Oblique cone cylinder machining method

Abstract

The invention discloses a method for machining an oblique cone cylinder. Comprising the steps that S11, based on an obtained positive cone cylinder, a first reference block is fixed to the outer surface of a second machining part of the positive cone cylinder; s12, the second machining part is fixed, a milling cutter is moved to make contact with the first reference block to determine a first machining reference point coordinate, and then the first machining part of the positive cone cylinder is milled till the first machining part is milled into a first forming part; s13, the positions of the first forming part and the second machining part are rotationally exchanged, and then the first forming part is fixed; and S14, the milling cutter is moved to make contact with the first reference block to determine coordinates of a second machining reference point, then the milling cutter is moved to mill the second machining part till the second machining part is milled into a second forming part, and the oblique cone cylinder is obtained. In this way, the problems existing in the machining process of an existing high-temperature alloy oblique cone cylinder are solved.

Description

Technical Field

[0001] The invention relates to the field of oblique cone cylinder processing, and in particular to an oblique cone cylinder processing method. Background Art

[0002] The high-temperature alloy IN718 material has the advantages of high hardness and high strength, and is often used as a material for some special parts in the aerospace field. Among them, there is a part in the aerospace field, which is in the shape of an oblique cone. Its processing method often uses a machine tool to mill the positive cone, remove the excess allowance, and finally obtain the required oblique cone. However, since the oblique cone needs to be obtained by milling both ends of the positive cone, during the processing, it is necessary to first fix one end of the positive cone and process the other end of the positive cone, and then swap the processed end with the original fixed end for fixed processing. Since the outer surface of the positive cone is an inclined surface, and the shape of the blank after the first processing is irregular, and the original fixed end and the processing end need to be swapped during the processing, the position of the processing reference point is difficult to determine, which in turn causes processing difficulties. Summary of the invention

[0003] In order to solve the above problems existing in the processing of the existing high-temperature alloy inclined cone cylinder, the present invention provides an inclined cone cylinder processing method, comprising the following steps:

[0004] Step S11, based on obtaining a positive tapered cylinder, fixing a first reference block to an outer surface of a second processed portion of the positive tapered cylinder;

[0005] Step S12, fixing the second processing part, moving the milling cutter to touch the first reference block to determine the coordinates of the first processing reference point, and then milling the first processing part of the positive cone cylinder until the first processing part is milled into a first forming part; wherein the outer surface of the first processing part and the outer surface of the second processing part are located on the same inclined plane, and the inner surface of the first processing part and the inner surface of the second processing part are located on the same inclined plane;

[0006] Step S13, rotating and swapping the positions of the first forming part and the second processing part, and then fixing the first forming part;

[0007] Step S14, moving the milling cutter to touch the first reference block to determine the coordinates of the second processing reference point, and then moving the milling cutter to mill the second processing part until the second processing part is milled into a second forming part to obtain an oblique cone cylinder.

[0008] This embodiment also provides another method for processing an oblique cone cylinder, comprising the following steps:

[0009] Step K11, based on obtaining a positive conical cylinder, fixing the first reference block and the second reference block to the outer surface of the second processed part of the positive conical cylinder respectively with the central cross section of the positive conical cylinder axial direction as the mirror surface;

[0010] Step K12, fixing the second processing part, moving the milling cutter to touch the first reference block to determine the coordinates of the first processing reference point, and then milling the first processing part of the positive cone cylinder until the first processing part is milled into a first forming part; wherein the outer surface of the first processing part and the outer surface of the second processing part are located on the same inclined plane, and the inner surface of the first processing part and the inner surface of the second processing part are located on the same inclined plane;

[0011] Step K13, flipping and swapping the positions of the first forming part and the second processing part, and then fixing the first forming part;

[0012] Step K14, moving the milling cutter to touch the second reference block to determine the coordinates of the second processing reference point, and then moving the milling cutter to mill the second processing part until the second processing part is milled into a second forming part to obtain an oblique cone cylinder.

[0013] In some embodiments, the method of fixing the second processed part in step S12 or K12 is specifically:

[0014] Sleeve the first pressing plate on the second processing part, and clamp the cylindrical surface of the second processing part with a chuck, wherein the cylindrical surface of the second processing part is located at the end of the second processing part, and the first reference block is located between the first pressing plate and the chuck;

[0015] Based on the chuck clamping the cylindrical surface of the second processing part, the first pressure is applied to the first pressure plate along the central axis of the positive cone cylinder, so that the inner surface of the first pressure plate and the partial outer surface of the second processing part are interference fit, and then the position of the second processing part is fixed.

[0016] In some embodiments, the first reference block is in the shape of a cube, and the contact point between the first reference block and the second processing part is the midpoint of an edge of the first reference block.

[0017] In some embodiments, in step S12 or K12:

[0018] The contact point between the milling cutter and the first reference block is a vertex of the first reference block;

[0019] An end surface of the first formed portion away from the second processed portion is a first inclined surface.

[0020] In some embodiments, step S13 is specifically:

[0021] Based on the first processed portion being milled into a first formed portion; rotating and swapping the positions of the first formed portion and the second processed portion;

[0022] The second pressing plate is sleeved on the first forming part and the first forming part is clamped with a chuck, and then a second pressure is applied to the second pressing plate along the axial direction of the first forming part so that the second pressing plate and the first forming part have an interference fit, and then the position of the first forming part is fixed.

[0023] In some embodiments, step K13 is specifically:

[0024] Based on the first processed portion being milled into a first formed portion; rotating and swapping the positions of the first formed portion and the second processed portion;

[0025] The second pressing plate is sleeved on the first forming part and the first forming part is clamped with a chuck, and then a second pressure is applied to the second pressing plate along the axial direction of the first forming part so that the second pressing plate and the first forming part have an interference fit, and then the position of the first forming part is fixed.

[0026] In some embodiments, the end of the second processed portion away from the first processed portion is the end with the largest diameter of the regular cone body; the end of the first processed portion away from the second processed portion is the end with the smallest diameter of the regular cone body.

[0027] In some embodiments, step S14 is specifically as follows: based on the position of the first forming portion being fixed, the milling cutter is moved to touch the first reference block, and the coordinates of the second processing reference point are determined; wherein the contact point between the milling cutter and the first reference block is a vertex of the first reference block;

[0028] Based on the coordinate determination of the second processing reference point, the milling cutter is then moved to mill the second processing part until the second processing part is milled into the second forming part, wherein the end surface of the second forming part away from the first forming part is a second inclined surface, thereby obtaining an oblique cone cylinder.

[0029] In some embodiments, step K14 is specifically as follows:

[0030] Based on the fact that the position of the first forming portion is fixed, the milling cutter is moved to touch the second reference block to determine the coordinates of the second processing reference point; wherein the contact point between the milling cutter and the second reference block is a vertex of the first reference block;

[0031] Based on the coordinate determination of the second processing reference point, the milling cutter is then moved to mill the second processing part until the second processing part is milled into the second forming part, wherein the end surface of the second forming part away from the first forming part is a second inclined surface, thereby obtaining an oblique cone cylinder.

[0032] In some embodiments, the distance between the first reference block and the second reference block and the end surface of the second processing portion is H, wherein H=(H1-H2) / 2; wherein H1 is the height of the regular cone body, and H2 is the height of the oblique cone body.

[0033] In order to solve the above problems existing in the processing of the existing high-temperature alloy inclined cone cylinder, the present invention has the following advantages:

[0034] 1. By setting a first reference block on the outer surface of the positive cone cylinder, when the first processing part needs to be milled, the second processing part is fixed, and the milling cutter touches the first reference block to determine the coordinates of the first reference point, and then the milling cutter is moved to the first processing part, and the first processing part is processed according to the set program to finally obtain the first forming part; then the position of the second processing part and the first forming part are rotated and swapped, and then the first forming part is fixed, and the milling cutter touches the first reference block to determine the coordinates of the second reference point to process the second processing part to obtain the second forming part. Since the positions of the first forming part and the second processing part are swapped, the coordinates of the point on the second processing part change from (X, Y, Z) to (-X , -Y, -Z), so that when milling the second processing part, it is convenient to touch the milling cutter to the rotated first reference block, determine the second processing reference point, and add a minus sign to the coordinate of the reference point in the program, so that the (X, Y, Z) in the program can be changed to (-X, -Y, -Z), corresponding to the second reference point on the rotated second processing part, so that the milling of the second processing part according to the preset program can be realized, which solves the problem that the outer surface of the positive cone cylinder is an inclined surface, the shape of the blank after the first processing is irregular, and the position of the original fixed end and the processing end needs to be swapped during the processing, making it difficult to determine the position of the processing reference point, thereby causing processing difficulties.

[0035] 2. By setting a first reference block and a second reference block on the outer surface of the positive cone cylinder, and the first reference block and the second reference block are set in mirror symmetry, when it is necessary to mill the first processing part, the second processing part is fixed, and the milling cutter touches the first reference block to determine the coordinates of the first reference point, and then the milling cutter is moved to the first processing part, and the first processing part is processed according to the installed set program to finally obtain the first formed part; then the position of the second processing part and the first formed part is flipped and swapped, and then the first formed part is fixed, and the milling cutter touches the second reference block to determine the coordinates of the second reference point to process the second processing part to obtain the second formed part. Since the first reference block and the second reference block are mirror symmetric, the parts to be processed after flipping are determined by the touch point of the second reference block. The second reference point, the coordinates of the point on the second processing part are changed from (X, Y, Z) to (-X, -Y, -Z). This makes it easier to mill the second processing part. Just touch the milling cutter to the rotated second reference block to determine the second processing reference point, and add a minus sign to the coordinate of the reference point in the program. The (X, Y, Z) in the program can be changed to (-X, -Y, -Z), corresponding to the second reference point on the rotated second processing part. This enables the second processing part to be milled according to a pre-set program, solving the problem that the outer surface of the positive cone is an inclined surface, the shape of the blank after the first processing is irregular, and the position of the original fixed end and the processing end needs to be swapped during the processing, making it difficult to determine the position of the processing reference point, which in turn causes processing difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A flow chart of a method for processing an oblique cone cylinder in some embodiments;

[0037] Figure 2 is a schematic diagram of the connection between the first reference block and the second processing part in some embodiments;

[0038] Figure 3 is a schematic diagram of milling of the first processing portion in some embodiments;

[0039] Figure 4 is a schematic diagram of milling of the second processing portion in some embodiments;

[0040] Figure 5 is a schematic diagram of the connection between the first reference block and the second reference block and the second processing part respectively in some embodiments;

[0041] Figure 6 is a schematic diagram of milling of a first processing portion in some embodiments;

[0042] Figure 7 is a schematic diagram of milling of the second processing portion in some embodiments;

[0043] Figure 8is a structural schematic diagram of a first reference block;

[0044] Fig. 9 Schematic diagram of the positions of the rotation axis and the flip axis.

[0045] In the figure: 10, right cone cylinder; 11, first processing part; 12, second processing part; 20, first pressure plate; 30, second pressure plate; 40, first reference block; 50, second reference block; 60, oblique cone cylinder; 61, first forming part; 62, second forming part; 70, rotation axis; 80, flip axis. DETAILED DESCRIPTION

[0046] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0047] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0048] The machine tool coordinate system in the NC programming coordinates is used to describe the reference coordinate system of the machine tool. It usually takes the machine tool reference point (the reference point of the milling cutter in the present invention) as the origin, and determines the direction and position of the X, Y, and Z coordinate axes of the machine tool. The workpiece (which can be understood as the positive cone cylinder 10 in the present invention) coordinate system is a coordinate system that describes the position of the workpiece relative to the machine tool coordinate system. In NC programming, the workpiece is usually placed on the machine tool workbench, and a workpiece coordinate system is established to describe the position and shape of the workpiece (by measuring the shape of the workpiece and establishing a model in the processing system). By establishing the workpiece coordinate system, the cutting position and motion trajectory in the processing program can be accurately described.

[0049] In most numerical control programming, a three-axis coordinate system (X, Y, Z) is often used to describe the motion of a machine tool (a milling cutter in this invention). By controlling the motion of the three axes, the processing of complex workpieces can be achieved.

[0050] The coordinate points in NC programming represent the specific position of the milling cutter in the workpiece coordinate system. When writing a NC program, the position information of each coordinate point needs to be specified. Therefore, NC programming coordinates are used to define the processing path and position of the NC machine tool. When writing a NC program, technicians need to select a suitable coordinate system and reasonable coordinate points based on factors such as the shape of the workpiece and the processing method to achieve the desired processing effect.

[0051] The purpose of tool setting (in the present invention, the coordinates of the first processing reference point or the coordinates of the second processing reference point are determined by the milling cutter touching the first reference block 40, or the coordinates of the second processing reference point are determined by the milling cutter touching the second reference block 50) is to establish a workpiece coordinate system. Intuitively speaking, tool setting is to establish the position of the workpiece on the machine tool worktable, which is actually to find the coordinates of the tool setting point in the machine tool coordinate system. For CNC lathes, the tool setting point (the coordinates of the first processing reference point or the coordinates of the second processing reference point in the present invention) must be selected before processing. The tool setting point refers to the starting point of the tool movement relative to the workpiece when the workpiece is processed by a CNC machine tool.

[0052] When setting the tool, the tool position point should be coincident with the tool setting point. The so-called tool position point refers to the positioning reference point of the tool (which can be understood as the first processing reference point and the second processing reference point in the present invention). For most turning tools, the tool position point is the tool tip. The purpose of tool setting is to determine the absolute coordinate value of the tool setting point (or the workpiece origin) in the machine tool coordinate system and measure the tool position deviation value of the tool. The accuracy of tool setting point alignment directly affects the processing accuracy. The tool or turning tool described in the present invention can be equivalent to a milling cutter.

[0053] In the present invention, since the normal cone cylinder 10 is processed into the oblique cone cylinder 60, the two ends of the normal cone cylinder 10 need to be milled into inclined end faces during the processing, and the processing steps are to fix one end first, process the other end, and after the processing of the other end is completed, flip or rotate the position, fix one end and then process the other end. After the rotation or flip position, the positioning reference point of the milling cutter during the original processing has changed. Since the outer surface of the transition cylinder (the transition shape from the normal cone cylinder 10 to the oblique cone cylinder 60) after processing is an inclined surface, and the shape of the transition cylinder after the first processing is irregular, and the position of the original fixed end and the processing end needs to be swapped during the processing, the original reference point is no longer applicable to the processing of the transition cylinder (because the position of the transition cylinder has changed), and the reference point needs to be repositioned, which brings difficulty to the entire processing.

[0054] This embodiment discloses a method for processing an oblique cone cylinder 60. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8, Fig. 9 As shown, the following steps may be included:

[0055] Step S11, based on obtaining the positive tapered cylinder 10, fixing the first reference block 40 to the outer surface of the second processed portion 12 of the positive tapered cylinder 10;

[0056] Step S12, fixing the second processing part 12, moving the milling cutter to touch the first reference block 40 to determine the coordinates of the first processing reference point, and then milling the first processing part 11 of the positive cone cylinder 10 until the first processing part 11 is milled into a first forming part 61; wherein the outer surface of the first processing part 11 and the outer surface of the second processing part 12 are located on the same inclined plane, and the inner surface of the first processing part 11 and the inner surface of the second processing part 12 are located on the same inclined plane;

[0057] Step S13, rotating and swapping the positions of the first forming portion 61 and the second processing portion 12, and then fixing the first forming portion 61;

[0058] Step S14 , moving the milling cutter to touch the first reference block 40 to determine the coordinates of the second processing reference point, and then moving the milling cutter to mill the second processing portion 12 until the second processing portion 12 is milled into a second forming portion 62 to obtain an oblique cone cylinder 60 .

[0059] In the present embodiment, the length, width, height and other relevant parameters of the right cone cylinder 10 are measured before processing, and the right cone cylinder 10 is modeled in the system to obtain a model identical to the right cone cylinder 10. In the present embodiment, by setting a first reference block 40 on the outer surface of the right cone cylinder 10, when it is necessary to mill the first processing part 11, the second processing part 12 is fixed, and the milling cutter touches the first reference block 40 to determine the coordinates of the first reference point, and then the milling cutter is moved to the first processing part 11, and the first processing part 11 is milled according to the installed set program to finally obtain the first formed part 61; then the second processing part 12 is rotated and the position of the first formed part 61 is swapped, and then the first formed part 61 is fixed, and the milling cutter touches the first reference block 40 to determine the coordinates of the second reference point to mill the second processing part 12 to obtain the second formed part 62. Since the positions of the first formed part 61 and the second processing part 12 are swapped, the second processing part 12 is The coordinates of the point on the part 12 are changed from (X, Y, Z) to (-X, -Y, -Z), so that when the second processing part 12 is milled, it is only necessary to touch the milling cutter to the rotated first reference block 40 to determine the second processing reference point, and add a minus sign to the coordinate point of the reference point in the program, so that the (X, Y, Z) in the program can be changed to (-X, -Y, -Z), corresponding to the second reference point on the rotated second processing part 12, so that the milling of the second processing part 12 can be achieved. Since the outer surface of the positive cone cylinder 10 is an inclined surface, and the shape of the blank after the first processing is irregular, and the position of the original fixed end and the processing end needs to be swapped during the processing, the position of the processing reference point is difficult to determine, which causes processing difficulties. In this embodiment, the method of touching the point on the first reference block 40 to convert to the point on the first processing part 11 or the second processing part 12 is consistent with the following another method for processing the oblique cone cylinder 60.

[0060] In this embodiment, if Fig. 9 As shown, the rotation axis 70 and the flip axis 80 intersect at the midpoint (point O) of the center height line of the right cone cylinder 10, and the rotation axis 70 and the flip axis 80 are perpendicular to each other and are located in the same plane; in the present invention, during the rotation of the second processing part 12, the rotation of its central axis can be understood as the central axis of the second processing part 12 coincides with the rotation axis 70, and rotates 180° with point O as the rotation center in the plane determined by the rotation axis 70 and the flip axis 80; the flipping of the second processing part can be understood as the second processing part flipping 180° around the flip axis 80.

[0061] In some embodiments, Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the present invention also provides another method for processing the oblique cone cylinder 60, including the following steps.

[0062] Step K11, based on obtaining the right conical cylinder 10, the first reference block 40 and the second reference block 50 are respectively fixed to the outer surface of the second processed portion 12 of the right conical cylinder 10 with the central cross section of the axial direction of the right conical cylinder 10 as the mirror surface;

[0063] Step K12, fixing the second processing part 12, moving the milling cutter to touch the first reference block 40 to determine the coordinates of the first processing reference point, and then milling the first processing part 11 of the positive cone cylinder 10 until the first processing part 11 is milled into a first forming part 61; wherein the outer surface of the first processing part 11 and the outer surface of the second processing part 12 are located on the same inclined plane, and the inner surface of the first processing part 11 and the inner surface of the second processing part 12 are located on the same inclined plane;

[0064] Step K13, flipping and swapping the positions of the first forming portion 61 and the second processing portion 12, and then fixing the first forming portion 61;

[0065] Step K14, move the milling cutter to touch the second reference block 50 to determine the coordinates of the second processing reference point, and then move the milling cutter to mill the second processing part 12 until the second processing part 12 is milled into a second forming part 62 to obtain an oblique cone cylinder 60.

[0066] In this embodiment, the size and shape of the second reference block 50 are consistent with those of the first reference block 40 , and the connection method between the second reference block 50 and the second processing portion 12 is also consistent with the connection method between the second reference block 50 and the first processing portion 11 .

[0067] In this embodiment, based on the clamping method designed for the positive cone cylinder 10, the positions of the second processing portion 12 and the first forming portion 61 need to be swapped during the reprocessing process. Therefore, it is necessary to re-set the tool (i.e., re-determine the processing reference point). However, since there are no holes on the surface of the positive cone cylinder 10, the surface curve of the transition cylinder is also difficult to determine and calculate, which makes it difficult to select a reliable tool setting point on the transition cylinder. In the present invention, this problem can be well solved by setting the first reference block 40 and the second reference block 50 for the following reasons:

[0068] The flipping of the second processing part 12 can be regarded as the positive and negative inversion of the Z axis (up and down) and the Y axis (front and back) in the coordinate system of the second processing part 12. The contact point between the first reference block 40 and the second processing part 12 and the contact point between the second reference block 50 and the second processing part 12 are symmetrical about the X axis. After the position of the second processing part 12 and the first forming part 61 are swapped, the contact point between the second reference block 50 and the second processing part 12 can be regarded as the positive and negative inversion of the X axis of the contact point between the second processing part 12 and the first reference block 40 before the position is changed. That is to say, the second processing part 12 is flipped and the milling cutter touches the second reference block 50 to determine the coordinates of the second processing reference point, so that a new coordinate system of the second processing part 12 can be established. Compared with the original workpiece coordinate system, the three coordinates of all the coordinate points (X, Y, Z) on the second processing part 12 in the new second processing part 12 coordinate system are inverted in positive and negative relation. That is to say, if the coordinates of the first processing reference point are regarded as (X, Y, Z), the coordinates of the second processing reference point after flipping are (-X, -Y, -Z). In this way, there is no need to measure the shape of the transition cylinder and remodel it during programming, nor is there any need to reprogram. Only a positive and negative conversion instruction needs to be added to the machine tool program, and the coordinate point established by the system can be changed from (X, Y, Z) to (-X, -Y, -Z), which can correspond to the coordinates of the second processing part 12 after flipping, thereby realizing the processing of the transition cylinder. The method of finding the second processing reference point is very simple in operation, which greatly reduces the workload and reduces the difficulty.

[0069] In this embodiment, in step K11, after obtaining the right cone cylinder 10, the relevant parameters of the right cone cylinder 10 are input into the processing system by measuring the length, width, height and other relevant parameters of the right cone cylinder 10, and then the right cone cylinder 10 is modeled so that there is also a model in the processing program that is consistent with the shape of the right cone cylinder 10. In this embodiment, the method of fixing the first reference block 40 and the second reference block 50 can be: first, the right cone cylinder 10 is fixed on the turntable, and the first reference block 40 is glued and fixed to the outer surface of the second processing part 12 of the right cone cylinder 10, such as Figure 5 , Figure 8As shown, in this embodiment, point B of the first reference block 40 can be bonded and fixed on the outer surface of the second processing part 12. In order to ensure the firmness of the bonding of the first reference block 40, an adhesive can be added accordingly to fill the space between the first reference block 40 and the second processing part 12, thereby further enhancing the bonding force between the first reference block 40 and the second processing part 12. In addition to fixing the first reference block 40 and the second reference block 50 by bonding, in this embodiment, the first reference block 40 can also be fixed by welding. The size of the welding point can be adjusted as needed. Without affecting the overall strength, shape and accuracy requirements of the positive cone cylinder 10, the welding point is sufficient to meet the positioning needs of the first reference block 40. In order to facilitate the determination of the coordinates of the first processing reference point, in this embodiment, the first reference block 40 can be set as a cube with a side length of H3, and point B is located at the center point of its side length. When bonding the first reference block 40, the surface where the center axis of the right cone body 10 is located can pass through point B, and the upper surface of the first reference block 40 can be parallel to the horizontal section of the right cone body 10, and the horizontal section is perpendicular to the center axis of the right cone body 10. This is done to facilitate the conversion of the vertex where the milling cutter touches the first reference block 40 or the point where the second reference block 50 touches during processing into a point on the outer surface of the second processing part 12, thereby determining the coordinates of the first processing reference point and the coordinates of the second processing reference point.

[0070] In this embodiment, after the first reference block 40 is bonded and fixed, the contact point between the first reference block 40 and the second processing part 12 can be touched by the ejector pin of a dial indicator, and the dial indicator is fixed, and then the control dial is rotated 180°, and the positive cone cylinder 10 is also rotated 180°, and the position pointed by the ejector pin is the contact point between the second reference block 50 and the second processing part 12. In this embodiment, the bonding and fixing method of the second reference block 50 and the second processing part 12 is the same as the bonding and fixing method of the first reference block 40 and the second processing part 12, and after the first reference block 40 and the second reference block 50 are bonded and fixed, they are fixed on the outer surface of the second processing part 12 of the positive cone cylinder 10 with the central cross section of the axial direction of the positive cone cylinder 10 as the mirror surface.

[0071] In this embodiment, if Figure 5 As shown, in step K12, after the first reference block 40 and the second reference block 50 are fixed to the outer surface of the second processing portion 12, the second processing portion 12 can be located below the first processing portion 11, and in order to facilitate the processing of the right cone cylinder 10, the right cone cylinder 10 can be set upright.

[0072] In this embodiment, if Figure 5 , Figure 8As shown, step S2, the mobile milling cutter touches the first reference block 40 to determine the coordinates of the first processing reference point. Specifically, after the milling cutter touches point A of the first reference block 40, the coordinates of point A are determined to be (X, Y, Z), and the coordinates of the first processing reference point after conversion are (X-0.5H3, Y-H3, Z-H3), and then the first processing portion 11 of the positive cone cylinder 10 is milled until the first processing portion 11 is milled into a first forming portion 61; in this embodiment, the milling of the first processing portion 11 can first mill a first inclined surface at the end of the first processing portion 11, and then mill the inner and outer surfaces of the remaining parts of the first processing portion 11 to finally obtain the first forming portion 61, but in addition to this embodiment, the milling sequence can also be set as needed, as long as the first processing portion 11 can be milled into the first forming portion 61, the milling method of the present invention can be used. When the second processing part 12 is swapped with the first forming part 61 and flipped, the coordinates of the contact point where the milling cutter touches the second reference block 50 and the second processing part 12 change from (X-0.5H3, Y-H3, Z-H3) to {-(X-0.5H3), -(Y-H3), -(Z-H3)} relative to the coordinates of the contact point between the first reference block 40 and the second processing part 12 before the second processing part 12 is flipped; since the modeling has been carried out according to the shape of the positive cone, the contact points of the first reference block 40 and the second reference block 50 and the positive cone body 10 can also be determined in the system construction model, and since the coordinates of the contact points between the flipped second reference block 50 and the second processing part 12 are opposite to the coordinates of the original contact points between the first reference block 40 and the second processing part 12, the system can obtain a positive cone body 10 with a positive and negative coordinate point conversion according to the second processing reference point determined by the second reference block 50, thereby facilitating the processing of the second processing part 12. In this embodiment, the method of determining the second processing reference point by the milling cutter touching the second reference block 50 is the same as the method of determining the first processing reference point, which will not be described in detail herein.

[0073] In this embodiment, the processing method of the milling cutter on the second processing portion 12 can be set as needed. For example, the second inclined surface can be processed first, and then the inner and outer surfaces of the second processing portion 12 can be milled.

[0074] In some embodiments, Figure 5 As shown, the method of fixing the second processing part 12 in step S12 or K12 is specifically:

[0075] The first pressing plate 20 is sleeved on the second processing part 12, and the cylindrical surface of the second processing part 12 is clamped by a chuck, wherein the cylindrical surface of the second processing part 12 is located at the end of the second processing part 12, and the first reference block 40 is located between the first pressing plate 20 and the chuck;

[0076] Based on the chuck clamping the cylindrical surface of the second processing part 12, the first pressure is applied to the first pressure plate 20 along the central axis of the regular cone cylinder 10, so that the inner surface of the first pressure plate 20 is interference fit with part of the outer surface of the second processing part 12, and then the position of the second processing part 12 is fixed.

[0077] In this embodiment, if Figure 2 , Figure 5 As shown, the first pressure is F1, and the force of the chuck to clamp the second processing part 12 is F2. By setting a cylindrical surface of a certain height on the end face of the second processing part 12, a better clamping effect can be achieved when the cylindrical surface of the second processing part 12 is clamped by the chuck, and the second processing part 12 is further clamped by the first pressing plate 20, which can prevent the milling cutter from milling the first processing part 11 and causing the second processing part 12 to be displaced, thereby ensuring the processing accuracy. In this embodiment, the inner surface of the first pressing plate 20 can be further set as an inclined inclined surface, and its inclination angle is the same as the inclination of the outer surface of the second processing part 12, so that the inner surface of the first pressing plate 20 can be interference-fitted with part of the outer surface of the second processing part 12, and the contact surface is maximized. While ensuring that the first pressing plate 20 fixes the second processing part 12, it can also prevent the part of the second processing part 12 that contacts the first pressing plate 20 from being subjected to excessive pressure and causing local deformation.

[0078] In this embodiment, by setting the first reference block 40 and / or the second reference block 50 on the outer surface of the positive cone cylinder 10, when the first processing portion 11 needs to be milled, the second processing portion 12 is fixed, and the milling cutter touches the first reference block 40 to determine the first processing reference point, and then the milling cutter is moved to the first processing portion 11, and the first processing portion 11 is milled according to the set program to finally obtain the first formed portion 61; then the second processing portion 12 and the first formed portion 61 are rotated or flipped so that the positions of the second processing portion 12 and the first formed portion 61 are aligned. The positions are swapped, and then the first forming portion 61 is fixed, the milling cutter touches the first reference block 40 or the second reference block 50, and the second processing reference point is determined, and the second processing portion 12 is processed to obtain the second forming portion 62, and finally the required oblique cone cylinder 60 is obtained, thereby solving the problem that the outer surface of the positive cone cylinder 10 is an inclined surface, and the shape of the transition cylinder after the first processing is irregular, and the position of the original fixed end and the processing end needs to be swapped during the processing, making it difficult to determine the position of the processing reference point, thereby causing processing difficulties.

[0079] In some embodiments, Figure 8 As shown, the first reference block 40 is in the shape of a cube, and the contact point between the first reference block 40 and the second processing portion 12 is the midpoint of the edge of the first reference block 40 .

[0080] In this embodiment, by setting the shape of the first reference block 40 to a cube, it is possible to facilitate determination of the first processing reference point and the second processing reference point. Moreover, in this embodiment, the volume ratio of the first reference block 40 to the regular cone body 10 can be set within a reasonable range, within which the error caused by processing is also within an allowable range.

[0081] In some embodiments, Figure 2 , Figure 5 , Figure 8 As shown, in step S12 or K12:

[0082] The contact point between the milling cutter and the first reference block 40 is a vertex of the first reference block 40 ;

[0083] An end surface of the first formed portion 61 away from the second processed portion 12 is a first inclined surface.

[0084] In this embodiment, the milling cutter touches point A on the first reference block 40, and the first processing reference point is determined by converting point A, and then the first processing part 11 is milled until the first processing part 11 is milled into the first forming part 61; wherein the end of the first forming part 61 away from the second processing part 12 is a first inclined surface. In this embodiment, since the outer surface of the first processing part 11 is a curved surface, it is difficult to determine the reference point on the outer surface of the first processing part 11, and even if the reference point is determined, the reference point is inaccurate. Therefore, by setting the first reference block 40, it is convenient for the milling cutter to find a more accurate reference point. In this embodiment, the milling of the first processing part 11 can first mill out the first inclined surface, and then further mill the inner and outer surfaces of the first processing part 11 to mill off the excess amount. In this way, the moving path of the milling cutter can be smaller while ensuring the milling effect, thereby improving the processing efficiency. In addition, from the perspective of cost, it can also save costs.

[0085] In some embodiments, Figure 3 As shown, step S13 is specifically as follows:

[0086] Based on the first processing portion 11 being milled into a first forming portion 61; rotating and swapping the positions of the first forming portion 61 and the second processing portion 12;

[0087] The second pressing plate 30 is sleeved on the first forming part 61, and the first forming part 61 is clamped with a chuck, and then a second pressure is applied toward the second pressing plate 30 along the axial direction of the first forming part 61, so that the second pressing plate 30 and the first forming part 61 are interference fit, and then the position of the first forming part 61 is fixed.

[0088] In this embodiment, if Figure 3As shown, the force applied by the chuck to the first forming part 61 is F4, and the force applied to the second pressure plate 30 is F3. The force F3 can be applied by a jack to apply a force of the magnitude of F3; and the maximum inner circumference of the second pressure plate 30 and the first forming part 61 is smaller than the maximum inner circumference of the contact between the first pressure plate 20 and the second processing part 12.

[0089] In some embodiments, step K13 is specifically:

[0090] Based on the first processing portion 11 being milled into a first forming portion 61; flipping and swapping the positions of the first forming portion 61 and the second processing portion 12;

[0091] The second pressing plate 30 is sleeved on the first forming part 61, and the first forming part 61 is clamped with a chuck, and then a second pressure is applied toward the second pressing plate 30 along the axial direction of the first forming part 61, so that the second pressing plate 30 and the first forming part 61 are interference fit, and then the position of the first forming part 61 is fixed.

[0092] In this embodiment, if Figure 6 As shown, the force applied by the chuck to the first forming part 61 is F4, and the force applied to the second pressure plate 30 is F3. The force F3 can be applied by a jack to apply a force of the magnitude of F3; and the maximum inner circumference of the second pressure plate 30 and the first forming part 61 is smaller than the maximum inner circumference of the contact between the first pressure plate 20 and the second processing part 12.

[0093] In some embodiments, Figure 2 , Figure 5 As shown, the end of the second processed portion 12 away from the first processed portion 11 is the end of the right cone body 10 with the largest diameter; the end of the first processed portion 11 away from the second processed portion 12 is the end of the right cone body 10 with the smallest diameter.

[0094] In this embodiment, by first fixing the large-diameter end of the positive cone cylinder 10 and processing the small-diameter end, since the cylindrical surface is set on the second processing part 12, the chuck can better clamp the cylindrical surface, and the clamping effect is better. In addition, by first fixing the large-diameter end of the positive cone cylinder 10 and milling the small-diameter end, when the second pressing plate 30 supports the second processing part 12, the second processing part 12 can apply a vertical downward force to the second pressing plate 30, and the minimum outer circumference of the second processing part 12 is greater than the maximum outer circumference of the first forming part 61, so that the second pressing plate 30 can have a better supporting effect on the second forming part 62, and the second pressing plate 30 will not be out of contact with the first forming part 61. Moreover, it is convenient to adjust the height of the end face of the second processing part 12 from the supporting surface (the surface where the machine tool supports the second processing part 12 when processing the first processing part 11) so that the distance between the second processing part 12 and the supporting surface is consistent with the height of the positive cone cylinder 10.

[0095] In some other embodiments, the largest diameter end of the positive cone cylinder 10 can be milled first and then the smallest diameter end of the positive cone cylinder 10 can be milled as needed. The fixing method is as above, but when fixing the largest diameter end of the positive cone cylinder 10 to mill the smallest diameter end of the positive cone cylinder 10, a certain support can be selected to support the first formed portion 61 after milling.

[0096] In some embodiments, Figure 3 As shown, step S14 is specifically as follows:

[0097] Based on the fact that the position of the first forming portion 61 is fixed, the milling cutter is moved to touch the first reference block 40 to determine the coordinates of the second processing reference point; wherein the contact point between the milling cutter and the first reference block 40 is a vertex of the first reference block 40;

[0098] Based on the coordinate determination of the second processing reference point, the milling cutter is then moved to mill the second processing part 12 until the second processing part 12 is milled into the second forming part 62, wherein the end face of the second forming part 62 away from the first forming part 61 is a second inclined surface, thereby obtaining an oblique tapered cylinder 60.

[0099] In this embodiment, the system determines the coordinates of the second processing reference point by the milling cutter touching the first reference block 40 after rotation, and then mills the second processing part 12 to mill the second processing part 12 into the second forming part 62, which solves the problem of not being easy to find the reference point when processing the positive cone cylinder, and can also greatly improve the processing efficiency. In this embodiment, the milling of the second processing part 12 can first mill out the second inclined surface, and then further mill the inner and outer surfaces of the second processing part 12 to mill off the excess amount. Doing so can make the moving path of the milling cutter smaller while ensuring the milling effect, thereby improving the processing efficiency. In addition, from the perspective of cost, it can also save costs.

[0100] In some embodiments, Figure 6 , Figure 7 As shown, step K14 is specifically as follows:

[0101] Based on the fact that the position of the first forming portion 61 is fixed, the milling cutter is moved to touch the second reference block 50 to determine the coordinates of the second processing reference point; wherein the contact point between the milling cutter and the second reference block 50 is a vertex of the first reference block 40;

[0102] Based on the coordinate determination of the second processing reference point, the milling cutter is then moved to mill the second processing part 12 until the second processing part 12 is milled into the second forming part 62, wherein the end face of the second forming part 62 away from the first forming part 61 is a second inclined surface, thereby obtaining an oblique tapered cylinder 60.

[0103] In this embodiment, the system determines the coordinates of the second processing reference point by the milling cutter touching the rotating second reference block 50, and then mills the second processing part 12 to mill the second processing part 12 into the second forming part 62, which solves the problem of not being easy to find the reference point when processing the positive cone cylinder, and can also greatly improve the processing efficiency. In this embodiment, the milling of the second processing part 12 can first mill out the second inclined surface, and then further mill the inner and outer surfaces of the second processing part 12 to mill off the excess amount. Doing so can make the moving path of the milling cutter smaller while ensuring the milling effect, thereby improving the processing efficiency. In addition, from the perspective of cost, it can also save costs.

[0104] The distance between the first reference block 40 and the second reference block 50 and the end surface of the second processing portion 12 is H, wherein H=(H1-H2) / 2; wherein H1 is the height of the regular cone body 10, and H2 is the height of the oblique cone body 60.

[0105] In this embodiment, H=(H1-H2) / 2; wherein H1 is the height of the positive cone body 10, and H2 is the height of the oblique cone body 60. This allows for quick determination of the location of the first reference block 40 at the inclined portion of the second processing portion 12 that needs to be milled, thereby ensuring that the first reference block 40 does not exist in the finally processed oblique cone body, and that the first reference block 40 does not need to be processed again, thereby improving milling efficiency.

[0106] In this embodiment, Figure 1 , Figure 5 As shown, the inclination angle of the first inclined surface and the second inclined surface is α, wherein 18°≤α≤25°. As a preferred embodiment, α may be equal to 20°. However, in some embodiments, the first inclined surface and the second inclined surface with other inclination angles may also be processed as required.

[0107] In some embodiments, 20m / min≤V≤30m / min, 1mm≤D≤2mm, 0.05mm≤M≤0.15mm / r, so that the processing speed can be guaranteed while the milling surface can be relatively regular, thereby obtaining the desired oblique cone cylinder 60.

[0108] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present disclosure.

Claims

1. A method for processing an oblique cone cylinder, characterized in that: The following steps are involved: Step S11, based on obtaining a positive tapered cylinder, fixing a first reference block to an outer surface of a second processed portion of the positive tapered cylinder; Step S12, fixing the second processing part, moving the milling cutter to touch the first reference block to determine the coordinates of the first processing reference point, and then milling the first processing part of the positive cone cylinder until the first processing part is milled into a first forming part; wherein the outer surface of the first processing part and the outer surface of the second processing part are located on the same inclined plane, and the inner surface of the first processing part and the inner surface of the second processing part are located on the same inclined plane; Step S13, rotating and swapping the positions of the first forming part and the second processing part, and then fixing the first forming part; Step S14, moving the milling cutter to touch the first reference block to determine the coordinates of the second processing reference point, and then moving the milling cutter to mill the second processing part until the second processing part is milled into a second forming part to obtain an oblique cone cylinder.

2. A method for processing an oblique cone cylinder, characterized in that: The following steps are involved: Step K11, based on obtaining a positive conical cylinder, fixing the first reference block and the second reference block to the outer surface of the second processed part of the positive conical cylinder respectively with the central cross section of the positive conical cylinder axial direction as the mirror surface; Step K12, fixing the second processing part, moving the milling cutter to touch the first reference block to determine the coordinates of the first processing reference point, and then milling the first processing part of the positive cone cylinder until the first processing part is milled into a first forming part; wherein the outer surface of the first processing part and the outer surface of the second processing part are located on the same inclined plane, and the inner surface of the first processing part and the inner surface of the second processing part are located on the same inclined plane; Step K13, flipping and swapping the positions of the first forming part and the second processing part, and then fixing the first forming part; Step K14, moving the milling cutter to touch the second reference block to determine the coordinates of the second processing reference point, and then moving the milling cutter to mill the second processing part until the second processing part is milled into a second forming part to obtain an oblique cone cylinder.

3. A method for processing an oblique cone cylinder according to claim 1 or 2, characterized in that: In step S12 or K12, the method of fixing the second processing part is specifically: Sleeve the first pressing plate on the second processing part, and clamp the cylindrical surface of the second processing part with a chuck, wherein the cylindrical surface of the second processing part is located at the end of the second processing part, and the first reference block is located between the first pressing plate and the chuck; Based on the chuck clamping the cylindrical surface of the second processing part, the first pressure is applied to the first pressure plate along the central axis of the positive cone cylinder, so that the inner surface of the first pressure plate and the partial outer surface of the second processing part are interference fit, and then the position of the second processing part is fixed.

4. A method for processing an oblique cone cylinder according to claim 3, characterized in that: The first reference block is in the shape of a cube, and the contact point between the first reference block and the second processing part is the midpoint of the edge of the first reference block.

5. The method for processing an oblique cone cylinder according to claim 4, characterized in that: In step S12 or K12: The contact point between the milling cutter and the first reference block is a vertex of the first reference block; An end surface of the first formed portion away from the second processed portion is a first inclined surface.

6. A method for processing an oblique cone cylinder according to claim 5, characterized in that: Step S13 is specifically as follows: Based on the first processed portion being milled into a first formed portion; rotating and swapping the positions of the first formed portion and the second processed portion; The second pressing plate is sleeved on the first forming part and the first forming part is clamped with a chuck, and then a second pressure is applied to the second pressing plate along the axial direction of the first forming part so that the second pressing plate and the first forming part have an interference fit, and then the position of the first forming part is fixed.

7. The method for processing an oblique cone cylinder according to claim 5, characterized in that: Step K13 is specifically as follows: Based on the first processed portion being milled into a first formed portion; flipping and reversing the positions of the first formed portion and the second processed portion; The second pressing plate is sleeved on the first forming part and the first forming part is clamped with a chuck, and then a second pressure is applied to the second pressing plate along the axial direction of the first forming part so that the second pressing plate and the first forming part have an interference fit, and then the position of the first forming part is fixed.

8. A method for processing an oblique cone cylinder according to claim 6 or 7, characterized in that: The end of the second processed portion away from the first processed portion is the end with the largest diameter of the regular cone body; the end of the first processed portion away from the second processed portion is the end with the smallest diameter of the regular cone body.

9. The method for processing an oblique cone cylinder according to claim 6, characterized in that: Step S14 is specifically as follows: Based on the fact that the position of the first forming portion is fixed, the milling cutter is moved to touch the first reference block, and the coordinates of the second processing reference point are determined; wherein the contact point between the milling cutter and the first reference block is a vertex of the first reference block; Based on the coordinate determination of the second processing reference point, the milling cutter is then moved to mill the second processing part until the second processing part is milled into the second forming part, wherein the end surface of the second forming part away from the first forming part is a second inclined surface, thereby obtaining an oblique tapered cylinder.

10. The method for processing an oblique cone cylinder according to claim 2, characterized in that: Step K14 is specifically as follows: Based on the fact that the position of the first forming portion is fixed, the milling cutter is moved to touch the second reference block to determine the coordinates of the second processing reference point; wherein the contact point between the milling cutter and the second reference block is a vertex of the first reference block; Based on the coordinate determination of the second processing reference point, the milling cutter is then moved to mill the second processing part until the second processing part is milled into the second forming part, wherein the end surface of the second forming part away from the first forming part is a second inclined surface, thereby obtaining an oblique tapered cylinder.

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