Slanted hole machining method

Abstract

This application provides a method for machining oblique holes, including: determining the reference position of the workpiece; establishing a boring machine working coordinate system; obtaining the position information of the origin of the boring machine working coordinate system; and calculating the coordinates of the attachment head when it is in the initial machining position. By establishing the boring machine working coordinate system and obtaining the position information of the origin of the boring machine working coordinate system, the coordinates of the attachment head when it is in the initial machining position can be calculated. This achieves the purpose of quickly determining the initial machining position of the attachment head, so that the attachment head can quickly move to the initial machining position according to the calculated coordinates before machining, thereby improving the machining efficiency of oblique holes. At the same time, when the attachment head is in the initial machining position, the boring tool is located on the extension line of the central axis of the oblique hole, thereby ensuring that the travel direction of the boring tool is the axial direction of the oblique hole, which can improve the machining accuracy of oblique holes.

Description

Technical Field

[0001] This application belongs to the field of machining technology, specifically relating to a method for machining oblique holes. Background Technology

[0002] A slanted hole is a hole whose centerline is not perpendicular to the surface of the workpiece being drilled. It includes three types: drilling on a slanted surface, drilling a slanted hole on a flat surface, and drilling a hole on a curved surface.

[0003] In the machining industry, oblique hole machining technology is widely used and plays a significant role. Depending on the user's needs, oblique holes often exist in the same drilled workpiece in different positions, angles, and sizes. Because different drilled workpieces have different structures and different oblique hole locations, the position of the attachment head needs to be determined before machining so that the line connecting the attachment head and the starting point of the oblique hole coincides with the central axis of the oblique hole. Determining the position of the attachment head consumes a considerable amount of time, resulting in low oblique hole machining efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this application is to provide a method for machining oblique holes, which can quickly determine the position of the accessory head to improve the machining efficiency of oblique holes.

[0005] To address the aforementioned problems, this application provides a method for machining oblique holes, comprising:

[0006] Determine the reference position of the workpiece to be processed;

[0007] Establish the working coordinate system of the boring machine;

[0008] Obtain the position information of the origin of the boring machine's working coordinate system;

[0009] Calculate the coordinates of the attachment head when it is in the initial machining position.

[0010] Optionally, determine the reference position of the workpiece to be processed, including:

[0011] Locate the workpiece to be processed.

[0012] Optionally, obtain the position information of the origin of the boring machine's working coordinate system, including:

[0013] Drive the auxiliary probe to move to the first position;

[0014] Drive the auxiliary probe to move to the second position;

[0015] Drive the auxiliary probe to move to the third position.

[0016] Optionally, when the auxiliary probe is in the first position, the auxiliary probe is parallel to the Z-axis of the boring machine's working coordinate system and abuts against the end face of the workpiece.

[0017] Optionally, when the auxiliary probe is in the second position, the auxiliary probe is parallel to the Y-axis of the boring machine's working coordinate system and abuts against the end face of the workpiece.

[0018] Optionally, when the auxiliary probe is in the third position, the auxiliary probe is parallel to the Z-axis of the boring machine's working coordinate system and abuts against the outer wall surface of the workpiece.

[0019] Optionally, the coordinate value of the attachment head on the Y-axis of the boring machine's working coordinate system conforms to the formula Y = -R9 * SIN(R10);

[0020] The coordinate value of the attachment head on the Z-axis of the boring machine's working coordinate system conforms to the formula Z=-R9*(1-COS(R10));

[0021] Where R9 is the length of the auxiliary probe and R10 is the angle for machining the inclined hole.

[0022] Optionally, the auxiliary probe includes a ball head, which is positioned at the end of the auxiliary probe close to the workpiece.

[0023] Optionally, the auxiliary probe is equipped with an acoustic-optical test circuit, which is connected when the auxiliary probe comes into contact with the workpiece.

[0024] Optionally, the length of the auxiliary probe is the same as the length of the boring tool.

[0025] Beneficial effects

[0026] The oblique hole machining method provided in the embodiments of the present invention can calculate the coordinates of the attachment head when it is in the initial machining position by establishing a boring machine working coordinate system and obtaining the position information of the origin of the boring machine working coordinate system. This can achieve the purpose of quickly determining the initial machining position of the attachment head, so that the attachment head can quickly move to the initial machining position according to the calculated coordinates before machining, thereby improving the machining efficiency of oblique holes. At the same time, when the attachment head is in the initial machining position, the boring tool is located on the extension line of the central axis of the oblique hole, thereby ensuring that the travel direction of the boring tool is the axial direction of the oblique hole, which can improve the machining accuracy of oblique holes. Attached Figure Description

[0027] Figure 1 This is a flowchart of an optional embodiment of the oblique hole machining method of this application;

[0028] Figure 2 This is a schematic diagram of the structure of a boring machine according to an optional embodiment of this application;

[0029] Figure 3 This is a schematic diagram illustrating the structure for obtaining the position information of the origin of the working coordinate system of a boring machine according to an optional embodiment of this application.

[0030] Figure 4This is a schematic diagram of the structure of the auxiliary probe simulating the movement of a boring tool in an optional embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of an optional embodiment of this application, showing the attachment head driving the boring tool to the initial machining position.

[0032] Figure 6 This is a schematic diagram of the structure of the attachment head driving the boring tool to the initial machining position in another optional embodiment of this application.

[0033] The reference numerals in the attached figures are as follows:

[0034] 1. Workpiece to be machined; 2. Accessory head; 3. Boring tool; 4. Auxiliary probe; 5. Ball head; 6. Origin; 7. Initial machining position. Detailed Implementation

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] See also Figures 1 to 4 As shown, according to an embodiment of this application, a method for machining oblique holes is provided, which is applied to a CNC boring machine. The CNC boring machine includes a worktable, an attachment head 2, and a boring tool 3. The worktable is used to support the workpiece 1 to be machined. The boring tool 3 is connected to the attachment head 2. The attachment head 2 is used to adjust the angle between the boring tool 3 and the workpiece 1 to be machined and to drive the boring tool 3 to move along its axial direction.

[0040] The CNC boring machine also includes a spindle, and the boring tool 3 is connected to the spindle. The spindle is used to drive the boring tool 3 to rotate.

[0041] Specifically, when machining a slanted hole, the machining angle is known. At this time, determining the initial machining position 6 of the attachment head 2 will determine the position of the boring tool 3.

[0042] When the attachment head 2 is located in the initial machining position 6, the distance between the attachment head 2 and the oblique hole is the same as the length of the boring tool 3. The line connecting the attachment head 2 and the oblique hole is the extension line of the central axis of the oblique hole. At this time, the central axis of the boring tool 3 coincides with the central axis of the oblique hole.

[0043] The method for machining oblique holes includes the following steps:

[0044] Step S1: Determine the reference position of the workpiece 1 to be processed.

[0045] The workpiece 1 to be processed can be a part of any shape, and this application does not impose any further limitations.

[0046] Specifically, before machining the inclined hole in workpiece 1, it can be hoisted onto the workbench using a crane or other hoisting equipment. Then, it can be fixed on the workbench using a pressure plate or clamps to prevent slippage during the machining of the inclined hole. This improves the stability of the inclined hole machining process, thereby increasing the machining accuracy and reducing the defect rate of the finished product.

[0047] Step S2: Establish the working coordinate system of the boring machine.

[0048] The working coordinate system of the boring machine can be a three-dimensional spatial coordinate system, which includes the Y-axis and the Z-axis.

[0049] Specifically, in this embodiment, the Y-axis and Z-axis are perpendicular. The Z-axis is a horizontal axis, i.e., the horizontal axis; the Y-axis is a vertical axis, i.e., the vertical axis.

[0050] The boring machine's working coordinate system also includes the origin 5. The vertically upward direction of the origin 5 is the positive half-axis of the Y-axis, and the vertically downward direction of the origin 5 is the negative half-axis of the Y-axis. The horizontally rightward direction of the origin 5 is the positive half-axis of the Z-axis, and the horizontally leftward direction of the origin 5 is the negative half-axis of the Z-axis.

[0051] By establishing a working coordinate system for the boring machine, the positions of the workpiece 1, the accessory head 2, and the boring tool 3 can be visualized within the working coordinate system, thereby improving the machining accuracy of the inclined hole in the workpiece 1 and increasing the yield of the finished product.

[0052] Step S3: Obtain the position information of the origin 5 of the boring machine's working coordinate system.

[0053] Before the attachment head 2 moves to the initial machining position 6, the attachment head 2 is located at the origin 5 of the boring machine's working coordinate system. At this time, the line connecting the attachment head 2 and the starting point of the inclined hole machining is parallel to the Z-axis of the boring machine's working coordinate system.

[0054] The starting point for the oblique hole machining is the entry point for the oblique hole machining of the workpiece 1, that is, the boring tool 3 starts drilling from the starting point for the oblique hole machining.

[0055] Understandably, see Figure 5 and Figure 6 As shown, the position of the origin 5 of the boring machine's working coordinate system is related to the starting point of the inclined hole machining and the length of the boring tool 3. Different starting points of the inclined hole machining and different lengths of the boring tool 3 correspond to different positions of the origin 5 of the boring machine's working coordinate system.

[0056] Specifically, since the data related to the boring tool 3 will be cleared after the CNC boring machine is working, in this embodiment, the auxiliary probe 4 is used to simulate the boring tool 3 to find the position of the origin 5 of the boring machine's working coordinate system.

[0057] The length of the auxiliary probe 4 is the same as the length of the boring tool 3.

[0058] Step S4: Calculate the coordinates of attachment head 2 when it is located at the initial processing position 6.

[0059] In this embodiment of the application, the coordinate value of the attachment head 2 on the Y-axis of the boring machine working coordinate system conforms to the formula Y = -R9*SIN(R10); the coordinate value of the attachment head 2 on the Z-axis of the boring machine working coordinate system conforms to the formula Z = -R9*(1-COS(R10)).

[0060] Where R9 is the length of the auxiliary probe 4, and R10 is the angle for machining the oblique hole.

[0061] For details, see Figure 5 and Figure 6As shown, before the attachment head 2 moves to the initial machining position 6, the attachment head 2 is located at the origin 5 of the boring machine's working coordinate system, that is, the coordinates of the attachment head 2 are (0, 0). At this time, the line connecting the attachment head 2 and the starting point of the inclined hole machining is parallel to the Z-axis of the boring machine's working coordinate system, and the boring tool 3 can be aligned with the starting point of the inclined hole machining. After the attachment head 2 moves to the initial machining position 6, the coordinates of the attachment head 2 are (Z, Y). At this time, the line connecting the attachment head 2 and the starting point of the inclined hole machining is the extension line of the central axis of the inclined hole, and the boring tool 3 can move along the axial direction of the inclined hole.

[0062] It is understandable that by calculating the coordinates of the attachment head 2 when it is in the initial machining position 6, the attachment head 2 can drive the boring tool 3 to move quickly and accurately to the initial machining position 6, and then drive the boring tool 3 to rotate to the angled hole machining angle to perform the angled hole machining work on the workpiece 1, thereby improving the angled hole machining efficiency and the angled hole machining accuracy.

[0063] The inclined hole machining method provided in the embodiments of the present invention can calculate the coordinates of the attachment head 2 when it is located in the initial machining position 6 by establishing a boring machine working coordinate system and obtaining the position information of the origin 5 of the boring machine working coordinate system. This can achieve the purpose of quickly determining the initial machining position 6 of the attachment head 2, so that the attachment head 2 can quickly move to the initial machining position 6 according to the calculated coordinates before machining, thereby improving the machining efficiency of inclined holes. At the same time, when the attachment head 2 is located in the initial machining position 6, the boring tool 3 is located on the extension line of the central axis of the inclined hole, thereby ensuring that the travel direction of the boring tool 3 is the axial direction of the inclined hole, which can improve the machining accuracy of the inclined hole.

[0064] In the above embodiments, determining the reference position of the workpiece 1 includes:

[0065] Step S101: Align the workpiece 1 to be processed.

[0066] Before machining the inclined hole in the workpiece 1, the workpiece 1 can be hoisted onto the workbench using a crane or other hoisting equipment. Then, a dial indicator can be used to continue aligning the workpiece 1. Finally, a pressure plate or clamps can be used to fix the workpiece 1 on the workbench.

[0067] Specifically, the workpiece 1 is aligned so that its center coincides with the rotation center of the worktable.

[0068] Understandably, the worktable can be used to rotate the workpiece 1 to machine oblique holes at different positions on the same height of the workpiece 1. Since the center of the workpiece 1 coincides with the rotation center of the worktable, the machining accuracy of oblique holes at different positions on the same height of the workpiece 1 can be improved.

[0069] In the above embodiments, obtaining the position information of the origin 5 of the boring machine's working coordinate system includes:

[0070] Step S301: Drive the auxiliary probe 4 to move to the first position.

[0071] The auxiliary probe 4 includes a ball head 41, which is located at one end of the auxiliary probe 4 near the workpiece 1 and is used to contact the workpiece 1.

[0072] It is understandable that, since the ball head 41 is spherical, the auxiliary probe 4 and the workpiece 1 can form point contact, thereby improving the response efficiency of the auxiliary probe 4.

[0073] The auxiliary probe 4 is equipped with an acoustic and optical test circuit. When the auxiliary probe 4 comes into contact with the workpiece 1, the acoustic and optical test circuit can be connected and generate an acoustic and optical prompt so that the operator can accurately determine the position of the origin 5 of the boring machine's working coordinate system.

[0074] In this embodiment of the application, the location of the zero point of the Y-axis of the boring machine working coordinate system can be determined by driving the auxiliary probe 4 to move to the first position.

[0075] For details, see Figure 3 As shown, when the auxiliary probe 4 is in the first position, it is parallel to the Z-axis of the boring machine's working coordinate system, and the ball head 41 of the auxiliary probe 4 is in contact with the end face of the workpiece 1. At this time, the zero point of the Y-axis of the boring machine's working coordinate system is located below the auxiliary probe 4, and the distance from the auxiliary probe 4 is the sum of the radius of the ball head 41 and the distance from the starting point of the inclined hole machining to the end face of the workpiece 1.

[0076] Step S302: Drive the auxiliary probe 4 to move to the second position.

[0077] In this embodiment of the application, the length of the auxiliary probe 4, i.e. the length of the boring tool 3, can be determined by driving the auxiliary probe 4 to move to the second position.

[0078] Specifically, when the auxiliary probe 4 is in the second position, it is parallel to the Y-axis of the boring machine's working coordinate system, and the ball head 41 of the auxiliary probe 4 is in contact with the end face of the workpiece 1. Since the zero point of the Y-axis of the boring machine's working coordinate system has been determined in step S301, the length of the auxiliary probe 4 can be determined by taking a reading in the Y-axis direction of the auxiliary probe 4 in the boring machine's working coordinate system.

[0079] The length of the auxiliary probe 4 can be used in step S303 to determine the location of the zero point of the Z-axis of the boring machine's working coordinate system.

[0080] Step S303: Drive the auxiliary probe 4 to move to the third position.

[0081] In this embodiment of the application, the location of the zero point of the Z-axis of the boring machine's working coordinate system can be determined by driving the auxiliary probe 4 to move to the third position.

[0082] Specifically, when the auxiliary probe 4 is in the third position, it is parallel to the Z-axis of the boring machine's working coordinate system, and the ball head 41 of the auxiliary probe 4 is in contact with the outer wall surface of the workpiece 1. At this time, the zero point of the Z-axis of the boring machine's working coordinate system is located to the right of the auxiliary probe 4, and the distance from the workpiece 1 is the length of the auxiliary probe 4. Since the length of the auxiliary probe 4 has been determined in step S302, the position of the zero point of the Z-axis of the boring machine's working coordinate system can also be determined.

[0083] The oblique hole machining method provided in the embodiments of the present invention includes:

[0084] Step S1: Determine the reference position of the workpiece 1 to be processed;

[0085] Step S101: Align part 1 to be processed;

[0086] Step S2: Establish the working coordinate system of the boring machine;

[0087] Step S3: Obtain the position information of the origin 5 of the boring machine's working coordinate system;

[0088] Step S301: Drive the auxiliary probe 4 to move to the first position;

[0089] Step S302: Drive the auxiliary probe 4 to move to the second position;

[0090] Step S303: Drive the auxiliary probe 4 to move to the third position;

[0091] Step S4: Calculate the coordinates of attachment head 2 when it is located at the initial processing position 6.

[0092] The oblique hole machining method provided in the embodiments of the present invention firstly aligns and installs the workpiece 1 onto the worktable of the boring machine, then establishes the working coordinate system of the boring machine to determine the positions of the workpiece 1, the boring tool 3, and the attachment head 2. Then, with the help of the auxiliary probe 4, the position information of the origin 5 of the working coordinate system of the boring machine is obtained, that is, the position of the attachment head 2 when the boring tool 3 is parallel to the Z-axis of the working coordinate system of the boring machine and aligned with the starting point of the oblique hole machining. Then, the coordinates of the initial machining position 6 are calculated according to the length of the boring tool 3 and the oblique hole machining angle. Finally, the attachment head 2 is driven to move from the origin 5 of the working coordinate system of the boring machine to the initial machining position 6 according to the coordinates of the initial machining position 6 and rotate the boring tool 3 so that the travel direction of the boring tool 3 is the axial direction of the oblique hole.

[0093] The inclined hole machining method provided in the embodiments of the present invention can calculate the coordinates of the attachment head 2 when it is located in the initial machining position 6 by establishing a boring machine working coordinate system and obtaining the position information of the origin 5 of the boring machine working coordinate system. This can achieve the purpose of quickly determining the initial machining position 6 of the attachment head 2, so that the attachment head 2 can quickly move to the initial machining position 6 according to the calculated coordinates before machining, thereby improving the machining efficiency of inclined holes. At the same time, when the attachment head 2 is located in the initial machining position 6, the boring tool 3 is located on the extension line of the central axis of the inclined hole, thereby ensuring that the travel direction of the boring tool 3 is the axial direction of the inclined hole, which can improve the machining accuracy of the inclined hole.

[0094] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0095] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A method for machining oblique holes, characterized in that, include: Determine the reference position of the workpiece to be processed (1); Establish the working coordinate system of the boring machine; Obtain the position information of the origin (5) of the boring machine's working coordinate system; Calculate the coordinates of the attachment head (2) when it is in the initial processing position (6); Obtain the position information of the origin (5) of the boring machine's working coordinate system, including: Drive the auxiliary probe (4) to move to the first position; Drive the auxiliary probe (4) to move to the second position; Drive the auxiliary probe (4) to move to the third position; When the auxiliary probe (4) is in the first position, the auxiliary probe (4) is parallel to the Z-axis of the boring machine working coordinate system and abuts against the end face of the workpiece (1); When the auxiliary probe (4) is in the second position, the auxiliary probe (4) is parallel to the Y-axis of the boring machine working coordinate system and abuts against the end face of the workpiece (1); When the auxiliary probe (4) is in the third position, the auxiliary probe (4) is parallel to the Z-axis of the boring machine working coordinate system and abuts against the outer wall surface of the workpiece (1); The length of the auxiliary probe (4) is the same as the length of the boring tool (3).

2. The method for machining oblique holes according to claim 1, characterized in that, Determine the reference position of the workpiece (1) to be processed, including: Locate the workpiece to be processed (1).

3. The method for machining oblique holes according to claim 1, characterized in that, The coordinate values ​​of the attachment head (2) on the Y-axis of the boring machine's working coordinate system conform to the formula. ; The coordinate values ​​of the attachment head (2) on the Z-axis of the boring machine's working coordinate system conform to the formula. ; Where R9 is the length of the auxiliary probe (4) and R10 is the angle for machining the oblique hole.

4. The method for machining oblique holes according to claim 1, characterized in that, The auxiliary probe (4) includes a ball head (41), which is located at one end of the auxiliary probe (4) near the workpiece (1).

5. The method for machining oblique holes according to claim 1, characterized in that, The auxiliary probe (4) is equipped with an acoustic and optical test circuit. When the auxiliary probe (4) comes into contact with the workpiece (1), the acoustic and optical test circuit is connected.

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