CN103780026A - 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
- Publication number
- CN103780026A CN103780026A CN201410005556.XA CN201410005556A CN103780026A CN 103780026 A CN103780026 A CN 103780026A CN 201410005556 A CN201410005556 A CN 201410005556A CN 103780026 A CN103780026 A CN 103780026A
- Authority
- CN
- China
- Prior art keywords
- die casting
- resilient sleeve
- internal diameter
- stiff shaft
- rotor
- 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
Images
Landscapes
- Manufacture Of Motors, Generators (AREA)
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 internal diameter protective device for rotor die casting, comprise the rotor die casting frock of described internal diameter protective device and adopt the rotor method of squeeze forming of rotor die casting frock.
Background technology
The existing internal diameter protective device that is applied to the die casting of rotor-type compressor rotor, generally has two kinds of forms, and the one, mould gate side arranges fixed axis 1 ＇ (as Fig. 7), and when die casting, fixed axis 1 ＇ and rotor core 200 ＇ are matched in clearance; The one, in mould, do not establish axle, before die casting, in rotor core, be pressed into protection axle 1 ＇ (as Fig. 8 a, 8b), this axle 1 ＇ is solid shafting or open hollow axle, and axle and rotor core 200 ＇ internal diameters are interference, transition or little matched in clearance, and when die casting, tape spool carries out.
In die casting cast gate side, fixed axis 1 ＇ is set, its shortcoming is, for guaranteeing matched moulds, rotor core internal diameter is pulled in the demoulding smoothly and not, axle 1 ＇ becomes matched in clearance with the matching design of the internal diameter of rotor core 200 ＇, when rotor core 200 ＇ cold conditions there is gap in axle 1 ＇ and hole, and after die casting starts, along with the filling of aluminium liquid to mold cavity and rotor core grooved, rotor internal diameter expanded by heating, original interstice continues to increase, due to rotor core 200 ＇ itself exist end face run-out and folded riveting inhomogeneous, suffered huge clamping pressure and the injection pressure of iron core while adding die casting, rotor internal diameter under unprotect state must deform.The actual die casting pre-determined bit axle that act as of this axle 1 ＇, there is no protective effect to rotor internal diameter.
Before die casting, in rotor core 200 ＇, be pressed into protection axle 1 ＇, as adopt solid shafting, as Fig. 8 a, the magnitude of interference must design very littlely, otherwise in the time entering axle and shaft, all easily pull rotor internal diameter or axle, after die casting starts, iron core is first heated, endoporus expands, and mandrel need just can be heated through overheated conduction, and temperature rise is slow, the diameter of axle does not synchronously increase with rotor core internal diameter, along with the carrying out of aluminium liquid filling process, the cooperation of the two changes gap into from slight interference, thereby has lost the protective effect to rotor core 200 ＇ die casting distortion; And adopt open hollow axle, as Fig. 8 b, due to the elasticity of axle; when die casting, axle does not have good bulging ability; the elasticity of aluminium liquid filling process axle is far smaller than the iron core internal diameter deformation force of die casting, and solid shafting is similar to adopting, and hollow shaft also can lose the protective effect to rotor core internal diameter.
Meanwhile, because rotor core is because of the difference of each batch of material, mould and punching press condition, internal diameter also changes, and the size of above two kinds of mode die casting axles is all fixed, and the mated condition of axle and rotor core internal diameter also just cannot guarantee to have stablized.
Various situations are above all not enough to the protection of rotor core endoporus when die casting.Thus, rotor core internal diameter die casting distortion is unavoidable, a series of quality problem such as deterioration, the increase of motor gap amount of unbalance of a series of not value-added activities in production in internal diameter school shape, the outer quarter sawing footpath etc. of operation and rotor dynamic balancing after the rotor also bringing.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, one object of the present invention is to propose a kind of simple in structure and internal diameter protective device for rotor die casting of in the time of die casting, rotor core endoporus being protected.
Another object of the present invention is to propose a kind of rotor die casting frock with described internal diameter protective device.
A further object of the present invention is to propose a kind of rotor method of squeeze forming that adopts described rotor die casting frock.
According to a kind of internal diameter protective device for rotor die casting of first aspect present invention embodiment, comprising: stiff shaft; And resilient sleeve, described resilient sleeve is formed as the outer surface corresponding with described stiff shaft with the inner surface of the coaxial setting of described stiff shaft and described resilient sleeve, and described resilient sleeve be configured to described stiff shaft in the time moving axially with respect to described resilient sleeve, described resilient sleeve radially elasticity open, described resilient sleeve is suitable for being located in the inner diameter hole of rotor core.
According to the internal diameter protective device of the embodiment of the present invention, there is good bulging ability, protective value can not be subject to the influence of fluctuations of rotor core internal diameter, 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 is constructed such that described resilient sleeve is fitted on the inwall of described inner diameter hole in the time of initial condition.
According to one embodiment of present invention, the inner surface of described resilient sleeve is formed as inner conical surface, and the outer surface of described stiff shaft is formed as the male cone (strobilus masculinus) coordinating with described inner conical surface, and the smaller diameter end of described stiff shaft is towards described resilient sleeve.
Alternatively, described resilient sleeve comprises body, and the perisporium of described body axially has many first flutings and many second flutings along it, and described first slots and the upwards interval setting of staggering of the second week that is recessed at described body.
Preferably, described the first fluting extends to the second end of contiguous described body from the first end of described body, and described the second fluting extends to the first end of contiguous described body from the second end of described body.
Preferably, the distance between the second end and second end of described body of described the first fluting is 2-15mm; Distance between first end and the first end of described body of described the second fluting is 2-15mm.
Preferably, the width of described the first fluting and described the 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, and the outer surface of described stiff shaft is formed as the external cylindrical surface coordinating with the inner surface of described resilient sleeve.
According to one embodiment of present invention, described resilient sleeve is at least one in following elements: V-arrangement resilient disc, radiation fins, disc spring film.
According to one embodiment of present invention, described internal diameter protective device further comprises: pushing mechanism, described pushing mechanism is located at one end of described stiff shaft so that produce and move axially between described stiff shaft and described resilient sleeve.
According to one embodiment of present invention, described pushing mechanism is the spring that pre-pressing is installed, and described spring is only against on one end away from described resilient sleeve of described stiff shaft.
Alternatively, have along its axial recessed installing hole on the described one end end face away from described resilient sleeve of described stiff shaft, described spring is located in described installing hole.
Preferably, described pushing mechanism also comprises: plug screw, and described plug screw is positioned on one end away from described resilient sleeve of described stiff shaft, and 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 protective device also comprises: eject circle, described in eject snare be located at the outside of described stiff shaft and and described stiff shaft between limit spatial accommodation; Back-moving spring, described back-moving spring is located in described spatial accommodation.
According to the internal diameter protective device of the embodiment of the present invention, when die casting matched moulds, the outer surface of stiff shaft coordinates with the inner surface of resilient sleeve, and because thrust mechanism promotion stiff shaft moves axially, radial elastic opens resilient sleeve, by the internal diameter swelling of rotor core.After die casting starts; along with aluminium liquid is filled iron core temperature rise; rotor core internal diameter expands; resilient sleeve continues to open and keep the swelling of iron core internal diameter under the effect of thrust mechanism motive force; avoid because using fixed axis to the not enough rotor core die casting distortion producing of iron core internal diameter protection; after reducing, operation school shape the reduction impact on motor gap and rotor dynamic balancing generation, simple and reasonable, uses reliable.
According to a kind of rotor die casting frock of second aspect present invention embodiment, for rotor core is carried out to die casting, comprise: according to the internal diameter protective device for rotor die casting described in first aspect present invention embodiment, wherein said resilient sleeve is suitable for being located in the inner diameter hole of described rotor core before die casting; Die casting movable type, wherein said rotor core is suitable for packing in described die casting movable type before die casting; Die casting die cavity is fixed neutron, and the fixing neutron of described die casting die cavity is located at a side of described die casting movable type.
According to one embodiment of present invention, described fixed axis can axially movably be located on the fixing neutron of described die casting die cavity before die casting.
Alternatively, on described die casting movable type, there is push rod head, in described push rod head, there is the thrust surface relatively moving between the described resilient sleeve of restriction and described rotor core.
According to one embodiment of present invention, described fixed axis is engaged 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 and has the bullet head part that thrust is passed to stiff shaft.
According to rotor die casting frock of the present invention, in the time that rotor core carries out die casting, reduce or avoided the generation of press casting procedure iron core internal diameter distortion.
According to a kind of rotor method of squeeze forming of second aspect present invention embodiment, adopt according to the rotor die casting frock described in second aspect present invention embodiment, comprise the following steps:
S1, the resilient sleeve in described internal diameter protective device is arranged in the inner diameter hole of described rotor core;
S2, described rotor core is packed in described die casting movable type;
S3, described stiff shaft and described resilient sleeve are produced move axially so that described resilient sleeve radially elasticity open.
According to rotor method of squeeze forming of the present invention, in the time that rotor core carries out die casting, can reduce or avoid the generation of press casting procedure iron core internal diameter distortion.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is fundamental diagram when stiff shaft is diminished shaft in internal diameter protective device according to an embodiment of the invention;
Fig. 2 is the cutaway view of internal diameter protective device according to an embodiment of the invention, and wherein to adopt diminished shaft and pushing mechanism be spring to stiff shaft;
Fig. 3 is the cutaway view of internal diameter protective device in accordance with another embodiment of the present invention, and wherein to adopt diminished shaft and pushing mechanism be oil cylinder to stiff shaft;
Fig. 4 is the cutaway view of Fig. 2 and Fig. 3 Elastic cover;
Fig. 5 is fundamental diagram when stiff shaft is d-axis in internal diameter protective device according to an embodiment of the invention;
Fig. 6 is the cutaway view of internal diameter protective device according to an embodiment of the invention, and wherein stiff shaft adopts d-axis, and resilient sleeve adopts V-type resilient disc;
Fig. 7 is an embodiment of existing internal diameter protective device, wherein in mould gate side, fixed axis is set;
Fig. 8 a and Fig. 8 b are two embodiment of existing internal diameter protective device, wherein before die casting, are pressed into protection axle in rotor core, and in Fig. 8 a, protecting axle is solid shafting, and in Fig. 8 b, protecting axle is hollow shaft.
Reference numeral:
Internal diameter protective device 100;
Die casting movable type 400; Push rod head 410; Thrust surface 411;
Thrust F; Resilient sleeve original outer diameter D1; Resilient sleeve is opened D outer diameter 2
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " interior ", " outward ", " axially ", " radially ", orientation or the position relationship of indications such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Describe according to the internal diameter protective device 100 for rotor die casting of first aspect present invention embodiment below with reference to Fig. 1-Fig. 6, described internal diameter protective device 100 is protected the internal diameter of rotor core 200 for motor rotor die-casting process.
According to the internal diameter protective device 100 of the embodiment of the present invention; comprise: stiff shaft 1 and resilient sleeve 2; resilient sleeve 2 is formed as the outer surface corresponding with stiff shaft 1 with the inner surface of the coaxial setting of stiff shaft 1 and resilient sleeve 2; and resilient sleeve 2 be configured to stiff shaft 1 while moving vertically with respect to resilient sleeve 2, resilient sleeve 2 radially elasticity open, resilient sleeve 2 is suitable for being located in the inner diameter hole 210 of rotor core 200.
As shown in Figure 1 and Figure 5, before die casting starts, stiff shaft 1 is positioned at initial position S1, after die casting starts, along with high temperature aluminum liquid starts to fill the cast aluminium slotted eye of mold cavity and rotor core 200, rotor core 200 temperature constantly raise, the internal diameter of rotor core 200 is because the effect of expanding with heat and contract with cold starts to increase, bulging power between inner diameter hole 210 and the resilient sleeve 2 of rotor core 200 reduces even to disappear, stiff shaft 1 moves axially relatively (for example, to the right-hand member in Fig. 1 and Fig. 5) in resilient sleeve 2, promoting resilient sleeve 2 continues to open, be close to the inwall of the inner diameter hole 210 of rotor core 200, continue to keep swelling.Stiff shaft 1 distance, delta that relatively moved, in S2 position, swelling position, S2=S1+ Δ, now, the outside dimension of resilient sleeve 2 has been increased to D2 from D1, has increased by 2 δ.In whole press casting procedure, the internal diameter of rotor core 200 remains swelling under the effect of stiff shaft and resilient sleeve, and after die casting, the internal diameter of rotor core 200 and punching press core dimensions approach, and are out of shape littlely, and circularity and cylindricity are good.
According to the internal diameter protective device of the embodiment of the present invention, there is good bulging ability, protective value can not be subject to the influence of fluctuations of rotor core internal diameter, 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 constructed such that resilient sleeve 2 is fitted on the inwall of inner diameter hole 210 in the time of initial condition.
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, and the outer surface of stiff shaft 1 is formed as the male cone (strobilus masculinus) coordinating with inner conical surface, is formed as diminished shaft.The smaller diameter end 11(of stiff shaft 1 is the right-hand member in Fig. 1-Fig. 3) towards resilient sleeve 2.
In some optional examples, as shown in Figure 4, resilient sleeve 2 comprises body 21, and the perisporium of body 21 axially has many first fluting 22a and many second fluting 22b along it, and the first fluting 22a and the second fluting 22b are in the upwards interval setting of staggering of week of body 21.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 from the first end of body 21, and the second fluting 22b extends to the first end of adjacent body 21 from the second end of body 21.Alternatively, the distance between first fluting the second end of 22a and the second end of body 21 is 2-15mm; Distance between the second fluting first end of 22b and the first end of body 21 is 2-15mm.In addition preferably, the width of the first fluting 22a and the second fluting 22b is 0.5-6mm.
Thus, in the time of initial condition, due to the effect of the original dimension of resilient sleeve, resilient sleeve 2 is at the interior one-tenth open configuration of rotor core 200, the now inwall of the inner diameter hole 210 of the outer surface of resilient sleeve 2 and rotor core 200.When the inner conical surface of resilient sleeve 2 contacts with the male cone (strobilus masculinus) of stiff shaft 1, when stiff shaft 1 axially continues to move (for example, as the right-hand member in Fig. 2 and Fig. 3) along the two, will promote resilient sleeve 2 and open, the inwall of the inner diameter hole 210 of swelling rotor core 200.
Particularly, as shown in Figure 1, initial position is the state of die casting matched moulds fixed axis 1 and resilient sleeve 2 when completing cast aluminium and not starting, i.e. position shown in dotted line.After matched moulds completes, fixed axis 1 is in S1 position, and now, the swelling outside dimension of resilient sleeve 2 is D1.After press casting procedure rotor core internal diameter increases, fixed axis 1 continues to arrive forward S2 position with respect to resilient sleeve 2, keeps the swelling to resilient sleeve, and resilient sleeve 2 is opened, and then the inwall of the inner diameter hole 210 of swelling rotor core 200, reduce or avoid the generation of press casting procedure rotor 200 iron core internal diameter distortion.
According to internal diameter protective device 100 of the present invention, core is to use the cooperation of stiff shaft 1 and resilient sleeve 2, rotor internal diameter is implemented to the dynamic swelling of internal diameter of die casting overall process.
According to preferred embodiments more of the present invention, internal diameter protective device 100 further comprises pushing mechanism 3, and pushing mechanism 3 is located at one end of stiff shaft 1 so that produce and move axially between stiff shaft 1 and resilient sleeve 2.In example as shown in Figure 2, the spring 31 that pushing mechanism 3 is installed for pre-pressing, spring 31 is only against on one end away from resilient sleeve 2 (being the left end in Fig. 2) of stiff shaft 1.Particularly, one end 12(away from resilient sleeve 2 of stiff shaft 1 is the left end in Fig. 2) have on end face along its axial recessed installing hole 121, spring 31 is located in installing hole 121.Further, pushing mechanism 3 also comprises plug screw 4, and plug screw 4 is positioned on one end 12 away from resilient sleeve 2 of stiff shaft 1, and its medi-spring is only against between plug screw 4 and the inwall of installing hole 121, and plug screw 4 supports spring 31.Thus, in the time that the internal diameter of rotor core 200 starts to increase due to the effect of expanding with heat and contract with cold, bulging power between the inwall of inner diameter hole 210 and resilient sleeve 2 reduces even to disappear, now spring 31, because the left end that its spring return effect promotes stiff shaft 1 radially moves right, promotes resilient sleeve 2 and continues to open.
In the above-described embodiments, the inner surface of having described resilient sleeve 2 is the example that inner conical surface and fixed axis 1 are diminished shaft.But the present invention is not limited to this, as shown in Figure 5 and Figure 6, the inner surface of resilient sleeve 2 can also be formed as inner cylinder face, and the outer surface of stiff shaft 1 is correspondingly formed as the external cylindrical surface coordinating with the inner surface of resilient sleeve 2.As shown in Figure 6, resilient sleeve 2 is V-arrangement resilient disc.
Stiff shaft shown in Fig. 5 and Fig. 6 is that the operation principle of the example that is diminished shaft of the fixed axis shown in example and Fig. 2 of d-axis is similar, when difference is that stiff shaft is d-axis, pushing mechanism 3 promotes resilient sleeve 2 and moves with respect to fixed axis 1, be that one end of resilient sleeve 2 is pushed and the other end is stopped, while promoting resilient sleeve 2 thus, stiff shaft 1 will impel resilient sleeve 2 radially to open.As shown in Figure 5, initial position is the state of die casting matched moulds pushing mechanism 3 and V-arrangement resilient disc when completing cast aluminium and not starting, i.e. position shown in dotted line.After matched moulds completes, pushing mechanism 3 is in S1 position, and now, the swelling outside dimension of V-arrangement 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-arrangement resilient disc, and V-arrangement resilient disc opens, and then the inwall of the inner diameter hole 210 of swelling rotor core 200, reduce or avoid the generation of press casting procedure rotor 200 iron core internal diameter distortion.
Certainly, the invention is not restricted to this, resilient sleeve 2 can also be the wherein a kind of or combination of radiation fins, disc spring film, and at least one of radiation fins and disc spring film and the combination of V-arrangement resilient disc.
Preferably, according to internal diameter protective device 100 of the present invention, also comprise and eject circle 5 and back-moving spring 6, eject circle 5 be set in the outside of stiff shaft 1 and and stiff shaft 1 between limit spatial accommodation, back-moving spring 6 is located in spatial accommodation, as shown in Figure 2.
The spring that pushing mechanism 3 above-mentioned is installed for pre-pressing, because its elastic force effect promotes stiff shaft 1.In another embodiment of the present invention, as shown in Figure 3, pushing mechanism 3 is oil cylinder.But the present invention is not limited to this, pushing mechanism 3 can also, for various structures that axial motive force F can be provided stiff shaft 1 such as cylinder, hydraulic cylinder or heat-resistant elastic materials, no longer describe in detail at this.
It is also noted that; each embodiment of shape, resilient sleeve and the pushing mechanism etc. of above-mentioned stiff shaft use that can be bonded to each other; and the embodiment providing to be exemplified as object in present specification is provided, within these all will fall into protection scope of the present invention.
According to the internal diameter protective device 100 of the embodiment of the present invention; when die casting matched moulds; the outer surface of stiff shaft 1 coordinates with the inner surface of resilient sleeve 2, and resilient sleeve 2 is because thrust mechanism 3 promotes that stiff shaft 1 moves axially and radial elastic opens, by the internal diameter swelling of rotor core 200.After die casting starts; along with aluminium liquid is filled iron core temperature rise; rotor core 200 internal diameters expand; resilient sleeve 2 continues to open and keep the swelling of iron core internal diameter under the effect of thrust mechanism 3 motive force F; avoid because using fixed axis to the not enough rotor core die casting distortion producing of iron core internal diameter protection; after reducing, operation school shape the reduction impact on motor gap and rotor dynamic balancing generation, simple and reasonable, uses reliable.
According to a kind of rotor die casting frock of second aspect present invention embodiment, for rotor core 200 is carried out to die casting.
Rotor die casting frock according to the present invention comprises: according to the internal diameter protective device 100 for rotor die casting of first aspect present invention embodiment, the fixing neutron 300 of die casting die cavity and die casting movable type 400.With reference to figure 2-Fig. 3, Fig. 6, resilient sleeve 2 is suitable for being located in the inner diameter hole 210 of rotor core 200 before die casting, rotor core 200 is suitable for packing in die casting movable type 400 before die casting, the fixing neutron 300 of die casting is located at the side in die casting movable type 400, for example as shown in Figure 2, the fixing neutron 300 of die casting is located at the left side in die casting movable type 400.In one of them embodiment of the present invention, fixed axis 1 can axially movably be located on the fixing neutron 300 of die casting die cavity, as shown in Figure 2 before die casting.Preferably, on die casting movable type 400, there is push rod head 410, in push rod head 410, there is the thrust surface 411 relatively moving between restriction resilient sleeve 2 and rotor core 200.
And in another embodiment of the present invention, stiff shaft 1 is engaged in resilient sleeve 2 before die casting, now as shown in Figure 3, pushing mechanism 3(oil cylinder) from one end application of force away from the fixing neutron 300 of die casting die cavity of stiff shaft 1, so that stiff shaft 1 moves axially with respect to resilient sleeve 2.Preferably, on one end towards die casting movable type 400 (being right-hand member in Fig. 3) end face of the fixing neutron 300 of die casting die cavity or one end of die casting movable type 400 has ejector 301.
According to rotor die casting frock of the present invention, in the time that rotor core carries out die casting, reduce or avoided the generation of press casting procedure iron core internal diameter distortion.
According to a kind of rotor method of squeeze forming of third aspect present invention embodiment, adopt according to the rotor die casting frock described in second aspect present invention embodiment.
According to rotor method of squeeze forming of the present invention, comprise the following steps:
S1, the resilient sleeve in internal diameter protective device 100 2 is arranged in the inner diameter hole 210 of rotor core 200;
S2, rotor core 200 is packed in die casting movable type 400;
S3, stiff shaft 1 and resilient sleeve 2 are produced move axially so that resilient sleeve 2 radially elasticity open.
In one of them embodiment of the present invention, as shown in Figure 2, in the time that fixed axis 1 can axially movably be located on the fixing neutron 300 of die casting die cavity before die casting, between above-mentioned steps S2 and S3, can also comprise the following steps:
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 is engaged in resilient sleeve 2, like this before die casting, directly by pushing mechanism 3(oil cylinder or spring) from one end application of force of stiff shaft 1, so that stiff shaft 1 moves axially with respect to resilient sleeve 2.
According to rotor method of squeeze forming of the present invention, in the time that rotor core carries out die casting, can reduce or avoid the generation of press casting procedure iron core internal diameter distortion.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (21)
1. for an internal diameter protective device for rotor die casting, it is characterized in that, comprising:
Stiff shaft; And
Resilient sleeve, described resilient sleeve is formed as the outer surface corresponding with described stiff shaft with the inner surface of the coaxial setting of described stiff shaft and described resilient sleeve, and described resilient sleeve be configured to described stiff shaft while moving axially with respect to described resilient sleeve, described resilient sleeve radially elasticity open, described resilient sleeve is suitable for being located in the inner diameter hole of rotor core.
2. internal diameter protective device according to claim 1, is characterized in that, the outer surface of described resilient sleeve is 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 the time of initial condition.
3. internal diameter protective device according to claim 2; it is characterized in that; the inner surface of described resilient sleeve is formed as inner conical surface, and the outer surface of described stiff shaft is formed as the male cone (strobilus masculinus) coordinating with described inner conical surface, and the smaller diameter end of described stiff shaft is towards described resilient sleeve.
4. internal diameter protective device according to claim 3; it is characterized in that; described resilient sleeve comprises body, and the perisporium of described body axially has many first flutings and many second flutings along it, and described first slots and the upwards interval setting of staggering of the second week that is recessed at described body.
5. internal diameter protective device according to claim 4; it is characterized in that; described the first fluting extends to the second end of contiguous described body from the first end of described body, described the second fluting extends to the first end of contiguous described body from the second end of described body.
6. internal diameter protective device according to claim 5, is characterized in that, the distance between the second end and second end of described body of described the first fluting is 2-15mm; Distance between first end and the first end of described body of described the second fluting is 2-15mm.
7. internal diameter protective device according to claim 4, is characterized in that, the width of described the first fluting and described the second fluting is 0.5-6mm.
8. internal diameter protective device according to claim 2, is characterized in that, the inner surface of described resilient sleeve is formed as inner cylinder face, and the outer surface of described stiff shaft is formed as the external cylindrical surface coordinating with the inner surface of described resilient sleeve.
9. internal diameter protective device according to claim 2, is characterized in that, described resilient sleeve is at least one in following elements: V-arrangement resilient disc, radiation fins, disc spring film.
10. according to the internal diameter protective device described in any one in claim 1-9, it is characterized in that, further comprise:
Pushing mechanism, described pushing mechanism is located at one end of described stiff shaft so that produce and move axially between described stiff shaft and described resilient sleeve.
11. internal diameter protective devices according to claim 10, is characterized in that, described pushing mechanism is the spring that pre-pressing is installed, and described spring is only against on one end away from described resilient sleeve of described stiff shaft.
12. internal diameter protective devices according to claim 11, is characterized in that, have along its axial recessed installing hole on the described one end end face away from described resilient sleeve of described stiff shaft, and described spring is located in described installing hole.
13. internal diameter protective devices according to claim 12, is characterized in that, described pushing mechanism also comprises:
Plug screw, described plug screw is positioned on one end away from described resilient sleeve of described stiff shaft, and wherein said spring is only against between described plug screw and the inwall of described installing hole.
14. internal diameter protective devices according to claim 10, is characterized in that, described pushing mechanism is oil cylinder, cylinder, hydraulic cylinder or heat-resistant elastic material.
15. internal diameter protective devices according to claim 10, is characterized in that, described internal diameter protective device also comprises:
Eject circle, described in eject snare be located at the outside of described stiff shaft and and described stiff shaft between limit spatial accommodation;
Back-moving spring, described back-moving spring is located in described spatial accommodation.
16. 1 kinds of rotor die casting frocks, for rotor core is carried out to die casting, is characterized in that, comprising:
According to the internal diameter protective device for rotor die casting described in any one in claim 1-15, wherein said resilient sleeve is suitable for being located in the inner diameter hole of described rotor core before die casting;
Die casting movable type, wherein said rotor core is suitable for packing in described die casting movable type before die casting.
Die casting die cavity is fixed neutron, and the fixing neutron of described die casting die cavity is located at a side of described die casting movable type.
17. rotor die casting frocks according to claim 16, is characterized in that, described fixed axis can axially movably be located on the fixing neutron of described die casting die cavity before die casting.
18. rotor die casting frocks according to claim 17, is characterized in that having push rod head on described die casting movable type, have the thrust surface relatively moving between the described resilient sleeve of restriction and described rotor core in described push rod head.
19. rotor die casting frocks according to claim 16, is characterized in that, described stiff shaft is engaged in described resilient sleeve before die casting.
20. rotor die casting frocks according to claim 19, is characterized in that, one end of the fixing neutron of described die casting die cavity or described die casting movable type is provided with has the bullet head part that thrust is passed to stiff shaft.
21. 1 kinds of rotor method of squeeze forming, adopt the rotor die casting frock described in any one in claim 16-20, it is characterized in that, comprise the following steps:
S1, the resilient sleeve in described internal diameter protective device is arranged in the inner diameter hole of described rotor core;
S2, described rotor core is packed in described die casting movable type;
S3, described stiff shaft and described resilient sleeve are produced move axially so that described resilient sleeve radially elasticity open.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103780026A true CN103780026A (en) | 2014-05-07 |
| CN103780026B CN103780026B (en) | 2017-01-18 |
Family
ID=50571972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410005556.XA Active CN103780026B (en) | 2014-01-06 | 2014-01-06 | Motor rotor die casting tooling and method and inner diameter protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103780026B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305709A (en) * | 2015-10-19 | 2016-02-03 | 锦州汉拿电机有限公司 | Recoverable motor rotor overheating insurance device |
| CN107745539A (en) * | 2017-11-13 | 2018-03-02 | 西门子数控（南京）有限公司 | Lamination pressing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009560A (en) * | 1999-06-29 | 2001-01-16 | Toshiba Mach Co Ltd | Die cast device for motor rotor |
| 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 |
-
2014
- 2014-01-06 CN CN201410005556.XA patent/CN103780026B/en active Active
Patent Citations (5)
| 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 |
| JP2001009560A (en) * | 1999-06-29 | 2001-01-16 | Toshiba Mach Co Ltd | Die cast device for motor rotor |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305709A (en) * | 2015-10-19 | 2016-02-03 | 锦州汉拿电机有限公司 | Recoverable motor rotor overheating insurance device |
| CN105305709B (en) * | 2015-10-19 | 2018-02-09 | 锦州汉拿电机有限公司 | Renewable type motor rotor crosses thermocutout |
| CN107745539A (en) * | 2017-11-13 | 2018-03-02 | 西门子数控（南京）有限公司 | Lamination pressing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103780026B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3360826A (en) | Device for forming a socket at the end of a pipe | |
| CN104114891B (en) | Including concentric slave cylinders for hydraulic clutch actuation means | |
| CN104272566A (en) | Method for potting a stator | |
| CN104690127B (en) | Bulge processing unit (plant) and processing method thereof on pipe fitting | |
| JP2017518188A (en) | Variable wall lightweight axle shaft with integral flange member and method for making the same | |
| EP1946903A1 (en) | Injection molding apparatus | |
| CN203722430U (en) | Motor rotor die casting tool and inner diameter protecting device thereof | |
| JP2015002614A (en) | Coil casting device and coil casting method | |
| US9457400B2 (en) | Casting valve with a post-compression piston | |
| CN105499388A (en) | Split expanding type mold and method for manufacturing annular piece with ribs inside | |
| CN103780026A (en) | Motor rotor die casting tooling and method and inner diameter protection device | |
| US9821365B2 (en) | Method for manufacturing a camshaft for an internal combustion engine by expanding a tubular element with a high pressure fluid and simultaneously compressing the tubular element axially | |
| JP2015044217A (en) | Core molding device | |
| JP2015505753A (en) | A winding method for producing a rotationally symmetric tubular hollow body preform, an apparatus for producing a rotationally symmetric tubular hollow body preform, and a rotationally symmetric tubular hollow body preform Method of manufacturing an apparatus for manufacturing | |
| CN110792528B (en) | Combined core mold for forming multi-ring-groove medicine type structure and process | |
| JP5019005B1 (en) | Resin tube folding method, resin tube coating roll manufacturing method | |
| WO2017212907A1 (en) | Injection compression molding mold and injection compression molding method | |
| CN104139183B (en) | The shaped device of rare earth permanent-magnetic material and forming method | |
| JP2006150675A (en) | Mold assembly | |
| CN106825271B (en) | The processing method that heavy caliber thick wall squeezes cast pipe mold flaring | |
| KR101755985B1 (en) | Damper and production method thereof | |
| CN107900241A (en) | The local bulging device of pipe fitting | |
| CN103586300A (en) | Method for extruding metal part | |
| CN110777399A (en) | Core mould for electroforming to prepare thin-wall seamless metal round pipe | |
| JP4899494B2 (en) | Forging molding apparatus and forging molding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |