A method for butting a long-axis eccentric deep hole with an inclined hole

Abstract

The present invention discloses a method for docking a long-axis eccentric deep hole with an inclined hole, which belongs to the field of mechanical processing. The method comprises the following steps: S1: using a plane processing device to process four planes in a circular array on the outside of a tube body and at the intersection of a first hole and a second hole, respectively named as the first plane, the second plane, the third plane and the fourth plane, and measuring the distances A1, B1, C1 and D1 from the first plane, the second plane, the third plane and the fourth plane to the axis of the tube body; S2: using an ultrasonic thickness gauge to measure the minimum value of the distance between the inner wall of the first hole and the four planes in four directions of the first plane, the second plane, the third plane and the fourth plane; it can achieve the precise measurement of the position of the center of the end of the first hole, and adjust the angle α of the second hole according to the position of the center of the end of the first hole, thereby reducing the boss phenomenon.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing, and more particularly to a method for butting a long-axis eccentric deep hole with an inclined hole. Background Art

[0002] The butt connection between the long axis eccentric deep hole and the inclined hole is a machining method in machining, which specifically involves machining a deep hole and an inclined hole on the pipe body and connecting the deep hole and the inclined hole.

[0003] In some machining situations, due to the long length of the tube body, it is difficult to control the offset of the hole end when machining the depth. Especially when the ratio of the deep hole depth to the inclined hole diameter is greater than 100, the end of the hole will have a large offset, resulting in a large boss at the joint when the end of the machined inclined hole is docked with the depth. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a method for docking a long-axis eccentric deep hole with an inclined hole, which can accurately measure the position of the center of the end of the first hole and adjust the angle α of the second hole according to the position of the center of the end of the first hole to reduce the boss phenomenon.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A method for butting a long-axis eccentric deep hole with an inclined hole comprises the following steps:

[0009] S1: Use a plane machining device to machine four planes in a circular array on the outside of the tube body at the intersection of the first hole and the second hole, and name them as the first plane, the second plane, the third plane and the fourth plane, and measure the distances A1, B1, C1 and D1 from the first plane, the second plane, the third plane and the fourth plane to the axis of the tube body;

[0010] S2: Use an ultrasonic thickness gauge to measure the minimum values ​​A2, B2, C2, and D2 of the distances between the inner wall of the first hole and the first plane, the second plane, the third plane, and the fourth plane in four directions;

[0011] S3: Calculate the position of the center of the end of the first hole based on the measurement results of S1 and S2;

[0012] S4: adjusting the angle α of the second hole according to the position of the center of the end of the first hole until the end of the second hole coincides with the center of the end of the first hole.

[0013] Furthermore, the calculation formula for the center of the end of the first hole (7) in S3 is:

[0014]

[0015] Furthermore, the plane processing equipment includes a self-positioning bracket (1), and four workstations are provided on the self-positioning bracket (1). The four workstations are respectively adapted to the first plane (91), the second plane (92), the third plane (93), and the fourth plane (94). The outer side of the self-positioning bracket (1) is equipped with a rotating frame (3), the rotating frame (3) is equipped with a guide unit (2), the guide unit (2) is equipped with a centrifugal guide frame (4), and the centrifugal guide frame (4) is equipped with a cutting device (5).

[0016] Furthermore, the self-positioning bracket (1) includes a main ring body (11), and at least three guide rings (12) in a ring array are provided on the main ring body (11), and the guide ring (12) is slidably connected to a support rod (13) inside the main ring body (11), and one end of the support rod (13) located inside the main ring body (11) is fixedly connected to a connecting claw (14), and the outside of the main ring body (11) is equipped with an adjustment unit connected to one end of the plurality of support rods (13) located outside the main ring body (11).

[0017] Furthermore, the adjustment unit includes an annular rotating plate (16) and a plurality of conductive round rods (15), the annular rotating plate (16) is rotatably connected to the outside of the self-positioning bracket (1), and a spiral groove (17) is provided on the annular rotating plate (16), the plurality of conductive round rods (15) are respectively fixedly connected to a plurality of support rods (13), the conductive round rods (15) are slidably connected to the inside of the spiral groove (17), and the main ring body (11) is also provided with a locking piece (18) adapted to the annular rotating plate (16).

[0018] Furthermore, the rotating frame (3) includes an annular ring (31) and four locking ears (32), the four locking ears (32) are fixedly connected to the circumference of the main ring body (11) in an annular array, the annular ring (31) is rotatably connected to the outside of the main ring body (11), the guide unit (2) is fixedly connected to the annular ring (31), and the outside of the annular ring (31) is fixedly connected with a connecting side ear (36), and a connecting piece is provided between the locking ear (32) and the connecting side ear (36) for connecting and locking the locking ear (32) and the connecting side ear (36).

[0019] Furthermore, the connecting piece includes a screw nail (34) threadedly connected to the connecting side ear (36), and the end of the screw nail (34) close to the locking ear (32) is equipped with a frustum-shaped frustum locking portion (35), and the locking ear (32) is provided with a locking hole (33), and the diameter of the frustum locking portion (35) close to the locking ear (32) is smaller than the diameter of the locking hole (33), and the diameter of the frustum locking portion (35) away from the locking ear (32) is larger than the diameter of the locking hole (33).

[0020] Furthermore, the guide unit (2) includes a guide frame (22) fixedly connected to the outside of the annular ring (31), the guide frame (22) is internally slidably connected to a slide frame (23) fixedly connected to the centrifugal guide frame (4), and a limiting component is also provided on the guide frame (22), the limiting component includes a threaded rod (26) fixedly connected to the inside of the guide frame (22), and the threaded rod (26) is threadedly connected to a limiting member (21) located on the side of the slide frame (23) close to the annular ring (31).

[0021] Furthermore, a spring limiting rod (24) is fixedly connected to the interior of the guide frame (22), the slide (23) is slidably connected to the outside of the spring limiting rod (24), and a return spring (25) is sleeved on the outside of the spring limiting rod (24) and located between the slide (23) and the inner wall of the guide frame (22) close to the annular ring (31).

[0022] Furthermore, the centrifugal guide frame (4) includes a flat rail (43), the interior of the flat rail (43) is slidably connected to a slide seat (44), the centrifugal guide frame (4) is assembled on the slide seat (44), the slide (23) is fixedly connected to a height adjustment frame (41) extending toward the axis of the annular ring (31), and the end of the height adjustment frame (41) away from the slide (23) is fixedly connected to a column (42) rotatably connected to the flat rail (43).

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] Through the above steps, this solution can accurately measure the position of the center of the end of the first hole, and adjust the angle α of the second hole according to the position of the center of the end of the first hole, so as to meet the requirement of aligning the first hole and the second hole and reduce the boss phenomenon.

[0026] This solution processes the tube body in sequence through cutting equipment at four workstations, and can accurately process four planes on the outside of the tube body. When the processing accuracy of the centrifugal guide frame is high, the error is correspondingly reduced when the above measurement method is performed through the four planes.

[0027] This solution can quickly position the main ring body to the outside of the pipe body by setting three synchronously extended support rods, thereby completing the assembly of the plane processing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic cross-sectional view of the tube body of the present invention;

[0029] Figure 2 This is a distance measurement diagram from the plane to the axis of the tube body of the present invention;

[0030] Figure 3 A distance measurement diagram from the plane of the present invention to the inner wall of the first hole;

[0031] Figure 4 Schematic diagram of the overall structure of the plane processing equipment of the present invention;

[0032] Figure 5 This is a schematic structural diagram of the self-positioning bracket of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the guide unit and the rotating frame of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the rotating frame of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the centrifugal guide frame of the present invention.

[0036] Description of the numbers in the figure:

[0037] 1. Self-positioning bracket; 11. Main ring body; 12. Guide ring; 13. Support rod; 14. Pipe claw; 15. Conducting round rod; 16. Annular rotating plate; 17. Spiral groove; 18. Locking piece; 2. Guide unit; 21. Limiting piece; 22. Guide frame; 23. Slide; 24. Spring limiting rod; 25. Return spring; 26. Threaded rod; 3. Rotating frame; 31. Annular ring; 32. Locking ear; 33. Locking hole; 34. Screw nail; 35. Cone locking part; 36. Connecting side ear; 4. Centrifugal guide frame; 41. Height adjustment frame; 42. Column; 43. Flat rail; 44. Slide; 5. Cutting equipment; 6. Tube body; 7. First hole; 8. Second hole; 91. First plane; 92. Second plane; 93. Third plane; 94. Fourth plane. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, the first hole 7 has a diameter of ΦID1 and a depth of L1; the second hole 8 has a diameter of ΦID2, ΦID1=ΦID2, δ1 is the eccentricity of the center of the first hole 7 relative to the center of the outer circle, δ2 is the eccentricity of the center of the second hole 8 relative to the center of the outer circle, α is the angle between the center line of the second hole 8 and the center line of the outer circle, and the ratio of the depth L1 of the first hole 7 to the diameter ID1 of the first hole 7 is greater than 100. It is required that no boss is allowed when the two holes are butted together. It is relatively difficult to control the offset of the end of the hole when processing the first hole 7, especially when the ratio of the depth to the diameter of the hole is greater than 100, the end of the hole will have a large offset, resulting in a large boss left at the butt joint when the end of the second hole 8 processed from the right end is butted against the first hole 7.

[0040] In order to reduce the boss, this technical solution adopts the following solutions to improve the existing technology;

[0041] Example 1:

[0042] See also Figure 1-3 A method for butting a long-axis eccentric deep hole with an inclined hole comprises the following steps:

[0043] Step 1: Use a plane processing device to process four planes in a circular array on the outside of the tube body 6 and at the intersection of the first hole 7 and the second hole 8, respectively named as the first plane 91, the second plane 92, the third plane 93 and the fourth plane 94, and measure the distances A1, B1, C1 and D1 from the first plane 91, the second plane 92, the third plane 93 and the fourth plane 94 to the axis of the tube body 6, as shown in the figure. Figure 2 As shown;

[0044] Step 2: Use an ultrasonic thickness gauge to measure the minimum values ​​A2, B2, C2, and D2 of the distances between the inner wall of the first hole 7 and the first plane 91, the second plane 92, the third plane 93, and the fourth plane 94 in the four directions of the first plane 91, the second plane 92, the third plane 93, and the fourth plane 94. Figure 3 As shown;

[0045] Step 3: Calculate the position of the center of the end of the first hole 7 based on the measurement results of steps 1 and 2. The calculation formula is:

[0046]

[0047] Step 4: Adjust the angle α of the second hole 8 according to the position of the center of the end of the first hole 7 until the end of the second hole 8 coincides with the center of the end of the first hole 7, thereby achieving the requirement of aligning the first hole 7 and the second hole 8 and reducing the boss phenomenon.

[0048] In summary, this technical solution can accurately measure the position of the center of the end of the first hole 7 through the above steps, and adjust the angle α of the second hole 8 according to the position of the center of the end of the first hole 7, so as to achieve the requirement of aligning the first hole 7 and the second hole 8 and reduce the boss phenomenon.

[0049] Example 2:

[0050] See also Figure 1-8 As shown, this embodiment discloses a specific structure of a plane processing equipment based on embodiment 1, which is specifically, the plane processing equipment includes a self-positioning bracket 1, the self-positioning bracket 1 can be quickly assembled on the outside of the tube body 6, the self-positioning bracket 1 is opposite to the axis of the tube body 6, and four workstations are provided on the self-positioning bracket 1, and the four workstations are respectively adapted to the first plane 91, the second plane 92, the third plane 93, and the fourth plane 94, and the outer side of the self-positioning bracket 1 is equipped with a rotating frame 3, and the rotating frame 3 is equipped with a guide unit 2, and the workstation corresponding to the guide unit 2 can be adjusted by the rotating frame 3, so that the guide unit 2 corresponds to the first plane 91, the second plane 92, the third plane 93 and the fourth plane 94 respectively. 4. A centrifugal guide frame 4 is assembled on the guide unit 2, and a cutting device 5 is assembled on the centrifugal guide frame 4. The distance between the cutting device 5 and the axis of the tube body 6 can be adjusted through the guide unit 2. After the adjustment is completed, the cutting device 5 can be started to grind the tube body 6, and the cutting device 5 can be moved on the centrifugal guide frame 4 to grind out a plane. After the grinding is completed, the corresponding station of the cutting device 5 is adjusted by the rotating frame 3 to process the next plane. By processing the tube body 6 through the cutting device 5 at four stations in turn, four planes can be processed on the outside of the tube body 6 more accurately. When the processing accuracy of the centrifugal guide frame 4 is high, the error is correspondingly reduced when the above measurement method is performed through four planes.

[0051] Among them, see Figure 4-5 As shown, the self-positioning bracket 1 includes a main circle body 11, on which at least three guide rings 12 in a ring array are arranged, and the inside of the guide ring 12 is slidably connected to a strut 13, and one end of the strut 13 located inside the main circle body 11 is fixedly connected to a connecting claw 14, and the shape of the connecting claw 14 is preferably V-shaped. The outside of the main circle body 11 is equipped with an adjustment unit connected to one end of multiple struts 13 located outside the main circle body 11, and the three struts 13 can be adjusted synchronously through the adjustment unit, so that the three struts 13 can clamp the tube body 6 synchronously, and the positioning can be completed quickly, and the axis is the same.

[0052] Among them, see Figure 5 As shown, the specific structure of the adjustment unit is introduced in detail here. The adjustment unit includes an annular rotating plate 16 and a plurality of conductive round rods 15. The annular rotating plate 16 is rotatably connected to the outside of the self-positioning bracket 1, and a spiral groove 17 is provided on the annular rotating plate 16. The plurality of conductive round rods 15 are respectively fixedly connected to the plurality of struts 13, and the conductive round rods 15 are slidably connected to the inside of the spiral groove 17. At this time, by rotating the annular rotating plate 16, the plurality of conductive round rods 15 can be synchronously pushed through the spiral groove 17, so that the plurality of conductive round rods 15 can adjust the struts 13, and in order to lock the annular rotating plate 16 after adjustment, a locking member 18 compatible with the annular rotating plate 16 is also provided on the main circle body 11, and the annular rotating plate 16 can be locked by the locking member 18.

[0053] Among them, see Figure 4 and Figure 6-7 As shown, the specific structure of the rotating frame 3 is introduced in detail here. The rotating frame 3 includes an annular ring 31 and four locking ears 32. The four locking ears 32 are fixedly connected to the circumference of the main ring body 11 in an annular array. The annular ring 31 is rotatably connected to the outside of the main ring body 11. The guide unit 2 is fixedly connected to the annular ring 31. A connecting side ear 36 is fixedly connected to the outside of the annular ring 31. When the connecting side ear 36 is aligned with any one of the locking ears 32, the guide unit 2 is located at the corresponding work station. A connecting piece is provided between the locking ear 32 and the connecting side ear 36 for connecting and locking the locking ear 32 and the connecting side ear 36.

[0054] The connecting piece includes a screw nail 34 threadedly connected to the connecting side ear 36. The end of the screw nail 34 close to the locking ear 32 is equipped with a frustum locking portion 35. The frustum locking portion 35 is frustum-shaped, and a locking hole 33 is provided on the locking ear 32. The diameter of the frustum locking portion 35 close to the locking ear 32 is smaller than the diameter of the locking hole 33 and can extend to the inside of the locking hole 33. The diameter of the frustum locking portion 35 away from the locking ear 32 is larger than the diameter of the locking hole 33. When the frustum locking portion 35 is inserted into the locking hole 33, there is no movable gap on the circumference, thereby ensuring its accuracy.

[0055] Please refer again Figure 4 and Figure 6-7 As shown, the guide unit 2 includes a guide frame 22 fixedly connected to the outside of the annular ring 31, and the interior of the guide frame 22 is slidably connected to a slide 23 fixedly connected to the centrifugal guide frame 4. By adjusting the position of the slide 23 inside the guide frame 22, the distance between the axis of the cutting device 5 and the tube body 6 can be adjusted.

[0056] In order to limit the minimum distance between the axis of the cutting device 5 and the tube body 6, a limiting component is also provided on the guide frame 22. The limiting component includes a threaded rod 26 fixedly connected to the inside of the guide frame 22, and the outer side of the threaded rod 26 is threadedly connected to a limiting member 21 located on the side of the slide 23 close to the annular ring 31. By adjusting the distance between the limiting member 21 and the axis of the tube body 6, the minimum distance between the axis of the cutting device 5 and the tube body 6 can be limited.

[0057] At the same time, in order to enable the slide 23 to automatically reset, a spring limit rod 24 is fixedly connected to the inside of the guide frame 22, and the slide 23 is slidably connected to the outside of the spring limit rod 24. A return spring 25 is sleeved on the outside of the spring limit rod 24 and located between the slide 23 and the inner wall of the guide frame 22 close to the annular ring 31. The deformation elastic force of the return spring 25 can push the slide 23 to automatically reset.

[0058] See also Figure 4 and Figure 6 and Figure 8 As shown, the centrifugal guide frame 4 includes a flat rail 43, and the flat rail 43 is internally slidably connected to a slide 44. The centrifugal guide frame 4 is assembled on the slide 44, and the position of the cutting device 5 can be adjusted on the same horizontal plane by sliding the slide 44.

[0059] In order to enable the cutting equipment 5 to move to a position closer to the axis of the tube body 6, the slide 23 is fixedly connected to a height adjustment frame 41 extending toward the axis of the annular ring 31, and the end of the height adjustment frame 41 away from the slide 23 is connected to the flat rail 43. At the same time, the connection method of the height adjustment frame 41 and the flat rail 43 is preferably a rotating connection, which can enable the cutting equipment 5 to have a larger range of movement. Specifically, the end of the height adjustment frame 41 away from the slide 23 is fixedly connected to a column 42 that is rotatably connected to the flat rail 43.

[0060] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A method for butting a long-axis eccentric deep hole with an inclined hole, characterized in that: The following steps are included: S1: Four planes in a circular array are machined on the outside of the tube body (6) and at the intersection of the eccentric deep hole (7) and the inclined hole (8) by plane machining equipment, and are named as the first plane (91), the second plane (92), the third plane (93) and the fourth plane (94), and the distances A1, B1, C1 and D1 from the first plane (91), the second plane (92), the third plane (93) and the fourth plane (94) to the axis of the tube body (6) are measured; S2: Using an ultrasonic thickness gauge, the minimum values ​​A2, B2, C2, and D2 of the distances between the inner wall of the eccentric deep hole (7) and the first plane (91), the second plane (92), the third plane (93), and the fourth plane (94) are measured in four directions: the first plane (91), the second plane (92), the third plane (93), and the fourth plane (94); S3: Calculate the position of the center of the end of the eccentric deep hole (7) based on the measurement results of S1 and S2; S4: adjusting the angle α of the inclined hole (8) according to the position of the center of the end of the eccentric deep hole (7) until the end of the inclined hole (8) coincides with the center of the end of the eccentric deep hole (7).

2. The method for docking a long-axis eccentric deep hole with an inclined hole according to claim 1, characterized in that: The calculation formula for the end center of the eccentric deep hole (7) in S3 is:

3. The method for docking a long-axis eccentric deep hole with an inclined hole according to claim 1, characterized in that: The plane processing equipment includes a self-positioning bracket (1), four workstations are arranged on the self-positioning bracket (1), and the four workstations are respectively adapted to a first plane (91), a second plane (92), a third plane (93), and a fourth plane (94). A rotating frame (3) is mounted on the outer side of the self-positioning bracket (1), a guide unit (2) is mounted on the rotating frame (3), a centrifugal guide frame (4) is mounted on the guide unit (2), and a cutting device (5) is mounted on the centrifugal guide frame (4).

4. The method for docking a long-axis eccentric deep hole with an inclined hole according to claim 3, characterized in that: The self-positioning bracket (1) comprises a main ring body (11), on which at least three guide rings (12) in a ring array are arranged, the guide ring (12) is slidably connected to a support rod (13) inside, one end of the support rod (13) located inside the main ring body (11) is fixedly connected to a pipe connection claw (14), and the outside of the main ring body (11) is equipped with an adjustment unit connected to one end of the plurality of support rods (13) located outside the main ring body (11).

5. The method for butting a long-axis eccentric deep hole with an inclined hole according to claim 4, characterized in that: The adjustment unit includes an annular rotating plate (16) and a plurality of conductive round rods (15). The annular rotating plate (16) is rotatably connected to the outside of the self-positioning bracket (1), and a spiral groove (17) is provided on the annular rotating plate (16). The plurality of conductive round rods (15) are respectively fixedly connected to a plurality of support rods (13). The conductive round rods (15) are slidably connected to the inside of the spiral groove (17). The main ring body (11) is also provided with a locking piece (18) adapted to the annular rotating plate (16).

6. The method for butting a long-axis eccentric deep hole with an inclined hole according to claim 4, characterized in that: The rotating frame (3) includes an annular ring (31) and four locking ears (32). The four locking ears (32) are fixedly connected to the circumference of the main ring body (11) in an annular array. The annular ring (31) is rotatably connected to the outside of the main ring body (11). The guide unit (2) is fixedly connected to the annular ring (31). The outside of the annular ring (31) is fixedly connected with a connecting side ear (36). A connecting piece is provided between the locking ear (32) and the connecting side ear (36) for connecting and locking the locking ear (32) and the connecting side ear (36).

7. The method for butting a long-axis eccentric deep hole with an inclined hole according to claim 6, characterized in that: The connecting piece includes a screw nail (34) threadedly connected to the connecting side ear (36); the end of the screw nail (34) close to the locking ear (32) is equipped with a frustum-shaped frustum locking portion (35); the locking ear (32) is provided with a locking hole (33); the diameter of the frustum locking portion (35) close to the locking ear (32) is smaller than the diameter of the locking hole (33); the diameter of the frustum locking portion (35) away from the locking ear (32) is larger than the diameter of the locking hole (33).

8. The method for butting a long-axis eccentric deep hole with an inclined hole according to claim 6, characterized in that: The guide unit (2) includes a guide frame (22) fixedly connected to the outside of the annular ring (31), the guide frame (22) is internally slidably connected to a slide frame (23) fixedly connected to the centrifugal guide frame (4), and a limiting assembly is also provided on the guide frame (22), the limiting assembly includes a threaded rod (26) fixedly connected to the inside of the guide frame (22), and the threaded rod (26) is externally threadedly connected to a limiting member (21) located on a side of the slide frame (23) close to the annular ring (31).

9. The method for butting a long-axis eccentric deep hole with an inclined hole according to claim 8, characterized in that: A spring limiting rod (24) is fixedly connected to the interior of the guide frame (22), the slide (23) is slidably connected to the outside of the spring limiting rod (24), and a return spring (25) is sleeved on the outside of the spring limiting rod (24) and located between the slide (23) and the inner wall of the guide frame (22) close to the annular ring (31).

10. The method for butting a long-axis eccentric deep hole with an inclined hole according to claim 8, characterized in that: The centrifugal guide frame (4) includes a flat rail (43), the interior of the flat rail (43) is slidably connected to a slide seat (44), the centrifugal guide frame (4) is assembled on the slide seat (44), the slide (23) is fixedly connected to a height adjustment frame (41) extending toward the axis of the annular ring (31), and the end of the height adjustment frame (41) away from the slide (23) is fixedly connected to a column (42) rotatably connected to the flat rail (43).

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