CN214264023U

CN214264023U - Quick drilling fixture for round pipe

Info

Publication number: CN214264023U
Application number: CN202023107887.4U
Authority: CN
Inventors: 李钦生; 梁静; 刘欣玉; 王晓浩; 孙志瑞; 汪健阳; 黄磊
Original assignee: Anhui Technical College of Mechanical and Electrical Engineering
Current assignee: Hefei Longzhi Electromechanical Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-09-24
Anticipated expiration: 2030-12-21

Abstract

The utility model belongs to the technical field of drilling equipment, in particular to a quick drilling fixture for a round pipe, which comprises a bottom plate, a supporting block, a first roller, a first rotating shaft, a first motor, a positioning mechanism and a length fixing mechanism; the utility model has the advantages that the drilling mechanism moves downwards, the elastic force generated by the first spring enables the positioning block to press the round pipe, and the V-shaped groove automatically guides the round pipe, so that the automatic positioning and clamping of the round pipe are realized, and the positioning and clamping time is reduced; the drilling mechanism continues to move downwards to drill, the drilling mechanism moves upwards to drive the upper end of the first spring to move upwards, and when the pulling force of the first spring is greater than the gravity of the positioning block and the sliding block, the positioning block moves upwards to realize automatic loosening of the circular tube and reduce loosening time; after the pipe loosened, No. two sprocket rotations were driven to the motor, driven No. one the sprocket and rotated, driven a cylinder and rotated, made the pipe move the position that fixed length mechanism confirmed, drilling mechanism drilled once more, realized circulation drilling, save time.

Description

Quick drilling fixture for round pipe

Technical Field

The invention belongs to the technical field of drilling equipment, and particularly relates to a rapid drilling clamp for a circular tube.

Background

The round pipe is a main section material, has metal material and also has non-metal material, and has wide application, for example, as an equipment frame, a mechanical equipment part, a tool product component and the like. Due to the special shape of the round tube, the round tube is relatively difficult to process and clamp, the clamp is easy to deform due to over-tightening, clamp marks can be left on the surface of the clamp, and the clamp is easy to fly out of the clamp if the clamp is loose, so that safety accidents are caused. Some circular pipe parts need to be drilled on the surface, and the drilling difficulty is generally greater. Drilling holes in the circular tube, positioning and clamping the circular tube are very important, and a positioning and clamping fixture is needed.

The positioning and clamping fixture of most of round tubes at present is manual, when the drilling quantity is more, the position of the hole needs manual measurement, and the manual positioning and clamping is carried out, so that the drilling mode has low reliability, the production efficiency is low, and the rapid drilling can not be realized.

Disclosure of Invention

In order to make up the defects of the prior art, the invention provides a rapid drilling clamp for a circular tube. The invention is mainly used for solving the problem that most of circular tube positioning and clamping fixtures in the prior art are manual, namely the problems that the production efficiency of drilling is low and quick drilling cannot be realized.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a rapid drilling clamp for a circular tube, which comprises a bottom plate, a supporting block, a first roller, a first rotating shaft, a first motor, a positioning mechanism and a length fixing mechanism, wherein the first rotating shaft is connected with the first motor; the supporting block is arranged above the bottom plate; the supporting block is arranged at one end of the bottom plate; the supporting block is fixedly connected with the bottom plate; the upper end of the supporting block is provided with a first mounting groove; the first roller is arranged in the first mounting groove; a first annular groove is formed in the outer cylindrical surface of the first roller; the first annular groove is formed in the middle of the first roller; the first annular groove is arc-shaped; the lowest point of the first annular groove is in the middle position of the first roller; the first roller is rotatably connected with the supporting block through the first rotating shaft; the first roller is fixedly connected with the first rotating shaft; the axis of the first rotating shaft is vertical to the long edge of the bottom plate; the two first rotating shafts are symmetrically arranged at two ends of the supporting block; one end of one of the first rotating shafts is provided with a first chain wheel; the first chain wheel is fixedly connected with the first rotating shaft; the first motor is arranged on the side surface of the supporting block parallel to the axis of the first rotating shaft; the first motor is arranged on the side surface of the supporting block close to the first chain wheel; the first motor is fixedly connected with the supporting block through a motor base; a second chain wheel is arranged at the end part of the rotating shaft of the first motor; the second chain wheel is fixedly connected with a rotating shaft of the first motor; the second chain wheel is connected with the first chain wheel through a chain; the positioning mechanism is arranged above the supporting block; the positioning mechanism comprises a positioning block, a guide post, a sliding block, a guide sleeve and a first spring; the upper end of the first spring is fixedly connected with the lower end of the drilling mechanism; the lower end of the first spring is fixedly connected with the positioning block; the first spring is sleeved outside the drill bit of the drilling mechanism; a guide hole is vertically formed in the middle of the positioning block; the guide hole penetrates through the positioning block; the guide sleeve is fixedly connected in the guide hole; the axis of the inner hole of the guide sleeve and the axis of the drill bit of the drilling mechanism are on the same straight line; a V-shaped groove is formed in the middle of the lower surface of the positioning block; the V-shaped groove penetrates through the positioning block; the two opposite side surfaces of the positioning block are symmetrically provided with the sliding blocks; the sliding block is arranged on the side surface of the positioning block, which is perpendicular to the axis of the first rotating shaft; the sliding block is fixedly connected with the positioning block; the sliding block is connected to the guide post in a sliding manner; the guide posts are symmetrically arranged in the avoiding grooves on the side surfaces of the supporting blocks; the guide post is arranged between the two first rollers; the guide post is fixedly connected with the supporting block; one side of the supporting block is provided with the length control mechanism; the length control mechanism is used for controlling the position of the circular tube.

When the automatic positioning and clamping device works, a round pipe is placed on two first rollers, a first motor drives a second chain wheel to rotate, the first chain wheel is further driven to rotate, the first rotating shaft is further driven to rotate, the first roller is further driven to rotate, the round pipe is further driven to move, the round pipe is further moved to a position determined by a length fixing mechanism, a drilling mechanism moves downwards, a positioning block is further driven to move downwards, the positioning block is further contacted with the round pipe, the drilling mechanism continues to move downwards, the drilling mechanism compresses a first spring, the first spring generates elastic force, the round pipe is further pressed by the elastic force, the inclined surface of the V-shaped groove is further contacted with the outer cylindrical surface of the round pipe due to the V-shaped groove arranged on the lower surface of the positioning block, the outer cylindrical surface of the round pipe is further automatically guided by the inclined surface of the V-shaped groove, the round pipe is further positioned in the middle part of the positioning block, the automatic positioning and clamping of the round pipe is further reduced, thereby improving the working efficiency and saving the time; after the round pipe is clamped, the drilling mechanism continues to move downwards, a drill bit of the drilling mechanism drills, after drilling is completed, the drilling mechanism moves upwards, the drilling mechanism drives the upper end of the first spring to move upwards, when the length of the first spring is larger than the original length of the first spring, the first spring generates pulling force, the drilling mechanism drives the upper end of the first spring to continue to move upwards, when the pulling force of the first spring is larger than the gravity of the positioning block and the sliding block, the positioning block moves upwards, automatic loosening of the round pipe is achieved, loosening time of the round pipe is reduced, working efficiency is improved, and time is saved; after the pipe loosened, No. two sprocket rotations were driven to a motor, and then driven a sprocket rotation, and then driven an axis of rotation and rotated, and then driven a cylinder and rotated, and then driven the pipe and removed, and then made the pipe remove the position that fixed length mechanism confirmed, and then drilling mechanism moves down once more and drills, and then realizes quick circulation drilling, and then save time.

Preferably, the length fixing mechanism comprises a second roller, a third roller, a length fixing strip, a rack, a gear, a second rotating shaft, a servo motor, a support frame and a support column; a second mounting groove is formed in the side face, perpendicular to the axis of the first rotating shaft, of the supporting block; the second mounting groove penetrates through the supporting block; the second roller is arranged at the upper part of the second mounting groove; the axis of the second roller is parallel to the axis of the first rotating shaft; the two second rollers are symmetrically arranged at two ends of the supporting block; the second roller is rotationally connected with the supporting block; the fixed strip is arranged below the second roller; the fixed strip is in rolling connection with the second roller; the third roller is arranged below the fixed strip; the third roller is in rolling connection with the fixed length strip; the two third rollers are symmetrically arranged at two ends of the supporting block; the third roller is rotationally connected with the supporting block; the rack is arranged below the fixed strip; the rack is fixedly connected with the fixed length strip; the rack is arranged in the middle of the fixed strip; a fourth groove is formed in the third roller corresponding to the rack; the fourth groove avoids the rack; the gear is arranged below the fixed strip; the gear is meshed with the rack; the gear is rotationally connected with the supporting block through the second rotating shaft; the gear is fixedly connected with the second rotating shaft; the end part of one end of the second rotating shaft is fixedly connected with the rotating shaft end part of the servo motor; the servo motor is fixedly connected with the supporting block through a motor frame; one end of the fixed strip is fixedly connected with the support frame; the support frame is arranged above the fixed strip; a fourth roller is arranged at the upper end of the supporting frame; the support frame is rotationally connected with the fourth roller; a second annular groove is formed in the outer cylindrical surface of the fourth roller; the second annular groove is formed in the middle of the fourth roller; the second annular groove is arc-shaped; the lowest point of the second annular groove is in the middle position of the fourth roller; one end of the fixed-length strip, which is close to the support frame, is provided with a positioning column; the positioning column is arranged above the fixed strip; the positioning column is fixedly connected with the fixed length strip; one end of the fixed-length strip close to the support frame is fixedly connected with the upper end of the support column; the supporting column is arranged below the fixed strip; a third mounting groove is formed in the lower end of the support column; a first roller is arranged in the third mounting groove; the first roller is rotationally connected with the support column; the first roller is in rolling connection with the bottom plate.

After the round pipe is loosened, the servo motor drives the second rotating shaft to rotate, so that the gear is driven to rotate, the rack is driven to move, the fixed length strip is driven to move, the positioning column is driven to move, meanwhile, the first motor controls the first roller to rotate, the round pipe is driven to move axially along the round pipe, so that the tail end of the round pipe is abutted against the positioning column, the round pipe is further moved axially to a position needing drilling along the round pipe, the drilling mechanism is further used for drilling at a correct position, the machining precision of the round pipe is further ensured, and the quality of the round pipe is further ensured; the support columns are arranged below the fixed-length strips, so that the tail ends of the fixed-length strips are prevented from deforming downwards, the upper ends of the positioning columns are prevented from deflecting outwards, the deviation of the axial displacement of the circular tube is reduced, the deviation of the drilling position of the drilling mechanism is reduced, the machining precision of the circular tube is improved, and the quality of the circular tube is improved; and No. four cylinders produce the holding power to the pipe end, prevent that the pipe end from moving downwards, and then reduce pipe axial displacement's deviation, and then reduce the deviation of drilling mechanism drilling position, and then improve the pipe machining precision, and then improve the quality of pipe.

Preferably, the pitch of the lower part of the first spring is larger than that of the upper part of the first spring; the diameter of the spring wire at the lower part of the first spring is larger than that of the spring wire at the upper part of the first spring.

When the drilling mechanism moves downwards to compress the spring, the screw pitch of the lower part of the first spring is larger than that of the upper part, and the wire diameter of the spring wire of the lower part is larger than that of the spring wire of the upper part, so that the lower part of the first spring is more difficult to compress than the upper part, the upper part of the first spring is compressed before the lower part of the first spring, when the first drilling mechanism drills, the distance between the spring wire of the lower part of the first spring and the spring wire is large, scrap iron is conveniently discharged, scrap iron wound on a drill bit is further reduced, the time for cleaning the scrap iron is further reduced, and the time is further saved; after the drilling mechanism stops moving upwards, the pitch of the lower part of the first spring is far larger than that of the upper part of the first spring, so that scrap iron wound on a drill bit can be conveniently cleaned by the distance between the spring wire of the lower part and the spring wire, the scrap iron wound on the drill bit can be cleaned, scrap iron flying out to the periphery can be reduced, the possibility that a worker is scratched by the flying scrap iron can be reduced, and the safety of the worker can be guaranteed; the screw pitch of the lower part of the spring is large, so that scrap iron is not easy to wind on the spring, the scrap iron wound on the spring is reduced, the time for cleaning the scrap iron is reduced, and the time is saved; and the distance between the spring wire at the lower part and the spring wire is large, so that the guide sleeve can be conveniently and quickly replaced, the time for replacing the guide sleeve when the drilling diameter is different is further reduced, and the time is further saved.

Preferably, a magnet is arranged on the side surface of the guide post opposite to the sliding block; the magnet is arranged close to the first roller.

When drilling mechanism rebound, the magnetic force that magnet produced attracts the slider, and then increases slider gliding resistance that makes progress, and when a spring pulling force was greater than the resistance that the slider received, the sudden quick rebound of slider, and then a spring shake fast, and then will twine the iron fillings that twine on a spring and shake off, and then reduce the time of clearance iron fillings, and then save time.

Preferably, a first annular air bag is arranged outside the first annular groove; the first annular air bag is sleeved outside the first roller; first nuts are symmetrically arranged at two ends of the first annular air bag; the first nut is in threaded connection with the first roller; a second annular air bag is arranged outside the second annular groove; the second annular air bag is sleeved outside the fourth roller; two ends of the second annular air bag are symmetrically provided with a second nut; the second nut is in threaded connection with the fourth roller.

After the circular tube is pressed on the first annular air bag, the shape of the first annular air bag is adjusted by rotating the first nut, so that the first annular air bag is in a fixed shape, a jointed curved surface is formed at the contact part of the first annular air bag and the circular tube, when the first roller drives the first annular air bag to rotate, gas in the first annular air bag flows, the jointed curved surface at the contact part of the first annular air bag and the circular tube is kept unchanged all the time, the contact area of the circular tube and the first annular air bag is increased, the friction force between the circular tube and the first annular air bag is increased, the resistance of the circular tube to rotate on the first annular air bag is increased, the rotation of the circular tube on the first annular air bag is reduced, a drilling mechanism is used for drilling at a correct position, the machining precision of the circular tube is improved, and the quality of the circular tube is improved; the pipe presses back on annular gasbag No. one, through rotatory nut No. two, adjust annular gasbag shape No. two, make annular gasbag No. two form a fixed shape, form the curved surface of a laminating in annular gasbag and pipe contact department No. two, when No. four cylinders drive annular gasbag No. two and rotate, the gas flow in the annular gasbag No. two, make the laminating curved surface of annular gasbag and pipe contact department unchangeable always No. two, and then increase the area of contact of pipe and annular gasbag No. two, and then increase the frictional force between pipe and the annular gasbag No. two, and then increase the pipe pivoted resistance on annular gasbag No. two, and then reduce the rotation of pipe on annular gasbag No. two, and then make drilling mechanism drill at the exact position, and then improve pipe machining precision, and then improve the quality of pipe.

Preferably, the first roller is formed by two conical rollers; the diameter of one end, close to the side wall of the third mounting groove, of the conical roller is larger than that of the other end of the conical roller; the bottom plate is provided with a guide rail; the guide rail is fixedly connected with the bottom plate; the surfaces of the guide rails, which are in contact with the conical rollers, are arranged into corresponding inclined surfaces; the conical roller is in rolling connection with the guide rail; one end of the conical roller, which is close to the side wall of the third mounting groove, is attached to the side wall of the third mounting groove.

Through setting the guide rail surface to the inclined plane, the inclined plane produces the effort to two conical rollers simultaneously, and then make two conical rollers produce the trend toward No. three mounting groove lateral walls removal simultaneously, and then produce thrust to two lateral walls of No. three mounting grooves simultaneously, and then make two lateral walls of No. three mounting grooves produce the trend of removing simultaneously, but the distance is fixed between two lateral walls of No. three mounting grooves, consequently, two conical rollers are unchangeable in position on the guide rail, and then make the position of support column on the guide rail unchangeable, and then prevent that the fixed length strip end from producing horizontal off normal, and then prevent that the reference column from taking place the off normal, and then reduce pipe axial displacement's deviation, and then reduce the deviation of drilling mechanism drilling position, and then improve pipe machining precision, and then improve the quality of pipe.

The invention has the following beneficial effects:

1. in the invention, a round pipe is placed on two first rollers, a first motor drives a second chain wheel to rotate, and further drives the first rotating shaft to rotate, and further drives the first roller to rotate, and further drives the round pipe to move, so that the round pipe moves to a position determined by a length fixing mechanism, a drilling mechanism moves downwards, and further drives a positioning block to move downwards, so that the positioning block is contacted with the round pipe, the drilling mechanism continues to move downwards, and further the drilling mechanism compresses a first spring, so that the first spring generates elastic force, and further the round pipe is pressed by the elastic force, and because the lower surface of the positioning block is provided with a V-shaped groove, the inclined surface of the V-shaped groove is contacted with the outer cylindrical surface of the round pipe, and further the inclined surface of the V-shaped groove automatically guides the outer cylindrical surface of the round pipe, so that the round pipe is positioned in the middle part of the positioning block, and further realizes automatic positioning and clamping of the round pipe, thereby reducing the positioning and clamping time of the round pipe, further improving the working efficiency and further saving the time; after the round pipe is clamped, the drilling mechanism continues to move downwards, a drill bit of the drilling mechanism drills, after drilling is completed, the drilling mechanism moves upwards, the drilling mechanism drives the upper end of the first spring to move upwards, when the length of the first spring is larger than the original length of the first spring, the first spring generates pulling force, the drilling mechanism drives the upper end of the first spring to continue to move upwards, when the pulling force of the first spring is larger than the gravity of the positioning block and the sliding block, the positioning block moves upwards, automatic loosening of the round pipe is achieved, loosening time of the round pipe is reduced, working efficiency is improved, and time is saved; after the pipe loosened, No. two sprocket rotations were driven to a motor, and then driven a sprocket rotation, and then driven an axis of rotation and rotated, and then driven a cylinder and rotated, and then driven the pipe and removed, and then made the pipe remove the position that fixed length mechanism confirmed, and then drilling mechanism moves down once more and drills, and then realizes the circulation drilling, and then save time.

2. After the round pipe is loosened, the servo motor drives the second rotating shaft to rotate, so that the gear is driven to rotate, the rack is driven to move, the fixed length strip is driven to move, the positioning column is driven to move, the first motor controls the first roller to rotate, the round pipe is driven to move axially along the round pipe, the tail end of the round pipe is abutted against the positioning column, the round pipe is further moved axially to a position needing drilling along the round pipe, the drilling mechanism is further used for drilling at a correct position, the machining precision of the round pipe is further guaranteed, and the quality of the round pipe is further guaranteed; the support columns are arranged below the fixed-length strips, so that the tail ends of the fixed-length strips are prevented from deforming downwards, the upper ends of the positioning columns are prevented from deflecting outwards, the deviation of the axial displacement of the circular tube is reduced, the deviation of the drilling position of the drilling mechanism is reduced, the machining precision of the circular tube is improved, and the quality of the circular tube is improved; and No. four cylinders produce the holding power to the pipe end, prevent that the pipe end from moving downwards, and then reduce pipe axial displacement's deviation, and then reduce the deviation of drilling mechanism drilling position, and then improve the pipe machining precision, and then improve the quality of pipe.

3. When the drilling mechanism moves downwards to compress the spring, the screw pitch of the lower part of the first spring is larger than that of the upper part, and the wire diameter of the spring wire of the lower part is larger than that of the spring wire of the upper part, so that the lower part of the first spring is more difficult to compress than the upper part of the first spring, the upper part of the first spring is compressed before the lower part of the first spring, when the first drilling mechanism drills, the distance between the spring wire of the lower part of the first spring and the spring wire is large, scrap iron is conveniently discharged, scrap iron wound on a drill bit is further reduced, the time for cleaning the scrap iron is further reduced, and the time is further saved; after the drilling mechanism stops moving upwards, the pitch of the lower part of the first spring is far larger than that of the upper part of the first spring, so that scrap iron wound on a drill bit can be conveniently cleaned by the distance between the spring wire of the lower part and the spring wire, the scrap iron wound on the drill bit can be cleaned, scrap iron flying out to the periphery can be reduced, the possibility that a worker is scratched by the flying scrap iron can be reduced, and the safety of the worker can be guaranteed; the screw pitch of the lower part of the spring is large, so that scrap iron is not easy to wind on the spring, the scrap iron wound on the spring is reduced, the time for cleaning the scrap iron is reduced, and the time is saved; and the distance between the spring wire at the lower part and the spring wire is large, so that the guide sleeve can be conveniently and quickly replaced, the time for replacing the guide sleeve when the drilling diameter is different is further reduced, and the time is further saved.

4. When the drilling mechanism moves upwards, the magnetic force generated by the magnet attracts the sliding block, so that the upward sliding resistance of the sliding block is increased, when the tension of the first spring is larger than the resistance applied to the sliding block, the sliding block moves upwards suddenly and rapidly, the first spring shakes rapidly, and scrap iron wound on the first spring is shaken off, so that the time for cleaning the scrap iron is reduced, and the time is saved.

5. According to the invention, after a circular tube is pressed on an annular air bag I, the shape of the annular air bag I is adjusted by rotating a nut I, so that the annular air bag I is formed into a fixed shape, a fitted curved surface is formed at the contact part of the annular air bag I and the circular tube, when a roller I drives the annular air bag I to rotate, gas in the annular air bag I flows, so that the fitted curved surface at the contact part of the annular air bag I and the circular tube is always unchanged, the contact area of the circular tube and the annular air bag I is increased, the friction force between the circular tube and the annular air bag I is further increased, the resistance of the circular tube in rotation on the annular air bag I is further increased, the rotation of the circular tube on the annular air bag I is further reduced, a drilling mechanism is further used for drilling at a correct position, the machining precision of the circular tube is further improved, and the quality of the circular tube is further improved; the pipe presses back on annular gasbag No. one, through rotatory nut No. two, adjust annular gasbag shape No. two, make annular gasbag No. two form a fixed shape, form the curved surface of a laminating in annular gasbag and pipe contact department No. two, when No. four cylinders drive annular gasbag No. two and rotate, the gas flow in the annular gasbag No. two, make the laminating curved surface of annular gasbag and pipe contact department unchangeable always No. two, and then increase the area of contact of pipe and annular gasbag No. two, and then increase the frictional force between pipe and the annular gasbag No. two, and then increase the pipe pivoted resistance on annular gasbag No. two, and then reduce the rotation of pipe on annular gasbag No. two, and then make drilling mechanism drill at the exact position, and then improve pipe machining precision, and then improve the quality of pipe.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic view of the overall structure of a positioning jig according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of a first roller in the present invention;

FIG. 4 is a schematic view of the internal structure of the positioning jig of the present invention;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a schematic structural diagram of a first roller of the present invention;

in the figure: the device comprises a bottom plate 1, a guide rail 11, a supporting block 2, a second mounting groove 22, a first roller 3, a first annular air bag 31, a first nut 32, a first rotating shaft 4, a first chain wheel 41, a first motor 5, a second chain wheel 51, a chain 52, a positioning mechanism 6, a positioning block 61, a V-shaped groove 611, a guide post 62, a magnet 621, a sliding block 63, a guide sleeve 64, a first spring 65, a length control mechanism 7, a second roller 71, a third roller 72, a length control strip 73, a rack 731, a gear 74, a second rotating shaft 75, a servo motor 76, a supporting frame 77, a fourth roller 771, a second annular air bag 772, a second nut 773, a supporting post 78, a third mounting groove 781, a first roller 782, a conical roller 783 and a positioning post 79.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, a rapid drilling jig for a circular tube comprises a bottom plate 1, a supporting block 2, a first roller 3, a first rotating shaft 4, a first motor 5, a positioning mechanism 6 and a length fixing mechanism 7; the supporting block 2 is arranged above the bottom plate 1; the supporting block 2 is arranged at one end of the bottom plate 1; the supporting block 2 is fixedly connected with the bottom plate 1; the upper end of the supporting block 2 is provided with a first mounting groove; the first roller 3 is arranged in the first mounting groove; a first annular groove is formed in the outer cylindrical surface of the first roller 3; the first annular groove is formed in the middle of the first roller 3; the first annular groove is arc-shaped; the lowest point of the first annular groove is in the middle position of the first roller 3; the first roller 3 is rotatably connected with the supporting block 2 through the first rotating shaft 4; the first roller 3 is fixedly connected with the first rotating shaft 4; the axis of the first rotating shaft 4 is vertical to the long edge of the bottom plate 1; the two first rotating shafts 4 are symmetrically arranged at two ends of the supporting block 2; one end of one of the first rotating shafts 4 is provided with a first chain wheel 41; the first chain wheel 41 is fixedly connected with the first rotating shaft 4; the first motor 5 is arranged on the side surface of the supporting block 2 parallel to the axis of the first rotating shaft 4; the first motor 5 is arranged on the side surface of the supporting block 2 close to the first chain wheel 41; the first motor 5 is fixedly connected with the supporting block 2 through a motor base; a second chain wheel 51 is arranged at the end part of the rotating shaft of the first motor 5; the second chain wheel 51 is fixedly connected with a rotating shaft of the first 5 motor; the second chain wheel 51 is connected with the first chain wheel 41 through a chain 52; the positioning mechanism 6 is arranged above the supporting block 2; the positioning mechanism 6 comprises a positioning block 61, a guide post 62, a sliding block 63, a guide sleeve 64 and a first spring 65; the upper end of the first spring 65 is fixedly connected with the lower end of the drilling mechanism; the lower end of the first spring 65 is fixedly connected with the positioning block 61; the first spring 65 is sleeved outside the drill bit of the drilling mechanism; a guide hole is vertically formed in the middle of the positioning block 61; the guide hole penetrates through the positioning block 61; the guide sleeve 64 is fixedly connected in the guide hole; the axis of the inner hole of the guide sleeve 64 is on the same straight line with the axis of the drill bit of the drilling mechanism; a V-shaped groove 611 is formed in the middle of the lower surface of the positioning block 61; the V-shaped groove 611 penetrates the positioning block 61; the sliding blocks 63 are symmetrically arranged on two opposite side surfaces of the positioning block 61; the sliding block 63 is arranged on the side surface of the positioning block 61 perpendicular to the axis of the first rotating shaft 4; the sliding block 63 is fixedly connected with the positioning block 61; the sliding block 63 is connected to the guide post 62 in a sliding manner; the guide posts 62 are symmetrically arranged in the avoiding grooves on the side surface of the supporting block 2; the guide column 62 is arranged in the middle of the two first rollers 3; the guide post 62 is fixedly connected with the supporting block 2; one side of the supporting block 2 is provided with the fixed length mechanism 7; the length control mechanism 7 is used for controlling the position of the circular tube.

When the automatic guiding device works, a round pipe is placed on the two first rollers 3, the first motor 5 drives the second chain wheel 51 to rotate, the first chain wheel 41 is further driven to rotate, the first rotating shaft 4 is further driven to rotate, the first roller 3 is further driven to rotate, the round pipe is further driven to move, the round pipe is further moved to the position determined by the length fixing mechanism 7, the drilling mechanism moves downwards, the positioning block 61 is further driven to move downwards, the positioning block 61 is further contacted with the round pipe, the drilling mechanism continues to move downwards, the drilling mechanism compresses the first spring 65, the first spring 65 generates elastic force, the round pipe is further compressed by the elastic force, the lower surface of the positioning block 61 is provided with the V-shaped groove 611, the inclined surface of the V-shaped groove 611 is further contacted with the outer cylindrical surface of the round pipe, the inclined surface of the V-shaped groove 611 automatically guides the outer cylindrical surface of the round pipe, and the round pipe is further positioned in the middle part of the positioning block 61, the automatic positioning and clamping of the circular tube are realized, the positioning and clamping time of the circular tube is reduced, the working efficiency is improved, and the time is saved; after the round pipe is clamped, the drilling mechanism continues to move downwards, and then a drill bit of the drilling mechanism drills, after drilling is completed, the drilling mechanism moves upwards, the drilling mechanism drives the upper end of the first spring 65 to move upwards, when the length of the first spring 65 is greater than the original length of the first spring 65, the first spring 65 generates a pulling force, the drilling mechanism drives the upper end of the first spring 65 to continue to move upwards, when the pulling force of the first spring 65 is greater than the gravity of the positioning block 61 and the sliding block 63, the positioning block 61 moves upwards, automatic loosening of the round pipe is achieved, the loosening time of the round pipe is reduced, working efficiency is improved, and time is saved; after the pipe loosened, a motor 5 drove No. two sprocket 51 and rotated, and then drove a sprocket 41 and rotated, and then drove a axis of rotation 4 and rotated, and then drove a cylinder 3 and rotated, and then drove the pipe and remove, and then made the pipe remove to the position that fixed length mechanism 7 was confirmed, and then drilling mechanism moves down once more and drills, and then realizes the circulation drilling, and then save time.

As shown in fig. 1 to 5, the length control mechanism 7 includes a second roller 71, a third roller 72, a length control strip 73, a rack 731, a gear 74, a second rotating shaft 75, a servo motor 76, a support bracket 77 and a support pillar 78; a second mounting groove 22 is formed in the side surface, perpendicular to the axis of the first rotating shaft 4, of the supporting block 2; the second mounting groove 22 penetrates through the supporting block 2; the second roller 71 is arranged at the upper part of the second mounting groove 22; the axis of the second roller 71 is parallel to the axis of the first rotating shaft 4; the two second rollers 71 are symmetrically arranged at two ends of the supporting block 2; the second roller 71 is rotatably connected with the supporting block 2; the fixed strip 73 is arranged below the second roller 71; the fixed strip 73 is in rolling connection with the second roller 71; the third roller 72 is arranged below the fixed strip 73; the third roller 72 is in rolling connection with the fixed strip 73; the two third rollers 72 are symmetrically arranged at two ends of the supporting block 2; the third roller 72 is rotatably connected with the supporting block 2; the rack 731 is arranged below the fixed strip 73; the rack 731 is fixedly connected with the fixed strip 73; the rack 731 is arranged in the middle of the fixed bar 73; a fourth groove is formed in the position, corresponding to the rack 731, of the third roller 72; the fourth groove avoids the rack 731; the gear 74 is arranged below the fixed strip 73; the gear 74 is engaged with the rack 731; the gear 74 is rotatably connected with the supporting block 2 through the second rotating shaft 75; the gear 74 is fixedly connected with the second rotating shaft 75; the end part of one end of the second rotating shaft 75 is fixedly connected with the rotating shaft end part of the servo motor 76; the servo motor 76 is fixedly connected with the supporting block 2 through a motor frame; one end of the fixed strip 73 is fixedly connected with the support frame 77; the support frame 77 is disposed above the fixed strip 73; a fourth roller 771 is arranged at the upper end of the supporting frame 77; the supporting frame 77 is rotatably connected with the fourth roller 771; a second annular groove is formed in the outer cylindrical surface of the fourth roller 771; the second annular groove is formed in the middle of the fourth roller 771; the second annular groove is arc-shaped; the lowest point of the second annular groove is in the middle position of the fourth roller 771; one end of the fixed strip 73 close to the support frame 77 is provided with a positioning column 79; the positioning column 79 is arranged above the positioning strip 73; the positioning column 79 is fixedly connected with the fixed strip 73; one end of the fixed strip 73 close to the supporting frame 77 is fixedly connected with the upper end of the supporting column 78; the supporting columns 78 are arranged below the fixed strips 73; a third mounting groove 781 is formed in the lower end of the supporting column 78; a first roller 782 is arranged in the third mounting groove 781; the first roller 782 is rotatably connected with the supporting column 78; the first roller 782 is connected with the bottom plate 1 in a rolling manner.

After the round pipe is loosened, the servo motor 76 drives the second rotating shaft 75 to rotate, so as to drive the gear 74 to rotate, so as to drive the rack 731 to move, so as to drive the fixed strip 73 to move, so as to drive the positioning column 79 to move, meanwhile, the first motor 5 controls the first roller 3 to rotate, so as to drive the round pipe to axially move along the round pipe, so that the tail end of the round pipe is abutted against the positioning column 79, so that the round pipe is axially moved to a position to be drilled along the round pipe, so that the drilling mechanism is used for drilling at the correct position, so as to ensure the machining precision of the round pipe, and further ensure the quality of the round pipe; the supporting columns 78 are arranged below the fixed length strips 73, so that the tail ends of the fixed length strips 73 are prevented from deforming downwards, the upper ends of the positioning columns 79 are prevented from deflecting outwards, the deviation of the axial displacement of the circular pipe is reduced, the deviation of the drilling position of the drilling mechanism is reduced, the machining precision of the circular pipe is improved, and the quality of the circular pipe is improved; and No. four cylinder 771 produces the holding power to the pipe end, prevents the terminal downstream of pipe, and then reduces the deviation of pipe axial displacement, and then reduces the deviation of drilling mechanism drilling position, and then improves the pipe machining precision, and then improves the quality of pipe.

As shown in fig. 1 and 4, the pitch of the lower part of the first spring 65 is larger than that of the upper part; the diameter of the spring wire at the lower part of the first spring 65 is larger than that of the spring wire at the upper part.

When the drilling mechanism moves downwards to compress the spring, the thread pitch of the lower part of the first spring 65 is larger than that of the upper part, and the wire diameter of the spring wire of the lower part is larger than that of the spring wire of the upper part, so that the lower part of the first spring 65 is more difficult to compress than the upper part, the upper part of the first spring 65 is compressed before the lower part of the first spring 65, when the first drilling mechanism drills, the distance between the spring wire of the lower part of the first spring 65 and the spring wire is large, scrap iron is conveniently discharged, scrap iron wound on a drill bit is reduced, time for cleaning the scrap iron is reduced, and time is saved; after the drilling mechanism stops moving upwards, the pitch of the lower part of the first spring 65 is far larger than that of the upper part of the first spring 65, so that scrap iron wound on a drill bit can be conveniently cleaned by the distance between the spring wire of the lower part and the spring wire, the scrap iron wound on the drill bit can be cleaned, the scrap iron flying out to the periphery can be reduced, the possibility that a worker is scratched by the flying scrap iron can be reduced, and the safety of the worker can be guaranteed; the screw pitch of the lower part of the spring is large, so that scrap iron is not easy to wind on the spring, the scrap iron wound on the spring is reduced, the time for cleaning the scrap iron is reduced, and the time is saved; and the distance between the spring wire at the lower part and the spring wire is large, so that the guide sleeve 64 can be conveniently and quickly replaced, the time for replacing the guide sleeve 64 when the drilling diameters are different is further reduced, and the time is further saved.

As shown in fig. 1 and 2, a magnet 621 is disposed on a side surface of the guide post 62 opposite to the slider 63; the magnet 621 is disposed near the first roller 3.

When drilling mechanism rebound, the magnetic force that magnet 621 produced attracts slider 63, and then increases slider 63 gliding resistance that makes progress, and when a spring 65 pulling force was greater than the resistance that slider 63 received, slider 63 was quick upward movement suddenly, and then a spring 65 shakes fast, and then shakes the iron fillings that will twine on a spring 65 off, and then reduces the time of clearance iron fillings, and then save time.

As shown in fig. 1 to 5, a first annular air bag 31 is arranged outside the first annular groove; the first annular air bag 31 is sleeved outside the first roller 3; a first nut 32 is symmetrically arranged at two ends of the first annular air bag 31; the first nut 32 is in threaded connection with the first roller 3; a second annular air bag 772 is arranged outside the second annular groove; the second annular air bag 772 is sleeved outside the fourth roller 771; a second nut 773 is symmetrically arranged at two ends of the second annular air bag 772; the second nut 773 is in threaded connection with the fourth roller 771.

After the circular tube is pressed on the first annular air bag 31, the shape of the first annular air bag 31 is adjusted by rotating the first nut 32, so that the first annular air bag 31 is in a fixed shape, a jointed curved surface is formed at the contact part of the first annular air bag 31 and the circular tube, when the first roller 3 drives the first annular air bag 31 to rotate, gas in the first annular air bag 31 flows, the jointed curved surface at the contact part of the first annular air bag 31 and the circular tube is unchanged, the contact area of the circular tube and the first annular air bag 31 is increased, the friction force between the circular tube and the first annular air bag 31 is increased, the rotating resistance of the circular tube on the first annular air bag 31 is increased, the rotation of the circular tube on the first annular air bag 31 is reduced, a drilling mechanism is used for drilling at a correct position, the machining precision of the circular tube is improved, and the quality of the circular tube is improved; the pipe presses back on annular gasbag 31 No. one, through rotatory nut 773 No. two, adjust annular gasbag 772 shape No. two, make annular gasbag 772 No. two form a fixed shape, form a curved surface of laminating in annular gasbag 772 and pipe contact department No. two, when cylinder 771 drives annular gasbag 772 No. two and rotates, the gas flow in annular gasbag No. two 772, make the laminating curved surface of annular gasbag No. two 772 and pipe contact department unchangeable always, and then increase the area of contact of pipe and annular gasbag No. two, and then increase the frictional force between pipe and annular gasbag No. two 772, and then increase the pipe pivoted resistance on annular gasbag No. two 772, and then reduce the rotation of pipe on annular gasbag No. two 772, and then make drilling mechanism drill at the exact position, and then improve pipe machining precision, and then improve the quality of pipe.

As shown in fig. 1 and 6, the first roller 782 is formed by two tapered rollers 783; the diameter of one end, close to the side wall of the third mounting groove 781, of the conical roller 783 is larger than that of the other end; the bottom plate 1 is provided with a guide rail 11; the guide rail 11 is fixedly connected with the bottom plate 1; the surfaces of the guide rails 11 contacting with the tapered rollers 783 are arranged to be correspondingly inclined surfaces; the conical roller 783 is in rolling connection with the guide rail 11; one end of the conical roller 783, which is close to the side wall of the third mounting groove 781, is attached to the side wall of the third mounting groove 781.

Through setting the guide rail 11 surface to the inclined plane, the inclined plane produces the effort to two toper gyro wheels 783 simultaneously, and then make two toper gyro wheels 783 produce the trend toward No. three mounting groove 781 lateral walls removal simultaneously, and then produce thrust to two lateral walls of No. three mounting groove 781 simultaneously, and then make two lateral walls of No. three mounting groove 781 produce the trend of removal simultaneously, but the distance is fixed between two lateral walls of No. three mounting groove 781, consequently, two toper gyro wheels 783 are unchangeable in the position on guide rail 11, and then make support column 78 unchangeable in the position on guide rail 11, and then prevent that fixed strip 73 is terminal to produce horizontal off-normal, and then prevent that reference column 79 from taking place the off-normal, and then reduce the deviation of pipe axial displacement, and then reduce the deviation of drilling mechanism drilling position, and then improve the pipe machining precision, and then improve the quality of pipe.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a quick boring grab is used to pipe which characterized in that: comprises a bottom plate (1), a supporting block (2), a first roller (3), a first rotating shaft (4), a first motor (5), a positioning mechanism (6) and a length fixing mechanism (7); the supporting block (2) is arranged above the bottom plate (1); the supporting block (2) is arranged at one end of the bottom plate (1); the supporting block (2) is fixedly connected with the bottom plate (1); a first mounting groove is formed in the upper end of the supporting block (2); the first roller (3) is arranged in the first mounting groove; a first annular groove is formed in the outer cylindrical surface of the first roller (3); the first annular groove is formed in the middle of the first roller (3); the first annular groove is arc-shaped; the lowest point of the first annular groove is in the middle position of the first roller (3); the first roller (3) is rotatably connected with the supporting block (2) through the first rotating shaft (4); the first roller (3) is fixedly connected with the first rotating shaft (4); the axis of the first rotating shaft (4) is vertical to the long edge of the bottom plate (1); the two first rotating shafts (4) are symmetrically arranged at two ends of the supporting block (2); one end of one of the first rotating shafts (4) is provided with a first chain wheel (41); the first chain wheel (41) is fixedly connected with the first rotating shaft (4); the first motor (5) is arranged on the side surface of the supporting block (2) parallel to the axis of the first rotating shaft (4); the first motor (5) is arranged on the side surface, close to the first chain wheel (41), of the supporting block (2); the first motor (5) is fixedly connected with the supporting block (2) through a motor base; a second chain wheel (51) is arranged at the end part of the rotating shaft of the first motor (5); the second chain wheel (51) is fixedly connected with a rotating shaft of the first motor (5); the second chain wheel (51) is connected with the first chain wheel (41) through a chain (52); the positioning mechanism (6) is arranged above the supporting block (2); the positioning mechanism (6) comprises a positioning block (61), a guide post (62), a sliding block (63), a guide sleeve (64) and a first spring (65); the upper end of the first spring (65) is fixedly connected with the lower end of the drilling mechanism; the lower end of the first spring (65) is fixedly connected with the positioning block (61); the first spring (65) is sleeved outside the drill bit of the drilling mechanism; a guide hole is vertically formed in the middle of the positioning block (61); the guide hole penetrates through the positioning block (61); the guide sleeve (64) is fixedly connected in the guide hole; the axis of the inner hole of the guide sleeve (64) is on the same straight line with the axis of the drill bit of the drilling mechanism; a V-shaped groove (611) is formed in the middle of the lower surface of the positioning block (61); the V-shaped groove (611) penetrates through the positioning block (61); the two opposite side surfaces of the positioning block (61) are symmetrically provided with the sliding blocks (63); the sliding block (63) is arranged on the side surface of the positioning block (61) perpendicular to the axis of the first rotating shaft (4); the sliding block (63) is fixedly connected with the positioning block (61); the sliding block (63) is connected to the guide column (62) in a sliding manner; the guide posts (62) are symmetrically arranged in avoidance grooves on the side surfaces of the supporting blocks (2); the guide post (62) is arranged between the two first rollers (3); the guide post (62) is fixedly connected with the supporting block (2); one side of the supporting block (2) is provided with the fixed length mechanism (7); the length control mechanism (7) is used for controlling the position of the circular tube.

2. The rapid drilling jig for the circular tube according to claim 1, characterized in that: the length control mechanism (7) comprises a second roller (71), a third roller (72), a length control strip (73), a rack (731), a gear (74), a second rotating shaft (75), a servo motor (76), a support frame (77) and a support column (78); a second mounting groove (22) is formed in the side surface, perpendicular to the axis of the first rotating shaft (4), of the supporting block (2); the second mounting groove (22) penetrates through the supporting block (2); the second roller (71) is arranged at the upper part of the second mounting groove (22); the axis of the second roller (71) is parallel to the axis of the first rotating shaft (4); the two second rollers (71) are symmetrically arranged at two ends of the supporting block (2); the second roller (71) is rotatably connected with the supporting block (2); the fixed strip (73) is arranged below the second roller (71); the fixed strip (73) is in rolling connection with the second roller (71); the third roller (72) is arranged below the fixed strip (73); the third roller (72) is in rolling connection with the fixed strip (73); the two third rollers (72) are symmetrically arranged at two ends of the supporting block (2); the third roller (72) is rotationally connected with the supporting block (2); the rack (731) is arranged below the fixed strip (73); the rack (731) is fixedly connected with the fixed strip (73); the rack (731) is arranged in the middle of the fixed strip (73); a fourth groove is formed in the position, corresponding to the rack (731), of the third roller (72); the fourth groove avoids the rack (731); the gear (74) is arranged below the fixed strip (73); the gear (74) is engaged with the rack (731); the gear (74) is rotatably connected with the supporting block (2) through the second rotating shaft (75); the gear (74) is fixedly connected with the second rotating shaft (75); the end part of one end of the second rotating shaft (75) is fixedly connected with the rotating shaft end part of the servo motor (76); the servo motor (76) is fixedly connected with the supporting block (2) through a motor frame; one end of the fixed strip (73) is fixedly connected with the support frame (77); the supporting frame (77) is arranged above the fixed strip (73); a fourth roller (771) is arranged at the upper end of the support frame (77); the supporting frame (77) is rotationally connected with the fourth roller (771); a second annular groove is formed in the outer cylindrical surface of the fourth roller (771); the second annular groove is formed in the middle of the fourth roller (771); the second annular groove is arc-shaped; the lowest point of the second annular groove is at the middle position of the fourth roller (771); one end of the fixed strip (73) close to the support frame (77) is provided with a positioning column (79); the positioning column (79) is arranged above the fixed strip (73); the positioning column (79) is fixedly connected with the fixed strip (73); one end of the fixed strip (73) close to the support frame (77) is fixedly connected with the upper end of the support column (78); the supporting column (78) is arranged below the fixed strip (73); a third mounting groove (781) is formed in the lower end of the supporting column (78); a first roller (782) is arranged in the third mounting groove (781); the first roller (782) is rotatably connected with the supporting column (78); the first roller (782) is connected with the bottom plate (1) in a rolling manner.

3. The rapid drilling jig for the circular tube according to claim 2, characterized in that: the pitch of the lower part of the first spring (65) is larger than that of the upper part; the diameter of the spring wire at the lower part of the first spring (65) is larger than that of the spring wire at the upper part.

4. The rapid drilling jig for the circular tube according to claim 3, characterized in that: a magnet (621) is arranged on the side surface of the guide post (62) opposite to the sliding block (63); the magnet (621) is arranged close to the first roller (3).

5. The rapid drilling jig for the round pipe according to claim 4, characterized in that: a first annular air bag (31) is arranged outside the first annular groove; the first annular air bag (31) is sleeved outside the first roller (3); first nuts (32) are symmetrically arranged at two ends of the first annular air bag (31); the first nut (32) is in threaded connection with the first roller (3); a second annular air bag (772) is arranged outside the second annular groove; the second annular air bag (772) is sleeved outside the fourth roller (771); two ends of the second annular air bag (772) are symmetrically provided with a second nut (773); the second nut (773) is in threaded connection with the fourth roller (771).

6. The rapid drilling jig for the circular tube according to claim 5, characterized in that: the first roller (782) is formed by two conical rollers (783); the diameter of one end, close to the side wall of the third mounting groove (781), of the conical roller (783) is larger than that of the other end of the conical roller; a guide rail (11) is arranged on the bottom plate (1); the guide rail (11) is fixedly connected with the bottom plate (1); the surfaces of the guide rails (11) contacting with the conical rollers (783) are arranged into corresponding inclined surfaces; the conical roller (783) is in rolling connection with the guide rail (11); one end of the conical roller (783) close to the side wall of the third mounting groove (781) is attached to the side wall of the third mounting groove (781).