CN215300298U

CN215300298U - Cast aluminum rotor structure with improved forming quality

Info

Publication number: CN215300298U
Application number: CN202121012845.4U
Authority: CN
Inventors: 陈祥
Original assignee: Wuxi Lianyuanda Precision Machinery Co ltd
Current assignee: Wuxi Lianyuanda Precision Machinery Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-12-24
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to a cast aluminum rotor structure with improved molding quality, which comprises a rotor body formed by laminating a plurality of rotor punching sheets and assembling ventilation slot plates, wherein a first end plate and a second end plate are respectively arranged at the two ends of the rotor body, the structure of the second end plate is the same as that of the rotor punching sheets, the second end plate comprises an annular punching sheet, a groove shape is formed on the outer ring of the circumference of the second end plate, and a fan-shaped ventilation hole is formed on the inner ring positioned in the groove shape; the rotor punching sheets and the ventilation holes of the second end plate form ventilation channels extending along the axial direction in the rotor body, the structure of the first end plate is different from that of the rotor punching sheets, the first end plate comprises annular punching sheets, the outer ring of the circumference of the first end plate is provided with a groove shape, and the inner ring of the first end plate is not provided with the ventilation holes so as to form a closed structure; when the cell type through first end plate carries out centrifugal casting to rotor body, ventilation hole enclosed construction is used for preventing aluminium liquid from getting into in the ventiduct to ensure the ventilation effect of finished product rotor, reduce the temperature rise of rotor when long-time operation.

Description

Cast aluminum rotor structure with improved forming quality

Technical Field

The utility model belongs to the technical field of cast aluminum rotor makes technical field and specifically relates to a cast aluminum rotor structure that shaping quality improves.

Background

In the prior art, a centrifugal casting method is usually adopted for casting aluminum for a cast aluminum rotor, and when aluminum liquid is cast into a laminated and assembled rotor body, the centrifugal casting method is adopted for injecting and molding from one end of the rotor body. The method has the defects that when pouring is easily caused by centrifugal motion, aluminum liquid is poured into the ventilation holes of the rotor body, and ventilation quantity and heat dissipation of the rotor are influenced. In addition, in order to match the molding requirement of the cast aluminum rear end balance column structure, a pouring gate is small, unsmooth exhaust and reduced aluminum liquid filling rate exist, so that air holes exist in a groove type inner part and an end ring of a molded rotor, the sectional area is reduced, the resistance is increased, the rotor is overheated after long-time operation, and the molding quality of the rotor is seriously influenced.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model provides a cast aluminium rotor structure that shaping quality improves to solve the technical problem that the rotor quality descends after the cast aluminium shaping.

The utility model adopts the technical scheme as follows:

a cast aluminum rotor structure with improved forming quality comprises a rotor body formed by laminating a plurality of rotor punching sheets and assembling ventilation groove plates, wherein a first end plate and a second end plate are respectively arranged at two ends of the rotor body; the structure of the first end plate is different from that of the rotor punching sheet, the structure of the first end plate comprises an annular punching sheet, the outer ring of the circumference of the annular punching sheet is provided with a groove shape, and the inner ring of the annular punching sheet is not provided with the ventilation holes so as to form a closed structure; when the rotor body is centrifugally poured through the groove shape of the first end plate, the closed structure is used for preventing aluminum liquid from entering the ventilation duct.

The further technical scheme is as follows:

after centrifugal casting and aluminum casting are completed, a first end ring is formed on the outer side of the first end plate, a first balance column corresponding to the position of an inlet gate on a casting mold is formed on the first end ring, at least one circle of second balance columns are formed on the inner circle or the outer circle of the first balance column, and the second balance columns correspond to the positions of exhaust holes used for exhausting air during casting on the mold.

The second balancing columns are uniformly distributed along the circumferential direction.

And after centrifugal casting and aluminum casting are completed, a second end ring is formed on the outer side of the second end plate, and a third balance column corresponding to the position of the outlet gate on the casting mold is formed on the second end ring.

The thickness of the first end plate and the second end plate is 6 mm.

The utility model has the advantages as follows:

the utility model discloses improved the structure of first end plate, because not set up the ventilation hole on the first end plate, through first end plate to rotor body pouring aluminium liquid, can prevent effectively that centrifugal casting in-process aluminium liquid from pouring into in rotor body's the ventiduct to ensure the ventilation effect of finished product rotor, reduce the temperature rise of rotor when long-time function, improve heat dispersion.

The utility model discloses the first end links that have the balanced post of at least round second of the outside formation of first end plate after the cast aluminium for in the pouring process, the air is discharged through exhaust hole (way) on the mould that the balanced post of second corresponds, thereby has improved exhaust effect, improves aluminium liquid filling rate, prevents the inside formation gas pocket of rotor shaping back cell type.

Drawings

Fig. 1 is a schematic structural view of the front aluminum casting rotor of the present invention.

Fig. 2 is a schematic structural diagram of the first end plate of the present invention.

Fig. 3 is a schematic structural diagram of the second end plate of the present invention.

Fig. 4 is a schematic structural view of the cast aluminum rear rotor according to the present invention.

Fig. 5 is a schematic structural diagram of the first end ring of the present invention.

Fig. 6 is a schematic structural diagram of a second end ring according to the present invention.

In the figure: 1. a first end plate; 2. a slot shape; 3. a second end plate; 4. a vent hole; 5. a rotor body; 51. an air duct; 6. a first end ring; 7. a first balance column; 8. a second balance column; 9. a second end ring; 10. third balancing column 11, closed structure.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The cast aluminum rotor structure with improved molding quality of the embodiment, as shown in fig. 1, includes a rotor body 5 formed by laminating a plurality of rotor sheets and assembling and welding vent grooves of the vent grooves, wherein a first end plate 1 and a second end plate 3 are respectively arranged at two ends of the rotor body 5; referring to fig. 2, the second end plate 3 has the same structure as the rotor sheet, and includes an annular sheet, a groove type 2 is formed on an outer ring of the circumference of the annular sheet, and a vent hole 4 is formed on an inner ring of the groove type 2; as shown in fig. 1, a plurality of rotor sheets and the ventilation holes 4 of the second end plate 3 form ventilation channels 51 extending in the axial direction in the rotor body 5; as shown in fig. 3, the structure of the first end plate 1 is different from that of a rotor sheet, the structure of the first end plate 1 includes an annular sheet, a groove type 2 is formed on the outer ring of the circumference of the annular sheet, and a ventilation hole 4 is not formed on the inner ring of the annular sheet, so that a closed structure 11 is formed; the enclosure structure 11 is used to prevent the molten aluminum from entering the air duct 51 when centrifugal casting is performed on the rotor body 5 through the groove type 2 of the first end plate 1.

In the above embodiment, the first end plate 1 and the second end plate 3 are used for preventing the punching sheet from bouncing and deforming during heating to influence the parallelism of the upper end surface and the lower end surface of the rotor, and are convenient for casting aluminum on the rotor. The first end plate 1 is not provided with the vent holes 4, so that aluminum water is poured into the rotor body 5 through the groove type 2 on the first end plate 1 without the vent holes 4 during centrifugal pouring, and the aluminum water can be effectively prevented from entering the air duct 51.

Specifically, the groove type 2 on the first end plate 1, the second end plate 3 and the rotor punching sheet corresponds to each other. Meanwhile, the positions and the sizes of the second end plate 3 and the vent holes 4 on the rotor punching sheet correspond to each other. So that the rotor is laminated and cast to form corresponding groove-shaped channels and ventilation channels along the axial direction.

Furthermore, after the pouring of the rotor molten aluminum is completed, through holes can be processed at the positions of the corresponding vent holes on the first end plate 1, so that the heat dissipation of the rotor body 5 is increased.

In the above embodiment, the first end plate 1 and the second end plate 3 each have a thickness of 6 mm.

Preferably, the thickness of the first end plate 1 and the second end plate 3 are both 6mm, which ensures a better straightness of the rotor. If the thickness is too small, the end plate is easy to deform, and the thickness is too large, so that it is difficult to process the vent hole again after the pouring is finished.

In the above embodiment, after the rotor body 5 is centrifugally cast and aluminum casting is completed, as shown in fig. 4 and 5, the first end ring 6 is formed on the outer side of the first end plate 1, and the first balance post 7 corresponding to the gate-in position on the mold is formed on the first end ring 6. The first balance column 7 is used for hanging the weight in the dynamic balance test of the subsequent dynamic rotor finished product.

In order to further improve the rotor forming quality, at least one circle of exhaust holes (channels) is added on the circumferential outer ring or inner ring of the mold corresponding to the position of the gate, and at least one circle of second balance columns 8 are correspondingly formed on the first end ring 6 formed by casting, wherein the second balance columns 8 are positioned on the circumferential inner ring or outer ring of the first balance columns 7 by improving the mold structure used for casting aluminum. The second balance post 8 corresponds to the position of an exhaust hole for exhausting air during casting on the mold.

Specifically, the second balance columns 8 are uniformly arranged in the circumferential direction.

Specifically, the second balance post 8 and the first balance post 7 are arranged in a staggered manner in the radial direction.

In the pouring process, the air is exhausted to the outside of the rotor body 5 through the exhaust holes (passages), so that the exhaust effect in the pouring process is improved, the filling rate of aluminum liquid is improved, and the end ring forming quality is prevented from being influenced by the gas left in the aluminum liquid. The setting of exhaust hole (way) necessarily leads to the shaping of second equalizing column 8, but in the dynamic balance test process, only need one row of equalizing column can satisfy the heavy requirement of hanging usually, only need promptly by going into the corresponding first equalizing column 7 that forms of runner structure can, consequently, can get rid of second equalizing column 8 after the shaping through milling according to actual need in the actual course of working.

After centrifugal casting and aluminum casting of the rotor body 5 are completed, the second end ring 9 is formed on the outer side of the second end plate 3, as shown in fig. 6, a third balancing column 10 corresponding to the position of the gate on the mold is formed on the second end ring 9, and as the aluminum liquid flows in from the first end plate 1 and flows out from the second end plate 3, and reaches the position of the second end ring 9, the gas is discharged outward in the direction opposite to the liquid casting by the self-weight action of the liquid, and finally can be discharged from the exhaust hole (channel), so that the mold corresponding to the molding position of the second end ring does not need to add an additional structure, and the third balancing column 10 corresponding to the gate structure is formed finally, and the use requirement can be met.

Claims

1. A cast aluminum rotor structure with improved forming quality comprises a rotor body (5) formed by laminating a plurality of rotor punching sheets and assembling ventilation groove plates, wherein a first end plate (1) and a second end plate (3) are respectively arranged at two ends of the rotor body (5), the structure of the second end plate (3) is the same as that of the rotor punching sheets, the cast aluminum rotor structure comprises annular punching sheets, a groove type (2) is formed on the outer circle of the circumference of each annular punching sheet, and ventilation holes (4) are formed in the inner circle of the groove type (2); a plurality of rotor punching sheets and ventilation holes (4) of the second end plate (3) form ventilation channels (51) extending along the axial direction in the rotor body (5), and the structure of the first end plate (1) is different from that of the rotor punching sheets, the structure of the first end plate comprises annular punching sheets, the outer ring of the circumference of the first end plate is provided with a groove type (2), and the inner ring of the first end plate is not provided with the ventilation holes (4) so as to form a closed structure (11); when the rotor body (5) is centrifugally poured through the groove type (2) of the first end plate (1), the closed structure (11) is used for preventing aluminum liquid from entering the ventilation channel (51).

2. The cast aluminum rotor structure with improved molding quality according to claim 1, wherein after centrifugal casting and completion of cast aluminum, a first end ring (6) is formed on the outer side of the first end plate (1), a first balance column (7) corresponding to the position of an inlet gate on a casting mold is formed on the first end ring (6), at least one circle of second balance column (8) is formed on the circumferential inner or outer ring of the first balance column (7), and the second balance column (8) corresponds to the position of an exhaust hole for exhaust during casting on the mold.

3. The cast aluminum rotor structure with improved molding quality according to claim 2, wherein the second balancing columns (8) are uniformly arranged in a circumferential direction.

4. The cast aluminum rotor structure with improved molding quality according to claim 2, wherein a second end ring (9) is formed on the outer side of the second end plate (3) after centrifugal casting and completion of cast aluminum, and a third balance post (10) corresponding to a gate position on a casting mold is formed on the second end ring (9).

5. The cast aluminium rotor structure with improved moulding quality according to claim 1, characterised in that the thickness of the first end plate (1) and the second end plate (3) are both 6 mm.