CN110538970A - casting device and casting process of aluminum-iron composite brake disc - Google Patents
casting device and casting process of aluminum-iron composite brake disc Download PDFInfo
- Publication number
- CN110538970A CN110538970A CN201910905516.3A CN201910905516A CN110538970A CN 110538970 A CN110538970 A CN 110538970A CN 201910905516 A CN201910905516 A CN 201910905516A CN 110538970 A CN110538970 A CN 110538970A
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- brake disc
- core
- hole
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- 238000005266 casting Methods 0.000 title claims abstract description 119
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000009423 ventilation Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/02—Sectional flasks, i.e. with divided, articulated, or interchangeable side sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
the invention discloses a casting device of an aluminum-iron composite brake disc, which comprises a lower box, an upper box matched with the lower box and a casting core inserted into a brake disc working ring, wherein the lower box is provided with a positioning groove used for accommodating the brake disc working ring and a positioning hole used for axially positioning the casting core, and the casting core comprises a ventilation hole core used for forming a ventilation hole of a brake disc casting and a positioning core embedded into the positioning hole. According to the casting device for the aluminum-iron composite brake disc, the lower box is axially inserted into the modular casting core, so that the processing requirement of the vent hole of the aluminum-iron composite brake disc can be met, the process cost is reduced, the processing precision is improved, and the brake disc can be ensured to have a good heat dissipation effect. The invention also provides a casting process of the aluminum-iron composite brake disc.
Description
Technical Field
The invention belongs to the technical field of vehicle braking systems, and particularly relates to a casting device of an aluminum-iron composite brake disc and a casting process of the aluminum-iron composite brake disc.
background
In order to reduce the oil consumption of the whole vehicle and improve the performance of the vehicle, aluminum-iron composite brake discs are increasingly adopted on the vehicle.
in the prior art, the vent holes of the aluminum-iron composite brake disc are all processed by adopting a disc side punching process, before processing, a brake disc blank is cast, and then vent holes are processed on the brake disc blank, so that the method has higher requirement on the precision of equipment and higher process cost; and the vent holes processed by adopting the disc side punching process are single in shape, so that the heat dissipation effect of the brake disc is poor.
Disclosure of Invention
the present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a casting device of an aluminum-iron composite brake disc, and aims to meet the processing requirement of the vent hole of the aluminum-iron composite brake disc, reduce the process cost and improve the processing precision.
in order to achieve the purpose, the invention adopts the technical scheme that: the casting device of the aluminum-iron composite brake disc comprises a lower box, an upper box matched with the lower box and a casting core inserted into a brake disc working ring, wherein the lower box is provided with a positioning groove used for accommodating the brake disc working ring and a positioning hole used for axially positioning the casting core, and the casting core comprises a ventilation hole core used for forming a ventilation hole of a brake disc casting and a positioning core embedded into the positioning hole.
the lower box comprises a lower tray, a lower side wall and an extending portion, wherein the lower side wall is arranged on the lower tray, the extending portion is arranged on the lower side wall, the positioning groove is arranged on the lower tray, the positioning hole is arranged in the extending portion, and the lower side wall is provided with a avoiding hole through which the positioning core penetrates.
The extension with the lower lateral wall is the loop configuration, lower lateral wall for set up perpendicularly in on the tray down, dodge the hole and set up a plurality ofly and all dodge the hole for along circumference evenly distributed under on the lateral wall, the quantity of locating hole with dodge the same and each locating hole of quantity in hole and dodge the hole with one respectively and be aligned with.
The positioning core comprises a first positioning part and a second positioning part which are connected, the first positioning part is connected with the ventilation hole core, the width of the first positioning part is smaller than that of the second positioning part, and the width of the second positioning part is larger than that of the avoidance hole.
the casting device of the aluminum-iron composite brake disc further comprises a positioning piece which is sleeved on the casting core and used for radially positioning the casting core, and the positioning piece is positioned on the outer side of the lower box.
The locating element is of a circular ring-shaped structure and coaxial with the extending part, the locating core is located between the locating element and the lower side wall, and the inner circular surface of the locating element is attached to the locating core.
The brake disc working ring comprises two brake rings and connecting columns which are arranged between the two brake rings and connected with the two brake rings, the connecting columns are arranged in a plurality of circles, and all the connecting columns in the same circle are uniformly distributed along the circumferential direction.
the invention also provides a casting process of the aluminum-iron composite brake disc, which adopts the casting device and comprises the following steps:
S1, manufacturing a casting device;
S2, pouring;
And S3, cooling, and taking out the brake disc casting.
The step S1 includes:
Positioning of the brake disc working ring: placing the brake disc working ring in a positioning groove of the lower box;
Inserting a casting core: the casting core penetrates through the lower box and is inserted into the brake disc working ring;
covering an upper box: assembling the upper box and the lower box together;
Radial pre-tightening of the casting core: and sleeving the positioning piece on the casting core, and radially pre-tightening the casting core by the positioning piece.
The casting process of the aluminum-iron composite brake disc further comprises the following steps: and S4, machining the brake disc casting.
According to the casting device for the aluminum-iron composite brake disc, the lower box is axially inserted into the modular casting core, so that the processing requirement of the vent hole of the aluminum-iron composite outer ventilation brake disc can be met, the process cost is reduced, the processing precision is improved, and the brake disc can be ensured to have a good heat dissipation effect; and the casting core adopts one-way location, and the end of the casting core does not need to be inserted into the flange surface of the brake disc, so that the bending rigidity of the brake disc can be greatly improved, and meanwhile, compared with an inner ventilation brake disc, the outer ventilation brake disc has the advantages of higher heat dissipation efficiency, smaller thermal deformation and the like.
drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a cross-sectional view of an apparatus for casting an aluminum-iron composite brake disc according to the present invention;
FIG. 2 is a cross-sectional view of a casting core;
FIG. 3 is a schematic view of the arrangement of casting cores;
FIG. 4 is a schematic view of the rotor ring;
FIG. 5 is a schematic view of a state of core insertion;
FIG. 6 is a schematic view of the upper case in a covered state;
FIG. 7 is a schematic view showing a state in which the clip is mounted;
FIG. 8 is a schematic view showing the installation state of the positioning member;
FIG. 9 is a schematic view of a molten aluminum casting state;
FIG. 10 is a cross-sectional view of the brake disc casting;
FIG. 11 is a cross-sectional view of a brake rotor;
Labeled as: 1. a vent hole core; 2. feeding the box; 3. a clamp; 4. a positioning core; 401. a first positioning portion; 402. a second positioning portion; 5. discharging the box; 501. a lower tray; 502. a lower sidewall; 503. an extension portion; 6. a brake disc operating ring; 601. a brake ring; 602. connecting columns; 7. a positioning member; 8. positioning holes; 9. air bleeding holes; 10. a pouring gate; 11. aluminum liquid; 12. avoiding holes; 13. a dish cap; 14. a first splice tray; 15. a second connecting disc; 16. a vent hole.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
As shown in fig. 1 to 3, the present invention provides an apparatus for casting an aluminum-iron composite brake disc, comprising a lower case 5, an upper case 2 fitted to the lower case 5, and a casting core for inserting into a brake disc operating ring 6, wherein the lower case 5 has positioning grooves for receiving the brake disc operating ring 6 and positioning holes 8 for axially positioning the casting core, the casting core includes a vent hole core 1 for forming vent holes of a brake disc casting and a positioning core 4 inserted into the positioning holes 8, and the casting core is provided in plurality.
specifically, as shown in fig. 1 and 3, the upper case 2 and the lower case 5 are both horizontally disposed, the upper case 2 is disposed above the lower case 5, the upper case 2 and the lower case 5 constitute a molding box, and a space is provided between the upper case 2 and the lower case 5, and the space partially forms a cavity for molding a brake disc casting. Upper box 2 is discoid structure, is provided with sprue gate 10 on the upper box 2, and the gas vent is vertical setting on upper box 2, and sprue gate 10 sets up on upper box 2's top surface and is located the center department of upper box 2's top surface, and sprue gate 10 is linked together with the die cavity. The air vent 9 is used for exhausting air in the die cavity in the casting process, and the air vent 9 is arranged at the outer edge of the upper box 2.
As shown in fig. 1 to 3, the lower box 5 includes a lower tray 501, a lower sidewall 502 disposed on the lower tray 501, and an extending portion 503 disposed on the lower sidewall 502, the positioning slot is disposed on the lower tray 501, the positioning hole 8 is disposed inside the extending portion 503, and the lower sidewall 502 is provided with an avoiding hole 12 for the positioning core 4 to pass through. The lower tray 501 is horizontally arranged and the lower tray 501 is of a disc-shaped structure, the lower side wall 502 is of a circular ring-shaped structure and is vertically arranged on the lower tray 501, the lower side wall 502 and the lower tray 501 are coaxially arranged, the lower side wall 502 is fixedly connected with the lower tray 501 at the outer edge of the lower tray 501, the lower side wall 502 extends towards the upper part of the lower tray 501, the inner diameter of the lower side wall 502 is smaller than the outer diameter of the upper box 2, when the brake disc working ring 6 is arranged in the cavity, the brake disc working ring 6 is positioned between the upper box 2 and the lower tray 501, and the brake disc working ring 6 is coaxial with the upper box 2, the lower tray 501 and the lower side wall 502. The circular recess of constant head tank for setting up at tray 501's top surface down, the diameter of constant head tank is the same with the outside diameter size of brake disc working ring 6 and the diameter of constant head tank is less than the internal diameter of lateral wall 502 down, and the constant head tank is coaxial with lower lateral wall 502, and brake disc working ring 6 is the horizontality and places in the constant head tank, ensures that the position is accurate.
As shown in fig. 1 to fig. 3, the extending portion 503 is also a circular ring structure, the extending portion 503 extends toward the outside of the lower sidewall 502 along the radial direction of the lower sidewall 502, the extending portion 503 is fixedly connected to the outer circumferential surface of the lower sidewall 502, the extending portion 503 is coaxial with the lower sidewall 502, the avoiding hole 12 is a through hole that is formed in the lower sidewall 502 and penetrates in the radial direction of the lower sidewall 502, when a core is not inserted, the avoiding hole 12 is communicated with the cavity, the avoiding hole 12 is provided with a plurality of avoiding holes 12, all the avoiding holes 12 are uniformly distributed in the circumferential direction on the lower sidewall 502, and each core passes through one avoiding hole 12 and then is inserted into the cavity. The number of the positioning holes 8 on the extension portion 503 is also multiple, the number of the positioning holes 8 is the same as the number of the avoidance holes 12, each positioning hole 8 is aligned with one avoidance hole 12, and the positioning holes 8 are communicated with the avoidance holes 12. All the positioning holes 8 are uniformly distributed on the extension part 503 along the circumferential direction, the positioning holes 8 form an opening for the casting core to pass through on the outer circular surface of the extension part 503, the outer circular surface of the extension part 503 is a cylindrical surface, the outer circular surface of the extension part 503 is the surface of the maximum diameter part of the extension part 503, and the shape of the positioning holes 8 is matched with the shape of the positioning core 4. When the casting core is installed, the casting core sequentially penetrates through the positioning hole 8 and the avoidance hole 12 and then is inserted into the brake disc working ring 6, and finally the positioning core 4 is inserted into the positioning hole 8, and the ventilation hole core 1 is inserted into the brake disc working ring 6. The shape of the vent hole core 1 is the same as that of a vent hole formed in a brake disc casting.
As shown in fig. 1 to 3, the positioning core 4 includes a first positioning portion 401 and a second positioning portion 402 connected to each other, the first positioning portion 401 is connected to the vent hole core 1, the width of the first positioning portion 401 is smaller than the width of the second positioning portion 402, the width of the second positioning portion 402 is larger than the width of the avoidance hole 12, the width direction of the first positioning portion 401 is parallel to the width of the second positioning portion 402, the width directions of the first positioning portion 401 and the second positioning portion 402 are perpendicular to the axis of the extension portion 503 and the axis of the vent hole core 1, the width of the first positioning portion 401 is substantially equal to the width of the avoidance hole 12, so that the lower side wall 502 can limit the core in the radial direction, control the insertion depth of the core, and the second positioning portion 402 is located in the positioning hole 8 to achieve axial positioning. One end of the first positioning portion 401 is fixedly connected to the second positioning portion 402 at a middle position in the width direction of the second positioning portion 402, and the other end of the first positioning portion 401 is fixedly connected to the vent core 1. The vent hole core 1 has a certain length, the vent hole core 1 is inserted into the brake disc working ring 6 along the radial direction of the brake disc working ring 6, the length direction of the vent hole core 1 is parallel to the radial direction of the brake disc working ring 6, in the present embodiment, the width of the vent core 1 is gradually reduced along the length direction thereof, the width direction of the vent core 1 is parallel to the width direction of the first positioning portion 401 and the second positioning portion 402, the width direction of the vent core 1 is perpendicular to the length direction thereof, that is, the vent core 1 has a large end and a small end, the width of the large end of the vent core 1 is greater than the width of the small end, the large end of the vent core 1 is fixedly connected to the first positioning portion 401, the width of the large end of the vent core 1 is the same as the width of the first positioning portion 401, the small end of the vent core 1 is far away from the first positioning portion 401, and the vent holes formed on the brake disc casting extend in the radial direction.
The cast core of above-mentioned structure, the sectional area adopts the big design in front and back, can reduce the quantity of cast aluminium as far as possible to provide great heat radiating area, simultaneously, the cast core adopts the design that the preceding is thin thick after the design both can improve the intensity between brake disc flange and the working ring, and the ventilation hole of curved surface transition simultaneously can reduce air inlet resistance, improves air inlet efficiency.
As shown in fig. 1 to 3, the casting apparatus for an al-fe composite brake disc of the present invention further includes a positioning member 7 sleeved on the casting core and used for radially positioning the casting core, wherein the positioning member 7 is located outside the lower box 5. The positioning member 7 is a circular ring structure, the positioning member 7 is coaxial with the extension 503, the positioning core 4 is located between the positioning member 7 and the lower sidewall 502, and the inner circular surface of the positioning member 7 is attached to the positioning core 4. After the casting cores are installed, all the casting cores are uniformly distributed on the lower box 5 along the circumferential direction by taking the axis of the lower box 5 as a central line, and then the positioning pieces 7 are sleeved on all the casting cores; in order to facilitate the insertion of the positioning element 7 into the lower box 5, a front section of the positioning element 7 is provided with a chamfer so that an inner circular surface of the positioning element 7 is attached to an outer wall surface of the second positioning portion 402, the outer wall surface of the second positioning portion 402 is an arc surface and the outer wall surface of the second positioning portion 402 is coaxial with an outer circular surface of the lower side wall 502, the outer wall surface of the second positioning portion 402 is an end surface of one end of the second positioning portion 402, which is far away from the first positioning portion 401, and the end of the second positioning portion 402 is located outside the positioning hole 8, so that the outer wall surface of the second positioning portion 402 is also located outside the positioning hole 8, and the diameter of the outer wall surface of the second positioning portion 402 is the same as the inner. The positioning piece 7 has a limiting effect on all the casting cores in the radial direction, so that the positioning cores 4 are clamped between the positioning piece 7 and the lower side wall 502, all the casting cores are fixed on the lower box 5, the positioning mode is simple, the operation is convenient, and the processing precision is improved.
As shown in fig. 1 to 4, the brake disc working ring 6 includes two brake rings 601 and connecting columns 602 located between the two brake rings 601 and connected to the two brake rings 601, the connecting columns 602 are arranged in a plurality of circles, and all the connecting columns 602 in the same circle are uniformly distributed along the circumferential direction. The brake rings 601 are of a circular ring structure, the two brake rings 601 are coaxially arranged, the two brake rings 601 are fixedly connected with the connecting column 602 into a whole, the connecting column 602 has a certain length, the length direction of the connecting column 602 is parallel to the axis of the brake rings 601, the two brake rings 601 and the connecting column 602 are integrally cast, and the brake rings 601 are used for being in contact with a brake pad of a brake caliper assembly to generate braking force. All the connecting columns 602 are arranged in a plurality of rows between the two brake rings 601, and all the connecting columns 602 in the same row are arranged in sequence along the radial direction of the brake rings 601.
The casting device of above-mentioned structure adopts the 5 axial casting modes of interlude modularization casting cores of nowel, can satisfy the ventilation hole processing requirement of aluminium iron composite brake disc, can reduce process cost, improves the machining precision, and the drawing of patterns is convenient, repeatedly usable to can ensure that the brake disc has better radiating effect.
The invention also provides a casting process of the aluminum-iron composite brake disc, which adopts the casting device with the structure and comprises the following steps:
S1, manufacturing a casting device;
S2, pouring;
And S3, cooling, and taking out the brake disc casting.
the step S1 includes:
S101, positioning of the brake disc working ring 6: placing the brake disc working ring 6 in the positioning groove of the lower box 5;
S102, inserting a casting core: the casting core is inserted through the lower box 5 and into the brake disc operating ring 6;
S103, covering the upper box 2: assembling the upper case 2 and the lower case 5 together;
s104, radially pre-tightening the casting core: and sleeving the positioning piece 7 on the casting core, and radially pre-tightening the casting core by the positioning piece 7.
In step S101, as shown in fig. 4, the lower case 5 is horizontally placed, the brake disc operating ring 6 is horizontally placed in the positioning groove of the lower case 5, and the positioning groove positions the brake disc operating ring 6 so that the brake disc operating ring 6 and the lower case 5 are coaxial.
in the step S102, as shown in fig. 5, the casting cores are sequentially inserted into the brake disc operating ring 6 after passing through the positioning holes 8 and the avoiding holes 12 of the lower case 5, the lower case 5 realizes axial positioning of the casting cores, the vent core 1 is inserted between the two brake rings 601, and the vent core 1 of each casting core is located between every two adjacent columns of the connecting columns 602 in the circumferential direction, so that a vent hole can be formed between every two adjacent columns of the connecting columns 602 in the circumferential direction. The length of the vent hole core 1 is larger than the width of the brake ring 601, the width of the brake ring 601 refers to the vertical distance between the inner circle surface of the brake ring 601 and the outer circle surface of the brake ring 601, the inner circle surface and the outer circle surface of the brake ring 601 are cylindrical surfaces which are coaxially arranged, the inner circle surface of the brake ring 601 is the inner diameter part of the brake ring 601, the outer circle surface of the brake ring 601 is the outer diameter part of the brake ring 601, the vertical distance between the small end part of the vent hole core 1 and the axis of the lower box 5 is smaller than the vertical distance between the inner circle surface of the brake ring 601 and the axis of the lower box 5, and the small end part of the vent hole core 1 penetrates through the brake disc working ring 6 and then is.
in step S103, as shown in fig. 6, the upper case 2 is placed on the lower case 5, and the upper case 2 covers the brake disc operating ring 6.
In step S104, as shown in fig. 8, after all the cores are installed, all the cores are uniformly distributed on the lower box 5 along the circumferential direction with the axis of the lower box 5 as the center line, and then the positioning members 7 are fitted over all the cores so that the inner circular surfaces of the positioning members 7 are attached to the outer wall surfaces of the second positioning portions 402, thereby achieving radial positioning of the cores, and fixing all the cores on the lower box 5.
The step S1 further includes:
S105, positioning a clamp: and (3) mounting a clamp to ensure the stability of the upper box 2 and the lower box 5 in the casting process.
In the above step S105, as shown in fig. 7, the upper case 2 and the lower case 5 are clamped by using a jig, the structure of which is well known to those skilled in the art and will not be described herein.
after step S1 is completed, casting is performed, and as shown in fig. 9, in step S2, the molten metal is molten aluminum formed by melting cast aluminum material. The aluminum liquid is poured from a pouring gate 10, and the air vent 9 is used for exhausting air in the mold in the casting process.
In the above step S2, the molten aluminum fills the cavity, and the filtrate flows into the gap between the core and the brake disc operating ring 6 and the gap between every two adjacent connecting studs 602 of the brake disc operating ring 6. A brake disc body casting is formed by casting, which is combined with the brake disc working ring 6 to form a brake disc casting.
After completion of step S2, in step S3, the casting is cooled on line, the upper case 2 and the lower case 5 are separated after cooling, the brake disc casting is taken out, and the core is recovered.
As shown in fig. 10, the brake disc casting includes a brake disc operating ring 6, a disc cap 13, and a first connecting disc 14 and a second connecting disc 15 fixedly connected to the disc cap 13, the disc cap 13 is a disc-shaped structure, the first connecting disc 14 and the second connecting disc 15 are both circular ring-shaped structures, the disc cap 13 is located at the center of the first connecting disc 14 and the second connecting disc 15, the disc cap 13 is coaxial with the first connecting disc 14, the second connecting disc 15 and the brake disc operating ring 6, the first connecting disc 14 and the second connecting disc 15 are sequentially arranged along the axial direction of the disc cap 13, the first connecting disc 14 and the second connecting disc 15 are fixedly connected to the brake disc operating ring 6, the first connecting disc 14 and the second connecting disc 15 are located in the center hole of the brake disc operating ring 6, the inner edge of the first connecting disc 14 is fixedly connected to the outer circumferential surface of the disc cap 13, the outer edge of the first connecting disc 14 is fixedly connected to the inner circumferential surface of one brake ring 601, the inner edge of the second connecting disc 15 is fixedly connected with the outer circular surface of the disc cap 13, the outer edge of the second connecting disc 15 is fixedly connected with the inner circular surface of the other brake ring 601, a vent hole is formed to extend from the outer circular surface of the brake disc casting to the disc cap 13 along the radial direction, the vent hole is positioned between the first connecting disc 14 and the second connecting disc 15, the vent hole forms an opening on the outer circular surface of the brake disc casting, namely the first end of the vent hole is in an open state, but the second end of the vent hole is closed by the disc cap 13, the first connecting disc 14 and the second connecting disc 15, the first end and the second end of the vent hole are opposite ends in the length direction of the vent hole, and the outer circular surface of the brake disc casting is the.
the casting process of the aluminum-iron composite brake disc further comprises the following steps: and S4, machining the brake disc casting.
In the above step S4, the brake disc casting needs to be further processed to remove the first connecting disc 14 of the brake disc casting, the disc cap 13 is connected to the brake disc working ring 6 only through the second connecting disc 15, the second end of the vent hole is exposed to enable the second end of the vent hole to be directly communicated with the external environment, the second ends of the disc cap 13 and the vent hole are located on the same side of the second connecting disc 15, and the finally formed brake disc can have a good heat dissipation effect.
the invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (10)
1. The casting device of the aluminum-iron composite brake disc is characterized by comprising a lower box, an upper box matched with the lower box and a casting core inserted into a brake disc working ring, wherein the lower box is provided with a positioning groove used for accommodating the brake disc working ring and a positioning hole used for axially positioning the casting core, and the casting core comprises a ventilation hole core used for forming a ventilation hole of a brake disc casting and a positioning core embedded into the positioning hole.
2. the device for casting the aluminum-iron composite brake disc as claimed in claim 1, wherein the lower box comprises a lower tray, a lower side wall disposed on the lower tray, and an extending portion disposed on the lower side wall, the positioning groove is disposed on the lower tray, the positioning hole is disposed inside the extending portion, and an avoiding hole for the positioning core to pass through is disposed on the lower side wall.
3. The device for casting the aluminum-iron composite brake disc as claimed in claim 2, wherein the extension portion and the lower side wall are both circular ring structures, the lower side wall is vertically arranged on the lower tray, the avoiding holes are arranged in a plurality and all the avoiding holes are uniformly distributed on the lower side wall along the circumferential direction, the number of the positioning holes is the same as the number of the avoiding holes, and each positioning hole is respectively aligned with one avoiding hole.
4. the device for casting the aluminum-iron composite brake disc as claimed in claim 2 or 3, wherein the positioning core comprises a first positioning portion and a second positioning portion which are connected, the first positioning portion is connected with the vent hole core, the width of the first positioning portion is smaller than that of the second positioning portion, and the width of the second positioning portion is larger than that of the avoiding hole.
5. The device for casting the al-fe composite brake disc as claimed in any one of claims 2 to 4, further comprising a positioning member sleeved on the casting core and used for radially positioning the casting core, wherein the positioning member is located outside the lower box.
6. The apparatus of claim 5, wherein the positioning element is a circular ring and is coaxial with the extension, the positioning core is located between the positioning element and the lower sidewall, and an inner circular surface of the positioning element is attached to the positioning core.
7. The apparatus for casting an al-fe composite brake disc as claimed in any one of claims 1 to 6, wherein the brake disc operating ring includes two brake rings and connecting columns located between and connected to the two brake rings, the connecting columns are arranged in a plurality of circles, and all the connecting columns in the same circle are uniformly distributed along the circumferential direction.
8. casting process of an al-fe composite brake disc, characterized in that a casting device according to any one of claims 1 to 7 is used and comprises the steps of:
S1, manufacturing a casting device;
S2, pouring;
and S3, cooling, and taking out the brake disc casting.
9. The process for casting an al-fe composite brake disc as claimed in claim 8, wherein the step S1 includes:
positioning of the brake disc working ring: placing the brake disc working ring in a positioning groove of the lower box;
inserting a casting core: the casting core penetrates through the lower box and is inserted into the brake disc working ring;
covering an upper box: assembling the upper box and the lower box together;
Radial pre-tightening of the casting core: and sleeving the positioning piece on the casting core, and radially pre-tightening the casting core by the positioning piece.
10. A casting process of an al-fe composite brake disc according to claim 8 or 9, further comprising the steps of:
And S4, machining the brake disc casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905516.3A CN110538970A (en) | 2019-09-24 | 2019-09-24 | casting device and casting process of aluminum-iron composite brake disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905516.3A CN110538970A (en) | 2019-09-24 | 2019-09-24 | casting device and casting process of aluminum-iron composite brake disc |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227903A (en) * | 2021-12-30 | 2022-03-25 | 罗海金 | Automatic inserting equipment for ventilating aluminum core of carbon ceramic brake disc |
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| US6321885B1 (en) * | 1996-12-02 | 2001-11-27 | Florian Wendt | Composite cast brake elements, such as brake drum, brake disk or the like, and composite casting process for brake elements |
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| CN114227903A (en) * | 2021-12-30 | 2022-03-25 | 罗海金 | Automatic inserting equipment for ventilating aluminum core of carbon ceramic brake disc |
| CN114227903B (en) * | 2021-12-30 | 2023-12-26 | 罗海金 | Automatic insertion equipment for ventilation aluminum core of carbon ceramic brake disc |
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