CN112571130A - Clamping device for machining outer diameter of rotary thin-wall part - Google Patents
Clamping device for machining outer diameter of rotary thin-wall part Download PDFInfo
- Publication number
- CN112571130A CN112571130A CN202011286862.7A CN202011286862A CN112571130A CN 112571130 A CN112571130 A CN 112571130A CN 202011286862 A CN202011286862 A CN 202011286862A CN 112571130 A CN112571130 A CN 112571130A
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- CN
- China
- Prior art keywords
- centering ring
- thin
- positioning sleeve
- rotary thin
- outer diameter
- 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
- 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
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a clamping device for machining the outer diameter of a rotary thin-wall part, and belongs to the technical field of tool fixtures. The device comprises a centering ring, an axial positioning sleeve and an ejector rod; the aperture of the centering ring, the outer diameter of the axial positioning sleeve and the outer diameter of the rotary thin-wall part to be processed are consistent in size; the axial positioning sleeve is fixed on a rotating main shaft of the machine tool, and the ejector rod is fixed on a tailstock of the machine tool; the rotary thin-wall parts are stacked in the inner hole of the centering ring, the centering ring is in hole-shaft fit with the axial positioning sleeve, the end face of the axial positioning sleeve is axially limited to the stacked rotary thin-wall parts, the inner hole of the centering ring is radially limited to the stacked rotary thin-wall parts, the ejector rod applies axial pressure to the stacked rotary thin-wall parts to complete clamping, and the outer circle of the stacked rotary thin-wall parts can be machined after the centering ring is axially withdrawn. The invention can realize the positioning and reliable clamping of the rotary thin-wall part and meet the requirement of subsequent machining of the rotary thin-wall part.
Description
Technical Field
The invention relates to a clamping device for processing the outer diameter of a thin-wall part, and belongs to the technical field of tool fixtures.
Background
For a stamped part, the size of a product stamped by a pair of dies is certain, and only a pair of dies can be prepared again or the product can be machined secondarily to change the outer diameter of the product.
For a round thin-wall part which is only 0.05mm thick and is formed by stamping and molding and is shown in figure 1, the wall is thin and easy to deform, and the conventional tool clamp and the processing mode can not clamp the round thin-wall part at all, not to mention the outer diameter of the round thin-wall part.
Disclosure of Invention
In view of the above, the invention provides a clamping device for machining the outer diameter of a rotary thin-wall part, which can realize positioning and reliable clamping of the rotary thin-wall part and meet the requirement of subsequent machining of the rotary thin-wall part.
A clamping device for machining the outer diameter of a rotary thin-wall part comprises a centering ring, an axial positioning sleeve and an ejector rod;
the aperture of the centering ring, the outer diameter of the axial positioning sleeve and the outer diameter of the rotary thin-wall part to be processed are consistent in size;
the axial positioning sleeve is fixed on a rotating main shaft of the machine tool, and the ejector rod is fixed on a tailstock of the machine tool; the rotary thin-wall parts are stacked in the inner hole of the centering ring, the centering ring is in hole-shaft fit with the axial positioning sleeve, the end face of the axial positioning sleeve is axially limited to the stacked rotary thin-wall parts, the inner hole of the centering ring is radially limited to the stacked rotary thin-wall parts, the ejector rod applies axial pressure to the stacked rotary thin-wall parts to complete clamping, and the outer circle of the stacked rotary thin-wall parts can be machined after the centering ring is axially withdrawn.
Further, the axial positioning sleeve is fixed on the rotary spindle through a three-jaw chuck of the machine tool.
Further, the fit tolerance between the centering ring and the axial positioning sleeve is +/-0.02 mm.
Further, the fit tolerance between the centering ring and the rotary thin-wall part is 0.04 mm.
Further, the centering ring, the axial positioning sleeve and the ejector rod are machined from brass or aluminum.
Has the advantages that:
1. the centering ring is ingeniously used for centering a plurality of rotary thin-wall parts by matching the hole shaft of the centering ring and the hole shaft of the axial positioning sleeve, the centering is completed, the push rod is used for axially pressing the rotary thin-wall parts, the coaxiality of the parts is ensured, the rigidity of a single part is enhanced by stacking the parts, the single part can bear axial pressing force to complete the processing of the excircle of the single part, and the processing precision and the processing efficiency can be ensured.
2. The invention sets the matching tolerance among the centering ring, the axial positioning sleeve and the rotary thin-wall part, so that the clamping stagnation of each part in the assembling process is avoided, and the dimensional precision after processing can be ensured.
3. The centering ring, the axial positioning sleeve and the ejector rod are processed by brass or aluminum, and the two materials have certain ductility, so that the thin-wall rotary part can be effectively protected from being worn in the assembling process, and the processing precision of the product can be guaranteed.
Drawings
FIG. 1 is a schematic view of a workpiece structure;
FIG. 2 is a schematic structural diagram of the clamping device for outer diameter machining of the thin-walled revolving parts of the present invention.
Wherein, 1-centering ring, 2-axial positioning sleeve, 3-ejector rod, 4-rotary thin-wall part.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in the attached figure 2, the invention provides a clamping device for machining the outer diameter of a rotary thin-wall part, which comprises a centering ring 1, an axial positioning sleeve 2 and an ejector rod 3; the components are all processed by brass or aluminum.
The hole diameter of the centering ring 1, the outer diameter of the axial positioning sleeve 2 and the outer diameter of the rotary thin-wall part 4 to be processed are consistent in size; the fit tolerance between the centering ring 1 and the axial positioning sleeve 2 is +/-0.02 mm, and the fit tolerance between the centering ring 1 and the rotary thin-wall part 4 is +/-0.03 mm.
One end of the axial positioning sleeve 2 is fixed on a rotating main shaft of the machine tool through a three-jaw chuck of the machine tool, and the ejector rod 3 is fixed on a tailstock of the machine tool; the ten rotary thin-wall parts 4 are overlapped and placed in the inner hole of the centering ring 1, after the inner hole of the centering ring 1 is in hole-shaft fit with the outer circle of the other end of the axial positioning sleeve 2, the end face of the axial positioning sleeve 2 carries out axial limiting on the stacked rotary thin-wall parts 4, the inner hole of the centering ring 1 carries out radial limiting on the stacked rotary thin-wall parts 4, and the center positioning of the ten rotary thin-wall parts 4 is completed. Then, a handle of the tailstock is rotated to enable the ejector rod 3 to move linearly along the axial direction, axial pressure is applied to the stacked rotary thin-wall parts 4 after the end faces of the ejector rod 3 are in contact with the stacked rotary thin-wall parts 4, clamping of the rotary thin-wall parts 4 is completed through the ejector rod 3, the centering ring 1 is withdrawn from the rotary thin-wall parts 4 to the position of a dotted line shown in the figure 2 along the axial direction, after withdrawal, the machine tool can be started to enable the three-jaw chuck to drive the axial positioning sleeve 2 to rotate, and the outer circles of the stacked rotary thin-wall parts 4 are machined through a lathe tool on a tool rest of.
In order to avoid the contact of a turning tool with the end surface of the axial positioning sleeve 2 in the turning process, a tool withdrawal groove can be machined on the end surface of the axial positioning sleeve.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. 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 (5)
1. A clamping device for machining the outer diameter of a rotary thin-wall part is characterized by comprising a centering ring, an axial positioning sleeve and an ejector rod;
the aperture of the centering ring, the outer diameter of the axial positioning sleeve and the outer diameter of the rotary thin-wall part to be processed are consistent in size;
the axial positioning sleeve is fixed on a rotating main shaft of the machine tool, and the ejector rod is fixed on a tailstock of the machine tool; the rotary thin-wall parts are stacked in the inner hole of the centering ring, the centering ring is in hole-shaft fit with the axial positioning sleeve, the end face of the axial positioning sleeve is axially limited to the stacked rotary thin-wall parts, the inner hole of the centering ring is radially limited to the stacked rotary thin-wall parts, the ejector rod applies axial pressure to the stacked rotary thin-wall parts to complete clamping, and the outer circle of the stacked rotary thin-wall parts can be machined after the centering ring is axially withdrawn.
