CN113427327B - Method and device for processing edge of intersecting hole of long pipe part with large depth-diameter ratio - Google Patents

Method and device for processing edge of intersecting hole of long pipe part with large depth-diameter ratio Download PDF

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Publication number
CN113427327B
CN113427327B CN202110791521.3A CN202110791521A CN113427327B CN 113427327 B CN113427327 B CN 113427327B CN 202110791521 A CN202110791521 A CN 202110791521A CN 113427327 B CN113427327 B CN 113427327B
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China
Prior art keywords
frame
rack
processing
groove
hole
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CN113427327A (en
Inventor
朱祥龙
康仁科
董志刚
姚金鑫
戴恒震
罗女杰
李增勋
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Dalian University of Technology
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Dalian University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/40—Single-purpose machines or devices for grinding tubes internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/35—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/007—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for end faces of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses a method and a device for processing the edge of an intersecting hole of a long pipe part with a large depth-diameter ratio. The invention adopts the radial positioning unit and the annular positioning unit, thereby realizing the accurate positioning of the crossed holes of the pipeline with the deep and long tube bore line type; because the indexing scheme of the sheave mechanism is adopted, the continuous processing of circumferentially uniformly distributed holes can be realized only by using a simple direct-current speed reducing motor; because the invention adopts the bolt connection of each unit, the installation is mutually independent, and the device is convenient to overhaul and maintain. The pneumatic right-angle motor adopted by the invention has high rotating speed, can realize higher surface processing quality, has high power and high processing efficiency, liberates the labor force of workers and improves the production efficiency.

Description

Method and device for processing edge of intersecting hole of long pipe part with large depth-diameter ratio
Technical Field
The invention belongs to the field of machining, and particularly relates to a method and a device for machining an edge of an intersecting hole of a long pipe part with a large depth-diameter ratio.
Background
The long pipe part with the large depth-diameter ratio is widely applied to the fields of rocket engine barrels, hoisting machinery, gun barrels and the like. As a key part of the gun barrel, a nozzle needs to be arranged at the front part of the gun barrel in actual use, and gas is quickly discharged when the cannonball is launched. The opening of such a long and deep pipe produces burrs at the intersection with the inner wall thereof, the presence of the burrs reduces the firing accuracy of the shell and also reduces the service life of the shell tube of the artillery, and therefore the burrs at the intersection need to be removed.
At present, the deburring at the intersection of the exhaust hole and the inner wall of the gun barrel is mostly carried out in a manual mode, a special cutter is used for manual polishing at the intersection, and the problems of low efficiency, low burr removal rate and the like exist.
Because artillery barrel production is large in batch, manual deburring by workers is high in labor intensity, low in production efficiency and poor in burr removal quality consistency, and actual production and processing requirements cannot be met. Therefore, a device for removing burrs at the edge of an intersecting hole in a deep-hole rifling pipeline is urgently needed to be developed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to design a method and a device for processing the edge of an intersecting hole of a long pipe part with a large depth-diameter ratio, which have the advantages of high deburring efficiency, low labor intensity of workers and good consistency of processing quality.
In order to achieve the purpose, the technical scheme of the invention is as follows: a device for processing the edge of an intersecting hole of a long pipe part with a large depth-diameter ratio comprises a cylinder shell, a traveling unit, an annular positioning unit, a radial positioning unit, an indexing unit, a processing unit and an observation unit, wherein the processing unit is connected with the traveling unit through the indexing unit;
the walking unit comprises a walking frame, a walking motor, a driving wheel, a tension wheel, a compression spring A and an aviation plug, wherein the walking frame comprises a front disc frame, a trough-shaped frame A and a rear disc frame, and the front end and the rear end of the trough-shaped frame A are fixedly connected with the front disc frame and the rear disc frame respectively; the walking motor is fixedly arranged on the groove-shaped frame A through an L-shaped mounting frame, the walking motor is a direct-current speed reducing motor with a right angle and double output shafts, and each output shaft is provided with a driving wheel; the upper end of the compression spring A is connected with one end of the compression rod, and the lower end of the compression spring A is connected with the walking rack; the other end of the pressure lever is rotatably connected with the hinged support through a pin shaft; the hinged support is fixedly arranged on the groove-shaped frame A; the tension wheel is fixedly arranged at the middle section of the pressure lever; the tension wheel and the two driving wheels are tangent to the inner wall of the pipeline at the same time to form three-point support; the aviation plug is mounted on the rear disc frame and used for transferring an internal wire;
the processing unit comprises a processing rack, an abrasive brush cutter, a motor assembly and a cutter feeding mechanism, wherein the processing rack comprises a rotary frame and a groove-shaped frame B, and the rotary frame is fixedly connected with the rear end of the groove-shaped frame B; the motor assembly comprises a right-angle output shaft pneumatic motor, an outer pressing plate, an inner pressing plate, an adjusting screw, an upper anchor ear and a lower anchor ear, wherein a long shaft section of the right-angle output shaft pneumatic motor is fixed through the upper anchor ear and the lower anchor ear, the rotating angle of the main shaft around the long shaft section is positioned by the adjusting screw, the upper anchor ear is installed on the groove-shaped frame B through a cutter feeding mechanism, and the upper anchor ear is rotationally connected with the cutter feeding mechanism; the grinding brush cutter is arranged at the end part of the short shaft section through an outer pressing plate and an inner pressing plate, and is positioned between the outer pressing plate and the inner pressing plate; the inner pressure plate is arranged in a key groove at the end part of the short shaft section through a key, and the outer pressure plate is arranged in a threaded hole in the short shaft section through a bolt;
the cutter feeding mechanism comprises a swing cylinder, a fisheye bearing and a compression spring B, and the swing cylinder is fixedly arranged on the groove-shaped frame B; 2 fisheye bearings are arranged on the groove-shaped frame B; the 2 fisheye bearings are connected through a rotating pin, a support lug is arranged at the upper part of an upper hoop in the motor assembly, and the support lug is connected with an inner hole of the fisheye bearing through the rotating pin to form a rotating pair; the rear end of a long shaft section of the right-angle output shaft pneumatic motor is connected with a compression spring B, and the front side of the upper part of the upper hoop is contacted with an outer hexagonal bolt head on a piston rod of the swing cylinder; the upper end of the compression spring B is fixedly connected with the groove-shaped frame B; when a piston rod of the swing cylinder extends, an outer hexagon bolt is driven to press down to press the front side of the anchor ear, so that the grinding brush cutter is fed downwards, and the compression spring B is compressed; different feeding amounts of the abrasive brush cutter are realized by adjusting the screwing-in depth of the outer hexagon bolt; when the piston rod of the swing cylinder retracts, the compression spring B rebounds to enable the abrasive brush cutter to retract;
the annular positioning unit comprises 4 external thread bearings and right-angle photoelectric switches, the number of the external thread bearings is two, the external thread bearings are mounted on the end faces of the front disc frame and the rear disc frame in pairs through bearing mounting frames respectively, and the two external thread bearings on the same end face are symmetrically mounted; the external thread bearing extends into the groove of the pipeline rifling for circumferential positioning; the right-angle photoelectric switch is arranged on the groove-shaped frame B, and the central line of the light beam points to the central line of the groove of the rifling of the pipeline;
the radial positioning unit comprises two jacking cylinders and rubber head screws, the jacking cylinders are thin cylinders, piston rods of the jacking cylinders are of an internal thread type, the number of the jacking cylinders is 2, the jacking cylinders are fixedly arranged on the groove-shaped frame A along the length direction of the groove-shaped frame A, and the rubber head screws are arranged in threaded holes of the piston rods and are locked by nuts; the rubber head screw is used for preventing the inner wall of the pipeline from being damaged by overlarge jacking force; the extending directions of the piston rods of the two jacking cylinders are opposite; the axial installation distance of the two jacking cylinders is calculated according to the rotation degree of the rifling of the pipeline, so that the center line of the piston rod points to the center of the corresponding rifling groove;
the indexing unit comprises an indexing frame, a crossed roller bearing, a sheave mechanism, an indexing motor and a bull eye bearing; the dividing machine frame is of a rotary box structure, the front end of the dividing machine frame is fixedly connected with the rotary frame through a crossed roller bearing, and the rear end of the dividing machine frame is connected with the front disc frame; the inner ring of the crossed roller bearing is fixedly connected with a sheave mechanism; the number of the grooves of the sheave mechanism is the same as that of holes to be processed on the same radial section in the pipeline; the indexing motor is arranged on the indexing frame and used for driving the sheave mechanism; the number of the bull eye bearings is 3, the bull eye bearings are uniformly distributed along the circumferential direction of the indexing rack, the outer end of each bull eye bearing is provided with a supporting metal ball, and the supporting metal balls are in contact with the inner wall of the pipeline; the indexing motor is a direct current speed reducing motor;
the observation unit comprises an industrial endoscope, the industrial endoscope is arranged on the groove-shaped frame B through a U-shaped clamp, a lens of the industrial endoscope is arranged on the side surface, and the distance from the lens to the inner wall of the pipeline is greater than the focal length of the lens;
the barrel shell comprises a processing barrel shell and a walking barrel shell, the rear end of the processing barrel shell is fixedly installed on a rotary frame of the processing rack, and two ends of the walking barrel shell are fixedly installed on a front disk frame and a rear disk frame of the walking rack respectively.
Furthermore, parallel planes for clamping by a wrench are respectively arranged on two sides of the outer pressing plate.
Furthermore, an included angle between the main shaft axis of the walking motor and the central axis of the pipeline is equal to an included angle between the pipeline rifling and the central axis of the pipeline; and the included angle between the connecting line of the inner holes of the 2 fisheye bearings and the end surface of the rotary frame is equal to the included angle between the pipeline rifling and the central axis of the pipeline.
Furthermore, the tension force generated by the compression spring A on the tension wheel is more than 2 times of the gravity of the whole device; the jacking force output by the jacking cylinder is 3-5 times of the gravity of the whole device.
Furthermore, the connecting line of the central points of the two driving wheels and the central point of the tension wheel are on the same axial section of the pipeline, and the connecting line between the central point of the tension wheel and the central point of the connecting line of the central points of the two driving wheels is vertical to the connecting line of the central points of the two driving wheels.
Further, the axial distance of the two jacking cylinders is an integral multiple of the axial distance of the two adjacent rifling lines.
Further, the outer diameter of the externally threaded bearing is smaller than the width of the rifling groove in the radial section.
Furthermore, the right-angle photoelectric switch, the abrasive brush cutter and the industrial endoscope are arranged in the same plane passing through the central axis of the pipeline, and the normal line of the lens on the side surface of the industrial endoscope points to the hole to be processed, so that when the abrasive brush cutter is processed, the right-angle photoelectric switch and the industrial endoscope are positioned and observe the hole to be processed;
the right-angle photoelectric switch mounting hole of the groove-shaped frame B is a waist-shaped hole, and the waist-shaped hole is used for adjusting a radial angle to ensure that a light beam of the right-angle photoelectric switch is aligned to the center of a processed hole;
the industrial endoscope is arranged on the U-shaped clamp; the U-shaped clamp is fixedly arranged on the processing rack B.
Further, a sheave of the sheave mechanism is fixedly connected with an inner ring of the crossed roller bearing; a driving plate of the sheave mechanism is fixedly connected with an output shaft of the indexing motor; the end face of the drive plate is provided with a cylindrical pin in interference fit;
further, the traveling cylinder shell is mounted on a front disc frame and a rear disc frame of the traveling frame through bolts. The processing barrel shell is installed on a rotary frame of the processing rack through bolts. And the bearing mounting rack of the annular positioning unit is mounted on the front disc rack and the rear disc rack of the walking rack through bolts. And the jacking cylinder of the radial positioning unit is arranged on the groove-shaped frame A of the walking frame through a bolt. And the right-angle photoelectric switch of the annular positioning unit is directly installed on the groove-shaped frame B of the processing rack through a bolt. The dividing machine frame of the dividing unit is arranged on the front disc frame of the walking machine frame through bolts, and the coaxiality of the dividing machine frame and the walking machine frame is ensured through hole-shaft matching. The rotating frame of the processing machine frame is matched with the crossed roller bearing inner ring through a hole shaft to ensure coaxiality.
The front disc frame and the rear disc frame of the walking frame are connected with the groove-shaped frame A through bolts and positioning pins. The driving wheel is directly arranged on an output shaft of the walking motor through a set screw. The walking motor is installed on the L-shaped installation frame through bolts. The L-shaped mounting rack is mounted on a groove-shaped rack A of the walking rack through bolts. The hinged support is installed on the groove-shaped frame A through a bolt, and the tensioning wheel is installed on the middle section of the pressure rod through a bolt. The bull eye bearing is installed on the indexing rack through bolts.
The indexing motor is arranged on the indexing rack through a bolt; the cylindrical pin is arranged in the end face hole of the drive plate in an interference fit manner; the driving plate is directly arranged on an output shaft of the indexing motor through a set screw; the crossed roller bearing fixes the bearing outer ring and the indexing frame through bolts; the grooved wheel is arranged in a threaded hole of the inner ring of the crossed roller bearing through a bolt;
the groove-shaped frame B of the processing machine frame is fixedly connected with the inner ring of the crossed roller bearing through a bolt, and the coaxiality of the groove-shaped frame B and the crossed roller bearing is ensured by taking the revolving frame as an intermediate positioning element; the upper anchor ear is connected with the lower anchor ear through a bolt; the fisheye bearing is arranged on the processing rack B through bolts and nuts; the swing cylinder is installed on a groove-shaped frame B of the processing machine frame through a bolt.
The working states of the parts of the invention are as follows:
the driving wheel and the tension wheel are arranged in the groove of the pipeline rifling when in work; the external thread bearing is arranged in the groove of the rifling of the pipeline when working; when the ball of the bull eye bearing works, the ball is arranged on a pipeline rifling boss; the rubber head screw is arranged in the groove of the rifling of the pipeline when working; the laser facula of the right-angle photoelectric switch is in the groove of the rifling of the pipeline when working; when the grinding brush cutter works, the grinding brush cutter is coincided with rifling grooves of the pipeline containing intersecting holes.
A method for processing the edge of an intersecting hole of a long pipe part with a large depth-diameter ratio utilizes a device for processing the edge of the intersecting hole of the long pipe part with the large depth-diameter ratio, and comprises the following steps:
A. and (3) placing the intersection hole edge processing device into the pipeline, driving the driving wheel by the traveling unit, and traveling along the rifling of the pipeline under the positive pressure provided by the tension wheel.
B. Because the light beam of the right-angle photoelectric switch always points to the rifling of the pipeline with the intersecting hole, when the light beam reaches the position of the intersecting hole, the light beam of the right-angle photoelectric switch also points to the intersecting hole, and because the intersecting hole has no pipeline wall, the right-angle photoelectric switch sends a switching signal to an external control system.
C. And after receiving the switching signal, the control system controls the walking motor to stop rotating, and then controls the jacking cylinder to extend out of the piston rod to the inner wall of the pipeline so as to fix the whole device in the pipeline.
D. The control system starts to control the pneumatic motor of the right-angle output shaft to drive the abrasive brush cutter to rotate.
E. The control system starts the processing process: and a piston rod of the swing cylinder is controlled to extend to drive the grinding brush cutter to be pressed downwards to finish feeding processing.
F. After the machining is finished, the control system controls the piston rod of the swing air cylinder to retract, and the abrasive brush cutter restores to the original position under the action of the compression spring B.
G. The indexing motor drives the sheave mechanism to realize the rotation of a fixed angle, and when the right-angle photoelectric switch rotates to the position of the next intersected hole, the right-angle photoelectric switch sends a switching signal to an external control system to stop the indexing motor.
H. And D, repeating the processing procedures of the steps D to G until burrs of all the crossed holes are removed.
I. After the machining is finished, the surface quality of the machined hole is observed by using an industrial endoscope, and if no obvious burr exists, the walking motor rotates reversely, so that the whole device exits from the pipeline.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the radial positioning unit and the annular positioning unit, thereby realizing the accurate positioning of the crossed holes of the pipeline with the deep and long tube bore line type;
2. because the indexing scheme of the sheave mechanism is adopted, the continuous processing of circumferentially uniformly distributed holes can be realized only by using a simple direct-current speed reducing motor;
3. because the invention adopts the bolt connection of each unit, the installation is mutually independent, and the device is convenient to overhaul and maintain.
4. The pneumatic right-angle motor adopted by the invention has high rotating speed, can realize higher surface processing quality, has high power and high processing efficiency, liberates the labor force of workers and improves the production efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
FIG. 2 is a schematic diagram of the operation of the apparatus of the present invention.
Fig. 3 is a schematic structural view of the walking unit.
Fig. 4 is a schematic diagram of a Geneva gear.
Fig. 5 is a schematic structural view of a processing unit.
Fig. 6 is a schematic view of a motor assembly.
Fig. 7 is a bottom view of fig. 1.
Fig. 8 is a schematic view of the machining unit and the indexing unit.
In the figure: 1. an abrasive brush cutter; 2. an industrial endoscope; 3. a right-angle photoelectric switch; 4. a trough frame B; 5. a swing cylinder; 6. a fisheye bearing; 7. a revolving frame; 8. a bull's eye bearing; 9. a cylindrical pin; 10. a dial; 11. a front disc rack; 12. an indexing motor; 13. compressing the spring A; 14. a tension wheel; 15. rotating the pin; 16. a hinged support; 17. a pressure lever; 18. a channel frame A; 19. a rear disc frame; 20. an aviation plug; 21. an externally threaded bearing; 22. a bearing mounting bracket; 23. a traveling motor; 24. an L-shaped mounting bracket; 25. a driving wheel; 26. a rubber head screw; 27. tightly pushing the air cylinder; 28. a dividing frame; 29. a crossed roller bearing; 30. a compression spring B; 31. a lower hoop; 32. an anchor ear is arranged; 33. a right angle output shaft pneumatic motor; 34. a grooved wheel; 35. an outer pressing plate; 36. an inner pressing plate; 37. a U-shaped clamp; 38. an adjusting screw; 39. an outer hexagon bolt; 40. an intersecting hole edge processing device; 41. intersecting holes; 42. a pipeline; 43. a rifling groove; 44. a rifling boss.
Detailed Description
The invention is further described below with reference to the accompanying drawings. As shown in fig. 1-8, a device for processing the edge of an intersecting hole of a long pipe part with a large depth-diameter ratio comprises a cylinder shell, a traveling unit, a circumferential positioning unit, a radial positioning unit, an indexing unit, a processing unit and an observation unit, wherein the processing unit is connected with the traveling unit through the indexing unit;
the walking unit comprises a walking frame, a walking motor 23, a driving wheel 25, a tension wheel 14, a compression spring A13 and an aviation plug 20, the walking frame comprises a front disc frame 11, a trough frame A18 and a rear disc frame 19, and the front end and the rear end of the trough frame A18 are fixedly connected with the front disc frame 11 and the rear disc frame 19 respectively; the walking motor 23 is fixedly mounted on the groove-shaped frame A18 through an L-shaped mounting frame 24, the walking motor 23 is a direct-current speed reducing motor with right-angle double output shafts, and each output shaft is provided with a driving wheel 25; the upper end of the compression spring A13 is connected with one end of the pressure lever 17, and the lower end is connected with the walking frame; the other end of the pressure lever 17 is rotatably connected with the hinged support 16 through a pin shaft; the hinged support 16 is fixedly arranged on a groove-shaped frame A18; the tension wheel 14 is fixedly arranged at the middle section of the pressure lever 17; the tension wheel 14 and the two driving wheels 25 are tangent to the inner wall of the pipeline 42 at the same time to form three-point support; the aviation plug 20 is mounted on the rear disc rack 19 and used for internal wire switching;
the processing unit comprises a processing rack, an abrasive brush cutter 1, a motor assembly and a cutter feeding mechanism, wherein the processing rack comprises a rotary frame 7 and a groove-shaped frame B4, and the rotary frame 7 is fixedly connected with the rear end of the groove-shaped frame B4; the motor assembly comprises a right-angle output shaft pneumatic motor 33, an outer pressing plate 35, an inner pressing plate 36, an adjusting screw 38, an upper hoop 32 and a lower hoop 31, wherein a long shaft section of the right-angle output shaft pneumatic motor 33 is fixed through the upper hoop 32 and the lower hoop 31, the rotating angle of the main shaft around the long shaft section is positioned through the adjusting screw 38, the upper hoop 32 is installed on a groove-shaped frame B4 through a cutter feeding mechanism, and the upper hoop 32 is rotatably connected with the cutter feeding mechanism; a threaded hole is formed in the short shaft section of the right-angle output shaft pneumatic motor 33, a key groove is formed in the end part of the short shaft section, the abrasive brush cutter 1 is installed at the end part of the short shaft section through an outer pressing plate 35 and an inner pressing plate 36, and the abrasive brush cutter 1 is located between the outer pressing plate 35 and the inner pressing plate 36; the inner pressing plate 36 is installed in a key groove at the end part of the short shaft section through a key, and the outer pressing plate 35 is installed in a threaded hole in the short shaft section through a bolt;
the cutter feeding mechanism comprises a swing cylinder 5, a fisheye bearing 6 and a compression spring B30, wherein the swing cylinder 5 is fixedly arranged on a groove-shaped frame B4; 2 fisheye bearings 6 are arranged on the groove-shaped frame B4; the 2 fisheye bearings 6 are connected through a rotating pin 15, the upper part of an upper hoop 32 in the motor assembly is provided with a support lug, and the support lug is connected with an inner hole of the fisheye bearing 6 through the rotating pin 15 to form a rotating pair; the rear end of the long shaft section of the right-angle output shaft pneumatic motor 33 is connected with a compression spring B30, and the front side of the upper part of the upper hoop 32 is contacted with an outer hexagon bolt 39 on the piston rod of the swing cylinder 5; the upper end of the compression spring B30 is fixedly connected with the slotted frame B4; when the piston rod of the swing cylinder 5 extends, the outer hexagon bolt 39 is driven to press the front side of the upper anchor ear 32 downwards, so that the abrasive brush cutter 1 is fed downwards, and meanwhile, the compression spring B30 is compressed; different feeding amounts of the abrasive brush cutter 1 are realized by adjusting the screwing-in depth of the outer hexagon bolt 39; when the piston rod of the swing cylinder 5 retracts, the compression spring B30 rebounds to retract the abrasive brush cutter 1;
the annular positioning unit comprises 4 external thread bearings 21 and right-angle photoelectric switches 3, the number of the external thread bearings 21 is 4, the external thread bearings are respectively installed on the end surfaces of the front disc frame 11 and the rear disc frame 19 in pairs through bearing installation frames 22, and the two external thread bearings 21 on the same end surface are symmetrically installed; the external thread bearing 21 is deeply inserted into the rifling groove 43 of the pipeline 42 for circumferential positioning; the right-angle photoelectric switch 3 is arranged on the groove-shaped frame B4, and the central line of the light beam points to the central line of the rifling groove 43 of the pipeline 42;
the radial positioning unit comprises two jacking cylinders 27 and rubber head screws 26, the jacking cylinders 27 are thin cylinders, piston rods of the jacking cylinders 27 are of an internal thread type, the jacking cylinders 27 are 2 and are fixedly installed on a groove-shaped frame A18 along the length direction of the groove-shaped frame A18, and the rubber head screws 26 are installed in threaded holes of the piston rods and are locked through nuts; the rubber head screw 26 is used for preventing the inner wall of the pipeline 42 from being damaged by overlarge jacking force; the extension directions of the piston rods of the two jacking cylinders 27 are opposite; the axial installation distance of the two jacking cylinders 27 is calculated according to the rifling degree of the pipeline 42, and the center line of the piston rod is ensured to point to the center of the corresponding rifling groove 43;
the indexing unit comprises an indexing frame 28, a crossed roller bearing 29, a geneva gear, an indexing motor 12 and a bull's eye bearing 8; the indexing frame 28 is of a rotary box structure, the front end of the indexing frame 28 is fixedly connected with the rotary frame 7 through a crossed roller bearing 29, and the rear end of the indexing frame 28 is connected with the front disc frame 11; the inner ring of the crossed roller bearing 29 is fixedly connected with a sheave mechanism; the number of the grooves of the sheave mechanism is the same as that of the holes to be processed on the same radial section in the pipeline 42; the indexing motor 12 is mounted on the indexing frame 28 and is used for driving the sheave mechanism; the number of the bull eye bearings 8 is 3, the bull eye bearings are uniformly distributed along the circumferential direction of the indexing rack 28, the outer end of each bull eye bearing 8 is provided with a supporting metal ball, and the supporting metal balls are in contact with the inner wall of the pipeline 42; the indexing motor 12 is a direct current speed reducing motor;
the observation unit comprises an industrial endoscope 2, the industrial endoscope 2 is arranged on a groove-shaped frame B4 through a U-shaped clamp 37, a lens of the industrial endoscope 2 is arranged on the side surface, and the distance between the lens and the inner wall of the pipeline 42 is larger than the focal length of the lens;
the barrel shell comprises a processing barrel shell and a walking barrel shell, the rear end of the processing barrel shell is fixedly installed on a rotary frame 7 of the processing rack, and two ends of the walking barrel shell are respectively and fixedly installed on a front disc frame 11 and a rear disc frame 19 of the walking rack.
Further, two sides of the outer pressing plate 35 are respectively provided with a parallel plane for clamping by a wrench.
Further, an included angle between the axis of the main shaft of the walking motor 23 and the central axis of the pipeline 42 is equal to an included angle between the rifling of the pipeline 42 and the central axis of the pipeline 42; the included angle between the connecting line of the inner holes of the 2 fisheye bearings 6 and the end surface of the revolving frame 7 is equal to the included angle between the rifling of the pipeline 42 and the central axis of the pipeline 42.
Further, the tension force generated by the compression spring a13 on the tension wheel 14 is more than 2 times of the gravity of the whole device; the jacking force output by the jacking cylinder 27 is 3-5 times of the gravity of the whole device.
Further, the connecting line of the central points of the two driving wheels 25 and the central point of the tension wheel 14 are on the same axial section of the pipeline 42, and the connecting line between the central point of the tension wheel 14 and the central point of the connecting line of the central points of the two driving wheels 25 is perpendicular to the connecting line of the central points of the two driving wheels 25.
Further, the axial distance between the two jacking cylinders 27 is an integral multiple of the axial distance between the two adjacent rifling lines.
Further, the outer diameter of the male threaded bearing 21 is smaller than the width of the rifling groove 43 in the radial section.
Further, the right-angle photoelectric switch 3, the abrasive brush cutter 1 and the industrial endoscope 2 are arranged in the same plane passing through the central axis of the pipeline 42, and the normal line of the lens on the side surface of the industrial endoscope 2 points to a hole to be processed, so that when the abrasive brush cutter 1 is processed, the right-angle photoelectric switch 3 and the industrial endoscope 2 are positioned and observe the hole to be processed;
the mounting hole of the right-angle photoelectric switch 3 of the groove-shaped frame B4 is a waist-shaped hole, and the waist-shaped hole is used for adjusting the radial angle to ensure that the light beam of the right-angle photoelectric switch 3 is aligned with the center of the processed hole;
the industrial endoscope 2 is arranged on the U-shaped clamp 37; the U-shaped clamp 37 is fixedly arranged on the processing frame B.
Further, the sheave 34 of the sheave mechanism is fixedly connected with the inner ring of the crossed roller bearing 29; a driving plate 10 of the geneva mechanism is fixedly connected with an output shaft of an indexing motor 12; the end surface of the drive plate 10 is provided with a cylindrical pin 9 in interference fit;
further, the traveling cylinder case is mounted on the front disc frame 11 and the rear disc frame 19 of the traveling frame by bolts. The processing barrel shell is arranged on a rotary frame 7 of the processing machine frame through a bolt. And the bearing mounting frame 22 of the annular positioning unit is mounted on the front disc frame 11 and the rear disc frame 19 of the walking frame through bolts. The jacking cylinder 27 of the radial positioning unit is mounted on a trough frame A18 of the walking frame through a bolt. The right-angle photoelectric switch 3 of the annular positioning unit is directly installed on a groove-shaped frame B4 of the processing rack through a bolt. The dividing machine frame 28 of the dividing unit is mounted on the front disc frame 11 of the walking machine frame through bolts, and the coaxiality of the two is ensured through hole-shaft matching. The rotating frame 7 of the processing machine frame is matched with the inner ring of the crossed roller bearing 29 through a hole shaft to ensure the coaxiality.
The front disk frame 11 and the rear disk frame 19 of the walking frame are connected with the groove-shaped frame A18 through bolts and positioning pins. The driving wheel 25 is directly mounted on the output shaft of the traveling motor 23 through a set screw. The walking motor 23 is mounted on the L-shaped mounting frame 24 through bolts. The L-shaped mounting frame 24 is mounted on a slotted frame A18 of the walking frame through bolts. The hinged support 16 is mounted on the groove-shaped frame A18 through a bolt, and the tension wheel 14 is mounted on the middle section of the pressure lever 17 through a bolt. The bull's eye bearing 8 is mounted on the indexing frame 28 by bolts.
The indexing motor 12 is mounted on the indexing frame 28 through bolts; the cylindrical pin 9 is arranged in an end face hole of the drive plate 10 in an interference fit manner; the driving plate 10 is directly arranged on an output shaft of the indexing motor 12 through a set screw; the crossed roller bearing 29 fixes the bearing outer ring and the indexing frame 28 through bolts; the grooved wheel 34 is installed in a threaded hole of an inner ring of the crossed roller bearing 29 through a bolt;
the groove-shaped frame B4 of the processing machine frame is fixedly connected with the inner ring of the crossed roller bearing 29 through bolts, and the coaxiality of the groove-shaped frame B4 and the crossed roller bearing 29 is ensured by taking the revolving frame 7 as a middle positioning element; the upper anchor ear 32 is connected with the lower anchor ear 31 through a bolt; the fisheye bearing 6 is arranged on the processing rack B through bolts and nuts; the swing cylinder 5 is mounted on a groove frame B4 of the processing frame through a bolt.
The working states of the parts of the invention are as follows:
the driving wheel 25 and the tension wheel 14 are arranged in the rifling groove 43 of the pipeline 42 when in work; the external thread bearing 21 is arranged in the rifling groove 43 of the pipeline 42 when in work; the balls of the bull's eye bearing 8 should be on the rifling boss 44 of the tube 42 during operation; the rubber head screw 26 should be in the rifling groove 43 of the tube 42 when in operation; the laser facula of the right-angle photoelectric switch 3 is in the rifling groove 43 of the pipeline 42 when working; the abrasive brush cutter 1 is operated to coincide with the rifling grooves 43 of the conduit 42 containing the intersecting holes 41.
A method for processing the edge of an intersecting hole of a long pipe part with a large depth-diameter ratio utilizes a device for processing the edge of the intersecting hole of the long pipe part with the large depth-diameter ratio to process the intersecting hole, and comprises the following steps:
A. the intersection hole edge processing device 40 is placed in the pipeline 42, the walking unit drives the driving wheel 25 to walk along the rifling of the pipeline 42 under the positive pressure provided by the tension wheel 14.
B. Because the light beam of the right-angle photoelectric switch 3 always points to the rifling of the pipeline 42 with the intersecting hole 41, when the light beam reaches the position of the intersecting hole 41, the light beam of the right-angle photoelectric switch 3 also points to the intersecting hole 41, and because no pipeline wall exists at the intersecting hole 41, the right-angle photoelectric switch 3 sends a switching signal to an external control system.
C. The control system receives the switching signal and then controls the walking motor 23 to stop rotating, and then controls the jacking cylinder 27 to extend out of the piston rod to the inner wall of the pipeline 42 so as to fix the whole device in the pipeline 42.
D. The control system starts to control the right-angle output shaft pneumatic motor 33 to drive the abrasive material brush cutter 1 to rotate.
E. The control system starts the processing process: and a piston rod of the swing cylinder 5 is controlled to extend to drive the grinding brush cutter 1 to be pressed downwards to finish feeding processing.
F. After the machining is finished, the control system controls the piston rod of the swing cylinder 5 to retract, and the abrasive brush cutter 1 is restored to the original position under the action of the compression spring B30.
G. The indexing motor 12 drives the grooved wheel 34 mechanism to realize the rotation at a fixed angle, and when the right-angle photoelectric switch 3 rotates to the position of the next intersecting hole 41, the right-angle photoelectric switch 3 sends a switching signal to an external control system, so that the indexing motor 12 stops rotating.
H. And D, repeating the machining process of the steps G until all burrs of the crossed holes 41 are removed.
I. After the machining is completed, the surface quality of the machined hole is observed by using the industrial endoscope 2, and if no obvious burr exists, the walking motor 23 rotates reversely, so that the whole device is withdrawn from the pipeline 42.
The front-to-back direction in the description of the present invention is the same as the forward and backward directions of the entire apparatus.
The present invention is not limited to the embodiment, and any equivalent idea or change within the technical scope of the present invention is to be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an intersection hole edge processingequipment of big depth-diameter ratio long tube part which characterized in that: the device comprises a cylinder shell, a walking unit, an annular positioning unit, a radial positioning unit, an indexing unit, a processing unit and an observation unit, wherein the processing unit is connected with the walking unit through the indexing unit;
the walking unit comprises a walking frame, a walking motor (23), a driving wheel (25), a tension wheel (14), a compression spring A (13) and an aviation plug (20), the walking frame comprises a front disc rack (11), a trough-shaped rack A (18) and a rear disc rack (19), and the front end and the rear end of the trough-shaped rack A (18) are fixedly connected with the front disc rack (11) and the rear disc rack (19) respectively; the walking motor (23) is fixedly arranged on the groove-shaped frame A (18) through an L-shaped mounting frame (24), the walking motor (23) is a direct-current speed reducing motor with a right angle and double output shafts, and each output shaft is provided with a driving wheel (25); the upper end of the compression spring A (13) is connected with one end of a compression bar (17), and the lower end of the compression spring A is connected with the walking rack; the other end of the pressure lever (17) is rotatably connected with the hinged support (16) through a pin shaft; the hinged support (16) is fixedly arranged on the groove-shaped frame A (18); the tension wheel (14) is fixedly arranged at the middle section of the pressure lever (17); the tension wheel (14) and the two driving wheels (25) are tangent to the inner wall of the pipeline (42) at the same time to form three-point support; the aviation plug (20) is mounted on the rear disc rack (19) and used for internal wire switching;
the processing unit comprises a processing rack, an abrasive brush cutter (1), a motor assembly and a cutter feeding mechanism, the processing rack comprises a rotary frame (7) and a groove-shaped frame B (4), and the rotary frame (7) is fixedly connected with the rear end of the groove-shaped frame B (4); the motor assembly comprises a right-angle output shaft pneumatic motor (33), an outer pressing plate (35), an inner pressing plate (36), an adjusting screw (38), an upper hoop (32) and a lower hoop (31), wherein a long shaft section of the right-angle output shaft pneumatic motor (33) is fixed through the upper hoop (32) and the lower hoop (31), a rotating angle of a main shaft around the long shaft section is positioned through the adjusting screw (38), the upper hoop (32) is installed on the groove-shaped frame B (4) through a cutter feeding mechanism, and the upper hoop (32) is rotatably connected with the cutter feeding mechanism; a threaded hole is formed in the short shaft section of the right-angle output shaft pneumatic motor (33), a key groove is formed in the end part of the short shaft section, the abrasive brush cutter (1) is installed at the end part of the short shaft section through an outer pressing plate (35) and an inner pressing plate (36), and the abrasive brush cutter (1) is located between the outer pressing plate (35) and the inner pressing plate (36); the inner pressure plate (36) is installed in a key groove at the end part of the short shaft section through a key, and the outer pressure plate (35) is installed in a threaded hole in the short shaft section through a bolt;
the cutter feeding mechanism comprises a swing cylinder (5), a fisheye bearing (6) and a compression spring B (30), and the swing cylinder (5) is fixedly arranged on the groove-shaped frame B (4); 2 fisheye bearings (6) are arranged on the groove-shaped frame B (4); the 2 fisheye bearings (6) are connected through a rotating pin (15), the upper part of an upper hoop (32) in the motor assembly is provided with a support lug, and the support lug is connected with an inner hole of the fisheye bearing (6) through the rotating pin (15) to form a rotating pair; the rear end of a long shaft section of the right-angle output shaft pneumatic motor (33) is connected with a compression spring B (30), and the front side of the upper part of the upper hoop (32) is contacted with an outer hexagon bolt (39) on a piston rod of the swing cylinder (5); the upper end of the compression spring B (30) is fixedly connected with the groove-shaped frame B (4); when a piston rod of the swing cylinder (5) extends, an outer hexagon bolt (39) is driven to press the front side of the upper anchor ear (32) downwards, so that the abrasive brush cutter (1) is fed downwards, and meanwhile, a compression spring B (30) is compressed; different feeding amounts of the abrasive brush cutter (1) are realized by adjusting the screwing-in depth of the outer hexagon bolt (39); when a piston rod of the swing cylinder (5) retracts, the compression spring B (30) rebounds to retract the abrasive brush cutter (1);
the annular positioning unit comprises external thread bearings (21) and right-angle photoelectric switches (3), wherein the number of the external thread bearings (21) is 4, the external thread bearings (21) are installed on the end faces of the front disc frame (11) and the rear disc frame (19) in pairs through bearing installation frames (22), and the two external thread bearings (21) on the same end face are symmetrically installed; the external thread bearing (21) is deeply inserted into a rifling groove (43) of the pipeline (42) and used for circumferential positioning; the right-angle photoelectric switch (3) is arranged on the groove-shaped frame B (4), and the central line of the light beam points to the central line of the rifling groove (43) of the pipeline (42);
the radial positioning unit comprises two jacking cylinders (27) and rubber head screws (26), the jacking cylinders (27) are thin cylinders, piston rods of the jacking cylinders (27) are of an internal thread type, the number of the jacking cylinders (27) is 2, the jacking cylinders are fixedly installed on the groove-shaped frame A (18) along the length direction of the groove-shaped frame A (18), and the rubber head screws (26) are installed in threaded holes of the piston rods and are locked through nuts; the rubber head screw (26) is used for preventing the inner wall of the pipeline (42) from being damaged by overlarge jacking force; the extending directions of the piston rods of the two jacking cylinders (27) are opposite; the axial installation distance of the two jacking cylinders (27) is calculated according to the rifling degree of the pipeline (42), and the center line of the piston rod is ensured to point to the center of the corresponding rifling groove (43);
the indexing unit comprises an indexing frame (28), a crossed roller bearing (29), a geneva gear, an indexing motor (12) and a bull eye bearing (8); the indexing frame (28) is of a rotary box structure, the front end of the indexing frame (28) is fixedly connected with the rotary frame (7) through a crossed roller bearing (29), and the rear end of the indexing frame is connected with the front disc frame (11); the inner ring of the crossed roller bearing (29) is fixedly connected with the geneva gear; the number of the grooves of the sheave mechanism is the same as that of holes to be machined in the same radial section in the pipeline (42); the indexing motor (12) is arranged on the indexing frame (28) and is used for driving the sheave mechanism; the number of the bull eye bearings (8) is 3, the bull eye bearings are uniformly distributed along the circumferential direction of the indexing rack (28), the outer end of each bull eye bearing (8) is provided with a supporting metal ball, and the supporting metal balls are in contact with the inner wall of the pipeline (42); the indexing motor (12) is a direct-current speed reducing motor;
the observation unit comprises an industrial endoscope (2), the industrial endoscope (2) is installed on the groove-shaped frame B (4) through a U-shaped clamp (37), a lens of the industrial endoscope (2) is arranged on the side face, and the distance between the lens and the inner wall of the pipeline (42) is larger than the focal length of the lens;
the barrel shell comprises a processing barrel shell and a walking barrel shell, the rear end of the processing barrel shell is fixedly installed on a rotary frame (7) of the processing rack, and two ends of the walking barrel shell are respectively and fixedly installed on a front disk frame (11) and a rear disk frame (19) of the walking rack.
2. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: and parallel planes for clamping by a wrench are respectively arranged on two sides of the outer pressing plate (35).
3. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: an included angle between the main shaft axis of the walking motor (23) and the central axis of the pipeline (42) is equal to an included angle between the rifling of the pipeline (42) and the central axis of the pipeline (42); the included angle between the connecting line of the inner holes of the 2 fisheye bearings (6) and the end surface of the rotary frame (7) is equal to the included angle between the rifling of the pipeline (42) and the central axis of the pipeline (42).
4. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: the tension force generated by the compression spring A (13) to the tension wheel (14) is more than 2 times of the gravity of the whole device; the jacking force output by the jacking cylinder (27) is 3-5 times of the gravity of the whole device.
5. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: the connecting line of the central points of the two driving wheels (25) and the central point of the tension wheel (14) are positioned on the same axial section of the pipeline (42), and the connecting line between the central point of the tension wheel (14) and the central point of the connecting line of the central points of the two driving wheels (25) is vertical to the connecting line of the central points of the two driving wheels (25).
6. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: the axial distance of the two jacking cylinders (27) is integral multiple of the axial distance of the two adjacent rifling lines; the outer diameter of the externally threaded bearing (21) is smaller than the width of the rifling groove (43) in the radial section.
7. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: the right-angle photoelectric switch (3), the abrasive brush cutter (1) and the industrial endoscope (2) are arranged in the same plane passing through the central axis of the pipeline (42), the normal of the lens on the side surface of the industrial endoscope (2) points to a hole to be processed, and the right-angle photoelectric switch (3) and the industrial endoscope (2) are positioned and observe the hole to be processed when the abrasive brush cutter (1) is processed;
the mounting hole of the right-angle photoelectric switch (3) of the groove-shaped frame B (4) is a waist-shaped hole, and the waist-shaped hole is used for adjusting a radial angle to ensure that a light beam of the right-angle photoelectric switch (3) is aligned to the center of a processed hole;
the industrial endoscope (2) is arranged on the U-shaped clamp (37); and the U-shaped clamp (37) is fixedly arranged on the processing rack B.
8. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 1, wherein: a sheave (34) of the sheave mechanism is fixedly connected with an inner ring of the crossed roller bearing (29); a driving plate (10) of the geneva mechanism is fixedly connected with an output shaft of an indexing motor (12); the end surface of the drive plate (10) is provided with a cylindrical pin (9) in an interference fit manner.
9. The device for processing the edge of the intersected hole of the long pipe part with the large depth-diameter ratio as claimed in claim 8, wherein: the traveling cylinder shell is arranged on a front disc rack (11) and a rear disc rack (19) of the traveling rack through bolts; the processing barrel shell is arranged on a rotary frame (7) of the processing rack through a bolt; the bearing mounting rack (22) of the annular positioning unit is mounted on a front disc rack (11) and a rear disc rack (19) of the walking rack through bolts; the jacking cylinder (27) of the radial positioning unit is mounted on a groove-shaped frame A (18) of the walking frame through bolts; the right-angle photoelectric switch (3) of the annular positioning unit is directly installed on a groove-shaped frame B (4) of the processing rack through a bolt; an indexing rack (28) of the indexing unit is arranged on a front disc rack (11) of the walking rack through bolts, and the coaxiality of the indexing rack and the front disc rack is ensured through hole-shaft matching; the rotating frame (7) of the processing rack is matched with an inner ring of a crossed roller bearing (29) through a hole shaft to ensure coaxiality;
the front disc rack (11) and the rear disc rack (19) of the walking frame are connected with the groove-shaped rack A (18) through bolts and positioning pins; the driving wheel (25) is directly arranged on an output shaft of the walking motor (23) through a set screw; the walking motor (23) is mounted on the L-shaped mounting rack (24) through bolts; the L-shaped mounting rack (24) is mounted on a trough-shaped rack A (18) of the walking rack through bolts; the hinged support (16) is mounted on the groove-shaped frame A (18) through a bolt, and the tension wheel (14) is mounted in the middle section of the pressure lever (17) through a bolt; the bullseye bearing (8) is installed on the indexing rack (28) through a bolt;
the indexing motor (12) is arranged on the indexing rack (28) through a bolt; the cylindrical pin (9) is arranged in an end face hole of the drive plate (10) in an interference fit manner; the driving plate (10) is directly arranged on an output shaft of the indexing motor (12) through a set screw; the crossed roller bearing (29) fixes the bearing outer ring and the indexing frame (28) through bolts; the grooved wheel (34) is installed in a threaded hole of an inner ring of the crossed roller bearing (29) through a bolt;
the groove-shaped frame B (4) of the processing machine frame is fixedly connected with an inner ring of the crossed roller bearing (29) through a bolt, and the coaxiality of the groove-shaped frame B (4) and the crossed roller bearing (29) is ensured by taking the rotary frame (7) as a middle positioning element; the upper anchor ear (32) is connected with the lower anchor ear (31) through a bolt; the fisheye bearing (6) is arranged on the processing rack B through bolts and nuts; the swing cylinder (5) is mounted on a groove-shaped frame B (4) of the processing rack through bolts.
10. A method for processing the edge of an intersecting hole of a long pipe part with a large depth-to-diameter ratio by using the device for processing the edge of the intersecting hole of the long pipe part with the large depth-to-diameter ratio as claimed in claim 1, which comprises the following steps:
A. placing the intersection hole edge processing device (40) into a pipeline (42), driving the driving wheel (25) by the traveling unit, and traveling along the rifling of the pipeline (42) under the positive pressure provided by the tension wheel (14);
B. because the light beam of the right-angle photoelectric switch (3) always points to the rifling of the pipeline (42) with the intersecting hole (41), when the light beam reaches the position of the intersecting hole (41), the light beam of the right-angle photoelectric switch (3) also points to the intersecting hole (41), and because no pipeline wall exists at the intersecting hole (41), the right-angle photoelectric switch (3) sends a switching signal to an external control system;
C. the control system controls the walking motor (23) to stop rotating after receiving the switching signal, and then controls the jacking cylinder (27) to extend out of the piston rod to the inner wall of the pipeline (42) so as to fix the whole device in the pipeline (42);
D. the control system starts to control the pneumatic motor (33) of the right-angle output shaft to drive the abrasive brush cutter (1) to rotate;
E. the control system starts the processing process: the piston rod of the swing cylinder (5) is controlled to extend to drive the grinding brush cutter (1) to press down to finish feeding processing;
F. after the machining is finished, the control system controls the piston rod of the swing cylinder (5) to retract, and the abrasive brush cutter (1) restores to the original position under the action of the compression spring B (30);
G. the indexing motor (12) drives the grooved wheel (34) mechanism to realize fixed-angle rotation, and when the right-angle photoelectric switch (3) rotates to the position of the next intersecting hole (41), the right-angle photoelectric switch (3) sends a switching signal to an external control system to stop the indexing motor (12);
H. d, repeating the machining process of the step G until burrs of all the crossed holes (41) are removed;
I. after the machining is finished, the surface quality of the machined hole is observed by using an industrial endoscope (2), and if no obvious burr exists, the walking motor (23) rotates reversely, so that the whole device is withdrawn from the pipeline (42).
CN202110791521.3A 2021-07-13 2021-07-13 Method and device for processing edge of intersecting hole of long pipe part with large depth-diameter ratio Active CN113427327B (en)

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