A special drilling rig for drilling domed structures

Abstract

The present invention is applicable to the technical field of special processing equipment, and provides a special drilling machine for drilling dome-shaped structures, including: a drill body installed on a rotary cantilever, and the drill body is controlled by the rotary cantilever to move axially forward and backward; a rotary cantilever, one end of the rotary cantilever is installed on a rotary drive platform to realize circular motion around the rotary drive platform; a rotary drive platform installed on the ground, and the rotary drive platform is used to provide power for the rotary cantilever to rotate; a track installed on the ground, and the other end of the rotary cantilever is installed on the track; a bracket installed on the ground. The present invention performs precise drilling on the inside of a dome-shaped structure based on polar coordinate motion; a new processing idea is proposed for the processing of axial blind holes inside structures such as tank turrets, and it has the characteristics of high processing accuracy, simple operation, and high automation.

Description

Technical Field

[0001] The present invention belongs to the technical field of special processing equipment, and particularly relates to a special drilling machine for drilling domed structures. Background Art

[0002] In modern society, with the rapid development of social production and material and cultural life, there have emerged increasingly complex mechanical configurations. Due to their special properties, these configurations require corresponding special machine tools for special processing operations. One common complex configuration is the domed structure, and a typical example is the tank turret. For such structures, a variety of complex equipment is installed inside, and special drilling and threading operations are required. In this processing environment, the processing of blind holes has the characteristics of high processing accuracy requirements, large weight of the product to be processed itself, and complex processing environment.

[0003] For a long time, to address these technical problems, manual processing by skilled workers has usually been relied upon. This method has a low degree of automation and requires a very high personal production level of the production line workers. In some other processing environments, the development team modified the side of the bracket loaded with the domed structure and produced a precision drilling machine, but it can only move based on the Cartesian coordinate system, and has disadvantages such as inconvenient axial drilling, low accuracy, and complex operation. Therefore, we propose a special drilling machine for drilling domed structures. Summary of the Invention

[0004] The purpose of the present invention is to provide a special drilling machine for drilling domed structures, aiming to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A special drilling machine for drilling domed structures, comprising:

[0007] A drilling machine body, installed on a rotary cantilever, and the drilling machine body is controlled by the rotary cantilever to move back and forth axially;

[0008] A rotary cantilever, one end of the rotary cantilever is installed on a rotary drive platform to achieve circular motion around the rotary drive platform;

[0009] A rotary drive platform, installed on the ground, and the rotary drive platform is used to provide the power for the rotary cantilever to rotate;

[0010] A track, installed on the ground, and the other end of the rotary cantilever is installed on the track;

[0011] A bracket, installed on the ground.

[0012] Further, the drilling machine body includes:

[0013] The power head is installed on the inner drilling rig body. The power head connects the drill bit and the screw drill through a Morse taper.

[0014] The inner drilling rig body is slidably installed in the outer drilling rig body. The inner drilling rig body is used to provide power for the power head and is used for self-locking when moving up and down in the outer drilling rig body.

[0015] The outer drilling rig body is slidably installed on the slewing cantilever. The outer drilling rig body is used to provide power for the up and down movement of the inner drilling rig body.

[0016] The control console is installed on the outer drilling rig body.

[0017] Furthermore, the inner drilling rig body includes:

[0018] The first motor is installed on the outer shell of the inner drilling rig. The first motor is used to provide power for the power head.

[0019] The outer shell of the inner drilling rig. A dovetail groove track one is provided on the outer shell of the inner drilling rig. The inner drilling rig body moves up and down in the outer drilling rig body along the dovetail groove track one. A first screw rod seat and a second screw rod seat are installed on the outer shell of the inner drilling rig.

[0020] The self-locking device is installed on the lower side of the outer shell of the inner drilling rig. The self-locking device is used to lock the position of the inner drilling rig body.

[0021] The first bevel gear is installed in the outer drilling rig body. A threaded rod is fixedly connected to the first bevel gear. The first screw rod seat and the second screw rod seat are threadedly connected to the threaded rod.

[0022] Furthermore, the self-locking device includes:

[0023] The stepping motor is installed on the lower surface of the outer shell of the inner drilling rig.

[0024] The cam is installed on the stepping motor. The cam is driven by the stepping motor to operate.

[0025] The self-locking block is slidably arranged in the outer shell of the inner drilling rig. The cam contacts the self-locking block.

[0026] Furthermore, the outer drilling rig body includes:

[0027] The outer shell of the outer drilling rig. Threaded holes are provided on the outer shell of the outer drilling rig.

