CN112846640B - Pressure checking method and machining equipment - Google Patents
Pressure checking method and machining equipment Download PDFInfo
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- CN112846640B CN112846640B CN202011483598.6A CN202011483598A CN112846640B CN 112846640 B CN112846640 B CN 112846640B CN 202011483598 A CN202011483598 A CN 202011483598A CN 112846640 B CN112846640 B CN 112846640B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The application relates to the technical field of machining, in particular to a pressure checking method and machining equipment, wherein the pressure checking method comprises the following steps: inputting N input values to the bolt fillet rolling machine so that the bolt fillet rolling machine can sequentially apply N output forces to a workpiece to be processed; and calculating a first target parameter K and a second target parameter B according to the test result of the test device to obtain a proposed function formed by the input value, the output force and the first target parameter K and the second target parameter B. According to the pressure checking method, automatic checking of the working pressure of the bolt fillet rolling machine is achieved, the gap that the existing bolt fillet rolling machine has no working pressure checking function is filled, the working pressure of the bolt fillet rolling machine after checking through the working pressure is stable, the pressure fluctuation is extremely small, the bolt quality consistency of the fillet rolling machine is good, and importantly, the product performance is stable, and the yield is greatly improved.
Description
Technical Field
The application relates to the technical field of machining, in particular to a pressure checking method and machining equipment.
Background
Currently, high strength bolts are increasingly used in different fields of industrial production. To improve the fatigue strength of the bolt, a technical means of fillet rolling is required to be used for the junction of the bolt head and the bolt rod, and the fatigue strength is improved through the cold rolling technology, so that the fatigue fracture of the bolt is prevented.
Most of the existing fillet rolling machine equipment is free of a working pressure checking system, only a small part of equipment with the pressure checking system is required to continuously process workpieces by an operator, a production experience is formed when a certain amount of workpieces are accumulated, and finally some experience parameters are set through the experience of the operator, so that the working pressure value is stabilized in an optimal range, which is equivalent to checking the working pressure of the equipment, a more accurate checking process aiming at a specific type of workpieces cannot be provided, the fluctuation of the system pressure of the equipment and the difference of the bolt processing process are caused when the fillet rolling machine works, the quality of the bolts processed by the fillet rolling machine is inconsistent, the product performance is unstable, and the rejection rate is higher.
Disclosure of Invention
The utility model aims at providing a pressure checking method and machining equipment to solve the fillet rolling equipment that exists in the prior art lacks operating pressure checking process to a certain extent, lead to the inconsistent bolt quality of processing, product performance is unstable, the higher technical problem of rejection rate.
The application provides a pressure checking method, which comprises the following steps:
arranging a testing device on a workpiece to be processed;
inputting N input values to a bolt fillet rolling machine, so that the bolt fillet rolling machine can sequentially apply N output forces to the workpiece to be processed;
the testing device is used for detecting and recording the value of the output force applied by the bolt fillet roller press to the workpiece to be processed;
and calculating a first target parameter K and a second target parameter B according to the test result of the test device to obtain a proposed function formed by the input value, the output force and the first target parameter K and the second target parameter B.
In the above technical solution, further, the pressure checking method further includes drawing a graph according to N scatter coordinates corresponding to the N input values and the N output forces.
In any of the above solutions, further, the pressure checking method further includes inputting the proposed function into the bolt fillet roller press, the proposed function being used as a machining calibration reference for the workpiece to be machined.
In any of the above embodiments, further, the proposed function is a linear function.
In any of the above technical solutions, further, N is a positive integer, and 2 is less than or equal to N.
In any of the above embodiments, further, n=16.
In any of the above technical solutions, further, the testing device is a pressure sensor.
In any of the above technical solutions, further, the bolt fillet rolling machine includes a driving cylinder, and the input value is an air pressure value input to the driving cylinder.
In any of the above embodiments, further, the output force is a rolling force acting on the workpiece to be processed.
The application also provides a machining device, which comprises the pressure checking method according to any one of the technical schemes, so that the machining device has all the beneficial technical effects of the pressure checking method, and the description is omitted here.
Compared with the prior art, the beneficial effects of this application are:
the pressure checking method provided by the application comprises the following steps:
the bolt fillet rolling machine is arranged on the testing device of the workpiece to be processed;
inputting N input values to the bolt fillet rolling machine so that the bolt fillet rolling machine can sequentially apply N output forces to a workpiece to be processed;
the testing device is used for detecting and recording the value of the output force applied by the bolt fillet roller press to the workpiece to be processed;
and calculating a first target parameter K and a second target parameter B according to the test result of the test device to obtain a proposed function formed by the input value, the output force and the first target parameter K and the second target parameter B.
The application provides a solve method of bolt fillet rolling press operating pressure check, realized the automatic check of bolt fillet rolling press operating pressure, the primary function model in the reference mathematical function sets up pressure check system, fill the blank that current bolt fillet rolling press does not have operating pressure check function, its operating pressure through bolt fillet rolling press after the operating pressure check is stable, pressure fluctuation is minimum makes the bolt quality uniformity of fillet rolling press processing good, make the deformation of bolt fillet department even, prevent inside lattice damage, reach the purpose that bolt tensile strength promoted, importantly product performance is stable, the yields improves greatly, input parameter can carry out the check of operating pressure, need not the operator to set up experience parameter, improve production efficiency.
The mechanical processing equipment comprises the pressure checking method, so that the mechanical processing equipment can be checked more accurately through the pressure checking method, the checking precision and the processing precision are ensured, and the processing yield is remarkably improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph of a proposed function of a pressure check method provided in an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.
All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
A pressure check method and a machining apparatus according to some embodiments of the present application are described below with reference to fig. 1. Fig. 1 is a graph of a proposed function of a pressure check method according to an embodiment of the present application, wherein the ordinate is the output force (y) and the abscissa is the input value (x).
The embodiment of the application provides a pressure checking method, which comprises the following steps:
in the embodiment of the application, the workpiece to be machined is specifically a bolt which needs to be subjected to fillet rolling on the junction of a bolt head and a bolt rod through the bolt fillet rolling machine, the bolt fillet rolling machine further comprises a testing device which can be arranged on the workpiece to be machined and is used for detecting acting force of the bolt fillet rolling machine on the workpiece to be machined, each input value is input to the bolt fillet rolling machine, the bolt fillet rolling machine can apply a corresponding output force to the workpiece to be machined as acting force of rolling machining, namely, the input value is taken as an independent variable, the output force is taken as a dependent variable, a functional relation exists between the input value and the output force, and in theory, air pressure of 1bar can provide rolling force of 80kgf, namely, a certain relation A=80 (kgf/bar) exists between the input value and the output force theoretically, A is a constant, meanwhile, in practice, the rolling force (kgf) =80×0.2 (bar-0.2), that is, the functional relationship between the input value and the output force is a linear function, the constant a can be regarded as the slope relationship between the input value and the output force, wherein 0.2 is the friction, leakage and damping influencing factor of the system gas, but in actual machining, the slope relationship between the input value and the output force for different types and models of workpieces to be machined is a constant fixed value but not necessarily equal to a (80), so the pressure checking method provided by the embodiment can make the same workpiece to be machined with more accurate setting standard according to the same standard by obtaining the fitting functional relationship between the input value and the output force for a specific workpiece to be machined and machining the specific workpiece according to the obtained fitting function as the standard, and further ensures the consistent quality and stable performance of the workpieces to be processed in the same batch.
Specifically, the bolt fillet rolling machine comprises a driving cylinder for driving a processing tool to move towards or away from a workpiece to be processed to perform processing operation, a plurality of groups of air pressures of the driving cylinder are applied to the bolt fillet rolling machine, namely input values, corresponding to the processing tool, corresponding rolling force is applied to the workpiece to be processed, namely output force, the workpiece to be processed is taken as a sample at the moment, the testing device can be a pressure sensor, at least a detection probe part of the pressure sensor is arranged on the sample, and the pressure sensor can detect the value of the rolling force applied to the sample after the processing tool acts on the sample.
It should be noted that, based on the theory that the functional relationship between the known input value (x) and the output force (y) is a primary function, the form of the proposed functional relationship between the input value (x) and the output force (y) may be y=kx+b, and since the testing device can obtain a corresponding data result, i.e. the output force (y), each time one input value (x) is input, in theory, when N is equal to 2, i.e. two sets of input values are input to obtain two sets of output forces corresponding to the input values, the proposed function of the workpiece to be processed corresponding to the sample can be obtained through calculation by substituting the two sets of output forces into the proposed function.
Then, the proposed function is used as a calibrated standard input bolt fillet rolling machine to be used as a machining calibration reference for the workpieces to be machined, so that the bolt fillet rolling machine executes machining operation according to the machining calibration reference, the machining process of machining the workpieces to be machined, which are samples, is operated according to a mode which is most suitable for the proposed function of the workpieces to be machined.
Further, regarding the selection of the number of N, the selection of the number of discrete coordinate points (X, Y) corresponding to the input value (X) and the output force (Y) can be correspondingly considered, when N is 2, for the situation that the theory is realizable, in order to ensure the true fitting degree of the proposed function, a plurality of discrete coordinate points should be selected as much as possible, preferably, the number of N should be greater than or equal to 2.
Further, for the first target parameter K and the second target parameter B, manual calculation may be adopted, but in order to ensure the accuracy of the calculation result, the fitting degree of the proposed function, and avoid excessive additional workload for the staff, computer software such as Excel is preferably used to draw a graph according to N sets of discrete coordinate points (X, Y) corresponding to the output force (Y) and directly output the proposed function, and meanwhile, the corresponding first target parameter K and the corresponding second target parameter B may be automatically calculated, that is, the slope and the intercept of the drawn graph (the intercept is actually the vertical intercept according to the image shown in fig. 1).
Hereinafter, a specific checking example will be listed, preferably, N is selected to be 16, the range of input values, the selection is determined by the model of the bolt fillet roller press, in this embodiment, the selection of input values and the detection result of the test device are referred to the following table (test table):
and drawing a curve (actually a straight line) according to each group of data of the test table to obtain a proposed function y=Kx+B for the sample, wherein K=153.58 and B= 11.985, namely the proposed function is 'y=153.58x+11.985', inputting the proposed function back to the bolt fillet roller press as a processing calibration reference for the workpiece to be processed, and then executing batch processing operation according to the processing calibration reference. When the type or model of the workpiece to be processed is replaced, the sample is replaced, and the pressure checking method is repeated to obtain a corresponding planned function of the new sample.
Therefore, the application provides a method for checking the working pressure of the bolt fillet rolling machine, automatic checking of the working pressure of the bolt fillet rolling machine is achieved, a pressure checking system is established by referring to a primary function model in a mathematical function, the gap of the existing bolt fillet rolling machine with no working pressure checking function is filled, the working pressure of the bolt fillet rolling machine after checking the working pressure is stable, pressure fluctuation is extremely small, the bolt quality consistency of the fillet rolling machine is good, deformation of the bolt fillet is even, internal lattice damage is prevented, the purpose of improving the tensile strength of the bolt is achieved, the product performance is stable, the yield is greatly improved, the checking of the working pressure can be carried out by input parameters, an operator is not required to set experience parameters, and the production efficiency is improved.
The embodiment of the application also provides a machining device, which comprises the pressure checking method in any embodiment, so that the machining device has all the beneficial technical effects of the pressure checking method, and the description is omitted here.
It should be noted that, the pressure checking method provided by the application is particularly suitable for checking the bolt fillet roller press, but is not meant to be only suitable for the bolt fillet roller press, and for other types of machining equipment, corresponding graphs can be drawn according to the same conception, required target parameters are obtained, and then a proposed function capable of being used as a machining calibration reference is obtained, so that the machining equipment has higher checking precision.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (5)
1. A pressure check method, comprising:
arranging a testing device on a workpiece to be processed, wherein the workpiece to be processed is a bolt which needs to be subjected to fillet rolling on the junction of a bolt head and a bolt rod through a bolt fillet rolling machine; the bolt fillet roller press comprises a driving cylinder;
inputting N input values to the bolt fillet rolling machine, so that the bolt fillet rolling machine can sequentially apply N output forces to the workpiece to be processed, wherein the output forces are rolling forces acting on the workpiece to be processed; the input value is an air pressure value input to the driving air cylinder;
the testing device is used for detecting and recording the value of the output force applied by the bolt fillet roller press to the workpiece to be processed;
calculating a first target parameter K and a second target parameter B according to a test result of the test device, and obtaining a proposed function formed by the input value, the output force and the first target parameter K and the second target parameter B, wherein the proposed function is a primary function;
inputting the formulated function back to the bolt fillet roller press to be used as a processing calibration reference of the workpiece to be processed, and then executing batch processing operation according to the processing calibration reference;
and after the workpiece to be processed is replaced, repeating the pressure checking method to obtain the proposed function of the replaced workpiece to be processed as a new processing calibration reference.
2. The pressure check method of claim 1, further comprising plotting N scatter coordinates corresponding to N of the input values and N of the output forces.
3. The pressure checking method according to claim 2, wherein N is a positive integer, and 2 is equal to or less than N.
4. A pressure checking method according to claim 3, wherein n=16.
5. A pressure checking method according to claim 1 or 2, wherein the test device is a pressure sensor.
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