CN107009024B - The power and method for control speed being cut by laser when a kind of laser lift-off primacord - Google Patents
The power and method for control speed being cut by laser when a kind of laser lift-off primacord Download PDFInfo
- Publication number
- CN107009024B CN107009024B CN201710421868.2A CN201710421868A CN107009024B CN 107009024 B CN107009024 B CN 107009024B CN 201710421868 A CN201710421868 A CN 201710421868A CN 107009024 B CN107009024 B CN 107009024B
- Authority
- CN
- China
- Prior art keywords
- cutting
- laser
- primacord
- power
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0626—Energy control of the laser beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses the power and controlling technology of velocity that are cut by laser when a kind of laser lift-off primacord, belong to the manufacture field of explosive fuze cord.The following steps are included: 1) establish primacord Slicing Model for Foreign；2) according to Slicing Model for Foreign, the undetermined parameter in laser cutting model is determined by a large amount of cutting experiment；3) the on-line control power in the case where keeping laser cutting platform movement velocity constant, reaches optimum Cutting effect.The present invention can be obviously improved the cutting effect of laser lift-off primacord, by establishing primacord Slicing Model for Foreign, coordinates the relationship between laser cutting power and cutting speed, can realize to fast accurate the removal of primacord wrapping layer, the flange of cutting surfaces is reduced simultaneously, improves production efficiency.
Description
Technical field
The present invention relates to be cut by laser when a kind of a kind of processing method of explosive fuze cord, especially laser lift-off primacord
Power and method for control speed.
Background technique
The removing of primacord refers to the braiding layer of primacord end and plastic clad removal, and exposes certain length
Metal layer process.Removal primacord end is to give subsequent assembly sleeve to make the lead pipe of built-in medicament and silver-colored pipe leakage
Reserve interface.And the method for using the braiding layer and plastic clad of laser ablation end at present, there are following this problem:
Since in laser cutting process, the heat that laser generates can melt plastic clad, the packet that then a part is melted
Covering layer can be attached at the laser incision on primacord surface, generate flange.If laser energy will excessively cause primacord surface
The larger flange of incision, and braided fabric can burn sooting silver pipe, influence the progress of subsequent handling；If laser energy is very few,
Scheduled primacord depth of cut is not achieved, is unable to complete production task.
In view of the above problems, in order to improve cutting effect when laser ablation primacord wrapping layer, the present invention is mentioned
The power being cut by laser when a kind of laser lift-off primacord and method for control speed have been supplied, has realized the on-line control of laser power,
And regulative mode is continuous online dynamic regulation, so that the case where cutting profile is not in out-of-flatness, improves product
Quality.There is presently no similar control methods.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of controlling parties of removal effect for improving laser lift-off primacord
Method, this method can effectively reduce the flange of cutting surfaces.This method carries out the removing of primacord with laser, is swashed by on-line control
The relationship of light cutting power and cutting speed, the laser energy for receiving primacord can just remove its wrapping layer, but same
When make cutting surfaces not generate flange as far as possible.
The power and method for control speed being cut by laser when laser lift-off primacord, it is comprised the steps of:
Step 1: primacord Slicing Model for Foreign is established；
Step 2: according to Slicing Model for Foreign, the undetermined parameter in laser cutting model is determined by a large amount of cutting experiment；
Step 3: the on-line control power in the case where keeping laser cutting platform movement velocity constant reaches optimum Cutting
Effect.
Advantageous effects of the invention are as follows: the present invention is cut by laser between power and cutting speed by matching and coordination
Relationship can guarantee the smooth of removal face, not generate flash, be conducive to subsequent manufacturing procedure；It provides simultaneously a kind of novel
Slicing Model for Foreign has reference function to the improvement of similar processing technology.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides the following drawings progress
Illustrate:
The primacord of power and method for control speed that Fig. 1 is cut by laser when being laser lift-off primacord of the present invention is cut
Cut illustraton of model
The laser cutting of power and method for control speed that Fig. 2 is cut by laser when being laser lift-off primacord of the present invention
The on-line control figure of power and speed
The program circuit of power and method for control speed that Fig. 3 is cut by laser when being laser lift-off primacord of the present invention
Figure
Specific embodiment
Below in conjunction with the attached drawing, implementation process of the invention is described in detail.
The primacord of power and method for control speed that Fig. 1 is cut by laser when being laser lift-off primacord of the present invention is cut
Illustraton of model is cut, by taking diameter is the primacord of 8mm as an example, its section is divided into 20 layers, respectively L1, L2, L3 ... L20, it is each
The thickness of layer is 0.4mm.Later, calculate each layer of sectional area S1, S1, S3 ... S20, it is assumed that the power of laser cutting with
Its sectional area is directly proportional, then cutting each layer of laser power can determine roughly.The case where cutting speed immobilizes
Under, the time of each layer of laser cutting is identical, it is assumed that the time of each layer of cutting is T1, every the time of T1, with regard to basis
Sectional area is than changing primary laser cutting power.
The laser cutting of power and method for control speed that Fig. 2 is cut by laser when being laser lift-off primacord of the present invention
The on-line control figure of power and speed, wherein P (t) indicates the cutting power of laser, and position indicates the position that primacord is cut.
During laser lift-off primacord, when cutting speed immobilizes, the time of each layer of laser cutting is identical, it is assumed that
The time for cutting each layer is T1, every the time of T1, just according to sectional area than changing primary laser cutting power.It is cutting
During, each layer of sectional area can become larger, required because the power of laser cutting is directly proportional to its sectional area
Laser cutting power also become larger, when laser switches to that layer of primacord middle, sectional area is maximum, required
Laser energy is most, and laser cutting power is also just maximum；Then, each layer of sectional area can become smaller, laser energy needed for cutting
Become smaller, is cut by laser power also just as the time becomes smaller.Therefore, the variation for the position that laser cutting power is cut with primacord
Relationship is as shown in Figure 2.
The program circuit of power and method for control speed that Fig. 3 is cut by laser when being laser lift-off primacord of the present invention
Figure, the specific implementation steps are as follows:
(1) Slicing Model for Foreign is established, primacord section is divided into n-layer, is L1、L2…Ln, with a thickness of d1, and calculate respectively
Each layer of sectional area out, sectional area are directly proportional to laser energy needed for cutting；
(2) assume the depth of cut of primacord and the energy exponentially pattern type of laser,Wherein Q table
Laser energy needed for showing cutting, L are the depth of cut of primacord, k0、k1It is undetermined parameter；Fixed laser cutting power P1No
Become, takes 20 groups of different cutting speeds, record the corresponding primacord depth of cut Lx of each speed, and calculate each cutting
Laser energy QX, Q=P × d/v, P are laser power, and d is primacord diameter, and v is cutting speed；Use data processing work
Tool carries out exponential fitting to above-mentioned 20 groups of data, obtains the relationship of the depth of cut of primacord and the energy of laser；
(3) relationship obtained according to step (2), laser energy needed for each layer of cutting can be calculated.So
Laser power needed for each layer of cutting can be calculated as formula Q1=P1*d1/v1 afterwards, wherein Q1 represents laser energy, and P1 is
It is cut by laser power, the thickness that d1 is each layer, v1 represents fixed cutting speed；
(4) sequence ascending by cutting speed, removes always primacord with firm power P, finds and shell under the power
Maximum speed Vmax from primacord；
(5) in the case where fixed cutting speed Vmax is constant, according to each layer of primacord determining of laser of step (3)
Cutting power, on-line control are cut by laser power, remove primacord, and observe cutting effect；
(6) if cut surface is more smooth, surface does not hurt the metal circular tube of primacord without flash, then just remembering
Above-mentioned experiment parameter under record.Otherwise, the cutting speed before just finely tuning, then repeatedly step (5), if cutting effect is still paid no attention to
Think, then continuing to adjust cutting speed, repeats step (5), until reaching above-mentioned ideal effect, and record at this time
Every experiment parameter.
It further illustrates, according to formula in step (3)It can calculate and cut to depth LiIt is deep with arriving
Spend Li+1Required laser energy, the latter subtract the former, and result is cutting primacord Li+1Energy needed for layer；
It further illustrates, the laser cutting power regulation concrete operations in step (5) and step (6) are each cutting speed
Under degree after cutting, the substantially cutting situation of first careful each layer of observation, it is next then to adjust each layer of cutting power progress
Secondary cutting；Repeatedly after adjustment power, if cutting effect is still undesirable, then cutting speed could be adjusted；Then this tune is being fixed
Cutting speed after whole repeats step (5).
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (1)
1. the power and method for control speed that are cut by laser when a kind of laser lift-off primacord, it is characterised in that, specific steps are such as
Under:
1) primacord Slicing Model for Foreign is established；
2) according to Slicing Model for Foreign, the undetermined parameter in laser cutting model is determined by a large amount of cutting experiment；
3) the on-line control power in the case where keeping laser cutting platform movement velocity constant, reaches optimum Cutting effect；
Wherein, specific step is as follows for step 1) completion:
Primacord section 1-1) is divided into n-layer, L1、L2…Ln；
1-2) calculate each layer of sectional area Si, pay attention to the sectional area of metal tube and medicament layer to be removed, sectional area and cutting
Required laser energy is directly proportional；(i=1,2,3 ... n)
Wherein, specific step is as follows for step 2) completion:
2-1) assume primacord depth of cut and laser energy atWherein Q indicates to swash needed for cutting
Light energy, L are the depth of cut of primacord, k0、k1It is undetermined parameter；
2-2) first fixed laser cutting power P1It is constant, take 20 groups of different cutting speeds, record each speed it is corresponding lead it is quick-fried
Rope depth of cut Lx, and calculate the laser energy Q cut every timeX, Q=P × d/v, P are laser power, and d is that primacord is straight
Diameter, v are cutting speed；
Both data processing tools 2-3) are used, the energy of depth of cut and laser to primacord carries out exponential fitting, obtain
Relationship；
Laser power can be according to cutting speed and depth, adaptive regulation power size, so that the coplanar flat of primacord
It is bright and clean, without overlap and serious protrusion, can also avoid power it is excessive caused by braided fabric burning sooting silver pipe the case where；
Wherein, specific step is as follows for step 3) completion:
3-1) the relationship obtained according to step (2)It can calculate and swash needed for each layer of cutting
Light energy, laser power needed for then can calculating each layer of cutting as formula Q1=P1*d1/v1, wherein Q1 represents laser
Energy, P1 are to be cut by laser power, and the thickness that d1 is each layer, v1 represents fixed cutting speed；
3-2) the sequence ascending by cutting speed, removes always primacord with firm power P, finds removing under the power and leads
The maximum speed Vmax of quick-fried rope；
3-3) in the case where fixed cutting speed Vmax is constant, according to each layer of primacord determining of laser of step (3-1)
Cutting power, on-line control are cut by laser power, remove primacord, and observe cutting effect；
If 3-4) cut surface is more smooth, surface does not hurt the metal circular tube of primacord without flash, then just recording
Above-mentioned experiment parameter；Otherwise, the cutting speed before just finely tuning, then repeatedly step (3-3), if cutting effect is still paid no attention to
Think, then continuing to adjust cutting speed, repeats step (3-3), until reaching above-mentioned ideal effect, and record at this time
Every experiment parameter；
According to formula in step (3-1)It can calculate and cut to depth LiWith arrive depth Li+1Required swashs
Light energy, the latter subtract the former, and result is cutting primacord Li+1Energy needed for layer；
Laser cutting power regulation concrete operations in step (3-3) and step (3-4) are, after being cut under each cutting speed,
The substantially cutting situation for wanting first careful each layer of observation, then adjusts each layer of cutting power and is cut next time；Repeatedly
After adjusting power, if cutting effect is still undesirable, then cutting speed could be adjusted；Then this cutting speed adjusted is being fixed
Degree repeats step (3-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421868.2A CN107009024B (en) | 2017-06-07 | 2017-06-07 | The power and method for control speed being cut by laser when a kind of laser lift-off primacord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421868.2A CN107009024B (en) | 2017-06-07 | 2017-06-07 | The power and method for control speed being cut by laser when a kind of laser lift-off primacord |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107009024A CN107009024A (en) | 2017-08-04 |
| CN107009024B true CN107009024B (en) | 2019-05-31 |
Family
ID=59452374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710421868.2A Expired - Fee Related CN107009024B (en) | 2017-06-07 | 2017-06-07 | The power and method for control speed being cut by laser when a kind of laser lift-off primacord |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107009024B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951990B (en) * | 2022-04-29 | 2024-04-12 | 杨琦 | Power self-adaptive control method for laser welding |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6477767B1 (en) * | 1999-12-06 | 2002-11-12 | Hon Hai Precision Ind. Co., Ltd. | Method for removing a braiding layer of a coaxial cable |
| FR2992784B1 (en) * | 2012-06-29 | 2015-08-07 | Laselec | DEVICE FOR STRIPPING ELECTRIC CABLES USING VIOLET OR BLUE LASER DIODES |
| KR101682269B1 (en) * | 2013-09-25 | 2016-12-05 | 주식회사 엘지화학 | Laser Cutting apparatus and cutting method of the same |
| CN105186391A (en) * | 2015-08-13 | 2015-12-23 | 苏州大学 | Hybrid wavelength laser wire-stripping method and wire-stripping apparatus of wire sheaths |
| CN205029255U (en) * | 2015-09-24 | 2016-02-10 | 东莞市恒德光电设备制造有限公司 | Laser wire stripping machine |
| CN206029030U (en) * | 2016-08-31 | 2017-03-22 | 武汉华工激光工程有限责任公司 | Long superfine coaxial line wire stripping device |
| CN106312330B (en) * | 2016-10-11 | 2018-03-13 | 天津市金星空气压缩机制造股份有限公司 | A kind of cable or automobile oil pipe coating layer stripping machine |
-
2017
- 2017-06-07 CN CN201710421868.2A patent/CN107009024B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107009024A (en) | 2017-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9956648B2 (en) | Piercing metal workpieces by a laser beam | |
| CN106715033B (en) | Method for manufacturing workpiece face at the workpiece of stick | |
| JP6479793B2 (en) | Method and system for plasma cutting holes and contours in a workpiece | |
| CN105499810B (en) | A kind of laser cutting method and device on battery core pole piece | |
| CN105522283B (en) | A kind of control method of the parameters of laser cutting based on temperature field, apparatus and system | |
| CN107009024B (en) | The power and method for control speed being cut by laser when a kind of laser lift-off primacord | |
| CN110773885B (en) | Laser perforation method | |
| CN105108340A (en) | Molten drop transition control method for pipeline all-position laser-MAG composite welding | |
| CN109352190A (en) | A kind of laser drill control method | |
| CN108581191A (en) | A method of laser cutting path planning realizes that laser head stops light sky and moves avoidance | |
| CN108015425A (en) | A kind of process of laser ablation sapphire surface coating | |
| CN108296709A (en) | Metal center processing technology | |
| CN108436283A (en) | Laser marking machine and its marking method | |
| CN110369723B (en) | Laser power optimization method for 3D laser printing | |
| CN111195779B (en) | Laser cutting method and device | |
| CN109702361A (en) | A kind of laser bevel cutting method and laser cutting machine | |
| CN102837131A (en) | Production technique for machining light guide plate by laser | |
| CN112276344B (en) | Focus positioning method for ultrafast laser cutting of transparent material | |
| CN117025896B (en) | Heat treatment system | |
| CN109702326A (en) | A kind of devices and methods therefor improving laser boring depth | |
| CN107378250A (en) | Large-scale part laser melting coating impact based on CCD monitoring forges combined shaping method | |
| CN114160922A (en) | System and method for improving aluminum alloy GTAW WAAM precision and efficiency | |
| WO2024149402A1 (en) | Multi-layer multi-pass welding method and apparatus, and processor and welding system | |
| CN205614198U (en) | A device for laser lobe of a leaf | |
| CN107363416A (en) | A kind of laser ring cutter device and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 Termination date: 20200607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |