CN2425751Y - Quick change hole-undercutting drill - Google Patents
Quick change hole-undercutting drill Download PDFInfo
- Publication number
- CN2425751Y CN2425751Y CN 00217831 CN00217831U CN2425751Y CN 2425751 Y CN2425751 Y CN 2425751Y CN 00217831 CN00217831 CN 00217831 CN 00217831 U CN00217831 U CN 00217831U CN 2425751 Y CN2425751 Y CN 2425751Y
- Authority
- CN
- China
- Prior art keywords
- shoulder
- dog
- drill
- sliding sleeve
- inclined hole
- 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
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 239000011324 bead Substances 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model relates to a dog for quickly changing a drill. One end of a dog body is a clamping handle, and the other end is provided with an inner hexagonal central positioning hole. The middle part of the dog body is provided with a shoulder; the rear side of the shoulder is provided with an inclined hole, the front side is provided with a long groove, and both of the inclined hole and the long groove are communicated with a central hole; a small ball is embedded in the inclined hole; the dog body position is sheathed with a sliding sleeve with a stopping opening, and the interior of the rear end face is fixedly provided with a baffle ring; one end of a compression spring is propped at the stopping opening, and the other end is propped at the shoulder; a push rod of a spring belt is positioned in the long groove. The dog has the advantages of simple structure, good versatility, high safety and reliability, and besides, the utility model can quickly connect the drill with a three-jaw drill chuck on a hand tool or disassemble the drill from the three-jaw drill chuck on a hand tool.
Description
The utility model relates to a kind of fast replacing drill dog, is applicable to the hexagonal handle drill bit of jackhammer, electric drill and band concave arc shape bullet groove.
At present, clamping drilling bit on jackhammer or drilling machine generally all adopts spanner three-jaw drill chuck.Spanner three-jaw drill chuck is by rotary spanner, drives the rotation of nut, through the screw thread transmission, three clamp jaws is moved forward or backward, thereby clamps or loosen drill bit.During operation,, all must firmly pull the spanner rotation,, and require great effort very much so operation is not only inconvenient regardless of being clamping or loosening drill bit; In the time of particularly will boring a plurality of hole that differs in size, will be continually bit change more, more seem inconvenient, inefficiency, labour intensity is big.
The purpose of this utility model is to overcome at present the more inconvenient shortcoming of bit change effort, and a kind of fast replacing drill dog is provided.
The purpose of this utility model is to realize like this.The fast replacing drill dog, dog body 1 one ends are clamping handle 12, and the other end has interior hexagon center positioning hole 6, and center positioning hole is coaxial with the dog body; Dog body middle part has shoulder 10; The shoulder back has an inclined hole 11, and inclined hole communicates with centre bore; The shoulder front has elongated slot 7, and elongated slot communicates with inclined hole; Bead 3 is inlaid in the inclined hole; Dog body place is with sliding sleeve 5, and sliding sleeve front end face place has sliding sleeve seam 9, fixedly connected baffle ring 2 in the rear end face; One compression spring 4 is arranged between shoulder and sliding sleeve seam, and spring one end withstands on the seam, and the other end withstands on the shoulder; The bending of spring front end is push rod 8, and push rod is positioned at elongated slot.
During use, the clamping handle is installed on the three-jaw drill chuck of electronic or hand-operated tools usually, and it is fixed, and driving torque.The hexagonal handle of being with the hexagonal handle drill bit of bullet groove is inserted in the center positioning hole, the drillstock end face promotes bead and rolls backward and leave center positioning hole along inclined hole, make bit sub successfully in the patchhole, bead in the inclined hole and the engagement of concave arc bullet groove, drill bit is played location and locking effect, drill bit is fixed in the center positioning hole.Bead and bullet groove are formed an auto lock system.Simultaneously, bead promotes baffle ring, drives sliding sleeve and moves backward, and sliding sleeve compression spring makes sliding sleeve obtain a thrust forward.When bit sub insertion certain depth, when the communications and liaison of bullet groove on the bit sub and the concentricity locating hole of inclined hole were in same position, sliding sleeve, baffle ring moved forward under the thrust of spring, bead is pushed bullet groove, and and push down bead, make bead locking drillstock, drill bit then can not be deviate from voluntarily.Because of sliding sleeve can only move freely forward, so after the bead homology functor groove engagement locking, can prevent that sliding sleeve from moving backward.Move backward when promoting sliding sleeve, the sliding sleeve seam promotes and the compression spring, and the spring inner push-rod moves backward, promotes bead and rolls backward along inclined hole, and leave bullet groove, causes drill bit to come off voluntarily in dog.
The utility model design feature is that the hexagon center positioning hole on the dog body matches with the drill bit hexagonal handle 13 that has bullet groove 14, can transmit moment of torsion, does not have circumferential slip, has saved clamping system; The inclined hole that is had communicates with center positioning hole, and the part of bead is absorbed in the center positioning hole, is meshed with bullet groove on the drillstock, plays location and locking effect, because the relation of inclined hole, bead is in self-locking state, and drill bit can not come off automatically; With elongated slot communicate with inclined hole, can make push rod on the spring promote bead and move backward and break away from bullet groove, it is easily quick therefore to shirk drill bit; Because spring places between shoulder and the sliding sleeve seam, under the effect of spring, sliding sleeve can only move forward, and drives baffle ring and pushes down bead, and bead can not be become flexible, even in high speed rotating, bead can not break away from bullet groove, and drill bit can not be deviate from automatically.The utility model is simple in structure, hexagonal handle drill bit applicable to jackhammer, electric drill and band concave arc shape bullet groove, versatility is good, three-jaw drill chuck on drill bit and the hand-operated tools is coupled together, installation and removal drill bit effectively, work safety, reliable clamping, the efficient height, laborsaving, save time.
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is the utility model fundamental diagrams.
1 dog body, 2 baffle rings, 3 beads, 4 springs, 5 sliding sleeves, 6 center positioning holes, 7 elongated slots, 8 push rods, 9 sliding sleeve seams, 10 shoulders, 11 inclined holes, 12 clamping handles, 13 bit subs, 14 bullet groove.
Embodiment: the fast replacing drill dog, dog body 1 one ends are clamping handle 12, and the other end has interior hexagon center positioning hole 6, and center positioning hole is coaxial with the dog body; Dog body middle part has shoulder 10; The shoulder back has an inclined hole 11, and inclined hole communicates with centre bore; The shoulder front has elongated slot 7, and elongated slot communicates with inclined hole; Bead 3 is inlaid in the inclined hole; Dog body place is with sliding sleeve 5, and sliding sleeve front end face place has sliding sleeve seam 9, fixedly connected baffle ring 2 in the rear end face; One compression spring 4 is arranged between shoulder and sliding sleeve seam, and spring one end withstands on the seam, and the other end withstands on the shoulder; The bending of spring front end is push rod 8, and push rod is positioned at elongated slot.
Claims (1)
1, a kind of fast replacing drill dog is characterized in that dog body (1) one end is clamping handle (12), and the other end has interior hexagon center positioning hole (6), and center positioning hole is coaxial with the dog body; Dog body middle part has shoulder (10); The shoulder back has an inclined hole (11), and inclined hole communicates with centre bore; The shoulder front has elongated slot (7), and elongated slot communicates with inclined hole;
Bead (3) is inlaid in the inclined hole;
Dog body place is with sliding sleeve (5), and sliding sleeve front end face place has sliding sleeve seam (9), fixedly connected baffle ring (2) in the rear end face; One compression spring (4) is arranged between shoulder and sliding sleeve seam, and spring one end withstands on the seam, and the other end withstands on the shoulder; The bending of spring front end is push rod (8), and push rod is positioned at elongated slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217831 CN2425751Y (en) | 2000-05-30 | 2000-05-30 | Quick change hole-undercutting drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217831 CN2425751Y (en) | 2000-05-30 | 2000-05-30 | Quick change hole-undercutting drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2425751Y true CN2425751Y (en) | 2001-04-04 |
Family
ID=33583334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00217831 Expired - Fee Related CN2425751Y (en) | 2000-05-30 | 2000-05-30 | Quick change hole-undercutting drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2425751Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061697A (en) * | 2014-03-04 | 2016-10-26 | 木构造系统株式会社 | Device for forming expanded hole section |
-
2000
- 2000-05-30 CN CN 00217831 patent/CN2425751Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061697A (en) * | 2014-03-04 | 2016-10-26 | 木构造系统株式会社 | Device for forming expanded hole section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |