CN112496371A - Expansion backspacing type positioning mandrel assembly - Google Patents
Expansion backspacing type positioning mandrel assembly Download PDFInfo
- Publication number
- CN112496371A CN112496371A CN202011191214.3A CN202011191214A CN112496371A CN 112496371 A CN112496371 A CN 112496371A CN 202011191214 A CN202011191214 A CN 202011191214A CN 112496371 A CN112496371 A CN 112496371A
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- Prior art keywords
- positioning
- mandrel
- expanding
- workpiece
- expansion
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
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- 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 retracting type positioning mandrel component, 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 expanding mandrel is movably arranged in the positioning channel. The expansion backspacing type positioning mandrel component is simple in structure, positioning of a workpiece can be achieved by rotating the expansion mandrel to change the position of the expansion mandrel, and the expansion backspacing type positioning mandrel component is convenient to use; when the positioning device is used, the spring pressing sheet extrudes the radial centering shaft through elasticity, the radial centering shaft drives the steel ball to extrude the expanding mandrel, and the centering and positioning of the expanding mandrel are realized, so that the expanding mandrel is prevented from inclining, the positioning precision is higher, and the whole expanding and returning type positioning mandrel assembly is small and simple in structure, low in production cost, practical and capable of bringing better use prospect.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an expanding and retracting type positioning mandrel assembly.
Background
The automobile engine is a device for providing power for an automobile, is the heart of the automobile, determines the dynamic property, the economical efficiency, the stability and the environmental protection property of the automobile, and is widely applied along with the progress of the times;
the existing engine assembly positioning mechanism has certain defects when in use, the existing workpiece positioning mechanism is generally positioned by adopting a conical shaft with a thread at one end, and the conical shaft is easy to incline when the conical shaft is screwed down, so that the positioning precision is reduced, and the use requirements of people cannot be met.
Disclosure of Invention
The invention mainly aims to provide an expanding and retracting type positioning mandrel assembly which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
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 device comprises an expansion mandrel for positioning a workpiece, wherein the lower end of the expansion mandrel is movably arranged in a positioning channel, and a limiting device for limiting the position of the expansion mandrel is arranged in a positioning shaft sleeve.
Preferably, the limiting device comprises three sets of limiting parts, and the three sets 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 part comprises a steel ball, a radial centering shaft and a spring pressing piece, the steel ball and the radial centering shaft are both located inside the through hole, the spring pressing piece is fixedly installed inside the installation groove through a bolt, and one end, far away from the steel ball, of the radial centering shaft is movably connected with the spring pressing piece.
Preferably, the outer surface of the expansion mandrel is a conical surface close to the upper end, and one end, far away from the radial centering shaft, of the steel ball is connected with the conical surface.
Preferably, the outer surface of the expansion mandrel is provided with threads at a position close to the lower end, the positioning shaft sleeve is provided with a limit screw, and a workpiece is arranged in the workpiece mounting opening.
Compared with the prior art, the invention provides an expanding and retracting type positioning mandrel component which has the following beneficial effects:
1. the invention has simple structure, can realize the positioning of the workpiece by rotating the expanding mandrel to change the position of the expanding mandrel, and is more convenient to use;
2. through the stop device who sets up, the radial centering axle of elasticity extrusion of spring preforming during the use, radial centering axle drive steel ball extrusion expanding dabber, realizes expanding the centering location of dabber to avoid appearing expanding the dabber slope, positioning accuracy is higher, and whole expanding returns the small and exquisite, simple of structure of formula positioning mandrel subassembly that rolls back moreover, low in production cost, it is comparatively practical.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic view of an expanding and retracting positioning mandrel assembly according to the present invention;
FIG. 2 is a schematic view of the internal structure of an expanding and retracting positioning mandrel assembly according to the present invention
FIG. 3 is a schematic view of a positioning sleeve in an expanding and retracting positioning mandrel assembly according to the present invention;
FIG. 4 is a view of the expanding mandrel of an expanding and retracting positioning mandrel assembly of the present invention;
FIG. 5 is a schematic view of a workpiece in an expanding and retracting positioning mandrel assembly of the present invention.
In the figure: 1. positioning the shaft sleeve; 2. a workpiece mounting port; 3. a positioning channel; 4. expanding the mandrel; 5. mounting grooves; 6. a through hole; 7. a steel ball; 8. a radial centering shaft; 9. pressing a spring plate; 10. and a limiting screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
An expanding and retracting positioning mandrel assembly, as shown in figures 1-5, 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 expanding mandrel is used for positioning a workpiece, the lower end of the expanding mandrel 4 is movably arranged in the positioning channel 3, and a limiting device used 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 parts which are distributed on the positioning shaft sleeve 1 in a regular triangle shape.
Three sets of mounting grooves 5 are seted up to the surface of location axle sleeve 1, and through-hole 6 is seted up to the interior bottom surface of mounting groove 5.
The locating part includes steel ball 7, radial centering axle 8 and spring preforming 9, and steel ball 7 and radial centering axle 8 all are located through-hole 6 inside, and spring preforming 9 passes through bolt fixed mounting inside mounting groove 5, and radial centering axle 8 keeps away from the one end of steel ball 7 and spring preforming 9 swing joint.
The outer surface of the expanding mandrel 4 close to the upper end is a conical surface, 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 limiting screw 10, a workpiece is arranged inside the workpiece mounting hole 2, and a step hole is formed inside the workpiece.
The invention is an expanding and retracting type positioning mandrel component, when in use, a workpiece is placed in a workpiece mounting opening 2, an expanding mandrel 4 is screwed, the expanding mandrel 4 is inserted into the workpiece to realize the positioning of the workpiece, the expanding mandrel 4 is rotated reversely after the workpiece is processed, and the workpiece is taken out;
when the expanding mandrel 4 is screwed, the conical surface of the expanding mandrel 4 supports against the three steel balls 7, the three steel balls 7 are extruded by the conical surface to push the radial centering shaft 8 and move along the through hole 6, the radial centering shaft 8 extrudes the spring pressing sheet 9, and the elastic force generated by pushing the spring pressing sheet 9 is fed back to the steel balls 7, so that the centering and the positioning of the expanding mandrel 4 are realized;
when the expanding mandrel 4 is unscrewed, a gap exists between the conical surface and the steel ball 7, and the radial centering shaft 8 and the steel ball 7 are pushed to retreat under the elastic force action of the spring pressing sheet 9.
The invention has simple structure, can realize the positioning of the workpiece by rotating the expanding mandrel 4 and changing the position of the expanding mandrel 4, and is more convenient to use;
through the stop device who sets up, the radial centering axle 8 of elasticity extrusion of spring preforming 9 during use, radial centering axle 8 drives steel ball 7 extrusion dabber 4 that rises, realizes the centering location of 4 dabbers that rise to avoid appearing 4 slopes of dabber that rise, positioning accuracy is higher, and whole the rising returns back formula positioning core axle subassembly's that rises structure is small and exquisite, simple moreover, low in production cost, comparatively practical.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
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) used 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 used for limiting the position of the expanding mandrel (4) is arranged in a positioning shaft sleeve (1).
2. An expanding and retracting positioning mandrel assembly as claimed in claim 1, wherein: the limiting device comprises three groups of limiting parts, and the three groups of limiting parts are distributed on the positioning shaft sleeve (1) in a regular triangle shape.
3. An expanding and retracting positioning mandrel assembly as claimed in claim 2, wherein: 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 surfaces of the mounting grooves (5).
4. An expanding and retracting positioning mandrel assembly as claimed in claim 3, wherein: the limiting piece comprises a steel ball (7), a radial centering shaft (8) and a spring pressing piece (9), the steel ball (7) and the radial centering shaft (8) are located inside the through hole (6), the spring pressing piece (9) is fixedly installed inside 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).
5. An expanding and retracting positioning mandrel assembly as claimed in claim 4, wherein: the outer surface of the expansion mandrel (4) close to the upper end is a conical surface, and one end, far away from the radial centering shaft (8), of the steel ball (7) is connected with the conical surface.
6. An expanding and retracting positioning mandrel assembly as claimed in claim 4, wherein: 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 hole (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 true CN112496371A (en) | 2021-03-16 |
| CN112496371B CN112496371B (en) | 2024-04-09 |
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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 |
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| Country | Link |
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| 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 |
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| Publication number | Publication date |
|---|---|
| CN112496371B (en) | 2024-04-09 |
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