CN114248024A - Positioning system for laser cutting - Google Patents
Positioning system for laser cutting Download PDFInfo
- Publication number
- CN114248024A CN114248024A CN202010996826.3A CN202010996826A CN114248024A CN 114248024 A CN114248024 A CN 114248024A CN 202010996826 A CN202010996826 A CN 202010996826A CN 114248024 A CN114248024 A CN 114248024A
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- product
- assembly
- jacking
- positioning system
- laser cutting
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The invention discloses a positioning system for laser cutting, which is used for positioning products in laser processing and comprises at least one pair of displacement sensing mechanisms and a processor, wherein the displacement sensing mechanisms are used for positioning the positions of the products; wherein, every displacement sensing mechanism all includes sensor assembly, removes subassembly, jacking subassembly. The sensor assembly acquires different position information of the product and sends the information to the processor, and the processor obtains the relative position information of the product after operation and analysis. The at least one pair of displacement sensing mechanisms collects data of the product position, the sensor assembly passes through the moving assembly and the jacking assembly and contacts with the edge of the product, the position of the product is sent to the processor, and the processor obtains relative position information of the product after operation and analysis. The whole positioning system for laser cutting is accurate in positioning process, and the machining precision of products can be guaranteed.
Description
Technical Field
The invention relates to the field of laser processing, in particular to a positioning system for laser cutting.
Background
With the development of technology, many products need to be processed with high precision.
The prior art scheme is that a product is clamped and ejected in the Z direction through an air cylinder, one side of the product is in a fixed mode side mode in the Y direction, and the workpiece is tightly pushed by the air cylinder on one side. When the conveying belt conveys the workpiece in place, the cylinder drives the positioning block or the positioning wheel to clamp the workpiece, and the other side of the workpiece is pushed onto the wheel on the fixed side or the positioning block. The workpiece is conveyed to a designated position and then touches the blocking cylinder to stop. And after the position is stopped, carrying out deep processing according to the actual application condition.
The prior art has the following defects:
(1) when the cylinder is jacked, the air pressure is insufficient or the stroke is not pushed in place, the precision of the position of the product cannot be guaranteed, the yield is reduced, and even the product is scrapped.
(2) The Y direction adopts the mode that the cylinder was released to carry out the regular location's of product mode, and the work piece just can promote the work piece when moving, if push away the work piece under the condition of not moving firmly, has to push away the risk that does not put in place, causes the size of product processing unqualified. The manner of blocking the cylinder positioning is also unstable, and the debugging is troublesome. If the product needs high precision, the specification switching of the product can be performed quickly and is basically impossible.
(3) The Y direction is loaded down with trivial details in installation debugging when changing the specification of product, and the fixed limit location of removal does not have the benchmark, and the debugging cycle is long.
(4) The positioning mode of lateral pushing, clamping and blocking is low in efficiency and poor in economic benefit.
Disclosure of Invention
The invention aims to provide a laser cutting positioning system which is simple in structure and accurate in positioning.
The invention discloses a positioning system for laser cutting, which is used for positioning products in laser processing and comprises at least one pair of displacement sensing mechanisms and a processor, wherein the displacement sensing mechanisms are used for positioning the positions of the products;
each displacement sensing mechanism comprises a sensor assembly, a moving assembly and a jacking assembly, wherein the sensor assembly is mounted on the jacking assembly and can be lifted relative to the jacking assembly, the jacking assembly is mounted on the moving assembly and can move relative to the moving assembly, and the jacking assembly is used for driving the sensor assembly to contact with the edge of a product to be processed;
the sensor assembly acquires different position information of the product and sends the information to the processor, and the processor obtains the relative position information of the product after operation and analysis.
And the device further comprises two pairs of displacement sensing mechanisms, wherein one pair of displacement sensing mechanisms are used for being arranged on two shorter sides of the product to be processed, and the other pair of displacement sensing mechanisms are used for being arranged on two longer sides of the product to be processed.
Furthermore, the sensor assembly comprises a bottom plate fixed on the jacking assembly, and a probe, a displacement sensor, a guide rod and an elastic piece which are arranged on the bottom plate, wherein the probe is arranged at the end part of the guide rod, the elastic piece is sleeved outside the guide rod, and the displacement sensor pushes out the guide rod through the elastic piece, so that the probe is pushed out to contact with a product.
Furthermore, the sensor assembly further comprises a push-out cylinder, a connecting plate is mounted on an output shaft of the push-out cylinder, and when the push-out cylinder drives the connecting plate to retreat, the guide rod is tightly abutted to the connecting plate under the extrusion of the elastic piece.
Furthermore, an elastic plate is arranged on the connecting plate, and the probe is closer to a product to be processed than the elastic plate.
Furthermore, the side of the connecting plate is provided with a blocking table, the outer wall of the guide rod is provided with a flange, and the flange can be abutted against the blocking table.
Further, the moving assembly comprises a motor, a guide rail, a sliding block matched with the guide rail and a connecting block fixed on the sliding block, the sliding block is mounted on an output shaft of the motor and can slide along the guide rail, and the jacking assembly is fixed on the connecting block.
The sliding block is connected with the screw rod nut, and the motor drives the screw rod to rotate so as to drive the sliding block on the screw rod nut to move along the guide rail.
Further, the jacking assembly comprises a fixing plate fixed on the connecting block, a jacking cylinder installed on the fixing plate, and a top plate fixed at the output end of the jacking cylinder, and the sensor assembly is installed on the top plate.
Further, the jacking subassembly still includes the direction subassembly, the direction subassembly including install in the jacking guide rail of fixed plate jacking slider that the jacking guide rail matches, be fixed in the mounting panel of jacking slider, the roof is fixed in the top of mounting panel.
This technical scheme adopts the collection that carries out the data of product position at least a pair of displacement sensing mechanism to the product, and the edge of removal subassembly, the jacking subassembly that the sensor subassembly passes through contact the product, and the processor is sent to the position of product, obtains the relative position information of product after the processor operation analysis. The whole positioning system for laser cutting is accurate in positioning process, and the machining precision of products can be guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a positioning system for laser cutting according to the present invention.
Fig. 2 is a schematic diagram of the displacement sensing mechanism of the positioning system for laser cutting according to the present invention.
Fig. 3 is a schematic structural diagram of a moving assembly and a jacking assembly of the positioning system for laser cutting according to the present invention.
Fig. 4 is a top view of a sensor assembly of the positioning system for laser cutting according to the present invention.
FIG. 5 is a partial view of a sensor assembly of the positioning system of the laser cutting of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to specific embodiments and drawings of the specification.
Referring to fig. 1, the present invention discloses a positioning system for laser cutting, which is used for positioning a product 20 for laser processing, and includes at least a pair of displacement sensing mechanisms 10 for positioning the product, and a processor, wherein the displacement sensing mechanisms 10 are in signal connection with the processor, and each pair of displacement sensors is located at opposite sides of the product.
Referring to fig. 2, each displacement sensing mechanism 10 includes a sensor assembly 100, a moving assembly 300, and a jacking assembly 500. The sensor assembly 100 is installed in the jacking assembly 500 and can be lifted relative to the jacking assembly 500, the jacking assembly 500 is installed in the moving assembly 300 and can move relative to the moving assembly 300, and the jacking assembly 500 is used for driving the sensor assembly 100 to contact with the edge of a product to be processed.
The sensor assembly 100 collects different position information of the product and sends the information to the processor, and the processor obtains the relative position information of the product after operation and analysis.
The distance between the moving assembly 300 and the sensor assembly 100 driven by the jacking assembly 500 and the product can be 10-20mm different, so that the product cannot collide with the displacement sensing mechanism 10 during conveying. When the specification of the product or the workpiece is changed, the moving component 300 drives the sensor component 100 to rapidly move to the edge position away from the product or the workpiece only when the size of the product or the workpiece is input. If the size of the product or workpiece is determined, the moving assembly 300 stays at the current coordinate value, and the stay at the current position is the absolute position of the sensor assembly 100.
In this embodiment, the positioning system for laser cutting includes two pairs of the displacement sensing mechanisms 10, wherein one pair of the displacement sensing mechanisms 10 is used for being disposed on two shorter sides of the product to be processed, and the other pair of the displacement sensing mechanisms 10 is used for being disposed on two longer sides of the product to be processed.
When the product is conveyed to the designated position, the two pairs of displacement sensing mechanisms respectively collect data of the product. And the displacement sensing mechanism on the shorter side acquires the information of the stop position on the shorter side of the product. The displacement sensing mechanism with the longer side collects information of the long side of the product, information of the short side of the product and position information of stopping of the product, position information data are transmitted to the processor, and the processor carries out operation on the collected relative position information so as to achieve accurate positioning of the product.
Referring to fig. 3, the moving assembly 300 includes a motor 310, a guide rail 320, a slider engaged with the guide rail 320, and a connecting block 340 fixed to the slider, the slider is mounted on an output shaft of the motor 310 and is slidable along the guide rail 320, and the jacking assembly 500 is fixed to the connecting block 340.
In this embodiment, the moving assembly 300 further includes a screw rod installed on the output shaft of the motor 310, and a screw nut installed on the screw rod, the slider is connected to the screw nut, and the motor 310 drives the screw rod to rotate, so as to drive the slider on the screw nut to move along the guide rail 320.
Referring to fig. 3, when the motor 310 moves to drive the screw rod, the screw rod drives the nut, and the nut with the connecting block 340 moves, since the connecting block 340 is guided by the slide block and the guide rail 320 parallel to the screw rod. The motion of the connecting block 340 is a linear motion. In this embodiment, the 0 position of the moving assembly 300 is at the position of the origin, the guide rail 320 is provided with a positive limit point and a negative limit point, and the absolute position of the moving assembly 300 is a specific position moved from the 0 position according to the size of the product.
Referring to fig. 3, the jacking assembly 500 includes a fixing plate 510 fixed to the connecting block 340, a jacking cylinder 530 mounted on the fixing plate 510, and a top plate 550 fixed to an output end of the jacking cylinder 530, wherein the sensor assembly 100 is mounted on the top plate 550.
The jacking assembly 500 further comprises a guide assembly 501. The guide assembly 501 comprises a jacking guide rail 502 mounted on the fixing plate 510, a jacking sliding block 503 matched with the jacking guide rail 502, and a mounting plate 504 fixed on the jacking sliding block 503, and the top plate 550 is fixed on the top of the mounting plate 504. The guide assembly 501 is used for guiding the jacking cylinder 530 to push the top plate 550 to move up and down.
In this embodiment, when the displacement sensing mechanism 10 returns to the zero point position, the jacking cylinder 530 on the jacking assembly 500 automatically retracts to make the whole displacement sensor system lower than the lower surface of the product to move, so as to prevent the product from being mistakenly operated when the displacement sensing mechanism 10 returns to the zero point position to crash the displacement sensing system or the product.
In addition, when the moving assembly 300 moves to a set absolute position, the jacking cylinder 530 on the jacking assembly 500 is automatically lifted. After the product is processed, the jacking cylinder 530 on the jacking assembly 500 in the opposite direction retracts according to the direction of product discharge, so that the product is conveyed away.
Referring to fig. 3, 4 and 5, the sensor assembly 100 includes a bottom plate 110 fixed to the jacking assembly 500, a probe 120 mounted on the bottom plate, a displacement sensor 130, a guide rod 140 and an elastic member 150, the probe 120 is mounted at an end of the guide rod 140, the elastic member 150 is sleeved outside the guide rod 140, and the displacement sensor 130 pushes out the guide rod 140 through the elastic member 150, so as to push out the probe 120 to contact a product. In this embodiment, the elastic member 150 is a spring.
The sensor assembly 100 further comprises a push-out cylinder 101, a connecting plate 102 is mounted on an output shaft of the push-out cylinder 101, and when the push-out cylinder 101 drives the connecting plate 102 to retract, the guide rod 140 is pressed by the elastic member 150 to abut against the connecting plate 102. The pushing cylinder 101 pushes the connecting plate 102, the elastic member 150 is released, the probe 120 is pushed to pop up, and the elastic member 150 drives the guide rod 140 when pushing the probe 47 because the probe 120 is connected with the guide rod 140.
The connecting plate 102 is provided with an elastic plate 103, and the probe 120 is closer to a product to be processed than the elastic plate 103. In this embodiment, the elastic plate is made of acrylic rubber. When data needs to be collected, the pushing cylinder 101 pushes out to drive the connecting plate 102 to move, the connecting plate 102 drives the connected elastic plate 103 to move, and the elastic plate 103 pushes a product or a workpiece to be pre-positioned.
The side of the connecting plate 102 is provided with a blocking table, the outer wall of the guide rod 140 is provided with a flange 141, and the flange 141 can abut against the blocking table. In this embodiment, the blocking table is formed by forming a semicircular hole in the side edge of the connecting plate. The inner wall of the semicircular hole is provided with a groove to form a blocking platform.
The guide rod on the displacement sensor is not influenced by the stroke of the pushing cylinder when measuring a product or a workpiece, and the pushing cylinder does not directly drive the displacement sensor to push out when pushing out. The force on the displacement sensor is affected by the force of the spring. When the push-out cylinder drives the connecting plate to retract, the blocking table on the connecting plate is abutted against the flange of the guide rod to drive the guide rod on the displacement sensor to leave a product or a workpiece. The guide rod is pressed against the connecting plate under the influence of the elastic element. The stop table of the semicircular hole on the connecting plate is matched with the probe, when the pushing cylinder is pushed out to drive the displacement sensor assembly to collect data, the probe firstly contacts with a product or a workpiece, and then the elastic plate contacts with the product or the workpiece. In this embodiment, the probe is about 5mm higher than the spring plate, and the probe contacts the product or the workpiece earlier than the spring plate.
After the product of the displacement sensor assembly 100 is conveyed in place, the push-out cylinder on the displacement sensor assembly 100 pushes out to have a prepositioning position for the product. The air cylinder on the displacement sensor assembly 100 pushes out the edge which drives the displacement sensor to contact the product or the workpiece, and the coordinate value of the product or the workpiece is calculated according to the numerical value acquired by the displacement sensor.
The invention has at least the following technical effects:
the displacement sensor adopts a contact principle, and the processor analyzes and processes data acquired by the displacement sensor and measures the position or the size of an object. The probe of the displacement sensor is contacted with the workpiece, the processor can calculate the distance between the sensor and the measured object, and the corresponding coordinate value of the product is calculated through the analysis of the processor.
The moving sensor is characterized by belonging to contact type and being capable of carrying out continuous high-speed data acquisition. The displacement sensor can complete 1 or more times of measurement data in product processing, and a processor is used for matching and testing the product position and data for multiple times.
The displacement sensor obtains very fast response speed after the product is positioned, and because the displacement sensor has an absolute position relation, the product size precision error caused by the fact that the workpiece cannot stop at the position can be avoided.
The displacement positioning system used in the invention is composed of a group of movable mechanisms and a displacement sensor, after the product is in place, the air cylinder drives the displacement sensor to extend out to detect the workpiece, and because the displacement sensor has an absolute position relationship on a motion module, the size measured by a probe, and the relative position coordinates of the workpiece staying are accurately processed and calculated according to the absolute position relationship among the mechanisms collected by a plurality of displacement sensors through the absolute position relationship of the displacement sensor.
It should be noted that the above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A positioning system for laser cutting is used for positioning a product in laser processing and is characterized in that,
the displacement sensor comprises at least one pair of displacement sensing mechanisms and a processor, wherein the displacement sensing mechanisms are used for positioning the position of a product, signals of the displacement sensing mechanisms are in signal connection with the processor, and each pair of displacement sensors are positioned on opposite sides of the product;
each displacement sensing mechanism comprises a sensor assembly, a moving assembly and a jacking assembly, wherein the sensor assembly is mounted on the jacking assembly and can be lifted relative to the jacking assembly, the jacking assembly is mounted on the moving assembly and can move relative to the moving assembly, and the jacking assembly is used for driving the sensor assembly to contact with the edge of a product to be processed;
the sensor assembly acquires different position information of the product and sends the information to the processor, and the processor obtains the relative position information of the product after operation and analysis.
2. The positioning system for laser cutting according to claim 1, comprising two pairs of said displacement sensing mechanisms, wherein one pair of said displacement sensing mechanisms is arranged on two shorter sides of the product to be processed, and the other pair of said displacement sensing mechanisms is arranged on two longer sides of the product to be processed.
3. The laser cutting positioning system according to claim 1 or 2, wherein the sensor assembly comprises a bottom plate fixed on the jacking assembly, and a probe, a displacement sensor, a guide rod and an elastic member which are arranged on the bottom plate, the probe is arranged at the end of the guide rod, the elastic member is sleeved outside the guide rod, and the displacement sensor pushes out the guide rod through the elastic member, so that the probe is pushed out to contact the product.
4. The laser cutting positioning system of claim 3, wherein the sensor assembly further comprises a push-out cylinder, a connecting plate is mounted on an output shaft of the push-out cylinder, and the guide rod is pressed against the connecting plate by the elastic member when the push-out cylinder drives the connecting plate to retract.
5. The laser cutting positioning system of claim 4, wherein the connecting plate is provided with a spring plate, and the probe is closer to the product to be processed than the spring plate.
6. The laser cutting positioning system as claimed in claim 4, wherein the connecting plate is provided with a stop at a side thereof, and the guide rod is provided with a flange at an outer wall thereof, the flange being capable of abutting against the stop.
7. The laser cutting positioning system of claim 1, wherein the moving assembly comprises a motor, a guide rail, a sliding block engaged with the guide rail, and a connecting block fixed to the sliding block, the sliding block is mounted to an output shaft of the motor and is slidable along the guide rail, and the jacking assembly is fixed to the connecting block.
8. The laser cutting positioning system of claim 7, further comprising a lead screw mounted on an output shaft of the motor, and a lead screw nut mounted on the lead screw, wherein the slider is connected to the lead screw nut, and the motor rotates the lead screw to drive the slider on the lead screw nut to move along the guide rail.
9. The laser cutting positioning system of claim 7, wherein the jacking assembly comprises a fixing plate fixed to the connecting block, a jacking cylinder mounted on the fixing plate, and a top plate fixed to an output end of the jacking cylinder, and the sensor assembly is mounted on the top plate.
10. The laser cutting positioning system of claim 9, wherein the jacking assembly further comprises a guiding assembly, the guiding assembly comprises a jacking guide rail mounted on the fixed plate, a jacking slider matched with the jacking guide rail, and a mounting plate fixed on the jacking slider, and the top plate is fixed on the top of the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996826.3A CN114248024B (en) | 2020-09-21 | 2020-09-21 | Positioning system for laser cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996826.3A CN114248024B (en) | 2020-09-21 | 2020-09-21 | Positioning system for laser cutting |
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| CN114248024A true CN114248024A (en) | 2022-03-29 |
| CN114248024B CN114248024B (en) | 2024-03-19 |
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| CN202010996826.3A Active CN114248024B (en) | 2020-09-21 | 2020-09-21 | Positioning system for laser cutting |
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| US6539642B1 (en) * | 1999-03-03 | 2003-04-01 | Riken | Probe type shape measuring sensor, and NC processing equipment and shape measuring method using the sensor |
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| CN114248024B (en) | 2024-03-19 |
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