Processing tooling of special-shaped high-pressure pump with processing coordinates

Abstract

The present application relates to a kind of special-shaped high-pressure pump machining tool with machining coordinates, including bottom plate, processing platform, pump body fixing seat, pump body positioning pin group, at least two special-shaped positioning columns, pump body compression assembly and index plate, pump body fixing seat is used to place the special-shaped high-pressure pump to be processed;Pump body positioning pin group contains first positioning pin and second positioning pin, each positioning pin can be movably telescopic in the positioning pin installation channel of pump body fixing seat, and abuts elastic reset member, each positioning pin side is provided with sensor, detects pressing state;At least two special-shaped positioning columns are fixed on the both sides of pump body fixing seat, and the shape is adapted to the machining reference surface of pump body, for machine detection to establish and keep machining coordinates;Pump body compression assembly is used to compress or loosen pump body;Index plate is fixed on bottom plate, drives processing platform to rotate, drives pump body fixing seat and pump body to rotate around X axis.Solve the problem of "special-shaped coordinate positioning difficult, multi-surface machining coordinates easy to lose accuracy" when special-shaped high-pressure pump is machined.

Description

Technical Field

[0001] This invention relates to the field of high-pressure pump processing equipment technology, and in particular to a special-shaped high-pressure pump processing fixture with built-in processing coordinates. Background Technology

[0002] In the machining of irregularly shaped high-pressure pumps, traditional machining fixtures have significant drawbacks due to their irregular shape and lack of a unified reference surface. On the one hand, manual tool setting is required to establish machining coordinates, which is cumbersome and prone to introducing errors, resulting in low positioning accuracy. On the other hand, tool setting needs to be redone when switching machining surfaces, which is not only time-consuming but also easily leads to inconsistent machining references on different surfaces, affecting the overall accuracy of the product. Existing technologies have not designed a complete solution for "irregular positioning + multi-face machining collaboration" and cannot simultaneously meet the requirements of rapid coordinate establishment and stable maintenance. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art by providing a machining fixture for irregularly shaped high-pressure pumps with built-in machining coordinates, which solves the problems of "difficulty in positioning irregularly shaped coordinates and easy inaccuracy of multi-faceted machining coordinates" during the machining of irregularly shaped high-pressure pumps.

[0004] The technical solution of the present invention: A machining fixture for an irregular high-pressure pump with built-in machining coordinates, including a base plate, a machining table, a pump body fixing seat, a pump body positioning pin group, at least two irregular positioning columns, a pump body clamping assembly, and an indexing plate;

[0005] The pump body mounting base is fixed to the processing table and is used to place the irregular high-pressure pump to be processed;

[0006] The pump body positioning pin assembly includes at least one first positioning pin and a second positioning pin. Each positioning pin is movably and telescopically mounted in a corresponding positioning pin mounting channel on the pump body fixing seat. The head end of the positioning pin protrudes from the top surface of the pump body fixing seat, and the end abuts against the elastic reset member. When the irregular high-pressure pump is correctly installed, the first positioning pin extends into the positioning hole on the bottom surface of the irregular high-pressure pump, and the second positioning pin is pressed into the positioning pin mounting channel by the bottom surface of the irregular high-pressure pump. Each positioning pin is equipped with a sensor, which 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.

[0007] At least two irregularly shaped positioning pins are fixed on both sides of the pump body mounting base. Their shape is adapted to the machining reference surface of the irregularly shaped high-pressure pump and is used for machine tool inspection to establish and maintain machining coordinates.

[0008] The pump body clamping assembly is used to clamp or loosen the irregular high-pressure pump on the pump body mounting base;

[0009] The index plate is fixed to the base plate and used to drive the machining table plate to rotate, thereby driving the pump body fixing seat and the special-shaped high-pressure pump thereon to rotate around the X axis, and the machine tool can continuously obtain the machining coordinates of the special-shaped high-pressure pump by detecting the special-shaped positioning column that moves synchronously with the pump body fixing seat.

[0010] By adopting the technical scheme, the present application has the following beneficial effects:

[0011] 1. By the combined design of the "pump body positioning pin group + sensor", the installation state of the special-shaped high-pressure pump can be automatically detected, when the special-shaped high-pressure pump is correctly installed, the first positioning pin extends into the positioning hole, and the second positioning pin is pressed in, and the sensor will only allow the machining to start after detecting that each positioning pin is in the correct position, and when the pump body is placed incorrectly to cause all the positioning pins to be pressed in, the positioning pins are not pressed correctly, and the sensor sends an abnormal prompt, effectively avoiding the machining error caused by installation deviation, significantly improving the positioning accuracy, and avoiding the problems of human error and incorrect installation from the source.

[0012] 2. With the aid of the at least two special-shaped positioning columns that are adapted to the pump body machining reference surface, the machine tool can quickly establish the machining coordinates by detecting the special-shaped positioning column, and when the index plate drives the machining table plate to drive the special-shaped high-pressure pump to rotate around the X axis to switch the machining surface, the machine tool can still stably maintain the machining coordinates by continuously detecting the special-shaped positioning column, without the need to re-set the tool, solving the problem of coordinate misalignment during multi-surface machining, ensuring the uniformity of the machining reference of each surface, and thereby improving the overall machining precision of the product.

[0013] 3. The index plate drives the machining table plate to rotate around the X axis, thereby driving the pump body to switch the machining surface, without the need to frequently disassemble and assemble the tooling, greatly improving the efficiency of multi-surface machining of the special-shaped high-pressure pump, and at the same time, cooperating with the coordinate maintaining function of the special-shaped positioning column to ensure the consistency of each batch of pump body machining.

[0014] Further settings of the present application: the positioning pin installation channel penetrates to the bottom surface of the pump body fixing seat, the positioning pin and the elastic return member are installed from the lower end of the positioning pin installation channel, and the first fastener is installed at the lower end of the positioning pin installation channel and supported on the bottom surface of the elastic return member; a sensor installation channel is formed on one side of the pump body fixing seat corresponding to the positioning pin installation channel, and the sensor installation channel penetrates to the bottom surface of the pump body fixing seat, the sensor is installed from the lower end of the sensor installation channel, and the power line of the sensor is led out from the lower end of the sensor installation channel, a side hole is formed on the outer side wall of the pump body fixing seat and communicates with the sensor installation channel, and the second fastener is installed in the side hole and abuts against and fixes the sensor.

[0015] With the further arrangement, the installation of the positioning pin and the elastic reset member is more convenient and stable, the first fastener is used to install and support the bottom surface of the elastic reset member from the lower end of the positioning pin installation channel, so that the stability and reliability of the positioning pin during work are ensured, meanwhile, the installation of the sensor is facilitated by the sensor installation channel, the sensor is installed from the lower end of the sensor installation channel, and the power line is led out from the lower end, so that the arrangement and connection of the line are facilitated, and the side hole communicated with the sensor installation channel is arranged on the outer side wall of the pump body fixing seat, the second fastener is used to abut and fix the sensor, so that the installation of the sensor is further ensured to be firm, and the sensor will not be loose or displaced during work, so that the performance and stability of the entire special-shaped high-pressure pump machining tool are improved.

[0016] The further arrangement of the present application is that the pump body positioning pin group comprises three positioning pins, one of which is a first positioning pin, and the other two are second positioning pins.

[0017] With the further arrangement, the pump body positioning pin group is combined as "1 first positioning pin + 2 second positioning pins", which can more accurately adapt to the bottom surface structure of the special-shaped high-pressure pump, and even if there is a slight size deviation of the pump body, the positioning logic of "one insertion and two pressing" can ensure that the installation position is unique, further reducing the installation error and improving the positioning accuracy.

[0018] The further arrangement of the present application is that the pump body pressing assembly comprises a hydraulic oil cylinder, a lever seat, an oil inlet interface plate and a hydraulic oil pipe unit, the hydraulic oil cylinder is arranged on the machining table plate, the lever seat is connected to the piston rod of the hydraulic oil cylinder, a pressing plate is arranged on the lever seat, the oil inlet interface plate is communicated with the hydraulic oil cylinder to drive the piston rod of the hydraulic oil cylinder to extend and retract, so that the pressing plate on the lever seat presses or releases the special-shaped high-pressure pump.

[0019] With the further arrangement, the hydraulic oil cylinder controls the extension and retraction of the piston rod through the oil flow direction control of the oil inlet interface plate, drives the pressing plate on the lever seat to press or release the pump body, compared with the manual pressing mode, the hydraulic driving force is stable and adjustable, the pressing force can be accurately controlled according to the pump body material and machining requirements, the machining displacement caused by insufficient pressing force or the deformation of the pump body caused by excessive pressing force is avoided. The hydraulic driving structure has high automation degree, and manual operation of the pressing plate is not required, which is combined with the automatic machining process of the machine tool to realize the semi-automatic connection of "clamping-machining-unclamping", and the overall machining efficiency is improved.

[0020] Further, the pump body compression assembly further comprises a hinged arm, a support is arranged 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 the lower end of the hinged arm 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 of the lever seat is provided with the pressing plate, and when the piston rod of the hydraulic cylinder is extended or retracted, the lever seat is driven to swing, and then the pressing plate is lifted or pressed on the special-shaped high-pressure pump.

[0021] With the further arrangement, the hinged arm connects the lever seat and the support on the outer wall of the hydraulic cylinder, forming a lever structure of "piston rod extension-revolve of lever seat around the hinge point", compared with the design of directly pushing the pressing plate, the hydraulic driving force can be amplified through the lever, a smaller cylinder stroke can achieve a larger pressing plate pressure, the cylinder size is reduced, and the pressing plate pressing / lifting action is more stable, and the uneven stress on the pump body is avoided.

[0022] Further, the pump body compression assembly further comprises a hinged arm, a support is arranged 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 the lower end of the hinged arm 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 of the lever seat is provided with the pressing plate, and when the piston rod of the hydraulic cylinder is extended or retracted, the lever seat is driven to swing, and then the pressing plate is lifted or pressed on the special-shaped high-pressure pump.

[0023] With the further arrangement, the hinged arm connects the lever seat and the support on the outer wall of the hydraulic cylinder, forming a lever structure of "piston rod extension-revolve of lever seat around the hinge point", compared with the design of directly pushing the pressing plate, the hydraulic driving force can be amplified through the lever, a smaller cylinder stroke can achieve a larger pressing plate pressure, the cylinder size is reduced, and the pressing plate pressing / lifting action is more stable, and the uneven stress on the pump body is avoided.

[0024] Further, the hydraulic oil pipe unit has two hydraulic oil pipes, two oil grooves are arranged on the inner wall of the oil inlet seat in the circumferential direction, oil inlet holes are arranged on the outer circumferential surface of the oil inlet seat corresponding to the oil grooves, each hydraulic oil pipe is connected with a corresponding oil inlet hole, the oil inlet shaft has two oil channels in the inside, and oil passing holes are arranged on the outer circumferential surface of the oil inlet shaft corresponding to the oil channels, the oil inlet seat is arranged on the outside of the oil inlet shaft, the oil grooves of the oil inlet seat and the oil passing holes of the oil inlet shaft are in one-to-one correspondence and are communicated, and a bearing is arranged between the oil inlet seat and the oil inlet shaft.

[0025] With the further setting, two hydraulic oil pipes correspond to two oil grooves of the oil inlet seat and two oil paths of the oil inlet shaft, realizing independent delivery of hydraulic oil "one in and one out", accurately controlling the extension direction of the hydraulic cylinder piston rod, avoiding action delay or misoperation caused by single oil pipe design, ensuring smooth switching of the pressing plate pressing and loosening, and ensuring the continuity and stability of the hydraulic system work.

[0026] The further setting of the application is that the two ends of the machining table plate are fixed on the first and second bases respectively, the second base has an oil path inside, the oil inlet shaft is connected with the second base and communicates with the oil path of the second base, a hydraulic cushion plate is arranged between the hydraulic cylinder and the machining table plate, the hydraulic cushion plate has an oil hole inside, and the oil path of the second base, the oil hole of the hydraulic cushion plate and the oil cavity of the hydraulic cylinder are sequentially communicated.

[0027] With the further setting, the second base oil path, the hydraulic cushion plate oil hole and the oil cavity of the oil cylinder are sequentially communicated, the hydraulic cushion plate not only buffers the pressure of the oil cylinder, but also accurately docks the oil path through the oil hole, avoids pressure loss caused by direct communication of the oil path, and facilitates the installation and positioning between the oil cylinder and the machining table plate, and reduces the oil path docking deviation.

[0028] The further setting of the application is that a rotating chuck is fixed on the bottom plate, the machining table plate is connected between the index plate and the rotating chuck, the index plate is used to drive the machining table plate to rotate around the X axis, the index plate and the rotating chuck are controlled by oil brakes, the hydraulic oil pipe unit includes a first oil brake pipe and a second oil brake pipe, the two ends of the first oil brake pipe are connected with the oil inlet interface plate and the index plate respectively, and the two ends of the second oil brake pipe are connected with the oil inlet interface plate and the rotating chuck respectively.

[0029] With the further setting, the index plate and the rotating chuck are controlled by oil brakes, and unified liquid supply is provided from the oil inlet interface plate through the first and second oil brake pipes, the brake responds quickly and the braking force is stable, the table plate is prevented from accidental rotation during machining, and the oil path system is simplified and the occupied space of the independent oil brake liquid supply device is reduced.

[0030] The further setting of the application is that a servo motor is further included, the servo motor is in transmission connection with the index plate to provide rotating power to the index plate.

[0031] With the further setting, the servo motor provides stable power to the index plate, compared with ordinary motors, the servo motor has controllable rotating speed and high positioning accuracy, can accurately control the rotating angle of the index plate, ensures that the angle deviation of the pump body when switching the machining surface each time is within the allowable range, and improves the position accuracy of multi-surface machining. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 Structure diagram of specific embodiment of the present application;

[0033] Figure 2 Internal structure diagram of specific embodiment of the present application;

[0034] Figure 3 Structure diagram of pump body fixing seat of specific embodiment of the present application;

[0035] Figure 4 Bottom surface structure diagram of pump body fixing seat of specific embodiment of the present application;

[0036] Figure 5 Internal structure diagram of pump body fixing seat of specific embodiment of the present application;

[0037] Figure 6 Internal structure diagram of pump body fixing seat of specific embodiment of the present application;

[0038] Figure 7 Drive diagram of pressing plate of specific embodiment of the present application;

[0039] Figure 8 Assembly diagram of oil inlet seat and oil inlet shaft of specific embodiment of the present application;

[0040] Figure 9 Internal structure diagram of oil inlet seat and oil inlet shaft of specific embodiment of the present application;

[0041] Figure 10 Structure diagram of oil inlet seat of specific embodiment of the present application.

[0042] In the figure: bottom plate 1, processing table plate 2, pump body fixing seat 3, pump body positioning pin group 4, first positioning pin 41, second positioning pin 42, positioning pin installation channel 31, special-shaped positioning column 5, protractor 6, special-shaped high-pressure pump 7, elastic reset part 8, sensor 9, first fastener 10, sensor installation channel 32, side hole 33, second fastener 11, hydraulic oil cylinder 12, piston rod 121, lever seat 13, oil inlet interface plate 14, hydraulic oil pipe unit 15, pressing plate 16, hinged arm 17, support 18, oil inlet seat 19, oil inlet shaft 20, hydraulic oil pipe 151, oil groove 191, oil inlet hole 192, oil passing hole 201, bearing 22, first pedestal 23, second pedestal 24, hydraulic pad plate 25, rotating chuck 26, first oil brake pipe 152, second oil brake pipe 153, servo motor 27, support pedestal 28. DETAILED DESCRIPTION

[0043] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0044] As shown in Figures 1-10 The present application is a special-shaped high-pressure pump machining tool with machining coordinates, which comprises a base plate 1, a machining table plate 2, a pump body fixing seat 3, a pump body positioning pin group 4, at least two special-shaped positioning columns 5, a pump body pressing assembly, and a protractor 6.

[0045] The pump body fixing seat 3 is fixedly installed on the machining table plate 2 by screws or bolts, and is used for placing a special-shaped high-pressure pump 7 to be machined.

[0046] The pump body positioning pin group 4 comprises at least one first positioning pin 41 and one second positioning pin 42. Each positioning pin is movably installed in a corresponding positioning pin installation channel 31 on the pump body fixing seat 3. The head end of the positioning pin is exposed to the top surface of the pump body fixing seat 3, and the tail end abuts against an elastic reset member 8. When the special-shaped high-pressure pump is correctly installed, the first positioning pin 41 extends into a positioning hole in the bottom surface of the special-shaped high-pressure pump 7, and the second positioning pin 42 is pressed into the positioning pin installation channel 31 by the bottom surface of the special-shaped high-pressure pump 7. Sensors 9 are arranged on the sides of each positioning pin. The sensors can be displacement sensors or optical sensors. The sensors 9 are used to detect the pressing state of the corresponding positioning pin, and issue an abnormal positioning prompt when each positioning pin is pressed. The positioning pin installation channel 31 penetrates to the bottom surface of the pump body fixing seat 3. The positioning pin and the elastic reset member are installed at the lower end of the positioning pin installation channel 31. A first fastener 10 is installed at the lower end of the positioning pin installation channel 31 and supports the bottom surface of the elastic reset member 8. The elastic reset member is a spring. A sensor installation channel 32 is formed in the side of the pump body fixing seat 3 corresponding to the positioning pin installation channel 31, and penetrates to the bottom surface of the pump body fixing seat 3. The sensor 9 is installed at the lower end of the sensor installation channel 32. The power line of the sensor 9 is led out from the lower end of the sensor installation channel 32. A side hole 33 is formed in the outer side wall of the pump body fixing seat 3 and communicates with the sensor installation channel. A second fastener 11 is installed in the side hole 33 and abuts against and fixes the sensor 9. The fastener is a screw, a bolt, or a pin.

[0047] The at least two special-shaped positioning columns 5 are fixed to the two side surfaces of the pump body fixing seat 3. The shape of the special-shaped positioning column is adapted to the machining reference surface of the special-shaped high-pressure pump 7, and is used for machine detection to establish and maintain machining coordinates.

[0048] The pump body pressing assembly is used for pressing or loosening the special-shaped high-pressure pump 7 on the pump body fixing seat 3, and comprises a hydraulic oil cylinder 12, a lever seat 13, an oil inlet interface plate 14 and a hydraulic oil pipe unit 15. The hydraulic oil cylinder 12 is arranged on the machining table plate 2, the lever seat 13 is connected to the piston rod 121 of the hydraulic oil cylinder 12, and the lever seat 13 is provided with a pressing plate 16. The oil inlet interface plate 14 is communicated with the hydraulic oil cylinder 12 to drive the piston rod of the hydraulic oil cylinder 12 to extend and retract, so as to press or loosen the special-shaped high-pressure pump 7 on the pressing plate 16 of the lever seat 13. The pump body pressing assembly further comprises a hinged arm 17. The outer wall of the hydraulic oil cylinder 12 is fixedly provided or integrally provided with a support 18. The upper end of the hinged arm 17 is hinged to the middle part of the lever seat 13 through a hinge shaft, and the lower end of the hinged arm 17 is hinged to the support 18 through a hinge shaft. One end of the lever seat 13 is hinged to the piston rod of the hydraulic oil cylinder 12 through a hinge shaft, and the other end of the lever seat 13 is provided with the pressing plate 16. When the piston rod of the hydraulic oil cylinder 12 extends and retracts, the lever seat 13 is driven to swing, and the pressing plate 16 is lifted or pressed to the special-shaped high-pressure pump 7. The pump body pressing assembly further comprises a rotatingly matched 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 bottom plate. The oil inlet shaft 20 is arranged in the middle part of the indexing disc 6 and rotates synchronously with the machining table plate 2. The oil inlet seat 19, the oil inlet shaft 20 and the machining table plate 2 all have oil channels. The oil inlet interface plate 14 is connected to the oil channel of the oil inlet seat 19 through the hydraulic oil pipe 151. One end of the oil channel of the machining table plate 2 is communicated with the oil channel of the oil inlet seat 19 through the oil inlet shaft 20, and the other end of the oil channel of the machining table plate 2 is communicated with the oil cavity of the hydraulic oil cylinder 12. The hydraulic oil pipe unit 15 has two hydraulic oil pipes 151. Two oil grooves 191 are circumferentially arranged on the inner wall of the oil inlet seat 19. Oil inlet holes 192 are arranged on the outer circumferential surface of the oil inlet seat 19 corresponding to the oil grooves 191. Each hydraulic oil pipe 151 is connected to a corresponding oil inlet hole 192. The oil inlet shaft 20 has two oil channels in the inside, and oil passing holes 201 are arranged on the outer circumferential surface of the oil inlet shaft 20 corresponding to the oil channels. The oil inlet seat 19 is arranged outside the oil inlet shaft 20, and the oil grooves 191 of the oil inlet seat 19 are communicated with the oil passing holes 201 of the oil inlet shaft 20 one by one. A bearing 22 is arranged between the oil inlet seat 19 and the oil inlet shaft 20, and an O-shaped sealing ring is further arranged between the oil inlet seat 19 and the oil inlet shaft 20. The two ends of the machining table plate 2 are respectively fixed to the first pedestal 23 and the second pedestal 24. The second pedestal 24 has an oil channel in the inside. The oil inlet shaft 20 is connected to the second pedestal 24, and the oil channel of the oil inlet shaft 20 is communicated with the oil channel of the second pedestal 24. A hydraulic pad 25 is arranged between the hydraulic oil cylinder 12 and the machining table plate 2, and O-shaped sealing rings are arranged between the hydraulic pad and the machining table plate and the hydraulic oil cylinder respectively. The hydraulic pad 25 has an oil hole in the inside. The oil channel of the second pedestal 24, the oil hole of the hydraulic pad 25 and the oil cavity of the hydraulic oil cylinder 12 are sequentially communicated. The machining table plate and the pedestals at the two ends are fixed by screws or integrally connected.

[0049] The index plate 6 is fixed to the bottom plate 1 and used to drive the machining table plate 2 to rotate, thereby driving the pump body fixing seat 3 and the special-shaped high-pressure pump 7 thereon to rotate around the X axis; the machine tool can continuously obtain the machining coordinates of the special-shaped high-pressure pump 7 by detecting the special-shaped positioning column 5 which moves synchronously with the pump body fixing seat 3; the bottom plate 1 is fixed with a rotating chuck 26, the machining table plate 2 is connected between the index plate 6 and the rotating chuck 26, the index plate 6 is used to drive the machining table plate 2 to rotate around the X axis, and the index plate 6 and the rotating chuck 26 are both controlled by oil brakes, the hydraulic oil pipe unit 15 comprises a first oil brake pipe 152 and a second oil brake pipe 153, the two ends of the first oil brake pipe 152 are respectively connected with the oil inlet interface plate 14 and the index plate 6, the two ends of the second oil brake pipe 153 are respectively connected with the oil inlet interface plate 14 and the rotating chuck 26, and the hydraulic oil pipe unit 15 further comprises a servo motor 27, the servo motor 27 is in transmission connection with the index plate 6 to provide rotating power for the index plate 6. The first seat is clamped on the rotating chuck, and the second seat is clamped on the index plate; the index plate and the rotating chuck are fixed to the bottom plate through the support seat 28.

[0050] The working process of the embodiment of the present application is as follows:

[0051] 1. Pump body installation and positioning detection

[0052] The special-shaped high-pressure pump to be machined is placed on the pump body fixing seat, if the pump body is installed correctly, a first positioning pin is extended into a positioning hole in the bottom surface of the pump body under the action of a spring, and two second positioning pins are pressed into positioning pin installation channels in the bottom surface of the pump body, the sensor detects the state of "one extension and two pressing", and determines that the installation is qualified, and the tooling enters the machining preparation state; if the pump body is placed incorrectly, the three positioning pins are all pressed into the installation channels, the sensor detects the state of "three pressing", and immediately issues a positioning abnormality prompt, and the operator needs to adjust the position of the pump body until the installation is qualified.

[0053] The machine tool detects the special-shaped positioning column, and based on the fitting relationship between the positioning column and the pump body machining reference surface, the coordinate origin of the current machining surface is quickly established, and there is no need to re-adjust the reference.

[0054] 2. Hydraulic pressing

[0055] The hydraulic oil switch of the machine tool is pressed, and the hydraulic oil is transported along the following path: the hydraulic oil of the oil inlet interface plate enters a corresponding oil groove of the oil inlet seat through the first hydraulic oil pipe, then passes through the oil inlet shaft, the second seat and the corresponding oil way of the machining table plate in sequence, and finally enters the oil cavity of the lever hydraulic cylinder through the oil hole of the hydraulic pad.

[0056] The hydraulic oil pushes the piston rod of the hydraulic cylinder to extend, drives the lever seat to swing downward, and makes the pressing plate downwardly press toward the pump body until the top surface of the pump body is pressed tightly, after reaching the preset pressing force, the hydraulic system maintains pressure, and the tooling enters the machining state.

[0057] 3. Multi-surface machining and coordinate keeping

[0058] According to the machining requirement, the servo motor is started, the motor drives the index plate to rotate around the X axis, the index plate drives the machining table plate, the pump body fixing seat and the special-shaped high-pressure pump to rotate synchronously, and the pump body is switched to the surface to be machined;

[0059] At this time, the machine tool detects the special-shaped positioning column rotating synchronously with the pump body fixing seat to continuously obtain the coordinate origin of the current machining surface, without the need to re-adjust the reference.

[0060] 4. Hydraulic loosening and pump body removal

[0061] After all the machining processes are completed, the machine tool hydraulic oil switch is pressed again, the oil flow direction of the oil inlet interface plate is switched, the hydraulic oil enters another corresponding oil groove of the oil inlet seat through the second hydraulic oil pipe, and then sequentially passes through the corresponding oil way of the oil inlet shaft, the second seat and the machining table plate, and enters the oil cavity of the lever hydraulic oil cylinder through the oil hole of the hydraulic pad plate;

[0062] The hydraulic oil pushes the oil cylinder piston rod to retract, drives the lever seat to rotate reversely, and lifts the pressing plate upward to separate from the top surface of the pump body.

[0063] After the pressing plate is completely lifted, the operator can remove the machining completed special-shaped high-pressure pump, and completes the single machining cycle.

[0064] It should be noted that in the description of the present application, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, motion condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications will also change accordingly.

[0065] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. In the description of the present application, the meaning of "several" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0066] In the description of the present application, unless otherwise specifically specified and limited, the terms "mounting", "connecting", "coupling", "connecting", "fixing" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to 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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