Cutter overlapping variable-angle groove machining method

Abstract

The invention discloses a cutter overlapping variable-angle groove machining method, which relates to the technical field of single-point diamond ultra-precision machining, and comprises the following steps: S1, placing two cutters on two coaxial controllable rotating shafts in an up-and-down overlapping manner, and adjusting the tips of the two cutters to the center of the controllable rotating shafts, the tool noses of the two tools are placed on the rotation axis of the controllable rotating shaft in a high-low mode; and S2, then tool noses of the two tools are aligned. The controllable rotating shaft and the cutting mechanism are arranged and are matched with the two cutters to be used in an up-and-down overlapping mode, so that the two cutters can synchronously rotate along with rotation of the controllable rotating shaft, corresponding angle adjustment can be conducted according to the angle needed by a groove, groove angle self-defined cutting is achieved, the flexibility and accuracy of the cutting angle are improved, and the machining efficiency is improved. And the machining efficiency is improved, the machining cost is reduced, and the machining of the complex groove becomes more efficient and accurate.

Description

Technical Field

[0001] This invention relates to the field of single-point diamond ultra-precision machining technology, specifically to a method for machining grooves with overlapping cutting tools at varying angles. Background Technology

[0002] The current mainstream processing method is the angle tool customization method, which means that a diamond tool with a corresponding angle is customized according to the required angle of the groove. The groove is processed by equal angle replication. One tool with a corresponding angle is needed to process the groove. This method has poor flexibility and a long tool customization cycle.

[0003] Furthermore, the angles of the cutting tools manufactured during the process may have precision errors. These errors directly affect the machining accuracy of the grooves. Repeated re-sharpening and fine-tuning of the tool angles increases time and cost, requiring repeated adjustments on the machine, making it difficult to maintain consistent machining conditions. Moreover, the orientation of the tool during machining also affects the angle of the grooves. Tilting or tilting, or an uneven mounting surface, can all cause deviations in the angle of the cut grooves. Additionally, during the cutting process, both the left and right cutting edges of the tool tip cut simultaneously, causing chips to be squeezed out from both sides towards the center of the tool. This prevents the cutting area from cooling sufficiently, making it difficult to guarantee surface quality.

[0004] To address the above problems, a method for machining grooves with overlapping cutting tools at varying angles is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a method for machining grooves with overlapping cutting tools at varying angles, in order to solve the above-mentioned problems.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A method for machining grooves with overlapping cutting tools at varying angles includes the following steps: S1. Place two cutting tools overlapping each other on two coaxial controllable rotating shafts, and adjust the tips of both cutting tools to the center of the controllable rotating shafts, so that the tips of the two cutting tools are placed on the rotation axis of the controllable rotating shafts at different heights. S2. Then, align the tips of the two tools. First, install the lower tool and observe the tool's posture on the rotary table using the magnified view of the tool setting instrument. Use the tool setting instrument to monitor the tool tip position in real time. During the rotation of the lower tool, the tool tip is always located on the controllable rotation axis. S3. Then fix the tool and install the upper tool in the same way so that the tips of both tools rotate around the center of the controllable rotation axis. This will achieve the adjustment requirements and enable cutting. S4. During the cutting process, according to the required width of the groove, the rotation angle of the two tools is precisely controlled by the controllable rotating shaft. The cutting edge of the upper tool cuts one side of the groove, and the cutting edge of the lower tool cuts the other side of the groove. The two tools rotate around the axis to form various angles for cutting, thus forming a variable angle cutting mechanism. S5. After completing the groove machining in one position, move the workpiece or adjust the overall position of the tool to continue the overlapping and variable angle groove machining in other positions until all the required groove machining on the entire workpiece is completed.

[0007] As a preferred embodiment of the present invention, in step S1, the controllable rotating shaft includes a first turntable and a second turntable. The first turntable is circular and hollow, and the second turntable is cylindrical. The first turntable is horizontally mounted on the machine tool, and the second turntable is movably fitted inside the first turntable and rotatably connected to the first turntable.

[0008] In a preferred embodiment of the present invention, in step S4, the cutting mechanism includes a first arc-shaped vertical plate, a second arc-shaped vertical plate, and two mounting plates for mounting tools. The first arc-shaped vertical plate and the second arc-shaped vertical plate are respectively fixed on the first turntable and the second turntable. The two mounting plates are respectively fixed on the side of the outer wall of the first arc-shaped vertical plate and the second arc-shaped vertical plate facing the controllable rotation axis, and the two mounting plates are stacked vertically. The two tools are respectively mounted on the two mounting plates.

[0009] In a preferred embodiment of the present invention, the height of the first arc-shaped upright plate is greater than the height of the second arc-shaped upright plate, and the first arc-shaped upright plate and the second arc-shaped upright plate are adapted to each other.

[0010] In a preferred embodiment of the present invention, the cutting tool includes a handle and a tip. The handle is fixedly connected to a mounting plate, and the tip is fixedly disposed on the handle. Both the tip and the handle are oriented toward the axis of the controllable rotation shaft.

[0011] As a preferred embodiment of the present invention, the cutting tool is a single-crystal diamond cutting tool.

[0012] In a preferred embodiment of the present invention, the cutting edge of the blade tip is vertically arranged, and the centerline of the blade tip coincides with the centerline of the handle.

[0013] As a preferred embodiment of the present invention, the blade tip is set to an acute angle, and the acute angle is greater than 20 degrees and less than 90 degrees.

[0014] Compared with the prior art, the present invention has the following advantages: This invention, through the setting of a controllable rotating shaft and a cutting mechanism, combined with the overlapping use of two cutting tools, allows the two tools to rotate synchronously with the rotation of the controllable rotating shaft. The angle can be adjusted according to the required angle of the groove, realizing customized cutting of the groove angle. This improves the traditional method of requiring a custom-made cutting tool for a groove with a specific angle, increases the flexibility and accuracy of the cutting angle, and further improves processing efficiency and reduces processing costs, making the processing of complex grooves more efficient and precise. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a method for machining grooves with overlapping cutting tools at varying angles, provided by the present invention. Figure 2 This is a schematic diagram illustrating the working state of a method for machining grooves with overlapping cutting tools at varying angles, provided by the present invention. Figure 3 A schematic diagram of the tool state for a method of machining grooves with overlapping tools at varying angles provided by the present invention; Figure 4 This is a top view of the tool state in a method for machining grooves with overlapping tools at varying angles, as provided by the present invention.

[0017] The labels in the diagram represent the following: 1. Cutting tool; 11. Tool holder; 12. Tool tip; 2. Controllable rotating shaft; 21. First turntable; 22. Second turntable; 3. Cutting mechanism; 31. First arc-shaped vertical plate; 32. Second arc-shaped vertical plate; 33. Mounting plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1-4 As shown, the present invention provides a method for machining grooves with overlapping cutting tools at varying angles, comprising the following steps: S1. Place two cutting tools 1 overlapping each other on two coaxial controllable rotating shafts 2, and adjust the cutting tips 12 of both cutting tools 1 to the center of the controllable rotating shaft 2, so that the cutting tips 12 of the two cutting tools 1 are placed on the rotation axis of the controllable rotating shaft 2 with one higher and one lower. S2. Then, the tips 12 of the two tools 1 are aligned. First, the lower tool 1 is installed. The magnified view of the tool setting instrument is used to observe the posture of the tool 1 on the rotary table. The tool setting instrument is used to monitor the position of the tip 12 of the tool 1 in real time. During the rotation of the lower tool 1, the tip 12 is always located on the rotation axis of the controllable rotation axis 2. S3. Then fix the tool 1, and install the upper tool 1 in the same way so that the tips 12 of both tools 1 rotate around the center of the controllable rotation axis 2, thus achieving the adjustment requirements and enabling cutting. S4. During the cutting process, according to the required width of the groove, the rotation angle of the two tools 1 is precisely controlled by the controllable rotating shaft 2, so that the cutting edge of the upper tool 1 cuts one side of the groove, and the cutting edge of the lower tool 1 cuts the other side of the groove. The two tools 1 rotate around the axis to form various angles for cutting, forming a variable angle cutting mechanism 3. S5. After completing the groove machining at one position, move the workpiece or adjust the overall position of tool 1 to continue the overlapping and variable angle groove machining at other positions until all the required groove machining on the entire workpiece is completed.

[0020] Furthermore, after the groove is machined, stop the rotation of the controllable rotating shaft 2, carefully check the wear of the tool 1, and clean and maintain the tool 1 and the machining equipment for the next use. Perform quality inspection on the machined groove to check whether the surface flatness, angle accuracy and width of the groove meet the design requirements. If there are any non-compliance items, analyze the reasons and adjust the machining parameters before re-machining.

[0021] In step S1, the controllable rotating shaft 2 includes a first turntable 21 and a second turntable 22. The first turntable 21 is circular and hollow, and the second turntable 22 is cylindrical. The first turntable 21 is horizontally mounted on the machine tool, and the second turntable 22 is movably fitted inside the first turntable 21 and is rotatably connected to the first turntable 21.

[0022] The cooperation of the first turntable 21 and the second turntable 22 enables more flexible and precise rotational control of the two cutting tools 1. The circular hollow design of the first turntable 21 provides space for the installation and rotation of the second turntable 22, allowing it to rotate freely within the first turntable 21 without excessive interference. The cylindrical shape of the second turntable 22 ensures the stability of its own structure, enabling it to stably drive the cutting tool 1 to rotate when rotatably connected to the first turntable 21. This cooperation method allows the two cutting tools 1 to independently and precisely adjust their rotation angles according to the different angles and widths required for the grooves during machining, thereby meeting the machining needs of various complex grooves and greatly improving machining flexibility and accuracy.

[0023] In step S4, the cutting mechanism 3 includes a first arc-shaped vertical plate 31, a second arc-shaped vertical plate 32, and two mounting plates 33 for mounting the cutting tools 1. The first arc-shaped vertical plate 31 and the second arc-shaped vertical plate 32 are respectively fixed on the first turntable 21 and the second turntable 22. The two mounting plates 33 are respectively fixed on the side of the outer wall of the first arc-shaped vertical plate 31 and the second arc-shaped vertical plate 32 facing the controllable rotation axis 2, and the two mounting plates 33 are stacked vertically. The two cutting tools 1 are respectively mounted on the two mounting plates 33.

[0024] The cutting mechanism 3 enables flexible spatial arrangement and precise positioning of the cutting tool 1. The first arc-shaped vertical plate 31 and the second arc-shaped vertical plate 32 are fixed to the first turntable 21 and the second turntable 22, respectively. This design allows the mounting plate 33 to rotate synchronously with the controllable rotating shaft 2, thereby driving the cutting tool 1 mounted on it to adjust its angle accordingly. The two mounting plates 33 are stacked vertically, allowing the two cutting tools 1 to cooperate during machining, enabling a wide range of angle adjustments and customized cutting of the groove angle. This improves upon the traditional method of requiring a custom-made cutting tool 1 for a single groove angle, increasing the flexibility and accuracy of the cutting angle, improving machining efficiency, and reducing machining costs, making the machining of complex grooves more efficient and precise.

[0025] Because the two diamond tools 1 overlap vertically, the chip flow space on the left and right sidewalls of the groove does not overlap, the chip flow is smoother, and the chip heat is more easily carried away by the cooling system, thereby improving the cutting environment and enhancing the cutting quality.

[0026] Furthermore, the height of the first arc-shaped upright plate 31 is greater than the height of the second arc-shaped upright plate 32, and the first arc-shaped upright plate 31 and the second arc-shaped upright plate 32 are compatible.

[0027] The first arc-shaped vertical plate 31 is higher than the second arc-shaped vertical plate 32, and the two are matched. This design, on the one hand, avoids interference between the two vertical plates 33 when they are stacked vertically, ensuring the stability of the mounting plates 33 and the tool 1. On the other hand, the arc-shaped vertical plates of different heights can better meet the adjustment requirements of the angle and position of the tool 1 when machining grooves of different shapes and sizes. In actual machining, for some grooves with special angle change requirements, the tool 1 on the higher first arc-shaped vertical plate 31 can perform preliminary cutting first, and then the tool 1 on the lower second arc-shaped vertical plate 32 can perform fine cutting according to the shape and size of the remaining part of the groove. The two work together to make the machined groove more accurate and of better quality. Moreover, this matching height design also facilitates the overall installation and debugging of the cutting mechanism 3, improving the operability and practicality of the entire machining method.

[0028] The cutting tool 1 includes a handle 11 and a tip 12. The handle 11 is fixedly connected to the mounting plate 33, and the tip 12 is fixedly mounted on the handle 11. Both the tip 12 and the handle 11 are oriented towards the axis of the controllable rotation shaft 2.

[0029] The tool holder 11 and the mounting plate 33 can be fixedly connected by bolts, allowing for quick removal or installation of the tool holder 11 from the mounting plate 33 when the tool 1 needs to be replaced or the cutting mechanism 3 needs maintenance. Simultaneously, the tool tip 12 is fixedly mounted on the tool holder 11, with both facing the axis of the controllable rotation shaft 2. This ensures that during tool 1 rotation adjustment or cutting, the tool tip 12 can always machine the groove at an accurate angle and position, contributing to the consistency and quality of groove machining. Furthermore, this design makes the movement trajectory of the tool tip 12 more consistent with the requirements of groove machining when the tool 1 rotates with the controllable rotation shaft 2, better adapting to the machining needs of grooves of different shapes and sizes, and improving machining flexibility and adaptability.

[0030] The cutting tool 1 is a single-crystal diamond cutting tool. The single-crystal diamond cutting tool 1 possesses extremely high hardness and wear resistance, maintaining the sharpness of the cutting tip 12 during grooving and effectively reducing the impact of tool wear on machining accuracy. Simultaneously, the excellent thermal conductivity of single-crystal diamond material allows for rapid heat dissipation during machining, reducing the risk of deformation of the cutting tip 12 due to overheating, further ensuring the dimensional accuracy and surface quality of the grooved machining. Moreover, the crystal orientation characteristics of the single-crystal diamond cutting tool 1 result in more stable cutting performance of the cutting tip 12 during cutting, maintaining good machining results under various cutting conditions and meeting the stringent performance requirements of the cutting tool 1 for overlapping variable-angle grooving.

[0031] The tip of the cutting tool 12 is vertically positioned, and its centerline coincides with the centerline of the tool holder 11. This ensures that the cutting tool 12 experiences more uniform force during cutting, preventing offset or vibration caused by uneven force distribution, thus guaranteeing the stability and accuracy of groove machining. Simultaneously, the alignment of the cutting tool 12 with the centerline of the tool holder 11 simplifies the installation and adjustment process of the tool 1, improving machining efficiency. In practical applications, this vertically positioned cutting tool 12 structure with its aligned centerline better adapts to the machining requirements of overlapping variable-angle grooves, ensuring that the dimensions and shape of the grooves meet design requirements.

[0032] The cutting tip 12 is set with an acute angle, greater than 20 degrees and less than 90 degrees. This acute angle setting ensures better material entry during overlapping, variable-angle groove machining with the cutting tool 1, improving machining accuracy and efficiency. Simultaneously, this angle range avoids the problems of insufficient strength and easy wear of the cutting tip 12 due to an excessively small angle, while preventing the angle from affecting the cutting performance and groove quality due to an excessively large angle. This helps extend the service life of the cutting tool 1 and reduce machining costs.

[0033] The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A method of tool overlap angle grooving, characterized by, The method comprises the following steps: S1, two knives (1) are placed on two coaxial controllable rotating shafts (2) in an up-down overlapping manner, the knife tips (12) of the two knives (1) are all adjusted to the center of the controllable rotating shaft (2), and the knife tips (12) of the two knives (1) are placed on the rotation axis of the controllable rotating shaft (2) with one high and one low; S2, then the knife tips (12) of the two knives (1) are aligned, the lower knife (1) is installed first, the posture of the knife (1) on the rotary table is observed by using the enlarged field of view of the tool setting gauge, and the position of the knife tip (12) of the knife (1) is monitored in real time by using the tool setting gauge, during the rotation of the lower knife (1), the knife tip (12) is always located on the rotation axis of the controllable rotating shaft (2); S3, then the knife (1) is fixed, and the upper knife (1) is installed in the same way, so that the knife tips (12) of the two knives (1) rotate around the center of the controllable rotating shaft (2), then the adjustment requirement is met, and cutting can be performed; S4, during cutting, the rotation angle of the two knives (1) is accurately controlled through the controllable rotating shaft (2) according to the width requirement of the required groove, so that one side of the upper knife (1) cuts one side of the groove, and the opposite side of the lower knife (1) cuts the other side of the groove, the two knives (1) rotate around the axis to form a variable-angle cutting mechanism (3); S5, after the groove machining at one position is completed, the workpiece is moved or the overall position of the knife (1) is adjusted, and the overlapping variable-angle groove machining at other positions is continued until all the required groove machining on the entire workpiece is completed.

2. A method of tool overlap angle grooving according to claim 1 wherein: In step S1, the controllable rotating shaft (2) comprises a first rotary table (21) and a second rotary table (22), the first rotary table (21) is in a hollow circular shape, the second rotary table (22) is in a cylindrical shape, the first rotary table (21) is horizontally arranged on a machine tool, and the second rotary table (22) is movably sleeved in the first rotary table (21) and rotationally connected with the first rotary table (21).

3. A method of tool overlap angle grooving according to claim 2, wherein: In step S4, the cutting mechanism (3) comprises a first arc-shaped vertical plate (31), a second arc-shaped vertical plate (32) and two mounting plates (33) for mounting the knives (1), the first arc-shaped vertical plate (31) and the second arc-shaped vertical plate (32) are fixed on the first rotary table (21) and the second rotary table (22) respectively, the two mounting plates (33) are fixedly arranged on one side of the outer walls of the first arc-shaped vertical plate (31) and the second arc-shaped vertical plate (32) and face the controllable rotating shaft (2), and the two mounting plates (33) are arranged in an up-down overlapping manner, and the two knives (1) are mounted on the two mounting plates (33) respectively.

4. A method of tool overlap angle grooving according to claim 3 wherein: The height of the first arc-shaped vertical plate (31) is greater than the height of the second arc-shaped vertical plate (32), and the first arc-shaped vertical plate (31) and the second arc-shaped vertical plate (32) are matched.

5. The method of claim 1 wherein: The tool (1) comprises a tool handle (11) and a tool tip (12), the tool handle (11) is fixedly connected with a mounting plate (33), the tool tip (12) is fixedly arranged on the tool handle (11), and the tool tip (12) and the tool handle (11) are both towards an axis of the controllable rotating shaft (2).

6. The method of gang angle slotting of a tool according to claim 1, wherein: The tool (1) is a single crystal diamond tool (1).

7. A method of tool overlap angle grooving according to claim 5 wherein: A tip end of the tool tip (12) is vertically arranged, and a middle line of the tool tip (12) coincides with a middle line of the tool handle (11).

8. The method of claim 5 wherein: The tool tip (12) is arranged as an acute angle, and the acute angle is greater than 20 degrees and less than 90 degrees.

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