CN112589674A - Clamping device capable of being used for improving grinding precision of shaft parts - Google Patents
Clamping device capable of being used for improving grinding precision of shaft parts Download PDFInfo
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- CN112589674A CN112589674A CN202011584907.9A CN202011584907A CN112589674A CN 112589674 A CN112589674 A CN 112589674A CN 202011584907 A CN202011584907 A CN 202011584907A CN 112589674 A CN112589674 A CN 112589674A
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- live center
- locking device
- shaft parts
- clamping device
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- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention belongs to the technical field of manufacturing of aviation equipment, and particularly relates to a clamping device capable of improving grinding precision of shaft parts. The clamping device for improving the grinding precision of the shaft parts, provided by the invention, can enable an operator to very easily realize the processes of clamping, aligning and repairing the shaft parts, greatly improve the grinding precision of the shaft parts and obviously reduce the rejection rate of the parts.
Description
Technical Field
The invention belongs to the technical field of manufacturing of aviation equipment, and particularly relates to a clamping device capable of improving grinding precision of shaft parts.
Background
In the aviation equipment manufacturing field, abrasive machining is indispensable in the course of working of axle type part, along with the improvement of aviation equipment reliability requirement, the surface accuracy requirement of axle type part is higher in various actuator cylinder structures.
At present, in the grinding process of shaft parts in factories, a clamping method is adopted, wherein two ends of a shaft are jacked up by using a tip, a driving force is provided by the left side of a grinding machine to drive the shaft parts to rotate, and meanwhile, the surfaces of the shaft parts are ground by using a rotating grinding wheel perpendicular to the shaft parts.
The existing grinding technology has the following problems: 1) under the condition that the positions of centre holes of two end faces of the shaft part are not centered, the axis of the part and the connecting line of two centre points are not on the same straight line, the part is easy to be eccentric in the rotating process, and the grinding precision is difficult to control; 2) when the shaft parts with complex structures are subjected to secondary grinding processing or grinding repair, the positions of the thimble holes are more difficult to be centered and adjusted, so that the precision of the grinding processing cannot be controlled, and the rejection rate of the parts is high. In view of this, the invention provides a clamping device for improving the grinding precision of shaft parts and avoiding the scrapping of the parts.
Disclosure of Invention
The invention aims to provide a clamping device for improving the grinding precision of shaft parts, so as to solve the problems in the prior art.
The technical scheme of the invention is as follows:
the utility model provides a clamping device that can be used to improve axle type part grinding precision, includes four-jaw chuck 1, ring flange 2, locking device 3, live center 4, taut pull rod 5, adapter 6 and locking screw 7.
The four-jaw chuck 1 is locked on the flange plate 2 through a plurality of long screws 17.
The front end of the live center 4 is provided with a movable end which rotates randomly along the circumferential direction of the live center 4, and the inner wall of the central through hole of the flange plate 2 is fixedly connected with the movable end of the live center 4, so that the four-jaw chuck 1 is connected with the live center 4.
The locking device 3 is arranged at a fixed end at the rear part of the movable end of the live center 4, the locking device 3 comprises a positioning screw 10, an adjusting nut 11, a cam 12, a spring 13 and a bolt 14, the locking device 3 is locked at the fixed end of the live center 4 through the positioning screw 10 on the side wall of the locking device and the adjusting nut 11 in a matching mode, the cam 12 is locked at the fixed end of the live center 4, a groove is formed in the side wall of the locking device 3, the cam 12 is connected in the groove through a shaft, the bolt 14 is arranged on the locking device 3, one end of the spring 13 is connected with the bolt 14, and the other end of the spring 13.
One end of the adapter 6 is provided with an internal thread, and the other end of the adapter is provided with an external thread. The adapter 6 is provided with one end with an external thread and is in threaded connection with the rear end of the live center 4, the adapter 6 is provided with one end with an internal thread and is in threaded connection with one end of the tensioning pull rod 5, and the connection between the tensioning pull rod 5 and the live center 4 is realized; the other end of the tensioning pull rod 5 is provided with an external thread, the other end is provided with a gasket 15 and a nut 16, the nut 16 is matched with the external thread, and the gasket 15 is arranged on the inner side of the nut 16.
