CN110773702A - Casting die for brake disc blank precoated sand core box and grinding wheel manufacturing process - Google Patents
Casting die for brake disc blank precoated sand core box and grinding wheel manufacturing process Download PDFInfo
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- CN110773702A CN110773702A CN201911065200.4A CN201911065200A CN110773702A CN 110773702 A CN110773702 A CN 110773702A CN 201911065200 A CN201911065200 A CN 201911065200A CN 110773702 A CN110773702 A CN 110773702A
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- Prior art keywords
- sand
- brake disc
- heating pipe
- sand core
- die
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- 238000005266 casting Methods 0.000 title claims abstract description 20
- 238000000227 grinding Methods 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 239000004576 sand Substances 0.000 claims abstract description 42
- 210000003128 head Anatomy 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 210000002489 tectorial membrane Anatomy 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
- B22C7/065—Venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
-
- 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
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a casting die for a brake disc blank precoated sand core box, which comprises an upper die, wherein a lower die is arranged at the bottom of the upper die, a sand shooting head is arranged at the center of the upper die, a sand shooting nozzle is arranged at the center of the sand shooting head, a sand core is connected to the bottom of the sand shooting head, the sand core is arranged at the center of the top of the lower die, a first heating pipe is fixed on the side of the upper die, and a second heating pipe is fixed on the side of the lower die; be provided with first heating pipe and second heating pipe, and first heating pipe and second heating pipe are about the central axis angular distribution such as last mould and bed die respectively to the fashioned quality of psammitolite has been guaranteed in the inside of last mould and bed die to the heat that first heating pipe and second heating pipe produced can even distribution, and first heating pipe and second heating pipe can be with the gas escape of the inside of last mould and bed die simultaneously.
Description
Technical Field
The invention belongs to the technical field of molds, and particularly relates to a casting mold of a brake disc blank precoated sand core box and a grinding wheel manufacturing process.
Background
The disc brake is a brake device which uses a static brake disc to clamp the brake disc rotating along with the upper tire of the wheel to generate friction force so as to reduce the rotating speed of the wheel. When the brake pedal is depressed, a piston in the master cylinder is pushed to build up pressure in the brake fluid path. The pressure is transmitted to the piston of the wheel cylinder on the brake caliper through the brake oil, and the piston of the wheel cylinder can move outwards and push the brake pad to clamp the brake disc after being pressurized, so that the brake pad and the brake disc are rubbed to reduce the rotating speed of the wheel, and the automobile can be well decelerated or stopped.
The heat dissipation of the disc brake is better than that of the drum brake, and the phenomenon that the brake is declined to cause brake failure is avoided when the brake is continuously stepped; the thermal expansion of the brake disc along the thickness direction is extremely small, and the change of the size after heating does not increase the stroke of stepping on the brake pedal; the disc type brake system has quick response and can perform high-frequency brake action, thereby meeting the requirements of an ABS system; the disc brake has no friction boosting function of drum brake, so that the brake force of the left wheel and the right wheel is relatively average; the brake disc has better drainage, so that the situation of poor braking caused by water or silt can be reduced; compared with a drum brake, the disc brake has simple structure, easy realization of automatic gap adjustment and easy maintenance. The size and mass of the brake are small compared to the drum brake for the same output brake torque.
However, the existing brake disc blank twin sand core box casting mould is poor in air permeability, not uniform in heating, and of a square mould structure, so that the used materials are more, and the weight is heavier.
The present case is mainly to sand car dish psammitolite mould of taking heat dissipation ventilation groove
Disclosure of Invention
The invention aims to provide a brake disc coated sand core box die and a grinding wheel manufacturing process, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a brake disc blank resin sand core box casting mould, includes the mould, the bed die is installed to the bottom of going up the mould, the center department of going up the mould installs and penetrates the sand head, penetrates the sand head center and be for penetrating the sand mouth, and its bottom is connected with the psammitolite, the psammitolite is installed in the center department at bed die top, the avris of going up the mould is fixed with first heating pipe, the avris of bed die is fixed with the second heating pipe.
Preferably, the upper die and the lower die are both designed to be circular structures, and the diameters of the upper die and the lower die are the same.
Preferably, the central axis of the sand shooting head and the central axis of the sand shooting nozzle coincide with each other, and the central axis of the sand shooting head and the central axis of the upper die coincide with each other.
Preferably, the center of the sand core is overlapped with the projection of the sand shooting nozzle, and the sand core is a typical brake disc front disc structure with a heat dissipation groove.
Preferably, the first heating pipes are distributed at equal angles about the central axis of the upper die, and the first heating pipes are in plug-in contact connection with the upper die.
Preferably, the second heating pipes are distributed at equal angles about the central axis of the lower die, and the second heating pipes are connected with the lower die in an insertion-type contact manner.
A grinding wheel manufacturing process comprises the following steps:
the method comprises the following steps:
the method comprises the following steps: using precoated sand as a production raw material of the sand core;
step two: adopting three-screen or four-screen sand with 50-100 or 70-140 meshes, mixing the materials to prepare a resin self-hardening sand mold, reducing the casting temperature by 5% through a casting simulation experiment, and then demoulding and drying to obtain a grinding wheel blank;
step three: and heating and sintering the mold by using the thermocouple heating pipe, and shaping the heated and sintered sand core finished product to obtain the brake disc grinding wheel.
Compared with the prior art, the invention has the beneficial effects that:
1. be provided with first heating pipe and second heating pipe, and first heating pipe and second heating pipe are about the central axis angular distribution such as last mould and bed die respectively, thereby the heat that first heating pipe and second heating pipe produced can even distribution in the inside of last mould and bed die, the fashioned quality of psammitolite has been guaranteed, simultaneously first heating pipe and second heating pipe can be with the gas outgoing of the inside of last mould and bed die, 0.1MM clearance is left in die joint department, thereby it is better to make the psammitolite fill type process exhaust effect.
2. Be provided with mould and bed die, and go up mould and bed die and be circular design to replace traditional cubic mould structure, the mould material uses more sparingly, and mould weight is lighter, makes the production psammitolite production heating energy consumption more sparingly.
3. By adopting a central sand shooting scheme, the sand shooting nozzle is short and small, and the process yield of the sand core is more than 95 percent.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the installation structure of the sand shooting head of FIG. 1 according to the present invention;
FIG. 3 is a schematic top view of FIG. 2 according to the present invention;
in the figure: 1. an upper die; 2. a lower die; 3. a sand shooting head; 4. a sand core; 5. a sand shooting nozzle; 6. a first heating pipe; 7. a second heating pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a brake disc blank tectorial membrane core box casting mould, includes mould 1, and lower mould 2 is installed to the bottom of mould 1, goes up the center department of mould 1 and installs and penetrate sand head 3, penetrates sand head center and be sand shooting mouth 5, and its bottom is connected with psammitolite 4, and psammitolite 4 is installed in the center department at 2 tops of lower mould, and the avris of going up mould 1 is fixed with first heating pipe 6, and the avris of lower mould 2 is fixed with second heating pipe 7.
In this embodiment, it is preferable that the upper mold 1 and the lower mold 2 are both designed to have a circular structure, and the diameters of the upper mold 1 and the lower mold 2 are the same.
In this embodiment, it is preferable that the center axis of the sand shooting head 3 and the center axis of the sand shooting nozzle 5 coincide with each other, and the center axis of the sand shooting head 3 and the center axis of the upper mold 1 coincide with each other.
In this embodiment, preferably, the center of the sand core 4 and the projection of the sand shooting nozzle 5 coincide with each other, and the sand core 4 is a typical brake disc front disc structure with a heat dissipation groove.
In this embodiment, preferably, the first heating pipes 6 are distributed at equal angles with respect to the central axis of the upper mold 1, and the first heating pipes 6 are connected with the upper mold 1 in an insertion contact manner.
In the present embodiment, the second heating pipes 7 are preferably distributed at equal angles with respect to the central axis of the lower mold 2, and the second heating pipes 7 are connected to the lower mold 2 in an insertion-type contact manner.
A grinding wheel manufacturing process comprises the following steps:
the method comprises the following steps: the precoated sand is used as a raw material for producing the sand core.
Step two: adopting three-screen or four-screen sand with 50-100 or 70-140 meshes, mixing the materials to prepare a resin self-hardening sand mold, reducing the casting temperature by 5% through a casting simulation experiment, and then demoulding and drying to obtain a grinding wheel blank;
step three: and heating and sintering the mold by using the thermocouple heating pipe, and shaping the heated and sintered sand core finished product to obtain the brake disc grinding wheel.
The working principle and the using process of the invention are as follows: when the device is used, firstly, three screens or four screens of sand are adopted, 50-100 or 70-140 meshes are adopted, resin self-hardening sand molds are prepared by mixing, through a pouring simulation experiment, the pouring temperature is reduced by 5%, so that better casting surface quality is obtained, the quality of a product is improved, heat generated by the first heating pipe 6 and the second heating pipe 7 can be uniformly distributed in the upper mold 1 and the lower mold 2, the quality of mold forming is ensured, the upper mold 1 and the lower mold 2 are arranged simultaneously, and the upper mold 1 and the lower mold 2 are designed in a circular shape, so that a traditional square mold structure is replaced, the use of mold materials is saved, the weight of the mold is lighter, and the energy consumption for producing sand cores 4 is saved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a brake disc blank tectorial membrane core box casting mould, includes mould (1), its characterized in that: the bottom of going up mould (1) installs bed die (2), the center department of going up mould (1) installs sand shooting head (3), and sand shooting head center is sand shooting mouth (5), and its bottom is connected with psammitolite (4), the center department at bed die (2) top is installed in psammitolite (4), the avris of going up mould (1) is fixed with first heating pipe (6), the avris of bed die (2) is fixed with second heating pipe (7).
2. The brake disc blank precoated sand core box casting mold according to claim 1, characterized in that: the upper die (1) and the lower die (2) are both designed to be circular structures, and the diameters of the upper die (1) and the lower die (2) are the same.
3. The brake disc blank precoated sand core box casting mold according to claim 1, characterized in that: the central axis of the sand shooting head (3) is coincided with the central axis of the sand shooting nozzle (5), and the central axis of the sand shooting head (3) is coincided with the central axis of the upper die (1).
4. The brake disc blank precoated sand core box casting mold according to claim 1, characterized in that: the center of the sand core (4) is superposed with the projection of the sand shooting nozzle (5), and the sand core (4) is a typical brake disc front disc structure with a heat dissipation groove.
5. The brake disc blank precoated sand core box casting mold according to claim 1, characterized in that: the first heating pipes (6) are distributed in an equal angle mode about the central axis of the upper die (1), and the first heating pipes (6) are in plug-in contact connection with the upper die (1).
6. The brake disc blank precoated sand core box casting mold according to claim 1, characterized in that: the second heating pipes (7) are distributed in an equal angle mode about the central axis of the lower die (2), and the second heating pipes (7) are in plug-in contact connection with the lower die (2).
7. A process for manufacturing a grinding wheel according to claim 1, characterized in that: the method comprises the following steps:
the method comprises the following steps: the precoated sand is used as a raw material for producing the sand core.
Step two: three screens or four screens of sand are used. 50-100 or 70-140 meshes, the resin self-hardening sand mold prepared by mixing the materials is subjected to a casting simulation experiment, the casting temperature is reduced by 5%, and then the mold is released and dried to obtain a grinding wheel blank;
step three: and heating and sintering the mold by using the thermocouple heating pipe, and shaping the heated and sintered sand core finished product to obtain the brake disc grinding wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065200.4A CN110773702B (en) | 2019-11-04 | 2019-11-04 | Brake disc blank tectorial membrane sand core box casting mould and grinding wheel manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065200.4A CN110773702B (en) | 2019-11-04 | 2019-11-04 | Brake disc blank tectorial membrane sand core box casting mould and grinding wheel manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110773702A true CN110773702A (en) | 2020-02-11 |
| CN110773702B CN110773702B (en) | 2024-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911065200.4A Active CN110773702B (en) | 2019-11-04 | 2019-11-04 | Brake disc blank tectorial membrane sand core box casting mould and grinding wheel manufacturing process |
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| Country | Link |
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| CN (1) | CN110773702B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673630A (en) * | 2020-06-22 | 2020-09-18 | 芜湖市华峰砂轮有限公司 | Grinding wheel forming die with T-shaped flange nut |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2314428A1 (en) * | 1999-07-28 | 2001-01-28 | Ronald Gustafson | Method for machining sand block into sand molding elements including sand molds and sand cores for metal casting foundry operations |
| JP2001207245A (en) * | 2000-01-27 | 2001-07-31 | Mazda Motor Corp | Method of composing porous member, and composite member |
| CN102107261A (en) * | 2009-12-23 | 2011-06-29 | 天津市盛兴祥机械制造有限公司 | Production technology for casting brake disk air channel with pre-coated sand core method |
| CN103769535A (en) * | 2014-01-21 | 2014-05-07 | 浙江今飞凯达轮毂股份有限公司 | Sand core mold, manufacturing method of sand core, and sand core |
| CN105665651A (en) * | 2016-04-11 | 2016-06-15 | 杨朝平 | Flywheel casting mold |
| CN206882703U (en) * | 2017-06-26 | 2018-01-16 | 禹州市昆仑模具有限公司 | A kind of hot core box mould of two-sided sheave |
| CN109719255A (en) * | 2018-10-29 | 2019-05-07 | 扬州广润机械有限公司 | A kind of flywheel shell of engine tide mould sand build-in function film covered sand core casting technique |
| CN109865800A (en) * | 2019-01-31 | 2019-06-11 | 重庆长安汽车股份有限公司 | A kind of analog analysing method of hot box precoated sand heat curing process |
| CN211191875U (en) * | 2019-11-04 | 2020-08-07 | 金华浩翔汽配有限公司 | A brake disc blank coated sand core box casting mold |
-
2019
- 2019-11-04 CN CN201911065200.4A patent/CN110773702B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2314428A1 (en) * | 1999-07-28 | 2001-01-28 | Ronald Gustafson | Method for machining sand block into sand molding elements including sand molds and sand cores for metal casting foundry operations |
| JP2001207245A (en) * | 2000-01-27 | 2001-07-31 | Mazda Motor Corp | Method of composing porous member, and composite member |
| CN102107261A (en) * | 2009-12-23 | 2011-06-29 | 天津市盛兴祥机械制造有限公司 | Production technology for casting brake disk air channel with pre-coated sand core method |
| CN103769535A (en) * | 2014-01-21 | 2014-05-07 | 浙江今飞凯达轮毂股份有限公司 | Sand core mold, manufacturing method of sand core, and sand core |
| CN105665651A (en) * | 2016-04-11 | 2016-06-15 | 杨朝平 | Flywheel casting mold |
| CN206882703U (en) * | 2017-06-26 | 2018-01-16 | 禹州市昆仑模具有限公司 | A kind of hot core box mould of two-sided sheave |
| CN109719255A (en) * | 2018-10-29 | 2019-05-07 | 扬州广润机械有限公司 | A kind of flywheel shell of engine tide mould sand build-in function film covered sand core casting technique |
| CN109865800A (en) * | 2019-01-31 | 2019-06-11 | 重庆长安汽车股份有限公司 | A kind of analog analysing method of hot box precoated sand heat curing process |
| CN211191875U (en) * | 2019-11-04 | 2020-08-07 | 金华浩翔汽配有限公司 | A brake disc blank coated sand core box casting mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673630A (en) * | 2020-06-22 | 2020-09-18 | 芜湖市华峰砂轮有限公司 | Grinding wheel forming die with T-shaped flange nut |
| CN111673630B (en) * | 2020-06-22 | 2021-09-21 | 芜湖市华峰砂轮有限公司 | Grinding wheel forming die with T-shaped flange nut |
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| Publication number | Publication date |
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| CN110773702B (en) | 2024-07-02 |
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