CN103949917B - A kind of annular workpieces fixture - Google Patents
A kind of annular workpieces fixture Download PDFInfo
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- CN103949917B CN103949917B CN201410199277.1A CN201410199277A CN103949917B CN 103949917 B CN103949917 B CN 103949917B CN 201410199277 A CN201410199277 A CN 201410199277A CN 103949917 B CN103949917 B CN 103949917B
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- Prior art keywords
- ring
- steel ball
- fairlead
- annular workpieces
- workpiece
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Classifications
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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
- 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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
-
- 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)
- Jigs For Machine Tools (AREA)
Abstract
A kind of annular workpieces fixture, be divided into inside and outside fixture two parts, wherein inside and outside fixture forms by retainer ring, hold-down ring and connecting ring.Workpiece when the present invention is used for annular workpieces single-piece or more than one piece stacked combination turnery processing inside and outside disc is fixed, and can provide adjustable axial static pressure, use inner fixing device when processing work periphery, use external fixer during processing inner headed face to workpiece.The present invention regulates each first screw compressed on point in use in certain sequence by torque spanner, screwing force is delivered on steel ball by lead, and due to the guiding of fairlead and the point cantact of steel ball, screwing force changes axial normal pressure into, steel ball realizes the fixing clamping to workpiece by pad workpiece pressing, final workpiece is only by axial force, radial load and tangential force are zero, make workpiece deformation minimum, the uniformity of the cylindricity of work pieces process, axiality and Combined machining workpiece can be ensured.
Description
Technical field
The present invention relates to a kind of annular workpieces fixture, for the fixing clamping to workpiece when annular workpieces single-piece or the inside and outside disc of more than one piece stacked combination turnery processing, Light deformation clamping can be realized, ensure size and the accuracy of form and position of inside and outside disc turnery processing.
Background technology
Common workpiece is when machining, the mode of general use pressing plate clamping is fixed, but for the inside and outside disc of annular workpieces turnery processing, according to the mode of end surface press plate clamping, then except the thrust of axis, radial direction or tangential component must be brought, cause the distortion of the especially low rigidity annular workpieces of annular workpieces, affect machining accuracy; According to the mode of inner circle or outer dome clamping, then pressure is wayward, easily causes that clamping power is not enough or dress is afterburning excessive causes workpiece deformation, and the method cannot be used for the processing of more than one piece stacked combination.Therefore, existing clamping method, for the especially low rigidity annular workpieces of lopps, can cause workpiece stress deformation, machining accuracy is affected.
Summary of the invention
The technical problem that the present invention solves is: overcome the problem on deformation that prior art center platen clamping annular workpieces brings, a kind of annular workpieces fixture is provided, this device applies adjustable shaft to static pressure to workpiece, make annular workpieces clamping deformation minimum, and meet the fixture of inside and outside disc turning needs.
Technical scheme of the present invention is: a kind of annular workpieces fixture, comprises inner fixing device and external fixer, and described inner fixing device comprises internal fixtion ring, interior hold-down ring and interior connecting ring; Described internal fixtion ring is cirque structure, and on internal fixtion ring, axial circumference uniform distribution has for the screw via hole fixing with outside lathe table top; Described interior hold-down ring is cirque structure, the outer ring surface of interior hold-down ring is evenly distributed in the compression point for fixing annular workpieces; Described internal fixtion ring is fixedly connected with by interior connecting ring with interior hold-down ring, and on interior connecting ring, circumference uniform distribution has radial direction through hole; Described internal fixtion ring is equal with the external diameter of interior connecting ring, and the external diameter of described interior hold-down ring is all greater than internal fixtion ring and interior connecting ring;
Described external fixer comprises extenal fixation ring, external compression ring and outer connecting ring; Described extenal fixation ring is cirque structure, and on extenal fixation ring, axial circumference uniform distribution has for the screw via hole fixing with outside lathe table top; Described external compression ring is cirque structure, the inner ring surface of external compression ring is evenly distributed in the compression point for fixing annular workpieces; Described extenal fixation ring is fixedly connected with by outer connecting ring with external compression ring, and on outer connecting ring, circumference uniform distribution has radial direction through hole; Described extenal fixation ring is equal with the internal diameter of outer connecting ring, and the internal diameter of described external compression ring is all less than extenal fixation ring and outer connecting ring.
Described compression point comprises lead, fairlead, steel ball, pad, the first screw; First screw is arranged on and compresses in an axial threaded hole at place, and fairlead is arranged on the axial counterbore be positioned at below above-mentioned screwed hole, fairlead and described counterbore interference fit; Lead and steel ball are installed in fairlead, lead and fairlead matched in clearance, and steel ball and fairlead interference fits, moved vertically by fairlead restricted guidance post and steel ball; The upper surface of lead and the first screws contact, the lower surface of lead and the upper-end contact of steel ball, the lower end of steel ball contacts with the upper surface of pad, and the lower surface of pad contacts with annular workpieces.
The hardness of described lead, fairlead, steel ball and pad is HRC36 ~ 66.
The present invention's advantage is compared with prior art: the axial static pressure of the present invention by providing multiple spot adjustable to annular workpieces, make workpiece when fixing not by radial load and tangential force, therefore the clamping deformation of workpiece is minimum, effectively can ensure dimensional accuracy, the cylindricity of the inside and outside disc turnery processing of workpiece; The present invention is by regulating each screw-down torque compressing point the first screw, and adjustable respectively compresses thrust a little, makes the distortion of workpiece controlled; Inside and outside fixture of the present invention can act on workpiece simultaneously, and when making inside and outside round processing and loading clamp conversion, work status remains unchanged, and effectively can ensure the axiality of the inside and outside disc processing of workpiece; The present invention is fixed by the axial static pressure applying multiple spot adjustable to workpiece, during inside and outside round processing and loading clamp conversion, work status is constant simultaneously, therefore splendid to the clamping deformation control effects of low rigidity, the processing of major diameter annular workpieces and the processing of annular workpieces more than one piece stacked combination, and the uniformity of more than one piece Combined machining can be ensured.
Accompanying drawing explanation
Fig. 1 is annular workpieces inner fixing device schematic three dimensional views of the present invention;
Fig. 2 is annular workpieces inner fixing device structure chart of the present invention;
Fig. 3 is annular workpieces external fixer schematic three dimensional views of the present invention;
Fig. 4 is annular workpieces external fixer structure chart of the present invention;
Fig. 5-Fig. 7 is apparatus of the present invention method of work schematic flow sheet.
Detailed description of the invention
A kind of annular workpieces fixture of the present invention, comprise inner fixing device I and external fixer II, described inner fixing device I structure as shown in Figure 1, 2, comprises internal fixtion ring 11, interior hold-down ring 12 and interior connecting ring 13; Described internal fixtion ring 11 is cirque structure, and on internal fixtion ring 11, axial circumference uniform distribution has for the screw via hole fixing with outside lathe table top 22; Described interior hold-down ring 12 is cirque structure, the outer ring surface of interior hold-down ring 12 is evenly distributed in the compression point 10 for fixing annular workpieces III; Described internal fixtion ring 11 is fixedly connected with by interior connecting ring 13 with interior hold-down ring 12, and on interior connecting ring 13, circumference uniform distribution has radial direction through hole; Described internal fixtion ring 11 is equal with the external diameter of interior connecting ring 13, and the external diameter of described interior hold-down ring 12 is all greater than internal fixtion ring 11 and interior connecting ring 13.
Described external fixer II structure as shown in Figure 3,4, comprises extenal fixation ring 14, external compression ring 15 and outer connecting ring 16; Described extenal fixation ring 14 is cirque structure, and on extenal fixation ring 14, axial circumference uniform distribution has for the screw via hole fixing with outside lathe table top 22; Described external compression ring 15 is cirque structure, the inner ring surface of external compression ring 15 is evenly distributed in the compression point 10 for fixing annular workpieces III; Described extenal fixation ring 14 is fixedly connected with by outer connecting ring 16 with external compression ring 15, and on outer connecting ring 16, circumference uniform distribution has radial direction through hole; Described extenal fixation ring 14 is equal with the internal diameter of outer connecting ring 16, and the internal diameter of described external compression ring 15 is all less than extenal fixation ring 14 and outer connecting ring 16.
As shown in Figure 2,4, described compression point 10 comprises lead 2, fairlead 3, steel ball 4, pad 5, first screw 6 form.First screw 6 is arranged in the axial threaded hole at compression point 10 centers, and fairlead 3 is arranged in the coaxial counterbore below screwed hole, fairlead 3 and described counterbore interference fit; Lead 2 and fairlead 3 matched in clearance, steel ball 4 and fairlead 3 interference fits, moved vertically by fairlead 3 restricted guidance post 2 and steel ball 4; The upper surface of lead 2 contacts with the first screw 6, the lower surface of lead 2 and the upper-end contact of steel ball 4, and the lower end of steel ball 4 contacts with the upper surface of pad 5, and the lower surface of pad 5 contacts with annular workpieces III.When tightening the first screw 6, the first screw 6 promotes lead 2 and moves downward, and lead 2 promotes steel ball 4, and steel ball 4 compresses annular workpieces III by pad 5.Fairlead 3 restricted guidance post 2 and steel ball 4 can only move along the direction being parallel to annular workpieces III axis, and be delivered on steel ball 4 to the screwing force of the first screw 5 by lead 2, steel ball 4 produces axial compressive force; First screw 6 can drive lead 2 to rotate when tightening, but steel ball 4 is point cantact with lead 2 and pad 5, can not rotates and produce horizontal component with lead 2, steel ball 4 compresses annular workpieces III by pad 5, final annular workpieces III only by axial force, and is not subject to radial load and tangential force.The screw-down torque that each thrust compressing point 10 passes through adjustment first screw 6 is adjustable.Described lead 2, fairlead 3, steel ball 4 are HRC36 ~ 66 with the hardness of pad 5.
With reference to the accompanying drawings, the concrete work of apparatus of the present invention is described below:
Step one: as shown in Fig. 2,5, is first placed on annular workpieces III on lathe table top 22, and the centering center of circle; Then the second screw 21 is adopted to be fixed on lathe table top 22 by inner fixing device I; Pad 5 is put into corresponding each position compressing point 10, annular workpieces III upper surface;
Step 2: utilize torque spanner to tighten each first screw 6 substep reinforcing, complete fixing annular workpieces III; For guaranteeing that the distortion that annular workpieces III occurs in rundown process meets distortion threshold value, at annular workpieces III periphery frame dial gauge or amesdial IV, monitoring annular workpieces III deformation in real time; Complete annular workpieces III fixing after, remove dial gauge or amesdial IV, carry out periphery turnery processing;
Step 3: as shown in Fig. 2,4,6, is placed on the position that the corresponding external fixer II in annular workpieces III upper surface compresses point 10 by pad 5; Then the second screw 21 is adopted to be fixed on lathe table top 22 by external fixer II;
Step 4: utilize torque spanner to tighten each first screw 6 substep reinforcing, complete fixing annular workpieces III; For guaranteeing that the distortion that annular workpieces III occurs in rundown process meets distortion threshold value, by the side through hole on outer connecting ring 16 at annular workpieces III periphery frame dial gauge or amesdial IV, monitoring annular workpieces III deformation in real time;
Step 5: as shown in Fig. 2,4,7, complete annular workpieces III fixing after, remove dial gauge or amesdial IV, unclamp the first screw 6 on inner fixing device I, remove the second screw 21 on inner fixing device I, remove inner fixing device I, carry out inner headed face turnery processing, finally complete the processing to annular workpieces III.
The content be not described in detail in description of the present invention belongs to the known technology of those skilled in the art.
Claims (2)
1. an annular workpieces fixture, comprise inner fixing device (I) and external fixer (II), it is characterized in that: described inner fixing device (I) comprises internal fixtion ring (11), interior hold-down ring (12) and interior connecting ring (13); Described internal fixtion ring (11) is cirque structure, has for the screw via hole fixing with outside lathe table top (22) at the upper axial circumference uniform distribution of internal fixtion ring (11); Described interior hold-down ring (12) is cirque structure, the outer ring surface of interior hold-down ring (12) is evenly distributed in the compression point (10) for fixing annular workpieces (III); Described internal fixtion ring (11) is fixedly connected with by interior connecting ring (13) with interior hold-down ring (12), and the upper circumference uniform distribution of interior connecting ring (13) has radial direction through hole; Described internal fixtion ring (11) is equal with the external diameter of interior connecting ring (13), and the external diameter of described interior hold-down ring (12) is all greater than internal fixtion ring (11) and interior connecting ring (13);
Described external fixer (II) comprises extenal fixation ring (14), external compression ring (15) and outer connecting ring (16); Described extenal fixation ring (14) is cirque structure, and the upper axial circumference uniform distribution of extenal fixation ring (14) has for the screw via hole fixing with outside lathe table top (22); Described external compression ring (15) is cirque structure, the inner ring surface of external compression ring (15) is evenly distributed in the compression point (10) for fixing annular workpieces (III); Described extenal fixation ring (14) is fixedly connected with by outer connecting ring (16) with external compression ring (15), and the upper circumference uniform distribution of outer connecting ring (16) has radial direction through hole; Described extenal fixation ring (14) is equal with the internal diameter of outer connecting ring (16), and the internal diameter of described external compression ring (15) is all less than extenal fixation ring (14) and outer connecting ring (16);
Described compression point (10) comprises lead (2), fairlead (3), steel ball (4), pad (5), the first screw (6); First screw (6) is arranged in the axial threaded hole at compression point (10) place, and fairlead (3) is arranged on the axial counterbore be positioned at below above-mentioned screwed hole, fairlead (3) and described counterbore interference fit; Lead (2) and steel ball (4) are installed in fairlead (3), lead (2) and fairlead (3) matched in clearance, steel ball (4) and fairlead (3) interference fits, moved vertically by fairlead (3) restricted guidance post (2) and steel ball (4); The upper surface of lead (2) contacts with the first screw (6), the lower surface of lead (2) and the upper-end contact of steel ball (4), the lower end of steel ball (4) contacts with the upper surface of pad (5), and the lower surface of pad (5) contacts with annular workpieces (III).
2. a kind of annular workpieces fixture according to claim 1, is characterized in that: described lead (2), fairlead (3), steel ball (4) are HRC36 ~ 66 with the hardness of pad (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199277.1A CN103949917B (en) | 2014-05-12 | 2014-05-12 | A kind of annular workpieces fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199277.1A CN103949917B (en) | 2014-05-12 | 2014-05-12 | A kind of annular workpieces fixture |
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| Publication Number | Publication Date |
|---|---|
| CN103949917A CN103949917A (en) | 2014-07-30 |
| CN103949917B true CN103949917B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410199277.1A Active CN103949917B (en) | 2014-05-12 | 2014-05-12 | A kind of annular workpieces fixture |
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| CN (1) | CN103949917B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425568A (en) * | 2016-10-25 | 2017-02-22 | 江苏北方湖光光电有限公司 | Clamping method and device for balancing locking force from bottom to top |
| CN106425579A (en) * | 2016-11-16 | 2017-02-22 | 四川省自贡市海川实业有限公司 | Closed integral blade disc machining clamping system |
| CN110370034A (en) * | 2019-07-12 | 2019-10-25 | 中国电子科技集团公司第三十八研究所 | A kind of fixture of the slim annular workpieces of turning |
| CN112604604B (en) * | 2021-01-22 | 2022-01-07 | 河南黄河田中科美压力设备有限公司 | Steel ring and big cushion block connecting device of cubic apparatus diamond synthetic press |
| CN113523854B (en) * | 2021-07-30 | 2022-09-27 | 西北机器有限公司 | Machining tool and machining method for thin-wall rotating curved surface part |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19860013C2 (en) * | 1998-12-23 | 2000-11-02 | Gemeinschaftskernkraftwerk Gro | Device for clamping a sealing ring on a machine tool |
| CN201124305Y (en) * | 2007-12-21 | 2008-10-01 | 哈尔滨汽轮机厂有限责任公司 | Clamping bulkhead for rotation of steam turbine shaft type thin wall parts |
| CN201645194U (en) * | 2010-04-22 | 2010-11-24 | 四川柳河齿轮有限公司 | Clamping device for processing of excircle thin wall part |
| CN202479842U (en) * | 2012-03-08 | 2012-10-10 | 上海汇大机械制造有限公司 | Pressing device |
| CN103302019A (en) * | 2013-06-05 | 2013-09-18 | 中国矿业大学 | Filling mining solid material screening device |
-
2014
- 2014-05-12 CN CN201410199277.1A patent/CN103949917B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19860013C2 (en) * | 1998-12-23 | 2000-11-02 | Gemeinschaftskernkraftwerk Gro | Device for clamping a sealing ring on a machine tool |
| CN201124305Y (en) * | 2007-12-21 | 2008-10-01 | 哈尔滨汽轮机厂有限责任公司 | Clamping bulkhead for rotation of steam turbine shaft type thin wall parts |
| CN201645194U (en) * | 2010-04-22 | 2010-11-24 | 四川柳河齿轮有限公司 | Clamping device for processing of excircle thin wall part |
| CN202479842U (en) * | 2012-03-08 | 2012-10-10 | 上海汇大机械制造有限公司 | Pressing device |
| CN103302019A (en) * | 2013-06-05 | 2013-09-18 | 中国矿业大学 | Filling mining solid material screening device |
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| CN103949917A (en) | 2014-07-30 |
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Effective date of registration: 20200630 Address after: 102600 No.7 Haixin Road, Huangcun Town, Daxing District, Beijing Co-patentee after: BEIJING Research Institute OF SPATIAL MECHANICAL & ELECTRICAL TECHNOLOGY Patentee after: BEIJING AEROSPACE HEZHONG TECHNOLOGY DEV Co.,Ltd. Address before: 9201 box 5, box 1, South Dahongmen Road, 100076, Beijing, Fengtai District Patentee before: BEIJING Research Institute OF SPATIAL MECHANICAL & ELECTRICAL TECHNOLOGY |