Follow-up oil and gas distributor core column axial and radial drilling tool and method

Abstract

The application discloses a follow-up oil and gas distributor core column axial and radial drilling tool and method, and belongs to the field of machining equipment. The tool comprises a follow-up driving device, a sliding platform, a turnover mechanism, an indexing mechanism, a displacement mechanism and a clamping mechanism. The follow-up driving device is installed on the drilling machine spindle lifting shaft sleeve, and the driving rack thereof is respectively engaged with half gears of the indexing mechanism and the displacement mechanism. During the downward movement of the drilling machine spindle, the core column is automatically driven to complete the rotary indexing and axial displacement. The drilling method disclosed by the application is based on the above tool, and realizes the automatic indexing, displacement and resetting of the core column during the machining of the radial hole and the axial hole. The application realizes the full-automatic machining of the axial hole and the radial hole of the core column under one-time clamping, effectively avoids the manual operation error, improves the machining precision and efficiency, and has good process adaptability and automation degree.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of machining equipment, and particularly relates to a follow-up type axial and radial drilling tool and method for an oil-gas distributor core column. BACKGROUND

[0002] The oil-gas distributor is a key component in an oil-gas lubrication system, and is responsible for distributing oil-gas mixture to each lubrication point as required. According to different structural forms, the existing oil-gas distributors can be divided into two categories of primary and secondary, and each category has various types such as one-way oil outlet and two-way oil outlet, and the number of oil outlets is usually between 2 and 10. The oil-gas distributor mainly comprises an oil-gas inlet joint, an inlet filter, a core column, a shell and an outlet joint, wherein the core column is a core part, and is provided with axial holes and corresponding radial holes (as shown in FIG. Figure 20

[0003] Due to the characteristics of small batch and multiple specifications of the production of related parts of the oil-gas distributor, enterprises usually adopt flexible production strategies to control costs, so in the manufacturing process of the core column of the oil-gas distributor, the hole machining of the core column mainly relies on manual operation of an ordinary drilling machine or a milling machine, and a dividing head is used for manual indexing positioning.

[0004] However, the existing machining method still has problems of complicated operation and low qualified product rate. Specifically, the axial positions of the radial holes of different branches are different, so when the radial holes are machined, not only manual indexing is needed frequently, but also the position of the drilling machine workbench needs to be adjusted manually to ensure alignment of the hole position, which is easy to cause missed drilling or hole position deviation due to human negligence. On the other hand, the axis of the conventional dividing head is horizontally arranged, and can only assist in completing the indexing machining of the radial holes, so when the axial holes are machined, the workpiece needs to be clamped and fixed vertically again, and the hole position is found by translating the drilling machine workbench along the X-axis and Y-axis directions, which not only has low efficiency, but also is difficult to guarantee the circumferential indexing accuracy between the axial holes. SUMMARY

[0005] The application provides a follow-up type axial and radial drilling tool and method for an oil-gas distributor core column, which aims to: 1. avoid frequent manual indexing, displacement and repeated clamping of the workpiece in the machining process, so as to improve the operation efficiency and reduce the labor intensity; and 2. eliminate the hole position deviation or missed drilling caused by inaccurate positioning by human beings, and guarantee the qualified product rate.

[0006] The technical scheme of the application is as follows:

[0007] A follow-up type axial and radial drilling tool for an oil-gas distributor core column comprises an indexing mechanism, and further comprises a follow-up type driving device, a sliding platform, a turnover mechanism, a displacement mechanism and a clamping mechanism.

[0008] ​The follower drive device is fixedly installed on the lifting bushing of the drill spindle, and a drive rack is provided on the lower side of the follower drive device.

[0009] The sliding platform is used to be fixedly installed on the worktable of the drilling machine;

[0010] The flipping mechanism is mounted on the slide of the sliding platform by a rotatable connection. The flipping mechanism includes a first base plate and a second base plate that are perpendicular to each other. When the first base plate contacts the top surface of the slide, the drilling fixture is in the radial hole processing state. When the second base plate contacts the top of the slide, the drilling fixture is in the axial hole processing state.

[0011] The indexing mechanism, the shifting mechanism, and the clamping mechanism are all mounted on the first base plate;

[0012] The clamping mechanism is used to mount the core being processed;

[0013] The power input end of the indexing mechanism is the first half gear, and the power output end is mechanically connected to the clamping mechanism to drive the installed mandrel to rotate and index.

[0014] The power input end of the shifting mechanism is the second half gear, and the power output end is mechanically connected to the clamping mechanism to drive the clamping mechanism to translate along the axial direction of the core column.

[0015] The first and second half gears are arranged vertically and are both used to mesh with the drive rack.

[0016] As a further improvement to the axial and radial drilling fixture for the core column of the follow-up oil and gas distributor: the bottom of the side of the first half gear near the drive rack is a tooth gap area; the lower part of the first half gear is provided with a first indexing counterweight block;

[0017] The bottom of the second half gear near the drive rack has a tooth gap area; the lower part of the second half gear is provided with a first displacement counterweight.

[0018] As a further improvement to the axial and radial drilling fixture of the core column of the follow-up oil and gas distributor: the indexing mechanism also includes a second base, an indexing drive shaft, and an indexing driven shaft;

[0019] The second base is mounted on the first base plate; the indexing drive shaft and the indexing driven shaft are arranged in parallel and are both mounted on the second base by a rotatable connection.

[0020] The first half gear is rotatably configured relative to the second base and is connected to the indexing drive shaft via a transmission.

[0021] The indexing drive shaft is provided with multiple indexing stations along the axial direction; each indexing station is equipped with an indexing drive gear through a bearing, the indexing drive gear is a single-tooth gear, and a third indexing counterweight is also installed on the indexing drive gear; an indexing locking screw is also installed on the indexing drive gear, and the inner end of the indexing locking screw is used to contact the indexing drive shaft;

[0022] Multiple indexing driven gears, each corresponding to an indexing driving gear, are fixedly mounted on the indexing driven shaft along the axial direction. The indexing driving gear and the corresponding indexing driven gear are engaged, and the number of teeth of each indexing driven gear is equal to the corresponding number of indexes.

[0023] The indexing driven shaft is the power output end of the indexing mechanism.

[0024] As a further improvement to the axial and radial drilling tooling of the core column of the follow-up oil and gas distributor, the indexing mechanism also includes an indexing positioning mechanism that corresponds one-to-one with each indexing driven gear.

[0025] The indexing and positioning mechanism includes a first clamping plate, a first tension spring, a first tension transmission component, a first rotating pin, and a first connecting pin.

[0026] The middle part of the first card plate is rotatably connected to the second base through a first rotating pin, and the end of the first card plate is used to mesh with the corresponding indexing driven gear;

[0027] One end of the first tension spring is rotatably connected to the second base, and the other end is connected to one end of the first tension transmission component. The other end of the first tension transmission component is rotatably connected to the first clamping plate through the first connecting pin. The first rotating pin is located between the first connecting pin and the first tension spring.

[0028] As a further improvement to the axial and radial drilling fixture of the core column of the follow-up oil and gas distributor: the displacement mechanism also includes a third base, a displacement drive shaft and a displacement driven shaft;

[0029] The third base is mounted on the first base plate; the displacement drive shaft and the displacement driven shaft are arranged in parallel and are both mounted on the third base by a rotatable connection.

[0030] The second half gear is rotatably mounted relative to the third base and is connected to the shifting drive shaft.

[0031] The shifting drive shaft is provided with multiple shifting stations along the axial direction; each shifting station is equipped with a shifting drive gear through a bearing, the shifting drive gear is an incomplete gear, and the number of teeth of each shifting drive gear is different; a second shifting counterweight is also installed on the shifting drive gear; a shifting locking screw is also installed on the shifting drive gear, and the inner end of the shifting locking screw is used to contact the shifting drive shaft;

[0032] A shift driven gear is fixedly mounted on the shift driven shaft, and each shift driving gear is engaged with the shift driven gear;

[0033] The shift driven shaft is fixedly connected to a gear shaft that serves as the power output end of the shift mechanism. The clamping mechanism includes a movable seat, and the gear shaft meshes with a rack at the bottom of the movable seat.

[0034] As a further improvement to the axial and radial drilling tooling of the core column of the follow-up oil and gas distributor: the displacement mechanism also includes a displacement positioning mechanism;

[0035] The displacement and positioning mechanism includes a positioning gear, a second clamping plate, a second tension spring, a second tension transmission component, a second rotating pin, and a second connecting pin.

[0036] The positioning gear is fixedly connected to the displacement driven shaft or gear shaft;

[0037] The second card plate is rotatably connected to the first base mounted on the first base plate via a second rotating pin, and the end of the second card plate is used to mesh with a positioning gear;

[0038] One end of the second tension spring is rotatably connected to the first base, and the other end is connected to one end of the second tension transmission component. The other end of the second tension transmission component is rotatably connected to the second clamping plate through the second connecting pin. The second rotating pin is located between the second connecting pin and the second tension spring.

[0039] As a further improvement to the axial and radial drilling tooling of the core column of the follow-up oil and gas distributor: the displacement mechanism also includes an automatic return mechanism, which includes a return spring, a stop block, a return pry bar, a lever, an intermediate connecting rod, and a swing rod;

[0040] One end of the reset spring is connected to the first base, and the other end is connected to the movable seat;

[0041] The collision block is mounted on the movable seat; the middle part of the return lever is rotatably connected to the first base, the upper end of the return lever is used to collide with the collision block, and the lower end of the return lever is provided with a first wheel tooth, which meshes with the second wheel tooth at the outer edge of the second card plate;

[0042] The middle part of the swing rod is rotatably connected to the first base, the upper end of the swing rod is used to collide with the moving seat, the lower end is rotatably connected to one end of the middle connecting rod, and the other end of the middle connecting rod is rotatably connected to the lower end of the lever; the middle part of the lever is rotatably connected to the first base, and the lever head at the upper end of the lever contacts the second card plate.

[0043] As a further improvement to the axial and radial drilling fixture for the core column of the follow-up oil and gas distributor: the clamping mechanism includes a movable seat, a clamping spring, a pressure plate, a core column sleeve plate, an indexing bushing, a loose nut, a core column pressure head, and a positioning device.

[0044] A first base is mounted on the first base plate, and the movable seat is slidably connected to the first base plate and mechanically connected to the power output end of the shifting mechanism;

[0045] An indexing bushing is mounted on the movable seat via a rotatable connection. The indexing bushing is used for a sliding fit connection with the power output end of the indexing mechanism. The direction of this sliding fit is parallel to the rotation axis of the indexing bushing.

[0046] The core column sleeve plate is installed on the left end of the indexing bushing via a loose nut. The left end of the core column sleeve plate is used to mate with the right end of the core column being processed. The positioning device is provided between the indexing bushing and the core column sleeve plate, and between the core column sleeve plate and the core column being processed.

[0047] The pressure plate is slidably connected to the movable seat. A detachable core pressure head is mounted on the pressure plate via a bearing. The core pressure head is used to cooperate with the left end of the core being processed. One end of the clamping tension spring is connected to the pressure plate and the other end is connected to the movable seat. It is used to pull the pressure plate to move to the right.

[0048] As a further improvement to the axial and radial drilling tooling of the core column of the follow-up oil and gas distributor: the follow-up drive device includes a linkage rack, an adjusting slider and a crossbeam;

[0049] The crossbeam is horizontally set and fixed on the lifting bushing, and the crossbeam is provided with a transverse adjustment rack.

[0050] The horizontal groove on the adjusting slider is in sliding engagement with the cross frame, and the vertical groove on the adjusting slider is in sliding engagement with the vertical part of the linkage rack.

[0051] The linkage rack is provided with a vertical adjustment rack section and a drive rack section;

[0052] The adjusting slider is also equipped with a transverse adjusting gear that meshes with the transverse adjusting rack and a vertical adjusting gear that meshes with the vertical adjusting rack.

[0053] The adjusting slider is also equipped with two annular locking nuts, which are used to lock the horizontal adjusting gear and the vertical adjusting gear respectively.

[0054] The present invention also provides a method for axial and radial drilling of the core column of a follower-type oil and gas distributor, which is based on the above-mentioned tooling for axial and radial drilling of the core column of a follower-type oil and gas distributor.

[0055] When in the radial hole machining state, the first base plate of the flipping mechanism contacts the top surface of the sliding platform. After adjusting the sliding platform to bring the drill bit to the target position, the radial hole machining cycle is executed.

[0056] Step A1. In the initial state, the first half gear of the indexing mechanism and the second half gear of the shifting mechanism are both disengaged from the drive rack of the follower drive device;

[0057] Step A2. The drill spindle moves downward, causing the follower drive device to move downward. During the downward movement, the drive rack meshes with the first half gear, causing the first half gear to rotate one revolution, driving the indexing mechanism to work, and causing the mandrel held by the clamping mechanism to rotate by a set angle to complete the indexing. The drive rack also meshes with the second half gear, causing the second half gear to rotate one revolution, driving the shifting mechanism to work, and causing the clamping mechanism and the mandrel it to move axially a set distance.

[0058] Step A3. After the drive rack part separates from the first half gear and the second half gear, the drill spindle continues to move downward, and the drill bit performs radial drilling on the core column that has completed indexing and displacement;

[0059] Step A4. After drilling is completed, the drill spindle rises, driving the follower drive device to rise. During the rising process, the first half gear and the second half gear rotate in opposite directions under the action of the drive rack, and the angle of this reverse rotation is less than the preset angle to avoid triggering the indexing mechanism and the shifting mechanism. After the first half gear and the second half gear are separated from the drive rack, they return to their initial state under the action of the first indexing counterweight and the first shifting counterweight, respectively.

[0060] When in the axial hole machining state, the second base plate of the flipping mechanism contacts the top surface of the sliding platform. After adjusting the sliding platform to bring the drill bit to the target position, the axial hole machining cycle is executed:

[0061] Step B1. In the initial state, the first half gear of the indexing mechanism disengages from the drive rack of the follower drive device;

[0062] Step B2. The drill spindle moves down, driving the follower drive device to move down; during the downward movement, the drive rack meshes with the first half gear, causing the first half gear to rotate one revolution, driving the indexing mechanism to work, and driving the core column held by the clamping mechanism to rotate by a set angle to complete the indexing.

[0063] Step B3. After the drive rack and pinion are separated from the first half gear, the drill spindle continues to move downward, and the drill bit performs axial drilling on the end face of the indexed core column.

[0064] Step B4. After drilling is completed, the drill spindle rises, driving the follower drive device to rise. During the rising process, the first half gear rotates in the opposite direction under the action of the drive rack, and the angle of the reverse rotation is less than the preset angle to avoid triggering the indexing mechanism. After the first half gear separates from the drive rack, it returns to its initial state under the action of the first indexing counterweight.

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] 1. This invention, through the coordinated operation of a follow-up drive device, indexing mechanism, and shifting mechanism, automatically triggers the indexing rotation and axial shift of the mandrel during the downward movement of the drilling machine spindle, achieving fully automatic adjustment of the workpiece position during drilling. This design effectively avoids the frequent manual indexing, shifting, and repeated clamping operations in traditional machining, not only improving drilling efficiency but also preventing hole position offsets or missed drilling caused by human alignment errors, thus increasing the yield of finished products.

[0067] 2. Through the combined design of the flipping mechanism and the sliding platform, this fixture can quickly switch between radial hole machining and axial hole machining states. When the first base plate of the flipping mechanism contacts the sliding table, the fixture is in the radial hole machining state; while when the second base plate contacts the sliding table, it switches to the axial hole machining state. This structure makes it possible to complete the machining of both axial and radial holes of the mandrel on the same fixture without having to reclamp the workpiece midway, ensuring the relative positional accuracy between the axial and radial holes and further improving the overall machining efficiency.

[0068] 3. The indexing mechanism adopts a multi-station indexing drive gear and indexing driven gear combination scheme. By using indexing drive gears and indexing driven gears with different numbers of teeth, it can flexibly adapt to various indexing requirements. Similarly, the shifting mechanism, by setting incomplete gears with different numbers of teeth as shifting drive gears, can achieve precise control of different shifting distances, thus expanding the process adaptability of the tooling.

[0069] 4. By engaging and locking the first clamping plate with the indexing driven gear in the indexing positioning mechanism, the core column is ensured to stably stop at the preset angle after each indexing, improving the indexing repeatability accuracy. Similarly, the shifting positioning mechanism in the shifting mechanism, through the engagement of the second clamping plate with the positioning gear, restricts the gear shaft to rotate only an integer multiple of the angle corresponding to one tooth of the positioning gear, thus ensuring the accuracy of each shift distance. Furthermore, after the radial hole machining cycle is completed, the automatic return mechanism triggers the return pry bar via a stop block, causing the second clamping plate to disengage from the positioning gear. The return spring then drives the clamping mechanism to reset. When the moving seat impacts the swing rod, the lever pushes the second clamping plate to re-engage with the positioning gear, ensuring the clamping mechanism stops accurately in the initial position. The entire return process is completed automatically without manual intervention, improving the automation level of the equipment.

[0070] 5. The follow-up drive device is equipped with a horizontal adjustment gear and a vertical adjustment gear, which can adjust the position of the linkage rack rod in the horizontal and vertical directions respectively. This design ensures that, provided the drill bit is aligned with the target position, the drive rack can accurately mesh with the half gears of the indexing mechanism and the shifting mechanism, adapting to the processing requirements of mandrels of different specifications and enhancing the adjustment flexibility and applicability of the tooling. Attached Figure Description

[0071] Figure 1 This is a schematic diagram of the overall structure of the embodiment in the radial drilling state. To show the internal structure, the adjusting slider, indexing mechanism, clamping mechanism and sliding platform are shown in cross section.

[0072] Figure 2 for Figure 1 A magnified view of part A in the middle.

[0073] Figure 3 For along Figure 2 The sectional view of the adjustment slider and related parts taken from the sectional view line II.

[0074] Figure 4 For along Figure 3 The sectional view of the adjustment slider and related parts taken from the sectional view II-II.

[0075] Figure 5 for Figure 1 A magnified view of part B in the middle section.

[0076] Figure 6 for Figure 1 A magnified view of part C in the middle.

[0077] Figure 7 This is a top view of the embodiment in the radial drilling state. To show the internal structure, the indexing mechanism, the shifting mechanism, and the clamping mechanism are shown in cross section.

[0078] Figure 8 for Figure 7 A magnified view of part D in the middle.

[0079] Figure 9 This is a structural diagram illustrating the positional relationship between the linkage rack and pinion, the first half gear, the driving bevel gear, and the second half gear.

[0080] Figure 10 The diagram depicts the structure of the indexing drive gear, the indexing driven gear, the first clamping plate, and related components. The first clamping plate and the indexing driven gear are in meshing.

[0081] Figure 11The diagram depicts the structure of the indexing drive gear, the indexing driven gear, the first clamping plate, and related components. In the diagram, the first clamping plate and the indexing driven gear are in a separated state.

[0082] Figure 12 This is a schematic diagram illustrating the structure of the shifting drive gear, the shifting driven gear, and related components.

[0083] Figure 13 This is a side view of the embodiment in the radial drilling state. The displacement driven shaft, the first base, the moving seat, and the first half gear are shown in cross section.

[0084] Figure 14 This is a schematic diagram of the overall structure of the embodiment in the radial drilling state. The indexing mechanism and clamping mechanism are shown in cross section. The third base and related components of the shifting mechanism are omitted. This is used to depict the specific structure of the shifting and positioning mechanism and the automatic return mechanism. The second card plate and the positioning gear are in a meshing state in the figure.

[0085] Figure 15 for Figure 14 A magnified view of part E in the middle.

[0086] Figure 16 This is a schematic diagram of the overall structure of the embodiment in the radial drilling state. The indexing mechanism and clamping mechanism are shown in cross section. The third base and related components of the shifting mechanism are omitted. This is used to depict the specific structure of the shifting positioning mechanism and the automatic return mechanism. The second card plate and the positioning gear are in a separated state in the figure.

[0087] Figure 17 for Figure 16 A magnified view of part F in the middle.

[0088] Figure 18 This is one of the overall structural schematic diagrams of the embodiment in the axial drilling state. The third base and related components of the shifting mechanism are omitted in the figure to depict the state of the tooling in the starting position.

[0089] Figure 19 This is the second overall structural schematic diagram of the embodiment in the axial drilling state. The third base of the displacement mechanism and related components are omitted in the figure to depict the state when the tooling is about to be axially drilled after the indexing is completed.

[0090] Figure 20 This is a schematic diagram illustrating the structure of the oil and gas distributor core column.

[0091] The reference numerals in the figures include:

[0092] 1. Lifting bushing; 2. Follow-up drive device; 3. Sliding platform; 4. Tilting mechanism; 5. Indexing mechanism; 6. Shifting mechanism; 7. Clamping mechanism; 201. Linkage rack and pinion; 202. Adjusting slider; 203. Crossbeam; 204. Horizontal adjusting gear; 205. Horizontal adjusting rack and pinion section; 206. Vertical adjusting rack and pinion section; 207. Vertical adjusting gear; 208. Ring locking nut; 209. Drive rack and pinion section; 301. Base; 302. Screw; 303. 501. Slide table; 502. First base; 503. Second base; 504. First clamping plate; 505. Indexing driven gear; 506. Indexing driven shaft; 507. Indexing drive shaft; 508. Indexing lock screw; 509. Driven bevel gear; 510. Second indexing counterweight; 511. First half gear; 512. First indexing counterweight; 513. Third indexing counterweight; 514. First tension spring; 515. First tension transmission component, 516, First rotating pin, 517, First connecting pin, 601, Second half gear, 602, Displacement drive shaft, 603, Displacement locking screw, 604, Displacement drive gear, 605, Displacement driven gear, 606, Displacement driven shaft, 607, Third base, 608, Gear shaft, 609, Positioning gear, 610, First displacement counterweight, 611, Return spring, 612, Second displacement counterweight, 613, Collision block, 614 615. Second rotating pin, 616. Second connecting pin, 617. Second tension transmission component, 618. Return lever, 619. Second tension spring, 620. Lever, 621. Intermediate connecting rod, 622. Swing rod, 701. Moving seat, 702. Clamping tension spring, 703. Pressure plate, 704. Core column pressure head, 705. Indexing bushing, 706. Loose nut, 707. Core column sleeve plate, 708. First positioning pin, 709. Second positioning pin. Detailed Implementation

[0093] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0094] A follow-up oil-gas distributor core column axial and radial drilling tool is used for automated drilling of axial and radial holes in the oil-gas distributor core column.

[0095] like Figure 1 and Figure 7As shown, the drilling fixture mainly includes a follower drive device 2, a sliding platform 3, a tilting mechanism 4, an indexing mechanism 5, a shifting mechanism 6, and a clamping mechanism 7. The follower drive device 2 is fixedly installed on the lifting bushing 1 of the drill spindle, and its lower end side is provided with a drive rack portion 209. The sliding platform 3 is used to be fixedly installed on the worktable of the drill. The tilting mechanism 4 is mounted on the slide table 303 of the sliding platform 3 by a rotatable connection; the tilting mechanism 4 includes a first base plate and a second base plate that are perpendicular to each other. When the first base plate contacts the top surface of the slide table 303, the fixture is in the radial hole machining state; when the second base plate contacts the top surface of the slide table 303, the fixture is in the axial hole machining state. The indexing mechanism 5, the shifting mechanism 6, and the clamping mechanism 7 are all mounted on the first base plate. The clamping mechanism 7 is used to install the mandrel to be machined. The power input end of the indexing mechanism 5 is the first half gear 511, and the power output end is mechanically connected to the clamping mechanism 7 to drive the installed mandrel to perform rotary indexing. The power input end of the shifting mechanism 6 is the second half gear 601, and the power output end is mechanically connected to the clamping mechanism 7 to drive the clamping mechanism 7 to translate along the axial direction of the core column.

[0096] like Figure 9 The first half gear 511 and the second half gear 601 are arranged vertically and both are used to mesh with the drive rack 209. The bottom of the first half gear 511 near the drive rack 209 has a tooth gap area; a first indexing counterweight 512 is provided at the bottom of the first half gear 511. The bottom of the second half gear 601 near the drive rack 209 has a tooth gap area; a first shifting counterweight 610 is provided at the bottom of the second half gear 601.

[0097] Specifically, such as Figures 2 to 4The follower-type drive device 2 includes a linkage rack 201, an adjusting slider 202, and a crossbeam 203. The crossbeam 203 is horizontally arranged and fixed on the lifting bushing 1, and has a transverse adjusting rack portion 205. The transverse groove on the adjusting slider 202 slides in cooperation with the crossbeam 203, and the vertical groove on the adjusting slider 202 slides in cooperation with the vertical portion of the linkage rack 201. The linkage rack 201 has a vertical adjusting rack portion 206 and a drive rack portion 209. The adjusting slider 202 is also equipped with a transverse adjusting gear 204 that meshes with the transverse adjusting rack portion 205 and a vertical adjusting gear 207 that meshes with the vertical adjusting rack portion 206 via a shaft hole clearance fit. The adjusting slider 202 is also equipped with two annular locking nuts 208, which are used to lock the transverse adjusting gear 204 and the vertical adjusting gear 207 from the outside, respectively. By rotating the horizontal adjusting gear 204 and the vertical adjusting gear 207 with a hex wrench, the position of the linkage rack 201 relative to the drill spindle in the horizontal and vertical directions can be adjusted respectively to meet the processing requirements of mandrels of different specifications. Furthermore, the central through hole of the annular locking nut 208 is a hexagonal hole, which can be operated with a hex wrench, and its size is larger than the hexagonal hole at the cross-section of the corresponding horizontal adjusting gear 204 or vertical adjusting gear 207, facilitating the rotation of the horizontal adjusting gear 204 and vertical adjusting gear 207. After tightening both annular locking nuts 208, the horizontal adjusting gear 204 and vertical adjusting gear 207 will be compressed and unable to rotate.

[0098] like Figure 6 and Figure 13 As shown, the sliding platform 3 includes a base 301, a screw 302, and a slide 303. The base 301 is bolted to the drilling machine worktable. The screw 302 is parallel to the base 301 and arranged in a left-right direction, with both ends rotatably connected to the base 301. The slide 303 is slidably connected to the base 301 via a dovetail slide rail, and a nut at the bottom of the slide 303 engages with the screw 302. Rotating the screw 302 allows the slide 303 to move left and right relative to the base 301, thereby adjusting the position of the workpiece and other mechanisms relative to the drilling machine spindle.

[0099] like Figure 1 and Figure 13 As shown, the intersection of the first and second substrates of the flipping mechanism 4 is designed as an arc, and flipping plate bracket ears are provided on the front and rear sides respectively. The flipping plate bracket ears are rotatably connected to the platform support ear plate on the slide table 303 through the flipping shaft. After the first or second substrate contacts the slide table 303, it can maintain the contact state by the gravity of the indexing mechanism 5 and the shifting mechanism 6 until the next manual flipping.

[0100] like Figure 5 and Figure 13As shown, the clamping mechanism 7 includes a movable seat 701, a clamping spring 702, a pressure plate 703, a core column sleeve plate 707, an indexing bushing 705, a loose nut 706, a core column pressure head 704, and a positioning device. A first base 401 is fixedly mounted on a first base plate. The movable seat 701 is slidably connected to the first base 401 and mechanically connected to the power output end of the shifting mechanism 6. An indexing bushing 705 is mounted on the movable seat 701 via bearings. The indexing bushing 705 is used to slide and engage with the power output end of the indexing mechanism 5 in a left-right direction, and the direction of this sliding engagement is parallel to the rotation axis of the indexing bushing 705. The core column sleeve plate 707 and the retaining ring are mounted on the left end of the indexing bushing 705 via the loose nut 706. The left end of the core column sleeve plate 707 is used to engage with the right end of the core column being processed. Positioning devices are provided between the indexing bushing 705 and the mandrel base plate 707, and between the mandrel base plate 707 and the mandrel being processed. Specifically, these include a first positioning pin 708 positioned between the indexing bushing 705 and the mandrel base plate 707, and a second positioning pin 709 positioned between the mandrel base plate 707 and the mandrel being processed. The pressure plate 703 and the movable seat 701 are slidably connected in the left-right direction. A detachable mandrel pressure head 704 is mounted on the pressure plate 703 via bearings, and the mandrel pressure head 704 is used to engage with the left end of the mandrel being processed. A clamping spring 702 is connected at one end to the pressure plate 703 and at the other end to the movable seat 701, and is used to pull the pressure plate 703 to the right, thereby pressing the mandrel being processed.

[0101] like Figures 7 to 11As shown, the indexing mechanism 5 includes a second base 501, an indexing drive shaft 505, and an indexing driven shaft 504. The second base 501 is fixedly mounted on the first base plate. The indexing drive shaft 505 and the indexing driven shaft 504 are arranged in parallel and are both mounted on the second base 501 via bearings. A first half gear 511 is rotatably arranged relative to the second base 501 and is drive-connected to the indexing drive shaft 505. Specifically, a drive bevel gear 509 is fixedly connected to the first half gear 511, and a driven bevel gear 508 is mounted on the end of the indexing drive shaft 505. The drive bevel gear 509 and the driven bevel gear 508 mesh perpendicularly to achieve a drive connection from the first half gear 511 to the indexing drive shaft 505. A second indexing counterweight 510 is also mounted on the driven bevel gear 508 to maintain the initial state when no external force is applied. Multiple indexing stations are provided along the axial direction on the indexing drive shaft 505. Each indexing station is equipped with an indexing drive gear 506 via bearings. The indexing drive gear 506 is a single-tooth gear, and a third indexing counterweight 513 is also installed on the indexing drive gear 506 to keep the teeth facing downwards when no external force is applied. An indexing locking screw 507 is also installed on the indexing drive gear 506, and the inner end of the indexing locking screw 507 is used to contact the indexing drive shaft 505, so that the indexing drive gear 506 rotates synchronously with the indexing drive shaft 505. Multiple indexing driven gears 503, corresponding one-to-one with the indexing drive gears 506, are fixedly installed along the axial direction on the indexing driven shaft 504. The indexing drive gears 506 and their corresponding indexing driven gears 503 cooperate with each other, and the number of teeth of each indexing driven gear 503 is equal to the corresponding number of indexes (16, 18, 20, 21, 24, etc.). The indexing driven shaft 504 is the power output end of the indexing mechanism 5. Its left end is a square shaft, which is inserted into the square hole of the indexing sleeve 705, thereby driving the indexing sleeve 705 to rotate synchronously without hindering the left and right movement of the clamping mechanism 7.

[0102] like Figure 10 and 11The indexing mechanism 5 also includes an indexing positioning mechanism corresponding to each indexing driven gear 503. The indexing positioning mechanism includes a first clamping plate 502, a first tension spring 514, a first tension transmission member 515, a first rotating pin 516, and a first connecting pin 517. The middle part of the first clamping plate 502 is rotatably connected to the second base 501 via the first rotating pin 516, and the end of the first clamping plate 502 is used to mesh with the corresponding indexing driven gear 503. One end of the first tension spring 514 is rotatably connected to the second base 501, and the other end is connected to one end of the first tension transmission member 515. The other end of the first tension transmission member 515 is rotatably connected to the first clamping plate 502 via the first connecting pin 517; the first rotating pin 516 is located between the first connecting pin 517 and the first tension spring 514. The first clamping plate 502 has two states: engaged and disengaged. When the first tension spring 514 is located on one side of the first rotating pin 516, causing the first clamping plate 502 to approach the corresponding indexing driven gear 503 ( Figure 10 As shown), it is in an engaged state. This engagement does not obstruct the rotation of the indexing driven gear 503, but it can automatically re-engage after the gear rotates, ensuring the accuracy of the stopping position. When the first clamping plate 502 is rotated by an external force (usually manually), causing the first tension spring 514 to be located on the other side of the first rotating pin 516 ( Figure 11 As shown), the first tension spring 514 will cause the first clamping plate 502 to move away from the corresponding indexing driven gear 503.

[0103] like Figure 7 , Figure 8 , Figure 9 , Figure 12 , Figure 13As shown, the shifting mechanism 6 includes a third base 607, a shifting drive shaft 602, and a shifting driven shaft 606. The third base 607 is mounted on the first base plate. The shifting drive shaft 602 and the shifting driven shaft 606 are arranged in parallel and are both mounted on the third base 607 by a rotatable connection. The second half gear 601 is rotatably arranged relative to the third base 607 and is drively connected to the shifting drive shaft 602. In this embodiment, the second half gear 601 is mounted on the end of the shifting drive shaft 602. The shifting drive shaft 602 has multiple shifting stations along the axial direction. Each shifting station is equipped with a shifting drive gear 604 via a bearing. The shifting drive gear 604 is an incomplete gear, and the number of teeth of each shifting drive gear 604 is different and directly proportional to the corresponding shifting distance. A second shifting counterweight 612 is also installed on the shifting drive gear 604; a shifting locking screw 603 is also installed on the shifting drive gear 604, the inner end of which is used to contact the shifting drive shaft 602, thereby causing the shifting drive gear 604 to rotate synchronously with the shifting drive shaft 602. A shifting driven gear 605 is fixedly installed on the shifting driven shaft 606, and each shifting drive gear 604 cooperates with the shifting driven gear 605. A gear shaft 608, which serves as the power output end of the shifting mechanism 6, is fixedly connected to the shifting driven shaft 606, and the gear shaft 608 meshes with the rack at the bottom of the moving seat 701 of the clamping mechanism 7.

[0104] like Figure 5 , Figure 14 , Figure 15 , Figure 16 and Figure 17 As shown, the shifting mechanism 6 also includes a shifting positioning mechanism. The shifting positioning mechanism includes a positioning gear 609, a second locking plate 614, a second tension spring 619, a second tension transmission member 617, a second rotating pin 615, and a second connecting pin 616. The positioning gear 609 is fixedly connected to the shifting driven shaft 606 or the gear shaft 608. The second locking plate 614 is rotatably connected to the first base 401 mounted on the first base plate via the second rotating pin 615, and the end of the second locking plate 614 is used to mesh with the positioning gear 609. One end of the second tension spring 619 is rotatably connected to the first base 401, and the other end is connected to one end of the second tension transmission member 617. The other end of the second tension transmission member 617 is rotatably connected to the second locking plate 614 via the second connecting pin 616; the second rotating pin 615 is located between the second connecting pin 616 and the second tension spring 619. The second locking plate 614 also has two states: engaged and disengaged (see...). Figure 15 and Figure 17 Its working principle is similar to that of the first card plate 502, and will not be described in detail.

[0105] Furthermore, the shifting mechanism 6 also includes an automatic return mechanism. The automatic return mechanism includes a return spring 611, a stop block 613, a return lever 618, a lever 620, an intermediate connecting rod 621, and a swing rod 622. One end of the return spring 611 is connected to the first base 401, and the other end is connected to the movable seat 701. The stop block 613 is mounted on the movable seat 701, and its left and right positions are adjustable. The middle part of the return lever 618 is rotatably connected to the first base 401. The upper end of the return lever 618 is used to collide with the stop block 613, and the lower end of the return lever 618 is provided with a first gear tooth, which meshes with a second gear tooth at the outer edge of the second clamping plate 614. The middle part of the swing rod 622 is rotatably connected to the first base 401. The upper end of the swing rod 622 is used to collide with the moving seat 701, and the lower end is rotatably connected to one end of the intermediate connecting rod 621. The other end of the intermediate connecting rod 621 is rotatably connected to the lower end of the lever 620. The middle part of the lever 620 is rotatably connected to the first base 401, and the dial at the upper end of the lever 620 contacts the second locking plate 614.

[0106] The drilling method based on the above-mentioned axial and radial drilling fixture for the core column of the follow-up oil-gas distributor is as follows:

[0107] Before machining begins, preparatory work is performed. Adjust the flipping mechanism 4 to switch the tooling to radial hole machining mode or axial hole machining mode. Then, clamp the mandrel and adjust the position of the slide 303 so that the drill bit is aligned with the first machining position; adjust the horizontal position of the linkage rack 201 relative to the drill spindle to ensure that the linkage rack 201 can mesh with the first half gear 511 after moving down; at the same time, adjust the height of the linkage rack 201 so that when the drill bit moves down close to the workpiece, the indexing and shifting operations are completed. For radial drilling operations, the indexing driven gear 503 and the corresponding indexing driving gear 506 need to be selected according to the number of indexes. Tighten the indexing locking screw 507 on the selected indexing driving gear 506 so that the indexing driving gear 506 rotates with the indexing driving shaft 505. At the same time, loosen the indexing locking screws 507 on the other indexing driving gears 506 so that they are in a free state and do not rotate with the indexing driving shaft 505. Then, operate the indexing positioning mechanism corresponding to the selected indexing drive gear 506 to engage the first chuck 502 with the indexing driven gear 503, while simultaneously disengaging all other indexing positioning mechanisms. It is also necessary to select the shift drive gear 604 according to the shift distance, tighten the shift locking screw 603 on the selected shift drive gear 604, and loosen the other shift locking screws 603 to ensure that only the selected shift drive gear 604 can rotate with the shift drive shaft 602 and drive the shift driven shaft 606 to rotate by the corresponding angle. It is also necessary to adjust the position of the stop block 613 according to the axial machining range of the mandrel. If axial drilling is to be performed, it is not necessary to adjust the shift mechanism 6.

[0108] Then drilling begins:

[0109] like Figure 1 , Figure 7 and Figure 9 As shown, when in the radial hole machining state, the first base plate of the flipping mechanism 4 contacts the top surface of the slide 303 of the sliding platform 3. After adjusting the sliding platform 3 to bring the drill bit to the target position, the radial hole machining cycle is executed:

[0110] Step A1. In the initial state, the first half gear 511 of the indexing mechanism 5 and the second half gear 601 of the shifting mechanism 6 are both disengaged from the drive rack 209 of the follower drive device 2.

[0111] Step A2. The drill spindle moves downward, causing the follower drive device 2 to move downward as well. During the downward movement, the drive rack 209 meshes with the first half gear 511, causing the first half gear 511 to rotate more than 180 degrees. Then, under the action of the first indexing counterweight 512, it continues to rotate, completing a full rotation. This drives the indexing drive shaft 505 to rotate through the drive bevel gear 509 and the driven bevel gear 508. The selected indexing drive gear 506 in the indexing mechanism 5 drives the indexing driven gear 503 to rotate by an angle corresponding to one tooth, causing the mandrel held by the clamping mechanism 7 to rotate by a set angle to complete the indexing. At the same time, the drive rack 209 also meshes with the second half gear 601, causing the second half gear 601 to rotate more than 180 degrees. Then, under the action of the first shifting counterweight 610, it continues to rotate, completing a full rotation, thereby driving the selected shifting drive gear 604 to drive the shifting driven gear 605 to rotate, driving the clamping mechanism 7 and the clamped core column to move axially a set distance to complete the shift.

[0112] Step A3. After the drive rack 209 separates from the first half gear 511 and the second half gear 601, the drill spindle continues to move downward, and the drill bit performs radial drilling on the core column that has completed indexing and displacement.

[0113] Step A4. After drilling is completed, the drill spindle rises, driving the follower drive device 2 to rise. During the rising process, the first half gear 511 and the second half gear 601 rotate in opposite directions under the action of the drive rack 209. However, due to the existence of the tooth gap area, the angle of this reverse rotation is less than 90 degrees. After the drive rack 209 leaves, they automatically return to the center under the action of the first indexing counterweight 512 and the first shifting counterweight 610, respectively. During this process, the indexing drive gear 506 and the shifting drive gear 604 have not yet contacted the corresponding driven gears, and the power output ends of the indexing mechanism 5 and the shifting mechanism 6 will not move.

[0114] After the radial hole machining cycle is completed, the automatic return mechanism is activated: when the moving seat 701 moves to its maximum stroke, the contact block 613 triggers the return pry bar 618, which in turn causes the second clamping plate 614 to disengage from the positioning gear 609 (e.g., Figure 15 As shown), the return spring 611 then drives the clamping mechanism 7 to reset to the right. When the moving seat 701 returns to the starting position, it strikes the swing rod 622, and the swing rod 622 pushes the second clamping plate 614 to re-engage with the positioning gear 609 through the intermediate connecting rod 621 and the lever 620 (as shown). Figure 17 As shown in the diagram, this ensures that the clamping mechanism 7 stops accurately in the initial position. The entire return process is completed automatically without manual intervention.

[0115] When in the axial hole machining state, the second base plate of the flipping mechanism 4 contacts the top surface of the slide 303 of the sliding platform 3. After adjusting the sliding platform 3 to bring the drill bit to the target position, the axial hole machining cycle is executed:

[0116] Step B1. In the initial state, such as Figure 18 As shown, the first half gear 511 of the indexing mechanism 5 disengages from the drive rack 209 of the follower drive device 2.

[0117] Step B2. The drill spindle moves downward, driving the follower drive device 2 downward. During the downward movement, the drive rack 209 meshes with the first half gear 511, causing the first half gear 511 to rotate more than 180 degrees. Then, under the action of the first indexing counterweight 512, it continues to rotate, completing a full revolution, thereby driving the indexing mechanism 5 to work, causing the mandrel held by the clamping mechanism 7 to rotate by a set angle to complete the indexing.

[0118] Step B3. After the drive rack section 209 separates from the first half gear 511, as follows: Figure 19 As shown, the drill spindle continues to move downwards, and the drill bit performs axial drilling on the end face of the indexed core column.

[0119] Step B4. After drilling is completed, the drill spindle rises, driving the follower drive device 2 to rise. During the rising process, the first half gear 511 rotates in the opposite direction under the action of the drive rack 209. The angle of this reverse rotation is less than 90 degrees. After the drive rack 209 leaves, the first half gear 511 automatically returns to the center under the action of the first indexing counterweight 512. The power output end of the indexing mechanism 5 will not move.

[0120] It should be noted that, as will be apparent to those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics thereof. The scope of the present invention is defined by the claims rather than the foregoing description.

Claims

1. A follow-up oil-gas distributor core column axial and radial drilling fixture, comprising an indexing mechanism (5), characterized in that: It also includes a follow-up drive device (2), a sliding platform (3), a flipping mechanism (4), a shifting mechanism (6), and a clamping mechanism (7); The follow-up drive device (2) is fixedly installed on the lifting bushing (1) of the drill spindle, and the lower side of the follow-up drive device (2) is provided with a drive rack (209). The sliding platform (3) is used to be fixedly installed on the worktable of the drilling machine; The flipping mechanism (4) is mounted on the slide table (303) of the sliding platform (3) by a rotatable connection. The flipping mechanism (4) includes a first substrate and a second substrate that are perpendicular to each other. When the first substrate contacts the top surface of the slide table (303), the drilling tool is in the radial hole processing state. When the second substrate contacts the top of the slide table (303), the drilling tool is in the axial hole processing state. The indexing mechanism (5), the shifting mechanism (6), and the clamping mechanism (7) are all mounted on the first base plate; The clamping mechanism (7) is used to install the core being processed; The power input end of the indexing mechanism (5) is the first half gear (511), and the power output end is mechanically connected to the clamping mechanism (7) to drive the installed core column to rotate and index. The power input end of the shifting mechanism (6) is the second half gear (601), and the power output end is mechanically connected to the clamping mechanism (7) to drive the clamping mechanism (7) to translate along the axial direction of the core column; The first half gear (511) and the second half gear (601) are arranged vertically and are both used to mesh with the drive rack (209); The indexing mechanism (5) also includes a second base (501), an indexing drive shaft (505), and an indexing driven shaft (504). The second base (501) is mounted on the first base plate; the indexing drive shaft (505) and the indexing driven shaft (504) are arranged in parallel and are both mounted on the second base (501) by a rotatable connection. The first half gear (511) is rotatably configured relative to the second base (501) and is connected to the indexing drive shaft (505) for transmission. The indexing drive shaft (505) is provided with multiple indexing stations along the axial direction; each indexing station is equipped with an indexing drive gear (506) via a bearing, the indexing drive gear (506) is a single-tooth gear, and a third indexing counterweight (513) is also installed on the indexing drive gear (506); an indexing locking screw (507) is also installed on the indexing drive gear (506), the inner end of the indexing locking screw (507) is used to contact the indexing drive shaft (505); Multiple indexing driven gears (503) corresponding one-to-one with the indexing driving gear (506) are fixedly installed on the indexing driven shaft (504) along the axial direction. The indexing driving gear (506) and the corresponding indexing driven gear (503) are engaged, and the number of teeth of each indexing driven gear (503) is equal to the corresponding number of indexes. The indexing driven shaft (504) is the power output end of the indexing mechanism (5); The shifting mechanism (6) also includes a third base (607), a shifting drive shaft (602), and a shifting driven shaft (606). The third base (607) is mounted on the first base plate; the displacement drive shaft (602) and the displacement driven shaft (606) are arranged in parallel and are both mounted on the third base (607) by a rotatable connection. The second half gear (601) is rotatably configured relative to the third base (607) and is connected to the shifting drive shaft (602) for transmission. The shifting drive shaft (602) is provided with multiple shifting stations along the axial direction; each shifting station is equipped with a shifting drive gear (604) via a bearing. The shifting drive gear (604) is an incomplete gear, and the number of teeth of each shifting drive gear (604) is different; a second shifting counterweight (612) is also installed on the shifting drive gear (604); a shifting locking screw (603) is also installed on the shifting drive gear (604), and the inner end of the shifting locking screw (603) is used to contact the shifting drive shaft (602); A shift driven gear (605) is fixedly mounted on the shift driven shaft (606), and each shift driving gear (604) is engaged with the shift driven gear (605); The shift driven shaft (606) is fixedly connected to a gear shaft (608) which serves as the power output end of the shift mechanism (6). The clamping mechanism (7) includes a movable seat (701), and the gear shaft (608) meshes with the rack at the bottom of the movable seat (701). The clamping mechanism (7) includes a movable seat (701), a clamping tension spring (702), a pressure plate (703), a core column sleeve plate (707), an indexing bushing (705), a loose nut (706), a core column pressure head (704), and a positioning device; A first base (401) is mounted on the first substrate. The movable seat (701) is slidably connected to the first base (401) and mechanically connected to the power output end of the shifting mechanism (6). A dividing bushing (705) is mounted on the movable seat (701) by a rotatable connection. The dividing bushing (705) is used to slide and connect with the power output end of the dividing mechanism (5). The direction of the sliding connection is parallel to the rotation axis of the dividing bushing (705). The core column sleeve plate (707) is installed on the left end of the indexing bushing (705) by a loose nut (706). The left end of the core column sleeve plate (707) is used to cooperate with the right end of the core column being processed. The positioning device is provided between the indexing bushing (705) and the core column sleeve plate (707), and between the core column sleeve plate (707) and the core column being processed. The pressure plate (703) is slidably connected to the movable seat (701). A detachable core column pressure head (704) is installed on the pressure plate (703) through a bearing. The core column pressure head (704) is used to cooperate with the left end of the core column being processed. One end of the clamping tension spring (702) is connected to the pressure plate (703) and the other end is connected to the movable seat (701). It is used to pull the pressure plate (703) to move to the right.

2. The axial and radial drilling fixture for the core column of the follow-up oil-gas distributor as described in claim 1, characterized in that: The bottom of the first half gear (511) near the drive rack (209) is a tooth gap area; the lower part of the first half gear (511) is provided with a first indexing counterweight (512). The bottom of the second half gear (601) near the drive rack (209) is a tooth gap area; the lower part of the second half gear (601) is provided with a first displacement counterweight (610).

3. The axial and radial drilling fixture for the core column of the follow-up oil-gas distributor as described in claim 1, characterized in that: The indexing mechanism (5) also includes an indexing positioning mechanism that corresponds one-to-one with each indexing driven gear (503); The indexing and positioning mechanism includes a first clamping plate (502), a first tension spring (514), a first tension transmission component (515), a first rotating pin (516), and a first connecting pin (517). The middle part of the first card plate (502) is rotatably connected to the second base (501) through the first rotating pin (516), and the end of the first card plate (502) is used to mesh with the corresponding indexing driven gear (503); One end of the first tension spring (514) is rotatably connected to the second base (501), and the other end is connected to one end of the first tension transmission component (515). The other end of the first tension transmission component (515) is rotatably connected to the first clamping plate (502) through the first connecting pin (517). The first rotating pin (516) is located between the first connecting pin (517) and the first tension spring (514).

4. The axial and radial drilling fixture for the core column of the follow-up oil-gas distributor as described in claim 1, characterized in that: The shifting mechanism (6) further includes a shifting and positioning mechanism; The displacement and positioning mechanism includes a positioning gear (609), a second clamping plate (614), a second tension spring (619), a second tension transmission component (617), a second rotating pin (615), and a second connecting pin (616). The positioning gear (609) is fixedly connected to the displacement driven shaft (606) or the gear shaft (608); The second plate (614) is rotatably connected to the first base (401) mounted on the first base plate via the second rotating pin (615), and the end of the second plate (614) is used to mesh with the positioning gear (609); One end of the second tension spring (619) is rotatably connected to the first base (401), and the other end is connected to one end of the second tension transmission component (617). The other end of the second tension transmission component (617) is rotatably connected to the second clamping plate (614) through the second connecting pin (616). The second rotating pin (615) is located between the second connecting pin (616) and the second tension spring (619).

5. The axial and radial drilling fixture for the core column of the follow-up oil-gas distributor as described in claim 4, characterized in that: The shifting mechanism (6) also includes an automatic return mechanism, which includes a return spring (611), a stop block (613), a return lever (618), a lever (620), an intermediate connecting rod (621), and a swing rod (622). One end of the return spring (611) is connected to the first base (401), and the other end is connected to the movable base (701); The contact block (613) is mounted on the movable seat (701); the middle part of the return lever (618) is rotatably connected to the first base (401), the upper end of the return lever (618) is used to collide with the contact block (613), and the lower end of the return lever (618) is provided with a first tooth, which meshes with the second tooth at the outer edge of the second clamping plate (614); The middle part of the swing rod (622) is rotatably connected to the first base (401). The upper end of the swing rod (622) is used to collide with the moving seat (701), and the lower end is rotatably connected to one end of the intermediate connecting rod (621). The other end of the intermediate connecting rod (621) is rotatably connected to the lower end of the lever (620). The middle part of the lever (620) is rotatably connected to the first base (401), and the dial at the upper end of the lever (620) is in contact with the second card plate (614).

6. The axial and radial drilling fixture for the core column of the follow-up oil-gas distributor as described in claim 1, characterized in that: The follow-up drive device (2) includes a linkage rack (201), an adjustment slider (202), and a crossbar (203). The crossbeam (203) is horizontally set and fixed on the lifting bushing (1), and the crossbeam (203) is provided with a transverse adjustment rack (205). The horizontal groove on the adjusting slider (202) is in sliding engagement with the cross frame (203), and the vertical groove on the adjusting slider (202) is in sliding engagement with the vertical part of the linkage rack (201); The linkage rack (201) is provided with a vertical adjustment rack part (206) and a drive rack part (209). The adjusting slider (202) is also equipped with a transverse adjusting gear (204) that meshes with the transverse adjusting rack (205) and a vertical adjusting gear (207) that meshes with the vertical adjusting rack (206). The adjusting slider (202) is also equipped with two annular locking nuts (208), which are used to lock the horizontal adjusting gear (204) and the vertical adjusting gear (207) respectively.

7. A method for axial and radial drilling of a follow-up oil-gas distributor core column, characterized in that: This method is based on the axial and radial drilling fixture for the core column of the follow-up oil-gas distributor as described in claim 2; When in the radial hole machining state, the first base plate of the flipping mechanism (4) contacts the top surface of the slide (303) of the sliding platform (3). After adjusting the sliding platform (3) to make the drill reach the target position, the radial hole machining cycle is executed: Step A1. In the initial state, the first half gear (511) of the indexing mechanism (5) and the second half gear (601) of the shifting mechanism (6) are both disengaged from the drive rack (209) of the follower drive device (2); Step A2. The drill spindle moves down, causing the follower drive device (2) to move down; during the downward movement, the drive rack (209) meshes with the first half gear (511) to make the first half gear (511) rotate one revolution, driving the indexing mechanism (5) to work, and causing the mandrel held by the clamping mechanism (7) to rotate by a set angle to complete the indexing; the drive rack (209) also meshes with the second half gear (601) to make the second half gear (601) rotate one revolution, driving the shifting mechanism (6) to work, and causing the clamping mechanism (7) and the mandrel held by it to move axially by a set distance; Step A3. After the drive rack (209) separates from the first half gear (511) and the second half gear (601), the drill spindle continues to move downward, and the drill bit performs radial drilling on the core column that has been indexed and displaced. Step A4. After drilling is completed, the drill spindle rises, driving the follower drive device (2) to rise. During the rising process, the first half gear (511) and the second half gear (601) rotate in opposite directions under the action of the drive rack (209), and the angle of this reverse rotation is less than the preset angle to avoid triggering the indexing mechanism (5) and the shifting mechanism (6). After the first half gear (511) and the second half gear (601) are separated from the drive rack (209), they return to their initial state under the action of the first indexing counterweight (512) and the first shifting counterweight (610), respectively. When in the axial hole machining state, the second base plate of the flipping mechanism (4) contacts the top surface of the slide (303) of the sliding platform (3). After adjusting the sliding platform (3) to make the drill reach the target position, the axial hole machining cycle is executed: Step B1. In the initial state, the first half gear (511) of the indexing mechanism (5) disengages from the drive rack (209) of the follower drive device (2); Step B2. The drill spindle moves down, driving the follow-up drive device (2) to move down; during the downward movement, the drive rack (209) meshes with the first half gear (511) to make the first half gear (511) rotate one revolution, driving the indexing mechanism (5) to work, driving the core column held by the clamping mechanism (7) to rotate by a set angle to complete the indexing; Step B3. After the drive rack (209) separates from the first half gear (511), the drill spindle continues to move downward, and the drill bit performs axial drilling on the end face of the indexed core column; Step B4. After drilling is completed, the drill spindle rises, driving the follow-up drive device (2) to rise. During the rising process, the first half gear (511) rotates in the opposite direction under the action of the drive rack (209), and the angle of the reverse rotation is less than the preset angle to avoid triggering the indexing mechanism (5). After the first half gear (511) separates from the drive rack (209), it returns to its initial state under the action of the first indexing counterweight (512).

Images