CN203804288U - Quickly changed drill bit - Google Patents
Quickly changed drill bit Download PDFInfo
- Publication number
- CN203804288U CN203804288U CN201420262454.1U CN201420262454U CN203804288U CN 203804288 U CN203804288 U CN 203804288U CN 201420262454 U CN201420262454 U CN 201420262454U CN 203804288 U CN203804288 U CN 203804288U
- Authority
- CN
- China
- Prior art keywords
- drillstock
- annular groove
- groove
- star
- drill bit
- 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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Abstract
The utility model discloses a quickly changed drill bit. The drill bit can be quickly changed, and has a reliable axial limiting function and a reliable peripheral limiting function. The quickly changed drill bit comprises a drillstock (1), a drill stem (2) and a tool bit (3), wherein two annular grooves are formed in the drillstock (1); the second annular groove (4.2) is positioned in the middle of the drillstock (1); the first annular groove (4.1) is positioned in the left of the drillstock (1); the depth of the first annular groove (4.1) is equal to that of the second annular groove (4.2); the surface of the first annular groove (4.1) and the surface of the second annular groove (4.2) are rough surfaces; two axial V-shaped grooves (5) are respectively formed in the left half portion of the drillstock (1) and a portion, which is positioned between the first annular groove (4.1) and the second annular groove (4.2), of the drillstock (1); the pointing direction of tips of the V-shaped grooves (5) is the radial direction; the drillstock (1) is a regular polyhedron; and the two V-shaped grooves (5) are respectively positioned in the middles of two axisymmetric surfaces of the regular polyhedron.
Description
Technical field
The utility model relates to bit technique field, is specifically a kind of Quick replaceable drill bit.
Background technology
Current Quick replaceable drill bit comprises drillstock, drilling rod, cutter head, and drillstock is provided with annular groove, although said structure can also provide certain axial limiting and circumferentially spacing when realizing quick change, axial limiting and circumferentially spacing be not still very reliable; Because this body structure of Quick replaceable drill bit is comparatively simple, cannot carry out large change, so research and develop a kind of structure cleverly, improve above-mentioned defect and become one of difficult point in industry.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of reliable axial limiting and circumferential spacing Quick replaceable drill bit can be also provided when realizing quick change.
The technical solution of the utility model is, the utility model Quick replaceable drill bit, it comprises drillstock, drilling rod, cutter head, and drillstock is provided with annular groove, and annular groove divides two, be respectively the first ring connected in star and the second annular groove that along drillstock, axially sequentially distribute from left to right, the second annular groove is positioned at drillstock middle part, and first ring connected in star is positioned at drillstock left part, and the groove depth of the groove depth of first ring connected in star and the second annular groove equates, the span of groove depth is closed interval [1.0 millimeters, 3.0 millimeters]; Described first ring connected in star and the second annular groove surface are crude, and the microstructure of crude is pawl, being oriented tiltedly towards cutter head of pawl; The part between first ring connected in star and the second annular groove of the right half part of drillstock and drillstock is equipped with axial V-shaped groove, this V-shaped groove arranges in pairs, and axial symmetry, V-shaped groove tip is oriented to radially, drillstock is regular polygon, each arrange in pairs in these two V-shaped grooves lay respectively at the middle part on two axisymmetric of described regular polygon.
Adopt after said structure, the utility model compared with prior art, have the following advantages: after drillstock is connected with drill chuck, two place elastic clampings parts of drill chuck respectively with first ring connected in star and the second annular groove close contact, because groove surfaces is crude, and microstructure is pawl, being oriented tiltedly towards cutter head of pawl, therefore frictional force is large, resistance to plucking is good simultaneously, thereby strengthened axial limiting, simultaneously, two grooves are all more shallow, twisting resistance is good, after the V-shaped groove arranging in pairs coordinates with the projection of the V-arrangement on drill chuck, can strengthen circumferentially spacing, transmit larger torsion, and V-shaped groove is mainly positioned at drillstock right-hand part, drillstock left side and drilling rod coupling part do not arrange V-shaped groove, guaranteed that like this drillstock arranges stress equalization, be unlikely to larger masterpiece for thiner part, guaranteed the intensity of drillstock under this structure of the utility model, so the utlity model has, can when realizing quick change, also provide reliable axial limiting and circumferential spacing advantage.
As improvement, crude is the surface forming after sandblast processing, and like this, not only processing is simple, and after sandblast processing, annular groove surface strength is better, is more conducive to the raising of the utility model performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Quick replaceable drill bit.
Fig. 2 is the microstructure enlarged diagram of the pawl on crude of the utility model Quick replaceable drill bit.
Shown in figure, 1, drillstock, 2, drilling rod, 3, cutter head, 4.1, first ring connected in star, the 4.2, second annular groove, 5, V-shaped groove.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model Quick replaceable drill bit, it comprises drillstock 1, drilling rod 2, cutter head 3, drillstock 1 is provided with annular groove, annular groove divides two, is respectively the first ring connected in star 4.1 and the second annular groove 4.2, the second annular grooves 4.2 that along drillstock 1, axially sequentially distribute from left to right and is positioned at drillstock 1 middle part, first ring connected in star 4.1 is positioned at drillstock 1 left part, the groove depth of the groove depth of first ring connected in star 4.1 and the second annular groove 4.2 is equal, and the span of groove depth is closed interval [1.0 millimeters, 3.0 millimeters]; Described first ring connected in star 4.1 and the second annular groove 4.2 surfaces are crude, and the microstructure of crude is pawl, being oriented tiltedly towards cutter head of pawl; The part between first ring connected in star 4.1 and the second annular groove 4.2 of the right half part of drillstock 1 and drillstock 1 is equipped with axial V-shaped groove 5, this V-shaped groove 5 arranges in pairs, and axial symmetry, V-shaped groove 5 tips are oriented to radially, drillstock 1 is regular polygon, each arrange in pairs in these two V-shaped grooves 5 lay respectively at the middle part on two axisymmetric of described regular polygon.
Crude is the surface forming after sandblast processing.
In this example, the width of two annular grooves equates, groove depth is 2.5 millimeters, like this, the span of the degree of depth of each annular groove is controlled in reasonable interval, guaranteed the intensity of annular groove as far as possible, make Quick replaceable drill bit that reliable axial limiting and circumferentially spacing is also provided when realizing quick change, and annular groove place has been difficult for twisting off; The cross section of drillstock 1 is regular hexagon; V-shaped groove 5 is two, lays respectively at the front and back of drillstock 1, and what in Fig. 1, see is the V-shaped groove 5 being positioned on the front of drillstock 1, and this is the inspiration of having used for reference slot type screwdriver, has greatly improved circumferentially spacing ability of the utility model.
Claims (2)
1. a Quick replaceable drill bit, it comprises drillstock (1), drilling rod (2), cutter head (3), drillstock (1) is provided with annular groove, it is characterized in that, annular groove divides two, be respectively the first ring connected in star (4.1) and the second annular groove (4.2) that along drillstock (1), axially sequentially distribute from left to right, the second annular groove (4.2) is positioned at drillstock (1) middle part, first ring connected in star (4.1) is positioned at drillstock (1) left part, the groove depth of the groove depth of first ring connected in star (4.1) and the second annular groove (4.2) equates, the span of groove depth is [1.0 millimeters of closed intervals, 3.0 millimeters], described first ring connected in star (4.1) and the second annular groove (4.2) surface are crude, and the microstructure of crude is pawl, being oriented tiltedly towards cutter head of pawl, the part being positioned between first ring connected in star (4.1) and the second annular groove (4.2) of the right half part of drillstock (1) and drillstock (1) is equipped with axial V-shaped groove (5), this V-shaped groove (5) arranges in pairs, and axial symmetry, V-shaped groove (5) tip is oriented to radially, drillstock (1) is regular polygon, each arrange in pairs in these two V-shaped grooves (5) lay respectively at the middle part on two axisymmetric of described regular polygon.
2. Quick replaceable drill bit according to claim 1, is characterized in that, crude is the surface forming after sandblast processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262454.1U CN203804288U (en) | 2014-05-21 | 2014-05-21 | Quickly changed drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262454.1U CN203804288U (en) | 2014-05-21 | 2014-05-21 | Quickly changed drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804288U true CN203804288U (en) | 2014-09-03 |
Family
ID=51443099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420262454.1U Expired - Fee Related CN203804288U (en) | 2014-05-21 | 2014-05-21 | Quickly changed drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500083A (en) * | 2016-02-17 | 2016-04-20 | 森泰英格（成都）数控刀具有限公司 | Cutter fixing structure and cutter and cutter handle suitable for same |
-
2014
- 2014-05-21 CN CN201420262454.1U patent/CN203804288U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500083A (en) * | 2016-02-17 | 2016-04-20 | 森泰英格（成都）数控刀具有限公司 | Cutter fixing structure and cutter and cutter handle suitable for same |
| CN105500083B (en) * | 2016-02-17 | 2019-03-05 | 森泰英格（成都）数控刀具股份有限公司 | Tool fixing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |