CN112496098A - Overtravel bending positioning process method for numerical control sheet metal machining - Google Patents
Overtravel bending positioning process method for numerical control sheet metal machining Download PDFInfo
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- CN112496098A CN112496098A CN202011255401.3A CN202011255401A CN112496098A CN 112496098 A CN112496098 A CN 112496098A CN 202011255401 A CN202011255401 A CN 202011255401A CN 112496098 A CN112496098 A CN 112496098A
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- 238000005452 bending Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000003754 machining Methods 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 37
- 238000005096 rolling process Methods 0.000 claims description 23
- 238000004080 punching Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000011179 visual inspection Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/002—Positioning devices
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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
- B23K26/362—Laser etching
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention specifically relates to an overtravel bending positioning process method for numerical control sheet metal machining, which belongs to the technical field of sheet metal machining, is provided aiming at the defect that the conventional sheet metal cannot realize accurate and rapid positioning of overtravel bending in the machining process, and comprises the following operation steps: s1, processing a V-shaped groove corresponding to the upper die cutting edge of the bending machine at the bending part of the upper surface of the workpiece; s2, horizontally placing the workpiece with the processed V-shaped groove on the lower die of the bending machine, and aligning and positioning the V-shaped groove and the cutting edge of the upper die of the bending machine; s3, when the upper die of the bending machine moves downwards and is pressed with the lower die of the bending machine, the cutting edge of the upper die of the bending machine is pressed into the V-shaped groove, and then the bending forming of the workpiece is realized. The invention has simple positioning operation, high processing efficiency and strong practicability, and is suitable for over-travel bending positioning of various types of numerical control sheet metal processing.
Description
The technical field is as follows:
the invention belongs to the technical field of sheet metal machining, and particularly relates to an over-travel bending positioning process method for numerical control sheet metal machining.
Background art:
the commonly used processing method at present for numerical control sheet metal processing comprises the following steps: numerical control contour machining → numerical control bending → clamp → surface treatment → inspection. The positioning and processing process of the conventional numerical control bending machine is shown in fig. 5 and 6, during processing, a workpiece 3 needs to be horizontally arranged between an upper die 1 and a lower die 2 of the bending machine, a rear gauge 4 is controlled by a numerical control program to be adjusted to a specified positioning size position, and after one end of the workpiece 3 is aligned with the plane of the rear gauge 4, the upper die 1 and the lower die 2 of the bending machine are pressed together to bend the workpiece 3. Because the numerical control bending machine has the limit size of the rear stop gauge positioning, the bending positioning exceeding the limit size is regarded as over-travel bending, the over-travel bending generally adopts the line marking at the bending position, the line marked by visual inspection is aligned and positioned with the upper die of the bending machine during the bending, and the actual positioning deviation generally exceeds 0.3-0.5 times of the thickness of the material during the processing by the manual line marking-visual inspection bending mode due to the combined action of the line marking positioning precision and the visual inspection precision, so that the bending mode has the advantages of low positioning precision, difficulty in ensuring higher precision grade, low efficiency and unsafe operation. If the positioning precision of the over-travel bending needs to be guaranteed, the existing method is to process a positioning tool stop block with a fixed size, the positioning tool stop block with the fixed size is adopted, the preparation period is long, the replacement and adjustment are complex, the method runs counter to the development idea of multi-variety, small-batch and intelligent rapid manufacturing, and the application advantage of the numerical control bending machine is greatly reduced.
The invention content is as follows:
the invention provides an over-travel bending positioning process method for numerical control sheet metal machining, aiming at overcoming the defect that the over-travel bending cannot be accurately and quickly positioned in the existing sheet metal machining process.
The technical scheme adopted by the invention is as follows: an over-travel bending and positioning process method for numerical control sheet metal machining comprises the following operation steps:
s1: a V-shaped groove matched with the upper die cutting edge of the bending machine is processed at the bending part of the upper surface of the workpiece,
s2: the workpiece with the processed V-shaped groove is horizontally arranged on the lower die of the bending machine, the V-shaped groove is aligned and positioned with the cutting edge of the upper die of the bending machine,
s3: when the upper die of the bending machine moves downwards and is pressed with the lower die of the bending machine, the cutting edge of the upper die of the bending machine is pressed into the V-shaped groove, and then the bending forming of the workpiece is realized.
Preferably, the shape of the upper die cutting edge of the bending machine is V-shaped with a non-R angle, and the V-shaped chamfer degree of the upper die cutting edge of the bending machine is 30-90 degrees.
Preferably, the processing depth of the V-shaped groove is 0.2-0.3 times of the thickness of the workpiece, and the width of the upper die cutting edge of the bending machine is not more than 0.5 times of the processing width of the V-shaped groove.
Preferably, in step S1, the V-shaped groove is processed by stamping, rolling, engraving or laser processing.
Preferably, the specific steps of the stamping are as follows: the method comprises the steps of firstly, incorporating the V-shaped groove processing into a numerical control processing program of a punch press, then, selecting a punching mode to process the V-shaped groove, punching a workpiece on a base plate from top to bottom by a punch during punching processing, wherein after the workpiece is flattened and fixed by an upper die holder, a punching die core is extruded at fixed pressure and depth to form a single-section V-shaped groove with fixed length, and the punch is continuously punched on the workpiece in multiple sections at fixed feeding intervals controlled by the numerical control program, so that the continuous V-shaped groove with equal depth is formed.
Preferably, the rolling comprises the following specific steps: the method comprises the steps of firstly, incorporating the V-shaped groove into a numerical control machining program of a punch press, then, selecting a rolling mode to machine the V-shaped groove, punching a workpiece on a base plate from top to bottom by a punch during rolling machining, flattening and fixing the workpiece by an upper die holder, extruding a roller fixed by a core shaft by the punch core with fixed pressure and fixed depth to form a single-point V-shaped groove with fixed depth, and horizontally moving the roller on the workpiece by the punch at a fixed speed controlled by the numerical control program to form a continuous and uniform V-shaped groove.
Preferably, in step S2, the alignment positioning includes visual positioning and laser positioning.
Preferably, the specific steps of the stamping are as follows: the method comprises the steps of firstly, incorporating the V-shaped groove into a numerical control machining program of a punch press, then, selecting a punching mode to machine the V-shaped groove, punching a workpiece on a base plate from top to bottom by a punch during punching, wherein the punch comprises a die holder and a die core arranged in the die holder, after the die holder flattens and fixes the workpiece, the die core extrudes the workpiece with fixed pressure and depth to form a single-section V-shaped groove with fixed length, and the punch is continuously punched on the workpiece in multiple sections at fixed feeding intervals controlled by the numerical control program, so that the continuous V-shaped groove with equal depth is formed.
Preferably, the rolling comprises the following specific steps: the method comprises the steps of firstly, incorporating the V-shaped groove into a numerical control machining program of a punch press, then, selecting a rolling mode to machine the V-shaped groove, and stamping a workpiece on a base plate from top to bottom by a rolling head during rolling machining, wherein the rolling head comprises a roller die holder, a roller die core arranged in the roller die holder and a roller arranged on the roller die core through a mandrel, after the workpiece is flattened and fixed by the roller die holder, the roller die core extrudes the roller fixed by the mandrel with fixed pressure and depth to form the single-point V-shaped groove with fixed depth, and the rolling head horizontally pushes the roller on the workpiece through fixed speed controlled by the numerical control program, so that the continuous and uniform V-shaped groove is.
The invention has the beneficial effects that:
1. according to the invention, the V-shaped groove is processed at the bending part of the workpiece in advance, the upper die cutting edge of the bending machine is matched with the V-shaped groove to realize accurate bending, and the problems of poor accuracy and low efficiency in the existing manual marking-visual inspection bending processing mode can be effectively avoided through accurate positioning.
2. The invention has simple positioning operation, high processing efficiency and strong practicability, and is suitable for over-travel bending positioning of various types of numerical control sheet metal processing.
Description of the drawings:
FIG. 1 is a schematic structural view of the positioning process of the present invention;
FIG. 2 is an enlarged view of a portion of the structure of FIG. 1 in a view along the bending line;
FIG. 3 is a schematic structural view of a stamping die;
FIG. 4 is a schematic structural view of a rolling die;
FIG. 5 is a schematic structural view of a positioning process in the prior art;
FIG. 6 is an enlarged view of a portion of the structure of FIG. 5 in a view along the bending line;
wherein: 1, 2, 3, 301V-shaped grooves, 4 rear stop gauges, 5 punches, 501 die cores, 502 die holders, 6 backing plates, 7 roller pressing heads, 701 roller die cores, 702 mandrels, 703 rollers and 704 roller die holders.
The specific implementation mode is as follows:
example 1
As shown in fig. 1 and 2, the invention relates to an over-travel bending positioning process method for numerical control sheet metal machining, which comprises the following operation steps:
s1: processing a V-shaped groove 301 which is matched with the cutting edge of the upper die 1 of the bending machine at the bending part on the upper surface of the workpiece 3, wherein the shape of the cutting edge of the upper die 1 of the bending machine is V-shaped with a non-R angle, the V-shaped chamfer degree of the cutting edge of the upper die 1 of the bending machine is 30-90 degrees, the preferable V-shaped angle is 30 degrees, 60 degrees, 85 degrees, 88 degrees and 90 degrees, and the width of the cutting edge of the upper die 1 of the bending machine is not more than 0.5 time of the processing width of the V-.
In order to guarantee the strength of the workpiece 3 after bending, the machining depth of the V-shaped groove 301 is not more than 0.2 time of the thickness of the workpiece 3, and the limit machining depth is not more than 0.3 time of the thickness of the workpiece 3.
The V-shaped groove 301 can be processed in various manners, such as stamping.
The stamping method comprises the following specific steps: firstly, the V-shaped groove 301 is processed and incorporated into a numerical control processing program of a numerical control turret punch press, then the V-shaped groove 301 is processed in a stamping mode, during stamping, a punch 5 stamps the workpiece 3 on a base plate 6 from top to bottom, as shown in fig. 3, the punch 5 comprises a die holder 502 and a die core 501 arranged in the die holder 502, after the die holder 502 flattens and fixes the workpiece 3, the die core 501 extrudes with fixed pressure and depth to form the single-section fixed-length V-shaped groove 301, and the punch 5 continuously punches on the workpiece 3 in multiple sections through a fixed feeding interval controlled by the numerical control program, so that the continuous equal-depth V-shaped groove 301 is formed. When the numerical control turret punch press is adopted to select the stamping die, the depth of the V-shaped groove 301 processed by the numerical control turret punch press can be freely adjusted to adapt to the thickness of different workpieces 3, and the punch 5 and the backing plate 6 are allowed to be vertically exchanged so as to process the V-shaped groove 301 on the upper surface and the lower surface of the workpiece 3.
S2: the workpiece 3 which is processed with the V-shaped groove 301 is horizontally arranged on the lower die 2 of the bending machine, and then the V-shaped groove 301 and the cutting edge of the upper die 1 of the bending machine are aligned and positioned, and the alignment and positioning of the embodiment adopt a visual inspection mode.
The specific steps of visual positioning are as follows: when the workpiece 3 with the processed V-shaped groove 301 is horizontally arranged on the lower die 2 of the bending machine, the position between the V-shaped groove 301 and the cutting edge of the upper die 1 of the bending machine is visually observed manually to realize preliminary coarse positioning, and in the pressing process that the upper die 1 of the bending machine slowly moves downwards towards the direction of the workpiece 3, the position between the cutting edge of the upper die 1 of the bending machine and the V-shaped groove 301 on the workpiece 3 is continuously adjusted manually to align the two to realize accurate positioning.
S3: when the upper die 1 of the bending machine moves downwards and is pressed with the lower die 2 of the bending machine, the cutting edge of the upper die 1 of the bending machine is pressed into the V-shaped groove 301, and then the bending forming of the workpiece 3 is realized.
Example 2
The laser positioning comprises the following specific steps: the laser emitting direction of a laser emitter on the upper die 1 of the bending machine is adjusted, the emitted laser is located under the cutting edge of the upper die 1 of the bending machine, when a workpiece 3 which is processed into the V-shaped groove 301 is horizontally arranged on the lower die 2 of the bending machine, the position of the workpiece 3 is adjusted, laser rays are emitted into the V-shaped groove 301, and when the upper die 1 of the bending machine moves downwards to the surface of the laser rays which are in contact with the workpiece 3, the accurate positioning between the cutting edge of the upper die 1 of the bending machine and the V-shaped groove 301 is realized.
Example 3
Example 3 is different from example 1 only in the processing manner of the V-shaped groove 301, and the processing manner of the V-shaped groove 301 in example 3 is a rolling processing manner.
The rolling comprises the following specific steps: firstly, the V-shaped groove 301 is processed and incorporated into a numerical control processing program of a punch press of a numerical control turret punch press, then the rolling mode is selected to process the V-shaped groove 301, and during the rolling processing, the rolling head 7 is punched to the workpiece 3 positioned on the backing plate 6 from top to bottom, as shown in fig. 4, the rolling head 7 comprises a roller die holder 704, a roller die core 701 installed in the roller die holder 704, and a roller 703 installed on the roller die core 701 through a mandrel 702, after the roller die holder 704 flattens and fixes the workpiece 3, the roller die core 701 extrudes the roller 703 fixed by the mandrel 702 with a fixed pressure and a fixed depth to form the single-point V-shaped groove 301 with a fixed depth, and the roller head 7 horizontally moves at a fixed speed controlled by the numerical control program to push the roller 703 on the workpiece 3, so. When the rolling die is selected, the depth of the V-shaped groove 301 processed by the numerical control turret punch press can be freely adjusted to adapt to the thickness of different workpieces 3, and the rolling head 7 and the backing plate 6 are allowed to be vertically exchanged so as to process the V-shaped groove 301 on the upper surface and the lower surface of the workpiece 3.
Example 4
The laser positioning comprises the following specific steps: the laser emitting direction of a laser emitter on the upper die 1 of the bending machine is adjusted, the emitted laser is located under the cutting edge of the upper die 1 of the bending machine, when a workpiece 3 which is processed into the V-shaped groove 301 is horizontally arranged on the lower die 2 of the bending machine, the position of the workpiece 3 is adjusted, laser rays are emitted into the V-shaped groove 301, and when the upper die 1 of the bending machine moves downwards to the surface of the laser rays which are in contact with the workpiece 3, the accurate positioning between the cutting edge of the upper die 1 of the bending machine and the V-shaped groove 301 is realized.
Example 5
Example 5 differs from example 1 only in the processing manner of the V-shaped groove 301, and the processing manner of the V-shaped groove 301 in example 5 is an engraving processing manner.
In the engraving process, the workpiece 3 is placed on a table of an engraving machine, and a V-shaped groove 301 is engraved in the workpiece 3 by a laser head of the engraving machine.
Example 6
The laser positioning comprises the following specific steps: the laser emitting direction of a laser emitter on the upper die 1 of the bending machine is adjusted, the emitted laser is located under the cutting edge of the upper die 1 of the bending machine, when a workpiece 3 which is processed into the V-shaped groove 301 is horizontally arranged on the lower die 2 of the bending machine, the position of the workpiece 3 is adjusted, laser rays are emitted into the V-shaped groove 301, and when the upper die 1 of the bending machine moves downwards to the surface of the laser rays which are in contact with the workpiece 3, the accurate positioning between the cutting edge of the upper die 1 of the bending machine and the V-shaped groove 301 is realized.
Example 7
Example 7 is different from example 1 only in the processing manner of the V-shaped groove 301, and the processing manner of the V-shaped groove 301 in example 7 is a laser processing manner.
In the laser processing, the workpiece 3 is placed on a table of a laser processing system, and the V-shaped groove 301 is formed on the workpiece 3 by laser light.
Example 8
Embodiment 8 differs from embodiment 7 only in the way of alignment positioning, and the alignment positioning in embodiment 8 adopts a laser positioning way.
The laser positioning comprises the following specific steps: the laser emitting direction of a laser emitter on the upper die 1 of the bending machine is adjusted, the emitted laser is located under the cutting edge of the upper die 1 of the bending machine, when a workpiece 3 which is processed into the V-shaped groove 301 is horizontally arranged on the lower die 2 of the bending machine, the position of the workpiece 3 is adjusted, laser rays are emitted into the V-shaped groove 301, and when the upper die 1 of the bending machine moves downwards to the surface of the laser rays which are in contact with the workpiece 3, the accurate positioning between the cutting edge of the upper die 1 of the bending machine and the V-shaped groove 301 is realized.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An over-travel bending and positioning process method for numerical control sheet metal machining is characterized by comprising the following operation steps of:
s1: a V-shaped groove (301) which is matched with the cutting edge of the upper die (1) of the bending machine is processed at the bending part of the upper surface of the workpiece (3),
s2: the workpiece (3) with the processed V-shaped groove (301) is horizontally arranged on the lower die (2) of the bending machine, then the V-shaped groove (301) is aligned and positioned with the cutting edge of the upper die (1) of the bending machine,
s3: when the upper die (1) of the bending machine moves downwards and is pressed with the lower die (2) of the bending machine, the cutting edge of the upper die (1) of the bending machine is pressed into the V-shaped groove (301), and then the bending and pressing forming of the workpiece (3) is realized.
2. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 1, characterized in that: the shape of the cutting edge of the upper die (1) of the bending machine is V-shaped with a non-R angle, and the degree of V-shaped chamfer angle of the cutting edge of the upper die (1) of the bending machine is between 30 and 90 degrees.
3. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 1 or 2, characterized in that: the processing depth of the V-shaped groove (301) is 0.2-0.3 times of the thickness of the workpiece (3), and the width of the cutting edge of the upper die (1) of the bending machine is not more than 0.5 times of the processing width of the V-shaped groove (301).
4. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 3, characterized in that: in step S1, the V-shaped groove (301) is processed by stamping, rolling, engraving or laser processing.
5. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 4, characterized in that: the stamping method comprises the following specific steps: firstly, machining a V-shaped groove (301) into a numerical control machining program of a punch press, then machining the V-shaped groove (301) by selecting a punching mode, and during punching machining, punching a workpiece (3) on a base plate (6) by a punch (5) from top to bottom, wherein the punch (5) comprises a punching die holder (502) and a punching die core (501) arranged in the punching die holder (502), after the workpiece (3) is flattened and fixed by the punching die holder (502), the punching die core (501) is extruded with fixed pressure and depth to form the single-section fixed-length V-shaped groove (301), and the punch (5) is continuously punched on the workpiece (3) in multiple sections at fixed feeding intervals controlled by the numerical control program, so that the continuous equal-depth V-shaped groove (301) is formed.
6. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 4, characterized in that: the rolling comprises the following specific steps: firstly, machining a V-shaped groove (301) into a numerical control machining program of a punch press, then machining the V-shaped groove (301) by selecting a rolling mode, and during rolling machining, stamping a roller pressing head (7) to a workpiece (3) on a base plate (6) from top to bottom, wherein the roller pressing head (7) comprises a roller die holder (704), a roller die core (701) arranged in the roller die holder (704), and a roller (703) arranged on the roller die core (701) through a mandrel (702), after the roller die holder (704) flattens and fixes the workpiece (3), the roller die core (701) extrudes the roller (703) fixed by the mandrel (702) with fixed pressure and depth to form the single-point V-shaped groove (301) with fixed depth, and the roller pressing head (7) horizontally pushes the roller (703) on the workpiece (3) at fixed speed controlled by the numerical control program, so that the continuous and uniform V-shaped groove (301) is.
7. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 3, characterized in that: in step S2, the alignment positioning includes visual positioning and laser positioning.
8. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 7, characterized in that: the specific steps of visual positioning are as follows: when a workpiece (3) which is processed with the V-shaped groove (301) is horizontally arranged on the lower die (2) of the bending machine, the position between the V-shaped groove (301) and the cutting edge of the upper die (1) of the bending machine is visually observed manually to realize preliminary coarse positioning, and in the pressing process that the upper die (1) of the bending machine slowly moves downwards towards the workpiece (3), the position between the cutting edge of the upper die (1) of the bending machine and the V-shaped groove (301) on the workpiece (3) is continuously adjusted manually to ensure that the cutting edge and the V-shaped groove are aligned to realize accurate positioning.
9. The overtravel bending positioning process method for numerical control sheet metal machining according to claim 7, characterized in that: the laser positioning comprises the following specific steps: the laser emitting direction of a laser emitter on an upper die (1) of the bending machine is adjusted, the emitted laser is located under the cutting edge of the upper die (1) of the bending machine, when a workpiece (3) which is processed with a V-shaped groove (301) is horizontally arranged on a lower die (2) of the bending machine, the position of the workpiece (3) is adjusted, laser rays are emitted into the V-shaped groove (301), and when the upper die (1) of the bending machine moves downwards to the surface of the laser rays contacting the workpiece (3), the accurate positioning between the cutting edge of the upper die (1) of the bending machine and the V-shaped groove (301) is realized.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11185951B2 (en) * | 2019-06-06 | 2021-11-30 | Fox Hardwood Lumber Company, L.L.C. | Method of manufacturing a curved brace |
| CN114192620A (en) * | 2021-12-09 | 2022-03-18 | 航天科工哈尔滨风华有限公司 | Machining method for rolling cone by using bending machine |
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| CN209716128U (en) * | 2019-03-14 | 2019-12-03 | 苏州嘉盛科技电讯有限公司 | A kind of full-automatic bending machine of metal plate |
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| US11185951B2 (en) * | 2019-06-06 | 2021-11-30 | Fox Hardwood Lumber Company, L.L.C. | Method of manufacturing a curved brace |
| CN114192620A (en) * | 2021-12-09 | 2022-03-18 | 航天科工哈尔滨风华有限公司 | Machining method for rolling cone by using bending machine |
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