CN103780026B - Motor rotor die casting tooling and method and inner diameter protection device - Google Patents
Motor rotor die casting tooling and method and inner diameter protection device Download PDFInfo
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- CN103780026B CN103780026B CN201410005556.XA CN201410005556A CN103780026B CN 103780026 B CN103780026 B CN 103780026B CN 201410005556 A CN201410005556 A CN 201410005556A CN 103780026 B CN103780026 B CN 103780026B
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Abstract
The invention discloses a motor rotor die casting tooling and method and an inner diameter protection device. The inner diameter protection device comprises a rigid shaft and an elastic sleeve. The elastic sleeve and the rigid shaft are coaxially arranged, and the inner surface of the elastic sleeve forms an outer surface corresponding to the rigid shaft. According to the elastic sleeve, when the rigid shaft axially moves relative to the elastic sleeve, the elastic sleeve elastically spreads out along the radial direction. The elastic sleeve is suitable for being arranged in an inner diameter hole of a rotor iron core. According to the embodiment of the invention, the inner diameter protection device has a good bulging ability; the protection performance is not affected by the fluctuation of the inner diameter of the rotor iron core; and the structure is simple and reasonable.
Description
Technical field
The present invention relates to Compressor Manufacturing field, especially relate to a kind of protection dress of the internal diameter for rotor die casting
Put, include rotor die casting frock and the rotor using rotor die casting frock of described internal diameter protection device
Method of squeeze forming.
Background technology
The existing internal diameter protection device being applied to rotor-type compressor rotor die casting, typically has two kinds of forms, and one
It is mould gate side setting fixing axle 1 ＇ (as Fig. 7), during die casting, fixing axle 1 ＇ and rotor core 200 ＇ coordinates for gap；One is mould
Axle is not set in tool, press-in protection axle 1 ＇ (as Fig. 8 a, 8b) in rotor core before die casting, this axle 1 ＇ is solid shafting or open hollow
Axle, axle and rotor core 200 ＇ internal diameter are that interference, transition or small-gap suture coordinate, and during die casting, tape spool is carried out.
Fixing axle 1 ＇ is set in die casting cast gate side, it is the disadvantage is that, for ensureing matched moulds, the demoulding smoothly and not pulling and turn
Sub- iron core internal diameter, axle 1 ＇ becomes gap to coordinate with the matching design of the internal diameter of rotor core 200 ＇, axle during rotor core 200 ＇ cold conditions
There is gap in 1 ＇ and hole, and after die casting starts, with the filling to mold cavity and rotor core grooved for the aluminium liquid, in rotor
Footpath expanded by heating, original interstice continues to increase, and because rotor core 200 ＇ has end face run-out and folded riveting is uneven in itself, adds
Huge clamping pressure suffered by iron core during die casting and injection pressure, the rotor internal diameter under unprotect state necessarily deforms.
This axle 1 ＇ is actual to act as die casting pre-determined bit axle, has no protective effect to rotor internal diameter.
Before die casting, in rotor core 200 ＇, axle 1 ＇ is protected in press-in, such as adopts solid shafting, such as Fig. 8 a, and the magnitude of interference must design
Obtain very little, otherwise all easily pull rotor internal diameter or axle when entering axle and shaft, after die casting starts, iron core is first heated, endoporus expands,
And mandrel just can need to be heated through conduction of heat, temperature rises slowly, and the diameter of axle does not synchronously increase with rotor core internal diameter, with aluminum
The carrying out of liquid filling process, the cooperation of the two is changed into gap from slight interference, thus lose becoming to rotor core 200 ＇ die casting
The protective effect of shape；And adopt open hollow axle, and such as Fig. 8 b, due to the elasticity of axle, during die casting, axle does not have good bulging
Ability, the elasticity of aluminium liquid filling process axle is far smaller than the iron core ID distortion power of die casting, hollow axle similar to using solid shafting
Also the protective effect to rotor core internal diameter can be lost.
Simultaneously as rotor core is because the difference of each batch material, mould and punching press condition, internal diameter is also change,
And the size of both the above mode die casting axle is all fixing, axle also just cannot ensure surely with the mated condition of rotor core internal diameter
Fixed.
Any of the above situation, is all not enough to the protection of rotor core endoporus during die casting.Thus, rotor core internal diameter pressure
Casting deformation is unavoidable, a series of not value-added production activity such as the internal diameter school shape of operation, outer quarter sawing footpath after the rotor also bringing
And a series of quality problem such as the deterioration of rotor dynamic balancing, increase of machine air gap amount of unbalance.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art.For this reason, one object of the present invention
It is to propose the internal diameter guarantor for rotor die casting that a kind of structure is simple and in die casting, rotor core endoporus is protected
Protection unit.
Further object is that proposing a kind of rotor die casting frock with described internal diameter protection device.
Another object of the present invention is to propose a kind of rotor die casting using described rotor die casting frock
Forming method.
A kind of internal diameter protection device for rotor die casting of embodiment according to a first aspect of the present invention, comprising: just
Property axle；And resilient sleeve, described resilient sleeve and described stiff shaft are coaxially disposed and the inner surface of described resilient sleeve is formed as and institute
State the corresponding outer surface of stiff shaft, and described resilient sleeve is configured to described stiff shaft with respect to the axial movement of described resilient sleeve
When, described resilient sleeve radially open by elasticity, described resilient sleeve is suitable to be located at the internal diameter in the hole of rotor core.
Internal diameter protection device according to embodiments of the present invention, has good bulging ability, and protective value will not be subject to rotor
Iron core internal diameter influence of fluctuations, simple and reasonable.
According to one embodiment of present invention, the outer surface of described resilient sleeve is the face of cylinder, and the external diameter of described resilient sleeve
It is constructed such that described resilient sleeve is fitted on the inwall of described inner diameter hole in original state.
According to one embodiment of present invention, the inner surface of described resilient sleeve is formed as inner conical surface, outside described stiff shaft
Surface is formed as the male cone (strobilus masculinus) with the cooperation of described inner conical surface, and the smaller diameter end of described stiff shaft is towards described resilient sleeve.
Alternatively, described resilient sleeve includes body, and the perisporium of described body axially has a plurality of first along it and slots and many
Bar second is slotted, and described first fluting and second is recessed at the circumferentially-spaced setting of staggering of described body.
Preferably, described first fluting extends to the second end of neighbouring described body from the first end of described body, described
Second fluting extends to the first end of neighbouring described body from the second end of described body.
Preferably, the distance between second end of the second end of described first fluting and described body is 2-15mm；Described
The distance between first end of the first end of the second fluting and described body is 2-15mm.
Preferably, the width of described first fluting and described second fluting is 0.5-6mm.
According to one embodiment of present invention, the inner surface of described resilient sleeve is formed as inner cylinder face, described stiff shaft
Outer surface is formed as the external cylindrical surface with the inner surface cooperation of described resilient sleeve.
According to one embodiment of present invention, described resilient sleeve is at least one in following elements: v shape resilient disc, ripple
Stricture of vagina set, disc spring film.
According to one embodiment of present invention, described internal diameter protection device further includes: pushing mechanism, described promotion machine
Structure is located at one end of described stiff shaft so that producing axial movement between described stiff shaft and described resilient sleeve.
According to one embodiment of present invention, the spring that described pushing mechanism is installed for pre-pressing, described spring is only against
On one end away from described resilient sleeve of described stiff shaft.
Alternatively, the described one end end face away from described resilient sleeve of described stiff shaft has the peace being axially concaved along it
Dress hole, described spring is located at described installation in the hole.
Preferably, described pushing mechanism also includes: plug screw, and described plug screw is positioned at described stiff shaft away from described resilient sleeve
One end on, wherein said spring is only against between described plug screw and the inwall of described installing hole.
According to one embodiment of present invention, described pushing mechanism is oil cylinder, cylinder, hydraulic cylinder or heat-resistant elastic material.
According to one embodiment of present invention, described internal diameter protection device also includes: ejection circle, and described ejection snare is located at
The outside of described stiff shaft and limit receiving space and described stiff shaft between；Back-moving spring, described back-moving spring is located at institute
State in receiving space.
