CN204686223U - A kind of binodal type tap holder - Google Patents
A kind of binodal type tap holder Download PDFInfo
- Publication number
- CN204686223U CN204686223U CN201520322657.XU CN201520322657U CN204686223U CN 204686223 U CN204686223 U CN 204686223U CN 201520322657 U CN201520322657 U CN 201520322657U CN 204686223 U CN204686223 U CN 204686223U
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- China
- Prior art keywords
- power transmission
- holder
- mentioned
- tap
- transmission cover
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of binodal type tap holder, comprise power transmission cover, drill holder, overload protection assembly and load module, wherein above-mentioned power transmission cover and drill holder are all arranged in tap holder cover, and be axially adjacent to setting, load module is provided with in drill holder, so that quick assembling screw tap, screw tap is inserted into power transmission by the right-hand member of drill holder and overlaps the square hole that left side is offered, to fix; Above-mentioned overload protection assembly is arranged on power transmission and puts.The utility model adopts and is combined with drill holder by power transmission cover, to provide axial buffer operator guards, avoids screw tap axial force excessive and occurs fractureing, and improves screw tap service life.
Description
Technical field
The utility model relates to threading drill bit field, refers in particular to a kind of binodal type tap holder.
Background technology
Boring and tapping is commonly used in mechanical processing process, boring refers to processes the operation of portalling with drill bit on solid material, tapping to be screwed in by screw tap in the bottom outlet that will bore with certain moment of torsion to process internal thread, boring and tapping need to drive drill bit and screw tap High Rotation Speed respectively, the torque axis of rotating shaft to be changed to the driving force of boring and tapping downwards, drill bit and screw tap are separately fixed on chuck, its High Rotation Speed is driven by chuck, drill bit and the screw tap of High Rotation Speed need overload protection arrangement, fracture to prevent overload excessive or moment of torsion excessive and twist into two parts, existing tap holder, general employing single-unit tube-in-tube structure, as the patented technology that license notification number is CN 2504024Y disclosed in Chinese utility model patent " tap holder ", namely single tap chuck is adopted, the tap chuck of this kind of structure does not possess the axial operator guards of screw tap, easily occur that screw tap causes situation about fractureing because axial force is excessive.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art; a kind of employing is provided to be combined with drill holder by power transmission cover; to provide axial buffer operator guards, avoid screw tap axial force excessive and occur fractureing, improve the binodal type tap holder in screw tap service life.
The technical scheme that the utility model is taked is as follows: a kind of binodal type tap holder, comprise power transmission cover, drill holder, overload protection assembly and load module, wherein above-mentioned power transmission cover and drill holder are all arranged in tap holder cover, and be axially adjacent to setting, load module is provided with in drill holder, so that quick assembling screw tap, screw tap is inserted into power transmission by the right-hand member of drill holder and overlaps the square hole that left side is offered, to fix; Above-mentioned overload protection assembly is arranged on power transmission and puts.
Preferably, described drill holder is tubular structure, and the middle part of the cylindrical shell of drill holder offers through hole, and the left end of this through hole is provided with interior step anchor ring, and the right-hand member of this through hole is provided with inner conical surface structure; The right-hand member outer wall of cylindrical shell is provided with outer step anchor ring, and outer step anchor ring is fastened on tap holder and puts, so that axial limiting.
Preferably, the opening of described inner conical surface structure increases from left to right according to this.
Preferably, described load module comprises spring, centering ball and centring sleeve, and wherein, the left end of above-mentioned spring is fixed on above-mentioned interior step anchor ring, and the right-hand member of spring is connected with above-mentioned centring sleeve, and centring sleeve inserts in drill holder, and extends to the outside of drill holder.
Preferably, described centering ball is fastened on the sidewall of centring sleeve, and embeds in above-mentioned inner conical surface structure, and is free to slide along inner conical surface structure.
Preferably, described power transmission cover is tubular structure, and the two ends of power transmission cover are respectively equipped with the first bulge loop and the second bulge loop, form annular dead slot between the first bulge loop and the second bulge loop; Above-mentioned first bulge loop is provided with at least two guide grooves, and guide groove is arranged along the circumferencial direction interval of the first bulge loop.
Preferably; described overload protection assembly comprises Compress Spring, steel ball and adjusting nut, and wherein, the two ends of above-mentioned spring are connected to above-mentioned adjusting nut and power transmission puts; adjusting nut compresses Compress Spring in advance to provide preload force, and provides axial buffer power to screw tap.
Preferably, the outside of described steel ball clamping is fixed on the sidewall of tap holder cover, and the inner side of steel ball embeds in above-mentioned guide groove, the radial load that tap holder overlaps is passed to power transmission cover by guide groove, and is overlapped by power transmission and is finally passed to screw tap.
The beneficial effects of the utility model are:
The defect that the utility model exists for prior art and deficiency carry out reformed AHP, be binodal nested structure by existing single-unit nested structure Curve guide impeller, binodal nested structure comprise be axially disposed within tap holder cover in power transmission cover and drill holder, power transmission cover and drill holder are adjacent to setting, load module is provided with in drill holder, to realize the quick assembling of screw tap, during assembling, centring sleeve is pressed to the inside, centring sleeve makes spring-compressed, centering ball slips into inner conical surface diameter of movement larger part to the left, make screw tap channel conductive, in the square opening that insertion screw tap to power transmission is overlapped, so that positioning screw tap, after screw tap installation, unclamp drill holder, recoil of spring makes centering ball skid off inner conical surface structure, clamping screw tap, complete assembling, the outside of power transmission cover is provided with the first bulge loop and the second bulge loop, it is annular dead slot between first bulge loop and the second bulge loop, first bulge loop offers four guide grooves, steel ball is embedded with in guide groove, the outer end of steel ball is clamped on the sidewall of tap holder cover, steel ball is radial force transmission element, be supplied to power transmission cover with radial load, when screw tap radial load is excessive, steel ball is by the axial compression of power transmission cover, and now steel ball is slipped in annular dead slot by guide groove, makes radial transmission failure, occur skidding, thus achieve radial overload protective function, after radial transmission failure, lathe likely can continue to drive screw tap axial feed, and now screw tap axially can press power transmission cover, power transmission is overlapped and progressively compresses Compress Spring, play axial buffer function, prevent screw tap from fractureing because axial force is excessive.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of power transmission cover in Fig. 1.
Fig. 3 is the sectional view of Fig. 2.
Fig. 4 is the top view of Fig. 2.
Fig. 5 is the structural representation of drill holder in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figures 1 to 5, the technical scheme that the utility model is taked is as follows: a kind of binodal type tap holder, comprise power transmission cover 1, drill holder 2, overload protection assembly and load module, wherein above-mentioned power transmission cover 1 and drill holder 2 are all arranged in tap holder cover, and be axially adjacent to setting, be provided with load module in drill holder 2, so that quick assembling screw tap, screw tap is inserted into power transmission by the right-hand member of drill holder 2 and overlaps the square hole 15 that 1 left side is offered, to fix; Above-mentioned overload protection assembly is arranged on power transmission cover 1.
Drill holder 2 is tubular structure, and the middle part of the cylindrical shell 21 of drill holder 2 offers through hole, and the left end of this through hole is provided with interior step anchor ring 22, and the right-hand member of this through hole is provided with inner conical surface structure 23; The right-hand member outer wall of cylindrical shell 21 is provided with outer step anchor ring 24, and outer step anchor ring 24 is fastened on tap holder and puts, so that axial limiting.
The opening of inner conical surface structure 23 increases from left to right according to this.
Load module comprises spring 6, centering ball 7 and centring sleeve 8, and wherein, the left end of above-mentioned spring 6 is fixed on above-mentioned interior step anchor ring, and the right-hand member of spring 6 is connected with above-mentioned centring sleeve 8, and centring sleeve 8 inserts in drill holder 2, and extends to the outside of drill holder 2.
Centering ball 7 is fastened on the sidewall of centring sleeve 8, and embeds in above-mentioned inner conical surface structure 23, and is free to slide along inner conical surface structure 23.
Power transmission cover 1 be tubular structure, and the two ends that power transmission overlaps 1 are respectively equipped with between the first bulge loop 11 and the second bulge loop 12, first bulge loop 11 and the second bulge loop 12 and form annular dead slot 13; Above-mentioned first bulge loop 11 is provided with at least two guide grooves 14, and guide groove is arranged along the circumferencial direction interval of the first bulge loop 11.
Overload protection assembly comprises Compress Spring 3, steel ball 4 and adjusting nut 5; wherein; the two ends of above-mentioned spring 3 are connected to above-mentioned adjusting nut 5 and overlap on 1 with power transmission, and adjusting nut 5 compresses Compress Spring 3 in advance to provide preload force, and provides axial buffer power to screw tap.
The outside clamping of steel ball 4 is fixed on the sidewall of tap holder cover, and the inner side of steel ball 4 embeds in above-mentioned guide groove 14, the radial load that tap holder overlaps is passed to power transmission cover 1 by guide groove 14, and is finally passed to screw tap by power transmission cover 1.
Further, existing single-unit nested structure Curve guide impeller is binodal nested structure by the utility model, binodal nested structure comprise be axially disposed within tap holder cover in power transmission cover and drill holder, power transmission cover and drill holder are adjacent to setting, load module is provided with in drill holder, to realize the quick assembling of screw tap, during assembling, centring sleeve is pressed to the inside, centring sleeve makes spring-compressed, centering ball slips into inner conical surface diameter of movement larger part to the left, make screw tap channel conductive, in the square opening that insertion screw tap to power transmission is overlapped, so that positioning screw tap, after screw tap installation, unclamp drill holder, recoil of spring makes centering ball skid off inner conical surface structure, clamping screw tap, complete assembling, the outside of power transmission cover is provided with the first bulge loop and the second bulge loop, it is annular dead slot between first bulge loop and the second bulge loop, first bulge loop offers four guide grooves, steel ball is embedded with in guide groove, the outer end of steel ball is clamped on the sidewall of tap holder cover, steel ball is radial force transmission element, be supplied to power transmission cover with radial load, when screw tap radial load is excessive, steel ball is by the axial compression of power transmission cover, and now steel ball is slipped in annular dead slot by guide groove, makes radial transmission failure, occur skidding, thus achieve radial overload protective function, after radial transmission failure, lathe likely can continue to drive screw tap axial feed, and now screw tap axially can press power transmission cover, power transmission is overlapped and progressively compresses Compress Spring, play axial buffer function, prevent screw tap from fractureing because axial force is excessive.
Embodiment of the present utility model just introduces its detailed description of the invention, does not lie in and limits its protection domain.The technical staff of the industry can make some amendment under the inspiration of the present embodiment, therefore all equivalences done according to the utility model the scope of the claims change or modify, and all belong within the scope of the utility model Patent right requirement.
Claims (8)
1. a binodal type tap holder, it is characterized in that: comprise power transmission cover (1), drill holder (2), overload protection assembly and load module, wherein above-mentioned power transmission cover (1) and drill holder (2) are all arranged in tap holder cover, and be axially adjacent to setting, drill holder is provided with load module in (2), so that quick assembling screw tap, screw tap is inserted into the square hole (15) that power transmission cover (1) left side is offered by the right-hand member of drill holder (2), to fix; Above-mentioned overload protection assembly is arranged on power transmission cover (1).
2. a kind of binodal type tap holder according to claim 1, it is characterized in that: described drill holder (2) is tubular structure, the middle part of the cylindrical shell (21) of drill holder (2) offers through hole, the left end of this through hole is provided with interior step anchor ring (22), and the right-hand member of this through hole is provided with inner conical surface structure (23); The right-hand member outer wall of cylindrical shell (21) is provided with outer step anchor ring (24), and outer step anchor ring (24) is fastened on tap holder and puts, so that axial limiting.
3. a kind of binodal type tap holder according to claim 2, is characterized in that: the opening of described inner conical surface structure (23) increases from left to right according to this.
4. a kind of binodal type tap holder according to claim 3, it is characterized in that: described load module comprises spring (6), centering ball (7) and centring sleeve (8), wherein, the left end of above-mentioned spring (6) is fixed on above-mentioned interior step anchor ring, the right-hand member of spring (6) is connected with above-mentioned centring sleeve (8), centring sleeve (8) inserts in drill holder (2), and extends to the outside of drill holder (2).
5. a kind of binodal type tap holder according to claim 4, is characterized in that: described centering ball (7) is fastened on the sidewall of centring sleeve (8), and embeds in above-mentioned inner conical surface structure (23), and be free to slide along inner conical surface structure (23).
6. a kind of binodal type tap holder according to claim 5, it is characterized in that: described power transmission cover (1) is tubular structure, the two ends of power transmission cover (1) are respectively equipped with the first bulge loop (11) and the second bulge loop (12), form annular dead slot (13) between the first bulge loop (11) and the second bulge loop (12); Above-mentioned first bulge loop (11) is provided with at least two guide grooves (14), and guide groove is arranged along the circumferencial direction interval of the first bulge loop (11).
7. a kind of binodal type tap holder according to claim 6; it is characterized in that: described overload protection assembly comprises Compress Spring (3), steel ball (4) and adjusting nut (5); wherein; the two ends of above-mentioned spring (3) are connected to above-mentioned adjusting nut (5) with on power transmission cover (1); adjusting nut (5) compresses Compress Spring (3) in advance to provide preload force, and provides axial buffer power to screw tap.
8. a kind of binodal type tap holder according to claim 7, it is characterized in that: the outside clamping of described steel ball (4) is fixed on the sidewall of tap holder cover, the inner side of steel ball (4) embeds in above-mentioned guide groove (14), the radial load that tap holder overlaps is passed to power transmission cover (1) by guide groove (14), and be finally passed to screw tap by power transmission cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322657.XU CN204686223U (en) | 2015-05-19 | 2015-05-19 | A kind of binodal type tap holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322657.XU CN204686223U (en) | 2015-05-19 | 2015-05-19 | A kind of binodal type tap holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204686223U true CN204686223U (en) | 2015-10-07 |
Family
ID=54226566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520322657.XU Expired - Fee Related CN204686223U (en) | 2015-05-19 | 2015-05-19 | A kind of binodal type tap holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204686223U (en) |
-
2015
- 2015-05-19 CN CN201520322657.XU patent/CN204686223U/en not_active Expired - Fee Related
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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: 20151007 Termination date: 20180519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |