CN112496371B - Expansion and rollback type positioning mandrel assembly - Google Patents
Expansion and rollback type positioning mandrel assembly Download PDFInfo
- Publication number
- CN112496371B CN112496371B CN202011191214.3A CN202011191214A CN112496371B CN 112496371 B CN112496371 B CN 112496371B CN 202011191214 A CN202011191214 A CN 202011191214A CN 112496371 B CN112496371 B CN 112496371B
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- CN
- China
- Prior art keywords
- positioning
- expansion
- mandrel
- workpiece
- shaft 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.)
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses an expanding and retreating type positioning mandrel assembly, which comprises: the positioning shaft sleeve is internally provided with a workpiece mounting opening and a positioning channel, and the positioning channel is communicated with the workpiece mounting opening; and the lower end of the expansion mandrel is movably arranged in the positioning channel. The expansion and retraction type positioning mandrel assembly is simple in structure, the workpiece can be positioned by rotating the expansion mandrel to change the position of the expansion mandrel, and the expansion and retraction type positioning mandrel assembly is convenient to use; when the spring pressing piece is used, the spring presses the radial centering shaft, the radial centering shaft drives the steel ball to press the expansion core shaft, and the centering positioning of the expansion core shaft is realized, so that the inclination of the expansion core shaft is avoided, the positioning precision is higher, the whole expansion rollback type positioning core shaft assembly is small and exquisite in structure, simple, low in production cost and practical, and a better use prospect is brought.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an expanding and retreating type positioning mandrel assembly.
Background
The automobile engine is a device for providing power for the automobile, is the heart of the automobile, determines the dynamic property, economy, stability and environmental protection of the automobile, is widely applied along with the progress of the age, and is provided with a plurality of mechanisms, so that in order to facilitate the improvement of the processing precision of engine components, people invent a plurality of engine component positioning mechanisms;
the existing engine assembly positioning mechanism has certain defects when in use, the existing workpiece positioning mechanism is usually positioned by adopting a tapered shaft with threads at one end, the tapered shaft is easy to incline when being screwed up, the precision during positioning is reduced, and the use requirements of people cannot be met.
Disclosure of Invention
The invention mainly aims to provide an expanding and retreating type positioning mandrel assembly which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an expanding and retracting positioning mandrel assembly, comprising:
the positioning shaft sleeve is internally provided with a workpiece mounting opening and a positioning channel, and the positioning channel is communicated with the workpiece mounting opening; and
the positioning shaft sleeve is arranged in the positioning channel, and a limiting device used for limiting the position of the expanding mandrel is arranged in the positioning shaft sleeve.
Preferably, the limiting device comprises three groups of limiting parts, and the three groups of limiting parts are distributed on the positioning shaft sleeve in a regular triangle shape.
Preferably, three groups of mounting grooves are formed in the outer surface of the positioning shaft sleeve, and through holes are formed in the inner bottom surface of each mounting groove.
Preferably, the limiting piece comprises a steel ball, a radial centering shaft and a spring pressing piece, wherein the steel ball and the radial centering shaft are both positioned in the through hole, the spring pressing piece is fixedly arranged in the mounting groove through a bolt, and one end of the radial centering shaft, which is far away from the steel ball, is movably connected with the spring pressing piece.
Preferably, the outer surface of the expansion mandrel is a conical surface near the upper end, and one end of the steel ball far away from the radial centering shaft is connected with the conical surface.
Preferably, threads are arranged on the outer surface of the expansion mandrel close to the lower end, a limit screw is arranged on the positioning shaft sleeve, and a workpiece is arranged in the workpiece mounting opening.
Compared with the prior art, the invention provides the expansion and retraction type positioning mandrel assembly, which has the following beneficial effects:
1. the invention has simple structure, can realize the positioning of the workpiece by rotating the expansion mandrel and changing the position of the expansion mandrel, and is convenient to use;
2. through the stop device who sets up, the radial centering axle of spring lamination's elasticity extrusion during the use, radial centering axle drive steel ball extrusion expansion dabber realizes the centering location of expansion dabber to avoid appearing expanding the dabber slope, positioning accuracy is higher, and whole expansion rollback formula positioning dabber subassembly's structure is small and exquisite, simple moreover, low in production cost, and is comparatively practical.
None of the parts of the device are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic view of the overall structure of an expanding and retracting type positioning mandrel assembly according to the present invention;
FIG. 2 is a schematic view showing the internal structure of an expanding and retreating type positioning mandrel assembly according to the present invention
FIG. 3 is a block diagram of a positioning sleeve in an expanding and retracting positioning mandrel assembly according to the present invention;
FIG. 4 is a block diagram of an expanding mandrel in an expanding and retracting type positioning mandrel assembly according to the present invention;
fig. 5 is a block diagram of a workpiece in an expanding and retracting type positioning mandrel assembly according to the present invention.
In the figure: 1. positioning the shaft sleeve; 2. a workpiece mounting opening; 3. positioning the channel; 4. expanding the mandrel; 5. a mounting groove; 6. a through hole; 7. a steel ball; 8. a radial centering shaft; 9. spring tabletting; 10. and (5) limiting screws.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
An expanding and collapsing positioning mandrel assembly, as shown in fig. 1-5, comprising:
the positioning shaft sleeve 1 is internally provided with a workpiece mounting opening 2 and a positioning channel 3, and the positioning channel 3 is communicated with the workpiece mounting opening 2; and
the lower end of the expansion mandrel 4 is movably arranged in the positioning channel 3, and a limiting device for limiting the position of the expansion mandrel 4 is arranged in the positioning shaft sleeve 1.
The limiting device comprises three groups of limiting parts which are distributed on the positioning shaft sleeve 1 in a regular triangle shape.
Three groups of mounting grooves 5 are formed in the outer surface of the positioning shaft sleeve 1, and through holes 6 are formed in the inner bottom surface of the mounting grooves 5.
The limiting piece comprises a steel ball 7, a radial centering shaft 8 and a spring pressing piece 9, wherein the steel ball 7 and the radial centering shaft 8 are both positioned in the through hole 6, the spring pressing piece 9 is fixedly installed in the installation groove 5 through a bolt, and one end, far away from the steel ball 7, of the radial centering shaft 8 is movably connected with the spring pressing piece 9.
The outer surface of the expansion mandrel 4 is a conical surface near the upper end, and one end of the steel ball 7 far away from the radial centering shaft 8 is connected with the conical surface.
The outer surface of the expansion mandrel 4 is provided with threads near the lower end, the positioning shaft sleeve 1 is provided with a limit screw 10, the inside of the workpiece mounting opening 2 is provided with a workpiece, and the inside of the workpiece is provided with a step hole.
When the expansion and retraction type positioning mandrel assembly is used, a workpiece is placed into a workpiece mounting port 2, an expansion mandrel 4 is twisted, the expansion mandrel 4 is inserted into the workpiece to position the workpiece, and the expansion mandrel 4 is reversely rotated after machining to take out the workpiece;
when the expansion mandrel 4 is screwed down, the conical surface of the expansion mandrel 4 props against the three steel balls 7, the three steel balls 7 are pushed by the conical surface to push the radial centering shaft 8 and move along the through hole 6, the radial centering shaft 8 is used for extruding the spring pressing sheet 9, and the spring pressing sheet 9 is fed back to the steel balls 7 by the elasticity generated by pushing to realize centering positioning of the expansion mandrel 4;
when the expanding mandrel 4 is unscrewed, a gap exists between the conical surface and the steel ball 7, and under the action of the elasticity of the spring pressing sheet 9, the radial centering shaft 8 and the steel ball 7 are pushed to retract.
The invention has simple structure, can realize the positioning of the workpiece by rotating the expansion mandrel 4 and changing the position of the expansion mandrel 4, and is convenient to use;
through the stop device who sets up, the radial centering shaft 8 of elasticity extrusion of spring preforming 9 during the use, radial centering shaft 8 drive steel ball 7 extrusion expansion dabber 4 realizes the centering location of expansion dabber 4 to avoid appearing expanding dabber 4 slope, positioning accuracy is higher, and whole expansion rollback formula positioning dabber subassembly's structure is small and exquisite, simple moreover, low in production cost, and is comparatively practical.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. An expanding and retracting positioning mandrel assembly, comprising:
the positioning device comprises a positioning shaft sleeve (1), wherein a workpiece mounting opening (2) and a positioning channel (3) are formed in the positioning shaft sleeve (1), and the positioning channel (3) is communicated with the workpiece mounting opening (2); and
the positioning device comprises an expanding mandrel (4) for positioning a workpiece, wherein the lower end of the expanding mandrel (4) is movably arranged in a positioning channel (3), and a limiting device for limiting the position of the expanding mandrel (4) is arranged in the positioning shaft sleeve (1);
the limiting device comprises three groups of limiting pieces, and the three groups of limiting pieces are distributed on the positioning shaft sleeve (1) in a regular triangle shape;
three groups of mounting grooves (5) are formed in the outer surface of the positioning shaft sleeve (1), and through holes (6) are formed in the inner bottom surface of each mounting groove (5);
the limiting piece comprises a steel ball (7), a radial centering shaft (8) and a spring pressing piece (9), wherein the steel ball (7) and the radial centering shaft (8) are both positioned in the through hole (6), the spring pressing piece (9) is fixedly arranged in the mounting groove (5) through a bolt, and one end, far away from the steel ball (7), of the radial centering shaft (8) is movably connected with the spring pressing piece (9);
the outer surface of the expanding mandrel (4) is a conical surface near the upper end, and one end of the steel ball (7) far away from the radial centering shaft (8) is connected with the conical surface;
the outer surface of the expansion mandrel (4) is provided with threads close to the lower end, the positioning shaft sleeve (1) is provided with a limit screw (10), and a workpiece is arranged in the workpiece mounting opening (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191214.3A CN112496371B (en) | 2020-10-30 | 2020-10-30 | Expansion and rollback type positioning mandrel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191214.3A CN112496371B (en) | 2020-10-30 | 2020-10-30 | Expansion and rollback type positioning mandrel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112496371A CN112496371A (en) | 2021-03-16 |
| CN112496371B true CN112496371B (en) | 2024-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011191214.3A Active CN112496371B (en) | 2020-10-30 | 2020-10-30 | Expansion and rollback type positioning mandrel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112496371B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726111A (en) * | 1986-01-17 | 1988-02-23 | Komet Stahlhalter Und Werkzeugfabrick Robert Breuning Gmbh | Change head for a tool change apparatus |
| US5052866A (en) * | 1989-10-30 | 1991-10-01 | Ott Maschinentechnik Gmbh | Actuating arrangement for a clamping device in a machine tool spindle |
| CN201632833U (en) * | 2010-03-25 | 2010-11-17 | 广西玉柴机器股份有限公司 | Device for ensuring assembly coaxiality of clutch component |
| CN202137420U (en) * | 2011-07-08 | 2012-02-08 | 山西晋西压力容器有限责任公司 | Flange connecting hole drilling device |
| CN202479628U (en) * | 2012-03-23 | 2012-10-10 | 上海飞华汽车部件有限公司 | Gear shaping tooling for positioning by utilizing reducing holes of workpiece |
| CN103395037A (en) * | 2013-07-02 | 2013-11-20 | 广西玉柴机器股份有限公司 | Valve seat ring disassembling tool |
| CN204819274U (en) * | 2015-07-23 | 2015-12-02 | 李光明 | A lock shell fixing device for lock core assembly |
| CN109653195A (en) * | 2019-01-09 | 2019-04-19 | 袁雪峰 | A kind of mechanical splice |
| CN213916182U (en) * | 2020-10-30 | 2021-08-10 | 广西玉柴机器股份有限公司 | Expansion backspacing type positioning mandrel assembly |
-
2020
- 2020-10-30 CN CN202011191214.3A patent/CN112496371B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726111A (en) * | 1986-01-17 | 1988-02-23 | Komet Stahlhalter Und Werkzeugfabrick Robert Breuning Gmbh | Change head for a tool change apparatus |
| US5052866A (en) * | 1989-10-30 | 1991-10-01 | Ott Maschinentechnik Gmbh | Actuating arrangement for a clamping device in a machine tool spindle |
| CN201632833U (en) * | 2010-03-25 | 2010-11-17 | 广西玉柴机器股份有限公司 | Device for ensuring assembly coaxiality of clutch component |
| CN202137420U (en) * | 2011-07-08 | 2012-02-08 | 山西晋西压力容器有限责任公司 | Flange connecting hole drilling device |
| CN202479628U (en) * | 2012-03-23 | 2012-10-10 | 上海飞华汽车部件有限公司 | Gear shaping tooling for positioning by utilizing reducing holes of workpiece |
| CN103395037A (en) * | 2013-07-02 | 2013-11-20 | 广西玉柴机器股份有限公司 | Valve seat ring disassembling tool |
| CN204819274U (en) * | 2015-07-23 | 2015-12-02 | 李光明 | A lock shell fixing device for lock core assembly |
| CN109653195A (en) * | 2019-01-09 | 2019-04-19 | 袁雪峰 | A kind of mechanical splice |
| CN213916182U (en) * | 2020-10-30 | 2021-08-10 | 广西玉柴机器股份有限公司 | Expansion backspacing type positioning mandrel assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112496371A (en) | 2021-03-16 |
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