CN210335586U - Positioning chuck for internal grinding of valve guide pipe - Google Patents
Positioning chuck for internal grinding of valve guide pipe Download PDFInfo
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- CN210335586U CN210335586U CN201921371793.2U CN201921371793U CN210335586U CN 210335586 U CN210335586 U CN 210335586U CN 201921371793 U CN201921371793 U CN 201921371793U CN 210335586 U CN210335586 U CN 210335586U
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- chuck
- positioning
- limiting rod
- valve guide
- advancing
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Abstract
The utility model discloses a positioning chuck for an internal grinding of a valve guide pipe, which comprises a chuck bottom plate and at least three positioning devices, wherein the positioning devices are fixedly arranged on the chuck bottom plate; mounting holes penetrate through the chuck base plate, all the positioning devices are uniformly arranged around the mounting holes, and all the positioning devices are positioned on the same side of the chuck base plate; the positioning device comprises a positioning column and a telescopic rod assembly, one end of the positioning column is fixed on the chuck bottom plate, the other end of the positioning column is fixed with the telescopic rod assembly, and the telescopic rod assembly is arranged along the radial direction of the mounting hole. Adopt the utility model discloses a valve guide internal grinding positioning chuck when the valve guide in the face of different models, adjusts the valve guide that each independent telescopic link assembly adapts to different models, when telescopic link assembly takes place wearing and tearing, can in time adjust, guarantees to press from both sides tight effect, has improved the machining precision.
Description
Technical Field
The utility model relates to an internal grinding positioner, concretely relates to valve guide internal grinding positioning chuck.
Background
The chuck is a mechanical device used for clamping a workpiece on a machine tool, and is a machine tool accessory for clamping and positioning the workpiece by utilizing the radial movement of movable clamping jaws uniformly distributed on a chuck body. The center of the chuck is provided with a through hole so as to pass through a workpiece or a bar stock; the back part is provided with a cylindrical or short conical structure and is connected with the end part of a main shaft of the machine tool directly or through a flange plate. Chucks are commonly used in lathes, cylindrical grinders and internal grinders, and may also be used in conjunction with various indexing devices for milling and drilling machines. For different types of valve guide pipes, different types of positioning chucks need to be replaced, and the inner grinding machine is reinstalled and adjusted, but the movable jaws of the existing three-jaw chuck are synchronously adjusted, one jaw cannot be independently adjusted, the correction is troublesome, and when the jaws are worn, the form and position tolerance of a processed part is increased, and the processing precision is reduced.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a can carry out the chuck of independent location and regulation to the axle of internal mill, it has simple and convenient, fixes a position effectual advantage.
The technical scheme is as follows:
the utility model provides a valve pipe internal grinding positioning chuck which the key lies in: the positioning device is fixedly arranged on the chuck bottom plate;
mounting holes penetrate through the chuck base plate, all the positioning devices are uniformly arranged around the mounting holes, and all the positioning devices are positioned on the same side of the chuck base plate;
the positioning device comprises a positioning column and a telescopic rod assembly, one end of the positioning column is fixed on the chuck bottom plate, the other end of the positioning column is fixed with the telescopic rod assembly, and the telescopic rod assembly is arranged along the radial direction of the mounting hole.
The technical scheme has the remarkable effects that: when facing different models of valve guide pipes, each independent telescopic rod component is adjusted to adapt to the different models of valve guide pipes.
The chuck base plate is horizontally arranged, the positioning column is arranged on the upper surface of the chuck base plate, and the telescopic rod assembly is arranged at the upper end of the positioning column;
the telescopic rod assembly comprises a fixing sleeve, a limiting rod, a positioning plate and an advancing and retreating operating rod, the fixing sleeve is horizontally arranged, the fixing sleeve is fixed at the upper end of the positioning column, the limiting rod is arranged in the fixing sleeve in a sliding and penetrating mode, the inner end of the limiting rod extends out of the fixing sleeve and is located right above the mounting hole, and the outer end of the limiting rod is located in the fixing sleeve;
the positioning plate is connected with the outer end of the fixing sleeve through a fixing bolt, the advancing and retreating operating rod and the limiting rod are positioned on the same straight line, the inner end of the advancing and retreating operating rod is connected with the limiting rod, and the outer end of the advancing and retreating operating rod penetrates out of the positioning plate;
the advancing and retreating operating rod is in threaded fit with the positioning plate.
The anti-falling device is characterized in that a butt joint groove is formed in the end face of the outer end of the limiting rod, any end of the butt joint groove is communicated with the side face of the limiting rod, the butt joint groove is a necking groove, the butt joint groove is a T-shaped groove, an anti-falling bearing is arranged at the inner end of the advancing and retreating operating rod, an inner ring of the anti-falling bearing is fixedly sleeved on the advancing and retreating operating rod, and an outer ring of the anti-falling bearing is abutted against the groove wall of.
And an inner hexagonal wrench hole is formed in the outer end face of the advancing and retreating operating rod.
The fixing sleeve is a square pipe, a locking bolt hole penetrates through the side wall of the fixing sleeve, a locking screw is arranged in the locking bolt hole, and the inner end of the locking bolt is tightly abutted to the limiting rod.
The positioning column is obliquely arranged, the lower end of the positioning column is close to the outer edge of the chuck bottom plate, and the upper end of the positioning column is close to the hole center line of the mounting hole.
The anti-skid device is characterized in that a trapezoidal table is arranged on the end face of the inner end of the limiting rod, the end face of the large opening end of the trapezoidal table is fixedly connected with the end face of the inner end of the limiting rod, two anti-skid strips are vertically arranged on the end face of the small opening end of the trapezoidal table, and the anti-skid strips are made of hard plastics.
Has the advantages that: when facing the valve guide pipe of different models, adjust each independent telescopic link subassembly and adapt to the valve guide pipe of different models, when telescopic link subassembly takes place wearing and tearing, can in time adjust, guarantee to press from both sides tight effect and concentricity, improved the machining precision.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view of the stop lever 6;
fig. 5 is a sectional view B-B of fig. 4.
Detailed Description
The present invention will be further explained with reference to the following examples and drawings.
As shown in fig. 1 to 5, a positioning chuck for internal grinding of a valve guide tube comprises a chuck bottom plate 1, a positioning device 2, a mounting hole a, a positioning column 3, a fixing sleeve 5, a limiting rod 6, a positioning plate 7, an advancing and retreating operating rod 8, an anti-dropping bearing 8a and a locking screw rod 4, wherein:
the positioning device 2 is fixedly arranged on the chuck bottom plate 1;
mounting holes a penetrate through the chuck base plate 1, all the positioning devices 2 are uniformly arranged around the mounting holes a, and all the positioning devices 2 are positioned on the same side of the chuck base plate 1;
positioner 2 includes reference column 3 and telescopic link subassembly, the one end of reference column 3 is fixed on chuck bottom plate 1, the other end of reference column 3 is fixed with the telescopic link subassembly, the telescopic link subassembly is followed the radial setting of mounting hole an.
Specifically, the method comprises the following steps:
the chuck base plate 1 is horizontally arranged, the positioning column 3 is arranged on the upper surface of the chuck base plate 1, and the telescopic rod component is arranged at the upper end of the positioning column 3;
the telescopic rod assembly comprises a fixed sleeve 5, a limiting rod 6, a positioning plate 7 and an advancing and retreating operating rod 8, the fixed sleeve 5 is horizontally arranged, the fixed sleeve 5 is fixed at the upper end of the positioning column 3, the limiting rod 6 is slidably arranged in the fixed sleeve 5 in a penetrating manner, the inner end of the limiting rod 6 extends out of the fixed sleeve 5 and is positioned right above the mounting hole a, and the outer end of the limiting rod 6 is positioned in the fixed sleeve 5;
the positioning plate 7 is connected with the outer end of the fixing sleeve 5 through a fixing bolt, the advancing and retreating operating rod 8 and the limiting rod 6 are positioned on the same straight line, the inner end of the advancing and retreating operating rod 8 is connected with the limiting rod 6, and the outer end of the advancing and retreating operating rod 8 penetrates out of the positioning plate 7;
the advancing and retreating operating rod 8 is in threaded fit with the positioning plate 7.
The anti-falling device is characterized in that a butt joint groove is formed in the end face of the outer end of the limiting rod 6, any end of the butt joint groove is communicated with the side face of the limiting rod 6, the butt joint groove is a necking groove, the butt joint groove is a T-shaped groove, an anti-falling bearing 8a is arranged at the inner end of the advancing and retreating operating rod 8, an inner ring of the anti-falling bearing 8a is fixedly sleeved on the advancing and retreating operating rod 8, and an outer ring of the anti-falling bearing 8a is abutted to the groove wall of.
And an inner hexagonal wrench hole is formed in the outer end surface of the advancing and retreating operating rod 8.
The fixing sleeve 5 is a square pipe, a locking bolt hole penetrates through the side wall of the fixing sleeve 5, a locking screw rod 4 is arranged in the locking bolt hole, and the inner end of the locking bolt is tightly abutted to the limiting rod 6.
The positioning column 3 is obliquely arranged, the lower end of the positioning column 3 is close to the outer edge of the chuck bottom plate 1, and the upper end of the positioning column 3 is close to the hole center line of the mounting hole a.
The anti-skid device is characterized in that a trapezoidal table is arranged on the inner end face of the limiting rod 6, the large end face of the trapezoidal table is fixedly connected with the inner end face of the limiting rod 6, two anti-skid strips are vertically arranged on the small end face of the trapezoidal table, and the anti-skid strips are made of hard plastics.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (7)
1. The utility model provides a valve pipe internal grinding positioning chuck which characterized in that: the automatic positioning device comprises a chuck bottom plate (1) and at least three positioning devices (2), wherein the positioning devices (2) are fixedly arranged on the chuck bottom plate (1);
mounting holes (a) penetrate through the chuck base plate (1), all the positioning devices (2) are uniformly arranged around the mounting holes (a), and all the positioning devices (2) are positioned on the same side of the chuck base plate (1);
positioner (2) include reference column (3) and telescopic link subassembly, the one end of reference column (3) is fixed on chuck bottom plate (1), the other end of reference column (3) is fixed with telescopic link subassembly, telescopic link subassembly is followed the radial setting of mounting hole (a).
2. The valve guide internal grinding locating chuck of claim 1, wherein: the chuck bottom plate (1) is horizontally arranged, the positioning column (3) is arranged on the upper surface of the chuck bottom plate (1), and the telescopic rod assembly is arranged at the upper end of the positioning column (3);
the telescopic rod assembly comprises a fixing sleeve (5), a limiting rod (6), a positioning plate (7) and an advancing and retreating operating rod (8), the fixing sleeve (5) is horizontally arranged, the fixing sleeve (5) is fixed at the upper end of the positioning column (3), the limiting rod (6) is arranged in the fixing sleeve (5) in a penetrating mode in a sliding mode, the inner end of the limiting rod (6) extends out of the fixing sleeve (5) and is located right above the mounting hole (a), and the outer end of the limiting rod (6) is located in the fixing sleeve (5);
the positioning plate (7) is connected with the outer end of the fixing sleeve (5) through a fixing bolt, the advancing and retreating operating rod (8) and the limiting rod (6) are positioned on the same straight line, the inner end of the advancing and retreating operating rod (8) is connected with the limiting rod (6), and the outer end of the advancing and retreating operating rod (8) penetrates out of the positioning plate (7);
the advancing and retreating operating rod (8) is in threaded fit with the positioning plate (7).
3. The valve guide internal grinding locating chuck of claim 2, wherein: the anti-falling device is characterized in that a butt joint groove is formed in the end face of the outer end of the limiting rod (6), any one end of the butt joint groove is communicated with the side face of the limiting rod (6), the butt joint groove is a necking groove, the butt joint groove is a T-shaped groove, an anti-falling bearing (8a) is arranged at the inner end of the advancing and retreating operating rod (8), an inner ring of the anti-falling bearing (8a) is fixedly sleeved on the advancing and retreating operating rod (8), and an outer ring of the anti-falling bearing (8a) is abutted to the groove wall of the.
4. The valve guide internal grinding locating chuck of claim 2, wherein: and an inner hexagonal wrench hole is formed in the outer end surface of the advancing and retreating operating rod (8).
5. The valve guide internal grinding locating chuck of claim 2, wherein: the fixing sleeve (5) is a square pipe, a locking bolt hole penetrates through the side wall of the fixing sleeve (5), a locking screw (4) is arranged in the locking bolt hole, and the inner end of the locking bolt is tightly abutted to the limiting rod (6).
6. The valve guide internal grinding locating chuck of claim 2, wherein: the positioning column (3) is obliquely arranged, the lower end of the positioning column (3) is close to the outer edge of the chuck bottom plate (1), and the upper end of the positioning column (3) is close to the hole center line of the mounting hole (a).
7. The valve guide internal grinding locating chuck of claim 2, wherein: the anti-skid device is characterized in that a trapezoidal table is arranged on the end face of the inner end of the limiting rod (6), the end face of the large opening end of the trapezoidal table is fixedly connected with the end face of the inner end of the limiting rod (6), two anti-skid strips are vertically arranged on the end face of the small opening end of the trapezoidal table, and the anti-skid strips are made of hard plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371793.2U CN210335586U (en) | 2019-08-22 | 2019-08-22 | Positioning chuck for internal grinding of valve guide pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371793.2U CN210335586U (en) | 2019-08-22 | 2019-08-22 | Positioning chuck for internal grinding of valve guide pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210335586U true CN210335586U (en) | 2020-04-17 |
Family
ID=70175850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921371793.2U Active CN210335586U (en) | 2019-08-22 | 2019-08-22 | Positioning chuck for internal grinding of valve guide pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210335586U (en) |
-
2019
- 2019-08-22 CN CN201921371793.2U patent/CN210335586U/en active Active
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