[0028] The second motor is installed on the outer shell of the outer drilling rig. The second motor is connected to the second bevel gear through a motor rod.

[0029] The motor rod. The other end of the motor rod is installed on the outer shell of the outer drilling rig through a bearing and a first bearing seat.

[0030] Bevel gear two, and the bevel gear two is meshed and connected with the bevel gear one.

[0031] Furthermore, the slewing cantilever includes:

[0032] A cantilever body, one end of the cantilever body is installed on the slewing drive platform, the other end of the cantilever body is connected with a track wheel through a support beam, and the track wheel is installed on the track; a dovetail groove track two is arranged on the cantilever body, and the drilling machine body moves axially back and forth along the dovetail groove track two;

[0033] A bearing block two, which is fixed on the cantilever body;

[0034] A ball screw, one end of the ball screw passes through a threaded hole and is connected with a motor three, and the other end of the ball screw is connected with the bearing block two;

[0035] A motor three, which is installed on the cantilever body and is used to drive the ball screw.

[0036] Furthermore, the slewing drive platform includes:

[0037] A ball bearing, an upper connecting flange, a gear shaft and a lower connecting bearing flange; and

[0038] A worm, which is installed on the drive platform housing, and the worm is connected with a servo motor;

[0039] A gear, which is installed on the drive platform housing, the gear is meshed and connected with the worm, the gear is connected with the ball bearing, the upper connecting flange and the lower connecting bearing flange through the gear shaft, and one end of the cantilever body is installed on the gear shaft;

[0040] An electric control box, which is installed on the drive platform housing;

[0041] A servo motor, which is installed on the drive platform housing, the drive platform housing is installed on the floor, and the floor is installed on the ground through anchor bolts.

[0042] Compared with the prior art, the beneficial effects of the present invention are:

[0043] This special drilling machine for drilling in a dome-shaped structure performs precise drilling on the inside of the dome-shaped structure based on the movement in polar coordinates; it puts forward a new processing idea for the processing of axial blind holes inside structures such as tank turrets, and has the characteristics of high processing accuracy, simple operation and high automation; it takes into account the special requirements of the dome-shaped structure and realizes the high-precision processing of blind holes. Description of the Drawings

[0044] Figure 1 It is an axonometric view of the present invention.

[0045] Figure 2 It is an axonometric view of the drilling machine body of the present invention.

[0046] Figure 3 This is the front view of the drill body of the present invention.

[0047] Figure 4 This is the sectional view of the drill body of the present invention.

[0048] Figure 5 This is the schematic structural diagram of the self-locking device of the present invention.

[0049] Figure 6 This is the front view of the present invention.

[0050] Figure 7 This is the axonometric view of the rotary drive table of the present invention.

[0051] Figure 8 This is the front view of the rotary drive table of the present invention.

[0052] Figure 9 This is the schematic diagram of the working process of the present invention.

[0053] Figure 10 This is the processing schematic diagram of the present invention.

[0054] In the figure: drill body 100, power head 110, inner drill body 120, motor one 121, inner drill housing 122, self-locking device 123, stepper motor 1231, cam 1232, self-locking block 1233, dovetail groove track one 124, threaded rod 125, screw base one 126, screw base two 127, bevel gear one 128, outer drill body 130, bearing seat one 131, outer drill housing 132, motor two 133, bearing 134, motor rod 135, bevel gear two 136, threaded hole 137, control console 140, rotary cantilever 200, cantilever body 201, bearing seat two 202, ball screw 203, dovetail groove track two 204, motor three 205, rotary drive table 300, worm 301, gear 302, electric control box 303, servo motor 304, ball bearing 305, upper connecting flange 306, drive table housing 307, gear shaft 308, lower connecting bearing flange 309, floor 3010, track 400, bracket 500. Specific embodiments

[0055] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0057] As Figure 1As shown in the figure, a special drilling rig for dome-shaped structures provided by an embodiment of the present invention includes:

[0058] The drilling machine body 100 is installed on the rotary cantilever 200, and the axial front-back movement of the drilling machine body 100 is controlled by the rotary cantilever 200;

[0059] The rotary cantilever 200, one end of the rotary cantilever 200 is installed on the rotary drive platform 300 to realize circumferential movement around the rotary drive platform 300;

[0060] The rotary drive platform 300 is installed on the ground, and the rotary drive platform 300 is used to provide the power for the rotary cantilever 200 to rotate;

[0061] The track 400 is installed on the ground, and the other end of the rotary cantilever 200 is installed on the track 400;

[0062] The support 500 is installed on the ground.

[0063] In the embodiment of the present invention, preferably, the to-be-processed dome-shaped structure is placed on the support 500, and the rotary drive platform 300, the track 400, and the support 500 are all installed on the ground through anchor bolts. One end of the rotary cantilever 200 is installed on the rotary drive platform 300, and the other end of the rotary cantilever 200 is installed on the track 400, which improves the stability of movement and increases the overall drilling accuracy of the equipment. At the same time, the axial front-back movement of the drilling machine body 100 can be adjusted. The rotary drive platform 300 can simultaneously realize the functions of rapid rotation and accurate circumferential swing angle positioning.

[0064] As Figure 2 shown, as a preferred embodiment of the present invention, the drilling machine body 100 includes:

[0065] The power head 110 is installed on the inner drilling machine body 120, and the power head 110 connects the drill bit and the screw drill through a Morse taper;

[0066] The inner drilling machine body 120 is slidably installed in the outer drilling machine body 130. The inner drilling machine body 120 is used to provide power for the power head 110 and is used for self-locking when moving up and down in the outer drilling machine body 130;

[0067] The outer drilling machine body 130 is slidably installed on the rotary cantilever 200. The outer drilling machine body 130 is used to provide power for the up and down movement of the inner drilling machine body 120;

[0068] The control console 140 is installed on the outer drilling machine body 130.

[0069] In an embodiment of the present invention, preferably, the power head 110 connects the drill bit and the screw drill through a Morse taper to achieve drilling of the dome-shaped structure to be machined; the height of the power head 110 can be adjusted. When the inner drilling machine body 120 moves up and down in the outer drilling machine body 130, it drives the power head 110 to move up and down, thereby adjusting the height of the power head 110; the inner drilling machine body 120 has a function of self-locking when moving up and down in the outer drilling machine body 130. The outer drilling machine body 130 can move back and forth axially on the rotary cantilever 200. The console 140 is installed on the outer drilling machine body 130 through bolts and is used to control the movement of each motor of the overall equipment, having a good man-machine relationship, and finally achieving precise drilling.

[0070] As Figures 3 - 5 shown, as a preferred embodiment of the present invention, the inner drilling machine body 120 includes:

[0071] Motor 121, installed on the inner drilling machine housing 122, and the motor 121 is used to provide power for the power head 110;

[0072] Inner drilling machine housing 122, on which a dovetail groove track 124 is provided, and the inner drilling machine body 120 moves up and down in the outer drilling machine body 130 along the dovetail groove track 124, and a screw seat 126 and a screw seat 127 are installed on the inner drilling machine housing 122;

[0073] Self-locking device 123, installed on the lower side of the inner drilling machine housing 122, and the self-locking device 123 is used to lock the position of the inner drilling machine body 120;

[0074] Bevel gear 128, installed inside the outer drilling machine body 130, a threaded rod 125 is fixedly connected to the bevel gear 128, and the screw seat 126 and the screw seat 127 are threadedly connected to the threaded rod 125.

[0075] In an embodiment of the present invention, preferably, the self-locking device 123 can lock itself when the inner drilling machine body 120 reaches a predetermined position, so as to fix the drilling machine body 100 and improve the machining accuracy. The bevel gear 128 is connected to the corresponding structure of the outer drilling machine body 130. When the bevel gear 128 rotates, it can drive the screw seat 126 and the screw seat 127 to move up and down along the threaded rod 125 and the dovetail groove track 124, thereby driving the inner drilling machine body 120 to move up and down in the outer drilling machine body 130 along the dovetail groove track 124, and the height of the power head 110 can be adjusted.

[0076] As Figures 3 - 5 shown, as a preferred embodiment of the present invention, the self-locking device 123 includes:

[0077] Stepper motor 1231, installed on the lower surface of the inner drilling machine housing 122;

[0078] The cam 1232 is installed on the stepper motor 1231, and the cam 1232 is driven by the stepper motor 1231 to operate;

[0079] The self-locking block 1233 is slidably arranged in the inner drilling machine housing 122, and the cam 1232 contacts the self-locking block 1233.

[0080] In the embodiment of the present invention, preferably, the outer drilling machine body 130 is provided with a track corresponding to the dovetail groove track 124. Specifically, the cam 1232 is driven by the stepper motor 1231 to operate, and the cam 1232 pushes the self-locking block 1233 to move in the track provided on the inner drilling machine housing 122, so that the self-locking block 1233 contacts the track corresponding to the outer drilling machine body 130 and forms static friction to complete self-locking.

[0081] As Figures 3 - 5 shown, as a preferred embodiment of the present invention, the outer drilling machine body 130 includes:

[0082] The outer drilling machine housing 132, and the outer drilling machine housing 132 is provided with a threaded hole 137;

[0083] The second motor 133 is installed on the outer drilling machine housing 132, and the second motor 133 is connected to the bevel gear 136 through the motor rod 135;

[0084] The motor rod 135, and the other end of the motor rod 135 is installed on the outer drilling machine housing 132 through the bearing 134 and the bearing seat 131;

[0085] The bevel gear 136, and the bevel gear 136 is meshed and connected with the bevel gear 128.

[0086] In the embodiment of the present invention, preferably, the second motor 133 drives the motor rod 135 to rotate, the motor rod 135 drives the bevel gear 136 to rotate, and the bevel gear 136 drives the bevel gear 128 to rotate, so as to drive the inner drilling machine body 120 to move up and down.

[0087] As Figure 6 shown, as a preferred embodiment of the present invention, the rotary cantilever 200 includes:

[0088] The cantilever body 201, one end of the cantilever body 201 is installed on the rotary drive platform 300, the other end of the cantilever body 201 is connected to the track wheel 207 through the support beam 206, and the track wheel 207 is installed on the track 400; a dovetail groove track 204 is provided on the cantilever body 201, and the drilling machine body 100 moves axially back and forth along the dovetail groove track 204;

[0089] The bearing block two 202 is fixed on the cantilever 201;

[0090] The ball screw 203, one end of the ball screw 203 passes through the threaded hole 137 and is connected to the motor three 205, and the other end of the ball screw 203 is connected to the bearing block two 202;

[0091] The motor three 205 is installed on the cantilever 201 and is used to drive the ball screw 203.

[0092] In the embodiment of the present invention, preferably, by providing the support beam 206 and the track wheel 207, when the rotary cantilever 200 makes a circular motion around the rotary drive table 300, the stability of the motion can be improved and the drilling accuracy of the overall equipment can be increased. The motor three 205 drives the ball screw 203 to rotate, and in cooperation with the threaded hole 137, the drilling body 100 moves axially back and forth along the dovetail groove track two 204.

[0093] Such as Figure 7 and Figure 8 shown, as a preferred embodiment of the present invention, the rotary drive table 300 includes:

[0094] The ball bearing 305, the upper connecting flange 306, the gear shaft 308 and the lower connecting bearing flange 309; and

[0095] The worm 301 is installed on the drive table housing 307, and the worm 301 is connected to the servo motor 304;

[0096] The gear 302 is installed on the drive table housing 307, the gear 302 is meshed and connected with the worm 301, the gear 302 is connected to the ball bearing 305, the upper connecting flange 306 and the lower connecting bearing flange 309 through the gear shaft 308, and one end of the cantilever 201 is installed on the gear shaft 308;

[0097] The electric control box 303 is installed on the drive table housing 307;

[0098] The servo motor 304 is installed on the drive table housing 307, the drive table housing 307 is installed on the floor 3010, and the floor 3010 is installed on the ground through anchor bolts.

[0099] In the embodiment of the present invention, preferably, the inside of the electric control box 303 is installed with the drivers and PLC controllers of all the motors involved in the present invention. The worm 301 and the gear 302 constitute a reduction mechanism. The servo motor 304 drives the worm 301 to rotate, and the worm 301 drives the gear 302 to rotate, and the reduced rotary motion is transmitted to the rotary cantilever 200. Through the programmable servo motor 304, the rotation speed, stop position and angle of the rotary cantilever 200 can be accurately controlled.

[0100] The precision drilling workflow of the present invention is as follows Figure 9 shown. The coordinate positioning method adopted by the present invention is as follows Figure 10 shown: The present invention uses the spatial polar coordinate method to position the internal axial drilling requirements of a specific dome-shaped structure. In the polar coordinate system of the present invention, the position of the power head 110 is determined by the height h, the polar radius r, and the polar angle A. The polar radius r represents the distance from a point to the origin, the polar angle A represents the angle between the point and the positive x-axis of the reference direction, and the height h is expressed as the height difference between the power head 110 and the upper surface of the rotary cantilever 200. Compared with the Cartesian coordinate system of the rectangular coordinate system, polar coordinates are more suitable for describing circular or symmetric figures centered at the origin, so they are more suitable for describing the processing environment applied in the present invention.

[0101] The working principle of the present invention is:

[0102] When starting a drilling process with the special drilling machine for dome-shaped structures, first start the console 140, and then control the rotary cantilever 200 by controlling the rotary drive table 300. Due to the characteristics of the servo motor 304 itself, precise control of the polar angle A can be achieved. Then, adjust the position of the drill body 100, reduce the polar radius r to create enough machining space, release the self-locking device 123, and raise the inner drill body 120 to change the height h until it is aligned with the machining position; then start the power head 110 and increase the polar radius r to achieve feed, and finally complete the drilling.

[0103] The above is only the preferred embodiment of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent.

Claims

1. A special drilling rig for drilling domed structures, characterized in that, Comprising: A drill body, installed on a rotary cantilever, and the axial forward and backward movement of the drill body is controlled by the rotary cantilever; A rotary cantilever, one end of which is installed on a rotary drive platform to achieve circumferential movement around the rotary drive platform; A rotary drive platform, installed on the ground, and the rotary drive platform is used to provide the power for the rotary cantilever to rotate; A track, installed on the ground, and the other end of the rotary cantilever is installed on the track; A bracket, installed on the ground; The drill body includes: A power head, installed on the inner drill rig body, and the power head connects the drill bit and the screw drill through a Morse taper; An inner drill rig body, slidably installed in the outer drill rig body, and the inner drill rig body is used to provide power for the power head and is used for self-locking when moving up and down in the outer drill body; An outer drill body, slidably installed on the rotary cantilever, and the outer drill body is used to provide power for the up and down movement of the inner drill rig body; A control console, installed on the outer drill body; The inner drill rig body includes: A motor one, installed on the outer shell of the inner drill rig, and the motor one is used to provide power for the power head; An outer shell of the inner drill rig, on which a dovetail groove track one is provided, and the inner drill rig body moves up and down in the outer drill body along the dovetail groove track one. A screw rod seat one and a screw rod seat two are installed on the outer shell of the inner drill rig; A self-locking device, installed on the lower side of the outer shell of the inner drill rig, and the self-locking device is used to lock the position of the inner drill rig body; A bevel gear one, installed in the outer drill rig body, and a threaded rod is fixedly connected to the bevel gear one. The threaded rod is threadedly connected to the screw rod seat one and the screw rod seat two; The self-locking device includes: A stepping motor, installed on the lower surface of the outer shell of the inner drill rig; A cam, installed on the stepping motor, and the cam is driven by the stepping motor to operate; A self-locking block, slidably arranged in the outer shell of the inner drill rig, and the cam contacts the self-locking block.

2. The special drilling rig for drilling in a dome-shaped structure according to claim 1, characterized in that, The outer drill body includes: An outer shell of the outer drill rig, on which a threaded hole is provided; A motor two, installed on the outer shell of the outer drill rig, and the motor two is connected to a bevel gear two through a motor rod; A motor rod, and the other end of the motor rod is installed on the outer shell of the outer drill rig through a bearing and a bearing seat one; A bevel gear two, and the bevel gear two is meshed and connected with the bevel gear one.

3. The special drilling rig for dome-shaped structure drilling according to claim 2, characterized in that, The rotary cantilever includes: A cantilever body, one end of which is installed on the rotary drive platform, and the other end of the cantilever body is connected to a track wheel through a support beam. The track wheel is installed on the track; a dovetail groove track two is provided on the cantilever body, and the drill body moves axially forward and backward along the dovetail groove track two; A bearing seat two, fixed to the cantilever body; A ball screw, one end of which passes through the threaded hole and is connected to a motor three, and the other end of the ball screw is connected to the bearing seat two; A motor three, installed on the cantilever body, and used to drive the ball screw.

4. The special drilling rig for dome-shaped structure drilling according to claim 3, characterized in that, The rotary drive platform includes: A ball bearing, an upper connecting flange, a gear shaft and a lower connecting bearing flange; and A worm, installed on the outer shell of the drive platform, and the worm is connected to a servo motor; The gear is installed on the outer shell of the driving platform. The gear is meshed and connected with the worm. The gear is connected to the ball bearing, the upper connecting flange and the lower connecting bearing flange through the gear shaft. One end of the cantilever body is installed on the gear shaft; The electric control box is installed on the outer shell of the driving platform; The servo motor is installed on the outer shell of the driving platform. The outer shell of the driving platform is installed on the floor stand, and the floor stand is installed on the ground through anchor bolts.

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