CN110900272A - Hollow three-jaw hydraulic self-centering chuck axial positioning device - Google Patents
Hollow three-jaw hydraulic self-centering chuck axial positioning device Download PDFInfo
- Publication number
- CN110900272A CN110900272A CN201911229187.1A CN201911229187A CN110900272A CN 110900272 A CN110900272 A CN 110900272A CN 201911229187 A CN201911229187 A CN 201911229187A CN 110900272 A CN110900272 A CN 110900272A
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- China
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- hollow
- outer sleeve
- positioning
- centering chuck
- jaw hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses an axial positioning device of a hollow three-jaw hydraulic self-centering chuck, wherein the hollow three-jaw hydraulic self-centering chuck is fixedly connected with a hollow main shaft of a numerical control lathe, the positioning device comprises an outer sleeve, a positioning mandrel and a locking nut, the outer sleeve is a hollow cylinder, one end of the outer sleeve is open, the other end of the outer sleeve is provided with a through hole, the outer sleeve is fixed between the hollow three-jaw hydraulic self-centering chuck and the hollow main shaft of the numerical control lathe, the open end of the outer sleeve faces the hollow three-jaw hydraulic self-centering chuck, one end of the positioning mandrel penetrates through the through hole and is in threaded connection with the through hole, and the locking nut is sleeved. The positioning device is specially used between a hollow three-jaw hydraulic self-centering chuck and a hollow spindle of a numerical control lathe, is used for fixing shaft parts, has a simple structure, is accurate in positioning, can be suitable for positioning shaft parts with different lengths, and is wide in application range.
Description
Technical Field
The invention relates to the field of mechanical positioning devices, in particular to an axial positioning device of a hollow three-jaw hydraulic self-centering chuck.
Background
The shaft parts are generally made of bar materials, the processing method generally comprises the steps of firstly processing one end, turning around after the processing of the one end is finished, secondarily clamping and processing the other end of the part, and generally directly processing after the total length is ensured or processing in a mode of clamping one end by one top; because the middle of a three-jaw hydraulic self-centering clamping jaw on a numerical control lathe is hollow, axial positioning of shaft parts cannot be achieved during clamping, the end faces of the shaft parts are usually machined on the lathe, then the parts are taken down and are measured, and the length and the size can be guaranteed only through machine tool deflection. Therefore, the machining efficiency is too low, the size is inaccurate, the operation is inconvenient, and the position change can be generated when the parts are machined by secondary clamping, so that the problem that the sizes of the parts are unqualified is caused.
Disclosure of Invention
In order to solve the technical problem, the invention provides an axial positioning device of a hollow three-jaw hydraulic self-centering chuck, which has the advantages of simple structure, accurate positioning, wide application range and suitability for positioning shaft parts with different lengths.
The utility model provides a cavity three-jaw hydraulic pressure is from centering chuck axial positioner, cavity three-jaw hydraulic pressure is from centering chuck and the hollow main shaft fixed connection of numerical control lathe, and this positioner includes outer sleeve, location mandrel and lock nut, the outer sleeve is the cavity drum, and one end opening, the other end are equipped with the through-hole, the outer sleeve is fixed between cavity three-jaw hydraulic pressure is from centering chuck and the hollow main shaft of numerical control lathe, and the open end of outer sleeve is towards cavity three-jaw hydraulic pressure from centering chuck, location mandrel one end is passed the through-hole, with through-hole threaded connection, the lock nut cover is established on the location mandrel for locking location mandrel and outer sleeve.
Preferably, the outer sleeve is provided with a positioning boss at the outer edge of the opening end of the outer sleeve, the positioning boss is clamped between the hollow three-jaw hydraulic self-centering chuck and the hollow spindle of the numerical control lathe, and the outer surface of the outer sleeve abuts against the inner surface of the hollow spindle of the numerical control lathe.
Preferably, the positioning mandrel is fixed with a limiting seat at one end close to the opening of the outer sleeve.
Preferably, a fastening part is fixed to one end of the positioning mandrel, which is far away from the limiting seat.
The invention has the beneficial effects that:
the positioning device can meet the processing and positioning requirements of shaft parts with different lengths, has consistency in axial positioning of the parts when processing a batch of shaft parts with the same size, has the characteristics of high positioning precision, convenience in operation, scientific structure and the like, can ensure the machining precision of the shaft parts, and can improve the processing efficiency of products.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The reference numbers are as follows: 1-hollow three-jaw hydraulic self-centering chuck, 2-numerical control lathe hollow spindle, 3-outer sleeve, 4-positioning mandrel, 5-locking nut, 6-through hole, 7-positioning boss, 8-limiting seat and 9-screwing part.
Detailed Description
The present embodiment is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the hollow three-jaw hydraulic self-centering chuck axial positioning device comprises an outer sleeve 3, a positioning mandrel 4 and a locking nut 5, wherein the outer sleeve 3 is a hollow cylinder, one end of the outer sleeve is open, the other end of the outer sleeve is provided with a through hole 6, the outer sleeve 3 is fixed between the hollow three-jaw hydraulic self-centering chuck 1 and the hollow main shaft 2 of the numerical control lathe, the open end of the outer sleeve 3 faces the hollow three-jaw hydraulic self-centering chuck 1, one end of the positioning mandrel 4 penetrates through the through hole 6 and is in threaded connection with the through hole 6, and the locking nut 5 is sleeved on the positioning mandrel 4 and used for locking the positioning mandrel 4 and the outer sleeve 3.
In this embodiment, the outer sleeve 3 is provided with a positioning boss 7 at the outer edge of the opening end thereof, the positioning boss 7 is clamped between the hollow three-jaw hydraulic self-centering chuck 1 and the hollow spindle 2 of the numerically controlled lathe, and the outer surface of the outer sleeve 3 abuts against the inner surface of the hollow spindle 1 of the numerically controlled lathe.
In this embodiment, the positioning spindle 4 is fixed with a limit seat 8 at one end near the opening of the outer sleeve 3.
In this embodiment, a fastening portion 9 is fixed to an end of the positioning mandrel 4 away from the limiting seat 9.
In the embodiment, the clearance between the hollow three-jaw hydraulic self-centering chuck 1 and the hollow main shaft 2 of the numerical control lathe is 1.5mm, and the thickness of the positioning boss 7 of the outer sleeve 3 positioned at the outer edge of the opening end of the outer sleeve is 1.5mm +/-0.02 mm, so that the outer sleeve 3 can be effectively fixed between the hollow three-jaw hydraulic self-centering chuck 1 and the hollow main shaft 2 of the numerical control lathe. When this positioner location axle type part, at first pass axle type part cavity three-jaw hydraulic pressure from centering chuck 1 and spacing seat 8 support tightly, through rotatory portion 9 adjustment axle type part's of screwing extension length, adjust axle type part to suitable position after, fix location mandrel 4 and outer sleeve 3 through lock nut 5, can begin to process axle type part with cavity three-jaw hydraulic pressure from centering chuck 1 after firm with axle type part centre gripping. When the same batch of secondary shaft parts are processed, the positions of the positioning mandrel 4 and the locking nut 5 are not adjusted any more, so that the consistency of the processing size is ensured.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a cavity three-jaw hydraulic pressure is from centering chuck axial positioner, cavity three-jaw hydraulic pressure is from centering chuck and the hollow main shaft fixed connection of numerical control lathe, its characterized in that: the outer sleeve is a hollow cylinder, an opening is formed in one end of the outer sleeve, a through hole is formed in the other end of the outer sleeve, the outer sleeve is fixed between a hollow three-jaw hydraulic self-centering chuck and a hollow main shaft of a numerical control lathe, the opening end of the outer sleeve faces the hollow three-jaw hydraulic self-centering chuck, one end of the positioning mandrel penetrates through the through hole and is in threaded connection with the through hole, and the locking nut is sleeved on the positioning mandrel and used for locking the positioning mandrel and the outer sleeve.
2. The positioning device of claim 1, wherein: the outer sleeve is provided with a positioning boss at the outer edge of the opening end of the outer sleeve, the positioning boss is clamped between the hollow three-jaw hydraulic self-centering chuck and the hollow spindle of the numerical control lathe, and the outer surface of the outer sleeve abuts against the inner surface of the hollow spindle of the numerical control lathe.
3. The positioning device of claim 1, wherein: and a limiting seat is fixed at one end of the positioning mandrel close to the opening of the outer sleeve.
4. The positioning device of claim 3, wherein: and a screwing part is fixed at one end of the positioning mandrel far away from the limiting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911229187.1A CN110900272A (en) | 2019-12-04 | 2019-12-04 | Hollow three-jaw hydraulic self-centering chuck axial positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911229187.1A CN110900272A (en) | 2019-12-04 | 2019-12-04 | Hollow three-jaw hydraulic self-centering chuck axial positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110900272A true CN110900272A (en) | 2020-03-24 |
Family
ID=69822152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911229187.1A Pending CN110900272A (en) | 2019-12-04 | 2019-12-04 | Hollow three-jaw hydraulic self-centering chuck axial positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110900272A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117340530A (en) * | 2023-12-06 | 2024-01-05 | 成都晨发泰达航空科技股份有限公司 | Self-centering welding tool for bevel gear and repairing method |
-
2019
- 2019-12-04 CN CN201911229187.1A patent/CN110900272A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117340530A (en) * | 2023-12-06 | 2024-01-05 | 成都晨发泰达航空科技股份有限公司 | Self-centering welding tool for bevel gear and repairing method |
| CN117340530B (en) * | 2023-12-06 | 2024-02-09 | 成都晨发泰达航空科技股份有限公司 | Self-centering welding tool for bevel gear and repairing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200324 |
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| WD01 | Invention patent application deemed withdrawn after publication |