CN203155918U - Mincing knife for forging and pressing cutting or pressing shoulder - Google Patents
Mincing knife for forging and pressing cutting or pressing shoulder Download PDFInfo
- Publication number
- CN203155918U CN203155918U CN 201320123673 CN201320123673U CN203155918U CN 203155918 U CN203155918 U CN 203155918U CN 201320123673 CN201320123673 CN 201320123673 CN 201320123673 U CN201320123673 U CN 201320123673U CN 203155918 U CN203155918 U CN 203155918U
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- cutting edge
- shoulder
- cutting
- pressing
- forging
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Abstract
The utility model discloses a mincing knife for forging and pressing cutting or pressing a shoulder. The mincing knife for forging and pressing cutting or pressing the shoulder comprises a mincing knife body. The mincing knife body is of a four-prismoid shape. The top of the mincing knife body and a cutting edge part of the mincing knife body are respectively located on two opposite lateral sides. The cutting edge part comprises a front cutting edge and a rear cutting edge, wherein the front portion of the front cutting edge and the front portion of the rear cutting edge are both inner-arc-shaped cutting edges. The cutting face of the front cutting edge and the cutting face of the rear cutting edge are inclined along the cutting edges in a radial mode, the mouth portion and the end portion of the front cutting edge are both rounded, two end sides of the cutting faces are inclined in the vertical direction, and the end face of the top inclines downwards from the front cutting edge to the rear cutting edge in a parallel mode. According to the mincing knife for forging and pressing cutting or pressing the shoulder, the defects that a workblank shoulder cutting or pressing region can be easily inclined, namely the inclining states are inconsistent, and the cutting shoulder region is cracked, cold-lapped and folded are overcome, the defects that the shoulder cutting depth can not meet the shoulder cutting requirements for eccentric shafts with a large-eccentric distance and single-throw crankshafts caused by oversize blocking in the process of cutting or pressing the shoulder and the service life is short and the mincing knife is difficult to repair are overcome, and the mincing knife is high in practicability and stability.
Description
Technical field
The utility model relates to the Machining Technology field, and the shoulder marking knife is cut or pressed in the structural shape blank forging and pressing that particularly relate to a kind of eccentric shaft, one-throw crankshaft.
Background technology
Current, many machineries, mechanism often adopt the structural shape of eccentric shaft, one-throw crankshaft, be the requirement that improves performance such as its intensity and reduce allowance, the blank of this type of part all adopts the forging and pressing processing mode, but in the process of forging and pressing processing eccentric shaft, one-throw crankshaft class part, whether reasonably optimizing such as the structure, parameter of shoulder operation and the forging and pressing marking knife that adopts is cut or is pressed in forging and pressing, will be the key that last forming part obtains forging and pressing quality quality.The present normal marking knife device scalariform marking knife device as shown in Figure 4 that adopts, this marking knife device cut or press shoulder after usually have the following situation that influence quality: blank is cut or is pressed the appearance of shoulder zone as shown in Figure 5 or be left, or right inclination (heeling condition is inconsistent) and cut the shoulder zone and crackle often occurs, pipe, defective such as fold, owing to cut or press the resistance of shoulder process big, cause cut the shoulder degree of depth can not be too big, can not satisfy the big eccentric shaft of eccentric throw, one-throw crankshaft cut the requirement of shoulder height degree, marking knife device short and difficult reparation in service life in addition, existing marking knife device has limited the blank stable processing quality, self not long in service life, increased the weight of the production cost burden.
The utility model content
In order to overcome above-mentioned existing technological deficiency, the purpose of this utility model is to provide a kind of and guarantees that conforming the raising simultaneously of otch incline direction cuts or press shoulder degree of depth ability, and have strong practicality and reliability, can guarantee that the forging and pressing of part quality are cut (pressures) and take on to use marking knife.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
The technical program is that (pressure) shoulder marking knife is cut in a kind of forging and pressing, comprise the marking knife body, wherein the marking knife body is the truncated rectangular pyramids shape, its top is positioned at two relative sides respectively with cutting edge portion, be anterior cutting edge and the rear portion cutting edge of arc cutting edge before described cutting edge portion comprises, its sword face is along the cutting edge radial skew, forwardly the equal rounding in the oral area of cutting edge and end, limit, sword face two ends is then along vertical inclination, and the end face at described top has a down dip to rear portion cutting edge level from anterior cutting edge.The utility model has adopted in the said structure, when the strike of anvil on the forging press is born on the top with certain angle of inclination, on inclined end face, will produce decomposition component, can guarantee that forging stock cuts (pressure) shoulder place and can not produce the otch state that is tilted to the left, avoid blank that allowance is provided, the sword face guarantees the intensity that hobs of marking knife along the cutting edge radial skew, reduced to hob resistance again, can improve simultaneously forging and pressing and cut (pressure) shoulder degree of depth ability, and cutting edge portion and end rounding avoid stress to concentrate and the plastic deformation streamline is completely severed.
Do further to optimize, the oral area 3-1 rounding of described anterior cutting edge 3, its radius of corner size range is 5mm to 10mm, avoids stress to concentrate and the plastic deformation streamline is completely severed, and can eliminate and cut the defectives such as crackle that (pressure) takes on the bottom section appearance.
Do further to optimize, the end 3-2 rounding of described anterior cutting edge 3, its radius of corner size range is 5mm to 10mm, avoids stress to concentrate and the plastic deformation streamline is completely severed, and can eliminate and cut the defectives such as crackle that (pressure) takes on the bottom section appearance.
Do further to optimize, the inclination angle scope that described top 1 level has a down dip be 3 degree to 8 degree, effect component is resolved in the strike of anvil on the forging press, can guarantee that forging stock cuts (pressure) shoulder place and can not produce the otch state that is tilted to the left, and avoids blank that allowance is provided.
Do further to optimize, the sword face two ends limit 2-1 of described cutting edge portion 2 and the angular range of vertical direction angle are that 43 degree are to 47 degree, can guarantee the intensity that hobs of marking knife, reduced to hob resistance again, and defectives such as forging stock is difficult for producing pipe, fold can make forging and pressing cut (pressure) shoulder degree of depth ability simultaneously and be improved.
Do further to optimize, the sword face of described cutting edge portion 2 along cutting edge angle of inclination radially be 40 degree to 45 degree, improve marking knife and hob intensity, reduced to hob resistance, and defectives such as forging stock is difficult for producing pipe, fold can make forging and pressing cut (pressure) shoulder degree of depth ability simultaneously and be improved.
Compared with prior art, the beneficial effects of the utility model are: the utility model with routine scalariform marking knife device compare, solved eccentric shaft, one-throw crankshaft class part is cut the quality problems behind (pressure) shoulder in forging and pressing, guaranteed to forge and press the uniformity of cutting (pressure) shoulder otch incline direction, making forging and pressing cut (pressure) shoulder degree of depth ability is improved, avoid stress to concentrate simultaneously and the plastic deformation streamline is completely severed, crackle and the difficult pipe that produces of forging stock that (pressure) shoulder bottom section occurs cut in elimination, defective such as fold, bigger practicality and the reliability that improves the marking knife device guaranteed the part quality in open die forging crush-cutting (pressure) shoulder process.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model front view;
Fig. 2 is the utility model center line cutaway view;
Fig. 3 is the utility model three-dimensional view;
Fig. 4 is existing marking knife apparatus structure schematic diagram;
Fig. 5 is the process flow diagram that freely forges and presses.
Mark among the figure: its top 1, blade part 2, end limit 2-1, anterior cutting edge 3, oral area 3-1, end 3-2, rear portion cutting edge 4.
The specific embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
As Fig. 1, Fig. 2 and shown in Figure 3, the technical program is that (pressure) shoulder marking knife is cut in a kind of forging and pressing, comprise the marking knife body, wherein the marking knife body is the truncated rectangular pyramids shape, its top 1 lays respectively at two relative sides with cutting edge portion 2, before comprising, described cutting edge portion 2 is anterior cutting edge 3 and the rear portion cutting edge 4 of arc cutting edge, sword face between anterior cutting edge 3 and rear portion cutting edge 4 is along the cutting edge radial skew, the angle of inclination optimal design is that 40 degree are to 45 degree, forwardly the oral area 3-1 of cutting edge 3 and the equal rounding of end 3-2, the dimensionally-optimised 5mm to 10mm that is designed to of the radius of corner of oral area 3-1 rounding wherein, the dimensionally-optimised 5mm to 10mm that is designed to of the radius of corner of end 3-2 rounding, sword face two side ends limit 2-1 is then along vertical inclination, itself and vertical direction angle optimal design are that 43 degree are to 47 degree, and the end face at top 1 is along the horizontal direction to rear portion cutting edge 4 has a down dip from anterior cutting edge 2, and the optimal design scope at inclination angle is that 3 degree are to 8 degree.In addition, circular arc cutting edge in anterior cutting edge 3 and rear portion cutting edge 4 can be selected for use, its middle front part cutting edge 3 cutting edges are that radius size is the circular arc of 180mm, what can be used for eccentric shaft that the diameter of axle is 80mm～280mm, one-throw crankshaft class part cuts (pressure) shoulder, also can be used for cutting eccentric shaft, the one-throw crankshaft class part that (pressures) takes on the degree of depth≤105mm.
The utility model has overcome that blank cuts that (pressure) shoulder zone occurs easily or a left side or right inclination are that heeling condition is inconsistent and cut the defective that the shoulder zone crackle, pipe occur, folds, overcome simultaneously cut (pressure) shoulder process be obstructed excessive, cause cut that the shoulder degree of depth can not satisfy the big eccentric shaft of eccentric throw, one-throw crankshaft cut the requirement of shoulder height degree, and service life is short and the shortcoming of difficult reparation, has advantages of high practicability and stability.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. (pressure) shoulder marking knife is cut in forging and pressing, comprise the marking knife body, it is characterized in that: described marking knife body is the truncated rectangular pyramids shape, its top (1) lays respectively at two relative sides with cutting edge portion (2), before comprising, described cutting edge portion (2) is anterior cutting edge (3) and the rear portion cutting edge (4) of arc cutting edge, its sword face is along the cutting edge radial skew, the oral area (3-1) of anterior cutting edge (3) and end (3-2) be rounding all, limit, sword face two ends (2-1) is then along vertical inclination, and the end face of described top (1) has a down dip to rear portion cutting edge (4) level from anterior cutting edge (3).
2. a kind of forging and pressing according to claim 1 are cut (pressure) shoulder and are used marking knife, and it is characterized in that: the radius of corner size range of oral area (3-1) rounding of described anterior cutting edge (3) is 5mm to 10mm.
3. a kind of forging and pressing according to claim 1 are cut (pressure) shoulder and are used marking knife, and it is characterized in that: the radius of corner of end (3-2) rounding of described anterior cutting edge (3) is of a size of 5mm to 10mm.
4. a kind of forging and pressing according to claim 1 are cut (pressure) shoulder and used marking knife, it is characterized in that: the inclination angle scope that described top (1) level has a down dip is that 3 degree are to 8 degree.
5. a kind of forging and pressing according to claim 1 are cut (pressure) shoulder and used marking knife, it is characterized in that: the limit, sword face two ends (2-1) of described cutting edge portion (2) is that 43 degree are to 47 degree with the vertical direction angle.
6. a kind of forging and pressing according to claim 1 are cut (pressure) shoulder and used marking knife, it is characterized in that: the sword face of described cutting edge portion (2) is that 40 degree are to 45 degree along cutting edge angle of inclination radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320123673 CN203155918U (en) | 2013-03-19 | 2013-03-19 | Mincing knife for forging and pressing cutting or pressing shoulder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320123673 CN203155918U (en) | 2013-03-19 | 2013-03-19 | Mincing knife for forging and pressing cutting or pressing shoulder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203155918U true CN203155918U (en) | 2013-08-28 |
Family
ID=49017142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320123673 Expired - Fee Related CN203155918U (en) | 2013-03-19 | 2013-03-19 | Mincing knife for forging and pressing cutting or pressing shoulder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203155918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909183A (en) * | 2014-03-12 | 2014-07-09 | 长葛市新世纪机电有限公司 | Cut-off device |
-
2013
- 2013-03-19 CN CN 201320123673 patent/CN203155918U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909183A (en) * | 2014-03-12 | 2014-07-09 | 长葛市新世纪机电有限公司 | Cut-off device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20160319 |