Vacuum adsorption machining clamp and submersible pump head machining equipment and method

Abstract

The invention belongs to submersible pump machining equipment, and particularly relates to a vacuum adsorption machining clamp and submersible pump head machining equipment and method. In order to solve the problems that in the prior art, due to the fact that small chippings are accumulated in a clamping groove in the machining process, the workpiece inclines during clamping, the following scheme is provided, the device comprises a fixed disc, the top of the fixed disc is rotationally connected with a rotating base disc, and a clamping groove for containing the workpiece is formed in the top of the rotating base disc; in order to tightly adsorb the workpiece in the clamping groove, a vacuum adsorption structure is arranged in the rotating base plate, when air in the annular cavity is exhausted to conduct vacuum adsorption on the workpiece, the pressing plate can be driven to move downwards so that the pressing block can clamp the workpiece in the vertical direction, in addition, the baffles can be controlled to be close to each other to form a circular ring, and therefore the clamping efficiency is improved. And a gap between the workpiece and the clamping groove is shielded.

Description

Technical Field

[0001] The invention relates to submersible pump processing equipment, and in particular to a vacuum adsorption processing fixture and submersible pump head processing equipment and method. Background Art

[0002] A submersible pump, also known as a downhole pump, is a mechanical device installed inside an oil well, primarily used to pump crude oil from the bottom of the well to the surface. It typically operates at depths of hundreds or even thousands of meters underground and can withstand high temperatures, high pressures, and corrosive environments. Submersible pumps primarily pump liquids through centrifugal force or propulsion. The motor drives the impeller, which generates kinetic energy and is then pumped to the surface.

[0003] The processing of submersible pumps includes the processing of their pump heads, which are generally cylindrical or multi-stage series structures. Therefore, when processing the pump heads, it is often necessary to fine-cut, polish and grind the end faces of the cylinders for the subsequent tight connection of two adjacent cylinders.

[0004] In the prior art, the following disadvantages still exist in the process of pump head alignment: 1. When processing cylindrical parts, it is often necessary to use a clamp to process the cylinder. However, in the existing technology, when the clamp is clamping the cylinder, it is easy to clamp its outer wall, which not only causes damage to the outer wall, but also easily causes deformation, affecting the processing accuracy; 2. During processing, the generated debris is scattered. These debris are small in size and easily accumulate on the inner wall of the clamping groove. Over a long period of time, it causes the workpiece to tilt during clamping, affecting the accuracy of workpiece processing.

[0005] In response to the above problems, the present invention document proposes a vacuum adsorption processing fixture and a submersible pump head processing device and method. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the existing outer wall clamping method, which not only causes clamping damage to the outer wall of the workpiece, but also easily causes deformation of the workpiece, affecting the progress of subsequent processing, and small debris accumulates in the clamping groove during processing, causing the workpiece to tilt when clamped. A vacuum adsorption processing fixture and submersible pump head processing equipment and method are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A vacuum adsorption processing fixture is used to clamp and fix the end face of a workpiece when milling the end face of the workpiece. It includes a fixed plate, the top of which is rotatably connected to a rotating base plate, and the top of the rotating base plate is provided with a clamping groove for placing the workpiece; In order to be able to tightly adsorb the workpiece in the clamping groove, a vacuum adsorption structure is provided in the rotating chassis, and the vacuum adsorption structure includes a plurality of first through holes and a second through hole provided on the inner wall of the bottom of the clamping groove; Among them, a plurality of positioning pins are fixed on the inner wall of the bottom of the clamping groove, and the plurality of positioning pins cooperate with the flange holes in the workpiece to position the workpiece; The vacuum adsorption structure also includes multiple pressing structures for applying vertical force to the workpiece during the vacuum adsorption process to further fix the workpiece. The pressing structure includes a connecting tube fixed at the bottom end of the positioning pin and two pressing blocks sliding through the positioning pin.

[0008] In a possible design, the vacuum adsorption structure also includes an annular cavity arranged in the rotating chassis, the bottom ends of the second through hole and the first through hole both extend into the annular cavity, and a piston plate is sealingly and slidingly connected in the annular cavity. The downward movement of the piston plate can form a negative pressure above it, and thus the workpiece can be fixed through the cooperation of the first through hole and the second through hole. A suction pipe for extracting the air below the piston plate in the annular cavity is provided on one side of the rotating chassis, and the suction pipe is connected to an external negative pressure pump. In order to avoid metal debris from accumulating in the gap between the workpiece and the clamping groove during the later processing of the workpiece, a plurality of shielding structures are provided in the rotating chassis, and the shielding structure includes a baffle; the external negative pressure pump is docked with the suction pipe to extract the air in the annular cavity, so that the piston plate moves downward, and negative pressure is formed above the piston plate, and then the workpiece is preliminarily fixed under the action of the first through hole and the second through hole.

