CN104786110A - Axial ultrasonic vibration high-speed grinding device oriented to finish machining of inner circle of miniature bearing - Google Patents
Axial ultrasonic vibration high-speed grinding device oriented to finish machining of inner circle of miniature bearing Download PDFInfo
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- CN104786110A CN104786110A CN201410024755.5A CN201410024755A CN104786110A CN 104786110 A CN104786110 A CN 104786110A CN 201410024755 A CN201410024755 A CN 201410024755A CN 104786110 A CN104786110 A CN 104786110A
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- speed
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- main shaft
- guide rail
- ultrasonic vibration
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
Abstract
Disclosed is an axial ultrasonic vibration high-speed grinding device oriented to finish machining of an inner circle of a miniature bearing. The axial ultrasonic vibration high-speed grinding device oriented to finish machining of the inner circle of the miniature bearing comprises a base, a lead screw support, a lead screw, a workpiece grinding area, a grinding wheel, a grinding wheel clamp, a high-speed electric spindle, an elastic supporting block, a spindle limiting plate, an amplitude-change pole, a fixing frame, an ultrasonic transducer, a workbench, a servo motor, horizontal guide rails, perpendicular guide rails, a horizontal sliding platform and a linear motor. The axial ultrasonic vibration high-speed grinding device oriented to finish machining of the inner circle of the miniature bearing is technically characterized in that the grinding wheel is driven by the high-speed electric spindle to conduct high-speed rotation, rapid axial locating of the grinding wheel is achieved through driving of the servo motor, ultrasonic vibration is applied to achieve axial micro-feed movement of the grinding wheel, and the linear motor controls precise radial feed movement of the grinding wheel. The axial ultrasonic vibration high-speed grinding device can improve the grinding efficiency, and improve the roughness of a machined surface and the distribution conditions of residual stress, so that the integral quality of a machined part is guaranteed.
Description
Technical field
The present invention relates to a kind of inner circle high-speed grinding device, be specifically related to a kind of towards miniature bearing inner circle accurately machined axial ultrasonic vibration high-speed grinding device.
Background technology
Along with the continuous microminiaturization of all types of industries equipment and slewing equipment, lightweight and thin-walled property, miniature bearing, as a member in bearing extended familys, more and more comes into one's own and favors, and the demand of market to miniature bearing is also more and more powerful.In fact, miniature bearing has wide application in dual-use industry-by-industry, as office apparatus, micromachine, dental drill, video recorder magnetic drum, rotary encoder, computer peripheral equipment, optical fibre feeding device, optical exposure device, fine measuring instrument, microrobot, minute vehicle etc.
The processing of the manufacture of miniature bearing mainly inner and outer ring, spin and retainer.With regard to the formation mechenism of bearing ring quality, grinding process is the most important, because the size of lasso part, shape and positional precision ensure primarily of grinding process.At present, the grinding of miniature bearing lasso is all carry out on special bearing-ring grinder, and the axially reciprocating of emery wheel adopts stepper motor or driven by servomotor, and its reciprocating frequence is lower, and dynamic property is poor, causes the quality of processing parts unstable.Axial ultrasonic vibration grinding is a kind of new technology applying axial ultrasonic vibration on emery wheel, in order to replace the reciprocating motion in traditional miniature bearing lasso grinding process, grinding efficiency can be improved, improve the roughness of finished surface and the distribution situation of residual stress, thus ensure the total quality of processing parts.Although ultrasonic vibration secondary process technology has the precedent of successful Application in other field, by less for the report that this technology is applied to internal grinding.Chinese Patent Application No. is disclose a kind of ultrasonic vibration internal grinding attachment in 201320125984.7, the assemblies such as the ultrasonic transformer in this device and ultrasonic transducer are all positioned in the middle of motor and emery wheel, along with main shaft rotates together, structure is comparatively complicated, in the high-speed grinding of the speed of mainshaft higher than 150000rpm, therefore and be not suitable for the application scenario of high-speed grinding there is higher technology and realize difficulty, be difficult to the dynamic property of assurance device entirety.
Summary of the invention
The present invention is a kind of towards miniature bearing inner circle accurately machined axial ultrasonic vibration high-speed grinding device.High-speed electric main shaft drives emery wheel to carry out High Rotation Speed, and the rapid axial being realized emery wheel by driven by servomotor is located, and realize the axial Fine Feed motion of emery wheel by applying ultrasonic vibration, the accurate radial feed being controlled emery wheel by linear electric motors moves.
For achieving the above object, the technical solution used in the present invention is:
A kind of towards miniature bearing inner circle accurately machined axial ultrasonic vibration high-speed grinding device, comprise base 1, leading screw supporting 2, leading screw 3, workpiece grinding area 4, emery wheel 5, Grinding wheel holder 6, high-speed electric main shaft 7, elastic supporting block 8, main shaft limiting plate 9, ultrasonic transformer 10, fixed mount 11, ultrasonic transducer 12, workbench 13, servomotor 14, horizontal guide rail 15, vertical guide rail 16, horizontal sliding table 17 and linear electric motors 18.
Described workpiece grinding area 4 is positioned in the middle of the left end of base 1; Horizontal guide rail 15 is installed in parallel in the both sides, middle part of base 1; Leading screw 3 one end and leading screw support 2 and are connected, and the other end is connected with servomotor 14, are arranged in the middle of in the middle part of base 1, parallel with horizontal guide rail 15; Horizontal sliding table 17 is connected with leading screw 3 and horizontal guide rail 15, is arranged in the middle part of base 1; Vertical guide rail 16 is installed in parallel in horizontal sliding table 17 two ends; Linear electric motors 18 are arranged in the middle part of horizontal sliding table 17, parallel with vertical guide rail 16; Workbench 13 is connected with vertical guide rail 16 and linear electric motors 18, is arranged on horizontal sliding table 17; Elastic supporting block 8 is arranged in the middle of the left part of workbench 13; High-speed electric main shaft 7 is fixed on elastic supporting block 8; Main shaft limiting plate 9 covers high-speed electric main shaft 7, in the middle of the left part being arranged on workbench 13; Grinding wheel holder 6 is arranged on the output of high-speed electric main shaft 7; Emery wheel 5 is arranged on Grinding wheel holder 6; Fixed mount 11 is arranged on the right part of workbench 13; Ultrasonic transformer 10 is arranged on fixed mount 11, and installation site is at the nodal point place of ultrasonic transformer 10, and one end is connected with high-speed electric main shaft 7, and the other end is connected with ultrasonic transducer 12.
The grinding method of described workpiece grinding area (4) is common centering internal grinding or centerless internal grinding.
Described emery wheel 5 adopts diameter to be less than the plating individual layer cBN emery wheel of 3mm.
The rotating speed of described high-speed electric main shaft 7 is higher than 150000rpm.
The beneficial effect that the present invention has is:
1. the present invention is directed to the application scenario of inner circle high-speed grinding, the axial Fine Feed motion of emery wheel is realized by applying ultrasonic vibration, can grinding efficiency be improved, improve the roughness of finished surface and the distribution situation of residual stress, thus ensure the total quality of processing parts.
2. the present invention uses high-speed electric main shaft can ensure, when grinding wheel diameter less (< 3mm), still to have higher grinding speed, thus ensures the surface quality of processing parts.
Accompanying drawing explanation
Fig. 1 is the schematic front view of structure of the present invention;
Fig. 2 is the schematic top plan view of structure of the present invention;
In figure: 1, base; 2, leading screw supporting; 3, leading screw; 4, workpiece grinding area; 5, emery wheel; 6, Grinding wheel holder; 7, high-speed electric main shaft; 8, elastic supporting block; 9, main shaft limiting plate; 10, ultrasonic transformer; 11, fixed mount; 12, ultrasonic transducer; 13, workbench; 14, servomotor; 15, horizontal guide rail; 16, vertical guide rail; 17, horizontal sliding table; 18, linear electric motors.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, 2, structure of the present invention and operation principle as follows:
The present invention includes base 1, leading screw supporting 2, leading screw 3, workpiece grinding area 4, emery wheel 5, Grinding wheel holder 6, high-speed electric main shaft 7, elastic supporting block 8, main shaft limiting plate 9, ultrasonic transformer 10, fixed mount 11, ultrasonic transducer 12, workbench 13, servomotor 14, horizontal guide rail 15, vertical guide rail 16, horizontal sliding table 17 and linear electric motors 18.
Described workpiece grinding area 4 is positioned in the middle of the left end of base 1, because structure of the present invention is simple, is applicable to the inner circle Speed Grinding of various ways, can be applicable to common centering internal grinder or centreless grinding machine internal.Horizontal guide rail 15 is installed in parallel in the both sides, middle part of base 1; Leading screw 3 one end and leading screw support 2 and are connected, and the other end is connected with servomotor 14, are arranged in the middle of in the middle part of base 1, parallel with horizontal guide rail 15; Horizontal sliding table 17 is connected with leading screw 3 and horizontal guide rail 15, is arranged in the middle part of base 1; Servomotor 14 can drive leading screw 3 to rotate, and drives horizontal sliding table 17 to slide along horizontal guide rail 15, realizes the axial fast feed of emery wheel 5.Vertical guide rail 16 is installed in parallel in horizontal sliding table 17 two ends; Linear electric motors 18 are arranged in the middle part of horizontal sliding table 17, parallel with vertical guide rail 16; Workbench 13 is connected with vertical guide rail 16 and linear electric motors 18, is arranged on horizontal sliding table 17; Linear electric motors 18 select cored formula straight line dynamo-electric, and workbench 13 can be driven to slide along vertical guide rail 16, realize the accurate radial feed motion of emery wheel 5.Elastic supporting block 8 is arranged in the middle of the left part of workbench 13; High-speed electric main shaft 7 is fixed on elastic supporting block 8; Main shaft limiting plate 9 covers high-speed electric main shaft 7, in the middle of the left part being arranged on workbench 13; The high-speed electric main shaft 7 be fixed on elastic supporting block 8 has certain free degree, can along each to slight oscillatory; Main shaft limiting plate 9 plays the effect of restriction high-speed electric main shaft 7 other free degree, makes high-speed electric main shaft 7 only can along the axis of emery wheel 5 do ultrasonic vibration campaign.Grinding wheel holder 6 is arranged on the output of high-speed electric main shaft 7; Emery wheel 5 is arranged on Grinding wheel holder 6; High-speed electric main shaft 7 can drive emery wheel 5 High Rotation Speed to carry out grinding.Fixed mount 11 is arranged on the right part of workbench 13; Ultrasonic transformer 10 is arranged on fixed mount 11, and installation site is at the nodal point place of ultrasonic transformer 10, and one end is connected with high-speed electric main shaft 7, and the other end is connected with ultrasonic transducer 12; Select vibration frequency to be 15kHz, peak swing is the ultrasonic transducer 12 of 30 μm; Select gain be 1: 1.5 titanium alloy firm ultrasonic transformer 10, high-speed electric main shaft 7 axial amplitude can be increased; Ultrasonic transducer 12 converts electrical energy into the mechanical energy of ultrasonic vibration, is delivered to emery wheel 5 via ultrasonic transformer 10 and high-speed electric main shaft 7, realizes axial ultrasonic vibration during grinding.
Described emery wheel 5 adopts diameter to be less than the plating individual layer cBN emery wheel of 3mm.Cubic boron nitride (cBN) is the superhard material that a kind of heat endurance is very high, has good wearability, corrosion resistance and thermal conductivity, can cancel the crushing technique in traditional grinding, thus improves working (machining) efficiency.
The rotating speed of described high-speed electric main shaft 7, higher than 150000rpm, can ensure, when grinding wheel diameter less (< 3mm), still to have higher grinding speed, thus ensures the surface quality of processing parts.
A kind of procedure of processing towards miniature bearing inner circle accurately machined axial ultrasonic vibration high-speed grinding device of the present invention is as follows:
1. open high-speed electric main shaft 7, drive emery wheel 5 to carry out High Rotation Speed;
2. driven by servomotor 14, realize the axial quick position of emery wheel 5, make emery wheel 5 enter workpiece grinding area 4;
3. after axial F.F. puts in place, open ultrasonic transducer 12, realize the axial ultrasonic vibration of emery wheel 5;
4. driven by linear electric motors 18, according to the stock removal of setting, realize the accurate radial feed motion of emery wheel 5 with certain feed speed; After grinding completes, emery wheel 5 is radially return;
5. driven by servomotor 14, the axis realizing emery wheel 5 exits fast; If next part need be processed, then, after waiting for the part exchanging in workpiece grinding area 4, repeat step 2 ~ 5; If processing operation completes, then closing high-speed electro spindle 7 and ultrasonic transducer 12, initial point return by workbench 13.
Claims (3)
1. one kind is vibrated high-speed grinding device towards the accurately machined axial ultrasonic of miniature bearing inner circle, it is characterized in that: comprise base (1), leading screw supporting (2), leading screw (3), workpiece grinding area (4), emery wheel (5), Grinding wheel holder (6), high-speed electric main shaft (7), elastic supporting block (8), main shaft limiting plate (9), ultrasonic transformer (10), fixed mount (11), ultrasonic transducer (12), workbench (13), servomotor (14), horizontal guide rail (15), vertical guide rail (16), horizontal sliding table (17) and linear electric motors (18),
Described workpiece grinding area (4) is positioned in the middle of the left end of base (1); Horizontal guide rail (15) is installed in parallel in the both sides, middle part of base (1); Leading screw (3) one end is supported (2) and is connected with leading screw, the other end is connected with servomotor (14), is arranged in the middle of base (1) middle part, parallel with horizontal guide rail (15); Horizontal sliding table (17) is connected with leading screw (3) and horizontal guide rail (15), is arranged on base (1) middle part; Vertical guide rail (16) is installed in parallel in horizontal sliding table (17) two ends; Linear electric motors (18) are arranged on horizontal sliding table (17) middle part, parallel with vertical guide rail (16); Workbench (13) is connected with vertical guide rail (16) and linear electric motors (18), is arranged on horizontal sliding table (17); Elastic supporting block (8) is arranged in the middle of the left part of workbench (13); High-speed electric main shaft (7) is fixed on elastic supporting block (8); Main shaft limiting plate (9) covers high-speed electric main shaft (7), in the middle of the left part being arranged on workbench (13); Grinding wheel holder (6) is arranged on the output of high-speed electric main shaft (7); Emery wheel (5) is arranged on Grinding wheel holder (6); Fixed mount (11) is arranged on the right part of workbench (13); Ultrasonic transformer (10) is arranged on fixed mount (11), and installation site is at the nodal point place of ultrasonic transformer (10), and one end is connected with high-speed electric main shaft (7), and the other end is connected with ultrasonic transducer (12).
2. one according to claim 1 is towards miniature bearing inner circle accurately machined axial ultrasonic vibration high-speed grinding device, it is characterized in that: described emery wheel (5) adopts diameter to be less than the plating individual layer cBN emery wheel of 3mm.
3. one according to claim 1 is towards miniature bearing inner circle accurately machined axial ultrasonic vibration high-speed grinding device, it is characterized in that: the rotating speed of described high-speed electric main shaft (7) is higher than 150000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024755.5A CN104786110B (en) | 2014-01-20 | 2014-01-20 | It is a kind of to vibrate high-speed grinding device towards the axial ultrasonic that miniature bearing inner circle is finished |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024755.5A CN104786110B (en) | 2014-01-20 | 2014-01-20 | It is a kind of to vibrate high-speed grinding device towards the axial ultrasonic that miniature bearing inner circle is finished |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104786110A true CN104786110A (en) | 2015-07-22 |
| CN104786110B CN104786110B (en) | 2017-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410024755.5A Expired - Fee Related CN104786110B (en) | 2014-01-20 | 2014-01-20 | It is a kind of to vibrate high-speed grinding device towards the axial ultrasonic that miniature bearing inner circle is finished |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807699A (en) * | 2019-03-13 | 2019-05-28 | 江苏申阳电梯部件有限公司 | A kind of device and method of staircase driving spindle welding point ultrasound polishing |
| CN111906601A (en) * | 2020-08-24 | 2020-11-10 | 钟健辉 | Ultrasonic grinding and polishing system and method for rotor wing frame of unmanned aerial vehicle |
| CN113500476A (en) * | 2021-07-27 | 2021-10-15 | 四川深北电路科技有限公司 | Outer end face polishing device and method for ceramic mixed-compression integrated circuit board |
| CN113601320A (en) * | 2021-07-28 | 2021-11-05 | 浙江大学 | Floating non-contact type ultrasonic-enhanced flexible sub-aperture polishing device and method |
| CN114952206A (en) * | 2022-07-13 | 2022-08-30 | 宁波大学 | Machining method of bearing ring |
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- 2014-01-20 CN CN201410024755.5A patent/CN104786110B/en not_active Expired - Fee Related
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807699A (en) * | 2019-03-13 | 2019-05-28 | 江苏申阳电梯部件有限公司 | A kind of device and method of staircase driving spindle welding point ultrasound polishing |
| CN111906601A (en) * | 2020-08-24 | 2020-11-10 | 钟健辉 | Ultrasonic grinding and polishing system and method for rotor wing frame of unmanned aerial vehicle |
| CN113500476A (en) * | 2021-07-27 | 2021-10-15 | 四川深北电路科技有限公司 | Outer end face polishing device and method for ceramic mixed-compression integrated circuit board |
| CN113601320A (en) * | 2021-07-28 | 2021-11-05 | 浙江大学 | Floating non-contact type ultrasonic-enhanced flexible sub-aperture polishing device and method |
| CN113601320B (en) * | 2021-07-28 | 2022-06-07 | 浙江大学 | Floating non-contact type ultrasonic-enhanced flexible sub-aperture polishing device and method |
| CN114952206A (en) * | 2022-07-13 | 2022-08-30 | 宁波大学 | Machining method of bearing ring |
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| CN104786110B (en) | 2017-07-18 |
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Granted publication date: 20170718 Termination date: 20190120 |