CN112170959A - Repairing method of mechanical clamping type hard alloy circular saw blade - Google Patents
Repairing method of mechanical clamping type hard alloy circular saw blade Download PDFInfo
- Publication number
- CN112170959A CN112170959A CN202011066598.6A CN202011066598A CN112170959A CN 112170959 A CN112170959 A CN 112170959A CN 202011066598 A CN202011066598 A CN 202011066598A CN 112170959 A CN112170959 A CN 112170959A
- Authority
- CN
- China
- Prior art keywords
- saw blade
- groove
- processing
- hard alloy
- saw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 241001646071 Prioneris Species 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000003801 milling Methods 0.000 description 3
- 238000003698 laser cutting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000036339 tooth positioning Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/08—Sharpening the cutting edges of saw teeth
- B23D63/12—Sharpening the cutting edges of saw teeth by grinding
- B23D63/14—Sharpening circular saw blades
Abstract
The invention relates to a hard alloy tooth circular saw blade, in particular to a repairing method of a mechanically clamped hard alloy circular saw blade. The method comprises the following steps of A, inspecting the damage condition of the saw blade; B. primarily processing the saw blade body; C. processing the surfaces of the saw blade bodies on two sides of the groove bottom of the groove structure to form a convex shoulder structure with the same width as the groove bottom; D. processing and assembling the replacement insert E; F. processing a hard alloy cutter block positioning groove; g, overall detection, namely detecting the processed saw blade once comprehensively to ensure that each index of the saw blade meets the technical requirements of conventional products; H. and mounting the hard alloy cutter block on the repaired saw blade. The invention provides proper repair for the saw blade, so that the saw blade can recover the use function, the economic loss is saved, and the production cost is reduced.
Description
Technical Field
The invention relates to a hard alloy tooth circular saw blade, in particular to a repairing method of a mechanically clamped hard alloy circular saw blade.
Background
The hard alloy tooth circular saw blade is an important cutting tool in the metallurgical industry and the mechanical industry, is particularly widely used in online and offline saw cutting of products such as steel pipes, steel billets, steel rails, profile steel and the like, is matched with a special circular saw machine to be used in places such as steel rolling workshops, forging plants, machining plants and the like, and has good cutting quality and fast machining efficiency.
The traditional hard alloy tooth circular saw blade adopts an alloy steel plate to manufacture a base body and a hard alloy cutter block to manufacture sawteeth, the base body and the hard alloy cutter block are firmly connected through a brazing process, and the sawteeth are subjected to precise cutter grinding to obtain different tooth-shaped angles so as to adapt to processing of different workpieces.
Because the repair and the recycling of the welding type alloy saw blade are troublesome, more auxiliary equipment and personnel are needed, the repair period is long, the saw blade replacement and the saw blade performance improvement are convenient to develop on site, in recent years, a hard alloy tooth circular saw blade of a sawtooth machine clamp type is developed, the welding is replaced by a screw mechanical clamping mode, the tooth replacing time can be greatly reduced, the sharpening work is cancelled, special equipment and workers are saved, and the welding type hard alloy tooth circular saw blade is popular to users. In addition, because the carbide sawtooth of preparation in advance adopts high accuracy equipment grinding, size precision level is higher, interchangeability is stronger, the blade improves by a wide margin through coating processing property, can obtain longer saw cutting life-span, is the novel circular saw blade product of key popularization in future. However, since the mechanically clamped hard alloy circular saw blade adopts a mechanical clamping mode to fix the saw teeth, the processing of the saw tooth positioning system is a key process, and the saw blade body has high cost because the machining has enough precision and high-grade numerical control machine tool is used for realizing rapid processing. Because the sawing condition of the circular saw blade is complex, the condition that individual saw teeth are integrally damaged often occurs, screw holes are damaged or even broken, the saw blade body cannot be used and is scrapped, and the loss is large.
Disclosure of Invention
The invention aims to solve the technical problems and provides a method for repairing a mechanically clamped hard alloy circular saw blade, so as to recover the use function of the damaged saw blade.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for repairing a mechanically clamped hard alloy circular saw blade comprises the following steps:
A. checking the damage condition of the saw blade, wherein the damage saw teeth of the whole saw blade are within 5 and are discontinuous;
B. preliminary processing of saw blade body
The groove bottoms of the front tooth groove and the rear tooth groove of the damaged saw tooth extend to the circle center of the saw blade, the root of the damaged saw tooth is cut off, and an inverted trapezoidal groove structure is processed on the saw blade body;
C. processing the surfaces of the saw blade bodies on two sides of the groove bottom of the groove structure, processing a convex shoulder structure with the same width as the groove bottom, processing a first mounting hole by the convex shoulder structure, and processing semicircular first counter bores on the outer sides of two vertical walls of the groove structure respectively;
D. machining replacement insert
Processing a cutting insert matched with the cut-off saw teeth, tooth seats and groove structures, processing a second mounting hole corresponding to the first mounting hole on the insert block, processing second counter bores corresponding to the first counter bores on two end faces of the insert block, wherein the second counter bores are semicircular holes, processing a jaw groove matched with the shoulder structure at the bottom of the insert block, and the thickness of the insert block is smaller than that of the saw blade body;
E. assembly
Grinding inclined planes at two ends of the inserted block to be matched with the groove of the saw blade body, inserting a jaw groove of the inserted block into the convex shoulder structure, pressing the jaw groove into the bottom of the groove, connecting a second mounting hole of the inserted block with a first mounting hole of the convex shoulder structure through a connecting piece, connecting a first counter bore with a second counter bore through the connecting piece, and enabling two end surfaces of the connecting piece to be lower than two surfaces of the saw blade body;
F. processing of hard alloy cutter block positioning groove
Installing a saw blade on a machine tool, and determining a machining coordinate of the machine tool by using front and rear saw teeth of an insert block as a reference; then, calculating an angle of a tooth pitch according to the number of teeth of the saw blade, rotating the saw blade according to the angle to enable the insert block to enter a processing position, and respectively processing a hard alloy cutter block positioning surface, a positioning groove and a threaded hole on the tooth holder to ensure that the precision of the hard alloy cutter block is the same as that of other saw teeth after the hard alloy cutter block is assembled;
G. overall detection
The processed saw blade is comprehensively detected once, and all indexes of the saw blade are ensured to meet the technical requirements of conventional products;
H. and mounting the hard alloy cutter block on the repaired saw blade.
Compared with the prior art, the invention adopting the technical scheme has the beneficial effects that:
the saw blade is repaired properly, so that the using function of the saw blade is recovered, the economic loss is saved, and the production cost is reduced.
Further, the optimization scheme of the invention is as follows:
the first mounting hole and the second mounting hole are rivet holes, the rivet holes are of counter bore structures, and the connecting piece is a rivet.
Drawings
FIG. 1 is a front view of a saw blade of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. A-A;
FIG. 3 is a schematic view of a damaged saw tooth of a saw blade according to an embodiment of the present invention;
FIG. 4 is a schematic view of a damaged saw tooth root cut according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a groove configuration and a shoulder configuration of an embodiment of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
FIG. 7 is a schematic structural diagram of an insert block according to an embodiment of the present invention;
FIG. 8 is a left side view of FIG. 7;
FIG. 9 is a view in the direction C of FIG. 8;
in the figure: a saw blade 1; a saw blade body 1-1; damage to the sawteeth 1-2; 1-3 of the root of the sawtooth is damaged; saw teeth 2; 2-1 of a hard alloy cutter block; a tooth holder 3; 3-1 of a positioning surface; positioning a groove 3-2; 3-3 of a threaded hole; a groove structure 4; a shoulder structure 5; a first mounting hole 5-1; a first counterbore 6; an insert block 7; a second mounting hole 7-1; a jaw groove structure 8; a second counterbore 9; a rivet 10.
Detailed Description
The invention is further described in detail below with reference to the figures and examples.
Referring to fig. 1 and 2, a mechanically clamped hard alloy circular saw blade 1 comprises a saw blade body 1-1, saw teeth 2 and the like, wherein the saw teeth 2 are processed with a tooth holder 3, the tooth holder 3 is processed with a cutter block positioning surface 3-1, a positioning groove 3-2 and a threaded hole 3-3, and the hard alloy cutter block 2-1 is arranged on the tooth holder 3.
A method for repairing a mechanically clamped hard alloy circular saw blade comprises the following steps:
A. checking the damage condition of the saw blade 1, wherein the damage saw teeth of the whole saw blade 11 are within 5 and are discontinuous;
B. preliminary working of saw blade
The groove bottoms of the front tooth groove and the rear tooth groove of the damaged saw tooth 1-2 extend to the circle center of the saw blade, the root part 1-3 of the damaged saw tooth is accurately cut off by using a laser cutting machine, and a rectangular groove structure 4 (shown in figures 3, 4 and 5) is processed on the saw blade body 1-1;
C. finishing the groove structure 4, grinding a hardened layer on a laser cutting surface by using a miniature grinding wheel, and trimming first counter bores 6 on the outer sides of two vertical walls of the groove structure 4, wherein the first counter bores 6 are semicircular holes; then, milling and thinning the surfaces of the saw blade bodies 1-1 on the two sides of the groove bottom of the groove structure 4 on a vertical milling machine to process a convex shoulder structure 5 with the same width as the groove bottom, wherein the convex shoulder structure 5 is processed with two first mounting holes 5-1 (shown in figures 5 and 6);
D. machining replacement insert
The material of the insert 7 is the same as that of the saw blade 1, the saw blade steel plate with the same material and the same hardness is adopted, the required shape including the tooth seat 3 part is cut out by adopting a linear cutting method, and proper machining allowance is reserved on each surface except the tooth seat 3 part and is matched when assembling. The insert block 7 is used for processing a second mounting hole 7-1 corresponding to the first mounting hole 5-1, the first mounting hole 5-1 and the second mounting hole 7-1 are rivet holes, the rivet holes are in counter bore structures, the insert block 7 is used for processing a jaw groove structure 8 matched with the shoulder structure 5, a second counter bore 9 corresponding to the first counter bore 6 is drilled and repaired on the insert block 7, and the second counter bore 9 is a semicircular hole and has the same radius as the first counter bore 6. Then a jaw groove structure 8 for positioning and mounting is processed in the middle of the bottom of the insert block 7, and the depth of the jaw groove structure is greater than the height of the shoulder structure 5; grinding two side surfaces of the insert block 7 by taking the jaw slot structure 8 as a reference, wherein the thickness of the two side surfaces is less than or equal to that of the saw blade body 1-1, and when the thickness of the insert block 7 is less than that of the saw blade body 1-1, each surface is 0.02 mm thinner but is not allowed to be thicker than the saw blade body 1-1;
E. assembly
Grinding inclined planes at two ends of the inserted block 7 to enable the inclined planes to be matched with the groove structure 4, inserting a jaw groove structure 8 of the inserted block 7 into the convex shoulder structure 5, pressing the inserted block 7 into the groove bottom of the groove structure 4, riveting a second mounting hole 7-1 of the inserted block 7 with a first mounting hole 5-1 of the convex shoulder structure 5 through a rivet 10, riveting a first counter bore 6 and a second counter bore 9 through the rivet 10, riveting the rivet 10 tightly, grinding two end faces of the rivet 10, and enabling two end faces of the rivet 10 to be lower than two surfaces of the saw blade body 1-1;
F. processing of cutter block positioning groove
Installing a saw blade 1 on a machine tool, wherein the machine tool adopts a horizontal numerical control milling machine or a horizontal machining center and is matched with a special tray and a special pressure plate, the saw blade 1 is installed on the machine tool, a central hole of the saw blade 1 needs to be aligned and is concentric with a machine tool workbench, and the machining coordinate of the machine tool is determined by using front and rear saw teeth 2 of an insert block 7 as a reference; then, the saw blade is rotated by an angle of a tooth pitch according to the number of teeth of the saw blade, then the saw blade is rotated according to the angle, the insert block 7 enters a processing position, and a hard alloy cutter block positioning surface 3-1, a positioning groove 3-2 and a threaded hole 3-3 are respectively processed on the tooth holder 3, so that the same precision as other saw teeth is ensured after the hard alloy cutter block 2-1 is assembled;
g, overall detection, namely comprehensively detecting the processed saw blade 1 once to ensure that each index of the saw blade 1 meets the technical requirements of conventional products, and if any defect exists, giving treatment;
H. the hard alloy cutter block 2-1 is arranged on the repaired saw blade 1, and the saw blade 1 is arranged on a sawing machine at any time to be put into use.
The process method of the invention provides proper repair for individual sawtooth damage of the sheet body of the mechanically clamped hard alloy tooth circular saw blade, so that the use function of the mechanically clamped hard alloy tooth circular saw blade is recovered, and the economic loss is recovered. According to the saw blade, the damaged part is cut off, a small piece body and saw teeth with the same size are replaced, the connection is firm, the precision machining is realized, and the saw blade can have the saw cutting function again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (2)
1. A method for repairing a mechanically clamped hard alloy circular saw blade comprises the following steps:
A. checking the damage condition of the saw blade, wherein the damage saw teeth of the whole saw blade are within 5 and are discontinuous;
B. preliminary processing of saw blade body
The groove bottoms of the front tooth groove and the rear tooth groove of the damaged saw tooth extend to the circle center of the saw blade, the root of the damaged saw tooth is cut off, and an inverted trapezoidal groove structure is processed on the saw blade body;
C. processing the surfaces of the saw blade bodies on two sides of the groove bottom of the groove structure, processing a convex shoulder structure with the same width as the groove bottom, processing a first mounting hole by the convex shoulder structure, and processing semicircular first counter bores on the outer sides of two vertical walls of the groove structure respectively;
D. machining replacement insert
Processing a cutting insert matched with the cut-off saw teeth, tooth seats and groove structures, processing a second mounting hole corresponding to the first mounting hole on the insert block, processing second counter bores corresponding to the first counter bores on two end faces of the insert block, wherein the second counter bores are semicircular holes, processing a jaw groove matched with the shoulder structure at the bottom of the insert block, and the thickness of the insert block is smaller than that of the saw blade body;
E. assembly
Grinding inclined planes at two ends of the inserted block to be matched with the groove of the saw blade body, inserting a jaw groove of the inserted block into the convex shoulder structure, pressing the jaw groove into the bottom of the groove, connecting a second mounting hole of the inserted block with a first mounting hole of the convex shoulder structure through a connecting piece, connecting a first counter bore with a second counter bore through the connecting piece, and enabling two end surfaces of the connecting piece to be lower than two surfaces of the saw blade body;
F. processing of hard alloy cutter block positioning groove
Installing a saw blade on a machine tool, and determining a machining coordinate of the machine tool by using front and rear saw teeth of an insert block as a reference; then, calculating an angle of a tooth pitch according to the number of teeth of the saw blade, rotating the saw blade according to the angle to enable the insert block to enter a processing position, and respectively processing a hard alloy cutter block positioning surface, a positioning groove and a threaded hole on the tooth holder to ensure that the precision of the hard alloy cutter block is the same as that of other saw teeth after the hard alloy cutter block is assembled;
G. overall detection
The processed saw blade is comprehensively detected once, and all indexes of the saw blade are ensured to meet the technical requirements of conventional products;
H. and mounting the hard alloy cutter block on the repaired saw blade.
2. The method of claim 1, wherein the method comprises the steps of: the first mounting hole and the second mounting hole are rivet holes, the rivet holes are of counter bore structures, and the connecting piece is a rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066598.6A CN112170959A (en) | 2020-10-01 | 2020-10-01 | Repairing method of mechanical clamping type hard alloy circular saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066598.6A CN112170959A (en) | 2020-10-01 | 2020-10-01 | Repairing method of mechanical clamping type hard alloy circular saw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112170959A true CN112170959A (en) | 2021-01-05 |
Family
ID=73947788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011066598.6A Pending CN112170959A (en) | 2020-10-01 | 2020-10-01 | Repairing method of mechanical clamping type hard alloy circular saw blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112170959A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563929A (en) * | 1984-08-30 | 1986-01-14 | Weyerhaeuser Company | Field repairable circular saw |
| CN2207251Y (en) * | 1994-07-13 | 1995-09-13 | 自贡硬质合金厂 | Tipped milling cutter |
| KR20050089569A (en) * | 2004-03-05 | 2005-09-08 | (주)대명기업 | Repair method for circular saw |
| CN101053915A (en) * | 2007-05-22 | 2007-10-17 | 马鞍山市威龙科工贸有限公司 | Repairing reproduction method for saw bit for metallurgy |
| CN201565672U (en) * | 2009-11-05 | 2010-09-01 | 唐山冶金锯片有限公司 | Hard alloy gear circular saw blade capable of recycling |
| CN101992327A (en) * | 2010-12-10 | 2011-03-30 | 西南铝业（集团）有限责任公司 | Disc saw blade |
| CN102039449A (en) * | 2011-01-20 | 2011-05-04 | 唐山冶金锯片有限公司 | Assembly type tungsten carbide circular saw blade |
| CN202922034U (en) * | 2012-11-23 | 2013-05-08 | 唐山冶金锯片有限公司 | Clamp-type blade-inserted circular saw web of cutter block machine |
-
2020
- 2020-10-01 CN CN202011066598.6A patent/CN112170959A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563929A (en) * | 1984-08-30 | 1986-01-14 | Weyerhaeuser Company | Field repairable circular saw |
| CN2207251Y (en) * | 1994-07-13 | 1995-09-13 | 自贡硬质合金厂 | Tipped milling cutter |
| KR20050089569A (en) * | 2004-03-05 | 2005-09-08 | (주)대명기업 | Repair method for circular saw |
| CN101053915A (en) * | 2007-05-22 | 2007-10-17 | 马鞍山市威龙科工贸有限公司 | Repairing reproduction method for saw bit for metallurgy |
| CN201565672U (en) * | 2009-11-05 | 2010-09-01 | 唐山冶金锯片有限公司 | Hard alloy gear circular saw blade capable of recycling |
| CN101992327A (en) * | 2010-12-10 | 2011-03-30 | 西南铝业（集团）有限责任公司 | Disc saw blade |
| CN102039449A (en) * | 2011-01-20 | 2011-05-04 | 唐山冶金锯片有限公司 | Assembly type tungsten carbide circular saw blade |
| CN202922034U (en) * | 2012-11-23 | 2013-05-08 | 唐山冶金锯片有限公司 | Clamp-type blade-inserted circular saw web of cutter block machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sharma | A textbook of production engineering | |
| CN112077546A (en) | Method for processing crown-free die forging palm tree blade root type blade | |
| CN102039449A (en) | Assembly type tungsten carbide circular saw blade | |
| CN110253231B (en) | Machining method for removing burrs of solid retainer | |
| CN104096888A (en) | High-efficiency rough machining method suitable for titanium alloy forge pieces | |
| CN100571969C (en) | A kind of manufacture craft of machine holding carbide alloy rack type gear shaper cutter | |
| CN111168326B (en) | Assembly process of blind hole tool with high precision requirement | |
| CN112170959A (en) | Repairing method of mechanical clamping type hard alloy circular saw blade | |
| CN214291755U (en) | A frock clamp for numerical control lathe processing step hole | |
| CN214685261U (en) | Sheet profile milling device | |
| CN112317833B (en) | Method for machining internal spline in deep hole | |
| CN111805187B (en) | Processing method of assembly surface of dehumidifying blade | |
| CN212886399U (en) | Special tooling for machining valve stuffing box | |
| Meyers et al. | Basic machining reference handbook | |
| CN204221064U (en) | Main chord milling attachment | |
| CN210255175U (en) | Positioning mechanism | |
| CN215847720U (en) | Auxiliary positioning device suitable for polygonal workpiece | |
| CN212122407U (en) | Processing auxiliary jig for sealing ring inclined notch | |
| CN216227301U (en) | Tool for beveling nickel alloy forged pipe | |
| CN112676767B (en) | Assembling method of high-precision form and position tolerance quick-change tool with vertical plate | |
| CN207205306U (en) | Cubic boron nitride cutting tool for grooving | |
| CN109623258B (en) | Method for repairing and processing straight surface of intermediate of large-sized turbine blade | |
| CN212599892U (en) | Self-reference positioning and clamping device for sheet punching and welding piece | |
| CN114211200B (en) | High-precision wheel spoke hole machining method | |
| CN210996536U (en) | Boring cutter for camshaft stepped hole guide bar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210105 |
|
| RJ01 | Rejection of invention patent application after publication |