CN110961802B - Laser drilling equipment and method for spherical workpiece - Google Patents
Laser drilling equipment and method for spherical workpiece Download PDFInfo
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- CN110961802B CN110961802B CN201911250135.2A CN201911250135A CN110961802B CN 110961802 B CN110961802 B CN 110961802B CN 201911250135 A CN201911250135 A CN 201911250135A CN 110961802 B CN110961802 B CN 110961802B
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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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
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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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
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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
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- Laser Beam Processing (AREA)
Abstract
The invention discloses laser drilling equipment for spherical workpieces, which comprises a horizontal central workpiece platform, wherein the upper surface of the central workpiece platform is a horizontal plane, and the spherical workpieces are horizontally supported on the central workpiece platform; a laser punching mechanism capable of ascending and descending up and down is arranged above the spherical workpiece, and the axis of a hole punched on the spherical workpiece by the laser punching mechanism passes through the spherical center of the spherical workpiece; the structure adopts the printing ink spot mark, realizes the process requirement of punching by actively searching the circle center of the spot mark through the lens, and avoids the mode of positioning by adopting a precise clamp.
Description
Technical Field
The invention belongs to the field of laser drilling.
Background
The punching on the spherical workpiece has higher positioning requirement, the axis needing to be punched in the process requirement needs to pass through the spherical center of the spherical workpiece, and because the workpiece is spherical and the sizes of the spherical workpieces are different, the accurate positioning by adopting the traditional positioning fixture is more difficult in real time.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides laser drilling equipment for a spherical workpiece and a working method thereof, wherein the axis of a drilled hole passes through the spherical center of the spherical workpiece.
The technical scheme is as follows: in order to achieve the purpose, the laser drilling equipment for the spherical workpiece comprises a horizontal central workpiece platform, wherein the upper surface of the central workpiece platform is a horizontal plane, and the spherical workpiece is horizontally supported on the central workpiece platform; a laser punching mechanism capable of ascending and descending up and down is arranged above the spherical workpiece, and the axis of a hole punched on the spherical workpiece by the laser punching mechanism passes through the spherical center of the spherical workpiece;
four linear push rod motor platforms are circumferentially distributed around the central workpiece platform in an array manner, four linear push rod motors are respectively installed on the four linear push rod motor platforms, and linear push rods of the four linear push rod motors extend towards the spherical center direction of the spherical workpiece;
and the tail end of each linear push rod is vertically and fixedly provided with clamping pieces, and the four clamping pieces are distributed and clamped around the spherical workpiece in a circumferential array manner.
Furthermore, lifting devices are arranged on two sides of the central workpiece platform, lifting platforms are mounted on the lifting devices, and the lifting devices can drive the lifting platforms to lift up and down;
the lifting platform is of a horizontal frame structure; the laser punching mechanism is installed on the inner side of the frame structure of the lifting platform, and the laser punching mechanism can translate left, right, front and back on the inner side of the frame structure of the lifting platform.
Furthermore, the laser punching mechanism comprises two translation cross bars which are distributed front and back and extend along the left-right direction, the two translation cross bars are arranged on the guide rail on the inner side of the lifting platform in a sliding manner, and the driving device can drive the two translation cross bars to slide left and right along the guide rail on the inner side of the lifting platform; two ends of the two translation transverse bars are respectively fixedly connected with two translation guide rods extending along the front-back direction; the two translation guide rods are respectively sleeved with a left sliding sleeve and a right sliding sleeve in a sliding manner, and the driving device can drive the left sliding sleeve and the right sliding sleeve to slide back and forth along the extension direction of the translation guide rods;
the right side of the left sliding sleeve is fixedly connected with a left mechanism seat, and the left side of the right sliding sleeve is fixedly connected with a right mechanism seat; a punching machine platform is supported and connected above the left mechanism seat through a plurality of first supporting stand columns, a vertical punching machine lifting guide rail is fixedly mounted on the right side of the punching machine platform, a lifting slide block is arranged on the punching machine lifting guide rail, a vertical lifting linear motor is mounted at the top end of the punching machine lifting guide rail, and a telescopic rod of the lifting linear motor can drive the lifting slide block to move up and down along the punching machine lifting guide rail; one side of the lifting slide block is fixedly connected with a laser drilling machine through a supporting piece, and a laser emitting head of the laser drilling machine is arranged vertically downwards.
The mechanism further comprises two sliding rods which are distributed front and back and extend along the left-right direction, and two ends of the two sliding rods are respectively and fixedly connected with a left mechanism seat and a right mechanism seat;
a horizontal rectangular left sliding plate and a horizontal rectangular right sliding plate are arranged between the two sliding rods, and first sliding grooves on two sides of the left sliding plate are respectively in sliding fit with the two sliding rods; the second sliding chutes on the two sides of the right sliding plate are respectively in sliding fit with the two sliding rods; the left sliding plate and the right sliding plate can slide left and right along the extending direction of the two sliding rods; the middle part of the left end of the right sliding plate is provided with a right semicircular groove in a hollow manner, the bottom end of the right semicircular groove is embedded with a transparent semicircular right observation window, the middle part of the right end of the left sliding plate is provided with a left semicircular groove in a hollow manner, and the bottom end of the left semicircular groove is embedded with a transparent semicircular left observation window;
when the left sliding plate and the right sliding plate move close to each other to contact each other, the right semicircular groove and the left semicircular groove form a whole circular groove, the semicircular right observation window and the semicircular left observation window form a whole circular observation window, a cross-shaped aiming line is arranged on the whole circular observation window, and the center of the aiming line is an alignment center; and the laser emitting head of the laser drilling machine is coaxial with the right semicircular groove and the left semicircular groove to form a whole circular groove upper part.
Further, a motor mounting platform is supported above the right mechanism seat through a second supporting upright post, a steering engine with an output shaft facing downwards is fixedly mounted on the lower side of the motor mounting platform, and a horizontal rotating gear is synchronously connected to the lower end of the output shaft of the steering engine;
the left sliding plate is fixedly connected with a first rack extending rightwards through a third supporting column, the right sliding plate is fixedly connected with a second rack extending leftwards through a fourth supporting column, and the rotating gear is meshed with the first rack and the second rack on the front side and the rear side in a transmission connection mode simultaneously.
Furthermore, an observation camera with a downward lens is fixedly connected to the first rack through a connecting arm, and the observation camera is positioned right above a full circular groove formed by the right semicircular groove and the left semicircular groove; the lower surfaces of the left sliding plate and the right sliding plate are respectively provided with a horizontal left ink sponge pad and a horizontal right ink sponge pad, and colored ink is adsorbed in the horizontal left ink sponge pad and the horizontal right ink sponge pad; circular ink spots can be left after the top end of the spherical workpiece contacts the horizontal left ink sponge pad and the horizontal right ink sponge pad.
Further, the colored ink absorbed in the horizontal left ink sponge cushion and the horizontal right ink sponge cushion is water-based red ink
Further, the laser drilling equipment for the spherical workpiece comprises the following steps:
horizontally placing a spherical workpiece on a central workpiece platform, and then clamping four clamping pieces around the spherical workpiece to prevent the spherical workpiece from rolling on the central workpiece platform;
controlling the rotating gear to rotate in the forward direction, so that the second rack and the first rack move in opposite directions, and then the second rack and the first rack drive the left sliding plate and the right sliding plate to move close to each other respectively until the left sliding plate and the right sliding plate move close to each other to contact each other, at the moment, the right semicircular groove and the left semicircular groove form a whole circular groove, the semicircular right observation window and the semicircular left observation window form a whole circular observation window, a cross-shaped aiming line is formed on the whole circular observation window, and the center of the aiming line has an alignment center; at the moment, the observation camera moves above the circular observation window along with the first rack, and the lens of the observation camera can observe the center of alignment on the circular observation window in real time;
driving the two translation crossbars to slide left and right along the guide rails on the inner side of the lifting platform by a driving device, and simultaneously driving the left sliding sleeve and the right sliding sleeve to slide back and forth along the extension direction of the translation guide rods by another driving device, so that the horizontal positions of the left sliding plate and the right sliding plate are adjusted, and the displacement of the two translation crossbars, the left sliding plate and the right sliding plate is stopped until the left sliding plate or the right sliding plate is positioned right above the spherical workpiece;
driving the lifting platform to slowly descend by the lifting device, and then enabling the left sliding plate and the right sliding plate to descend until the top end of the spherical workpiece just contacts with the left ink sponge pad at the bottom of the left sliding plate or the right ink sponge pad at the bottom of the right sliding plate, and then leaving circular ink spots;
controlling a lifting device to drive a lifting platform to slowly move upwards for a certain distance, and suspending the lifting platform to lift when the top end of the spherical workpiece is just separated from the lower surface of the left ink sponge pad or the right ink sponge pad, wherein the center of a circular ink spot at the top end of the spherical workpiece is the topmost end of the spherical workpiece;
step six, the driving device drives the two translation crossbands to slide left and right along the guide rail on the inner side of the lifting platform, meanwhile, the other driving device drives the left sliding sleeve and the right sliding sleeve to slide back and forth along the extension direction of the translation guide rod, so that the horizontal positions of the left sliding plate and the right sliding plate are adjusted, the full circle observation window is adjusted to a position right above a circular ink spot on the top end of the spherical workpiece, at the moment, the lens can observe the circular ink spot on the top end of the spherical workpiece through the transparent full circle observation window, if the circle center of the circular ink spot is not coincident with the center of alignment on the full circle observation window, the horizontal positions of the left sliding plate and the right sliding plate are continuously finely adjusted until the circle center of the circular ink spot is coincident with the center of alignment on the full circle observation window, and at the moment, the extension line of laser emission of the laser emission head of the laser drilling machine passes through the center of the spherical workpiece;
controlling the rotating gear to rotate reversely, enabling the second rack and the first rack to move in opposite directions, further enabling the second rack and the first rack to respectively drive the left sliding plate and the right sliding plate to move away from each other, enabling the semicircular right observation window and the semicircular left observation window to move away from each other, further enabling the semicircular right observation window and the semicircular left observation window to leave the position right below the laser emitting head, enabling the observation camera to move to the position right below the laser emitting head under the driving of the first rack, and enabling no shielding object to exist between the laser emitting head and the top end of the spherical workpiece;
and step eight, controlling the laser emitting head to descend to a proper position and then downwards emitting punching laser, further punching the top end of the spherical workpiece by using the laser beam emitted by the laser emitting head, wherein the axis of the hole punched in the spherical workpiece passes through the spherical center of the spherical workpiece in the state.
Has the advantages that: the spherical workpiece printing device is simple in structure, and circular printing ink spots are left after the top end of the spherical workpiece just contacts with the left printing ink sponge pad at the bottom of the left sliding plate or the right printing ink sponge pad at the bottom of the right sliding plate; when the top end of the spherical workpiece is separated from the lower surface of the left ink sponge pad or the right ink sponge pad, the center of the circular ink spot at the top end of the spherical workpiece is the topmost end of the spherical workpiece; when the lens observes that the center of the circle of the circular ink spot is superposed with the center of alignment on the full-circle observation window, the extending line of laser emission of the laser emitting head of the laser drilling machine passes through the center of the sphere of the spherical workpiece, and at the moment, the axis of a hole drilled on the spherical workpiece passes through the center of the sphere of the spherical workpiece; the structure adopts the printing ink spot mark, realizes the process requirement of punching by actively searching the circle center of the spot mark through the lens, and avoids the mode of positioning by adopting a precise clamp.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus;
FIG. 2 is a schematic overall perspective view of the apparatus;
FIG. 3 is an enlarged schematic view of FIG. 2 at 034;
FIG. 4 is a schematic structural view of the lifting platform and the laser punching mechanism;
FIG. 5 is a schematic view of the overall structure of the laser punching mechanism;
FIG. 6 is a schematic view of the left and right sliding plates and their transmission structure;
FIG. 7 is a bottom view of FIG. 6;
FIG. 8 is a schematic view of the left slide plate and the right slide plate being driven to separate from each other;
FIG. 9 is a bottom view of FIG. 8;
FIG. 10 is a schematic view of the left sliding plate;
fig. 11 is a schematic view of the structure of the right sliding plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The laser drilling device for spherical workpieces as shown in fig. 1 to 11 comprises a horizontal central workpiece platform 29, wherein the upper surface of the central workpiece platform 29 is a horizontal plane, and a spherical workpiece 28 is horizontally supported on the central workpiece platform 29; a laser punching mechanism capable of ascending and descending up and down is arranged above the spherical workpiece 28, and the axis of a hole punched on the spherical workpiece 28 by the laser punching mechanism passes through the spherical center of the spherical workpiece 28;
four linear push rod motor platforms 32 are circumferentially distributed around the central workpiece platform 29 in an array manner, four linear push rod motors 31 are respectively mounted on the four linear push rod motor platforms 32, and linear push rods 30 of the four linear push rod motors 31 extend towards the spherical center direction of the spherical workpiece 28;
the tail end of each linear push rod 30 is vertically and fixedly provided with a clamping piece 33, and the four clamping pieces 33 are distributed and clamped around the spherical workpiece 28 in a circumferential array manner.
the lifting platform 35 is a horizontal frame structure; the laser punching mechanism is installed on the inner side of the frame structure of the lifting platform 35, and the laser punching mechanism can translate left, right, front and back on the inner side of the frame structure of the lifting platform 35.
The laser punching mechanism comprises two translational cross bars 45 which are distributed front and back and extend along the left-right direction, the two translational cross bars 45 are arranged on the guide rail on the inner side of the lifting platform 35 in a sliding manner, and the driving device can drive the two translational cross bars 45 to slide left and right along the guide rail on the inner side of the lifting platform 35; two ends of the two translation horizontal bars 45 are respectively fixedly connected with two translation guide rods 46 extending along the front-back direction; the two translation guide rods 46 are respectively sleeved with the left sliding sleeve 3 and the right sliding sleeve 14 in a sliding manner, and the driving device can drive the left sliding sleeve 3 and the right sliding sleeve 14 to slide back and forth along the extension direction of the translation guide rods 46; the driving device of the embodiment can be an existing linear push rod motor, a lead screw transmission mechanism, an air cylinder and the like;
the right side of the left sliding sleeve 3 is fixedly connected with a left mechanism seat 4, and the left side of the right sliding sleeve 14 is fixedly connected with a right mechanism seat 12; a punching machine platform 1 is supported and connected above the left mechanism seat 4 through a plurality of first supporting upright posts 2, a vertical punching machine lifting guide rail 25 is fixedly installed on the right side of the punching machine platform 1, a lifting slide block 22 is arranged on the punching machine lifting guide rail 25, a vertical lifting linear motor 23 is installed at the top end of the punching machine lifting guide rail 25, and a telescopic rod 24 of the lifting linear motor 23 can drive the lifting slide block 22 to move up and down along the punching machine lifting guide rail 25; one side of the lifting slide block 22 is fixedly connected with a laser-beam drilling machine 20 through a support part 21, and a laser emitting head 19 of the laser-beam drilling machine 20 is arranged vertically downwards.
The mechanism also comprises two sliding rods 5 which are distributed front and back and extend along the left and right direction, and two ends of the two sliding rods 5 are respectively and fixedly connected with a left mechanism seat 4 and a right mechanism seat 12;
a horizontal rectangular left sliding plate 6 and a horizontal rectangular right sliding plate 10 are arranged between the two sliding rods 5, and the first sliding chutes 43 on the two sides of the left sliding plate 6 are respectively in sliding fit with the two sliding rods 5; the second sliding chutes 47 on the two sides of the right sliding plate 10 are respectively in sliding fit with the two sliding rods 5; the left sliding plate 6 and the right sliding plate 10 can slide left and right along the extending direction of the two sliding rods 5; a right semicircular groove 48 is hollowed in the middle of the left end of the right sliding plate 10, a transparent semicircular right observation window 49 is embedded in the bottom end of the right semicircular groove 48, a left semicircular groove 39 is hollowed in the middle of the right end of the left sliding plate 6, and a transparent semicircular left observation window 40 is embedded in the bottom end of the left semicircular groove 39;
when the left sliding plate 6 and the right sliding plate 10 move close to each other to contact each other, the right semicircular groove 48 and the left semicircular groove 39 form a whole circular groove 007, the semicircular right observation window 49 and the semicircular left observation window 40 form a whole circular observation window 008, a cross-shaped aiming line 53 is arranged on the whole circular observation window 008, and the center of the aiming line 53 is the center 52; and the laser emitting head 19 of the laser drilling machine 20 is coaxially arranged above the right semicircular groove 48 and the left semicircular groove 39 to form a round groove 007.
A motor mounting platform 16 is supported and arranged above the right mechanism seat 12 through a second supporting upright post 15, a steering gear 17 with an output shaft 8 facing downwards is fixedly mounted on the lower side of the motor mounting platform 16, and a horizontal rotating gear 9 is synchronously connected to the lower end of the output shaft 8 of the steering gear 17;
a first rack 11 extending rightwards is fixedly connected to the left sliding plate 6 through a third supporting column 7, a second rack 18 extending leftwards is fixedly connected to the right sliding plate 10 through a fourth supporting column 42, and the rotating gear 9 is meshed with the first rack 11 and the second rack 18 at the front side and the rear side in a transmission connection mode simultaneously.
The first rack 11 is also fixedly connected with an observation camera 26 with a downward lens 38 through a connecting arm, and the observation camera 26 is positioned right above a full circular groove 007 formed by a right semicircular groove 48 and a left semicircular groove 39; the lower surfaces of the left sliding plate 6 and the right sliding plate 10 are respectively provided with a horizontal left ink sponge pad 001 and a horizontal right ink sponge pad 002, and colored ink is adsorbed in the horizontal left ink sponge pad 001 and the horizontal right ink sponge pad 002; the top of the spherical workpiece 28 contacts the left horizontal ink sponge pad 001 and the right horizontal ink sponge pad 002 leaving a circular spot 34 of ink.
The colored ink absorbed in the horizontal left ink sponge pad 001 and the horizontal right ink sponge pad 002 is water-based red ink
The working method of the laser drilling equipment for the spherical workpiece comprises the following steps:
step one, horizontally placing a spherical workpiece 28 on a central workpiece platform 29, and then clamping four clamping pieces 33 around the spherical workpiece 28 to prevent the spherical workpiece 28 from rolling on the central workpiece platform 29;
step two, controlling the rotating gear 9 to rotate in the forward direction, so that the second rack 18 and the first rack 11 move in opposite directions, and then the second rack 18 and the first rack 11 respectively drive the left sliding plate 6 and the right sliding plate 10 to move close to each other until the left sliding plate 6 and the right sliding plate 10 move close to each other to contact each other, at this time, the right semicircular groove 48 and the left semicircular groove 39 form a full circular groove 007, the semicircular right observation window 49 and the semicircular left observation window 40 form a full circular observation window 008, a cross aiming line 53 is formed on the full circular observation window 008, and the center of the aiming line 53 has an alignment center 52; at this time, the observation camera 26 also moves above the circular observation window 008 along with the first rack 11, and at this time, the lens 38 of the observation camera 26 can observe the collimation 52 on the circular observation window 008 in real time;
thirdly, the driving device drives the two translation crossbars 45 to slide left and right along the guide rails on the inner side of the lifting platform 35, and meanwhile, the other driving device drives the left sliding sleeve 3 and the right sliding sleeve 14 to slide back and forth along the extension direction of the translation guide rod 46, so that the horizontal positions of the left sliding plate 6 and the right sliding plate 10 are adjusted, and the displacement of the two translation crossbars 45, the left sliding plate 6 and the right sliding plate 10 is stopped until the left sliding plate 6 or the right sliding plate 10 is positioned right above the spherical workpiece 28;
step four, the lifting device 36 drives the lifting platform 35 to slowly descend, and the left sliding plate 6 and the right sliding plate 10 can descend until the top end of the spherical workpiece 28 just contacts the left ink sponge pad 001 at the bottom of the left sliding plate 6 or the right ink sponge pad 002 at the bottom of the right sliding plate 10, and then the circular ink spots 34 are left;
controlling the lifting device 36 to drive the lifting platform 35 to slowly move upwards for a certain distance, and suspending the lifting platform 35 to lift when the top end of the spherical workpiece 28 is just separated from the lower surface of the left ink spongy cushion 001 or the right ink spongy cushion 002, wherein the center of the circular ink spot 34 at the top end of the spherical workpiece 28 is the topmost end of the spherical workpiece 28;
step six, the driving device drives the two translational crossbars 45 to slide left and right along the guide rails on the inner side of the lifting platform 35, meanwhile, the other driving device drives the left sliding sleeve 3 and the right sliding sleeve 14 to slide back and forth along the extending direction of the translation guide rod 46, thereby realizing the adjustment of the horizontal positions of the left sliding plate 6 and the right sliding plate 10, and the full circle observation window 008 is adjusted to the position right above the circular ink spot 34 at the top end of the spherical workpiece 28, at this time, the lens 38 can observe the circular ink spot 34 at the top end of the spherical workpiece 28 through the transparent full circle observation window 008, if the center of the circular ink spot 34 does not coincide with the center 52 on the full circle observation window 008, then the horizontal positions of the left sliding plate 6 and the right sliding plate 10 are continuously fine-tuned until the lens 38 observes that the center of the circle of the circular ink spot 34 coincides with the center of the center 52 of the full circle observation window 008, which means that the extension line of the laser emission head 19 of the laser-beam drilling machine 20 passes through the center of the sphere of the spherical workpiece 28;
