization system is poor and difficult to control accurately, which directly affects the uniformity and stability of the pressurization pressure during the grinding process of the steel balls, which in turn leads to unstable quality of steel ball grinding. The yield rate of the product is difficult to guarantee and cannot meet the increasing demand for precision bearing production. In addition, there are defects in the recycling of the grinding fluid and the handling of debris during the grinding process. The grinding fluid cannot be effectively filtered and recycled, which not only causes waste of resources, but the grinding fluid containing debris will also cause scratches on the surface of the steel balls and other quality problems; Therefore, in order to overcome the various defects of the above-mentioned traditional equipment, it has become an urgent need in the industry to develop a precision bearing steel ball grinding equipment that can be accurately adjusted, pressurized without liquid, efficiently grinded and easy to maintain. This patent was born based on this background. Summary of the invention

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve the technical problems is: a liquid-free pressurizing device for lapping precision bearing steel balls, comprising: a processing box, the processing box is used to hold lapping liquid, the outer wall of the processing box is fixedly connected with a bracket, the top of the bracket is fixedly connected with an adjusting mechanism, the bottom end of the adjusting mechanism is slidably connected with a movable plate, and the adjusting mechanism is used to control the movable plate to move according to different sizes of steel balls; a grinding mechanism, the grinding mechanism is located at the bottom end of the adjusting mechanism, and the grinding mechanism performs lapping of the steel balls by cooperating with the movable plate; a blocking mechanism, the blocking mechanism is located inside the processing box, and the blocking mechanism is used to filter the lapping liquid used in the lapping process; the adjusting mechanism comprises a mounting frame, the bottom end of the mounting frame is rotatably connected with a rotating assembly, the inner wall of the rotating assembly is threadedly connected with an adjusting screw, the bottom end of the adjusting screw is rotatably connected with a mounting plate, the outer wall of the mounting plate is symmetrically fixedly connected with a limiting rod, the outer wall of the mounting plate is threadedly connected with an adjusting ring, the bottom end of the adjusting ring is rotatably connected with a connecting ring, and a limiting column is arranged at the bottom end of the mounting plate.

[0005] The present invention is further configured such that the outer wall of the mounting frame is fixedly connected to the outer wall of the processing box, the outer wall of the limit rod is slidably connected to the inner wall of the mounting frame, the adjusting screw runs through the mounting frame, and the outer wall of the mounting plate is slidably connected to the outer wall of the movable plate. The adjusting cylinder in the rotating assembly is threadedly connected to the adjusting screw. Due to the threaded action of the adjusting screw and the adjusting cylinder and the rotational connection of the bottom end thereof with the mounting plate, the adjusting screw drives the mounting plate to move up and down when rotating until the movable plate is pressed on the steel ball, thereby adjusting the height of the movable plate.

[0006] The present invention is further configured such that the outer wall of the mounting plate is slidably connected with a sliding block, the outer wall of the sliding block is rotatably connected with a hook, the sliding block is fixedly connected with a connecting ring, the outer wall of the limiting column is fixedly connected with the outer wall of the movable plate, the inner wall of the hook is slidably connected with the outer wall of the limiting column, and the top of the adjusting ring is slidably connected with a latch. The movable plate is placed at the bottom end of the mounting plate, and the hook is hooked on the limiting column on the movable plate, and then the adjusting ring is rotated to drive the rotatably connected connecting ring to move, and drive the sliding block to move, so that the hook applies a pulling force to the limiting column, so that the movable plate cannot be separated from the mounting plate, and the latch is used to prevent the adjusting ring from rotating on the mounting plate, so that the movable plate can be quickly disassembled and assembled.

[0007] The present invention is further configured such that the rotating assembly includes an adjusting cylinder, the top of the adjusting cylinder is fixedly connected to a toothed ring, the inner wall of the adjusting cylinder is slidably connected to an insert rod, the outer wall of the adjusting cylinder is fixedly connected to a fixing rod, and the outer wall of the insert rod is fixedly connected to a reset spring. Under the action of the reset spring, the insert rod moves and resets to be stuck in the toothed ring again, so as to prevent vibration from being generated during the lapping process, causing the adjusting cylinder to loosen and rotate.

[0008] The present invention is further configured such that the inner wall of the adjusting cylinder is threadedly connected to the outer wall of the adjusting screw, the top end of the adjusting cylinder is rotatably connected to the bottom end of the mounting frame, the outer wall of the insert rod is slidably connected to the inner wall of the gear ring, the inner wall of the insert rod is slidably connected to the outer wall of the fixing rod, and the end of the reset spring away from the insert rod is fixedly connected to the outer wall of the adjusting cylinder.

[0009] The present invention is further configured such that the grinding mechanism includes a baffle plate, the inner wall of the baffle plate is rotatably connected to a stationary plate, a flow slot is provided in the wall of the baffle plate, and the bottom end of the baffle plate is fixedly connected to a driving motor through a frame. The driving motor is started to drive the stationary plate to rotate, and the stationary plate cooperates with the moving plate to grind the steel ball, and the water pump is started to extract the grinding liquid in the processing box through the flow pipe, and the telescopic pipe is pulled to guide the grinding liquid to between the moving plate and the stationary plate, so as to play an auxiliary lubrication role for the steel ball during the grinding process.

[0010] The present invention is further configured such that the outer wall of the baffle is slidably connected to the inner wall of the processing box, and the output end of the drive motor is fixedly connected to the outer wall of the static plate.

[0011] The present invention is further configured such that the blocking mechanism includes a filter plate, the inner wall of the four corners of the filter plate is slidably connected to a support rod, the outer wall of the filter plate is fixedly connected to a push spring, the top of the filter plate is provided with a lower pressure plate, the outer wall of the lower pressure plate is rotatably connected to a pull rod, a water pump is provided outside the filter plate, and the outer wall of the water pump is fixedly connected to a flow pipe. The liquid and debris first contact the lower pressure plate, and under the action of gravity, the lower pressure plate rotates, and drives the filter plate to slide on the support rod through the connection of the pull rod, and under the action of the push spring, the filter plate vibrates to prevent debris from blocking the filter plate and affecting the filtering use.

[0012] The present invention is further configured such that the outer wall of the lower pressing plate is slidably connected to the inner wall of the processing box, the end of the pull rod away from the lower pressing plate is rotatably connected to the outer wall of the filter plate, the outer wall of the support rod is fixedly connected to the inner wall of the processing box, the bottom end of the push spring is fixedly connected to the outer wall of the support rod, the bottom end of the circulation pipe is fixedly connected to the inner wall of the processing box, and the top end of the circulation pipe is fixedly connected with a telescopic pipe. The filter plate filters the lapping liquid, which is connected to the processing box through the circulation pipe. Under the action of the water pump, the filtered lapping liquid can be recycled.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention can quickly and accurately adjust the position of the moving plate according to the steel balls of different sizes by setting an adjustment mechanism, ensuring that the moving plate and the steel balls are closely matched during the fine grinding process, and the height of the moving plate can be adjusted by rotating the adjusting screw. On the basis of ensuring the pressure, there is no need to use oil as a medium, avoiding many undesirable phenomena such as oil leakage, unstable pressure, environmental pollution, and employee falls caused by the use of oil, fundamentally solving the problem, ensuring the smooth progress of ball grinding, ensuring product quality, and enhancing the versatility and practicality of the equipment.

[0014] 2. The present invention provides a grinding mechanism, and the static plate rotates under the drive of the driving motor, and cooperates with the dynamic plate to efficiently grind the steel balls. At the same time, the water pump draws the grinding liquid to between the dynamic plate and the static plate, which not only plays an auxiliary lubrication role, reduces the friction loss between the steel balls and the grinding parts, and improves the grinding efficiency, but also can promptly take away the heat and debris generated during the grinding process, thereby improving the grinding effect and the surface quality of the steel balls.

[0015] 3. The present invention provides a barrier mechanism so that the filter plate can effectively filter the lapping liquid, prevent debris from accumulating in the lapping liquid, ensure the cleanliness of the recycled lapping liquid, avoid the adverse effects of impurities on the surface of the steel ball such as scratches, and reduce the waste of lapping liquid and production costs. In addition, the vibration design and tilted setting of the filter plate can effectively prevent debris from clogging the filter plate, facilitate the cleaning of debris accumulated at the bottom of the filter plate, ensure the long-term stable operation of the filtration system, and provide strong support for the continuous and efficient development of lapping work.

[0016] 4. The present invention makes the disassembly and assembly of the movable plate in the adjusting mechanism simple and quick, and during the fine grinding process, the design of components such as the latch and the return spring effectively prevents the adjusting components from loosening due to vibration, thereby ensuring the stability of the equipment during operation, reducing the downtime caused by equipment failure, and improving the production efficiency and the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a structural schematic diagram of the barrier mechanism of the present invention; Figure 4 It is a structural schematic diagram of the regulating mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 6 The present invention Figure 4 A magnified view of the structure at A; Figure 7 The present invention Figure 5 Enlarged view of the structure at B.

