CN203944889U - A kind of for processing the interior cold step drill of valve parts closed hole - Google Patents
A kind of for processing the interior cold step drill of valve parts closed hole Download PDFInfo
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- CN203944889U CN203944889U CN201420415833.XU CN201420415833U CN203944889U CN 203944889 U CN203944889 U CN 203944889U CN 201420415833 U CN201420415833 U CN 201420415833U CN 203944889 U CN203944889 U CN 203944889U
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- drill body
- drill
- interior cold
- blade
- cold step
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Abstract
A kind of for processing the interior cold step drill of valve parts closed hole, comprise drill body (10), on described drill body (10), there are multiple blades for machined part (12), it is characterized in that: described blade (12) is dismountable to be arranged on described drill body (10).The utility model use cost is lower and service life is longer.
Description
Technical field
The utility model relates to a kind of step drill, relates in particular to a kind of for processing the interior cold step drill of valve parts closed hole.
Background technology
Interior cold step drill, as an important component part in cutter for machining, is mainly used in the processing of step trough.In recent years, along with the development of machinery industry, production cycle of the crudy of user to product, process reliability, working (machining) efficiency, cutter etc. all has higher requirement.But in tradition, cold step drill also has many weak points, for example: interior cold step drill as shown in Figure 1, because the material entirety of cutter hub 2 is carbide alloy, therefore, cost is higher, simultaneously again because the position of the cooling fluid apopore setting on cutter hub 2 is not good, and negligible amounts, therefore, cannot make in use cutter hub cooling completely fast, thereby can shorten the service life of interior cold step drill.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of use cost lower and service life long for processing the interior cold step drill of valve parts closed hole.
For solving the problems of the technologies described above, the utility model provides a kind of and comprises drill body for processing the interior cold step drill of valve parts closed hole, has multiple blades for machined part on described drill body, and described blade is dismountable to be arranged on described drill body.
The corresponding installing hole that is provided with on described blade and described drill body, bolt is fixed on described blade on described drill body by described installing hole.
Described installing hole parallels with the axis of described drill body.
Evenly spacedly centered by the axis of described drill body on described blade be provided with multiple apopores, described apopore communicates with the cooling-water duct of described drill body inside.
Be provided with the cooling water cavity communicating with described cooling-water duct in the inside of described blade.
Described cooling water cavity is the annular cooling water chamber centered by the axis of described drill body.
Compared with prior art, the beneficial effects of the utility model are: because drill body of the present utility model and blade removably connect, this non-integrated design, drill body and blade can be selected different materials, be that blade selects cutting power better, and the carbide alloy that cost is higher, drill body is selected other metal material cheaply, like this in guaranteeing step drill cutting power, can effectively reduce the manufacturing cost of step drill, in addition, in the time of blade or drill body damage, only need change one of them, and another still can continue to use, therefore, the utility model use cost is lower, and service life is longer.
Brief description of the drawings
Fig. 1 is the structural representation of existing interior cold step drill.
Fig. 2 is structural representation of the present utility model.
Wherein: drill body 10, blade 12, has installing hole 14, bolt 16, apopore 18, cooling-water duct 20, cooling water cavity 22.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and embodiments, the utility model is described in further details.At this, exemplary embodiment of the present utility model and explanation are used for explaining the utility model, but not as to restriction of the present utility model.
Shown in Figure 2, a kind of for processing the interior cold step drill of valve parts closed hole, comprise drill body 10, on drill body 10, there are multiple blades 12 for machined part, the plurality of blade 12 is ladder and distributes on drill body 10, shape can be the step drill of existing any form, special feature of the present utility model is: drill body 10 is not one-body molded with blade 12, but separately after moulding, be fixedly mounted on drill body 10 dismountable blade 12, this kind of detachable installation preferably by the threaded installing hole 14 of processing tool corresponding on blade 12 and drill body 10, then, blade 12 is fixed on drill body 10 with the bolt 16 matching with installing hole 14, certainly can select too other fixed form well known by persons skilled in the art, such as the mode of welding, above-mentioned drill body 10 is from the benefit that blade 12 separates moulding: drill body 10 and blade 12 can be selected different materials, be that blade 12 is selected the good carbide alloy of cutting power, drill body is selected other metal material, like this in not reducing step drill cutting power, reduce the manufacturing cost of step drill, in addition, in the time that damaging, blade 12 or drill body 10 only need change one of them, and another still can continue to use.
For making blade 12 stablize firm being fixed on drill body 10, installing hole 14 is paralleled with the axis of drill body 10, and rounded distribution centered by the axis of drill body 10.
Owing to can produce a large amount of heats in working angles, can express delivery lower the temperature for making step drill, evenly spacedly centered by the axis of drill body 10 on blade 12 be provided with multiple apopores 18, this apopore 18 communicates with the cooling-water duct 20 of drill body 10 inside, and in order further to improve cooling capacity, be provided with the cooling water cavity 22 communicating with cooling-water duct 20 in the inside of blade 12, this cooling water cavity 22 is the annular cooling water chamber centered by the axis of drill body 10, thereby can increase heat exchange area like this and reach the object of fast cooling, finally guarantee that step drill has longer service life.
Claims (6)
1. one kind for processing the interior cold step drill of valve parts closed hole, comprise drill body (10), on described drill body (10), there are multiple blades for machined part (12), it is characterized in that: described blade (12) is dismountable to be arranged on described drill body (10).
2. interior cold step drill according to claim 1, it is characterized in that: what described blade (12) and described drill body (10) were upper corresponding is provided with installing hole (14), and bolt (16) is fixed on described blade (12) on described drill body (10) by described installing hole (14).
3. interior cold step drill according to claim 2, is characterized in that: described installing hole (14) parallels with the axis of described drill body (10).
4. interior cold step drill according to claim 1, it is characterized in that: at the above evenly spaced multiple apopores (18) that are provided with centered by the axis of described drill body (10) of described blade (12), described apopore (18) cooling-water duct (20) inner with described drill body (10) communicates.
5. interior cold step drill according to claim 4, is characterized in that: be provided with the cooling water cavity (22) communicating with described cooling-water duct (20) in the inside of described blade (12).
6. interior cold step drill according to claim 5, is characterized in that: described cooling water cavity (22) is the annular cooling water chamber centered by the axis of described drill body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420415833.XU CN203944889U (en) | 2014-07-25 | 2014-07-25 | A kind of for processing the interior cold step drill of valve parts closed hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420415833.XU CN203944889U (en) | 2014-07-25 | 2014-07-25 | A kind of for processing the interior cold step drill of valve parts closed hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203944889U true CN203944889U (en) | 2014-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420415833.XU Active CN203944889U (en) | 2014-07-25 | 2014-07-25 | A kind of for processing the interior cold step drill of valve parts closed hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203944889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889459A (en) * | 2015-05-29 | 2015-09-09 | 苏州亚思科精密数控有限公司 | Cutter |
-
2014
- 2014-07-25 CN CN201420415833.XU patent/CN203944889U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889459A (en) * | 2015-05-29 | 2015-09-09 | 苏州亚思科精密数控有限公司 | Cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |