CN210909143U - Special fixture for turning special-shaped eccentric long pipe part - Google Patents
Special fixture for turning special-shaped eccentric long pipe part Download PDFInfo
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- CN210909143U CN210909143U CN201921512743.1U CN201921512743U CN210909143U CN 210909143 U CN210909143 U CN 210909143U CN 201921512743 U CN201921512743 U CN 201921512743U CN 210909143 U CN210909143 U CN 210909143U
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- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 abstract description 10
- 238000003754 machining Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a special clamp for turning special-shaped eccentric long pipe parts, which comprises a base body, a fixed body, a central column and an eccentric shaft; the base body is clamped on a lathe clamping jaw, the fixed body is arranged on the base body, a fixed body special-shaped groove for placing an eccentric shaft is formed in the middle of the fixed body, and one end of the central column in the fixed body special-shaped groove is connected with the base body in an installing mode; the eccentric shaft and the base body are arranged on the same horizontal direction and are matched and connected with a machine tool center frame, and an eccentric shaft special-shaped groove which has the same shape as the fixed body special-shaped groove and corresponds to the fixed body special-shaped groove in position is formed in the eccentric shaft. The utility model provides a heterotypic pipe fitting causes rotatory centrifugal force too big work piece vibration, clamping not hard up because of off-centre, and the problem of unable processing ensures that its processing pipe fitting hole is coaxial with lathe rotation center to realize eccentric clamping's stable processing.
Description
Technical Field
The utility model belongs to the technical field of machining, concretely relates to eccentric long tube part turning special fixture of abnormal shape.
Background
In the field of machining, with continuous innovation of part design, machining of special-shaped parts is continuously increased. The machining of the special-shaped eccentric long pipe part is the largest machining difficulty in the special-shaped part, the eccentric clamping rotating centrifugal force is large, clamping loosening during rotation can be caused by directly clamping the special-shaped eccentric long pipe part by clamping jaws on a common lathe, and the machining of the two ends and the length of the special-shaped eccentric pipe fitting cannot be finished.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an eccentric long tube part turning special fixture of abnormal shape, the device solves the abnormal shape pipe fitting and leads to work piece vibration, clamping not hard up because of the eccentric rotatory centrifugal force is too big, and the problem of unable processing ensures that its processing pipe fitting hole is coaxial with the lathe centre of rotation to realize eccentric clamping's stable processing.
The utility model discloses a realize through following technical scheme:
a special turning clamp for a special-shaped eccentric long pipe part comprises a base body, a fixed body, a central column and an eccentric shaft;
the base body is clamped on a lathe clamping jaw, the fixed body is arranged on the base body, a fixed body special-shaped groove for placing an eccentric shaft is formed in the middle of the fixed body, and one end of the central column in the fixed body special-shaped groove is connected with the base body in an installing mode;
the eccentric shaft and the base body are arranged on the same horizontal direction and are matched and connected with a machine tool center frame, and an eccentric shaft special-shaped groove which has the same shape as the fixed body special-shaped groove and corresponds to the fixed body special-shaped groove in position is formed in the eccentric shaft.
In the above technical solution, the fixing body includes a circular portion and a special-shaped portion, the circular portion and the special-shaped portion are connected to form a whole, and the outer diameter of the cross section of the circular portion is larger than that of the special-shaped portion; the outer contour of the section of the special-shaped part is similar to the section shape of the special-shaped eccentric pipe fitting, the groove formed in the fixing body is similar to the section shape of the special-shaped eccentric pipe fitting, the lower half part of the groove is similar to a rectangle, and the upper half part of the groove is similar to a semiellipse.
In the above-described aspect, the circular portion is formed with a bolt hole, and the fixing body can be attached to the base body by a connecting bolt.
In the above technical scheme, the number of the bolt holes is 4, and the bolt holes are symmetrically distributed at four positions of the circular part, namely the upper part, the lower part, the left part and the right part.
In the technical scheme, through holes are formed in the upper, lower, left and right parts of the special-shaped part respectively, and jackscrews used for fastening the end part of the special-shaped eccentric pipe fitting are installed in the through holes.
In the above technical scheme, a groove of the fixing body is internally provided with an upper gasket for fastening the special-shaped eccentric pipe fitting, an upper surface of the upper gasket is attached to the upper surface of the fixing body, and a lower surface of the fixing body is attached to the lower surface of the fixing body.
In the above technical scheme, the inner diameters of the through holes of the central column and the special-shaped eccentric pipe fitting are equal.
In the above technical solution, the central column is disposed at a center of the base.
In the above technical scheme, a cushion block is arranged at the lower part of the eccentric shaft.
In the technical scheme, a jackscrew for fastening is arranged below the eccentric shaft cushion block.
The use method of the special clamp for turning the special-shaped eccentric long pipe part comprises the following steps:
step one, mounting a base body on a lathe claw, placing a central column in the base body, and fixing the central column by using a bolt;
step two, the fixing body is arranged in the eccentric seam allowance of the base body and fixed by a bolt;
step three, one end of the special-shaped eccentric pipe fitting is arranged into an eccentric shaft special-shaped groove and fixed by a jackscrew, and the other end of the special-shaped eccentric pipe fitting is arranged into a fixing body; the eccentric shaft is matched with a machine tool center frame, the center frame is adjusted and locked, then jackscrews on the periphery of the fixing body are sequentially screwed, and turning processing of one end can be implemented after clamping and fixing the blank.
The utility model discloses an advantage and beneficial effect do:
the utility model uses the appearance of the abnormal eccentric pipe as the clamping reference, fixes one end, uses the center frame to support the tail end, ensures the inner hole of the abnormal eccentric pipe to be coaxial with the rotation center of the machine tool, uses the center of the inner hole of the abnormal eccentric pipe as the turning center, and implements the processing process of the port of the special pipe; after one end is machined, the clamping fixture is loosened, the other end is clamped and fixed again after the clamping fixture is reversed, the machining process of the other end port is carried out, the center column is used as a length measuring reference, and the machining length can be accurately measured in the machining process. A special fixture for turning of special-shaped eccentric long pipe parts overcomes the eccentric machining problem and is stable in machining. Through tests, the processing yield is stabilized at 96%.
Drawings
Fig. 1 is a schematic side view of the present invention.
Fig. 2 is a schematic view of the cross-sectional structure a-a in fig. 1.
Fig. 3 is a schematic structural view of a section B-B in fig. 1.
Fig. 4 is a schematic perspective view of the present invention.
Wherein: the device comprises a base body 1, a fixing body 2, a connecting bolt 3, an upper gasket 4, a central column 5, a lower gasket 6, a jackscrew 7, an eccentric shaft 8, a cushion block 9 and a special-shaped eccentric pipe 10.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example 1
A special turning clamp for a special-shaped eccentric long pipe part comprises a base body 1, a fixed body 2, a central column 5 and an eccentric shaft 8;
the fixture comprises a base body, a fixing body and a clamping jaw, wherein the base body is clamped on the clamping jaw of the lathe, the fixing body is arranged on the base body, a fixing body special-shaped groove used for placing an eccentric shaft is formed in the middle of the fixing body, the fixing body comprises a circular part and a special-shaped part, the circular part and the special-shaped part are connected into a whole, and the outer diameter of the cross section of the circular part is larger than that of the special-shaped; the outer contour of the section of the special-shaped part is similar to the section shape of the special-shaped eccentric pipe fitting, the groove formed in the fixing body is similar to the section shape of the special-shaped eccentric pipe fitting, the lower half part of the groove is similar to a rectangle, and the upper half part of the groove is similar to a semiellipse. The circular portion is formed with a bolt hole, and the fixing body can be attached to the base body by the connecting bolt 3. The bolt hole quantity is 4, and the symmetric distribution is in the upper and lower left and right sides of circular portion four places. Through holes are formed in the upper, lower, left and right parts of the special-shaped part respectively, and jackscrews 7 used for fastening the end parts of the special-shaped eccentric pipe fittings are installed in the through holes. And the groove of the fixing body is internally provided with an upper gasket 4 for fastening the special-shaped eccentric pipe fitting, the upper gasket is attached to the surface of the upper part of the special-shaped eccentric pipe fitting, and a lower gasket 6 is attached to the surface of the lower part of the special-shaped eccentric pipe fitting.
One end of the central column is arranged and connected with the base body in a special-shaped groove of the fixed body; the central column is positioned at the center of the base body. The inner diameters of the through holes of the central column and the special-shaped eccentric pipe fitting are equal.
The eccentric shaft and the base body are arranged on the same horizontal direction and are matched and connected with a machine tool center frame, and an eccentric shaft special-shaped groove which has the same shape as the fixed body special-shaped groove and corresponds to the fixed body special-shaped groove in position is formed in the eccentric shaft. The lower part of the eccentric shaft is provided with a cushion block 9. And a jackscrew for fastening is arranged below the eccentric shaft cushion block.
Example 2
The utility model discloses a use method as follows:
1. as shown in figure 1, a base body 1 of the device is clamped on a machine tool spindle three-jaw, and a fixed body 2 is arranged in an eccentric rabbet on the base body 1 and is fixed by a connecting bolt 3; the central column 4 is arranged in the base body and fixed by bolts; one end of the special-shaped eccentric pipe fitting is arranged in the fixing body 2, an upper gasket 4 and a lower gasket 6 are arranged for preventing surface clamping damage, and a jackscrew 7 is sequentially screwed for fixing; the other end of the eccentric shaft 8 is arranged in a special-shaped groove, is fixed by a cushion block 9 and a jackscrew and is matched with the central frame to assist in supporting the special-shaped eccentric pipe fitting, and then the turning processing of one end of the special-shaped eccentric pipe fitting can be carried out.
2. After one end is machined, the clamping fixture is loosened, the other end is clamped and fixed again by reversing the clamping fixture, the central column 5 is used as a length measuring reference, the machining length can be accurately measured in the machining process, and the machining process of the other end port is carried out.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (11)
1. The utility model provides an eccentric long tube part turning special fixture of abnormal shape which characterized in that: comprises a base body, a fixed body, a central column and an eccentric shaft;
the base body is clamped on a lathe clamping jaw, the fixed body is arranged on the base body, a fixed body special-shaped groove for placing an eccentric shaft is formed in the middle of the fixed body, and one end of the central column in the fixed body special-shaped groove is connected with the base body in an installing mode;
the eccentric shaft and the base body are arranged on the same horizontal direction and are matched and connected with a machine tool center frame, and an eccentric shaft special-shaped groove which has the same shape as the fixed body special-shaped groove and corresponds to the fixed body special-shaped groove in position is formed in the eccentric shaft.
2. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 1, wherein: the fixing body comprises a circular part and an abnormal part, the circular part and the abnormal part are connected to form a whole, and the outer diameter of the section of the circular part is larger than that of the abnormal part; the outer contour of the section of the special-shaped part has a shape similar to the section shape of the special-shaped eccentric pipe fitting, and the groove formed in the fixing body has a shape similar to the section shape of the special-shaped eccentric pipe fitting.
3. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 2, wherein: the lower half part of the cross section of the special-shaped eccentric pipe fitting is approximately rectangular, and the upper half part of the cross section of the special-shaped eccentric pipe fitting is semi-elliptical.
4. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 2, wherein: the circular portion is formed with a bolt hole, and the fixing body can be attached to the base body by a connecting bolt.
5. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 4, wherein: the number of the bolt holes is 4, and the bolt holes are symmetrically distributed at the upper, lower, left and right parts of the circular part.
6. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 2, wherein: through holes are formed in the upper, lower, left and right parts of the special-shaped part respectively, and jackscrews used for fastening the end parts of the special-shaped eccentric pipe fittings are installed in the through holes.
7. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 1, wherein: the groove of the fixing body is internally provided with an upper gasket used for fastening the special-shaped eccentric pipe fitting, an upper gasket attached to the surface of the upper part of the special-shaped eccentric pipe fitting and a lower gasket attached to the surface of the lower part of the special-shaped eccentric pipe fitting.
8. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 1, wherein: the inner diameters of the through holes of the central column and the special-shaped eccentric pipe fitting are equal.
9. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 1, wherein: the central column is arranged at the center of the base body.
10. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 1, wherein: and a cushion block is arranged at the lower part of the eccentric shaft.
11. The special fixture for turning the special-shaped eccentric long pipe part as claimed in claim 1, wherein: and a jackscrew for fastening is arranged below the eccentric shaft cushion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512743.1U CN210909143U (en) | 2019-09-11 | 2019-09-11 | Special fixture for turning special-shaped eccentric long pipe part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512743.1U CN210909143U (en) | 2019-09-11 | 2019-09-11 | Special fixture for turning special-shaped eccentric long pipe part |
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| Publication Number | Publication Date |
|---|---|
| CN210909143U true CN210909143U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921512743.1U Active CN210909143U (en) | 2019-09-11 | 2019-09-11 | Special fixture for turning special-shaped eccentric long pipe part |
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| Country | Link |
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| CN (1) | CN210909143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561161A (en) * | 2019-09-11 | 2019-12-13 | 中核(天津)科技发展有限公司 | Special clamp for turning special-shaped eccentric long pipe part and using method thereof |
-
2019
- 2019-09-11 CN CN201921512743.1U patent/CN210909143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561161A (en) * | 2019-09-11 | 2019-12-13 | 中核(天津)科技发展有限公司 | Special clamp for turning special-shaped eccentric long pipe part and using method thereof |
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