阅读说明：本技术 一种非规则曲面工件激光标刻装置 (Laser marking device for irregular curved surface workpiece ) 是由 林凌鹏 魏鑫磊 于 2020-05-14 设计创作，主要内容包括：本发明提供了一种非规则曲面工件激光标刻装置,包括工作台、双轴旋转组件、升降丝杠导轨组件、激光头组件,双轴旋转组件设置在工作台中间,激光头组件固定在升降丝杠导轨组件一侧,并位于双轴旋转组件上方；所述双轴旋转组件包括双耳支架、第一旋转组件、第二旋转组件、非规则曲面工件,第一旋转组件通过对称设置的轴承座固定在双耳支架上,第二旋转组件通过对称设置的转轴与连接板安装在第一旋转组件上,非规则曲面工件可通过三组球形手指进行内撑夹持。非规则曲面工件在升降丝杠导轨组件与双轴旋转组件协同作用下,实现了在线高精度自动化激光标刻,大大提高了生产效率。(The invention provides a laser marking device for irregular curved surface workpieces, which comprises a workbench, a double-shaft rotating assembly, a lifting lead screw guide rail assembly and a laser head assembly, wherein the double-shaft rotating assembly is arranged in the middle of the workbench; the double-shaft rotating assembly comprises a double-lug support, a first rotating assembly, a second rotating assembly and an irregular curved surface workpiece, the first rotating assembly is fixed on the double-lug support through a bearing seat which is symmetrically arranged, the second rotating assembly is installed on the first rotating assembly through a rotating shaft and a connecting plate which are symmetrically arranged, and the irregular curved surface workpiece can be clamped through inner support of three groups of spherical fingers. The irregular curved surface workpiece realizes on-line high-precision automatic laser marking under the synergistic effect of the lifting screw guide rail assembly and the double-shaft rotating assembly, and the production efficiency is greatly improved.)

1. A laser marking device for irregular curved surface workpieces is characterized by comprising a workbench (1), a double-shaft rotating assembly (2), a lifting screw guide rail assembly (3) and a laser head assembly (4); the double-shaft rotating assembly (2) is arranged in the middle of the workbench (1), and the laser head assembly (4) is fixed on one side of the lifting lead screw guide rail assembly (3) and is positioned above the double-shaft rotating assembly (2);

the double-shaft rotating assembly (2) comprises a double-lug support (201), a first rotating assembly (202), a second rotating assembly (203) and an irregular curved surface workpiece (204), wherein the first rotating assembly (202) is fixed on the double-lug support (201) through symmetrically arranged bearing seats, the second rotating assembly (203) is installed on the first rotating assembly (202) through symmetrically arranged rotating shafts and connecting plates, and the irregular curved surface workpiece (204) can be clamped through three groups of spherical fingers (20307);

the first rotating assembly (202) comprises a first stepping motor (20201), a speed reducer (20202), a first diaphragm coupling (20203), a speed reducing motor mounting plate (20204), a right bearing seat (20205), a right rotating shaft (20206), a right connecting plate (20207), a left connecting plate (20208), a left rotating shaft (20209) and a left bearing seat (20210), the first stepping motor (20201) and the speed reducer (20202) form a speed reducing motor device, the speed reducing motor device is mounted on the double-lug bracket (201) through the speed reducing motor mounting plate (20204), one end of the first diaphragm coupling (20203) is coaxially matched with an output shaft of the speed reducer (20202), the other end of the first diaphragm coupling is connected with the right rotating shaft (20206), the right bearing seat (20205) and the left bearing seat (20210) are symmetrically arranged on the double-lug bracket (201), the right rotating shaft (20206) and the right bearing seat (20205) are coaxially mounted, the right connecting plate (20207) is fixedly connected, the same left rotating shaft (20209) and the left bearing seat (20210) are coaxially arranged, and the left connecting plate (20208) is fixedly connected with the left rotating shaft (20209);

the second rotating component (203) comprises a second stepping motor (20301), a frame-shaped motor bracket (20302), a U-shaped connecting block (20303), a second diaphragm coupling (20304), a three-jaw cylinder mounting plate (20305), a three-jaw cylinder (20306), a spherical finger (20307), a Z-shaped finger (20308), an air claw (20309) and an L-shaped mounting plate (20310), wherein the second stepping motor (20301) and the U-shaped connecting block (20303) are respectively arranged on the left side and the lower side of the frame-shaped motor bracket (20302), one end of the second diaphragm coupling (20304) is connected with an output shaft of the second stepping motor (20301), the other end is connected with a circular shaft of the three-jaw cylinder mounting plate (20305), the three-jaw cylinder (20306) is coaxially matched with the three-jaw cylinder mounting plate (20305), the spherical fingers (20307) are in T shape, the parallel end is matched with a moving slide block of the three-jaw cylinder (20306), and the vertical end is in a spherical structure, the irregular curved surface workpiece (204) can be clamped by inner support through surface contact, a pair of Z-shaped fingers (20308) are arranged on an air claw (20309), the air claw (20309) is fixed on one end surface of an L-shaped mounting plate (20310), and the L-shaped mounting plate (20310) is arranged on a frame-shaped motor bracket (20302) through a U-shaped connecting block (20303);

the lifting screw guide rail assembly (3) comprises a screw guide rail (301), a servo motor support (302) and a servo motor (303), the screw guide rail (301) is installed on the workbench (1), and the servo motor (303) is installed on the screw guide rail (301) through the servo motor support (302);

the laser head assembly (4) comprises a field lens (401), a laser range finder (402) and a laser head (403); the field lens (401) is arranged below the laser head (403) in the middle, and the laser range finder (402) is arranged on the end face of one side of the laser head (403) in the middle.

Technical Field

The invention belongs to the field of laser processing, and particularly relates to a laser marking device for an irregular curved surface workpiece.

Background

With the continuous progress of laser technology, the laser marker industry has also been rapidly developed. The laser marking technology is widely applied to various industries, along with the continuous expansion of market demands, the functional demands of various industries on laser marking equipment are more and more, so that the laser marking equipment is forced to be continuously updated to meet the needs of people, and particularly, higher requirements are provided for the laser marking of some irregular curved surface products, the cost of the equipment is limited to be too high at present, the complexity of the structure of the product is high, and the consistency of the production process of the equipment is difficult to ensure.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a laser marking device for irregular curved surface workpieces.

The invention is realized by the following technical scheme:

a laser marking device for irregular curved surface workpieces comprises a workbench, a double-shaft rotating assembly, a lifting lead screw guide rail assembly and a laser head assembly; the double-shaft rotating assembly is arranged in the middle of the workbench, and the laser head assembly is fixed on one side of the lifting lead screw guide rail assembly and is positioned above the double-shaft rotating assembly;

the double-shaft rotating assembly comprises a double-lug support, a first rotating assembly, a second rotating assembly and an irregular curved surface workpiece, wherein the first rotating assembly is fixed on the double-lug support through a bearing seat which is symmetrically arranged, the second rotating assembly is arranged on the first rotating assembly through a rotating shaft and a connecting plate which are symmetrically arranged, and the irregular curved surface workpiece can be clamped through three groups of spherical fingers;

the first rotating assembly comprises a first stepping motor, a speed reducer, a first diaphragm coupling, a speed reducing motor mounting plate, a right bearing seat, a right rotating shaft, a right connecting plate, a left rotating shaft and a left bearing seat, wherein the first stepping motor and the speed reducer form a speed reducing motor device and are mounted on a double-lug support through the speed reducing motor mounting plate;

the second rotating assembly comprises a second stepping motor, a frame-shaped motor support, a U-shaped connecting block, a second diaphragm coupling, a three-jaw air cylinder mounting plate, a three-jaw air cylinder, a spherical finger, a Z-shaped finger, an air jaw and an L-shaped mounting plate, the second stepping motor and the U-shaped connecting block are respectively mounted on the left side and the lower side of the frame-shaped motor support, one end of the second diaphragm coupling is connected with an output shaft of the second stepping motor, the other end of the second diaphragm coupling is connected with a circular shaft of the three-jaw air cylinder mounting plate, the three-jaw air cylinder and the three-jaw air cylinder mounting plate are coaxially matched and mounted, three groups, the parallel end of the three-jaw air cylinder is matched and connected with a movable sliding block of the three-jaw air cylinder through a hole, the vertical end of the three-jaw air cylinder is of a spherical structure, the irregular curved surface workpiece inner support can be clamped through surface contact, the Z-shaped fingers are arranged on the gas claw in a pair, the gas claw is fixed on one end face of the L-shaped mounting plate, and the L-shaped mounting plate is arranged on the frame-shaped motor support through the U-shaped connecting block.

The lifting screw guide rail assembly comprises a screw guide rail, a servo motor support and a servo motor, the screw guide rail is arranged on the workbench, and the servo motor is arranged on the screw guide rail through the servo motor support.

The laser head assembly comprises a field lens, a laser range finder and a laser head; the field lens is arranged below the laser head in the middle, and the laser range finder is arranged on the end face of one side of the laser head in the middle.

The invention has the following beneficial effects:

1. according to the structural particularity of the irregular curved surface workpiece and the process requirement of laser marking, the invention designs an alternate composite fixture device, namely a double-finger fixture component consisting of Z-shaped fingers and air claws and a three-finger fixture component consisting of a three-claw air cylinder and spherical fingers, wherein the outer end of a cylinder at the top of the irregular curved surface workpiece is clamped by the double-finger fixture component, then the three-finger fixture component is contacted with the arc inner surface of the workpiece through the spherical surfaces of the three spherical fingers to realize inner supporting and clamping, and then the double-finger fixture component is separated from the workpiece, so that the defects and the defects existing in a single fixture are effectively overcome: 1) due to the structural particularity of the workpiece, the workpiece deflects, falls off or is damaged in the machining process caused by factors such as insufficient contact area between the double-finger clamp and the clamped part of the workpiece, uneven stress and the like; 2) three-finger clamp assembly

2. According to the invention, through carrying out actions such as biaxial cooperative rotation and fine adjustment on the workpiece and combining the laser range finder and the electric lifting lead screw guide rail assembly, dynamic focusing, focusing and the like are quickly realized, so that a processed area is similar to a plane in a laser processing focal distance, and the cooperative fit between the clamp auxiliary device and the laser processing module can realize high-precision laser processing on curved surface workpieces with different curvatures and cross sizes, thereby obtaining the optimal processing quality.

Drawings

FIG. 1 is a schematic diagram of a laser marking device for irregular curved surface workpieces according to the present invention;

FIG. 2 is a block diagram of a dual-axis rotating assembly;

FIG. 3 is a block diagram of a first rotating assembly;

FIG. 4 is a block diagram of a second rotating assembly;

FIG. 5 is a block diagram of a lift screw guide rail assembly and a laser head assembly;

fig. 6 is a structural view of a ball finger.

The reference numerals in the figures have the following meanings:

a workbench 1, a double-shaft rotating assembly 2, a lifting lead screw guide rail assembly 3, a laser head assembly 4, a double-lug support 201, a first rotating assembly 202, a second rotating assembly 203, an irregular curved workpiece 204, a first stepping motor 20201, a speed reducer 20202, a first diaphragm coupling 20203, a speed reducer motor mounting plate 20204, a right bearing block 20205, a right rotating shaft 20206, a right connecting plate 20207, a left connecting plate 20208, a left rotating shaft 20209, a left bearing block 20210, a second stepping motor 20301, a frame-shaped motor support 20302, a U-shaped connecting block 20303, a second diaphragm coupling 20304, a three-jaw air cylinder mounting plate 05, a three-jaw air cylinder 20306, a spherical finger 20307, a Z-shaped finger 20308, an air jaw 20309, an L-shaped mounting plate 10, a lead screw guide rail 301, a servo motor support 302, a servo motor 303, a field lens 401, a laser range finder 402, a laser

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the laser marking device for irregular curved surface workpieces specifically comprises a workbench 1, a double-shaft rotating assembly 2, a lifting lead screw guide rail assembly 3 and a laser head assembly 4, wherein the double-shaft rotating assembly 2 is arranged in the middle of the workbench 1, and the laser head assembly 4 is fixed on one side of the lifting lead screw guide rail assembly 3 and is positioned above the double-shaft rotating assembly 2.

The double-shaft rotating assembly 2 comprises a double-lug support 201, a first rotating assembly 202, a second rotating assembly 203 and an irregular curved surface workpiece 204, wherein the first rotating assembly 202 is fixed on the double-lug support 201 through a bearing seat which is symmetrically arranged, the second rotating assembly 203 is arranged on the first rotating assembly 202 through a rotating shaft and a connecting plate which are symmetrically arranged, and the irregular curved surface workpiece 204 can be clamped through three groups of spherical fingers 20307;

the first rotating assembly 202 comprises a first stepping motor 20201, a speed reducer 20202, a first diaphragm coupling 20203, a speed reducer motor mounting plate 20204, a right bearing block 20205, a right rotating shaft 20206, a right connecting plate 20207, a left connecting plate 20208, a left rotating shaft 20209 and a left bearing block 20210, the first stepping motor 20201 and the speed reducer 20202 form a speed reducer motor device, and are mounted on the double-lug bracket 201 through the speed reducer motor mounting plate 20204, one end of the first diaphragm coupling 20203 is coaxially mounted with an output shaft of the speed reducer 20202 in a matching manner, the other end is connected with the right rotating shaft 20206, the right bearing block 20205 and the left bearing block 20210 are symmetrically arranged on the double-lug bracket 201, the right rotating shaft 20206 and the right bearing block 20205 are coaxially mounted, the right connecting plate 20207 is fixedly connected with the right rotating shaft 20206, the same left rotating shaft 20209 is coaxially mounted with the left bearing block 20210;

the second rotating component 203 comprises a second stepping motor 20301, a frame-shaped motor support 20302, a U-shaped connecting block 20303, a second diaphragm coupling 20304, a three-jaw cylinder mounting plate 20305, a three-jaw cylinder 20306, a spherical finger 20307, a Z-shaped finger 20308, an air jaw 20309, and an L-shaped mounting plate 20310, wherein the second stepping motor 20301 and the U-shaped connecting block 20303 are respectively mounted on the left side and the lower side of the frame-shaped motor support 20302, one end of the second diaphragm coupling 20304 is connected with an output shaft of the second stepping motor 20301, the other end is connected with a circular shaft of the three-jaw cylinder mounting plate 20305, the three-jaw cylinder 20306 and the three-jaw cylinder mounting plate 20305 are coaxially mounted in a matching manner, the spherical fingers 20307 are in three groups and are T-shaped, the parallel ends thereof are matched and connected with a moving slide block of the three-jaw cylinder 20306 through holes, the vertical ends are in a spherical structure, a non-regular curved surface workpiece 203204 can be internally supported by surface contact, the Z-shaped fingers 20308 are a pair mounted on, the L-shaped mounting plate 20310 is mounted on the frame-shaped motor bracket 20302 via a U-shaped connecting block 20303;

the lifting lead screw guide rail assembly 3 comprises a lead screw guide rail 301, a servo motor bracket 302 and a servo motor 303, wherein the lead screw guide rail 301 is arranged on the workbench 1, and the servo motor 303 is arranged on the lead screw guide rail 301 through the servo motor bracket 302;

the laser head assembly 4 comprises a field lens 401, a laser range finder 402 and a laser head 403; the field lens 401 is arranged below the laser head 403 in the center, and the laser range finder 402 is arranged on one side end face of the laser head 403 in the center.

The working process of the laser marking device for the irregular curved surface workpiece comprises the following steps:

firstly, a gas claw 20309 drives a pair of Z-shaped fingers 20308 to clamp the outer end of a cylinder of an irregular curved surface workpiece 204, then a three-claw cylinder 20306 drives three groups of spherical fingers 20307 to move outwards simultaneously, the inner surfaces of three spherical surfaces and the irregular curved surface workpiece 204 are clamped by inner support through surface contact, a two-finger clamp assembly is separated from the workpiece, then a first rotating assembly 202 is started to rotate the irregular curved surface workpiece 204 and a second rotating assembly 203 to a preset angle around the central axes thereof, a servo motor 303 drives a lead screw guide rail 301 to rotate through a feedback signal of a laser range finder 402, further drives a laser head assembly 4 to rapidly lift and reach a focal position preset by the laser range finder 402, laser emits light, according to the content and breadth of laser marking, the second rotating assembly 203 drives the irregular curved surface workpiece 204 to rotate in the processing process, the first rotating assembly 202 finely adjusts the second rotating assembly 203 and the irregular curved surface workpiece 204, meanwhile, under the assistance of the laser range finder 402, the lifting screw guide rail assembly 3 drives the laser head assembly 4 to perform relative height adjustment, dynamic focusing is kept constantly, after the machining is finished, the double-shaft rotating assembly 2, the lifting screw guide rail assembly 3 and the laser head assembly 4 are reset, and the machined irregular curved surface workpiece 204 is manually taken down from the three-finger clamp assembly.

It will be obvious to those skilled in the art that the present invention may be varied in many ways, and that such variations are not to be regarded as a departure from the scope of the invention. All such modifications as would be obvious to one skilled in the art are intended to be included within the scope of this claim.