CN203459680U - Hemispherical forming die for high-pressure grinding roller column nail - Google Patents
Hemispherical forming die for high-pressure grinding roller column nail Download PDFInfo
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- CN203459680U CN203459680U CN201320512390.1U CN201320512390U CN203459680U CN 203459680 U CN203459680 U CN 203459680U CN 201320512390 U CN201320512390 U CN 201320512390U CN 203459680 U CN203459680 U CN 203459680U
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Abstract
The utility model discloses a hemispherical forming die for a high-pressure grinding roller column nail. The die is formed by an upper punch, an inner sleeve, a punch top groove, an outer sleeve and a lower punch, wherein the upper punch is inserted into the inner sleeve, the outer sleeve is sleeved on the inner sleeve, the lower punch is pressed into the inner sleeve, a die cavity is formed between the upper and lower punches and serves as a forming cavity for the high-pressure grinding roller column nail, and the hemispherical punch top groove is formed in the upper end of the lower punch and is provided with spherical surface sections with different radii. The hemispherical forming die for the high-pressure grinding roller column nail is an automatic bidirectional pressing forming die with a hemisphere, a product is formed and produced by the die with the hemisphere, a finish machining process on a bulb is canceled, the production cost is reduced, and the production efficiency and the product quality stability are improved.
Description
Technical field
The utility model belongs to a kind of mould of hart metal product, specifically high-pressure roller mill stud half ball shaping mould.
Background technology
High-pressure roller mill, as a kind of pulverising apparatus, is widely used in the fragmentation of the industry materials such as ore, cement, chemical industry.High-pressure roller mill wear-out part is mainly the roller shell of roller, and roller shell generally adopts hard alloy stud surface, and during high-pressure roller mill work, material is filled in intercolumniation, forms the wear-resistant backing strap of spontaneous formula, protection roll surface.But the operating pressure that stud can be born is limited, frangibility, difficult reparation, need to often change.This makes the demand of carbide alloy high-pressure roller mill stud increasing.
The edge of high-pressure roller mill stud is joined position and is required hemisphere face contact, and dimension precision requirement is high.Conventional segment shaped article, because bulb position is segment, does not reach hemisphere requirement, in order to reach hemisphere, adopt the fine finishining of product top, first with forming grinding wheel, on cutter and tool grinding machine, carry out machining on spherical end, adopt again the manual cutter trade of repairing, because stud is alloy, difficulty of processing is large, and forming grinding wheel need to be repaired R value repeatedly, working (machining) efficiency is not high, cycle is also long, and in processing, quality control difficulty is large, easily produces processing waste product and reprocessed products.At present, the production of roller mill stud mainly adopts compression molding, mainly contains two kinds of mold pressing forms:
1, manually moulded section, manually the mould of pressing mold is designed to carry nearly hemisphere production moulding by heelpiece, need to carry out reconditioning to product bulb position and product cylinder junction.
2, automatic extruding moulding, is designed to segment compacting by product hemisphere position, and the segment product of automatic extruding adopts fine finishining bulb position to reach the semi-spherical shape needing after sintering.
Above-mentioned two kinds of mold pressings all have drawback: hand mould production efficiency is low, and labor intensity of operating staff is large, are not suitable for producing in enormous quantities; The fine finishining of automatic extruding segment need of production, the process-cycle is long, and after product processing, ball head bit integrity is unstable, and processing cost is higher.The drawback of two kinds has all restricted the production in enormous quantities of this series products to a certain extent.
Utility model content
The purpose of this utility model is to provide a kind of and reduces production costs, high-pressure roller mill stud half ball shaping mould of High-efficient Production in batches.
The technical solution of the utility model is:
High-pressure roller mill stud half ball shaping mould, comprises upper punch, inner sleeve, overcoat (5) and low punch, and the upper punch of described mould inserts in inner sleeve; Overcoat puts in being enclosed within; Low punch heads in inner sleeve; Between upper punch and low punch, form die cavity; Drift inverted draw cut is arranged on the upper end of low punch.
Further improve and be: described drift inverted draw cut is hemispherical.
Further improve and be: the hemisphere of described drift inverted draw cut is provided with the sphere section of different radii.
Further improve and be: the sphere section of described drift inverted draw cut has 4 at least.
Further improve and be: 4 sphere sections of described drift inverted draw cut setting are R1 section, R2 section, R3 section and R4 section.
Further improve and be: the radius of described R4 section is 1.8～1.95 times of the inverted draw cut hemisphere degree of depth.
Further improve and be: described R1 section and the ratio of R2 section are 0.97～0.98; The ratio of R2 section and R3 section is 1.005～1.01; The ratio of R1 section and R4 is 0.48～0.52.
Change original mould segment inverted draw cut into multistage R drift inverted draw cut, adopt the control of multistage R, both solved the hemisphere requirement that bulb after hemisphere molded blank product sintering shrinkage reaches design, solved preferably again the problem of the compressing demoulding difficulty of hemisphere product.Drift inverted draw cut is 4 sections of R of hemispherical, makes bulb spot size after sintering shrinkage, reach hemisphere dimensional requirement.R1 section, R2 section, R3 section are to reach hemisphere dimensional requirement in order to ensure size after product blank sintering shrinkage, the effect of R4 section is equivalent to form a demoulding coning angle, R4 has played the effect of demoulding tapering, and in the time of guaranteeing mass production, nearly hemispherical head position can the normal demoulding.
Further improve and be: half described ball shaping mould is provided with drift cutting edge.
Further improve and be: the edge width of described drift cutting edge is 0.14～0.16mm.
By controlling mold and punching head edge width, guarantee the cutting edge strength of hemisphere forming punching head and control external diameter allowance.
The utility model has the advantage of: alternative segment drift product, cancel top hemisphere fine finishining step, shorten the process-cycle, reduce production costs and difficulty of processing; Improve the uniformity at product bulb position, stabilized product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model mould.
Fig. 2 is the schematic diagram of the utility model drift inverted draw cut.
Fig. 3 is the schematic diagram of high-pressure roller mill stud.
Fig. 4 is original drift inverted draw cut schematic diagram.
In figure: 1, upper punch; 2, die cavity; 3, inner sleeve; 4, drift inverted draw cut; 5, overcoat; 6, low punch; 7, R1 section; 8, R2 section; 9, R3 section; 10, R4 section; 11, drift cutting edge
The specific embodiment
In order to make the technical solution of the utility model clearer, below, by reference to the accompanying drawings the utility model is further described:
As shown in Figure 1, mould of the present utility model is comprised of upper punch 1, inner sleeve 3, inverted draw cut 4, overcoat 5 and low punch 6.Insert in inner sleeve 3 lower end of upper punch 1; Overcoat 5 is enclosed within inner sleeve 3; The upper end of low punch 6 heads in inner sleeve 3; Between upper punch 1 and low punch 6, form die cavity 2, die cavity 2 is the forming cavity of high-pressure roller mill stud.In the upper end of low punch 6, be provided with drift inverted draw cut 4.
As shown in Figure 2, drift inverted draw cut 4 is hemispherical, is provided with the sphere section of different radii.By R1 section 7, R2 section 8, R3 section 9 and R4 section 10, formed.The hemisphere height h of drift inverted draw cut 4 and the relation of stud radius r are: h=a * b * r, and a value scope 1.03～1.05 wherein, b is mold line constriction coefficient, value 1.23～1.25.
The design of 4 sections of R is after sintering shrinkage, to reach design testing requirement in order to ensure hemisphere molded blank.The ratio of R1 and R2 is 0.97～0.98; The ratio of R2 and R3 is 1.005～1.01; The ratio of R1 and R4 is 0.48～0.52.The definite of R1 is in order to reach the testing requirement of stud product: within the scope of the φ 5mm of bulb top, have at least a point to contact with detection template.R2 and R3 are in order to improve the testing requirement of product bulb position plumpness: other positions of bulb are no more than 0.08mm gap with detection template.R4 definite is that product can not the demoulding occur blank crackle when solving bidirectional pressed moulding.11 is drift cutting edge, edge width 0.14～0.16mm.By controlling the edge width of mold and punching head, guarantee the cutting edge strength of hemisphere forming punching head and control external diameter allowance.Compression molding does not reach stud product external diameter required precision ± 0.01mm, the need of production of this series products carries out external diameter fine finishining, blank product diameter surplus than fine finishining after the large 0.25～0.30mm of diameter, be allowance, hemisphere blank diameter is controlled to finished product 0.25～0.30mm, and the burr of the punch head blade interruption-forming in the time of can be by moulding while realizing blank product fine finishining external diameter remove.
As shown in Figure 3, the top of high-pressure roller mill stud is hemispherical, and hemisphere is that roller shell edge is joined position, and dimensional requirement is high, external diameter tolerance ± 0.01mm, and bulb position and cylinder place do not allow to occur step, require and cylinder rounding off; For bulb position fits tightly roller mill seat, requiring bulb is hemisphere, and bulb R value will equal stud radius r.
As shown in Figure 4, the segment inverted draw cut R value of original drift inverted draw cut and stud radius r relation: R=a * b * r, a value scope 1.05～1.10 wherein, b is mold line constriction coefficient, value 1.23～1.25.Segment inverted draw cut height h and stud r close: h=a * b * r, and a value scope 0.85～0.90 wherein, b is mold line constriction coefficient, value 1.23～1.25.The product blank that segment inverted draw cut drift is produced, after sintering shrinkage, ball R value is 1.05～1.10 times of stud radius r, but billiard table height value only have stud radius r 0.85～0.90, do not reach product bulb R and billiard table height value and should equal the designing requirement of stud radius r, need to adopt forming grinding wheel to carry out fine finishining to bulb position and just can reach designing requirement.
The utility model is a kind of automatic bidirectional press-moulding die that carries hemisphere, original mould segment drift inverted draw cut is changed into the multistage R drift inverted draw cut with different radii sphere section.Adopt multistage R to control, both solved the hemisphere requirement that bulb after hemisphere molded blank product sintering shrinkage reaches design, solved preferably again the problem of the compressing demoulding difficulty of hemisphere product.The utility model substitutes machining on spherical end, and compressing blank bulb reaches hemisphere designing requirement after sintering shrinkage, realizes mold and punching head and carries half ball forming production, realizes the production that automatic extruding carries hemisphere high-pressure roller mill stud.Adopt the utility model to produce high-pressure roller mill stud, cancelled top hemisphere fine finishining step, shortened the process-cycle, reduced difficulty of processing, constant product quality.After hemisphere shaped article bulb carries, bulb does not need fine finishining, only need to carry out external diameter processing and just can reach designing requirement.
Most preferred embodiment of the present utility model is to change the segment drift of automatic extruding bidirectional pressed moulding 4 sections of R hemisphere drifts with different radii sphere section into, the inverted draw cut (as shown in Figure 4) that is about to original mould changes 4 sections of R inverted draw cuts (as shown in Figure 2) into, adopt 4 sections of R, R1 section 7, R2 section 8, R3 section 9 are to reach hemisphere dimensional requirement in order to ensure size after product blank sintering shrinkage.Because compression molding product blank exists elastic after effect, demoulding R there will be drift product stress can cause blank crackle when too small, and very arriving can not the demoulding.The setting of R4 section 10 is in order to mate R1 section, R2 section, R3 section, forms complete hemisphere mould inverted draw cut, solves the compressing demoulding of nearly hemisphere product.R4 section 10 is 1.8～1.95 times of drift inverted draw cut 4 degree of depth, and its design load is larger, and its effect is equivalent to form a demoulding coning angle, and R4 has played the effect of demoulding tapering, and in the time of guaranteeing mass production, nearly hemispherical head position can the normal demoulding.
Above-described embodiment is only in order to explain the utility model, and is not used in restriction the utility model.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. high-pressure roller mill stud half ball shaping mould, comprises upper punch (1), inner sleeve (3), overcoat (5) and low punch (6), it is characterized in that: the upper punch of described mould (1) inserts in inner sleeve (3); Overcoat (5) is enclosed within inner sleeve (3); Low punch (6) heads in inner sleeve (3); Between upper punch (1) and low punch (6), form die cavity (2); Drift inverted draw cut (4) is arranged on the upper end of low punch (6).
2. according to high-pressure roller mill stud half ball shaping mould claimed in claim 1, it is characterized in that: described drift inverted draw cut (4) is hemispherical.
3. according to high-pressure roller mill stud half ball shaping mould claimed in claim 2, it is characterized in that: the hemisphere of described drift inverted draw cut (4) is provided with the sphere section of different radii.
4. according to high-pressure roller mill stud half ball shaping mould claimed in claim 3, it is characterized in that: the sphere section of described drift inverted draw cut (4) has 4 at least.
5. according to high-pressure roller mill stud half ball shaping mould claimed in claim 4, it is characterized in that: 4 sphere sections that described drift inverted draw cut (4) arranges are R1 section (7), R2 section (8), R3 section (9) and R4 section (10).
6. according to high-pressure roller mill stud half ball shaping mould claimed in claim 5, it is characterized in that: the radius of described R4 section (10) is 1.8～1.95 times of drift inverted draw cut (4) the hemisphere degree of depth.
7. according to high-pressure roller mill stud half ball shaping mould described in claim 5 or 6, it is characterized in that: described R1 section (7) is 0.97～0.98 with the ratio of R2 section (8); R2 section (8) is 1.005～1.01 with the ratio of R3 section (9); R1 section (7) and ratio R4(10) are 0.48～0.52.
8. according to high-pressure roller mill stud half ball shaping mould claimed in claim 1, it is characterized in that: half described ball shaping mould is provided with drift cutting edge (11).
9. according to 8 high-pressure roller mill stud half ball shaping mould described in claim, it is characterized in that: the edge width of described drift cutting edge (11) is 0.14～0.16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512390.1U CN203459680U (en) | 2013-08-21 | 2013-08-21 | Hemispherical forming die for high-pressure grinding roller column nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512390.1U CN203459680U (en) | 2013-08-21 | 2013-08-21 | Hemispherical forming die for high-pressure grinding roller column nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203459680U true CN203459680U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320512390.1U Expired - Lifetime CN203459680U (en) | 2013-08-21 | 2013-08-21 | Hemispherical forming die for high-pressure grinding roller column nail |
Country Status (1)
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|---|---|
| CN (1) | CN203459680U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368812A (en) * | 2014-11-28 | 2015-02-25 | 中核(天津)科技发展有限公司 | Pressing die for bonded neodymium-iron-boron magnetic body |
| CN108480878A (en) * | 2018-01-29 | 2018-09-04 | 东莞市固晶电子科技有限公司 | It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing |
| CN110039046A (en) * | 2019-05-31 | 2019-07-23 | 济南新艺粉末冶金有限公司 | A kind of powdered metal parts production compacting tool set and its application |
| CN112774799A (en) * | 2020-12-17 | 2021-05-11 | 株洲硬质合金集团有限公司 | Hard alloy composite edge tooth for high-pressure roller mill and preparation method thereof |
-
2013
- 2013-08-21 CN CN201320512390.1U patent/CN203459680U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368812A (en) * | 2014-11-28 | 2015-02-25 | 中核(天津)科技发展有限公司 | Pressing die for bonded neodymium-iron-boron magnetic body |
| CN108480878A (en) * | 2018-01-29 | 2018-09-04 | 东莞市固晶电子科技有限公司 | It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing |
| CN110039046A (en) * | 2019-05-31 | 2019-07-23 | 济南新艺粉末冶金有限公司 | A kind of powdered metal parts production compacting tool set and its application |
| CN112774799A (en) * | 2020-12-17 | 2021-05-11 | 株洲硬质合金集团有限公司 | Hard alloy composite edge tooth for high-pressure roller mill and preparation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |
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| CX01 | Expiry of patent term |