CN109158629B - Positioning tool for thin-wall cylindrical part - Google Patents
Positioning tool for thin-wall cylindrical part Download PDFInfo
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- CN109158629B CN109158629B CN201811383515.9A CN201811383515A CN109158629B CN 109158629 B CN109158629 B CN 109158629B CN 201811383515 A CN201811383515 A CN 201811383515A CN 109158629 B CN109158629 B CN 109158629B
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- expansion
- sleeve
- cylindrical
- piece
- locking ring
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- 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)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to a positioning tool for a thin-wall cylindrical part, and belongs to the field of machining. The positioning tool comprises an expansion outer sleeve, an expansion inner sleeve, a locking ring, an expansion body and an elastic ring; the expansion outer sleeve is of a split cylindrical structure; the inner expanding sleeve is a cylindrical structure with a conical inner cavity; the inner hole of the locking ring is a threaded hole; the front section of the expansion body is a cylindrical section, the rear section of the expansion body is a conical section, and the rear end of the cylindrical section is provided with an external thread; the expansion outer sleeve is folded into a cylindrical assembly by adhering an elastic ring on the inner wall, and the locking ring and the expansion inner sleeve are sequentially placed into the inner cavity of the expansion outer sleeve; the front end of the expansion body penetrates through the expansion inner sleeve and the locking ring and is in threaded connection with an inner hole of the expansion inner sleeve through external threads on the outer wall of the rear end of the cylindrical section of the expansion body. The positioning tool disclosed by the invention has the advantages of simple structure, convenience in machining and simplicity in operation, can be used for quickly and reliably clamping a thin-wall cylindrical part, is small in clamping deformation, ensures the machining precision of a product and improves the machining efficiency.
Description
Technical Field
The invention relates to a positioning tool for a thin-wall cylindrical part, and belongs to the field of machining.
Background
The rigidity of the thin-wall cylindrical part is poor, the part is easy to generate elastic deformation during processing and clamping, and the processing precision of the part is seriously influenced. The method adopted at present mainly comprises the steps of reducing the tool consumption, increasing the times of semi-finishing and finally finishing to meet the size requirement, the method is long in time consumption, and when the machining allowance is less, the thinner the part is, the greater the machining difficulty is, the deformation is easy to generate, and the size of the part is out of tolerance.
Disclosure of Invention
The invention aims to solve the problems of rigidity, easiness in deformation and difficulty in processing of thin-wall cylindrical parts, and provides a positioning tool for thin-wall cylindrical parts.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a positioning tool for a thin-wall cylindrical part, which comprises an expansion outer sleeve, an expansion inner sleeve, a locking ring, an expansion body and an elastic ring, wherein the expansion outer sleeve is fixedly connected with the expansion inner sleeve;
the expansion sleeve is a sub-piece structure formed by axially equally cutting a cylindrical composite piece, the outer diameter of the cylindrical composite piece of the expansion sleeve is matched with the inner diameter of the cylindrical piece to be clamped, and an annular limiting table radially extends inwards from the front port of the cylindrical composite piece of the expansion sleeve;
the expansion inner sleeve is a sub-piece structure formed by axially equally cutting a cylindrical composite piece, the outer diameter of the expansion inner sleeve cylindrical composite piece is matched with the inner diameter of the expansion outer sleeve cylindrical composite piece, and the inner cavity of the expansion inner sleeve cylindrical composite piece is a backward expansion conical surface;
the locking ring is an annular piece with the outer diameter matched with the inner diameter of the expansion sleeve cylindrical assembly, the inner hole of the locking ring is a threaded hole, and the outer wall of the locking ring is provided with an annular limiting groove;
the front section of the expansion body is a cylindrical section, the rear section of the expansion body is a conical section expanding backwards, and the taper of the conical section of the expansion body is matched with the taper of the conical surface of the inner cavity of the cylindrical assembly of the expansion inner sleeve; the outer wall of the rear end of the cylindrical section of the expansion body is provided with an external thread matched with the internal thread hole of the locking ring;
each sub-piece of the expansion sleeve forms a cylindrical combined piece by adhering elastic rings on the inner wall, the cylindrical combined piece of the expansion sleeve is sleeved outside the locking ring, and an annular limiting table at the front end opening part of the cylindrical combined piece of the expansion sleeve is inserted into an annular limiting groove on the outer wall of the locking ring so as to axially limit the two sub-pieces; each sub-piece of the expansion inner sleeve is placed at the rear end of the locking ring of the inner cavity of the expansion outer sleeve; the front end of the expansion body penetrates through the expansion inner sleeve and the locking ring and is in threaded connection with an inner hole of the locking ring through external threads on the outer wall of the rear end of the cylindrical section of the expansion body.
When the clamping tool is used, one end of the conical section of the expansion body of the clamping tool is inwards inserted into the inner wall of the cylindrical part to be clamped, the locking ring is held, and the expansion body is rotated, so that the expansion body axially and outwards moves relative to the locking ring. Along with the moving of the expansion body, the outer conical surface of the conical section at the rear section of the expansion body extrudes each sub-piece of the expansion inner sleeve to radially outwardly expand, so that each sub-piece of the expansion outer sleeve is outwardly expanded to clamp the cylindrical piece.
Has the advantages that:
the positioning tool disclosed by the invention has the advantages of simple structure, convenience in machining and simplicity in operation, can be used for quickly and reliably clamping a thin-wall cylindrical part, is small in clamping deformation, ensures the machining precision of a product and improves the machining efficiency.
Drawings
FIG. 1 is a schematic view of a positioning tool of the present invention in a semi-throw configuration;
in the drawings, 1-expansion of the outer sleeve; 2, expanding the inner sleeve; 3-locking ring; 4-expansion body; 5-elastic ring.
Detailed Description
The invention is further described with reference to the following figures and examples.
Examples
The invention discloses a positioning tool for a thin-wall cylindrical part, which comprises an expansion outer sleeve 1, an expansion inner sleeve 2, a locking ring 3, an expansion body 4 and an elastic ring 5, wherein the expansion outer sleeve is arranged on the outer surface of the thin-wall cylindrical part;
the expansion outer sleeve 1 is a sub-piece structure formed by axially and equally cutting a cylindrical composite piece, the outer diameter of the cylindrical composite piece of the expansion outer sleeve 1 is matched with the inner diameter of the cylindrical piece to be clamped, and an annular limiting table radially and inwardly extends from the front port part of the cylindrical composite piece of the expansion outer sleeve 1;
the inner expanding sleeve 2 is a sub-piece structure formed by axially equally cutting a cylindrical composite piece, the outer diameter of the cylindrical composite piece of the inner expanding sleeve 2 is matched with the inner diameter of the cylindrical composite piece of the outer expanding sleeve 1, and the inner cavity of the cylindrical composite piece of the inner expanding sleeve 2 is a backward expanding conical surface;
the locking ring 3 is an annular piece with the outer diameter matched with the inner diameter of the cylindrical assembly of the expansion sleeve 1, the inner hole of the locking ring 3 is a threaded hole, and the outer wall of the locking ring 3 is provided with an annular limiting groove;
the front section of the expansion body 4 is a cylindrical section, the rear section of the expansion body 4 is a conical section which expands backwards, and the taper of the conical section of the expansion body 4 is matched with the taper of the conical surface of the inner cavity of the cylindrical assembly of the expansion inner sleeve 2; the outer wall of the rear end of the cylindrical section of the expansion body 4 is provided with an external thread matched with the internal thread hole of the locking ring 3;
each sub-piece of the expansion sleeve 1 forms a cylindrical combined piece on the elastic ring 5 on the inner wall, the cylindrical combined piece of the expansion sleeve 1 is sleeved outside the locking ring 3, and the annular limiting table at the front port part of the cylindrical combined piece of the expansion sleeve 1 is inserted into the annular limiting groove on the outer wall of the locking ring 3, so that the expansion sleeve and the cylindrical combined piece are axially limited; each sub-piece of the expansion inner sleeve 2 is placed at the rear end of a locking ring 3 in the inner cavity of the expansion outer sleeve 1; the front end of the expansion body 4 penetrates through the expansion inner sleeve 2 and the locking ring 3 and is in threaded connection with the inner hole of the locking ring 3 through the external thread on the outer wall of the cylindrical section of the expansion body 4.
When the clamping tool is used, one end of the conical section of the expansion body 4 of the clamping tool is inwards inserted into the inner wall of the cylindrical part to be clamped, the locking ring 3 is held, and the expansion body 4 is rotated, so that the expansion body 4 axially outwards moves relative to the locking ring 3. Along with the shifting of the expansion body 4, the outer conical surface of the conical section at the rear section of the expansion body 4 extrudes each sub-piece of the expansion inner sleeve 2 to expand radially outwards, so that each sub-piece of the expansion outer sleeve 1 expands outwards, and the cylindrical piece is clamped.
Claims (1)
1. The utility model provides a location frock for thin wall cylinder, characterized by: comprises an expansion outer sleeve, an expansion inner sleeve, a locking ring, an expansion body and an elastic ring;
the expansion sleeve is a sub-piece structure formed by axially equally cutting a cylindrical composite piece, the outer diameter of the cylindrical composite piece of the expansion sleeve is matched with the inner diameter of the cylindrical piece to be clamped, and an annular limiting table radially extends inwards from the front port of the cylindrical composite piece of the expansion sleeve;
the expansion inner sleeve is a sub-piece structure formed by axially equally cutting a cylindrical composite piece, the outer diameter of the expansion inner sleeve cylindrical composite piece is matched with the inner diameter of the expansion outer sleeve cylindrical composite piece, and the inner cavity of the expansion inner sleeve cylindrical composite piece is a backward expansion conical surface;
the locking ring is an annular piece with the outer diameter matched with the inner diameter of the expansion sleeve cylindrical assembly, the inner hole of the locking ring is a threaded hole, and the outer wall of the locking ring is provided with an annular limiting groove;
the front section of the expansion body is a cylindrical section, the rear section of the expansion body is a conical section expanding backwards, and the taper of the conical section of the expansion body is matched with the taper of the conical surface of the inner cavity of the cylindrical assembly of the expansion inner sleeve; the outer wall of the rear end of the cylindrical section of the expansion body is provided with an external thread matched with the internal thread hole of the locking ring;
each sub-piece of the expansion sleeve forms a cylindrical combined piece by adhering elastic rings on the inner wall, the cylindrical combined piece of the expansion sleeve is sleeved outside the locking ring, and an annular limiting table at the front end opening part of the cylindrical combined piece of the expansion sleeve is inserted into an annular limiting groove on the outer wall of the locking ring so as to axially limit the two sub-pieces; each sub-piece of the expansion inner sleeve is placed at the rear end of the locking ring of the inner cavity of the expansion outer sleeve; the front end of the expansion body penetrates through the expansion inner sleeve and the locking ring and is in threaded connection with an inner hole of the locking ring through external threads on the outer wall of the rear end of the cylindrical section of the expansion body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383515.9A CN109158629B (en) | 2018-11-20 | 2018-11-20 | Positioning tool for thin-wall cylindrical part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383515.9A CN109158629B (en) | 2018-11-20 | 2018-11-20 | Positioning tool for thin-wall cylindrical part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109158629A CN109158629A (en) | 2019-01-08 |
| CN109158629B true CN109158629B (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811383515.9A Active CN109158629B (en) | 2018-11-20 | 2018-11-20 | Positioning tool for thin-wall cylindrical part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109158629B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899745A (en) * | 2019-12-27 | 2020-03-24 | 西安航天动力机械有限公司 | Internal support tool for machining and trimming cylindrical part |
| CN114714122B (en) * | 2022-03-07 | 2023-12-22 | 苏机智能制造(江苏)有限公司 | Inner expansion type tool for numerical control machining center |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0847832A (en) * | 1994-08-02 | 1996-02-20 | Honda Motor Co Ltd | Bearing clamp device of turning jig |
| JP2005118948A (en) * | 2003-10-17 | 2005-05-12 | Seiwa Seiki Kk | Lining chuck |
| RU2291760C2 (en) * | 2005-04-11 | 2007-01-20 | Открытое акционерное общество "Станкотехника" | Thin-wall parts working mandrel |
| CN201529781U (en) * | 2009-09-18 | 2010-07-21 | 沈阳黎明航空发动机(集团)有限责任公司 | Disc-shaped bulging mechanism for processing thin-wall tubular spare parts |
| CN102407354A (en) * | 2011-10-15 | 2012-04-11 | 山东方达机械有限公司 | Hydraulic clamp for inner hole of high-precision thin-wall pipe fitting |
| CN202271248U (en) * | 2011-09-28 | 2012-06-13 | 苏州市巨力万向节有限公司 | Surface grinding machine clamp |
| CN105414681A (en) * | 2015-12-05 | 2016-03-23 | 綦江县赛普雷多汽车齿轮厂 | Tool capable of positioning gear |
-
2018
- 2018-11-20 CN CN201811383515.9A patent/CN109158629B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0847832A (en) * | 1994-08-02 | 1996-02-20 | Honda Motor Co Ltd | Bearing clamp device of turning jig |
| JP2005118948A (en) * | 2003-10-17 | 2005-05-12 | Seiwa Seiki Kk | Lining chuck |
| RU2291760C2 (en) * | 2005-04-11 | 2007-01-20 | Открытое акционерное общество "Станкотехника" | Thin-wall parts working mandrel |
| CN201529781U (en) * | 2009-09-18 | 2010-07-21 | 沈阳黎明航空发动机(集团)有限责任公司 | Disc-shaped bulging mechanism for processing thin-wall tubular spare parts |
| CN202271248U (en) * | 2011-09-28 | 2012-06-13 | 苏州市巨力万向节有限公司 | Surface grinding machine clamp |
| CN102407354A (en) * | 2011-10-15 | 2012-04-11 | 山东方达机械有限公司 | Hydraulic clamp for inner hole of high-precision thin-wall pipe fitting |
| CN105414681A (en) * | 2015-12-05 | 2016-03-23 | 綦江县赛普雷多汽车齿轮厂 | Tool capable of positioning gear |
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| Publication number | Publication date |
|---|---|
| CN109158629A (en) | 2019-01-08 |
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