CN203171028U - Inner-cooled stepped drill with good cooling effect - Google Patents
Inner-cooled stepped drill with good cooling effect Download PDFInfo
- Publication number
- CN203171028U CN203171028U CN 201320199995 CN201320199995U CN203171028U CN 203171028 U CN203171028 U CN 203171028U CN 201320199995 CN201320199995 CN 201320199995 CN 201320199995 U CN201320199995 U CN 201320199995U CN 203171028 U CN203171028 U CN 203171028U
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- drill
- blade
- cooling water
- cooled
- blade portion
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Abstract
The utility model aims at providing an inner-cooled stepped drill with the good cooling effect. The inner-cooled drill comprises a drill handle and a blade portion which is installed on the end portion of the drill handle, wherein a plurality of sections of drilling blades of which diameters are increased gradually are sequentially arranged from the end portion of the blade portion to the connecting position of the blade portion and the drill handle, a water incoming channel is arranged on the drill handle in a penetrating mode, and a cooling water outlet which is communicated with the water incoming channel is arranged on the end portion of the blade portion. The inner-cooled drill is characterized in that auxiliary cooling water outlets which are communicated with the water incoming channel are arranged at connecting positions of every two adjacent sections of drilling blades, and the auxiliary cooling water outlets face towards the end portion of the blade portion. According to the inner-cooled stepped drill, the cooling water outlet and the auxiliary cooling water outlets are arranged at reasonable positions, so that cooling water can flow out of the cooling water outlet smoothly all the time, the end portion of the blade portion is cooled continuously, the cooling effect is guaranteed, and the service life of a drill bit is prolonged.
Description
Technical field
The utility model belongs to the bit technique field, specially refers to a kind of interior cold step drill of good cooling results.
Background technology
Though traditional interior cold step drill is provided with the intake tunnel that runs through drillstock, and is provided with delivery port in the end of blade, thereby cooling water is entered from intake tunnel, flow out from delivery port, for cooling off at the position of boring.But because the blade front end place of step drill is often hidden by the chip that boring is produced, cooling water is difficult in time this place be cooled off, and has influenced the effect of step drill cooling and boring.
The utility model content
The purpose of this utility model is the interior cold step drill that proposes a kind of good cooling results.
The interior cold brill of good cooling results of the present utility model comprises drillstock and is installed in the blade of drillstock end, the end of described blade to the joint of blade and drillstock is disposed with the some sections boring swords that diameter increases gradually, described drillstock runs through and is provided with into aquaporin, and the end of described blade is provided with and goes into the coolant outlet that aquaporin communicates; Key is that the joint of described adjacent two sections boring swords is provided with described and goes into the auxiliary coolant outlet that aquaporin communicates that described auxiliary coolant outlet is towards the end of blade.
In boring procedure, one road cooling water cools off the place, end that water out drains into blade certainly, cool off end to blade, and another road cooling water sprays to the end of blade from auxiliary coolant outlet, can wash away near the chip that accumulates in the blade end, thereby avoid accumulation of debris near the blade end and coolant outlet is stopped up, cooling water all the time can be swimmingly from cooling off the water out outflow like this, constantly drill bit is implemented cooling, guaranteed cooling effect.Because the blade end is the maximum zone of drill bit heating, therefore this place is implemented effectively cooling, can guarantee the cooling effect of whole drill bit.
Further, the joint chamfered transition of described adjacent two sections boring swords can be avoided causing the bigger boring sword of diameter and the active force between the hole wall to increase suddenly because of the diameter sudden change of adjacent two sections boring swords like this, makes hole wall produce too much burr.
The interior cold step drill of good cooling results of the present utility model is by arranging the rational coolant outlet in position and auxiliary coolant outlet, can guarantee that cooling water can flow out from cooling off water out all the time swimmingly, constantly cooling is implemented in the blade end, guarantee cooling effect, prolonged the service life of drill bit.
Description of drawings
Fig. 1 is the structural representation of interior cold step drill of the present utility model.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are described in further detail.
Embodiment 1:
As shown in Figure 1, the interior cold step drill of the good cooling results of present embodiment comprises drillstock 1 and is installed in the blade 2 of drillstock 1 end, the end of described blade 2 to the joint of blade 2 and drillstock 1 is disposed with two sections boring swords 3 that diameter increases gradually, described drillstock 1 runs through and is provided with into aquaporin 4, and the end of described blade 2 is provided with and goes into the coolant outlet 5 that aquaporin 4 communicates; Key is that the joint of described adjacent two sections boring swords 3 is provided with described and goes into the auxiliary coolant outlet 6 that aquaporin 4 communicates that described auxiliary coolant outlet 6 is towards the end of blade 2.
In boring procedure, one road cooling water cools off the place, end that water out 5 drains into blade 2 certainly, cool off end to blade, and another road cooling water sprays to the end of blade 2 from auxiliary coolant outlet 6, can wash away near the chip that accumulates in blade 2 ends, thereby avoid accumulation of debris near blade 2 ends and coolant outlet 5 is stopped up, cooling water all the time can be swimmingly from cooling off water out 5 outflows like this, constantly drill bit is implemented cooling, guaranteed cooling effect.Because blade 2 ends are the maximum zones of drill bit heating, therefore this place are implemented effectively cooling, can guarantee the cooling effect of whole drill bit.
The joint chamfered transition of adjacent two sections boring swords 3 can be avoided causing the bigger boring sword 3 of diameter and the active force between the hole wall to increase suddenly because of the diameter sudden change of adjacent two sections boring swords 3 like this, makes hole wall produce too much burr.
Claims (2)
1. the interior cold step drill of a good cooling results, comprise drillstock and the blade that is installed in the drillstock end, the end of described blade to the joint of blade and drillstock is disposed with the some sections boring swords that diameter increases gradually, described drillstock runs through and is provided with into aquaporin, and the end of described blade is provided with and goes into the coolant outlet that aquaporin communicates; The joint that it is characterized in that described adjacent two sections boring swords is provided with described goes into the auxiliary coolant outlet that aquaporin communicates, and described auxiliary coolant outlet is towards the end of blade.
2. the interior cold step drill of good cooling results according to claim 1 is characterized in that the joint chamfered transition of described adjacent two sections boring swords.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199995 CN203171028U (en) | 2013-04-19 | 2013-04-19 | Inner-cooled stepped drill with good cooling effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199995 CN203171028U (en) | 2013-04-19 | 2013-04-19 | Inner-cooled stepped drill with good cooling effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203171028U true CN203171028U (en) | 2013-09-04 |
Family
ID=49067782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320199995 Expired - Fee Related CN203171028U (en) | 2013-04-19 | 2013-04-19 | Inner-cooled stepped drill with good cooling effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203171028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128642A (en) * | 2013-05-03 | 2014-11-05 | 苏州文鼎模具有限公司 | Inner-cooling step drill with good cooling effect |
-
2013
- 2013-04-19 CN CN 201320199995 patent/CN203171028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128642A (en) * | 2013-05-03 | 2014-11-05 | 苏州文鼎模具有限公司 | Inner-cooling step drill with good cooling effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140419 |