The four-jaw chuck 1 comprises a chuck body 8 and movable jaws 9, wherein the end face of the chuck body 8 is respectively provided with a sliding groove along the circumferential direction, a mounting groove along the radial sliding groove and used for mounting the movable jaws 9, and each movable jaw 9 moves independently.
Further, the locking screw 7 penetrates through the locking device 3, is in threaded connection with a threaded hole of the four-jaw chuck 1, and is limited by the cam 12 to lock the four-jaw chuck 1.
Furthermore, the end face of the flange 2 is provided with four through holes, and the number of the corresponding long screws 17 is 4.
The invention has the advantages that:
the clamping device for improving the grinding precision of the shaft parts, provided by the invention, can enable an operator to very easily realize the processes of clamping, aligning and repairing the shaft parts, greatly improve the grinding precision of the shaft parts and obviously reduce the rejection rate of the parts. Specifically, the clamping device for improving the grinding precision of the shaft parts, provided by the invention, has the following advantages:
(1) by adding the adjustable four-jaw chuck, the flange plate and the locking device on the basis of the existing centre, the lathe has the characteristics of simplicity in operation, convenience in unloading and high universality.
(2) Four claws of a four-rotating chuck in the device can be independently adjusted through adjusting holes, so that the shaft part clamping axis can be finely adjusted in the horizontal direction and the vertical direction, the efficiency of shaft part grinding alignment and clamping adjustment is favorably improved, and the grinding precision is improved by adjusting the connecting line of the axis of the part and two tops to be a straight line.
(3) By adding the locking device, the functions and effects of the existing fixed center can be kept, the chuck is convenient to stabilize, and clamping and alignment are facilitated.
(4) In the process of repairing and processing the parts, the grinding precision of the shaft parts is greatly improved, and the rejection rate of the parts is obviously reduced.
(5) The clamping and aligning device and the method are safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of a clamping device for improving grinding accuracy of shaft parts according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a clamping device for improving the grinding accuracy of shaft parts according to an embodiment of the present invention.
Fig. 3 is a side view of a clamping device that can be used for improving the grinding accuracy of a shaft-like part according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a four-jaw chuck of a clamping device that can be used for improving the grinding accuracy of shaft parts according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a flange plate of the clamping device for improving the grinding accuracy of the shaft-like part, provided in the embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a locking device of a clamping device that can be used for improving the grinding accuracy of shaft parts according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a live center of a clamping device for improving grinding accuracy of shaft parts, provided in an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of an adapter of the clamping device for improving the grinding accuracy of the shaft-like part according to the embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a tensioning pull rod of the clamping device provided in the embodiment of the invention, which can be used for improving the grinding precision of shaft parts.
Fig. 10 is an assembly schematic diagram of a clamping device that can be used for improving the grinding accuracy of a shaft-like part according to an embodiment of the present invention.
In the figure: 1 a four-jaw chuck; 2, a flange plate; 3, locking device; 4, live center; 5, tensioning the pull rod; 6, a switching head; 7 locking the screw; 8, a chuck body; 9 movable clamping jaws; 10, positioning a screw; 11 adjusting the nut; 12 cams; 13 a spring; 14, bolts; 15 a gasket; 16 nuts; 17 long screws.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
It is to be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the invention. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment.
In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 is a schematic structural diagram of a clamping device for improving grinding accuracy of shaft parts according to an embodiment of the present invention. Fig. 2 is a schematic perspective view of a clamping device for improving the grinding accuracy of shaft parts according to an embodiment of the present invention. Referring to fig. 1 and fig. 2, the present embodiment provides a clamping device for improving the grinding accuracy of shaft parts, which includes a four-jaw chuck 1, a flange 2, a locking device 3, a live center 4, a tightening pull rod 5, an adapter 6, and a locking screw 7.
Fig. 5 is a schematic structural diagram of a flange plate of the clamping device for improving the grinding accuracy of the shaft-like part, provided in the embodiment of the present invention. Fig. 10 is an assembly schematic diagram of a clamping device that can be used for improving the grinding accuracy of a shaft-like part according to an embodiment of the present invention. Referring to fig. 1, 5 and 10, in this embodiment, a four-jaw chuck 1 is locked to a flange 2 by a plurality of long screws 17. Specifically, the end face of the flange 2 is provided with four through holes, and the number of the corresponding long screws 17 is 4.
Fig. 7 is a schematic structural diagram of a live center of a clamping device for improving grinding accuracy of shaft parts, provided in an embodiment of the present invention. Referring to fig. 7, in the present embodiment, the front end of the live center 4 is provided with a movable end which can rotate freely in the circumferential direction of the live center 4. The inner wall of the central through hole of the flange plate 2 is connected with the movable end of the live center 4 in a welding mode, and finally the four-jaw chuck 1 is connected with the live center 4.
Fig. 6 is a schematic structural diagram of a locking device of a clamping device that can be used for improving the grinding accuracy of shaft parts according to an embodiment of the present invention. Referring to fig. 6, the locking device 3 includes a positioning screw 10, an adjusting nut 11, a cam 12, a spring 13 and a bolt 14, the locking device 3 is disposed at a fixed end located at the rear portion of the movable end of the live center 4, the locking device 3 is locked at the fixed end of the live center 4 through the positioning screw 10 located on the side wall of the locking device 3 in cooperation with the adjusting nut 11 and the cam 12, a slot is formed in the side wall of the locking device 3, the cam 12 is connected in the slot through a shaft, the bolt 14 is disposed on the locking device 3, one end of the spring 13 is connected with the bolt 14, and the other end of the spring 13 is connected with the.
Fig. 8 is a schematic structural diagram of an adapter of the clamping device for improving the grinding accuracy of the shaft-like part according to the embodiment of the present invention. Referring to fig. 8, one end of the adapter 6 is provided with an internal thread and the other end is provided with an external thread.
Fig. 9 is a schematic structural diagram of a tensioning pull rod of the clamping device provided in the embodiment of the invention, which can be used for improving the grinding precision of shaft parts. Referring to fig. 9, the tension pull rod 5 and the live center 4 are connected together through the internal and external threads of the adapter 6. Specifically, adapter 6 is provided with the one end of external screw thread, with the rear end threaded connection of live center 4, and adapter 6 is provided with the one end of internal screw thread, with the one end threaded connection of taut pull rod 5, finally realizes being connected of taut pull rod 5 and live center 4. The other end of the tension rod 5 is provided with an external thread, the end is provided with a gasket 15 and a nut 16, the nut 16 is matched with the external thread, and the gasket 15 is arranged on the inner side of the nut 16.
Fig. 4 is a schematic structural diagram of a four-jaw chuck of a clamping device that can be used for improving the grinding accuracy of shaft parts according to an embodiment of the present invention. Fig. 3 is a side view of a clamping device that can be used for improving the grinding accuracy of a shaft-like part according to an embodiment of the present invention. Referring to fig. 3 and 4, in the present embodiment, the four-jaw chuck 1 includes a chuck body 8 and movable jaws 9, wherein a circumferential sliding groove, a radial sliding groove and a mounting groove for mounting the movable jaws 9 are respectively formed on an end surface of the chuck body 8, and each movable jaw 9 moves independently without linkage. Referring to fig. 3, in the embodiment, when the four-jaw chuck 1 needs to be fixed and does not need to rotate, the locking screw 7 passes through the locking device 3 and is screwed into the threaded hole of the four-jaw chuck 1, and is limited by the cam 12, so that the four-jaw chuck 1 is locked.
Can be used to improve the structure and the theory of operation of the clamping device of axle type part grinding precision:
the tail part of the live center 4 is firstly screwed into the adapter 6, after the live center is arranged in a tailstock of a grinding machine tool, the live center is connected with the adapter 6 through the tensioning pull rod 5 in a tensioning mode, the four-jaw chuck 1 is locked on the flange plate 2 through the threads of the long screw 17, the flange plate 2 is welded at the front end of the live center 4, and the device can clamp the outer surface of a part through the four jaws after being fixed and can rotate together with the part after being clamped. Before grinding the part, the outer surface of the clamped part is aligned by striking a meter, and if the outer surface of the part needs to be finely adjusted, the four movable clamping jaws 9 are respectively adjusted according to high and low points until the outer circle of the part loses the jump, and the part is clamped for repairing and processing.
To sum up:
1. the invention relates to a device which is modified on the basis of two centers of the existing grinding machine.
2. The four-jaw chuck is fixed on the flange plate through screws, and the flange plate and the live center are connected together in a welding mode, so that the linkage of the live center and the four-jaw chuck can be realized.
3. The locking mechanism comprises 5 parts such as a positioning screw, an adjusting nut, a cam, a spring, a bolt and the like, and the positioning screw can penetrate through the locking device and is screwed into the threaded hole to realize the locking effect on the four-jaw chuck.
4. According to the invention, the four-jaw chuck is fixed on the flange plate through screws, and the fine adjustment of the shaft axis of the clamping end of the shaft part to the horizontal direction and the vertical direction can be realized by adjusting 4 movable jaws.
5. Be connected through the bearing between live center and the grinding machine, install ring flange and four commentaries on classics chuck additional on live center after, the focus position of live center squints to the exposed core skew, can cause the unstable problem of live center at the grinding in-process, the one end processing of taut pull rod has the screw thread, the afterbody through spiro union mode and live center is fixed together, the other end of taut pull rod has disk column structure, along with screwing up of nut, disk column structure can be in the same place with the bearing extrusion of lathe, reach fixed live center and bearing effect, guarantee that live center and four-jaw chuck can not thrown away, and then play protection operating personnel's effect.
The above description of exemplary embodiments has been presented only to illustrate the technical solution of the invention and is not intended to be exhaustive or to limit the invention to the precise form described. Obviously, many modifications and variations are possible in light of the above teaching to those skilled in the art. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to thereby enable others skilled in the art to understand, implement and utilize the invention in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Claims (3)
1. A clamping device for improving the grinding precision of shaft parts is characterized by comprising a four-jaw chuck (1), a flange plate (2), a locking device (3), a live center (4), a tensioning pull rod (5), an adapter (6) and a locking screw (7);
the four-jaw chuck (1) is locked on the flange plate (2) through a plurality of long screws (17);
the front end of the live center (4) is provided with a movable end which rotates along the circumferential direction of the live center (4), and the inner wall of the central through hole of the flange plate (2) is fixedly connected with the movable end of the live center (4) so as to connect the four-jaw chuck (1) with the live center (4);
the locking device (3) is arranged at a fixed end positioned at the rear part of the movable end of the live center (4), the locking device (3) comprises a positioning screw (10), an adjusting nut (11), a cam (12), a spring (13) and a bolt (14), the locking device (3) is locked at the fixed end of the live center (4) through the positioning screw (10) on the side wall of the locking device in a matching mode of the adjusting nut (11) and the cam (12), a groove is formed in the side wall of the locking device (3), the cam (12) is connected in the groove through a shaft, the bolt (14) is arranged on the locking device (3), one end of the spring (13) is connected with the bolt (14), and the other end of the spring (13) is connected with the cam (12);
one end of the adapter (6) is provided with an internal thread, and the other end of the adapter is provided with an external thread; the adapter (6) is provided with one end with an external thread and is in threaded connection with the rear end of the live center (4), the adapter (6) is provided with one end with an internal thread and is in threaded connection with one end of the tensioning pull rod (5), and the connection between the tensioning pull rod (5) and the live center (4) is realized;
the other end of the tensioning pull rod (5) is provided with an external thread, the other end is provided with a gasket (15) and a nut (16), the nut (16) is matched with the external thread, and the gasket (15) is arranged on the inner side of the nut (16);
the four-jaw chuck (1) comprises a chuck body (8) and movable jaws (9), wherein sliding grooves formed in the circumferential direction of the chuck body (8), sliding grooves formed in the radial direction of the chuck body and mounting grooves used for mounting the movable jaws (9) are formed in the end face of the chuck body, and the movable jaws (9) move independently.
2. The clamping device for improving the grinding precision of shaft parts according to claim 1 is characterized in that the locking screw (7) penetrates through the locking device (3) and is in threaded connection with a threaded hole of the four-jaw chuck (1) and limited by the cam (12) so as to lock the four-jaw chuck (1).
3. The clamping device for improving the grinding precision of shaft parts according to claim 1 or 2, characterized in that the end face of the flange (2) is provided with four through holes, and 4 corresponding long screws (17) are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584907.9A CN112589674B (en) | 2020-12-28 | 2020-12-28 | Clamping device capable of being used for improving grinding precision of shaft parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584907.9A CN112589674B (en) | 2020-12-28 | 2020-12-28 | Clamping device capable of being used for improving grinding precision of shaft parts |
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| CN112589674A true CN112589674A (en) | 2021-04-02 |
| CN112589674B CN112589674B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011584907.9A Active CN112589674B (en) | 2020-12-28 | 2020-12-28 | Clamping device capable of being used for improving grinding precision of shaft parts |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2790639Y (en) * | 2005-05-23 | 2006-06-28 | 金国平 | Clamping center |
| CN104209857A (en) * | 2014-07-25 | 2014-12-17 | 余姚市锋利电动工具厂（普通合伙） | Workpiece clamping device and workpiece clamping method for cylindrical grinding machine |
| CN204221593U (en) * | 2014-09-11 | 2015-03-25 | 沈阳机床股份有限公司齿轮分公司 | The internal grinder clamping device of 4 chucks and scroll chuck |
| CN204308746U (en) * | 2014-11-18 | 2015-05-06 | 宁波美德机器人有限公司 | A kind of floating clamp |
| CN205009051U (en) * | 2015-09-29 | 2016-02-03 | 洛阳轴研科技股份有限公司 | Use driver plate device in grinding of rigid shaft class part hole |
| CN205520794U (en) * | 2016-04-12 | 2016-08-31 | 重庆精惠工业服务有限公司 | A positioning and clamping device that is used for grinding of axle type part hole |
| CN109277863A (en) * | 2017-07-21 | 2019-01-29 | 北京遥感设备研究所 | A kind of quick clamping device for sleeve part machining |
| CN109676548A (en) * | 2018-12-29 | 2019-04-26 | 大连长丰实业总公司 | A kind of sheet parts clamping device |
| CN111571372A (en) * | 2020-05-14 | 2020-08-25 | 横店集团英洛华电气有限公司 | Automatic feeding and discharging method for shaft workpiece grinding |
| CN211804863U (en) * | 2020-01-08 | 2020-10-30 | 株洲易力达机电有限公司 | Centre clamp |
| CN214080910U (en) * | 2020-12-28 | 2021-08-31 | 大连长丰实业总公司 | Clamping device capable of being used for improving grinding precision of shaft parts |
-
2020
- 2020-12-28 CN CN202011584907.9A patent/CN112589674B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2790639Y (en) * | 2005-05-23 | 2006-06-28 | 金国平 | Clamping center |
| CN104209857A (en) * | 2014-07-25 | 2014-12-17 | 余姚市锋利电动工具厂（普通合伙） | Workpiece clamping device and workpiece clamping method for cylindrical grinding machine |
| CN204221593U (en) * | 2014-09-11 | 2015-03-25 | 沈阳机床股份有限公司齿轮分公司 | The internal grinder clamping device of 4 chucks and scroll chuck |
| CN204308746U (en) * | 2014-11-18 | 2015-05-06 | 宁波美德机器人有限公司 | A kind of floating clamp |
| CN205009051U (en) * | 2015-09-29 | 2016-02-03 | 洛阳轴研科技股份有限公司 | Use driver plate device in grinding of rigid shaft class part hole |
| CN205520794U (en) * | 2016-04-12 | 2016-08-31 | 重庆精惠工业服务有限公司 | A positioning and clamping device that is used for grinding of axle type part hole |
| CN109277863A (en) * | 2017-07-21 | 2019-01-29 | 北京遥感设备研究所 | A kind of quick clamping device for sleeve part machining |
| CN109676548A (en) * | 2018-12-29 | 2019-04-26 | 大连长丰实业总公司 | A kind of sheet parts clamping device |
| CN211804863U (en) * | 2020-01-08 | 2020-10-30 | 株洲易力达机电有限公司 | Centre clamp |
| CN111571372A (en) * | 2020-05-14 | 2020-08-25 | 横店集团英洛华电气有限公司 | Automatic feeding and discharging method for shaft workpiece grinding |
| CN214080910U (en) * | 2020-12-28 | 2021-08-31 | 大连长丰实业总公司 | Clamping device capable of being used for improving grinding precision of shaft parts |
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| Publication number | Publication date |
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| CN112589674B (en) | 2024-06-14 |
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