Valve hydraulic driver shell machining device

Abstract

The valve hydraulic driver shell machining device comprises a supporting table, and the upper end of the supporting table is fixedly connected with a sealing cylinder; the limiting mechanism comprises a lifting plate arranged above the supporting table, a first rotating pipe is vertically arranged on the lifting plate in a penetrating mode, the first rotating pipe is rotationally connected with the lifting plate through a bearing, a three-jaw chuck is fixedly connected to the lower end of the first rotating pipe, and a shell body is installed at the clamping position of the three-jaw chuck; and the grinding mechanism comprises a reciprocating lead screw rotationally connected to the upper end of the supporting table, and the reciprocating lead screw is in threaded connection with a lifting block. In the actual using process of the device, the inner side of the driver shell can be polished under large pressure firstly and then polished under small pressure, the final polishing quality is guaranteed, in addition, dust generated by polishing can be removed and collected in a centralized mode, and the surrounding environment is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of valve actuator manufacturing, and more particularly to a valve hydraulic actuator housing processing apparatus. Background Technology

[0002] In the manufacturing of valve hydraulic actuators, the machining quality of the actuator housing is crucial, and the valve hydraulic actuator assembly, such as... Figure 9 As shown, during the processing, surface treatment of each component is required, especially the surface quality of the inner side of the cylindrical housing, which directly affects the performance, sealing and service life of the driver. Traditional polishing methods for the inner side of the cylindrical housing have many shortcomings.

[0003] On the one hand, in terms of polishing pressure control, it is often difficult to achieve precise staged pressure adjustment. Usually, a single pressure is used for polishing. If the initial pressure is too low, the removal efficiency of deep scratches, burrs and other defects that may exist on the inner side of the shell is low, resulting in excessively long polishing time and low production efficiency. If the initial pressure is too high, although it can quickly remove large defects, it is easy to leave new micro scratches on the inner surface of the shell, affecting the final surface quality and making it difficult to meet the high-precision polishing requirements.

[0004] On the other hand, dust disposal during the polishing process is also a thorny issue. Traditional processing equipment lacks an effective dust collection mechanism, and the dust generated during polishing will permeate the surrounding environment, which will not only harm the health of operators, but also cause respiratory diseases if inhaled for a long time, and pollute the air in the production workshop, failing to meet increasingly stringent environmental protection requirements. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a valve hydraulic actuator housing processing device. In actual use, this device can perform high-pressure polishing on the inner side of the actuator housing first, followed by low-pressure polishing, ensuring the final polishing quality. In addition, the dust generated during polishing can be collected and removed in a centralized manner, protecting the surrounding environment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A valve hydraulic actuator housing processing device includes a support platform with a sealing cylinder fixedly connected to its upper end; a limiting mechanism including a lifting plate disposed above the support platform, a first rotating tube vertically penetrating the lifting plate and rotatably connected to the lifting plate via a bearing, a three-jaw chuck fixedly connected to the lower end of the first rotating tube, and a housing body installed at the engagement point of the three-jaw chuck; a grinding mechanism including a reciprocating screw rotatably connected to the upper end of the support platform, a lifting block threadedly connected to the reciprocating screw, a polishing head disposed to the left of the lifting block, a guide rod fixedly connected to the upper end of the support platform, the guide rod penetrating the lifting block and slidably connected to the lifting block; a lifting mechanism for adjusting the height of the lifting plate; and a dust collection mechanism for removing dust generated during polishing.

[0008] Preferably, the lifting mechanism includes a vertical plate fixedly connected to the upper end of the support platform. A sliding groove is provided on the front side of the vertical plate. A first motor is installed at the upper end of the vertical plate. The output shaft of the first motor extends into the sliding groove and is fixedly connected to a threaded rod. The lower end of the threaded rod is rotatably connected to the inner bottom of the sliding groove. A slider is threaded onto the threaded rod.

[0009] Preferably, the slider is slidably connected to the inner wall of the groove, and the front side of the slider is fixedly connected to the rear side of the lifting plate.

[0010] Preferably, a second motor is installed at the lower end of the support platform, and the output shaft of the second motor passes through the support platform and is fixedly connected to the lower end of the reciprocating lead screw.

[0011] Preferably, the lifting block is provided with a sliding cavity, and a piston block that can slide left and right is provided in the sliding cavity. The right side of the piston block is elastically connected to the right inner wall of the sliding cavity by a spring. A rectangular connecting strip is fixedly connected to the piston block. The left end of the rectangular connecting strip passes through the left inner wall of the sliding cavity and is fixedly connected to the right side of the polishing head. The upper end face of the polishing head is inclined.

[0012] Preferably, the dust collection mechanism is symmetrically and fixedly connected to the U-shaped connecting plates on the left and right sides of the lifting plate. Piston cylinders are fixedly connected to the opposite sides of the vertical portions of the two U-shaped connecting plates away from the lifting plate. Piston plates are slidably connected inside the two piston cylinders. Piston rods are fixedly connected to the opposite sides of the two piston plates. Sliding plates are fixedly connected to the opposite ends of the two piston rods. The two sliding plates are fixedly connected by two racks, with the tooth surfaces of the two racks facing each other. The upper end of the first rotating tube extends to the outside, and an incomplete gear is fixedly connected to the outer side of the first rotating tube. The incomplete gear engages with the two racks.

[0013] Preferably, a filter box is fixedly connected to the upper end of the support platform, and the opposite side spaces of the two piston cylinders are connected to a first one-way pipe. The other ends of the two first one-way pipes are connected to a main pipe. The other end of the main pipe is connected to the left side space of the filter box, and the right side space of the filter box is connected to the inner bottom space of the sealing cylinder through a connecting pipe.

[0014] Preferably, the left space of the piston cylinder located on the left side is connected to the outside through a one-way port, the right space of the piston cylinder located on the right side is connected to a second one-way pipe, the bottom of the sliding cavity is connected to a connecting pipe, the other end of the connecting pipe is connected to the other end of the second one-way pipe, the middle part of the connecting pipe is connected to an inclined nozzle, the top of the sliding cavity is provided with a vent hole, and both the connecting pipe and the inclined nozzle are equipped with solenoid valves.

[0015] Preferably, the one-way port, the second one-way pipe, and the two first one-way pipes are all equipped with one-way valves. The one-way valve inside the one-way port flows to the left piston cylinder and discharges to the outside in one direction. The one-way valve inside the second one-way pipe flows to the right piston cylinder and enters the connecting pipe in one direction. The one-way valves inside the two first one-way pipes flow to the main pipe and enter the two piston cylinders in one direction.

[0016] Preferably, a first horizontal plate is fixedly connected to the front side of the sealing cylinder, and a rotating shaft is provided through the first horizontal plate and the support platform. The rotating shaft is rotatably connected to the first horizontal plate and the support platform through two bearings. A second horizontal plate is fixedly connected to the front side of the lifting plate, and a second rotating tube is rotatably connected to the second horizontal plate through bearings. A guide groove is provided on the inner side of the second rotating tube. A guide groove and a guide strip are fixedly connected to one side of the rotating shaft. The second rotating tube and the first rotating tube are connected by a first belt drive component. The rotating shaft is connected to the output shaft of the second motor by a second belt drive component.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows:

[0018] 1. First, high-pressure polishing is used to increase the contact pressure between the polishing head and the inner wall of the outer shell, quickly removing larger surface defects. Then, low-pressure polishing is used to finely refine the surface by relying on the elasticity of the spring, removing minor scratches and unevenness, effectively reducing surface roughness and improving the overall polishing quality.

[0019] 2. By using two first one-way pipes to draw air and create negative pressure in the filter box, the gas and dust in the sealed cylinder are drawn into the filter box, achieving centralized removal and collection of polishing dust and ensuring a clean surrounding environment.

[0020] 3. The output shaft of the second motor drives the rotating shaft to rotate through the second belt drive component. The rotating shaft then drives the first rotating tube to rotate through the first belt drive component, thereby causing the three-jaw chuck and the outer shell to rotate. Combined with the up-and-down movement of the polishing head, this achieves comprehensive polishing of the inner side of the outer shell, improving polishing efficiency and effect.

[0021] 4. During the downward movement of the polishing head, the external controller controls the solenoid valve on the connecting pipe to close and the solenoid valve on the tilting nozzle to open. At this time, when the right piston plate moves to the right, the gas in the right space of the sliding cavity is released through the connecting pipe and the tilting nozzle and blown towards the inner wall of the outer shell to blow away the residual dust.

[0022] 5. Since the radius of the left piston cylinder is larger than that of the right piston cylinder, when gas is ejected from the inclined nozzle and the vent hole, the left piston cylinder is the one that is drawing in gas. Its drawing rate is greater than that of the right piston cylinder. Therefore, the amount of gas inside the sealed cylinder is decreasing, so gas will be replenished from the first rotating tube. By using this method, the airflow from top to bottom at the first rotating tube can effectively prevent dust from spreading.

[0023] In summary, this valve hydraulic actuator housing processing device, through its segmented pressure polishing and effective dust collection design, improves polishing quality, enhances the working environment, and increases practical applicability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a valve hydraulic actuator housing processing device proposed in this invention;

[0025] Figure 2 for Figure 1 A diagram of the structure viewed from below;

[0026] Figure 3 for Figure 1 Top view plan;

[0027] Figure 4 for Figure 3 A schematic diagram showing the connection between the rotating shaft and the second rotating tube;

[0028] Figure 5 for Figure 1 A schematic diagram of the cross-sectional structure;

[0029] Figure 6 for Figure 5 A cross-sectional view of the grinding mechanism;

[0030] Figure 7 for Figure 6 Enlarged view of point A;

[0031] Figure 8 This is a diagram showing the fit of an incomplete gear and two racks, etc.

[0032] Figure 9 This is a schematic diagram of a liquid actuator housing assembly in the prior art.

[0033] In the diagram: 1 Support platform, 2 Vertical plate, 3 Slide groove, 4 First motor, 5 Threaded rod, 6 Slider, 7 Lifting plate, 8 Sealing cylinder, 9 Filter box, 10 Connecting pipe, 11 Outer shell, 12 First horizontal plate, 13 Rotating shaft, 14 Three-jaw chuck, 15 Second motor, 16 Second belt drive component, 17 U-shaped connecting plate, 18 Piston cylinder, 19 Piston rod, 20 One-way port, 21 Main pipe, 22 First one-way pipe, 23 Second one-way pipe, 24 First rotating pipe, 25 Second horizontal plate, 26 Second rotating pipe, 27 Guide bar, 28 Guide groove, 29 Reciprocating screw, 30 Guide rod, 31 Lifting block, 32 Slide cavity, 33 Polishing head, 34 Rectangular connecting bar, 35 Inclined nozzle, 36 Connecting pipe, 37 Piston block, 38 Spring, 39 Vent hole, 40 Incomplete gear, 41 Sliding plate, 42 Rack, 43 Piston plate, 44 First belt drive component. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] Reference Figures 1-8 A valve hydraulic actuator housing processing device includes a support platform 1, with a sealing cylinder 8 fixedly connected to the upper end of the support platform 1. Furthermore, an annular rubber layer is provided on the upper end surface of the sealing cylinder 8, which ensures its sealing performance after contacting the lifting plate 7. This ensures that when the dust collection mechanism is running, gas can only enter the sealing cylinder 8 from the first rotating pipe 24. The unidirectional flow of gas can prevent dust from leaking from the first rotating pipe 24.

[0036] As one embodiment of the present invention, it also includes a limiting mechanism, which includes a lifting plate 7 disposed above the support platform 1. A first rotating tube 24 is vertically disposed on the lifting plate 7. The first rotating tube 24 is rotatably connected to the lifting plate 7 through a bearing. A three-jaw chuck 14 is fixedly connected to the lower end of the first rotating tube 24. The three-jaw chuck 14 is the prior art. A through-hole is opened in the middle of the three-jaw chuck 14, which corresponds to the first rotating tube 24. A housing body 11 is installed at the snap-fit ​​part of the three-jaw chuck 14.

[0037] As one embodiment of the present invention, a polishing mechanism is also included. The polishing mechanism includes a reciprocating screw 29 rotatably connected to the upper end of the support platform 1. A lifting block 31 is threadedly connected to the reciprocating screw 29. A polishing head 33 is provided on the left side of the lifting block 31. A polishing layer (i.e., a friction layer) is provided on the side of the polishing head 33 away from the lifting block 31 to polish the inner side of the sealing cylinder 8. A guide rod 30 is fixedly connected to the upper end of the support platform 1. The guide rod 30 passes through the lifting block 31 and is slidably connected to the lifting block 31. A second motor 15 is installed at the lower end of the support platform 1. The output shaft of the second motor 15 passes through the support platform 1 and is fixedly connected to the lower end of the reciprocating screw 29. By starting the second motor 15, the reciprocating screw 29 can be rotated, so that the lifting block 31 moves up first and then down.

[0038] As one embodiment of the present invention, it also includes a lifting mechanism for adjusting the height of the lifting plate 7. The lifting mechanism includes a vertical plate 2 fixedly connected to the upper end of the support platform 1. A slide groove 3 is provided on the front side of the vertical plate 2. A first motor 4 is installed at the upper end of the vertical plate 2. The output shaft of the first motor 4 extends into the slide groove 3 and is fixedly connected to a threaded rod 5. The lower end of the threaded rod 5 is rotatably connected to the inner bottom of the slide groove 3. A slider 6 is threadedly connected to the threaded rod 5. The slider 6 is slidably connected to the inner wall of the slide groove 3. The front side of the slider 6 is fixedly connected to the rear side of the lifting plate 7.

[0039] In one embodiment of the present invention, a sliding cavity 32 is provided inside the lifting block 31, and a piston block 37 that can slide left and right is provided inside the sliding cavity 32. The right side of the piston block 37 is elastically connected to the right inner wall of the sliding cavity 32 through a spring 38. A rectangular connecting strip 34 is fixedly connected to the piston block 37. The left end of the rectangular connecting strip 34 passes through the left inner wall of the sliding cavity 32 and is fixedly connected to the right side of the polishing head 33. The upper end face of the polishing head 33 is inclined. When the cylindrical outer shell body 11 moves down, its lower end face abuts against the inclined surface of the polishing head 33, causing the entire polishing head 33 to move to the right, and driving the rectangular connecting strip 34 and the piston block 37 to move to the right, so that the spring 38 is in a compressed state.

[0040] In one embodiment of the present invention, a dust collection mechanism is also included. This mechanism removes dust generated during polishing. The dust collection mechanism is symmetrically and fixedly connected to U-shaped connecting plates 17 on the left and right sides of the lifting plate 7. Piston cylinders 18 are fixedly connected to opposite sides of the vertical portions of the two U-shaped connecting plates 17 away from the lifting plate 7. The radius of the left piston cylinder 18 is larger than that of the right piston cylinder 18. Piston plates 43 are slidably connected inside both piston cylinders 18. Piston rods 19 are fixedly connected to opposite sides of both piston plates 43. Sliding plates 41 are fixedly connected to opposite ends of the two piston rods 19. The two sliding plates 41 are fixedly connected by two racks 42. The two racks 42 are fixedly connected, with their tooth surfaces facing each other. The upper end of the first rotating tube 24 extends to the outside. An incomplete gear 40 is fixedly connected to the outside of the first rotating tube 24. The incomplete gear 40 cooperates with the two racks 42. A filter box 9 is fixedly connected to the upper end of the support platform 1. A filter element for filtering is installed inside the filter box 9. The opposite side spaces of the two piston cylinders 18 are connected to the first one-way tube 22. The other end of the two first one-way tubes 22 is connected to the main pipe 21. The other end of the main pipe 21 is connected to the left side space of the filter box 9. The right side space of the filter box 9 is connected to the inner bottom space of the sealing cylinder 8 through the connecting pipe 10.

[0041] In one embodiment of the present invention, the left space of the piston cylinder 18 located on the left side is connected to the outside through a one-way port 20, and the right space of the piston cylinder 18 located on the right side is connected to a second one-way pipe 23. The bottom of the inner cavity 32 is connected to a connecting pipe 36, and the other end of the connecting pipe 36 is connected to the other end of the second one-way pipe 23. The middle part of the connecting pipe 36 is connected to an inclined nozzle 35. A vent hole 39 is provided at the top of the inner cavity 32. Solenoid valves are installed inside both the connecting pipe 36 and the inclined nozzle 35. The solenoid valve of the connecting pipe 36 is installed near its... Near one end of the lifting block 31, further, during the upward movement of the lifting block 31 caused by the rotation of the reciprocating screw 29, the external controller controls the solenoid valve on the connecting pipe 36 to open, while the solenoid valve on the inclined nozzle 35 is closed. During the downward movement of the lifting block 31 caused by the rotation of the reciprocating screw 29, the external controller controls the solenoid valve on the connecting pipe 36 to close, while the solenoid valve on the inclined nozzle 35 is opened. Using this method, during the upward movement, due to the small diameter of the vent hole 39, when the piston plate 43 on the right side moves to the left, a large amount of gas is forced into the sliding cavity 32. Due to the gas release... The gas releases slowly, causing it to accumulate in the space on the right side of the slide cavity 32, increasing the gas pressure there. This gas pressure allows the piston block 37 to exert greater contact pressure on the inner wall of the outer casing 11, achieving a greater pressure grinding effect. (Although no gas is injected when the piston plate 43 moves to the right, the release of gas in the space on the right side of the slide cavity 32 is a gradual process, so there is still significant gas pressure in that space during this period, greater than the pressure provided by the spring force of the spring 38 alone.) During the downward movement, the gas will... Released from the inclined nozzle 35, it blows towards the inner wall of the outer shell 11 to blow away residual dust. Combined with the dust collection mechanism, it can ensure the cleanliness of the inner wall after polishing. One-way valves are installed inside the one-way port 20, the second one-way pipe 23 and the two first one-way pipes 22. The one-way valve inside the one-way port 20 flows to the left piston cylinder 18 and discharges to the outside in one direction. The one-way valve inside the second one-way pipe 23 flows to the right piston cylinder 18 and enters the connecting pipe 36 in one direction. The one-way valve inside the two first one-way pipes 22 flows to the main pipe 21 and enters the two piston cylinders 18 in one direction.

[0042] In one embodiment of the present invention, a first horizontal plate 12 is fixedly connected to the front side of the sealing cylinder 8. A rotating shaft 13 is provided through the first horizontal plate 12 and the support platform 1. The rotating shaft 13 is rotatably connected to the first horizontal plate 12 and the support platform 1 through two bearings. A second horizontal plate 25 is fixedly connected to the front side of the lifting plate 7. A second rotating tube 26 is rotatably connected to the second horizontal plate 25 through bearings. A guide groove 28 is provided on the inner side of the second rotating tube 26. A guide groove 28 is fixedly connected to one side of the rotating shaft 13 to cooperate with a guide strip 27. The second rotating tube 26 and the first rotating tube 24 are connected by a first belt drive 44. The rotating shaft 13 and the output shaft of the second motor 15 are connected by a second belt drive 16. The first belt drive 44 consists of two first pulleys and a first transmission belt for driving them. The two first pulleys are respectively installed on the rotating shaft 13 and the first rotating tube 24. The second belt drive 16 consists of two second pulleys and a second transmission belt for driving them. The two second pulleys are respectively installed on the second rotating tube 26 and the output shaft of the second motor 15.

[0043] In this invention, the cylindrical housing body 11 of the valve hydraulic actuator is installed at the snap-fit ​​position of the three-jaw chuck 14. At this time, all components are in the initial state, the lifting plate 7 is at a suitable height position, and the polishing head 33 is in the initial position.

[0044] Start the first motor 4. The output shaft of the first motor 4 drives the threaded rod 5 to rotate. Since the slider 6 is threadedly connected to the threaded rod 5 and slidably connected to the inner wall of the slide groove 3, the slider 6 moves down along the slide groove 3, which drives the lifting plate 7 to descend, thereby causing the three-jaw chuck 14 and the outer shell 11 to move down. During the downward movement of the outer shell 11, its lower end face abuts against the inclined surface of the polishing head 33, causing the polishing head 33 to move to the right, which drives the rectangular connecting strip 34 and the piston block 37 to move to the right in the slide cavity 32. The spring 38 is compressed until the lifting plate 7 contacts the rubber layer. At this time, the lowest part of the inner side of the outer shell 11 just contacts the friction layer of the polishing head 33.

[0045] Start the second motor 15. The output shaft of the second motor 15 drives the rotating shaft 13 to rotate through the second belt drive 16. The rotating shaft 13 drives the second rotating tube 26 to rotate, which in turn drives the first rotating tube 24 to rotate through the first belt drive 44. The first rotating tube 24 drives the three-jaw chuck 14 and the outer shell 11 to rotate.

[0046] The output shaft of the second motor 15 drives the reciprocating screw 29 to rotate. Since the lifting block 31 is threadedly connected to the reciprocating screw 29 and slidably connected to the guide rod 30, the lifting block 31 moves upward, driving the polishing head 33 to move upward and make relative movement to the inner side of the outer shell 11 to achieve polishing. At this time, the rotation of the outer shell 11 makes the polishing more comprehensive.

[0047] During the upward movement, the external controller controls the solenoid valve on the connecting pipe 36 to open and the solenoid valve on the inclined nozzle 35 to close. The first rotating pipe 24 rotates, driving the incomplete gear 40 to rotate. The incomplete gear 40 engages with the two racks 42, causing the sliding plate 41 to move back and forth, driving the corresponding piston rod 19 and the corresponding piston plate 43 to slide back and forth within the piston cylinder 18. When the left piston plate 43 moves to the right, gas is discharged through the one-way port 20. When the left piston plate 43 moves to the right, gas is drawn in through the first one-way pipe 22. When the right piston plate 43 moves to the left, gas is drawn in through the first one-way pipe 22. When gas is drawn into the pipe 22 and the right piston plate 43 moves to the right, the gas will be forced out through the second one-way pipe 23. In this way, when the gas is discharged from the second one-way pipe 23, the gas is forced into the right space of the sliding cavity 32 through the connecting pipe 36. Since the diameter of the vent hole 39 is small, the gas is released slowly and the gas pressure is increased in the right space of the sliding cavity 32. The gas pressure makes the polishing head 33 contact the inner wall of the outer shell 11 with greater pressure, thus achieving greater pressure grinding. Greater pressure grinding can quickly remove deep scratches, oxide layers, burrs and other large defects on the surface of the workpiece.

[0048] After the upward movement process with high pressure grinding, the reciprocating screw 29 continues to rotate, causing the lifting block 31 to move downward, which in turn drives the polishing head 33 to move downward to continue polishing the inner side of the outer shell 11. At this time, the external controller controls the solenoid valve on the connecting pipe 36 to close and the solenoid valve on the tilting nozzle 35 to open. When the right piston plate 43 moves to the right, the gas in the right space of the sliding cavity 32 is released through the connecting pipe 36 and the tilting nozzle 35 and blown towards the inner wall of the outer shell 11 to blow away the residual dust. This removes the dust remaining on the inner wall of the outer shell 11, ensuring cleanliness in the subsequent process. During the downward movement, the polishing head 33 has a small contact pressure with the inner wall of the outer shell 11 due to the elasticity of the spring 38, achieving low-pressure grinding. When polishing with low contact force, the cutting action of the polishing particles on the workpiece surface is more subtle and uniform, which can gradually remove the small scratches and unevenness left after high-contact force polishing, making the surface roughness lower and the overall grinding quality better.

[0049] Furthermore, during the above process, as gas is sequentially drawn in through the two first one-way pipes 22, a continuous negative pressure is generated in the filter box 9. Through the connecting pipe 10, the gas inside the sealed cylinder 8 can be drawn into the filter box 9, achieving the operation of drawing dust generated during polishing into the filter box 9 along with the gas. Simultaneously, as the polishing head 33 moves downward, the dust raised by the inclined nozzle 35 is also carried away, ensuring a cleaning effect. It should be noted that the amount of gas expelled from the inclined nozzle 35 and the vent 39 is relatively constant over the entire process. The actual amount of gas drawn in by the first one-way pipe 22 is less than half. Since the radius of the left piston cylinder 18 is larger than that of the right piston cylinder 18, when gas is ejected from the inclined nozzle 35 and the vent hole 39, the left piston cylinder 18 is the one drawing in gas. Its drawing rate is greater than that of the right piston cylinder 18. Therefore, the amount of gas inside the sealing cylinder 8 is decreasing. So gas will be replenished from the first rotating pipe 24. By using this method, the airflow from top to bottom at the first rotating pipe 24 can effectively prevent the dust from spreading.

[0050] After polishing is complete, start the first motor 4 to rotate in the opposite direction, and then remove the outer shell 11.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A valve hydraulic actuator housing machining device, characterized in that, include: A support platform (1) is provided, and a sealing cylinder (8) is fixedly connected to the upper end of the support platform (1). The limiting mechanism includes a lifting plate (7) disposed above the support platform (1), a first rotating tube (24) is vertically disposed on the lifting plate (7), the first rotating tube (24) is rotatably connected to the lifting plate (7) through a bearing, a three-jaw chuck (14) is fixedly connected to the lower end of the first rotating tube (24), and a housing body (11) is installed at the snap-fit ​​of the three-jaw chuck (14); The polishing mechanism includes a reciprocating screw (29) rotatably connected to the upper end of the support platform (1), a lifting block (31) threadedly connected to the reciprocating screw (29), a polishing head (33) provided on the left side of the lifting block (31), and a guide rod (30) fixedly connected to the upper end of the support platform (1). The guide rod (30) passes through the lifting block (31) and is slidably connected to the lifting block (31). A lifting mechanism is used to adjust the height of the lifting plate (7); A dust collection mechanism is used to remove dust generated during polishing.

2. The valve hydraulic actuator housing processing device according to claim 1, characterized in that, The lifting mechanism includes a vertical plate (2) fixedly connected to the upper end of the support platform (1). A sliding groove (3) is provided on the front side of the vertical plate (2). A first motor (4) is installed at the upper end of the vertical plate (2). The output shaft of the first motor (4) extends into the sliding groove (3) and is fixedly connected to a threaded rod (5). The lower end of the threaded rod (5) is rotatably connected to the inner bottom of the sliding groove (3). A slider (6) is threadedly connected to the threaded rod (5).

3. The valve hydraulic actuator housing processing device according to claim 2, characterized in that, The slider (6) is slidably connected to the inner wall of the groove (3), and the front side of the slider (6) is fixedly connected to the rear side of the lifting plate (7).

4. The valve hydraulic actuator housing processing device according to claim 1, characterized in that, A second motor (15) is installed at the lower end of the support platform (1). The output shaft of the second motor (15) passes through the support platform (1) and is fixedly connected to the lower end of the reciprocating lead screw (29).