[0009] In a possible design, the shielding structure includes a sliding groove arranged in the rotating chassis, the sliding groove and the annular cavity are connected by a connecting groove, the connecting groove is located below the piston plate, a piston rod is sealingly and slidingly connected in the connecting groove, a fixed rod is fixed in the sliding groove, a sliding plate is sealingly and slidingly connected in the sliding groove, and the sliding plate is sealingly and slidingly sleeved on the outer wall of the fixed rod, the end of the piston rod away from the annular cavity is fixedly connected to the sliding plate, and when the air in the annular cavity is extracted, the sliding plate can be driven to move toward the middle by the piston rod, and a second spring sleeved on the outer wall of the fixed rod is fixed on the side of the sliding plate close to the piston rod, and one end of the second spring is sleeved on the outer wall of the fixed rod, One side of the inner wall is fixedly connected to drive the baffle to automatically reset. The baffle slides on the top of the rotating chassis to cover the gap between the workpiece and the clamping groove. A U-shaped rod is fixed on one side of the baffle, and one end of the U-shaped rod slides and extends into the sliding groove and is fixedly connected to the sliding plate. The sliding plate drives the baffle through the U-shaped rod to complete the covering of the gap between the workpiece and the clamping groove; when the air in the annular cavity is extracted, the piston rod can slide toward the middle in the connecting groove, and the piston rod drives the sliding plate and the baffle to move synchronously, so that multiple baffles move toward the middle, and multiple baffles converge into a circular ring to cover the gap between the workpiece and the clamping groove, so as to prevent metal debris generated in the later processing process from falling into the gap and making it inconvenient to clean.

[0010] In a possible design, the pressing structure also includes a cavity arranged in the positioning pin, the bottom end of the connecting tube is fixedly extended into the annular cavity, the cavity is connected to the annular cavity through the connecting tube, a piston block is sealingly and slidingly connected in the cavity, a first spring is fixed between the bottom end of the piston block and the bottom inner wall of the cavity, a connecting rod is fixed on the top of the piston block, a pressure plate is fixed on the top of the connecting rod, the pressure plate slides in the cavity, sliding holes connected to the cavity are provided on both sides of the positioning pin, the two pressure blocks slide on the bottom of the pressure plate, the two pressure blocks slide through the corresponding sliding holes respectively, and the sliding The inner walls on both sides of the movable hole that are away from each other are provided with inclined grooves, and pin shafts are sliding in the two inclined grooves. The sides of the two pin shafts that are close to each other are fixedly connected to the two sides of the pressure block. The cooperation of the pin shaft and the inclined groove can extend the pressure block outward when the pressure plate drives the pressure block to move downward, so as to clamp the workpiece in the vertical direction; when negative pressure is formed above the annular cavity, the piston block also moves downward under the action of negative pressure and squeezes the first spring, and the piston block drives the pressure plate to move downward, and the pressure plate drives the pressure block to move downward, and with the cooperation of the inclined groove and the pin shaft, the pressure block extends to the outside, so that the workpiece can be clamped in the vertical direction by the pressure block, further increasing the stability of the workpiece.

[0011] In one possible design, a rubber pad is fixed to the bottom inner wall of the clamping groove, and a plurality of holes are provided in the rubber pad. The plurality of holes respectively cooperate with the corresponding first through holes and second through holes to increase the sealing between the workpiece and the bottom inner wall of the clamping groove, and the top end of the positioning pin is fixed through the rubber pad.

[0012] In one possible design, the positioning pins and the plurality of second through holes are staggered to ensure that the first through holes and the second through holes can stably adsorb the flange holes. A circular hole is provided in the rotating chassis to facilitate the discharge of metal debris during the later processing of the workpiece. The plurality of baffles gather to form a circular ring to block the gap between the workpiece and the clamping groove.

[0013] In one possible design, a fixing ring is fixed to the bottom of the rotating chassis, and the bottom end of the fixing ring extends into the fixed disk. The outer wall of the fixing ring is provided with a bevel gear ring through a screw fixing sleeve, and the inner wall of the fixed disk is provided with an annular groove for making way for the bevel gear ring. A first motor is fixed in the fixed disk, and a bevel gear is fixed on the output shaft of the first motor. The bevel gear is meshed with the bevel gear ring to drive the rotating chassis and the workpiece to rotate, thereby facilitating the later processing of the workpiece.

[0014] A submersible pump head processing device includes the above-mentioned vacuum adsorption processing fixture, and further includes a base plate, the fixed plate is fixed to the top of the base plate by bolts, the top of the base plate is welded to an L-shaped plate, a rectangular groove is provided in the L-shaped plate, a threaded rod is rotatably connected in the rectangular groove, a movable seat threadedly connected to the threaded rod is slidably connected in the rectangular groove, and a processing structure for processing the end of the workpiece is provided in the movable seat; The processing structure includes a cylinder fixed to the top of the movable seat by bolts, the output shaft of the cylinder passes through the movable seat and is fixed with a mounting shell, a second motor is fixed in the mounting shell, and the output shaft of the second motor is fixed with a tool clamp through a coupling, and the tool clamp is used to clamp the processing tool; the threaded rod is driven by the motor to rotate, and the threaded rod drives the mounting shell and the tool clamp to move above the workpiece through the movable seat, and when moving, the cylinder pushes the tool clamp and the milling cutter clamped in the tool clamp to move downward to determine the milling depth, and drives the milling cutter to rotate by the second motor to perform milling operations, after which the first motor drives the rotating chassis and the workpiece to rotate through the cooperation of the bevel gear and the bevel gear ring, so that the milling cutter can perform milling operations at the end of the workpiece; in addition, the grinding wheel can be replaced to complete the grinding operation at the end of the workpiece.

[0015] In one possible design, a rotating ring is fixed to the top of the fixed disk by bolts, and the rotating ring sealing rotating sleeve is arranged on the outer wall of the rotating chassis, and a plurality of L-shaped holes are provided on the bottom inner wall of the annular cavity. A plurality of connecting holes are provided in the rotating ring, which cooperate with the L-shaped holes to extract the gas in the annular cavity, and one end of the suction pipe is fixedly connected to the rotating ring; an external negative pressure pump is docked with the suction pipe, and the air in the annular cavity is extracted through the cooperation of the suction pipe and the rotating ring, and when the workpiece is processed later, the rotating chassis rotates on the top of the fixed disk, and the sealing between the rotating chassis and the rotating ring can ensure that the top of the piston plate is continuously in a negative pressure state.

[0016] In this application, the method for using the submersible pump head processing equipment includes the following steps: S1. Place the workpiece in the clamping slot. Position the locating pin in conjunction with the flange hole, so that the first and second through holes are offset from the flange hole, allowing the workpiece to be subsequently adsorbed into the clamping slot through the two holes. Subsequently, connect an external negative pressure pump to the suction pipe to extract air from the annular cavity, causing the piston plate to move downward, creating negative pressure above it, and preliminarily securing the workpiece through the first and second through holes. S2. Under the negative pressure above the annular cavity, the piston moves downward and squeezes the first spring, driving the pressure plate and the pressure block to move downward; with the cooperation of the inclined groove and the pin shaft, the pressure block extends outward to form a vertical clamp on the workpiece, enhancing its stability; S3. When the annular cavity is evacuated, the piston rod slides toward the middle in the connecting groove, driving the sliding plate and the baffle to move synchronously, so that the baffle blocks the gap between the workpiece and the clamping groove, preventing metal debris from falling into the gap during processing and making it difficult to clean; S4. During processing, the motor drives the threaded rod to rotate, and drives the mounting shell and tool holder to move above the workpiece through the movable seat; the cylinder pushes the tool holder and milling cutter downward to determine the milling depth, and the second motor drives the milling cutter to rotate for milling; then, the first motor drives the rotating chassis and workpiece to rotate through the bevel gear and bevel gear ring, and the milling cutter mills at the end of the workpiece; the grinding wheel can also be replaced to complete the grinding of the workpiece end.

[0017] Beneficial effect: In the present invention, a piston block is sealingly and slidingly connected in the cavity, a pressure plate is fixed to the top of the piston block through a connecting rod, and the two pressure blocks slide on the bottom of the pressure plate. The inner walls on both sides of the sliding hole that are away from each other are provided with inclined grooves, and pins that slide with the inclined grooves are fixed on both sides of the pressure block; when negative pressure is formed above the annular cavity, the piston block drives the pressure plate to move downward, and the pressure plate drives the pressure block to move downward, and with the cooperation of the inclined grooves and the pins, the pressure block extends to the outside, so that the pressure block can clamp the workpiece in a vertical direction, further increasing the stability of the workpiece; In the present invention, a piston rod is sealingly and slidably connected in the communicating groove, a sliding plate is sealingly and slidably connected in the sliding groove, the piston rod and the sliding plate are fixedly connected, a plurality of baffles are slidingly connected to the top of the rotating chassis, and the baffles and the sliding plate are fixedly connected via a U-shaped rod; when the air in the annular cavity is extracted, the piston rod can slide toward the middle in the communicating groove, and the piston rod drives the sliding plate and the baffle to move synchronously, so that the plurality of baffles move toward the middle, thereby blocking the gap between the workpiece and the clamping groove, and preventing metal debris generated in the later processing process from falling into the gap and making it inconvenient to clean; In the present invention, a plurality of positioning pins are fixed to the bottom inner wall of the clamping groove, and the positioning pins cooperate with the flange holes to position the workpiece. The positioning pins are staggered with the plurality of second through holes to ensure that the first through holes and the second through holes can stably adsorb the flange holes.

[0018] In the present invention, when the air in the annular cavity is discharged to vacuum-adsorb the workpiece, the pressure block can be clamped on the workpiece in the vertical direction by driving the pressure plate downward. In addition, the baffles can be controlled to approach each other to form a circular ring to block the gap between the workpiece and the clamping groove, thereby avoiding the accumulation of debris dropped during the processing process, which may cause the workpiece to move unsteadily during clamping in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a three-dimensional exploded structure of a vacuum adsorption processing fixture provided by the present invention; Figure 2 This is a schematic cross-sectional view of a vacuum adsorption processing fixture provided by the present invention; Figure 3 This is a schematic diagram of a three-dimensional exploded structure of a rotating chassis and a rubber pad of a vacuum adsorption processing fixture provided by the present invention; Figure 4 This is a schematic diagram of a three-dimensional exploded structure of a fixed plate, a rotating base plate and an umbrella gear ring of a vacuum adsorption processing fixture provided by the present invention; Figure 5 This is a schematic diagram of a three-dimensional cross-sectional structure of an L-shaped hole of a vacuum adsorption processing fixture provided by the present invention; Figure 6 This is a schematic diagram of a three-dimensional exploded structure of a pressing plate and a pressing block of a vacuum adsorption processing fixture provided by the present invention; Figure 7 This is a schematic diagram of the three-dimensional exploded structure of the baffle, piston rod and sliding plate of the vacuum adsorption processing fixture provided by the present invention.

[0020] Figure 8 This is a schematic diagram of the three-dimensional structure of the submersible pump head processing equipment provided by the present invention; Figure 9This is a schematic diagram of the three-dimensional exploded structure of the L-shaped plate and movable seat of the submersible pump head processing equipment provided by the present invention; Figure 10 This is a schematic cross-sectional structural diagram of the fixed plate, rotating base plate and rotating ring of the submersible pump head processing equipment provided by the present invention.

[0021] Figure: 1, fixed plate; 2, rotating chassis; 3, workpiece; 4, flange hole; 5, clamping groove; 6, rubber pad; 7, positioning pin; 8, annular cavity; 9, piston plate; 10, first through hole; 11, second through hole; 12, suction pipe; 13, circular hole; 14, fixed ring; 15, annular groove; 16, bevel gear ring; 17, first motor; 18, bevel gear; 19, L-shaped hole; 20, connecting pipe; 21, piston block; 22, connecting rod; 23, pressure plate; 24, sliding Movable hole; 25. Bevel groove; 26. Pressure block; 27. First spring; 28. Cavity; 29. ​​Sliding groove; 30. Connecting groove; 31. Fixed rod; 32. Sliding plate; 33. Second spring; 34. Piston rod; 35. U-shaped rod; 36. Baffle; 37. Bottom plate; 38. L-shaped plate; 39. Rectangular groove; 40. Moving seat; 41. Threaded rod; 42. Cylinder; 43. Mounting shell; 44. Second motor; 45. Tool holder; 46. Pin; 47. Rotating ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1: Reference Figures 1-4 , fixture, relates to submersible pump processing equipment, which is used to clamp and fix the workpiece when milling the end face of the workpiece. The vacuum adsorption processing fixture includes a fixed plate 1, the top of the fixed plate 1 is rotatably connected to a rotating chassis 2 through a bearing, and the top of the rotating chassis 2 is provided with a clamping groove 5 for placing the workpiece 3.

[0024] refer to Figure 2-Figure 4 In order to be able to tightly adsorb the workpiece 3 in the clamping groove 5, a vacuum adsorption structure is provided in the rotating chassis 2. The vacuum adsorption structure includes a plurality of first through holes 10 and second through holes 11 arranged on the inner wall of the bottom of the clamping groove 5. The vacuum adsorption structure also includes an annular cavity 8 arranged in the rotating chassis 2. The bottom ends of the second through hole 11 and the first through hole 10 extend into the annular cavity 8. The annular cavity 8 is sealed and slidably connected with a piston plate 9. The downward movement of the piston plate 9 can form a negative pressure above it, and then the workpiece 3 can be fixed by the cooperation of the first through hole 10 and the second through hole 11. An air intake pipe 12 for extracting the air below the piston plate 9 in the annular cavity 8 is provided on one side of the rotating chassis 2. The air intake pipe 12 is connected to a negative pressure pump in the outside world.

[0025] During specific implementation, an external negative pressure pump is connected to the suction pipe 12 to extract the air in the annular cavity 8, causing the piston plate 9 to move downward, forming a negative pressure above the piston plate 9, and then preliminarily fixing the workpiece 3 under the action of the first through hole 10 and the second through hole 11.

[0026] refer to Figure 4 In order to prevent metal debris from accumulating in the gap between the workpiece 3 and the clamping groove 5 during the later processing of the workpiece 3, multiple sets of shielding structures are provided in the rotating chassis 2.

[0027] refer to Figure 2 、 Figure 4 and Figure 7 The shielding structure includes a sliding groove 29 provided in the rotating chassis 2. The sliding groove 29 is connected to the annular cavity 8 through a connecting groove 30. The connecting groove 30 is located below the piston plate 9. A piston rod 34 is sealingly and slidably connected in the connecting groove 30. A fixed rod 31 is fixed in the sliding groove 29. A sliding plate 32 is sealingly and slidably connected in the sliding groove 29. The sliding plate 32 is sealingly and slidably sleeved on the outer wall of the fixed rod 31. The end of the piston rod 34 away from the annular cavity 8 is fixedly connected to the sliding plate 32. When the air in the annular cavity 8 is extracted, the sliding plate 32 can be driven to move toward the middle by the piston rod 34. A second spring 33 sleeved on the outer wall of the fixed rod 31 is fixed to the side of the sliding plate 32 close to the piston rod 34. One end of the second spring 33 is fixedly connected to the inner wall of one side of the sliding groove 29, which is used to drive the baffle 36 to automatically reset. The baffle 36 slides on the top of the rotating chassis 2 to block the gap between the workpiece 3 and the clamping groove 5. A U-shaped rod 35 is fixed to one side of the baffle 36. One end of the U-shaped rod 35 slides and extends into the sliding groove 29 and is fixedly connected to the sliding plate 32.

[0028] During specific implementation, when the air in the annular cavity 8 is extracted, the piston rod 34 can slide toward the middle in the connecting groove 30, and the piston rod 34 drives the sliding plate 32 and the baffle 36 to move synchronously, so that the multiple baffles 36 move toward the middle. The multiple baffles gather into a circular ring to block the gap between the workpiece 3 and the clamping groove 5, thereby preventing metal debris generated during the subsequent processing from falling into the gap and making it inconvenient to clean.

[0029] refer to Figure 3 and Figure 4 A plurality of positioning pins 7 are fixed to the inner wall of the bottom of the clamping groove 5 , and the plurality of positioning pins 7 cooperate with the flange holes 4 in the workpiece 3 to position the workpiece 3 .

[0030] refer to Figure 3-Figure 6The vacuum adsorption structure also includes multiple pressing structures for applying vertical force to the workpiece 3 during the vacuum adsorption process, further securing the workpiece 3. The pressing structures include a connecting tube 20 fixed to the bottom end of the positioning pin 7 and two pressing blocks 26 that slide through the positioning pin 7. An elastic structure such as a spring can be installed inside the connecting tube 20. Under the action of negative pressure, the pressing blocks 26 can move downward to apply pressure to the workpiece 3, enhancing the securing effect.

[0031] refer to Figure 4-Figure 6 The pressing structure includes a cavity 28 formed inside the positioning pin 7, the bottom end of the connecting tube 20 is fixedly extended into the annular cavity 8, and the cavity 28 is connected to the annular cavity 8 through the connecting tube 20. This design allows the negative pressure in the annular cavity 8 to be transmitted to the cavity 28, providing power for the subsequent movement of the piston block 21. The piston block 21 is sealed and slidably connected in the cavity 28, and a first spring 27 is fixed between the bottom end of the piston block 21 and the bottom inner wall of the cavity 28. A connecting rod 22 is fixed to the top of the piston block 21, and a pressure plate 23 is fixed to the top of the connecting rod 22. The pressure plate 23 slides in the cavity 28. When negative pressure is formed in the annular cavity 8, the piston block 21 moves downward under the action of the negative pressure, compressing the first spring 27, and at the same time driving the pressure plate 23 to move downward. Sliding holes 24 connected to the cavity 28 are provided on both sides of the positioning pin 7. Two pressure blocks 26 slide on the bottom of the pressure plate 23 and slide through the corresponding sliding holes 24 respectively. The inner walls of the sliding hole 24, on both sides facing away from each other, are provided with inclined grooves 25. A pin 46 slides within each inclined groove 25. The sides of the two pins 46 that are closer to each other are fixedly connected to the two sides of the pressure block 26. When the pressure plate 23 drives the pressure block 26 downward, the inclined grooves 25 and the pin 46 cooperate to cause the pressure block 26 to extend outward, thereby vertically clamping the workpiece 3.

[0032] During specific implementation, through the synergistic effect of the pressing structure and vacuum adsorption, when negative pressure is formed above the annular cavity 8, the piston block 21 moves downward and drives the pressure plate 23 and the pressure block 26 to move downward. With the cooperation of the inclined groove 25 and the pin shaft 46, the pressure block 26 extends to the outside, forming a stable vertical clamping of the workpiece 3, further increasing the stability of the workpiece 3.

[0033] refer to Figure 2-Figure 4 A rubber pad 6 is fixed to the bottom inner wall of the clamping groove 5. The rubber pad 6 has multiple holes formed therein, which mate with corresponding first and second through-holes 10 and 11. This design enhances the seal between the workpiece 3 and the bottom inner wall of the clamping groove 5, preventing vacuum leakage. The top end of the locating pin 7 is fixedly inserted through the rubber pad 6, ensuring that the locating pin 7 can be accurately inserted into the flange hole 4 of the workpiece 3, thereby achieving positioning of the workpiece 3.

[0034] In specific implementation, the provision of the rubber pad 6 enhances the sealing between the workpiece 3 and the inner wall of the bottom of the clamping groove 5, thereby improving the stability of vacuum adsorption.

[0035] refer to Figure 3 and Figure 4 The positioning pins 7 and the plurality of second through holes 11 are arranged in a staggered manner to ensure that the first through holes 10 and the second through holes 11 can stably adsorb the flange hole 4. This design avoids interference between the positioning pins 7 and the through holes and improves the efficiency of vacuum adsorption.

[0036] refer to Figure 3 and Figure 4 A circular hole 13 is provided in the rotating chassis 2 to facilitate the discharge of metal debris during the subsequent processing of the workpiece 3. Multiple baffles 36 gather together to form a ring to block the gap between the workpiece 3 and the clamping groove 5, preventing debris from entering the clamping groove 5 and affecting the vacuum adsorption effect.

[0037] In specific implementation, the staggered arrangement of the positioning pins 7 and the through holes and the provision of the circular holes 13 and the baffles 36 improves the stability of vacuum adsorption and the processing efficiency, while facilitating the discharge of metal debris.

[0038] refer to Figure 2 and Figure 4 A fixing ring 14 is fixed to the bottom of the rotating chassis 2, with its bottom end extending into the fixed disk 1. A bevel gear ring 16 is mounted on the outer wall of the fixing ring 14, secured by screws. An annular groove 15 is provided on the inner wall of the fixed disk 1 to accommodate the bevel gear ring 16. A first motor 17 is secured within the fixed disk 1. A bevel gear 18 is fixed to the output shaft of the first motor 17, meshing with the bevel gear ring 16. When the first motor 17 is started, the meshing transmission between the bevel gear 18 and the bevel gear ring 16 drives the rotating chassis 2 and the workpiece 3 to rotate.

[0039] In specific implementation, the driving design of the first motor 17, the bevel gear 18 and the bevel gear ring 16 realizes the rotation of the rotating chassis 2 and the workpiece 3, which facilitates the subsequent processing of the workpiece 3. This design improves the flexibility and efficiency of processing.

[0040] Through the above-described structure and implementation, the vacuum adsorption machining fixture can tightly adsorb the workpiece into the clamping groove through the vacuum adsorption structure, and further secure the workpiece through the pressing structure. At the same time, the shielding structure can prevent metal debris from accumulating in the gap between the workpiece and the clamping groove, thereby improving machining accuracy and efficiency and facilitating cleaning. This implementation is feasible and operable.

[0041] Reference Figure 8 and Figure 9, processing equipment, relates to submersible pump processing equipment, including the above-mentioned fixture, and also includes components such as a base plate 37, an L-shaped plate 38, a threaded rod 41, a movable seat 40 and a processing structure.

[0042] Reference Figure 8 and Figure 9 , the base plate 37 serves as the basic supporting structure of the entire equipment and is used to carry other components. The fixed plate 1, which is fixed to the top of the base plate 37 by bolts, is a key part of the vacuum adsorption processing fixture and is used to support and fix the workpiece 3. The L-shaped plate 38 is welded to the top of the base plate 37 and has a rectangular groove 39 inside. The threaded rod 41 is rotatably connected in the rectangular groove 39 and is driven to rotate by a motor to drive the movable seat 40 to move. The movable seat 40 is slidably connected in the rectangular groove 39 and is threadedly connected to the threaded rod 41. When the threaded rod 41 rotates, the movable seat 40 can make a linear motion in the rectangular groove 39.

[0043] Refer to the figure Figure 9 The machining structure is disposed within the movable base 40 and is used to machine the end of the workpiece 3. The machining structure includes a cylinder 42 bolted to the top of the movable base 40. The output shaft of the cylinder 42 extends through the movable base 40 and is secured to a mounting housing 43. A second motor 44 is secured within the mounting housing 43. The output shaft of the second motor 44 is secured to a tool holder 45 via a coupling. The tool holder 45 is used to hold a machining tool, such as a milling cutter or a grinding wheel.

[0044] During specific implementation, the motor is started to drive the threaded rod 41 to rotate, and the rotation of the threaded rod 41 drives the movable seat 40 to move in the rectangular groove 39 through the threaded transmission. As the movable seat 40 moves, the mounting shell 43 and the tool holder 45 also move to the top of the workpiece 3. During the movement, the cylinder 42 is started, and the output shaft of the cylinder 42 pushes the tool holder 45 and the milling cutter clamped on the tool holder 45 to move downward, and the milling depth is determined according to the processing requirements; after the milling cutter reaches the specified position, the second motor 44 is started, and the second motor 44 drives the tool holder 45 and the milling cutter to rotate at high speed through the coupling. At the same time, the first motor 17 is started, and the first motor 17 drives the rotating chassis 2 and the workpiece 3 fixed on the rotating chassis 2 to rotate through the meshing transmission of the bevel gear 18 and the bevel gear ring 16. Under the combined action of the high-speed rotation of the milling cutter and the rotation of the workpiece 3, the milling cutter performs milling operation on the end of the workpiece 3, thereby achieving precise processing of the end of the workpiece 3; When grinding the end of workpiece 3, the milling cutter in tool holder 45 is replaced with a grinding wheel. Following the above steps, the grinding wheel is moved over workpiece 3 and the grinding depth is adjusted. The second motor 44 and the first motor 17 are activated, rotating the grinding wheel and workpiece 3, respectively, to complete the grinding of the end of workpiece 3.

[0045] Example 2: Reference Figure 10Based on the improvements of Example 1, a rotating ring 47 is securely fastened to the top of the fixed plate 1 with bolts. The rotating ring 47 is sealed and rotatably sleeved onto the outer wall of the rotating base plate 2, ensuring a tight seal between the two. Multiple L-shaped holes 19 are provided on the bottom inner wall of the annular chamber 8, and multiple connecting holes are provided within the rotating ring 47. These connecting holes cooperate with the L-shaped holes 19 to extract gas from the annular chamber 8. One end of the suction pipe 12 is fixedly connected to the rotating ring 47, providing a channel for gas extraction.

[0046] During implementation, an external negative pressure pump is connected to the suction pipe 12. After the negative pressure pump is activated, the air in the annular cavity 8 is extracted through the cooperation of the suction pipe 12 and the rotating ring 47, creating a negative pressure environment above the piston plate 9. During the machining of the workpiece 3, the rotating chassis 2 rotates on top of the fixed plate 1. Due to the good sealing between the rotating ring 47 and the rotating chassis 2, a negative pressure state is maintained above the piston plate 9, thereby firmly adsorbing the workpiece 3 and ensuring the stability and accuracy of the machining process.

[0047] The method for using the submersible pump head processing equipment includes the following steps: S1. Place the workpiece 3 in the clamping groove 5. The positioning pin 7 cooperates with the flange hole 4 to position the workpiece 3, so that the first through hole 10, the second through hole 11 and the flange hole 4 are misaligned, so that the flange hole 4 can be adsorbed into the clamping groove 5 through the first through hole 10 and the second through hole 11 in the later stage. Then, the external negative pressure pump is connected to the suction pipe 12 to extract the air in the annular cavity 8, so that the piston plate 9 moves downward, and negative pressure is formed above the piston plate 9. Then, the workpiece 3 is preliminarily fixed under the action of the first through hole 10 and the second through hole 11; S2. In addition, when negative pressure is formed above the annular cavity 8, the piston block 21 also moves downward under the action of the negative pressure and compresses the first spring 27. The piston block 21 drives the pressure plate 23 to move downward, and the pressure plate 23 drives the pressure block 26 to move downward. With the cooperation of the inclined groove 25 and the pin 46, the pressure block 26 extends outward. Therefore, the pressure block 26 can form a vertical clamping for the workpiece 3, further increasing the stability of the workpiece 3. S3. In addition, when the air in the annular cavity 8 is extracted, the piston rod 34 can slide toward the middle in the connecting groove 30, and the piston rod 34 drives the sliding plate 32 and the baffle 36 to move synchronously, so that the multiple baffles 36 move toward the middle, blocking the gap between the workpiece 3 and the clamping groove 5, and preventing metal debris generated during the subsequent processing from falling into the gap and making it inconvenient to clean; S4. During processing, the threaded rod 41 is driven to rotate by the motor, and the threaded rod 41 drives the mounting shell 43 and the tool holder 45 to move to the top of the workpiece 3 through the movable seat 40. During the movement, the cylinder 42 pushes the tool holder 45 and the milling cutter clamped in the tool holder 45 to move downward to determine the milling depth, and drives the milling cutter to rotate by the second motor 44 to perform the milling operation. Afterwards, the first motor 17 drives the rotating chassis 2 and the workpiece 3 to rotate through the cooperation of the bevel gear 18 and the bevel gear ring 16, and the milling cutter can perform milling operations at the end of the workpiece 3; in addition, the grinding wheel can be replaced to complete the grinding operation at the end of the workpiece 3.

[0048] However, as is well known to those skilled in the art, the working principles and wiring methods of the second motor 44, the cylinder 42 and the first motor 17 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting, but are merely for illustrative purposes. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0050] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A vacuum adsorption processing fixture for clamping and fixing a workpiece during milling, characterized in that: It comprises a fixed disk (1), the top of the fixed disk (1) is rotatably connected to a rotating chassis (2), and the top of the rotating chassis (2) is provided with a clamping groove (5) for placing a workpiece (3); In order to be able to tightly adsorb the workpiece (3) in the clamping groove (5), a vacuum adsorption structure is provided in the rotating chassis (2), and the vacuum adsorption structure includes a plurality of first through holes (10) and second through holes (11) provided on the inner wall of the bottom of the clamping groove (5); A plurality of positioning pins (7) are fixed to the inner wall of the bottom of the clamping groove (5), and the plurality of positioning pins (7) cooperate with the flange holes (4) in the workpiece (3) to position the workpiece (3).

2. A vacuum adsorption processing fixture according to claim 1, characterized in that: The vacuum adsorption structure also includes an annular cavity (8) arranged in the rotating chassis (2), the bottom ends of the second through hole (11) and the first through hole (10) both extend into the annular cavity (8), and a piston plate (9) is sealed and slidably connected in the annular cavity (8). The downward movement of the piston plate (9) can form a negative pressure above it, and thus the workpiece (3) can be fixed through the cooperation of the first through hole (10) and the second through hole (11). One side of the rotating chassis (2) is provided with an air intake pipe (12) for extracting the air below the piston plate (9) in the annular cavity (8), and the air intake pipe (12) is connected to an external negative pressure pump. In order to prevent metal debris from accumulating in the gap between the workpiece (3) and the clamping groove (5) when the workpiece (3) is processed in the later stage, a plurality of shielding structures are provided in the rotating chassis (2), and the shielding structure includes a baffle (36).

3. The vacuum adsorption processing fixture according to claim 2, characterized in that: The shielding structure includes a sliding groove (29) provided in the rotating chassis (2), the sliding groove (29) and the annular cavity (8) are connected via a connecting groove (30), the connecting groove (30) is located below the piston plate (9), a piston rod (34) is sealingly and slidably connected in the connecting groove (30), a fixed rod (31) is fixed in the sliding groove (29), a sliding plate (32) is sealingly and slidably connected in the sliding groove (29), and the sliding plate (32) is sealingly and slidably sleeved on the outer wall of the fixed rod (31), the end of the piston rod (34) away from the annular cavity (8) is fixedly connected to the sliding plate (32), and when the air in the annular cavity (8) is extracted, the sliding plate (32) can be driven toward the center by the piston rod (34). The second spring (33) is fixed on one side of the sliding plate (32) close to the piston rod (34) and is sleeved on the outer wall of the fixed rod (31). One end of the second spring (33) is fixedly connected to the inner wall of one side of the sliding groove (29) for driving the baffle (36) to automatically reset. The baffle (36) slides on the top of the rotating chassis (2) and is used to block the gap between the workpiece (3) and the clamping groove (5). A U-shaped rod (35) is fixed on one side of the baffle (36). One end of the U-shaped rod (35) slides and extends into the sliding groove (29) and is fixedly connected to the sliding plate (32). The sliding plate (32) drives the baffle (36) through the U-shaped rod (35) to complete the blocking of the gap between the workpiece (3) and the clamping groove (5).

4. The vacuum adsorption processing fixture according to claim 3, characterized in that: A rubber pad (6) is fixed to the inner wall of the bottom of the clamping groove (5), and a plurality of holes are provided in the rubber pad (6). The plurality of holes respectively cooperate with the corresponding first through holes (10) and second through holes (11) to increase the sealing between the workpiece (3) and the inner wall of the bottom of the clamping groove (5). The top end of the positioning pin (7) is fixed and passes through the rubber pad (6).

5. The vacuum adsorption processing fixture according to claim 4, characterized in that: The positioning pins (7) and the plurality of second through holes (11) are arranged in an alternating manner to ensure that the first through hole (10) and the second through hole (11) can stably adsorb the flange hole (4). A circular hole (13) is provided in the rotating chassis (2) to facilitate the discharge of metal debris during the subsequent processing of the workpiece (3). The plurality of baffles (36) are gathered together to form a circular ring to block the gap between the workpiece (3) and the clamping groove (5).

6. The vacuum adsorption processing fixture according to claim 5, characterized in that: A fixing ring (14) is fixed to the bottom of the rotating chassis (2), and the bottom end of the fixing ring (14) extends into the fixed disk (1). The outer wall of the fixing ring (14) is provided with a bevel gear ring (16) through a screw fixing sleeve. The inner wall of the fixed disk (1) is provided with an annular groove (15) for making way for the bevel gear ring (16). A first motor (17) is fixed in the fixed disk (1), and an output shaft of the first motor (17) is fixed with a bevel gear (18). The bevel gear (18) is meshed with the bevel gear ring (16) and is used to drive the rotating chassis (2) and the workpiece (3) to rotate, so as to facilitate the subsequent processing of the workpiece (3).

7. Submersible pump head processing equipment, comprising a vacuum adsorption processing fixture according to claim 6, characterized in that: It also includes a base plate (37), the fixed plate (1) is fixed to the top of the base plate (37) by bolts, an L-shaped plate (38) is welded to the top of the base plate (37), a rectangular groove (39) is provided in the L-shaped plate (38), a threaded rod (41) is rotatably connected in the rectangular groove (39), a movable seat (40) threadedly connected to the threaded rod (41) is slidably connected in the rectangular groove (39), and a processing structure for processing the end of the workpiece (3) is provided in the movable seat (40); The processing structure includes a cylinder (42) fixed to the top of the movable seat (40) by bolts, the output shaft of the cylinder (42) passes through the movable seat (40) and is fixed with a mounting shell (43), a second motor (44) is fixed in the mounting shell (43), and the output shaft of the second motor (44) is fixed with a tool clamp (45) through a coupling, and the tool clamp (45) is used to clamp a processing tool.

8. The submersible pump head processing equipment according to claim 7, characterized in that: A rotating ring (47) is fixed to the top of the fixed disk (1) by bolts. The rotating ring (47) is sealingly and rotatably sleeved on the outer wall of the rotating chassis (2). The bottom inner wall of the annular cavity (8) is provided with a plurality of L-shaped holes (19). The rotating ring (47) is provided with a plurality of connecting holes, which cooperate with the L-shaped holes (19) to extract the gas in the annular cavity (8). One end of the suction pipe (12) is fixedly connected to the rotating ring (47).

9. A method for using a submersible pump head processing device, applied to the submersible pump head processing device according to claim 8, characterized in that: The following steps are involved: S1. Place the workpiece (3) into the clamping groove (5), and position the positioning pin (7) and the flange hole (4) so ​​that the first through hole (10), the second through hole (11) and the flange hole (4) are offset from each other, so that the workpiece (3) can be subsequently adsorbed into the clamping groove (5) through the two. Subsequently, connect an external negative pressure pump to the suction pipe (12), extract air from the annular cavity (8), and move the piston plate (9) downward, thereby forming a negative pressure above the piston plate, and preliminarily fix the workpiece (3) through the first through hole (10) and the second through hole (11). When the annular cavity (8) is evacuated, the piston rod (34) slides toward the middle in the connecting groove (30), driving the sliding plate (32) and the baffle (36) to move synchronously, so that the baffle (36) blocks the gap between the workpiece (3) and the clamping groove (5), preventing metal debris from falling into the gap during processing and being difficult to clean; During S3, the motor drives the threaded rod (41) to rotate, and drives the mounting shell (43) and the tool holder (45) to move to the top of the workpiece (3) through the movable seat (40); the cylinder (42) pushes the tool holder (45) and the milling cutter to move downward to determine the milling depth, and the second motor (44) drives the milling cutter to rotate for milling; then, the first motor (17) drives the rotating chassis (2) and the workpiece (3) to rotate through the bevel gear (18) and the bevel gear ring (16), and the milling cutter mills at the end of the workpiece (3); the grinding wheel can also be replaced to complete the grinding of the end of the workpiece (3).

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