CN112393698B - Oil plug detection method - Google Patents
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- CN112393698B CN112393698B CN201910757101.6A CN201910757101A CN112393698B CN 112393698 B CN112393698 B CN 112393698B CN 201910757101 A CN201910757101 A CN 201910757101A CN 112393698 B CN112393698 B CN 112393698B
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Abstract
The invention provides an oil plug detection method. The detection method includes step S1: grinding the oil plug rod and the oil plug cylinder; step S2: mounting the oil plug rod and the oil plug cylinder on a detection platform, and enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at a fixed frequency; step S3: detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer; step S4: comparing the measured sound decibel value with the standard decibel interval, if the sound decibel value is smaller than the standard decibel interval, returning to the step S1, if the sound decibel value is larger than the standard decibel interval, the oil plug rod and the oil plug cylinder are unqualified in detection, and going to the step S6; step S5: if the sound decibel value is within the standard decibel interval, the oil plug rod and the oil plug cylinder are detected to be qualified; step S6: and finishing the detection. The oil plug detection method provided by the invention can be used for rapidly and effectively detecting whether the oil plug is qualified or not, the production efficiency of the oil plug is improved, and the production cost of the oil plug is reduced.
Description
Technical Field
The invention belongs to the field of detection of parts of aero-engines, and particularly relates to a method for detecting an oil plug of a fuel nozzle of an aero-engine.
Background
With the increasingly developed aviation industry, especially in the next decades, a large number of aviation airplanes and engines are pushed to the market, so that people can go out daily. The increase of the number of aviation airplanes and aviation engines puts more requirements on the environment and the travel safety. For aero engines, people pay more attention to the comprehensive performance of the fuel nozzle in the combustion chamber, such as pre-swirl assisted fuel atomization, fuel nozzle cooling, fuel anti-coking, low harmful combustion emission and the like. Thanks to the development and application of additive manufacturing techniques, it is now possible to design and manufacture fuel nozzles with multiple functions in one piece. However, the introduction of a new technology also brings huge challenges to the conventional machining, and especially, the machining requirements on precise and fine key parts are higher and higher, for example, a fuel nozzle designed based on an additive manufacturing technology requires that a main oil circuit and an auxiliary oil circuit can be accurately switched in a short time under different fuel pressures, the requirements on valve sealing and opening and closing sensitivity of the oil circuits are extremely high, and the key parts in the current oil circuit valve are oil plugs playing a sealing role.
Fig. 1 shows a schematic diagram of the operation of a prior art oil plug. As shown, the oil dam 100 switches between a closed state a on the left side and an open state B on the right side during operation. The oil plug 100 for controlling the opening and closing of the oil passage is mainly composed of an oil plug rod 101, an oil plug cylinder 201 and a spring 301. The basic operating principle is that when fuel is initially supplied, the oil pressure 401 acts on the plug cylinder 201 in the direction of arrow F, moving the plug cylinder 201 downwards. When the force generated by the oil pressure 401 is larger than the elastic force of the spring 301, the spring 301 is compressed by compression deformation, the oil plug cylinder 201 moves downwards, when the inner pipeline 102 on the oil plug rod 101 is exposed, the oil path is opened, the fuel can enter the fuel nozzle through the inner pipeline 102, and the nozzle fuel supply oil path is opened. When the oil pressure 401 is reduced, the elastic force generated by the recovery deformation of the spring 301 is larger than the downward pressure of the oil pressure 401 on the oil plug cylinder 201, at the moment, the oil plug cylinder 201 moves upwards and is switched from the opening state B to the closing state A, when the oil plug cylinder 201 just blocks the internal pipeline 102, the fuel cannot flow into the fuel nozzle, and the fuel supply oil path of the nozzle is closed.
According to the working principle of the oil plug, the size of the fit clearance between the oil plug rod 101 and the oil plug cylinder 201 directly influences the oil supply stability of the fuel nozzle, if the clearance between the oil plug rod 101 and the oil plug cylinder 201 is too large, no sealing effect exists between the oil plug rod 101 and the oil plug cylinder 201, and fuel can directly flow into the internal pipeline 102 through the clearance, so that the fuel nozzle cannot normally work; if the clearance between the oil plug rod 101 and the oil plug cylinder 201 is too small, the oil supply path cannot be opened when the oil pressure 401 reaches the path opening pressure, and the fuel nozzle cannot work normally.
In fact, the minimum clearance between the oil plug rod 101 and the oil plug cylinder 201 is required to be in the submicron level, the processing of the level is extremely difficult, the manual grinding is mainly relied on at present, and the detection after the processing is also very costly. These factors all restrict the mass production of the fuel plug 100 at a later stage, limit the delivery number of the fuel injectors associated therewith, and affect the efficiency of the engine and the overall competitiveness of the product.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In order to achieve the purpose and improve the yield of the oil plug, the invention provides an oil plug detection method, which comprises the following steps:
step S1: grinding the oil plug rod and the oil plug cylinder;
step S2: mounting the oil plug rod and the oil plug cylinder on a detection platform, and enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at a fixed frequency;
step S3: detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer;
step S4: comparing the measured sound decibel value with a standard decibel interval, if the sound decibel value is smaller than the standard decibel interval, returning to the step S1, if the sound decibel value is larger than the standard decibel interval, the oil plug rod and the oil plug cylinder are unqualified in detection, and going to the step S6;
step S5: if the sound decibel value is within the standard decibel interval, the oil plug rod and the oil plug cylinder are detected to be qualified;
step S6: and finishing the detection.
In an embodiment of the present invention, in step S1, the grinding material is uniformly applied to the joint of the oil plug rod and the oil plug cylinder.
In an embodiment of the present invention, in step S1, the matched grinding is performed manually.
In an embodiment of the invention, in step S2, the fixed frequency is 0Hz to 5 Hz.
In an embodiment of the present invention, the step of obtaining the standard decibel interval includes:
step T11: taking 1 pair out of n1 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n1 is an integer greater than or equal to 2;
step T12: assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder until the debugging requirements are met;
step T13: installing the oil plug rod and the oil plug cylinder which meet debugging requirements on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and determining the sound decibel value as a standard value;
step T14, if no new oil plug rod and oil plug cylinder exist, the step T16 is executed;
step T15, go to step T11;
and T16, forming the standard value interval by a plurality of standard values.
In an embodiment of the present invention, the step of obtaining the standard decibel interval includes:
step T21: taking 1 pair out of n2 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n2 is an integer greater than 0;
step T22: assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder;
step T23: installing the oil plug rod and the oil plug cylinder which meet debugging requirements on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and determining the sound decibel value as a standard value;
step T24, after the oil plug rod and the oil plug cylinder are continuously ground for a set time, the ground oil plug rod and the ground oil plug cylinder are assembled in an oil way, and if the debugging requirements can be met, the step T23 is carried out;
step T25, if no new oil plug rod and oil plug cylinder exist, the step T27 is executed;
step T26, go to step T21;
and T27, forming the standard value interval by a plurality of standard values.
In an embodiment of the present invention, the step of obtaining the standard decibel interval includes:
step T31: taking 1 pair out of n3 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n3 is an integer greater than 0;
step T32: assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder;
step T33: installing the oil plug rod and the oil plug cylinder which meet debugging requirements on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and determining the sound decibel value as a standard value;
step T34, after the oil plug rod and the oil plug cylinder are continuously ground for a set time, the oil plug rod and the oil plug cylinder are installed on the detection platform, the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at the fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the sound decibel value is recorded as a recorded value;
step T35, the ground oil plug rod and the oil plug cylinder are assembled in an oil way, if the oil plug rod and the oil plug cylinder can meet the debugging requirement, the recorded value is converted into a standard value, and the step T34 is carried out;
step T36, if no new oil plug rod and oil plug cylinder exist, the step T37 is executed, otherwise, the step T31 is executed;
and T37, forming the standard value interval by a plurality of standard values.
In an embodiment of the present invention, after the standard value interval is formed, the following steps are performed:
step V1, taking 1 pair out of n4 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n4 is an integer larger than 0;
step V2: mounting the ground oil plug rod and the oil plug cylinder on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and recording the sound decibel value to form a recorded value;
step V3, if the recorded value is smaller than or falls within the range of the standard value interval, continuing to grind the oil plug rod and the oil plug cylinder, and turning to step V2; if the recorded value is larger than the standard value interval, turning to step V4;
step V4, the ground oil plug rod and the oil plug cylinder are assembled in an oil way, if the oil plug rod and the oil plug cylinder can meet the debugging requirement, the recorded value is converted into a standard value, and the range of the standard value interval is modified;
step V5, if no new oil plug rod and oil plug cylinder exist, the step V7 is executed;
step V6, go to step V1;
and step V7, finishing the range modification of the standard value interval.
In an embodiment of the present invention, the maximum value and the minimum value of the plurality of standard values are taken to form the standard value interval.
According to the oil plug detection method provided by the invention, whether the oil plug is qualified or not can be quickly and effectively detected, so that the production efficiency of the oil plug is improved, and the production cost of the oil plug is reduced.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:
fig. 1 shows a schematic diagram of the operation of a prior art oil plug.
Fig. 2 shows a schematic flow chart of the oil plug detection method provided by the present invention.
Fig. 3 shows a first schematic flow chart of obtaining a standard value interval in the oil plug detection method provided by the invention.
Fig. 4 shows a schematic flow chart ii for obtaining a standard value interval in the oil plug detection method provided by the present invention.
Fig. 5 shows a third schematic flow chart of the method for detecting an oil plug according to the present invention, wherein the third schematic flow chart is used for obtaining a standard value interval.
Fig. 6 shows a schematic flow chart of the extended standard value interval in the oil plug detection method provided by the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.
Fig. 2 shows a schematic flow chart of the oil plug detection method provided by the present invention. As shown, a method 200 for detecting an oil plug includes the steps of:
step S1: grinding the oil plug rod and the oil plug cylinder. Here, grinding is equivalent to grinding, and means a processing method of removing an unnecessary material on a workpiece by using an abrasive or a grinding tool.
Step S2: the oil plug rod and the oil plug cylinder are arranged on the detection platform, so that the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at a fixed frequency, and the oil plug rod and the oil plug cylinder generate sound due to friction and impact.
Step S3: and detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer.
Step S4: comparing the measured sound decibel value with the standard decibel interval, if the sound decibel value is smaller than the standard decibel interval, returning to the step S1, and continuing to grind; if the sound decibel value is greater than the standard decibel interval, the detection of the oil plug rod and the oil plug cylinder is not qualified, the oil plug rod and the oil plug cylinder are treated as a waste report, and the step S6 is carried out.
Step S5: and if the sound decibel value is within the standard decibel interval, the detected oil plug rod and the detected oil plug cylinder are qualified.
Step S6: and finishing the detection.
In the actual process of manufacturing the oil plug, the oil plug grinding is a multi-turn repeated grinding process, and the traditional method needs grinding while detecting. When detecting, need assemble the oil plug pole and oil plug jar and detect together on the whole piece, assembly time is longer, can't satisfy the quick verification of product, restricts product production efficiency. According to the oil plug detection method 200, whether the oil plug is qualified or not is determined by comparing the decibel of the friction impact sound between the oil plug rod and the oil plug cylinder with the decibel interval of the standard, the quality of the oil plug can be detected quickly and efficiently, the detection efficiency is greatly improved, the time for repeated field assembly and grinding is shortened, the qualified rate of parts is improved, and the production period of the parts is shortened.
Preferably, in step S1, the matching position of the oil plug rod and the oil plug cylinder is evenly coated with the abrasive, and the matching grinding is performed manually.
Preferably, in step S1, the matched grinding is performed manually.
Preferably, in step S2, a fixed frequency is 0Hz to 5 Hz.
Further, the standard decibel interval in the present invention can be obtained in various ways. Fig. 3 shows a first schematic flow chart of obtaining a standard value interval in the oil plug detection method provided by the invention. As shown, the steps for obtaining the standard decibel interval are as follows:
step T11: taking 1 pair out of n1 pairs of new oil plug rod and oil plug cylinder, grinding the oil plug rod and the oil plug cylinder, and n1 is an integer greater than or equal to 2.
Step T12: and (3) assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder until the debugging requirements are met.
Step T13: the method comprises the steps that an oil plug rod and an oil plug cylinder which meet debugging requirements are installed on a detection platform, the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at a fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the sound decibel value is determined as a standard value.
Step T14, if no new oil plug rod and oil plug cylinder exist, namely, the grinding and detection of all new oil plug rods and oil plug cylinders are completed, the step T16 is carried out;
step T15, turning to step T11, taking other new oil plug rods and oil plug cylinders, and continuing to grind;
and step T16, forming a standard value interval by the plurality of standard values. Specifically, each pair of the oil plug rod and the oil plug cylinder generates a standard value. The minimum value and the maximum value of the plurality of standard values constitute two end values of the standard value interval. It is easy to understand that in the method 200 for detecting the oil plug, when the decibel value of the sound measured by the oil plug falls within the range of the standard value and includes the two endpoints, the oil plug rod and the oil plug cylinder are detected to be qualified.
Fig. 4 shows a schematic flow chart ii for obtaining a standard value interval in the oil plug detection method provided by the present invention. In another embodiment of the present invention, the step of obtaining the standard decibel interval is as follows:
step T21: taking 1 pair out of n2 pairs of new oil plug rod and oil plug cylinder, grinding the oil plug rod and the oil plug cylinder, and n2 is an integer larger than 0.
Step T22: and (3) assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder until the debugging requirements are met.
Step T23: the method comprises the steps that an oil plug rod and an oil plug cylinder which meet debugging requirements are installed on a detection platform, the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at a fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the sound decibel value is determined as a standard value.
And step T24, after the oil plug rod and the oil plug cylinder are continuously ground for a set time, the ground oil plug rod and the ground oil plug cylinder are assembled in an oil way, and if the debugging requirements can be met, the step T23 is carried out.
And step T25, if no new oil plug rod and oil plug cylinder exist, the step T27 is executed.
And step T26, switching to step T21, and continuously taking a new oil plug rod and an oil plug cylinder.
And step T27, forming a standard value interval by the plurality of standard values. The method differs from the above-described method of generating standard value intervals in that one or more standard values can be generated for each pair of the oil plug rod and the oil plug cylinder. The minimum value and the maximum value among the plurality of standard values constitute both end values of the standard value interval. It is easy to understand that in the method 200 for detecting the oil plug, when the decibel value of the sound measured by the oil plug falls within the range between the standard value and the range including the two endpoints, the detected oil plug including the oil plug rod and the oil plug cylinder is qualified.
Fig. 5 shows a third schematic flow chart of the method for detecting an oil plug according to the present invention, wherein the third schematic flow chart is used for obtaining a standard value interval. As shown in the figure, the steps of obtaining the standard decibel interval in another embodiment of the present invention are as follows:
step T31: taking 1 pair out of n3 pairs of new oil plug rod and oil plug cylinder, grinding the oil plug rod and the oil plug cylinder, and n3 is an integer larger than 0.
Step T32: and (4) assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder.
Step T33: the method comprises the steps that an oil plug rod and an oil plug cylinder which meet debugging requirements are installed on a detection platform, the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at a fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the sound decibel value is determined as a standard value.
Step T34, after the oil plug rod and the oil plug cylinder are continuously ground for a set time, the oil plug rod and the oil plug cylinder are installed on a detection platform, the oil plug rod is enabled to repeatedly oscillate and move in the oil plug cylinder at a fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the recorded sound decibel value is a recorded value;
and step T35, assembling the ground oil plug rod and the oil plug cylinder into the oil circuit, converting the recorded value into a standard value if the debugging requirement can be met, and turning to step T34.
And step T36, if no new oil plug rod and oil plug cylinder exist, the step T37 is executed, otherwise, the step T31 is executed.
And step T37, forming a standard value interval by the plurality of standard values.
The method is not substantially different from the method for generating the standard value interval, and each pair of the oil plug rod and the oil plug cylinder can generate one or more standard values. The minimum value and the maximum value among the plurality of standard values constitute both end values of the standard value interval. It is easy to understand that in the method 200 for detecting the oil plug, when the decibel value of the sound measured by the oil plug falls within the range between the standard values and includes the two endpoints, the detected oil plug including the oil plug rod and the oil plug cylinder is qualified.
In practical applications, n1, n2, and n3 may be selected to be smaller integers, such as less than 5, so as to obtain a more basic standard value range as soon as possible.
Fig. 6 shows a schematic flow chart of the extended standard value interval in the oil plug detection method provided by the invention. After the standard value section is formed, the following steps may be performed to expand the range of the standard value section:
and V1, taking 1 pair out of the n4 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, and n4 is an integer larger than 0.
Step V2: the ground oil plug rod and the oil plug cylinder are installed on a detection platform, the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at a fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the sound decibel value is recorded to form a recorded value.
V3, if the recorded value is smaller than or falls within the range of the standard value interval, continuing to grind the oil plug rod and the oil plug cylinder, and turning to V2; if the recorded value is larger than the standard value interval, the step V4 is executed.
And V4, assembling the ground oil plug rod and the oil plug cylinder into the oil circuit, converting the recorded value into a maximum standard value if the debugging requirement can be met, and modifying the range of the standard value interval. If the debugging requirements cannot be met, the oil plug rod and the oil plug cylinder are unqualified and are treated as waste parts, and the next step is continuously executed.
And step V5, if no new oil plug rod and oil plug cylinder exist, the step V7 is executed.
And step V6, turning to step V1, taking new oil plug rods and oil plug cylinders, and traversing all the new oil plug rods and oil plug cylinders.
And step V7, finishing the range modification of the standard value range.
By the method, the range of the standard value interval can be rapidly expanded, and the maximum end value is adjusted to a reasonable range, so that the range of the standard decibel interval in the oil plug detection method 200 provided by the invention can be rapidly obtained. Smaller integers, e.g., within 10, may be selected for n4 to refine a standard value range.
The oil plug detection method 200 provided by the invention has the following advantages:
1. whether the oil plug is qualified or not can be accurately judged, unqualified products are prevented from being mixed into qualified parts, and the defective rate of the fuel nozzle is reduced;
2. the oil plug fit clearance can be rapidly detected, the production efficiency of the oil plug is improved, and the production cost of the oil plug is reduced;
3. the universality is stronger, and the kit can be suitable for the rapid detection of other matching parts.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (9)
1. An oil plug detection method, wherein the oil plug comprises an oil plug rod and an oil plug cylinder which are matched with each other, and the detection method comprises the following steps:
step S1: grinding the oil plug rod and the oil plug cylinder;
step S2: mounting the oil plug rod and the oil plug cylinder on a detection platform, and enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at a fixed frequency;
step S3, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer;
step S4: comparing the measured sound decibel value with a standard decibel interval, if the sound decibel value is smaller than the standard decibel interval, returning to the step S1, if the sound decibel value is larger than the standard decibel interval, the oil plug rod and the oil plug cylinder are unqualified in detection, and going to the step S6;
step S5: if the sound decibel value is within the standard decibel interval, the oil plug rod and the oil plug cylinder are detected to be qualified;
step S6: and finishing the detection.
2. The method of claim 1, wherein in step S1, an abrasive is uniformly applied to the joint of the oil plug rod and the oil plug cylinder.
3. The method for detecting an oil plug according to claim 1, wherein in step S1, the matched grinding is performed manually.
4. The method for detecting an oil plug according to claim 1, wherein in step S2, the fixed frequency is 0Hz to 5 Hz.
5. The method according to claim 1, wherein the step of obtaining the standard decibel interval is as follows:
step T11: grinding the oil plug rod and the oil plug cylinder from 1 pair of the new n1 pairs, wherein n1 is more thanIs equal to 2An integer of (d);
step T12: assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder until the debugging requirements are met;
step T13: installing the oil plug rod and the oil plug cylinder which meet debugging requirements on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and determining the sound decibel value as a standard value;
step T14, if no new oil plug rod and oil plug cylinder exist, the step T16 is executed;
step T15, go to step T11;
and T16, forming the standard value interval by a plurality of standard values.
6. The method according to claim 1, wherein the step of obtaining the standard decibel interval is as follows:
step T21: taking 1 pair out of n2 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n2 is an integer greater than 0;
step T22: assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder;
step T23: installing the oil plug rod and the oil plug cylinder which meet debugging requirements on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and determining the sound decibel value as a standard value;
step T24, after the oil plug rod and the oil plug cylinder are continuously ground for a set time, the ground oil plug rod and the ground oil plug cylinder are assembled in an oil way, and if the debugging requirements can be met, the step T23 is carried out;
step T25, if no new oil plug rod and oil plug cylinder exist, the step T27 is executed;
step T26, go to step T21;
and T27, forming the standard value interval by a plurality of standard values.
7. The method according to claim 1, wherein the step of obtaining the standard decibel interval is as follows:
step T31: taking 1 pair out of n3 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n3 is an integer greater than 0;
step T32: assembling the ground oil plug rod and the oil plug cylinder into an oil way, and if the debugging requirements cannot be met, continuing to grind the oil plug rod and the oil plug cylinder;
step T33: installing the oil plug rod and the oil plug cylinder which meet debugging requirements on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and determining the sound decibel value as a standard value;
step T34, after the oil plug rod and the oil plug cylinder are continuously ground for a set time, the oil plug rod and the oil plug cylinder are installed on the detection platform, the oil plug rod repeatedly oscillates and moves in the oil plug cylinder at the fixed frequency, a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact is detected through a decibel measurer, and the sound decibel value is recorded as a recorded value;
step T35, the ground oil plug rod and the oil plug cylinder are assembled in an oil way, if the oil plug rod and the oil plug cylinder can meet the debugging requirement, the recorded value is converted into a standard value, and the step T34 is carried out;
step T36, if no new oil plug rod and oil plug cylinder exist, the step T37 is executed, otherwise, the step T31 is executed;
and T37, forming the standard value interval by a plurality of standard values.
8. The method according to any one of claims 5 to 7, wherein after the standard value interval is formed, the following steps are performed:
step V1, taking 1 pair out of n4 pairs of new oil plug rods and oil plug cylinders, grinding the oil plug rods and the oil plug cylinders, wherein n4 is an integer larger than 0;
step V2: mounting the ground oil plug rod and the oil plug cylinder on the detection platform, enabling the oil plug rod to repeatedly oscillate and move in the oil plug cylinder at the fixed frequency, detecting a sound decibel value generated when the oil plug rod and the oil plug cylinder are in friction impact through a decibel measurer, and recording the sound decibel value to form a recorded value;
step V3, if the recorded value is smaller than or falls within the range of the standard value interval, continuing to grind the oil plug rod and the oil plug cylinder, and turning to step V2; if the recorded value is larger than the standard value interval, turning to step V4;
step V4, the ground oil plug rod and the oil plug cylinder are assembled in an oil way, if the oil plug rod and the oil plug cylinder can meet the debugging requirement, the recorded value is converted into a standard value, and the range of the standard value interval is modified;
step V5, if no new oil plug rod and oil plug cylinder exist, the step V7 is executed;
step V6, go to step V1;
and step V7, finishing the range modification of the standard value interval.
9. The method according to any one of claims 5 to 7, wherein the maximum value and the minimum value among the plurality of standard values are taken to constitute the standard value interval.
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