CN201455445U - Double-metal band saw reinforcing teeth for enhancing weld strength - Google Patents
Double-metal band saw reinforcing teeth for enhancing weld strength Download PDFInfo
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- CN201455445U CN201455445U CN2009200645966U CN200920064596U CN201455445U CN 201455445 U CN201455445 U CN 201455445U CN 2009200645966 U CN2009200645966 U CN 2009200645966U CN 200920064596 U CN200920064596 U CN 200920064596U CN 201455445 U CN201455445 U CN 201455445U
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- 239000002184 metal Substances 0.000 title claims abstract description 15
- 230000002708 enhancing effect Effects 0.000 title abstract 2
- 230000003014 reinforcing effect Effects 0.000 title abstract 2
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000002787 reinforcement Effects 0.000 claims description 8
- 241001347978 Major minor Species 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 9
- 230000004927 fusion Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000926 A-3 tool steel Inorganic materials 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000003464 cuspid Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to double-metal band saw reinforcing teeth for enhancing weld strength, which consist of a back material part and a tooth material part, a tooth edge comprises a third back-angle edge, a second back-angle edge and a front edge in sequence, the lower end of the third back-angle edge is connected with a tooth groove, and a first back-angle edge is arranged between the top end of the front edge and the second back-angle edge, thereby forming a tooth shape with three back angles. The first back angle a2 is larger than the second back angle a3, the second back angle a3 is smaller than the third back angle a4, wherein the a2 is more than or equal to 20 degrees and less than or equal to 45 degrees, the a3 is more than or equal to 10 degrees and less than or equal to 35 degrees, the a4 is more than or equal to 45 degrees and less than or equal to 85 degrees, the tooth tip height of the first back angle is 0.2mm to 0.40mm, the included angle a5 between the cutting edge and the cutting direction is more than or equal to 70 degrees and less than or equal to 85 degrees, and the deflection angle a6 of the main blade and the auxiliary blade is more than or equal to 3 degrees and less than or equal to 25 degrees. The utility model has good flexibility, can maintain high-efficiency and high-speed cutting when used for cutting work pieces with complex shapes, and prolongs the service life of the saw band.
Description
Technical field
The utility model relates to bi-metal bandsaw blades, further is meant its broached-tooth design.
Background technology
Along with manufacturing growing, the application of bi-metal bandsaw blades is more and more wider, and simultaneously, the variation of sawing workpieces is also had higher requirement to the flute profile and the cutting-rate of sawing.
In the prior art, bi-metal bandsaw blades is made up of high-speed steel crown and spring steel backing, weld seam between crown and the backing is to finish by electron beam welding, Laser Welding or other welding manners, because tooth portion fillet approximately can not continue to use to 0.25mm during sawing, so the height of crown high-speed steel part generally is controlled between the 1mm-1.7mm.Because crown part high-speed steel height is limited, weld seam is nearer relatively from crown, fusion length is shorter relatively under the situation of orthodont, generally have only about 1mm-1.7mm, the intensity higher speed steel of weld seam and heat affected zone thereof or backing part is all low simultaneously, therefore in the bi-metal bandsaw blades sawing process, if the sawing vibrations are excessive, or by impure higher in the sawing material, then crown is easy to disconnect at weld metal zone or heat affected area (join domain of 0.05mm-0.2mm and high-speed steel or backing outside the edge of weld seam 3) of intensity most fragile, be commonly called as " drawing tooth ", this phenomenon is through No. 45 steel of sawing of being everlasting, and occurs in A3 steel and the complex-shaped steel sawing.
In order to address the above problem, the applicant develops a kind of two relief angle flute profiles as shown in Figure 1, but in use there is a pair of contradiction in this flute profile, if make the weld seam long enough, then first relief angle is as far as possible little, but after first relief angle reduces, the incision ability of crown just descends greatly, therefore this flute profile is in application process, and the sort of very easy cutting of only suitable sawing requires little thick-wall tube to cutting force; Spend to 45 degree if instead first relief angle is increased to 30, then the length of weld seam can not obviously increase again, and the intensity at weld seam position can not significantly improve, and does not reach required design strength.
The utility model content
The technical problems to be solved in the utility model is, the deficiency that exists at prior art, but the bi-metal bandsaw blades of a kind of reinforcement of weld intensity of design is strengthened tooth, the sawing that it has pliability preferably and still can keep efficient high-speed when the sawing complex-shaped workpieces.
The technical solution of the utility model is, but the bi-metal bandsaw blades of described reinforcement of weld intensity is strengthened tooth and is made of backing part 2 and the tooth material part 1 that is welded on this backing part, tip edge has the 3rd back corner edge 11 successively, the second back corner edge 9, leading edge 12, and between described the 3rd back corner edge 11 and the second back corner edge 9 knuckle 10 is arranged, 11 times termination roller seating spaces of the 3rd back corner edge line 6, its design feature is, between described leading edge 12 tops and the second back corner edge 9, be provided with the first back corner edge 7 and make flute profile become three back angular shapes, between the second back corner edge 9 and the first back corner edge 7 knuckle 8 is arranged, and the first relief angle a2 is greater than the second relief angle a3, the second relief angle a3 is less than the 3rd relief angle a4, and has:
20°≤a2≤45°，
10″≤a3≤35°，
45°≤a4≤85°，
The crown height h1 of first relief angle is between 0.2mm-0.40mm, and the angle a5 of cutting edge and cutting direction is: 70 °≤a5≤85 °, major-minor drift angle a6 is: 3 °≤a6≤25 °.
Further, the weld seam 3 of connection backing part 2 and tooth material part 1 and heat affected area are at the position of the 3rd relief angle a4, backing part 2 is between the 1.0mm-1.7mm with weld seam 3 centers that tooth material part 1 is welded mutually from the height of crown (cutting edge 5), and weld seam 3 length w1 are 1.7mm-2.5mm.
The second back corner edge 9 can be camber line, also can be straight line; The 3rd back corner edge 7 can be camber line, also can be straight line.
Below the utility model made further specify.
The utility model has increased a crown (i.e. the corresponding construction of the first back corner edge 7) that little entrance angle is arranged in the cutting edge position on the basis of existing two relief angle flute profiles, we claim the flute profile of this structure to be three relief angle flute profiles or to strengthen tooth flute profile (as Fig. 2 or Fig. 3); And by dividing the beat (as Fig. 4) of tooth, increase major-minor drift angle a6, reduce the relief angle of sawing and the sawing resistance that cause sawing the major-minor drift angle.
As shown in Figures 2 and 3, because in the conventional sawing, the crown fillet at cutting edge 5 places just loses the sawing ability fully about 0.25, therefore, the crown height h1 of the first relief angle a2 can be designed to the height of 0.20mm-0.45mm, and in order to increase incision power, adapt to difficult sawing of cutting material, the first relief angle a2 is increased between 20 degree and 45 degree from 10 seconds-20 degree of angular range of first relief angle of original two relief angles.According to the difference of sawing material, can suitably strengthen anterior angle a1 simultaneously, generally anterior angle a1 can be arranged on 3 and spend between 7 degree.The sawing material is hard more, and the angle of the first relief angle a2 should be big more, the highest bringing up to about 45 degree (consistent with orthodont).
Fusion length W1 design is between 1.7mm-2.5mm, if be used for the solid and impurity less material of sawing, selecting that fusion length is suitable is little, as be selected between the 1.8mm-2mm, if but at cause vibrations bigger by the sawing material, then with the W1 proper extension, under same seam organization situation, weld strength is directly proportional with fusion length.
The second relief angle a3 designs according to the required intensity of weld seam and the height of crown, and the crown height of high-speed steel is generally between 1.1mm-1.5mm; If the amount of high-speed steel is many, can suitably increase the angle of the second relief angle a3, fewer as the amount of high-speed steel, then suitably reduce the angle of a3, make the latter and the former reach suitable weld strength.Therefore, by reducing the second relief angle a3, reduce the slope that the second relief angle a3 descends, but the length of significant prolongation weld seam improves the intensity of weld seam, it is not enough to remedy the weld strength that the amount of high-speed steel causes less.The second relief angle a3 and the first relief angle a2 be connected with being connected of the second relief angle a3 and the 3rd relief angle a4 the time, cause stress to concentrate in order to prevent the shape sudden change, preferably adopt two circular arcs that these several sections lines are connected.The second relief angle a3 only plays a supporting role to sawing because sawing is not directly formed cutting edge, and therefore the second relief angle a3 edge can adopt circular arc or straight line,, only need to guarantee continuous transition between each bar edge line.But, need the angle of the second relief angle a3 is controlled at 10 seconds between 35 degree, and the second relief angle a3 is less than the first relief angle a2 in order to guarantee the intensity of weld seam.
The 3rd relief angle a4 has sufficient chip space in order to satisfy roller seating space, must be big as far as possible, therefore, according to the tooth pitch designing requirement, the 3rd relief angle a4 chooses 45 and spends between 85 degree and be advisable, and becomes the little flute profile of tooth as 4/6tpi, can design 80 at the 3rd relief angle a4 and spend between 85 degree; And for the canine tooth of 0.75tpi, chip space is enough big, therefore, and the 3rd relief angles of optional 45 degree, and second relief angle is reduced, to prolong fusion length.
Because fusion length is longer, branch tooth deforming position among Fig. 2 is even more important, if divide the tooth position too low, so, divide the tooth span access location length to differ, thereby cause the fluctuation of branch tooth amount very big, if divide the tooth position too high, because deformation length is short, the support strength of edgewise bend is too concentrated, divide the also resilience easily of tooth amount, through groping test repeatedly, branch tooth height h4 should be advisable at 2.5mm-5.0mm among Fig. 3; Referring to Fig. 4, divide the tooth amount s can be by normal amount control, i.e. s=0.38t ± 0.05mm, if it is big to be cut the material internal stress, the card saw then divides the tooth amount suitably to increase, i.e. s=0.50t ± 0.05mm (wherein t represents sawtooth thickness or saw band thickness, referring to Fig. 4) easily.
If cooperating the influence of stock-removing efficiency of two angles of angle a5 of major-minor drift angle a6 among the figure five and cutting edge and cutting direction is very big. a5 is greater than 85 degree, perhaps a6 is too small, in sawing process, touch the resilience of cutting workpiece crown, the side friction face of sawing workpieces and saw blade is excessive with causing, the face that severe patient crown rear end contacts with workpiece is also bigger with the face of workpiece friction than workpiece front end, the suffered resistance of saw blade is very big when causing sawing, thereby after causing the angle initialization of cutting oblique or otherwise inefficacy .a5 and a6 suitable, owing to the frictional force that the crown unit are is suffered is less relatively, even because sawing machine rigidity deficiency, cause vibrations, crown also can have certain releasability, and can not cause the damage of crown. simultaneously because the frictional force of being brought during sawing is less relatively, can accelerate the speed of saw blade, workpiece is cut fast the setting range of .a6 and generally spend between 25 degree, and the setting range of a5 is between 70 degree and 85 degree 3.
This saw blade not only can be applied to the sawing of complicated shape material, and, by angle (as a6 being arranged on 20 degree) that improves a6 and the angle (a5 is arranged on about 75 degree) that reduces a5, also can be widely used in the sawing of solid material, solid material and pipe fitting have been solved, the problem that the Saw of section bar secodont can not be shared.
Can be between 20m/min-100m/min with the speed of service of the saw band of this flute profile, the highest orthodont blade speed than other is high by about 40%, and blade life is when the various metal material of sawing shape, and the life-span is higher by about 30% than conventional saw blade.When practical heartwood material, when moving on the not good sawing machine of rigidity, its sawing effect is higher by about 20% than the life-span of conventional tooth.When practical heartwood material, rigidity is better, and when moving on the sawing machine that operates steadily, its sawing life-span is suitable with conventional rack saw bar.
As known from the above,, the utility model strengthens tooth but being a kind of bi-metal bandsaw blades of reinforcement of weld intensity, the sawing that it has pliability preferably and still can keep efficient high-speed when the sawing complex-shaped workpieces, and saw band prolongs service life.
Description of drawings
Fig. 1 is two relief angle flute profiles of prior art.
Fig. 2 is flute profile master's TV structure schematic diagram of a kind of embodiment of the utility model;
Fig. 3 is the related angle of flute profile shown in Figure 2, highly mark illustrates;
Fig. 4 be flute profile shown in Figure 2 part the tooth vertical view on the left side;
Fig. 5 is the right view after flute profile composition diagram 6 shown in Figure 2 or saw band shown in Figure 7 part tooth on the left side and begin;
Fig. 6 is the front view of the saw band of flute profile composition shown in Figure 2, and wherein the saw band between lines L1, the L2 partly is the flute profile in the one-period;
Fig. 7 is the plan structure schematic diagram of saw band shown in Figure 6, and wherein the saw band between lines L1, the L2 partly is the flute profile in the one-period.
In the drawings:
1-tooth material (high-speed steel part), the 2-backing, the 3-weld seam,
4-divides the tooth deformation position, the 5-cutting edge, and the 6-roller seating space,
7-first back corner edge, 8, the 10-knuckle,
The 9-second back corner edge, 11-the 3rd back corner edge, the 12-leading edge,
The a1-anterior angle, a2-first relief angle, a3-second relief angle,
A4-the 3rd relief angle, the angle of a5-cutting edge and cutting direction,
A6-major-minor drift angle, a7-divides the deflection angle of tooth, the h1-first relief angle height,
H2-tooth material height, the h3-second relief angle height, h4-divides the tooth position to the crown height,
The W1-fusion length, S-divides the tooth amount, t-sawtooth thickness.
The specific embodiment
Extremely shown in Figure 5 as Fig. 2, but the bi-metal bandsaw blades of reinforcement of weld intensity described in the utility model is strengthened tooth and is made of backing part 2 and the tooth material part 1 that is welded on this backing part, tip edge has the 3rd back corner edge 11, the second back corner edge 9, leading edge 12 successively, and 11 times termination roller seating spaces of knuckle 10, the three back corner edge line 6 is arranged between described the 3rd back corner edge 11 and the second back corner edge 9; Between described leading edge 12 tops and the second back corner edge 9, be provided with the first back corner edge 7 and make flute profile become three back angular shapes, between the second back corner edge 9 and the first back corner edge 7 knuckle 8 is arranged, and the first relief angle a2 is greater than the second relief angle a3, and the second relief angle a3 is less than the 3rd relief angle a4, and has:
20°≤a2≤45°，
10″≤a3≤35°，
45°≤a4≤85°，
The crown height h1 of first relief angle is between 0.2mm-0.40mm, and the angle a5 of cutting edge and cutting direction is: 70 °≤a5≤85 °, major-minor drift angle a6 is: 3 °≤a6≤25 °.
Further, connect the weld seam 3 of backing part 2 and tooth material part 1 and heat affected area at the position of the 3rd relief angle a4, and the weld seam center from the height of crown about between the 1.0mm-1.7mm. fusion length w1 is between 1.7mm-2.5mm.
The second back corner edge 9 and the 3rd back corner edge 7 are straight line.
Horizontal line among Fig. 3,4,5 is the parallel lines of saw band backing hemline, and vertical line is perpendicular to described horizontal line segment.
Claims (3)
1. but the bi-metal bandsaw blades of a reinforcement of weld intensity is strengthened tooth, by backing part (2) be welded on tooth material part (1) formation on this backing part, tip edge has the 3rd back corner edge (11) successively, the second back corner edge (9), leading edge (12), and between described the 3rd back corner edge (11) and the second back corner edge (9) knuckle (10) is arranged, the 3rd back corner edge (11) is termination roller seating space line (6) down, it is characterized in that, between described leading edge (12) top and the second back corner edge (9), be provided with the first back corner edge (7) and make flute profile become three back angular shapes, between the second back corner edge (9) and the first back corner edge (7) knuckle (8) is arranged, and first relief angle (a2) is greater than second relief angle (a3), second relief angle (a3) is less than the 3rd relief angle (a4), and has:
20°≤a2≤45°，
10″≤a3≤35°，
45°≤a4≤85°，
The crown height (h1) of first relief angle is between 0.2mm-0.40mm, and the angle of cutting edge and cutting direction (a5) is: 70 °≤a5≤85 °, major-minor drift angle (a6) is: 3 °≤a6≤25 °.
2. but strengthen tooth according to the bi-metal bandsaw blades of the described reinforcement of weld intensity of claim 1, it is characterized in that, backing part (2) is between the 1.0mm-1.7mm with weld seam (3) center that tooth material part (1) is welded mutually from the height of crown, and weld seam (3) length w1 is 1.7mm-2.5mm.
3. but strengthen tooth according to the bi-metal bandsaw blades of the described reinforcement of weld intensity of claim 1, it is characterized in that, the second back corner edge (9), the 3rd back corner edge (7) are camber line or straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200645966U CN201455445U (en) | 2009-05-26 | 2009-05-26 | Double-metal band saw reinforcing teeth for enhancing weld strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200645966U CN201455445U (en) | 2009-05-26 | 2009-05-26 | Double-metal band saw reinforcing teeth for enhancing weld strength |
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| Publication Number | Publication Date |
|---|---|
| CN201455445U true CN201455445U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200645966U Expired - Fee Related CN201455445U (en) | 2009-05-26 | 2009-05-26 | Double-metal band saw reinforcing teeth for enhancing weld strength |
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| Country | Link |
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| CN (1) | CN201455445U (en) |
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2009
- 2009-05-26 CN CN2009200645966U patent/CN201455445U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20140526 |