Drill bit chamfering method and device, electronic equipment and storage medium

Abstract

The application relates to a drill chamfer processing method and device, electronic equipment and a storage medium. The method comprises the following steps: determining a circumferential intersection line between a drill tip plane and an outer cylindrical surface of a drill; wherein a to-be-processed region corresponding to a chamfer structure on the drill comprises at least part of the circumferential intersection line; determining a target intersection line point in the to-be-processed region from the circumferential intersection line; determining pose data of a grinding tool according to the target intersection line point and geometric parameters of the chamfer; and controlling the grinding tool to process the chamfer at the target intersection line point according to the pose data. The method can improve the processing efficiency of the drill chamfer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical manufacturing, and in particular, to a machining method and device for a drill chamfer, an electronic device, and a storage medium. BACKGROUND

[0002] In the field of mechanical manufacturing, a drill of a tool is mainly used to drill a through hole or a blind hole in a solid material, and the design and manufacturing process of the drill is crucial. The drill chamfer, i.e., a slight angle adjustment at the outer circumference of the drill, can effectively reduce stress concentration during cutting and cutting resistance, thereby slowing down the wear rate of the tool.

[0003] In the conventional technology, the machining of the drill chamfer relies on experienced workers to manually grind, which is very limited, resulting in low machining efficiency of the drill chamfer. SUMMARY

[0004] Therefore, it is necessary to provide a machining method and device for a drill chamfer, an electronic device, and a storage medium, which can improve the efficiency.

[0005] In a first aspect, the present application provides a machining method for a drill chamfer, comprising:

[0006] determining a circumferential intersection line between a drill tip plane and an outer cylindrical surface of the drill; wherein a to-be-machined region corresponding to a chamfer structure on the drill includes at least part of the circumferential intersection line;

[0007] determining a target intersection point in the to-be-machined region from the circumferential intersection line;

[0008] determining pose data of a grinding tool according to the target intersection point and geometric parameters of the chamfer;

[0009] controlling the grinding tool to machine the chamfer at the target intersection point according to the pose data.

[0010] In a second aspect, the present application further provides a machining device for a drill chamfer, comprising:

[0011] a first determining module configured to determine a circumferential intersection line between a drill tip plane and an outer cylindrical surface of the drill; wherein a to-be-machined region corresponding to a chamfer structure on the drill includes at least part of the circumferential intersection line;

[0012] a second determining module configured to determine a target intersection point in the to-be-machined region from the circumferential intersection line;

[0013] a pose determining module configured to determine pose data of a grinding tool according to the target intersection point and geometric parameters of the chamfer;

[0014] a machining module configured to control the grinding tool to machine the chamfer at the target intersection point according to the pose data.

[0015] In a third aspect, the present application provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the method described above.

[0016] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps in the method described above.

[0017] In a fifth aspect, the present application provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps in the method described above.

[0018] The drill chamfer processing method, device, electronic device, storage medium and computer program product described above determine a circumferential intersection line between a drill tip plane and an outer cylindrical surface of a drill. During use of a tool, the circumferential intersection line on the drill increases friction with a workpiece, resulting in greater cutting resistance, easier tool wear, and shorter tool service life. Therefore, at least part of the circumferential intersection line needs to be processed with a chamfer to reduce the cutting resistance at the circumferential intersection line. The chamfer structure on the drill corresponds to a to-be-processed region including at least part of the circumferential intersection line. A target intersection point in the to-be-processed region is determined from the circumferential intersection line. Then, pose data of a grinding tool is determined according to the target intersection point and geometric parameters of the chamfer, and the pose data can ensure that the chamfer processed by the grinding tool at the target intersection point meets the geometric parameters. Therefore, the grinding tool is controlled to process the chamfer at the target intersection point according to the pose data, which can automatically process the chamfer meeting the geometric parameters at the target intersection point. Compared with manual grinding, the processing efficiency of the drill chamfer is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A flowchart of a drill chamfer processing method provided by an embodiment of the present application.

[0020] Figure 2 A schematic diagram of a planar region on a drill provided by an embodiment of the present application.

[0021] Figure 3 A schematic diagram of an end point of a circumferential intersection line provided by an embodiment of the present application.

[0022] Figure 4 A schematic diagram of distribution of end points on circumferential intersection lines provided by an embodiment of the present application.

[0023] Figure 5 A schematic diagram of a planar clearance angle and a planar relief angle provided by an embodiment of the present application.

[0024] Figure 6A schematic diagram of a tool face parameter in a workpiece coordinate system is provided for an embodiment of the present application.

[0025] Figure 7 A schematic diagram of a tool face parameter and a parameter of a region to be machined in a workpiece coordinate system is provided for another embodiment of the present application.

[0026] Figure 8 A perspective view and a top view of a grinding wheel machining a chamfer at a target intersection point are provided for an embodiment of the present application.

[0027] Figure 9 A schematic diagram of a simulation result is provided for an embodiment of the present application.

[0028] Figure 10 A structural block diagram of a machining device of a drill chamfer is provided for an embodiment of the present application.

[0029] Figure 11 An internal structure diagram of an electronic device is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0031] In an exemplary embodiment, as shown in Figure 1 , a machining method of a drill chamfer is provided, which is described by taking an electronic device as an example. The electronic device can include at least one of a terminal, a server or a numerical control machine. The above method includes the following steps 102 to 108. Wherein:

[0032] Step 102, determining a circumferential intersection line between a drill tip plane and an outer cylindrical surface of the drill; wherein the region to be machined corresponding to the chamfer structure on the drill includes at least part of the circumferential intersection line.

[0033] Wherein, the chamfer structure at the outer circumference of the drill is an important component structure of the tool. The drill tip plane refers to the plane in which the planar region on the drill is located. The outer cylindrical surface of the drill refers to the cylindrical surface at the outer diameter of the drill. It can be understood that the outer diameter of the drill is the diameter of the bottom surface of the cylindrical surface corresponding to the outer cylindrical surface of the drill. Assuming that the outer diameter of the drill is D, then the equation of the outer cylindrical surface of the drill can be but is not limited to Wherein, (x si , y si) is a point on the outer cylindrical surface of the drill bit. The circumferential intersection line is the intersection line between the drill tip plane and the outer cylindrical surface of the drill bit. The region to be processed is used to indicate the region of the chamfer structure on the drill bit. It can be understood that after the chamfer is processed at each target intersection point, a chamfer structure will be formed on the outer circumference of the flat region on the drill bit.

[0034] Exemplarily, as shown in Figure 2 , a schematic diagram of the flat region on the drill bit is provided. The flat region on the drill bit can include at least one of the first relief surface S11 of the outer blade, the second relief surface S12 of the outer blade, the drill tip relief surface S2, the inner blade relief surface S3, or the flow guide surface S4. It can be understood that the drill tip plane can include at least one of the plane where the first relief surface of the outer blade is located, the plane where the second relief surface of the outer blade is located, the plane where the drill tip relief surface is located, the plane where the inner blade relief surface is located, or the plane where the flow guide surface is located. The electronic device can obtain the relief surface parameters of the drill bit. The relief surface parameters of the drill bit can reflect the drill tip plane of the drill bit and the outer cylindrical surface of the drill bit. The electronic device can determine the circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit according to the relief surface parameters.

[0035] In some embodiments, the drill bit can be a drill bit of a gun drill. The gun drill is an effective deep hole machining tool. The gun drill can be but is not limited to a flat gun drill. It can be understood that the method provided by the present application is applicable to tool drill bits with drill tips generated by the intersection of each flat region, and is not limited to drill bits of gun drills.

[0036] In some embodiments, the electronic device can obtain the circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit. It can be understood that the circumferential intersection line can be pre-set in the electronic device or input externally into the electronic device.

[0037] In some embodiments, the electronic device can determine a feature point in the drill tip plane and a normal vector of the drill tip plane according to the relief surface parameters. The plane equation of the drill tip plane is determined according to the feature point in the drill tip plane and the normal vector of the drill tip plane. The electronic device can determine the cylindrical surface equation of the outer cylindrical surface of the drill bit according to the outer diameter parameter in the relief surface parameters. The outer diameter parameter is used to represent the outer diameter of the drill bit, that is, the diameter of the cylindrical bottom surface corresponding to the outer cylindrical surface of the drill bit. The circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit is determined according to the cylindrical surface equation and the plane equation of the drill tip plane.

[0038] Step 104, determining a target intersection point located in the region to be processed from the circumferential intersection line.

[0039] Wherein, the target intersection point is used to indicate the position of the chamfer on the drill bit.

[0040] In some embodiments, the electronic device can obtain the parameters of the region to be processed. The target intersection point matching the parameters of the region to be processed is determined from the circumferential intersection line.

[0041] In some embodiments, the electronic device can determine the first end point parameter and the second end point parameter according to the parameters of the region to be machined. A target intersection point matching the first end point parameter and the second end point parameter is determined from the intersection line of the circumference. The first end point parameter and the second end point parameter correspond to two ends of at least part of the intersection line of the circumference in the region to be machined, respectively.

[0042] In some embodiments, the parameters of the region to be machined can include the first end point parameter and a region size parameter. The electronic device can determine the second end point parameter according to the first end point parameter and the region size parameter. The parameters of the region to be machined can also include the first end point parameter and the second end point parameter.

[0043] In step 106, the pose data of the grinding tool is determined according to the target intersection point and the geometric parameter of the chamfer.

[0044] The geometric parameter of the chamfer is used to represent the geometric feature of the chamfer. The pose data is used to represent the position and attitude of the grinding tool when machining the chamfer at the target intersection point.

[0045] It can be understood that if the pose of the grinding tool relative to the target intersection point is different when the grinding tool machines the chamfer at the target intersection point, the geometric feature of the chamfer machined at the target intersection point is different. Therefore, the geometric parameter of the chamfer actually reflects the pose of the grinding tool relative to the target intersection point, and the electronic device can determine the pose data of the grinding tool according to the target intersection point and the geometric parameter of the chamfer.

[0046] It should be noted that in the present embodiment, the specific geometric parameter of the chamfer is not limited, as long as the geometric parameter of the chamfer can reflect the pose of the grinding tool relative to the target intersection point.

[0047] In some embodiments, the electronic device can obtain the geometric parameter of the chamfer.

[0048] In some embodiments, the grinding tool can include a grinding wheel. The geometric parameter of the chamfer can include a chamfer angle. The chamfer angle is used to represent the angle of the normal of the axis of the grinding wheel relative to the outer cylindrical surface of the drill bit at the target intersection point when the grinding wheel machines the chamfer at the target intersection point.

[0049] In some embodiments, the geometric parameter of the chamfer can include a chamfer height. The chamfer height is used to represent the distance between the intersection position of the outer edge of the grinding wheel and the line on the outer cylindrical surface of the drill bit passing through the target intersection point relative to the target intersection point when the grinding wheel machines the chamfer at the target intersection point.

[0050] In step 108, the grinding tool is controlled to machine the chamfer at the target intersection point according to the pose data.

[0051] Exemplarily, the electronic device can adjust the grinding tool to the pose represented by the pose data, and then control the grinding tool in the pose to process the chamfer at the target intersection point.

[0052] In some embodiments, the grinding tool can be, but is not limited to, a grinding wheel.

[0053] In some embodiments, the grinding tool can be a carbide tool or a diamond tool, etc.

[0054] In the processing of the drill chamfer described above, the circumferential intersection between the drill tip plane and the outer cylindrical surface of the drill is determined; during the use of the tool, the circumferential intersection on the drill will increase the friction with the workpiece, resulting in greater cutting resistance and easier tool wear, thus shortening the service life of the tool. Therefore, at least part of the circumferential intersection needs to be processed with a chamfer to reduce the cutting resistance at the circumferential intersection. The region to be processed corresponding to the chamfer structure on the drill includes at least part of the circumferential intersection; a target intersection point located in the region to be processed is determined from the circumferential intersection; and then the pose data of the grinding tool is determined according to the target intersection point and the geometric parameters of the chamfer, which can ensure that the chamfer processed by the grinding tool at the target intersection point meets the geometric parameters, so that the grinding tool is controlled according to the pose data to process the chamfer at the target intersection point, which can automatically process the chamfer meeting the geometric parameters at the target intersection point, thereby improving the processing efficiency of the drill chamfer compared with the manual grinding method.

[0055] In some embodiments, determining the circumferential intersection between the drill tip plane and the outer cylindrical surface of the drill includes: determining each drill tip plane and the outer cylindrical surface of the drill according to the land parameters of the drill; determining the adjacent plane of each drill tip plane from the drill tip planes; and determining the circumferential intersection between the drill tip plane and the outer cylindrical surface of the drill according to the drill tip plane, the outer cylindrical surface of the drill, and the adjacent plane of the drill tip plane; wherein the drill tip plane intersects with the adjacent plane of the drill tip plane at a reference intersection; and the end point on the circumferential intersection includes the intersection of the outer cylindrical surface of the drill and the reference intersection.

[0056] The land parameters include parameters related to the drill tip plane and parameters related to the outer cylindrical surface of the drill, which can reflect the geometric characteristics of the drill tip plane and the outer cylindrical surface of the drill. On the drill, there is no third drill tip plane between the drill tip plane and the adjacent plane of the drill tip plane. It can be understood that if there is no third drill tip plane between two drill tip planes, one of the two drill tip planes is the adjacent plane of the other drill tip plane. For example, as shown in Figure 2The adjacent plane of the plane where the flow guide surface is located can include at least one of the plane where the inner blade relief surface is located or the plane where the first relief surface of the outer blade is located. The adjacent plane of the plane where the inner blade relief surface is located can include at least one of the plane where the drill point relief surface is located or the plane where the flow guide surface is located. The adjacent plane of the plane where the drill point relief surface is located can include at least one of the plane where the second relief surface of the outer blade is located or the plane where the inner blade relief surface is located. The adjacent plane of the plane where the second relief surface of the outer blade is located can include at least one of the plane where the first relief surface of the outer blade is located or the plane where the drill point relief surface is located. The adjacent plane of the plane where the first relief surface of the outer blade is located can include at least one of the plane where the flow guide surface is located or the plane where the second relief surface of the outer blade is located. It should be noted that although there is a flute between the flow guide surface and the first relief surface of the outer blade, that is, a V-shaped angle, there is no third drill point plane between the plane where the flow guide surface is located and the plane where the first relief surface of the outer blade is located, so the plane where the flow guide surface is located and the plane where the first relief surface of the outer blade is located are adjacent.

[0057] In some embodiments, the electronic device can obtain a relief surface parameter of the drill bit. The relief surface parameter can include at least one of a direction-related parameter for describing a geometric direction feature of a drill point plane, or a feature point-related parameter for describing a feature point in the drill point plane, etc. The electronic device can determine the drill point plane according to at least one of the direction-related parameter or the feature point-related parameter of each drill point plane, etc. The relief surface parameter can also include at least one of a drill bit outer diameter parameter for describing a diameter of a cylindrical bottom surface corresponding to a drill bit outer cylindrical surface, or a cylindrical point-related parameter for describing a cylindrical point on the drill bit outer cylindrical surface, etc. The electronic device can determine the drill bit outer cylindrical surface according to at least one of the drill bit outer diameter parameter or the cylindrical point-related parameter, etc.

[0058] In some embodiments, the electronic device can determine a cylindrical equation of the drill bit outer cylindrical surface according to the drill bit outer diameter parameter. It can be understood that in a three-dimensional space, the standard equation of a cylindrical surface is Only the radius R of the bottom surface of the cylindrical surface can determine a cylindrical surface equation. The drill bit outer diameter parameter is essentially the diameter of the cylindrical bottom surface corresponding to the drill bit outer cylindrical surface, so only the drill bit outer diameter parameter can determine the cylindrical equation.

[0059] In some embodiments, the electronic device can determine the cylindrical equation of the drill bit outer cylindrical surface in the workpiece coordinate system according to the drill bit outer diameter parameter. The third coordinate axis, that is, the Z axis, of the workpiece coordinate system is located on the tool axis. And the tool axis is also the central axis of the drill bit outer cylindrical surface, and because the drill bit outer diameter parameter is essentially the diameter of the cylindrical bottom surface corresponding to the drill bit outer cylindrical surface, the cylindrical equation of the drill bit outer cylindrical surface in the workpiece coordinate system is as formula (1).

[0060]

[0061] where (x, y) is a point on the outer cylindrical surface of the drill bit. D is the outer diameter parameter of the drill bit.

[0062] In some embodiments, the adjacent plane of each drill tip plane can be preset. The electronic device can directly determine the adjacent plane of each drill tip plane. The adjacent plane of each drill tip plane can be a plane that satisfies a preset adjacent condition with the relative position of the drill tip plane. The electronic device can determine, from the drill tip planes, a plane that satisfies the preset adjacent condition with the relative position of the drill tip plane, to obtain the adjacent plane of the drill tip plane. The preset adjacent condition can be at least one of no third drill tip plane between the drill tip plane and the adjacent plane, or the drill tip plane and the adjacent plane being located in the next order or the previous order of the arrangement order of the drill tip planes on the drill bit.

[0063] In some embodiments, two end points on the circumferential intersection line are determined according to the drill tip plane, the outer cylindrical surface of the drill bit, and the adjacent plane of the drill tip plane. The circumferential intersection line between the two end points on the circumferential intersection line is determined from the intersection line between the drill tip plane and the outer cylindrical surface of the drill bit. It can be understood that the circumferential intersection line is essentially a line segment on the intersection line between the drill tip plane and the outer cylindrical surface of the drill bit.

[0064] In some embodiments, the electronic device can determine, according to the tool face parameter, the plane equation of the drill tip plane in the workpiece coordinate system and the cylindrical surface equation of the outer cylindrical surface of the drill bit in the workpiece coordinate system. For the drill tip plane S i , the plane equation can be A i x + B i y + C i z + D i = 0. For the adjacent plane S i of the drill tip plane S j , the plane equation can be A j x + B j y + C j z + D j = 0. For the outer cylindrical surface of the drill bit, the cylindrical surface equation can be x 2 + y 2 = R 2 . The electronic device can jointly solve the cylindrical surface equation in the workpiece coordinate system, the plane equation of the drill tip plane, and the plane equation of the adjacent plane to obtain the coordinates of the end points of the circumferential intersection line corresponding to the drill tip plane in the workpiece coordinate system. As Figure 3 shown, a schematic diagram of the end points of the circumferential intersection line is provided. The drill tip plane S i intersects the adjacent plane S j at the reference intersection line l ij . The circumferential intersection line l i corresponding to the drill tip plane S i intersects the adjacent plane Sj corresponding circumferential intersection line l j intersecting at end point P si . End point P si is the drill tip plane S i corresponding circumferential intersection line l i with the adjacent plane S j corresponding circumferential intersection line l j has the same end point, which is also the intersection point of the drill outer cylindrical surface and the reference intersection line l ij .

[0065] For end point P si (x si ,y si ,z si ) in the workpiece coordinate system, it can be obtained by jointly solving the following equations (2), (3) and (4).

[0066]

[0067]

[0068] A i x si +B i y si +C i z si +D i =0(4)

[0069] Where end point P si is simultaneously on the drill tip plane and the adjacent plane, its coordinates simultaneously satisfy A i x si +B i y si +C i z si +D i =0, A j x si +B j y si +C j z si +D j =0, by eliminating these two equations, z si can be eliminated from the equation, and equation (2) is obtained. End point P si is also on the drill outer cylindrical surface, its coordinates also satisfy It should be noted that the result obtained by jointly solving equations (2), (3) and (4) has two, which can be eliminated by the quadrant in which the drill tip plane corresponds to the circumferential intersection line l i .

[0070] Electronic equipment can determine the central angle corresponding to the endpoint on the circumferential intersection line based on its coordinates in the workpiece coordinate system. The central angle characterizes the angle of inclination of the normal vector of the drill bit's outer cylindrical surface at the endpoint on the circumferential intersection line relative to the first-dimensional coordinate axis (X-axis) in the workpiece coordinate system. For example, the central angle can be the angle between the normal vector of the drill bit's outer cylindrical surface at the endpoint on the circumferential intersection line and the positive direction of the first-dimensional coordinate axis in the workpiece coordinate system. The central angle can also be an integer multiple of 360 degrees from the aforementioned angle. Based on endpoint P... si Coordinates (x) in the workpiece coordinate system si ,y si ,z si The endpoint P can be determined. si The corresponding central angle γ si , or

[0071] In some embodiments, the drill tip plane includes the plane containing the first flank face S11 of the outer cutting edge, the plane containing the second flank face S12 of the outer cutting edge, the plane containing the flank face S2 of the drill tip, the plane containing the flank face S3 of the inner cutting edge, and the plane containing the guide surface S4. Table 1 shows the correspondence between the central angles corresponding to the endpoints on each circumferential intersection line and the drill tip plane.

[0072] Table 1:

[0073]

[0074]

[0075] like Figure 4 As shown, a schematic diagram of the endpoint distribution along the intersection lines of each circle is provided. γ 11 It is the endpoint P on the intersection of the circles. 11 The corresponding central angle. γ 12 It is the endpoint P on the intersection of the circles. 12 The corresponding central angles. γ2 is the central angle corresponding to endpoint P2 on the circumferential intersection line. γ3 is the central angle corresponding to endpoint P3 on the circumferential intersection line. γ4 is the central angle corresponding to endpoint P4 on the circumferential intersection line. It can be understood that, due to the existence of the tool groove, i.e., the V-shaped angle, the guide surface S4 and the first flank face S11 of the outer cutting edge are separated. Therefore, the common endpoint of the circumferential intersection line corresponding to the plane of the guide surface S4 and the circumferential intersection line corresponding to the plane of the first flank face S11 of the outer cutting edge "disappears" within the tool groove; it is a virtual endpoint.

[0076] It can be understood that the difference between the two angles is 360 degrees, and the positions corresponding to the two angles in the coordinate system are the same, therefore, the central angle corresponding to the end point on the intersection line of the circumference can be positive or negative, as long as the difference is an integer multiple of 360 degrees, it can be used as the central angle corresponding to the end point. The electronic device can adaptively determine the central angle corresponding to the end point on each intersection line of the circumference that meets the preset size relationship. For example, if the grinding tool processes the chamfer at each target intersection point on the intersection line of the circumference in the clockwise direction, the electronic device can determine the central angle corresponding to the end point on each intersection line of the circumference that meets the preset size relationship of γ 11 >γ 12 >γ2>γ3>γ4, so as to ensure that in the clockwise direction from the first relief surface S11 of the outer blade to the flow guide surface S4, the central angle corresponding to the end point on each intersection line of the circumference is continuously decreasing.

[0077] In some embodiments, the electronic device can determine the angle range in which the central angle corresponding to the point on the intersection line of the circumference is located according to the central angle corresponding to the two end points on the intersection line of the circumference between the drill tip plane and the outer cylindrical surface of the drill bit, to obtain the angle range of the intersection line of the circumference. The intersection equation of the intersection line of the circumference corresponding to the drill tip plane is determined according to the angle range, the outer diameter parameter of the drill bit and the plane equation of the drill tip plane.

[0078] In some embodiments, formula (5) is the intersection equation of each intersection line of the circumference.

[0079]

[0080] wherein P(γ i ) is the point on each intersection line of the circumference. γ i is the central angle corresponding to the point. x i is the first dimension coordinate of the point in the workpiece coordinate system. y i is the second dimension coordinate of the point in the workpiece coordinate system. z i is the third dimension coordinate of the point in the workpiece coordinate system. R is the cylindrical base radius corresponding to the outer cylindrical surface of the drill bit, which is equal to 0.5 times the diameter parameter of the drill bit. z i (γ i ) is obtained by substituting the first dimension coordinate and the second dimension coordinate of the point in the workpiece coordinate system into the plane equation of the corresponding drill tip plane. [γ 12 , γ 11 ] is the angle range of the intersection line of the circumference between the plane where the first relief surface of the outer blade is located and the outer cylindrical surface of the drill bit, so when γ 12 ≤γ i ≤γ 11 , [γ2, γ 12 ] is the angle range of the intersection line of the circumference between the plane where the second relief surface of the outer blade is located and the outer cylindrical surface of the drill bit, so when γ2≤γ i ≤γ12 Time, [γ3, γ2] is the angle range of the intersection line between the plane of the drill tip flank face and the outer cylindrical surface of the drill bit, so when γ3≤γ i ≤γ2, [γ4, γ3] is the angle range of the intersection line between the plane of the inner blade flank face and the outer cylindrical surface of the drill bit, so when γ4≤γ i ≤γ3, [γ 11 -360°, γ4] is the angle range of the intersection line between the plane of the guide surface and the outer cylindrical surface of the drill bit, so when γ 11 -360°≤γ i ≤γ4,

[0081] It can be understood that, because the intersection line is on the outer cylindrical surface of the drill bit, the ratio of the first dimension coordinate value of the point on the intersection line in the workpiece coordinate system to 0.5 times the outer diameter parameter of the drill bit is the cosine value of the central angle corresponding to the point, and the ratio of the second dimension coordinate value of the point on the intersection line in the workpiece coordinate system to 0.5 times the outer diameter parameter of the drill bit is the sine value of the central angle corresponding to the point. The third dimension coordinate value of the point on the intersection line in the workpiece coordinate system can be obtained by substituting the first dimension coordinate value and the second dimension coordinate value of the point on the intersection line in the workpiece coordinate system into the plane equation of the drill tip plane, and then the coordinates of the point on the intersection line in the workpiece coordinate system are determined.

[0082] In the embodiment, the drill tip planes and the outer cylindrical surface of the drill bit are determined according to the flank face parameters of the drill bit, and the adjacent planes of each drill tip plane are determined from the drill tip planes. The drill tip plane intersects with the adjacent plane at a reference intersection line, and the intersection line between the drill tip plane and the outer cylindrical surface of the drill bit is truncated by the reference intersection line to obtain a circular intersection line, and the intersection point of the outer cylindrical surface of the drill bit and the reference intersection line belongs to the end point on the circular intersection line. Then, the circular intersection line between the drill tip plane and the outer cylindrical surface of the drill bit can be accurately determined according to the drill tip plane, the outer cylindrical surface of the drill bit and the adjacent planes of the drill tip plane. Moreover, the circular intersection line can be determined only by the flank face parameters of the drill bit, which is more convenient and improves the convenience.

[0083] In some embodiments, determining the drill tip planes and the outer cylindrical surface of the drill bit according to the flank face parameters of the drill bit comprises: determining a feature point in each drill tip plane and a plane rake angle and a plane relief angle of the drill tip plane according to the flank face parameters of the drill bit; the plane rake angle and the plane relief angle of the drill tip plane are both related to the inclination degree of the drill tip plane relative to the tool axis; determining a normal line of the drill tip plane according to the plane rake angle and the plane relief angle of the drill tip plane; and determining the drill tip plane according to the normal line of the drill tip plane and the feature point in the drill tip plane.

[0084] In some embodiments, the feature point is a point traversed by the drill tip plane. The plane angle reflects the angle of inclination relative to the tool axis of the line of intersection between the drill tip plane and a first plane passing through the tool axis. The plane clearance angle reflects the angle of inclination relative to the tool axis of the line of intersection between the drill tip plane and a second plane passing through the tool axis and perpendicular to the first plane.

[0085] In some embodiments, the third coordinate axis in the workpiece coordinate system is collinear with the tool axis. The first plane can be the plane containing the first and third coordinate axes in the workpiece coordinate system. The second plane can be the plane containing the second and third coordinate axes in the workpiece coordinate system.

[0086] In some embodiments, in the workpiece coordinate system, the third coordinate axis is collinear with the tool axis and the positive direction of the third coordinate axis is along the tool axis pointing to the drill tip. The first coordinate axis is parallel to the rake face and the positive direction of the first coordinate axis is from the tool axis to the side edge. The second, third, and second coordinate axes form a right-handed coordinate system. The drill tip is located in the plane containing the first and second coordinate axes.

[0087] In some embodiments, such as Figure 5 The diagram illustrates the planar clearance angle and planar oblique angle. The planar oblique angle and planar clearance angle are defined as follows: The drill tip plane, containing the planar region of the drill bit, intersects the XOZ plane (the plane containing the first and third coordinate axes in the workpiece coordinate system), producing an intersection line. This intersection line can be considered as the first imaginary cutting line PA. The angle α between the first imaginary cutting line PA and the positive half-axis of the X-axis (the first dimension of the workpiece coordinate system) is the planar oblique angle of the drill tip plane. Similarly, the drill tip plane intersects the YOZ plane (the plane containing the second and third coordinate axes in the workpiece coordinate system), producing an intersection line. This intersection line can be considered as the second imaginary cutting line PB. The angle β between the second imaginary cutting line PB and the negative half-axis of the Y-axis is the planar clearance angle of the drill tip plane.

[0088] In some embodiments, such as Figure 6 The diagram illustrates tool face parameters in a workpiece coordinate system. These parameters can include external cutting edge clearance parameters, drill tip clearance parameters, internal cutting edge clearance parameters, and guide surface parameters. External cutting edge clearance parameters can include the external cutting edge half-angle α1 and the external cutting edge first clearance angle β. 11 and the second back angle β of the outer edge 12 The parameters of the drill tip rake face may include the rake angle β2. The parameters of the inner cutting edge rake face may include the inner cutting edge half-angle α3 and the inner cutting edge rake angle β3. The parameters of the guide surface may include the guide surface control angle β4 and the angle α4 between the intersection of the guide surface and the XOZ plane and the X-axis.

[0089] like Figure 7As shown, another diagram of the parameters of the tool face and the parameters of the region to be machined in the workpiece coordinate system is provided. The parameters of the tool face can further include a drill outer diameter parameter D, a drill tip to outer edge distance d, an inner edge over center amount e, and a rake face to XOZ plane distance h. The parameters of the outer edge relief face can further include an outer edge first relief face width w. The parameters of the region to be machined can include a first end point parameter t and a region size parameter θ. The first end point parameter is used to represent the distance from the first end point in the region to be machined to the cutting edge. The region size parameter is used to represent the difference between a start circle central angle γ s and an end circle central angle γ e . The start circle central angle refers to the circle central angle corresponding to the first end point in the region to be machined. The end circle central angle refers to the circle central angle corresponding to the second end point in the region to be machined. The first end point and the second end point are located on at least one circular intersection line. The circular intersection line on which the first end point and the second end point are located can be a circular intersection line corresponding to the same drill tip plane, or can be a circular intersection line corresponding to different drill tip planes respectively.

[0090] The drill tip plane can include at least one of the plane on which the outer edge first relief face is located, the plane on which the outer edge second relief face is located, the plane on which the drill tip relief face is located, the plane on which the inner edge relief face is located, or the plane on which the flow guide face is located. According to the parameters of the tool face of the drill bit, the characteristic points in each drill tip plane and the plane inclination angle and the plane relief angle of the drill tip plane are determined, including at least one of the following processes:

[0091] For the plane on which the outer edge first relief face S11 is located, the characteristic points passing through include the drill tip point m11. The coordinates of the drill tip point m11 in the workpiece coordinate system are determined according to the drill outer diameter parameter D, the drill tip to outer edge distance d, and the rake face to XOZ plane distance h. Specifically, the coordinates of the drill tip point m11 in the workpiece coordinate system can be (D / 2-d, -h, 0). The plane inclination angle of the plane on which the outer edge first relief face S11 is located is determined according to the outer edge half-flank angle α1. Specifically, the plane inclination angle of the plane on which the outer edge first relief face S11 is located can be 90-α1. The outer edge first relief angle β 11 is taken as the plane relief angle of the plane on which the outer edge first relief face S11 is located.

[0092] For the plane on which the outer edge second relief face S12 is located, the characteristic points passing through include the outer edge second relief face characteristic point m12. The coordinates of the outer edge second relief face characteristic point m12 in the workpiece coordinate system are determined according to the coordinates of the drill tip point m11 in the workpiece coordinate system, the outer edge first relief face width w, and the outer edge first relief angle β 11 . Specifically, the coordinates of the outer edge second relief face characteristic point m12 in the workpiece coordinate system can be P11+(0, -w, -w*tan(β 11). The plane inclination angle of the plane where the outer blade second flank surface S12 is located is determined according to the outer blade half-chisel edge angle a1. Specifically, the plane inclination angle of the plane where the outer blade second flank surface S12 is located can be 90-a1. The outer blade second flank angle b2 is determined as the plane rear angle of the plane where the outer blade second flank surface S12 is located. 12 The plane rear angle of the plane where the outer blade second flank surface S12 is located is determined as the outer blade second flank angle b2.

[0093] For the plane where the drill tip flank surface S2 is located, the characteristic points passed by include the drill tip point m11 (D / 2-d, -h, 0). The plane inclination angle of the plane where the drill tip flank surface S2 is located is determined as 0. The drill tip flank angle b2 is determined as the plane rear angle of the plane where the drill tip flank surface S2 is located.

[0094] For the plane where the inner blade flank surface S3 is located, the characteristic points passed by include the drill tip point m11 (D / 2-d, -h, 0). The plane inclination angle of the plane where the inner blade flank surface S3 is located is determined according to the inner blade half-chisel edge angle a3. Specifically, the plane inclination angle of the plane where the inner blade flank surface S3 is located can be -(90-a3). The inner blade flank angle b3 is determined as the plane rear angle of the plane where the inner blade flank surface S3 is located.

[0095] For the plane where the flow guiding surface S4 is located, the characteristic points passed by include the flow guiding surface characteristic point m4. The coordinates of the flow guiding surface characteristic point m4 in the workpiece coordinate system are determined according to the drill bit outer diameter parameter D, the distance d from the drill tip to the outer blade, the inner blade over-center amount e, and the inner blade half-chisel edge angle a3. Specifically, the coordinates of the flow guiding surface characteristic point m4 in the workpiece coordinate system can be (-e, 0, -(D / 2-d+e) / tan(90-a3)). The plane inclination angle of the plane where the flow guiding surface S4 is located is determined according to the angle a4 between the intersection line of the flow guiding surface and the XOZ plane and the X axis. The plane inclination angle of the plane where the flow guiding surface S4 is located can be -a4. The plane rear angle of the plane where the flow guiding surface S4 is located is determined according to the flow guiding surface control angle b4. The plane rear angle of the plane where the flow guiding surface S4 is located can be -b4.

[0096] In some embodiments, the drill tip plane intersects the XOZ plane in the workpiece coordinate system at a first imaginary blade line, and intersects the YOZ plane in the workpiece coordinate system at a second imaginary blade line. The plane inclination angle refers to the angle between the first imaginary blade line and the X axis in the workpiece coordinate system. The plane rear angle refers to the angle between the second imaginary blade line and the Y axis in the workpiece coordinate system. The electronic device can determine a direction vector of the first imaginary blade line according to the plane inclination angle, and determine a direction vector of the second imaginary blade line according to the plane rear angle. The normal vector of the drill tip plane is determined according to the direction vector of the first imaginary blade line and the direction vector of the second imaginary blade line.

[0097] In some embodiments, the electronic device can perform cross multiplication on the direction vector of the first imaginary blade line and the direction vector of the second imaginary blade line to obtain the normal vector of the drill tip plane.

[0098] For example, the drill tip plane passes through a feature point m (x0, y0, z0), and the plane angle of the drill tip plane is a, and the relief angle of the drill tip plane is β, then the direction vector of the first imaginary blade line PA on the drill tip plane in the workpiece coordinate system is PA = [cos(a), 0, -sin(a)], the direction vector of the second imaginary blade line PB on the drill tip plane is PB = [0, -cos(β), -sin(β)], and the normal vector n of the drill tip plane is n = [n x ,n y ,n z ] and can be calculated by the following formula (6).

[0099] n = PA x PB (6)

[0100] In some embodiments, the plane equation of the drill tip plane in the workpiece coordinate system is determined according to the normal vector of the drill tip plane and the coordinates of the feature point in the workpiece coordinate system. It can be understood that according to spatial geometry, any plane in a three-dimensional space can be determined by a point on the plane and the normal vector of the plane, so as long as the feature point through which the drill tip plane passes and the normal vector of the drill tip plane are known, the plane equation of the drill tip plane can be determined.

[0101] Suppose the normal vector of the drill tip plane is n = [n x ,n y ,n z ]. The coordinates of the feature point m through which the drill tip plane passes in the workpiece coordinate system are (x0, y0, z0), and the plane equation of the drill tip plane can be expressed as A0x + B0y + C0z + D0 = 0. The coefficients A0, B0, C0, and D0 can be calculated by the following formulas (7), (8), (9), and (10).

[0102] A0 = n x (7)

[0103] B0 = n y (8)

[0104] C0 = n z (9)

[0105] D0 = -x0*n x -y0*n y -z0*n z (10)

[0106] For the plane in which the first relief surface S11 of the outer blade is located, the plane equation can be expressed as: A 11 *x + B 11 *y + C 11 *z + D 11 = 0.

[0107] For the plane in which the second relief surface S12 of the outer blade is located, the plane equation can be expressed as: A12 x + B 12 y + C 12 z + D 12 = 0.

[0108] For the plane in which the flank face S2 of the drill point is located, the plane equation can be expressed as: A2*x + B2*y + C2*z + D2 = 0.

[0109] For the plane in which the flank face S3 of the inner blade is located, the plane equation can be expressed as: A3*x + B3*y + C3*z + D3 = 0.

[0110] For the plane in which the flow guide surface S4 is located, the plane equation can be expressed as: A4*x + B4*y + C4*z + D4 = 0.

[0111] In this embodiment, the characteristic points in each drill point plane, the plane rake angle and the plane relief angle of the drill point plane are determined according to the flank face parameters of the drill bit; the normal line of the drill point plane is determined according to the plane rake angle and the plane relief angle of the drill point plane; and then based on the definition of the point formula equation of the plane, the drill point plane can be accurately determined according to the normal line of the drill point plane and the characteristic points in the drill point plane. Moreover, since the drill bit structure involves many angle parameters, in order to facilitate the calculation of the normal vector of the drill point plane by a unified method, the plane rake angle and the plane relief angle related to the inclination degree of the drill point plane relative to the tool axis are defined, the directional characteristics of the drill point plane are described by the plane rake angle and the plane relief angle, and the convenience is improved.

[0112] In some embodiments, the target intersection line point located in the to-be-processed region is determined from the circumferential intersection line, including: determining an offset amount according to the flank face parameters of the drill bit and the geometric parameters of the chamfer; performing offset processing on the parameters of the to-be-processed region according to the offset amount to obtain offset parameters; determining a target intersection line point matched with the offset parameters from the circumferential intersection line; wherein the offset amount is used to represent the offset degree of the grinding point of the grinding tool relative to the target intersection line point when the grinding tool processes the chamfer at the target intersection line point.

[0113] It can be understood that the processing of the chamfer is essentially to remove the sharp corners, and the operation of processing the chamfer will grind away the corners formed by the drill point plane at the target intersection line point and the outer cylindrical surface of the drill bit. Therefore, in order to ensure that the surface area ground by the grinding tool when processing the chamfer is within the to-be-processed region, the chamfer cannot be processed from the endpoint of the to-be-processed region, but should be offset to the inside of the to-be-processed region, so as to ensure that the surface area ground by the grinding tool when processing the chamfer at the first target intersection line point and the last target intersection line point is within the to-be-processed region.

[0114] In some embodiments, the cutting edge parameters may include the drill bit outer diameter parameters. The electronic device can determine the offset based on the drill bit outer diameter parameters and the chamfer geometry.

[0115] In some embodiments, the grinding tool may be, but is not limited to, a grinding wheel. The geometric parameters of the chamfer may include the chamfer angle and the chamfer height. For example... Figure 8 The diagram shows a perspective view and a top view of a grinding wheel machining a chamfer at the target intersection point. The perspective view includes the center point O of the grinding wheel. g The grinding wheel at the target intersection point P j Radial vector F at the location r axial vector F of the grinding wheel g The chamfer angle δ and chamfer height T. The offset in the top view is the intersection point P between the endpoint of the grinding area and the target. j The central angle between them. The offset is determined based on the drill bit's outer diameter parameters and the chamfer's geometric parameters, including: Offset = cos... -1 ((RT*tan(δ)) / R), R=D / 2, where D is the drill bit outer diameter parameter, T is the chamfer height, and δ is the chamfer angle.

[0116] In some embodiments, the region represented by the offset parameter is reduced by a factor of two compared to the region to be processed. This means that the two ends of the region represented by the offset parameter are each offset by a factor of one towards the interior of the region to be processed, compared to the two ends of the region to be processed.

[0117] In some embodiments, the electronic device can determine target intersection points located within a region characterized by an offset parameter from a circumferential intersection line. The first and last target intersection points are located at opposite ends of the region characterized by the offset parameter, respectively.

[0118] In this embodiment, when the grinding tool processes a chamfer, it grinds a certain surface area at the target intersection point. These surface areas belong to the chamfer structure on the drill bit, and the chamfer structure cannot deviate too much from the area to be processed. The offset is determined based on the drill bit's cutting face parameters and the chamfer's geometric parameters. The offset is used to characterize the degree of deviation of the grinding point of the grinding tool relative to the target intersection point when processing the chamfer at the target intersection point. Then, the parameters of the area to be processed are offset according to the offset, resulting in offset parameters. The target intersection point matching the offset parameters is determined from the circumferential intersection line. This ensures that the surface area ground by the grinding tool at the target intersection point within the area characterized by the offset parameters does not exceed the area to be processed, thus ensuring that the chamfer structure of the drill bit does not exceed the area to be processed and guaranteeing the accuracy of the drill bit's chamfering process.

[0119] In some embodiments, the parameters of the region to be machined include a first end point parameter and a region size parameter; and the parameters of the region to be machined are offset according to the offset amount to obtain offset parameters, including: determining a first offset parameter according to the first end point parameter and the offset amount; the first offset parameter corresponds to a first target intersection point in the region to be machined; determining a second offset parameter according to the first offset parameter, the offset amount and the region size parameter; the second offset parameter corresponds to a last target intersection point in the region to be machined.

[0120] In some embodiments, the first end point parameter is used to represent the distance from the first end point in the region to be machined to the cutting edge. The electronic device can determine the starting circle central angle in the region to be machined according to the drill bit outer diameter parameter, the rake face to tool axis distance and the first end point parameter. Specifically, γ s = -sin -1 ((t + h) / R). Wherein γ s is the starting circle central angle. t is the first end point parameter. h is the rake face to tool axis distance. R is 0.5 times the drill bit outer diameter parameter. The electronic device can offset the starting circle central angle according to the offset amount to obtain the first offset parameter. The first offset parameter is used to represent the offset starting circle central angle. Specifically, γ s ' = γ s + cos -1 ((R - T * tan(δ)) / R). Wherein γ s ' is the first offset parameter, T is the chamfer height, and δ is the chamfer angle.

[0121] In some embodiments, the first end point parameter can also be used to represent the starting circle central angle. It can be understood that the first end point parameter can be directly set as the starting circle central angle. The electronic device can directly superimpose the first end point parameter and the offset amount to obtain the first offset parameter.

[0122] In some embodiments, the region size parameter is used to represent the angle range in which the circle central angles corresponding to the points on each circumferential intersection line in the region to be machined are located. The second offset parameter is used to represent the offset ending circle central angle. The second offset parameter is determined according to the first offset parameter, the offset amount and the region size parameter, including: γ e ' = γ s ' - θ + 2 * cos -1 ((R - T * tan(δ)) / R). Wherein γ e ' is the second offset parameter. γ s ' is the first offset parameter. θ is the region size parameter. cos -1 ((R - T * tan(δ)) / R) is the offset amount.

[0123] In some embodiments, the intersection equation is as in equation (5). The first offset parameter is substituted into the intersection equation to obtain the first target intersection point. The second offset parameter is substituted into the intersection equation to obtain the last target intersection point. Each angle parameter within the angle range between the first offset parameter and the second offset parameter is substituted into the intersection equation to obtain each target intersection point.

[0124] In this embodiment, the parameters of the region to be processed include a first endpoint parameter and a region size parameter; the region to be processed is described more conveniently by the two parameters. The first offset parameter is determined according to the first endpoint parameter and the offset amount; the first offset parameter corresponds to the first target intersection point within the region to be processed; the second offset parameter is determined according to the first offset parameter, the offset amount, and the region size parameter; the second offset parameter corresponds to the last target intersection point within the region to be processed; the interval in which the target intersection points are located is specified by the first offset parameter and the second offset parameter, and the target intersection points that match the first offset parameter and the second offset parameter are determined from the circumferential intersection line subsequently, so that the surface region ground by the grinding tool at the target intersection points within the region represented by the first offset parameter and the second offset parameter does not exceed the region to be processed, the chamfer structure of the drill bit does not exceed the region to be processed, and the accuracy of the chamfer processing of the drill bit is ensured.

[0125] In some embodiments, the region to be processed and the region represented by the offset parameter are both located on the outer cylindrical surface of the drill bit. The electronic device can determine the target intersection points within the region represented by the offset parameter from the circumferential intersection line.

[0126] In some embodiments, the electronic device can determine the target intersection points that match the first offset parameter and the second offset parameter from the circumferential intersection line.

[0127] In some embodiments, the first offset parameter is used to represent the offset starting central angle. The second offset parameter is used to represent the offset ending central angle. The electronic device can determine the target intersection points whose corresponding central angles are within the angle range between the first offset parameter and the second offset parameter from the circumferential intersection line. It can be understood that the central angle corresponding to the target intersection points is within the angle range between the first offset parameter and the second offset parameter. The first offset parameter is the central angle corresponding to the first target intersection point. The second offset parameter is the central angle corresponding to the last target intersection point.

[0128] In some embodiments, the grinding tool includes a grinding wheel; the geometric parameters include a chamfer angle and a chamfer height; the chamfer angle is used to characterize the angle between the axial direction of the grinding wheel and the normal direction of the outer cylindrical surface of the drill bit at the target intersection point when the grinding wheel is machining a chamfer at the target intersection point; the chamfer height is used to characterize the distance between the intersection point of the outer edge of the grinding wheel and the generatrix passing through the target intersection point on the outer cylindrical surface of the drill bit and the target intersection point when the grinding wheel is machining a chamfer at the target intersection point; the pose data of the grinding tool is determined based on the geometric parameters of the target intersection point and the chamfer, including: determining the axial vector of the grinding wheel that matches the target intersection point and the chamfer angle; and determining the position data of the grinding wheel that matches the target intersection point and the chamfer height.

[0129] In some embodiments, such as Figure 8 As shown, when the grinding wheel is at the target intersection point P j When machining a chamfer, the axial vector F of the grinding wheel g The angle between the outer cylindrical surface of the drill bit and the normal at the target intersection point is the chamfer angle δ, and the intersection position of the outer edge of the grinding wheel and the generatrix on the outer cylindrical surface of the drill bit passing through the target intersection point is relative to the target intersection point P. j The distance is the chamfer height T. The axial vector is used to characterize the axis of the grinding wheel. The electronic equipment can determine the axial vector of the grinding wheel based on the chamfer angle and the central angle corresponding to the intersection point of the target line. Specifically, Among them, F g It is the axial vector. γ j It is the central angle corresponding to the point of intersection of the target lines. δ is the chamfer angle.

[0130] In some embodiments, the electronic device can determine the position data of the grinding wheel based on the chamfer angle, chamfer height, the central angle corresponding to the target intersection point, and the coordinates of the target intersection point in the workpiece coordinate system. The position data is used to characterize the position of the grinding wheel in the workpiece coordinate system.

[0131] In this embodiment, when the grinding wheel is chamfered at the target intersection point, the angle between the grinding wheel's axial direction and the normal direction of the drill bit's outer cylindrical surface at the target intersection point is the chamfer angle. The distance between the intersection point of the grinding wheel's outer edge and the generatrix on the drill bit's outer cylindrical surface passing through the target intersection point and the target intersection point is the chamfer height. Therefore, the chamfer angle determines the grinding wheel's orientation relative to the target intersection point, and the chamfer length determines the position of the grinding wheel's outer edge relative to the target intersection point. This allows for the determination of the grinding wheel's axial vector matching the target intersection point and chamfer angle; and the determination of the grinding wheel's position data matching the target intersection point and chamfer height. Subsequently, based on the axial and position data, the chamfer processed by the grinding wheel at the target intersection point can satisfy the chamfer's geometric parameters, which is more efficient than manual chamfering.

[0132] In some embodiments, determining the position data of the grinding wheel matching the target intersection point and the chamfer height comprises: determining a radial vector of the grinding wheel matching the target intersection point and the chamfer angle; weighting the radial vector according to the radius of the grinding wheel to obtain a weighted result; the weighted result is used to represent the position of the center point of the grinding wheel relative to the intersection position; and determining the position data of the center point of the grinding wheel according to the target intersection point, the chamfer height and the weighted result.

[0133] It can be understood that the weighted result is used to represent the position of the center point of the grinding wheel relative to the intersection position. The chamfer height is used to represent the distance between the outer edge of the grinding wheel and the intersection position of the element line passing through the target intersection point on the outer cylindrical surface of the drill bit when the grinding wheel processes the chamfer at the target intersection point. Therefore, the weighted result and the chamfer height jointly indicate the position of the center point of the grinding wheel relative to the target intersection point, and the target intersection point, the chamfer height and the weighted result can jointly specify the position of the center point of a grinding wheel.

[0134] In some embodiments, the electronic device can determine the radial vector of the grinding wheel according to the chamfer angle and the central angle corresponding to the target intersection point. Specifically, wherein F r is the radial vector of the grinding wheel. γ j is the central angle corresponding to the target intersection point. δ is the chamfer angle.

[0135] In some embodiments, the electronic device can calculate the product of the radius of the grinding wheel and the radial vector to obtain the weighted result. Specifically, the weighted result = R g *F r . Wherein R g is the radius of the grinding wheel. F r is the radial vector of the grinding wheel.

[0136] In some embodiments, the electronic device can determine the coordinates of the center point of the grinding wheel in the workpiece coordinate system according to the coordinates of the target intersection point in the workpiece coordinate system, the chamfer height and the weighted result. Wherein the first dimension coordinate value of the center point in the workpiece coordinate system is equal to the sum of the first dimension coordinate value of the target intersection point in the workpiece coordinate system and the first dimension data in the weighted result. The second dimension coordinate value of the center point in the workpiece coordinate system is equal to the sum of the second dimension coordinate value of the target intersection point in the workpiece coordinate system and the second dimension data in the weighted result. The third dimension coordinate value of the center point in the workpiece coordinate system is equal to the sum of the difference between the third dimension coordinate value of the target intersection point in the workpiece coordinate system and the chamfer height and the third dimension data in the weighted result. Specifically, wherein O g is the coordinates of the center point of the grinding wheel in the workpiece coordinate system. P j is the coordinates of the target intersection point in the workpiece coordinate system. T is the chamfer height. R g *F ris a weighted result. R g is a radius of the grinding wheel. F r is a radial vector of the grinding wheel.

[0137] In the embodiment, the radial vector of the grinding wheel matched with the target intersection point and the chamfer angle is determined; the radial vector is weighted according to the radius of the grinding wheel to obtain a weighted result; the weighted result is used to represent the position of the center point of the grinding wheel relative to the intersection position; the position data of the center point of the grinding wheel is determined according to the target intersection point, the chamfer height and the weighted result, the center point of the grinding wheel is the most stable position during grinding of the grinding wheel, and the chamfer is machined at the target intersection point according to the position data of the center point of the grinding wheel, so that the stability of the drill chamfer machining can be ensured.

[0138] In some embodiments, the drill refers to a gun drill. The electronic device can establish a workpiece coordinate system on the gun drill, and obtain a land parameter of the gun drill, a parameter of a region to be machined and a geometric parameter of a chamfer. The gun drill can include an outer land first relief surface S11, an outer land second relief surface S12, a tip relief surface S2, an inner land relief surface S3 and a flow surface S4. The outer land first relief surface, the inner land relief surface and the land band respectively intersect with the rake surface to form the outer land, the inner land and the side land. In the workpiece coordinate system O-XYZ, the Z axis points to the tip along the tool axis of the gun drill, the X axis is parallel to the rake surface, perpendicular to the Z axis and points to the side land, and the tip point is in the XOY plane, the X axis, the Y axis and the Z axis form a right-hand coordinate system, and the Y axis is perpendicular to the rake surface. The land parameter of the gun drill can include an outer land relief surface parameter, a tip relief surface parameter, an inner land relief surface parameter and a flow surface parameter, as well as a drill outer diameter parameter D, a distance d from the tip to the outer land, an inner land center passing amount e and a distance h from the rake surface to the XOZ plane. The outer land relief surface parameter can include an outer land half edge angle α1, an outer land first relief angle β1, an outer land second relief angle β2 and an outer land first relief surface width w. The tip relief surface parameter can include a tip relief angle β2. The inner land relief surface parameter can include an inner land half edge angle α3 and an inner land relief angle β3. The flow surface parameter can include a flow surface control angle β4 and an intersection angle α4 between the intersection line of the flow surface and the XOZ plane and the X axis. The parameter of the region to be machined can include a first end point parameter t and a region size parameter θ. The geometric parameter of the chamfer can include a chamfer angle δ and a chamfer height T. 11 12

[0139] ​​The electronic device can determine the plane equation of each drill tip plane in the workpiece coordinate system based on the land parameters of the gun drill drill bit. Specifically, according to spatial geometry, any plane in a three-dimensional space can be determined by a point on the plane and the normal vector of the plane, so as to determine the plane equation of the drill tip plane as long as the feature point on the drill tip plane and the normal vector of the drill tip plane are known. Since the gun drill drill bit has many angle parameters, in order to facilitate the calculation of the normal vector of the drill tip plane by a unified method, the plane inclination angle and the plane relief angle of the drill tip plane are defined, and the angle parameters of the drill tip plane can be converted into the plane inclination angle and the plane relief angle.

[0140] The plane inclination angle and the plane relief angle are defined as follows: the drill tip plane intersects with the XOZ plane to generate a first imaginary blade line PA, and the angle a between PA and the positive half of the X-axis is the plane inclination angle of the drill tip plane. Similarly, the second imaginary blade line PB generated by the intersection of the drill tip plane and the YOZ plane has an angle β with the negative direction of the Y-axis, which is the plane relief angle of the drill tip plane. According to the definition of the plane inclination angle and the plane relief angle, the plane inclination angle and the plane relief angle of each drill tip plane can be obtained in combination with the land parameters, and the plane equation of the drill tip plane can be calculated.

[0141] If the drill tip plane passes through the feature point m(x0, y0, z0) and has a plane inclination angle a and a plane relief angle β, the direction vector of the first imaginary blade line PA is PA=[cos(a), 0, -sin(a)], the direction vector of the second imaginary blade line PB is PB=[0, -cos(β), -sin(β)], and the normal vector n of the plane is n=[n x ,n y ,n z ] = PA x PB, and the plane equation of the drill tip plane can be expressed as A0x + B0y + C0z + D0 = 0, where the coefficients A0=n x , B0=n y , C0=n z , and D0=-x0*n x -y0*n y -z0*n z .

[0142] The electronic device can use the plane equation of each drill tip plane and the cylindrical surface equation of the drill bit outer cylinder to solve the corresponding circular intersection line of each drill tip plane. Specifically, the intersection line generated by the intersection of the drill tip plane and the drill bit outer cylinder includes the circular intersection line. The circular intersection line l i , i = 1, 2, 3, or 4, and l iEach point corresponds to a central angle, which is the angle of inclination of the line connecting that point and the center of the circle relative to the positive x-axis. The central angle is also the angle of inclination of the normal to the outer cylindrical surface of the drill bit at that point relative to the x-axis. The core of solving for the intersection of circles lies in the central angles corresponding to the endpoints of the intersection. Assume the intersection of circles is l... i The line of intersection of the circumference with its adjacent circle l j There exists a common endpoint P si Endpoint P si It is the drill tip plane S i and its adjacent drill tip plane S j The intersection line l ij The intersection point with the outer cylindrical surface of the drill bit. Endpoint P si (x si ,y si ,z si The coordinates can be obtained by solving the following system of equations: A i x si +B i y si +C i z si +D i =0. Where R is the drill bit radius, R = D / 2, which is 0.5 times the drill bit outer diameter parameter. The equations yield two results, which can be obtained through the circumferential intersection line l. i Discard an incorrect solution in the quadrant where it is located. Furthermore, endpoint P... si (x i ,y i ,z i The central angle γ corresponding to ) si It can be calculated using the following formula: or Furthermore, due to the circumferential intersection line l i The plane equation of the drill tip plane and the central angle corresponding to the endpoints are known. Therefore, any central angle γ is given. i The coordinates of the points on the intersection line of the corresponding circles can be calculated using formula (5).

[0143] Electronic equipment can calculate the pose data of the grinding wheel using the geometric parameters of the target intersection point on the circumferential intersection line, located within the area to be processed, and the chamfer. Specifically, it determines the initial central angle γ after offset. s ′=γ s +cos -1 ((RT*tan(δ)) / R) and the offset ending central angle γ e ′=γ s -θ+2*cos -1((R-T*tan(δ)) / R). The offset starting circle center angle and the offset ending circle center angle can be negative angles. Wherein, cos -1 ((R-T*tan(δ)) / R) is the offset amount of the grinding point due to the grinding wheel end face machining chamfer, t is the distance from the first endpoint of the circumferential chamfer structure edge to the cutting edge, θ is the region size parameter, δ is the chamfer angle, and T is the chamfer height.

[0144] For any target intersection point P j = P(γ j ), wherein the point corresponds to a circle center angle γ j Between the angle range formed by the offset starting circle center angle and the offset ending circle center angle, the radial vector F r of the grinding wheel when the grinding wheel machines the chamfer at the target intersection point, the axial vector F g of the grinding wheel and the center point coordinate O g of the grinding wheel end face can be calculated by the following formula: Wherein R g is the radius of the grinding wheel.

[0145] The electronic device can control the grinding tool to machine the chamfer at the target intersection point in the simulation environment according to the axial vector and the coordinates of the center point of the grinding wheel in the workpiece coordinate system. Specifically, the gun drill can be but is not limited to a planar gun drill. In order to verify the machining method of the drill bit chamfer proposed in the present application, a program is written in the programming software based on the method, the tool face parameters, the parameters of the region to be machined and the geometric parameters of the chamfer are input, the pose data is obtained, and then a special post-processing software is used to convert into numerical control code. Using the numerical control code, simulation is carried out in a professional simulation software, the simulation data is shown in Table 2, and the simulation result is shown in Figure 9 .

[0146] Table 2:

[0147] Parameter Design value Exterior blade half-chamfer angle 45° Exterior blade first clearance angle 10° Exterior blade first relief width 0.42 mm Exterior blade second clearance angle 25° Nose clearance angle 30° Interior blade half-chamfer angle 70° Interior blade clearance angle 10° Ramp half-chamfer angle 60° Ramp control angle 20° Chamfer angle 15° Chamfer height 0.4 mm Region size parameter 270°

[0148] Figure 9The figure (a) is a top view of the gun drill drill bit, (b) is a front view of the gun drill drill bit, (c) is a left view of the gun drill drill bit. The chamfer structure on the gun drill drill bit is distributed at the outer periphery corresponding to the first flank surface S11 of the outer cutting edge, the second flank surface S12 of the outer cutting edge, the flank surface S2 of the drill tip, the flank surface S3 of the inner cutting edge and the flow guide surface S4. It can be understood that in the top view, the front view and the left view of the gun drill drill bit, the gray scale filling area between the outer edge of the plane area of the first flank surface S11 of the outer cutting edge, the second flank surface S12 of the outer cutting edge, the flank surface S2 of the drill tip, the flank surface S3 of the inner cutting edge and the flow guide surface S4 and the outer cylindrical surface of the drill bit is the area where the chamfer structure on the gun drill is located. The chamfer structure on the gun drill drill bit conforms to the design value of the parameters, which verifies the correctness and effectiveness of the method provided by the present application. By adaptively selecting the geometric parameters of the chamfer and the parameters of the to-be-processed area, the geometric characteristics of the chamfer structure on the gun drill drill bit and the distribution area of the chamfer structure can be changed. Through the method provided by the present application, the automation of the chamfer machining of the gun drill drill bit can be realized, and manual machining of the chamfer of the gun drill drill bit is not needed, thereby improving the machining efficiency of the chamfer of the gun drill drill bit.

[0149] It should be understood that, although each step in the flowchart involved in each of the above embodiments is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in sequence according to the direction of the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each of the above embodiments can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or steps or stages in other steps.

[0150] Based on the same inventive concept, the present application also provides a gun drill chamfer machining device for implementing the gun drill chamfer machining method described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more gun drill chamfer machining device embodiments provided below can refer to the limitations of the gun drill chamfer machining method in the above text, and will not be repeated here.

[0151] In one exemplary embodiment, as shown in Figure 10 A drill bit chamfer machining device is provided, comprising: a first determination module 1002, a second determination module 1004, a pose determination module 1006 and a machining module 1008, wherein:

[0152] The first determination module 1002 is configured to determine a circumferential intersection line between a drill tip plane and an outer cylindrical surface of the drill bit; wherein the chamfer structure on the drill bit corresponds to a to-be-processed region including at least part of the circumferential intersection line.

[0153] The second determination module 1004 is configured to determine a target intersection point in the to-be-processed region from the circumferential intersection line.

[0154] The pose determination module 1006 is configured to determine pose data of a grinding tool according to the target intersection point and geometric parameters of the chamfer.

[0155] The processing module 1008 is configured to control the grinding tool to process the chamfer at the target intersection point according to the pose data.

[0156] In some embodiments, the first determination module 1002 is configured to determine each drill tip plane and the outer cylindrical surface of the drill bit according to a land parameter of the drill bit; determine an adjacent plane of each drill tip plane from the drill tip planes; determine the circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit according to the drill tip plane, the outer cylindrical surface of the drill bit and the adjacent plane of the drill tip plane; wherein the drill tip plane and the adjacent plane of the drill tip plane intersect at a reference intersection line; and end points on the circumferential intersection line include intersection points of the outer cylindrical surface of the drill bit and the reference intersection line.

