CN211360702U - Clamping device for improving coaxiality of finish turning excircle and inner hole of threaded drill bit - Google Patents
Clamping device for improving coaxiality of finish turning excircle and inner hole of threaded drill bit Download PDFInfo
- Publication number
- CN211360702U CN211360702U CN201922439066.1U CN201922439066U CN211360702U CN 211360702 U CN211360702 U CN 211360702U CN 201922439066 U CN201922439066 U CN 201922439066U CN 211360702 U CN211360702 U CN 211360702U
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- nut
- revolution
- mandrel
- solid
- clamping device
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Abstract
The utility model relates to an improve clamping device of screw thread bore bit finish turning excircle and hole axiality, including the solid of revolution and the lead screw that runs through the solid of revolution perpendicularly, the cover is equipped with nut one on being located one section lead screw in the solid of revolution, and one of them one side of nut is the inclined plane, is close to nut inclined plane one side and is equipped with the mandrel that can expand, and the mandrel that can expand sets up along the axis direction of the solid of revolution, and the one end of mandrel that can expand is passed through the spring and is connected with the inclined plane one side contact of nut one, and the other pot head of. The utility model provides an improve clamping device of screw thread bore bit finish turning excircle and hole axiality adopts the mandrel that can expand to replace traditional centering shaft to fix a position the work piece, reduces the fit clearance of mandrel and work piece hole, and the clamping is firm, improves screw thread bore bit finish turning excircle and hole axiality.
Description
Technical Field
The utility model relates to an anchor clamps technical field especially relates to improve clamping device of screw thread bore bit finish turning excircle and hole axiality.
Background
The existing threaded drill bit is various in variety, a positioning mandrel is generally adopted to position an inner hole of a workpiece, the existing positioning mandrel is solid and fixed, a gap is formed between the existing positioning mandrel and the inner hole of the workpiece, the coaxiality of an outer circle and the inner hole of the machined workpiece is +/-0.20 mm, and the coaxiality requirement of the inner circle and the outer circle of the workpiece cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned not enough of prior art, the utility model provides an improve clamping device of screw thread bore bit finish turning excircle and hole axiality, solved the technical problem that the interior excircle axiality of current screw thread bore bit is low.
The utility model discloses a realize through following technical scheme:
improve clamping device of screw thread bore bit finish turning excircle and hole axiality, include the solid of revolution and run through perpendicularly the lead screw of solid of revolution, an outside end of lead screw is connected with the solid of revolution through round nut two, is located the cover is equipped with nut one on one section lead screw in the solid of revolution, one of them one side of nut is the inclined plane, is close to nut inclined plane one side is equipped with the mandrel that can expand, the mandrel is followed the axis direction setting of solid of revolution, the one end of mandrel that can expand is passed through the spring and is connected with the inclined plane one side contact of nut one, the other pot head of mandrel that can expand has the cover that expands.
Further, the screw rod is rotatably connected with the revolving body through a bearing.
Furthermore, one end of the spring is connected with the conical plug at one end of the expandable mandrel, and a circular protrusion is arranged at the other end of the spring and is in contact with the inclined surface of the first nut.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides an improve clamping device of screw thread bore bit finish turning excircle and hole axiality adopts the mandrel that can expand to replace traditional solid fixed mandrel to fix a position the work piece, reduces the fit clearance of dabber and work piece hole, and the clamping is more firm, improves screw thread bore bit finish turning excircle and hole axiality.
Drawings
FIG. 1 is a front sectional view of a clamping device for improving the coaxiality of a finish-turned outer circle and an inner hole of a threaded drill bit according to an embodiment of the present invention;
fig. 2 is a top view cross-sectional view of the clamping device for improving the coaxiality of the finish turning excircle and the inner hole of the threaded drill bit.
In the figure:
1. a revolving body; 2. a first nut; 3. a screw rod; 4. a spring; 5. a conical plug; 6. an expandable mandrel; 7. a workpiece; 8. a round nut II; 9. and a bearing.
