CN106623896A - Powder injection pile head for laser welding for metal glasses, and machining process thereof - Google Patents
Powder injection pile head for laser welding for metal glasses, and machining process thereof Download PDFInfo
- Publication number
- CN106623896A CN106623896A CN201611163979.XA CN201611163979A CN106623896A CN 106623896 A CN106623896 A CN 106623896A CN 201611163979 A CN201611163979 A CN 201611163979A CN 106623896 A CN106623896 A CN 106623896A
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- Prior art keywords
- pile crown
- powder injection
- laser welding
- powder
- metal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
- B22F3/101—Changing atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C5/00—Constructions of non-optical parts
- G02C5/14—Side-members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the technical field of glasses machining, and discloses a powder injection pile head for laser welding for metal glasses. The pile head is obtained through powder injection molding, and comprises a double-thread at one end and a leg head at the other end, wherein the double-thread is connected with a glasses leg through matching between a single-thread and the double-thread, the leg head is used for connecting a glasses frame, an enframing groove is formed in the leg head, and the thickness of the leg head at the enframing groove is the value of the lowest point of the triangular surface or the circular back surface of a frame line; and the included angle between the enframing groove and the frame line is 90 degrees, and the included angle between the two surfaces of the enframing groove is 104 degrees. The invention further discloses a machining process for the powder injection pile head. The machining process comprises the five steps of granulation, injection molding, degreasing, sintering and tapping, and in particular, the outer surface of a blank is properly bulged during design for the parts of the pile head. The pile head disclosed by the invention is molded through powder injection, and applicable to large-batch standardized production and mechanical ball-milling polishing, and thus the automation and intelligence degrees of metal glasses manufacturing are increased.
Description
Technical field
The present invention relates to belong to glasses manufacture field, it is related to the powder injection pile crown and its processing work of a kind of Metal Eyeglasses
Skill.
Background technology
Metal Eyeglasses include the parts such as picture frame, pile crown, central sill, mirror pin, traditional Metal Eyeglasses production technology：Each part is adopted
Shaping is machined into, then through processing through hand polish and cutting, accords with the parts such as picture frame, pile crown, central sill, mirror pin
Size and surface requirements are closed, then work welding again, a procedure of pad one, using silver soldering wire bonding, solder joint is big, artificial behaviour
Make, structural instability (afterwards road assembling, shaping are difficult), consumptive material is more, and fraction defective is high；Solder joint is big Jing after high-frequency welding, and weld holder is needed
Manually polishing；Welding structure is unstable, and manually polishes, and mirror holder is yielding, and mirror holder need to be carried out more during assembling
Complicated trimming, to reach requirement.Therefore, traditional Metal Eyeglasses production technology：Multiple operation is manually operated, and quality is unstable,
As artificial and material cost rises steadily, manufacturing enterprise's profit margin declines.With the popularization and popularization of laser welding technology,
Now, people start to weld frame using laser welding mode.But the pile crown chi that conventional ones shaping makes
Very little precision is low, is unsuitable for automatic laser welding, and hardness is low, easily damages, artificial to repair and polish trouble, difficult quality
Control.
Metal powder injection molded (Metal Injection Molding, MIM) is by metal dust and its binding agent
Plasticising compound is injected in the manufacturing process in model.It is on the basis of conventional powder metallurgy, creatively to combine
The injection molding technology of plastics industry and an emerging forming technique growing up.It is sufficiently complex that MIM can produce shape
Part, can to greatest extent be obtained the part of net shape and need not subsequently machine or need to only use minimal amount of machining, fit
Close and produce in enormous quantities, production efficiency is high.Powder injection forming stainless steel has good corrosion resistance, is widely used in machinery, changes
The industries such as work, ship, automobile, instrument and meter.
The content of the invention
In order to improve Metal Eyeglasses production automation level, improve production efficiency, the invention provides a kind of be used for metal
The powder injection pile crown of glasses laser welding and its processing technology, this pile crown dimensional accuracy is high, and hardness is high, is unlikely to deform, and fits
In Metal Eyeglasses laser welding.
The present invention is realized by following technical proposals.A kind of powder injection stake for Metal Eyeglasses laser welding
Head, it is characterised in that：The pile crown is obtained using powder injection-molded, and the pile crown includes double teeth of one end and the pin of the other end
Head, double teeth are connected mirror pin by single double teeth, and the pin head is used to connect picture frame, and the pin head is provided with frame groove, with frame groove
The pin head thickness at place takes the minimum point value of the triangular facet of wire or the circle back side；Angle with frame groove and wire is 90 °, with frame groove two
The angle in individual face is 104 °.
Specifically, the end face of the pin head opens gradient, and gradient is 3 °；The radian of the pin head and lens radian one
Cause；The end face of the pin head arranges the radian with picture frame collocation.
Specifically, with depth A=1.10mm of frame groove, the width B=0.72mm with frame groove, with the pin head thickness at frame groove
C=0.90mm.
Specifically, end face of the pile crown in double tooth sides is vertical with double tooth tangent lines, the width >=2.80mm of the pile crown, and pile crown is most
Thickness >=the 1.40mm at thin place, the thickness of pile crown can not be less than the 1/2 of pile crown width.
Specifically, each tooth thickness >=1.00mm of double teeth, double tooth spacing >=0.90mm.
A kind of powder injection pile crown processing technology for Metal Eyeglasses laser welding, it is characterised in that step is as follows：
(1) pelletize, metal dust is blended with binding agent by banbury, become the pellet with rheological characteristic；
(2) injection moulding, will form blank, pile crown Element Design in pellet mold cavity of the injection with pile crown shape
When, the outer surface of blank is suitably raised；
(3) degreasing, removes the portion of binder in blank；
(4) sinter, remove binding agent, and make metal dust that solid phase reaction to occur, obtain pile crown semi-finished product；
(5) tapping, the double tooth tappings to pile crown, obtains finished product
Further preferably, the metal dust is 316L or 310N powder of stainless steel, and the binding agent is mixed by following components
Conjunction is formed：Palm wax 12%, microwax 12%, stearic acid 1.5%, polyethylene 8.5%, polypropylene 15%, polyethylene glycol
2%th, vinyl acetate 1%, surplus is paraffin.
Further preferably, 316L or 310N powder of stainless steel addition tungsten powder, the quality of tungsten powder is 316L or 310N stainless steels
The 1% of powder quality.Addition tungsten powder, can greatly improve the hardness and wearability of pile crown.
Further preferably, sintering process is sintered using atmosphere technique sintering, the atmosphere technique is carried out in vacuum sintering furnace
It is divided into negative pressure degreasing, the interior burning of vacuum and forces cooling three phases；The technological parameter in negative pressure degreasing stage is：Vacuum-sintering
Vacuum values are 2.8 × 10 in stove3～2.8 × 103Pa, is passed through the nitrogen that flow is 25～35L/h, with the intensification of 2～6 DEG C/min
Ramp is incubated 90～120min to 1100～1150 DEG C；The technological parameter in burning stage is in vacuum：It is true in vacuum sintering furnace
Null value is 2.2～3.8Pa, is passed through the argon gas that flow is 15～19L/h, 1370 are warming up to 5～10 DEG C/min heating rates～
1440 DEG C, it is incubated 120～240min；Force cooling stage technological parameter be：The argon gas that flow is 15～19L/h is passed through, with 3
The rate of temperature fall of～5 DEG C/min is cooled to room temperature；Prepared pile crown.
The pile crown of the present invention is suitable to high-volume standardized production using powder injection-molded, contributes to reducing Metal Eyeglasses
Production cost, gained pile crown is suitable to the polishing of mechanization ball milling, and product is considerably inhibited, can be with Metal Eyeglasses laser welding
Continous way is produced, and improves the automation and intelligentification degree of Metal Eyeglasses manufacture.
Description of the drawings
Fig. 1 is the front view of pile crown.
Fig. 2 is A-A profiles.
Fig. 3 is the top view of pile crown.
Fig. 4 is K direction views.
Fig. 5 is F direction views.
Fig. 6 is pile crown part blank embossed design schematic diagram.
Specific embodiment
The present invention is further illustrated for the ease of understanding with preferred embodiment below in conjunction with the accompanying drawings.In the present invention, if not
Special instruction, long measure is mm.
A kind of powder injection pile crown for Metal Eyeglasses laser welding, the pile crown is obtained using powder injection-molded.
