CN111618456B - Intelligent pneumatic chuck and laser cutting machine - Google Patents

Intelligent pneumatic chuck and laser cutting machine Download PDF

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Publication number
CN111618456B
CN111618456B CN202010425072.6A CN202010425072A CN111618456B CN 111618456 B CN111618456 B CN 111618456B CN 202010425072 A CN202010425072 A CN 202010425072A CN 111618456 B CN111618456 B CN 111618456B
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China
Prior art keywords
air cylinder
piston rod
rotating
air
clamping
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CN111618456A (en
Inventor
麦裕强
常勇
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Guangdong Hongshi Laser Technology Co Ltd
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Guangdong Hongshi Laser Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention discloses an intelligent pneumatic chuck and a laser cutting machine, wherein the intelligent pneumatic chuck comprises an installation shell, a rotating body assembly and a driving device; the rotating body assembly is arranged in the mounting shell, the driving device is arranged at the rear end of the mounting shell and is connected with the rotating body assembly, the rotating body assembly comprises a rotating seat, an air cylinder and a plurality of clamping assemblies, the clamping assemblies are uniformly arranged at the front end of the rotating seat at equal angles along the circumferential direction, the air cylinder is arranged in the rotating seat, and a piston rod of the air cylinder is connected with the clamping assemblies; and a detection mechanism is also arranged in the rotary seat and is connected with a piston rod of the air cylinder. The invention has the following beneficial effects: when the piston rod drive of cylinder presss from both sides when dress subassembly opens and shuts, detection mechanism detectable cylinder piston rod's stroke is learned through the analysis and is pressed from both sides the state of dress subassembly centre gripping tubular product, and the problem of making mistakes of flat tubular product of the feedback or tubular product model in time avoids laser cutting mistake or damages the laser cutting head, improves laser cutting efficiency and reduction in production cost.

Description

Intelligent pneumatic chuck and laser cutting machine
Technical Field
The invention relates to the technical field of laser cutting, in particular to an intelligent pneumatic chuck and a laser cutting machine.
Background
Laser cutting has the advantages of smooth cutting surface, high cutting efficiency, high cutting quality and the like, so the laser cutting is widely applied, the laser cutting machine is just one of the application examples, generally, the laser cutting machine cuts after clamping a pipe through a chuck, however, the current chucks on the market lack a stroke detection device, when a thin pipe is processed, the phenomenon that the chuck clamps the flat pipe easily occurs, or the model of the pipe is mistaken due to manual misoperation or the problem of a pipe feeding machine, the laser cutting head is damaged, and finally the machine needs to be stopped, thereby causing the problems of low laser cutting efficiency and high production cost.
For example, CN103785872B discloses an electric chuck of a laser pipe cutting machine, which includes a rotating base, a power device for driving the rotating base to rotate, and a remote controller, wherein the rotating base is provided with a four-jaw clamping mechanism, an internal control module integrated on the rotating base, and a wireless signal transceiver installed on the internal control module; each jaw clamping mechanism of the four-jaw clamping east mechanism comprises a speed reducing motor, RGS linear sliding rails, a limit switch sensor, a linear displacement sensor and a roller seat provided with a roller, and the four RGS linear sliding rails are symmetrically fixed on a rotating seat by taking the center of a pipe penetrating through hole as the center. This electrodynamic type chuck of laser pipe cutting machine allows the poling through-hole that tubular product used, can improve tubular product machining precision, can extensively adapt to the tight requirement of clamp of multiple pipe diameter pipe and special-shaped tubular product to chucking power is adjustable, can realize chuck pine card automatic control, and degree of automation is high, and work efficiency is high, nevertheless, only is applicable to the electrodynamic type chuck, can not be applied to on the pneumatic type chuck.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an intelligent air chuck, which includes an installation housing, a rotator assembly, a driving device and a detection mechanism, and has the advantages of detecting a stroke, improving laser cutting efficiency and reducing production cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an intelligent pneumatic chuck comprises a mounting shell, a rotating body assembly and a driving device; the rotating body assembly is arranged in the mounting shell, the driving device is arranged at the rear end of the mounting shell and is connected with the rotating body assembly, the rotating body assembly comprises a rotating seat, an air cylinder and a plurality of clamping assemblies, the clamping assemblies are arranged at the front end of the rotating seat and are uniformly distributed at equal angles along the circumferential direction of the rotating seat, the air cylinder is arranged in the rotating seat, and a piston rod of the air cylinder is connected with the clamping assemblies; and a detection mechanism is further arranged in the rotary seat and is connected with the piston rod of the air cylinder.
Preferably, the detection mechanism comprises a displacement sensor and a computer board, a piston rod of the air cylinder is connected with the displacement sensor, the displacement sensor is electrically connected with the computer board, when the piston rod of the air cylinder drives the clamping assembly to open and close in a telescopic mode, the displacement sensor can detect the stroke of the piston rod of the air cylinder, the displacement sensor transmits the stroke information of the piston rod to the computer board, the state of the clamping assembly clamping the pipe can be indirectly known through analysis of the computer board, and therefore the size of the pipe can be analyzed.
Preferably, the detection mechanism further comprises a plurality of battery packs, the plurality of battery packs are arranged in the rotating seat and electrically connected with the computer board, and through the arrangement, the battery packs provide power for normal operation of the computer board, can be used for months for the normal use of the computer board, and do not need to be frequently disassembled and replaced, and the battery packs and the computer board do not move relatively, so that the problem of winding of wires after the rotating body assembly rotates is not needed to be considered; if the computer board adopts an external power supply, a power supply ring needs to be arranged on the rotating seat, so that the production cost is increased, and the structure of the rotating body assembly is too complex.
Preferably, the front end of the rotary seat is provided with four clamping assemblies, that is, the front end of the rotary seat is provided with a first clamping assembly pair and a second clamping assembly pair, the cylinder comprises a first cylinder and a second cylinder, a piston rod of the first cylinder is connected with the first clamping assembly pair, a piston rod of the second cylinder is connected with the second clamping assembly pair, the displacement sensor comprises a first displacement sensor and a second displacement sensor, the piston rod of the first cylinder is connected with the first displacement sensor, and the piston rod of the second cylinder is connected with the second displacement sensor, so that the intelligent pneumatic chuck is a four-clamping assembly chuck, can clamp a pipe with an extremely small diameter, and theoretically can clamp a pipe with a zero diameter; the clamping device can clamp various pipes, can clamp circular pipes, rectangular pipes and special pipes, and has strong applicability; the dimensions of the pipe can also be measured from two perpendicular directions.
Preferably, the rotating body assembly further comprises a front cover plate, an inner synchronizing disc and an outer synchronizing disc, the inner synchronizing disc, the outer synchronizing disc and the front cover plate are sequentially arranged at the front end of the rotating seat, the air cylinder is hinged to the rotating seat, a piston rod of the first air cylinder is hinged to the inner synchronizing disc, a piston rod of the second air cylinder is hinged to the outer synchronizing disc, the clamping assembly is arranged on the end face of the front cover plate, a straight notch is formed in the front cover plate and is arranged corresponding to the clamping assembly, two centrosymmetric variable-track synchronizing grooves are formed in the inner synchronizing disc and the outer synchronizing disc, the clamping assembly comprises a driven column, the driven column sequentially penetrates through the corresponding straight notch and the variable-track synchronizing groove, and through the arrangement, the piston rod of the first air cylinder drives the inner synchronizing disc to rotate in a telescopic mode, the driven columns penetrate through the corresponding straight notch and the corresponding track-changing synchronous groove, and the inner synchronous disc drives the two opposite driven columns to move along the direction of the straight notch, so that the first clamping assemblies are driven to synchronously move towards or away from each other; in a similar way, the second air cylinder drives the second clamping components to synchronously move towards or away from each other.
Preferably, the clamping assembly further comprises a sliding block and a roller group, the sliding block is connected with the driven column, the sliding block is provided with a plurality of groups of mounting holes arranged at intervals along the radial direction of the front cover plate, the roller group is matched with the plurality of groups of mounting holes to realize adjustable connection between the roller group and the sliding block, and through the arrangement, when a pipe with a larger difference in size is processed, a group of proper mounting holes is selected on the sliding block to be connected with the roller group according to the size of the pipe to be processed, so that the same roller group can be suitable for clamping pipes with different sizes, and the production cost is reduced; otherwise, the chuck needs to be provided with various roller groups, each roller group can only clamp the pipe in a certain range of size, the proper roller group is replaced according to the size of the pipe to be processed, and various roller groups are arranged, so that the production cost is increased.
Preferably, the clamping device further comprises an air path rotating mechanism, the air path rotating mechanism is arranged on the mounting shell and connected with the air cylinder, the air path rotating mechanism drives the air cylinder to work, and through the arrangement, the air path rotating mechanism synchronously drives the first air cylinder and the second air cylinder to work, so that the first clamping assembly pair and the second clamping assembly pair synchronously move.
Preferably, the track-variable synchronous groove comprises a plurality of linear grooves, two adjacent linear grooves are connected through an arc-shaped groove, the center of the synchronous disc extends along the vertical direction to form a Y axis, the included angle between each linear groove and the Y axis is 20-80 degrees, and the included angles between the plurality of linear grooves and the Y axis are sequentially decreased from the outer edge to the inner edge of the synchronous disc, by the arrangement, when the driven column approaches to the center of the synchronous disc, under the condition that the synchronous disc rotates at the same angle, the moving distance of the driven column along the radial direction is increased, the moving speed of the driven column along the radial direction is faster, the clamping force of the driven column is smaller, namely the clamping assembly moves from the far end point to the near end point along the radial direction of the rotating base, the moving speed of the clamping assembly is from slow to fast, and the clamping force of the clamping assembly is from large to small, under the same air pressure, the clamping force of the clamping assembly for clamping the large-diameter pipe is larger than that of the clamping assembly for clamping the small-diameter pipe, and the distribution of the clamping force of the intelligent pneumatic chuck is better met.
Preferably, a roller is arranged between the driven column and the track-changing synchronous groove, the roller is sleeved on the driven column, through the arrangement, when the cylinder drives the synchronous disc to rotate, the driven column is driven to act through the matching of the track-changing synchronous groove and the driven column, and the roller is arranged between the driven column and the track-changing synchronous groove, so that on one hand, the synchronous disc drives the driven column to move; on the other hand, wear between the synchronizing disc and the driven column is reduced.
As preferred, drive arrangement includes the motor, the motor sets up on the installation casing, the output shaft of motor has the pinion, the rotator subassembly is close to the one end of motor is equipped with the gear wheel, is located the gear wheel with be equipped with adjusting gear between the pinion, adjusting gear respectively with the gear wheel with the pinion toothing, through setting up like this, generally drips, is equipped with fixed chuck and removal chuck on laser cutting machine's the lathe bed, is equipped with adjusting gear can adjust the pinion with centre-to-centre spacing between the gear wheel can adjust the mounted position of motor finally makes the preceding terminal surface of removal chuck can paste tightly the rear end face of fixed chuck carries out the pipe, reduces the loss of tubular product tails, further reduction in production cost.
Compared with the prior art, the invention has the beneficial technical effects that:
because intelligence air chuck is equipped with detection mechanism, works as the piston rod drive of cylinder when pressing from both sides the dress subassembly and opening and shutting, detection mechanism detectable the stroke of cylinder piston rod, detection mechanism learn through the analysis press from both sides the state of dress subassembly centre gripping tubular product, work as press from both sides the dress subassembly and press from both sides flat tubular product or tubular product model material loading and in time feed back when the error appears, avoid laser cutting to appear the error or damage laser cutting head, improve laser cutting efficiency and reduction in production cost.
The second purpose of the present invention is to provide a laser cutting machine, which includes the above-mentioned intelligent air chuck, and the laser cutting machine has all the beneficial effects of the intelligent air chuck because of including the intelligent air chuck, and the details are not repeated herein.
Drawings
FIG. 1 is an isometric schematic view of an embodiment of the invention;
FIG. 2 is a schematic isometric view of a portion of the structure of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 4 is an isometric schematic view of a rotating body assembly of an embodiment of the present invention;
FIG. 5 is a schematic side view of a rotating body assembly of an embodiment of the present invention;
FIG. 6 is an exploded schematic view of a spinner assembly in accordance with an embodiment of the invention;
FIG. 7 is an exploded view of another perspective of a rotator assembly according to an embodiment of the invention;
FIG. 8 is a schematic front view of an inner synchronization disc of an embodiment of the present invention;
FIG. 9 is a schematic view of the connection of the cylinder to the displacement sensor according to the embodiment of the present invention;
FIG. 10 is a schematic axial view of an air path rotation mechanism in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view, partially in section, of a rear view of an air path rotation mechanism in accordance with an embodiment of the present invention;
fig. 12 is a schematic cross-sectional view of an air path rotating mechanism according to an embodiment of the present invention;
fig. 13 is a schematic front view of a seal ring according to an embodiment of the present invention.
Wherein, the technical characteristics that each reference numeral refers to are as follows:
00', Y-axis; 10. installing a shell; 11. a mounting seat; 12. a sheet metal shell; 20. a rotating body assembly; 21. a rotating base; 22. an inner synchronization disc; 22.1, an apodized synchronization slot; 23. an outer synchronization disc; 24. a front cover plate; 24.1, a straight notch; 25. clamping the assembly; 25.1, driven column; 25.2, a sliding block; 25.3, pressing strips of the guide rails; 25.4, a limiting block; 25.5, roller groups; 26. a cylinder; 30. a drive device; 31. a motor; 32. a speed reducer; 33. a pinion gear; 34. an adjusting gear; 35. a bull gear; 40. a detection mechanism; 41. a computer board; 42. a battery pack; 43. a displacement sensor; 50. a gas circuit rotating mechanism; 51. fixing the disc; 51.1, fixing a disc groove; 51.2, bottom wall; 51.3, side walls; 51.4, a top wall; 52. rotating the disc; 52.1, rotating the disc groove; 53. an air port of the fixed disk; 54. rotating the disk air port; 55. a seal ring; 55.1, air holes; 56. a dust ring; 60. a rolling bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
Referring to fig. 1 to 13, the present embodiment discloses an intelligent pneumatic chuck, which includes a mounting housing 10, a rotating body assembly 20, and a driving device 30; the installation shell 10 comprises an installation seat 11 and a sheet metal shell 12, the sheet metal shell 12 is fixedly connected with the installation seat 11 to form a hollow cavity capable of accommodating the rotating body assembly 20, through holes for pipes to pass through are formed in the front end and the rear end of the installation seat 11, the rotating body assembly 20 is arranged in the installation shell 10, the driving device 30 is arranged at the rear end of the installation shell 10, the driving device 30 is connected with the rotating body assembly 20, the rotating body assembly 20 comprises a rotating seat 21, an air cylinder 26 and a plurality of clamping assemblies 25, the plurality of clamping assemblies 25 are arranged at the front end of the rotating seat 21, the plurality of clamping assemblies 25 are uniformly distributed at equal angles along the circumferential direction of the rotating seat 21, the air cylinder 26 is arranged in the rotating seat 21, and a piston rod of the air cylinder 26 is connected with the clamping assemblies 25; the rotating base 21 is further provided with a detection mechanism 40, the detection mechanism 40 is connected to the piston rod of the air cylinder 26, and the front end and the rear end of the above description are two ends along the axial direction of the rotating body assembly 20.
Because intelligent air chuck is equipped with detection mechanism 40, when the piston rod drive of cylinder 26 presss from both sides dress subassembly 25 open-close, the stroke of detection mechanism 40 detectable cylinder 26 piston rod, detection mechanism 40 learns the state of pressing from both sides dress subassembly 25 centre gripping tubular product through the analysis, but in time feedback when pressing from both sides dress subassembly 25 and press from both sides flat tubular product or tubular product lucky material loading mistake appearance error, avoid laser cutting mistake or damage laser cutting head, improve laser cutting efficiency and reduction in production cost.
Referring to fig. 6, 7 and 9, further specifically, the detecting mechanism 40 includes a displacement sensor 43 and a computer board 41, the displacement sensor 43 is fixedly connected to the cylinder 26 through a displacement sensor seat, a probe of the displacement sensor 43 is oriented in the same direction as and parallel to a piston rod of the cylinder 26, the piston rod of the cylinder 26 is fixedly connected to the probe through a pulling plate, the computer board 41 is fixedly disposed in the rotary seat 21, the displacement sensor 43 is electrically connected to the computer board 41, when the piston rod of the cylinder 26 extends and retracts to drive the clamping assembly 25 to open, the pulling plate drives the probe to move, i.e. the piston rod of the cylinder 26 and the probe act synchronously, so that the displacement sensor 43 can detect the stroke of the piston rod of the cylinder 26, the displacement sensor 43 transmits the stroke information of the piston rod of the cylinder 26 to the computer board 41 in the form of an electrical signal, and the state of the clamping assembly 25 clamping the tube can be indirectly known through the analysis of the computer board 41, thereby analyzing the size of the pipe.
Referring to fig. 6-7, in the present embodiment, the detecting mechanism 40 further includes a plurality of battery packs 42, the plurality of battery packs 42 are fixedly disposed in the rotating base 21, and the battery packs 42 are connected to the computer board 41, the battery packs 42 include battery boxes and a plurality of rechargeable batteries disposed in the battery boxes, the battery boxes are fixedly connected to the rotating base 21, the battery packs 42 provide power for normal operation of the computer board 41, the battery packs 42 can provide normal operation of the computer board 41 for several months, the rotating body assembly 20 does not need to be frequently detached for replacing the batteries, and the battery packs 42 and the computer board 41 move relatively to each other, so that the problem of winding of wires after the rotating body assembly 20 rotates does not need to be considered; if the computer board 41 is powered by an external power source, a power ring needs to be disposed on the rotating base 21, which increases the production cost and complicates the structure of the rotating body assembly 20.
Referring to fig. 1 to 5, in the present embodiment, four clamping assemblies 25 are disposed at the front end of the rotary base 21, and since the four clamping assemblies 25 are uniformly distributed at equal angles along the circumferential direction of the rotary base 21, that is, two pairs of opposite clamping assemblies 25 are disposed at the front end of the rotary base 21, the two pairs of opposite clamping assemblies 25 include a first clamping assembly and a second clamping assembly, the two opposite clamping assemblies 25 of the first clamping assembly are disposed in an axisymmetric manner, the two opposite clamping assemblies 25 of the second clamping assembly are disposed in an axisymmetric manner, the first clamping assembly is disposed at the outer side of the second clamping assembly, the air cylinder 26 includes a first air cylinder and a second air cylinder, a piston rod of the first air cylinder is connected to the first clamping assembly, a piston rod of the second air cylinder is connected to the second clamping assembly, the displacement sensor 43 includes a first displacement sensor 43 and a second displacement sensor 43, the piston rod of the first air cylinder is connected to the first displacement sensor 43, the piston rod of the second cylinder is connected with the second displacement sensor 43 in the same way as the above, and the connection is not repeated here, and the intelligent pneumatic chuck is a four-clamping assembly 25 chuck, so that not only can a pipe with a very small diameter be clamped, but also a pipe with a zero diameter can be theoretically clamped; the clamping device can clamp various pipes, can clamp circular pipes, rectangular pipes and special pipes, and has strong applicability; the dimensions of the pipe can also be measured from two perpendicular directions.
Referring to fig. 6-8, the rotating body assembly 20 further includes a front cover plate 24, an inner synchronizing plate 22 and an outer synchronizing plate 23, the front end of the rotating base 21 is sequentially provided with the inner synchronizing plate 22, the outer synchronizing plate 23 and the front cover plate 24, the inner synchronizing plate 22 and the outer synchronizing plate 23 are rotatably connected with the rotating base 21, the front cover plate 24 is fixedly connected with the rotating base 21, the first cylinder and the second cylinder are hinged with the rotating base 21, a piston rod of the first cylinder is hinged with the inner synchronizing plate 22, a piston rod of the second cylinder is hinged with the outer synchronizing plate 23, four clamping assemblies 25 are disposed on the end surface of the front cover plate 24, the front cover plate 24 is provided with four straight slots 24.1, the four straight slots 24.1 are equiangularly distributed along the circumferential direction of the front cover plate 24, that each straight slot 24.1 is arranged corresponding to each clamping assembly, the inner synchronizing plate 22 and the outer synchronizing plate 23 are provided with two centrosymmetric apodized synchronizing slots 22.1, the clamping assemblies 25 include driven columns 25.1, the driven columns 25.1 sequentially penetrate through the corresponding straight slot openings 24.1 and the track-changing synchronous slots 22.1, the piston rods of the first air cylinders telescopically drive the inner synchronous discs 22 to rotate, and the inner synchronous discs 22 drive the two opposite driven columns 25.1 to move along the direction of the straight slot openings 24.1 as the driven columns 25.1 penetrate through the corresponding straight slot openings 24.1 and the track-changing synchronous slots 22.1, so that the first clamping assemblies are driven to synchronously move in the opposite direction or in the opposite direction; similarly, the second cylinder drives the second clamping assembly to synchronously move in the opposite direction or in the opposite direction, the track line of the track-changing synchronous groove 22.1 is a gradual curve, such as an archimedes spiral line or an involute, and the track line of the circular arc synchronous groove is a circular arc line, so the track-changing synchronous groove 22.1 is set because the pressure angle pressure formed by the track-changing synchronous groove 22.1 on the clamping assembly 25 is different from that of the circular arc synchronous groove, and the clamping assembly 25 can be better pushed to move.
Referring to fig. 6-7, the clamping assembly 25 further includes a slider 25.2, guide rail pressing strips 25.3, a limiting block 25.4 and a roller train 25.5, four slots for mounting the clamping assembly 25 are circumferentially disposed on an end surface of the front cover plate 24, the four slots are uniformly distributed along the circumference of the front cover plate 24 at equal angles, the front cover plate 24 is provided with slots for positioning and mounting the clamping assembly 25, each slot is provided with a slider 25.2, the slider 25.2 is fixedly connected with the driven column 25.1, the slider 25.2 is provided with guide rail pressing strips 25.3, the guide rail pressing strips 25.3 include a first guide rail pressing strip 25.3 and a second guide rail pressing strip 25.3, the first guide rail pressing strip 25.3 and the second guide rail pressing strip 25.3 are respectively disposed on two sides of the slider 25.2 and fixedly connected with the front cover plate 24, the slider 25.2 can slide under the guide rail pressing strips 25.3 along the radial direction of the front cover plate 24, one end of the slider 25.2 near the center of the front cover plate 24 is provided with a plurality of sets of mounting holes spaced along the radial direction of the front cover plate 24, the roller group 25.5 is matched with a plurality of groups of mounting holes to realize adjustable connection between the roller group 25.5 and the sliding block 25.2, and the interval between the plurality of groups of mounting holes is smaller than the slidable stroke of the sliding block 25.2 along the radial direction of the front cover plate 24, so that the overlapping amount of clamping strokes exists when the roller group 25.5 is connected with different mounting holes selected and the sliding block 25.2, one side of each group of mounting holes far away from the center of the front cover plate 24 is provided with a groove, the roller group 25.5 is provided with a boss matched with the groove, when the roller group 25.5 is connected with the sliding block 25.2, the roller group 25.5 is convenient to be positioned and connected with the sliding block 25.2 through the matching of the boss and the groove, when a pipe with a larger difference in size is machined, a group of suitable mounting holes is selected on the sliding block 25.2 to be connected with the roller group 25.5, so that the same roller group 25.5 can be suitable for clamping pipes with different sizes, and the production cost is reduced; otherwise, the chuck needs to be equipped with various roller groups 25.5, each roller group 25.5 can only clamp the pipe in a certain range of size, the proper roller group 25.5 is replaced according to the size of the pipe to be processed, various roller groups 25.5 are arranged, so that the production cost is improved, the clamping assembly 25 of the embodiment adopts the roller group 25.5, the smooth surface of the roller can not form clamping traces on the surface of the pipe, the occurrence of clamping shell in the processing process can be reduced, the processing process is smoother, the length of the roller of the first clamping assembly is longer than that of the roller of the second clamping assembly, the length of the roller of the first clamping assembly is slightly larger than the maximum size of the opening of the special-shaped pipe to be processed by the intelligent pneumatic chuck, the special-shaped pipe can be clamped by facing the opening of the special-shaped pipe to the first clamping assembly without replacing the clamp, one end of the sliding block 25.2 far away from the center of the front cover plate 24 is provided with a limit step, the limiting block 25.4 is movably connected with the guide rail pressing strip 25.3, when the sliding block 25.2 slides towards the center of the front cover plate 24 until the limiting boss is abutted against the limiting block 25.4, the sliding block 25.2 is limited to further slide towards the center of the front cover plate 24, namely the sliding of the roller group 25.5 is limited, when a pipe with an ultrathin pipe wall is processed, for example, a pipe with a pipe wall thickness of 0.5mm, the limiting block 25.4 can limit the stroke of the clamping assembly, the phenomenon that the clamping assembly 25 clamps the flat pipe is avoided, specifically, the limiting block 25.4 is U-shaped, the limiting block 25.4 is designed into a U-shaped structure which has multiple benefits, namely, a limiting function and a locking function, and the structural workpiece is easy to buy and process, secondly, the structural workpiece is not easy to wear, has long service life and is easy to replace after being damaged, the limiting block 25.4 comprises a first sliding part, a middle connecting part and a second sliding part, wherein the middle connecting part is used for connecting one end of the first sliding part and the second sliding part, and the position of the clamping assembly 25 is limited, the first sliding part and the second sliding part are both provided with strip-shaped sliding groove holes, and limit screws can penetrate through the sliding groove holes to be in threaded connection with the guide rail pressing strips 25.3, so that the mounting position of the limit block 25.4 is adjusted, and the pipe diameter of the minimum size which can be clamped by the clamping assembly 25 is finally adjusted.
Referring to fig. 3 and 10-13, the intelligent pneumatic chuck further includes an air path rotating mechanism 50, the air path rotating mechanism 50 is disposed on the mounting housing 10, and the air path rotating mechanism 50 is connected to the air cylinder 26, the air path rotating mechanism 50 drives the air cylinder 26 to operate, and the air path rotating mechanism 50 synchronously drives the first air cylinder and the second air cylinder to operate, so that the first clamping assembly and the second clamping assembly synchronously operate, specifically, the air path rotating mechanism includes a fixed disk 51 and a rotating disk 52, the fixed disk 51 is fixedly connected to the mounting housing 10, the rotating disk 52 is fixedly connected to the rotating base 21, the rotating base 21 can drive the rotating disk 52 to rotate when rotating, so that the rotating disk 52 and the fixed disk 51 can rotate relatively, at least two accommodating cavities are disposed on an end surface of the fixed disk 51 facing one side of the rotating disk 52, and a sealing ring 55 is disposed in each accommodating cavity, in the present embodiment, the number of the accommodating cavities is two, and therefore, the number of the sealing rings 55 is two, at least two accommodating cavities are arranged in concentric circles, the cross section of the sealing ring 55 is rectangular in the present embodiment, and the whole sealing ring 55 is in a sheet shape. The accommodating cavity comprises a bottom wall 51.2, a side wall 51.3 and a top wall 51.4, the bottom wall 51.2, the side wall 51.3 and the top wall 51.4 enclose the accommodating cavity, an opening is arranged on the top, at least two annular protrusions are arranged on the rotating disk 52, the number of the annular protrusions is equal to that of the accommodating cavity, so that in the embodiment, the number of the annular protrusions is two, and the two annular protrusions are arranged in concentric circles. The annular bulges correspond to the accommodating cavities one by one, the annular bulges are accommodated in the openings, a rotating disc groove 52.1 is arranged on the end surface of each annular bulge, a fixed disc groove 51.1 is arranged on the bottom wall 51.2 of each accommodating cavity, the shapes of the fixed disc groove 51.1 and the rotating disc groove 52.1 can be any, the fixed disc groove 51.1 is opposite to the rotating disc groove 52.1, a sealing ring 55 is accommodated in the accommodating cavity, the sealing ring 55 is arranged between the fixed disc groove 51.1 and the rotating disc groove 52.1, the structure of the sealing ring 55 is shown in figure 13, a plurality of air holes 55.1 are arranged on the sealing ring 55 along the circumferential direction, when air is introduced into the fixed disc groove 51.1, the air flow of the air holes 55.1 is smaller than the air inlet flow, the air flow presses the sealing ring 55 towards one side of the rotating disc 52, so that the whole sealing ring 55 is in a cambered surface to seal the rotating disc groove 52.1, the air flow flows into the rotating disc groove 52.1 from the air hole 55.1 and finally flows into the first air cylinder and the second air cylinder at the same flow rate to drive the first air cylinder and the second air cylinder to act, then the ventilation to the fixed disc 51 is stopped, and the acting state is maintained through the pressure maintaining of the first air cylinder and the second air cylinder, so that the sealing ring 55 is restored to be in a sheet shape after the ventilation is stopped, the sealing ring 55 is not abraded, and the service life of the sealing ring 55 is prolonged.
More specifically, each of the air cylinders 26 includes a first air port and a second air port, the second air port is an air outlet when the first air port is an air outlet, and the second air port is an air inlet when the first air port is an air outlet, so that the air cylinder 26 can be made to extend and retract, as shown in fig. 10, at least two fixed disk air ports 53 are provided on the fixed disk 51, the number of the fixed disk air ports 53 is equal to the number of the accommodation chambers, so, in the present embodiment, the number of the fixed disk air ports 53 is two, at least two rotating disk air ports 54 are provided on the rotating disk 52, the number of the rotating disk air ports 54 is equal to the number of the fixed disk air ports 53, in the present embodiment, the number of the rotating disk air ports 54 is two, and for convenience of description, the two fixed disk air ports 53 are divided into a-way fixed disk air ports and B-way fixed disk air ports, the two rotating disk air ports 54 are divided into a-way rotating disk a-way air ports and B-way rotating disk air ports, the number of the cylinders 26 can be multiple, in this embodiment, the number of the cylinders 26 is two, the fixed disk path a air port is communicated with one fixed disk groove 51.1, and the fixed disk path B air port is communicated with the other fixed disk groove 51.1; the air ports of the path A of the rotating disc are simultaneously communicated with the first air ports of the two air cylinders 26 through pipelines, and the air ports of the path B of the rotating disc are simultaneously communicated with the second air ports of the two air cylinders 26 through pipelines; therefore, when the air is introduced into the air port of the fixed disk A, the air enters the two air cylinders 26 from the air port of the rotary disk A through the fixed disk groove 51.1, the sealing ring 55 and the rotary disk groove 52.1 at the same time, the two air cylinders 26 push the clamping components 25 to move at the same time, so that the purpose of synchronous movement of the four clamping components 25 is achieved, and the air finally flows out from the second air port of the air cylinders 26, flows into the air port of the rotary disk B, passes through the rotary disk groove 52.1, the sealing ring 55 and the fixed disk groove 51.1, and is discharged from the air port of the fixed disk B; when the B path of air port of the fixed disc is ventilated, the movement process is similar to the above; therefore, when the air path rotating structure needs to be maintained, the maintenance can be carried out only by disassembling the fixed disc 51 and the rotating disc 52, and the maintenance is simple.
Preferably, the height of the housing cavity is greater than the thickness of the sealing ring 55; therefore, when the cylinder 26 does not need to be operated, the rotary seat 21 drives the rotary disc 52 to rotate, so that the seal ring 55 is not abraded due to friction of the seal ring 55, the opening width is smaller than the width of the seal ring 55, and therefore, when the cylinder 26 does not operate, namely: when the air is not ventilated on the fixed disk air port 53, the sealing ring 55 cannot fall off; a dust ring 56 is arranged between the side wall 51.3 of the fixed disc 51 and the side wall 51.3 of the rotating disc 52, and the dust ring 56 can prevent dust from entering the air path rotating structure 3.
Referring to fig. 8, preferably, the tracking-changing synchronous groove 22.1 includes a plurality of linear grooves, two adjacent linear grooves are connected by an arc-shaped groove, so that the driven column 25.1 moves from one linear groove to the adjacent linear groove, the center of the synchronous disc extends along the vertical direction to form a Y axis 00 ', the included angle between the linear groove and the Y axis 00' is between 20 ° and 80 °, and the included angles between the plurality of linear grooves and the Y axis 00 'decrease sequentially from the outer edge to the inner edge of the synchronous disc, specifically, from the outer edge to the inner edge of the synchronous disc, the plurality of linear grooves are a first linear groove, a second linear groove, … … and an nth linear groove, N is greater than or equal to 2, N is a positive integer, and the included angle α between the nth-1 linear groove and the Y axis 00' is formed by the N-1 linear grooven-1The N section of the linear groove forms an included angle alpha with the Y axis 00nThen, at 20 °<αn<αn-1<80 deg., in the present embodiment, the apodized synchronization slot 22.1 comprises four straight slots, at 20 deg.<α4<α3<α2<α1<The pressure angle formed between the multiple linear grooves and the Y axis 00' is smaller when the pressure angle is smaller from the outer edge to the inner edge of the synchronous disc, when the driven column 25.1 approaches to the center of the synchronous disc, the moving distance of the driven column 25.1 along the radial direction is increased under the condition that the synchronous disc rotates by the same angle, the moving speed of the driven column 25.1 along the radial direction is faster, the clamping force of the driven column 25.1 is smaller, namely the clamping assembly 25 moves from the radial far end point to the radial near end point of the rotating seat 21, the moving speed of the clamping assembly 25 is from slow to fast, the clamping force of the clamping assembly 25 is from large to small, the clamping force of the clamping assembly 25 clamping a large-diameter pipe is larger than the clamping force clamping a small-diameter pipe under the same air pressure, and the clamping force distribution of the intelligent pneumatic chuck is better met.
A roller is arranged between the driven column 25.1 and the track-changing synchronous groove 22.1, the roller is sleeved on the driven column 25.1, when the cylinder 26 drives the synchronous disc to rotate, the driven column 25.1 is driven to act through the matching of the track-changing synchronous groove 22.1 and the driven column 25.1, and the roller is arranged between the driven column 25.1 and the track-changing synchronous groove 22.1, so that on one hand, the synchronous disc can drive the driven column 25.1 to move; on the other hand, the wear between the timing disc and the driven column 25.1 is reduced.
Referring to fig. 1-2, the driving device 30 includes a motor 31 and a reducer 32, wherein the motor 31 is a servo motor 31, the reducer 32 is disposed on the mounting base 11, the motor 31 is connected to the reducer 32, an output shaft of the motor 31 is connected to an input end of the reducer 32, an output end of the reducer 32 is provided with a pinion 33, and the reducer 32 is disposed, so as to, on one hand, increase a torque of the motor 31 for starting the rotation of the rotating body assembly 20; on the other hand, the stability of the motor 31 for starting the rotation of the rotating body assembly 20 can be improved; a large gear 35 is disposed at one end of the rotating body assembly 20 close to the motor 31, specifically, a rolling bearing 60 is disposed between the large gear 35 and the rotating base 21, the large gear 35 is sleeved at one end of an outer ring of the rolling bearing 60, the rotating base 21 is sleeved at the other end of the outer ring of the rolling bearing 60, and screws sequentially penetrate through the large gear 35, the outer ring of the rolling bearing 60 and the rotating base 21 to be in threaded connection, the mounting base 11 is sleeved on an inner ring of the rolling bearing 60, and screws penetrate through the mounting base 11 to be in threaded connection with the inner ring of the rolling bearing 60, an adjusting gear 34 is disposed between the large gear 35 and the small gear 33, the adjusting gear 34 is respectively engaged with the large gear 35 and the small gear 33, generally, a fixed chuck and a movable chuck are disposed on a bed of the laser cutting machine, the adjusting gear 34 is disposed to adjust a center distance between the small gear 33 and the large gear 35, so as to adjust a mounting position of the motor 31, finally, the front end face of the movable chuck can be attached to the rear end face of the fixed chuck to convey pipes, the loss of pipe tailings is reduced, and the production cost is further reduced.
The pipe detection process of the embodiment of the invention is as follows:
in the initial state, the clamping assembly 25 is located at a radial far-end point, when gas is introduced into the fixed disk 51A, the gas passes through the fixed disk groove 51.1, the sealing ring 55 and the rotating disk groove 52.1 and then enters the two cylinders 26 from the rotating disk 52A gas port at the same time, the piston rods of the first cylinder and the second cylinder extend out to respectively drive the inner synchronous disk 22 and the outer synchronous disk 23 to rotate synchronously, and the extension distance of the piston rod of the cylinder 26 is in direct proportion to the rotation angle of the synchronous disks, for example, when the piston rod of the cylinder 26 extends out by 10mm as seen from the direction of fig. 7, the synchronous disk rotates 5 degrees counterclockwise, otherwise, when gas is introduced into the fixed disk 51B gas port, the piston rod of the cylinder 26 contracts by 10mm, the synchronous disk rotates 5 degrees clockwise, and according to the matching relationship between the driven column 25.1 and the track-changing synchronous groove 22.1, the position of the driven column 25.1 in the track-changing synchronous groove 22.1 can be known, for example, in the initial state, the clamping assembly 25 is located at the radial far-end point, that is, the driven column 25.1 is located farthest from the center in the variable track synchronous groove 22.1, when the piston rod of the air cylinder 26 extends out to drive the synchronous disc to rotate counterclockwise by 12 °, the driven column 25.1 is located in the first linear groove to move, when the synchronous disc continues to rotate counterclockwise by 10 °, the driven column 25.1 is located in the second linear groove to move, when the synchronous disc continues to rotate counterclockwise by 7 °, the driven column 25.1 is located in the third linear groove to move, and when the synchronous disc continues to rotate counterclockwise by 3 °, the driven column 25.1 is located in the fourth linear groove to move; the telescopic distance of the piston rod of the air cylinder 26 is detected according to the displacement sensor 43 to obtain the rotation angle of the synchronous disc, so that the moving distance of the driven column 25.1 in each section of linear groove is obtained, the radial moving distance of the driven column 25.1 in the linear groove opening 24.1 is obtained according to the trigonometric function relation, and finally the size of the pipe clamped by the clamping assembly 25 is obtained; if the size of the pipe obtained by analysis is equal to that of the pipe to be processed, the pipe is clamped in a normal state; if the size of the pipe obtained by analysis is far larger or smaller than that of the pipe to be processed, the pipe is mistakenly fed; if the analysis shows that the size of the pipe is slightly smaller than that of the pipe to be processed, the clamping assembly 25 is used for clamping the flat pipe.
This embodiment still discloses a laser cutting machine, and laser cutting machine includes above-mentioned intelligent air chuck, and laser cutting machine is because of including intelligent air chuck and possess all beneficial effect of intelligent air chuck, and here is no longer repeated.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (6)

1. An intelligent air chuck comprises a mounting shell (10), a rotating body assembly (20) and a driving device (30); the rotating body assembly (20) is arranged in the installation shell (10), the driving device (30) is arranged at the rear end of the installation shell (10), the driving device (30) is connected with the rotating body assembly (20), the rotating body assembly (20) comprises a rotating seat (21), an air cylinder (26) and a plurality of clamping assemblies (25), the clamping assemblies (25) are arranged at the front end of the rotating seat (21), the clamping assemblies (25) are uniformly distributed at equal angles along the circumferential direction of the rotating seat (21), the air cylinder (26) is arranged in the rotating seat (21), and a piston rod of the air cylinder (26) is connected with the clamping assemblies (25); the device is characterized in that a detection mechanism (40) is further arranged in the rotating seat (21), and the detection mechanism (40) is connected with a piston rod of the air cylinder (26);
the detection mechanism (40) comprises a displacement sensor (43) and a computer board (41), the displacement sensor (43) is fixedly connected with the air cylinder (26) through a displacement sensor seat, a probe of the displacement sensor (43) is in the same direction as a piston rod of the air cylinder (26) and is parallel to the piston rod of the air cylinder (26), the piston rod of the air cylinder (26) is fixedly connected with the probe through a traction plate, the computer board (41) is fixedly arranged in the rotary seat (21), and the displacement sensor (43) is electrically connected with the computer board (41);
the detection mechanism (40) further comprises a plurality of battery packs (42), the battery packs (42) are arranged in the rotating seat (21), and the battery packs (42) are electrically connected with the computer board (41);
the front end of the rotating seat (21) is provided with four clamping assemblies (25), namely the front end of the rotating seat (21) is provided with a first clamping assembly pair and a second clamping assembly pair, the air cylinder (26) comprises a first air cylinder and a second air cylinder, a piston rod of the first air cylinder is connected with the first clamping assembly pair, a piston rod of the second air cylinder is connected with the second clamping assembly pair, the displacement sensor (43) comprises a first displacement sensor and a second displacement sensor, a piston rod of the first air cylinder is connected with the first displacement sensor, and a piston rod of the second air cylinder is connected with the second displacement sensor;
the rotary body component (20) further comprises a front cover plate (24), an inner synchronous disc (22) and an outer synchronous disc (23), the front end of the rotary seat (21) is sequentially provided with the inner synchronous disc (22), the outer synchronous disc (23) and the front cover plate (24), the air cylinder (26) is hinged to the rotary seat (21), a piston rod of the first air cylinder is hinged to the inner synchronous disc (22), a piston rod of the second air cylinder is hinged to the outer synchronous disc (23), the clamping component (25) is arranged on the end face of the front cover plate (24), the front cover plate (24) is provided with a straight notch (24.1), the straight notch (24.1) is correspondingly arranged with the clamping component (25), the inner synchronous disc (22) and the outer synchronous disc (23) are both provided with two centrosymmetric track-changing synchronous grooves (22.1), the clamping component (25) comprises a driven column (25.1), the driven column (25.1) sequentially passes through the corresponding straight notch (24.1) and the track-changing synchronous groove (22.1).
2. The intelligent pneumatic chuck according to claim 1, wherein the clamping assembly (25) further comprises a sliding block (25.2) and a roller set (25.5), the sliding block (25.2) is connected with a driven column (25.1), the sliding block (25.2) is provided with a plurality of sets of mounting holes arranged along the radial direction of the front cover plate (24) at intervals, and the roller set (25.5) is matched with the plurality of sets of mounting holes to realize adjustable connection between the roller set (25.5) and the sliding block (25.2).
3. The intelligent pneumatic chuck as claimed in claim 1, further comprising an air path rotating mechanism (50), wherein the air path rotating mechanism (50) is disposed on the mounting housing (10), and the air path rotating mechanism (50) is connected to the air cylinder (26), and the air path rotating mechanism (50) drives the air cylinder (26) to operate.
4. The intelligent air chuck according to claim 1, wherein the variable track synchronization groove (22.1) comprises a plurality of linear grooves, two adjacent linear grooves are connected through an arc-shaped groove, centers of the inner synchronization disc (22) and the outer synchronization disc (23) extend in a vertical direction to form a Y axis (00 '), an included angle between the linear grooves and the Y axis (00 ') is between 20 ° and 80 °, and included angles between the plurality of linear grooves and the Y axis (00 ') decrease in sequence from an outer edge to an inner edge of the inner synchronization disc (22) and the outer synchronization disc (23).
5. The intelligent pneumatic chuck as claimed in claim 4, wherein the driving device (30) comprises a motor (31), the motor (31) is disposed on the mounting housing (10), an output shaft of the motor (31) is connected with a pinion (33), one end of the rotating body assembly (20) close to the motor (31) is provided with a gearwheel (35), an adjusting gear (34) is disposed between the gearwheel (35) and the pinion (33), and the adjusting gear (34) is respectively engaged with the gearwheel (35) and the pinion (33).
6. A laser cutting machine comprising the intelligent air chuck of any one of claims 1-5.
CN202010425072.6A 2020-05-19 2020-05-19 Intelligent pneumatic chuck and laser cutting machine Active CN111618456B (en)

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CN112620776B (en) * 2020-12-23 2022-05-13 浙江嘉泰激光科技股份有限公司 Pipe cutting machine
CN112894167B (en) * 2021-01-25 2022-10-11 广东宏石激光技术股份有限公司 Electric clamping chuck
CN113458628B (en) * 2021-09-02 2021-11-09 南通华恩医疗设备制造有限公司 Laser cutting machine is used in medical instrument production
CN113681178B (en) * 2021-09-27 2023-08-18 广东宏石激光技术股份有限公司 Braking formula of braking is link up chuck and laser cutting machine
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CN113953697B (en) * 2021-12-21 2022-03-15 倍得福机械科技(常州)股份有限公司 Front chuck structure for laser cutting machine
CN114833476A (en) * 2022-05-13 2022-08-02 苏州迅镭激光科技有限公司 Chuck device and workpiece machining method
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