A blade leading and trailing edge radial milling tool path planning method, system and storage medium

Abstract

The present invention relates to a method for planning radial milling tool paths for the leading and trailing edges of a blade, comprising the steps of S1, obtaining a blade surface in a preset blade disk model and establishing a UV coordinate system in the blade surface; S2, dividing the leading edge region and the trailing edge region; S3, configuring machining tools for the leading and trailing edge regions; S4, obtaining radial tool path location points for the leading and trailing edge regions based on preset machining tool parameters and the number of tool paths in the leading and trailing edge regions using a discrete parameter line offset method; S5, calculating the non-interference tool axis vector corresponding to each tool location point in each tool location point set; and S6, connecting each tool location point in each tool location point set with the corresponding non-interference tool axis vector in the order of radial milling. The method constructs radial tool path location points for the leading and trailing edge regions based on the discrete parameter line offset method, thereby improving the smoothness of the radial milling tool path; and further constructs radial milling tool paths for the leading and trailing edges of the blade based on the non-interference tool axis vector, thereby improving machining accuracy.

Description

Technical Field

[0001] The present invention relates to the field of milling manufacturing technology, and in particular to a method, system and storage medium for planning radial milling tool paths for leading and trailing edges of a blade. Background Art

[0002] The integral blade disc is a key component of an aircraft engine. Its blades are designed as free-form surfaces. The processing quality of the blades is related to the overall performance of the engine blade disc during operation, especially the leading and trailing edge areas of the blades. The quality of the leading and trailing edge processing directly affects the aerodynamic performance of the entire blade disc and determines the engine's operating efficiency.

[0003] For machining the leading and trailing edges of blades, the optimal method is to perform radial milling of these areas separately to effectively avoid overcutting caused by drastic changes in the tool axis vector in these areas, thereby improving blade machining accuracy. There are currently two commonly used methods for tool path planning for machining the leading and trailing edge surfaces of blades: one is to obtain the contact point by intersecting isoparametric lines or layers on the surface, and then shift the contact point along the normal to the tool radius to obtain the tool position point; the other is to offset the surface by the tool radius and then plan the tool position point on the offset surface by intersecting isoparametric lines or layers.

[0004] However, (1) the method of obtaining the contact points on the leading and trailing edge surfaces by isoparametric lines or layered intersections and then moving the tool radius along the surface normal is difficult to ensure the smoothness of the tool position points due to the small leading and trailing edge radii of the blade surface and the distortion of the surface, and the large fluctuation of the normal direction of each point; (2) the method of planning the tool path by offsetting the leading and trailing edge surfaces is difficult to ensure the smoothness of the offset surface quality of the leading and trailing edge surfaces due to the large distortion of the leading and trailing edge surfaces and the larger tool radius than the leading and trailing edge radius. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a radial milling tool path planning method, system and storage medium for the leading and trailing edges of blades. The method constructs radial tool path position point sets in the leading edge area and the trailing edge area based on the discrete parameter line offset method, thereby improving the smoothness of the radial milling tool path; based on the non-interference tool axis vector, the radial milling tool path of the leading and trailing edges of the blades in the blade disk is further constructed, thereby improving the processing accuracy.

[0006] In order to solve the above technical problems, the present invention provides a method for planning radial milling tool paths for the leading and trailing edges of blades, comprising: S1, obtaining a blade surface in a preset blade disk model, and establishing a UV coordinate system in the blade surface; S2, based on the UV coordinate system, dividing a leading edge region and a trailing edge region from each of the blade surfaces; S3, configuring machining tools for the leading edge region and the trailing edge region; S4, based on a discrete parameter line offset method, obtaining a radial tool path tool position point set for the leading edge region and the trailing edge region according to the preset parameters of the machining tool and the number of tool paths in the leading edge region and the trailing edge region; S5, at each tool position point in each of the tool position point sets, performing an interference check between the machining tool geometry and the blade surface, and calculating the interference-free tool axis vector corresponding to each tool position point in each of the tool position point sets; S6, connecting each tool position point in each of the tool position point sets with the corresponding interference-free tool axis vector in the order of radial milling machining to form a radial milling tool path for the leading and trailing edges of the blade in the overall blade disk model.

[0007] Preferably, obtaining the radial tool path location point set in the leading edge area and the radial tool path location point set in the trailing edge area specifically includes: constructing the equal V parameter line stretching surface of the leading edge area tool path, the equal V parameter line stretching surface of the trailing edge area tool path and the equal U offset line cluster of the blade based on the UV coordinate system; intersecting the equal V parameter line stretching surface of the leading edge area tool path with the equal U offset line cluster of the blade, and the obtained intersection is the tool location point set of the radial tool path in the leading edge area; intersecting the equal V parameter line stretching surface of the trailing edge area tool path with the equal U offset line cluster of the blade, and the obtained intersection is the tool location point set of the radial tool path in the trailing edge area.

[0008] Preferably, constructing the iso-V parameter line stretching surface of the tool path in the leading edge area specifically includes: a1. Based on the UV coordinate system, obtaining the V parameter interval [v1, v2] of the leading edge area, and obtaining the corresponding parameter vk of each tool path in the V parameter interval of the leading edge area according to the equidistant principle (v1≦vk≦v2, k∈[1,n]); a2. Obtaining the iso-V parameter line Ck corresponding to the corresponding parameter vk in the blade surface, and calculating the comprehensive normal vector Nk of the iso-V parameter line Ck; a3. Stretching the iso-V parameter line Ck along the comprehensive normal vector Nk to obtain the iso-V parameter line stretching surface of the corresponding parameter vk; a4. Executing steps a2 and a3 for all corresponding parameters in [v1, v2] in sequence to obtain the iso-V parameter line stretching surfaces of all corresponding parameters in [v1, v2]; The iso-V parameter line stretching surface of the tool path in the leading edge area is constructed based on the iso-V parameter line stretching surfaces of all corresponding parameters.

[0009] Preferably, constructing the equal-U bias line cluster of the blade specifically includes: b1, selecting an equal-U parameter line in the UV coordinate system, and determining the U parameter sequence Us of each blade discretized according to the equal-U parameter line in the UV coordinate system based on the chord height error control method, wherein S represents the number of discrete parameter lines; b2, taking Ui (i∈[1,s]) from Us to obtain the equal-U parameter line Ci, and discretizing the equal-U parameter line Ci into a point set according to the chord height error; obtaining the normal of all points in the discrete point set on the blade, and calculating the bias points corresponding to all points in the discrete point set according to the normal; b3, re-interpolating all bias points of the discrete point set of the equal-U parameter line Ci into a curve to obtain the bias curve Coi of the equal-U parameter line Ci; b4, executing b2 and b3 on all U values ​​in the U parameter sequence Us in turn to obtain the bias curves of all equal-U parameter lines, and constructing the bias curves of all equal-U parameter lines to form the equal-U bias line cluster of the blade.

[0010] Preferably, a blade basin area, a blade back area, a leading edge area and a blade back area are divided from each of the blade surfaces, specifically comprising: based on the UV coordinate system, taking an equal U parameter line in the blade surface, and extracting four dividing points P1, P2, P3, P4 of the leading edge, trailing edge, blade basin and blade back in the blade surface according to the curvature change of the blade surface; projecting the dividing points P1, P2, P3, P4 onto the blade surface to obtain V parameters v1, v2, v3, v4 corresponding to the four dividing points on the blade; taking four equal V parameter lines corresponding to the V parameters v1, v2, v3, v4 in sequence, and dividing the blade surface into four parts: a blade basin area, a blade back area, a leading edge area and a trailing edge area based on the four equal V parameter lines; defining the V parameter interval of the leading edge area as [v1, v2], and the V parameter interval of the trailing edge area as [v3, v4].

[0011] Preferably, the integral blade disk model is in igs or step format.

[0012] Preferably, the blisk surface of the blisk model includes a blade surface, a hub surface and a shroud surface.

[0013] A blade leading and trailing edge radial milling tool path planning system, characterized in that it includes: a data import module, which is used to import an overall blade disk model and set the number of blades in the blade disk model, and the data import module establishes a UV coordinate system in the blade surface in the blade disk model; an area division module, which is used to divide the blade surface into a blade basin area, a blade back area, a leading edge area and a trailing edge area; a tool configuration module, which is used to configure the processing tools of the leading edge area and the trailing edge area, and preset the parameters of the processing tools, the tool path of the leading edge area and the tool path of the trailing edge area; a tool position point set acquisition module, which is used to obtain the tool position point set of the processing tool in the radial tool path of the leading edge area and the tool position point set of the radial tool path of the trailing edge area; a milling tool path formation module, which is used to calculate the non-interference tool axis vector corresponding to each tool position point in each tool position point set, and construct the radial milling tool path of the leading and trailing edges of the blades in the overall blade disk according to the non-interference tool axis vector.

[0014] Preferably, the parameters of the machining tool include radius r, feed F and rotation speed S.

[0015] A computer-readable storage medium stores instructions, which, when executed by a processor, execute the method for planning tool paths for radial milling of leading and trailing edges of a blade.

[0016] The above technical solution of the present invention has the following advantages over the prior art:

[0017] 1. The present invention is based on the discrete parameter line offset method, which can obtain the radial tool path position point set of the machining tool in the leading edge area and the trailing edge area, avoiding the traditional blade surface offset, making the radial milling tool path of the leading and trailing edges of the blade smoother, and facilitating subsequent further processing.

[0018] 2. The present invention performs interference check on the geometry of the machining tool and the blade surface at each tool position point in each tool position point concentration, calculates the interference-free tool axis vector corresponding to each tool position point in each tool position point concentration based on the bisection iteration method, obtains the interference-free tool axis, and forms the radial milling tool path of the leading and trailing edges of the blade, thereby improving the subsequent milling processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 Schematic diagram of the tool path planning method of the present invention;

[0021] Figure 2 Schematic diagram of the structure of the blisk model of the present invention;

[0022] Figure 3Schematic diagram of the division of the leading edge area and the trailing edge area of ​​the blade curved surface of the present invention;

[0023] Figure 4 This is a schematic diagram of the intersection of the iso-V parameter line stretching surface and the iso-U offset line cluster of the blade.

[0024] Explanation of the reference numerals in the specification: 10 - blade surface, 20 - shroud surface, 30 - hub surface, 40 - blade rotation axis, 101 - leading edge region, 102 - trailing edge region, 103 - tool position point, 104 - equal V parameter line stretching surface, 105 - equal U offset line cluster of the blade. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0026] Reference Figures 1-4 As shown, the present invention discloses a blade leading and trailing edge radial milling tool path planning method, referring to Figure 1 As shown, it mainly includes the following steps:

[0027] Step 1: Import the blisk model, set the number of blades in the blisk model to m, and set the blisk model to igs or step format. Specify the relevant features of the blisk model, select the corresponding surfaces, and define them as: blade surface 10, hub surface 30, and shroud surface 20. Obtain blade surface 10 from the blisk model and establish a UV coordinate system for it. Normalize the U and V parameter directions of the blades, denote the blade U parameter interval as [umin,umax] and the blade V parameter interval as [vmin,vmax].

[0028] Step 2: Reference Figure 2 As shown, each blade curved surface 10 is divided into a blade basin area, a blade back area, a leading edge area 101 and a trailing edge area 102 .

[0029] Specifically: (1) Based on the UV coordinate system, an equal U parameter line (such as u=umax) is taken on the blade surface 10, and the four dividing points P1, P2, P3, and P4 of the leading edge, trailing edge, blade basin, and blade back in the blade surface 10 are extracted according to the curvature change of the blade surface 10.

[0030] (2) Project the four dividing points P1, P2, P3, and P4 onto the blade to obtain the V parameters v1, v2, v3, and v4 corresponding to the four dividing points on the blade.

[0031] (3) Take four equal V parameter lines corresponding to V parameters v1, v2, v3, and v4, and divide the blade surface 10 into four parts: the blade basin area, the blade back area, the leading edge area 101, and the trailing edge area 102. Figure 3 As shown, the edge surface in the negative direction of the blade disk rotating axis 40 is defined as the leading edge region 101, and the V parameter interval of the leading edge region 101 is recorded as [v1, v2]. The edge surface in the positive direction of the rotating axis is defined as the trailing edge region 102, and the V parameter interval of the trailing edge region 102 is recorded as [v3, v4].

[0032] Step 3: Set the machining tools for the leading edge region 101 and the trailing edge region 102, preset the machining tool parameters, and the number of tool paths for the leading edge region 101 and the trailing edge region 102. Set the radius of the machining tool to r, and set the number of tool paths to n.

[0033] Step 4: Based on the discrete parameter line offset method and the preset tool path numbers of the leading edge area 101 and the trailing edge area 102, further obtain the radial tool path location point set of the machining tool in the leading edge area 101 and the radial tool path location point set in the trailing edge area 102.

[0034] Reference Figure 4 Specifically, based on the UV coordinate system, a constant V parameter line extrusion surface 104 of the leading edge region tool path, a constant V parameter line extrusion surface of the trailing edge region 102 tool path, and a constant U offset line cluster 105 of the blade are constructed. The constant V parameter line extrusion surface 104 of the leading edge region tool path and the constant U offset line cluster 105 of the blade are intersected, and the obtained intersection is the tool location point set of the radial tool path in the leading edge region. The constant V parameter line extrusion surface of the trailing edge region 102 tool path and the constant U offset line cluster 105 of the blade are intersected, and the obtained intersection is the tool location point set of the radial tool path in the trailing edge region 102.

[0035] The method of constructing the iso-V parameter line stretching surface 104 of the tool path of the leading edge region 101 specifically includes the following steps:

[0036] (a1) Based on the above-mentioned UV coordinate system and the V parameter interval [v1, v2] of the leading edge region 101, the corresponding parameter vk of each tool path in the V parameter interval of the leading edge region 101 is obtained according to the equidistance principle (v1≦vk≦v2, k∈[1,n]).

[0037] (a2) Obtaining the iso-V parameter line Ck corresponding to the corresponding parameter vk on the blade surface 10 from the blade surface 10, discretizing the iso-V parameter line Ck into a number of points, and obtaining the normal vector of each point on the blade, and the sum of the vectors is used as the comprehensive normal Nk of the iso-V parameter line.

[0038] (a3) Stretch the constant V parameter line Ck along the integrated normal vector Nk to obtain the constant V parameter line stretched surface 104 corresponding to the parameter vk.

[0039] (a4) Execute steps a2 and a3 for all corresponding parameters in the V parameter interval [v1, v2] of the leading edge region 101 in sequence to obtain an iso-V parameter line stretching surface 104 of all corresponding parameters in [v1, v2], and construct an iso-V parameter line stretching surface 104 of the tool path of the leading edge region 101 based on the iso-V parameter line stretching surface 104 of all corresponding parameters.

[0040] Among them, the construction method of the iso-V parameter line stretching surface of the tool path in the trailing edge area 102 is consistent with the construction method of the iso-V parameter line stretching surface 104 of the tool path in the leading edge area 101 mentioned above, and will not be repeated here.

[0041] Furthermore, constructing the above blade equal U offset line cluster 105 specifically includes the following steps:

[0042] (b1) Select an equal U parameter line in the UV coordinate system. According to the chord height error control method, determine the U parameter sequence Us of each blade discretized along the equal U parameter line in the UV coordinate system, where S represents the number of discrete parameter lines.

[0043] (b2) Take ui(i∈[1,s]) from Us to obtain the iso-U parameter line Ci. Discretize the iso-U parameter line Ci into a point set according to the chord height error. For all points P of the discrete point set of the iso-U parameter line Ci, take their normal direction on the blade and record it as N, and calculate the corresponding offset point P offset =P+r×N.

[0044] (b3) All the offset points P of the discrete point set of the equal U parameter line Ci are offset Re-interpolate the curve to obtain the bias curve Coi of the equal U parameter line Ci.

[0045] (b4) Execute b2 and b3 for all U values ​​in the U parameter sequence Us in sequence to obtain the bias curves of all equal U parameter lines, and construct the bias curves of all equal U parameter lines to form an equal U bias line cluster 105 of the blade.

[0046] Step 5: At each tool position point 103 in the tool position point set, perform interference check on the tool geometry and the blade surface 10. Based on the initial tool axis, take the tool axis of the previous tool position point 103 in the radial tool path, and iteratively calculate the interference-free tool axis vector corresponding to each tool position point 103 using the bisection method.

[0047] Step 6: Connect each tool position point 103 in each tool position point set with the corresponding non-interference tool axis vector in sequence according to the order of radial milling processing to form a radial milling tool path for the leading and trailing edges of the blades in the blisk.

[0048] This method constructs radial tool path location point sets in the leading edge region 101 and the trailing edge region 102 based on the discrete parameter line offset method, thereby improving the smoothness of the radial milling tool path. Based on the non-interference tool axis vector, the radial milling tool path of the leading and trailing edges of the blades in the blisk is further constructed, thereby improving the machining accuracy.

