CN113399690A - Both-end turning clamp and turning method - Google Patents
Both-end turning clamp and turning method Download PDFInfo
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- CN113399690A CN113399690A CN202110632923.9A CN202110632923A CN113399690A CN 113399690 A CN113399690 A CN 113399690A CN 202110632923 A CN202110632923 A CN 202110632923A CN 113399690 A CN113399690 A CN 113399690A
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- clamping body
- workpiece
- turning
- clamping
- machined
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003754 machining Methods 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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
- B23B25/06—Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work
-
- 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
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/088—Work-clamping means other than mechanically-actuated using vacuum means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a two-end turning clamp and a turning method, wherein the two-end turning clamp comprises: the first clamping body is arranged in an open ring shape and is used for clamping the excircle part of the workpiece to be processed; the second clamping body is sleeved on the outer circle part of the first clamping body, the first clamping body and the second clamping body are fixedly connected through a fixing piece, two end parts of the second clamping body are provided with positioning end faces, and the two positioning end faces are provided with concave step structures; the end cover is used for being installed in the step structure in a sealing mode, the thickness of the end cover is smaller than the depth of the step, and therefore the outer side portion of the installed end cover does not exceed the positioning end face. The two-end turning clamp can realize positioning through the positioning end faces at the two ends, and in the turning process, a workpiece to be machined does not need to be taken out, and only the machining direction needs to be turned, so that the relative position precision of the two end face outlines is ensured.
Description
Technical Field
The invention relates to the technical field of machining clamps, in particular to a two-end turning clamp and a turning method.
Background
Referring to fig. 3, the workpiece 30 to be machined is a rotating body part, the profiles of both end faces are optical mirror surfaces, and the relative position accuracy of the profiles of both ends is very high. The profiles of the optical mirror surfaces at the two ends cannot be used as clamping surfaces for clamping and positioning during machining, and can only be clamped through the cylindrical part. If like ordinary solid of revolution parts machining, the centre gripping work piece cylinder position processes an end face earlier, takes off the part and turns around after the processing is accomplished, again centre gripping cylinder position processes another end face. This method can result in the relative position accuracy of the two end face profiles being not guaranteed due to the position error of the two clamping. Therefore, there is a need for a high precision two-end machining fixture for such applications.
Disclosure of Invention
In order to solve the technical problems in the background processing technology, the invention provides a two-end turning clamp and a turning method.
The technical scheme adopted by the invention is as follows: a two-end turning fixture, comprising:
the first clamping body is arranged in an open ring shape and is used for clamping the excircle part of the workpiece to be processed;
the second clamping body is sleeved on the outer circle part of the first clamping body, the first clamping body and the second clamping body are fixedly connected through a fixing piece, two end parts of the second clamping body are provided with positioning end faces, and the two positioning end faces are provided with concave step structures; and
and the end cover is used for being installed in the step structure, and the thickness of the end cover is smaller than the depth of the step, so that the outer end face of the installed end cover does not exceed the positioning end face.
The method has the following beneficial effects: the outer circle part of the workpiece to be machined is clamped by the first clamping body, the second clamping body is sleeved on the outer circle part of the first clamping body, and the workpiece to be machined, the first clamping body and the second clamping body are connected into a whole through the fixing piece. The end cover is fixedly installed in the step structure to seal the inner cavity of the first clamping body, and air leakage caused by a gap between the first clamping body and the workpiece to be processed is avoided. The two-end turning clamp can realize positioning through the positioning end faces at the two ends, and in the turning process, a workpiece to be machined does not need to be taken out, and only the machining direction needs to be turned, so that the relative position precision of the two end face outlines is ensured.
Further, the inner side portion of the first clamping body is provided with at least one groove along the axial direction.
Further, the number of the grooves is one, and the grooves are arranged to be directly opposite to the opening of the first clamping body.
Furthermore, two ends of the workpiece to be machined extend out of the clamping cavity of the first clamping body, so that the outer circle contour of the workpiece to be machined can be used as a centering contour.
Furthermore, the fixing piece is a screw, a threaded hole is formed in the second clamping body, and the head of the screw abuts against the outer circle portion of the first clamping body so as to apply clamping force.
Further, the end cover is fixedly installed through a countersunk screw.
A turning method using a two-end turning clamp comprises the following steps:
the workpiece to be processed is clamped by the first clamping body, the second clamping body is sleeved on the outer circle part of the first clamping body, and the workpiece to be processed, the first clamping body and the second clamping body are assembled into a whole by the fixing part;
selecting one end of the second clamping body to install an end cover, so that the workpiece to be processed, the first clamping body, the second clamping body and the end cover are assembled into a whole;
mounting one end of the assembly component, which is provided with the end cover, on a sucking disc of a main shaft of a processing machine tool through a corresponding positioning end face, and taking the surface of the sucking disc as a zero position of the assembly component in the Z direction;
taking the periphery of the exposed part of the workpiece to be machined as a centering profile of the workpiece to adjust the concentricity of the workpiece to be machined and a machine tool spindle and further adjust the zero position of the assembly component in the XY direction of the spindle sucker;
turning an optical mirror surface of the exposed end of the workpiece to be machined and turning a positioning end surface and an outer contour of the exposed second clamping body;
disassembling and assembling components and turning and installing: the end cover is disassembled, the end cover is fixedly arranged at the other end, the newly machined positioning end face is used as a reference surface for positioning and installation, the surface of the sucking disc is used as a zero point position of the assembly component in the Z direction, the outer contour machined by the second clamping body is used as a centering contour, the concentricity of the workpiece to be machined and the machine tool spindle is adjusted, and then the zero point position of the assembly component in the XY direction of the spindle sucking disc is adjusted;
and processing the optical mirror surface exposed at the other end of the workpiece to be processed.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a side view of a two-end machining fixture;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of a workpiece to be machined;
FIG. 4 is a schematic structural diagram of the first clamping body;
FIG. 5 is a schematic structural view of a second clamping body;
fig. 6 is a schematic structural view of the end cap.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 6, an embodiment of the present invention provides a two-end turning fixture, which mainly includes a first clamping body 10, a second clamping body 20, and an end cap 30. The first clamping body 10 is arranged in an open ring shape and is used for clamping the outer circle part of the workpiece 1 to be processed; the second clamping body 20 is sleeved on the outer circle part of the first clamping body 10, and the first clamping body 10 and the second clamping body 20 are fixedly connected through a fixing piece. In this embodiment, the fixing member is a screw, the second clamping body 20 is provided with a threaded hole 23, the screw is screwed in the threaded hole 23, and the head of the screw abuts against the outer circle portion of the first clamping body 10 to apply a clamping force, so that the inner side wall of the first clamping body 10 tightly wraps the outer circle portion of the workpiece 1 to be processed.
It is to be understood that the first clamping body 10 is arranged in the shape of an open ring, so that the first clamping body 10 has an opening 11, which facilitates the insertion of the workpiece 1 to be machined.
Preferably, the inner side of the first clamping body 10 is provided with at least one groove 12 in the axial direction. The arrangement of the groove 12 can make the material of the partial annular wall thinner, and during the process of clamping the workpiece 1 to be processed by the first clamping body 10, the groove 12 is deformed to better clamp the workpiece 1 to be processed.
In this embodiment, the number of the grooves 12 is one, and the grooves are arranged to be opposite to the openings 11 of the first clamping body 10, so that the deformation effect is good.
Meanwhile, two end parts of the second clamping body 20 are provided with positioning end surfaces 22, and the two positioning end surfaces 22 are provided with concave step structures 21; the end cover 30 is hermetically installed in the step structure 21, and the thickness of the end cover 30 is smaller than the depth of the step structure 21, so that the outer side of the installed end cover 30 does not exceed the positioning end face 22. The end cap 30 is arranged to be sealingly mounted with the step structure 21, and when the second clamping body 20 is sucked onto a suction cup of the machine tool spindle through the positioning end face 22, a sealed vacuum chamber is formed between the end cap 30 and the suction cup.
The excircle part of the workpiece 1 to be processed is clamped by the first clamping body 10, the second clamping body 20 is sleeved on the excircle part of the first clamping body 10, and the workpiece 1 to be processed, the first clamping body 10 and the second clamping body 20 are connected into a whole through a fixing piece. The end cap 30 is fixedly and hermetically installed in the step structure 21 to seal the inner cavity of the first clamping body 10, so as to prevent air leakage due to a gap between the first clamping body 10 and the workpiece 1 to be processed. The two-end turning clamp can realize positioning through the positioning end faces 22 at the two ends, and in the turning process, the workpiece 1 to be machined does not need to be taken out, and only the machining direction needs to be turned, so that the relative position precision of the two end face outlines of the workpiece to be machined is ensured.
Preferably, both ends of the workpiece 1 to be machined protrude out of the clamping cavity of the first clamping body 10, so that the peripheral contour of the workpiece 1 to be machined can be used as a centering contour.
To ensure that the end cap 30 does not interfere with the vacuum chuck, the end cap 30 is fixedly mounted by means of countersunk screws.
A turning method using a two-end turning clamp comprises the following steps:
the workpiece 1 to be processed is clamped by the first clamping body 10, the second clamping body 20 is sleeved on the outer circle part of the first clamping body 10, and the workpiece 1 to be processed, the first clamping body 10 and the second clamping body 20 are assembled into a whole by a fixing part;
selecting one end of the second clamping body 20 to install the end cover 30, so that the workpiece 1 to be processed, the first clamping body 10, the second clamping body 20 and the end cover 30 are assembled into a whole;
mounting one end of the assembly, which is provided with the end cover 30, on a sucking disc of a main shaft of a processing machine tool through a corresponding positioning end face 22, and taking the surface of the sucking disc as a zero point position of the assembly in the Z direction;
taking the outer circle of the exposed part of the workpiece 1 to be machined as a centering profile of the workpiece to adjust the concentricity of the workpiece 1 to be machined and a machine tool spindle, and further adjusting the zero position of the assembly component in the XY direction of the spindle sucker;
turning the optical mirror surface 2 of the exposed end of the workpiece 1 to be machined, and turning the exposed positioning end surface 22 and the excircle outline of the second clamping body 20;
disassembling and assembling components and turning and installing: disassembling the end cover 30, fixedly installing the end cover 30 at the other end, positioning and installing the newly machined positioning end face 22 as a reference plane, taking the surface of the sucker as a zero point position of the assembly component in the Z direction, taking the contour of the excircle machined by the second clamping body as a centering contour, adjusting the concentricity of the workpiece 1 to be machined and the machine tool spindle, and further adjusting the zero point position of the assembly component in the XY direction of the spindle sucker;
and processing the optical mirror surface 2 exposed at the other end of the workpiece 1 to be processed.
In the above-described turning method, since the positioning end surface 22 and the outer contour of the workpiece 1 to be machined, which are brought into contact with the suction cup after turning, are machined together with the optical mirror surface 2 to be machined, the positional relationship between the plane and the outer contour and the optical mirror surface 2 is known, accurate and assured. Because the other end surface of the workpiece 1 to be machined is machined with this plane as a zero point. The relative position precision of the two end profiles of the coaxiality of the outer profile adjusting assembly body and the main shaft can be guaranteed.
In this embodiment, the optical mirror surface 2 to be processed is a curved surface.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. Both ends car adds clamping apparatus, its characterized in that includes:
the first clamping body is arranged in an open ring shape and is used for clamping the excircle part of the workpiece to be processed;
the second clamping body is sleeved on the outer circle part of the first clamping body, the first clamping body and the second clamping body are fixedly connected through a fixing piece, two end parts of the second clamping body are provided with positioning end faces, and the two positioning end faces are provided with concave step structures; and
and the end cover is used for being installed in the step structure, and the thickness of the end cover is smaller than the depth of the step, so that the outer end face of the installed end cover does not exceed the positioning end face.
2. The two-end turning jig according to claim 1, characterized in that: the inner side part of the first clamping body is provided with at least one groove along the axial direction.
3. The two-end turning jig according to claim 2, characterized in that: the number of the grooves is one, and the grooves are arranged to be right opposite to the opening of the first clamping body.
4. The two-end turning jig according to claim 1, characterized in that: and two ends of the workpiece to be processed extend out of the clamping cavity of the first clamping body, so that the excircle contour of the workpiece to be processed can be used as a centering contour.
5. The two-end machining jig according to any one of claims 1 to 4, characterized in that: the fixing piece is a screw, a threaded hole is formed in the second clamping body, and the head of the screw abuts against the outer circle portion of the first clamping body so as to apply clamping force.
6. The two-end machining jig according to any one of claims 1 to 4, characterized in that: the end cover is fixedly installed through a countersunk screw.
7. A turning method using the both-end turning jig according to any one of claims 1 to 6, characterized by comprising the steps of:
the workpiece to be processed is clamped by the first clamping body, the second clamping body is sleeved on the outer circle part of the first clamping body, and the workpiece to be processed, the first clamping body and the second clamping body are assembled into a whole by the fixing part;
selecting one end of the second clamping body to install an end cover, so that the workpiece to be processed, the first clamping body, the second clamping body and the end cover are assembled into a whole;
mounting one end of the assembly component, which is provided with the end cover, on a sucking disc of a main shaft of a processing machine tool through a corresponding positioning end face, and taking the surface of the sucking disc as a zero position of the assembly component in the Z direction;
taking the outer circle of the exposed part of the workpiece to be machined as a centering profile of the workpiece to adjust the concentricity of the workpiece to be machined and a machine tool spindle and further adjust the zero position of the assembly component in the XY direction of the spindle sucker;
turning an optical mirror surface of the exposed end of the workpiece to be machined and turning a positioning end surface and an excircle outline of a second clamping body at the same end;
disassembling and assembling components and turning and installing: the end cover is disassembled and fixedly installed at the other end, the newly machined positioning end face is used as a reference surface for positioning and installation, the surface of the sucking disc is used as a zero point position of the assembly component in the Z direction, the contour of the excircle machined by the second clamping body is used as a centering contour, the concentricity of the workpiece to be machined and the machine tool spindle is adjusted, and then the zero point position of the assembly component in the XY direction of the spindle sucking disc is adjusted;
and processing the optical mirror surface exposed at the other end of the workpiece to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632923.9A CN113399690B (en) | 2021-06-07 | 2021-06-07 | Turning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632923.9A CN113399690B (en) | 2021-06-07 | 2021-06-07 | Turning method |
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| Publication Number | Publication Date |
|---|---|
| CN113399690A true CN113399690A (en) | 2021-09-17 |
| CN113399690B CN113399690B (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110632923.9A Active CN113399690B (en) | 2021-06-07 | 2021-06-07 | Turning method |
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| Country | Link |
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| CN (1) | CN113399690B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178557A (en) * | 2021-12-29 | 2022-03-15 | 湖北三江航天红阳机电有限公司 | Cylindrical skin processing method |
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| US5464231A (en) * | 1994-06-20 | 1995-11-07 | Clay; Tymen | Chuck with jaws having curved engagement surfaces |
| TW200734118A (en) * | 2006-03-10 | 2007-09-16 | Hon Hai Prec Ind Co Ltd | Clamping apparatus and clamping method using the apparatus |
| CN205096550U (en) * | 2015-10-09 | 2016-03-23 | 江苏兄弟活塞有限公司 | Rough turn processing frock of ring carrier formula piston excircle |
| CN206326411U (en) * | 2016-12-01 | 2017-07-14 | 上海无线电设备研究所 | A kind of hydraulic type positioning clamping device |
| CN207681952U (en) * | 2017-12-31 | 2018-08-03 | 佛山市汇伟智科技有限公司 | A kind of vertical pivot outsourcing fixture of finishing machine |
| CN110405227A (en) * | 2019-08-08 | 2019-11-05 | 哈尔滨工业大学 | A kind of fixed point rotary cutting process for the processing of off-axis lenticule |
| CN112388362A (en) * | 2020-10-16 | 2021-02-23 | 贵州特冶科技有限公司 | Fixture combination for machining rotary pipe joint with ball by numerical control lathe and machining method |
-
2021
- 2021-06-07 CN CN202110632923.9A patent/CN113399690B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5464231A (en) * | 1994-06-20 | 1995-11-07 | Clay; Tymen | Chuck with jaws having curved engagement surfaces |
| TW200734118A (en) * | 2006-03-10 | 2007-09-16 | Hon Hai Prec Ind Co Ltd | Clamping apparatus and clamping method using the apparatus |
| CN205096550U (en) * | 2015-10-09 | 2016-03-23 | 江苏兄弟活塞有限公司 | Rough turn processing frock of ring carrier formula piston excircle |
| CN206326411U (en) * | 2016-12-01 | 2017-07-14 | 上海无线电设备研究所 | A kind of hydraulic type positioning clamping device |
| CN207681952U (en) * | 2017-12-31 | 2018-08-03 | 佛山市汇伟智科技有限公司 | A kind of vertical pivot outsourcing fixture of finishing machine |
| CN110405227A (en) * | 2019-08-08 | 2019-11-05 | 哈尔滨工业大学 | A kind of fixed point rotary cutting process for the processing of off-axis lenticule |
| CN112388362A (en) * | 2020-10-16 | 2021-02-23 | 贵州特冶科技有限公司 | Fixture combination for machining rotary pipe joint with ball by numerical control lathe and machining method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178557A (en) * | 2021-12-29 | 2022-03-15 | 湖北三江航天红阳机电有限公司 | Cylindrical skin processing method |
| CN114178557B (en) * | 2021-12-29 | 2023-08-15 | 湖北三江航天红阳机电有限公司 | Cylindrical skin processing method |
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| CN113399690B (en) | 2022-11-15 |
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Effective date of registration: 20231017 Address after: 515599 Middle Section of No.5 Road, Jiedong Economic Development Zone, Jieyang City, Guangdong Province Patentee after: Greatoo Intelligent Equipment Inc. Address before: No.3, Dangui Road, Wuguishan District, Zhongshan City, Guangdong Province 528458 Patentee before: THE OPEN University OF GUANGDONG (GUANGDONG POLYTECHNIC INSTITUTE) |
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