[0018] In the figure: 1. processing box; 2. bracket; 3. adjusting mechanism; 31. mounting frame; 32. limiting rod; 33. rotating assembly; 331. gear ring; 332. adjusting cylinder; 333. insert rod; 334. fixing rod; 335. reset spring; 34. adjusting screw; 35. mounting plate; 36. latch; 37. adjusting ring; 38. limiting column; 39. connecting ring; 310. sliding block; 311. hook; 4. moving plate; 5. grinding mechanism; 51. baffle plate; 52. static plate; 53. circulation slot; 54. driving motor; 6. blocking mechanism; 61. filter plate; 62. supporting rod; 63. pushing spring; 64. pulling rod; 65. lower pressure plate; 66. circulation pipe; 67. water pump; 68. telescopic pipe. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Example

[0020] See also Figure 1 - Figure 7 The present invention provides a technical solution: a liquid-free pressurizing device for lapping precision bearing steel balls, comprising: a processing box 1, the processing box 1 is used to contain lapping liquid, the outer wall of the processing box 1 is fixedly connected with a bracket 2, the top of the bracket 2 is fixedly connected with an adjusting mechanism 3, the bottom of the adjusting mechanism 3 is slidably connected with a moving plate 4, the adjusting mechanism 3 is used to control the moving plate 4 to move according to different sizes of steel balls; a grinding mechanism 5, the grinding mechanism 5 is located at the bottom end of the adjusting mechanism 3, and the grinding mechanism 5 performs lapping on the steel balls by cooperating with the moving plate 4; a blocking mechanism 6, the blocking mechanism 6 is located at the bottom end of the adjusting mechanism 3. Inside the processing box 1, the blocking mechanism 6 is used to filter the grinding fluid used in the grinding process; the adjusting mechanism 3 includes a mounting frame 31, the bottom end of the mounting frame 31 is rotatably connected to a rotating assembly 33, the inner wall of the rotating assembly 33 is threadedly connected to an adjusting screw 34, the bottom end of the adjusting screw 34 is rotatably connected to a mounting plate 35, the outer wall of the mounting plate 35 is symmetrically fixedly connected to a limiting rod 32, the outer wall of the mounting plate 35 is threadedly connected to an adjusting ring 37, the bottom end of the adjusting ring 37 is rotatably connected to a connecting ring 39, and a limiting column 38 is arranged at the bottom end of the mounting plate 35.

[0021] The outer wall of the mounting frame 31 is fixedly connected to the outer wall of the processing box 1, the outer wall of the limit rod 32 is slidably connected to the inner wall of the mounting frame 31, the adjusting screw 34 runs through the mounting frame 31, and the outer wall of the mounting plate 35 is slidably connected to the outer wall of the movable plate 4.

[0022] The outer wall of the mounting plate 35 is slidably connected to a sliding block 310, the outer wall of the sliding block 310 is rotatably connected to a hook 311, the sliding block 310 is fixedly connected to a connecting ring 39, the outer wall of the limiting column 38 is fixedly connected to the outer wall of the movable plate 4, the inner wall of the hook 311 is slidably connected to the outer wall of the limiting column 38, and the top end of the adjusting ring 37 is slidably connected to a latch 36.

[0023] The rotating assembly 33 includes an adjusting cylinder 332 , the top of which is fixedly connected to a gear ring 331 , the inner wall of which is slidably connected to an insert rod 333 , the outer wall of which is fixedly connected to a fixing rod 334 , and the outer wall of which is fixedly connected to a return spring 335 .

[0024] The inner wall of the adjusting cylinder 332 is threadedly connected to the outer wall of the adjusting screw 34, the top of the adjusting cylinder 332 is rotatably connected to the bottom end of the mounting bracket 31, the outer wall of the insert rod 333 is slidably connected to the inner wall of the gear ring 331, the inner wall of the insert rod 333 is slidably connected to the outer wall of the fixing rod 334, and the end of the reset spring 335 away from the insert rod 333 is fixedly connected to the outer wall of the adjusting cylinder 332.

[0025] The grinding mechanism 5 comprises a baffle plate 51 , the inner wall of which is rotatably connected to a stationary plate 52 , a flow slot 53 is provided in the wall of the baffle plate 51 , and a driving motor 54 is fixedly connected to the bottom end of the baffle plate 51 through a frame.

[0026] The outer wall of the baffle plate 51 is slidably connected to the inner wall of the processing box 1 , and the output end of the driving motor 54 is fixedly connected to the outer wall of the static plate 52 .

[0027] The blocking mechanism 6 includes a filter plate 61, the inner walls of the four corners of the filter plate 61 are slidably connected to support rods 62, the outer wall of the filter plate 61 is fixedly connected to a push spring 63, a lower pressure plate 65 is provided at the top of the filter plate 61, the outer wall of the lower pressure plate 65 is rotatably connected to a pull rod 64, a water pump 67 is provided outside the filter plate 61, and the outer wall of the water pump 67 is fixedly connected to a flow pipe 66.

[0028] The outer wall of the lower pressure plate 65 is slidingly connected to the inner wall of the processing box 1, the end of the pull rod 64 away from the lower pressure plate 65 is rotatably connected to the outer wall of the filter plate 61, the outer wall of the support rod 62 is fixedly connected to the inner wall of the processing box 1, the bottom end of the push spring 63 is fixedly connected to the outer wall of the support rod 62, the bottom end of the circulation tube 66 is fixedly connected to the inner wall of the processing box 1, and the top end of the circulation tube 66 is fixedly connected with a telescopic tube 68.

[0029] Working principle: When in use, firstly, according to the different sizes of the steel balls, the movable plate 4 of different requirements is installed, and the movable plate 4 is placed at the bottom of the mounting plate 35 through the adjusting mechanism 3, and the hook 311 is hooked on the limiting column 38 on the movable plate 4, and then the adjusting ring 37 is rotated to drive the rotating connecting ring 39 to move, so that the connecting ring 39 drives the sliding block 310 to move, and as the sliding block 310 moves, the hook 311 applies a pulling force to the limiting column 38, so that the movable plate 4 cannot be separated from the mounting plate 35, and then the latch 36 is used to prevent the adjusting ring 37 from rotating on the mounting plate 35, so that the movable plate 4 can be quickly disassembled and assembled; The grinding mechanism 5 is used to place the steel ball in the groove on the static plate 52. When adjusting the position of the movable plate 4 according to the steel balls of different sizes, the rotating assembly 33 is operated to pull the plug rod 333 to slide on the fixed rod 334 to make it free from the restriction of the gear ring 331. At this time, the adjusting cylinder 332 in the rotating assembly 33 can be connected with the adjusting screw 34 through the threaded connection. Due to the threaded action of the adjusting screw 34 and the adjusting cylinder 332 and the rotation connection between the bottom end and the mounting plate 35, the adjusting screw 34 drives the mounting plate 35 to move up and down when rotating, until the movable plate 4 is pressed on the steel ball, thereby adjusting the height of the movable plate 4. After the adjustment is completed, under the action of the reset spring 335, the plug rod 333 moves and resets and is clamped in the gear ring 331 again to prevent vibration during the fine grinding process, which causes the adjusting cylinder 332 to loosen and rotate; After the adjustment is completed, during the lapping process, the driving motor 54 is started to drive the static plate 52 to rotate, and the static plate 52 cooperates with the dynamic plate 4 to lap the steel ball, and the water pump 67 is started to extract the lapping liquid in the processing box 1 through the circulation pipe 66, and the telescopic pipe 68 is pulled to guide the lapping liquid to between the dynamic plate 4 and the static plate 52, which plays an auxiliary lubrication role for the steel ball during the lapping process. The circulation groove 53 opened in the wall of the baffle plate 51 is used for the liquid and debris in the lapping process to flow into the processing box 1; Through the blocking mechanism 6, the filter plate 61 filters the grinding liquid and is connected to the processing box 1 through the circulation pipe 66. Under the action of the water pump 67, the filtered grinding liquid can be recycled. When the liquid and debris in the grinding process flow into the processing box 1, they first contact the lower pressure plate 65. Under the action of gravity, the lower pressure plate 65 rotates in the processing box 1, and drives the filter plate 61 to slide on the support rod 62 through the connection of the pull rod 64, and under the action of the push spring 63, the filter plate 61 vibrates to prevent debris from blocking the filter plate 61 and affecting the filtering use. Through the inclined filter plate 61, under the action of vibration, debris accumulates at the bottom of the filter plate 61. After long-term use, the external port is opened to facilitate the cleaning of the debris.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A liquid-free pressurizing device for lapping precision bearing steel balls, characterized in that: include: A processing box (1), the processing box (1) is used to contain a lapping liquid, the outer wall of the processing box (1) is fixedly connected to a bracket (2), the top end of the bracket (2) is fixedly connected to an adjustment mechanism (3), the bottom end of the adjustment mechanism (3) is slidably connected to a moving plate (4), and the adjustment mechanism (3) is used to control the movement of the moving plate (4) according to steel balls of different sizes; A grinding mechanism (5), the grinding mechanism (5) being located at the bottom end of the adjusting mechanism (3), and the grinding mechanism (5) being used to grind the steel ball in cooperation with the moving plate (4); A barrier mechanism (6), the barrier mechanism (6) being located inside the processing box (1), and the barrier mechanism (6) being used to filter the lapping liquid used in the lapping process; The adjustment mechanism (3) comprises a mounting frame (31), the bottom end of the mounting frame (31) is rotatably connected to a rotating assembly (33), the inner wall of the rotating assembly (33) is threadedly connected to an adjusting screw (34), the bottom end of the adjusting screw (34) is rotatably connected to a mounting plate (35), the outer wall of the mounting plate (35) is symmetrically fixedly connected to a limiting rod (32), the outer wall of the mounting plate (35) is threadedly connected to an adjusting ring (37), the bottom end of the adjusting ring (37) is rotatably connected to a connecting ring (39), and a limiting column (38) is provided at the bottom end of the mounting plate (35).

2. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 1, characterized in that: The outer wall of the mounting frame (31) is fixedly connected to the outer wall of the processing box (1), the outer wall of the limit rod (32) is slidably connected to the inner wall of the mounting frame (31), the adjusting screw (34) passes through the mounting frame (31), and the outer wall of the mounting plate (35) is slidably connected to the outer wall of the movable plate (4).

3. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 2, characterized in that: The outer wall of the mounting plate (35) is slidably connected to a sliding block (310), the outer wall of the sliding block (310) is rotatably connected to a hook (311), the sliding block (310) is fixedly connected to a connecting ring (39), the outer wall of the limiting column (38) is fixedly connected to the outer wall of the movable plate (4), the inner wall of the hook (311) is slidably connected to the outer wall of the limiting column (38), and the top end of the adjusting ring (37) is slidably connected to a latch (36).

4. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 1, characterized in that: The rotating assembly (33) comprises an adjusting cylinder (332), the top end of the adjusting cylinder (332) is fixedly connected to a gear ring (331), the inner wall of the adjusting cylinder (332) is slidably connected to an insertion rod (333), the outer wall of the adjusting cylinder (332) is fixedly connected to a fixing rod (334), and the outer wall of the insertion rod (333) is fixedly connected to a return spring (335).

5. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 4, characterized in that: The inner wall of the adjusting cylinder (332) is threadedly connected to the outer wall of the adjusting screw (34); the top end of the adjusting cylinder (332) is rotatably connected to the bottom end of the mounting frame (31); the outer wall of the insert rod (333) is slidably connected to the inner wall of the gear ring (331); the inner wall of the insert rod (333) is slidably connected to the outer wall of the fixing rod (334); and one end of the return spring (335) away from the insert rod (333) is fixedly connected to the outer wall of the adjusting cylinder (332).

6. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 1, characterized in that: The grinding mechanism (5) comprises a baffle plate (51), the inner wall of which is rotatably connected to a stationary plate (52), a flow slot (53) is provided in the wall of the baffle plate (51), and the bottom end of the baffle plate (51) is fixedly connected to a drive motor (54) via a frame.

7. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 6, characterized in that: The outer wall of the baffle plate (51) is slidably connected to the inner wall of the processing box (1), and the output end of the drive motor (54) is fixedly connected to the outer wall of the static plate (52).

8. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 1, characterized in that: The blocking mechanism (6) comprises a filter plate (61), the inner walls at the four corners of the filter plate (61) are slidably connected to support rods (62), the outer wall of the filter plate (61) is fixedly connected to a push spring (63), a lower pressure plate (65) is provided at the top of the filter plate (61), the outer wall of the lower pressure plate (65) is rotatably connected to a pull rod (64), a water pump (67) is provided outside the filter plate (61), and the outer wall of the water pump (67) is fixedly connected to a flow pipe (66).

9. The liquid-free pressurizing equipment for lapping precision bearing steel balls according to claim 8, characterized in that: The outer wall of the lower pressure plate (65) is slidably connected to the inner wall of the processing box (1), the end of the pull rod (64) away from the lower pressure plate (65) is rotatably connected to the outer wall of the filter plate (61), the outer wall of the support rod (62) is fixedly connected to the inner wall of the processing box (1), the bottom end of the push spring (63) is fixedly connected to the outer wall of the support rod (62), the bottom end of the circulation tube (66) is fixedly connected to the inner wall of the processing box (1), and the top end of the circulation tube (66) is fixedly connected to a telescopic tube (68).

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