CN115301976A

CN115301976A - Multi-shaft drilling device

Info

Publication number: CN115301976A
Application number: CN202211108143.5A
Authority: CN
Inventors: 陈文良; 沈立刚; 胡海龙; 付玉国; 刘新东
Original assignee: Guangzhou Wenchuan Heavy Industry Co ltd
Current assignee: Guangzhou Wenchuan Heavy Industry Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2022-11-08

Abstract

The invention relates to the technical field of machining, and particularly discloses a multi-shaft drilling device which comprises a driving motor, a multi-stage transmission mechanism, a universal joint assembly, a hole-entering drilling jig, a taper shank sleeve and a taper shank drill bit, wherein the multi-stage transmission mechanism is controlled by the driving motor, the universal joint assembly comprises a first universal joint and a second universal joint, the first universal joint is arranged at the bottom of the multi-stage transmission mechanism and controlled by the multi-stage transmission mechanism, and the first universal joint is connected with the second universal joint through a transmission rod; the manhole drill jig is of a closed-loop structure, a plurality of mounting holes are formed in the manhole drill jig at intervals along the circumferential direction of the manhole drill jig, and the second universal joint is rotatably arranged in the mounting holes; the taper shank is sleeved below the manhole drill jig and is connected with a second universal joint; the taper shank drill bit is clamped with the taper shank sleeve. The invention can shorten the time consumption of the drilling process of the marine manhole cover, improve the processing efficiency, avoid repeated line drawing correction during processing and improve the processing precision and the processing quality.

Description

Multi-shaft drilling device

Technical Field

The invention relates to the technical field of machining, in particular to a multi-shaft drilling device.

Background

The marine manhole cover is a standard outfitting piece necessary for ships, is mainly used for separating and sealing various functional cabins, and is convenient for opening personnel to enter the cabins for overhaul and the like. The size of the ship is different, and the number of the manhole covers is different, and for an example of 1900TEU container ships, each ship has about 160 sets of the manhole covers. Taking a manhole cover of type 600 × 400b as an example, 20 holes are formed in the seat plate and the cover plate, and the holes are fastened and connected through stainless steel bolts. The manufacturing of the manhole cover comprises the working procedures of blanking, assembling, drilling, welding, coating and the like. The key procedure in these procedures is drilling, the precision requirement for the hole site is high during drilling, and the form and position tolerance of each two holes cannot be larger than 0.2mm. There are two ways to drill a conventional manhole cover: one is drilling by a radial drill, because each manhole cover seat plate and each manhole cover hole are drawn, an error larger than 0.2mm is easy to generate, and the radial drill takes at least twenty minutes to process one set of manhole cover drilling; the second is to adopt numerically-controlled drilling machine, and this mode can reduce the time of artifical drawing hole bit line and the error that causes, consequently generally adopts numerically-controlled drilling machine to carry out drilling processing now, but adopts numerically-controlled drilling machine to process the time of one set of manhole cover and still surpass ten minutes, and numerically-controlled drilling machine is higher to workman's operation technical requirement.

Therefore, there is a need to develop a drilling apparatus for solving the problems of low processing precision, long time-consuming process and low processing efficiency of the conventional drilling method.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: how to solve the problem that the machining precision that exists of traditional drilling mode is low, the process is consuming time long and machining efficiency is low.

In order to solve the above technical problem, the present invention provides a multi-axis drilling apparatus, including:

the driving motor is used for providing power for the multi-shaft drilling device;

the multi-stage transmission mechanism is controlled by the driving motor;

the universal joint assembly comprises a first universal joint and a second universal joint, the first universal joint is arranged at the bottom of the multi-stage transmission mechanism and controlled by the multi-stage transmission mechanism, and the first universal joint is connected with the second universal joint through a transmission rod;

the hole-entering drill jig is of a closed-loop structure and is provided with a plurality of mounting holes at intervals along the circumferential direction, and the second universal joint is rotatably arranged in the mounting holes;

the taper shank sleeve is arranged below the manhole drill jig and is connected with the second universal joint; and

the taper shank drill bit is clamped with the taper shank sleeve.

Further preferably, the multistage transmission mechanism comprises a first transmission case, a second transmission case and a third transmission case from top to bottom in sequence;

a first cavity is arranged in the first transmission box, a first-stage transmission assembly is arranged in the first cavity, and the first-stage transmission assembly is controlled by the driving motor;

a second cavity is arranged in the second transmission box, a second-stage transmission assembly is arranged in the second cavity, and the second-stage transmission assembly is controlled by the first-stage transmission assembly;

and a third cavity is arranged in the third transmission box, a third-stage transmission assembly is arranged in the third cavity, the third-stage transmission assembly is controlled by the second-stage transmission assembly, and the first universal joint is controlled by the third-stage transmission assembly.

Further preferably, the first stage transmission assembly comprises:

the driving shaft is controlled by the driving motor and is rotatably installed on the first transmission box through a deep groove ball bearing, a driving gear is arranged on the driving shaft, and the driving gear is arranged in the first cavity; and

the first driven shaft is sequentially connected with the first transmission box, the second transmission box and the third transmission box in a penetrating mode, a first driven gear meshed with the driving gear is arranged on the first driven shaft, and the first driven gear is arranged in the first cavity.

Further preferably, the second stage transmission assembly comprises:

the second driven gear is arranged in the second cavity and is sleeved on the first driven shaft; and

the second driven shaft penetrates through the second transmission box and the third transmission box, a third driven gear is arranged on the second driven shaft, and the third driven gear is meshed with the second driven gear.

Further preferably, the tertiary transmission assembly includes:

the fourth driven gear is arranged in the third cavity and is coaxially connected with the first driven shaft;

a fifth driven gear disposed in the third cavity and coaxially connected to the second driven shaft, an

The third driven shaft is arranged in the third cavity, a sixth driven gear is arranged on the third driven shaft, the sixth driven gear is meshed with the fourth driven gear or the fifth driven gear, and the first universal joint is controlled by the sixth driven gear.

Further preferably, an oil filling hole is formed in the first transmission case, an oil filling sealing plate is arranged on the oil filling hole, and an oil guide channel is arranged among the first cavity, the second cavity and the third cavity.

Further preferably, the apparatus further comprises:

the input end of the speed reducer is connected with the output end of the driving motor; and

the connecting mechanism comprises a connecting sleeve and a coupler arranged in the connecting sleeve, the coupler is connected with the output end of the speed reducer, and the first-stage transmission assembly is connected with the coupler.

Further preferably, the number of the mounting holes on the manhole drill jig is at least 20, and the number of the universal joint assemblies corresponds to the number of the mounting holes.

Further preferably, the manhole drill jig is made of Q355D steel and has a thickness of 80-120 mm.

Further preferably, the manhole drill jig is in a static state during machining.

Compared with the prior art, the multi-shaft drilling device provided by the invention has the beneficial effects that:

according to the invention, the manhole drilling jig is set to be in a closed-loop structure, the plurality of mounting holes are circumferentially arranged at intervals along the manhole drilling jig, so that the taper shank sleeve and the taper shank drill bit can be arranged according to the positions of the mounting holes, and the rotation of the taper shank sleeve and the taper shank drill bit is controlled by the universal joint assembly, when the driving motor works, the driving motor can drive the plurality of taper shank drill bits to simultaneously drill holes through the multi-stage transmission mechanism and the universal joint assembly, so that the plurality of taper shank drill bits can simultaneously drill the manhole cover in one step, further, the efficiency of the drilling process of the ship manhole cover is greatly improved, taking a 600 × 400B manhole cover as an example, as 20 holes are formed in the seat plate and the cover plate of the manhole cover, therefore, the manhole drilling jig is provided with 20 mounting holes corresponding to the hole positions required to be formed on the manhole cover, so that the 20 taper shank drill bits can be simultaneously mounted, after drilling can be formed on the manhole cover in one step, multiple line drawing and alignment processing can be avoided, the time consumption is shortened, the processing process is improved, the processing efficiency is improved, the technical requirements on the hole positions of workers are also reduced, and the drilling jig is matched with the mounting holes required by the mounting holes, and the drilling jig, the processing precision can be repeatedly corrected, and the processing quality can be improved.

Drawings

Fig. 1 is a schematic structural diagram of a multi-axis drilling device according to the invention.

Fig. 2 isbase:Sub>A cross-sectional view of sectionbase:Sub>A-base:Sub>A of fig. 1 of the present invention.

Fig. 3 is an enlarged view of a portion of fig. 2 of the present invention.

Figure 4 is a top view of the manway jig of the present invention.

In the figure, 100, a multi-axis drilling apparatus; 11. a drive motor; 12. a speed reducer; 13. a connecting mechanism; 131. connecting sleeves; 132. a coupling; 14. a multi-stage transmission mechanism; 141. a first transmission case; 1411. an oil filler hole; 142. a second transmission case; 143. a third transmission case; 144. a first cavity; 145. a first stage transmission assembly; 1451. a drive shaft; 1452. a driving gear; 1453. a first driven shaft; 1454. a first driven gear; 146. a second cavity; 147. a second stage transmission assembly; 1471. a second driven gear; 1472. a second driven shaft; 1473. a third driven gear; 148. a third cavity; 149. a third stage transmission assembly; 1491. a fourth driven gear; 1492. a third driven shaft; 1493. a sixth driven gear; 1494. a fifth driven gear; 15. a gimbal assembly; 151. a first universal joint; 152. a transmission rod; 153. a second universal joint; 16. drilling a mould into the hole; 161. mounting holes; 17. a taper shank sleeve; 18. a taper shank drill bit.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "between", "inner", "outer", "end", "input", "output", etc., used herein are used for indicating orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

The terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" is used for descriptive purposes only and means that the number may be 2, 8230, 10, 8230, 20, 8230, 30 or more, which number is determined according to the hole site required for the actual manhole cover and thus should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment, for example, a 600 × 400b manhole cover is processed, and 20 holes need to be drilled in both the seat plate and the cover plate of the manhole cover.

As shown in fig. 1, the present invention provides a multi-axis drilling apparatus, where the multi-axis drilling apparatus 100 includes a driving motor 11, a multi-stage transmission mechanism 14, a universal joint assembly 15, an manhole drilling jig 16, a taper shank sleeve 17, and a taper shank drill bit 18, where the driving motor 11 is used as a power source of the apparatus, and controls the taper shank drill bit 18 to rotate through the multi-stage transmission mechanism 14 and the universal joint assembly 15, so as to implement one-step forming drilling of a manhole cover by multiple taper shank drill bits 18 at the same time, thereby greatly improving the efficiency of a drilling process of a manhole cover for a ship.

Referring to fig. 1 and 4, in some examples of the present invention, for processing a 600 × 400b manhole cover, as 20 holes are formed in both a seat plate and a cover plate of the manhole cover, for this reason, the manhole drilling jig 16 is set to be a closed loop structure and 20 installation holes 161 are circumferentially arranged along the circumferential direction at intervals, the manhole drilling jig 16 is set to be a closed loop structure and can correspond to the shape of the manhole cover, and at the same time, the installation holes 161 can correspond to the hole positions required to be formed on the manhole cover, and 20 taper shank drills 18 can be formed into 20 drilled holes at one time on the manhole cover at the same time during drilling, so that the defect that the processing can be performed after line drawing and correction is required before each drilled hole is avoided, thereby shortening the time consumption of the drilling process, improving the processing efficiency, and also reducing the technical requirements on workers.

Referring to fig. 2, in some examples of the present invention, because the size of the manhole drill jig 16 is relatively large, if the taper shank drill 18 is directly driven by a shaft transmission manner, the multi-stage transmission mechanism 14 also becomes large, which not only increases the cost of the equipment, but also is heavy due to the large size, which is not beneficial for the operation of a technician, and therefore, the universal joint assembly 15 is used as a transmission manner to avoid the above-mentioned disadvantages; specifically, the universal joint assembly 15 includes a first universal joint 151 and a second universal joint 153, the second universal joint 153 is rotatably disposed in the mounting hole 161, the first universal joint 151 is disposed at the bottom of the multi-stage transmission mechanism 14 and controlled by the multi-stage transmission mechanism 14, the first universal joint 151 and the second universal joint 153 are connected through a transmission rod 152, the taper shank sleeve 17 is disposed below the manhole drill jig 16 and connected with the second universal joint 153, and the taper shank drill bit 18 and the taper shank sleeve 17 are clamped with each other; the transmission rod 152 is adopted for transmission, so that the first universal joint 151 and the second universal joint 153 which are connected with each other can be not on the same straight line, thereby reducing the volume of the multistage transmission mechanism 14, leading the structure to be more compact, reducing the cost of the equipment and improving the flexibility and operability of the equipment.

As will be understood from fig. 2, in some examples of the present invention, since 20 taper-shank drill bits 18 are provided on the manhole drill jig 16, in order to ensure that the universal joint assembly 15 can transmit the power of the driving motor 11 to the taper-shank drill bits 18 at the same time, a multi-stage transmission mechanism 14 is provided for distributing the power, and in order to ensure that the 20 taper-shank drill bits 18 can rotate at the same time, the multi-stage transmission mechanism 14 is provided as a first transmission case 141, a second transmission case 142 and a third transmission case 143 which are stacked in sequence from top to bottom; in order to realize power transmission, a first cavity 144 is arranged in the first transmission case 141, a first-stage transmission assembly 145 is arranged in the first cavity 144, and the first-stage transmission assembly 145 is controlled by the driving motor 11; a second cavity 146 is arranged in the second transmission case 142, a second-stage transmission assembly 147 is arranged in the second cavity 146, and the second-stage transmission assembly 147 is controlled by the first-stage transmission assembly 145; a third cavity 148 is arranged in the third transmission case 143, a third stage transmission assembly 149 is arranged in the third cavity 148, the third stage transmission assembly 149 is controlled by the second stage transmission assembly 147, and the first universal joint 151 is controlled by the third stage transmission assembly 149; it can be seen that when the driving motor 11 works, the power is gradually transmitted from the first stage transmission assembly 145 to the second stage transmission assembly 147 and then to the third stage transmission assembly 149, so as to simultaneously drive the 20 first universal joints 151 to simultaneously rotate, thereby ensuring that the 20 taper shank drill bits 18 simultaneously drill the manhole cover in one-step forming, shortening the time consumption of the drilling process, and improving the processing efficiency.

In some examples of the present invention, as shown in fig. 3, the first stage transmission assembly 145 includes a driving shaft 1451 and a first driven shaft 1453, further, the driving shaft 1451 is controlled by the driving motor 11, the driving shaft 1451 is rotatably mounted on the first transmission case 141 through a deep groove ball bearing, a driving gear 1452 is disposed on the driving shaft 1451, and the driving gear 1452 is disposed in the first cavity 144; the first driven shaft 1453 is sequentially connected to the first transmission case 141, the second transmission case 142 and the third transmission case 143 in a penetrating manner, a first driven gear 1454 engaged with the driving gear 1452 is arranged on the first driven shaft 1453, and the first driven gear 1454 is arranged in the first cavity 144; when the driving motor 11 is operated, the driving shaft 1451 rotates, the driving gear 1452 follows the driving shaft 1451, and when the driving gear 1452 rotates, the first driven gear 1453 is driven by the first driven gear 1454 to transmit power to a next stage, and the first driven shaft 1453 may be provided with a plurality of gears for transmitting power in a distributed manner.

In some examples of the invention, as shown in fig. 3, the second stage transmission assembly 147 includes a second driven gear 1471 and a second driven shaft 1472, further, the second driven gear 1471 is disposed in the second cavity 146 and is sleeved on the first driven shaft 1453; the second driven shaft 1472 penetrates through the second transmission box 142 and the third transmission box 143, a third driven gear 1473 is arranged on the second driven shaft 1472, the third driven gear 1473 is meshed with the second driven gear 1471, and as the first driven shaft 1453 is sequentially penetrated through the first transmission box 141, the second transmission box 142 and the third transmission box 143, when the first driven shaft 1453 rotates, the second driven gear 1471 is driven to rotate, and then the third driven gear 1473 drives the second driven shaft 1472 to rotate, so that power is further dispersed and transmitted, and the next stage can simultaneously drive 20 taper shank drill bits 18.

In some examples of the present invention, as shown in fig. 3, third stage transmission assembly 149 includes a fourth driven gear 1491, a fifth driven gear 1494 and a third driven shaft 1492, and further, fourth driven gear 1491 is disposed in third cavity 148 and is coaxially connected with first driven shaft 1453; the fifth driven gear 1494 is arranged in the third cavity 148 and is coaxially connected with the second driven shaft 1472, the third driven shaft 1492 is arranged in the third cavity 148, a sixth driven gear 1493 is arranged on the third driven shaft 1492, the sixth driven gear 1493 is meshed with the fourth driven gear 1491 or the fifth driven gear 1494, the first universal joint 151 is controlled by the sixth driven gear 1493, the first driven shaft 1453 rotates to drive the fourth driven gear 1491 to rotate, the second driven shaft 1472 rotates to drive the fifth driven gear 1494 to rotate, the sixth driven gear 1493 is meshed with the fourth driven gear 1491 or the fifth driven gear 1494 to rotate, so as to drive the third driven shaft 1492 to rotate, further to drive 20 first universal joints 151 to rotate simultaneously, 20 holes can be formed on the manhole cover at one time after drilling, and multiple line drawing alignment machining can be avoided, the drilling process is shortened, the machining efficiency is improved, and the time consumption is reduced.

In some examples of the present invention, as shown in fig. 3, in order to ensure the lubrication engagement between the gears, an oil filling hole 1411 for adding gear oil is required to be formed in the first transmission case 141, the gear oil is an important lubricating oil prepared by adding an extreme pressure anti-wear agent and an oiliness agent, and is used for various gear transmissions, wherein the oil filling hole 1411 is provided with an oil filling closing plate, and oil guide channels are formed among the first cavity 144, the second cavity 146, and the third cavity 148 to prevent the wear, the scuffing, the sintering, etc. of the gear surfaces, prolong the service life, and improve the transmission power efficiency.

In some examples of the present invention, as shown in fig. 1 and 2, the multi-axis drilling apparatus 100 further includes a speed reducer 12 and a connection mechanism 13, in addition to a driving motor 11, a multi-stage transmission mechanism 14, a universal joint assembly 15, an inlet hole drilling jig 16, a taper shank sleeve 17 and a taper shank drill bit 18, wherein an input end of the speed reducer 12 is connected with an output end of the driving motor 11; the connecting mechanism 13 comprises a connecting sleeve 131 and a coupler 132 arranged in the connecting sleeve 131, the coupler 132 is connected with the output end of the speed reducer 12, the first-stage transmission assembly 145 is connected with the coupler 132, the speed reducer 12 is a mechanical part which is used for matching the rotating speed and transmitting the torque between the driving motor 11 and the connecting mechanism 13, the coupler 132 is used for connecting an output shaft of the speed reducer 12 and a driving shaft 1451 to enable the output shaft and the driving shaft 1451 to rotate together to transmit the torque, and in the high-speed and heavy-load power transmission, the coupler also has the effects of buffering, damping and improving the dynamic performance of a shafting, so that the vibration generated when the device is processed is ensured, and the drilling precision is improved.

In other examples of the present invention, the manhole drill jig 16 is made of Q355D steel and has a thickness of 80 to 120mm, preferably 100mm, so as to avoid vibration and deformation of the manhole drill jig 16 during drilling and avoid affecting the accuracy of the hole.

In other examples of the present invention, since the taper shank drill bit 18 moves up and down simultaneously during the high-speed rotation, it is difficult to ensure the processing precision, therefore, the manhole drilling jig 16 is in a static state during the processing, so that the taper shank drill bit 18 does not generate vertical displacement during the work, during the drilling, the processing workpiece (manhole cover plate, seat plate) is fixed on the processing platform, the platform moves up and down according to the controlled program, the workpiece moves to actively contact the taper shank drill bit 18, thereby completing the drilling of the component, ensuring the drilling precision and efficiency, and ensuring the deviation within 0.2mm.

The working process of the invention is as follows: when drilling, the driving motor 11 is started first, the driving motor 11 matches the rotation speed and transmits the torque to the coupler 132 through the speed reducer 12, the driving shaft 1451 is driven to rotate by the coupler 132, the driving gear 1452 follows the driving shaft 1451, when the driving gear 1452 rotates, the first driven gear 1453 is driven by the first driven gear 1454, so that the power is transmitted to the next stage, because the first driven shaft 1453 is sequentially connected to the first transmission box 141, the second transmission box 142 and the third transmission box 143 in a penetrating manner, when the driving gear 1452 rotates, the second driven gear 1471 is driven to rotate, the second driven shaft 1472 is driven to rotate by the third driven gear 1473, further the power is transmitted in a dispersing manner, so that the next stage can simultaneously drive 20 taper shank bits 18, the first universal joint 151 is controlled by the sixth driven gear 1493, the first driven shaft 1453 rotates to drive the fourth driven gear 1491 to rotate, the second driven shaft 1492 rotates to drive the fifth driven gear 1494 to rotate, the sixth driven gear 1493 is connected with the fourth driven gear 1491 or the fifth driven gear 1492, and the third driven shaft 14917 rotates, and the third driven shaft 1492 rotates to drive the taper shank connector 14917 to rotate simultaneously.

In summary, the embodiment of the present invention provides a multi-axis drilling apparatus, in the present invention, an entry hole drilling jig 16 is set to be a closed loop structure, and a plurality of mounting holes 161 are circumferentially arranged along the circumferential direction at intervals, so that a taper shank sleeve 17 and a taper shank drill bit 18 can be arranged according to the positions of the mounting holes 161, and the rotation of the taper shank sleeve 17 and the taper shank drill bit 18 is controlled by a universal joint assembly 15, so that a driving motor 11 can simultaneously drive the plurality of taper shank drill bits 18 through a multi-stage transmission mechanism 14 and the universal joint assembly 15 to perform a drilling operation, thereby realizing one-step forming and drilling of a manhole cover by the plurality of taper shank drill bits 18 at the same time, further greatly improving the efficiency of a drilling process of a marine manhole cover, and simultaneously avoiding multiple line drawing and alignment processing, shortening the time consumption of the drilling process, improving the processing efficiency, and also reducing technical requirements on hole sites, and because the mounting holes 161 on the entry hole drilling jig 16 are matched with the manhole cover required by a human, a one-step forming can be performed without repeated line drawing and correction during processing, thereby improving the processing precision and the processing quality.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention. Having shown and described the basic principles, essential features and advantages of the invention, it will be apparent to those skilled in the art that it is not restricted to the details of the preferred embodiments described above, which are to be regarded as illustrative rather than restrictive, the scope of the invention being defined by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A multi-axis drilling apparatus, comprising:

the multi-stage transmission mechanism is controlled by the driving motor;

the taper shank drill bit is clamped with the taper shank sleeve.

2. The multi-shaft drilling device as claimed in claim 1, wherein the multi-stage transmission mechanism comprises a first transmission case, a second transmission case and a third transmission case in sequence from top to bottom;

3. Multi-axis drilling apparatus according to claim 2 wherein the first stage transmission assembly comprises:

4. Multiaxis drilling device as claimed in claim 3 wherein the second stage transmission assembly comprises:

5. Multiaxis drilling device as claimed in claim 4 wherein the tertiary drive assembly comprises:

a fifth driven gear disposed in the third cavity and coaxially connected with the second driven shaft, an

6. The multi-shaft drilling device as claimed in claim 2, wherein the first transmission case is provided with an oil hole, the oil hole is provided with an oil sealing plate, and oil guide passages are arranged among the first cavity, the second cavity and the third cavity.

7. Multiaxial drilling apparatus according to claim 2 wherein the apparatus further includes:

8. The multi-axis drilling apparatus as claimed in claim 1, wherein the number of mounting holes on the manway jig is at least 20, and the number of gimbal assemblies corresponds to the number of mounting holes.

9. The multi-axis drilling apparatus as claimed in claim 8, wherein the hole entering jig is made of Q355D steel and has a thickness of 80-120 mm.

10. Multiaxial drilling apparatus according to claim 9 wherein the manway jig is stationary during machining.