CN109500453B - Cycloidal gear machining clamp - Google Patents
Cycloidal gear machining clamp Download PDFInfo
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- CN109500453B CN109500453B CN201811537701.3A CN201811537701A CN109500453B CN 109500453 B CN109500453 B CN 109500453B CN 201811537701 A CN201811537701 A CN 201811537701A CN 109500453 B CN109500453 B CN 109500453B
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- diaphragm
- clamping jaw
- clamping
- terminal surface
- jaw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a cycloidal gear machining clamp which comprises a supporting claw, a positioning device and a clamping device, wherein the supporting claw is used for providing a placing platform for a gear; the clamping jaw is used for clamping the gear placed on the supporting jaw; the diaphragm is fixed on a shell and used for mounting the clamping jaw and the supporting jaw and controlling the clamping jaw to tighten or open to release clamping through deformation; and a driving element connected with the diaphragm and providing a deformation force to the diaphragm. When the device is used, the cycloid gear is placed on a placing platform formed on the supporting claw, then the driving element is started, and the driving element drives the clamping jaw to move to clamp the cycloid gear by pulling the membrane to deform. Or the driving element is started firstly, the membrane is pushed to open the clamping jaw, the cycloid gear is placed on a placing platform formed on the supporting jaw at the moment, and then the driving element is controlled to reset the membrane, so that clamping can be achieved.
Description
Technical Field
The invention relates to the technical field of gear machining clamps, in particular to a cycloidal gear machining clamp.
Background
The cycloid gear is a general name of a cylindrical gear with various cycloid or equidistant curves, and preferably, each piece is the same and can be interchanged and used without one-to-one processing.
The outer cycloid gear and the inner bearing hole of the cycloid gear have phase requirements and also have precision positioning requirements. The phase requirements of the two epicycloidal teeth and the central line of the bearing hole are within +/-0.01 degrees, the concentricity of the bearing hole and the epicycloidal teeth is within 0.005mm, the precision requirement is high, the common chuck is difficult to achieve, and the phase requirements are ensured by simultaneously grinding the epicycloidal teeth by adopting a group of two epicycloidal teeth at present.
And the epicycloidal tooth is processed by adopting the internal bearing hole positioning mode, if the processing precision requirement is 0.01mm, the concentricity requirement is 0.005mm, the diameter of the bearing hole distribution is A, and the diameter of the cycloidal segment pitch circle is D, then the concentricity requirement of the clamp is (A/D) × 0.005, namely the comprehensive installation requirement is about 0.0025mm, and the precision requirement of the clamp about 0.0025mm is too high, so that the fixture is difficult to achieve, and the overhigh precision also causes the overhigh production cost and the too short service life.
Disclosure of Invention
The invention aims to provide a cycloidal gear machining clamp which has low precision requirement on the clamp.
The technical purpose of the invention is realized by the following technical scheme:
a cycloidal gear machining clamp comprises a supporting claw, a positioning plate and a clamping plate, wherein the supporting claw is used for providing a placing platform for a gear; the clamping jaw is used for clamping the gear placed on the supporting jaw; the diaphragm is made of elastic steel materials, is fixed on a shell and used for installing the clamping jaw and the supporting jaw and controlling the clamping jaw to tighten or open to release the clamping through deformation; and a driving element connected with the diaphragm and providing a deformation force to the diaphragm.
So set up, when using, on placing the platform that forms on the support claw with the cycloid gear, then start drive element, make its deformation drive the clamping jaw action and live the cycloid gear centre gripping through the pulling diaphragm. Or the driving element is started firstly, the membrane is pushed to open the clamping jaw, the cycloid gear is placed on a placing platform formed on the supporting jaw at the moment, and then the driving element is controlled to reset the membrane, so that clamping can be achieved. In the mode, as the outer cycloid teeth are adopted to determine the phase and the position, the precision requirement of the clamp can be reduced (D/A)2And the repeated precision of the clamp can meet the processing requirement basically only by ensuring within 0.005 mm.
More preferably: the membrane is provided with a guide deformation part in an annular structure, and the guide deformation part is formed by inwards recessing one end of the clamping jaw back to the membrane.
So set up, the thickness that guides deformation portion position is little for the place of main deformation is just in guide deformation portion when the deformation takes place for the diaphragm atress, and the deformation point is concentrated more, and the deformation area reduces, controls the deformation volume of each point more easily, thereby the precision is higher when making the clamping jaw carry out the centre gripping along with diaphragm deformation.
More preferably: the edge of diaphragm is provided with the installation department that thickness is greater than the diaphragm.
So set up, the installation department sets up and is used for being connected with the casing, can have better installation intensity, simultaneously, also can avoid the mounted position also to take place to warp after the thickening sets up, avoids the interference point, improves the precision.
More preferably: the installation department is formed with the step on the diaphragm one end terminal surface that is dorsad the clamping jaw, guide deformation position in the installation department with the step department that the diaphragm is connected.
So set up, will guide deformation portion to set up in the place that the atress is concentrated most, make it take place deformation more easily, further improve the deformation precision.
More preferably: the sunken depth of guide deformation portion is along being the gradual big setting of diaphragm centre to the edge direction.
So set up, in the place that the degree of concentration of its atress also can change along with the depth change, make the place that the degree of depth is big concentrate more.
More preferably: the installation department inside wall is sunken to be formed with the leading edge, the leading edge is connected with guide deformation portion.
More preferably: the installation department inside wall is sunken to be formed with the leading edge, the leading edge is connected with guide deformation portion.
So set up, improve the elastic deformation ability of guide deformation portion, also can further improve the deformation precision of diaphragm simultaneously.
More preferably: an arc surface is inverted between the guide deformation part and the inner side wall of the installation part.
So set up, further improve the elastic deformation ability of guide deformation portion.
More preferably: the diaphragm clamping device is characterized in that a connecting portion is arranged on the end face of the diaphragm in a protruding mode, a connecting groove for inserting the connecting portion is formed in the end faces of the bottoms of the supporting claw and the clamping jaw, the end face of the connecting portion is abutted against the bottom of the connecting groove, and a gap is formed between the end faces of the bottoms of the supporting claw and the clamping jaw and the end face of the diaphragm.
So set up, the setting of connecting portion can increase local thickness, plays the installation and avoids the effect of deformation to with more deformation points to guide deformation portion expulsion, make on the diaphragm deformation part concentrate more and even, thereby further improve the centre gripping accuracy. In addition, when the deformation is reset, the interference and collision between the supporting claw and the clamping jaw can be avoided by the gap between the bottom end face of the supporting claw and the clamping jaw and the end face of the membrane, the service life is prolonged, and the noise is reduced.
More preferably: the diaphragm clamping device is characterized in that a connecting portion is arranged on the end face of the diaphragm in a protruding mode, a connecting groove for inserting the connecting portion is formed in the end faces of the bottoms of the supporting claw and the clamping claw, the end faces of the bottoms of the supporting claw and the clamping claw are tightly abutted to the end face of the diaphragm, and the maximum distance between the end face of the bottom of the clamping claw and the center of the diaphragm is smaller than the minimum distance between the guide deformation portion and the center of the diaphragm.
So set up, the terminal surface supports tight back clamping jaw bottom and can produce prestressing force on the diaphragm, increases its contact part's the deformation degree of difficulty to indirectly improve the accuracy of centre gripping.
More preferably: the stroke of each clamping jaw on the clamping jaw in the whole clamping action process is less than 0.01 mm.
So set up, the activity of jack catch itself is just few for error in whole process can be far less than 0.01mm, consequently, its error is very easy to be controlled.
More preferably: the jack catch is provided with a round hole-shaped jack, and a cylindrical abutting column abutting against the gear is inserted into the jack.
By the arrangement, the influence of the tooth profile on the periphery of the gear is avoided, the gear is clamped in a line contact mode, and the error is reduced to the lowest degree.
More preferably: the clamping jaws on the clamping jaw are three in number and are uniformly arranged around the axis.
So set up, the stability of three-jaw structure setting at diaphragm deformation in-process centre gripping gear is best, has better centre gripping precision simultaneously.
In conclusion, the invention has the following beneficial effects:
1. the clamping is realized by driving the clamping jaws to move slightly in a rigid membrane deformation mode, so that the precision requirement on the clamp is reduced, and meanwhile, the precision is extremely high;
2. the deformation points are concentrated by guiding the deformation part, so that the deformation is more controllable, and the clamping precision of the clamping jaw is increased finally.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a front view of the first embodiment, showing the internal structure;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic structural diagram of a diaphragm according to an embodiment;
FIG. 5 is a schematic diagram of a split structure according to the first embodiment;
FIG. 6 is a schematic structural view of a middle clamping jaw and a supporting jaw in the first embodiment;
fig. 7 is a schematic structural diagram of the second embodiment.
In the figure, 1, a housing; 11. a chassis; 12. a housing; 2. a drive element; 3. a membrane; 31. an installation part; 32. a connecting portion; 4. a clamping jaw; 41. connecting grooves; 42. a jack; 5. supporting claws; 6. a guide deformation part; 7. a circular arc surface; 8. guiding edges; 9. a gap; 10. and abutting against the column.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1: a cycloidal gear machining fixture is shown in figures 1 and 2 and comprises a shell 1, a supporting claw 5, a clamping jaw 4, a membrane 3 and a driving element 2.
The housing 1 includes a base plate 11 and a casing 12, and the casing 12 is cylindrical with openings at both ends and is mounted on the base plate 11 by bolts.
The drive element 2 may be a hydraulic or pneumatic cylinder, preferably a hydraulic cylinder. The drive element 2 is fixedly mounted on the chassis 11 and is located within the housing 12.
The diaphragm 3 is made of elastic steel material, an installation part 31 is integrally arranged on the periphery of the diaphragm 3, the thickness of the installation part 31 is larger than that of the diaphragm 3, and the installation part 31 is connected with the shell 12 through bolts. A through hole is arranged in the middle of the diaphragm 3, and a piston rod of the driving element 2 is fixedly connected with the diaphragm 3 through the through hole of the diaphragm 3.
Referring to fig. 2 and 3, the mounting portion 31 is formed with a step on an end surface of the diaphragm 3 facing the housing 12, and a guide deformation portion 6 is provided on the end surface of the diaphragm 3 facing the housing 12. Combine figure 4, guide deformation portion 6 to be the annular setting to through the inside sunken formation of terminal surface, guide deformation portion 6 is located the step department that installation department 31 and diaphragm 3 are connected, and the sunken degree of depth of guide deformation portion 6 is to edge direction along diaphragm 3 middle and is gradually big setting.
As shown in fig. 3 and 4, a guide edge 8 is formed on the inner side wall of the mounting portion 31 in a recessed manner, and the guide edge 8 is connected to the guide deformation portion 6. An arc surface 7 is inverted between the guide deformation part 6 and the inner side wall of the mounting part 31.
As shown in fig. 5 and 6, the end face of the membrane 3 is convexly provided with a connecting portion 32, the end faces of the bottoms of the supporting claw 5 and the clamping jaw 4 are provided with a connecting groove 41 into which the connecting portion 32 is inserted, and the connecting groove 41 is fixedly connected with the connecting portion 32 through a bolt after being inserted, so that the supporting claw 5 and the clamping jaw 4 can be installed and fixed. Referring to fig. 3, the end surface of the connecting portion 32 abuts against the bottom of the connecting groove 41, and a gap 9 is provided between the end surfaces of the bottom of the holding claw 5 and the holding jaw 4 and the end surface of the film 3.
The height of the supporting claw 5 is lower than that of the clamping claw 4, the number of the clamping claws in the supporting claw 5 and the clamping claw 4 is three, the clamping claws are uniformly distributed around the axial line, and the clamping claws in the supporting claw 5 and the clamping claw 4 are arranged in a staggered mode.
Referring to fig. 1, the jaw is provided with a circular hole-shaped insertion hole 42, and a cylindrical abutting column 10 abutting against the gear is inserted into the insertion hole 42.
Wherein the stroke of each clamping jaw on the clamping jaw 4 in the whole clamping action process is less than 0.01 mm.
When the clamping jaw is used, the cycloid gear is placed on a placing platform formed on the supporting jaw 5, and the cycloid gear is axially positioned below the three abutting columns 10 on the clamping jaw 4. At this time, the driving element 2 is started, the membrane 3 is pulled to bend the guide deformation part 6, and the clamping jaw 4 moves slightly along with the deformation to clamp the cycloid gear.
Example 2: as shown in fig. 7, the difference from embodiment 1 is that the bottom end surfaces of the holding claw 5 and the holding claw 4 are arranged to abut against the end surface of the film sheet 3, and the maximum distance between the bottom end surface of the holding claw 4 and the center of the film sheet 3 is smaller than the minimum distance between the guide deformation part 6 and the center of the film sheet 3.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.
Claims (4)
1. The utility model provides a cycloid gear adds clamping apparatus which characterized in that: comprises that
The supporting claw (5) is used for providing a placing platform for the gear;
the clamping jaw (4) is used for clamping the gear placed on the supporting jaw (5);
the diaphragm (3) is made of elastic steel materials, is fixed on the shell (1), is used for installing the clamping jaw (4) and the supporting jaw (5), and controls the clamping jaw (4) to tighten or open to release clamping through deformation;
a drive element (2) connected to the diaphragm (3) and providing a deforming force to the diaphragm (3);
the diaphragm (3) is provided with a guide deformation part (6) in an annular structure, and the guide deformation part (6) is formed by inwards recessing one end back to the clamping jaw (4);
the edge of the diaphragm (3) is provided with a mounting part (31) with the thickness larger than that of the diaphragm (3);
a step is formed on the end face, back to the clamping jaw (4), of the diaphragm (3) of the mounting part (31), and the guide deformation part (6) is located at the step where the mounting part (31) is connected with the diaphragm (3);
the depth of the concave part of the guide deformation part (6) is gradually increased along the direction from the middle to the edge of the diaphragm (3);
sunken leading limit (8) of being formed with on installation department (31) inside wall, leading limit (8) are connected with guide deformation portion (6).
2. The cycloid gear machining jig of claim 1 wherein: an arc surface (7) is inverted between the guide deformation part (6) and the inner side wall of the mounting part (31).
3. The jig for machining a cycloid gear according to any one of claims 1 to 2, wherein: protruding on the terminal surface of diaphragm (3) is provided with connecting portion (32), be provided with on the bottom terminal surface of support claw (5) and clamping jaw (4) and supply connecting portion (32) male spread groove (41), the terminal surface of connecting portion (32) supports tightly with the bottom of spread groove (41) and sets up, just be provided with clearance (9) between the bottom terminal surface of support claw (5) and clamping jaw (4) and diaphragm (3) terminal surface.
4. The jig for machining a cycloid gear according to any one of claims 1 to 2, wherein: protruding connecting portion (32) of being provided with on the terminal surface of diaphragm (3), be provided with on the bottom terminal surface of holding in the palm claw (5) and clamping jaw (4) and supply connecting portion (32) male spread groove (41), the bottom terminal surface of holding in the palm claw (5) and clamping jaw (4) supports tightly the setting with the terminal surface of diaphragm (3), the biggest distance between clamping jaw (4) bottom terminal surface and diaphragm (3) center, be less than the minimum distance between guide deformation portion (6) and diaphragm (3) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811537701.3A CN109500453B (en) | 2018-12-15 | 2018-12-15 | Cycloidal gear machining clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811537701.3A CN109500453B (en) | 2018-12-15 | 2018-12-15 | Cycloidal gear machining clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109500453A CN109500453A (en) | 2019-03-22 |
| CN109500453B true CN109500453B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811537701.3A Active CN109500453B (en) | 2018-12-15 | 2018-12-15 | Cycloidal gear machining clamp |
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| Country | Link |
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| CN (1) | CN109500453B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531231A (en) * | 2020-04-30 | 2020-08-14 | 重庆市璧山区茂渝机械制造有限公司 | Positioning tool for gear ring machining |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481190A (en) * | 2017-12-26 | 2018-09-04 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of grinding fixture and application method of cycloid wheel bearing bore |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2958532A (en) * | 1959-02-13 | 1960-11-01 | Erickson Tool Co | Double acting diaphragm chuck |
| US4067586A (en) * | 1976-11-18 | 1978-01-10 | Mp Tool & Engineering Company | Diaphragm chuck |
| US5326114A (en) * | 1992-04-08 | 1994-07-05 | Cincinnati Milacron, Inc. | Quickly interchangeable chuck with mechanical power assist clamping capabilities |
| JP2806894B2 (en) * | 1996-06-18 | 1998-09-30 | 政人 石井 | Work support device |
| RU2120356C1 (en) * | 1997-01-16 | 1998-10-20 | Открытое акционерное общество "ГАЗ" | Diaphragm chuck gear cluster |
| US6089578A (en) * | 1999-05-04 | 2000-07-18 | Chai; Cheng-Chung | Chuck assembly |
| WO2007106661A2 (en) * | 2006-03-16 | 2007-09-20 | Three M Tool And Machine | Improved chuck assembly |
| ATE411126T1 (en) * | 2006-03-22 | 2008-10-15 | Smw Autoblok Spannsysteme Gmbh | MEMBRANE CHUCK |
| EP2425917B1 (en) * | 2010-09-07 | 2013-08-28 | SMW-AUTOBLOK Spannsysteme GmbH | Diaphragm chuck |
| CN203900530U (en) * | 2014-05-21 | 2014-10-29 | 苏州锟恩电子科技有限公司 | Membrane chuck centering device |
-
2018
- 2018-12-15 CN CN201811537701.3A patent/CN109500453B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481190A (en) * | 2017-12-26 | 2018-09-04 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of grinding fixture and application method of cycloid wheel bearing bore |
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| Publication number | Publication date |
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| CN109500453A (en) | 2019-03-22 |
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