Double-edge boring cutter and application method thereof

Abstract

The double-edge boring cutter comprises a cutter handle, one end of the cutter handle is provided with a machine tool standard taper shank connector, the other end of the cutter handle is fixedly connected with a cutter bar, the other end of the cutter bar is fixedly connected with a cutter head, the side face of the other end of the cutter head is oppositely provided with a horizontal square hole I and a horizontal square hole II which are parallel to each other, a boring cutter I is arranged in the horizontal square hole I, and boring cutters II are arranged in the horizontal square hole II. An adjusting gasket I is arranged on the side face of the boring cutter I in the horizontal square hole I. An adjusting gasket II is arranged on the side face of the boring cutter II in the horizontal square hole II. The invention further discloses an application method of the double-edge boring cutter. According to the double-edge boring cutter and the application method thereof, the problems of long machining period, low efficiency and high machining cost when the arc surface of the hook body of a large hook is machined in the prior art are solved.

Description

Technical Field

[0001] This invention belongs to the field of mechanical manufacturing technology, specifically relating to double-edged boring tools and methods for applying double-edged boring tools. Background Technology

[0002] The large hook is a crucial piece of equipment in oil drilling rigs, primarily used for lifting and lowering drilling tubing. It is heavy and structurally complex. During the manufacturing process, to eliminate surface defects, reduce weight, and ensure product quality, the curved surfaces of the hook body need to be machined. Currently, the curved surfaces of the hook body are machined using a single-edged boring tool. This method suffers from long machining cycles, low efficiency, and high costs. Summary of the Invention

[0003] The purpose of this invention is to provide a double-edged boring tool that solves the problems of long processing cycle, low efficiency and high processing cost when machining the arc surface of a large hook body using existing technology.

[0004] Another object of the present invention is to provide a method for applying a double-edged boring tool.

[0005] The technical solution adopted in this invention is a double-edged boring tool, including a tool holder, a standard machine tool taper shank interface at one end of the tool holder, a tool bar fixedly connected to the other end of the tool holder, a tool head fixedly connected to the other end of the tool bar, and parallel horizontal square holes I and II on the other side of the other end of the tool head. A boring tool I is provided in horizontal square hole I, and a boring tool II is provided in horizontal square hole II. An adjusting shim I is provided on the side of the boring tool I in horizontal square hole I, and an adjusting shim II is provided on the side of the boring tool II in horizontal square hole II.

[0006] The invention is further characterized by: The tool holder has a threaded hole in the middle of one end near the tool bar, and the tool holder is fixed to the tool bar at the threaded hole.

[0007] The tool holder has a cylindrical structure, and external threaded bodies are fixed to the center of both ends of the tool holder. The external threaded body at the end of the tool holder near the tool handle is fixed to the tool handle in the threaded hole of the tool holder.

[0008] The cutter head has a threaded hole at the center of one end near the cutter shank, and the external threaded body of the cutter shank at one end near the cutter head is fixedly connected to the cutter head in the threaded hole.

[0009] Horizontal square hole I and horizontal square hole II are symmetrical about the cutting head at a central angle of 180°. Boring tool I and boring tool II are symmetrical about the cutting head at a central angle of 180°.

[0010] The side of the cutting head has several threaded holes I horizontally opened at positions corresponding to the horizontal square holes I and II, and each of the threaded holes I has a screw I installed in it. The end face of the cutting head has several threaded holes II vertically opened at positions corresponding to the horizontal square holes I and II, and each of the threaded holes II has a screw II installed in it. The screws I and the screws II together fix the boring tool I and the boring tool II.

[0011] Adjusting shims I and II are positioned away from the nut ends of several screws I. Adjusting shims I and II are symmetrical about the cutting head at a 180° angle. One side of boring tool I contacts several screws I, and the other side of boring tool I contacts adjusting shims I. One side of boring tool II contacts several screws I, and the other side of boring tool II contacts adjusting shims II.

[0012] Another technical solution adopted in this invention is a method for applying a double-edged boring tool to machine the arc surface of a large hook body, comprising the following steps: S1. The tool holder, tool shank, and tool head are connected by threads to form a whole; S2. Measure the working dimension R of the large hook body's arc surface; S3. Install boring tools I and II into horizontal square holes I and II respectively using screws I, screws II, adjusting shims I and II; S4. Adjust the distance between the tool tips of boring tool I and boring tool II to 2R to form a double-edged boring tool. Connect the double-edged boring tool to the standard taper shank of the machine tool. S5. Place the large hook body on the boring machine worktable and use a double-edged boring tool to complete the boring of the arc surface.

[0013] Another feature of the technical solution of this invention is that: The specific process of S5 is as follows: place the large hook body on the boring machine worktable, move the rotation center of the double-edged boring tool to the center position of the arc surface, and drive the double-edged boring tool to rotate. The rotation radius of the double-edged boring tool is R, and the rotation direction is clockwise to complete the boring of the arc surface.

[0014] The beneficial effects of this invention are: The double-edged boring bar and its application method provided by this invention are simple to operate, easy to install, and have a large cutting force. The two cutting edges of the double-edged boring bar participate in cutting alternately, resulting in a long tool life and high processing efficiency. The two cutting edges of the double-edged boring bar are symmetrically arranged, ensuring stable operation and good overall integrity. This invention solves the problems of long processing cycle, low efficiency, and high processing cost when machining the arc surface of a large hook body in the prior art. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the double-edged boring tool of the present invention; Figure 2 This is a cross-sectional view (AA) of the present invention; Figure 3 This is a schematic diagram of the working state of the double-edged boring tool of the present invention.

[0016] In the diagram, 1. handle, 2. shank, 3. cutter head, 4. screw I, 5. screw II, 6. boring tool I, 7. boring tool II, 8. adjusting shim I, 9. hook body, 10. horizontal square hole I, 11. horizontal square hole II, 12. adjusting shim II. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] The double-edged boring tool provided by this invention, such as Figure 1 As shown, the tool includes a tool holder 1, one end of which has a standard taper shank interface for machine tools. A tool shank 2 is fixedly connected to the other end of the tool holder 1. The tool shank 2 can be manufactured to the required length according to actual needs. A tool head 3 is fixedly connected to the other end of the tool shank 2. Figure 2As shown, the other side of the cutter head 3 has parallel horizontal square holes I10 and II11 facing each other. A boring bar I6 is installed in horizontal square hole I10, and a boring bar II7 is installed in each of the horizontal square holes II11. The cutting bodies of boring bars I6 and II7 are square in shape, and their dimensions are slightly smaller than those of horizontal square holes I10 and II11. An adjusting shim I8 is installed on the side of boring bar I6 in horizontal square hole I10, and an adjusting shim II12 is installed on the side of boring bar II7 in horizontal square hole II11. Both adjusting shims I8 and II12 are rectangular in shape. Ensure that the tips of boring tools I6 and II7 are aligned on the same plane; a threaded hole is provided at the center of the end of the tool holder 1 near the tool shank 2, and the tool holder 1 is fixedly connected to the tool shank 2 at the threaded hole; the tool shank 2 has a cylindrical structure, and external threaded bodies are fixedly connected to the center of both ends of the tool shank 2, with the external threaded body at the end of the tool shank 2 near the tool holder 1 fixedly connected to the tool holder 1 in the threaded hole; a threaded hole is provided at the center of the end of the tool head 3 near the tool shank 2, and the external threaded body at the end of the tool shank 2 near the tool head 3 is fixedly connected to the tool head 3 in the threaded hole; horizontal square holes I10 and II11 are connected to the tool head 3. The boring bar I6 and boring bar II7 are 180° centrally symmetrical about the cutter head 3. Both boring bar I6 and boring bar II7 have the same radius of rotation, i.e., boring radius. Their function is to achieve alternating continuous boring with both boring bar I6 and boring bar II7 when the tool rotates one revolution, reducing tool idle time and thus improving the machining efficiency of inner arc surfaces. Several threaded holes I are horizontally opened on the side of the cutter head 3 at positions corresponding to the horizontal square holes I10 and II11. Each threaded hole I contains a screw I4. The end face of the cutter head 3 is aligned with the horizontal square holes I10 and II11. Several threaded holes II are vertically opened at corresponding positions, and screws II5 are installed in each of the threaded holes II. Several screws I4 and several screws II5 together fix boring tools I6 and II7. Adjusting shims I8 and II12 are set away from the nut ends of the screws I4. Adjusting shims I8 and II12 are symmetrical about the tool head 3 at 180°. One side of boring tool I6 is in contact with several screws I4, and the other side of boring tool I6 is in contact with adjusting shims I8. One side of boring tool II7 is in contact with several screws I4, and the other side of boring tool II7 is in contact with adjusting shims II12.

[0019] Example 1 The double-edged boring tool proposed in this embodiment, such as Figure 1 As shown, the tool includes a tool holder 1, one end of which has a standard machine tool taper shank interface, and the other end of the tool holder 1 is fixedly connected to a tool shank 2, the other end of which is fixedly connected to a tool head 3, as shown. Figure 2As shown, the other side of the cutter head 3 has parallel horizontal square holes I10 and II11 facing each other. A boring tool I6 is provided in the horizontal square hole I10, and a boring tool II7 is provided in each of the horizontal square holes II11. An adjusting shim I8 is provided on the side of the boring tool I6 in the horizontal square hole I10, and an adjusting shim II12 is provided on the side of the boring tool II7 in the horizontal square hole II11.

[0020] Example 2 The double-edged boring tool proposed in this embodiment, such as Figure 1 As shown, the tool includes a tool holder 1, one end of which has a standard machine tool taper shank interface, and the other end of the tool holder 1 is fixedly connected to a tool shank 2, the other end of which is fixedly connected to a tool head 3, as shown. Figure 2 As shown, the other side of the cutter head 3 has parallel horizontal square holes I10 and II11 facing each other. A boring tool I6 is installed in the horizontal square hole I10, and a boring tool II7 is installed in the horizontal square hole II11. An adjusting shim I8 is installed on the side of the boring tool I6 in the horizontal square hole I10, and an adjusting shim II12 is installed on the side of the boring tool II7 in the horizontal square hole II11. A tool shank threaded hole is opened in the middle of the end of the tool holder 1 near the tool bar 2. The tool holder 1 is fixed to the tool bar 2 at the tool bar threaded hole. The tool bar 2 has a cylindrical structure. External threaded bodies are fixed to the center of both ends of the tool bar 2. The external threaded body of the tool bar 2 near the end of the tool holder 1 is fixed to the tool holder 1 in the tool bar threaded hole.

[0021] Example 3 The double-edged boring tool proposed in this embodiment, such as Figure 1 As shown, the tool includes a tool holder 1, one end of which has a standard machine tool taper shank interface, and the other end of the tool holder 1 is fixedly connected to a tool shank 2, the other end of which is fixedly connected to a tool head 3, as shown. Figure 2 As shown, the other side of the cutter head 3 has parallel horizontal square holes I10 and II11 facing each other. A boring bar I6 is installed in horizontal square hole I10, and a boring bar II7 is installed in each of the horizontal square holes II11. An adjusting shim I8 is installed on the side of the boring bar I6 in horizontal square hole I10, and an adjusting shim II12 is installed on the side of the boring bar II7 in horizontal square hole II11. A threaded hole for the tool holder 1 is located in the middle of the end near the tool bar 2, and the tool holder 1 is fixedly connected to the tool bar 2 at the threaded hole. The tool bar 2... It has a cylindrical structure. Both ends of the tool holder 2 are fixed with external threaded bodies. The external threaded body of the tool holder 2 near the tool shank 1 is fixed to the tool shank 1 in the tool holder threaded hole. The tool head 3 has a tool head threaded hole at the center of the end near the tool holder 2. The external threaded body of the tool holder 2 near the tool head 3 is fixed to the tool head 3 in the tool head threaded hole. Horizontal square hole I 10 and horizontal square hole II 11 are 180° symmetrical about the tool head 3. Boring tool I 6 and boring tool II 7 are 180° symmetrical about the tool head 3.

[0022] Example 4 The double-edged boring tool proposed in this embodiment, such as Figure 1As shown, the tool includes a tool holder 1, one end of which has a standard machine tool taper shank interface, and the other end of the tool holder 1 is fixedly connected to a tool shank 2, the other end of which is fixedly connected to a tool head 3, as shown. Figure 2 As shown, the other side of the cutter head 3 has parallel horizontal square holes I10 and II11 facing each other. A boring bar I6 is installed in horizontal square hole I10, and a boring bar II7 is installed in both horizontal square holes II11. An adjusting shim I8 is installed on the side of the boring bar I6 in horizontal square hole I10, and an adjusting shim II12 is installed on the side of the boring bar II7 in horizontal square hole II11. A threaded hole is opened in the middle of the end of the cutter shank 1 near the cutter bar 2, and the cutter shank 1 is fixedly connected to the cutter bar 2 at the threaded hole. The cutter bar 2 has a cylindrical structure, and external threaded bodies are fixedly connected to the centers of both ends of the cutter bar 2. The external threaded body at the end of the cutter bar 2 near the cutter shank 1 is fixedly connected to the cutter shank 1 in the threaded hole. A cutter head is opened in the center of the end of the cutter head 3 near the cutter bar 2. The threaded hole is located in the tool head 3. The external threaded body of the tool holder 2 near the tool head 3 is fixed to the tool head 3 in the threaded hole. The horizontal square hole I10 and the horizontal square hole II11 are symmetrical about the tool head 3 at 180°. The boring tool I6 and the boring tool II7 are symmetrical about the tool head 3 at 180°. Several threaded holes I are horizontally opened on the side of the tool head 3 at the corresponding positions of the horizontal square hole I10 and the horizontal square hole II11. Each of the threaded holes I is equipped with a screw I4. Several threaded holes II are vertically opened on the end face of the tool head 3 at the corresponding positions of the horizontal square hole I10 and the horizontal square hole II11. Each of the threaded holes II is equipped with a screw II5. The screws I4 and the screws II5 together fix the boring tool I6 and the boring tool II7.

[0023] Example 5 The double-edged boring tool proposed in this embodiment, such as Figure 1 As shown, the tool includes a tool holder 1, one end of which has a standard machine tool taper shank interface, and the other end of the tool holder 1 is fixedly connected to a tool shank 2, the other end of which is fixedly connected to a tool head 3, as shown. Figure 2As shown, the other side of the cutter head 3 has parallel horizontal square holes I10 and II11 facing each other. A boring bar I6 is installed in horizontal square hole I10, and a boring bar II7 is installed in each of the horizontal square holes II11. An adjusting shim I8 is installed on the side of the boring bar I6 in horizontal square hole I10, and an adjusting shim II12 is installed on the side of the boring bar II7 in horizontal square hole II11. A threaded hole for the tool shank 1 is located in the middle of the end of the tool shank 2 near the tool holder 2. The tool shank 1 has a threaded hole in the tool shank threaded hole. The hole is fixedly connected to the tool holder 2; the tool holder 2 has a cylindrical structure, and external threaded bodies are fixedly connected to the center of both ends of the tool holder 2. The external threaded body of the tool holder 2 near the tool shank 1 is fixedly connected to the tool shank 1 in the threaded hole of the tool holder 1; the tool head 3 has a tool head threaded hole at the center of the end near the tool holder 2, and the external threaded body of the tool holder 2 near the tool head 3 is fixedly connected to the tool head 3 in the tool head threaded hole; the horizontal square hole I10 and the horizontal square hole II11 are symmetrical about the tool head 3 at 180° center, and the boring tool I6 and the boring tool II7 are symmetrical about the tool head 3 at 180° center; the side of the tool head 3 has several threaded holes I horizontally opened at the corresponding positions of the horizontal square hole I10 and the horizontal square hole II11, and each of the several threaded holes I is equipped with a screw I4; the end face of the tool head 3 has several threaded holes II vertically opened at the corresponding positions of the horizontal square hole I10 and the horizontal square hole II11, and each of the several threaded holes II is equipped with a screw II5, and the several screws I4 and several Screws II5 together fix boring tools I6 and II7; adjusting shims I8 and II12 are set away from the nut ends of several screws I4, and adjusting shims I8 and II12 are symmetrical about the tool head 3 at 180°. One side of boring tool I6 is in contact with several screws I4, and the other side of boring tool I6 is in contact with adjusting shim I8. One side of boring tool II7 is in contact with several screws I4, and the other side of boring tool II7 is in contact with adjusting shim II12.

[0024] Example 6 The application method of the double-edged boring tool proposed in this embodiment is used to machine the arc surface of a large hook body, and includes the following steps: S1, the tool holder 1, the tool shank 2 and the tool head 3 are connected by threads to form a whole; S2. Measure the working dimension R of the 9-circular arc surface of the large hook body; S3. Install boring tools I6 and II7 into horizontal square holes I10 and II11 respectively using screws I4, II5, adjusting shims I8 and II12; S4. Adjust the distance between the tool tips of boring tool I6 and boring tool II7 to 2R to form a double-edged boring tool. Connect the double-edged boring tool to the standard taper shank of the machine tool. S5. Place the large hook body 9 on the boring machine worktable and use a double-edged boring tool to complete the boring of the arc surface.

[0025] Example 7 The application method of the double-edged boring tool proposed in this embodiment is used to machine the arc surface of a large hook body, and includes the following steps: S1, tool holder 1, tool shank 2 and tool head 3 are connected by threads to form a whole; used to transmit the rotational torque of the machine tool spindle to boring tool I 6 and boring tool II 7; S2. Measure the working dimension R of the 9-circular arc surface of the large hook body; S3. Install boring tools I6 and II7 into horizontal square holes I10 and II11 respectively using screws I4, II5, adjusting shims I8 and II12. S4. Adjust the distance between the tool tips of boring tool I6 and boring tool II7 to 2R to form a double-edged boring tool. Connect the double-edged boring tool to the standard taper shank of the machine tool. S5. Place the large hook body 9 on the boring machine worktable, remove the excess material between dimensions R1 and R of the large hook body 9, and complete the boring process of the arc surface. The specific process is as follows: place the large hook body 9 on the boring machine worktable, move the rotation center of the double-edged boring tool to the center position of the arc surface, and drive the double-edged boring tool to rotate. The rotation radius of the double-edged boring tool is R, and the rotation direction is clockwise to complete the boring of the arc surface. During one revolution of the cutting tool, when the boring tool I6, as... Figure 3 As shown, when the tool rotates to point A to begin boring the hook body 9, boring tool II7 does not bore and only rotates idly. When boring tool I6 completes boring and leaves the workpiece at point B, boring tool II7 rotates to point A and begins boring. At this time, boring tool I6 does not bore and only rotates idly. For each revolution of the tool, boring tool I6 and boring tool II7 each complete one boring operation. As the tool rotates continuously, boring tool I6 and boring tool II7 alternately cycle through boring operations. With the axial feed motion of the spindle, the machining of the arc surface of the hook body 9 is finally completed. When the machining allowance of the arc surface of the hook body 9 is large, the tool rotation center can be moved horizontally to the right of the center of the arc surface of the hook body 9 by operating the boring machine, and the first boring operation can be completed. Then the tool can be moved to the left to perform the second boring operation. Repeat the above operation until the machining of the entire inner arc surface of the part is completed.

Claims

1. A double-edged boring tool, characterized in that, Includes a tool holder (1), one end of which has a machine tool standard tapered shank interface, the other end of which is fixedly connected to a tool bar (2), the other end of which is fixedly connected to a tool head (3), the other end of which has parallel horizontal square holes I (10) and II (11) on its side, the horizontal square hole I (10) is provided with a boring tool I (6), the horizontal square hole II (11) is provided with a boring tool II (7), the horizontal square hole I (10) is provided with an adjusting shim I (8) on the side of the boring tool I (6), and the horizontal square hole II (11) is provided with an adjusting shim II (12) on the side of the boring tool II (7).

2. The double-edged boring tool according to claim 1, characterized in that, The handle (1) has a threaded hole at the middle of one end near the tool bar (2), and the handle (1) is fixedly connected to the tool bar (2) at the threaded hole.

3. The double-edged boring tool according to claim 2, characterized in that, The tool holder (2) has a cylindrical structure. Both ends of the tool holder (2) are fixed with external threaded bodies. The external threaded body of the tool holder (2) near the end of the tool handle (1) is fixed to the tool handle (1) in the threaded hole of the tool holder (2).

4. The double-edged boring tool according to claim 3, characterized in that, The cutter head (3) has a threaded hole at the center of one end near the cutter bar (2), and the external thread of the cutter bar (2) near the cutter head (3) is fixedly connected to the cutter head (3) in the threaded hole.

5. The double-edged boring tool according to claim 4, characterized in that, The horizontal square hole I (10) and the horizontal square hole II (11) are 180° symmetrical about the cutting head (3), and the boring tool I (6) and the boring tool II (7) are 180° symmetrical about the cutting head (3).

6. The double-edged boring tool according to claim 5, characterized in that, The side of the cutting head (3) is provided with several threaded holes I at the corresponding positions of the horizontal square hole I (10) and the horizontal square hole II (11). Each of the several threaded holes I is provided with screw I (4). The end face of the cutting head (3) is provided with several threaded holes II at the corresponding positions of the horizontal square hole I (10) and the horizontal square hole II (11). Each of the several threaded holes II is provided with screw II (5). The several screws I (4) and the several screws II (5) together fix the boring tool I (6) and the boring tool II (7).

7. The double-edged boring tool according to claim 6, characterized in that, The adjusting shims I (8) and II (12) are positioned away from the nut ends of the screws I (4). The adjusting shims I (8) and II (12) are symmetrical about the cutting head (3) at a central angle of 180°. One side of the boring bar I (6) is in contact with the screws I (4), and the other side of the boring bar I (6) is in contact with the adjusting shims I (8). One side of the boring bar II (7) is in contact with the screws I (4), and the other side of the boring bar II (7) is in contact with the adjusting shims II (12).

8. The application method of a double-edged boring tool, characterized in that, Using the double-edged boring tool as described in claim 7 to machine the arc surface of a large hook body includes the following steps: S1, the tool holder (1), the tool shank (2) and the tool head (3) are connected by threads to form a whole; S2. Measure the working dimension R of the arc surface of the large hook body (9); S3. Install boring tool I (6) and boring tool II (7) into horizontal square hole I (10) and horizontal square hole II (11) respectively through screw I (4), screw II (5), adjusting shim I (8) and adjusting shim II (12); S4. Adjust the distance between the tips of boring tool I (6) and boring tool II (7) to 2R to form a double-edged boring tool. Connect the double-edged boring tool to the standard taper shank of the machine tool. S5. Place the large hook body (9) on the boring machine worktable and use a double-edged boring tool to complete the boring of the arc surface.

9. The application method of the double-edged boring tool according to claim 8, characterized in that, The specific process of S5 is as follows: place the large hook body (9) on the boring machine worktable, move the rotation center of the double-edged boring tool to the center position of the arc surface, and drive the double-edged boring tool to rotate. The rotation radius of the double-edged boring tool is R, and the rotation direction is clockwise to complete the boring of the arc surface.

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