CN203254483U - Cylindrical punch knife - Google Patents
Cylindrical punch knife Download PDFInfo
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- CN203254483U CN203254483U CN 201320120609 CN201320120609U CN203254483U CN 203254483 U CN203254483 U CN 203254483U CN 201320120609 CN201320120609 CN 201320120609 CN 201320120609 U CN201320120609 U CN 201320120609U CN 203254483 U CN203254483 U CN 203254483U
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- punch knife
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Abstract
The utility model provides a cylindrical punch knife which solves the problem relative to a hollow knife made of a metal plate before and is high in mechanical strength, capable of being used in a single acting punch device and even a self-rotation type punch device, favorable in the aspects of production efficiency and manufacturing cost, good in sharpness, and small in punch resistance. The cylindrical punch knife comprises a cylinder part and a knife tip part. The cylinder part is formed by the facts that the two edges of the metal plate are in butt joint, and a concave part formed in one edge of the metal plate and a convex part formed in the other edge of the metal plate corresponding to the concave part are assembled in a cylindrical face. The knife tip part is formed at the axial end of the cylinder part. Preferably, the concave part and the convex part form a dovetail joint, the knife tip part forms more than two sharp pointed knives, or the knife tip part forms a corrugated knife.
Description
Technical field
The utility model relates to a kind of cylindric punch knife that can be applicable to punching machine, this punching machine makes punch knife and for example stationery, resin film class, metal forming class or the object that is laminated by stationery, resin film class, metal forming class (below, be referred to as " being perforated thing ") contacts and bore a hole.
Background technology
In the past, do not make punch knife around make in the situation of the axis rotation of self punch knife with being perforated that phase contact the single-acting punching machine (for example patent documentation 1, patent documentation 2) of boring a hole, rotate while the axis that makes punch knife around self in the punching machine (for example patent documentation 3, patent documentation 4) that (rotation) make punch knife rotation type of boring a hole with being perforated that phase contacts, application forms columned solid cutter, forms hollow knife cylindraceous.Because the resistance that is perforated thing when above-mentioned punch knife is subject to from perforation, therefore, the mechanical strength with respect to axial load, circumferential load of punch knife becomes problem, if in the situation of same outer diameter as, solid cutter is better.
But, viewpoint from material yield, machining period or leading time (Lead Time), compare by special cutter and cut out the solid cutter that outward appearance forms with bar steel, can utilize the hollow knife that the periphery of the special hollow tube method such as cut is made more favourable.In addition, particularly in single-acting situation, than becoming planar nose part and press the solid cutter that is perforated thing because of solid, the perforation resistance that embeds easily the hollow knife that is perforated thing because of the thinner nose part of hollow is less, therefore more favourable.
Fig. 7 shows an example of hollow knife.This hollow knife is disclosed by patent documentation 5, and it makes an ora terminalis of sleeve 110 cylindraceous become sharp and forms sharp pointed knife of point of a knife 112(to lopsidedness).So, think in the barrel surface of sleeve 110 resistance when accepting perforation.In addition, become to make and metallic plate is the mode that limit, two ends that cylindric bending forms forms gap 115 with along its length (axially) docks the structure that forms, and be formed with in the form of a ring rib 113 in the periphery of sleeve 110.And, record following content in patent documentation 5: the gap 115 of sleeve 110 forms when sleeve 110 carries out hole enlargement because of wedge when perforation, rib 113 is pressed and makes gap 115 closures, the result, the outer peripheral face of sleeve 110 and the friction that is perforated between the thing reduce, and becoming to extract easily penetrates into the hollow knife that is perforated in the thing.
In addition, because this hollow knife does not use the hollow tube that need to carry out periphery cutting etc., but make by the metallic plate that for example can utilize the decompressor punching press to make, therefore, compare with the situation of using hollow tube, production efficiency is good, and is also favourable on aspect material, the manufacturing cost.And in the hollow tube that circulates and metallic plate, the situation that the wall thickness of metallic plate is thinner is more, can utilize the thickness of metallic plate to form sharp thin cutter, can obtain to have the point of a knife of good sharpness.
Patent documentation 1: TOHKEMY 2000-301495 communique
Patent documentation 2: TOHKEMY 2000-141294 communique
Patent documentation 3: TOHKEMY 2006-943 communique
Patent documentation 4: Japanese kokai publication hei 5-138599 communique
Patent documentation 5: Japanese Unexamined Patent Application Publication 2009-505849 communique
The inventor has studied the situation that technological thought with the hollow knife of patent documentation 5 disclosed sheet-metals is applied to have the hollow knife of plural sharp pointed knife.
For example, for the hollow knife that has the sheet-metal of two above sharp pointed knifes in nose part, when perforation, point of a knife is accepted from the inhomogeneous axial load (resistance) that is perforated thing sometimes.At this moment, think that hollow knife is accepted axial load in the barrel surface of sleeve, its mechanical strength is subject to material, the wall thickness (thickness of slab) of sleeve, the impact of length.
In the hollow knife of this sheet-metal, when, causing easily to make the such axial displacement of two edge generation relativity shifts that forms this gap when having the gap at the length direction (axially) of sleeve.Excessive if this load has surpassed the imagination degree, then larger skew can occur and plastic deformation with respect to another sharp pointed knife in a sharp pointed knife vertically, thereby can not use as punch knife.In addition, can bear axial load in the mode of the supporting end opposite with the nose part of sleeve, still, because mechanical strength can reduce when length sleeve becomes longer, therefore, near not only distortion point of a knife of sleeve also causes bulk deformation easily.
Equally, effect has in the situation of rotation type of larger circumferential load when setting has the hollow knife of plural sharp pointed knife, ripple cutter and this hollow knife is applied to bore a hole, can in barrel surface, accept because from then produce, certainly be perforated the circumferential load that thing applies point of a knife.This circumferential load causes that easily the edge of sleeve from the point of a knife that forms the gap to metallic plate makes the such displacement of gap enlargement.Excessive if this load has surpassed the imagination degree, then sleeve meeting plastic deformation is used thereby can not be re-used as punch knife.
In addition, if the length direction (axially) at sleeve has the gap, then can make because of the undergauge of sleeve the perforation bits of the inboard (hollow bulb) that enters into sleeve be difficult to come off, the inboard of sleeve might be owing to residual obstruction of perforation bits, thereby become the such cutter of solid cutter, the resistance that causes boring a hole increases.
Summary of the invention
The purpose of this utility model is to provide following a kind of cylindric punch knife as hollow knife: this cylindric punch knife solves the problems referred to above relevant with the hollow knife of patent documentation 5 disclosed sheet-metals, mechanical strength for axial load, circumferential load is higher, can be made as the structure of the punching machine that is applicable to single-lift and even rotation type, and also comparatively favourable aspect production efficiency, manufacturing cost, and this cylindric punch knife sharpness is good and the resistance of boring a hole is less.
The inventor has studied the punch block mechanism that uses hollow knife in great detail, has found with two Novel structures that edge butt joints ground joint forms of metallic plate, thereby to have finished the utility model in that the metallic plate bending is being formed punch knife in the process cylindraceous.
Namely, the utility model provides a kind of cylindric punch knife, this cylindric punch knife comprises: cylindrical portion, it forms by two edge butt joints with metallic plate, and is formed at the recess at an edge in above-mentioned two edges of above-mentioned metallic plate and is formed at accordingly the protuberance at another edge in above-mentioned two edges of above-mentioned metallic plate in the barrel surface inner facies association with this recess; And nose part, it is formed at an axial end of this cylindrical portion.
In the utility model, preferably, above-mentioned recess and raised part constitute dovetail.In addition, preferably, above-mentioned nose part forms plural sharp pointed knife.In addition, also punch knife can be made as, above-mentioned nose part forms the ripple cutter.
Adopt the utility model, can obtain following a kind of cylindric punch knife: this cylindric punch knife is higher for the mechanical strength of axial load, circumferential load, can be applicable to punching machine single-lift, rotation type, and comparatively favourable aspect production efficiency, manufacturing cost, and this cylindric punch knife sharpness is good and the perforation resistance is less.
Description of drawings
Fig. 1 is the stereogram of an example of expression cylindric punch knife of the present utility model.
Fig. 2 is the front view of expression cylindric punch knife shown in Figure 1.
Fig. 3 is the stereogram of other examples of expression expression cylindric punch knife of the present utility model.
Fig. 4 is the front view of expression cylindric punch knife shown in Figure 3.
Fig. 5 is recess outside presentation graphs 1～example shown in Figure 4 and the schematic diagram of the composite construction example between the protuberance.
Fig. 6 is recess outside presentation graphs 1～example shown in Figure 5 and the schematic diagram of the composite construction example between the protuberance.
Fig. 7 is the punch knife front view partly that expression is chosen from Fig. 9 of patent documentation 5.
Description of reference numerals
11, punch knife; 11a, sleeve; 11b, point of a knife; 11c, protuberance; 11d, recess; 11e, docking section; 11f, docking section; 31, punch knife; 31a, sleeve; 31b, point of a knife; 31c, protuberance; 31d, recess; 31e, docking section; 31f, docking section; 110, sleeve; 112, point of a knife; 113, rib; 115, gap; θ, the angle of the v-groove.
The specific embodiment
Technical characterictic of the present utility model is that two edge butt joint ground that will form the metallic plate of punch knife cylindraceous engage the composite construction that forms.Cylindric punch knife of the present utility model comprises: cylindrical portion, and it forms by two edge butt joints with metallic plate; And nose part, it is formed at an axial end of this cylindrical portion.And, in the forming process of above-mentioned cylindrical portion, cylindrical portion is had be formed at above-mentioned metallic plate an edge recess and be formed at accordingly the protuberance at another edge with this recess, recess and protuberance are made up in the barrel surface of the cylindrical portion that wish forms.
Be used for the composite construction that is formed by recess and protuberance of two edge join of metallic plate do not recognize, the important technological thought of the present utility model of the hollow knife of patent documentation 5 disclosed sheet-metals just.Can effectively prevent the distortion of sleeve by the composite construction of this recess and protuberance.For example, even be subject to inhomogeneous axial load that point of a knife is applied at two edges of metallic plate and relativity shift and wanting in the situation of in the axial direction displacement, because recess and protuberance be mutually combination in barrel surface as the zero sheet of jigsaw puzzle (jigsaw puzzle), thereby can suppress reliably above-mentioned displacement on axially, and can prevent the plastic deformation of not expecting of sleeve.
In addition, for example, make in the larger circumferential load that is subject to point of a knife is applied near the gap wish between the edge of point of a knife one side and get than away from the gap enlargement between the edge of point of a knife one side in the large situation, bring into play the each other effect that rotatablely moves in barrel surface that prevents owing to the bight of protuberance and recess connect, therefore can suppress distortion that the hole enlargement of cylindrical portion causes greatly to the degree of the obstacle that becomes perforation.For this recess and protuberance in order to prevent rotatablely moving and situation interact with each other in the periphery, its be subject to compare situation about making near the circumferential load of the gap-closing at the edge of point of a knife one side away from the edge of point of a knife one side under also be identical.
In the utility model, consideration selects above-mentioned recess and protuberance better with respect to the load of punch knife, service condition etc., for example, above-mentioned recess and protuberance can be set as the shapes such as triangle shown in (C) of the semicircle shown in (B) of trapezoidal, the Fig. 5 shown in (A) of quadrangle, Fig. 5 of Figure 1 and Figure 2 or half elliptic or Fig. 5.If above-mentioned shape then can make by forming the protuberance corresponding with recess recess and protuberance prevent each other in the axial direction displacement in barrel surface.In addition, for example, if above-mentioned recess and protuberance are the shapes such as the balloon with notch shown in (C) of the balloon shown in (B) of the T word shape shown in (A) of Fig. 3 and inverted trapezoidal shown in Figure 4, Fig. 6, Fig. 6 or mushroom, Fig. 6 or mushroom, then not only can prevent above-mentioned displacement on axially, can also be interact with each other to prevent rotatablely moving in the periphery.
In addition, when the structure of the strain that in advance docking site at two edges of the combination part between recess and the protuberance, metallic plate is made as the degree that can make sleeve not affect perforation, can more effectively utilize the flexible of metallic plate, so preferred.For example, more easy method is, the gap of appropriateness is set between recess and protuberance, and do not utilize in advance welding, bonding etc. this docking site is fixed.In addition, recess and protuberance can also be made as the composite construction that utilizes interference fits, interference fit to form, thereby can improve the hole enlargement for sleeve, the mechanical strength of undergauge.
Below, specifically enumerate an example of cylindric punch knife of the present utility model, and be described in detail.
For example, in the situation with two point of a knife 11b, if make docking section 11f corresponding with the position of the lowest point that is consisted of by two point of a knife 11b, the hook at the edge of the metallic plate when then avoiding boring a hole easily.In addition, point of a knife is being set as in the situation of a sharp pointed knife, is preferably making docking section (position that is equivalent to docking section 11f) with corresponding apart from point of a knife end position farthest at the nose part place.Thus, not only has the effect of avoiding above-mentioned hook, even and be subject to larger axial load in when perforation and also be difficult for making cylindrical portion such distortion that bends.
In addition, make two edges of the above-mentioned metallic plate that is bent processing combined at the position of docking section 11e, 11f.Sleeve 11a with the structure of the docking section 11e of two edge join of this metallic plate key character of the present utility model just.This docking section 11e becomes another edge of edge of the metallic plate that makes the recess 11d that is provided with the angle-shaped groove shape and the metallic plate of the protuberance 11c that is provided with the dihedral convex in the mode corresponding with this recess 11d at the structure of the barrel surface inner facies association of sleeve 11a cylindraceous.
This composite construction sleeve 11a axially on can only be positioned at a position, still, also can be located at a plurality of positions for many conditions such as the total length that adapts to punch knife, perforation load.In addition, " in barrel surface " refers to following mode: above-mentioned recess and raised part can not extend out to than the outer radial outside of cylinder (sleeve 11a) degree of the obstacle that becomes perforation.
Even in that the point of a knife 11b effect to punch knife 11 has inhomogeneous axial load owing to the composite construction between this protuberance 11c and the recess 11d, also can suppress the relative displacement of the two edges of metallic plate, thereby can prevent the distortion of sleeve 11a.For example, certainly being perforated thing to the sharp pointed knife shown in the right side among point of a knife 11b(Fig. 4 of a side with protuberance 11c) in the situation of the resistance that effect is larger, vertically displacement is wanted at the edge of the side with protuberance 11c of metallic plate.
But owing to the recess 11d after making up with protuberance 11c continues and protuberance 11c fastening, thereby recess 11d and protuberance 11c want integratedly displacement in sleeve 11a face.Thus, can prevent from only having the in the axial direction displacement of edge of metallic plate of the side of protuberance 11c.Therefore, be difficult for also vertically that the punch knife 11 of the sleeve 11a of distortion is difficult for being out of shape because of common inhomogeneous axial load even have the axial load of being subject to.
In the combination between above-mentioned recess 11d and protuberance 11c, for among Fig. 4 as shown in the θ, by the intersect edge of the edge of recess 11d and metallic plate and for the angle (hereinafter referred to as " angle of the v-groove ") of the real part that consists of, in other words for by the intersect edge of the edge of protuberance 11c and metallic plate and for the angle of the imaginary part that consists of, on mechanics, 90 degree (with respect to axially at right angles) are the easiest to overcome axial load, more more is difficult to overcome axial load near 0 degree (with respect to circumferentially at right angles).
When this angle of the v-groove θ is 90 degree when above, can overcome the circumferential load that makes sleeve 11a undergauge, but can not overcome the circumferential load that makes sleeve 11a hole enlargement at mechanics.Thereby, be the punch knife that the single-acting punching machine of axial load has as main resistance, be preferably have recess 11d that the angle of the v-groove θ with 90 degree form and and the protuberance 11c that forms accordingly of this recess 11d between the punch knife 11 of composite construction.
