CN101279434A - Double-disk rotation eccentric V shaped groove grinding miller - Google Patents

Double-disk rotation eccentric V shaped groove grinding miller Download PDF

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Publication number
CN101279434A
CN101279434A CNA2008100614633A CN200810061463A CN101279434A CN 101279434 A CN101279434 A CN 101279434A CN A2008100614633 A CNA2008100614633 A CN A2008100614633A CN 200810061463 A CN200810061463 A CN 200810061463A CN 101279434 A CN101279434 A CN 101279434A
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CN
China
Prior art keywords
abrasive disk
lap
shaped groove
disk
abrasive
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.)
Pending
Application number
CNA2008100614633A
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Chinese (zh)
Inventor
袁巨龙
王志伟
钱苗
吕冰海
陶黎
陈锋
张克华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University of Technology ZJUT
Hunan University
Original Assignee
Zhejiang University of Technology ZJUT
Hunan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang University of Technology ZJUT, Hunan University filed Critical Zhejiang University of Technology ZJUT
Priority to CNA2008100614633A priority Critical patent/CN101279434A/en
Publication of CN101279434A publication Critical patent/CN101279434A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a double-disk autorotation eccentric V-shaped groove grinder, which comprises a frame, and an upper abrasive disk and a lower abrasive disk arranged on the frame; wherein, the upper abrasive disk is arranged on the spindle of the upper abrasive disk and the spindle of the upper abrasive disk is connected with the driving motor of the upper abrasive disk; the lower abrasive disk is connected with the driving motor of the lower abrasive disk, and the upper abrasive disk and the lower abrasive disk are arranged at the top and bottom. The frame comprises a frame body and an upper stent; wherein, the upper stent can be rotatablely arranged on the upper end of the frame body, and the upper abrasive disk is arranged on the upper stent while the lower abrasive disk is arranged on the frame body; at least three V-shaped grooves used for placing ball-billets are cut on the upper surface of the lower abrasive disk; each V-shaped groove is a concentric circle, the circle center of the concentric circle coincides with that of the lower abrasive disk, and the upper abrasive disk and the lower abrasive disk are eccentric with each other. The double-disk autorotation eccentric V-shaped groove grinder provided by the invention has simple structure and low manufacturing cost, and simultaneously has higher machining accuracy and machining efficiency.

Description

Double-disk rotation eccentric V shaped groove grinding miller
Technical field
The present invention relates to the bulb lapping device, particularly precise finiss/the polishing processing device of high-precision ceramic balls in high speed, the high-precision ceramic ball bearing belongs to the spherical part processing technology of high accuracy.
Background technology
High-precise ball is the critical elements in roundness measuring equipment, gyro, bearing and the accurate measurement, and the benchmark of Chang Zuowei accurate measurement, has crucial status in precision equipment and Precision Machining.Particularly in ball bearing, use in a large number, it is the vital part of ball bearing, the precision of bearing ball (spherical deviation, ball diameter variation and surface roughness) directly affects the technical indicators such as kinematic accuracy, noise and life-span of ball bearing, and then influences the performance of equipment, instrument.Compare with traditional bearing steel ball material (GCr15), that advanced ceramics materials such as silicon nitride have is wear-resisting, high temperature resistant, corrosion-resistant, nonmagnetic, low-density (for bearing steel about 40%), the big series of advantages such as (for 1.5 times of bearing steel) of coefficient of thermal expansion little (be bearing steel 25%) and elastic modelling quantity is considered to make the optimal material of bearing ball of working under ramjet, high speed and precision lathe, precision instrument high speed, high accuracy and the particular surroundings.Because advanced ceramics such as silicon nitride belong to hard crisp difficult-to-machine material, the Ceramic Balls blank behind the material sintering mainly adopts the method for grinding (roughing) → grinding (semifinishing) → polishing (fine finishining) to process.For the grinding/glossing of Ceramic Balls, process adopts free abrasive, under the effect of machinery, chemical effect, Ceramic Balls base surfacing is carried out small removal, to reach the raising dimensional accuracy, improves the purpose of surface integrity.Traditional Ceramic Balls grinding/polishing processing mainly is to carry out on the V-shaped groove milling apparatus of machining steel bearing ball, adopts hard, expensive diamond abrasive as abrasive material, the process-cycle long (finish the ceramic batch ball and need several time-of-weeks).Very long process and expensive diamond abrasive have caused high manufacturing cost, have limited the application of Ceramic Balls.Along with improving constantly of instrument and equipment precision, the machining accuracy of special substance spheroids such as Ceramic Balls is had higher requirement, need to improve working (machining) efficiency and uniformity simultaneously to reduce production costs.
Grinding/burnishing device is to the grinding precision and the efficient important influence of Ceramic Balls.In the process of lapping, the lapping mode of ball base and lap tool has directly determined the grinding balling-up campaign of ball base.And under the prerequisite that guarantees the quality of blank ball own and other processing conditions (pressure, speed, abrasive material), can the grinding trace evenly cover sphere is high-efficient grinding ball base, improves sphericity, obtains the key of high-accuracy ball.Therefore, must analyse in depth in the motion state of grinding/polishing process, grasp the reason that influences precision and efficient, rational equipment and corresponding processing technology could be provided for the processing of Ceramic Balls the running and the Ceramic Balls of grinding/burnishing device.
For the attrition process of Ceramic Balls, more existing both at home and abroad corresponding processing unit (plant)s, as: V-shaped groove abrasive working appts, circle groove abrasive working appts, conical disc abrasive working appts, angle of rotation ACTIVE CONTROL lapping device, magnetic suspension abrasive working appts etc.In the process of equipment such as V-shaped groove abrasive working appts, circle groove abrasive working appts, conical disc abrasive working appts, the ball base can only be made " constant relative bearing " and grind motion, the spin axis that is the ball base is fixed the space orientation of hollow shaft, and the ball base is around a fixing spin axis rotation.Practice and theory analysis show that all " constant relative bearing " grinds the grinding of moving to ball is disadvantageous; it is the annulus of axle with the ball base axis of rotation that the grinding trace that the contact point of ball base and abrasive disk forms on ball base surface is one group; abrasive disk carries out " repeatability " grinding along three coaxial circles traces of three contact points to the ball base; be unfavorable for that ball base surface obtains rapidly evenly to grind; in reality processing, need to rely on the ball base to skid; phenomenons such as stirring; make the spin axis of ball base take place slowly to change with the relative workpiece orientation of hollow shaft; reach the purpose of even grinding; but the variation of this spin angle is very slow; be at random; uncontrollable, thus limited the sphericity and the working (machining) efficiency of processing.But angle of rotation ACTIVE CONTROL lapping device has three abrasive disks of independent rotation, can change the orientation of the spin axis of adjusting the ball base by the control lap speed, the ball base can be made " in a disguised form to the orientation " and grind motion, the grinding trace on ball base surface is to be the space spherical curve of axle with the ball base axis of rotation, can cover most of even whole ball base surface, help ball base surface and obtain evenly, grind efficiently.But the device power source is many, and structure and control system complexity all have higher requirement, the processing cost height to manufacturing and assembly precision.The principal character of Ceramic Balls magnetic suspension attrition process is to adopt the high-efficient grinding of magnetic fluid technique realization to the ball base, except pressing mode difference to the ball base, it is basic identical with the motion mode in V-shaped groove attrition process and the conical disc attrition process that it grinds motion mode, therefore, sphericity is restricted equally in its process.Magnetic suspension abrasive working appts and control are complicated, and the cost of magnetic fluid is also higher.
Therefore,, be badly in need of a kind of existing higher processing precision and working (machining) efficiency for the processing of difficult-to-machine material high-precise balls such as Ceramic Balls, have again simple in structure, the Ceramic Balls grinding/polishing process equipment that manufacturing cost is lower.
Summary of the invention
In order to overcome the deficiency that to take into account machining accuracy efficient and cost of existing bulb lapping device, the invention provides a kind of simple in structure, low cost of manufacture, the double-disk rotation eccentric V shaped groove grinding miller that has higher processing precision and working (machining) efficiency simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of double-disk rotation eccentric V shaped groove grinding miller, comprise frame, rack-mounted top lap and following abrasive disk, described top lap is installed on the top lap main shaft, described top lap main shaft connects the top lap drive motors, described abrasive disk down connects abrasive disk drive motors down, described top lap and following abrasive disk are arranged up and down, described frame comprises body and upper bracket, described upper bracket is installed in rotation on the body upper end, install abrasive disk on the described upper bracket, abrasive disk down is installed on the described body, described abrasive disk upper surface down has more than three for the V-shaped groove of placing the ball base at least, described each bar V-shaped groove is a concentric circles, and the described concentrically ringed center of circle overlaps with the center of circle of following abrasive disk, and described top lap is eccentric mutually with following abrasive disk.
As preferred a kind of scheme: described upper bracket comprises column and crossbeam, and described column is fixedly mounted on the body, and described crossbeam is installed in rotation on the column upper end, installs the abrasive disk main shaft on the described crossbeam.
As preferred another kind of scheme: on the described crossbeam pressue device is installed, described pressue device lower end connects can regulate the pressure rod that presses down stroke, described pressure rod one end is sleeved on the top lap main shaft, described pressure rod one end is pressed on the ring flange of built-in butterfly spring, described ring flange is sleeved on the grinding spindle, fixedlys connected with top lap in the lower end of described ring flange.
Further, described ring flange connects dynamometer.
Have three V-shaped grooves on the abrasive disk under described, certainly, the bar number of V-shaped groove also can be 3,4,5,7, even more, can be configured according to actual needs.
Technical conceive of the present invention is: double-disk rotation eccentric V shaped groove grinding miller adopts two abrasive disks formation grinding assemblies up and down.Each free individual motor of upper and lower abrasive disk drives by driving shaft, and rotating speed is adjustable.The multiple tracks V-shaped groove is opened in following abrasive disk upper surface, compares with coaxial three dishes, magnetic fluid lapping mode, more is applicable to production in enormous quantities.The rotary main shaft of top lap is without the following center of the V-shaped groove of abrasive disk, i.e. the centre of gyration disalignment of two abrasive disks up and down, and the contact point of ball base and top lap will move along last disc radial.This kind mode is coaxial less demanding to the center of abrasive disk up and down, but grinding track is constantly changed, and compares with the V-shaped groove lapping mode, can obtain better spherical deviation.The rotation realization of the crossbeam of the setting of the different eccentric throws of top lap and following abrasive disk by being connected column.Pressue device (can be hydraulic pressure, air pressure or machinery pressurization) is installed in the middle of the crossbeam.The pressure rod lower end connects top lap, and pressure rod can move up and down the lifting that realizes top lap.When top lap with after the ball base contacts, pressure rod is passed to top lap to the ring flange of pressure by built-in butterfly spring, and the ball base is applied processing load.Process load by the travel condition that presses down of adjusting pressure rod, force value can show by dynamometer.By the stroke decision of pressure rod, in case stroke is decided, the position of top lap is just motionless, has guaranteed stable pressurization fully in the position of top lap.Beneficial effect of the present invention mainly shows: 1, each free individual motor of upper and lower abrasive disk drives, top lap has certain circumferential rotating speed, and upper and lower abrasive disk exists eccentric throw adjustable, makes groove endosphere base surface grinding track uniformity more can obtain better spherical deviation; 2, abrasive disk can leave the multiple tracks V-shaped groove down, and the ball base axis of rotation can be swung in 180 ° of scopes, and the lapping mode uniformity of each groove endosphere base is identical, and the processing high conformity more is applicable to production in enormous quantities; 3, on machining accuracy, efficient and frame for movement, has tangible comprehensive advantage.
Description of drawings
Fig. 1 is the structural representation of one of them embodiment of providing of the present invention, is the lapping device overall diagram.
Fig. 2 is grinding mechanism figure of the present invention.
Fig. 3 is an accurate ball surface grinding trace emulation schematic diagram under the present invention.
Fig. 4 is the schematic diagram of pressue device.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1~Fig. 4, a kind of double-disk rotation eccentric V shaped groove grinding miller, comprise frame, rack-mounted top lap 12 and following abrasive disk 13, described top lap 12 connects the top lap main shaft, described top lap main shaft connects top lap drive motors 8, described abrasive disk down 13 connects abrasive disk main shaft down, described abrasive disk main shaft down connects abrasive disk drive motors 1 down, described top lap 12 and following abrasive disk 13 are arranged up and down, described frame comprises body 2 and upper bracket, described upper bracket is installed in rotation on the body upper end, install abrasive disk 12 on the described upper bracket, abrasive disk 13 down is installed on the described body 2, described abrasive disk 13 upper surfaces down have more than three for the V-shaped groove of placing the ball base at least, described each bar V-shaped groove is a concentric circles, and the described concentrically ringed center of circle overlaps with the center of circle of following abrasive disk, and described top lap 12 is eccentric mutually with following abrasive disk 13.
Described upper bracket comprises column 3 and crossbeam 6, and described column 3 is fixedly mounted on the body 2, and described crossbeam 6 is installed in rotation on column 3 upper ends, installs the abrasive disk main shaft on the described crossbeam 6.
Pressue device 7 is installed on the described crossbeam 6, described pressue device 7 lower ends connect can regulate the pressure rod 4 that presses down stroke, described pressure rod 4 one ends are sleeved on the top lap main shaft, described pressure rod one end is pressed on the ring flange 11 of built-in butterfly spring, the lower end of described ring flange 11 is connected with top lap 12, fixedly connected with top lap main shaft 9 in the upper end of described ring flange 11, described ring flange is sleeved on the grinding spindle, fixedlys connected with top lap in the lower end of described ring flange.
Described abrasive disk main shaft 14 down is connected with the output shaft of following abrasive disk drive motors 1 by driving belt 15.
Ring flange 11 connects dynamometer 10.Ring flange 11 comprises upper flange plate and lower flange, and disk spring has been put in the centre, the mechanism of the transmission power that forms a whole together; Wherein lower flange is fixed on the top lap, and upper flange plate is positioned at above the spring, closely contacts with pressure rod.
Have three V-shaped grooves on the abrasive disk 13 under described, certainly, the bar number of V-shaped groove also can be 3,4,5,7, even more, can be configured according to actual needs.
As shown in Figure 1, wherein a kind of double autorotation grinding tray high-efficiency Ceramic Balls lapping device of providing of the present invention includes top lap, compositions such as abrasive disk, abrasive disk main shaft, column, pressue device, transmission mechanism, drive motors down.Top lap 12 is connected with column 3 by crossbeam 6.Crossbeam 6 can rotate, and drives the rotation of top lap 12, realizes the off-centre of top lap 12 and following abrasive disk 13.Pressue device 7 lower ends connect pressure rod 4.Pressure rod 4 one ends are sleeved on the top lap main shaft, and described pressure rod one end is pressed on the upper flange plate of ring flange 11, and top lap 12 is installed in the lower end of the lower flange of ring flange 11, realizes the lifting of top lap 12 by moving up and down of pressure rod 4.When top lap 12 with after the ball base contacts, pressure rod 4 is passed to top lap 12 to the ring flange of pressure by built-in butterfly spring, and the ball base is applied processing load.Provide processing load by the stroke that presses down of adjusting pressure rod 4, force value can show by dynamometer 10.By the stroke decision of pressure rod 4, in case stroke is decided, the position of top lap is just motionless, has guaranteed stable pressurization fully in the position of top lap.The capable groove of multiple tracks V left by abrasive disk 13, is used for placing ball base in batches.Upper and lower abrasive disk is driven by rotating band by motor respectively, independent rotation, and rotating speed is adjustable.

Claims (5)

1, a kind of double-disk rotation eccentric V shaped groove grinding miller, comprise frame, rack-mounted top lap and following abrasive disk, described top lap is installed on the top lap main shaft, described top lap main shaft connects the top lap drive motors, described abrasive disk down connects abrasive disk drive motors down, described top lap and following abrasive disk are arranged up and down, it is characterized in that: described frame comprises body and upper bracket, described upper bracket is installed in rotation on the body upper end, install abrasive disk on the described upper bracket, abrasive disk down is installed on the described body, described abrasive disk upper surface down has more than three for the V-shaped groove of placing the ball base at least, described each bar V-shaped groove is a concentric circles, and the described concentrically ringed center of circle overlaps with the center of circle of following abrasive disk, and described top lap is eccentric mutually with following abrasive disk.
2, double-disk rotation eccentric V shaped groove grinding miller as claimed in claim 1, it is characterized in that: described upper bracket comprises column and crossbeam, described column is fixedly mounted on the body, and described crossbeam is installed in rotation on the column upper end, installs the abrasive disk main shaft on the described crossbeam.
3, double-disk rotation eccentric V shaped groove grinding miller as claimed in claim 2, it is characterized in that: on the described crossbeam pressue device is installed, described pressue device lower end connects can regulate the pressure rod that presses down stroke, described pressure rod one end is sleeved on the top lap main shaft, described pressure rod one end is pressed on the ring flange of built-in butterfly spring, described ring flange is sleeved on the grinding spindle, fixedlys connected with top lap in the lower end of described ring flange.
4, double-disk rotation eccentric V shaped groove grinding miller as claimed in claim 2 is characterized in that: described ring flange connects dynamometer.
5, double-disk rotation eccentric V shaped groove grinding miller as claimed in claim 4 is characterized in that: have three V-shaped grooves on the abrasive disk under described.
CNA2008100614633A 2008-05-04 2008-05-04 Double-disk rotation eccentric V shaped groove grinding miller Pending CN101279434A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513915A (en) * 2011-11-30 2012-06-27 江苏智邦精工科技有限公司 Processing method of precision cylindrical part
CN103286701A (en) * 2013-06-08 2013-09-11 上海泛联科技股份有限公司 Technology for manufacturing grinding plate used for grinding ceramic ball
CN103600285A (en) * 2013-07-26 2014-02-26 浙江工业大学 Upper disc eccentric compression type cylindrical machining device of cylindrical parts
CN103991018A (en) * 2014-05-21 2014-08-20 浙江工业大学 High-accuracy sphere machining device based on eccentric variable-curvature V-shaped grooved disc
CN103991025A (en) * 2014-05-21 2014-08-20 浙江工业大学 High-accuracy ball body machining method through eccentric type curvature-variable groove
CN104596819A (en) * 2015-01-19 2015-05-06 中国人民解放军第四军医大学 Grinding device for biological tissue
CN104608047A (en) * 2014-12-01 2015-05-13 上海新跃仪表厂 High-precision spherical part batch production device and method
CN104440457B (en) * 2014-08-29 2017-04-12 浙江工业大学 High-precision ball machining method through spiral separation-type V-shaped groove
CN107052987A (en) * 2017-06-05 2017-08-18 南京航空航天大学 Applied to it is synchronous slightly grind, lappingout, the processing unit (plant) for polishing spheroid
CN107671704A (en) * 2016-08-01 2018-02-09 创新服务股份有限公司 Single needle grinder
CN109719603A (en) * 2017-10-31 2019-05-07 中国电子科技集团公司第四十八研究所 A kind of YIG bead burnishing device
CN110860997A (en) * 2019-10-22 2020-03-06 浙江工业大学 Variable friction coefficient processing method for ultra-precise sphere
CN112276785A (en) * 2020-10-16 2021-01-29 广州大学 Double-traveling-wave action bearing roller ultrasonic grinding device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513915A (en) * 2011-11-30 2012-06-27 江苏智邦精工科技有限公司 Processing method of precision cylindrical part
CN102513915B (en) * 2011-11-30 2014-02-12 江苏智邦精工科技有限公司 Processing method of precision cylindrical part
CN103286701A (en) * 2013-06-08 2013-09-11 上海泛联科技股份有限公司 Technology for manufacturing grinding plate used for grinding ceramic ball
CN103286701B (en) * 2013-06-08 2016-06-01 上海泛联科技股份有限公司 Manufacture the technique of the abrasive sheet being used for milled ceramic ball
CN103600285A (en) * 2013-07-26 2014-02-26 浙江工业大学 Upper disc eccentric compression type cylindrical machining device of cylindrical parts
CN103991018A (en) * 2014-05-21 2014-08-20 浙江工业大学 High-accuracy sphere machining device based on eccentric variable-curvature V-shaped grooved disc
CN103991025A (en) * 2014-05-21 2014-08-20 浙江工业大学 High-accuracy ball body machining method through eccentric type curvature-variable groove
CN104440457B (en) * 2014-08-29 2017-04-12 浙江工业大学 High-precision ball machining method through spiral separation-type V-shaped groove
CN104608047A (en) * 2014-12-01 2015-05-13 上海新跃仪表厂 High-precision spherical part batch production device and method
CN104596819A (en) * 2015-01-19 2015-05-06 中国人民解放军第四军医大学 Grinding device for biological tissue
CN104596819B (en) * 2015-01-19 2017-04-05 中国人民解放军第四军医大学 A kind of lapping device for biological tissue
CN107671704A (en) * 2016-08-01 2018-02-09 创新服务股份有限公司 Single needle grinder
CN107052987A (en) * 2017-06-05 2017-08-18 南京航空航天大学 Applied to it is synchronous slightly grind, lappingout, the processing unit (plant) for polishing spheroid
CN109719603A (en) * 2017-10-31 2019-05-07 中国电子科技集团公司第四十八研究所 A kind of YIG bead burnishing device
CN110860997A (en) * 2019-10-22 2020-03-06 浙江工业大学 Variable friction coefficient processing method for ultra-precise sphere
CN112276785A (en) * 2020-10-16 2021-01-29 广州大学 Double-traveling-wave action bearing roller ultrasonic grinding device

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