Detailed Description
The following examples are presented to illustrate certain embodiments of the invention and should not be construed as limiting the scope of the invention. The present disclosure may be modified from materials, methods, and reaction conditions at the same time, and all such modifications are intended to be within the spirit and scope of the present invention.
The clamping device for improving the coaxiality of the outer circle and the inner hole of the threaded drill bit finish turning shown in the figures 1-2 comprises a revolving body 1 and a screw rod 3 vertically penetrating through the revolving body 1, one outer side end of the screw rod 3 is connected with the revolving body 1 through a round nut II 8, a nut I2 is sleeved on one section of the screw rod 3 located in the revolving body 1, one side of the nut I2 is an inclined plane, an expandable mandrel 6 is arranged close to one side of the inclined plane of the nut I2, the expandable mandrel 6 is arranged along the axial direction of the revolving body 1, a conical plug 5 at one end of the expandable mandrel 6 is connected with one end of a spring, a round bulge at the other end of the spring 4 is in contact with the inclined plane of the nut I2 and is in contact connection with one side of the inclined plane of the nut I2 through the spring 4, and an.
The screw rod 3 is rotatably connected with the revolving body 1 through a bearing 9.
When the device is used, the workpiece 7 is firstly sleeved outside the expansion sleeve of the expandable mandrel 6, the round nut II is screwed/loosened, the expandable mandrel axially and outwards supports the expansion sleeve through the extrusion of the lead screw to the spring, so that the expansion sleeve can be well contacted and pressed with the workpiece 7, and the subsequent processing of the workpiece is facilitated. The clamping device can well position and clamp the threaded drill bit, the coaxiality of the inner circle and the outer circle of a workpiece is high, and the processing quality and the production efficiency of the workpiece are improved.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (3)
1. Improve clamping device of screw thread bore bit finish turning excircle and hole axiality, its characterized in that, including solid of revolution (1) and run through perpendicularly lead screw (3) of solid of revolution (1), an outside end of lead screw (3) is connected with solid of revolution (1) through round nut two (8), is located the cover is equipped with nut one (2) on one section lead screw (3) in solid of revolution (1), wherein one side of nut one (2) is the inclined plane, is close to nut one (2) inclined plane one side is equipped with expansible mandrel (6), expansible mandrel (6) are followed the axis direction setting of solid of revolution (1), the one end of expansible mandrel (6) is passed through spring (4) and is connected with the inclined plane one side contact of nut one (2), the other pot head of expansible mandrel (6) has the cover that expands.
2. The clamping device for improving the coaxiality of the finish-turned outer circle and the inner hole of the threaded drill bit according to claim 1, wherein the screw rod (3) is rotatably connected with the rotary body (1) through a bearing (9).
3. The clamping device for improving the coaxiality of the finish-turned outer circle and the finish-turned inner hole of the threaded drill bit as claimed in claim 1, wherein one end of the spring (4) is connected with the conical plug (5) at one end of the expandable mandrel (6), the other end of the spring (4) is provided with a circular protrusion, and the circular protrusion is in contact with the inclined surface of the first nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922439066.1U CN211360702U (en) | 2019-12-30 | 2019-12-30 | Clamping device for improving coaxiality of finish turning excircle and inner hole of threaded drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922439066.1U CN211360702U (en) | 2019-12-30 | 2019-12-30 | Clamping device for improving coaxiality of finish turning excircle and inner hole of threaded drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211360702U true CN211360702U (en) | 2020-08-28 |
Family
ID=72163567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922439066.1U Expired - Fee Related CN211360702U (en) | 2019-12-30 | 2019-12-30 | Clamping device for improving coaxiality of finish turning excircle and inner hole of threaded drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211360702U (en) |
-
2019
- 2019-12-30 CN CN201922439066.1U patent/CN211360702U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200828 Termination date: 20211230 |