step seven, controlling the rotating gear 9 to rotate reversely, so that the second rack 18 and the first rack 11 move in opposite directions, further the second rack 18 and the first rack 11 respectively drive the left sliding plate 6 and the right sliding plate 10 to move away from each other, the semicircular right observation window 49 and the semicircular left observation window 40 move away from each other, further the semicircular right observation window 49 and the semicircular left observation window 40 leave the position right below the laser emitting head 19, at the moment, the observation camera 26 also moves to the position right below the laser emitting head 19 under the driving of the first rack 11, and at the moment, no shielding object exists between the laser emitting head 19 and the top end of the spherical workpiece 28;
and step eight, controlling the laser emitting head 19 to descend to a proper position and then emitting the punching laser downwards, further punching the top end of the spherical workpiece 28 by the laser beam emitted by the laser emitting head 19, wherein the axis of the punched hole on the spherical workpiece 28 passes through the spherical center of the spherical workpiece 28 in the state.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
1. Laser drilling equipment of spheroid work piece, its characterized in that: the spherical workpiece platform comprises a horizontal central workpiece platform (29), wherein the upper surface of the central workpiece platform (29) is a horizontal plane, and a spherical workpiece (28) is horizontally supported on the central workpiece platform (29); a laser punching mechanism capable of ascending and descending is arranged above the spherical workpiece (28), and the axis of a hole punched on the spherical workpiece (28) by the laser punching mechanism passes through the spherical center of the spherical workpiece (28);
four linear push rod motor platforms (32) are circumferentially distributed on the periphery of the central workpiece platform (29) in an array manner, four linear push rod motors (31) are respectively mounted on the four linear push rod motor platforms (32), and linear push rods (30) of the four linear push rod motors (31) extend towards the spherical center direction of the spherical workpiece (28);
the tail end of each linear push rod (30) is vertically and fixedly provided with a clamping piece (33), and the four clamping pieces (33) are distributed and clamped around the spherical workpiece (28) in a circumferential array manner;
lifting devices (36) are arranged on two sides of the central workpiece platform (29), a lifting platform (35) is mounted on each lifting device (36), and each lifting device (36) can drive each lifting platform (35) to lift up and down;
the lifting platform (35) is a horizontal frame structure; the laser punching mechanism is arranged on the inner side of the frame structure of the lifting platform (35), and the laser punching mechanism can translate left, right, front and back on the inner side of the frame structure of the lifting platform (35);
the laser punching mechanism comprises two translation transverse bars (45) which are distributed in a front-back manner and extend in the left-right direction, the two translation transverse bars (45) are arranged on a guide rail on the inner side of the lifting platform (35) in a sliding manner, and a driving device can drive the two translation transverse bars (45) to slide left and right along the guide rail on the inner side of the lifting platform (35); two ends of the two translation transverse bars (45) are respectively and fixedly connected with two translation guide rods (46) extending along the front-back direction; the two translation guide rods (46) are respectively sleeved with a left sliding sleeve (3) and a right sliding sleeve (14) in a sliding manner, and the driving device can drive the left sliding sleeve (3) and the right sliding sleeve (14) to slide back and forth along the extension direction of the translation guide rods (46);
the right side of the left sliding sleeve (3) is fixedly connected with a left mechanism seat (4), and the left side of the right sliding sleeve (14) is fixedly connected with a right mechanism seat (12); a punching machine platform (1) is supported and connected above the left mechanism seat (4) through a plurality of first supporting upright posts (2), a vertical punching machine lifting guide rail (25) is fixedly installed on the right side of the punching machine platform (1), a lifting slide block (22) is arranged on the punching machine lifting guide rail (25), a vertical lifting linear motor (23) is installed at the top end of the punching machine lifting guide rail (25), and a telescopic rod (24) of the lifting linear motor (23) can drive the lifting slide block (22) to move up and down along the punching machine lifting guide rail (25); one side of the lifting slide block (22) is fixedly connected with a laser drilling machine (20) through a support piece (21), and a laser emitting head (19) of the laser drilling machine (20) is arranged vertically downwards;
the mechanism also comprises two sliding rods (5) which are distributed front and back and extend along the left and right directions, and two ends of each sliding rod (5) are respectively and fixedly connected with a left mechanism seat (4) and a right mechanism seat (12);
a left sliding plate (6) and a right sliding plate (10) which are horizontally rectangular are arranged between the two sliding rods (5), and first sliding grooves (43) on two sides of the left sliding plate (6) are respectively in sliding fit with the two sliding rods (5); the second sliding chutes (47) on the two sides of the right sliding plate (10) are respectively in sliding fit with the two sliding rods (5); the left sliding plate (6) and the right sliding plate (10) can slide left and right along the extending direction of the two sliding rods (5); the middle part of the left end of the right sliding plate (10) is provided with a right semicircular groove (48) in a hollow manner, the bottom end of the right semicircular groove (48) is embedded with a transparent semicircular right observation window (49), the middle part of the right end of the left sliding plate (6) is provided with a left semicircular groove (39) in a hollow manner, and the bottom end of the left semicircular groove (39) is embedded with a transparent semicircular left observation window (40);
when the left sliding plate (6) and the right sliding plate (10) move close to each other to contact each other, the right semicircular groove (48) and the left semicircular groove (39) form a whole circular groove (007), the semicircular right observation window (49) and the semicircular left observation window (40) form a whole circular observation window (008), a cross aiming line (53) is arranged on the whole circular observation window (008), and the center of the aiming line (53) is an alignment center (52); and a laser emitting head (19) of the laser drilling machine (20) is coaxial with the right semicircular groove (48) and the left semicircular groove (39) to form the upper part of the round groove (007).
2. Laser drilling device for spherical workpieces according to claim 1, characterized in that: a motor mounting platform (16) is supported and arranged above the right mechanism seat (12) through a second supporting upright post (15), a steering engine (17) with an output shaft (8) facing downwards is fixedly mounted on the lower side of the motor mounting platform (16), and a horizontal rotating gear (9) is synchronously connected to the lower end of the output shaft (8) of the steering engine (17);
the left sliding plate (6) is fixedly connected with a first rack (11) extending rightwards through a third supporting column (7), the right sliding plate (10) is fixedly connected with a second rack (18) extending leftwards through a fourth supporting column (42), and the rotating gear (9) is meshed with the first rack (11) and the second rack (18) on the front side and the rear side in a transmission connection mode simultaneously.
3. Laser drilling device for spherical workpieces according to claim 2, characterized in that: an observation camera (26) with a downward lens (38) is fixedly connected to the first rack (11) through a connecting arm, and the observation camera (26) is positioned right above a round groove (007) formed by the right semi-circular groove (48) and the left semi-circular groove (39); the lower surfaces of the left sliding plate (6) and the right sliding plate (10) are respectively provided with a horizontal left ink sponge pad (001) and a horizontal right ink sponge pad (002), and colored ink is adsorbed in the horizontal left ink sponge pad (001) and the horizontal right ink sponge pad (002); circular ink spots (34) are left after the top end of the spherical workpiece (28) contacts the left horizontal ink sponge pad (001) and the right horizontal ink sponge pad (002).
4. A laser drilling apparatus for spherical workpieces according to claim 3, characterized in that: the colored ink absorbed in the horizontal left ink sponge pad (001) and the horizontal right ink sponge pad (002) is water-based red ink.
5. The method of operating a laser drilling apparatus for spherical workpieces according to claim 4, wherein: the method comprises the following steps:
the method comprises the following steps that firstly, a spherical workpiece (28) is horizontally placed on a central workpiece platform (29), and then four clamping pieces (33) are clamped around the spherical workpiece (28) to prevent the spherical workpiece (28) from rolling on the central workpiece platform (29);
step two, controlling the rotating gear (9) to rotate in the positive direction, enabling the second rack (18) and the first rack (11) to move in opposite directions, and further enabling the second rack (18) and the first rack (11) to respectively drive the left sliding plate (6) and the right sliding plate (10) to move close to each other until the left sliding plate (6) and the right sliding plate (10) move close to each other to contact each other, at the moment, the right semicircular groove (48) and the left semicircular groove (39) form a circular groove (007), the semicircular right observation window (49) and the semicircular left observation window (40) form a circular observation window (008), a cross aiming line (53) is formed on the circular observation window (008), and the center of the aiming line (53) is provided with an alignment center (52); and at the moment, the observation camera (26) also moves above the circular observation window (008) along with the first rack (11), and the lens (38) of the observation camera (26) can observe the collimation center (52) on the circular observation window (008) in real time;
thirdly, the driving device drives the two translation crossbars (45) to slide left and right along the guide rail on the inner side of the lifting platform (35), meanwhile, the other driving device drives the left sliding sleeve (3) and the right sliding sleeve (14) to slide back and forth along the extension direction of the translation guide rod (46), so that the horizontal positions of the left sliding plate (6) and the right sliding plate (10) are adjusted, and the displacement of the two translation crossbars (45), the left sliding plate (6) and the right sliding plate (10) is stopped until the left sliding plate (6) or the right sliding plate (10) is positioned right above the spherical workpiece (28);
fourthly, the lifting device (36) drives the lifting platform (35) to slowly descend, and the left sliding plate (6) and the right sliding plate (10) can descend until the top end of the spherical workpiece (28) just contacts with the left ink sponge pad (001) at the bottom of the left sliding plate (6) or the right ink sponge pad (002) at the bottom of the right sliding plate (10) and then circular ink spots (34) are left;
controlling a lifting device (36) to drive a lifting platform (35) to slowly move upwards for a certain distance, and suspending the lifting platform (35) to lift when the top end of the spherical workpiece (28) is just separated from the lower surface of a left ink sponge pad (001) or a right ink sponge pad (002), wherein the center of a circular ink spot (34) at the top end of the spherical workpiece (28) is the topmost end of the spherical workpiece (28);
sixthly, the driving device drives the two translation transverse bars (45) to slide left and right along the guide rail on the inner side of the lifting platform (35), meanwhile, the other driving device drives the left sliding sleeve (3) and the right sliding sleeve (14) to slide back and forth along the extension direction of the translation guide rod (46), so that the horizontal positions of the left sliding plate (6) and the right sliding plate (10) are adjusted, the whole circle observation window (008) is adjusted to be right above the circular ink spot (34) at the top end of the spherical workpiece (28), at the moment, the lens (38) can observe the circular ink spot (34) at the top end of the spherical workpiece (28) through the transparent whole circle observation window (008), if the circle center of the circular ink spot (34) is not overlapped with the center (52) on the whole circle observation window (008), the horizontal positions of the left sliding plate (6) and the right sliding plate (10) are continuously finely adjusted until the circle center of the circular ink spot (34) is observed by the lens (38) to be overlapped with the center (52) on the whole circle observation window (008), at this time, the extension line of the laser emission of the laser emitting head (19) of the laser-beam drilling machine (20) is explained to pass through the spherical center of the spherical workpiece (28);
seventhly, controlling the rotating gear (9) to rotate reversely to enable the second rack (18) and the first rack (11) to move in opposite directions, further enabling the second rack (18) and the first rack (11) to respectively drive the left sliding plate (6) and the right sliding plate (10) to move away from each other, enabling the semicircular right observation window (49) and the semicircular left observation window (40) to move away from each other, further enabling the semicircular right observation window (49) and the semicircular left observation window (40) to leave the position under the laser emitting head (19), enabling the observation camera (26) to move to the position under the laser emitting head (19) under the driving of the first rack (11), and enabling no shielding object to exist between the laser emitting head (19) and the top end of the spherical workpiece (28);
and step eight, controlling the laser emitting head (19) to descend to a proper position and then emitting drilling laser downwards, further drilling the top end of the spherical workpiece (28) by using the laser beam emitted by the laser emitting head (19), and enabling the axis of the hole drilled on the spherical workpiece (28) to pass through the spherical center of the spherical workpiece (28) in the state.
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CN111844232B (en) * | 2020-07-17 | 2022-05-06 | 浙江麟祥塑业有限公司 | Mechanism of punching in spherical plastic lid middle part |
CN114147351B (en) * | 2022-01-24 | 2023-05-16 | 河间市中昊机械设备有限公司 | Automatic positioning laser drilling machine with weld joint recognition function |
CN114932319B (en) * | 2022-06-02 | 2023-07-07 | 湖北工业大学 | Measurement and control instrument for laser processing |
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Effective date of registration: 20211111 Address after: 518000 floor 4, building B, Changcheng Road, Shuitian community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Jialuo Laser Technology Co., Ltd Address before: 213000 unit 11, east of HUTANG industrial concentration zone, 66 Kechuang Road, Wujin District, Changzhou City, Jiangsu Province Applicant before: Hang Tao |
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