CN108772588A - Shank is brazed fluted drill and its manufacturing method - Google Patents
Shank is brazed fluted drill and its manufacturing method Download PDFInfo
- Publication number
- CN108772588A CN108772588A CN201810599741.4A CN201810599741A CN108772588A CN 108772588 A CN108772588 A CN 108772588A CN 201810599741 A CN201810599741 A CN 201810599741A CN 108772588 A CN108772588 A CN 108772588A
- Authority
- CN
- China
- Prior art keywords
- shank
- blind hole
- fluted drill
- soldering
- cutting tip
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- 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
- B23K1/002—Soldering by means of induction heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention belongs to metal cutting tool and manufacturing technology, it is related to a kind of shank soldering fluted drill and its manufacturing method.Shank soldering fluted drill includes shank and cutting tip, and shank center is drilled with blind hole, and cutting tip rear end is co-axially inserted blind hole, and clearance fit, brazing material is filled in the fit clearance and bottom gap of cutting tip rear end and blind hole.The present invention is attached the shank and cutting tip of Split type twist drill using brazing mode, and bonding strength is high, presentation quality is good；Heating soldering is carried out to the workpiece in fixture by way of sensing heating, manufacturing process is simple, coaxial precision is easy to ensure, manufacturing cost is low.
Description
Technical field
The invention belongs to metal cutting tool and manufacturing technology, it is related to a kind of shank soldering fluted drill and its manufacturing method.
Background technology
There are mainly two types of structure types for existing fluted drill：
One kind is monolithic construction, i.e. fried dough twist drill shank is process with cutting portion by whole tool steel material, this structure fiber crops
The cutting portion that flower bores is same expensive tool steel with handle portion, and the consumption of one side precious materials is larger, is on the other hand manufactured
Complex procedures, it is artificial more, thus product cost is higher；
Another kind is seperated linking structure, i.e. fluted drill cutting portion is processed with handle portion using different materials and connected again respectively
It connects, this structure can reduce the use of valuable tool steel material, reduce material cost.But in prior art, shank and drill bit
The connection of cutting portion rear end mostly use riveting, circular cone self-locking, retaining rubber, it is radial wear the modes such as pin and realize, not only process part processing is added
Work required precision is higher, the torsional strength after connection is not high, and apex point is big relative to shank radial run-out, and production process is numerous
It is miscellaneous, productivity is low.
Invention content
Split connection structure is used the technical problem to be solved by the invention is to provide a kind of, the cost of material is low, and ties
Close high, easy to process, the coaxial shank soldering fluted drill with high accuracy of intensity and its manufacturing method.
The shank soldering fluted drill of the present invention includes shank and cutting tip, and shank center is drilled with blind hole, after cutting tip
End is co-axially inserted shank blind hole and clearance fit, and brazing material is filled in fit clearance and blind via bottom gap.
The composition and weight percent of the brazing material be：Ag 38-42%, Cu 14-16%, Zn 18-20%, Cd
25-28%.
The cutting tip is tool steel material, and shank is carbon steel material.
The shank is regular hexagon cross sectional shape.
The manufacturing method of the shank soldering fluted drill of the present invention includes the following steps：
A. part is processed, and first manufactures the shank and cutting tip of fluted drill respectively, diameter and cutting tip are drilled out at shank center
The blind hole of backend space cooperation；
B. equipment prepares, and disposes assembling jig, the assembling jig can be by shank and the same axle clamp of cutting portion on the heating
Hold positioning, the heating device can will be more than the workpiece heat on assembling jig to brazing material melts temperature；
Shank blind hole is first fixed on assembling jig by c. soldering connection upward, is packed into blind hole and is designed quantitative soldering material
Material, then starts heating device, makes the brazing material melts in blind hole, then cutting tip is inserted into blind hole, make it in mounting clip
With after the coaxial positioning of shank on tool, stops heating workpiece, make brazing material cooled and solidified, then remove workpiece, completion manufactured
Journey.
The heating device is induction heater.The working frequency of induction heater is 50~80KHZ.
The present invention is attached the shank and cutting portion of Split type twist drill using brazing mode, bonding strength height,
Presentation quality is good；Heating soldering is carried out to the workpiece in fixture by way of sensing heating, manufacturing process is simple, coaxial smart
Degree be easy to ensure, manufacturing cost it is low.
Description of the drawings
Fig. 1 is the shank soldering fluted drill broken section structural schematic diagram of the embodiment of the present invention.
Specific implementation mode
As shown, shank soldering fluted drill includes shank 1 and cutting tip 2, shank center is provided with blind hole, cutting portion
Point rear end is co-axially inserted blind hole and clearance fit, cutting tip rear end（Straight shank twist drill cylindrical handle part）With the inner wall of blind hole it
Fit clearance 3 and bottom gap 4 in be filled with brazing material.Cutting portion is tool steel material, and shank is carbon steel material.Shank
For regular hexagon cross sectional shape.The composition and weight percent of the brazing material be：Ag 40%,Cu 15%,Zn 18%,Cd
26%。
The manufacturing method of the embodiment of the present invention includes the following steps：
A. part is processed, and the hexagon shank and cutting tip of carbon steel and high speed steel making fluted drill is first respectively adopted, in shank
Center drills out diameter and cutting tip rear end（Straight shank twist drill cylindrical handle part）The blind hole of clearance fit；
B. equipment prepares, and disposes assembling jig, assembling jig can be by shank and the same axle clamp of cutting tip in induction heater
Hold positioning, induction heater can be by electromagnetic induction method by the workpiece heat on assembling jig to brazing material melts temperature
It is more than fusion temperature；
Shank blind hole is first fixed on assembling jig by c. soldering connection upward, is packed into blind hole and is designed quantitative soldering material
Material, then starts induction heater, makes the brazing material melts in blind hole, then cutting portion is inserted into blind hole, make it in mounting clip
It is coaxially positioned after fixing with shank on tool, stops heating workpiece, make brazing material cooled and solidified, then remove workpiece, complete to make
Make process.The working frequency of induction heater is 50~80KHZ, and operating current is 40~55A.
Claims (7)
1. a kind of shank is brazed fluted drill, including shank and cutting tip, it is characterized in that：Shank center is drilled with blind hole, cutting portion
Point rear end is inserted into blind hole and forms clearance fit, and brazing material is filled in fit clearance and bottom gap.
2. shank according to claim 1 is brazed fluted drill, it is characterized in that：The cutting portion is tool steel material, shank
For carbon steel material.
3. shank according to claim 1 is brazed fluted drill, it is characterized in that：The shank is regular hexagon cross sectional shape.
4. shank according to claim 1 is brazed fluted drill, it is characterized in that：The composition and weight percent of the brazing material
Number is：Ag 38-42%, Cu 14-16%, Zn 18-20%, Cd 25-28%.
5. a kind of manufacturing method of shank soldering fluted drill, it is characterized in that：Include the following steps,
A. part is processed, and first manufactures the shank and cutting tip of fluted drill respectively, diameter and cutting tip are drilled out at shank center
The blind hole of backend space cooperation；
B. equipment prepares, and disposes assembling jig, the assembling jig can be coaxial by shank and cutting tip on the heating
Clamping position, the heating device can will be more than the workpiece heats on assembling jig to brazing material melts temperature；
Shank blind hole is first fixed on assembling jig by c. soldering connection upward, is packed into blind hole and is designed quantitative soldering material
Material, then starts heating device, makes the brazing material melts in blind hole, then cutting portion is inserted into blind hole, make it in assembling jig
After the upper coaxial positioning with shank, stops heating workpiece, make brazing material cooled and solidified, then remove workpiece, complete manufacturing process.
6. the manufacturing method of shank soldering fluted drill according to claim 5, it is characterized in that：The heating device is induction
Heater.
7. the manufacturing method of the soldering fluted drill of the shank described in 6 is wanted according to right, it is characterized in that：The working frequency of induction heater
For 50~80KHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810599741.4A CN108772588A (en) | 2018-06-12 | 2018-06-12 | Shank is brazed fluted drill and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810599741.4A CN108772588A (en) | 2018-06-12 | 2018-06-12 | Shank is brazed fluted drill and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108772588A true CN108772588A (en) | 2018-11-09 |
Family
ID=64025893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810599741.4A Withdrawn CN108772588A (en) | 2018-06-12 | 2018-06-12 | Shank is brazed fluted drill and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108772588A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114304862A (en) * | 2021-12-06 | 2022-04-12 | 上海惠而顺精密工具股份有限公司 | Grinding cutter, manufacturing method of cutter and using method of cutter |
| CN115056156A (en) * | 2022-07-21 | 2022-09-16 | 上海惠而顺精密工具股份有限公司 | Split type grinding tool welding method and grinding tool thereof |
-
2018
- 2018-06-12 CN CN201810599741.4A patent/CN108772588A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114304862A (en) * | 2021-12-06 | 2022-04-12 | 上海惠而顺精密工具股份有限公司 | Grinding cutter, manufacturing method of cutter and using method of cutter |
| CN115056156A (en) * | 2022-07-21 | 2022-09-16 | 上海惠而顺精密工具股份有限公司 | Split type grinding tool welding method and grinding tool thereof |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181109 |
|
| WW01 | Invention patent application withdrawn after publication |