In addition.In punch knife 11, as long as the wedging effect in when perforation for not making the degree that is difficult to extract of punch knife, just preferably makes sleeve 11a be pre-formed as can hole enlargement.For example, as mentioned above, on docking section 11e, 11f, form and not utilize in advance welding, the structure that two edges of metallic plate are fixing such as bonding.Thus, can utilize the flexible of metallic plate, for example, the situation of perforation bits of pressing to discharge the inboard (hollow bulb) that enters into sleeve 11a in wish from an end utilization opposite with nose part is inferior, because sleeve 11a can carry out strain and hole enlargement, therefore discharge easily the perforation bits.
Then, enumerate and have in effect that the combination example between the deemed appropriate recess and protuberance describes in the situation that makes the such circumferential load of cylindric punch knife hole enlargement.
Identical with above-mentioned punch knife 11, the punch knife 31 shown in Fig. 3 (stereogram), Fig. 4 (front view) comprises: sleeve 31a(cylindrical portion); And nose part, it is formed with two sharp point of a knife 31b(sharp pointed knifes).This nose part both can for a sharp pointed knife, also can form the ripple cutter.In addition, on one side be perforated the punch knife that the punching machine of the rotation type that thing bores a hole has for one side draw cut, consider that draw cut is perforated the required cutter number of thing, preferably it has a plurality of sharp pointed knifes or is the ripple cutter.
In addition, punch knife 31 forms at the position grouping of docking section 31e, 31f by two edges that make the metallic plate that is bent processing.Punch knife 31 has following structure:
On the 31e of this docking section, another edge that the mode with corresponding with this recess 31d of edge of the recess 31d that is provided with the dovetail groove shape of metallic plate and metallic plate is provided with the protuberance 31c of dovetail head makes up in the barrel surface of sleeve 31a.In addition, identical with punch knife 11, preferably being set as in advance sleeve 31a can carry out elastic displacement and hole enlargement a little at docking section 31e, 31f place.
In the composite construction between the recess that belongs to above-mentioned dovetail and protuberance, recess and protuberance play a role with the horizontal level of a mutual relativity ground constraint side separately and the mode of upright position.In punch knife 31, the composite construction that is combined by recess 31d and protuberance 31c of the character by utilizing this dovetail prevents that two edges of metallic plate from moving in the axial direction or at the relative position that makes progress in week in sleeve 31a face.
That is, recess 31d and protuberance 31c want each other by continuing each other fastening in sleeve 31a face integratedly displacement or each other wish eliminate moment in sleeve 31a face.Thus, can prevent only edge in the edge of metallic plate in sleeve 31a face in the axial direction or at circumferential top offset.Therefore, though have the punch knife 31 of sleeve 31a be subject to axial load or circumferentially load also be difficult for the common circumferential load that common axial load or rotation type because of single-lift generation produce and be out of shape.
On the recess 31d of above-mentioned dovetail groove shape, the axial load of effect in the time of should considering to bore a hole as angle of the v-groove θ shown in the θ, that the above-mentioned shape of falling the Eight characters or above-mentioned trapezoidal formation tilt in Fig. 8, circumferentially the mechanical strength of load and recess, protuberance decides.At punch knife 31 for to compare in the situation of the punch knife that rotation type has of more paying attention to circumferential load with axial load, because mechanical strength can reduce when this angle of the v-groove θ too spends near 0, therefore, angle of the v-groove θ is preferably 40 degree～85 degree, more preferably 50 degree～75 degree.In addition, for to compare in the situation of the single-lift punch knife that has of more paying attention to axial load with circumferential load, preferably angle of the v-groove θ is made as larger 70 degree～85 degree at punch knife 31.
In addition, punch knife of the present utility model is compared with above-mentioned such hollow knife of hollow tube that uses for using the hollow knife of metallic plate, and it is favourable on all many-sides such as production efficiency, material cost, market circulation, sharpness.Particularly, effect that the thin-walled property of point of a knife produces, that reduce the perforation resistance is very important, and the contribution degree of the densification of this Service life for punch knife, punching machine, energy-saving etc. is larger.For example, can straitly be formed for consisting of with the metallic plate that thickness of slab is thinner than the thickness of hollow tube the inclined-plane of the nose angle relevant with the sharpness of point of a knife.Although it is narrower to consist of the inclined-plane of this nose angle, mechanical strength is lower,, correspondingly can bring larger effect as described below, that is, the perforation resistance when the point of a knife incision is perforated thing can diminish, and the resistance when next nose part embeds is also diminished thereupon.
Thereby for the punch knife of use metallic plate of the present utility model, the resistance of it can being bored a hole is made as less, and can obtain good sharpness.In addition, in the utility model, the thickness of slab of metallic plate is preferably 0.2mm～1.0mm, and thickness of slab is more thin more can to reduce the perforation resistance, and thickness of slab is more thick more can elevating mechanism intensity.Be in the soft or thinner situation being perforated thing, the thickness of slab of advantageous applications 0.05mm～0.2mm is in hard or the thicker situation being perforated thing, the thickness of slab that advantageous applications 1.0mm is above.
Claims (4)
1. a cylindric punch knife is characterized in that,
This cylindric punch knife comprises:
Cylindrical portion, it forms by two edge butt joints with metallic plate, and is formed at the recess at an edge in above-mentioned two edges of above-mentioned metallic plate and is formed at accordingly the protuberance at another edge in above-mentioned two edges of above-mentioned metallic plate in the barrel surface inner facies association with this recess; And
Nose part, it is formed at an axial end of this cylindrical portion.
2. cylindric punch knife according to claim 1 is characterized in that,
Above-mentioned recess and raised part constitute dovetail.
3. cylindric punch knife according to claim 1 and 2 is characterized in that,
Above-mentioned nose part forms plural sharp pointed knife.
4. cylindric punch knife according to claim 1 and 2 is characterized in that,
Above-mentioned nose part forms the ripple cutter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-148974 | 2012-07-03 | ||
| JP2012148974A JP5988482B2 (en) | 2012-07-03 | 2012-07-03 | Drilling device having a cylindrical drilling blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203254483U true CN203254483U (en) | 2013-10-30 |
Family
ID=49467087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120609 Expired - Fee Related CN203254483U (en) | 2012-07-03 | 2013-03-15 | Cylindrical punch knife |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5988482B2 (en) |
| CN (1) | CN203254483U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646732A (en) * | 2013-11-21 | 2015-05-27 | 珠海格力电器股份有限公司 | Drill bit and drilling device |
| CN104741928A (en) * | 2013-12-25 | 2015-07-01 | 珠海格力电器股份有限公司 | Tool bit, drilling and flanging tool and drilling and flanging method |
| CN107088920A (en) * | 2017-06-13 | 2017-08-25 | 泰马克精密铸造（苏州）有限公司 | Blanking units for being punched Bottle cap spacer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532672Y2 (en) * | 1975-09-19 | 1980-08-04 | ||
| JP2006000943A (en) * | 2004-06-15 | 2006-01-05 | Daido Kogyo Co Ltd | Punching device |
| JP2009166149A (en) * | 2008-01-11 | 2009-07-30 | Mitsubishi Cable Ind Ltd | Belt-shaped punching blade |
-
2012
- 2012-07-03 JP JP2012148974A patent/JP5988482B2/en active Active
-
2013
- 2013-03-15 CN CN 201320120609 patent/CN203254483U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646732A (en) * | 2013-11-21 | 2015-05-27 | 珠海格力电器股份有限公司 | Drill bit and drilling device |
| CN104741928A (en) * | 2013-12-25 | 2015-07-01 | 珠海格力电器股份有限公司 | Tool bit, drilling and flanging tool and drilling and flanging method |
| CN107088920A (en) * | 2017-06-13 | 2017-08-25 | 泰马克精密铸造（苏州）有限公司 | Blanking units for being punched Bottle cap spacer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5988482B2 (en) | 2016-09-07 |
| JP2014008593A (en) | 2014-01-20 |
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| 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: 20131030 Termination date: 20200315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |