Drilling pin device for plunger pump swashplate

Abstract

This invention relates to the field of plunger pump swashplate machining technology, specifically a drilling and pin-pressing device for the plunger pump swashplate. The device includes a machining platform, a lifting module on one side of the top of the machining platform, a process adjustment mechanism mounted on the lifting module, a swashplate clamping mechanism on the top of the machining platform, and a pin-pressing mechanism on the top of the machining platform. This invention utilizes the process adjustment mechanism to sequentially complete four processes: drilling, rough grinding, semi-fine grinding, and fine grinding, concentrating the drilling and grinding processes in one station, avoiding positioning errors caused by process transitions. A transmission change mechanism allows a set of machining motors to independently drive different machining heads, simplifying the transmission structure. Simultaneously, no tool changing is required during machining, improving machining efficiency. A pre-pin-pressing treatment mechanism cleans the drilled hole and applies lubricating oil before pin-pressing, preventing impurities from affecting the pin-pressing quality and reducing friction between the pin shaft and pin hole during pin-pressing.

Description

Technical Field

[0001] This invention belongs to the field of plunger pump swashplate machining technology, specifically relating to a drilling and pressing pin device for plunger pump swashplates. Background Technology

[0002] Piston pumps are one of the most important power components in hydraulic systems. Their core feature is the use of the reciprocating motion of the piston within the cylinder bore to change the volume of the sealed working chamber, thereby achieving oil suction and pressure. They are the highest-performing, highest-power-density, and highest-pressure pumps among all hydraulic pumps, but also the most complex in structure, requiring the highest manufacturing precision, and the highest in cost. During the oil suction process, as the piston moves backward, the volume of the sealed working chamber increases, creating a partial vacuum. Under atmospheric pressure, the oil in the tank opens the suction valve and enters the sealed chamber. When the piston moves forward, the volume of the sealed working chamber decreases, compressing the existing oil and increasing its pressure, thus opening the discharge valve and being delivered to the hydraulic system. In swashplate piston pumps, the swashplate directly converts the rotational motion of the drive shaft into the reciprocating motion of the piston, which is key to achieving oil suction and pressure, and is also the core of variable displacement pumps for displacement regulation.

[0003] During the machining of plunger pump swashplates, holes need to be drilled in the sidewalls of the swashplate and fixed pins need to be pressed in. Although the existing drilling and pin-pressing devices for plunger pump swashplates can basically meet the daily needs, there are multiple steps such as drilling, rough grinding, fine grinding and pressing between drilling and pin pressing in the actual production process. Positioning errors will accumulate when switching between processes, which will affect the quality of the final swashplate. Therefore, it is necessary to design a drilling and pin-pressing device for plunger pump swashplates. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling pin device for a plunger pump swashplate that is simple in structure and reasonably designed in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A drilling and pressing pin device for a plunger pump swashplate includes a processing platform, a lifting module on one side of the top of the processing platform, a process adjustment mechanism installed on the lifting module, a swashplate clamping mechanism on the top of the processing platform, a pressing pin mechanism on the top of the processing platform, and a pressing pin pretreatment mechanism on the processing platform.

[0007] The lifting module includes a mounting frame fixed on a processing platform. A control cabinet is provided on one side of the mounting frame, and a control module is provided in the control cabinet. A lifting screw is rotatably connected to the mounting frame, and a lifting platform is provided on the lifting screw.

[0008] The process adjustment mechanism includes an upper housing fixed on a lifting platform. An adjustment motor is fixedly installed on the inner wall of the upper housing. The output end of the adjustment motor is fixedly connected to a lower housing, and the lower housing is rotatably connected to the bottom of the upper housing. A support sleeve is fixedly installed in the lower housing, and a driven shaft is rotatably connected to a support plate symmetrically arranged on the inner wall of the support sleeve. A transmission groove is opened at the bottom of the driven shaft, and a transmission change mechanism is provided in the lower housing.

[0009] As a further optimization of the present invention, the transmission change mechanism includes a change motor fixed in the support sleeve, the output end of the change motor is fixedly connected to a cam sleeve, a side groove is opened on the side wall of the cam sleeve, the side groove is slidably connected to one end of the docking sleeve, and the docking sleeve is slidably connected to a limiting frame provided in the support sleeve.

[0010] As a further optimization of the present invention, the docking sleeve is rotatably connected to the docking post, and the lower end of the docking post is slidably connected to the slot opened at the top of the rotating sleeve. The rotating sleeve is rotatably connected to the support sleeve. A drilling support column is slidably connected in the groove opened at the bottom of the rotating sleeve, and a processing head is fixedly installed at the bottom end of the drilling support column. A lower pressure plate is rotatably connected to the drilling support column. The lower pressure plate is fixed to the output end of the lower pressure cylinder, and the lower pressure cylinder is symmetrically installed at the bottom of the support sleeve.

[0011] As a further optimization of the present invention, a transmission belt is wound around the driven shaft, and the transmission belt is wound around the central wheel. The bottom end of the central wheel is rotatably connected to the cam sleeve, and the top of the central wheel is connected to the output end of the processing motor through a pulley and belt. The processing motor is fixed on the outside of the support sleeve.

[0012] As a further optimization of the present invention, the pre-treatment mechanism for pressing pins includes a pre-treatment bracket fixed on the processing platform, a processing motor fixedly installed on the top of the pre-treatment bracket, and a square bar fixedly connected to the output end of the processing motor. The square bar is slidably connected in an outer sleeve, and the outer sleeve is connected to a support seat through a threaded connection. The support seat is fixed on the pre-treatment bracket.

[0013] As a further optimization of the present invention, a connecting frame is fixedly provided at one end of the outer sleeve, a processing sleeve is provided between the connecting frames, an air inlet is provided in the processing sleeve, an air outlet is provided at one end of the processing sleeve, oil grooves are uniformly provided on the side wall of the processing sleeve, oil outlets are uniformly provided on the outer wall of the processing sleeve, and the oil grooves are connected to the oil outlets. An elastic sealing mechanism is provided on the oil outlets. A cleaning sleeve is fitted on the end of the processing sleeve near the air outlet, and a rotor connector is rotatably connected to the end of the processing sleeve away from the air outlet.

[0014] As a further optimization of the present invention, a lifting motor is fixedly installed on the top of the mounting frame, and the output end of the lifting motor is fixedly connected to the lifting screw.

[0015] As a further optimization of the present invention, the swashplate clamping mechanism includes a rotating platform rotatably connected to the processing platform. The bottom of the rotating platform is fixedly connected to the output end of a rotating motor. The rotating motor is fixed inside the processing platform. Fixed frames are symmetrically arranged on the top of the rotating platform. Swashplate clamping sleeves are rotatably connected between the fixed frames. A flip motor is fixedly connected to one side of the fixed frame. The output end of the flip motor is fixedly connected to the swashplate clamping sleeve on one side.

[0016] As a further optimization of the present invention, the pin pressing mechanism includes a pin pressing bracket fixed on the processing platform, a pin pressing hydraulic cylinder fixed on the top of the pin pressing bracket, and a pin pressing shaft provided at the output end of the pin pressing hydraulic cylinder.

[0017] As a further optimization of the present invention, a mounting frame is provided on one side of the top of the pressure pin bracket, and clamping cylinders are symmetrically mounted on the mounting frame. The output end of the clamping cylinder is fixedly connected to a pin clamping plate, and the pin clamping plate is slidably connected to a guide rail provided on one side of the clamping cylinder.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention rotates the cam sleeve by changing the operation of the motor. During the rotation of the cam sleeve, the corresponding docking post on the drilling tool moves upward through the sliding connection between the side slot and the support sleeve. The conical structure at the top of the docking post is sleeved on the transmission groove at the bottom of the driven shaft. The rotary transmission structure composed of the docking post, the rotating sleeve and the drilling support can rotate with the central wheel. One set of processing motors can drive different processing heads independently. There is no need to change tools during the processing, which improves the processing efficiency of the device.

[0020] 2. This invention uses a swashplate clamping mechanism to fix the swashplate that needs to be drilled. During the processing, the lower housing and support sleeve are rotated by adjusting the motor to move the machining head to be used directly above the swashplate. The drive component is connected by a transmission change mechanism. After the process is completed, the tool is changed by the process adjustment mechanism. The four processes of drilling, rough grinding, semi-fine grinding and fine grinding can be completed in sequence. The drilling and grinding processes are concentrated in one station, avoiding positioning errors caused by process changes.

[0021] 3. In this invention, the motor drives the outer sleeve to rotate via a square bar. During the rotation of the outer sleeve, it approaches the hole on the swashplate through the threaded engagement with the support base, and then enters the hole where the pin needs to be pressed. During entry, compressed air is first sprayed obliquely from the outlet through the air inlet interface to blow away the machining debris remaining in the hole. At the same time, the rotating cleaning sleeve cleans the debris, completely removing it from the hole. As the processing sleeve penetrates deeper, the sealing head in the elastic sealing mechanism compresses the sealing spring under the pressure inside the hole. Simultaneously, lubricating oil enters the oil groove through the oil inlet interface and exits from the oil outlet. The lubricating oil flows out from the gap between the sealing head and the end of the oil groove and is applied to the inside of the hole as the processing sleeve rotates. Then, the air pump connected to the air circuit interface stops intake, and the processing motor drives the outer sleeve to rotate through the square bar, causing the processing sleeve to rotate and return to its original position. During this process, the evenly distributed elastic sealing mechanisms exit the hole in sequence. As the processing sleeve moves outward and returns to its original position, the lubricating oil applied to the inside of the hole is evenly applied through the cleaning sleeve. One run can complete both drilling cleaning and oiling. This avoids impurities remaining and affecting the quality of the pin pressing, while the application of lubricating oil reduces the friction between the pin and the pin hole during the pin pressing process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the swashplate clamping mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the pressing pin mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the pin clamping plate in this invention;

[0026] Figure 5 This is a partial three-dimensional structural diagram of the present invention;

[0027] Figure 6 This is a schematic diagram of the process adjustment mechanism of the present invention;

[0028] Figure 7 This is a partially exploded view of the structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the mating relationship between the side groove and the mating sleeve of the present invention;

[0030] Figure 9 This is a schematic diagram of the assembly structure of the pre-treatment mechanism for pressing pins according to the present invention;

[0031] Figure 10 This is a schematic diagram of the connection between the rotor connector and the processing sleeve of the present invention.

[0032] In the diagram: 1. Machining platform; 2. Lifting module; 3. Process adjustment mechanism; 4. Transmission change mechanism; 5. Swashplate clamping mechanism; 6. Pressing pin mechanism; 7. Pressing pin pretreatment mechanism; 8. Machining cutter head; 21. Mounting bracket; 22. Lifting screw; 23. Lifting table; 24. Lifting motor; 31. Upper housing; 32. Adjusting motor; 33. Lower housing; 34. Support sleeve; 35. Driven shaft; 36. Transmission groove; 37. Transmission belt; 38. Center wheel; 39. Machining motor; 40. Pressing cylinder; 41. Changing motor; 42. Cam sleeve; 43. Side slot; 44. Connecting sleeve ; 46. Docking post; 47. Rotating sleeve; 48. Drilling support column; 49. Lower pressure plate; 51. Rotating table; 52. Fixing frame; 53. Swashplate clamping sleeve; 54. Tilting motor; 61. Pressing pin bracket; 62. Pressing pin hydraulic cylinder; 63. Mounting frame; 64. Clamping cylinder; 65. Pin shaft clamping plate; 69. Connecting frame; 70. Rotor joint; 71. Pre-treatment bracket; 72. Treatment motor; 73. Square bar; 74. Outer sleeve; 75. Support base; 76. Treatment sleeve; 77. Air inlet; 78. Air outlet; 79. Cleaning sleeve; 80. Oil groove; 81. Elastic sealing mechanism. Detailed Implementation

[0033] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] Example: Please refer to Figures 1-10 The drilling and pin-pressing device for the swashplate of a plunger pump includes a processing platform 1. A lifting module 2 is provided on one side of the top of the processing platform 1. A process adjustment mechanism 3 is installed on the lifting module 2. The lifting module 2 is used to adjust the height position of the process adjustment mechanism 3. A processing cutter head 8 for drilling and grinding is installed in the process adjustment mechanism 3. During the processing, the tool can be automatically changed at a single station, concentrating the drilling and grinding processes at one station, avoiding positioning errors caused by process changes. During processing, the lifting module 2 drives the processing cutter head 8 to move down to process the swashplate of the plunger pump. A swashplate clamping mechanism 5 is provided on the top of the processing platform 1 to fix the swashplate of the plunger pump. A pin-pressing mechanism 6 is provided on the top of the processing platform 1, and a pin-pressing pretreatment mechanism 7 is provided on the processing platform 1. After drilling and grinding, the pin hole is cleaned by the pin-pressing pretreatment mechanism 7 and a layer of oil film is applied simultaneously. Then, the pin is pressed in conjunction with the pin-pressing mechanism 6, which can reduce the friction between the pin and the pin hole and ensure the normal operation of the pin pressing.

[0035] Please see Figure 1The lifting module 2 includes a mounting frame 21 fixed on the processing platform 1. A control cabinet is installed on one side of the mounting frame 21, and a control module is installed in the control cabinet. During the processing, the control module drives the lifting module 2, the process adjustment mechanism 3, the swashplate clamping mechanism 5, the pin-pressing pretreatment mechanism 7, and the pin-pressing mechanism 6 to operate in an orderly manner, sequentially completing the processes of drilling, rough grinding, semi-fine grinding, fine grinding, cleaning and oiling, and pin pressing on the swashplate. A lifting screw 22 is rotatably connected to the mounting frame 21 via bearings. A lifting platform 23 is installed on the lifting screw 22. 3. The lifting platform 23 is connected to the lifting screw 22 by the internally embedded ball nut. A slider is provided on the side of the lifting platform 23 near the mounting frame 21. The slider is slidably connected to the guide rail on the side of the mounting frame 21. The lifting motor 24 is fixedly installed on the top of the mounting frame 21. The output end of the lifting motor 24 is connected to the top of the lifting screw 22 through a coupling. During the process of the lifting motor 24 driving the lifting screw 22 to rotate, the lifting platform 23 can be moved up and down along the axis of the lifting screw 22 through the cooperation between the lifting screw 22 and the lifting platform 23.

[0036] Please see Figures 1-2 The swashplate clamping mechanism 5 includes a rotary table 51 rotatably connected to the machining platform 1 via bearings. The bottom of the rotary table 51 is fixedly connected to the output end of a rotary motor, which drives the rotary table 51 to rotate. The rotary motor is fixed inside the machining platform 1. A fixed frame 52 is symmetrically arranged on the top of the rotary table 51. A swashplate clamping sleeve 53 is rotatably connected to the fixed frame 52. A tilting motor 54 is fixedly connected to the fixed frame 52 on one side. The output end of the tilting motor 54 is fixedly connected to the tiltplate clamping sleeve 53 on one side. The tilting motor 54 drives the swashplate to tilt. When fixing the plunger pump swashplate, the tiltplate clamping sleeve 53 is put on the swashplate from both sides, and then the fixed frame 52 is fixed to the top of the rotary table 51 by pins.

[0037] Please see Figures 3-4The pin-pressing mechanism 6 includes a pin-pressing bracket 61 fixed on the processing platform 1. A pin-pressing hydraulic cylinder 62 is fixed to the top of the pin-pressing bracket 61. A pin-pressing shaft is fixed to the output end of the pin-pressing hydraulic cylinder 62. The pin-pressing shaft is used to transmit the pressure of the pin-pressing hydraulic cylinder 62 to the pin shaft. A mounting frame 63 is provided on one side of the top of the pin-pressing bracket 61, and clamping cylinders 64 are symmetrically mounted on one side of the mounting frame 63. A pin shaft clamping plate 65 is fixedly connected to the output end of the clamping cylinder 64, and the pin shaft clamping plate 65 is slidably connected to the guide rail provided on one side of the clamping cylinder 64. The control module drives the clamping cylinders on both sides. The holding cylinder 64 extends simultaneously, thereby locking the pin with the pin clamping plates 65 on both sides. After the pin is clamped, it fits against the ball bearings embedded in the pin clamping plate 65. Then, during the pin pressing process, the pin pressing hydraulic cylinder 62 extends the pin pressing shaft. After the pin pressing shaft contacts the pin, it pushes the pin pressing shaft to slide in the pin clamping plate 65. During the sliding process, the ball bearings embedded in the pin clamping plate 65 prevent damage to the pin. After one end of the pin is pressed into the hole on the swashplate, the holding cylinder 64 drives the pin clamping plate 65 to return to its position. At the same time, the pin pressing hydraulic cylinder 62 continuously provides pressure to press the pin into the drilled hole.

[0038] Please see Figures 5-8The process adjustment mechanism 3 includes an upper housing 31 fixed on the lifting platform 23. An adjustment motor 32 is fixedly installed on the inner wall of the upper housing 31. The output end of the adjustment motor 32 is fixedly connected to a lower housing 33. A circular protrusion on the top of the lower housing 33 is rotatably connected to a circular groove at the bottom of the upper housing 31 via a bearing. A support sleeve 34 is fixedly installed in the lower housing 33. A driven shaft 35 is rotatably connected to four sets of support plates symmetrically arranged on the inner wall of the support sleeve 34 via bearings. A tapered transmission groove 36 is opened at the bottom of the driven shaft 35. A transmission change mechanism 4 is installed in the lower housing 33. The transmission change mechanism 4 includes a change motor 41 fixed at the bottom of the support sleeve 34. The output end of the change motor 41 is connected to a lower housing 33 via a bearing. The shaft is fixedly connected to the bottom of the cam sleeve 42. A side groove 43 is provided on the side wall of the cam sleeve 42. The side groove 43 is slidably connected to one end of the mating sleeve 44. The mating sleeve 44 is slidably connected to the limiting bracket provided in the support sleeve 34. The limiting bracket is used to limit the mating sleeve 44 and prevent the mating sleeve 44 from rotating as it slides along the side groove 43. The mating sleeve 44 is rotatably connected to the mating post 46, and the mating post 46 is slidably connected to the groove provided on the top of the rotating sleeve 47. The rotating sleeve 47 is rotatably connected to the support sleeve 34 through a bearing. A drilling support post 48 is slidably connected to the groove provided on the bottom of the rotating sleeve 47, and a machining head 8 is fixedly installed at the bottom end of the drilling support post 48. The machining head 8 has four sets. These are drilling tools, rough grinding tools, semi-finishing tools, and finish grinding tools, corresponding to four drilling supports 48. A lower pressure plate 49 is rotatably connected to each drilling support 48 via bearings. The lower pressure plate 49 is fixed to the output end of a lower pressure cylinder 40, which is symmetrically mounted at the bottom of the support sleeve 34. A drive belt 37 is wound around the driven shaft 35 and wound around a central wheel 38. The bottom end of the central wheel 38 is rotatably connected to a cam sleeve 42, and the top of the central wheel 38 is connected to the output end of a machining motor 39 via a pulley and belt. The machining motor 39 is fixed to the outside of the support sleeve 34. During the drilling process of the plunger pump swashplate, the lower housing 33 is first driven by adjusting the motor 32. As the support sleeve 34 rotates, the machining head 8, which serves as the drilling tool, is moved to the top of the swashplate. Simultaneously, the control module drives the change motor 41 to rotate the cam sleeve 42. During the rotation of the cam sleeve 42, it slides through the side slot 43 and the support sleeve 34, causing the corresponding docking post 46 on the drilling tool to move upward. After the conical structure at the top of the docking post 46 is inserted into the transmission slot 36 at the bottom of the driven shaft 35, the rotary transmission structure composed of the docking post 46, the rotating sleeve 47, and the drilling support post 48 can rotate with the center wheel 38. Then, in conjunction with the downward movement of the lifting platform 23, it provides feed action for the drilling tool to drill on the swashplate. Afterward, the adjustment motor 32 and the change motor 41 rotate again to automatically change the tool.

