CN107470617A - The screw rotor shaped device of pitches - Google Patents
The screw rotor shaped device of pitches Download PDFInfo
- Publication number
- CN107470617A CN107470617A CN201710827975.5A CN201710827975A CN107470617A CN 107470617 A CN107470617 A CN 107470617A CN 201710827975 A CN201710827975 A CN 201710827975A CN 107470617 A CN107470617 A CN 107470617A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- shaped device
- screw
- screw rotor
- die cavity
- 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.)
- Granted
Links
Classifications
-
- 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
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
- B22F5/085—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs with helical contours
Abstract
The invention discloses a kind of screw rotor shaped device of pitches, including casing, the screw rod shaping mould for being arranged in the casing and there is screw rod die cavity, for the push rod to be pressurizeed to the metal dust in the die cavity and the guide sleeve for being oriented to the push rod, the shaped device of the present invention can ensure that screw rotor has good precision, and convenient follow-up finishing, also there is preferable processing efficiency simultaneously, conveniently realize the batch production of screw rotor.
Description
Technical field
The present invention relates to the manufacturing equipment field of Changeable Lead screw rotor, the screw rotor shaping of specifically a kind of pitches
Device.
Background technology
As a kind of typical displacement machine, screw rod mechanism (including helical-lobe compressor, screw rod multiphase pump, screw vacuum
Pump, screw expander etc.) rotated by intermeshing screw rotor to produce volume change, so as to realize fluid medium
The functions such as compression, conveying, extraction and expansion, are widely used in the industrial circles such as the energy, chemical industry, refrigeration.
As screw rod mechanism develops towards efficient, accurate direction, there is a collection of new high performance screws machinery.Example
Such as varying pitch (helical pitch) screw vacuum pump, this kind of vavuum pump can be effectively reduced compared to the screw vacuum pump of constant lead
Pump cavity temperature, reduce leakage；Varying pitch (helical pitch) helical-lobe compressor can reach discharge pressure quickly, will in same design
It can shorten compression process under asking, while reduce leakage rate, improve volumetric efficiency.
But this kind of varying pitch (helical pitch) screw rod mechanism faces a problem always, that is, the processing of screw rotor.It is logical
Often in the case of, when screw rotor helical pitch is fixed constant, the processing of screw rotor can be realized using shaping operation method, such as into
Type milling, form grinding.When the helical pitch of screw rotor is axially varying, shaping operation method is just difficult to.
Therefore, be solve problem above, it is necessary to which a kind of Changeable Lead screw rotor former, the equipment can ensure screw rod
Rotor has good precision, and convenient follow-up finishing, while also has preferable processing efficiency, conveniently realizes screw rotor
Batch production.
The content of the invention
In view of this, the purpose of the present invention is the defects of overcoming in the prior art, there is provided a kind of Changeable Lead screw rotor into
Type equipment, the equipment can ensure that screw rotor has good precision, and convenient follow-up finishing, while also have preferable
Processing efficiency, conveniently realize the batch production of screw rotor.
The screw rotor shaped device of the pitches of the present invention, including casing, be arranged in the casing and there is screw rod
The screw rod shaping mould of die cavity, for the push rod that is pressurizeed to the metal dust in the die cavity and for the push rod
The guide sleeve being oriented to；
Further, the screw rod shaping mould includes multiple shaping mold segments being laminated vertically, and each mold segment that is molded is by multiple
Module is spliced to form；
Further, each the module number of shaping mold segment is equal with the number of teeth of screw rod die cavity；
Further, the binding site of two circumferentially adjacent modules is located at the tooth top of screw rod die cavity；
Further, the outer wall of the screw rod shaping mould is axially formed guide rail, and the casing inner wall is formed and the guide rail
The guide groove of cooperation；
Further, the casing includes at least two half-shells that can be interfixed；
Further, described guide sleeve one end is formed is connected boss with the screw rod shaping mould end surface shape identical；
Further, the section of the push rod and the section of guide sleeve endoporus are identical with the end face of the screw rod die cavity.
The beneficial effects of the invention are as follows：The screw rotor shaped device of the pitches of the present invention is in shaping screw, metal
Powder (using powder metallurgy) or molten metal (using compression casting) can be filled in the forming cavity in screw rod shaping mould, utilized
Push rod pressurizes to metal dust or molten metal, finally realizes the shaping of screw rod, and the screw rod shaping mould in the present apparatus is spells
Binding structure, it can carry out block design according to screw rotor geometric properties, overcome shaping operation method can not process varying pitch spiral shell
The problem of bar rotor, while suitable for casting processing method and powder metallurgy processing method, relative to conventional die cavity, the one
The die cavity dismounting splicing of change combined type is convenient, topology layout is compact, and can preferably ensure machining accuracy, and the present invention is due to use
Dismountable guide tracked Combination Design, high efficiency, the mass processing of varying pitch (helical pitch) screw rotor can be realized, is also beneficial to
Promote the automation of the full process of special spiral rod rotor.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural representation of the Changeable Lead screw rotor shaped using building mortion of the present invention；
Fig. 2 is the structural formula schematic diagram of the shaping mold segment of the present invention；
Fig. 3 is the axonometric drawing of the screw rod shaping mould of the present invention；
Fig. 4 is the explosive view of the present invention.
Embodiment
Fig. 1 is the structural representation of the Changeable Lead screw rotor of the present invention；Fig. 2 is cuing open for the screw rod shaping mould 7 of the present invention
View；Fig. 3 is the axonometric drawing of the screw rod shaping mould 7 of the present invention；Fig. 4 is the explosive view of the present invention.The pitches of the present embodiment
Screw rotor shaped device includes casing 9, is arranged in the casing 9 and the screw rod shaping mould 7 with screw rod die cavity, for pair
The push rod 5 and the guide sleeve 6 for being oriented to the push rod 5 that metal dust in the die cavity is pressurizeed；This
The screw rotor shaped device of the pitches of invention is in shaping screw, metal dust (using powder metallurgy) or molten metal
(using compression casting) can be filled in the forming cavity 3 in screw rod shaping mould 7, and screw rod shaping mould 7 is inner spacing simultaneously by pallet 8
Sealing, is pressurizeed using push rod 5 to metal dust or molten metal, finally realizes the shaping of screw rod, the screw rod in the present apparatus
Shaping mould 7 is splicing construction, and it can carry out block design according to screw rotor geometric properties, overcome shaping operation method not add
The problem of work varying pitch screw rotor, while suitable for casting processing method and powder metallurgy processing method, relative to conventional
Die cavity, integral combination type die cavity dismounting splicing is convenient, topology layout is compact, and can preferably ensure machining accuracy, this
Invention can realize high efficiency, the mass of varying pitch (helical pitch) screw rotor due to using dismountable formula Combination Design of guide rail 1
Processing, it is also beneficial to promote the automation of the full process of special spiral rod rotor.
In the present embodiment, the screw rod shaping mould 7 includes multiple shaping mold segments 4 being laminated vertically, each shaping mold segment 4
For tubular construction, each mold segment 4 that is molded is spliced to form by multiple circumferentially distributed modules 2；This detachable shaping mould
It can be divided according to the lead change feature and the number of teeth of screw rotor, it is in the present embodiment and then special according to the change of helical pitch
Sign is divided into four to five sections vertically, to ensure precision to greatest extent.
In the present embodiment, the quantity of module 2 of each shaping mold segment 4 is equal with the number of teeth of screw rod die cavity, to ensure screw rod
Formed precision, while be easy to be stripped after the completion of shaping.
In the present embodiment, the binding site of two circumferentially adjacent modules 2 is located at the tooth top of screw rod die cavity, this structure
So that by the micro gap being spliced to form or flash etc. mainly along screw rotor tooth top point on the blank (cast member) processed
Cloth, facilitate following process, can preferably ensure screw rod tip clearance and the design requirement of inter-lobe clearance.
In the present embodiment, the outer wall of the screw rod shaping mould 7 is axially formed guide rail 1, and the inwall of casing 9 is formed and institute
State the guide groove of the cooperation of guide rail 1；Wherein, at least one guide rail 1 is equipped with each module 2, per the guide rail 1 of formable layer mold segment 4
It is circumferentially aligned to be allowed to form complete long guideway 1, enable screw rod shaping mould 7 and the inner chamber of casing 9 good fit, it is convenient by spiral shell
Bar shaping mould 7 takes out.
In the present embodiment, the casing 9 includes at least two half-shells that can be interfixed, and two half-shells pass through chute phase interworking
Close, this split type casing 9 can conveniently manufacture the taking-up of exemplar.
In the present embodiment, the one end of guide sleeve 6 formation is connected convex with the end surface shape identical of screw rod shaping mould 7
Platform, to realize that guide sleeve 6 section also can extend into casing 9, make whole device integrated.
In the present embodiment, the end face phase of the section of the push rod 5 and the section of the endoporus of guide sleeve 6 with the screw rod die cavity
Together, ensure that push rod 5 can be fitted close with the endoporus of guide sleeve 6, while the push rod 5 is to metal dust when pressurizeing, also can be with
Screw rod die cavity is fitted close, and avoids metal dust or molten metal from leaking.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (8)
- A kind of 1. screw rotor shaped device of pitches, it is characterised in that：Including casing, it is arranged in the casing and has The screw rod shaping mould of screw rod die cavity, for the push rod that is pressurizeed to the metal dust in the die cavity and for being pushed away to described The guide sleeve that bar is oriented to.
- 2. the screw rotor shaped device of pitches according to claim 1, it is characterised in that：The screw rod shaping mould bag Multiple shaping mold segments being laminated vertically are included, each mold segment that is molded is spliced to form by multiple modules.
- 3. the screw rotor shaped device of pitches according to claim 2, it is characterised in that：The mould of each shaping mold segment Number of blocks is equal with the number of teeth of screw rod die cavity.
- 4. the screw rotor shaped device of pitches according to claim 3, it is characterised in that：Two circumferentially adjacent moulds The binding site of block is located at the tooth top of screw rod die cavity.
- 5. the screw rotor shaped device of pitches according to claim 4, it is characterised in that：The screw rod shaping mould Outer wall is axially formed guide rail, and the casing inner wall forms the guide groove coordinated with the guide rail.
- 6. the screw rotor shaped device of pitches according to claim 5, it is characterised in that：The casing is included at least Two half-shells that can be interfixed.
- 7. the screw rotor shaped device of pitches according to claim 6, it is characterised in that：Described guide sleeve one end shape Boss is connected into the screw rod shaping mould end surface shape identical.
- 8. the screw rotor shaped device of pitches according to claim 7, it is characterised in that：The section of the push rod and The section of guide sleeve endoporus is identical with the end face of the screw rod die cavity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113389 | 2017-02-28 | ||
| CN2017101133894 | 2017-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107470617A true CN107470617A (en) | 2017-12-15 |
| CN107470617B CN107470617B (en) | 2019-08-13 |
Family
ID=60584395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710827975.5A Active CN107470617B (en) | 2017-02-28 | 2017-09-14 | The screw rotor molding machine of pitches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107470617B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283146A (en) * | 2020-02-11 | 2020-06-16 | 重庆创兴热能科技有限公司 | Mold device for producing double-helix hollowed-out slag discharge screw |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0530222B1 (en) * | 1990-04-27 | 1997-01-02 | Svenska Rotor Maskiner Ab | Rotor for a rotary screw machine, a rotary screw machine and a process for manufacturing a rotor |
| CN101557894A (en) * | 2006-09-04 | 2009-10-14 | 米巴辛特奥地利股份有限公司 | Method of compacting the surface of a sintered part |
| CN102266875A (en) * | 2011-06-30 | 2011-12-07 | 宁波德艺钢管制造有限公司 | Device used for producing screw rotor |
| WO2011163077A2 (en) * | 2010-06-23 | 2011-12-29 | Entek Manufacturing, Inc. | Restoration of worn metallic extrusion processing elements |
| CN103032312A (en) * | 2012-12-17 | 2013-04-10 | 重庆大学 | Combined screw rod and forming process |
| CN104741606A (en) * | 2015-03-31 | 2015-07-01 | 龙岩市泰美耐磨合金有限公司 | Metal powder compact forming device |
| CN205732970U (en) * | 2016-05-27 | 2016-11-30 | 安徽宁磁电子科技有限公司 | A kind of compression molding device of sintered Nd-Fe-B permanent magnetic material |
-
2017
- 2017-09-14 CN CN201710827975.5A patent/CN107470617B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0530222B1 (en) * | 1990-04-27 | 1997-01-02 | Svenska Rotor Maskiner Ab | Rotor for a rotary screw machine, a rotary screw machine and a process for manufacturing a rotor |
| CN101557894A (en) * | 2006-09-04 | 2009-10-14 | 米巴辛特奥地利股份有限公司 | Method of compacting the surface of a sintered part |
| WO2011163077A2 (en) * | 2010-06-23 | 2011-12-29 | Entek Manufacturing, Inc. | Restoration of worn metallic extrusion processing elements |
| CN102266875A (en) * | 2011-06-30 | 2011-12-07 | 宁波德艺钢管制造有限公司 | Device used for producing screw rotor |
| CN103032312A (en) * | 2012-12-17 | 2013-04-10 | 重庆大学 | Combined screw rod and forming process |
| CN104741606A (en) * | 2015-03-31 | 2015-07-01 | 龙岩市泰美耐磨合金有限公司 | Metal powder compact forming device |
| CN205732970U (en) * | 2016-05-27 | 2016-11-30 | 安徽宁磁电子科技有限公司 | A kind of compression molding device of sintered Nd-Fe-B permanent magnetic material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283146A (en) * | 2020-02-11 | 2020-06-16 | 重庆创兴热能科技有限公司 | Mold device for producing double-helix hollowed-out slag discharge screw |
| CN111283146B (en) * | 2020-02-11 | 2021-05-04 | 重庆创兴热能科技有限公司 | Mold device for producing double-helix hollowed-out slag discharge screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107470617B (en) | 2019-08-13 |
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