[0157] In some embodiments, the first determination module 1002 is configured to determine a feature point in each drill tip plane and a plane rake angle and a plane relief angle of the drill tip plane according to a land parameter of the drill bit; the plane rake angle and the plane relief angle of the drill tip plane are related to a degree of inclination of the drill tip plane relative to a tool axis; determine a normal line of the drill tip plane according to the plane rake angle and the plane relief angle of the drill tip plane; and determine the drill tip plane according to the normal line of the drill tip plane and the feature point in the drill tip plane.

[0158] In some embodiments, the second determination module 1004 is configured to determine an offset according to the land parameter of the drill bit and the geometric parameters of the chamfer; perform offset processing on a parameter of the to-be-processed region to obtain an offset parameter according to the offset; and determine a target intersection point matching the offset parameter from the circumferential intersection line; wherein the offset is used to represent a degree of offset of a grinding point of the grinding tool relative to the target intersection point when the grinding tool processes the chamfer at the target intersection point.

[0159] In some embodiments, the parameter of the to-be-processed region includes a first end point parameter and a region size parameter; the second determination module 1004 is configured to determine a first offset parameter according to the first end point parameter and the offset; the first offset parameter corresponds to a first target intersection point in the to-be-processed region; determine a second offset parameter according to the first offset parameter, the offset and the region size parameter; and the second offset parameter corresponds to a last target intersection point in the to-be-processed region.

[0160] In some embodiments, the grinding tool comprises a grinding wheel; the geometric parameters comprise a chamfer angle and a chamfer height; the chamfer angle is used to represent an angle of a normal of the target intersection point relative to an axial direction of the grinding wheel when the grinding wheel processes a chamfer at the target intersection point; the chamfer height is used to represent a distance between an outer edge of the grinding wheel and an intersection position of a line on the outer cylindrical surface of the drill bit passing through the target intersection point relative to the target intersection point when the grinding wheel processes the chamfer at the target intersection point; the pose determination module 1006 is configured to determine an axial vector of the grinding wheel matched with the target intersection point and the chamfer angle; and determine position data of a center point of the grinding wheel matched with the target intersection point and the chamfer height.

[0161] In some embodiments, the pose determination module 1006 is configured to determine a radial vector of the grinding wheel matched with the target intersection point and the chamfer angle; weight the radial vector according to a radius of the grinding wheel to obtain a weighting result; and use the weighting result to represent a position of the center point of the grinding wheel relative to the intersection position; and determine position data of the center point of the grinding wheel according to the target intersection point, the chamfer height and the weighting result.

[0162] In some embodiments, the processing module 1008 is configured to control the grinding wheel to process the chamfer at the target intersection point according to the axial vector of the grinding wheel and the position data of the center point of the grinding wheel.

[0163] The above-mentioned modules in the drill bit chamfer processing device can be implemented by software, hardware or a combination thereof. The above-mentioned modules can be embedded in or independent of a processor in an electronic device in hardware form, or stored in a memory in the electronic device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above-mentioned modules.

[0164] In an exemplary embodiment, an electronic device is provided, which can be a numerical control machine, and an internal structure diagram of the electronic device can be as shown in FIG. 1. Figure 11The electronic device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the electronic device is configured to exchange information between the processor and external devices. The communication interface of the electronic device is configured to perform wired or wireless communication with external terminals. The wireless communication can be achieved through WIFI, mobile cellular network, NFC (Near Field Communication) or other technologies. The computer program is executed by the processor to implement a method for machining a drill bit chamfer. The display unit of the electronic device is configured to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the electronic device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the electronic device, or an external keyboard, touchpad or mouse, etc.

[0165] Those skilled in the art can understand that, Figure 11 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. The specific electronic device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0166] In one exemplary embodiment, an electronic device is provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps in the above method embodiments.

[0167] In one embodiment, a computer readable storage medium is provided, storing a computer program, and the computer program is executed by a processor to implement the steps in the above method embodiments.

[0168] In one embodiment, a computer program product is provided, including a computer program, and the computer program is executed by a processor to implement the steps in the above method embodiments.

[0169] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0170] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0171] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method of chamfering a drill bit, characterized by, The method includes: Determine the circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit; wherein, the area to be processed corresponding to the chamfered structure on the drill bit includes at least a portion of the circumferential intersection line; the two ends of the at least portion of the circumferential intersection line are a first endpoint and a second endpoint, respectively; The offset is determined based on the drill bit's cutting face parameters and the chamfer's geometric parameters; the offset is the central angle between the endpoint of the grinding area and the intersection point of the target. The first offset parameter is determined based on the first endpoint parameter and the offset; the first endpoint parameter is used to characterize the distance from the first endpoint to the cutting edge; the first offset parameter is the central angle corresponding to the first target intersection point in the area to be processed; The second offset parameter is determined based on the first offset parameter, the offset amount, and the region size parameter; the region size parameter is used to characterize the difference between the central angle corresponding to the first endpoint and the central angle corresponding to the second endpoint; the second offset parameter is the central angle corresponding to the last target intersection point within the processing region; Determine the target intersection point whose corresponding central angle is within the angle range formed by the first offset parameter and the second offset parameter from the circumferential intersection line; The pose data of the grinding tool are determined based on the geometric parameters of the target intersection point and the chamfer. The grinding tool is controlled to process the chamfer at the target intersection point based on the pose data.

2. The method of claim 1, wherein, Determining the circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit includes: The drill tip planes and outer cylindrical surface of the drill bit are determined based on the drill bit's cutting face parameters; Determine the adjacent planes of each drill tip plane from the respective drill tip planes; The circumferential intersection line between the drill tip plane and the outer cylindrical surface of the drill bit is determined based on the drill tip plane, the outer cylindrical surface of the drill bit, and the adjacent planes of the drill tip plane; Wherein, the drill tip plane intersects with the adjacent plane of the drill tip plane at a reference intersection line; the endpoints of the circumferential intersection line include the intersection point of the outer cylindrical surface of the drill bit and the reference intersection line.

3. The method of claim 2, wherein, The step of determining the drill tip planes and the outer cylindrical surface of the drill bit based on the drill bit's cutting face parameters includes: The feature points within each drill tip plane, as well as the plane angle and plane clearance angle of the drill tip plane, are determined based on the drill bit's cutting face parameters; the plane angle and plane clearance angle of the drill tip plane are both related to the degree of inclination of the drill tip plane relative to the tool axis; The normal to the drill tip plane is determined based on the plane inclination angle and plane back angle of the drill tip plane; The drill tip plane is determined based on the normal to the drill tip plane and the feature points within the drill tip plane.

4. The method of claim 1, wherein, The drill bit is a gun drill bit.

5. The method of claim 4, wherein, The gun drill is a planar gun drill; the drill tip plane includes at least one of the following: the plane containing the first flank face of the outer cutting edge, the plane containing the second flank face of the outer cutting edge, the plane containing the flank face of the drill tip, the plane containing the flank face of the inner cutting edge, or the plane containing the guide surface.

6. The method according to any one of claims 1 to 5, characterized in that, The grinding tool comprises a grinding wheel; the geometric parameters comprise a chamfer angle and a chamfer height; the chamfer angle is used to represent an angle between an axial direction of the grinding wheel and a normal direction of the target intersection point on the outer cylindrical surface of the drill bit; the chamfer height is used to represent a distance between a center point of the grinding wheel and an intersection position of a line on the outer cylindrical surface of the drill bit and a tangent line of the center point of the grinding wheel; The method comprises the following steps: determining an axial vector of the grinding wheel matched with the target intersection point and the chamfer angle; determining position data of the grinding wheel matched with the target intersection point and the chamfer height.

7. The method of claim 6, wherein, The method comprises the following steps: determining a radial vector of the grinding wheel matched with the target intersection point and the chamfer angle; weighting the radial vector according to a radius of the grinding wheel to obtain a weighting result; the weighting result is used to represent a position of the center point of the grinding wheel relative to the intersection position; determining position data of the center point of the grinding wheel according to the target intersection point, the chamfer height and the weighting result.

8. A device for chamfering a drill bit, characterized by The device comprises: a first determining module configured to determine a circumferential intersection line between a drill tip plane and an outer cylindrical surface of a drill bit; wherein a to-be-processed region corresponding to a chamfer structure on the drill bit comprises at least part of the circumferential intersection line; a second determining module configured to determine a target intersection point located in the to-be-processed region from the circumferential intersection line; a pose determining module configured to determine pose data of a grinding tool according to the target intersection point and geometric parameters of a chamfer; a processing module configured to control the grinding tool to process the chamfer at the target intersection point according to the pose data. The device is used to implement steps of the method in any one of claims 1 to 7. 9.An electronic device comprising a memory and a processor, the memory storing a computer program, wherein, The processor implements steps of the method in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement steps of the method in any one of claims 1 to 7.

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