CN204339070U - Friction-type tap holder - Google Patents
Friction-type tap holder Download PDFInfo
- Publication number
- CN204339070U CN204339070U CN201420768737.3U CN201420768737U CN204339070U CN 204339070 U CN204339070 U CN 204339070U CN 201420768737 U CN201420768737 U CN 201420768737U CN 204339070 U CN204339070 U CN 204339070U
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- CN
- China
- Prior art keywords
- friction
- plate
- sleeve
- hole
- friction plate
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- Expired - Fee Related
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Abstract
This patent discloses friction-type tap holder, comprise shell, mandrel, the first friction plate, the second friction plate and threaded cap; Shell comprises base plate and the first sleeve, and base plate is positioned at the first sleeve left part, and base plate is provided with square clamp, and the first friction plate and base plate removably connect, and the first sleeve is male-pipe; Described threaded cap is made up of the second sleeve pipe and baffle plate; Second sleeve pipe is the riffled tube matched with the first sleeve pipe; Described baffle plate is provided with multiple equally distributed support bar, is provided with through hole in the middle part of baffle plate; The diameter of clamping part is less than the aperture of the through hole of baffle plate; The right-hand member of clamping part is provided with expansion set hole and screwed hole, and expansion set is provided with expansion sleeve in hole; First friction plate is provided with multiple ball-shaped pit, and the second friction plate is provided with multiple projection matched with the pit on the first friction plate.The deficiency of screw tap frangibility, rotten tooth, screw tap replacing complexity is there is in this patent when overcoming existing tap tapping.
Description
Technical field
The utility model relates to screw tap clamp field, is specifically related to a kind of friction-type tap holder.
Background technology
In machining, often can conventional clip clamping screw tap be utilized to carry out the processing of below M8 minor diameter internal thread on the equipment such as bench drill, radial drilling machine and drilling and milling machine, and following phenomenon easily occur carrying out above-mentioned adding man-hour; For when attacking the screwed hole of below M8, the intensity of screw tap own is not high, if when the material hardness of tapping is large or tapping surplus is larger, the phenomenon that the rotten tooth of screw tap or screw tap fracture very easily occurs.When workpiece carries out blind hole tapping, as do not return by screw tap in time, also there will be the problem that screw tap fractures.During current work-piece tapping, the chuck of lathe directly clamps the tap holder of screw tap, and there is screw tap and change cumbersome, tap handle is directly clamped by rigid cartridge, can make tap handle generation microdeformation.When utilizing conventional clip clamping screw tap, when particularly attacking the larger screwed hole of diameter, the cutting force that screw tap is subject to is comparatively large, does not particularly correctly install when screw tap is installed, and when screw tap and steering spindle have an angle, very easily occurs the phenomenon that screw tap fractures.
The deficiency of screw tap frangibility, rotten tooth, screw tap replacing complexity is there is as can be seen here during existing tap tapping.
Utility model content
The technical problems to be solved in the utility model is the deficiency for there is screw tap frangibility, rotten tooth, screw tap replacing complexity during existing tap tapping, and provide a kind of friction-type tap holder, simple feature do not changed by frangibility, rotten tooth and screw tap to have screw tap.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: friction-type tap holder, comprises shell, mandrel, the first friction plate, the second friction plate and threaded cap; Shell comprises base plate and the first sleeve, and base plate is positioned at the first sleeve left part, and base plate is provided with square clamp, and the first friction plate and base plate removably connect, and the first sleeve is male-pipe; Described threaded cap is made up of the second sleeve pipe and baffle plate, and baffle plate is positioned at the left end of the second sleeve pipe; Second sleeve pipe is the riffled tube matched with the first sleeve pipe; Described baffle plate is provided with multiple equally distributed support bar, is provided with through hole in the middle part of baffle plate; Mandrel is followed successively by friction part and clamping part from left to right; Friction part is disk, and clamping part is cylinder, and the diameter of disk is greater than the diameter of clamping part; The diameter of clamping part is less than the aperture of the through hole of baffle plate; The right-hand member of clamping part is provided with expansion set hole and screwed hole, and screwed hole communicates with expansion set hole, and expansion set is provided with expansion sleeve in hole; Screwed hole is provided with holding screw, and friction part is provided with pit, and the second friction plate is positioned at pit, and the second friction plate and friction part removably connect; First friction plate is provided with multiple ball-shaped pit, and the second friction plate is provided with multiple projection matched with the pit on the first friction plate.
Adopt the friction-type tap holder in this programme, friction-type tap holder comprises shell, mandrel, the first friction plate, the second friction plate and threaded cap; Threaded cap is connected with outer casing screw, threaded cap shell is upper left move right time, the support bar be positioned on threaded cap moves left and right to mandrel, regulates the frictional force between the first friction plate and the second friction plate.Through hole on threaded cap facilitates the clamping part of mandrel accessiblely can pass threaded cap.First friction plate and base plate removably connect, and facilitate the replacing of the first friction plate.Support bar is uniformly distributed the friction part uniform force making mandrel on the baffle plate of threaded cap.The diameter of the friction part of mandrel is greater than the diameter of clamping part, facilitates support bar to support clamping part.Expansion set is provided with expansion sleeve in hole, holding screw extrusion expansion cover, makes it be out of shape by the frictional force between expansion sleeve and tap holder, thus realizes clamping tap holder.Avoid tap holder to be pulled, repeatedly clamp the defect of distortion, make tap holder uniform force avoid concentrated stress to produce, direction chuck facilitates the grips of lathe.
Operation principle of the present utility model and beneficial effect are: when using the utility model, first rotate threaded cap according to the pore size in the material of workpiece and the hole of required tapping, support bar is moved to the direction near square clamp, support bar moves to the direction near square clamp against mandrel, second friction plate is contacted with the first friction plate more tight, and then regulate the frictional force between the first friction plate and the second friction plate.Rotating holding screw makes expansion sleeve be in relaxed state, is inserted by screw tap in expansion sleeve, then rotates holding screw and makes holding screw support expansion sleeve, make the tap holder of expansion sleeve deformation grip screw tap.Square clamp is inserted into the clamping part place of drilling machine, start drilling machine and make screw tap carry out tapping to workpiece, if the cutting force in tapping process is comparatively large, when cutting force is greater than the frictional force between the first friction plate and the second friction plate, there is skidding in screw tap.Thus avoid screw tap by the phenomenon fractureed.
The utility model friction-type tap holder as can be seen here, simple feature do not changed by frangibility, rotten tooth and screw tap to have screw tap.
Further, the screw thread of the first sleeve is double thread.It is distant that threaded cap support bar when rotation one is enclosed advances.
Further, the end of support bar is embedded with cushion.Avoid support bar directly to contact mandrel, mandrel is produced and scratches.
Further, baffle plate is fixed with stage clip, and support bar is positioned at stage clip inside, when stage clip is in free state, the length of gland grows 50 millimeters than the length of support bar.Prevent drill bit in the course of the work because vibrations make threaded cap rotate, thus reduce the frictional force between the first friction plate and the second friction plate.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the utility model embodiment.
Detailed description of the invention
Below by detailed description of the invention, the utility model is described in further detail:
Reference numeral in Figure of description comprises: shell 1, mandrel 2, first friction plate 3, second friction plate 4, threaded cap 5, square clamp 6, support bar 7, stage clip 8, expansion sleeve 9, screw tap 10.
Embodiment is substantially as shown in Figure 1: friction-type tap holder comprises shell 1, mandrel 2, first friction plate 3, second friction plate 3 and threaded cap 5, shell 1 is made up of base plate and the first sleeve, base plate is positioned at the first sleeve left part, base plate is welded with square clamp 6.First friction plate 3 is connected by dog screw with base plate, and the first sleeve is male-pipe.Threaded cap 5 is made up of the second sleeve pipe and baffle plate, and baffle plate is positioned at the left end of the second sleeve pipe.Second sleeve pipe is the riffled tube matched with the first sleeve pipe.Baffle plate is welded with four equally distributed support bars 7, the end of support bar 7 is embedded with cushion, baffle plate is welded with stage clip 8, and support bar 7 is positioned at the internal diameter of stage clip 8, when stage clip 8 is in free state, the length of gland grows 50 millimeters than the length of support bar 7.Through hole is provided with in the middle part of baffle plate.Mandrel 2 is followed successively by friction part and clamping part from left to right.Friction part is disk, and clamping part is cylinder, and the diameter of disk is greater than the diameter of clamping part.The diameter of clamping part is less than the aperture of the through hole of baffle plate.The right-hand member of clamping part is provided with expansion set hole and screwed hole, and screwed hole communicates with expansion set hole, is provided with expansion sleeve 9 in expansion set hole.Screwed hole is provided with holding screw.Friction part is provided with pit, and the second friction plate 3 is positioned at pit, and the second friction plate 3 is connected by dog screw with friction part.First friction plate 3 is provided with multiple ball-shaped pit, and the second friction plate 3 is provided with multiple projection matched with the pit on the first friction plate 3.
In the specific implementation, base plate and the first sleeve are one-body molded, and square clamp 6 adopts with base plate and welds.Friction part and clamping part are formed in one.Second sleeve adopts with baffle plate and welds, and baffle plate adopts with support bar 7 and welds.When using the utility model, threaded cap 5 is rotated in the aperture of first holing needed for workpiece, support bar 7 is moved to the direction near square clamp 6, cushion moves to the direction near square clamp 6 against mandrel 2, second friction plate 3 is contacted with the first friction plate 3 more tight, and then make the frictional force between the first friction plate 3 and the second friction plate 3 larger.Rotating holding screw makes expansion sleeve 9 be in relaxed state, is inserted by screw tap 10 in expansion sleeve 9, then rotates holding screw and makes holding screw support expansion sleeve 9, make the tap holder of expansion sleeve 9 deformation grip screw tap 10.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. friction-type tap holder, is characterized in that: comprise shell, mandrel, the first friction plate, the second friction plate and threaded cap; Shell comprises base plate and the first sleeve, and base plate is positioned at the first sleeve left part, and base plate is provided with square clamp, and the first friction plate and base plate removably connect, and the first sleeve is male-pipe; Described threaded cap is made up of the second sleeve pipe and baffle plate, and baffle plate is positioned at the left end of the second sleeve pipe; Second sleeve pipe is the riffled tube matched with the first sleeve pipe; Described baffle plate is provided with multiple equally distributed support bar, is provided with through hole in the middle part of baffle plate; Mandrel is followed successively by friction part and clamping part from left to right; Friction part is disk, and clamping part is cylinder, and the diameter of disk is greater than the diameter of clamping part; The diameter of clamping part is less than the aperture of the through hole of baffle plate; The right-hand member of clamping part is provided with expansion set hole and screwed hole, and screwed hole communicates with expansion set hole, and expansion set is provided with expansion sleeve in hole; Screwed hole is provided with holding screw, and friction part is provided with pit, and the second friction plate is positioned at pit, and the second friction plate and friction part removably connect; First friction plate is provided with multiple ball-shaped pit, and the second friction plate is provided with multiple projection matched with the pit on the first friction plate.
2. friction-type tap holder according to claim 1, is characterized in that: the screw thread of the first sleeve is double thread.
3. friction-type tap holder according to claim 2, is characterized in that: the end of support bar is embedded with cushion.
4. friction-type tap holder according to claim 3, is characterized in that: baffle plate is fixed with stage clip, and support bar is positioned at stage clip inside, and when stage clip is in free state, the length of gland grows 50 millimeters than the length of support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768737.3U CN204339070U (en) | 2014-12-09 | 2014-12-09 | Friction-type tap holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768737.3U CN204339070U (en) | 2014-12-09 | 2014-12-09 | Friction-type tap holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204339070U true CN204339070U (en) | 2015-05-20 |
Family
ID=53222372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420768737.3U Expired - Fee Related CN204339070U (en) | 2014-12-09 | 2014-12-09 | Friction-type tap holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204339070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493317A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Friction-type tapping chuck |
-
2014
- 2014-12-09 CN CN201420768737.3U patent/CN204339070U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493317A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Friction-type tapping chuck |
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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: 20150520 Termination date: 20151209 |
|
| EXPY | Termination of patent right or utility model |