Special-shaped high-pressure pump machining tool with machining coordinates

Abstract

The special-shaped high-pressure pump machining tool with the machining coordinates comprises a bottom plate, a machining platen, a pump body fixing base, a pump body positioning pin set, at least two special-shaped positioning columns, a pump body pressing assembly and an index plate, and the pump body fixing base is used for containing a to-be-machined special-shaped high-pressure pump; the pump body positioning pin group comprises a first positioning pin and a second positioning pin, each positioning pin can be movably and telescopically arranged in a positioning pin mounting channel of the pump body fixing seat and is propped against the elastic reset piece, and a sensor is arranged on the side of each positioning pin and is used for detecting a pressing state; the at least two special-shaped positioning columns are fixed to the two sides of the pump body fixing base, matched with a pump body machining datum plane in shape and used for machine tool detection so as to establish and maintain machining coordinates. The pump body pressing assembly is used for pressing or loosening the pump body; the index plate is fixed to the bottom plate and drives the machining platen to rotate, and the pump body fixing base and the pump body are driven to rotate around the X axis. The problems that when the special-shaped high-pressure pump is machined, special-shaped coordinates are difficult to position, and multi-face machining coordinates are prone to misalignment are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-pressure pump processing equipment, in particular to a special-shaped high-pressure pump processing tool with processing coordinates. BACKGROUND

[0002] In the processing of special-shaped high-pressure pumps, due to their irregular shape and lack of a unified reference surface, traditional processing tools have significant defects: on the one hand, they rely on manual tool setting to establish processing coordinates, which is cumbersome and prone to errors, resulting in low positioning accuracy; on the other hand, they need to be re-set when switching processing surfaces, which not only takes a long time but also easily causes the processing reference surfaces of different surfaces to be inconsistent, affecting the overall precision of the product. The existing technology does not design a complete scheme for "special-shaped positioning + multi-surface processing coordination", and cannot simultaneously meet the needs of rapid establishment and stable maintenance of coordinates. SUMMARY

[0003] The purpose of the present application is to overcome the defects of the prior art, and to provide a special-shaped high-pressure pump processing tool with processing coordinates, which solves the problems of "difficult special-shaped coordinate positioning" and "easy misalignment of multi-surface processing coordinates" during the processing of special-shaped high-pressure pumps.

[0004] The technical scheme of the present application is a special-shaped high-pressure pump processing tool with processing coordinates, which comprises a base plate, a processing table plate, a pump body fixing seat, a pump body positioning pin set, at least two special-shaped positioning columns, a pump body pressing assembly, and a dividing disc. The pump body fixing seat is fixed on the processing table plate and is used to place the special-shaped high-pressure pump to be processed. The pump body positioning pin set comprises at least one first positioning pin and one second positioning pin, each positioning pin is movably installed in the corresponding positioning pin installation channel on the pump body fixing seat, the head end of the positioning pin is exposed to the top surface of the pump body fixing seat, and the tail end abuts against the elastic return member, when the special-shaped high-pressure pump is correctly installed, the first positioning pin is inserted into the positioning hole in the bottom surface of the special-shaped high-pressure pump, and the second positioning pin is pressed into the positioning pin installation channel by the bottom surface of the special-shaped high-pressure pump, and each positioning pin is provided with a sensor on the side, the sensor is used to detect the pressing state of the corresponding positioning pin, and an abnormal positioning prompt is issued when each positioning pin is pressed in. The at least two special-shaped positioning columns are respectively fixed on the two side surfaces of the pump body fixing seat, their shapes are adapted to the processing reference surfaces of the special-shaped high-pressure pump, and they are used to detect the machine tool to establish and maintain the processing coordinates. The pump body pressing assembly is used to press or loosen the special-shaped high-pressure pump on the pump body fixing seat. The dividing disc is fixed on the base plate and is used to drive the rotation of the processing table plate, thereby driving the rotation of the pump body fixing seat and the special-shaped high-pressure pump thereon around the X-axis, and the machine tool can continuously obtain the processing coordinates of the special-shaped high-pressure pump by detecting the special-shaped positioning columns that move synchronously with the pump body fixing seat.

[0005] By adopting the above technical solution, the present invention has the following beneficial effects: 1. Through the combined design of "pump body positioning pin group + sensor", the installation status of irregular high-pressure pump can be automatically detected. When the irregular high-pressure pump is correctly installed, the first positioning pin extends into the positioning hole and the second positioning pin is pressed in. The sensor will only allow processing to begin after it detects that each positioning pin is in the correct position. However, if the pump body is misplaced and all positioning pins are pressed in, the positioning pins are not pressed in the correct position, and the sensor will issue an abnormality warning. This effectively avoids processing errors caused by installation deviations, significantly improves positioning accuracy, and avoids the problem of human error or improper installation from the source.

[0006] 2. With the help of at least two irregularly shaped positioning columns that are adapted to the pump body machining reference surface, the machine tool can quickly establish machining coordinates by detecting the irregularly shaped positioning columns. When the indexing plate drives the machining table to rotate the irregularly shaped high-pressure pump around the X-axis to switch machining surfaces, the machine tool can still maintain the machining coordinates stably by continuously detecting the irregularly shaped positioning columns, without the need for re-tooling. This solves the problem of coordinate inaccuracy during multi-face machining, ensures the uniformity of machining references for each surface, and thus improves the overall machining accuracy of the product.

[0007] 3. The indexing plate drives the machining table to rotate around the X-axis, which in turn drives the pump body to switch machining surfaces. This eliminates the need for frequent disassembly and assembly of tooling, greatly improving the efficiency of multi-face machining of irregular high-pressure pumps. At the same time, the coordinate holding function of the irregular positioning column ensures the consistency of machining of each batch of pump bodies.

[0008] A further provision of the present invention: the positioning pin mounting channel extends to the bottom surface of the pump body fixing seat; the positioning pin and the elastic reset member are inserted from the lower end of the positioning pin mounting channel; a first fastener is installed at the lower end of the positioning pin mounting channel and supported on the bottom surface of the elastic reset member; a sensor mounting channel is provided inside the pump body fixing seat on one side corresponding to the positioning pin mounting channel, and the sensor mounting channel extends to the bottom surface of the pump body fixing seat; the sensor is inserted from the lower end of the sensor mounting channel; the power line of the sensor passes through the lower end of the sensor mounting channel; a side hole communicating with the sensor mounting channel is provided on the outer side wall of the pump body fixing seat; a second fastener is installed in the side hole and abuts against and fixes the sensor.

[0009] The above-mentioned further design makes the installation of the positioning pin and the elastic reset component more convenient and stable. The first fastener is installed from the lower end of the positioning pin mounting channel and supports the bottom surface of the elastic reset component, ensuring the stability and reliability of the positioning pin during operation. At the same time, the sensor mounting channel facilitates the installation of the sensor. The sensor is inserted from the lower end of the sensor mounting channel, and the power cord exits from the lower end. This design facilitates the layout and connection of the wiring. The side hole on the outer wall of the pump body fixing seat, which communicates with the sensor mounting channel, works with the second fastener to abut and fix the sensor, further ensuring that the sensor is firmly installed and will not loosen or shift during operation. This improves the performance and stability of the entire irregular high-pressure pump machining fixture.

[0010] A further feature of the present invention is that the pump body positioning pin group includes three positioning pins, one of which is a first positioning pin and the other two are second positioning pins.

[0011] By adopting the above-mentioned further settings, the pump body positioning pin group is clearly defined as a combination of "1 first positioning pin + 2 second positioning pins". Compared with single or double positioning pin designs, it can more accurately adapt to the bottom structure of irregular high-pressure pumps. Even if there are slight dimensional deviations in the pump body, the "one insertion and two pressure" positioning logic can ensure that the installation position is unique, further reducing installation errors and improving positioning accuracy.

[0012] A further provision of the present invention: the pump body clamping assembly includes a hydraulic cylinder, a lever seat, an oil inlet plate, and a hydraulic oil pipe unit. The hydraulic cylinder is mounted on a processing table, the lever seat is connected to the piston rod of the hydraulic cylinder, and a pressure plate is provided on the lever seat. The oil inlet plate is connected to the hydraulic cylinder to drive the piston rod of the hydraulic cylinder to extend and retract, thereby causing the pressure plate on the lever seat to clamp or loosen the irregular high-pressure pump.

[0013] With the further configuration described above, the hydraulic cylinder controls the extension and retraction of the piston rod via the oil flow through the inlet plate, causing the pressure plate on the lever seat to press or release the pump body. Compared to manual pressing, the hydraulic drive force is stable and adjustable, allowing for precise control of the pressing force based on the pump body material and processing requirements. This avoids processing displacement caused by insufficient manual pressing force or pump body deformation caused by excessive force. The hydraulic drive structure has a high degree of automation, eliminating the need for repeated manual operation of the pressure plate. Combined with the machine tool's automatic processing flow, it achieves a semi-automatic connection between "clamping-processing-unclamping," improving overall processing efficiency.

[0014] A further provision of the present invention: the pump body clamping assembly further includes a hinged arm, a support is provided on the outer wall of the hydraulic cylinder, the upper end of the hinged arm is hinged to the middle of the lever seat, and its lower end is hinged to the support, one end of the lever seat is hinged to the piston rod of the hydraulic cylinder, and the other end is provided with the pressure plate. When the piston rod of the hydraulic cylinder extends and retracts, it drives the lever seat to swing, thereby driving the pressure plate to lift or press down the irregular high-pressure pump.

[0015] With the above-mentioned further configuration, the hinged arm connects the lever seat to the support on the outer wall of the hydraulic cylinder, forming a lever structure of "piston rod extension and retraction - lever seat rotation around the hinge point". Compared with the design of directly pushing the pressure plate, the hydraulic driving force can be amplified by the lever, and a larger pressure plate pressure can be achieved with a smaller cylinder stroke, reducing the size of the cylinder. At the same time, the pressing / lifting action of the pressure plate is more stable, avoiding uneven force on the pump body.

[0016] A further embodiment of the present invention includes: the pump body clamping assembly further includes a rotating oil inlet seat and an oil inlet shaft; the hydraulic oil pipe unit has hydraulic oil pipes; the oil inlet shaft passes through the center of the indexing plate and rotates synchronously with the processing table; the oil inlet seat, the oil inlet shaft, and the processing table all have oil passages inside; the oil inlet interface plate is connected to the oil passage of the oil inlet seat through a hydraulic oil pipe; one end of the oil passage of the processing table is connected to the oil passage of the oil inlet seat via the oil inlet shaft, and the other end is connected to the oil chamber of the hydraulic cylinder.

[0017] With the above-mentioned further configuration, the oil inlet seat and the oil inlet shaft rotate in coordination, and the internal oil circuit is connected. This solves the problem of hydraulic oil pipe entanglement and pulling when the indexing plate drives the machining table to rotate, ensuring that hydraulic oil is continuously and stably delivered to the hydraulic cylinder. This ensures that the clamping component always works normally during the pump body rotation machining process, avoiding machining interruption caused by oil circuit interruption. The oil circuit is integrated inside the oil inlet seat, oil inlet shaft and machining table. Compared with external oil pipe connection, it reduces the risk of oil pollution and oil pipe damage, and improves the overall sealing performance and service life of the tooling.

[0018] A further provision of the present invention: the hydraulic oil pipe unit has two hydraulic oil pipes, the inner wall of the oil inlet seat has two oil grooves circumferentially arranged, and the outer circumferential surface of the oil inlet seat has an oil inlet hole corresponding to the oil grooves. Each hydraulic oil pipe is connected to the corresponding oil inlet hole. The oil inlet shaft has two oil passages inside, and the outer circumferential surface of the oil inlet shaft has an oil passage corresponding to the oil passage. The oil inlet seat is sleeved on the outside of the oil inlet shaft, and the oil grooves of the oil inlet seat and the oil passage holes of the oil inlet shaft are connected one-to-one. A bearing is provided between the oil inlet seat and the oil inlet shaft.

[0019] With the above-mentioned further configuration, the two hydraulic oil pipes correspond to the two oil grooves of the oil inlet seat and the two oil circuits of the oil inlet shaft, realizing the independent "one in, one out" delivery of hydraulic oil, precisely controlling the extension and retraction direction of the hydraulic cylinder piston rod, avoiding action delays or malfunctions caused by the single oil pipe design, and ensuring smooth switching of the pressure plate tightening and loosening; and when the oil inlet shaft rotates, the oil passage hole always remains connected to the circumferentially set oil groove, so that the hydraulic oil circuit will not be interrupted during the rotation of the oil inlet shaft, ensuring the continuity and stability of the hydraulic system operation.

[0020] A further provision of the present invention: the two ends of the processing table are respectively fixed on the first base and the second base, the second base has an oil passage inside, the oil inlet shaft is connected to the second base and the oil passage of the oil inlet shaft is connected to the oil passage of the second base, a hydraulic pad is provided between the hydraulic cylinder and the processing table, the hydraulic pad has an oil hole inside, and the oil passage of the second base, the oil hole of the hydraulic pad and the oil chamber of the hydraulic cylinder are sequentially connected.

[0021] With the above-mentioned further configuration, the second base oil circuit, hydraulic pad oil hole and oil cylinder oil chamber are sequentially connected. The hydraulic pad not only buffers the oil cylinder pressure, but also accurately connects to the oil circuit through the oil hole, avoiding pressure loss caused by direct connection of the oil circuit. At the same time, it facilitates the installation and positioning between the oil cylinder and the processing table, and reduces the oil circuit connection deviation.

[0022] A further feature of the present invention is as follows: a rotating chuck is fixed on the base plate, the processing table is connected between the indexing plate and the rotating chuck, the indexing plate is used to drive the processing table to rotate around the X-axis, both the indexing plate and the rotating chuck are controlled by hydraulic brakes, and the hydraulic oil pipe unit includes a first hydraulic brake pipe and a second hydraulic brake pipe, the two ends of the first hydraulic brake pipe are respectively connected to the oil inlet interface plate and the indexing plate, and the two ends of the second hydraulic brake pipe are respectively connected to the oil inlet interface plate and the rotating chuck.

[0023] With the above-mentioned further configuration, both the indexing plate and the rotating chuck are controlled by hydraulic brakes, and the hydraulic fluid is supplied from the oil inlet plate through the first and second hydraulic brake pipes. The braking response is rapid and the braking force is stable, which avoids the table from rotating unexpectedly during the processing. At the same time, the hydraulic circuit system is simplified and the space occupied by the independent hydraulic brake supply device is reduced.

[0024] A further feature of the present invention includes a servo motor, which is connected to the indexing plate to provide rotational power to the indexing plate.

[0025] With the above-mentioned further configuration, the servo motor provides stable power to the indexing plate. Compared with ordinary motors, the servo motor has controllable speed and high positioning accuracy, and can accurately control the rotation angle of the indexing plate, ensuring that the angle deviation of the pump body when switching the processing surface is within the allowable range, thereby improving the positional accuracy of multi-face processing. Attached Figure Description

[0026] Figure 1 This is a structural diagram of a specific embodiment of the present invention; Figure 2 This is an internal structure diagram of a specific embodiment of the present invention; Figure 3 This is a structural diagram of the pump body fixing seat according to a specific embodiment of the present invention; Figure 4 This is a structural diagram of the bottom surface of the pump body fixing seat according to a specific embodiment of the present invention; Figure 5 This is a diagram showing the internal structure of the pump body mounting base according to a specific embodiment of the present invention; Figure 6 This is a diagram showing the internal structure of the pump body mounting base according to a specific embodiment of the present invention; Figure 7 This is a diagram of the pressure plate drive according to a specific embodiment of the present invention; Figure 8 This is an assembly diagram of the oil inlet seat and oil inlet shaft according to a specific embodiment of the present invention; Figure 9 This is a diagram showing the internal structure of the oil inlet seat and oil inlet shaft according to a specific embodiment of the present invention; Figure 10 This is a structural diagram of the oil inlet seat according to a specific embodiment of the present invention.

[0027] In the diagram: 1. Base plate; 2. Machining table; 3. Pump body mounting base; 4. Pump body positioning pin assembly; 41. First positioning pin; 42. Second positioning pin; 31. Positioning pin mounting channel; 5. Irregular positioning column; 6. Indexing plate; 7. Irregular high-pressure pump; 8. Elastic reset component; 9. Sensor; 10. First fastener; 32. Sensor mounting channel; 33. Side hole; 11. Second fastener; 12. Hydraulic cylinder; 121. Piston rod; 13. Lever seat; 14. Oil inlet interface plate; 15. Hydraulic oil pipe unit; 16. Pressure plate; 17. Hinge arm; 18. Support; 19. Oil inlet seat; 20. Oil inlet shaft; 151. Hydraulic oil pipe; 191. Oil groove; 192. Oil inlet hole; 201. Through hole; 22. Bearing; 23. First base; 24. Second base; 25. Hydraulic pad; 26. Rotating chuck; 152. First oil brake pipe; 153. Second oil brake pipe; 27. Servo motor; 28. Support base. Detailed Implementation

[0028] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-10As shown, the present invention provides a machining fixture for an irregularly shaped high-pressure pump with its own machining coordinates, including a base plate 1, a machining table 2, a pump body fixing seat 3, a pump body positioning pin group 4, at least two irregularly shaped positioning columns 5, a pump body clamping assembly, and an indexing plate 6. The pump body mounting base 3 is fixedly installed on the processing table 2 by screws or bolts, and is used to place the irregular high-pressure pump 7 to be processed; The pump body positioning pin assembly 4 includes at least one first positioning pin 41 and a second positioning pin 42. Each positioning pin is movably and retractably mounted in a corresponding positioning pin mounting channel 31 on the pump body fixing seat 3. The head end of the positioning pin protrudes from the top surface of the pump body fixing seat 3, and the end abuts against the elastic reset member 8. When the irregular high-pressure pump is correctly installed, the first positioning pin 41 extends into the positioning hole on the bottom surface of the irregular high-pressure pump 7, and the second positioning pin 42 is pressed into the positioning pin mounting channel 31 by the bottom surface of the irregular high-pressure pump 7. Each positioning pin is equipped with a sensor 9, which can be a displacement sensor, optical sensor, etc. The sensor 9 is used to detect the pressing state of the corresponding positioning pin. When all positioning pins are pressed in, a positioning abnormality prompt is issued. The positioning pin mounting channel 31 extends to the bottom surface of the pump body fixing seat 3, and the positioning pin and the elastic reset member are connected by positioning pins. The lower end of the positioning pin mounting channel 31 is inserted, and the first fastener 10 is installed at the lower end of the positioning pin mounting channel 31 and supported on the bottom surface of the elastic reset member 8, which is a spring; a sensor mounting channel 32 is opened inside the pump body fixing seat 3 on one side corresponding to the positioning pin mounting channel 31, and the sensor mounting channel 32 extends to the bottom surface of the pump body fixing seat 3. The sensor 9 is inserted from the lower end of the sensor mounting channel 32, and the power line of the sensor 9 passes out from the lower end of the sensor mounting channel 32. A side hole 33 communicating with the sensor mounting channel is opened on the outer side wall of the pump body fixing seat 3. The second fastener 11 is installed in the side hole 33 and abuts against and fixes the sensor 9. The fastener is a screw, bolt or pin; the pump body positioning pin group 4 includes three positioning pins, one of which is a first positioning pin 41 and the other two are second positioning pins 42. At least two irregularly shaped positioning pins 5 are fixed on both sides of the pump body mounting base 3 respectively. Their shapes are adapted to the machining reference surface of the irregularly shaped high-pressure pump 7 and are used for machine tool inspection to establish and maintain machining coordinates. The pump body clamping assembly is used to clamp or release the irregular high-pressure pump 7 on the pump body mounting base 3. The pump body clamping assembly includes a hydraulic cylinder 12, a lever seat 13, an oil inlet plate 14, and a hydraulic oil pipe unit 15. The hydraulic cylinder 12 is mounted on the processing table 2. The lever seat 13 is connected to the piston rod 121 of the hydraulic cylinder 12. A pressure plate 16 is provided on the lever seat 13. The oil inlet plate 14 is connected to the hydraulic cylinder 12 to drive the piston rod of the hydraulic cylinder 12 to extend and retract, thereby causing the pressure plate 16 on the lever seat 13 to clamp or release the irregular high-pressure pump 7. The pump body clamping assembly also includes a hinge arm 17. A support 18 is fixed or integrally provided on the outer wall of the hydraulic cylinder 12. The upper end of the hinge arm 17 is connected to the lever seat 121. The middle part of the lever seat 13 is hinged to the piston rod of the hydraulic cylinder 12 via a hinge shaft, and its lower end is hinged to the support 18 via a hinge shaft. One end of the lever seat 13 is hinged to the piston rod of the hydraulic cylinder 12 via a hinge shaft, and the other end is provided with the pressure plate 16. When the piston rod of the hydraulic cylinder 12 extends or retracts, it drives the lever seat 13 to swing, thereby driving the pressure plate 16 to lift or press down the irregular high-pressure pump 7. The pump body clamping assembly also includes a rotating oil inlet seat 19 and an oil inlet shaft 20. The hydraulic oil pipe unit 15 has a hydraulic oil pipe 151. The oil inlet seat is fixed to the base plate. The oil inlet shaft 20 passes through the middle of the indexing plate 6 and rotates synchronously with the processing table 2. The oil inlet seat 19, the oil inlet shaft 20 and the processing table 2 all have oil passages inside. The oil inlet interface plate 14 is connected to the hydraulic oil pipe. The oil passage 151 is connected to the oil inlet seat 19. One end of the oil passage of the processing table 2 is connected to the oil passage of the oil inlet seat 19 via the oil inlet shaft 20, and the other end is connected to the oil chamber of the hydraulic cylinder 12. The hydraulic oil pipe unit 15 has two hydraulic oil pipes 151. The inner wall of the oil inlet seat 19 is provided with two oil grooves 191 in the circumferential direction, and the outer circumferential surface of the oil inlet seat 19 is provided with oil inlet holes 192 corresponding to the oil grooves 191. Each hydraulic oil pipe 151 is connected to the corresponding oil inlet hole 192. The oil inlet shaft 20 has two oil passages inside, and the outer circumferential surface of the oil inlet shaft 20 is provided with oil passage holes 201 corresponding to the oil passages. The oil inlet seat 19 is sleeved on the outside of the oil inlet shaft 20, and the oil grooves 191 of the oil inlet seat 19 are connected to the oil passage holes 201 of the oil inlet shaft 20 one by one. The oil inlet seat 19 and the oil inlet shaft 20 are connected to each other. A bearing 22 is provided between the oil shafts 20, and an O-ring seal is also provided between the oil inlet seat 19 and the oil inlet shaft 20; the two ends of the processing table 2 are respectively fixed on the first base 23 and the second base 24. The second base 24 has an oil passage inside. The oil inlet shaft 20 is connected to the second base 24, and the oil passage between the oil inlet shaft 20 and the second base 24 is connected. A hydraulic pad 25 is provided between the hydraulic cylinder 12 and the processing table 2, and O-ring seals are installed between the hydraulic pad and the processing table and the hydraulic cylinder respectively. The hydraulic pad 25 has an oil hole inside. The oil passage of the second base 24, the oil hole of the hydraulic pad 25 and the oil chamber of the hydraulic cylinder 12 are sequentially connected. The processing table and the bases at both ends are fixed with screws or integrally connected. The indexing plate 6 is fixed to the base plate 1 and is used to drive the machining table 2 to rotate, thereby driving the pump body fixing seat 3 and the irregular high-pressure pump 7 on it to rotate around the X-axis. The machine tool can continuously obtain the machining coordinates of the irregular high-pressure pump 7 by detecting the irregular positioning column 5 that moves synchronously with the pump body fixing seat 3. A rotating chuck 26 is fixed on the base plate 1. The machining table 2 is connected between the indexing plate 6 and the rotating chuck 26. The indexing plate 6 is used to drive the machining table 2 to rotate around the X-axis. Both the indexing plate 6 and the rotating chuck 26 are controlled by hydraulic brakes. The hydraulic oil pipe unit 15 includes a first hydraulic brake pipe 152 and a second hydraulic brake pipe 153. The two ends of the first hydraulic brake pipe 152 are respectively connected to the oil inlet interface plate 14 and the indexing plate 6. The two ends of the second hydraulic brake pipe 153 are respectively connected to the oil inlet interface plate 14 and the rotating chuck 26. It also includes a servo motor 27. The servo motor 27 is drivenly connected to the indexing plate 6 to provide rotational power to the indexing plate 6. The first mounting base is mounted on the rotating chuck, and the second mounting base is mounted on the indexing plate; the indexing plate and the rotating chuck are respectively fixed to the base plate by the support base 28.

[0030] Workflow of embodiments of the present invention: 1. Pump body installation and positioning inspection Place the irregularly shaped high-pressure pump to be processed on the pump body mounting base. If the pump body is installed correctly, one first locating pin will extend into the locating hole on the bottom surface of the pump body under the action of a spring, and two second locating pins will be pressed into the locating pin mounting channels by the bottom surface of the pump body. The sensor detects the "one extension and two presses" state, indicating that the installation is qualified, and the tooling enters the processing preparation state. If the pump body is placed incorrectly, all three locating pins will be pressed into the mounting channels. The sensor will detect the "three presses" state and immediately issue a positioning abnormality warning. The operator needs to adjust the position of the pump body until the installation is qualified. The machine tool detects the irregularly shaped positioning column, and based on the adaptation relationship between the positioning column and the pump body machining reference surface, the coordinate origin of the current machining surface is quickly established without the need to readjust the reference.

[0031] 2. Hydraulic clamping Press the machine tool hydraulic oil switch, and the hydraulic oil is delivered along the following path: the hydraulic oil in the inlet interface plate enters the corresponding oil groove of the inlet seat through the first hydraulic oil pipe, and then passes through the corresponding oil circuits of the inlet shaft, the second base, and the machining table in sequence, and enters the oil chamber of the lever hydraulic cylinder through the oil hole of the hydraulic pad plate. Hydraulic oil pushes the piston rod of the hydraulic cylinder to extend, causing the lever seat to swing downward, pressing the pressure plate down toward the pump body until it presses against the top surface of the pump body. After the preset clamping force is reached, the hydraulic system maintains pressure, and the tooling enters the processing state.

[0032] 3. Multi-faceted machining and coordinate preservation According to the processing requirements, the servo motor is started, and the motor drives the indexing plate to rotate around the X-axis. The indexing plate drives the processing table, pump body fixing seat and irregular high-pressure pump to rotate synchronously until the pump body switches to the surface to be processed. At this time, the machine tool detects the irregularly shaped positioning column that rotates synchronously with the pump body fixed seat to continuously obtain the coordinate origin of the current machining surface without the need to readjust the reference.

[0033] 4. Remove the hydraulic clamp and pump body. After all processing steps are completed, press the machine tool hydraulic oil switch again to switch the oil flow direction of the oil inlet plate. The hydraulic oil enters the other corresponding oil groove of the oil inlet seat through the second hydraulic oil pipe, and then passes through the corresponding oil circuits of the oil inlet shaft, the second base, and the processing table in sequence, and enters the oil chamber of the lever hydraulic cylinder through the oil hole of the hydraulic pad plate. Hydraulic oil pushes the cylinder piston rod to retract, causing the lever seat to rotate in the opposite direction, and the pressure plate to lift upward and separate from the top surface of the pump body; Once the pressure plate is fully raised, the operator can remove the finished irregular-shaped high-pressure pump, completing a single processing cycle.

[0034] It should be noted that in the description of this invention, all directional indications (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, in this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A machining fixture for irregularly shaped high-pressure pumps with built-in machining coordinates, characterized in that: Includes a base plate (1), a processing table (2), a pump body mounting base (3), a pump body positioning pin assembly (4), at least two irregularly shaped positioning pins (5), a pump body clamping assembly, and an indexing plate (6). The pump body mounting base (3) is fixed on the processing table (2) and is used to place the irregular high pressure pump (7) to be processed. The pump body positioning pin group (4) includes at least one first positioning pin (41) and a second positioning pin (42). Each positioning pin is movably and telescopically mounted in the corresponding positioning pin mounting channel (31) on the pump body fixed seat (3). The head end of the positioning pin is exposed on the top surface of the pump body fixed seat (3), and the end end abuts against the elastic reset member (8). When the irregular high pressure pump is correctly installed, the first positioning pin (41) extends into the positioning hole on the bottom surface of the irregular high pressure pump (7), and the second positioning pin (42) is pressed into the positioning pin mounting channel (31) by the bottom surface of the irregular high pressure pump (7). Each positioning pin is provided with a sensor (9). The sensor (9) is used to detect the pressing state of the corresponding positioning pin. When all positioning pins are pressed in, a positioning abnormality prompt is issued. At least two irregularly shaped positioning columns (5) are fixed on the two sides of the pump body fixing seat (3), and their shapes are adapted to the machining reference surface of the irregularly shaped high-pressure pump (7) for machine tool inspection to establish and maintain machining coordinates; The pump body clamping assembly is used to clamp or loosen the irregular high-pressure pump (7) on the pump body fixing seat (3). The indexing plate (6) is fixed to the base plate (1) and is used to drive the processing table (2) to rotate, thereby driving the pump body fixing seat (3) and the irregular high pressure pump (7) on it to rotate around the X-axis. The machine tool can continuously obtain the processing coordinates of the irregular high pressure pump (7) by detecting the irregular positioning column (5) that moves synchronously with the pump body fixing seat (3).

2. The machining tooling according to claim 1, characterized in that: The positioning pin mounting channel (31) extends to the bottom surface of the pump body fixing seat (3). The positioning pin and the elastic reset member are installed from the lower end of the positioning pin mounting channel (31). The first fastener (10) is installed at the lower end of the positioning pin mounting channel (31) and supported on the bottom surface of the elastic reset member (8). The pump body fixing seat (3) has a sensor mounting channel (32) on one side corresponding to the positioning pin mounting channel (31), and the sensor mounting channel (32) extends to the bottom surface of the pump body fixing seat (3). The sensor (9) is installed from the lower end of the sensor mounting channel (32). The power line of the sensor (9) passes through the lower end of the sensor mounting channel (32). The outer side wall of the pump body fixing seat (3) has a side hole (33) communicating with the sensor mounting channel. The second fastener (11) is installed in the side hole (33) and abuts against and fixes the sensor (9).

3. The machining tooling according to claim 1, characterized in that: The pump body positioning pin group (4) includes three positioning pins, one of which is the first positioning pin (41) and the other two are the second positioning pins (42).

4. The machining tooling according to claim 1, 2, or 3, characterized in that: The pump body clamping assembly includes a hydraulic cylinder (12), a lever seat (13), an oil inlet plate (14), and a hydraulic oil pipe unit (15). The hydraulic cylinder (12) is mounted on the processing table (2). The lever seat (13) is connected to the piston rod (121) of the hydraulic cylinder (12). A pressure plate (16) is provided on the lever seat (13). The oil inlet plate (14) is connected to the hydraulic cylinder (12) to drive the piston rod of the hydraulic cylinder (12) to extend and retract, thereby causing the pressure plate (16) on the lever seat (13) to press or release the irregular high-pressure pump (7).

5. The machining tooling according to claim 4, characterized in that: The pump body clamping assembly also includes a hinged arm (17), and a support (18) is provided on the outer wall of the hydraulic cylinder (12). The upper end of the hinged arm (17) is hinged to the middle of the lever seat (13), and its lower end is hinged to the support (18). One end of the lever seat (13) is hinged to the piston rod of the hydraulic cylinder (12), and the other end is provided with the pressure plate (16). When the piston rod of the hydraulic cylinder (12) extends and retracts, it drives the lever seat (13) to swing, thereby driving the pressure plate (16) to lift or press down the irregular high-pressure pump (7).

6. The machining tooling according to claim 4, characterized in that: The pump body clamping assembly also includes a rotating oil inlet seat (19) and an oil inlet shaft (20). The hydraulic oil pipe unit (15) has a hydraulic oil pipe (151). The oil inlet shaft (20) passes through the middle of the indexing plate (6) and rotates synchronously with the processing table (2). The oil inlet seat (19), the oil inlet shaft (20) and the processing table (2) all have oil passages inside. The oil inlet interface plate (14) is connected to the oil passage of the oil inlet seat (19) through the hydraulic oil pipe (151). One end of the oil passage of the processing table (2) is connected to the oil passage of the oil inlet seat (19) through the oil inlet shaft (20), and the other end is connected to the oil chamber of the hydraulic cylinder (12).

7. The machining tooling according to claim 6, characterized in that: The hydraulic oil pipe unit (15) has two hydraulic oil pipes (151). The inner wall of the oil inlet seat (19) is provided with two oil grooves (191) in the circumferential direction, and the corresponding oil grooves (191) on its outer circumferential surface are provided with oil inlet holes (192). Each hydraulic oil pipe (151) is connected to the corresponding oil inlet hole (192). The oil inlet shaft (20) has two oil passages inside, and the corresponding oil passages on its outer circumferential surface are provided with oil passage holes (201). The oil inlet seat (19) is sleeved on the outside of the oil inlet shaft (20), and the oil grooves (191) of the oil inlet seat (19) and the oil passage holes (201) of the oil inlet shaft (20) are connected one-to-one. A bearing (22) is provided between the oil inlet seat (19) and the oil inlet shaft (20).

8. The machining tooling according to claim 6, characterized in that: The two ends of the processing table (2) are fixed on the first base (23) and the second base (24) respectively. The second base (24) also has an oil passage. The oil inlet shaft (20) is connected to the second base (24), and the oil passage of the oil inlet shaft (20) is connected to the oil passage of the second base (24). A hydraulic pad (25) is provided between the hydraulic cylinder (12) and the processing table (2). The hydraulic pad (25) has an oil hole inside. The oil passage of the second base (24), the oil hole of the hydraulic pad (25), and the oil chamber of the hydraulic cylinder (12) are connected in sequence.

9. The machining fixture according to claim 4, characterized in that: A rotating chuck (26) is fixed on the base plate (1). The processing table (2) is connected between the indexing plate (6) and the rotating chuck (26). The indexing plate (6) is used to drive the processing table (2) to rotate around the X-axis. Both the indexing plate (6) and the rotating chuck (26) are controlled by hydraulic brakes. The hydraulic oil pipe unit (15) includes a first hydraulic brake pipe (152) and a second hydraulic brake pipe (153). The first hydraulic brake pipe (152) is connected to the oil inlet interface plate (14) and the indexing plate (6) at both ends, and the second hydraulic brake pipe (153) is connected to the oil inlet interface plate (14) and the rotating chuck (26) at both ends.

10. The machining fixture according to claim 9, characterized in that: It also includes a servo motor (27), which is connected to the indexing plate (6) to provide rotational power to the indexing plate (6).

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