CN114367714B - Laser brazing method for saw bit tool bit - Google Patents
Laser brazing method for saw bit tool bit Download PDFInfo
- Publication number
- CN114367714B CN114367714B CN202210173945.8A CN202210173945A CN114367714B CN 114367714 B CN114367714 B CN 114367714B CN 202210173945 A CN202210173945 A CN 202210173945A CN 114367714 B CN114367714 B CN 114367714B
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- CN
- China
- Prior art keywords
- bit
- cutter head
- laser
- teeth
- saw blade
- Prior art date
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- 238000005219 brazing Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000004907 flux Effects 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000005336 cracking Methods 0.000 claims abstract description 7
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 230000007547 defect Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 description 13
- 238000003825 pressing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- -1 but not limited to Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a laser brazing method of a saw blade bit, which comprises the following steps: (1) Providing a saw blade and a cutter head, placing the cutter head on teeth of the saw blade, and arranging brazing flux between the cutter head and the teeth where the cutter head is positioned; and (2) the laser irradiates the cutter head, and the cutter head is heated by the laser in a radiation heating mode, so that the cutter head is heated and simultaneously conducts heat to the brazing flux, and the brazing flux is melted to fix the cutter head and the teeth where the cutter head is positioned. The laser brazing method of the saw blade bit solves the problem of pulling force so as to effectively prevent deformation and even cracking.
Description
Technical Field
The invention relates to the field of saw blade machining, in particular to a laser brazing method for a saw blade tool bit.
Background
Saw blades are widely used in a variety of cutting applications, such as wood working. To increase the service life of the saw blade, it is common practice to weld a cutting head made of superhard material (such as, but not limited to, diamond or alloy) into a pre-machined tooth on the saw blade using high frequency welding. Because the tool bit adopts superhard materials to make, and the saw bit is that the flexibility is better and the stereoplasm is low material of tool bit relatively, this combination mode can effectively increase the life of saw bit.
Wherein, during the high-frequency welding, the heat applied to the tooth and the cutter head causes the bonding position of the tooth for bonding with the cutter head to melt, thereby fixing the tooth and the cutter head together. However, since the materials of the cutter head and the saw blade are different, the expansion coefficients of the cutter head and the saw blade are different, and the expansion coefficients generally follow the rule of becoming smaller along with the increase of hardness, the cutter head and the teeth welded together at high frequency have a pulling force at the joint of the cutter head and the teeth due to the difference of the expansion coefficients in the process of recovering to normal temperature, and the pulling force causes deformation of the joint of the cutter head and the teeth, and even causes cracking of the joint.
Accordingly, there is a strong need for a laser brazing method for saw blade tips that addresses the pulling forces to effectively prevent deformation and even cracking.
Disclosure of Invention
The invention aims to provide a laser brazing method for a saw blade bit, which solves the problem of pulling force to effectively prevent deformation and even cracking.
In order to achieve the above object, the laser brazing method of the saw blade bit of the present invention comprises the steps of:
(1) Providing a saw blade and a cutter head, placing the cutter head on teeth of the saw blade, and arranging brazing flux between the cutter head and the teeth where the cutter head is positioned; and
(2) The laser is used for irradiating the cutter head, and the cutter head is heated in a radiation heating mode by the laser, so that the cutter head is heated and simultaneously conducts heat to the brazing flux, and the brazing flux is melted to fix the cutter head and the tooth where the cutter head is positioned.
Preferably, in step (2), the laser is reciprocally moved over the tool bit.
Preferably, the laser moves reciprocally over the tool bit at a constant speed.
Preferably, the laser brazing method of the saw blade bit of the invention further comprises a jacking step of jacking one side of the bit facing away from the teeth, wherein the jacking step is positioned between the step (1) and the step (2).
Preferably, the laser is irradiated from the thickness direction of the saw blade at the end face of the tool bit.
Preferably, one laser is irradiated from the forward direction of the thickness direction of the saw blade to one end face of the tool bit, and the other laser is irradiated from the reverse direction of the thickness direction of the saw blade to the opposite end face of the tool bit.
Preferably, the laser brazing method of the saw blade bit of the invention further comprises the following steps (3): the saw blade performs stepping movement of one tooth, so that the tooth of the next tool bit to be soldered moves to a position opposite to the laser; and (3) continuously repeating the steps (2) and (3) until all teeth on the saw blade are brazed with the tool bit.
Preferably, the saw blade performs a step movement in a rotational or moving manner.
Preferably, in the step (1), firstly, a brazing flux is coated on one side of the cutter head facing the teeth, and then one side of the cutter head facing the teeth is tightly attached to the teeth, so that the brazing flux is clamped between the cutter head and the teeth where the cutter head is located.
Preferably, in the step (1), firstly, a brazing flux is coated on one side of the tooth facing the cutter head, and then one side of the cutter head facing the tooth is tightly attached to the tooth, so that the brazing flux is clamped between the cutter head and the tooth where the cutter head is located.
Compared with the prior art, the saw blade bit laser brazing method has the advantages that the brazing flux is firstly arranged between the bit and the teeth where the bit is located, and then the laser irradiates the bit, so that the bit is heated in a radiation heating mode by the laser, and the bit is heated and simultaneously conducts heat to the brazing flux, so that the brazing flux is heated and melted, and the bit and the teeth where the bit are located are fixed together by the melted brazing flux, and therefore the defect that deformation and even cracking occur at the joint of the bit and the teeth due to the fact that the bit and the teeth are heated at the same time and expansion coefficients of the bit and the teeth are different is effectively overcome.
Drawings
FIG. 1 is a flow chart of a laser brazing method of a saw blade bit of the present invention.
FIG. 2 is a plan view of a laser brazing mechanism for carrying out the laser brazing method of the saw blade head of the present invention.
Fig. 3 is a perspective view of a saw blade with one bit brazed to each tooth.
Fig. 4 is a plan view of the saw blade shown in fig. 3, as viewed from left to right.
Detailed Description
In order to describe the technical content and constructional features of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 2, a laser soldering mechanism for implementing the saw blade head laser soldering method of the present invention includes a semiconductor laser generator 10a and a reflector 10b disposed above or below the semiconductor laser generator 10 a. The semiconductor laser generator 10a is preferably arranged vertically, however, according to practical needs, the semiconductor laser generator 10a may also be arranged obliquely relative to the vertical direction, so that the laser light 10 produced by the semiconductor laser generator 10a irradiates upward on the reflector 10b located above the semiconductor laser generator 10a, or irradiates downward on the reflector 10b located below the semiconductor laser generator 10a, and the reflector 10b reflects the laser light 10, so that the reflected laser light 10 irradiates the tool bit 30 horizontally, so as to heat the tool bit 30 by radiation. Wherein, by means of the vertical arrangement or the inclined arrangement relative to the vertical direction of the semiconductor laser generator 10a, the space occupied by the semiconductor laser generator 10a in the horizontal direction is effectively reduced, so that the structure of the laser brazing mechanism is more compact; by the arrangement of the reflecting mirror 10b and by the reciprocal oscillation of the reflecting mirror 10b, the reciprocal movement of the laser light 10 on the cutter head 30 is very easily controlled, so that the structure for controlling the reciprocal movement of the laser light on the cutter head 30 is simplified. Specifically, in fig. 2, the semiconductor laser generator 10a and the reflecting mirror 10b are symmetrically arranged on the same vertical plane, so that the tool bit 30 is irradiated from two sides (for example, the left and right sides as shown in fig. 2), thereby improving the laser brazing efficiency and quality, and of course, the semiconductor laser generator 10a and the reflecting mirror 10b may be arranged on one side according to actual needs, and it is understood that only the semiconductor laser generator 10a and the reflecting mirror 10b on the left or right side in fig. 2 are reserved, so the method is not limited to the illustration in fig. 2.
And with reference to fig. 1, 3 and 4, the laser brazing method of the saw blade bit of the present invention comprises the steps of:
s001, providing a saw blade 20 and a tool bit 30, placing the tool bit 30 on the teeth 21 of the saw blade 20, and arranging a brazing flux 40 between the tool bit 30 and the teeth 21 where the tool bit 30 is positioned; specifically, in step S001, firstly, a flux 40 is coated on a side 31 of the cutter head 30 facing the teeth 21, and then the side 31 of the cutter head 30 facing the teeth 21 is tightly attached to the teeth 21, such that the flux 40 is sandwiched between the cutter head 30 and the teeth 21 where the cutter head 30 is located; of course, according to actual needs, the brazing flux 40 may be coated on the side of the tooth 21 facing the cutter bit 30, and then the side 31 of the cutter bit 30 facing the tooth 21 is tightly adhered to the tooth 21, so that the brazing flux 40 is clamped between the cutter bit 30 and the tooth 21 where the cutter bit 30 is located; this design achieves the same purpose of providing flux 40 between the cutter head 30 and the tooth 21 where the cutter head 30 is located. And
S002, the laser 10 irradiates the cutter head 30, and the cutter head 30 is heated by the laser 10 in a radiation heating mode, so that the cutter head 30 heats up and simultaneously transmits heat to the brazing flux 40, and the brazing flux 40 is melted to fix the cutter head 30 and the teeth 21 where the cutter head 30 is positioned; specifically, in step S002, the laser 10 is reciprocally moved over the bit 30, and preferably, the laser 10 is reciprocally moved over the bit 30 at a constant speed to effectively ensure uniform heating of the bit 30 throughout, thereby ensuring uniform melting of the flux 40, and thus improving the bonding firmness of both the bit 30 and the teeth 21. Note that, the laser beam 10 may be controlled to reciprocate on the tool bit 30 by swinging the mirror 10b, and of course, the laser beam 10 may also be controlled to reciprocate on the tool bit 30 by controlling the movement of the semiconductor laser generator 10a, which is not limited thereto.
Wherein, in order to braze the cutter head 30 to all teeth 21 of the saw blade 20, the laser braze welding method of the saw blade cutter head of the present invention further comprises the steps of (3): the saw blade 20 performs stepping movement of one tooth 21 to enable the tooth 21 of the next tool bit 30 to be soldered to move to a position opposite to the laser 10; steps S002 and (3) are repeated until all teeth 21 on the saw blade 20 are each brazed with the cutter head 30. When the tooth 21 of the next bit 30 to be soldered moves to a position opposite to the laser beam 10, the bit 30 is brought into close contact with the tooth 21, and the flux 40 is sandwiched between the bit 30 and the tooth 21. In order to make the tool bit 30 closely contact with the teeth 21 for improving the brazing effect, the laser brazing method of the saw blade tool bit of the present invention further includes a pressing step of pressing the side 33 of the tool bit 30 facing away from the teeth 21, the pressing step being located between the step S001 and the step S002 to apply force to the tool bit 30 during the brazing of the tool bit 30 to the teeth 21, so that the melted brazing flux 40 more tightly fixes the tool bit 30 and the teeth 21 together. Specifically, in fig. 2, the side 33 of the cutter head 30 facing away from the teeth 21 is pressed against the side 33 by means of the pressing block 10c, so that the laser light 10 irradiates the cutter head 30 from other positions of the cutter head 30. When the saw blade 20 is a circular saw blade, the saw blade 20 performs a step motion in a rotating manner, and when the saw blade 20 is a bar-shaped saw blade, the saw blade 20 performs a step motion in a moving manner. In addition, when the tooth 21 of the next bit 30 to be soldered moves to the position facing the laser beam 10, before, after or after, it is necessary to bring the bit 30 into close contact with the tooth 21 by the pressing block 10c and to sandwich the flux 40 between the bit 30 and the tooth 21. More specifically, the following is:
as shown in fig. 2, the left laser 10 irradiates the left end face 32 of the cutter head 30 from the forward direction (i.e., the direction indicated by the arrow a) of the thickness direction of the saw blade 20, and the right laser 10 irradiates the right opposite end face 32 of the cutter head 30 from the reverse direction (i.e., the direction indicated by the arrow a) of the thickness direction of the saw blade 20, so that the stroke of the cutter head 30 for conducting heat to the brazing flux 40 is effectively shortened, the uniformity of heating of the brazing flux 40 is effectively improved, and sufficient space is provided for the stepping motion of the saw blade 20, the pressing motion of the pressing block 10b, and the combination of the cutter head 30 and the teeth 21 before brazing, so that interference is avoided. In addition, only the left laser beam 10 or the right laser beam 10 may be provided according to actual needs, so that the laser beam 10 is irradiated onto the end face 32 of the tool bit 30 from the thickness direction of the saw blade 20.
Compared with the prior art, the saw blade bit laser brazing method has the advantages that the brazing flux 40 is firstly arranged between the bit 30 and the teeth 21 where the bit 30 is located, and then the laser 10 irradiates the bit 30, so that the laser 10 heats the bit 30 in a radiation heating mode, and the bit 30 heats the brazing flux 40 while heating, so that the brazing flux 40 is heated and melted, and the bit 30 and the teeth 21 where the bit 30 are located are fixed together by the melted brazing flux 40, and therefore the defect that deformation and even cracking exist at the joint of the bit 30 and the teeth 21 due to the fact that the bit 30 and the teeth 21 are heated at the same time and expansion coefficients of the bit 30 and the teeth 21 are different is effectively overcome.
It should be noted that when the saw blade 20 is a circular saw blade, the thickness direction of the saw blade 20 is the axial direction thereof, and when the saw blade 20 is a strip saw blade, the thickness direction of the saw blade 20 is perpendicular to the length direction thereof.
The foregoing disclosure is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (7)
1. The laser brazing method for the saw blade bit is characterized by comprising the following steps of:
(1) Providing a saw blade and a cutter head, placing the cutter head on teeth of the saw blade, and arranging brazing flux between the cutter head and the teeth where the cutter head is positioned; and
(2) The laser is used for irradiating the cutter head, the cutter head is heated in a radiation heating mode by the laser, and heat is conducted to brazing flux when the cutter head is heated, so that the brazing flux is melted to fix the cutter head and teeth where the cutter head is positioned, and the defect that deformation or even cracking exists at the joint of the cutter head and the teeth due to the fact that the cutter head and the teeth are heated at the same time and expansion coefficients of the cutter head and the teeth are different is overcome;
the method further comprises a jacking step of jacking one side of the cutter head, which is opposite to the tooth, wherein the jacking step is positioned between the step (1) and the step (2); laser irradiates the end face of the cutter head from the thickness direction of the saw blade; in step (2), the laser is reciprocally moved over the tool bit.
2. The method of laser brazing a saw blade bit according to claim 1, wherein the laser is reciprocated on the bit at a constant speed.
3. The laser brazing method of the blade head according to claim 1, wherein one laser beam is irradiated from a forward direction in a thickness direction of the blade to one end face of the blade head, and the other laser beam is irradiated from a reverse direction in the thickness direction of the blade to the other opposite end face of the blade head.
4. The method of laser brazing a saw blade bit of claim 1, further comprising the step (3): the saw blade performs stepping movement of one tooth, so that the tooth of the next tool bit to be soldered moves to a position opposite to the laser; and (3) continuously repeating the steps (2) and (3) until all teeth on the saw blade are brazed with the tool bit.
5. The method of laser brazing a blade bit according to claim 4, wherein the blade is moved in steps in a rotational or moving manner.
6. The laser brazing method of saw blade bit according to claim 1, wherein in the step (1), the brazing flux is coated on the side of the bit facing the teeth, and then the side of the bit facing the teeth is closely attached to the teeth, so that the brazing flux is clamped between the bit and the teeth where the bit is located.
7. The laser brazing method of saw blade bit according to claim 1, wherein in the step (1), the brazing flux is coated on the side of the tooth facing the bit, and then the side of the bit facing the tooth is closely attached to the tooth, so that the brazing flux is clamped between the bit and the tooth where the bit is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210173945.8A CN114367714B (en) | 2022-02-23 | 2022-02-23 | Laser brazing method for saw bit tool bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210173945.8A CN114367714B (en) | 2022-02-23 | 2022-02-23 | Laser brazing method for saw bit tool bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114367714A CN114367714A (en) | 2022-04-19 |
| CN114367714B true CN114367714B (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210173945.8A Active CN114367714B (en) | 2022-02-23 | 2022-02-23 | Laser brazing method for saw bit tool bit |
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| Country | Link |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986233A (en) * | 1998-12-30 | 1999-11-16 | The United States Of America As Represented By The United States Department Of Energy | Susceptor heating device for electron beam brazing |
| JP2008000814A (en) * | 2006-06-26 | 2008-01-10 | Hirotec Corp | Laser beam brazing method and device therefor |
| CN101733496A (en) * | 2010-02-09 | 2010-06-16 | 中国科学院力学研究所 | Laser lap brazing process for titanium alloy and alloy steel |
| CN104588806A (en) * | 2014-11-28 | 2015-05-06 | 江苏中科四象激光科技有限公司 | Carbide blade laser brazing method |
| CN205520985U (en) * | 2016-04-26 | 2016-08-31 | 郑州华邦工具股份有限公司 | Diamond grinding wheel |
| CN106425095A (en) * | 2016-10-31 | 2017-02-22 | 郑州金海威科技实业有限公司 | Laser automatic welding machine for diamond saw blades |
| CN107096972A (en) * | 2017-05-31 | 2017-08-29 | 长沙理工大学 | A kind of method of laser soldering mono-layer diamond tool |
| CN107253290A (en) * | 2017-07-17 | 2017-10-17 | 江苏锋泰工具有限公司 | Side set arrangement diamond saw blade and preparation method thereof |
| CN108838540A (en) * | 2018-09-14 | 2018-11-20 | 项大清 | Saw blade laser soldering device |
| CN109530838A (en) * | 2018-12-13 | 2019-03-29 | 武汉凌云光电科技有限责任公司 | A kind of method of laser welding power semiconductor chip |
| CN111014867A (en) * | 2019-12-24 | 2020-04-17 | 新疆大学 | Laser brazing method for titanium alloy and ceramic dissimilar materials |
| CN112872524A (en) * | 2021-02-01 | 2021-06-01 | 百富新(北京)钻切材料有限公司 | Diamond saw blade welding method |
-
2022
- 2022-02-23 CN CN202210173945.8A patent/CN114367714B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986233A (en) * | 1998-12-30 | 1999-11-16 | The United States Of America As Represented By The United States Department Of Energy | Susceptor heating device for electron beam brazing |
| JP2008000814A (en) * | 2006-06-26 | 2008-01-10 | Hirotec Corp | Laser beam brazing method and device therefor |
| CN101733496A (en) * | 2010-02-09 | 2010-06-16 | 中国科学院力学研究所 | Laser lap brazing process for titanium alloy and alloy steel |
| CN104588806A (en) * | 2014-11-28 | 2015-05-06 | 江苏中科四象激光科技有限公司 | Carbide blade laser brazing method |
| CN205520985U (en) * | 2016-04-26 | 2016-08-31 | 郑州华邦工具股份有限公司 | Diamond grinding wheel |
| CN106425095A (en) * | 2016-10-31 | 2017-02-22 | 郑州金海威科技实业有限公司 | Laser automatic welding machine for diamond saw blades |
| CN107096972A (en) * | 2017-05-31 | 2017-08-29 | 长沙理工大学 | A kind of method of laser soldering mono-layer diamond tool |
| CN107253290A (en) * | 2017-07-17 | 2017-10-17 | 江苏锋泰工具有限公司 | Side set arrangement diamond saw blade and preparation method thereof |
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| CN112872524A (en) * | 2021-02-01 | 2021-06-01 | 百富新(北京)钻切材料有限公司 | Diamond saw blade welding method |
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| CN114367714A (en) | 2022-04-19 |
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