2. The clamping device for the outer diameter machining of the thin-walled revolving part according to claim 1, wherein the axial locating sleeve is fixed on the rotating spindle through a three-jaw chuck of a machine tool.
3. The clamping device for the outer diameter machining of the thin-walled revolving part according to claim 2, wherein the fit tolerance between the centering ring and the axial positioning sleeve is ± 0.02 mm.
4. The clamping device for the outer diameter machining of the thin-wall rotating part according to claim 3, wherein the fit tolerance between the centering ring and the thin-wall rotating part is +/-0.03 mm.
5. The clamping device for the outer diameter machining of the thin-walled rotary part according to claim 4, wherein the centering ring, the axial positioning sleeve and the ejector rod are machined from brass or aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286862.7A CN112571130A (en) | 2020-11-17 | 2020-11-17 | Clamping device for machining outer diameter of rotary thin-wall part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286862.7A CN112571130A (en) | 2020-11-17 | 2020-11-17 | Clamping device for machining outer diameter of rotary thin-wall part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112571130A true CN112571130A (en) | 2021-03-30 |
Family
ID=75122738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011286862.7A Pending CN112571130A (en) | 2020-11-17 | 2020-11-17 | Clamping device for machining outer diameter of rotary thin-wall part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112571130A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348684A1 (en) * | 1988-06-29 | 1990-01-03 | The Cross Company | Method and apparatus for locating and clamping a workpiece, such as a piston, prior to rotating same in a machining operation |
| CN2905279Y (en) * | 2006-05-28 | 2007-05-30 | 山推工程机械股份有限公司 | Pedrail pin bush fine-machining device |
| CN104001951A (en) * | 2014-05-04 | 2014-08-27 | 洛阳维斯格轴承有限公司 | Clamp device for uniform-section ultra-thin-wall bearing ring outer surface turning |
| CN204584752U (en) * | 2015-02-09 | 2015-08-26 | 河北师范大学 | A kind of special fixture of lathe process thin-wall workpiece |
| CN205587671U (en) * | 2016-05-11 | 2016-09-21 | 贵州航太精密制造有限公司 | Accurate packing ring turning sleeve composite set |
| CN111299615A (en) * | 2020-03-20 | 2020-06-19 | 中国航发哈尔滨东安发动机有限公司 | Machining method for aviation thin-wall part based on machine-clamp integrated clamping |
-
2020
- 2020-11-17 CN CN202011286862.7A patent/CN112571130A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348684A1 (en) * | 1988-06-29 | 1990-01-03 | The Cross Company | Method and apparatus for locating and clamping a workpiece, such as a piston, prior to rotating same in a machining operation |
| CN2905279Y (en) * | 2006-05-28 | 2007-05-30 | 山推工程机械股份有限公司 | Pedrail pin bush fine-machining device |
| CN104001951A (en) * | 2014-05-04 | 2014-08-27 | 洛阳维斯格轴承有限公司 | Clamp device for uniform-section ultra-thin-wall bearing ring outer surface turning |
| CN204584752U (en) * | 2015-02-09 | 2015-08-26 | 河北师范大学 | A kind of special fixture of lathe process thin-wall workpiece |
| CN205587671U (en) * | 2016-05-11 | 2016-09-21 | 贵州航太精密制造有限公司 | Accurate packing ring turning sleeve composite set |
| CN111299615A (en) * | 2020-03-20 | 2020-06-19 | 中国航发哈尔滨东安发动机有限公司 | Machining method for aviation thin-wall part based on machine-clamp integrated clamping |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210330 |
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| WD01 | Invention patent application deemed withdrawn after publication |