CN202910307U - Gun-drill mechanical main shaft - Google Patents
Gun-drill mechanical main shaft Download PDFInfo
- Publication number
- CN202910307U CN202910307U CN 201220563705 CN201220563705U CN202910307U CN 202910307 U CN202910307 U CN 202910307U CN 201220563705 CN201220563705 CN 201220563705 CN 201220563705 U CN201220563705 U CN 201220563705U CN 202910307 U CN202910307 U CN 202910307U
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- CN
- China
- Prior art keywords
- main shaft
- drilling tool
- center
- gun
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Drilling And Boring (AREA)
- Drilling Tools (AREA)
Abstract
The utility relates to a gun-drill mechanical main shaft which comprises a shell body, a main shaft, a front bearing group, a rear bearing group, a sealing structure, a front cover, a rear cover and the like, wherein a front end inner cavity of the main shaft and a drilling tool are of cone surface coordinate structures and connected through threads. A cooling liquid channel is formed in the center of the main shaft. The gun-drill mechanical main shaft is characterized by closely fitting the drilling tool after the drilling toll is installed. With the main shaft rotating, the higher the rotating speed the tighter the fit is. The problem that procession is not accurate, due to the fact that the drilling tool is loosened after long time use is effectively solved. An axial through hole is formed in the center of the gun-drill main shaft and serves as the cooling liquid channel, so that the center of the drilling tool can be cooled directly, and cooling effect is good.
Description
Technical field:
The utility model relates to main shaft improvement technology in the field of machining, particularly relates to a kind of drill gun mechanical main shaft.
Background technology:
The front end of traditional drill gun main shaft is by the drillstock of installing hole suit drilling tool, then adopt radial bolts to fix, there is fit clearance in this mounting means, is using post gap to enlarge for a long time and is becoming flexible, have certain amplitude of fluctuation in the High Rotation Speed process, cause machining accuracy inadequate.In addition, existing drill gun Spindle's cooling mode is not quite reasonable, and its type of cooling is directly cooling fluid to be introduced bit location, can only be to drill bit periphery Local cooling, and cooling effect is bad, has affected to a certain extent the service life of drilling tool.
The utility model content:
The utility model is for the defective that exists in the prior art and deficiency, and a kind of drill gun mechanical main shaft is provided.
Technical scheme: a kind of drill gun mechanical main shaft, comprise housing, main shaft, forward and backward bearing group and hermetically-sealed construction, front/rear cover, the front end inner chamber of main shaft are pre-large post-small frustum cavity body structure, the lateral surface of drilling tool is the frustum structure of mating with this frustum cavity, the rear end inner chamber of described frustum cavity arranges one section internal thread segment, and the rear end of drilling tool is provided with an end external thread section, this external thread section and described internal thread segment Matching installation.
The center of main shaft is provided with axially extending bore, and the center of drilling tool is provided with axially extending bore, and two axial through holes are corresponding, and the rear end of main shaft is provided with swivel joint, and this swivel joint is communicated with the cooling fluid pipeline.
Contact-making surface arranges the convex-concave mating surface between main described protecgulum and the main shaft, and the inboard of convex-concave mating surface is provided with annular chamber, is provided with the radial air inlet pipeline that is communicated with annular chamber one side at protecgulum, and the annular chamber opposite side arranges radially outlet pipe.
The beneficial effects of the utility model:
1, the utility model drill gun mechanical main shaft is transformed main shaft and drilling tool connecting portion, the mounting structure that has adopted frustum cavity and frustum to cooperate, have friction tight characteristics after the installation, and along with main shaft rotates, the higher cooperation of rotating speed is tightr, occurs loosening after preventing effectively that drilling tool is long-time and using and processes coarse problem and occur.
2, the utility model is provided with axial through hole as cooling passage at the drill gun alignment of shafts, can be directly to the cooling of drilling tool center, good cooling results.
Description of drawings:
Fig. 1 is the cross-sectional view of the utility model drill gun mechanical main shaft.
The specific embodiment:
Embodiment 1: referring to Fig. 1, among the figure, numbering 1 is main shaft, and 2 is protecgulum, and 3 is front sealing ring, 4 is front interior dottle pin, and 5 is front outer dottle pin, and 6 is front nut, and 7 is housing, and 8 is rear pad, 9 is rear interior dottle pin, and 10 is rear outer dottle pin, and 11 is bonnet, and 12 is back nut, and 13 is rear locking nut.A kind of drill gun mechanical main shaft comprises housing 7, main shaft 1, forward and backward bearing group and hermetically-sealed construction, protecgulum 2 and bonnet 11 etc.Wherein, the front end inner chamber of main shaft 1 is pre-large post-small frustum cavity body structure, the lateral surface of drilling tool is the frustum structure of mating with this frustum cavity, the rear end inner chamber of described frustum cavity arranges one section internal thread segment, the rear end of drilling tool is provided with an end external thread section, this external thread section and described internal thread segment Matching installation.
The center of main shaft 1 is provided with axially extending bore, and the center of drilling tool is provided with axially extending bore, the corresponding cooling passage that forms of two axial through holes, and the rear end of main shaft is provided with swivel joint, and this swivel joint is communicated with the cooling fluid pipeline.
Contact-making surface arranges the convex-concave mating surface between described protecgulum 2 and the main shaft 1, and the inboard of convex-concave mating surface is provided with annular chamber, is provided with the radial air inlet pipeline that is communicated with annular chamber one side at protecgulum, and the annular chamber opposite side arranges radially outlet pipe.
Claims (3)
1. drill gun mechanical main shaft, comprise housing, main shaft, forward and backward bearing group and hermetically-sealed construction, front/rear cover is characterized in that: the front end inner chamber of main shaft is pre-large post-small frustum cavity body structure, the lateral surface of drilling tool is the frustum structure of mating with this frustum cavity, the rear end inner chamber of described frustum cavity arranges one section internal thread segment, and the rear end of drilling tool is provided with an end external thread section, this external thread section and described internal thread segment Matching installation.
2. drill gun mechanical main shaft according to claim 1, it is characterized in that: the center of main shaft is provided with axially extending bore, and the center of drilling tool is provided with axially extending bore, and two axial through holes are corresponding, the rear end of main shaft is provided with swivel joint, and this swivel joint is communicated with the cooling fluid pipeline.
3. drill gun mechanical main shaft according to claim 1, it is characterized in that: contact-making surface arranges the convex-concave mating surface between described protecgulum and the main shaft, the inboard of convex-concave mating surface is provided with annular chamber, be provided with the radial air inlet pipeline that is communicated with annular chamber one side at protecgulum, the annular chamber opposite side arranges radially outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220563705 CN202910307U (en) | 2012-10-31 | 2012-10-31 | Gun-drill mechanical main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220563705 CN202910307U (en) | 2012-10-31 | 2012-10-31 | Gun-drill mechanical main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202910307U true CN202910307U (en) | 2013-05-01 |
Family
ID=48158653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220563705 Expired - Fee Related CN202910307U (en) | 2012-10-31 | 2012-10-31 | Gun-drill mechanical main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202910307U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381474A (en) * | 2018-05-18 | 2018-08-10 | 泰州润元户外用品股份有限公司 | Bore the electronic drill gun converter of ice |
| CN108580980A (en) * | 2018-07-05 | 2018-09-28 | 丰元智能科技（东莞）有限公司 | A kind of drill bit guide sleeve device of essence drilling machine |
-
2012
- 2012-10-31 CN CN 201220563705 patent/CN202910307U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381474A (en) * | 2018-05-18 | 2018-08-10 | 泰州润元户外用品股份有限公司 | Bore the electronic drill gun converter of ice |
| CN108381474B (en) * | 2018-05-18 | 2024-01-19 | 泰州润元户外用品股份有限公司 | Electric gun drill converter for drilling ice |
| CN108580980A (en) * | 2018-07-05 | 2018-09-28 | 丰元智能科技（东莞）有限公司 | A kind of drill bit guide sleeve device of essence drilling machine |
| CN108580980B (en) * | 2018-07-05 | 2024-02-09 | 丰元智能科技（东莞）有限公司 | Drill guide sleeve device of fine drilling machine |
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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: 20130501 Termination date: 20131031 |