CN208991780U - A kind of small hole machined composite boring cutters - Google Patents
A kind of small hole machined composite boring cutters Download PDFInfo
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- CN208991780U CN208991780U CN201821822859.0U CN201821822859U CN208991780U CN 208991780 U CN208991780 U CN 208991780U CN 201821822859 U CN201821822859 U CN 201821822859U CN 208991780 U CN208991780 U CN 208991780U
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- rod segment
- boring
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- knife bar
- boring cutter
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Abstract
The utility model discloses a kind of small hole machined composite boring cutters, including knife handle, composite knife bar, boring cutter and milling cutter, knife bar mounting hole is provided on the knife handle, the composite knife bar is ladder-like, the composite knife bar includes the first rod segment, the second rod segment, third rod segment and the 4th rod segment, the boring cutter is mounted in the first rod segment, boring cutter mounting hole is offered in first rod segment, telescopic device is provided in the boring cutter mounting hole, the boring cutter is mounted in boring cutter mounting hole by the telescopic device, is provided with two blade milling cutters in second rod segment.The utility model structure is simple, by the way that boring cutter and milling cutter are arranged on composite knife bar, the processing of planet carrier top bar planet hole and chamfering can once be completed, dimensional accuracy is high, the geometric tolerances such as concentricity, circularity are good, meanwhile, by adding telescopic device between boring cutter and composite knife bar, keep the boring diameter of boring cutter adjustable, can be improved the machining accuracy in planet hole.
Description
Technical field
The utility model belongs to machine tools technical field, and in particular to a kind of small hole machined composite boring cutters.
Background technique
Coalcutter manufacture belongs to typical Single unit job lot production industry, and planet carrier is as company's conventional products, specification kind
Class is more, required precision is high, production process is complicated.Meanwhile the inner hole of planet carrier is process by boring, uses nonstandard boring and milling cutter
Type is extremely more, high production cost.
Planet carrier is carried out in process in the knife bar using Common boring cutter, the trembling of boring bar is it is obvious that processing
Planet hole surface poor quality out, dimensional accuracy cannot be guaranteed, be unable to satisfy processing quality requirement.Simultaneously as boring cutter exists
Using after a certain period of time, boring cutter blade is worn, and influences the machining accuracy in planet hole, and therefore, it is necessary to carry out precision to it to repair
It is multiple, in order to not influence production efficiency, then new boring cutter is needed replacing, will increase production cost in this way, and increases manpower object
The investment of power.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide a kind of aperture
Processing composite boring cutters, structure is simple, by the way that boring cutter and milling cutter are arranged on composite knife bar, can once complete on planet carrier
The processing of step planet hole and chamfering, dimensional accuracy is high, and the geometric tolerances such as concentricity, circularity are good, meanwhile, by boring cutter and again
It closes and adds telescopic device between knife bar, keep the boring diameter of boring cutter adjustable, can be improved the machining accuracy in planet hole.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of small hole machined composite boring cutters,
It is characterized by comprising knife handle, composite knife bar and the boring cutter and milling cutter being arranged on composite knife bar, it is provided on the knife handle
For composite knife bar installation knife bar mounting hole, the composite knife bar be it is ladder-like, the composite knife bar includes that diameter is sequentially increased
The first rod segment, the second rod segment, third rod segment and the 4th rod segment, the boring cutter is mounted in the first rod segment, first rod segment
On offer boring cutter mounting hole for boring cutter installation, be provided in the boring cutter mounting hole for boring cutter along the first rod segment it is radial into
The flexible telescopic device of row, the boring cutter are mounted in boring cutter mounting hole by the telescopic device, and the blade of the boring cutter is stretched
Out to the outside of boring cutter mounting hole, two blade milling cutters are symmetrically arranged in second rod segment, the 4th rod segment is mounted on described
In knife bar mounting hole.
Above-mentioned a kind of small hole machined composite boring cutters, it is characterised in that: between the 4th rod segment and knife bar mounting hole are
Gap cooperation.
Above-mentioned a kind of small hole machined composite boring cutters, it is characterised in that: pass through pressure between the knife handle and the 4th rod segment
Tight screw is locked.
Above-mentioned a kind of small hole machined composite boring cutters, it is characterised in that: the boring diameter of the boring cutter is φ 34.5mm
~φ 35.5mm.
Above-mentioned a kind of small hole machined composite boring cutters, it is characterised in that: the milling cutter is 30 ° of milling cutters.
A kind of above-mentioned small hole machined composite boring cutters, it is characterised in that: between first rod segment and the second rod segment, with
And second be provided with excessive chamfering between rod segment and third rod segment.
A kind of above-mentioned small hole machined composite boring cutters, it is characterised in that: cooling duct is offered on the composite knife bar,
The cooling duct include along composite knife bar the main cooling duct being axially arranged and be respectively connected to the main cooling duct
Milling cutter cooling duct and boring cutter cooling duct.
Compared with the prior art, the utility model has the following advantages:
1, the utility model structure is simple, and manufacturing cost is low, dramatically reduces the planet carrier machine-building cost of charp tool.
2, the utility model makes the boring diameter of boring cutter can by adding telescopic device between boring cutter and composite knife bar
It adjusts, can fully ensure that the machining accuracy in planet hole.
3, the utility model can once complete planet carrier and appear on the stage by the way that boring cutter and two blade milling cutters are arranged on composite knife bar
The processing of rank planet hole and chamfering, two blade milling cutters play the role of Auxiliary support to knife bar in process, improve arbor stiffness,
It is high to process planet pore size precision, the geometric tolerances such as concentricity, circularity are good.
In conclusion the utility model structure is simple, it, can be primary complete by the way that boring cutter and milling cutter are arranged on composite knife bar
At the processing of planet carrier top bar planet hole and chamfering, dimensional accuracy is high, and the geometric tolerances such as concentricity, circularity are good, meanwhile, pass through
Telescopic device is added between boring cutter and composite knife bar, keeps the boring diameter of boring cutter adjustable, can be improved the processing essence in planet hole
Degree.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the utility model composite knife bar.
Fig. 3 is the structural schematic diagram of the utility model knife handle.
Description of symbols:
1-knife handle；1-1-knife bar mounting hole；1-2-screw mounting hole；
1-3-through-hole；2-composite knife bars；The first rod segment of 2-1-；
The second rod segment of 2-2-；2-3-third rod segment；The 4th rod segment of 2-4-；
3-boring cutters；4-milling cutters；The main cooling duct 5-1-；
5-2-milling cutter cooling duct；5-3-boring cutter cooling duct；6-telescopic devices.
Specific embodiment
As depicted in figs. 1 and 2, the utility model includes knife handle 1, composite knife bar 2 and the boring being arranged on composite knife bar 2
Knife 3 and milling cutter 4, the knife bar mounting hole 1-1 installed for composite knife bar 2 is provided on the knife handle 1, and the composite knife bar 2 is rank
Scalariform, the composite knife bar 2 include the first rod segment 2-1, the second rod segment 2-2, third rod segment 2-3 and the 4th that diameter is sequentially increased
Rod segment 2-4, the boring cutter 3 are mounted on the first rod segment 2-1, and the boring cutter installed for boring cutter 3 is offered on the first rod segment 2-1
Mounting hole is provided in the boring cutter mounting hole and carries out flexible telescopic device 6, institute along the radial direction of the first rod segment 2-1 for boring cutter 3
It states boring cutter 3 to be mounted in boring cutter mounting hole by the telescopic device 6, the blade of the boring cutter 3 extend out to boring cutter mounting hole
Outside, two blade milling cutters 4 are symmetrically arranged on the second rod segment 2-2, and the 4th rod segment 2-4 is mounted on the knife bar installation
In the 1-1 of hole.
As shown in figure 3, in actual use, the knife handle 1 is preferably HSK knife handle, the diameter of the 4th rod segment 2-4 is
φ 40mm can form clearance fit with the knife bar mounting hole 1-1 in the HSK knife handle, increase knife handle 1 and composite knife bar 2
Bonding strength avoids knife bar 2 from trembleing.The diameter of the third rod segment 2-3 is preferably φ 38mm, can pass through milling cutter 4
The planet hole of φ 38mm is completed, and is disposed between the second rod segment 2-2 and the 4th rod segment 2-4, increase composite cutter is reached
The purpose of the stiffness and strength of bar 2.
Particularly, by setting ladder-like for composite knife bar 2, the structure of planet carrier can be preferably adapted to, improves row
The surface quality in carrier inner planet hole improves the dimensional accuracy in planet hole.
It should be noted that the telescopic device 6 is gear & rack structure, by stretching described in the setting in boring cutter mounting hole
Compression apparatus 6 can be realized the adjustable of boring cutter 3, convenient for control machining accuracy, keep processing hole with uniformity.
Especially, it should be noted that can once complete to go by the way that boring cutter 3 and two blade milling cutters 4 are arranged on composite knife bar 2
The processing of carrier top bar planet hole and 30 ° of chamferings, dimensional accuracy is high, and the geometric tolerances such as concentricity, circularity are good.
In the present embodiment, the 4th rod segment 2-4 and knife bar mounting hole 1-1 are clearance fit.
In the present embodiment, it is locked between the knife handle 1 and the 4th rod segment 2-4 by housing screw.
In actual use, the length of the 4th rod segment 2-4 is 72mm and its whole stretches to inside knife handle 1, the knife
It is locked between handle 1 and the 4th rod segment 2-4 by housing screw, while playing the role of locking, additionally it is possible to be easily installed
And disassembly.
It should be noted that opening up on the knife handle 1, there are two the screw mounting hole 1-2 for housing screw installation.
In the present embodiment, the boring diameter of the boring cutter 3 is φ 34.5mm~φ 35.5mm.
In actual use, the boring cutter 3 can be adjusted in the accuracy rating of 1mm under the action of telescopic device 6
Section realizes the right boring in planet hole, is convenient for precision controlling.
In the present embodiment, the milling cutter 4 is 30 ° of milling cutters and its milling diameter is φ 38mm.
In actual use, by using the composite boring cutters can disposably machining small diameter be φ 35mm and large aperture is φ
The step planet hole of 38mm.
In the present embodiment, between the first rod segment 2-1 and the second rod segment 2-2 and the second rod segment 2-2 and third bar
Excessive chamfering is provided between section 2-3.
In actual use, due to the composite knife bar 2 be it is ladder-like, by the first rod segment 2-1 and the second rod segment 2-2 it
Between and the second rod segment 2-2 and third rod segment 2-3 between be provided with chamfering, can reduce its junction stress concentrate, into
And increase the structural strength of the operation instruction of the composite knife bar 2.
In the present embodiment, cooling duct is offered on the composite knife bar 2, the cooling duct includes along composite knife bar 2
The main cooling duct 5-1 being axially arranged and respectively with the main cooling duct 5-1 milling cutter cooling duct 5-2 being connected to and
Boring cutter cooling duct 5-3.
In actual use, the through-hole 1-3, the through-hole 1-3 that hole coolant liquid passes through are offered along its axial direction on the knife handle 1
It is connected to knife bar mounting hole 1-1.
It should be noted that the main cooling duct 5-1 is located at the axle center of composite knife bar 2, and main cooling duct 5-1 is from
The middle part of one rod segment 2-1 starts to penetrate through the second rod segment 2-2, third rod segment 2-3 and the 4th rod segment 2-4 one by one.
Particularly, the boring cutter cooling duct 5-3 is connected to the left end of main cooling duct 5-1, and it is to where boring cutter 3
Direction gradually tilts, and coolant liquid can be made to be directly injected on boring cutter 3, and the quantity of the milling cutter cooling duct 5-2 is two, and two
A milling cutter cooling duct 5-2 is symmetrically laid in the two sides of main cooling duct 5-1, the side of the milling cutter cooling duct 5-2
It is connected to the main cooling duct 5-1 being located on third rod segment 2-3, and it is gradually tilted to 4 direction of milling cutter, can be made cold
But liquid is directly injected on milling cutter 3.
It should be noted that by the way that main cooling duct 5-1, milling cutter cooling duct 5-2 and boring cutter are arranged on composite knife bar 2
Cooling duct 5-3 can cool down boring cutter 3 and milling cutter 4, avoid boring cutter 3 and milling cutter 4 in the process of planet carrier
Overheat damages, and guarantees machining accuracy.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (7)
1. a kind of small hole machined composite boring cutters, it is characterised in that: including knife handle (1), composite knife bar (2) and be arranged compound
Boring cutter (3) and milling cutter (4) on knife bar (2) are provided with the knife bar mounting hole for composite knife bar (2) installation on the knife handle (1)
(1-1), the composite knife bar (2) be it is ladder-like, the composite knife bar (2) include diameter be sequentially increased the first rod segment (2-1),
Second rod segment (2-2), third rod segment (2-3) and the 4th rod segment (2-4), the boring cutter (3) are mounted on the first rod segment (2-1),
The boring cutter mounting hole for boring cutter (3) installation is offered on first rod segment (2-1), is provided in the boring cutter mounting hole for boring
Knife (3) carries out flexible telescopic device (6) along the radial direction of the first rod segment (2-1), and the boring cutter (3) passes through the telescopic device
(6) it is mounted in boring cutter mounting hole, the blade of the boring cutter (3) extend out to the outside of boring cutter mounting hole, the second rod segment (2-
2) it is symmetrically arranged on two blade milling cutters (4), the 4th rod segment (2-4) is mounted in the knife bar mounting hole (1-1).
2. a kind of small hole machined composite boring cutters described in accordance with the claim 1, it is characterised in that: the 4th rod segment (2-4)
It is clearance fit with knife bar mounting hole (1-1).
3. a kind of small hole machined composite boring cutters described in accordance with the claim 1, it is characterised in that: the knife handle (1) and the 4th
It is locked between rod segment (2-4) by housing screw.
4. a kind of small hole machined composite boring cutters according to claim 1 or 2, it is characterised in that: the boring of the boring cutter (3)
Cutting diameter is φ 34.5mm~φ 35.5mm.
5. a kind of small hole machined composite boring cutters according to claim 1 or 2, it is characterised in that: the milling cutter (4) is
30 ° of milling cutters.
6. a kind of small hole machined composite boring cutters according to claim 1 or 2, it is characterised in that: the first rod segment (2-
1) excessive chamfering is provided between the second rod segment (2-2) and between the second rod segment (2-2) and third rod segment (2-3).
7. a kind of small hole machined composite boring cutters according to claim 1 or 2, it is characterised in that: the composite knife bar (2)
On offer cooling duct, the cooling duct include along composite knife bar (2) the main cooling duct (5-1) being axially arranged, with
And the milling cutter cooling duct (5-2) being connected to respectively with the main cooling duct (5-1) and boring cutter cooling duct (5-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821822859.0U CN208991780U (en) | 2018-11-06 | 2018-11-06 | A kind of small hole machined composite boring cutters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821822859.0U CN208991780U (en) | 2018-11-06 | 2018-11-06 | A kind of small hole machined composite boring cutters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208991780U true CN208991780U (en) | 2019-06-18 |
Family
ID=66806451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821822859.0U Active CN208991780U (en) | 2018-11-06 | 2018-11-06 | A kind of small hole machined composite boring cutters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208991780U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589140A (en) * | 2020-12-03 | 2021-04-02 | 四川航天长征装备制造有限公司 | Special multi-step deep hole profile boring cutter and boring method |
| CN118682157A (en) * | 2024-08-26 | 2024-09-24 | 常州宇辰复合材料科技有限公司 | Variable diameter boring cutter handle |
-
2018
- 2018-11-06 CN CN201821822859.0U patent/CN208991780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589140A (en) * | 2020-12-03 | 2021-04-02 | 四川航天长征装备制造有限公司 | Special multi-step deep hole profile boring cutter and boring method |
| CN118682157A (en) * | 2024-08-26 | 2024-09-24 | 常州宇辰复合材料科技有限公司 | Variable diameter boring cutter handle |
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