CN110757115B - Production process of key knife with double-row anti-theft lock cylinder configured with keys - Google Patents
Production process of key knife with double-row anti-theft lock cylinder configured with keys Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 73
- 238000000227 grinding Methods 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010937 tungsten Substances 0.000 claims abstract description 22
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000010941 cobalt Substances 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 14
- 238000003801 milling Methods 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
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Abstract
The invention discloses a key knife production process with double-row anti-theft lock cylinders and keys, which comprises the following steps of preparing raw materials; step difference processing; grooving the blade part: carrying out cylindrical shovel back treatment; processing the excircle back angle; processing end tooth gaps; processing end tooth back angles; and (4) carrying out subsequent processing on the key knife product, including appearance and data inspection, cleaning, marking and packaging. According to the key knife production process for configuring keys by double rows of anti-theft lock cylinders, the combined design of angle drilling and milling and side edge milling grooves is adopted, the requirements of the original two types of tools are effectively integrated into one tool for realizing, and the machinability of one-step clamping of the key knife for configuring keys by double rows of anti-theft lock cylinders is ensured; the high-grade wear-resistant and fracture-resistant integral tungsten steel fine grinding material is adopted, so that the key preparation precision, the durability and the service life of the cutter are ensured; reasonable cutter performance parameter design ensures good cutting performance of the cutter, novel process, simple operation and good application prospect.
Description
Technical Field
The invention relates to the technical field of key knives, in particular to a key knife production process with double-row anti-theft lock cylinders for key configuration.
Background
The lock core is a main part for controlling the unlocking of the lock, is a heart of the lock, and is a core part which can rotate and drive the lock bolt to move along with a key. The lock core adopts multiple anti-theft technologies, multiple special-shaped anti-pulling marbles prevent technical opening, and the lock core has high safety performance of preventing technical opening by matching with unique structural design of the marbles and the blades. The double lock core of prohibiting stealing of positive one-step at present has revolutionary trilateral pick-proof recess, and the pick-proof performance is promoted comprehensively to firmer C level tool to lock. After the door is locked, the thickened reinforced bolt matched with the B-level lock is automatically ejected out, so that the anti-prying function of the lock point of the side lock is enhanced to the utmost extent without adding again.
At present, a latest encryption lock head is adopted, a key is added with a function of preventing poking, the interaction rate reaches 50 ten-thousandth, technical unlocking is effectively prevented, a master key is prevented from being opened, an electric vibration gun is refused, tinfoil opening is forbidden, a bump key is prevented from being opened, and the problem that an anti-theft door cannot be prevented from being stolen is solved. However, because the precision of the lock cylinder is improved, the key configuration difficulty is also synchronously enhanced, and the existing lock cylinder with double-row anti-theft function has many defects in the key configuration process, such as complex configuration procedures (punching and groove milling), high configuration cost (combination of two sets of tools), and the like.
How to rapidly and effectively manufacture a special key knife for processing double rows of step-positive anti-theft lock cylinder configuration keys is a problem which is continuously solved at present.
Disclosure of Invention
The invention aims to overcome the defects of the existing double-row anti-theft lock cylinder that a plurality of defects exist in the key configuration process, a special key knife is not provided, the configuration is difficult, the configuration cost is high, and the operation is complicated. According to the key knife production process for configuring keys by double rows of anti-theft lock cylinders, the combined design of angle drilling and milling and side edge milling grooves is adopted, the requirements of the original two types of tools are effectively integrated into one tool for realizing, and the machinability of one-step clamping of the key knife for configuring keys by double rows of anti-theft lock cylinders is ensured; the high-grade wear-resistant and fracture-resistant integral tungsten steel fine grinding material is adopted, so that the key preparation precision, the durability and the service life of the cutter are ensured; reasonable design of cutter performance parameters, guarantee of good cutting performance of the cutter, novel process, simplicity in operation, high cost product rate, easiness in implementation and good application prospect.
In order to achieve the purpose, the invention adopts the technical scheme that:
a key knife production process with double-row anti-theft lock cylinders and keys, which comprises the following steps,
step (A), preparing raw materials: selecting high-grade wear-resistant and fracture-resistant integral tungsten steel, wherein the length of the integral tungsten steel is 35-45 mm;
step (B), step difference processing: accurately grinding a corresponding integral tungsten steel bar in a segment difference machine to form a segment difference blank, wherein the diameter of the front end of the segment difference processed by the segment difference is 3.0-4.0 mm, the angle of the front end of the segment difference is 50-70 degrees, and the diameter of the bottom of the segment difference is 1.0-2.0 mm;
step (C), grooving the blade part: adding a segment difference blank after segment difference into a five-axis grinding center, and slotting the front end part of the segment difference blank by using a parallel grinding wheel to form a blade slotting blank, wherein the helical angle of the blade slotting treatment is 20-40 degrees, the slotting front angle is 2-10 degrees, and the core diameter is 0.8-1.4 mm;
step (D), carrying out cylindrical shovel back treatment: using a parallel grinding wheel to carry out excircle back shoveling processing on the blank slotted on the edge part to form an excircle back shoveling blank, wherein the depth of a back shoveled by the excircle back shoveling processing is 0.05 mm-0.2 mm;
step (E), processing the excircle clearance angle: performing excircle relief angle processing on the excircle shovel back blank by using a bowl-shaped grinding wheel to form an excircle relief angle blank, wherein the excircle relief angle processed edge diameter is 3.2-3.6 mm, the edge length is 2-4.0 mm, the first plane relief angle is 6-12 degrees, the second plane relief angle is 16-28 degrees, the chamfer angle of a tool nose is 55-75 degrees, the diameter of the bottom is 1.2-1.8 mm, and an end tooth chamfer is arranged;
step (F), processing end tooth backlash: carrying out tooth clearance processing on the excircle relief angle blank by using an angle grinding wheel to form an end tooth clearance blank, wherein the end tooth subjected to tooth clearance processing comprises a first long tooth and a second short tooth, the diameter of the bottom of the long dimension of the long tooth is 0.7-0.95mm, the diameter of the bottom of the long dimension of the short tooth is 0.25-0.6mm, and the long tooth needs to pass through the center by 0.02-0.2 mm;
step (G), end tooth back angle treatment: carrying out end tooth back angle processing on the end tooth clearance blank by using a bowl-shaped grinding wheel to form a key cutter product, wherein the end tooth first back angle processed by the end tooth back angle is 6-12 degrees, and the end tooth second back angle is 14-22 degrees;
and (H) carrying out subsequent processing on the key knife product, including appearance and data inspection, cleaning, marking and packaging.
The production process of the key blade with the double-row anti-theft lock cylinder provided with the key comprises the step (A), wherein the high-grade wear-resistant and fracture-resistant integral tungsten steel is a tungsten steel fine grinding round bar material containing 8-15% of cobalt.
According to the production process of the key knife with the double-row anti-theft lock cylinder provided with the key, the type of the tungsten steel fine grinding round bar material containing 8-15% of cobalt is K20-K30.
In the production process of the key blade with the double-row anti-theft lock cylinder provided with the key, in the step (B), the processing technological parameters of the section difference treatment are that the linear speed of a grinding wheel is 25-40m/s, the feeding is 0.05-0.2mm/r, and the processing load power is 2-20%.
In the production process of the key blade with the double-row anti-theft lock cylinder provided with the key, in the step (C), the processing technological parameters of the blade part grooving treatment are that the linear speed of a grinding wheel is 20-35m/s, the feeding is 0.02-0.1mm/r, and the processing load power is 2-20%.
The key knife production process with the double-row anti-theft lock cylinder provided with the key comprises the step (D), wherein the machining process parameters of the excircle back shoveling treatment are that the linear speed of a grinding wheel is 20-35m/s, the feeding is 0.05-0.15mm/r, and the machining load power is 2-20%.
The key knife production process with the double-row anti-theft lock cylinder provided with the key comprises the step (E), wherein the machining process parameters of the excircle back shoveling treatment are that the linear speed of a grinding wheel is 20-35m/s, the feeding is 0.02-0.1mm/r, and the machining load power is 2-20%.
In the production process of the key blade with the double-row anti-theft lock cylinder provided with the key, in the step (F), the end tooth backlash treatment is that the machining process parameters are that the linear speed of a grinding wheel is 20-35m/s, the feeding is 0.01-0.06mm/r, and the machining load power is 2-20%.
In the key knife production process for configuring the key with the double-row anti-theft lock cylinder, in the step (H), the end tooth back angle treatment is that the processing technological parameters are that the linear speed of a grinding wheel is 20-35m/s, the feeding is 0.01-0.06mm/r, and the processing load power is 2-20%.
The invention has the beneficial effects that: according to the key knife production process for configuring keys by double rows of anti-theft lock cylinders, the combined design of angle drilling and milling and side edge milling grooves is adopted, the requirements of the original two types of tools are effectively integrated into one tool for realizing, and the machinability of one-step clamping of the key knife for configuring keys by double rows of anti-theft lock cylinders is ensured; the high-grade wear-resistant and fracture-resistant integral tungsten steel fine grinding material is adopted, so that the key preparation precision, the durability and the service life of the cutter are ensured; reasonable cutter performance parameter design guarantees the good cutting performance of cutter, novel process, easy operation, and the cost is high in the rate of products, realizes easily, the key sword of making through above technology, at the in-process of configuration key, because of the reinforcing of core intensity, the design of helicla flute, the cutter sharpness obviously promotes, anti breaking strength strengthens greatly, in the actual test process, this key sword's life-span is than traditional preparation mode, promotes about 50%, the key is once prepared more than 95% power, the secondary is prepared power 99%, has good application prospect.
Drawings
FIG. 1 is a flow chart of a key blade production process of a double-row anti-theft lock cylinder configured key of the present invention;
FIG. 2 is a schematic structural view of the key blade forming product of the present invention;
fig. 3 is a schematic view of the structure of the front end portion of the key blade product of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the process for producing the key blade with the double-row anti-theft lock cylinder provided with the key comprises the following steps,
step (A), preparing raw materials: selecting high-grade wear-resistant and fracture-resistant integral tungsten steel, wherein the length of the integral tungsten steel is 35-45 mm, the length can meet the requirements of different key machines, and the material cost is not too high, the high-grade wear-resistant and fracture-resistant integral tungsten steel is a tungsten steel fine grinding round bar material containing 8-15% of cobalt, preferably a tungsten steel fine grinding round bar material containing 8-15% of cobalt and K20-K30, the structural strength is high, and the material is suitable for processing double-row forbidden theft lock cylinder configuration keys;
step (B), step difference processing: accurately grinding a corresponding integral tungsten steel bar in a segment difference machine to form a segment difference blank, wherein the diameter of the front end of the segment difference treated by the segment difference is 3.0-4.0 mm, the angle of the front end of the segment difference is 50-70 degrees, the diameter of the bottom of the segment difference is 1.0-2.0 mm, the design of the segment difference angle is favorable for ensuring the rigidity of the edge part of a material on the basis of the principle of approaching an equilateral triangle, the processing technological parameters of the segment difference treatment are that the linear speed of a grinding wheel is 25-40m/s, the feeding is 0.05-0.2mm/r, the processing load power is 2-20 percent,
step (C), grooving the blade part: adding a segment difference blank after segment difference into a five-axis grinding center, and slotting the front end part of the segment difference blank by using a parallel grinding wheel to form an edge part slotting blank, wherein the helical angle of the edge part slotting treatment is 20-40 degrees, the slotting front angle is 2-10 degrees, the core diameter is 0.8-1.4 mm, the parameter design ensures the sharpness of a cutter under the condition of ensuring the strength of the center of a cutter body, and the processing technological parameters of the edge part slotting treatment are that the linear speed of the grinding wheel is 20-35m/s, the feeding is 0.02-0.1mm/r, and the processing load power is 2-20%;
step (D), carrying out cylindrical shovel back treatment: using a parallel grinding wheel to carry out excircle back shoveling processing on the blank slotted on the edge part to form an excircle back shoveling blank, wherein the depth of a shovel back of the excircle back shoveling processing is 0.05-0.2mm, the parameter design effectively removes redundant friction surfaces, reduces the cutting resistance of a cutter and keeps good cutting effect, and the processing technological parameters of the excircle back shoveling processing are that the linear speed of the grinding wheel is 20-35m/s, the feeding is 0.05-0.15mm/r and the processing load power is 2-20%;
step (E), processing the excircle clearance angle: the excircle back clearance processing is carried out on the excircle back-off blank by using a bowl-shaped grinding wheel to form the excircle back-off blank, the edge diameter of the excircle back-off processing is 3.2 mm-3.6 mm (the design of the edge at the position can avoid double rows of cutting interference with another row of key positions), the edge length is 2 mm-4.0 mm (the design of the edge length meets the thickness requirements of all the existing key blanks), the first plane back angle is 6-12 degrees, the second plane back angle is 16-28 degrees (the edge of a cutter can have good milling capability), the chamfer angle of the tool tip is 55-75 degrees, the diameter of the bottom is 1.2 mm-1.8 mm, and an end tooth chamfer is arranged (the angle design can perfectly fit the requirement of the inner marble of the lock core of the existing key and can perfectly fit the processed excircle hole position), the processing technological parameter of the back-off processing is that the linear velocity of the grinding wheel is 20-35m, the feeding is 0.02-0.1mm/r, and the processing load power is 2-20%;
step (F), processing end tooth backlash: carrying out tooth clearance processing on the excircle relief angle blank by using an angle grinding wheel to form an end tooth clearance blank, wherein the end tooth clearance processed end tooth has a long tooth and a short tooth, the diameter of the long bottom of the long tooth is 0.7-0.95mm, the diameter of the short bottom of the long tooth is 0.25-0.6mm, the long tooth needs to pass through the center by 0.02-0.2 mm, the end tooth clearance processing is that the processing technological parameters are that the linear speed of the grinding wheel is 20-35m/s, the feeding is 0.01-0.06mm/r, and the processing load power is 2-20%;
step (G), end tooth back angle treatment: using a bowl-shaped grinding wheel to process an end tooth back angle on an end tooth clearance blank to form a key cutter product, wherein as shown in figures 2 and 3, the end tooth first back angle processed by the end tooth back angle is 6-12 degrees, the end tooth second back angle is 14-22 degrees, the end tooth back angle is processed by processing technological parameters of grinding wheel linear speed of 20-35m/s, feeding of 0.01-0.06mm/r and processing load power of 2-20 percent;
and (H) carrying out subsequent processing on the key cutter product, wherein the subsequent processing comprises appearance and data inspection, cleaning, marking and packaging, and the appearance and data inspection needs to ensure that the cutter is free of defects, free of oil stains during cleaning, clear in marking and reliable and safe in packaging.
According to the key knife production process for configuring the key with the double-row anti-theft lock cylinders, the key knife manufactured by the process has the advantages that the sharpness of the knife is obviously improved and the breaking strength is greatly improved due to the enhancement of the strength of the knife core and the design of the spiral groove in the key configuration process, and in the actual test process, the service life of the key knife is improved by about 50% compared with that of the conventional configuration mode, the once key configuration power is more than 95%, and the twice key configuration power is 99%.
In conclusion, the key knife production process for configuring keys by double theft-proof lock cylinders adopts the combined design of angle drilling and milling and side edge groove milling, effectively integrates the processing requirements of the original two tools into one tool to realize, and ensures the machinability of one-time clamping of the key knife for configuring keys by double theft-proof lock cylinders; the high-grade wear-resistant and fracture-resistant integral tungsten steel fine grinding material is adopted, so that the key preparation precision, the durability and the service life of the cutter are ensured; reasonable design of cutter performance parameters, guarantee of good cutting performance of the cutter, novel process, simplicity in operation, high cost product rate, easiness in implementation and good application prospect.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A production process of a key knife with double theft-proof lock cylinders and keys is characterized in that: comprises the following steps of (a) carrying out,
step (A), preparing raw materials: selecting high-grade wear-resistant and fracture-resistant integral tungsten steel, wherein the length of the integral tungsten steel is 35-45 mm;
step (B), step difference processing: accurately grinding a corresponding integral tungsten steel bar in a segment difference machine to form a segment difference blank, wherein the diameter of the front end of the segment difference processed by the segment difference is 3.0-4.0 mm, the angle of the front end of the segment difference is 50-70 degrees, and the diameter of the bottom of the segment difference is 1.0-2.0 mm;
step (C), grooving the blade part: adding a segment difference blank after segment difference into a five-axis grinding center, and slotting the front end part of the segment difference blank by using a parallel grinding wheel to form a blade slotting blank, wherein the helical angle of the blade slotting treatment is 20-40 degrees, the slotting front angle is 2-10 degrees, and the core diameter is 0.8-1.4 mm;
step (D), carrying out cylindrical shovel back treatment: using a parallel grinding wheel to carry out excircle back shoveling processing on the blank slotted on the edge part to form an excircle back shoveling blank, wherein the depth of a back shoveled by the excircle back shoveling processing is 0.05 mm-0.2 mm;
step (E), processing the excircle clearance angle: performing excircle relief angle processing on the excircle shovel back blank by using a bowl-shaped grinding wheel to form an excircle relief angle blank, wherein the excircle relief angle processed edge diameter is 3.2-3.6 mm, the edge length is 2-4.0 mm, the first plane relief angle is 6-12 degrees, the second plane relief angle is 16-28 degrees, the chamfer angle of a tool nose is 55-75 degrees, the diameter of the bottom is 1.2-1.8 mm, and an end tooth chamfer is arranged;
step (F), processing end tooth backlash: carrying out tooth clearance processing on the excircle relief angle blank by using an angle grinding wheel to form an end tooth clearance blank, wherein the end tooth subjected to tooth clearance processing comprises a first long tooth and a second short tooth, the diameter of the bottom of the long dimension of the long tooth is 0.7-0.95mm, the diameter of the bottom of the long dimension of the short tooth is 0.25-0.6mm, and the long tooth needs to pass through the center by 0.02-0.2 mm;
step (G), end tooth back angle treatment: carrying out end tooth back angle processing on the end tooth clearance blank by using a bowl-shaped grinding wheel to form a key cutter product, wherein the end tooth first back angle processed by the end tooth back angle is 6-12 degrees, and the end tooth second back angle is 14-22 degrees;
and (H) carrying out subsequent processing on the key knife product, including appearance and data inspection, cleaning, marking and packaging.
2. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (A) the high-grade wear-resistant and fracture-resistant integral tungsten steel is a tungsten steel fine grinding round bar material containing 8-15% of cobalt.
3. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 2, characterized in that: the model of the tungsten steel fine grinding round bar material containing 8-15% of cobalt is K20-K30.
4. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (B) processing technological parameters of the step difference treatment are that the linear speed of the grinding wheel is 25-40m/s, the feeding is 0.05-0.2mm/r, and the processing load power is 2-20%.
5. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (C) processing technological parameters of the edge grooving treatment are that the linear speed of the grinding wheel is 20-35m/s, the feeding is 0.02-0.1mm/r, and the processing load power is 2-20%.
6. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (D) processing technological parameters of excircle back-shoveling treatment are that the linear speed of the grinding wheel is 20-35m/s, the feeding is 0.05-0.15mm/r, and the processing load power is 2-20%.
7. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (E) processing technological parameters of the excircle back-shoveling treatment are that the linear speed of the grinding wheel is 20-35m/s, the feeding is 0.02-0.1mm/r, and the processing load power is 2-20%.
8. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (F) processing the end tooth backlash by using the grinding wheel with linear speed of 20-35m/s, feeding of 0.01-0.06mm/r and processing load power of 2-20% as processing technological parameters.
9. The key blade production process of the double-row anti-theft lock cylinder configuration key according to claim 1, characterized in that: and (H) processing the end tooth back angle, wherein the processing technological parameters are that the linear speed of a grinding wheel is 20-35m/s, the feeding is 0.01-0.06mm/r, and the processing load power is 2-20%.
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| JP2000107925A (en) * | 1999-11-19 | 2000-04-18 | Hitachi Tool Engineering Ltd | High-performance end mill |
| CN102009216A (en) * | 2010-12-14 | 2011-04-13 | 株洲钻石切削刀具股份有限公司 | End milling cutter for processing nonferrous metal |
| CN102416494A (en) * | 2011-12-09 | 2012-04-18 | 深圳市金洲精工科技股份有限公司 | Micro drill and processing method thereof |
| CN202741990U (en) * | 2012-08-07 | 2013-02-20 | 江苏伟杰工具有限公司 | Novel straight-flute double-blade multifunctional stepped drill production device |
| EP2783778A1 (en) * | 2013-03-25 | 2014-10-01 | Palumbo Industries | Tool and method for milling a metal part |
| CN104669076A (en) * | 2014-12-05 | 2015-06-03 | 贵州西南工具(集团)有限公司 | Method for machining back angle of arc-shaped shovel of end mill |
| CN104858629A (en) * | 2015-04-27 | 2015-08-26 | 南京信达克工具科技发展有限公司 | Processing method of high-speed precise hard alloy reamer |
| CN207171028U (en) * | 2017-05-15 | 2018-04-03 | 江苏戴梦德钻石科技有限公司 | A kind of wolfram steel tack chit drill |
| CN207239251U (en) * | 2017-09-19 | 2018-04-17 | 苏州思麦科精密切削工具有限公司 | A kind of slotting cutter of processing high-hardness material |
| CN107442830A (en) * | 2017-09-30 | 2017-12-08 | 中国航天科技集团公司烽火机械厂 | A kind of slotting cutter for being used to finish and its processing method |
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