CN208913208U - Drill bit for injection mold mode blind hole machining - Google Patents
Drill bit for injection mold mode blind hole machining Download PDFInfo
- Publication number
- CN208913208U CN208913208U CN201821338254.4U CN201821338254U CN208913208U CN 208913208 U CN208913208 U CN 208913208U CN 201821338254 U CN201821338254 U CN 201821338254U CN 208913208 U CN208913208 U CN 208913208U
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- Prior art keywords
- hole
- cutter hub
- pin
- ladder boss
- injection mold
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Abstract
The utility model discloses the drill bits for injection mold mode blind hole machining, the cutter hub being connected to including knife handle and by pin on knife handle, knife handle and cutter hub junction are provided with stepped hole, stepped hole includes the first stepped hole and the second stepped hole, knife handle bottom is provided with the first pin hole, and first pin hole run through the first stepped hole, the second pin hole is provided with below first pin hole, and second pin hole run through the second stepped hole, cutter hub side is provided with ladder boss, ladder boss includes the first ladder boss and the second ladder boss, first through hole is provided on first ladder boss, the second through-hole is provided on second ladder boss, blade and several fountain heads are provided on cutter hub, fountain head is set between adjacent two blade, the cutter hub other side is provided with the cutter head of integral molding, the top place of cutter head is provided with fillet, compared with prior art, reduce Stress when processing is concentrated, and the service life of mold is extended.
Description
Technical field
The utility model relates to field of drill, and in particular to a kind of drill bit for injection mold mode blind hole machining.
Background technique
1, water route hole, fixed screw holes, fabrication hole etc. are inevitably had in mold mode in injection mold manufacture
The blind hole of generation.General long-service die requires mold mode and is heat-treated, and generally exists for the ease of drilling die orifice
It is processed before heat treatment.In mold use process, mode has subtle cracking phenomena frequent occurrence, and tiny cracking is general
Subtle, by magnification at high multiple sem observation, the beginning of crackle makees the end that servant person is generally from mode blind hole, that is to say, that mould
Benevolence cracking has much relations with blind hole end.
2, the processing in hole generally uses drilling and milling in machine-building, and bores the drill bit of hole milling, and front end is wedge angle
Shape, the end of drilling bore hole is sharper angle, after mode is heat-treated, is inevitably stayed at wedge angle position
Lower thermal stress can remain in mode blind hole sharp corner within a very long time.
Summary of the invention
To solve the deficiencies in the prior art, it the purpose of this utility model is to provide a kind of structure is simple, is easily changed
Drill bit for injection mold mode blind hole machining.
In order to achieve the above objectives, the utility model adopts the following technical solutions:
For the drill bit of injection mold mode blind hole machining, it is connected to the cutter hub on knife handle including knife handle and by pin,
Knife handle and cutter hub junction are provided with stepped hole, and stepped hole includes the first stepped hole and the second stepped hole, and knife handle bottom is provided with
First pin hole, and the first pin hole runs through the first stepped hole, is provided with the second pin hole below the first pin hole, and the second pin hole is through the
Two stepped holes, cutter hub side are provided with ladder boss, and ladder boss includes the first ladder boss and the second ladder boss, the first rank
It is provided with first through hole on terraced boss, the second through-hole is provided on the second ladder boss, blade and several sprays are provided on cutter hub
Head, fountain head are set between adjacent two blade, and the cutter hub other side is provided with the cutter head of integral molding, and the top place of cutter head is set
It is equipped with fillet.
Preferably, aforementioned stepped hole is corresponding with ladder boss, cooperates, and is convenient for systematization, is conveniently replaceable, and cleans.
More preferably, aforementioned first pin hole and the second pin hole are mutually perpendicular to, and right-angled intersection keeps locking more more firm, no
It is easy to turn to.
It is highly preferred that aforementioned first through hole is corresponding with the first pin hole, the second through-hole is corresponding with the second pin hole, is convenient for pin
The insertion of nail.
It is further preferred that the center line of aforementioned blade and cutter hub is at 20 ° -30 °, processing easy to produce.
Specifically, the number of aforementioned fountain head is 2-4, sprays coolant liquid, reduces heat when tool sharpening, can also be with
Wash away part iron filings.
More preferably, aforementioned radius of corner and 1mm-5mm when processing mold, reduce stress and concentrate, extend the use of mold
Service life.
When having the beneficial effect that processing injection mold part blind hole of the utility model, by this process structure drill bit drilling
Processing can improve the stress distribution for processing hole sharp corner, stress distribution can be made more uniform, avoid concentrations, reduction in response to
Power concentrations generate fine cracks, extend the service life of mold, reduce cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
The meaning of appended drawing reference in figure: 1, knife handle, 2, cutter hub, 3, stepped hole, the 4, first pin hole, the 5, second pin hole, 6, rank
Terraced boss, 7, blade, 8, hole for water spraying, 9, cutter head.
Specific embodiment
Specific introduce is made to the utility model below in conjunction with the drawings and specific embodiments.
For the drill bit of injection mold mode blind hole machining, the cutter hub on knife handle 1 is connected to including knife handle 1 and by pin
2, knife handle 1 and 2 junction of cutter hub are provided with stepped hole 3, and stepped hole 3 includes the first stepped hole and the second stepped hole, 1 bottom of knife handle
It is provided with the first pin hole 4, and the first pin hole 4 runs through the first stepped hole, is provided with the second pin hole 5, and second below the first pin hole 4
Pin hole 5 runs through the second stepped hole, and the first pin hole 4 and the second pin hole 5 are mutually perpendicular to, and right-angled intersection keeps locking more more firm,
It is not easy to turn to.
2 side of cutter hub is provided with ladder boss 6, and ladder boss 6 includes the first ladder boss and the second ladder boss, ladder
Hole 3 is corresponding with ladder boss 6, cooperates, and is convenient for systematization, is conveniently replaceable, and cleans.Is provided on first ladder boss
One through-hole is provided with the second through-hole on the second ladder boss, and first through hole is corresponding with the first pin hole 4, the second through-hole and second
Pin hole 5 is corresponding, convenient for the insertion of pin.
It is provided with blade 7 and several fountain heads 8 on cutter hub 2, the center line of blade 7 and cutter hub 2 is at 20 ° -30 °, convenient for life
Processing is produced, fountain head 8 is set between adjacent two blade 7, and the number of fountain head 8 is 2-4, sprays coolant liquid, reduces cutter
Heat when processing can also wash away part iron filings, and 2 other side of cutter hub is provided with the cutter head 9 of integral molding, and cutter head 9 is top
Place is provided with fillet, radius of corner and 1mm-5mm, when processing mold, reduces stress and concentrates, extend the service life of mold.
When having the beneficial effect that processing injection mold part blind hole of the utility model, by this process structure drill bit drilling
Processing can improve the stress distribution for processing hole sharp corner, stress distribution can be made more uniform, avoid concentrations, reduction in response to
Power concentrations generate fine cracks, extend the service life of mold, reduce cost.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
Technical solution obtained, all falls in the protection scope of the utility model.
Claims (7)
1. being used for the drill bit of injection mold mode blind hole machining, it is connected to the cutter hub on knife handle including knife handle and by pin,
It is characterized in that, the knife handle and cutter hub junction are provided with stepped hole, and the stepped hole includes the first stepped hole and the second ladder
Hole, the knife handle bottom is provided with the first pin hole, and the first pin hole runs through the first stepped hole, is provided with below first pin hole
Second pin hole, and the second pin hole runs through the second stepped hole, the cutter hub side is provided with ladder boss, and the ladder boss includes
First ladder boss and the second ladder boss are provided with first through hole, the second ladder boss on the first ladder boss
On be provided with the second through-hole, blade and several fountain heads are provided on the cutter hub, the fountain head is set to adjacent two blade
Between, the cutter hub other side is provided with the cutter head of integral molding, and the top place of cutter head is provided with fillet.
2. the drill bit according to claim 1 for injection mold mode blind hole machining, which is characterized in that the stepped hole
It is corresponding with ladder boss.
3. the drill bit according to claim 1 for injection mold mode blind hole machining, which is characterized in that first pin
Hole and the second pin hole are mutually perpendicular to.
4. the drill bit according to claim 1 for injection mold mode blind hole machining, which is characterized in that described first is logical
Hole is corresponding with the first pin hole, and the second through-hole is corresponding with the second pin hole.
5. the drill bit according to claim 1 for injection mold mode blind hole machining, which is characterized in that the blade with
The center line of cutter hub is at 20 ° -30 °.
6. the drill bit according to claim 1 for injection mold mode blind hole machining, which is characterized in that the fountain head
Number be 2-4.
7. the drill bit according to claim 1 for injection mold mode blind hole machining, which is characterized in that the fillet half
Diameter and 1mm-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338254.4U CN208913208U (en) | 2018-08-20 | 2018-08-20 | Drill bit for injection mold mode blind hole machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338254.4U CN208913208U (en) | 2018-08-20 | 2018-08-20 | Drill bit for injection mold mode blind hole machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208913208U true CN208913208U (en) | 2019-05-31 |
Family
ID=66702194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821338254.4U Active CN208913208U (en) | 2018-08-20 | 2018-08-20 | Drill bit for injection mold mode blind hole machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208913208U (en) |
-
2018
- 2018-08-20 CN CN201821338254.4U patent/CN208913208U/en active Active
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