CN216542808U - Grinding wheel block forming and manufacturing die with good uniformity - Google Patents
Grinding wheel block forming and manufacturing die with good uniformity Download PDFInfo
- Publication number
- CN216542808U CN216542808U CN202123009471.3U CN202123009471U CN216542808U CN 216542808 U CN216542808 U CN 216542808U CN 202123009471 U CN202123009471 U CN 202123009471U CN 216542808 U CN216542808 U CN 216542808U
- Authority
- CN
- China
- Prior art keywords
- pressure head
- grinding wheel
- main pressure
- auxiliary pressure
- gasket
- 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.)
- Active
Links
Images
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The utility model discloses a grinding wheel block molding preparation die with good uniformity, which comprises a die cavity, a main pressure head, an auxiliary pressure head and a gasket, wherein the main pressure head and the auxiliary pressure head can be cylindrical or regular hexagonal prism-shaped, the main pressure head comprises an upper main pressure head and a lower main pressure head, and the auxiliary pressure head comprises an upper auxiliary pressure head and a lower auxiliary pressure head. The ceramic bond grinding wheel is pressed by adopting the main pressure head and the auxiliary pressure head, the density distribution of the middle part and two ends of the manufactured grinding wheel block is uniform, the multiple layers are tightly combined after sintering, and the grinding wheel has no cracks. After sintering, the main layer and the auxiliary layer of the grinding wheel are tightly combined, and the grinding wheel has no crack.
Description
Technical Field
The utility model relates to a grinding wheel block forming and manufacturing die with good uniformity, and belongs to the technical field of superhard grinding wheel manufacturing.
Background
In the prior art, the preparation process of the superhard ceramic bond grinding wheel generally comprises the steps of firstly performing cold press molding on the superhard ceramic bond grinding wheel by using a die to form a quick grinding wheel blank body, then placing the quick grinding wheel blank body into an electric furnace to perform high-temperature sintering to form a mature blank, wherein the sintering temperature is generally 700-1100 ℃. In the blank body press forming process, pressure heads at two ends of the die have certain pressure gradient change, and the thicker the blank body is, the larger the pressure gradient difference is, so that the compactness of the middle part of the blank body is influenced. Uneven forming density at the two ends and the middle part of the blank easily causes uneven abrasion of the grinding wheel, the condition of fast loss at the middle position of the grinding wheel occurs, and the condition of fast deformation of the grinding wheel easily occurs when the end face grinding wheel is used to the middle part.
In view of the above, it is obviously of positive significance to develop a new mold for forming and preparing a multilayer grinding wheel block, and to solve the problem of uneven density distribution in the middle and at both ends of a thick superhard grinding wheel in the prior art.
Disclosure of Invention
The utility model aims to overcome the existing defects and provide a grinding wheel block forming and preparing die with good uniformity, the density distribution of the manufactured grinding wheel is more uniform, the hardness of each layer is close to be consistent, the multiple layers of grinding wheels are tightly combined after sintering, the grinding wheels have no cracks, the grinding efficiency of the surface layer of the grinding wheel and the grinding efficiency of the middle position are consistent through grinding tests, and the grinding wheel loss at different thicknesses is consistent, so that the problems in the background technology can be effectively solved.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: a grinding wheel block molding preparation mold with good uniformity comprises a mold cavity, a main pressure head, an auxiliary pressure head and a gasket; the main pressure head comprises an upper main pressure head and a lower main pressure head; the auxiliary pressure head comprises an upper auxiliary pressure head and a lower auxiliary pressure head; the gasket comprises an upper gasket and a lower gasket; the outer diameter of the main pressure head, the outer diameter of the auxiliary pressure head and the inner diameter of the die cavity are the same; the grinding wheel block forming die with good uniformity has a first working state, a second working state and a third working state;
in a first operating state: the grinding wheel block forming die with good uniformity comprises a die cavity, an upper auxiliary pressure head, a lower auxiliary pressure head, an upper gasket and a lower gasket; the upper auxiliary pressure head and the lower auxiliary pressure head are respectively positioned in the die cavity; the upper gasket and the lower gasket are respectively positioned on the upper surface and the lower surface of the die cavity; a cavity is formed among the die cavity, the upper auxiliary pressure head and the lower auxiliary pressure head;
in a second operating state: the grinding wheel block forming die with good uniformity comprises a die cavity, an upper main pressure head, a lower auxiliary pressure head and a lower gasket; the upper main pressure head and the lower auxiliary pressure head are respectively positioned in the die cavity; the lower gasket is positioned on the lower surface of the die cavity;
in a third operating state: the grinding wheel block forming die with good uniformity comprises a die cavity, an upper main pressure head and a lower main pressure head; the upper main pressure head and the lower main pressure head are respectively positioned in the die cavity.
In the utility model, the shape and the size of the upper main pressure head and the lower main pressure head are consistent, the shape and the size of the upper auxiliary pressure head and the lower auxiliary pressure head are consistent, and the shape and the size of the upper gasket and the lower gasket are consistent. The present invention takes the state of the mold in actual use as the up-down position. The pressure head is positioned in the die cavity, and is combined with the inner wall of the die cavity to form a cavity for placing the raw material of the grinding wheel block, and the size of the cavity is designed according to the thickness of the grinding wheel block. The mold can be used for preparing the super-thick grinding wheel block, the thickness of the grinding wheel block is 6-30 mm, such as 9-24 mm, and for the thickness, the forming effect in the prior art needs to be improved, because the existing grinding wheel block has the conditions of quick middle abrasion and poor grinding effect, and for workpieces with high surface quality requirements, the existing super-thick grinding wheel block needs to be replaced after 40% abrasion.
In the utility model, the thickness of the gasket is 1-10 mm, and the gasket is of an annular structure; the height of the upper main pressure head and the height of the lower main pressure head are 10-30 mm; the heights of the upper auxiliary pressure head and the lower auxiliary pressure head are 15-40 mm; the height of the die cavity is 30-80 mm, and the outer diameter of the die cavity is 50-100 mm. The main pressure head and the auxiliary pressure head with different heights are adopted, the height of the formed cavity is different under the condition that no raw material exists, multiple layers of grinding wheel blocks can be uniformly prepared, the layer-by-layer interface effect is good, and the grinding performance of the grinding wheel blocks is greatly improved compared with that of the existing grinding wheel blocks after the grinding wheel blocks are integrally sintered.
In the utility model, the main pressure head and the auxiliary pressure head can be cylindrical or regular hexagonal prism, correspondingly, the inner wall of the die cavity can be cylindrical or regular hexagonal prism; thereby obtaining a disc-type or hexagonal grinding wheel block.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the grinding wheel is prepared in a mode of a first layer working state, a second layer working state and a third layer working state, the density distribution of the prepared grinding wheel is more uniform, the hardness of each layer is close to the same, the multiple layers of grinding wheels are tightly combined after sintering, and the grinding wheel has no cracks;
2. according to the grinding wheel manufactured by the utility model, through grinding test, the grinding efficiency of the surface layer of the grinding wheel is consistent with that of the middle position, and the grinding wheel loss at different thicknesses is consistent;
3. the utility model has simple structure and is convenient for popularization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a first operating state of the present invention;
FIG. 3 is a schematic view of a second operating state of the present invention;
FIG. 4 is a schematic view of a third operating state of the present invention;
FIG. 5 is a top plan view of the first operating condition of the present invention;
FIG. 6 is a top plan view of a second operational condition of the present invention;
wherein: 1. a gasket; 2. a mold cavity; 3. a secondary ram; 4. a primary ram; 5. a first layer of embryo bodies; 6. a second layer of embryo body; 7. a third layer of embryo body; 11. a lower gasket; 12. an upper gasket; 31. a lower auxiliary pressure head; 32. an upper auxiliary pressure head; 41. a lower main pressure head; 42. and (5) an upper main pressure head.
Detailed Description
The specific parts of the utility model can be obtained conventionally according to the description of the utility model, and the raw materials of the grinding wheel block are all conventional products, and the specific pressing, sintering and bonding are conventional technology for preparing the conventional grinding wheel. The utility model is further described with reference to the following figures and examples:
example one
Referring to fig. 1 to 6, a grinding wheel block molding preparation mold with good uniformity comprises a gasket 1, a mold cavity 2, an auxiliary pressure head 3 and a main pressure head 4; the auxiliary pressure head 3 comprises an upper auxiliary pressure head 32 and a lower auxiliary pressure head 31, the main pressure head 4 comprises an upper main pressure head 42 and a lower main pressure head 41, the gasket comprises an upper gasket 12 and a lower gasket 11, and the outer diameters of the main pressure head 4 and the auxiliary pressure head 3 are the same as the inner diameter of the die cavity 2; the gasket 1 is of an annular structure, and the inner diameter of the annular structure is larger than the outer diameter of the main pressure head;
the die has a first working state, a second working state and a third working state:
in a first working state, an upper auxiliary pressure head and a lower auxiliary pressure head are respectively positioned in a die cavity, an upper gasket and a lower gasket are respectively positioned on the upper surface and the lower surface of the die cavity, the outer wall of the auxiliary pressure head is in clearance fit with the inner wall of the die cavity, a cavity is formed among the die cavity, the upper auxiliary pressure head and the lower auxiliary pressure head, and a grinding wheel block raw material is placed to form a first layer of blank body 5;
in a second operating state: the upper main pressure head and the lower auxiliary pressure head are respectively positioned in the die cavity, and the lower gasket is positioned on the lower surface of the die cavity; the outer wall of the auxiliary pressure head is in clearance fit with the inner wall of the die cavity, the outer wall of the main pressure head is in clearance fit with the inner wall of the die cavity, a cavity is formed among the die cavity, the upper main pressure head and the first layer of green body, and a grinding wheel block raw material is placed to form a second layer of green body 6;
in a third operating state: the upper main pressure head and the lower main pressure head are respectively positioned in the die cavity, the outer wall of the main pressure head is in clearance fit with the inner wall of the die cavity, a cavity is formed between the die cavity and the lower main pressure head and between the first layer of green bodies, a grinding wheel block raw material is placed to form a third layer of green bodies 7, at the moment, the upper main pressure head is arranged below, and the lower main pressure head is arranged above.
In this embodiment, the die is made of die-casting die steel, and the components are in clearance fit. The height of the die cavity is 50 mm; the die cavity external diameter is 60mm, and the die cavity internal diameter is 20mm, and the height of going up main pressure head and lower main pressure head all is 20.5mm, and is cylindrical, goes up vice pressure head and highly all being 26.5mm of vice pressure head down, and is cylindrical, and the thickness of gasket all is 3mm, and the ring shape is.
During actual production, firstly, the lower gasket is padded under the die cavity, the lower auxiliary pressure head is placed into the die cavity, then the raw material of the grinding wheel block (the raw material is the existing product) is placed, the upper auxiliary pressure head is placed into the die cavity, the upper gasket is placed on the die cavity, and pressing is carried out (the existing process) to obtain a first layer of blank; then taking the upper gasket and the upper auxiliary pressure head away, continuously putting the grinding wheel block raw material on the first layer of blank, putting the upper main pressure head into the die cavity, and pressing to obtain a second layer of blank; then, turning the die cavity, taking the lower gasket and the lower auxiliary pressure head away, putting the raw material of the grinding wheel block on the first layer of blank, putting the lower main pressure head into the die cavity, and pressing to obtain a third layer of blank; and finally, taking out the blank with the thickness of 9mm, conventionally sintering to obtain the super-thick grinding wheel block, wherein the density distribution of the middle part and two ends of the super-hard grinding material grinding wheel block prepared by the mold is uniform, the multiple layers are tightly combined after sintering, and the grinding wheel has no cracks.
Comparative example 1
On the basis of the first embodiment, a die cavity, an upper main pressure head and a lower main pressure head are adopted to form the die, the lower main pressure head is placed into the die cavity, then raw materials are placed, the raw materials are the sum of the raw materials in the first embodiment, finally the upper main pressure head is placed into the die cavity for pressing, a blank body with the thickness of 9mm is obtained, and the blank body is sintered conventionally to obtain the ultra-thick grinding wheel block without cracks.
Comparative example No. two
On the basis of the first embodiment, a gasket, a die cavity, an upper auxiliary pressure head and a lower auxiliary pressure head are adopted to form a die, the lower gasket is firstly padded below the die cavity, the lower auxiliary pressure head is placed into the die cavity, then the raw materials with the same quantity as that of the first layer of blank prepared in the first embodiment are placed, the upper auxiliary pressure head is placed into the die cavity, the upper gasket is placed, pressing is carried out, a blank with the thickness of 3mm is obtained, the operations are repeated, a plurality of blanks with the thickness of 3mm are obtained, a plurality of grinding wheel blocks are obtained through conventional sintering, three grinding wheel blocks are taken and bonded together, and the super-thick grinding wheel block is obtained and has no cracks.
And (3) conventionally bonding the super-thick grinding wheel blocks obtained in the first embodiment, the first comparative embodiment and the second comparative embodiment on a chassis respectively to form grinding wheels, and processing the same workpieces. The grinding wheel block of the embodiment has good grinding performance and uniform grinding performance after being used in large batch, the grinding wheel is normally ground and consumed, and the surface of a workpiece meets the requirement. The grinding wheel of the grinding wheel block in the comparison example is found through mass use, the abrasion of the grinding wheel is obviously increased when the grinding wheel block is used half as fast, patterns are formed on the surface of a workpiece, the flatness of the grinding wheel is changed fast, and the requirements are not met. When the grinding wheel of the grinding wheel block of the comparative example is used for about one third, a bonding glue layer appears on the surface of the grinding wheel, and a grinding layer can not be exposed normally and can not be further processed.
Example two
On the basis of the first embodiment, the thickness of the part is adjusted, the gasket is firstly padded under the die cavity, the lower auxiliary pressure head is put down, then raw materials (the raw materials are the existing products) are put in, the upper auxiliary pressure head is put down, the gasket is put on the die cavity and pressed to obtain a first layer blank, the upper gasket is taken away, the upper auxiliary pressure head is moved away, the same amount of raw materials are continuously put in the first layer blank, the main pressure head is put down and pressed to obtain a second layer blank, the die cavity is turned over and the gasket is taken away, the lower auxiliary pressure head is moved away, the same amount of raw materials are put in the existing two layers of blanks, the lower main pressure head is put down and pressed to obtain a third layer blank, and finally a blank with the thickness of 24mm is obtained, the grinding wheel block is sintered conventionally, the densities of the middle part and two ends of the super-hard grinding wheel block prepared by the die are distributed uniformly, the multiple layers are combined tightly after sintering, and the grinding wheel has no crack. The grinding wheel has good grinding performance after being used in large batch, the grinding performance is uniform, the grinding wheel is consumed up normally, and the surface of the workpiece meets the requirements.
EXAMPLE III
On the basis of the first embodiment, a blank with the thickness of 15mm is finally obtained by adopting a regular hexagonal pressure head and adjusting the thickness of a component, the density of the middle part and two ends of the superhard abrasive grinding wheel block prepared by the mold is uniformly distributed, the sintered multiple layers are tightly combined, and the grinding wheel has no cracks. The grinding wheel has good grinding performance after being used in large batch, the grinding performance is uniform, the grinding wheel is consumed up normally, and the surface of the workpiece meets the requirements.
Claims (10)
1. The utility model provides a emery wheel piece shaping preparation mould of good homogeneity which characterized in that: the device comprises a die cavity, a main pressure head, an auxiliary pressure head and a gasket; the main pressure head comprises an upper main pressure head and a lower main pressure head; the auxiliary pressure head comprises an upper auxiliary pressure head and a lower auxiliary pressure head; the gasket comprises an upper gasket and a lower gasket; the outer diameter of the main pressure head, the outer diameter of the auxiliary pressure head and the inner diameter of the die cavity are the same; the grinding wheel block forming die with good uniformity has a first working state, a second working state and a third working state;
in a first operating state: the grinding wheel block molding preparation mold with good uniformity comprises a mold cavity, an upper auxiliary pressure head, a lower auxiliary pressure head, an upper gasket and a lower gasket; the upper auxiliary pressure head and the lower auxiliary pressure head are respectively positioned in the die cavity; the upper gasket and the lower gasket are respectively positioned on the upper surface and the lower surface of the die cavity; a cavity is formed among the die cavity, the upper auxiliary pressure head and the lower auxiliary pressure head;
in a second operating state: the grinding wheel block molding preparation mold with good uniformity comprises a mold cavity, an upper main pressure head, a lower auxiliary pressure head and a lower gasket; the upper main pressure head and the lower auxiliary pressure head are respectively positioned in the die cavity; the lower gasket is positioned on the lower surface of the die cavity;
in a third operating state: the grinding wheel block molding preparation mold with good uniformity comprises a mold cavity, an upper main pressure head and a lower main pressure head; the upper main pressure head and the lower main pressure head are respectively positioned in the die cavity.
2. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the gasket is of an annular structure.
3. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 2, is characterized in that: the inner diameter of the annular structure is larger than the outer diameter of the main pressure head.
4. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the upper auxiliary pressure head and the lower auxiliary pressure head have the same height; the height of the upper auxiliary pressure head and the height of the lower auxiliary pressure head are 15-40 mm.
5. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the thickness of the gasket is 1-10 mm.
6. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the height of the die cavity is 30-80 mm.
7. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the upper main pressure head and the lower main pressure head are the same in height; the height of the upper main pressure head and the height of the lower main pressure head are 10-30 mm.
8. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the outer diameter of the die cavity is 50-100 mm.
9. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the main pressure head and the auxiliary pressure head are cylindrical or regular hexagonal prism.
10. The mold for molding and preparing the grinding wheel block with good uniformity as claimed in claim 1, is characterized in that: the thickness of the grinding wheel block is 6-30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123009471.3U CN216542808U (en) | 2021-11-30 | 2021-11-30 | Grinding wheel block forming and manufacturing die with good uniformity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123009471.3U CN216542808U (en) | 2021-11-30 | 2021-11-30 | Grinding wheel block forming and manufacturing die with good uniformity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216542808U true CN216542808U (en) | 2022-05-17 |
Family
ID=81539055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123009471.3U Active CN216542808U (en) | 2021-11-30 | 2021-11-30 | Grinding wheel block forming and manufacturing die with good uniformity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216542808U (en) |
-
2021
- 2021-11-30 CN CN202123009471.3U patent/CN216542808U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103302226B (en) | Precise forging process for front upper arm part of car chassis suspension system | |
| CN201645343U (en) | Mould for press forming segment of working layer of super hard abrasive grinding wheel along the radius direction | |
| CN203427152U (en) | Ceramic rice milling profiled sand roller forming die | |
| CN216542808U (en) | Grinding wheel block forming and manufacturing die with good uniformity | |
| CN203831546U (en) | Split mold facilitating forming and demolding of ceramic internal-grinding superhard grinding wheel with large height-diameter ratio | |
| CN111203961A (en) | Forming die and method for planar ceramic target | |
| CN201158006Y (en) | Energy-saving grinding wheel mould | |
| CN204108865U (en) | A kind of pressure head and use the press-moulding die of this pressure head | |
| CN113084718A (en) | Forming and sintering process of metal bond diamond grinding head | |
| CN111993294B (en) | Preparation method of ceramic bond diamond grinding wheel with low-temperature thermosetting type adhesion layer | |
| CN106825492A (en) | A kind of die casting die joint bedding-in method | |
| CN113635226B (en) | Ceramic internal grinding wheel grinding complex, double-layer grinding wheel and preparation method | |
| CN114478054A (en) | Porous ceramic and preparation method thereof | |
| CN218397690U (en) | Hot pressing die for producing diamond grinding wheel | |
| CN211680003U (en) | Pressing die of hard alloy crushing disc | |
| CN220922067U (en) | Integral high-thickness resin superhard grinding wheel forming die and device | |
| CN212762964U (en) | Large-diameter grinding wheel die | |
| CN109465449B (en) | Beneficial friction rapid sintering forming method for hard alloy cutter with large height-diameter ratio | |
| CN112454936A (en) | Positioning method in carbon fiber product processing process | |
| CN206047910U (en) | A kind of composite propeller core mould | |
| CN204413878U (en) | A kind of grinding stone heat pressing and molding mold | |
| CN220446731U (en) | Ceramic powder forming device | |
| CN113319751B (en) | Method for manufacturing metal bond diamond grinding wheel and equipment for manufacturing metal bond diamond grinding wheel | |
| CN213106383U (en) | Pressing die for special-shaped cylindrical grinding wheel | |
| CN213613902U (en) | Forging and pressing die for connecting rod sample |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |