CN108481190B - Grinding tool for bearing hole of cycloidal gear and using method - Google Patents
Grinding tool for bearing hole of cycloidal gear and using method Download PDFInfo
- Publication number
- CN108481190B CN108481190B CN201711428821.5A CN201711428821A CN108481190B CN 108481190 B CN108481190 B CN 108481190B CN 201711428821 A CN201711428821 A CN 201711428821A CN 108481190 B CN108481190 B CN 108481190B
- Authority
- CN
- China
- Prior art keywords
- grinding
- grinding tool
- cycloidal gear
- elastic diaphragm
- pull
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 210000000078 claw Anatomy 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 239000012528 membrane Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a grinding tool for a bearing hole of a cycloid wheel and a using method, and belongs to the technical field of machining. The tool comprises a base with a hollow lower part, an elastic diaphragm in a buckling cover shape is fixed on the base, a pull-down cylinder is installed at the hollow part of the base, a tension rod of the pull-down cylinder is pressed and held in the center of the upper surface of the elastic diaphragm through a pressing block, the elastic diaphragm is provided with an annular centering boss, the centering boss is embedded into arc grooves matched with three plane supporting claws and three excircle clamping claw bottom surfaces which are uniformly distributed at intervals in a petal-shaped circumference and is fixedly connected with the inner side of the arc grooves, the upper surface of each plane supporting claw supports a cycloidal gear to be ground, and a profiling positioning tooth matched with the cycloidal gear to be ground is installed in the. The invention effectively improves the positioning precision, avoids various defects existing in paired grinding, obviously improves the grinding quality and simultaneously improves the consistency of efficiency and processing precision.
Description
Technical Field
The invention relates to a grinding tool and a using method thereof, in particular to a grinding tool for a bearing hole of a cycloid wheel and a using method thereof, and belongs to the technical field of machining.
Background
The RV reducer for the robot drives two cycloidal gears with phase difference to move through a crankshaft to realize large-reduction-ratio high-precision transmission, wherein the precision of the two cycloidal gears has great influence on the performance of the reducer. At present, most of robot RV reducers are used for matching two cycloidal gears when bearing holes of the cycloidal gears are finely ground, the consistency of the position degrees of the three bearing holes can hardly be ensured by single processing, in order to ensure the consistency of tooth shapes and the bearing holes, a double-cycloidal-gear-superposed one-time grinding method is always adopted, namely, the excircle centering of two cycloidal gears is utilized, the end surface of one cycloidal gear is used for determining a plane, and the end surface of the other cycloidal gear is compressed. In the prior art, the excircle centering of the cycloid wheel is inevitably matched with a tool, so that the central deviation cannot be eliminated even if a single piece is machined, and the outer diameters of two cycloid wheels have errors, so that the grinding size precision of a central bearing hole is influenced. In addition, the end faces of the lower cycloidal gears are fixed on a plane and pressed on the end faces of the upper cycloidal gears, and errors exist in the planeness of the two cycloidal gears, so that the errors are amplified in a doubling mode after superposition, and accumulated deviation is generated in the perpendicularity of the bearing hole as a result. In a word, practice proves that the dimensional accuracy, the position degree and the verticality of the cycloid wheel bearing hole processed by the prior art are difficult to guarantee, the consistency is poor, and the assembly accuracy and the performance of the RV reducer are influenced.
Object of the Invention
The invention aims to: aiming at the problems in the prior art, through structural improvement, the grinding tool for the bearing hole of the cycloid wheel can conveniently eliminate the clamping gap between a workpiece and the tool, so that the grinding precision and consistency of the bearing hole of the cycloid wheel are ensured, and meanwhile, a corresponding using method is provided, so that the quality of a cycloid speed reducer product is improved.
In order to achieve the aim, the grinding tool for the bearing hole of the cycloid wheel comprises a base with a hollow lower part, wherein a cover-buckled elastic diaphragm is fixed on the base, a pull-down cylinder is arranged at the hollow part of the base, and a tension rod of the pull-down cylinder is pressed and held in the center of the upper surface of the elastic diaphragm through a pressing block; the upper surface of the elastic diaphragm is provided with an annular centering boss formed by six segmental arcs, and the centering boss is respectively embedded into three plane supporting claws uniformly distributed at intervals on the circumference and arc grooves matched with the bottom surfaces of three excircle clamping claws to be fixedly connected to form a petal-shaped clamping structure; the upper surface of the plane supporting claw supports the cycloidal gear to be ground, the excircle clamping jaw is provided with an inner arc loosely matched with the outer diameter of the addendum circle of the cycloidal gear to be ground, and the middle part of the upper surface is provided with a profiling positioning tooth matched with the cycloidal gear to be ground.
When in use, the method comprises the following steps:
firstly, fixing a base of a cycloidal gear bearing hole grinding tool on a grinding processing equipment worktable;
secondly, placing the cycloidal gear to be ground on the upper surface of a plane supporting claw in position, and positioning by loosely matching an inner circular arc of an outer circular clamping jaw with an addendum circle of the cycloidal gear at the center and positioning at an angle by meshing with a profiling positioning tooth;
thirdly, controlling a pull-down cylinder to pull down the center of an elastic diaphragm, and drawing an excircle clamping jaw through a positioning boss to generate reducing deformation of an inner arc of an upper port so as to clamp a cycloidal gear in a centering manner;
fourthly, starting the grinding processing equipment to finish the fine grinding process of the required hole;
fifthly, releasing the pull-down cylinder to reset the elastic diaphragm and the excircle clamping jaw and loosening the cycloid wheel;
and sixthly, taking down the cycloidal gear for finishing the hole grinding, and cleaning the tool.
The invention effectively improves the positioning precision, avoids various defects existing in paired grinding and obviously improves the grinding quality although single-piece grinding, and meanwhile, the clamping is very simple (the disassembly and the assembly of the double-piece type are manually pressed for a long time), so the efficiency is improved, and the processing precision consistency is better than that of the traditional paired double-piece grinding.
Furthermore, a locking nut positioned in a depression in the middle of the pressing block is arranged on the external thread at the upper end of the tensioning rod of the pull-down cylinder.
Furthermore, the downward extending boss of the pressing block penetrates through the central hole of the elastic die piece.
Further, the lower surface of the radial expansion edge on the boss is pressed on the upper surface of the elastic diaphragm.
Further, the circumferential edge of the elastic diaphragm is protruded downwards.
Furthermore, the middle part of the upper surface of the excircle clamping jaw is provided with a recess for embedding the profiling positioning teeth.
Furthermore, the plane supporting claw and the excircle clamping jaw are integrated by the installation part at the bottom and the supporting part at the upper part through the inclined wall.
Drawings
The present invention will be described in further detail with reference to the following examples, which are given in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural view taken perpendicular to the sectional view of fig. 1.
Fig. 4 is a schematic perspective exploded view of fig. 1.
In the figure: 1-plane supporting claw, 2-excircle clamping jaw, 3-cycloidal gear, 4-process marking hole, 5-profiling positioning tooth, 6-pressing bolt, 7-elastic diaphragm, 8-locking bolt, 9-base, 10-pull-down cylinder, 11-pressing block, 12-locking nut and 13-locking bolt.
Detailed Description
The embodiment is a tooling for grinding bearing holes of cycloid gears in high precision in batch for robots, which is structurally characterized in that a cap-shaped elastic membrane 7 is fixed on a lower hollow base 9 through peripheral screws as shown in fig. 1, and the material of the membrane is 60Si2Mn, and the elastic modulus is 206GPa (both in the range of 190 GPa and 215 GPa). A pull-down cylinder 10 is arranged in the hollow part of the base 9, a locking nut 12 positioned in a depression in the middle of the pressing block 11 is arranged on the external thread of the upper end of a tension rod 10-1 of the pull-down cylinder 10, a downward extending boss of the pressing block 11 penetrates through a central hole of the elastic diaphragm 7 with the downward protruding circumferential edge, and the lower surface of a radial expansion edge on the boss is pressed on the upper surface of the elastic diaphragm 7. Six segmental arcs are arranged on the upper surface of the elastic diaphragm 7 to form an annular centering boss 7-1, and each centering boss is respectively embedded into arc-shaped grooves matched with the bottom surfaces of the three plane supporting claws 1 and the three excircle clamping claws 2 which are uniformly distributed at intervals on the circumference and fixedly connected through locking bolts 13 to form a petal-shaped clamping structure. The plane supporting claw 1 and the excircle clamping jaw 2 are integrated by a mounting part at the bottom and a supporting part at the upper part through an inclined wall. The upper surface of the plane supporting claw 1 supports the cycloidal gear to be ground as a positioning surface, the excircle clamping jaw 1 is provided with an inner arc loosely matched with the outer diameter of the addendum circle of the cycloidal gear to be ground, and a profiling positioning tooth 5 matched with the cycloidal gear to be ground is embedded in the middle depression of the upper surface through a compression bolt 6.
When in use, the method is operated according to the following steps:
firstly, fixing a base 9 of a cycloidal gear bearing hole grinding tool on a grinding processing equipment worktable.
And secondly, placing the cycloidal gear 3 to be ground on the upper surface of the plane supporting claw 1 in place, positioning by loosely matching the inner arc of the outer circular clamping jaw 2 with the addendum circle of the cycloidal gear 3 at the center, and positioning at an angle by meshing with the profiling positioning teeth 5.
And thirdly, controlling a pull-down cylinder 10 to pull down the center of an elastic diaphragm 7, and drawing the excircle clamping jaw 1 through a positioning boss to generate reducing deformation of an arc in an upper port, so as to clamp the cycloid wheel 3 in a centering manner.
And fourthly, starting the grinding equipment to finish the fine grinding process of the holes A, B, C.
And fifthly, releasing the pull-down cylinder 10 to reset the elastic diaphragm 7 and the excircle clamping jaw 1 and loosening the cycloid wheel 3.
And sixthly, taking down the cycloidal gear 3 which finishes hole grinding, and cleaning the tool.
The clamping tool of the embodiment carries out plane positioning through the attachment of the plane supporting claw 1 and the bottom surface of the workpiece 3, the excircle clamping jaw 2 is in small clearance fit with the excircle of the workpiece 3 to carry out center positioning, and the copying positioning teeth 5 are meshed with the teeth at the process marking holes 4 of the workpiece to be positioned. The profiling positioning teeth are uniformly distributed at three positions, and the high-precision angular positioning can be carried out on the cycloid wheel. After the workpiece 3 is placed correctly, the cylinder 10 is pulled downwards, the elastic diaphragm 7 is pressed downwards and deformed through the pressing block 11 and the locking nut 12, after the elastic diaphragm 7 is deformed, the excircle clamping jaw 2 and the excircle of the workpiece 3 are in interference fit in a small clearance fit mode, and a downward pressing force is applied, so that the workpiece 3 cannot be separated from the tool upwards in the machining process. The elastic diaphragm 7 is fixed on a base 9 through a locking bolt 8, the base 9 is fixed on a table top of the vertical machining center through the locking bolt 8, and the elastic diaphragm 7 is in locking fit with the bottom surfaces of the plane supporting claw 1 and the excircle clamping claw 2 through a locking bolt 13. Practice proves that the clamping tool and the positioning method of the elastic structure are ingeniously utilized, the fit clearance between the workpiece and the tool is eliminated, the technical problems that the batch machining size of the cycloidal gear for the speed reducer is unstable, the precision is low and the like are solved, the machining of the cycloidal gear for the speed reducer is realized under the condition that a special inner hole grinding machine is not provided, and the machining method with high efficiency and high precision is provided for the cycloidal gear with high precision requirement.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a grinding frock of cycloid wheel dead eye, includes lower part hollow base (9), its characterized in that: a cover-buckled elastic diaphragm (7) is fixed on the base, a pull-down cylinder (10) is arranged in the hollow part of the base, and a tension rod of the pull-down cylinder is pressed and held in the center of the upper surface of the elastic diaphragm through a pressing block (11); the upper surface of the elastic diaphragm is provided with six segmental arcs to form an annular centering boss (7-1), and the centering boss is respectively embedded into arc grooves matched with the bottom surfaces of three plane supporting claws (1) and three excircle clamping claws (2) which are uniformly distributed at intervals on the circumference and fixedly connected to form a petal-shaped clamping structure; the upper surface of the plane supporting claw supports the cycloidal gear to be ground, the excircle clamping jaw is provided with an inner circular arc loosely matched with the outer diameter of the addendum circle of the cycloidal gear to be ground, and the middle part of the upper surface is provided with a profiling positioning tooth (5) matched with the cycloidal gear to be ground; and a locking nut positioned in a depression in the middle of the pressing block is arranged on the external thread at the upper end of the tensioning rod of the pull-down cylinder.
2. The grinding tool for the cycloid wheel bearing hole as claimed in claim 1, wherein the grinding tool comprises: and the downward extending boss of the pressing block penetrates through the central hole of the elastic die piece.
3. The grinding tool for the cycloid wheel bearing hole as claimed in claim 2, wherein the grinding tool comprises: the lower surface of the radial expansion edge on the boss is pressed on the upper surface of the elastic diaphragm.
4. The grinding tool for the cycloid wheel bearing hole as claimed in claim 3, wherein the grinding tool comprises: the circumferential edge of the elastic diaphragm is protruded downwards.
5. The grinding tool for the cycloid wheel bearing hole as claimed in claim 4, wherein the grinding tool comprises: and the middle part of the upper surface of the outer circle clamping jaw is provided with a depression for embedding the profiling positioning teeth.
6. The grinding tool for the cycloid wheel bearing hole as claimed in claim 5, wherein the grinding tool comprises: the plane supporting claw and the excircle clamping jaw are integrated by the installation part at the bottom and the supporting part at the upper part through the inclined wall.
7. The use method of the grinding tool for the bearing hole of the cycloid wheel as claimed in any one of claims 1 to 6 is characterized by comprising the following steps:
firstly, fixing a base of a cycloidal gear bearing hole grinding tool on a grinding processing equipment worktable;
secondly, placing the cycloidal gear to be ground on the upper surface of a plane supporting claw in position, and positioning by loosely matching an inner circular arc of an outer circular clamping jaw with an addendum circle of the cycloidal gear at the center and positioning at an angle by meshing with a profiling positioning tooth;
thirdly, controlling a pull-down cylinder to pull down the center of an elastic diaphragm, and drawing an excircle clamping jaw through a positioning boss to generate reducing deformation of an inner arc of an upper port so as to clamp a cycloidal gear in a centering manner;
fourthly, starting the grinding processing equipment to finish the fine grinding process of the required hole;
fifthly, releasing the pull-down cylinder to reset the elastic diaphragm and the excircle clamping jaw and loosening the cycloid wheel;
and sixthly, taking down the cycloidal gear for finishing the hole grinding, and cleaning the tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428821.5A CN108481190B (en) | 2017-12-26 | 2017-12-26 | Grinding tool for bearing hole of cycloidal gear and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428821.5A CN108481190B (en) | 2017-12-26 | 2017-12-26 | Grinding tool for bearing hole of cycloidal gear and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108481190A CN108481190A (en) | 2018-09-04 |
| CN108481190B true CN108481190B (en) | 2020-07-03 |
Family
ID=63344049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711428821.5A Active CN108481190B (en) | 2017-12-26 | 2017-12-26 | Grinding tool for bearing hole of cycloidal gear and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108481190B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500453B (en) * | 2018-12-15 | 2020-05-22 | 宁波中大力德智能传动股份有限公司 | Cycloidal gear machining clamp |
| CN110202508B (en) * | 2019-06-20 | 2021-03-05 | 东莞市智赢智能装备有限公司 | Assembly line type robot system with multiple groups of gears and rapid positioning clamp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2568585A (en) * | 1946-09-20 | 1951-09-18 | Woodworth Co N A | Diaphragm chuck |
| EP2425917B1 (en) * | 2010-09-07 | 2013-08-28 | SMW-AUTOBLOK Spannsysteme GmbH | Diaphragm chuck |
| CN202207816U (en) * | 2011-06-23 | 2012-05-02 | 新乡日升数控轴承装备股份有限公司 | Diaphragm type automatic chuck |
| CN104001955A (en) * | 2014-05-21 | 2014-08-27 | 苏州锟恩电子科技有限公司 | Diaphragm chuck centering device |
| CN204018889U (en) * | 2014-07-09 | 2014-12-17 | 重庆红恩机械配件有限公司 | A kind of external toothing gear shaping frock |
-
2017
- 2017-12-26 CN CN201711428821.5A patent/CN108481190B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108481190A (en) | 2018-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210588231U (en) | Clamp for avoiding milling deformation of thin-wall casing appearance | |
| CN204603909U (en) | A kind of anti-deformation device of thin-wall tube-shaped element processing | |
| CN105563183A (en) | Process equipment for precisely machining thin-wall aluminum alloy cone and machining process thereof | |
| CN108481190B (en) | Grinding tool for bearing hole of cycloidal gear and using method | |
| CN104759653A (en) | Machining tool for thin-wall cylinder parts | |
| CN111421355B (en) | Annular thin plate machining tool and fixing method | |
| CN206185259U (en) | Dabber anchor clamps are used in processing | |
| CN208575540U (en) | A kind of device having both axial fast precise, radial direction centering and clamping function | |
| CN201102078Y (en) | Thin film chuck | |
| CN108544262B (en) | Multipurpose combined clamp | |
| CN106736668A (en) | NC milling universal chuck | |
| CN205020975U (en) | Thin wall ring gear class part gear shaping anchor clamps | |
| CN112719969A (en) | Large-scale thin wall spare damping clamping frock | |
| CN204135772U (en) | Synchro converter ring tooth holder | |
| CN214489744U (en) | Conical thin-wall ring piece machining device | |
| CN101758407B (en) | Multi-operation traveling tool | |
| CN211614941U (en) | Machining clamp device for vehicle differential case | |
| CN103465076A (en) | Four-point clamping fixture | |
| CN108927688B (en) | Clamping and rapid transposition device of clamp | |
| CN201815893U (en) | Novel and universal keyway milling fixture | |
| CN220362277U (en) | Frock that tube-shape yielding thin wall work piece was used | |
| CN219005328U (en) | Clamping frock suitable for machine casket class part | |
| CN111331393A (en) | Tool clamp for drilling evenly-divided hole plate | |
| CN218310930U (en) | Thin-wall cylinder part machining tool | |
| CN214685398U (en) | Dysmorphism base four-axis processing frock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180816 Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Applicant after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Applicant after: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Applicant before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee before: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China Patentee before: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. |