CN211343922U - Key-free straight gear - Google Patents
Key-free straight gear Download PDFInfo
- Publication number
- CN211343922U CN211343922U CN201921352674.2U CN201921352674U CN211343922U CN 211343922 U CN211343922 U CN 211343922U CN 201921352674 U CN201921352674 U CN 201921352674U CN 211343922 U CN211343922 U CN 211343922U
- Authority
- CN
- China
- Prior art keywords
- straight
- key
- gear body
- sleeve
- expansion sleeve
- 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.)
- Active
Links
Images
Landscapes
- Gears, Cams (AREA)
Abstract
The utility model discloses a key-free straight gear, including the straight-teeth gear body, there is a CT cover that rises one side of straight-teeth gear body through screw fixed mounting, and the CT cover middle part that rises penetrates in the axle center of straight-teeth gear body. The utility model is suitable for larger aperture deviation, and simultaneously, the concentricity is ensured; fast and firm clamping; the connection with the existing machine structure is convenient; fixing the workpiece by means of a rear baffle; a positive clamping and releasing device; where feasible, a single taper provides maximum support; the replaceable expansion sleeve meets the requirements of different workpiece sizes; a controllable reference plane. The processing precision is improved (the concentricity can reach 0.003mm TIR); the production cost is reduced; the yield is increased; a reduction operation step; the times of card loading, card withdrawing and demoulding are reduced; and the rejection rate is reduced.
Description
Technical Field
The utility model relates to a gear, in particular to exempt from key straight-teeth gear.
Background
At present, a straight gear is fixedly connected by a key generally in a pre-tightening supporting and fixing mode, the key needs to be installed by processing a groove on the side wall of the axis of the straight gear, and processing is difficult. And under the condition of low concentricity, a spur gear is difficult to fixedly install.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a key straight-teeth gear exempts from to the above-mentioned defect of prior art.
For solving the above-mentioned defect of prior art, the utility model provides a technical scheme is: the key-free straight gear comprises a straight gear body, wherein a CT expansion sleeve is fixedly mounted on one side of the straight gear body through a screw, and the middle of the CT expansion sleeve penetrates into the axis of the straight gear body.
As an improvement of the utility model, the middle part of the CT expansion sleeve is provided with a sleeve body, the interval is equipped with a plurality of gaps on the sleeve body, and a spacer is arranged between every two gaps.
As an improvement of the utility model, the cover body one end of the CT expansion sleeve is gradually reduced to the other end diameter, the notch is located the big end of the cover body diameter of the CT expansion sleeve.
As an improvement of the utility model, the CT expands and overlaps the big one end edge of diameter and extends and have fixed ear, be equipped with the through-hole on the fixed ear, the screw is followed the through-hole penetrate with straight-teeth gear body spiro union.
As an improvement of the key-free straight gear of the utility model, the small end of the sleeve body diameter of the CT expansion sleeve penetrates into the axle center of the straight gear body.
Compared with the prior art, the utility model has the advantages that: the utility model discloses a CT cover that rises, CT cover that rises pass through the screw fastening on the straight-teeth gear body, and the little one end of the cover body penetrates to the axle center of straight-teeth gear body in, can play the effect of pretension, and traditional straight-teeth gear adopts the mode that the key comes to fix to need process out a keyway at straight-teeth gear axle center inside wall, and the processing cost is high. The utility model is suitable for larger aperture deviation, and simultaneously, the concentricity is ensured; fast and firm clamping; the connection with the existing machine structure is convenient; fixing the workpiece by means of a rear baffle; a positive clamping and releasing device; where feasible, a single taper provides maximum support; the replaceable expansion sleeve meets the requirements of different workpiece sizes; a controllable reference plane. The processing precision is improved (the concentricity can reach 0.003mm TIR); the production cost is reduced; the yield is increased; a reduction operation step; the times of card loading, card withdrawing and demoulding are reduced; and the rejection rate is reduced.
Drawings
The invention and its advantageous technical effects are described in further detail below with reference to the accompanying drawings and embodiments, in which:
fig. 1 is a sectional view of the present invention.
Fig. 2 is a cross-sectional view of the CT expansion sleeve of the utility model.
Fig. 3 is a cross-sectional view of the spur gear body of the present invention.
Reference symbol names: 1. a straight gear body 2, a screw 3, a CT expansion sleeve 4, an axle center 5, a sleeve body 6, a fixing lug 7 and a through hole.
Detailed Description
The invention will be further described below with reference to the drawings and specific examples, but the embodiments of the invention are not limited thereto.
As shown in fig. 1, 2 and 3, a key-free spur gear comprises a spur gear body 1, a CT expansion sleeve 3 is fixedly installed on one side of the spur gear body 1 through a screw 2, and the middle of the CT expansion sleeve 3 penetrates into an axis 4 of the spur gear body 1.
Preferably, the middle part of the CT expansion sleeve 3 is provided with a sleeve body 5, a plurality of gaps are arranged on the sleeve body 5 at intervals, and a spacer is arranged between every two gaps.
Preferably, the diameter of the sleeve body of the CT expansion sleeve 3 is gradually reduced from one end to the other end, and the gap is positioned at the end, with the larger diameter, of the sleeve body 5 of the CT expansion sleeve 3.
Preferably, a fixing lug 6 extends from the edge of one end of the CT expansion sleeve 3 with a large diameter, a through hole 7 is formed in the fixing lug 6, and the screw 2 penetrates through the through hole 7 to be in threaded connection with the spur gear body 1.
Preferably, the end of the CT expansion sleeve 3 with the smaller diameter of the sleeve body 5 penetrates into the axial center 4 of the spur gear body 1.
The utility model discloses a CT rises and overlaps 3, CT rises and overlaps 3 and fastens on straight-teeth gear body 1 through screw 2, and the little one end of the cover body 5 penetrates to straight-teeth gear body 1's axle center 4 in, can play the effect of pretension, and traditional straight-teeth gear adopts the mode that the key comes to fix to need process out a keyway at straight-teeth gear axle center inside wall, and the processing cost is high. The utility model is suitable for larger aperture deviation, and simultaneously, the concentricity is ensured; fast and firm clamping; the connection with the existing machine structure is convenient; fixing the workpiece by means of a rear baffle; a positive clamping and releasing device; where feasible, a single taper provides maximum support; the replaceable expansion sleeve meets the requirements of different workpiece sizes; a controllable reference plane. The processing precision is improved (the concentricity can reach 0.003mm TIR); the production cost is reduced; the yield is increased; a reduction operation step; the times of card loading, card withdrawing and demoulding are reduced; and the rejection rate is reduced.
CT (a Craftsman Tools Kraffman expansion mandrel), the expansion mandrel has stronger universality and higher precision than a fixed mandrel and similar tool fixtures, can be used for most of machining and inspection procedures, and is also commonly used in the operation processes of turning, milling, gear machining, grinding, vertical drilling, assembling and inspection.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and structures of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The key-free straight gear comprises a straight gear body and is characterized in that a CT expansion sleeve is fixedly mounted on one side of the straight gear body through a screw, and the middle of the CT expansion sleeve penetrates into the axis center of the straight gear body.
2. The key-free spur gear according to claim 1, wherein a sleeve body is disposed in the middle of the CT expanding sleeve, a plurality of notches are spaced on the sleeve body, and a spacer is disposed between every two notches.
3. The key-free spur gear according to claim 2, wherein the diameter of the body of the CT expanding sleeve gradually decreases from one end to the other end, and the notch is located at the end of the CT expanding sleeve with the larger diameter.
4. The key-free spur gear according to claim 3, wherein a fixing lug extends from an edge of one end of the CT expansion sleeve with a large diameter, a through hole is formed in the fixing lug, and the screw penetrates through the through hole and is in threaded connection with the spur gear body.
5. The key-free spur gear according to claim 4, wherein the end of the CT expansion sleeve with the smaller diameter penetrates into the axial center of the spur gear body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921352674.2U CN211343922U (en) | 2019-08-20 | 2019-08-20 | Key-free straight gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921352674.2U CN211343922U (en) | 2019-08-20 | 2019-08-20 | Key-free straight gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343922U true CN211343922U (en) | 2020-08-25 |
Family
ID=72105043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921352674.2U Active CN211343922U (en) | 2019-08-20 | 2019-08-20 | Key-free straight gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343922U (en) |
-
2019
- 2019-08-20 CN CN201921352674.2U patent/CN211343922U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204603909U (en) | A kind of anti-deformation device of thin-wall tube-shaped element processing | |
| CN103252515A (en) | Special fixture for processing outer circle of long-cylinder part | |
| CN204603354U (en) | Thin-walled fixture for processing excircle of barrel-shaped parts | |
| CN205342512U (en) | A anchor clamps for processing accurate thin wall sleeve part of overlength | |
| CN106736692B (en) | A kind of manufacture engine driveshaft multi-grab | |
| CN203390328U (en) | Gear shaving clamp allowing rapid replacement | |
| CN201755764U (en) | Turning processing jig for thin wall shaft sleeve | |
| CN204954442U (en) | Round platform cylinder combination thin wall tube -shape part face work anchor clamps | |
| CN201881179U (en) | Clamp device for internal stay of gear ring | |
| CN211343922U (en) | Key-free straight gear | |
| CN103350261B (en) | Gear hobbing clamp oriented by flat position of gear and installation and debugging method | |
| CN104827132A (en) | Gear clamp | |
| CN101983837A (en) | Clamp for grinding inner bores in thin-walled piece | |
| CN201872022U (en) | Fixture for grinding inner bore of thin-wall component | |
| CN203156396U (en) | Anti-bending-deformation and anti-cutting-vibration tool of lathe | |
| CN108481192A (en) | A kind of mill fixture and clamping method suitable for the long spacer of thin-walled | |
| CN202667701U (en) | Inner expansion tool for machining | |
| CN105562749A (en) | Automotive clamping method for elastic sealing backing ring | |
| CN101867264A (en) | Expansion sleeve type cast-aluminum dummy shaft | |
| CN211028418U (en) | Rapid positioning clamp for hollow shaft gear shaping | |
| CN204381939U (en) | Active synchronization wheel installing mechanism | |
| CN202097590U (en) | Clamp for preventing roundness deformation of thin-wall sleeve parts | |
| CN203061906U (en) | Installation structure for machine tool apex and apex shaft | |
| CN208584205U (en) | A kind of spray inner cavity positioning device of cone shell workpiece lathe processing | |
| CN105215478A (en) | A kind of axle class gear-hobbing clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 523000 No. 33, Taoyuan 2nd Road, village tail, Hengli Town, Dongguan City, Guangdong Province Patentee after: DONGGUAN YIHEDA AUTOMATION Co.,Ltd. Address before: 523000, Dongguan, Guangdong, Humen province Zhen Dong Dong Fang Industrial Zone Patentee before: DONGGUAN YIHEDA AUTOMATION Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |