CN207103921U - The hidden hole drilling in interior cold hole - Google Patents
The hidden hole drilling in interior cold hole Download PDFInfo
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- CN207103921U CN207103921U CN201720168976.9U CN201720168976U CN207103921U CN 207103921 U CN207103921 U CN 207103921U CN 201720168976 U CN201720168976 U CN 201720168976U CN 207103921 U CN207103921 U CN 207103921U
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- sword
- knife bar
- head
- cooling
- chip area
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Abstract
The utility model discloses a kind of hidden hole drilling in interior cold hole, including knife bar, spiral chip area is provided with the knife bar, also include two cooling ducts, the chip area is arranged to two, the inlet of two cooling ducts is located at the head of knife bar located at the end in staight shank portion, liquid outlet, and the part cooling duct in the knife bar is helically set, and the helicity of the cooling duct is identical with the helicity of chip area.Two cooling ducts are set and twist set, two cooling ducts are set in circle is deviateed, and will not cause because settings of cooling duct causes cutter hub wall thickness excessively thin and cause the helicity of chip area than it is relatively low the problem of so that both can guarantee that the helicity of chip area and can farthest ensure influence to structure of the cutter body intensity after the setting of cooling duct.
Description
Technical field
A kind of metal cutting tool is the utility model is related to, more particularly to a kind of hidden hole drilling in interior cold hole.
Background technology
Existing drill bit, drilling deep hole are easy to burn out drill bit, once burning out many effective members that will rub.Particularly car
Spiral bit on bed, in deep hole processing, because chip removal is extruded outward, coolant or lubricant are not easily accessible the head of drill bit
Portion, because temperature is too high, cause to burn out drill bit.
On the other hand, the Chinese patent that Authorization Notice No. is CN204321258U, the applying date is on November 20th, 2014 discloses
A kind of more interior cold hole interchangeable blade groove indexable drill cutter hubs, it sets in the first helical flute at center insert mounting groove
It is cold hole and in drill bit cutter hub drilling position two knives of tip designs in second in respect of cold hole in a center insert chip area
Cold hole is cold hole in first at the top of body.
Above-mentioned drill bit cutter hub can play the effect cooled down to drill bit cutter hub, avoid knife by the setting in interior cold hole
Head is burned, and still, due to being provided with helical flute on drill bit cutter hub, cold hole is to set again in center insert chip area in addition
At the center of drill bit cutter hub, this make it that the structural strength of whole cutter hub is very low, although solve do not cool down caused by burning
Bad problem, but formidable opponent's step-down can be caused, cause its service life to be improved little.
Utility model content
The purpose of this utility model is to provide a kind of hidden hole drilling in interior cold hole, and tool improves the effect of service life.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of hidden hole drilling in interior cold hole, including knife bar, spiral chip area is provided with the knife bar, also includes two
Cooling duct, the chip area are arranged to two, and the inlet of two cooling ducts is set located at the end in staight shank portion, liquid outlet
In the head of knife bar, and the part cooling duct in the knife bar is helically set, the helicity of the cooling duct with
The helicity of chip area is identical.
It is arranged such, two cooling ducts is set and twist set so that two cooling ducts can be in deviate circle to set
Put, and will not cause because the setting of cooling duct causes cutter hub wall thickness excessively thin and causes the helicity of chip area to be asked than relatively low
Topic so that both can guarantee that the helicity of chip area and can farthest ensure cooling duct after setting to structure of the cutter body intensity
Influence.
More preferably：The head of the knife bar is provided with two Cooling Holes, and described Cooling Holes one end connects with cooling duct
The logical, other end forms the liquid outlet through the head of knife bar；The diameter of the Cooling Holes is less than the diameter of cooling duct.
It is arranged such, by the setting of Cooling Holes to reduce the openings of sizes of liquid outlet, the advantage is that and be easy to cooling logical
Production, the processing of road and Cooling Holes.
More preferably：The head position of the knife bar is provided with mounting groove, passes through fixing bolt in the mounting groove
Blade is installed.
It is arranged such, blade is arranged to removably so that changes upon wear, without knife is carried out more to whole
Change, reach cost-effective effect.
More preferably：The Cooling Holes are inclined to set.
It is arranged such, by being obliquely installed the fixing bolt to avoid for installing blade.
More preferably：Two blades on the head of the knife bar are respectively the first sword and the second sword, and described
For distance between one sword and the second sword and knife bar axial line respectively in one small one big setting, the side of the first sword two is located at axial line
Both sides, maximum gauge between first sword and axial line is more than the minimum diameter between the second sword and axial line, described second
Maximum gauge between sword and axial line is more than the diameter of knife bar.
It is arranged such so that two blades being made up of the first sword and the second sword can cut the entire surface portalled, simultaneously
So that knife bar side wall will not contradict with getting the madial wall in hole.
More preferably：First sword is more than the second sword in the head of knife bar in the height of projection on the head of knife bar
On height of projection.
It is arranged such so that in punching, the first sword first contacts with workpiece, the second sword is contacted with workpiece again and gets
Complete hole, reduce contact area when starting punching, cause knife bar to deform because resistance is excessive when avoiding just starting punching
The problem of occur.
More preferably：The blade on the head that first sword and the second sword protrude from knife bar is inclined to set.
Be arranged such, further reduce start punching when and workpiece contact area.
More preferably：The incline direction of first sword and the second sword is to be tilted from the first sword to the second sword.
It is arranged such so that an elder generation of first sword away from the second sword contacts with workpiece is cut, and what is now cut is
The position between edge and center in hole, diffuses to form whole hole, being arranged such makes to both sides gradually in drill process
It must punch and more stablize, accuracy is higher.
In summary, the utility model has the advantages that：
1st, there is good cooling effect, and because the cooling duct of uniqueness is set, while also assures that the structure of knife bar
Intensity so that the service life of the hidden hole drilling in interior cold hole significantly improves；
2nd, the structure of the first sword and the second sword, position setting are so that relatively stable in cutting, and particularly just beginning is in work
When being punched on part, chip resistance is reduced, good protective effect is all served to blade and knife bar, and punch and more stablize,
Precision is higher.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment；
Fig. 2 is the partial side view of knife bar in embodiment；
Fig. 3 is the front view of embodiment.
In figure, 1, knife bar；11st, chip area；12nd, cooling duct；13rd, Cooling Holes；2nd, butting section；3rd, staight shank portion；4th, blade；
41st, the first sword；42nd, the second sword；5th, liquid outlet；6th, inlet.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in the scope of protection of the utility model by Patent Law.
A kind of hidden hole drilling in interior cold hole, as shown in figure 1, including in knife bar 1, butting section 2 and the staight shank portion 3 being wholely set,
Butting section 2 is between knife bar 1 and staight shank portion 3, and in the arc transition of knife bar 1 to butting section 2, the diameter of butting section 2 is more than staight shank
Portion 3 and the diameter of knife bar 1.
The chip area 11 of two spiral shapes setting is provided with knife bar 1, chip area 11 is extended on butting section 2.In knife bar 1
Head position be provided with mounting groove, mounting groove is provided with two, is respectively arranged on two chip areas 11, is all provided with two mounting grooves
Blade 4 is equipped with, blade 4 is installed by fixing bolt and fixed.
Two blades 4 respectively the first sword 41 and the second sword 42 on the head of knife bar 1, wherein, as shown in figure 3, the
Distance between one sword 41 and the axial line of knife bar 1 is more than the distance between the second sword 42 and the axial line of knife bar 1, and 41 liang of sides of the first sword
Maximum gauge between the both sides of the axial line of knife bar 1, the first sword 41 and axial line is more than between the second sword 42 and axial line most
Minor diameter, the maximum gauge between the second sword 42 and axial line are more than the diameter of knife bar 1.
Referring to Figures 1 and 2, the head of the prominent knife bar 1 of the first sword 41 and the second sword 42 is set, wherein, the first sword 41 in
Height of projection on the head of knife bar 1 is more than the second sword 42 in the height of projection on the head of knife bar 1.Also, the He of the first sword 41
The blade on the head that the second sword 42 protrudes from knife bar 1 is inclined to set, and the incline direction of the first sword 41 and the second sword 42 is from the
One sword 41 tilts to the second sword 42.
As shown in figure 1, being additionally provided with two cooling ducts 12 on the hidden hole drilling in cold hole inside, two cooling ducts 12 are run through simultaneously
Knife bar 1, butting section 2 and staight shank portion 3, the inlet 6 of two cooling ducts 12 are located at knife bar located at the end in staight shank portion 3, liquid outlet 5
1 head.Also, the part cooling duct 12 in knife bar 1 is helically set, the helicity and chip area of cooling duct 12
11 helicity is identical.
The head of knife bar 1 is provided with two Cooling Holes 13, and the one end of two Cooling Holes 13 with two cooling ducts 12 with being located at knife respectively
One end connection of the cutter head of bar 1, the other end form liquid outlet 5 through the head of knife bar 1, and the diameter of two Cooling Holes 13 is logical less than cooling
The diameter in road 12 is used to strengthen hydraulic pressure, and, Cooling Holes 13 are inclined to set for avoiding fixing bolt.
Discharged by setting two spiral shape chip areas 11 to cut, in two cooling ducts 12 of interior setting of knife bar 1 and helically
Shape is set, while ensureing that coolant can be sprayed by cooling duct 12 from the head of knife bar 1 so that two cooling ducts 12
It can be in deviate circular setting, will not cause because the setting of cooling duct 12 causes cutter hub wall thickness excessively thin and causes chip area 11
Helicity than it is relatively low the problem of so that both can guarantee that the helicity of chip area 11 and can farthest ensure cooling duct
Influence after 12 settings to structure of the cutter body intensity.
In addition, one jiao during punching on the first sword 41 first contacts with workpiece and is cut, during cutting gradually from
Initial cutting point spreads to both sides, ultimately forms whole hole, highly stable in polishing, and reduces torsion when starting punching
Turn power and the frictional force to blade 4, serve the effect for improving service life to a certain extent.
Claims (5)
1. a kind of hidden hole drilling in interior cold hole, including knife bar (1), spiral chip area (11) is provided with the knife bar (1), its
It is characterized in：Also include two cooling ducts (12), the chip area (11) is arranged to two, and two cooling duct (12) are entered
Liquid mouth (6) is located at the head of knife bar (1), and the portion in the knife bar (1) located at the end of staight shank portion (3), liquid outlet (5)
Point cooling duct (12) is helically set, and the helicity of the cooling duct (12) is identical with the helicity of chip area (11), institute
The head for stating knife bar (1) is provided with two Cooling Holes (13), and described Cooling Holes (13) one end connects with cooling duct (12), the other end
The liquid outlet (5) is formed through the head of knife bar (1)；The diameter of the Cooling Holes (13) is less than the straight of cooling duct (12)
Footpath；The head position of the knife bar (1) is provided with mounting groove, and the mounting groove is interior to be provided with blade (4) by fixing bolt；If
In two blades (4) on the head of the knife bar (1) be respectively the first sword (41) and the second sword (42), first sword (41) and
Respectively in one small one big setting, the side of the first sword (41) two is located at distance between second sword (42) and knife bar (1) axial line
The both sides of axial line, maximum gauge of first sword (41) between axial line are more than minimum of the second sword (42) between axial line
Diameter, maximum gauge of second sword (42) between axial line are more than the diameter of knife bar (1).
2. the hidden hole drilling in interior cold hole according to claim 1, it is characterized in that：The Cooling Holes (13) are inclined to set.
3. the hidden hole drilling in interior cold hole according to claim 1, it is characterized in that：First sword (41) is in the head of knife bar (1)
Height of projection in portion is more than the second sword (42) in the height of projection on the head of knife bar (1).
4. the hidden hole drilling in interior cold hole according to claim 3, it is characterized in that：First sword (41) and the second sword (42) are prominent
Blade for the head of knife bar (1) is inclined to set.
5. the hidden hole drilling in interior cold hole according to claim 4, it is characterized in that：First sword (41) and the second sword (42)
Incline direction is to be tilted from the first sword (41) to the second sword (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168976.9U CN207103921U (en) | 2017-02-24 | 2017-02-24 | The hidden hole drilling in interior cold hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168976.9U CN207103921U (en) | 2017-02-24 | 2017-02-24 | The hidden hole drilling in interior cold hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207103921U true CN207103921U (en) | 2018-03-16 |
Family
ID=61595481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720168976.9U Active CN207103921U (en) | 2017-02-24 | 2017-02-24 | The hidden hole drilling in interior cold hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207103921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676615A (en) * | 2020-12-16 | 2021-04-20 | 浙江坤博精工科技股份有限公司 | Anti-deviation spade drill |
-
2017
- 2017-02-24 CN CN201720168976.9U patent/CN207103921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676615A (en) * | 2020-12-16 | 2021-04-20 | 浙江坤博精工科技股份有限公司 | Anti-deviation spade drill |
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