With reference to Fig. 1,2,3, the pile crown includes double teeth of one end and the pin head of the other end, and double teeth are connected mirror pin by singly pair teeth,
Each tooth thickness >=1.00 (± 0.01) of double teeth, double tooth spacing >=0.90 (± 0.02), in order that single double teeth coordinate, single pressure
Size accordingly increases as pile crown width increases.The external diameter of double teeth be 3.0 (± 0.05), pile crown double tooth sides end face with it is double
Tooth tangent line is vertical.It is 0.15 (± 0.03) that single double teeth coordinate the gap that spiral shell cuts position；Width >=2.80 of the pile crown, pile crown is most thin
Thickness >=1.40 at place, the thickness of pile crown can not be less than the 1/2 of pile crown width, otherwise affect intensity, width >=2.80 of pile crown
Requirement of the Laser Welding contact to pile crown could be met, it is too small, it is impossible to carry out laser welding.The pin head is used to connect picture frame, institute
State pin head to be provided with frame groove, be to meet laser welding, depth A=1.10 with frame groove, the width B=0.72 with frame groove, with frame
Pin head thickness C=0.90 at groove, with the pin head thickness at frame groove the minimum point value of triangular facet or the circle back side of wire is taken.With frame
Groove is 90 ° (+1 °) with the angle of wire, and the angle with two faces of frame groove is 104 °, and using such design, it is applicable to appoint
The eyeglass of what camber.With reference to Fig. 3 and Fig. 4, the end face of the pin head opens gradient, and gradient is 3 °.As shown in figure 4, the pin
The radian of head is consistent with lens radian, such as R104.6, as shown in figure 5, the end face of the pin head arranges the arc with picture frame collocation
Degree, such as R61.0.
The manufacture craft of above-mentioned pile crown part is described in detail below.
A kind of powder injection pile crown processing technology for Metal Eyeglasses laser welding, step is as follows：
(1) pelletize, metal dust is blended with binding agent by banbury, become the pellet with rheological characteristic；Institute
It is 316L or 310N powder of stainless steel to state metal dust, and the binding agent is mixed by following components：Palm wax 12%, crystallite
Wax 12%, stearic acid 1.5%, polyethylene 8.5%, polypropylene 15%, polyethylene glycol 2%, vinyl acetate 1%, surplus
It is paraffin.316L or 310N powder of stainless steel adds tungsten powder, and the quality of tungsten powder is 316L or 310N powder of stainless steel quality
1%.Addition tungsten powder, can greatly improve the hardness and wearability of pile crown.
(2) injection moulding, will form blank, pile crown Element Design in pellet mold cavity of the injection with pile crown shape
When, the outer surface of blank is suitably raised.With reference to Fig. 6, because there is contraction in process in powder injection part, for
The part of pure-surface can produce local dent, and the later stage polishing for making is not disposable, affects attractive in appearance.Part is caused in order to avoid shrinking
Depression in the surface, outer surface is suitably raised when pile crown part blank is designed.It is, during design of mould cavity, correspondence stake
The plan-position depression of head so that powder injection-molded to obtain blank convex outer surfaces.Such as raised radian is R30.
(3) degreasing, removes the portion of binder in blank；30-60min degreasings can be toasted at 80-110 DEG C.
(4) sinter, remove binding agent, and make metal dust that solid phase reaction to occur, obtain pile crown.Sintering process adopts vacuum
Atmosphere technique sintering is carried out in sintering furnace, the atmosphere technique sintering is divided into negative pressure degreasing, the interior burning of vacuum and forces cooling
Three phases；The technological parameter in negative pressure degreasing stage is：Vacuum values are 2.8 × 10 in vacuum sintering furnace3～2.8 × 103Pa, leads to
Inbound traffics are the nitrogen of 25～35L/h, and with the heating rate of 2～6 DEG C/min 1100～1150 DEG C are warming up to, insulation 90～
120min；The technological parameter in burning stage is in vacuum：Vacuum values are 2.2～3.8Pa in vacuum sintering furnace, be passed through flow for 15～
The argon gas of 19L/h, with 5～10 DEG C/min heating rates 1370～1440 DEG C are warming up to, and are incubated 120～240min；Force cooling
The technological parameter in stage is：The argon gas that flow is 15～19L/h is passed through, room temperature is cooled to the rate of temperature fall of 3～5 DEG C/min；
Prepared pile crown semi-finished product.
(5) tapping, the double tooth tappings to pile crown, obtains finished product.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
In form and in details various changes are made to it, without departing from claims of the present invention limited range.
Claims (9)
1. a kind of powder injection pile crown for Metal Eyeglasses laser welding, it is characterised in that：The pile crown adopts powder injection
Shaping is obtained, double teeth of the pile crown including one end and the pin head of the other end, and double teeth are connected mirror pin by singly pair teeth, described
Pin head is used to connect picture frame, and the pin head is provided with frame groove, and with the pin head thickness at frame groove triangular facet or the circle back side of wire are taken
Minimum point value；Angle with frame groove and wire is 90 °, and the angle with two faces of frame groove is 104 °.
2. a kind of powder injection pile crown for Metal Eyeglasses laser welding according to claim 1, it is characterised in that：Institute
The end face for stating pin head opens gradient, and gradient is 3 °；The radian of the pin head is consistent with lens radian；The end face of the pin head sets
Put the radian with picture frame collocation.
3. a kind of powder injection pile crown for Metal Eyeglasses laser welding according to claim 1, it is characterised in that：Match somebody with somebody
Depth A=1.10mm of frame groove, the width B=0.72mm with frame groove, with the pin head thickness C=0.90mm at frame groove.
4. a kind of powder injection pile crown for Metal Eyeglasses laser welding according to claim 1, it is characterised in that：Stake
End face of the head in double tooth sides is vertical with double tooth tangent lines, the width >=2.80mm of the pile crown, and the thickness of pile crown thinnest part >=
1.40mm, the thickness of pile crown can not be less than the 1/2 of pile crown width.
5. a kind of powder injection pile crown for Metal Eyeglasses laser welding according to claim 1, it is characterised in that：It is double
Each tooth thickness >=1.00mm of tooth, double tooth spacing >=0.90mm.
6. the processing of the powder injection pile crown for Metal Eyeglasses laser welding described in a kind of claim 1 to 5 any one
Technique, it is characterised in that step is as follows：
(1) pelletize, metal dust is blended with binding agent by banbury, become the pellet with rheological characteristic；
(2) injection moulding, will form blank in pellet mold cavity of the injection with pile crown shape, during pile crown Element Design,
The outer surface of blank is suitably raised；
(3) degreasing, removes the portion of binder in blank；
(4) sinter, remove binding agent, and make metal dust that solid phase reaction to occur, obtain pile crown semi-finished product；
(5) tapping, the double tooth tappings to pile crown, obtains finished product.
7. the processing technology of the powder injection pile crown of Metal Eyeglasses laser welding is used for as claimed in claim 6, and its feature exists
In：The metal dust is 316L or 310N powder of stainless steel, and the binding agent is mixed by following components：Palm wax
12%th, microwax 12%, stearic acid 1.5%, polyethylene 8.5%, polypropylene 15%, polyethylene glycol 2%, vinyl acetate
1%th, surplus is paraffin.
8. the processing technology of the powder injection pile crown of Metal Eyeglasses laser welding is used for as claimed in claim 7, and its feature exists
In：316L or 310N powder of stainless steel adds tungsten powder, and the quality of tungsten powder is the 1% of 316L or 310N powder of stainless steel quality.Add
Plus tungsten powder, the hardness and wearability of pile crown can be greatly improved.
9. the processing technology of the powder injection pile crown of Metal Eyeglasses laser welding is used for as claimed in claim 7, and its feature exists
In：Sintering process using carrying out atmosphere technique sintering in vacuum sintering furnace, the atmosphere technique sintering be divided into negative pressure degreasing,
Cooling three phases are burnt and forced in vacuum；The technological parameter in negative pressure degreasing stage is：In vacuum sintering furnace vacuum values be 2.8 ×
103～2.8 × 103Pa, is passed through the nitrogen that flow is 25～35L/h, 1100 are warming up to the heating rate of 2～6 DEG C/min～
1150 DEG C, it is incubated 90～120min；The technological parameter in burning stage is in vacuum：In vacuum sintering furnace vacuum values be 2.2～
3.8Pa, is passed through the argon gas that flow is 15～19L/h, is warming up to 1370～1440 DEG C with 5～10 DEG C/min heating rates, insulation
120～240min；Force cooling stage technological parameter be：The argon gas that flow is 15～19L/h is passed through, with 3～5 DEG C/min's
Rate of temperature fall is cooled to room temperature；Prepared pile crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163979.XA CN106623896A (en) | 2016-12-15 | 2016-12-15 | Powder injection pile head for laser welding for metal glasses, and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163979.XA CN106623896A (en) | 2016-12-15 | 2016-12-15 | Powder injection pile head for laser welding for metal glasses, and machining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106623896A true CN106623896A (en) | 2017-05-10 |
Family
ID=58822339
Family Applications (1)
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| CN201611163979.XA Pending CN106623896A (en) | 2016-12-15 | 2016-12-15 | Powder injection pile head for laser welding for metal glasses, and machining process thereof |
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Citations (9)
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|---|---|---|---|---|
| CN1259066A (en) * | 1997-06-03 | 2000-07-05 | 奥比·奥马特和鲍姆加特纳两合公司 | Method for producing an elongated single-piece structural part for spectacles |
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| CN1259066A (en) * | 1997-06-03 | 2000-07-05 | 奥比·奥马特和鲍姆加特纳两合公司 | Method for producing an elongated single-piece structural part for spectacles |
| JP2008045157A (en) * | 2006-08-11 | 2008-02-28 | Horikawa Inc | Spectacles component made of ultrahigh-tensile aluminum powder alloy and method for producing the same |
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