CN205551560U - Cold fluted drill in welding formula - Google Patents
Cold fluted drill in welding formula Download PDFInfo
- Publication number
- CN205551560U CN205551560U CN201620139511.6U CN201620139511U CN205551560U CN 205551560 U CN205551560 U CN 205551560U CN 201620139511 U CN201620139511 U CN 201620139511U CN 205551560 U CN205551560 U CN 205551560U
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- CN
- China
- Prior art keywords
- interior
- outer blade
- cutting part
- outer cutting
- inner core
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- Expired - Fee Related
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Abstract
The utility model discloses a cold fluted drill in welding formula belongs to cutting tool technical field, and it bores the body including outer cutting part and interior core including the welding drillstock together and the brill body, an interior annular has been offered to the position of have the helical shape land on the excircle of outer cutting part, the chip groove of helicoid between the land realizes being equipped with the internal thread in the outer cutting part including, the circle is close to drillstock, is equipped with the inlet on the outer cutting part, with interior annular intercommunication, be equipped with the external screw thread that closes with the interior thread to match of outer cutting part on the excircle of interior core, still offered an at least helicla flute on the excircle of interior core, outer cutting part and interior core pass through threaded connection together, then the helicla flute of interior core and the interior round interior cold hole that coordinates the helicoid of outer cutting part. The beneficial effects of the utility model are that: the clearance of interior cold hole is convenient to prevent the jam of smear metal deposit, prolong the life of fluted drill.
Description
Technical field
The utility model relates to cold fluted drill in a kind of welded type, belongs to cutting tool technical field.
Background technology
The inside of interior cold fluted drill has spiral Cooling Holes; when machining; coolant passes from Cooling Holes; play the effect of cooling fluted drill; reduce the cutting temperature of cutter; protection fluted drill does not damage cutting edge when High-speed machining because of overheated, thus extends the service life of fluted drill, is particularly well-suited to deep hole machining.But owing to interior Cooling Holes is spirality, and aperture is less, therefore adds and easily amasss chip at inner hole deposition man-hour, weakens cooling effect, and the chip deposited is difficult to clear up, get off will result in Cooling Holes blocking for a long time, the viscous bits of high temperature, seriously may result in fluted drill and fracture.
Utility model content
Technical problem to be solved in the utility model is to overcome the problems referred to above, and cold fluted drill in the welded type of cold hole chip in a kind of easy cleaning is provided.
The technical solution of the utility model is:
Cold fluted drill in a kind of welded type, including the steel body drillstock welded together and hard alloy drill body, it is characterised in that: drill body includes outer blade and inner core；Described outer blade is the ducted body run through, there is on the cylindrical of outer blade spiral land, spiral chip area is formed between land, the inner circle of outer blade is provided with internal thread, an inner groove is offered near the position of drillstock in inner circle, outer blade is provided with inlet, connects with described inner groove；The cylindrical of described inner core is provided with the external screw thread that the internal thread with outer blade matches, and the cylindrical of inner core is further opened with at least one helicla flute；Outer blade is together by a threaded connection with inner core, then the helicla flute of inner core cooperatively forms spiral interior cold hole with the inner circle of outer blade, and this interior cold hole connects the inner groove of outer blade, and coolant enters from inlet, through inner groove, interior cold hole, discharge from the front end of drill body.
In above-mentioned welded type in cold fluted drill, the cylindrical of described inner core offers two helicla flutes the most centrosymmetric.
In above-mentioned welded type in cold fluted drill, between described drillstock and drill body, use the welding manner of V-shaped part interlocking-type.
The beneficial effects of the utility model are:
1, the cleaning of interior cold hole is convenient, thus prevent chip deposition blocking, extend the service life of fluted drill: owing to drill body is made up of threaded outer blade and inner core, in cleaning during cold hole, the outer blade as long as outwarding winding, in constituting, the helicla flute in cold hole is just exposed, and easily rinses, re-assemblies again and screw after washing；
2, using the welding manner of V-arrangement interlocking-type between drillstock and drill body, two parts are mutually locked, it is ensured that assembly dimensional accuracy and integral rigidity, meanwhile, the most unique correct cooperation position of this retaining mechanism, make drill body be easily mounted onto on the drillstock matched.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the partial sectional view of the utility model embodiment.
Fig. 3 is the partial sectional view of the utility model embodiment China and foreign countries blade.
Fig. 4 is drillstock and the structural representation of inner core in the utility model embodiment.
Detailed description of the invention
In conjunction with drawings and Examples, the utility model is further described:
As it is shown in figure 1, cold fluted drill in the welded type of the present embodiment, including steel body drillstock 10 and hard alloy drill body 20, the welding manner of V-shaped part 30 interlocking-type between drillstock 10 and drill body 20, is used to weld together.
Drill body 20 includes outer blade 40 and inner core 50.Outer blade 40 is the ducted body run through, and the cylindrical of outer blade 40 has spiral land 41, forms spiral chip area 42 between land 41.The inner circle of outer blade 40 is provided with internal thread 43, offers an inner groove 44 in inner circle near the position of drillstock 10, outer blade 40 is additionally provided with the inlet 45 of coolant, connect with described inner groove 44.The cylindrical of inner core 50 is provided with the external screw thread 51 that the internal thread 43 with outer blade 40 matches, at least one helicla flute 52 it is further opened with on the cylindrical of inner core 50, in the present embodiment, the cylindrical of inner core 50 offers two helicla flutes 52 the most centrosymmetric.Outer blade 40 is together by a threaded connection with inner core 50, then the helicla flute 52 of inner core 50 cooperatively forms spiral interior cold hole 52a with the inner circle of outer blade 40, this interior cold hole 52a connects the inner groove 44 of outer blade 40, coolant enters from inlet 45, through inner groove 44, interior cold hole 52a, finally discharge from the front end of drill body 20, play the effect of cooling fluted drill.
Owing to drill body 20 is made up of threaded outer blade 40 and inner core 50, in cleaning during cold hole 52a, as long as outwarding winding outer blade 40, in constituting, the helicla flute 52 of cold hole 52a is just exposed, and easily rinses, re-assemblies again and screw after washing.This structure is cold hole in being easy to periodic cleaning, thus prevents chip deposition blocking, extends the service life of fluted drill.
It is understood that for the person of ordinary skill of the art, other various corresponding changes and deformation can be made according to technology of the present utility model design, and all these change all should belong to the utility model scope of the claims with deformation.
Claims (3)
1. a cold fluted drill in welded type, including the steel body drillstock welded together and hard alloy drill body, it is characterised in that: drill body includes outer blade and inner core；
Described outer blade is the ducted body run through, there is on the cylindrical of outer blade spiral land, spiral chip area is formed between land, the inner circle of outer blade is provided with internal thread, an inner groove is offered near the position of drillstock in inner circle, outer blade is provided with inlet, connects with described inner groove；
The cylindrical of described inner core is provided with the external screw thread that the internal thread with outer blade matches, and the cylindrical of inner core is further opened with at least one helicla flute；
Outer blade is together by a threaded connection with inner core, then the helicla flute of inner core cooperatively forms spiral interior cold hole with the inner circle of outer blade, and this interior cold hole connects the inner groove of outer blade, and coolant enters from inlet, through inner groove, interior cold hole, discharge from the front end of drill body.
Cold fluted drill in welded type the most according to claim 1, it is characterised in that: offer two helicla flutes the most centrosymmetric on the cylindrical of described inner core.
Cold fluted drill in welded type the most according to claim 1, it is characterised in that: use the welding manner of V-shaped part interlocking-type between described drillstock and drill body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139511.6U CN205551560U (en) | 2016-02-25 | 2016-02-25 | Cold fluted drill in welding formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139511.6U CN205551560U (en) | 2016-02-25 | 2016-02-25 | Cold fluted drill in welding formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205551560U true CN205551560U (en) | 2016-09-07 |
Family
ID=56819568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620139511.6U Expired - Fee Related CN205551560U (en) | 2016-02-25 | 2016-02-25 | Cold fluted drill in welding formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205551560U (en) |
-
2016
- 2016-02-25 CN CN201620139511.6U patent/CN205551560U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20180225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |