CN104858695A - Inner hole self-centering clamp for long thin-walled part - Google Patents
Inner hole self-centering clamp for long thin-walled part Download PDFInfo
- Publication number
- CN104858695A CN104858695A CN201410063175.7A CN201410063175A CN104858695A CN 104858695 A CN104858695 A CN 104858695A CN 201410063175 A CN201410063175 A CN 201410063175A CN 104858695 A CN104858695 A CN 104858695A
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- China
- Prior art keywords
- axle
- cone
- hole
- thin
- endoporus
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- Pending
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to an inner hole self-centering clamp for a long thin-walled part. The clamp comprises a mandrel, a multi-stage cone shaft and an end cover, wherein a positioning step is arranged at one end of a positioning column of the mandrel; the excircle of the mandrel is a positioning column surface; an inner hole is formed in the positioning column surface of the mandrel; a threaded hole is formed in the top end of the inner hole; at least two groups of radial through holes are formed in the positioning column of the mandrel in the axial direction; each group of radial through holes comprise three or four radial through holes uniformly distributed in the same cross section of the positioning column; positioning clamping columns are connected into the radial through holes in a clearance fit manner; the multi-stage cone shaft is connected into the inner hole of the mandrel in a clearance fit manner; the front end of the multi-stage cone shaft is in threaded connection with the threaded hole in the top end of the inner hole; the rear end of the multi-stage cone shaft is connected with an internal hole of the end cover in a clearance fit manner, and the end cover is fixedly connected onto the rear end of the positioning column; conical columns corresponding to the groups of radial through holes are arranged in the middle of the multi-stage cone shaft; each conical column comprises a front-end circular truncated cone and a rear-end circular truncated cone; the conical column surface of each conical column is contacted and connected with the bottom end of the corresponding positioning clamping column.
Description
Technical field
The present invention relates to a kind of thin-walled parts centralizer, particularly a kind of self-centering fixture of thin-walled parts.
Background technology
In machining, some workpiece are positioned by its endoporus and are clamped, and existing fixture or complicated structure, be exactly unload cumbersome, and order scarcely can realize self-centering, often can not satisfy condition requirement, causes machining accuracy poor.Therefore, Chinese invention patent application number: 201110286659.4, disclose a kind of self-centering fixture, axle is the cone of hollow, and the external diameter of nearly ring flange end is greater than the external diameter of ring flange end far away, the ring flange end far away of axle has one section of external screw thread, this section of external screw thread place is equipped with adjusting nut, the outer circumference of axle is arranged with a slidably baffle ring, axle is provided with a pair along the chute distributed in axle, the axle center of axle is hung with a pull bar, one end of pull bar and baffle ring are fixed by a pin, pin is through in a pair chute, and can slide along it, the other end of pull bar is fixed with a catch, the inwall of expansion set is the conicoid matched with the outer wall of axle, outer wall is column face, the nearly ring flange end of expansion set has the locating ring for axial location workpiece of circumference protrusion, expansion set axially offers multiple expansion joint being convenient to expand and shrink, expansion set is set between baffle ring and adjusting nut, when adjusting nut is to when the direction turn of described ring flange, the direction that expansion set increases to the external diameter of axle is moved and makes enlarged outside diameter, thus offset with the inwall of workpiece, when adjusting nut is to direction turn away from ring flange, the catch described in adjusting nut drives, by pull bar and baffle ring, makes expansion set move to the direction of the reduced diameter of described axle, the reduced diameter of expansion set and being separated with the inwall of workpiece.But this fixture is in the process of clamping thin-walled parts, easily thin-walled parts is caused to be out of shape.Particularly the distortion of thin-walled elongated workpieces is larger.
Summary of the invention
The present invention is the technical problem clamping machining deformation that will solve thin-walled elongated workpieces, provides a kind of thin-walled elongated workpieces inner bore self-centring clamp.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of thin-walled elongated workpieces inner bore self-centring clamp, comprise axle, the multistage axis of cone, end cap, locating dowel one end of axle is provided with positioning step, axle cylindrical is location cylinder, an endoporus is provided with in the location cylinder of axle, endoporus top is provided with screwed hole, the locating dowel of axle has vertically at least two group radial direction through hole, often organize radial direction through hole on the same cross section of locating dowel, be evenly equipped with three or four radial direction through hole, in radial direction through hole, activity is connected location clamping column, in the endoporus of axle, activity is connected the multistage axis of cone, multistage axis of cone front end is threaded with the screwed hole on endoporus top, multistage axis of cone rear end and the end cap endoporus activity be fixedly connected on locating dowel rear end are connected, the circular cone post corresponding with often organizing radial direction through hole is provided with in the middle part of the multistage axis of cone, each circular cone post is made up of nose circle frustum and back end cylindrical platform, the circular cone cylinder of each circular cone post contacts with the bottom of location clamping column and connects.
The locating dowel of axle is connected with thin-walled elongated workpieces endoporus matched in clearance.Multistage axis of cone rear end is provided with rotary handle.End cap cylindrical is threaded end face clamp nut.
The invention has the beneficial effects as follows: structure is simple, workpiece easy to loading and unloading, and can self-centering be realized, after particularly employing location clamping column, in the process of clamping thin-walled elongated workpieces, thin-walled elongated workpieces deflection is little, and positioning precision is high, axiality and the perpendicularity of the thin-walled elongated workpieces after processing can be ensured, and be convenient to the handling of thin-walled elongated workpieces.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the present invention when locating clamping thin-walled elongated workpieces;
Fig. 2 is the sectional view along A-A in Fig. 1;
Fig. 3 is the structure sectional view of the present invention when loosening clamping thin-walled elongated workpieces.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1 to Figure 3, a kind of thin-walled elongated workpieces inner bore self-centring clamp, comprises axle 1, the multistage axis of cone 2, location clamping column 3, end cap 4, end face clamp nut 5, rotary handle 6.
Locating dowel one end of axle 1 is provided with positioning step, axle 1 cylindrical is location cylinder, an endoporus is provided with in the location cylinder of axle 1, endoporus top is provided with screwed hole, the locating dowel of axle 1 has vertically at least two group radial direction through hole, often organize radial direction through hole on the same cross section of locating dowel, be evenly equipped with three or four radial direction through hole, in radial direction through hole, activity is connected and locates clamping column 3, in the endoporus of axle 1, activity is connected the multistage axis of cone 2, the multistage axis of cone 2 front end is threaded with the screwed hole on endoporus top, the multistage axis of cone 2 rear end and the end cap 4 endoporus activity be fixedly connected on locating dowel rear end are connected, the circular cone post corresponding with often organizing radial direction through hole is provided with in the middle part of the multistage axis of cone 2, each circular cone post is made up of nose circle frustum and back end cylindrical platform, the circular cone cylinder of each circular cone post contacts with the bottom of location clamping column 3 and connects.
The locating dowel of axle 1 is connected with thin-walled elongated workpieces 7 endoporus matched in clearance.The multistage axis of cone 2 rear end is provided with rotary handle 6.End cap 4 cylindrical is threaded end face clamp nut 5.
As shown in Figure 1, when the multistage axis of cone 2 is to when the direction precession of mandrels backend step surface, location clamping column 3 outward direction in the multistage axis of cone 2 moves, and the contact internal walls of its head and thin-walled elongated workpieces 7 pushes against.
As shown in Figure 3, when the multistage axis of cone 2 screws out to the direction away from mandrels backend step end face, the location clamping column 3 in the multistage axis of cone 2 is separated with the inwall of thin-walled elongated workpieces 7.
Claims (4)
1. a thin-walled elongated workpieces inner bore self-centring clamp, comprise axle (1), the multistage axis of cone (2), end cap (4), it is characterized in that: locating dowel one end of described axle (1) is provided with positioning step, axle (1) cylindrical is location cylinder, an endoporus is provided with in the location cylinder of axle (1), endoporus top is provided with screwed hole, the locating dowel of axle (1) has vertically at least two group radial direction through hole, often organize radial direction through hole on the same cross section of locating dowel, be evenly equipped with three or four radial direction through hole, in radial direction through hole, activity is connected and locates clamping column (3), in the endoporus of axle (1), activity is connected the multistage axis of cone (2), the multistage axis of cone (2) front end is threaded with the screwed hole on endoporus top, the multistage axis of cone (2) rear end and end cap (4) the endoporus activity be fixedly connected on locating dowel rear end are connected, the multistage axis of cone (2) middle part is provided with the circular cone post corresponding with often organizing radial direction through hole, each circular cone post is made up of nose circle frustum and back end cylindrical platform, the circular cone cylinder of each circular cone post contacts with the bottom of location clamping column and connects.
2. thin-walled elongated workpieces inner bore self-centring clamp according to claim 1, is characterized in that: the locating dowel of described axle (1) is connected with thin-walled elongated workpieces (7) endoporus matched in clearance.
3. thin-walled elongated workpieces inner bore self-centring clamp according to claim 1, is characterized in that: the described multistage axis of cone (2) rear end is provided with rotary handle (6).
4. thin-walled elongated workpieces inner bore self-centring clamp according to claim 1, is characterized in that: described end cap (4) cylindrical is threaded end face clamp nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063175.7A CN104858695A (en) | 2014-02-23 | 2014-02-23 | Inner hole self-centering clamp for long thin-walled part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063175.7A CN104858695A (en) | 2014-02-23 | 2014-02-23 | Inner hole self-centering clamp for long thin-walled part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104858695A true CN104858695A (en) | 2015-08-26 |
Family
ID=53905086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063175.7A Pending CN104858695A (en) | 2014-02-23 | 2014-02-23 | Inner hole self-centering clamp for long thin-walled part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664586A (en) * | 2021-08-13 | 2021-11-19 | 江阴市龙玉锻压有限公司 | Long cylindrical forging processing tool |
-
2014
- 2014-02-23 CN CN201410063175.7A patent/CN104858695A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664586A (en) * | 2021-08-13 | 2021-11-19 | 江阴市龙玉锻压有限公司 | Long cylindrical forging processing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |
|
| WD01 | Invention patent application deemed withdrawn after publication |