CN217317015U - Tool for rock drilling bit - Google Patents
Tool for rock drilling bit Download PDFInfo
- Publication number
- CN217317015U CN217317015U CN202220718022.1U CN202220718022U CN217317015U CN 217317015 U CN217317015 U CN 217317015U CN 202220718022 U CN202220718022 U CN 202220718022U CN 217317015 U CN217317015 U CN 217317015U
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- sleeve
- drill bit
- taper
- tool
- outer sleeve
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- 239000011435 rock Substances 0.000 title claims abstract description 22
- 238000005553 drilling Methods 0.000 title abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000003754 machining Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The utility model provides a tool for a rock drilling bit, which comprises an outer sleeve body, wherein one end in the outer sleeve body is provided with a big end cavity, and the other end is provided with a small end cavity; a first taper sleeve and a second taper sleeve which are correspondingly matched with the two ends of the elastic sleeve are arranged in the small end cavity; the outer sleeve body located on the side where the second taper sleeve is located is provided with the locking sleeve in a matched mode, the second taper sleeve is pushed to slide in the cavity of the small end along with the pushing of the locking sleeve, the elastic sleeve is made to bear pressure, the effect that the inner diameter is reduced is achieved, and the clamping action on the first circumference and the second circumference of the drill bit is completed. The tool can realize high-precision quick clamping and positioning of the drill bit, ensure the coaxiality with an excircle in the subsequent inner hole machining process, further improve the machining precision and efficiency and ensure the quality of the drill bit.
Description
Technical Field
The utility model relates to a rock drill bit frock field, concretely relates to frock for rock drill bit.
Background
Rock drill bit is a common rock drilling product, and its appearance structure characteristics lie in: the circumference of one end of the rock drilling bit is provided with a plurality of gaps used for exhausting or discharging powder, and the circumference of the other end of the rock drilling bit is provided with a spline. The processing of drill bit hole is carried out after accomplishing the above-mentioned appearance structure processing of rock drilling bit again in the concrete processing technology process, in to drill bit hole course of working, because the existence of above-mentioned appearance structure can lead to drill bit clamping in-process hole and excircle alignment difficulty, and then leads to drill bit hole machining efficiency low, in addition because the hole can't guarantee with the excircle axiality, seriously influences drill bit normal work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a frock for rock drill bit, this frock can realize the quick clamping location of high accuracy to the drill bit, guarantees in its follow-up hole course of working with the axiality of excircle, and then improves machining precision and efficiency, guarantees the drill bit quality.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the device comprises an outer sleeve body, wherein a large-end cavity is arranged at one end in the outer sleeve body, and a small-end cavity is arranged at the other end in the outer sleeve body; a first taper sleeve and a second taper sleeve which are correspondingly matched with the two ends of the elastic sleeve are arranged in the small end cavity; the outer sleeve body located on the side where the second taper sleeve is located is provided with the locking sleeve in a matched mode, the second taper sleeve is pushed to slide in the cavity of the small end along with the pushing of the locking sleeve, the elastic sleeve is made to bear pressure, the effect that the inner diameter is reduced is achieved, and the clamping action on the first circumference and the second circumference of the drill bit is completed.
And a guide structure for limiting the rotation of the second taper sleeve is arranged between the outer sleeve body and the second taper sleeve.
The guide structure adopts a sliding pin structure, the sliding pin structure comprises a pin hole machined in the outer sleeve body, the pin hole penetrates through the small-end cavity, a limiting pin is installed at the position of the pin hole, and the end of the limiting pin is in sliding fit with a limiting groove in the outer wall of the second taper sleeve.
The guide structure adopts a jackscrew structure, the jackscrew structure comprises a threaded hole machined in the outer sleeve body, the threaded hole penetrates through the small-end cavity, a jackscrew is installed at the position of the threaded hole, and the end of the jackscrew and the limiting groove in the outer wall of the second taper sleeve form sliding fit.
A first inner ring body is arranged between the large-end cavity and the small-end cavity of the outer sleeve body, the large end face of the first inner ring body is in contact positioning with the drill bit end face of the drill bit, and the small end face of the first inner ring body is in contact positioning with the end face of the first taper sleeve.
The elastic sleeve comprises a central sleeve, and a first conical end and a second conical end are symmetrically arranged at two ends of the central sleeve;
the first conical end and the first taper sleeve form a wedge-shaped surface fit; the second conical end and the second conical sleeve form a wedge-shaped surface fit;
a plurality of first open grooves are processed on the first conical end and the central sleeve in a penetrating way; a plurality of second open slots are formed in the second conical end and the central sleeve in a penetrating mode; the first open grooves and the second open grooves are uniformly distributed and staggered.
And the tail ends of the first open slot and the second open slot are provided with crack-stopping holes.
The inside processing of lock sleeve has and is used for the second inner ring body with second taper sleeve matched with, has processed the internal thread in the inside of lock sleeve, and the internal thread constitutes screw-thread fit with the external screw thread of processing on the cover body.
The excircle of the locking sleeve is provided with blind holes which are arranged in the radial direction.
The locking sleeve is sleeved on the side of the small-end cavity of the outer sleeve in a sliding fit mode, and is pushed to advance along the axis direction of the outer sleeve in a hydraulic, pneumatic or electric mode.
The utility model discloses there is following beneficial effect:
1. through adopting the utility model discloses a quick clamping location of high accuracy to the drill bit can be realized to the frock, guarantees in its follow-up hole course of working with the axiality of excircle, and then improves machining precision and efficiency, guarantees the drill bit quality.
2. The guide structure ensures that the second taper sleeve can only axially move along the axial lead of the outer sleeve body by avoiding the rotary motion in the process of screwing the locking sleeve into the propelling direction.
3. Through the wedge surface matching of the conical end, the first taper sleeve, the second taper sleeve and the elastic sleeve can be guaranteed to be reliably locked and fixed with the drill bit under the action of clamping force.
4. Through the thread matching, the second taper sleeve is pushed to jack under the precession action of the locking sleeve.
5. Through foretell blind hole be convenient for adopt spanner instrument to press from both sides tight fixedly to the lock sleeve, and then realize its precession and dismantle.
6. Through the sliding fit between the locking sleeve and the outer sleeve body, the locking of the elastic sleeve is realized by means of hydraulic, pneumatic or electric propulsion.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a main sectional view of the utility model in the using process.
Fig. 2 is a main sectional view of a first outer casing of the present invention.
Fig. 3 is a front cross-sectional view of a second outer casing according to the present invention.
Fig. 4 is a three-dimensional view of a second taper sleeve of the present invention.
Fig. 5 is a main sectional view of the locking sleeve of the present invention.
Fig. 6 is a three-dimensional view of the elastic sleeve of the present invention.
Wherein: the device comprises an outer sleeve body 1, a first taper sleeve 2, an elastic sleeve 3, a limiting pin 4, a limiting groove 5, a second taper sleeve 6, a locking sleeve 7 and a drill bit 8;
a large end cavity 101, a first inner ring 102, a small end cavity 103, a pin hole 104, an external thread 105 and a threaded hole 106;
a first tapered end 301, a first opening groove 302, a center sleeve 303, a second tapered end 304, a second opening groove 305 and a crack-stopping hole 306;
an internal thread 701, a second inner ring 702 and a blind hole 703;
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1-6, a tool for a rock drill bit comprises an outer sleeve body 1, wherein a large-end cavity 101 is arranged at one end of the interior of the outer sleeve body 1, and a small-end cavity 103 is arranged at the other end of the interior of the outer sleeve body 1; a first taper sleeve 2 and a second taper sleeve 6 which are correspondingly matched with the two ends of the elastic sleeve 3 are arranged in the small-end cavity 103; the outer sleeve 1 on the side of the second taper sleeve 6 is provided with the locking sleeve 7 in a matching manner, and the second taper sleeve 6 is pushed to slide in the small-end cavity 103 along with the pushing of the locking sleeve 7, so that the elastic sleeve 3 bears pressure, the effect of reducing the inner diameter is achieved, and the clamping action on the first circumference 802 and the second circumference 803 of the drill bit 8 is completed. Through adopting foretell frock can realize the quick clamping location of high accuracy to the drill bit, guarantee the axiality with the excircle in its follow-up hole course of working, and then improve machining precision and efficiency, guarantee drill bit quality. In the specific clamping process, the drill bit 8 is positioned and sleeved inside the outer sleeve body 1, and then the first taper sleeve 2 and the second taper sleeve 6 are matched with the wedge surface between the elastic sleeve 3, so that the first circumference 802 and the second circumference 803 of the drill bit are effectively clamped and positioned, and reliable matching between a central inner hole and an outer circle of the drill bit 8 is guaranteed in the inner hole machining process.
Further, a guide structure for limiting the rotation of the second taper sleeve 6 is arranged between the outer sleeve 1 and the second taper sleeve 6. The guiding structure ensures that the second taper sleeve 6 can only axially move along the axial lead of the outer sleeve 1 by avoiding the rotary motion in the screwing and propelling process of the locking sleeve 7.
Furthermore, the guide structure adopts a sliding pin structure, the sliding pin structure comprises a pin hole 104 processed on the outer sleeve body 1, the pin hole 104 penetrates through the small-end cavity 103, the position of the pin hole 104 is provided with a limit pin 4, and the end of the limit pin 4 is in sliding fit with the limit groove 5 on the outer wall of the second taper sleeve 6. Through the matching between the limiting pin 4 and the limiting groove 5, the second taper sleeve 6 can only slide along the axial direction of the small end cavity 103.
Furthermore, the guide structure adopts a jackscrew structure, the jackscrew structure comprises a threaded hole 106 processed on the outer sleeve body 1, the threaded hole 106 penetrates through the small-end cavity 103, a jackscrew is installed at the position of the threaded hole 106, and the end of the jackscrew and the limiting groove 5 on the outer wall of the second taper sleeve 6 form sliding fit. The second taper sleeve 6 can only slide axially along the small end cavity 103 by the jackscrew structure.
Further, a first inner ring 102 is arranged between the large-end cavity 101 and the small-end cavity 103 of the outer sleeve 1, the large end face of the first inner ring 102 is in contact with the bit end face 801 of the bit 8 for positioning, and the small end face of the first inner ring 102 is in contact with the end face of the first taper sleeve 2 for positioning. The outer sleeve 1 can realize the axial positioning of the drill bit 8, and the circumferential positioning of the drill bit 8 can be realized by the cooperation of the first taper sleeve 2, the second taper sleeve 6 and the elastic sleeve 3.
Further, the elastic sleeve 3 comprises a central sleeve 303, and a first tapered end 301 and a second tapered end 304 are symmetrically arranged at two ends of the central sleeve 303; the first conical end 301 and the first taper sleeve 2 form a wedge surface fit; the second tapered end 304 forms a wedge-face fit with the second collar 6. Through the wedge surface matching of the conical ends, the first taper sleeve 2, the second taper sleeve 6 and the elastic sleeve 3 can be guaranteed to be capable of reliably locking and fixing the drill bit 8 under the action of clamping force.
Furthermore, a plurality of first open grooves 302 are formed in the first conical end 301 and the central sleeve 303 in a penetrating manner; a plurality of second open grooves 305 are formed in the second conical end 304 and the central sleeve 303 in a penetrating manner; the first opening grooves 302 and the second opening grooves 305 are arranged in a uniformly staggered manner. The first opening groove 302 and the second opening groove 305 ensure that the first tapered end 301 and the second tapered end 304 are shrunk under the action of the first taper sleeve 2 and the second taper sleeve 6, and further, the first circumference 802 and the second circumference 803 of the drill bit 8 are locked and fixed.
Further, the ends of the first opening groove 302 and the second opening groove 305 are provided with a crack stop hole 306. The risk of the first opening groove 302 and the second opening groove 305 splitting at the end portions is effectively prevented by the above-mentioned crack stop hole 306.
Furthermore, a second inner ring 702 for matching with the second taper sleeve 6 is processed inside the locking sleeve 7, an internal thread 701 is processed inside the locking sleeve 7, and the internal thread 701 forms a threaded fit with the external thread 105 processed on the outer sleeve body 1. Through the thread matching, the second taper sleeve 6 is pushed to jack under the screwing action of the locking sleeve 7.
Furthermore, a blind hole 703 arranged in the radial direction is processed on the outer circle of the locking sleeve 7. Through the blind hole 703, the locking sleeve 7 can be clamped and fixed by a wrench tool, and further can be screwed in.
Further, the locking sleeve 7 is sleeved on the side of the small-end cavity 103 of the outer sleeve 1 in a sliding fit manner, and is pushed to advance along the axial direction of the outer sleeve 1 in a hydraulic, pneumatic or electric manner.
The utility model discloses a concrete assembly application method:
during operation, a tail handle of the drill bit 8 is sleeved in the large-end cavity 101 of the outer sleeve body 1 until the end face 801 of the drill bit is attached to the inner end face of the first inner ring body 102, and axial direction positioning constraint of the drill bit 8 is completed; then, the locking sleeve 7 is screwed to cause the second taper sleeve 6 to move leftwards, so that the first taper end 301 and the second taper end 304 of the elastic sleeve 3 bear pressure and reduce the inner diameter, and the clamping action on the first circumference 802 and the second circumference 803 is completed; on the contrary, as the thread on the locking sleeve 7 is screwed out, the clamping is finished and then the loosening action is finished, and in the working process, the chuck of the machine tool is not directly clamped on the irregular shape of the drill bit any more, so that the clamping is convenient; the first circumference 802 and the second circumference 803 of the drill bit are clamped by the elastic sleeve 3, so that the coaxiality of the central hole and the circumferential surface of the drill bit to be processed can be effectively ensured.
Claims (10)
1. The utility model provides a frock for rock drill bit which characterized in that: the outer sleeve comprises an outer sleeve body (1), wherein a large-end cavity (101) is arranged at one end of the interior of the outer sleeve body (1), and a small-end cavity (103) is arranged at the other end of the interior of the outer sleeve body; a first taper sleeve (2) and a second taper sleeve (6) which are correspondingly matched with the two ends of the elastic sleeve (3) are arranged in the small end cavity (103); the outer sleeve body (1) located on the side where the second taper sleeve (6) is located is provided with the locking sleeve (7) in a matched mode, the second taper sleeve (6) is pushed to slide in the small end cavity (103) along with the pushing of the locking sleeve (7), the elastic sleeve (3) is enabled to bear pressure, the effect that the inner diameter is reduced is achieved, and the clamping action on the first circumference (802) and the second circumference (803) of the drill bit (8) is completed.
2. The tool for the rock drill bit according to claim 1, characterized in that: a guide structure used for limiting the rotation of the second taper sleeve (6) is arranged between the outer sleeve body (1) and the second taper sleeve (6).
3. The tool for the rock drill bit according to claim 2, characterized in that: the guide structure adopts a sliding pin structure, the sliding pin structure comprises a pin hole (104) machined in the outer sleeve body (1), the pin hole (104) penetrates through the small-end cavity body (103), the limiting pin (4) is installed at the position where the pin hole (104) is located, and the end of the limiting pin (4) and the limiting groove (5) in the outer wall of the second taper sleeve (6) form sliding fit.
4. The tool for the rock drill bit according to claim 2, characterized in that: the guide structure adopts a jackscrew structure, the jackscrew structure comprises a threaded hole (106) machined in the outer sleeve body (1), the threaded hole (106) penetrates through the small-end cavity (103), the jackscrew is installed at the position of the threaded hole (106), and the end of the jackscrew and the limiting groove (5) on the outer wall of the second taper sleeve (6) form sliding fit.
5. The tool for the rock drill bit as claimed in claim 1, wherein: a first inner ring (102) is arranged between the large-end cavity (101) and the small-end cavity (103) of the outer sleeve (1), the large end face of the first inner ring (102) is in contact positioning with the drill bit end face (801) of the drill bit (8), and the small end face of the first inner ring (102) is in contact positioning with the end face of the first taper sleeve (2).
6. The tool for the rock drill bit according to claim 1, characterized in that: the elastic sleeve (3) comprises a central sleeve (303), and a first conical end (301) and a second conical end (304) are symmetrically arranged at two ends of the central sleeve (303);
the first conical end (301) and the first taper sleeve (2) form a wedge-shaped surface fit; the second conical end (304) and the second taper sleeve (6) form wedge surface fit;
a plurality of first open grooves (302) are processed on the first conical end (301) and the central sleeve (303) in a penetrating way; a plurality of second open grooves (305) are processed on the second conical end (304) and the central sleeve (303) in a penetrating way; the first open grooves (302) and the second open grooves (305) are arranged in an evenly-distributed and staggered mode.
7. The tool for the rock drill bit according to claim 6, characterized in that: the tail ends of the first opening groove (302) and the second opening groove (305) are provided with crack-stopping holes (306).
8. The tool for the rock drill bit according to claim 1, characterized in that: the inner processing of lock sleeve (7) has and is used for with second cone cover (6) matched with second internal ring body (702), has internal thread (701) in the inner processing of lock sleeve (7), and internal thread (701) constitute screw-thread fit with external screw thread (105) of processing on the outer cover body (1).
9. A tool for a rock drill bit according to claim 1 or 8, characterized in that: and blind holes (703) which are arranged in the radial direction are processed on the excircle of the locking sleeve (7).
10. The tool for the rock drill bit according to claim 1, characterized in that: the locking sleeve (7) is sleeved on the side of the small-end cavity (103) of the outer sleeve body (1) in a sliding fit mode, and is pushed to advance along the axis direction of the outer sleeve body (1) in a hydraulic, pneumatic or electric mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220718022.1U CN217317015U (en) | 2022-03-30 | 2022-03-30 | Tool for rock drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220718022.1U CN217317015U (en) | 2022-03-30 | 2022-03-30 | Tool for rock drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217317015U true CN217317015U (en) | 2022-08-30 |
Family
ID=83003756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220718022.1U Active CN217317015U (en) | 2022-03-30 | 2022-03-30 | Tool for rock drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217317015U (en) |
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2022
- 2022-03-30 CN CN202220718022.1U patent/CN217317015U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A tool for drilling rock bits Granted publication date: 20220830 Pledgee: Agricultural Bank of China Limited Three Gorges Gezhouba Branch Pledgor: Hubei Wuhuan Ouke Manufacturing Technology Co.,Ltd. Registration number: Y2024980020762 |