CN223749068U - Positioning mechanism for spline shaft in blind hole - Google Patents
Positioning mechanism for spline shaft in blind holeInfo
- Publication number
- CN223749068U CN223749068U CN202423138707.7U CN202423138707U CN223749068U CN 223749068 U CN223749068 U CN 223749068U CN 202423138707 U CN202423138707 U CN 202423138707U CN 223749068 U CN223749068 U CN 223749068U
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- CN
- China
- Prior art keywords
- positioning
- shaft
- positioning sleeve
- blind hole
- workpiece
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- 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.)
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Abstract
本实用新型提供了一种盲孔内花键轴定位机构，底板上安装定位套筒，定位套筒底部中心处安装定位轴，定位轴和定位套筒之间为用于放置工件的间隙，底板上位于定位套筒外侧对称安装两个双头螺栓，两个双头螺栓上端相对安装勾头压板。本实用新型的盲孔内花键轴定位机构，采用工件轴径和端面定位，内花键齿粗定位防止加工转动、同时也避免外薄壁轴径压紧变形，勾头压板夹紧。通过勾头压板旋转更换工件方便快捷加工角度准确，精度高，效率高。
This invention provides a blind hole internal spline shaft positioning mechanism. A positioning sleeve is installed on the base plate, and a positioning shaft is installed at the center of the bottom of the positioning sleeve. A gap exists between the positioning shaft and the positioning sleeve for placing the workpiece. Two double-ended bolts are symmetrically installed on the base plate outside the positioning sleeve, and hook-head clamping plates are installed opposite each other on the upper ends of the two double-ended bolts. This blind hole internal spline shaft positioning mechanism uses workpiece shaft diameter and end face positioning. The coarse positioning of the internal spline teeth prevents rotation during machining and also avoids deformation of the thin-walled shaft diameter during clamping. The hook-head clamping plates provide clamping. Changing the workpiece by rotating the hook-head clamping plates is convenient, quick, and accurate, resulting in high precision and efficiency.
Description
Technical Field
The utility model relates to the technical field of clamps, in particular to a clamp for blind hole shaft production.
Background
The spline shaft is a key part of the axle portion of the automobile. The blind hole spline shaft is a thin-walled part at the spline position, a workpiece is clamped by a chuck clamping shaft diameter mode during machining, the workpiece is positioned and clamped during drilling, deformation is easy to occur, and the angle between the hole and the spline is not easy to guarantee.
Disclosure of utility model
In order to solve the problems of clamping in a traditional chuck clamping shaft diameter mode, the utility model provides a blind hole internal spline shaft positioning mechanism.
The utility model adopts the technical scheme that a positioning mechanism of a blind hole internal spline shaft is adopted, a positioning sleeve 6 is arranged on a bottom plate 8, a positioning shaft 9 is arranged at the center of the bottom of the positioning sleeve 6, a gap for placing a workpiece 11 is arranged between the positioning shaft 9 and the positioning sleeve 6, two stud bolts 7 are symmetrically arranged on the bottom plate 8 and positioned outside the positioning sleeve 6, and the upper ends of the two stud bolts 7 are oppositely provided with a hook head pressing plate 1.
And the supports 4 for supporting the hook head pressing plate 1 are respectively arranged on the bottom plate 8 and positioned outside the stud bolts 7.
The spring 3 is arranged between the hook pressing plate 1 and the edge of the thread bottom of the stud 7 on the stud 7, the washer 2 is arranged between the hook pressing plate 1 and the spring 3 on the stud 7, and the through nut 12 is arranged above the hook pressing plate 1 on the stud 7.
The outer edge of the positioning sleeve 6 is arranged on the bottom plate 8 through the positioning sleeve fixing screw 5, and the positioning shaft 9 is fixedly connected with the inner edge of the positioning sleeve 6 through the positioning shaft fixing screw 10.
The blind hole internal spline shaft positioning mechanism adopts workpiece shaft diameter and end surface positioning, internal spline tooth coarse positioning prevents processing rotation, and simultaneously prevents the outer thin wall shaft diameter from compressing and deforming, and a hook head pressing plate is clamped. The workpiece is conveniently and rapidly replaced through the hook pressing plate in a rotating mode, the machining angle is accurate, the precision is high, and the efficiency is high.
Drawings
FIG. 1 is a front cross-sectional view of a blind hole internal spline shaft positioning mechanism of the present utility model.
In the figure, 1, a hook head pressing plate, 2, a gasket, 3, a spring, 4, a support column, 5, a positioning sleeve fixing screw, 6, a positioning sleeve, 7, a stud, 8, a bottom plate, 9, a positioning shaft, 10, a positioning shaft fixing screw, 11, a workpiece, 12 and a nut.
Detailed Description
As shown in FIG. 1, the outer edge of a positioning sleeve 6 is arranged on a bottom plate 8 through a positioning sleeve fixing screw 5, and a positioning shaft 9 is fixedly connected with the inner edge of the positioning sleeve 6 through a positioning shaft fixing screw 10. The gap for placing the workpiece 11 is arranged between the positioning shaft 9 and the positioning sleeve 6, two stud bolts 7 are symmetrically arranged on the outer side of the positioning sleeve 6 on the bottom plate 8, a spring 3 is arranged between the hook pressing plate 1 and the thread bottom edge of the stud bolts 7, a gasket 2 is arranged between the hook pressing plate 1 and the spring 3 on the stud bolts 7, and a through nut 12 is arranged above the hook pressing plate 1 on the stud bolts 7. The upper ends of the two stud bolts 7 are oppositely provided with the hook head pressing plate 1. The supports 4 for supporting the hook head pressing plate 1 are respectively arranged on the outer sides of the stud bolts 7 on the bottom plate 8.
The positioning shaft 9 is arranged on the inner edge of the positioning sleeve 6 through the positioning shaft fixing bolt 10, so that the shaft diameter of the spline shaft is coarsely positioned, the angle of a machining hole is guaranteed to be consistent, the movement is prevented, the positioning sleeve fixing bolt 5 is assembled on the bottom plate 8, the support column 4 is arranged on the bottom plate 8 in a screw fastening mode, the stud 7 is fixed on the bottom plate 8 in a screw fastening mode at the lower end, the hook pressing plate 1 is fixed at the upper end through the washer 2, the spring 3 and the nut 12, and the upper end of a workpiece is pressed through the hook pressing plate 1. After assembly, the mechanism is mounted on a drilling machine.
During operation, the workpiece 11 (spline blind hole shaft) is installed, the shaft diameter and the end face of the workpiece 11 are used for positioning, the internal spline is used for rough positioning, the hook head pressing plate 1 is used for pressing the shaft end part of the workpiece 11 shaft, the machine tool is started to drill a hinge shaft shoulder hole, after the workpiece is machined, the hook head pressing plate 1 is loosened again, the workpiece 11 is taken down, and after another workpiece is installed and pressed, the next workpiece can be machined.
Claims (4)
1. The positioning mechanism for the blind hole internal spline shaft is characterized in that a positioning sleeve (6) is arranged on a bottom plate (8), a positioning shaft (9) is arranged at the center of the bottom of the positioning sleeve (6), a gap for placing a workpiece (11) is formed between the positioning shaft (9) and the positioning sleeve (6), two stud bolts (7) are symmetrically arranged on the bottom plate (8) and positioned on the outer side of the positioning sleeve (6), and a hook head pressing plate (1) is arranged at the upper ends of the two stud bolts (7) oppositely.
2. The blind hole internal spline shaft positioning mechanism according to claim 1, wherein the supports (4) for supporting the hook head pressing plate (1) are respectively arranged on the outer sides of the stud bolts (7) on the bottom plate (8).
3. The blind hole internal spline shaft positioning mechanism according to claim 1, wherein a spring (3) is arranged between the hook head pressing plate (1) and the threaded bottom edge of the stud bolt (7) on the stud bolt (7), a gasket (2) is arranged between the hook head pressing plate (1) and the spring (3) on the stud bolt (7), and a through nut (12) is arranged above the hook head pressing plate (1) on the stud bolt (7).
4. The blind hole internal spline shaft positioning mechanism according to claim 1, wherein the outer edge of the positioning sleeve (6) is arranged on the bottom plate (8) through a positioning sleeve fixing screw (5), and the positioning shaft (9) is fixedly connected with the inner edge of the positioning sleeve (6) through a positioning shaft fixing screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423138707.7U CN223749068U (en) | 2024-12-19 | 2024-12-19 | Positioning mechanism for spline shaft in blind hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423138707.7U CN223749068U (en) | 2024-12-19 | 2024-12-19 | Positioning mechanism for spline shaft in blind hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223749068U true CN223749068U (en) | 2026-01-02 |
Family
ID=98206873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423138707.7U Active CN223749068U (en) | 2024-12-19 | 2024-12-19 | Positioning mechanism for spline shaft in blind hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223749068U (en) |
-
2024
- 2024-12-19 CN CN202423138707.7U patent/CN223749068U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |