CN2243950Y - Drill clamping head - Google Patents
Drill clamping head Download PDFInfo
- Publication number
- CN2243950Y CN2243950Y CN 95250229 CN95250229U CN2243950Y CN 2243950 Y CN2243950 Y CN 2243950Y CN 95250229 CN95250229 CN 95250229 CN 95250229 U CN95250229 U CN 95250229U CN 2243950 Y CN2243950 Y CN 2243950Y
- Authority
- CN
- China
- Prior art keywords
- pushnut
- jaw
- hole
- face
- overcoat
- 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 drill clamping head, particularly a self-tightening drill clamping head with three claws. The utility model comprises three claws, claw sleeves, outer sleeves, propulsion nuts, etc. The utility model has the advantages of simple structure, less working process and low cost; besides, the utility model has the advantage of convenient use of a self-tightening drill clamping head with three claws.
Description
The utility model relates to a kind of drill chuck, particularly relates to a kind of three-jaw drill chuck that is used for clamping drilling bit.
Various drilling machines, lathe, milling machine and electric hand drill etc. all need to come clamping drilling bit to hole with chuck, and commonly used is the three-jaw drill chuck.The three-jaw drill chuck divides two kinds of wrench clamped-in style and self-tightening types, and self-tightening type need not use wrench to clamp, and after rotating by hand, clamping force increases with the increase of cutting force.The overwhelming majority of using is a wrench clamped-in style three-jaw drill chuck at present, and it is many to there is manufacturing process, shortcomings such as the numerous and diverse requirement of technology is high, cost is high, chucking power is not enough, use inconvenience.The Machine Tool design handbook 1 (volume two) that China Machine Press publishes discloses a kind of self-tightening type three-jaw drill chuck; it is the same with the self-tightening type three-jaw drill chuck that machine tool accessories two factories in Shanghai produce; exist complex structure, manufacturing process is numerous and diverse, operation is many, the more high shortcoming of cost, its price have unexpectedly up to more than 300 yuan.Lack a kind of simple in structure, manufacturing procedure is few, cost is low self-tightening type three-jaw drill chuck at present, be beneficial to replace awkward wrench clamped-in style three-jaw drill chuck.
The purpose of this utility model provides a kind of simple in structure, production process is few, cost is low self-tightening type three-jaw drill chuck.
Technical solution of the present utility model is: a kind of self-tightening type three-jaw drill chuck, it comprises three-jaw 1, pawl cover 2, overcoat 3, it is characterized in that pushnut 4, support spring in addition, opposite face has corresponding hole 5 between the three-jaw, three identical support springs lay respectively between the three-jaw hole, pawl cover 2 is by being fixed on three-jaw 1 in the pawl cover 2 with overcoat 3 threaded engagement, 3 in pushnut 4 and overcoat are used threaded engagement, pushnut 4 front end faces are with the contact of three-jaw 1 rear end face, and the pushnut rear end has with corresponding taper hole of drillstock or screwed hole.
Also can take following scheme: it comprises three-jaw, the pawl cover, overcoat, it is characterized in that pushnut in addition, support spring, augering screw 6, the pushnut stopping means, opposite face has corresponding hole between the three-jaw, three identical support springs lay respectively between the three-jaw hole, the pawl cover is fixed on three-jaw in the pawl cover by cooperating with sleeve thread, the pushnut stopping means is limited in pushnut in the overcoat and rotates on the trapped orbit, the pushnut rear end has with corresponding taper hole of drillstock or screwed hole, the pushnut front end has with augering screw 6 respective threads holes, augering screw 6 is contained in the pushnut front end, and augering screw 6 front end faces are with the contact of three-jaw rear end face.
The pushnut stopping means of above-mentioned three-jaw drill chuck can be to have a circle arc groove 10 at the pushnut rear portion, at overcoat and pushnut arc groove corresponding position corresponding several holes is arranged, steel ball 9 is fixed on the pushnut arc groove by external trepanning with spring 8, seals the external trepanning opening with capping 7 holddown springs 8 again.
The utility model is easy to use, does not need to clamp with wrench.During use this chuck is installed on the drillstock, rotate under the drive at drillstock, rotate for scheme 1 pushnut, its front end promotes the three-jaw rear end makes three-jaw clamp drill bit, and rotate in original position for scheme 2 pushnuts, the augering screw of installing in its front end is then pushed ahead when it rotates, and makes three-jaw push ahead the clamping drill bit.The utility model is simple in structure, and easily with processing, operation is compared than existing product can reduce 23, low cost of manufacture, estimation only reach 23 of original wrench clamped-in style, and well below original self-fastening chuck production cost.Can replace original three-jaw drill chuck, be widely used in the occasion that various drilling machines, lathe, milling machine and electric hand drill etc. need clamping drilling bit.The utility model volume is little, in light weight, make, assembling is simple.
Fig. 1 is the cross-sectional view of the utility model scheme 1.
Fig. 2 is the cross-sectional view of the utility model scheme 2.
Below in conjunction with drawings and Examples the utility model is further elaborated.
The utility model can adopt scheme 1, and structure reaches goal of the invention as shown in Figure 1.This three-jaw drill chuck, it comprises three-jaw 1, pawl cover 2, overcoat 3, pushnut 4, opposite face has the hole 5 of three pairs of correspondences between the three-jaw, three identical support springs lay respectively between the three-jaw hole 5, pawl cover 2 is by being fixed on three-jaw 1 in the pawl cover 2 with overcoat 3 threaded engagement, pushnut 4 front end faces are with the contact of three-jaw 1 rear end face with threaded engagement for 3 in pushnut 4 and overcoat, and the pushnut rear end has with corresponding taper hole of drillstock or screwed hole.Rotate under the drive at drillstock during use, pushnut rotates and pushes ahead, and its front end face promotes three-jaw rear end face makes three-jaw clamp drill bit, reaches the self-tightening purpose.The utility model is simple in structure, adds to have only flatness and the simple requirement of axiality man-hour, and operation has only about 1/3 road of existing product, manufacturing cost even be lower than wrench clamped-in style three-jaw drill chuck, and more easy to use than wrench clamped-in style.For original self-fastening chuck, the utility model cost is lower.
The utility model also can adopt scheme 2, structure as shown in Figure 2.It comprises three-jaw 1, pawl cover 2, overcoat 3, support spring, pushnut 4, pushnut stopping means, augering screw, its primary structure is identical with scheme 1, only increase pushnut stopping means and augering screw, make to drive when fastening, pushnut is only rotated on trapped orbit, and the augering screw 6 that is contained in the pushnut front end is pushed ahead at drillstock, because the augering screw front end with the contact of three-jaw rear end face, drives three-jaw to the front clamp drill bit.So-called pushnut stopping means can be to have a circle arc groove 10 at the pushnut rear portion, have corresponding some holes 1 at overcoat and pushnut arc groove corresponding position, steel ball 9 is fixed on the pushnut arc groove by external trepanning with spring 8, certainly steel ball size is sealed the external trepanning opening with capping 7 holddown springs again with arc groove radius coupling.Capping 7 can be selected helicitic texture for use with cooperating between the external trepanning opening part.
Two schemes of the utility model are to belong to same technical conceive, have unicity between the two, and the former pushnut can be along with advance and retreat when the latter and the former difference only were to use, and the latter's pushnut only rotates and do not advance.Both goals of the invention, major technique structure, effect are all identical.
Claims (3)
1, a kind of self-tightening type three-jaw drill chuck, it comprises three-jaw, pawl cover, overcoat, it is characterized in that: also have pushnut, support spring, opposite face has corresponding hole between the three-jaw, three identical support springs lay respectively between the three-jaw hole, and the pawl cover is fixed on three-jaw in the pawl cover pushnut and outer inner room threaded engagement by cooperating with sleeve thread, the pushnut front end face is with the contact of three-jaw rear end face, and the pushnut rear end has with corresponding taper hole of drillstock or screwed hole.
2, a kind of self-tightening type three-jaw drill chuck, it comprises three-jaw, the pawl cover, overcoat, it is characterized in that: also have pushnut, support spring, augering screw, the pushnut stopping means, opposite face has corresponding hole between the three-jaw, three identical support springs lay respectively between the three-jaw hole, the pawl cover is fixed on three-jaw in the pawl cover by cooperating with sleeve thread, the pushnut stopping means is limited in pushnut in the overcoat and rotates on the trapped orbit, the pushnut rear end has with corresponding taper hole of drillstock or screwed hole, the pushnut front end has with augering screw respective threads hole, augering screw is contained in the pushnut front end, and the augering screw front end face is with the contact of three-jaw rear end face.
3, self-tightening type three-jaw drill chuck according to claim 2, it is characterized in that the pushnut stopping means can be to have a circle arc groove at the pushnut rear portion, at overcoat and pushnut arc groove corresponding position corresponding several holes is arranged, steel ball is fixed on the pushnut arc groove by external trepanning with spring, seals the external trepanning opening with the capping holddown spring again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95250229 CN2243950Y (en) | 1995-12-28 | 1995-12-28 | Drill clamping head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95250229 CN2243950Y (en) | 1995-12-28 | 1995-12-28 | Drill clamping head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243950Y true CN2243950Y (en) | 1997-01-01 |
Family
ID=33886490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95250229 Expired - Fee Related CN2243950Y (en) | 1995-12-28 | 1995-12-28 | Drill clamping head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243950Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646376A (en) * | 2018-07-12 | 2018-10-12 | 信利光电股份有限公司 | A kind of focusing ring |
| CN111843782A (en) * | 2020-07-16 | 2020-10-30 | 合肥工业大学 | Electric heating tube contact rotary grinding machine |
-
1995
- 1995-12-28 CN CN 95250229 patent/CN2243950Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646376A (en) * | 2018-07-12 | 2018-10-12 | 信利光电股份有限公司 | A kind of focusing ring |
| CN111843782A (en) * | 2020-07-16 | 2020-10-30 | 合肥工业大学 | Electric heating tube contact rotary grinding machine |
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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 |