CN209830372U - High positioning accuracy hole digger - Google Patents
High positioning accuracy hole digger Download PDFInfo
- Publication number
- CN209830372U CN209830372U CN201920729750.0U CN201920729750U CN209830372U CN 209830372 U CN209830372 U CN 209830372U CN 201920729750 U CN201920729750 U CN 201920729750U CN 209830372 U CN209830372 U CN 209830372U
- Authority
- CN
- China
- Prior art keywords
- gear
- sun gear
- gear ring
- transmission shaft
- planetary gear
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000003754 machining Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Drilling And Boring (AREA)
Abstract
The utility model discloses a perforator with high positioning precision, which comprises a transmission shaft, a sun gear, a planetary gear and a gear ring; the bottom of the sun gear is provided with a left-handed drill bit through a drill chuck, the sun gear is fixedly connected with the transmission shaft, and the sun gear moves synchronously with the transmission shaft; the planetary gear is externally meshed with the sun gear and is fixed through the planet carrier; the gear ring is in internal meshing with the planetary gear, a serrated knife is arranged at the bottom of the gear ring, a gear ring frame is arranged at the upper part of the gear ring, and the gear ring frame is rotationally connected with the planet carrier through a bearing; the bottom of the planetary gear is provided with a right-handed drill bit through a drill chuck. The hole digger adopt planetary gear train to constitute, replaced the mode that ordinary hole digger adopted the screw mode to connect the drill bit, location and machining precision are greatly improved.
Description
Technical Field
The utility model relates to a high positioning accuracy's hole digger belongs to the machine-building processing field.
Background
A drill bit and a hole opener are generally selected during traditional hole machining, the drill bit has certain limitation when a large-diameter hole is machined, the machining diameter is limited, the hole opener is produced on the basis, accessories of the hole opener mainly comprise a support handle, a spring, a drill bit and the like, the support handle belongs to a universal part, the hole openers with different hole diameters are provided with support handles with different specifications, for example, the hole diameter range of 14-32mm belongs to one specification, and the hole diameter larger than 32mm belongs to another specification.
When the existing hole digger is used, the condition of unstable processing exists, the vibration amplitude of the dense teeth is large, the drill bit is broken, and the processing position and the size precision of a hole are influenced.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a hole digger of high positioning accuracy is stable to the location of round hole, and the machining precision is high.
In order to achieve the above object, the utility model discloses a hole digger with high positioning accuracy, which comprises a transmission shaft, a sun gear, a planetary gear and a gear ring; the bottom of the sun gear is provided with a left-handed drill bit through a drill chuck, the sun gear is fixedly connected with the transmission shaft, and the sun gear moves synchronously with the transmission shaft; the planetary gear is externally meshed with the sun gear and is fixed through the planet carrier; the gear ring is in internal meshing with the planetary gear, a serrated knife is arranged at the bottom of the gear ring, a gear ring frame is arranged at the upper part of the gear ring, and the gear ring frame is rotationally connected with the planet carrier through a bearing; the bottom of the planetary gear is provided with a right-handed drill bit through a drill chuck.
Preferably, the transmission shaft and the sun gear are fixed by bolts.
Preferably, the planet gears are three, and the included angle between two adjacent planet gears is 120 degrees.
Preferably, the sun gear adopts a gear with a module of 2.5 and a tooth number of 30; the planet gear adopts a gear with a module of 2.5 and a tooth number of 20; the gear ring adopts a gear with the modulus of 2.5 and the tooth number of 70.
Preferably, the planet carrier has a shaft at an end thereof, and the planet gear is mounted on the shaft and fastened by a nut.
Compared with the prior art, the utility model discloses a hole digger includes planetary gear, drill chuck and drill bit, three planetary gear can effectual location, the sun gear makes the structure more stable can not take place to draw partially in the course of working, planetary gear passes through the planet carrier fixed, restriction planetary gear is at the rotation of circumferencial direction, planetary gear adopts internal gear's form with the ring gear, drive planetary gear through the sun gear, planetary gear drives the ring gear, the cloth of ring gear below has intensive serrated knife to realize the processing to the hole. The hole digger adopt planetary gear train to constitute, replaced the mode that ordinary hole digger adopted the screw mode to connect the drill bit, location and machining precision are greatly improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
FIG. 3 is a front view of the present invention;
in the figure: 1. the drill bit comprises a gear ring, 2, a bearing, 3, a planetary gear, 4, a sun gear, 5, a planet carrier, 6, a gear ring carrier, 7, a transmission shaft, 8, a right-handed drill bit, 9, a drill chuck, 10, a left-handed drill bit, 11, gear ring internal teeth, 12 and a serrated knife.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, 2 and 3, a hole cutter with high positioning accuracy comprises a transmission shaft 7, a sun gear 4, a planetary gear 3 and a ring gear 1; the bottom of the sun gear 4 is provided with a left-handed drill bit 10 through a drill chuck 9, the sun gear 4 is fixedly connected with the transmission shaft 7, and the sun gear 4 moves synchronously with the transmission shaft 7; the planetary gear 3 is externally meshed with the sun gear 4, and the planetary gear 3 is fixed through a planetary carrier 5; the gear ring 1 is internally meshed with the planetary gear 3, the bottom of the gear ring 1 is provided with a toothed cutter 12, the upper part of the gear ring 1 is provided with a gear ring frame 6, a cylindrical part at the inner side of the gear ring frame 6 is tightly matched and fixed with the bearing 2, the inner side of the bearing 2 is fixedly connected with the rotating shaft 7, and the inner side of the bearing 2 is rotatably connected with the planet carrier 5; the bottom of the planetary gear 3 is provided with a right-handed drill bit 8 through a drill chuck 9. The left-handed drill 10 plays a centering role, the right-handed drill 8 plays a drilling role, and all the drills are matched together to play a stabilizing role.
Preferably, the transmission shaft 7 and the sun gear 4 are fixed by bolts, so that the sun gear 4 and the transmission shaft 7 move synchronously.
Preferably, the planetary gears 3 have three, the included angle between two adjacent planetary gears 3 is 120 degrees, the three planetary gears can be effectively positioned, and the sun gear enables the structure to be more stable and does not generate deviation in the machining process.
Preferably, a shaft is provided at an end of the carrier 5, the carrier 5 is connected to the planetary gear 3 through the shaft and is fixed by a nut, the movement of the planetary gear 3 in the vertical direction is limited, the planetary gear 3 can rotate around the shaft, or the planetary gear 3 can be rotatably connected by a combination of the shaft and a bearing.
When the drill bit is used, the transmission shaft 7 is driven to rotate by a pistol drill, the transmission shaft 7 drives the sun gear 4 to rotate, the sun gear is a gear with the modulus of 2.5 and the tooth number of 30, then the sun gear 4 transmits the gear to the planet gear 3, the gear ring 1 is internally provided with gear ring internal teeth 11 to be internally meshed with three regularly arranged planet gears 3, the adopted planet gear 3 is the gear with the modulus of 2.5 and the tooth number of 20, the gear ring 1 is the gear with the modulus of 2.5 and the tooth number of 70, the planet gear 3 is rotatably arranged on the planet carrier 5, when the planet carrier 5 rotates along with the sun gear 4, the planet gear 3 can rotate along the shaft, each planet gear 3 drives the drill chuck 9 to rotate, the right-handed drill bit 8 to move, the left-handed drill bit 10 at the bottom of the sun gear 4 is matched to rotate, the positioning during hole machining is realized, the dense serrated knife 12 is distributed at the lower end, thereby realizing the processing of the hole.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (5)
1. The hole digger with high positioning precision is characterized by comprising a transmission shaft (7), a sun gear (4), a planetary gear (3) and a gear ring (1);
the bottom of the sun gear (4) is provided with a left-handed drill bit (10) through a drill chuck (9), the sun gear (4) is fixedly connected with the transmission shaft (7), and the sun gear (4) synchronously moves along with the transmission shaft (7); the planetary gear (3) is externally meshed with the sun gear (4), and the planetary gear (3) is fixed through a planet carrier (5); the gear ring (1) is in inner meshing with the planetary gear (3), a serrated knife (12) is arranged at the bottom of the gear ring (1), a gear ring rack (6) is arranged at the upper part of the gear ring (1), and the gear ring rack (6) is rotationally connected with the planet carrier (5) through a bearing (2);
the bottom of the planetary gear (3) is provided with a right-handed drill bit (8) through a drill chuck (9).
2. A high positioning accuracy hole cutter according to claim 1, characterized in that the transmission shaft (7) is bolted to the sun gear (4).
3. A high positioning accuracy hole cutter according to claim 1, characterized in that said planet gears (3) are three, and the angle between two adjacent planet gears (3) is 120 °.
4. A high positioning accuracy hole cutter according to claim 1 or 3, characterized in that the sun gear (4) is a 2.5 module, 30 teeth gear; the planet gear (3) adopts a gear with a module of 2.5 and a tooth number of 20; the gear ring (1) adopts a gear with a module of 2.5 and a tooth number of 70.
5. A high positioning accuracy hole cutter according to claim 1, characterized in that the end of the planet carrier (5) is provided with a shaft, on which the planet gear (3) is mounted and fastened with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729750.0U CN209830372U (en) | 2019-05-21 | 2019-05-21 | High positioning accuracy hole digger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729750.0U CN209830372U (en) | 2019-05-21 | 2019-05-21 | High positioning accuracy hole digger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209830372U true CN209830372U (en) | 2019-12-24 |
Family
ID=68897778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920729750.0U Expired - Fee Related CN209830372U (en) | 2019-05-21 | 2019-05-21 | High positioning accuracy hole digger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209830372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052650A (en) * | 2019-05-21 | 2019-07-26 | 徐州工业职业技术学院 | A kind of hole making drill of high position precision |
-
2019
- 2019-05-21 CN CN201920729750.0U patent/CN209830372U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052650A (en) * | 2019-05-21 | 2019-07-26 | 徐州工业职业技术学院 | A kind of hole making drill of high position precision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |