CN207358166U - A kind of selective laser melting unit - Google Patents
A kind of selective laser melting unit Download PDFInfo
- Publication number
- CN207358166U CN207358166U CN201721401220.0U CN201721401220U CN207358166U CN 207358166 U CN207358166 U CN 207358166U CN 201721401220 U CN201721401220 U CN 201721401220U CN 207358166 U CN207358166 U CN 207358166U
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- Prior art keywords
- scraper
- milling cutter
- selective laser
- laser melting
- melting unit
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- 238000002844 melting Methods 0.000 title claims abstract description 29
- 230000008018 melting Effects 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000003801 milling Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000007480 spreading Effects 0.000 claims abstract description 13
- 238000003892 spreading Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 239000007769 metal material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000000227 grinding Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Laser Beam Processing (AREA)
Abstract
The utility model discloses a kind of selective laser melting unit, including rigid power spreading device, milling cutter topping machanism and control device；The rigidity power spreading device includes scraper mechanism, guide rail mechanism, actuating unit and overload current testing agency, and actuating unit drives scraper mechanism to be moved along guide rail mechanism, and overload current testing agency is arranged in scraper mechanism and is connected with control device；The milling cutter topping machanism includes mechanical arm and milling cutter；Control device is used for the detection information for receiving the transmission of overload current testing agency, and realizes excision high point action according to detection information control machinery arm and milling cutter.The utility model scraped high point by the rigidity of scraper during powdering by force, if high point is cut away by scraper, powdering action smoothly completes；If scraper by card, by the monitoring of overload current detection device and the stock removal action of milling cutter topping machanism, realizes the cutting to high point, ensure that in process be not in high point, substantially reduce part defect rate, improve element precision.
Description
Technical field
Selective laser smelting technology field is the utility model is related to, more particularly to a kind of selective laser melting unit.
Background technology
Increasing material manufacturing (Additive Manufacturing, AM) technology is that the method manufacture gradually to be added up using material is real
The technology of body part, is the manufacture method of a kind of " from bottom to top " relative to traditional material removal-Machining Technology for Cutting.Swash
Light selective melting (Selective Laser Melting, SLM) directly manufacturing technology is also known as metal 3D printing technique, is to increase material
The cutting edge technology of manufacture.Before processing, first by expert data handle software by the CAD model of part cut into slices it is discrete with
And the necessary supporting structure of addition, then plan scanning pattern, the data after processing are by comprising can control what laser beam moved
Profile information.Then this data is imported into former, computer successively calls in profile information, and control scanning galvanometer carries out inclined
Turn, realize that laser facula optionally melts metal dust, be bonded as one with previous layer material, and the area not being irradiated with a laser
Powder is in still fluffy in domain, can be recycled.Laser often melts one layer, and formation cylinder declines a thickness, and (10-50 μm can
Adjust), powder feeding cylinder rises a certain distance (being usually 1.5 times of thickness), takes away powder with scraper and completes a powdering action.
In powder after laser irradiates fusing cooling, the influence of stimulated light working process parameter, it is possible to can cause to work as
Preceding melting zone produces phenomena such as tilting or deforming so that the height after fusing is higher than the height of current bisque.It is most of at present to swash
For the powdering of light selective melting equipment all using flexible power spreading device, i.e., scraper, which is run into, allowed high point after high point, continued paving below
Powder, ensures the fluency of whole powdering process.However, flexible power spreading device there are it is inevitable the defects of, when scraper allow it is excessive
After point, this high point very likely becomes a defect source, make stomata in finished product, be mingled with, the odds such as crackle increases.In addition
The waste residue produced in process is largely taken away by circulated air, but has small part to fall on powder bed, after waste residue falls into powder bed
High point is similarly formed, flexible power spreading device can not take away the waste residue of these high points, but be pressed into powder bed, influence most
The quality of finished product afterwards.
It can be seen from the above that above-mentioned existing selective laser melting unit is upper with using in structure, method, it is clear that has still suffered from not
Just with defect, and urgently it is further improved.A kind of new selective laser melting unit how is founded, it is removed powdering
During high point influence, improve final product quality, becoming current industry pole needs improved target.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of selective laser melting unit, it is removed powdering process
The influence of middle high point, improves final product quality, so as to overcome the shortcomings of flexible power spreading device in existing selective laser melting unit.
In order to solve the above technical problems, the utility model provides a kind of selective laser melting unit, including rigid powdering dress
Put, milling cutter topping machanism and control device；
The rigidity power spreading device includes scraper mechanism, guide rail mechanism, actuating unit and overload current testing agency, described
Actuating unit drives the scraper mechanism to be moved along the guide rail of the guide rail mechanism, and the overload current testing agency is arranged on institute
State in scraper mechanism, whether be in for detecting the scraper mechanism and send to the control by card-like state, and by detection information
Device；
The milling cutter topping machanism includes mechanical arm and the milling cutter for being arranged on the mechanical arm free end, the milling cutter and machine
Tool arm is connected with the control device；
The control device, the detection information sent for receiving the overload current testing agency, and according to the inspection
Measurement information controls the mechanical arm and milling cutter to realize the action for cutting off high point.
One kind as the utility model is improved, and the scraper mechanism includes scraper and the doctor blade holder for fixed doctor,
The both ends of the doctor blade holder are respectively equipped with sliding block, and the sliding block is located in the guide rail of the guide rail mechanism, the overload current inspection
Mechanism is surveyed to be arranged on the doctor blade holder.
Further improve, the doctor blade holder uses strip fixed frame of the cross section for inverted U, and the scraper includes point of a knife
Side and knife spine side, the knife spine side of the scraper are fixed in the U-type groove of the fixed frame.
Further improve, the scraper mechanism further includes multiple fastening bolts, and the top surface of the strip fixed frame opens up
There are multiple through holes passed through for fastening bolt, the knife spine side top surface of the scraper is equipped with multiple interior correspondingly with the through hole
Threaded hole, then the fastening bolt realized by connection with the through hole and internal thread hole the scraper is fixed on it is described solid
Determine in the U-type groove of frame.
Further improve, the scraper mechanism further includes lateral pressure strip and multiple compressing members, and the lateral pressure strip is set
The lateral surface in the strip fixed frame is put, is offered on the lateral pressure strip and the fixed frame side being in contact with it
Multiple connecting holes passed through for the compressing member, then the compressing member realized by engaging with the connecting hole by the scraper
It is fixed on from side in the U-type groove of the fixed frame.
Further improve, the scraper is using the good metal material of hardness and wearability.
Further improve, the guide rail mechanism is using ring track structure.
After such design, the utility model at least has the following advantages：
The utility model selective laser melting unit relies on the rigidity of scraper by setting rigid scraper during powdering
High point was scraped by force, if high point is cut away by scraper, powdering action smoothly completes, and powdering effect is good, and bisque is uniform, protects
Card prepares the precision of part；If scraper by card, is moved by the monitoring of overload current detection device and the cutting of milling cutter topping machanism
Make, realize the cutting to high point, ensure that in process be not in high point, substantially reduce the probability that part produces defect,
Further improve final product quality.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with embodiment.
Fig. 1 is the dimensional structure diagram of the utility model selective laser melting unit；
Fig. 2 is the structural side view of the utility model selective laser melting unit；
Fig. 3 is the dimensional structure diagram of scraper mechanism in the utility model；
Fig. 4 is the length direction side view of scraper mechanism in the utility model；
Fig. 5 is the width side view of scraper mechanism in the utility model；
Fig. 6 is the sectional view of line A-A in Fig. 4；
Fig. 7 is the sectional view of line B-B in Fig. 4.
Embodiment
Referring to the drawings shown in 1 and 2, the utility model selective laser melting unit includes rigid power spreading device, milling cutter cutting
Device and control device.The rigidity power spreading device and milling cutter topping machanism are arranged at the processing cabin of the selective laser melting unit
In room 1.
The rigidity power spreading device includes scraper mechanism 4, guide rail mechanism 6, actuating unit and overload current testing agency 46.Should
Scraper mechanism 4 is used for realization the rigid powdering action of the selective laser melting unit.The guide rail mechanism 6 can use existing any
Guide rail structure, uses ring track structure in the present embodiment.The actuating unit drives the scraper mechanism 4 along the guide rail mechanism 6
Guide rail moves, and realizes that scraper acts the rigid powdering that layer surface is melted on substrate 5.
Referring to the drawings shown in 3 to 7, which includes scraper 47 and the doctor blade holder 41 for fixed doctor 47.Due to
Scraper will realize the excision to high point, so the scraper 47 is prepared using the good metal material of hardness and wearability, it is resistance to strengthen its
The property used.The both ends of the doctor blade holder 41 are respectively equipped with sliding block 42, which is located in the guide rail of the guide rail mechanism 6.
The doctor blade holder 41 uses strip fixed frame of the cross section for inverted U in the present embodiment, which includes point of a knife
Side and knife spine side, the knife spine side of the scraper 47 are fixed in the U-type groove of the fixed frame.
In order to realize the strong bonded of scraper and doctor blade holder, which further includes multiple fastening bolts 44, the strip
The top surface of shape fixed frame offers multiple through holes passed through for fastening bolt 44, the knife spine side top surface of the scraper 47 be equipped with it is multiple with
The one-to-one internal thread hole of the through hole, then the fastening bolt 44 realized by connection with the through hole and internal thread hole and scrape this
Knife 47 is fixed in the U-type groove of the fixed frame 41.
Further, which further includes lateral a pressure strip 43 and multiple compressing members 45.The lateral pressure strip 43
A lateral surface of the strip fixed frame is arranged on, is offered on the lateral pressure strip 43 and the fixed frame side being in contact with it
Multiple connecting holes passed through for the compressing member 45, then the compressing member 45 by engaging with the connecting hole realize by the scraper 47 from
Side is fixed in the U-type groove of the fixed frame 41.
Overload current testing agency 46 is arranged on the doctor blade holder 41 in the present embodiment, is for detecting the scraper mechanism 4
No be in is sent to the control device by card-like state, and by detection information, and phase is performed by control device control milling cutter topping machanism
It should act.
The milling cutter topping machanism 46 includes mechanical arm 2 and the milling cutter 3 for being arranged on 2 free end of mechanical arm, the milling cutter 3 and machine
Tool arm 2 is connected with the control device.
The control device, believes for receiving the detection information of the overload current testing agency 46 transmission, and according to the detection
Breath controls the mechanical arm 2 and milling cutter 3 to realize the action of excision high point.
The operation principle of the utility model selective laser melting unit is：In selective laser, the powdering of melting unit is processed
Cheng Zhong, if rigid scraper 47 runs into high point, scraped high point by the rigidity of scraper 47, if high point is scraped at this time by force
Knife " is cut away ", then powdering action smoothly completes, and is not in the point higher than bisque, guarantee prepares the precision of part；If scrape at this time
The rigidity deficiency of knife 47, causes swaging clamp phenomenon occur, immediate current occurs in the overload current detection device 46 on doctor blade holder 41 at this time
Increase, overload current protective device 46 start, and scraper 47 is retreated to starting point, while send signal to control device, by controlling
3 automatic identification high point of device control machinery arm 2 and milling cutter, high point milling cutter 3 is machined away, mechanical arm 2 and milling cutter 3 are received afterwards
Return, scraper mechanism works on.
The utility model selective laser melting unit is by setting rigid power spreading device, milling cutter topping machanism and control to fill
Put, can realize that 1) powdering effect is good, bisque is uniform, and the dimensional accuracy of part is high；2) be not in high point in process, part
The probability for producing defect substantially reduces；3) residue produced in process can be struck off, further reduces defect probability, is improved
Final product quality；4) overall stability of powdering is high.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
Fall within the protection scope of the present utility model.
Claims (7)
1. a kind of selective laser melting unit, it is characterised in that including rigid power spreading device, milling cutter topping machanism and control dress
Put；
The rigidity power spreading device includes scraper mechanism, guide rail mechanism, actuating unit and overload current testing agency, the power
Mechanism drives the scraper mechanism to be moved along the guide rail of the guide rail mechanism, and the overload current testing agency is arranged on described scrape
On cutter mechanism, whether it is in for detecting the scraper mechanism and sends to the control device by card-like state, and by detection information；
The milling cutter topping machanism includes mechanical arm and the milling cutter for being arranged on the mechanical arm free end, the milling cutter and mechanical arm
It is connected with the control device；
The control device, the detection information sent for receiving the overload current testing agency, and believed according to the detection
Breath controls the mechanical arm and milling cutter to realize the action for cutting off high point.
2. selective laser melting unit according to claim 1, it is characterised in that the scraper mechanism includes scraper and use
In the doctor blade holder of fixed doctor, the both ends of the doctor blade holder are respectively equipped with sliding block, and the sliding block is located at leading for the guide rail mechanism
In rail, the overload current testing agency is arranged on the doctor blade holder.
3. selective laser melting unit according to claim 2, it is characterised in that the doctor blade holder uses cross section to fall
U-shaped strip fixed frame, the scraper include point of a knife side and knife spine side, and the knife spine side of the scraper is fixed on the fixed frame
U-type groove in.
4. selective laser melting unit according to claim 3, it is characterised in that the scraper mechanism further includes multiple tight
Fixing bolt, the top surface of the strip fixed frame offer multiple through holes passed through for fastening bolt, the knife spine side of the scraper
Top surface be equipped with it is multiple with the one-to-one internal thread hole of the through hole, then the fastening bolt by with the through hole and internal thread
The connection in hole, which is realized, to be fixed on the scraper in the U-type groove of the fixed frame.
5. selective laser melting unit according to claim 3, it is characterised in that the scraper mechanism further includes lateral pressure
Tight plate and multiple compressing members, the lateral pressure strip are arranged on a lateral surface of the strip fixed frame, the lateral compression
Multiple connecting holes passed through for the compressing member are offered on plate and the fixed frame side being in contact with it, then the compressing member leads to
The engaging realization with the connecting hole is crossed to be fixed on the scraper in the U-type groove of the fixed frame from side.
6. selective laser melting unit according to claim 1, it is characterised in that the scraper uses hardness and wearability
Good metal material.
7. selective laser melting unit according to claim 1, it is characterised in that the guide rail mechanism is using circular rails
Road structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401220.0U CN207358166U (en) | 2017-10-27 | 2017-10-27 | A kind of selective laser melting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401220.0U CN207358166U (en) | 2017-10-27 | 2017-10-27 | A kind of selective laser melting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207358166U true CN207358166U (en) | 2018-05-15 |
Family
ID=62420343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721401220.0U Active CN207358166U (en) | 2017-10-27 | 2017-10-27 | A kind of selective laser melting unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207358166U (en) |
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2017
- 2017-10-27 CN CN201721401220.0U patent/CN207358166U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231101 Address after: 1108, Unit 1, 11th Floor, Building 1, No. 1 Courtyard, Energy East Road, Changping District, Beijing 102200 Patentee after: Beijing Xinjinghe Additive Manufacturing Technology Co.,Ltd. Address before: 101, 204, 205, Building 5, No. 97 Changping Road, Shahe Town, Changping District, Beijing, 100000 Patentee before: XINJINGHE LASER TECHNOLOGY DEVELOPMENT (BEIJING) Co.,Ltd. |