[0039] Please see Figures 1-2 and Figures 9-10The pre-treatment mechanism 7 for pressing pins includes a pre-treatment bracket 71 fixed on the processing platform 1. A processing motor 72 is fixedly installed on the top of the pre-treatment bracket 71, and a square bar 73 is fixedly connected to the output end of the processing motor 72. The square bar 73 is slidably connected in an outer sleeve 74. The outer sleeve 74 is connected to a support base 75 through a threaded connection on its outer wall. The support base 75 is fixed on the pre-treatment bracket 71. A connecting frame 69 is fixedly installed at one end of the outer sleeve 74. A processing sleeve 76 is fixedly installed between the connecting frames 69. An air inlet 77 is opened on the processing sleeve 76, and an air outlet 78 is opened at one end of the processing sleeve 76. Oil grooves 80 are evenly arranged on the side wall of the processing sleeve 76. An oil outlet hole is provided on the outer wall of the oil sleeve 76, and the oil passage 80 is connected to the oil outlet hole. An elastic sealing mechanism 81 is provided on the oil outlet hole. The elastic sealing mechanism 81 consists of a sealing head fitted at the port of the oil passage 80 and a sealing spring that provides sealing elasticity. Under normal conditions, the sealing spring provides thrust to the sealing head, thereby sealing the port of the oil passage 80 through the sealing head. A cleaning sleeve 79 is fitted on the end of the processing sleeve 76 near the vent 78. The cleaning sleeve 79 is located between the vent 78 and the elastic sealing mechanism 81. A rotor joint 70 is rotatably connected to the end of the processing sleeve 76 away from the vent 78. An oil passage interface connected to the oil passage 80 is provided at the bottom of the rotor joint 70, and the middle of the rotor joint 70 is... An air inlet 77 is provided. During use, the oil inlet is connected to the oil supply line, and the air inlet is connected to the air pump. When the rotating motor, in conjunction with the tilting motor 54, aligns the axis of the hole on the swashplate with the axis of the processing sleeve 76, the processing motor 72 drives the outer sleeve 74 to rotate via the square bar 73. During rotation, the outer sleeve 74 approaches the hole on the swashplate using its threaded engagement with the support seat 75, and then enters the hole where the pin needs to be pressed. During entry, compressed air is first ejected obliquely from the outlet 78 through the air inlet 77 via the air inlet 77, blowing away residual machining debris in the hole. Simultaneously, the rotating cleaning sleeve 79 cleans the debris, completely removing it from the hole. As the processing sleeve 76 penetrates the elastic sealing mechanism 81, the sealing head compresses the sealing spring under the pressure inside the hole. At the same time, lubricating oil enters the oil groove 80 through the oil passage interface and flows out from the gap between the sealing head and the end of the oil groove 80. As the processing sleeve 76 rotates, it is coated on the inside of the hole. Then, the air pump connected to the air passage interface stops air intake, and the processing motor 72 drives the outer sleeve 74 to rotate in the opposite direction through the square bar 73, so that the processing sleeve 76 rotates in the opposite direction and returns to its position. During the process, the evenly distributed elastic sealing mechanisms 81 exit the hole one by one. As the processing sleeve 76 moves outward and returns to its position, the lubricating oil coated on the inside of the hole is evenly coated by the cleaning sleeve 79 until the processing sleeve 76 is completely removed from the hole that needs to be pressed.

[0040] It should be noted that, in use, the drilling pin device of the plunger pump swashplate is first fixed by securing the plunger pump swashplate. During this process, the swashplate clamping sleeve 53 is placed on the swashplate from both sides. Then, the fixing bracket 52 is fixed to the top of the rotating table 51 by pins. Next, the swashplate clamping sleeve 53 is rotated by the tilting motor 54 so that the surface to be drilled is perpendicular to the rotating table 51. Subsequently, the lower housing 33 and the support sleeve 34 are rotated by the adjusting motor 32, moving the machining head 8, which serves as the drilling tool, to directly above the swashplate. At the same time, the control module drives the change motor 41 to run, causing the cam sleeve 42 to rotate. During the rotation of the cam sleeve 42, it slides through the side slot 43 and the support sleeve 34, causing the docking post 46 corresponding to the drilling tool to move upward. The cone at the top of the docking post 46... After the shaped structure is inserted into the transmission groove 36 at the bottom of the driven shaft 35, the rotary transmission structure composed of the docking column 46, the rotating sleeve 47, and the drilling support column 48 can rotate with the center wheel 38. Then, the machining motor 39 drives the center wheel 38 to rotate through the pulley, causing the drilling tool at the bottom of the drilling support column 48 to rotate. At the same time, the lifting motor 24 drives the lifting screw 22 to rotate. Through the cooperation of the lifting screw 22 and the lifting platform 23, the lifting platform 23 is moved down along the axis of the lifting screw 22, and the rotating drilling tool drills a hole on the swashplate. Subsequently, the lifting motor 24 drives the drilling tool to move up and return to its position. The adjusting motor 32 drives the lower housing 33 to rotate 90 degrees, moving the machining head 8, which serves as the rough grinding tool, to the top of the swashplate. At the same time, the changing motor 41 drives the... The cam sleeve 42 rotates 90 degrees, causing the corresponding mating post 46 on the rough grinding tool to move upward and mate with the transmission groove 36 at the bottom of the driven shaft 35, realizing the tool change action. Then, it reciprocates to complete the rough grinding, semi-finish grinding and finish grinding in sequence. After finish grinding, the rotation motor and the tilting motor 54 work together to make the axis of the hole on the swashplate coincide with the axis of the processing sleeve 76. Then, the processing motor 72 drives the outer sleeve 74 to rotate through the square bar 73. During the rotation, the outer sleeve 74 moves closer to the hole on the swashplate by using the thread engagement with the support seat 75, and then enters the hole where the pin needs to be pressed. During the entry process, the air inlet 77 is connected to the air passage interface so that compressed air is sprayed obliquely from the air outlet 78 to blow away the machining debris remaining in the hole. At the same time, the rotating cleaning sleeve 79 Clean up the debris and remove it completely from the hole. As the processing sleeve 76 goes deeper, the sealing head in the elastic sealing mechanism 81 will compress the sealing spring under the pressure inside the hole. At the same time, lubricating oil enters the oil groove 80 through the oil circuit interface and flows out from the gap between the sealing head and the end of the oil groove 80. With the rotation of the processing sleeve 76, it is applied to the inside of the hole. Then, the air pump connected to the air circuit interface stops air intake. The processing motor 72 drives the outer sleeve 74 to rotate in the opposite direction through the square bar 73, so that the processing sleeve 76 rotates back to its original position. During the process, the evenly distributed elastic sealing mechanisms 81 exit the hole one by one. As the processing sleeve 76 moves outward and returns to its original position, the lubricating oil applied inside the hole is evenly applied by the cleaning sleeve 79 until the processing sleeve 76 is completely removed from the hole that needs to be pressed.Then, the rotation motor, in conjunction with the tilting motor 54, causes the axis of the hole on the swashplate to coincide with the axis of the pin between the pin clamping plate 65. The pressing hydraulic cylinder 62 then extends the pressing pin. After the pressing pin contacts the main pin, it continues to press the pin as it slides within the pin clamping plate 65. During this sliding process, ball bearings embedded in the pin clamping plate 65 prevent damage to the pin. After one end of the pin is pressed into the hole on the swashplate, the clamping cylinder 64 drives the pin clamping plate 65 back to its original position. Simultaneously, the pressing hydraulic cylinder 62 continuously applies pressure to press the pin into the drilled hole, thus completing the pressing action.

[0041] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A drilling and pressing pin device for a plunger pump swashplate, comprising a machining platform, characterized in that: A lifting module is provided on one side of the top of the processing platform. A process adjustment mechanism is installed on the lifting module. A slant clamping mechanism is provided on the top of the processing platform. A pin pressing mechanism is provided on the top of the processing platform. A pin pressing pre-processing mechanism is also provided on the processing platform. The lifting module includes a mounting frame fixed on a processing platform. A control cabinet is provided on one side of the mounting frame, and a control module is provided in the control cabinet. A lifting screw is rotatably connected to the mounting frame, and a lifting platform is provided on the lifting screw. The process adjustment mechanism includes an upper housing fixed on a lifting platform, an adjustment motor fixedly installed on the inner wall of the upper housing, a lower housing fixedly connected to the output end of the adjustment motor, and the lower housing rotatably connected to the bottom of the upper housing. A support sleeve is fixedly installed in the lower housing, and a driven shaft is rotatably connected to a support plate symmetrically arranged on the inner wall of the support sleeve. A transmission groove is opened at the bottom of the driven shaft, and a transmission change mechanism is provided in the lower housing. The transmission change mechanism includes a change motor fixed in the support sleeve. The output end of the change motor is fixedly connected to a cam sleeve. A side groove is opened on the side wall of the cam sleeve. The side groove is slidably connected to one end of the docking sleeve. The docking sleeve is slidably connected to a limiting frame set in the support sleeve. The docking sleeve is rotatably connected to a docking post. The lower end of the docking post is slidably connected to a groove opened at the top of the rotating sleeve. The rotating sleeve is rotatably connected to the support sleeve. A drilling support is slidably connected to a groove opened at the bottom of the rotating sleeve. A machining head is fixedly installed at the bottom end of the drilling support. A lower pressure plate is rotatably connected to the drilling support. The lower pressure plate is fixed to the output end of a lower pressure cylinder. The lower pressure cylinder is symmetrically installed at the bottom of the support sleeve. A transmission belt is wound around the driven shaft. The transmission belt is wound around a central wheel. The bottom end of the central wheel is rotatably connected to the cam sleeve. The top of the central wheel is connected to the output end of the machining motor through a pulley and belt. The machining motor is fixed to the outside of the support sleeve.

2. The drilling and pressing pin device for the plunger pump swashplate according to claim 1, characterized in that: The pre-processing mechanism for pressing pins includes a pre-processing bracket fixed on a processing platform. A processing motor is fixedly installed on the top of the pre-processing bracket, and a square bar is fixedly connected to the output end of the processing motor. The square bar is slidably connected in an outer sleeve. The outer sleeve is connected to a support base through a threaded connection. The support base is fixed on the pre-processing bracket.

3. The drilling and pressing pin device for the plunger pump swashplate according to claim 2, characterized in that: A connecting frame is fixedly installed at one end of the outer sleeve, and a processing sleeve is arranged between the connecting frames. An air inlet is opened in the processing sleeve, and an air outlet is opened at one end of the processing sleeve. Oil grooves are evenly arranged on the side wall of the processing sleeve, and oil outlet holes are evenly arranged on the outer wall of the processing sleeve. The oil grooves are connected to the oil outlet holes, and an elastic sealing mechanism is provided on the oil outlet holes. A cleaning sleeve is fitted on the end of the processing sleeve near the air outlet hole, and a rotor connector is rotatably connected to the end of the processing sleeve away from the air outlet hole.

4. The drilling pin device for the plunger pump swashplate according to claim 1, characterized in that: A lifting motor is fixedly installed on the top of the mounting frame, and the output end of the lifting motor is fixedly connected to the lifting screw.

5. The drilling and pressing pin device for the plunger pump swashplate according to claim 1, characterized in that: The swashplate clamping mechanism includes a rotating platform rotatably connected to the processing platform. The bottom of the rotating platform is fixedly connected to the output end of a rotating motor. The rotating motor is fixed inside the processing platform. The top of the rotating platform is symmetrically provided with fixed frames. Swashplate clamping sleeves are rotatably connected between the fixed frames. A flip motor is fixedly connected to one side of the fixed frame. The output end of the flip motor is fixedly connected to the swashplate clamping sleeve on one side.

6. The drilling and pressing pin device for the plunger pump swashplate according to claim 1, characterized in that: The pin pressing mechanism includes a pin pressing bracket fixed on the processing platform, a pin pressing hydraulic cylinder fixed on the top of the pin pressing bracket, and a pin pressing shaft provided at the output end of the pin pressing hydraulic cylinder.

7. The drilling and pressing pin device for the plunger pump swashplate according to claim 6, characterized in that: The top side of the pressure pin bracket is provided with an installation frame, and clamping cylinders are symmetrically installed on the installation frame. The output end of the clamping cylinder is fixedly connected to a pin clamping plate, and the pin clamping plate is slidably connected to a guide rail provided on one side of the clamping cylinder.

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