CN111931300A - Cylinder cover oil duct machining parameter determination method based on high-pressure water jet deburring - Google Patents

Cylinder cover oil duct machining parameter determination method based on high-pressure water jet deburring Download PDF

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CN111931300A
CN111931300A CN202010578581.2A CN202010578581A CN111931300A CN 111931300 A CN111931300 A CN 111931300A CN 202010578581 A CN202010578581 A CN 202010578581A CN 111931300 A CN111931300 A CN 111931300A
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burr
water jet
parameters
pressure water
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陈明
马海善
周佼
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Jiangsu Haibo Tool Industry Research Institute Co ltd
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Abstract

An empirical model of burr size, cutting speed and feed is established according to the relation between the size of mutually-perforated holes of a cylinder cover oil duct and machining parameters in actual machining, then a water jet process is optimized based on ANSYS Fluent simulation, the critical size of mutually-perforated hole burrs which can be removed under rated pressure is determined, and a proper cylinder cover oil duct machining parameter interval is determined under a given water jet load based on the empirical model of burr size and technological parameters, so that subsequent burrs are thoroughly removed. According to the invention, the water jet outlet pressure of the nozzle under different jet loads can be obtained through simulation, and the critical dimension of the burr which can be removed under different loads is determined; the method directly determines the cutting speed and the feed amount when the through holes of the cylinder cover oil duct are processed according to the rated load of the water jet on the actual production line, so the method has the advantages of low cost, quickness and wide application range, and can quickly determine the drilling process parameters of the through holes.

Description

Cylinder cover oil duct machining parameter determination method based on high-pressure water jet deburring
Technical Field
The invention relates to the technical field of a method for determining machining parameters of an oil duct of a cylinder cover by taking the size of machined burrs as a constraint condition, in particular to a method for determining machining parameters of an oil duct of a cylinder cover by removing burrs based on high-pressure water jet.
Background
The cleanliness of the main oil gallery of the engine cylinder cover is required to be not more than 4 mg. The main factor influencing the cleanliness of the oil duct hole is residual aluminum scraps or processing burrs, the residual aluminum scraps can be cleaned by a cleaning machine under the ordinary condition, but the general cleaning machine is difficult to thoroughly clean the oil duct hole burrs and needs to be assisted by other auxiliary means. For example, the high-pressure water jet deburring is carried out, namely, a high-pressure nozzle of a cleaning machine is used for cleaning a main oil passage hole and each inclined oil hole of a cylinder cover, and the cleaning pressure can reach more than 450 bar. The production line verifies that the method has good deburring effect. However, as the toughness and ductility of the workpiece are better and better, burrs are more easily generated and more difficult to remove, and the high-pressure cleaning process needs to be further optimized or the size of the burrs needs to be actively controlled, so that the deburring effect is improved.
The previous research mainly focuses on the design aspect of deburring equipment for the engine cylinder cover, for example, a special deburring machine for the engine cylinder cover with the publication number of CN108032167A, burrs of an inner hole, a side hole and an outer surface of the cylinder cover are sequentially removed in an automatic assembly line mode, and the production efficiency is improved; the engine cylinder cover deburring component with the publication number of CN108274333A comprises a machine body, a lifting roller way device, an inclined oil channel power head and a long oil channel power head; the robot automatic burr trimming workstation for the engine cylinder cover with the publication number of CN108907948A comprises a robot, a control system for controlling the robot to work, a jacking positioning device, a cylinder cover gripper assembly and a burr trimming tool assembly; similar to these patent documents, the prior art only proposes a design method of a deburring device, does not propose an active control method of burrs during machining of an oil passage of a cylinder head, and cannot actively solve the problem fundamentally.
The fluid simulation generally comprises five parts, such as establishing a geometric model, dividing grids, setting boundary conditions, calculating and solving, post-processing and the like, for example, a method for analyzing the simulation of the internal flow field of a rough micro-channel based on Fluent software with the publication number of CN109858105A, wherein the method is to utilize ANSYS Fluent to establish a model and calculate to obtain the distribution condition of flow field parameters of gas in the rough micro-channel, and provide theoretical guidance for the design and application of the micro-channel.