Internal diameter protection device according to embodiments of the present invention, during die casting matched moulds, the outer surface of stiff shaft is interior with resilient sleeve
Surface engagement, due to thrust mechanism promotion stiff shaft axial movement, radial elastic opens resilient sleeve, by the internal diameter of rotor core
Swelling.After die casting starts, rise with aluminium liquid filling iron core temperature, rotor core internal diameter expands, and resilient sleeve pushes away in thrust mechanism
Continue in the presence of power to open and keep the swelling of iron core internal diameter, it is to avoid not enough because protecting to iron core internal diameter using fixing axle
And the rotor core die casting deformation producing, operation school shape reduce the shadow that machine air gap and rotor dynamic balancing are produced after minimizing
Ring, simple and reasonable, using reliability.
A kind of rotor die casting frock of embodiment according to a second aspect of the present invention, for pressing to rotor core
Casting, comprising: the internal diameter protection device for rotor die casting described in embodiment according to a first aspect of the present invention, wherein said
Resilient sleeve is suitable to be located at the internal diameter in the hole of described rotor core before die casting；Die casting movable type, wherein said rotor core
It is adapted to fit into before die casting in described die casting movable type；Die casting die cavity fixes neutron, and the fixing neutron of described die casting die cavity sets
Side in described die casting movable type.
According to one embodiment of present invention, described fixing axle is axially displaceably located at described die casting die cavity before die casting
On fixing neutron.
Alternatively, described die casting movable type has push rod head, described push rod head has the described resilient sleeve of restriction
The thrust surface of relative movement and described rotor core between.
According to one embodiment of present invention, described fixing axle coordinates in described resilient sleeve before die casting.
Alternatively, one end of the fixing neutron of described die casting die cavity or described die casting movable type is provided with to have and passes thrust
Pass the bullet head part of stiff shaft.
According to the rotor die casting frock of the present invention, when rotor core carries out die casting, die casting is reduced or avoided
The generation of Cheng Tiexin ID distortion.
A kind of rotor method of squeeze forming of embodiment according to a second aspect of the present invention, using according to the present invention second
Rotor die casting frock described in aspect embodiment, comprises the following steps:
S1, the resilient sleeve in described internal diameter protection device is arranged on the internal diameter in the hole of described rotor core；
S2, by described rotor core load described die casting movable type in；
S3, make described stiff shaft and described resilient sleeve produce axial movement so that described resilient sleeve radially elasticity is opened.
According to the rotor method of squeeze forming of the present invention, when rotor core carries out die casting, it is possible to reduce or avoid
The generation of press casting procedure iron core ID distortion.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein:
Fig. 1 is the operation principle that in internal diameter protection device according to an embodiment of the invention, stiff shaft is during diminished shaft
Figure；
Fig. 2 is the sectional view of internal diameter protection device according to an embodiment of the invention, and wherein stiff shaft adopts diminished shaft
And pushing mechanism is spring；
Fig. 3 is the sectional view of internal diameter protection device in accordance with another embodiment of the present invention, and wherein stiff shaft adopts taper
Axle and pushing mechanism are oil cylinder；
Fig. 4 is the sectional view of resilient sleeve in Fig. 2 and Fig. 3；
Fig. 5 is the fundamental diagram that in internal diameter protection device according to an embodiment of the invention, stiff shaft is during d-axis；
Fig. 6 is the sectional view of internal diameter protection device according to an embodiment of the invention, and wherein stiff shaft adopts d-axis, bullet
Property set adopt V-shaped resilient disc；
Fig. 7 is an embodiment of existing internal diameter protection device, wherein arranges fixing axle in mould gate side；
Fig. 8 a and Fig. 8 b is two embodiments of existing internal diameter protection device, and wherein before die casting, in rotor core, press-in is protected
Shield axle, in Fig. 8 a, protection axle is solid shafting, and in Fig. 8 b, protection axle is hollow axle.
Reference:
Internal diameter protection device 100；
Stiff shaft 1；Smaller diameter end 11；One end 12 away from resilient sleeve；Installing hole 121；
Resilient sleeve 2；Body 21；First fluting 22a；Second fluting 22b；
Pushing mechanism 3；Spring 31；Plug screw 4；Ejection circle 5；Back-moving spring 6；
Rotor core 200；Inner diameter hole 210；Die casting die cavity fixes neutron 300；
Die casting movable type 400；Push rod head 410；Thrust surface 411；
Thrust f；Resilient sleeve original outer diameter d1；Resilient sleeve opens outside diameter d 2
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " axial ", " radially ", the side of the instruction such as " circumferential "
Position or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description,
Rather than instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that
Indicate or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", "
Two " feature can be expressed or implicitly include one or more this feature.In describing the invention, unless otherwise
Illustrate, " multiple " are meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can
To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The internal diameter for rotor die casting describing embodiment according to a first aspect of the present invention below with reference to Fig. 1-Fig. 6 is protected
Protection unit 100, described internal diameter protection device 100 is for protecting to the internal diameter of rotor core 200 during motor rotor die-casting.
Internal diameter protection device 100 according to embodiments of the present invention, comprising: stiff shaft 1 and resilient sleeve 2, resilient sleeve 2 and rigidity
Axle 1 is coaxially disposed and the inner surface of resilient sleeve 2 is formed as outer surface corresponding with stiff shaft 1, and resilient sleeve 2 is configured to rigidity
When axle 1 is axially moveable with respect to resilient sleeve 2, resilient sleeve 2 radially open by elasticity, and resilient sleeve 2 is suitable to be located at rotor core 200
Inner diameter hole 210 in.
As shown in Figure 1 and Figure 5, before die casting starts, stiff shaft 1 is located at initial position s1, after die casting starts, with high temperature aluminum
Liquid starts to fill the cast aluminium slotted eye of mold cavity and rotor core 200, and rotor core 200 temperature constantly raises, rotor core 200
Internal diameter due to the effect expanded with heat and contract with cold start increase, the bulging power between the inner diameter hole 210 of rotor core 200 and resilient sleeve 2
Reduce and even disappear, stiff shaft 1 moves axially relatively (for example to the right-hand member in Fig. 1 and Fig. 5) in resilient sleeve 2, promote bullet
Property set 2 continue to open, be close to the inwall of the inner diameter hole 210 of rotor core 200, continue to keep swelling.Stiff shaft 1 relative movement
Apart from δ, it is in swelling position s2 position, s2=s1+ δ, now, the outside dimension of resilient sleeve 2 increases d2 from d1, increase
2 δ.In whole press casting procedure, the internal diameter of rotor core 200 remains swelling in the presence of stiff shaft and resilient sleeve, pressure
After casting, the internal diameter of rotor core 200 is close with punching press core dimensions, and deformation is little, and circularity and cylindricity are good.
Internal diameter protection device according to embodiments of the present invention, has good bulging ability, and protective value will not be subject to rotor
Iron core internal diameter influence of fluctuations, simple and reasonable.
As shown in Fig. 1-Fig. 3, Fig. 5-Fig. 6, the outer surface of resilient sleeve 2 is the face of cylinder, and the external diameter of resilient sleeve 2 is configured to
Resilient sleeve 2 is made to be fitted on the inwall of inner diameter hole 210 in original state.
According to one embodiment of present invention, as shown in Figure 1-Figure 3, the inner surface of resilient sleeve 2 is formed as inner conical surface, rigidity
The outer surface of axle 1 is formed as the male cone (strobilus masculinus) with inner conical surface cooperation, that is, be formed as diminished shaft.Smaller diameter end 11(of stiff shaft 1 is schemed
Right-hand member in 1- Fig. 3) towards resilient sleeve 2.
In some optional examples, as shown in figure 4, resilient sleeve 2 includes body 21, the perisporium of body 21 axially has along it
A plurality of first fluting 22a and a plurality of second fluting 22b, the first fluting 22a and the second fluting 22b are circumferentially-spaced in body 21
Stagger setting.Alternatively, the quantity of the first fluting 22a and the second fluting 22b can be identical.
Preferably, the first fluting 22a extends to the second end of adjacent body 21, the second fluting from the first end of body 21
22b extends to the first end of adjacent body 21 from the second end of body 21.Alternatively, second end of the first fluting 22a and body
The distance between 21 second end is 2-15mm；The distance between first end and first end of body 21 of second fluting 22b are
2-15mm.Additionally preferably, the width of the first fluting 22a and the second fluting 22b is 0.5-6mm.
Thus, in original state, due to the effect of the original dimension of resilient sleeve, resilient sleeve 2 becomes in rotor core 200
Open configuration, the now inwall of the inner diameter hole 210 of the outer surface of resilient sleeve 2 and rotor core 200.Inner conical surface when resilient sleeve 2
Contact with the male cone (strobilus masculinus) of stiff shaft 1, stiff shaft 1 along the two axially continue to move (for example as the right-hand member in Fig. 2 and Fig. 3) when, just
Resilient sleeve 2 can be promoted to open, the inwall of the inner diameter hole 210 of swelling rotor core 200.
Specifically, as shown in figure 1, initial position completes fixing axle 1 and resilient sleeve 2 when cast aluminium does not start for die casting matched moulds
State, i.e. position shown in dotted line.After the completion of matched moulds, fixing axle 1 is in s1 position, now, the swelling outside dimension of resilient sleeve 2
For d1.After press casting procedure rotor core internal diameter increases, fixing axle 1 continues to arrive forward s2 position with respect to resilient sleeve 2, keeps to bullet
Property set swelling, resilient sleeve 2 is opened, and then the inwall of the inner diameter hole 210 of swelling rotor core 200, and die casting is reduced or avoided
The generation of journey rotor 200 iron core ID distortion.
According to the internal diameter protection device 100 of the present invention, core is the cooperation with stiff shaft 1 and resilient sleeve 2, to rotor
Internal diameter implements the dynamic swelling of internal diameter of die casting overall process.
According to some currently preferred embodiments of the present invention, internal diameter protection device 100 further includes pushing mechanism 3, promotes machine
Structure 3 is located at one end of stiff shaft 1 so that producing axial movement between stiff shaft 1 and resilient sleeve 2.In example as shown in Figure 2, push away
The spring 31 that motivation structure 3 is installed for pre-pressing, spring 31 is only against one end away from resilient sleeve 2 of stiff shaft 1 (i.e. in Fig. 2
Left end) on.Specifically, one end 12(away from resilient sleeve 2 of stiff shaft 1 is the left end in Fig. 2) have along its axle on end face
To recessed installing hole 121, spring 31 is located in installing hole 121.Further, pushing mechanism 3 also includes plug screw 4, plug screw 4
In stiff shaft 1 away from one end 12 of resilient sleeve 2, wherein spring is only against between plug screw 4 and the inwall of installing hole 121, that is,
Plug screw 4 is supported to spring 31.Thus, when the internal diameter of rotor core 200 starts to increase due to the effect expanded with heat and contract with cold, interior
Bulging power between the inwall in footpath hole 210 and resilient sleeve 2 reduces even disappearance, and now spring 31 pushes away because its spring return acts on
The left end radial direction of dynamic stiff shaft 1 moves right, and promotes resilient sleeve 2 to continue to open.
In the above-described embodiments, the inner surface describing resilient sleeve 2 is the example that inner conical surface and fixing axle 1 are diminished shaft.
However, the present invention is not limited to this, as shown in Figure 5 and Figure 6, the inner surface of resilient sleeve 2 may be formed as inner cylinder face, rigidity
The outer surface of axle 1 is correspondingly formed as the external cylindrical surface with the inner surface cooperation of resilient sleeve 2.As shown in fig. 6, resilient sleeve 2 is v shape
Resilient disc.
Stiff shaft shown in Fig. 5 and Fig. 6 be d-axis example and the fixing axle shown in Fig. 2 be diminished shaft example work
Principle is similar to, and difference is that stiff shaft is that during d-axis, pushing mechanism 3 promotes resilient sleeve 2 mobile with respect to fixing axle 1, i.e. bullet
Property set 2 one end promoted and the other end is stopped, when thus promoting resilient sleeve 2, stiff shaft 1 will promote resilient sleeve 2 radially
Open.As shown in figure 5, initial position completes the state of pushing mechanism 3 and v shape resilient disc when cast aluminium does not start for die casting matched moulds, that is,
Position shown in dotted line.After the completion of matched moulds, pushing mechanism 3 is in s1 position, and now, the swelling outside dimension of v shape resilient disc is d1.
After press casting procedure rotor core internal diameter increases, pushing mechanism 3 continues to arrive forward s2 position, keeps the swelling to v shape resilient disc, v
Shape resilient disc opens, and then the inwall of the inner diameter hole 210 of swelling rotor core 200, and press casting procedure rotor 200 ferrum is reduced or avoided
The generation of core ID distortion.
Certainly, the invention is not restricted to this, resilient sleeve 2 can also be radiation finss, the one of which of disc spring film or combination,
And the combining of at least one of radiation finss and disc spring film and v shape resilient disc.
Preferably, the internal diameter protection device 100 according to the present invention, also includes ejection circle 5 and back-moving spring 6,5 sets of ejection circle
It is located at the outside of stiff shaft 1 and limits receiving space and stiff shaft 1 between, back-moving spring 6 is located in receiving space, such as Fig. 2
Shown.
The spring that pushing mechanism 3 above-mentioned is installed for pre-pressing, because the effect of its elastic force pushes away to stiff shaft 1
Dynamic.In another embodiment of the present invention, as shown in figure 3, pushing mechanism 3 is oil cylinder.However, the present invention is not limited to this,
Pushing mechanism 3 can also can provide axial motive force f to stiff shaft 1 for cylinder, hydraulic cylinder or heat-resistant elastic material etc. are various
Structure, here no longer describes in detail.
It is also noted that each embodiment of the shape of above-mentioned stiff shaft, resilient sleeve and pushing mechanism etc. is permissible
It is used in combination with each other, and the embodiment provide for the purpose of example in present specification is provided, these fall within
Within protection scope of the present invention.
Internal diameter protection device 100 according to embodiments of the present invention, during die casting matched moulds, the outer surface of stiff shaft 1 and resilient sleeve 2
Inner surface cooperation, resilient sleeve 2 promotes stiff shaft 1 to move axially and radial elastic opens due to thrust mechanism 3, by rotor core
200 internal diameter swelling.After die casting starts, rise with aluminium liquid filling iron core temperature, rotor core 200 internal diameter expands, resilient sleeve 2
Continue to open and keep the swelling of iron core internal diameter in the presence of thrust mechanism 3 motive force f, it is to avoid because using fixing axle to ferrum
The rotor core die casting deformation that the protection of in-core footpath is not enough and produces, after minimizing, operation school shape reducing is moved to machine air gap and rotor
The impact that balance produces, simple and reasonable, using reliability.
A kind of rotor die casting frock of embodiment according to a second aspect of the present invention, for carrying out to rotor core 200
Die casting.
Included according to the rotor die casting frock of the present invention: the turning for motor of embodiment according to a first aspect of the present invention
The fixing neutron 300 of the internal diameter protection device 100 of sub- die casting, die casting die cavity and die casting movable type 400.With reference to Fig. 2-Fig. 3, figure
6, in the inner diameter hole 210 that resilient sleeve 2 is suitable to be located at rotor core 200 before die casting, rotor core 200 is adapted to fit into before die casting
In die casting movable type 400, the fixing neutron 300 of die casting is located at the side in die casting movable type 400, such as Fig. 2
Shown in, the fixing neutron 300 of die casting is located at the left side in die casting movable type 400.One of enforcement in the present invention
In example, fixing axle 1 is axially displaceably located on the fixing neutron 300 of die casting die cavity before die casting, as shown in Figure 2.Preferably, press
Push rod head 410 is had on casting mould movable type 400, push rod head 410 has phase between restriction resilient sleeve 2 and rotor core 200
Thrust surface 411 to movement.
And in another embodiment of the present invention, stiff shaft 1 coordinates before die casting in resilient sleeve 2, now as Fig. 3 institute
Show, pushing mechanism 3(oil cylinder) exert a force away from one end of the fixing neutron 300 of die casting die cavity from stiff shaft 1, so that stiff shaft 1 phase
Resilient sleeve 2 is moved axially.Preferably, one end towards die casting movable type 400 of the fixing neutron 300 of die casting die cavity
On (i.e. right-hand member in Fig. 3) end face or one end of die casting movable type 400 has ejector 301.
According to the rotor die casting frock of the present invention, when rotor core carries out die casting, die casting is reduced or avoided
The generation of Cheng Tiexin ID distortion.
A kind of rotor method of squeeze forming of embodiment according to a third aspect of the present invention, using according to the present invention second
Rotor die casting frock described in aspect embodiment.
According to the rotor method of squeeze forming of the present invention, comprise the following steps:
S1, the resilient sleeve 2 in internal diameter protection device 100 is arranged in the inner diameter hole 210 of rotor core 200；
S2, rotor core 200 is loaded in die casting movable type 400；
S3, make stiff shaft 1 and resilient sleeve 2 produce axial movement so that resilient sleeve 2 radially elasticity is opened.
In one of embodiment of the present invention, as shown in Fig. 2 when fixing axle 1 axially displaceably sets before die casting
When on the fixing neutron 300 of die casting die cavity, can also comprise the following steps between above-mentioned steps s2 and s3:
S21, one end of stiff shaft 1 is arranged on the fixing neutron 300 of die casting die cavity；
S22, the other end of stiff shaft 1 is contained in resilient sleeve 2.
Certainly, wherein s1 and s2 can exchange with the order of s21.
And in another embodiment of the present invention, as shown in Figure 3 and Figure 6, stiff shaft 1 coordinates in resilient sleeve before die casting
In 2, so, pushing mechanism 3(oil cylinder or spring are directly passed through) from one end of stiff shaft 1 force, so that stiff shaft 1 is with respect to bullet
Property set 2 move axially.
According to the rotor method of squeeze forming of the present invention, when rotor core carries out die casting, it is possible to reduce or avoid
The generation of press casting procedure iron core ID distortion.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features, the knot describing with reference to this embodiment or example
Structure, material or feature are contained at least one embodiment or the example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
Multiple changes, modification, replacement and modification can be carried out to these embodiments in the case of the principle of the disengaging present invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (19)
1. a kind of internal diameter protection device for rotor die casting is it is characterised in that include:
Stiff shaft；And
Resilient sleeve, described resilient sleeve and described stiff shaft are coaxially disposed and the inner surface of described resilient sleeve is formed as and described rigidity
The corresponding outer surface of axle, and described resilient sleeve is configured to described stiff shaft when moving axially, described with respect to described resilient sleeve
Resilient sleeve radially open by elasticity, and described resilient sleeve is suitable to be located at the internal diameter in the hole of rotor core；
Pushing mechanism, described pushing mechanism is located at one end of described stiff shaft so that producing between described stiff shaft and described resilient sleeve
Raw axial movement；
Ejection circle, described ejection snare is located at the outside of described stiff shaft and limits receiving space and described stiff shaft between；
Back-moving spring, described back-moving spring is located in described receiving space.
2. internal diameter protection device according to claim 1 it is characterised in that described resilient sleeve outer surface be the face of cylinder,
And the external diameter of described resilient sleeve is constructed such that described resilient sleeve is fitted on the inwall of described inner diameter hole in original state.
3. internal diameter protection device according to claim 2 is it is characterised in that the inner surface of described resilient sleeve is formed as inner cone
Face, the outer surface of described stiff shaft is formed as the male cone (strobilus masculinus) with the cooperation of described inner conical surface, the smaller diameter end direction of described stiff shaft
Described resilient sleeve.
4. internal diameter protection device according to claim 3 is it is characterised in that described resilient sleeve includes body, described body
Perisporium along it, axially there is a plurality of first fluting and a plurality of second fluting, described first fluting and second is recessed at described body
Circumferentially-spaced setting of staggering.
5. internal diameter protection device according to claim 4 is it is characterised in that described first slots from the first of described body
End extends to the second end of neighbouring described body, and described second fluting extends to neighbouring described body from the second end of described body
First end.
6. internal diameter protection device according to claim 5 it is characterised in that described first fluting the second end with described
The distance between second end of body is 2-15mm；The distance between first end of the first end of described second fluting and described body
For 2-15mm.
7. internal diameter protection device according to claim 4 is it is characterised in that described first slots and described second fluting
Width is 0.5-6mm.
8. internal diameter protection device according to claim 2 is it is characterised in that the inner surface of described resilient sleeve is formed as inner circle
Cylinder, the outer surface of described stiff shaft is formed as the external cylindrical surface with the inner surface cooperation of described resilient sleeve.
9. internal diameter protection device according to claim 2 it is characterised in that described resilient sleeve be following elements at least
A kind of: v shape resilient disc, radiation finss, disc spring film.
10. internal diameter protection device according to claim 1 is it is characterised in that what described pushing mechanism was installed for pre-pressing
Spring, described spring is only against on one end away from described resilient sleeve of described stiff shaft.
11. internal diameter protection devices according to claim 10 it is characterised in that described stiff shaft away from described resilient sleeve
Described one end end face on there is the installing hole being axially concaved along it, described spring is located at described installation in the hole.
12. internal diameter protection devices according to claim 11 are it is characterised in that described pushing mechanism also includes:
Plug screw, described plug screw is located on one end away from described resilient sleeve of described stiff shaft, and wherein said spring is only against institute
State between plug screw and the inwall of described installing hole.
13. internal diameter protection devices according to claim 1 are it is characterised in that described pushing mechanism is oil cylinder, cylinder, liquid
Cylinder pressure or heat-resistant elastic material.
A kind of 14. rotor die casting frocks, for die casting being carried out to rotor core it is characterised in that including:
The internal diameter protection device for rotor die casting according to any one of claim 1-13, wherein said elasticity
It is suitable to before being enclosed within die casting be located at the internal diameter in the hole of described rotor core；
Die casting movable type, wherein said rotor core is adapted to fit in described die casting movable type before die casting；
Die casting die cavity fixes neutron, and the fixing neutron of described die casting die cavity is located at the side of described die casting movable type.
15. rotor die casting frocks according to claim 14 are it is characterised in that described stiff shaft can axle before die casting
Fix on neutron to being movably located at described die casting die cavity.
16. rotor die casting frocks according to claim 15 are it is characterised in that have on described die casting movable type
There is push rod head, described push rod head has the thrust surface limiting relative movement between described resilient sleeve and described rotor core.
17. rotor die casting frocks according to claim 14 are it is characterised in that described stiff shaft coordinates before die casting
In described resilient sleeve.
18. rotor die casting frocks according to claim 17 it is characterised in that the fixing neutron of described die casting die cavity or
One end of described die casting movable type is provided with has the bullet head part that thrust passes to stiff shaft.
A kind of 19. rotor method of squeeze forming, using the rotor die carter any one of claim 14-18
Dress is it is characterised in that comprise the following steps:
S1, the resilient sleeve in described internal diameter protection device is arranged on the internal diameter in the hole of described rotor core；
S2, by described rotor core load described die casting movable type in；
S3, make described stiff shaft and described resilient sleeve produce axial movement so that described resilient sleeve radially elasticity is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005556.XA CN103780026B (en) | 2014-01-06 | 2014-01-06 | Motor rotor die casting tooling and method and inner diameter protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005556.XA CN103780026B (en) | 2014-01-06 | 2014-01-06 | Motor rotor die casting tooling and method and inner diameter protection device |
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| Publication Number | Publication Date |
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| CN103780026A CN103780026A (en) | 2014-05-07 |
| CN103780026B true CN103780026B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410005556.XA Active CN103780026B (en) | 2014-01-06 | 2014-01-06 | Motor rotor die casting tooling and method and inner diameter protection device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305709B (en) * | 2015-10-19 | 2018-02-09 | 锦州汉拿电机有限公司 | Renewable type motor rotor crosses thermocutout |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290200A (en) * | 1998-03-18 | 2001-04-04 | 大宇电子株式会社 | Die casting apparatus for a rotor and method thereof |
| CN201422063Y (en) * | 2009-04-20 | 2010-03-10 | 无锡市中达电机有限公司 | Expansion-sleeve-type cast aluminum dummy shaft |
| CN201969863U (en) * | 2010-12-09 | 2011-09-14 | 云南铜业压铸科技有限公司 | Dummy shaft system used for pressure die casting for copper rotor |
| CN203722430U (en) * | 2014-01-06 | 2014-07-16 | 广东美芝精密制造有限公司 | Motor rotor die casting tool and inner diameter protecting device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4233687B2 (en) * | 1999-06-29 | 2009-03-04 | 東芝機械株式会社 | Die casting device for motor rotor |
-
2014
- 2014-01-06 CN CN201410005556.XA patent/CN103780026B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290200A (en) * | 1998-03-18 | 2001-04-04 | 大宇电子株式会社 | Die casting apparatus for a rotor and method thereof |
| CN201422063Y (en) * | 2009-04-20 | 2010-03-10 | 无锡市中达电机有限公司 | Expansion-sleeve-type cast aluminum dummy shaft |
| CN201969863U (en) * | 2010-12-09 | 2011-09-14 | 云南铜业压铸科技有限公司 | Dummy shaft system used for pressure die casting for copper rotor |
| CN203722430U (en) * | 2014-01-06 | 2014-07-16 | 广东美芝精密制造有限公司 | Motor rotor die casting tool and inner diameter protecting device thereof |
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|---|---|
| CN103780026A (en) | 2014-05-07 |
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