[0049] Based on the above-mentioned radial milling tool path planning method for the leading and trailing edges of blades, the present invention also proposes a radial milling tool path planning system for the leading and trailing edges of blades to improve the smoothness of the milling tool path and enhance the machining accuracy.

[0050] The above blade leading and trailing edge radial milling tool path planning system includes: a data import module, an area division module, a tool configuration module, a tool location point set acquisition module and a milling tool path formation module.

[0051] The data import module is used to import the entire blade disk model and set the number of blades in the blade disk model. The data import module establishes a UV coordinate system in the blade surface 10 in the blade disk model.

[0052] The region division module is used to divide each blade curved surface 10 into a blade basin region, a blade back region, a leading edge region 101 and a trailing edge region 102 .

[0053] The tool configuration module is used to configure the machining tools for the leading edge region 101 and the trailing edge region 102, and preset the machining tool parameters, the tool path for the leading edge region 101, and the tool path for the trailing edge region 102. The machining tool parameters include radius r, feed F, and rotation speed S.

[0054] The tool location point set acquisition module is used to acquire the tool location point set of the radial tool path of the machining tool in the leading edge area 101 and the tool location point set of the radial tool path of the machining tool in the trailing edge area 102 .

[0055] The milling tool path forming module is used to calculate the non-interference tool axis vector corresponding to each tool location point 103 in each tool location point set, and construct the radial milling tool path of the leading and trailing edges of the blades in the integral blade disk according to the non-interference tool axis vector.

[0056] The present invention also discloses a computer-readable storage medium, in which instructions are stored. When the instructions are executed by a processor, the above-mentioned radial milling tool path planning method for the leading and trailing edges of a blade is executed.

[0057] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A method for planning radial milling tool paths for leading and trailing edges of blades, characterized in that: The following steps are involved: S1. Obtain a blade surface in a preset blade disk model, and establish a UV coordinate system in the blade surface; S2. Based on the UV coordinate system, dividing the leading edge region and the trailing edge region from each of the blade curved surfaces; S3, configuring machining tools for the leading edge area and the trailing edge area; S4. Based on the discrete parameter line offset method, and according to the preset parameters of the machining tool, the number of tool paths in the leading edge area and the trailing edge area, obtaining the radial tool path location point set of the leading edge area and the trailing edge area; including: based on the UV coordinate system, constructing the equal V parameter line stretching surface of the leading edge area tool path, the equal V parameter line stretching surface of the trailing edge area tool path and the equal U offset line cluster of the blade; intersecting the equal V parameter line stretching surface of the leading edge area tool path with the equal U offset line cluster of the blade, and obtaining the intersection point as the tool location point set of the radial tool path of the leading edge area; intersecting the equal V parameter line stretching surface of the trailing edge area tool path with the equal U offset line cluster of the blade, and obtaining the intersection point as the tool location point set of the radial tool path of the trailing edge area; S5. At each tool position point in each tool position point set, performing interference check between the machining tool geometry and the blade surface, and calculating the interference-free tool axis vector corresponding to each tool position point in each tool position point set; S6. Connecting each tool position point in each tool position point set with the corresponding non-interference tool axis vector in sequence according to the order of radial milling processing to form a radial milling tool path for the leading and trailing edges of the blades in the integral blisk model.

2. The method for planning a radial milling path for the leading and trailing edges of a blade according to claim 1, characterized in that: Constructing the iso-V parameter line stretching surface of the leading edge area tool path specifically includes: a1. Based on the UV coordinate system, obtain the V parameter interval [v1, v2] of the leading edge region, and obtain the corresponding parameter vk of each tool path within the V parameter interval of the leading edge region according to the equidistance principle, where v1≤vk≤v2, k∈[1,n], where n is the number of tool paths; a2. Obtain the iso-V parameter line Ck corresponding to the corresponding parameter vk in the blade surface, and calculate the comprehensive normal vector Nk of the iso-V parameter line Ck; a3. Stretch the iso-V parameter line Ck along the integrated normal vector Nk to obtain the iso-V parameter line stretched surface corresponding to the parameter vk; a4. Execute steps a2 and a3 for all corresponding parameters in [v1, v2] in sequence to obtain the iso-V parameter line stretching surface of all corresponding parameters in [v1, v2]; construct the iso-V parameter line stretching surface of the tool path in the leading edge area based on the iso-V parameter line stretching surface of all corresponding parameters.

3. The method for planning a radial milling path for the leading and trailing edges of a blade according to claim 1, wherein: Constructing the equal U offset line cluster of the blade specifically includes: b1. Selecting an equal U parameter line in the UV coordinate system, and determining a discrete U parameter sequence Us of each blade in the UV coordinate system according to the equal U parameter line based on a chord height error control method, where s represents the number of discrete parameter lines; b2. Take Ui,i∈[1,s] from Us, obtain the corresponding iso-U parameter line Ci, discretize the iso-U parameter line Ci into a point set according to the chord height error, obtain the normal of all points in the discrete point set on the blade, and calculate the offset points corresponding to all points in the discrete point set based on the normal; b3. Re-interpolating all bias points in the discrete point set of the equal U parameter line Ci into a curve to obtain a bias curve Coi of the equal U parameter line Ci; b4. Execute b2 and b3 for all U values ​​in the U parameter sequence Us in sequence to obtain the bias curves of the equal U parameter lines corresponding to all U values ​​in the U parameter sequence Us, and construct the bias curves of the equal U parameter lines corresponding to all U values ​​into an equal U bias line cluster of the blade.

4. The method for planning a radial milling path for the leading and trailing edges of a blade according to claim 1, wherein: Dividing the leading edge region and the trailing edge region from each blade curved surface specifically includes: Based on the UV coordinate system, an equal U parameter line is taken on the blade surface, and four dividing points P1, P2, P3, and P4 of the leading edge, trailing edge, blade basin, and blade back on the blade surface are extracted according to the curvature change of the blade surface; Projecting the demarcation points P1, P2, P3, and P4 onto the blade surface to obtain V parameters v1, v2, v3, and v4 corresponding to the four demarcation points on the blade; Take four equal V parameter lines corresponding to V parameters v1, v2, v3, and v4 respectively, and divide the blade surface into four parts: blade basin area, blade back area, leading edge area, and trailing edge area based on the four equal V parameter lines; define the V parameter interval of the leading edge area as [v1, v2], and the V parameter interval of the trailing edge area as [v3, v4].

5. The method for planning a radial milling path for the leading and trailing edges of a blade according to claim 1, wherein: The blisk model is in igs or step format.

6. The method for planning a radial milling path for the leading and trailing edges of a blade according to claim 1, characterized in that: The blisk surface of the blisk model includes a blade surface, a hub surface and a shroud surface.

7. A blade leading and trailing edge radial milling tool path planning system, characterized in that: include: A data import module, which is used to import the entire blade disk model and set the number of blades in the blade disk model, and the data import module establishes a UV coordinate system within the blade surface in the blade disk model; A region division module, which is used to divide each blade curved surface into a blade basin region, a blade back region, a leading edge region and a trailing edge region; a tool configuration module, which is used to configure the machining tools for the leading edge area and the trailing edge area, and preset the parameters of the machining tools, the tool path for the leading edge area, and the tool path for the trailing edge area; A tool location point set acquisition module is used to acquire the tool location point set of the radial tool path in the leading edge region and the tool location point set of the radial tool path in the trailing edge region of the machining tool; comprising: constructing, based on the UV coordinate system, an iso-V parameter line stretching surface of the tool path in the leading edge region, an iso-V parameter line stretching surface of the tool path in the trailing edge region, and an iso-U offset line cluster of the blade; intersecting the iso-V parameter line stretching surface of the tool path in the leading edge region with the iso-U offset line cluster of the blade, and obtaining an intersection point as the tool location point set of the radial tool path in the leading edge region; intersecting the iso-V parameter line stretching surface of the tool path in the trailing edge region with the iso-U offset line cluster of the blade, and obtaining an intersection point as the tool location point set of the radial tool path in the trailing edge region; The milling tool path forming module is used to calculate the non-interference tool axis vector corresponding to each tool position point in each tool position point set, and connect each tool position point in each tool position point set and the corresponding non-interference tool axis vector in the order of radial milling processing to construct a radial milling tool path for the leading and trailing edges of the blades in the integral blade disk.

8. The blade leading and trailing edge radial milling tool path planning system according to claim 7, characterized in that: The parameters of the machining tool include radius r, feed F and rotation speed S.

9. A computer-readable storage medium storing instructions, wherein when the instructions are executed by a processor, the method for planning tool paths for radial milling of leading and trailing edges of a blade according to any one of claims 1 to 6 is executed.

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