CN113894301A - A positioning fixture for turning - Google Patents
A positioning fixture for turning Download PDFInfo
- Publication number
- CN113894301A CN113894301A CN202111208765.0A CN202111208765A CN113894301A CN 113894301 A CN113894301 A CN 113894301A CN 202111208765 A CN202111208765 A CN 202111208765A CN 113894301 A CN113894301 A CN 113894301A
- Authority
- CN
- China
- Prior art keywords
- positioning
- nut
- thread
- inner hole
- positioning rod
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
-
- 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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
本发明公开了一种用于车削加工的定位夹具，它包括弹簧夹头（1）、定位杆（2）、定位螺母（3）和紧固螺母（4）；所述弹簧夹头（1）的内孔后段与定位螺母（3）外圆柱螺纹配合装接，定位杆（2）伸入弹簧夹头的内孔底部、且与定位螺母（3）内螺纹配合组装，紧固螺母（4）套在定位杆（2）上压紧定位螺母（3）外端面，以确保定位杆（2）轴向可靠固定。本发明的优点是：提高了工件加工定位精度和转产效率。
The invention discloses a positioning fixture for turning processing, which comprises a spring chuck (1), a positioning rod (2), a positioning nut (3) and a tightening nut (4); the spring chuck (1) The rear section of the inner hole of the locating nut (3) is assembled with the outer cylindrical thread of the locating nut (3). ) on the positioning rod (2) and press the outer end face of the positioning nut (3) to ensure that the positioning rod (2) is reliably fixed in the axial direction. The advantages of the invention are: the workpiece machining positioning accuracy and the production conversion efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a positioning clamp for turning.
Background
When an existing numerical control lathe is machined, a positioning device can be manufactured according to the condition of a machined part, and as shown in figures 1-3, the positioning device is respectively an assembly structure schematic diagram, a spring chuck structure schematic diagram and a positioning mandrel structure schematic diagram. The workpiece is clamped by the spring chuck, the positioning mandrel is used for axially positioning the workpiece, and the positioning mandrel is inserted into the tail hole of the spring chuck and clamped by the positioning pin. The positioning device has the following defects:
1. the positioning mandrel of the positioning device is arranged in the spring chuck, cannot be completely fixed in the axial direction, and has poor positioning precision, so that the product percent of pass is influenced;
2. the positioning core shaft of the positioning device is not hardened, and the positioning surface is easy to wear or deform, so that the positioning precision is influenced;
3. the self-made positioning device is a special tool, the universality is poor, and the production conversion efficiency is low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a positioning clamp for turning, which can improve the positioning precision of a workpiece.
The technical problem to be solved by the invention is realized by the technical scheme, which comprises a spring chuck, a positioning rod, a positioning nut and a fastening nut; the inner hole rear section of the spring chuck is connected with the outer cylinder of the positioning nut in a threaded fit mode, the positioning rod extends into the bottom of the inner hole of the spring chuck and is assembled with the inner thread of the positioning nut in a matched mode, and the fastening nut is sleeved on the positioning rod to tightly press the outer end face of the positioning nut so as to ensure that the positioning rod is axially and reliably fixed.
Compared with the prior art, the invention has the advantages that:
1. all parts of the invention are connected by threads, and are positioned and fastened by positioning nuts, thus ensuring the positioning precision;
2. the positioning rod is subjected to heat treatment processing, so that the wear resistance and the strength are improved, and the positioning precision is ensured;
3. the invention can meet the use requirement only by adjusting the length of the positioning rod after processing the head of the positioning rod according to the condition of the processed product, and has good universality and high production conversion efficiency.
Drawings
The drawings of the invention are illustrated as follows:
FIG. 1 is a schematic view of an assembly structure of a positioning device according to the prior art;
FIG. 2 is a schematic view of the collet of FIG. 1;
FIG. 3 is a schematic view of the positioning mandrel of FIG. 1;
FIG. 4 is a schematic structural view of the present invention;
FIG. 5 is a schematic view of the collet;
FIG. 6 is a schematic structural view of a positioning nut;
FIG. 7 is a schematic structural view of a positioning rod;
fig. 8 is a schematic structural view of the fastening nut.
In the figure, 1, a spring chuck; 11. a jaw; 12. an inner bore; 2. positioning a rod; 3. positioning a nut; 4. fastening a nut; 5. and (5) a workpiece.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 4, the present invention comprises a collet chuck 1, a positioning rod 2, a positioning nut 3 and a fastening nut 4; the hole back end of collet chuck 1 connects with 3 outer cylinder screw-thread fit dress of set nut, and locating lever 2 stretches into collet chuck's hole bottom, and with 3 interior screw-thread fit equipment of set nut, and fastening nut 4 covers compresses tightly 3 outer terminal surfaces of set nut on locating lever 2 to ensure that 2 axial of locating lever are reliably fixed.
As shown in fig. 5, the collet chuck 1 is provided with a jaw 11 for clamping a workpiece 5 and an inner hole 12, and the rear section of the inner hole 12 is provided with an internal thread I matched with the external cylindrical thread of the positioning nut 3. The collet chuck 1 is a chuck for a numerical control lathe, is made of spring steel, has certain elasticity, can be automatically closed when being clamped, and can be automatically opened when being loosened.
As shown in fig. 6, the outer cylinder front section of the positioning nut 3 is provided with an external thread I matched with the internal thread of the collet chuck 1, and the inner hole of the positioning nut 3 is provided with an internal thread II matched with the positioning rod 2. The unprocessed thread section of the outer cylinder of the positioning nut 3 is processed into a symmetrical square shape, so that the clamping and the screwing are convenient.
As shown in fig. 7, the cylindrical surface of the positioning rod 2 is provided with an external thread ii which is matched with the positioning nut 3 and the fastening nut 4. And two end faces of the positioning rod 2 are subjected to finish machining, so that the surface roughness, the planeness and the verticality are ensured, and the requirement on axial high-precision positioning is met.
As shown in fig. 8, an inner hole of the fastening nut 4 is provided with an internal thread ii matched with the external thread of the positioning rod 2; the shape of the fastening nut 4 is hexagonal, so that the fastening nut is convenient to clamp and screw.
As shown in FIG. 4, the invention axially positions the workpiece according to the length, clamps the workpiece according to the processing requirements of each process, and then screws the fastening nut to ensure the axial reliable positioning of the workpiece.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208765.0A CN113894301A (en) | 2021-10-18 | 2021-10-18 | A positioning fixture for turning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208765.0A CN113894301A (en) | 2021-10-18 | 2021-10-18 | A positioning fixture for turning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113894301A true CN113894301A (en) | 2022-01-07 |
Family
ID=79192640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111208765.0A Pending CN113894301A (en) | 2021-10-18 | 2021-10-18 | A positioning fixture for turning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113894301A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257595B1 (en) * | 1998-09-04 | 2001-07-10 | Hardinge Inc. | Collect chuck with quick-change cap |
| CN202137619U (en) * | 2011-07-13 | 2012-02-08 | 贵州航天精工制造有限公司 | Positioning device for workpieces of numerical-control lathe |
| CN204868272U (en) * | 2015-06-19 | 2015-12-16 | 航天精工股份有限公司 | CNC numerical control lathe axial positioning device |
| CN105215392A (en) * | 2015-11-17 | 2016-01-06 | 上海衡拓液压控制技术有限公司 | The adjustable interior locating device of smooth turning lathe collet |
| CN216575556U (en) * | 2021-10-18 | 2022-05-24 | 重庆嘉陵特种装备有限公司 | Positioning fixture for turning |
-
2021
- 2021-10-18 CN CN202111208765.0A patent/CN113894301A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257595B1 (en) * | 1998-09-04 | 2001-07-10 | Hardinge Inc. | Collect chuck with quick-change cap |
| CN202137619U (en) * | 2011-07-13 | 2012-02-08 | 贵州航天精工制造有限公司 | Positioning device for workpieces of numerical-control lathe |
| CN204868272U (en) * | 2015-06-19 | 2015-12-16 | 航天精工股份有限公司 | CNC numerical control lathe axial positioning device |
| CN105215392A (en) * | 2015-11-17 | 2016-01-06 | 上海衡拓液压控制技术有限公司 | The adjustable interior locating device of smooth turning lathe collet |
| CN216575556U (en) * | 2021-10-18 | 2022-05-24 | 重庆嘉陵特种装备有限公司 | Positioning fixture for turning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220107 |