CN107214380A - The saw blade of area is sticked together with increase - Google Patents
The saw blade of area is sticked together with increase Download PDFInfo
- Publication number
- CN107214380A CN107214380A CN201610164385.4A CN201610164385A CN107214380A CN 107214380 A CN107214380 A CN 107214380A CN 201610164385 A CN201610164385 A CN 201610164385A CN 107214380 A CN107214380 A CN 107214380A
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- Prior art keywords
- land
- chase
- face
- land block
- increase
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- 239000011230 binding agent Substances 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 201000011180 Dental Pulp Calcification Diseases 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- B23D61/04—Circular saw blades with inserted saw teeth, i.e. the teeth being individually inserted
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of saw blade that there is increase to stick together area, with an annular saw body, and the outer peripheral edge of the annular saw body forms multiple land seats；The saw blade that there is increase to stick together area is included：Multiple land blocks, there is a blade respectively, respectively the blade of the land block is located at the front end of the respectively land block, respectively the blade is formed at the one side of the respectively land block, respectively the back side of the land block and bottom surface wherein at least one side are formed with an at least chase, respectively the back side and bottom surface of the land block are arranged at respectively land seat, it is arranged at binder between the respectively back side of the land block, bottom surface and an at least chase and respectively land seat, the area of an at least chase for the land block can increase the area of binder bonding, and binder binds the respectively land block and respectively land seat.
Description
Technical field
The present invention is relevant with saw blade, particularly relates to a kind of saw blade that there is increase to stick together area.
Background technology
No. 200529958 Patent Case of TaiWan, China is referred to, one kind weldering rack saw piece includes：One pedestal,
Multiple weldering crowns.The periphery of the pedestal forms multiple denticles, and respectively the denticle is recessed forms a weldering toothholder.Respectively should
Weldering crown is corresponding to be arranged at the respectively weldering toothholder, and engages both by welding is implemented.Respectively the weldering crown has
Have a bearing and a weldering crown shred, respectively this weldering crown shred is corresponding is arranged at the respectively bearing, and by reality
Welding, which connects, engages both.Respectively the weldering crown be by superhard alloy be base material, its land be formed in part with compared with
Above-mentioned superhard alloy is the weldering crown shred of hard hard layer.
The back side and bottom surface of the respectively weldering crown of the foregoing weldering rack saw piece are all plane, and respectively the weldering toothholder has two
Composition surface is also all plane, the respectively weldering crown is bonding on into the respectively weldering toothholder by adhesive agent, due to adhesive agent
The area that can be sticked together all is plane, makes the area that adhesive agent sticks together not enough, therefore, respectively the weldering crown can not
Firm is attached to the respectively weldering toothholder, therefore the weldering rack saw piece there are above mentioned problem.
The content of the invention
The main object of the present invention is in that to provide a kind of saw blade that there is increase to stick together area, to reach tooth
The firm purpose for being attached to annular saw body of sword block.
Edge is, according to a kind of saw blade that there is increase to stick together area provided by the present invention, with an annular saw
Body, the outer peripheral edge of the annular saw body forms multiple land seats；This, which has, increases the saw blade bag for sticking together area
Contain：Multiple land blocks, respectively with a blade, respectively the blade of the land block is located at the front end of the respectively land block,
Respectively the blade is formed at the one side of the respectively land block, respectively the back side of the land block and bottom surface wherein at least one side shape
Into there is an at least chase, respectively the back side and bottom surface of the land block are arranged at respectively land seat, are set with binder
Between the respectively back side of the land block, bottom surface and an at least chase and respectively land seat, the land block is at least
The area of one chase can increase the area of binder bonding, and binder binds the respectively land block and the respectively land
Seat.
Thereby, the present invention sets binder between the respectively land block and respectively land seat, by the respectively land
The area that the back side of block and at least chase increase binder of bottom surface stick together, makes the respectively land block and the respectively tooth
The adhesion enhancing of sword seat, so make each land block it is more firm be attached to respectively land seat.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as to the present invention's
Limit.
Brief description of the drawings
Fig. 1 is the side view of the first preferred embodiment of the invention.
Fig. 2 is the partial enlarged drawing of the first preferred embodiment of the invention, and display land agllutination is together in land seat.
Fig. 3 is the stereogram of the land block of the first preferred embodiment of the invention.
Fig. 4 is the stereogram at another visual angle of the land block of the first preferred embodiment of the invention.
Fig. 5 is the stereogram of the land block of the second preferred embodiment of the invention, display the back side and bottom surface it is recessed
Ditch.
Fig. 6 is the partial enlarged drawing of the land seat of the 3rd preferred embodiment of the invention, the first of display land seat
Face and the chase in the second face.
Fig. 7 is the partial enlarged drawing of the 3rd preferred embodiment of the invention, and display land agllutination is together in land seat.
Fig. 8 is the local big figure of the land block of the 4th preferred embodiment of the invention, the first face of display land seat
And second face chase.
Wherein, reference
100th, 200,300,400 there is increase to stick together the saw blade of area
The side of 10 annular saw body 11
12 lands, 13 angular breach of seat
The groove of 14 first face 141
The groove of 16 second face 161
The blade of 20 land block 21
The chase of 22 back side 221
The chase of 24 bottom surface 241
Before 26 top surfaces 28
29 side A binders
Embodiment
Technical solution of the present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings, more to enter one
Step understands the purpose of the present invention, scheme and effect, but is not intended as scope of the appended claims of the present invention
Limitation.
Fig. 1 to Fig. 4 is referred to, there is one kind that the first preferred embodiment of the invention is provided increase to stick together face
Long-pending saw blade 100, with an annular saw body 10 and multiple land blocks 20, the periphery of the annular saw body 10
Edge forms multiple land seats 12, as shown in Figure 1.
Referring to Fig. 2, those land blocks 20 have a blade 21, the respectively blade of the land block 20 respectively
21 are located at the front end of the respectively land block 20, respectively the back side 22 of the land block 20 and the wherein at least of bottom surface 24
Simultaneously 22,24 back side 22 and bottom surface 24 for being formed with least a chase 221,241, respectively the land block 20
Respectively land seat 12 is arranged at, the back side 22, the bottom surface 24 of the respectively land block 20 are arranged at binder A
And an at least chase 221,241 and respectively the land seat 12 between, an at least chase 221 for the land block 20,
241 area can increase the area of binder A bondings, and binder A binds the respectively land block 20 and respectively should
Land seat 12.In this first preferred embodiment, Fig. 2 to Fig. 4 is referred to, respectively the back side of the land block 20
22 and bottom surface 24 be all formed with an at least chase 221,241.Respectively the back side 22 of the land block 20 is formed
There is an at least chase 221, respectively an at least chase 221 at the back side 22 is by taking three chases 221 as an example.Respectively
The bottom surface 24 of the land block 20 is formed with an at least chase 241, respectively an at least chase 241 for the bottom surface 24
By taking a chase 241 as an example.
Referring to Fig. 2, in this first preferred embodiment, each land block 20 and respectively between land seat 12
Binder A is set, by three chases 221 and the chase of bottom surface 24 at the back side 22 of the respectively land block 20
241, to increase the area that binder A sticks together, make the adhesion of respectively the land block 20 and respectively land seat 12
Enhancing, so make each land block 20 it is more firm be attached to respectively land seat 12.
In this first preferred embodiment, Fig. 2 to Fig. 4 is referred to, respectively the back side 22 of the land block 20 is extremely
The arrangement of a few chase 221 is horizontally arranged relative to the respectively top, bottom surface 26,24.The each land block 20
The back side 22 an at least chase 221 by taking three chases 221 as an example.
In this first preferred embodiment, Fig. 2 to Fig. 4 is referred to, respectively the bottom surface 24 of the land block 20 is extremely
The arrangement of a few chase 241 relative to respectively before this, the back side 28,22 is exemplified by arranged in parallel.The each land
An at least chase 241 for the bottom surface 24 of block 20 is by taking a chase 241 as an example.
In this first embodiment, Fig. 2 to Fig. 4 is referred to, respectively an at least chase 221 for the land block 20
Quantity to be multiple, being arranged as those chases 221 is arranged in parallel.The each back side 22 of the land block 20
An at least chase 221 by taking three chases 221 as an example.
From the foregoing, it will be observed that the attainable effect of present invention institute is：Solving should on what is commonly used in prior art
The back side and bottom surface of the respectively weldering crown for welding rack saw piece is all plane, and respectively the weldering toothholder has two composition surfaces also all
For plane, when corresponding respectively two composition surface of the weldering toothholder in the back side and bottom surface of each weldering crown, by glutinous
Agent and the respectively weldering crown is bonding on the respectively weldering toothholder, by the area that adhesive agent can stick together all is plane,
Make the area that adhesive agent sticks together not enough, therefore, produce that the respectively weldering crown can not consolidate is attached to the respectively weldering tooth
The problem of seat.The present invention sets binder A between the respectively land block 20 and respectively land seat 12, by
Respectively an at least chase 221, the 241 increase binder A of the back side 22 of the land block 20 and bottom surface 24 is sticked
The area, making the adhesion of respectively the land block 20 and respectively land seat 12 strengthens, and then makes the respectively land
Block 20 it is more firm be attached to respectively the land seat 12.
In the above description, in this first preferred embodiment, each back side 22 and bottom surface of the land block 20
24 are all formed with an at least chase 221,241, are not limited thereto on the implementation, also can only respectively should
The back side 22 of land block 20 is formed with an at least chase 221, or is only in the respectively land block 20
Bottom surface 24 be formed with an at least chase 241, by aforementioned manner can be by this first preferred embodiment institute
Understand, therefore, no longer with graphic representation it.
In the above description, in this first preferred embodiment, the back side 22 of each land block 20 is formed with
An at least chase 221, respectively the back side 22 at least a chase 221 is by taking three chases 221 as an example, respectively
The bottom surface 24 of the land block 20 is formed with an at least chase 241, respectively an at least chase for the bottom surface 24
241 by taking a chase 241 as an example, are not limited thereto on the implementation, and respectively at least the one of the back side 22 is recessed
The quantity of ditch 221 also can be single, and respectively the quantity of an at least chase 241 for the bottom surface 24 also can be many
It is individual, by aforementioned manner can be understood by this first preferred embodiment, therefore, no longer with graphic representation it.
Specifically, even if being only formed with an at least chase at the back side 22 of the respectively land block 20
221, or be that an at least chase 241 is only formed with the bottom surface 24 of the respectively land block 20, also may be used
The area that increase binder A sticks together is reached, makes the adhesion of respectively the land block 20 and respectively land seat 12
Enhancing, and then make respectively more firm effect for being attached to respectively land seat 12 of the land block 20.
Referring to Fig. 5, the second preferred embodiment of the invention provides a kind of annular saw that there is increase to stick together area
Piece 200, takes off first embodiment before being mainly generally same as, difference is：
Respectively the arrangement of an at least chase 221 at the back side 22 of the land block 20 is relative to the respectively top, bottom surface
26th, 24 be vertical arrangement.In this second embodiment, respectively at least the one of the back side 22 of the land block 20 is recessed
Ditch 221 is by taking two chases 221 as an example.
Respectively the arrangement of an at least chase 241 for the bottom surface 24 of the land block 20 is relative to the respectively land block 20
Two side faces 29 to be arranged in parallel.In this second embodiment, respectively the bottom surface 24 of the land block 20 is at least
One chase 241 is by taking two chases 241 as an example.
Remaining structure of second preferred embodiment of the invention takes off the first preferred embodiment before being generally same as, and holds no longer
Give and repeating.
Fig. 6 and Fig. 7 is referred to, the 3rd preferred embodiment of the invention provides one kind, and there is increase to stick together area
Saw blade 300, first embodiment is taken off before being mainly generally same as, difference is：
Respectively land seat 12 is towards a cutting direction one angular breach 13 of formation, as shown in fig. 6, the respectively tooth
Sword seat 12 forms one first face 14 and one second face 16 at the angular breach 13, respectively first face 14
Towards the cutting direction, respectively second face 16 towards one radially.Respectively the land seat 12 the first face 14 and
Second face 16 corresponds to the back side 22 and bottom surface 24 of the respectively land block 20 respectively.Each the of land seat 12
When 14 and one second 16 wherein at least of face, 14,16 are formed with an at least chase 141,161.This
In 3rd preferred embodiment, respectively the first face 14 of land seat 12 is exemplified by forming three chases 141.Respectively
Second face 16 of land seat 12 is exemplified by forming a chase 161.
In this third embodiment, respectively the land seat 12 the first face 14 and an at least chase in the second face 16
141st, 161 can increase the area that binder A sticks together, and make the respectively land block 20 and respectively land seat 12
Adhesion strengthens, so make each land block 20 it is more firm be attached to respectively land seat 12.
Respectively the arrangement of an at least chase 141 in the first face 14 of land seat 12 is relative to respectively second face
16 is horizontally arranged, respectively the arrangement of an at least chase 161 in the second face 16 of land seat 12 relative to
Each first face 14 is arranged in parallel.In this third embodiment, respectively the land seat 12 the first face 14 extremely
Lack a chase 141 by taking three chases 141 as an example, respectively an at least chase in the second face 16 of land seat 12
161 by taking a chase 161 as an example.
In the above description, in this 3rd preferred embodiment, each the first face 14 and second of land seat 12
Face 16 is all formed with an at least chase 141,161, is not limited thereto on the implementation, also can be only each
First face 14 of land seat 12 is formed with an at least chase 141, or is only in respectively land seat
12 the second face 16 is formed with an at least chase 161, because aforementioned manner can be by this 3rd preferably implementation
Example understood, therefore, no longer with graphic representation it.
In the above description, in this 3rd preferred embodiment, the first face 14 of each land seat 12 is formed
Have an at least chase 141, an at least chase 141 by taking three chases 141 as an example, respectively the land seat 12
The second face 16 be formed with an at least chase 161, an at least chase 161 is with a chase 161
Example, is not limited thereto on the implementation, and respectively an at least chase 141 in first face 14 also can be single
Chase 141, respectively an at least chase 161 in second face 16 also can be multiple chases 161, due to foregoing side
Formula can be understood by this 3rd preferred embodiment, therefore, no longer with graphic representation it.
Remaining structure of 3rd preferred embodiment of the invention takes off the first preferred embodiment before being generally same as, and holds no longer
Give and repeating.
Referring to Fig. 8, the 4th preferred embodiment of the invention provides a kind of annular saw that there is increase to stick together area
Piece 400, takes off first embodiment before being mainly generally same as, difference is：
Respectively the arrangement of an at least chase 141 in the first face 14 of land seat 12 is relative to the annular saw body
10 two side faces 11 is arranged in parallel, each at least chase 161 in the second face 16 of land seat 12
Two side faces 11 of the arrangement relative to the respectively annular saw body 10 to be arranged in parallel.In this 4th preferred embodiment,
Respectively the quantity of an at least chase 141,161 in the first face 14 of land seat 12 and the second face 16 is distinguished
Exemplified by two, but respectively the land seat 12 the first face 14 and the second face 16 an at least chase 141,
161 quantity is not limited thereto.
Remaining structure of 4th preferred embodiment of the invention takes off the first preferred embodiment before being generally same as, and holds no longer
Give and repeating.
Certainly, the present invention can also have other various embodiments, in the feelings without departing substantially from spirit of the invention and its essence
Under condition, those skilled in the art work as can make various corresponding changes and deformation according to the present invention, but
These corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
Claims (11)
1. a kind of saw blade that there is increase to stick together area, it is characterised in that with an annular saw body, should
The outer peripheral edge of annular saw body forms multiple land seats；The saw blade is included：
Multiple land blocks, respectively with a blade, respectively the blade of the land block is located at the front end of the respectively land block,
Respectively the back side of the land block and bottom surface wherein at least one side are formed with the back side of at least a chase, respectively the land block
And bottom surface is arranged at respectively land seat, and the respectively back side of the land block, bottom surface and at least one are arranged at binder
Between chase and respectively land seat, the area of an at least chase for the land block can increase the face of binder bonding
Product, binder binds the respectively land block and respectively land seat.
2. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
The back side of the land block is formed with an at least chase.
3. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
The bottom surface of the land block is formed with an at least chase.
4. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
The back side and bottom surface of the land block are all formed with an at least chase.
5. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
The arrangement of an at least chase at the back side of the land block is horizontally arranged relative to the respectively top, bottom surface, respectively should
The arrangement of an at least chase for the bottom surface of land block relative to respectively before this, the back side be arranged in parallel.
6. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
The arrangement of an at least chase at the back side of the land block is vertical arrangement relative to the respectively top, bottom surface, respectively should
The arrangement of an at least chase of the bottom surface of land block is arranged in parallel relative to the two side faces of the respectively land block.
7. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
The quantity of an at least chase of the land block is multiple, and being arranged as those chases is arranged in parallel.
8. increase the saw blade for sticking together area according to having described in claim 1, it is characterised in that each
Land seat is towards a cutting direction one angular breach of formation, and respectively land seat is in the angular indentation, there formation one
First face and one second face, respectively this is first facing to the cutting direction, respectively this second facing to one radially；Respectively
The first face and the second face of land seat correspond to the back side and bottom surface of the respectively land block respectively.
9. increase the saw blade for sticking together area according to having described in claim 8, it is characterised in that each
First face of land seat and one second face wherein at least one side are formed with an at least chase.
10. increase the saw blade for sticking together area according to having described in claim 9, it is characterised in that each
The arrangement of an at least chase in the first face of land seat is horizontally arranged relative to respectively second face, respectively should
The arrangement of an at least chase in the second face of land seat is arranged in parallel relative to each first face.
11. increase the saw blade for sticking together area according to having described in claim 9, it is characterised in that each
The arrangement of an at least chase in the first face of land seat is parallel relative to the two side faces of the annular saw body
Two sides of the arrangement relative to the respectively annular saw body of arrangement, respectively an at least chase in the second face of land seat
Face is arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164385.4A CN107214380A (en) | 2016-03-22 | 2016-03-22 | The saw blade of area is sticked together with increase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164385.4A CN107214380A (en) | 2016-03-22 | 2016-03-22 | The saw blade of area is sticked together with increase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107214380A true CN107214380A (en) | 2017-09-29 |
Family
ID=59927716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610164385.4A Pending CN107214380A (en) | 2016-03-22 | 2016-03-22 | The saw blade of area is sticked together with increase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107214380A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8901651U1 (en) * | 1989-02-14 | 1989-03-23 | Prekwinkel, Frank, Dipl.-Ing., 4900 Herford | Rotary tool |
| DE4200420A1 (en) * | 1992-01-10 | 1993-07-15 | Felde Richard Fa | Circular-saw-blade for wood- and metal-cutting - has cutting plates made of hard cutting material soldered on saw-teeth using hard solder layer. |
| CN2155296Y (en) * | 1993-03-09 | 1994-02-09 | 房边疆 | Carbide saw |
| CN1178732A (en) * | 1996-09-25 | 1998-04-15 | 松下电工株式会社 | Cutting tools and its producing method |
| CN1741878A (en) * | 2003-03-06 | 2006-03-01 | 二和金刚石工业株式会社 | Gear type machining tip and tool attaching the same thereon |
| CN1747806A (en) * | 2003-02-14 | 2006-03-15 | 住友电气工业株式会社 | Edge replacement tip and cutting tool using the same |
| US7353819B2 (en) * | 2005-12-23 | 2008-04-08 | Dong Young Diamond Industrial Co., Ltd. | Processing tips and tools using the same |
| CN201572969U (en) * | 2010-01-08 | 2010-09-08 | 张大晟 | Composite saw |
| CN102161118A (en) * | 2010-02-16 | 2011-08-24 | 弗洛伊德美国公司 | Circular saw blade with cutting tips mechanically lockes against multiple force vectors |
| CN202438742U (en) * | 2012-03-09 | 2012-09-19 | 福建万龙金刚石工具有限公司 | Diamond saw blade capable of preventing tool bit from dropping |
| CN202655730U (en) * | 2012-07-31 | 2013-01-09 | 乐清市南方硬质合金有限公司 | Circular saw web |
-
2016
- 2016-03-22 CN CN201610164385.4A patent/CN107214380A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8901651U1 (en) * | 1989-02-14 | 1989-03-23 | Prekwinkel, Frank, Dipl.-Ing., 4900 Herford | Rotary tool |
| DE4200420A1 (en) * | 1992-01-10 | 1993-07-15 | Felde Richard Fa | Circular-saw-blade for wood- and metal-cutting - has cutting plates made of hard cutting material soldered on saw-teeth using hard solder layer. |
| CN2155296Y (en) * | 1993-03-09 | 1994-02-09 | 房边疆 | Carbide saw |
| CN1178732A (en) * | 1996-09-25 | 1998-04-15 | 松下电工株式会社 | Cutting tools and its producing method |
| CN1747806A (en) * | 2003-02-14 | 2006-03-15 | 住友电气工业株式会社 | Edge replacement tip and cutting tool using the same |
| CN1741878A (en) * | 2003-03-06 | 2006-03-01 | 二和金刚石工业株式会社 | Gear type machining tip and tool attaching the same thereon |
| US7353819B2 (en) * | 2005-12-23 | 2008-04-08 | Dong Young Diamond Industrial Co., Ltd. | Processing tips and tools using the same |
| CN201572969U (en) * | 2010-01-08 | 2010-09-08 | 张大晟 | Composite saw |
| CN102161118A (en) * | 2010-02-16 | 2011-08-24 | 弗洛伊德美国公司 | Circular saw blade with cutting tips mechanically lockes against multiple force vectors |
| CN202438742U (en) * | 2012-03-09 | 2012-09-19 | 福建万龙金刚石工具有限公司 | Diamond saw blade capable of preventing tool bit from dropping |
| CN202655730U (en) * | 2012-07-31 | 2013-01-09 | 乐清市南方硬质合金有限公司 | Circular saw web |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170929 |
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