Disclosure of Invention
Aiming at the defects, the invention provides a cylinder cover oil duct machining parameter determination method for deburring based on high-pressure water jet, which comprises the steps of exploring the influence of machining parameters on the size of the burr of the through hole through a variable parameter experiment, establishing an empirical model of the characteristic size of the burr relative to process parameters, simulating and optimizing a water jet process, establishing a regression model of water jet load and the size of the removed burr, determining the critical size of the removed burr according to the water jet load on an actual production line, selecting proper machining parameters under the given water jet load based on the empirical model of the size of the burr and the process parameters, and actively controlling the size of the burr so that the burr of the through hole can be effectively removed in the subsequent water jet cleaning process.
The technical scheme adopted by the invention for solving the technical problems is as follows: a cylinder cover oil duct machining parameter determining method based on high-pressure water jet deburring comprises the following steps:
the method comprises the following steps: establishing an empirical model of the machined burr according to the characteristic size of the machined oil passage of the cylinder cover about the cutting speed and the feeding amount;
step two: establishing a water jet nozzle simulation model in ANSYS Fluent software, and optimizing the ejection angle, the circumferential angle and the notch width of the water jet;
step three: determining corresponding outlet pressures under different water jet loads according to the nozzle geometric parameters optimized in the second step;
step four: establishing a burr simulation model in ABAQUS software, and performing calculation region setting and grid division;
step five: loading a series of water jet outlet pressures obtained in the step three onto the built burr simulation model in the step four, calculating, and building a regression model of water jet load and removed burr size;
step six: changing the characteristic size of the burr, repeating the step five, and determining the minimum characteristic size of the burr which can be removed under the given water jet load;
step seven: and (3) determining a cutting speed and a feeding amount interval during drilling of the oil duct hole based on the empirical model established in the step one by taking the minimum characteristic dimension of the high-pressure water jet capable of removing burrs as a constraint condition according to the load of the high-pressure water jet on the actual production line.
According to the method for determining the machining parameters of the cylinder cover oil duct based on the high-pressure water jet deburring, in the step one, the characteristic size of the burr is the ratio of the height of the burr to the thickness of the burr, and the characteristic size of the burr is used as an index for measuring whether the burr is easy to remove.
The invention provides a cylinder cover oil duct processing parameter determining method based on high-pressure water jet deburring, comprising the following steps,
(1) carrying out a drilling experiment of the cylinder head oil passage hole according to technological parameters (cutting speed and feeding amount) applied in actual production, measuring the burr degree and the burr thickness of the through hole after the experiment, establishing a mathematical model between the characteristic size of the burr and the processing parameters by using an exponential formula, wherein the fitting formula is
Figure BDA0002552235320000035
Wherein a is the burr height, b is the burr thickness, v is the cutting speed, f is the feed per tooth, the data are taken in, and the obtained formula is that a is 2438v- 0.617f0.101…(3),b＝4490v-0.445f0.923…(4)；
(2) After the empirical model is established, the effectiveness of the empirical model is checked, and a remarkable linear relation exists between the cutting parameters and the burr sizes, and the formula is
Figure BDA0002552235320000031
Wherein R is2As the ratio of the regression sum of squares to the total sum of squared deviations,
Figure BDA0002552235320000032
for the values that are fitted to the samples,
Figure BDA0002552235320000033
is the sample average value, yiAs actual value of the sample, R2The value is between 0 and 1, the closer to 1, the better the model fitting effect;
(3) according to the mathematical model between the burr characteristic dimension (burr height, burr thickness) and the cutting parameter of the mutual through hole that establish, define the ratio of burr height and burr thickness as the characteristic dimension of burr, regard burr characteristic dimension as the index whether burr is got rid of easily, can obtain the formula (promptly the empirical model):
Figure BDA0002552235320000041
eta is the characteristic size of the burr, the larger the characteristic size eta of the burr is, the larger the height a of the burr is, the smaller the thickness b of the burr is, and the easier the burr is to remove.
The invention provides a cylinder cover oil duct processing parameter determining method based on high-pressure water jet deburring, which comprises the following steps of firstly, establishing a high-pressure water jet nozzle three-dimensional model according to a drawing, determining the pressure of a water jet outlet when an ejection angle, a peripheral angle and a notch width are determined through ANSYS Fluent simulation, and optimizing nozzle parameters through optimizing parameters of the ejection angle, the peripheral angle and the notch width when high-pressure water jet is cleaned; secondly, the optimized nozzle is used for simulating the pressure of the water jet outlet under different water jet loads.
In the fourth step of the method for determining the machining parameters of the cylinder cover oil passage based on the deburring of the high-pressure water jet, parts and burrs are subjected to area sweep division in abaqus software according to the hexahedral cell type, wherein the hexahedral cell type is C3D 6.
In the fifth step of the method for determining the machining parameters of the cylinder cover oil duct based on the deburring of the high-pressure water jet, the regression model is that y is 3.81-0.012x +1.28 x 10-5x2Wherein x is the water jet load and y is the burr height and burr thicknessThe ratio of (a) to (b).
According to the cylinder cover oil duct machining parameter determining method based on the high-pressure water jet deburring, in the sixth step, if the burrs in the simulation break, the burrs of the intersecting holes can be removed, and if the burrs in the simulation do not break, the burrs of the intersecting holes cannot be removed.
The invention has the beneficial effects that: according to the relation between the size of the mutually-perforated hole of the oil duct of the cylinder cover and the machining parameters in actual machining, an empirical model of the size of the burr, the cutting speed and the feeding amount is established, then the water jet process is optimized based on ANSYS Fluent simulation, and the critical size of the mutually-perforated hole burr which can be removed under the rated pressure is determined. And finally, based on an empirical model of burr size and process parameters, determining a proper cylinder cover oil passage processing parameter interval under a given water jet load, and realizing the thorough removal of subsequent burrs.
The method has the advantages that:
(1) the cost is low, the speed is high, a large amount of high-cost experiments are not needed to optimize each process, and the structure of the nozzle is optimized only through simulation;
(2) the water jet outlet pressure of the nozzle under different jet loads can be obtained through simulation, and the critical dimension of the burr which can be removed under different loads is determined;
(3) the cutting speed and the feed amount during machining of the through hole of the cylinder cover oil passage can be directly determined according to the rated load of the water jet on the actual production line.
(4) The method has the advantages of low cost, rapidness and wide application range, and can rapidly determine the drilling process parameters of the intersecting hole.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view of a burr of an intersecting hole;
FIG. 2 is a model validity analysis;
FIG. 3 is a three-dimensional model of a water jet nozzle;
FIG. 4 illustrates water jet outlet pressures for different slot widths;
FIG. 5 shows the water jet outlet pressures at different peripheral angles;
FIG. 6 shows water jet exit pressures for different exit angles;
FIG. 7 is a water jet deburring simulation model;
FIG. 8 is a cloud diagram of the simulated stress of deburring when the water jet load is 300 bar;
FIG. 9 illustrates water jet deburring capability at different loads;
FIG. 10 is a reasonable processing section that facilitates burr removal;
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.
The invention mainly solves the problem of removing burrs of through holes of a cylinder cover oil passage and analyzes the processing parameters of the burrs, for example, a hole a and a hole b in the figure 1 are communicated, and the mutually connected positions of the hole a and the hole b are provided with the burrs of the through holes, and aims at the processing method of the burrs of the through holes.
A cylinder cover oil duct machining parameter determining method based on high-pressure water jet deburring comprises the following steps:
the method comprises the following steps: according to the method for determining the machining parameters of the cylinder cover oil duct based on the high-pressure water jet deburring, the characteristic size of the burr in the first step is the ratio of the height of the burr to the thickness of the burr, and the characteristic size of the burr is used as an index for judging whether the burr is easy to remove or not.
In detail, (1) the drilling experiment of the cylinder head oil passage hole is carried out according to the technological parameters (cutting speed and feed amount) used in the actual production, the burr degree and the burr thickness of the through hole are measured after the experiment, an exponential formula is used for establishing a mathematical model between the burr characteristic dimension and the processing parameters, and the fitting formula is that
Figure BDA0002552235320000064
Wherein a is the height of the burr, b is the thickness of the burr, and the unit is the sameIs μm, v is the cutting speed, f is the feed per tooth, the data is taken in, the resulting equation is a 2438v-0.617f0.101…(3),b＝4490v-0.445f0.923…(4)；
(2) After the empirical model is established, the effectiveness of the empirical model is checked, if the significance level is 0.1, the effectiveness analysis of the mathematical model is shown as 2, the F distribution table is checked to obtain F0.1(2,5) which is 3.78, and since the F value of each regression model is greater than 3.78, a significant linear relation exists between the cutting parameter and the burr size, and the formula is shown as
Figure BDA0002552235320000061
Wherein R is2As the ratio of the regression sum of squares to the total sum of squared deviations,
Figure BDA0002552235320000062
for the values that are fitted to the samples,
Figure BDA0002552235320000063
is the sample average value, yiAs actual value of the sample, R2The value is between 0 and 1, the closer to 1, the better the model fitting effect;
(3) according to the mathematical model between the burr characteristic dimension (burr height, burr thickness) and the cutting parameter of the mutual through hole that establish, define the ratio of burr height and burr thickness as the characteristic dimension of burr, regard burr characteristic dimension as the index whether burr is got rid of easily, can obtain the formula (promptly the empirical model):
Figure BDA0002552235320000071
eta is the characteristic size of the burr, the larger the characteristic size eta of the burr is, the larger the height a of the burr is, the smaller the thickness b of the burr is, and the easier the burr is to remove.
Step two: establishing a water jet nozzle simulation model in ANSYS Fluent software, as shown in FIG. 3, when high-pressure water jet cleaning is carried out, three main parameters influence the pressure of a water jet outlet, namely an ejection angle i, a peripheral angle j and a notch width d, and the ejection angle i, the peripheral angle j and the notch width d of the water jet are optimized; secondly, the optimized nozzle is used for simulating the pressure of the water jet outlet under different water jet loads.
Fig. 4 shows different notch widths and water jet outlet pressures, and it can be seen from simulation results that the influence of the size of the notch width d on the outlet pressure is relatively obvious, the larger the notch width d is, the higher the water jet outlet pressure is, the less the pressure loss is, but the larger the notch width d is, the smaller the water jet flow velocity becomes, the insufficient impact force is, and the effective burr removal is difficult.
Fig. 5 shows the outlet pressure of the water jet at different peripheral angles j, and the increase of the peripheral angle j has a certain influence on the outlet pressure mainly because the cross-sectional area of the outlet is changed. Overall, the peripheral angle j increases, as does the outlet pressure.
Fig. 6 shows that the water jet outlet pressure and the jet angle mainly affect the jet direction of the water jet at different peripheral angles, and the influence on the water jet outlet pressure is small, but the outlet pressure is significantly reduced at about 70 °. Therefore, in the subsequent simulation, parameters such as the outlet groove width, the peripheral angle, the injection angle and the like of the nozzle are preliminarily set to be 0.25mm, 160 degrees and 60 degrees, and in addition, the outlet pressure of different outlets of the nozzle is different according to a simulation diagram. The load on the burr that was subsequently simulated was taken to be the maximum nozzle outlet pressure.
Step three: determining corresponding outlet pressures under different water jet loads according to the nozzle geometric parameters optimized in the second step; from the simulation results, nozzle outlet pressures at different water jet loads can be obtained, as shown in the following table.
Figure BDA0002552235320000081
Step four: establishing a burr simulation model in ABAQUS software, and performing calculation region setting and grid division; fig. 7 is a water jet deburring simulation model. The overhanging part is the burr, and the size of the overhanging part is determined according to the size of the burr of the intersecting hole measured in the experiment. During simulation, the burr width and the thickness dimension are a fixed value, are 0.2mm and 0.1mm respectively, through changing burr height dimension to obtain different burr height and thickness ratio. The ratio is the characteristic size of the burr, the ratio is used for evaluating the difficulty of burr removal, and the larger the value is, the longer and thinner the burr size is, and the burr is easy to remove by the high-pressure water jet. A load was applied to the upper part of the burr at the jet outlet pressure in table 1. In order to ensure the simulation precision and refine the number of edge seeds of the root of the burr and the contact part of the part, in abaqus software, the part and the burr are subjected to area scanning division through a hexahedral cell type, wherein the hexahedral cell type is C3D6, the bottom of the workpiece is subjected to full constraint (ENCASTRE), six degrees of freedom are limited, and the workpiece is ensured not to move when a load is applied. In order to delete the failure part cells, a STATUS field variable needs to be added to the field output, and a cell deletion command needs to be added to the Assign Element Type module. In addition, a material failure model is required to be added, and a Johnson-Cook constitutive model is adopted as a material failure constitutive model. The failure displacement is typically 1/3, here 0.03, of the minimum cell size.
Step five: and (3) loading a series of water jet outlet pressures obtained in the third step on the established burr simulation model in the fourth step, calculating, and establishing a regression model of the water jet load and the size of the removed burr, in detail, when the water jet load is 300bar, a simulation result of the water jet removing burrs with different sizes is shown in fig. 8. When the ratio of the height to the thickness of the burr is 1.4, as can be seen from the stress cloud chart (as shown in fig. 8 (a)), the root of the burr is already yielding (yield strength is 70.4MPa), and the material is slightly bent under the load. However, no fracture occurred; therefore, the burr height and thickness ratio is adjusted to 1.5, and at this time, the burr is broken by the load, as shown in fig. 8 (b); to obtain a more exact ratio, the ratio of the height to the thickness of the burr was adjusted to 1.45, and the simulation was performed again, at which time the burr also fractured under load. Therefore, according to the simulation result, when the water jet load is 300bar, the outlet pressure of the nozzle is 217bar, and the maximum ratio of the height to the thickness of the removed burr size is 1.45.
As shown in fig. 9, the simulation was repeated and tried to determine the size of the burr removed under a certain water jet load. FIG. 9 is the maximum ratio of the height to the thickness of the size of the burr removed by the water jet under different loads obtained by the high-pressure water jet deburring simulation model. As can be seen from the figure, the maximum load of the water jet used for simulation is 400bar, and the maximum ratio of the height to the thickness of the burr size capable of being removed is 1.15. Therefore, within the simulated water jet load range, the maximum ratio of the height to the thickness of the burr which can be removed is more than 1. Therefore, if the burr is too thick or the height dimension of the burr is close to the thickness dimension, the prior cleaning process can not effectively remove the burr of the through hole. The points in fig. 9 are subjected to polynomial fitting to obtain a fitting formula, i.e., the regression model is y is 3.81-0.012x +1.28 x 10-5x2… (7), where x is the water jet load and y is the ratio of burr height to burr thickness.
Step six: changing the characteristic dimension of the burr, repeating the step five, determining the minimum characteristic dimension of the burr which can be removed under the given water jet load, and directly using whether the burr in the simulation breaks as the standard whether the burr of the through hole is removed, namely, if the burr in the simulation breaks, the burr of the through hole can be removed, and if the burr in the simulation does not break, the burr of the through hole cannot be removed.
Step seven: according to the load of the high-pressure water jet on the actual production line, the minimum characteristic size of burrs removed by the high-pressure water jet is taken as a constraint condition, and the cutting speed and the feeding amount interval during drilling of the oil passage hole are determined based on the empirical model established in the step one, in detail, according to the load of high-pressure water jet on the actual production line, based on the characteristic size of the burr and an empirical model of processing parameters, the minimum characteristic dimension of the high-pressure water jet for removing the burr is taken as a constraint condition to determine a processing parameter interval, a figure 10 is an isoline of the ratio of the height of the burr to the thickness of the burr, and a simulation result shows that, under the condition that the rated water jet pressure of the production line is 300bar, the ratio of the size of the removed burr is 1.45, taking the obtained characteristic dimension of the burr as a constraint condition, and obtaining a proper machining interval of the oil passage hole as a shaded marking area in the graph 10 based on an empirical model of the characteristic dimension and the machining parameters of the burr.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example 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, it need not be further defined and explained in subsequent figures.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (7)

1. A cylinder cover oil passage processing parameter determining method based on high-pressure water jet deburring is characterized by comprising the following steps:
the method comprises the following steps: establishing an empirical model of the machined burr according to the characteristic size of the machined oil passage of the cylinder cover about the cutting speed and the feeding amount;
step two: establishing a water jet nozzle simulation model in ANSYS Fluent software, and optimizing the ejection angle, the circumferential angle and the notch width of the water jet;
step three: determining corresponding outlet pressures under different water jet loads according to the nozzle geometric parameters optimized in the second step;
step four: establishing a burr simulation model in ABAQUS software, and performing calculation region setting and grid division;
step five: loading a series of water jet outlet pressures obtained in the step three onto the built burr simulation model in the step four, calculating, and building a regression model of water jet load and removed burr size;
step six: changing the characteristic size of the burr, repeating the step five, and determining the minimum characteristic size of the burr which can be removed under the given water jet load;
step seven: and (3) determining a cutting speed and a feeding amount interval during drilling of the oil duct hole based on the empirical model established in the step one by taking the minimum characteristic dimension of the high-pressure water jet capable of removing burrs as a constraint condition according to the load of the high-pressure water jet on the actual production line.
2. The method for determining the machining parameters of the cylinder cover oil passage based on the high-pressure water jet deburring as claimed in claim 1, wherein the burr characteristic dimension in the step one is a ratio of a burr height to a burr thickness, and the burr characteristic dimension is used as an index for measuring whether the burr is easy to remove.
3. The method for determining the machining parameters of the cylinder cover oil passage based on the high-pressure water jet deburring as claimed in claim 2, wherein in the first step,
(1) carrying out a drilling experiment of the cylinder head oil passage hole according to technological parameters (cutting speed and feeding amount) applied in actual production, measuring the burr degree and the burr thickness of the through hole after the experiment, establishing a mathematical model between the characteristic size of the burr and the processing parameters by using an exponential formula, wherein the fitting formula is
Figure FDA0002552235310000025
Figure FDA0002552235310000026
Wherein a is the burr height, b is the burr thickness, v is the cutting speed, f is the feed per tooth, and the data are recordedSubstituting, the obtained formula is a 2438v-0.617f0.101…(3),b＝4490v-0.445f0.923…(4)；
(2) After the empirical model is established, the effectiveness of the empirical model is checked, and a remarkable linear relation exists between the cutting parameters and the burr sizes, and the formula is
Figure FDA0002552235310000021
Wherein R is2As the ratio of the regression sum of squares to the total sum of squared deviations,
Figure FDA0002552235310000022
for the values that are fitted to the samples,
Figure FDA0002552235310000023
is the sample average value, yiAs actual value of the sample, R2The value is between 0 and 1, the closer to 1, the better the model fitting effect;
(3) according to the mathematical model between the burr characteristic dimension (burr height, burr thickness) and the cutting parameter of the mutual through hole that establish, define the ratio of burr height and burr thickness as the characteristic dimension of burr, regard burr characteristic dimension as the index whether burr is got rid of easily, can obtain the formula (promptly the empirical model):
Figure FDA0002552235310000024
eta is the characteristic size of the burr, the larger the characteristic size eta of the burr is, the larger the height a of the burr is, the smaller the thickness b of the burr is, and the easier the burr is to remove.
4. The method for determining the machining parameters of the cylinder head oil passage based on the high-pressure water jet deburring as claimed in claim 1, wherein in the second step, firstly, a three-dimensional model of the high-pressure water jet nozzle is established according to a drawing, the pressure of the water jet outlet is determined by ANSYS Fluent simulation when the jet angle, the peripheral angle and the notch width are shot, and the nozzle parameters are optimized by optimizing the parameters of the jet angle, the peripheral angle and the notch width when the high-pressure water jet is cleaned; secondly, the optimized nozzle is used for simulating the pressure of the water jet outlet under different water jet loads.
5. The method for determining the cylinder head oil passage machining parameter based on the high-pressure water jet deburring as claimed in claim 1, wherein in the fourth step, in abaqus software, parts and burrs are divided by area sweep through a hexahedral cell type, which is C3D 6.
6. The method for determining the cylinder head oil passage machining parameters based on the high-pressure water jet deburring as claimed in claim 1, wherein in step five, the regression model is y-3.81-0.012 x +1.28 x 10-5x2Wherein x is the water jet load and y is the ratio of the burr height to the burr thickness.
7. The method for determining the cylinder head oil passage machining parameter based on the high-pressure water jet deburring as claimed in claim 1, wherein in the sixth step, if the burr in the simulation breaks, the burr of the intersecting hole can be removed, and if the burr in the simulation does not break, the burr of the intersecting hole cannot be removed.
CN202010578581.2A 2020-06-23 2020-06-23 Cylinder cover oil duct machining parameter determination method based on high-pressure water jet deburring Pending CN111931300A (en)

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