5. The valve hydraulic actuator housing processing device according to claim 4, characterized in that, The lifting block (31) is provided with a sliding cavity (32), and a piston block (37) that can slide left and right is provided in the sliding cavity (32). The right side of the piston block (37) is elastically connected to the right inner wall of the sliding cavity (32) by a spring (38). A rectangular connecting strip (34) is fixedly connected to the piston block (37). The left end of the rectangular connecting strip (34) penetrates the left inner wall of the sliding cavity (32) and is fixedly connected to the right side of the polishing head (33). The upper end face of the polishing head (33) is inclined.

6. The valve hydraulic actuator housing processing device according to claim 5, characterized in that, The dust collection mechanism is symmetrically and fixedly connected to the U-shaped connecting plates (17) on the left and right sides of the lifting plate (7). The vertical parts of the two U-shaped connecting plates (17) away from the lifting plate (7) are fixedly connected to the opposite sides of the piston cylinders (18). The piston plates (43) are slidably connected inside the two piston cylinders (18). The piston rods (19) are fixedly connected to the opposite sides of the two piston plates (43). The opposite ends of the two piston rods (19) are fixedly connected to the sliding plates (41). The two sliding plates (41) are fixedly connected by two racks (42). The tooth surfaces of the two racks (42) are arranged opposite to each other. The upper end of the first rotating tube (24) extends to the outside. The outer side of the first rotating tube (24) is fixedly connected to an incomplete gear (40). The incomplete gear (40) cooperates with the two racks (42).

7. A valve hydraulic actuator housing processing device according to claim 6, characterized in that, The upper end of the support platform (1) is fixedly connected to a filter box (9). The opposite side spaces of the two piston cylinders (18) are connected to a first one-way pipe (22). The other ends of the two first one-way pipes (22) are connected to a main pipe (21). The other end of the main pipe (21) is connected to the left side space of the filter box (9). The right side space of the filter box (9) is connected to the inner bottom space of the sealing cylinder (8) through a connecting pipe (10).

8. A valve hydraulic actuator housing processing device according to claim 7, characterized in that, The left space of the piston cylinder (18) located on the left side is connected to the outside through a one-way port (20). The right space of the piston cylinder (18) located on the right side is connected to a second one-way pipe (23). The bottom of the sliding cavity (32) is connected to a connecting pipe (36). The other end of the connecting pipe (36) is connected to the other end of the second one-way pipe (23). The middle part of the connecting pipe (36) is connected to an inclined nozzle (35). A vent hole (39) is provided at the top of the sliding cavity (32). Solenoid valves are installed inside the connecting pipe (36) and the inclined nozzle (35).

9. A valve hydraulic actuator housing processing device according to claim 8, characterized in that, One-way valves are installed inside the one-way port (20), the second one-way pipe (23), and the two first one-way pipes (22). The one-way valve inside the one-way port (20) flows to the left piston cylinder (18) and discharges to the outside in one direction. The one-way valve inside the second one-way pipe (23) flows to the right piston cylinder (18) and enters the connecting pipe (36) in one direction. The one-way valves inside the two first one-way pipes (22) flow to the main pipe (21) and enter the two piston cylinders (18) in one direction.

10. A valve hydraulic actuator housing processing device according to claim 4, characterized in that, A first horizontal plate (12) is fixedly connected to the front side of the sealing cylinder (8). A rotating shaft (13) is provided through the first horizontal plate (12) and the support platform (1). The rotating shaft (13) is rotatably connected to the first horizontal plate (12) and the support platform (1) through two bearings. A second horizontal plate (25) is fixedly connected to the front side of the lifting plate (7). A second rotating tube (26) is rotatably connected to the second horizontal plate (25) through a bearing. A guide groove (28) is provided on the inner side of the second rotating tube (26). A guide groove (28) is fixedly connected to one side of the rotating shaft (13) to cooperate with the guide strip (27). The second rotating tube (26) and the first rotating tube (24) are connected by a first belt drive (44). The rotating shaft (13) and the output shaft of the second motor (15) are connected by a second belt drive (16).

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