CN203831546U - Split mold facilitating forming and demolding of ceramic internal-grinding superhard grinding wheel with large height-diameter ratio - Google Patents
Split mold facilitating forming and demolding of ceramic internal-grinding superhard grinding wheel with large height-diameter ratio Download PDFInfo
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- CN203831546U CN203831546U CN201320885467.XU CN201320885467U CN203831546U CN 203831546 U CN203831546 U CN 203831546U CN 201320885467 U CN201320885467 U CN 201320885467U CN 203831546 U CN203831546 U CN 203831546U
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Abstract
The utility model provides a split mold facilitating forming and demolding of a ceramic internal-grinding superhard grinding wheel with a large height-diameter ratio, wherein the split mold aims to solve the technical problems that when ceramic internal-grinding superhard grinding wheels with the large height-diameter ratios are formed, axial density uniformity is poor, existing molds are short in service life, and even the ceramic internal-grinding superhard grinding wheels cannot be formed. The split mold comprises a mold sleeve, an upper pressing head, a lower pressing head and a mandrel, wherein the mold sleeve is a split mold sleeve with external taper, and the mold sleeve is sleeved with a corresponding fastening ring with internal taper. The density uniformity of the grinding wheel formed by the split mold can be increased by more than 30%, and the service life of the split mold can be prolonged by more than 50%.
Description
Technical field
The utility model relates to a kind of mould of making ceramic hard grinding wheel, particularly a kind of valving die that facilitates the inner circle mill hard grinding wheel moulding of larger ratio of height to diameter pottery and the demoulding.
Background technology
Compression molding technology is widely used in the manufacturing of vitrified abrasive, has production efficiency high, and manually less, percent defective is low, with short production cycle, the extrudate density scope of production is large, is applicable to the advantage of the mass production of large, medium and small various degree.But due to the particularity of emery wheel industry, the hardness of abrasive material is all higher, wherein the hardness of super hard abrasive is higher, far above the hardness of grinding tool, therefore superhard material products is very severe to the wearing and tearing of mould in the process of compacting and the demoulding, inner circle grinding abrasive disk major part is tubular construction, the height of emery wheel is with radially the ratio of ring width (hereinafter to be referred as " ratio of height to diameter ") is larger, belong to not only thin but also long structure, general ratio of height to diameter value scope is in 3-10 left and right, but higher emery wheel ratio of height to diameter is even greater than 10, in the time that the ratio of height to diameter value of inner circle grinding abrasive disk is greater than 5, generally be referred to as larger ratio of height to diameter inner circle grinding abrasive disk.
Along with the raising of ratio of height to diameter value, in the process of compacting and the demoulding, the inside and outside wall of pressed ware and the contact area of mould increase thereupon, emery wheel and mould intracavity wall, also there is larger increase in the frictional force (being depanning resistance) between mandrel, and vitrified abrasive biscuit intensity is lower, when moulding ratio of height to diameter value is during higher than 5 ceramic inner circle grinding abrasive disk, along with the increase of die wear even there will be depanning resistance higher than emery wheel biscuit intensity, cause the emery wheel biscuit after moulding to occur crackle or damaged situation, cause occurring moulding waste product, mould is scrapped too early, make the service life of mould shorter, moulding ratio of height to diameter is the ceramic inner circle grinding abrasive disk of 5 left and right, mould only can 50 left and right of moulding ceramic CBN emery wheel or the ceramic metal diamond grinding wheel of 30 left and right, even employing sintered-carbide die, life-span also can only extend 30% left and right, and the price of sintered-carbide die is 3～5 times of common die, this is totally unfavorable to reducing production costs.
And along with the raising of emery wheel ratio of height to diameter, can further reduce die life, even when ratio of height to diameter is higher than 10 time, depanning resistance far away higher than molding blank intensity, the moulding that causes existing unitary mould cannot realize ceramic inner circle grinding hard grinding wheel.Depanning resistance is excessive on the other hand also can aggravate die wear, and dull die further makes emery wheel frictional force in the time of compacting and the demoulding increase, thus Density inhomogeneity degree increase vertically after abrasive wheel forming.
Summary of the invention
The problem that the technical problems to be solved in the utility model exists while being the moulding of larger ratio of height to diameter pottery inner circle mill hard grinding wheel that axial density uniformity is poor, die life is low, even cannot moulding, for addressing the above problem, provide a kind of valving die that facilitates the inner circle mill hard grinding wheel moulding of larger ratio of height to diameter pottery and the demoulding.
The purpose of this utility model realizes in the following manner:
The valving die that facilitates the inner circle mill hard grinding wheel moulding of larger ratio of height to diameter pottery and the demoulding, comprises die sleeve, seaming chuck, push-down head and mandrel, and described die sleeve is the distinguish die sleeve with external taper, and die sleeve overcoat has the corresponding dead ring with internal taper.
Described mandrel is the mandrel with tapering, and major part coordinates with push-down head, and microcephaly coordinates with seaming chuck.
Described die sleeve is the three lobe die sleeves with external taper.
With respect to prior art, the utility model has adopted the structural design of die sleeve distinguish and mandrel band cone, mandrel can reduce compacting on the one hand with taper design time the frictional resistance of molding mass to mould, improve grinding wheel spindle to density uniformity; In the time of depoling axle, eject to major part from microcephaly on the other hand, reduced the wearing and tearing to mandrel.The distinguish design of die sleeve has saved the process ejecting with seaming chuck take off external mold after abrasive wheel forming time, only need take off fastening outer shroud, take away successively distinguish die sleeve, design by innovation structure can be eliminated the frictional resistance between emery wheel goods and mould inner wall, avoids going out in mold process, to produce defect at emery wheel.Show by production practices, the emery wheel of the utility model moulding can improve the density uniformity of emery wheel more than 30%, extends the service life of mould more than 50%.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the cutaway view of die sleeve of the present utility model.
Fig. 3 is the top view of die sleeve of the present utility model.
Fig. 4 is the structural representation of dead ring.
Fig. 5 is the structural representation of seaming chuck.
Fig. 6 is the structural representation of push-down head.
Fig. 7 is the structural representation of mandrel.
Detailed description of the invention
As shown in Figure 1, facilitate the valving die of the inner circle mill hard grinding wheel moulding of larger ratio of height to diameter pottery and the demoulding, comprise die sleeve 3, seaming chuck 1, push-down head 5 and mandrel 2, die sleeve 3 is the distinguish die sleeve with external taper, and die sleeve overcoat has the corresponding dead ring with internal taper 4.Mandrel is the mandrel with tapering, and major part coordinates with push-down head 5, and microcephaly coordinates with seaming chuck 1.Die sleeve is the three lobe die sleeves with external taper.
When compacting, first three lobe die sleeves are docking together, outside puts dead ring, and three external tapers of lobe die sleeve and the internal taper of dead ring are closely cooperated, and pounds tight, now die sleeve longitudinal profile is above little large taper below, load onto push-down head and mandrel, the major part of mandrel coordinates with push-down head, starts to feed intake, strike off after installing, load onto seaming chuck, on press, be depressed into fixed dimension with certain pressure.
When mould unloading, first lay down mandrel from seaming chuck direction, turnover mould again, now the longitudinal profile of die sleeve is large little taper below above, due to this taper fit, only need slightly firmly can knock gently the outer dead ring of three lobe die sleeves downwards open, three lobe die sleeves are thereupon loosening, take off successively three lobe moulds, take out gently emery wheel.
Claims (1)
1. facilitate the valving die of the inner circle mill hard grinding wheel moulding of larger ratio of height to diameter pottery and the demoulding, comprise die sleeve, seaming chuck, push-down head and mandrel, it is characterized in that: described die sleeve is the distinguish die sleeve with external taper, and die sleeve overcoat has the corresponding dead ring with internal taper; Described mandrel is the mandrel with tapering, and major part coordinates with push-down head, and microcephaly coordinates with seaming chuck; Described die sleeve is the three lobe die sleeves with external taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320885467.XU CN203831546U (en) | 2013-12-31 | 2013-12-31 | Split mold facilitating forming and demolding of ceramic internal-grinding superhard grinding wheel with large height-diameter ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320885467.XU CN203831546U (en) | 2013-12-31 | 2013-12-31 | Split mold facilitating forming and demolding of ceramic internal-grinding superhard grinding wheel with large height-diameter ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203831546U true CN203831546U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320885467.XU Expired - Fee Related CN203831546U (en) | 2013-12-31 | 2013-12-31 | Split mold facilitating forming and demolding of ceramic internal-grinding superhard grinding wheel with large height-diameter ratio |
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| CN (1) | CN203831546U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493739A (en) * | 2014-11-17 | 2015-04-08 | 常州市宏硕电子有限公司 | Cast aluminum die for casting CBN (cubic boron nitride) grinding wheel with grinding rod |
| CN104690811A (en) * | 2015-03-16 | 2015-06-10 | 中国科学院福建物质结构研究所 | Hot pressing mold easy to de-mold and method for preparing porous structure ceramic by hot pressing mold |
| CN107498766A (en) * | 2017-08-24 | 2017-12-22 | 成都鑫欣鑫钰科技有限公司 | A kind of mould for dry material compression forming |
| CN109632424A (en) * | 2019-01-10 | 2019-04-16 | 浙江工业大学 | A kind of layering compaction test apparatus of static triarial test manipulated soil |
| CN112432835A (en) * | 2020-11-25 | 2021-03-02 | 浙江工业大学 | Permeation test sample demoulding device and demoulding method thereof |
-
2013
- 2013-12-31 CN CN201320885467.XU patent/CN203831546U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493739A (en) * | 2014-11-17 | 2015-04-08 | 常州市宏硕电子有限公司 | Cast aluminum die for casting CBN (cubic boron nitride) grinding wheel with grinding rod |
| CN104690811A (en) * | 2015-03-16 | 2015-06-10 | 中国科学院福建物质结构研究所 | Hot pressing mold easy to de-mold and method for preparing porous structure ceramic by hot pressing mold |
| CN107498766A (en) * | 2017-08-24 | 2017-12-22 | 成都鑫欣鑫钰科技有限公司 | A kind of mould for dry material compression forming |
| CN109632424A (en) * | 2019-01-10 | 2019-04-16 | 浙江工业大学 | A kind of layering compaction test apparatus of static triarial test manipulated soil |
| CN112432835A (en) * | 2020-11-25 | 2021-03-02 | 浙江工业大学 | Permeation test sample demoulding device and demoulding method thereof |
| CN112432835B (en) * | 2020-11-25 | 2023-09-05 | 浙江工业大学 | Permeation test sample demolding device and demolding method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |