CN103231287A - Centreless grinding device and application principle thereof - Google Patents
Centreless grinding device and application principle thereof Download PDFInfo
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- CN103231287A CN103231287A CN2013101698251A CN201310169825A CN103231287A CN 103231287 A CN103231287 A CN 103231287A CN 2013101698251 A CN2013101698251 A CN 2013101698251A CN 201310169825 A CN201310169825 A CN 201310169825A CN 103231287 A CN103231287 A CN 103231287A
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Abstract
The invention discloses a centreless grinding device. The centreless grinding device comprises a main grinding wheel and a supporting plate which is used for supporting workpieces; a supersonic vibration plate is arranged beside the main grinding wheel; the supporting plate is arranged under a gap which is arranged between the main grinding wheel and the supersonic vibration plate; a screw rod sleeve is connected under the supersonic vibration plate; a ball screw rod is arranged inside the screw rod sleeve; one end of the ball screw rod is connected with a stepping motor; the screw rod sleeve is arranged on a linear guide rail; the supersonic vibration plate is formed by an elastic metal plate and four piezoelectric ceramics; the elastic metal plate is provided with even piezoelectric ceramics; a power amplifier is connected between every two piezoelectric ceramics which are arranged in an interval mode; every power amplifier is connected with a signal generator; the end surface of the elastic metal plate is provided with friction pieces with the height of 0.5 mm; and an application principle of the centreless grinding device is that the supersonic vibration plate and the supporting plate simultaneously support and control the motion of the workpieces and perform grinding machining of micro parts. The centreless grinding device has the advantages of being simple in structure, small in error, high in accuracy and high quality.
Description
Technical field
The present invention relates to a kind of centerless grinding device and application principle thereof of centerless grinding device, particularly a kind of micro-workpiece, micro-workpiece is the following round piece of diameter 2mm.
Background technology
At present, as shown in Figure 1, centerless grinding is when carrying out cylindricalo grinding usually, and workpiece is placed between main emery wheel and the guide wheel, by the pallet supporting of its below, and by the guide wheel driven rotary.In traditional centerless grinding technology, be to obtain desired shapes tolerance, surface accuracy and higher working (machining) efficiency, centerless grinder must possess high rigidity, relatively large emery wheel and guide wheel, and will accurately control the motion of guide wheel.The workpiece machining accuracy depends on circularity and the running accuracy thereof of guide wheel, and the main shaft of high-precision dressing technique and high running accuracy is essential for guide wheel, therefore needs to install additional rotation control assembly and trimming device etc. at centerless grinder.Because the limitation of structure, traditional centerless grinding equipment is not suitable for diameter less than the processing of the micro-workpiece of 2mm.
Summary of the invention
The objective of the invention is in order to overcome above deficiency, a kind of centerless grinding device and application principle thereof of micro-workpiece are provided, solve the centerless grinding problem of micro-workpiece, the rotation error that can effectively avoid simultaneously the deviation from circular from that caused by guide wheel and guide wheel main shaft to cause improves the workpiece running accuracy.
Purpose of the present invention is achieved through the following technical solutions: a kind of centerless grinding device comprises main emery wheel and is used for the supporting plate of supporting workpiece, the other ultrasonic vibration plate that is provided with of main emery wheel, supporting plate places the below, gap between main emery wheel and the ultrasonic vibration plate, ultrasonic vibration plate below is connected with screw set, be provided with ball-screw in the screw set, one end of ball-screw is connected with stepper motor, screw set places on the line slideway, the ultrasonic vibration plate is made up of elastic metal sheet and piezoelectric ceramics, elastic metal sheet is provided with the even numbered blocks piezoelectric ceramics, per two piezoelectric ceramics separately are connected with a power amplifier, each first power amplifier all links to each other with a signal generator, and the end face of elastic metal sheet is consolidated with the friction plate that thickness is 0.5mm.
The present invention is applicable to the centerless grinding of the workpiece of diameter below 2mm.
A kind of application principle of centerless grinding device, the ultrasonic vibration plate is bonded on the elastic metal sheet by described piezoelectric ceramics and constitutes, producing phase difference by signal generator is two AC signals of ψ, and amplify after-applied on elastic metal sheet by two power amplifiers, by crooked on the synthetic described elastic metal sheet and the vertically vibration of both direction, end face at elastic metal sheet produces ultrasonic elliptical vibratory, add man-hour carrying out centerless grinding, by elastic metal sheet and supporting plate supporting workpiece, rotatablely moving by the control of the frictional force between workpiece and the elastic metal sheet of workpiece, the workpiece peripheral speed is identical with the linear velocity of the elliptical vibration of elastic metal sheet end face contact position.
The present invention compared with prior art has the following advantages: the present invention is the effect that replaces directive wheel in traditional centerless grinder by the ultrasonic vibration plate, the ultrasonic vibration plate is bonded on the elastic metal sheet by piezoelectric ceramics and constitutes, two AC signals (surpassing 20kHz) that will have phase difference amplify after-applied on piezoelectric ceramics by power amplifier, by crooked on the synthetic elastic metal sheet and the vertically vibration of both direction, end face at oscillating plate produces ultrasonic elliptical vibratory, rotatablely moving by the control of the frictional force between workpiece and the metallic plate of workpiece, the workpiece peripheral speed is identical with the linear velocity of the elliptical vibration of metallic plate end face contact position.Because the present invention utilizes the ultrasonic elliptical vibratory plate to replace directive wheel and relevant attachment device thereof in the present centerless grinding device, structure is simplified, can process by the present invention for the fine workpiece below the diameter 2mm, and, the rotation error that this method can effectively avoid the deviation from circular from that caused by guide wheel and guide wheel main shaft to cause, improve the workpiece running accuracy, guaranteed grinding quality.
Description of drawings:
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is structural representation of the present invention;
Number in the figure: 1-master's emery wheel, 2-supporting plate, 3-elastic metal sheet, 4-screw set, 5-ball-screw, 6-stepper motor, 7-line slideway, 8-piezoelectric ceramics, 9-power amplifier, 10-signal generator, 11-friction plate, 12-workpiece, 13-guide wheel.
The specific embodiment:
In order to deepen the understanding of the present invention, the invention will be further described below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the present invention, does not constitute the restriction to protection domain of the present invention.
As Fig. 2 show the present invention a kind of as described in the centerless grinding device, the centerless grinding of the workpiece of diameter below 2mm, comprise main emery wheel 1 and be used for the supporting plate 2 of supporting workpiece 12, the main emery wheel 1 other ultrasonic vibration plate that is provided with, supporting plate 2 places the below, gap between main emery wheel 1 and the ultrasonic vibration plate, ultrasonic vibration plate below is connected with screw set 4, be provided with ball-screw 5 in the screw set 4, one end of ball-screw 5 is connected with stepper motor 6, screw set 4 places on the line slideway 7, the ultrasonic vibration plate is made up of elastic metal sheet 3 and piezoelectric ceramics 8, elastic metal sheet 3 is provided with even numbered blocks piezoelectric ceramics 8, per two piezoelectric ceramics 8 separately are connected with a power amplifier 9, each first power amplifier 9 all links to each other with a signal generator 10, the end face of elastic metal sheet 3 is the friction plate 11 of 0.5mm, guarantees to maintain enough frictional force between oscillating plate end face and micro-workpiece.
A kind of application principle of centerless grinding device, the ultrasonic vibration plate is bonded on the elastic metal sheet 3 by piezoelectric ceramics 8 and constitutes, producing phase difference by signal generator 10 is two AC signals of ψ, and amplify after-applied on elastic metal sheet 3 by two power amplifiers, by crooked on the synthetic the elastic metal sheet 3 and vertically vibration of both direction, end face at elastic metal sheet 3 produces ultrasonic elliptical vibratory, add man-hour carrying out centerless grinding, by elastic metal sheet 3 and supporting plate 2 supporting workpieces 12, rotatablely moving by the control of the frictional force between workpiece 12 and the elastic metal sheet 3 of workpiece 12, workpiece 12 peripheral speeds are identical with the linear velocity of the elliptical vibration of elastic metal sheet 3 end face contact positions.
Because the grinding work piece diameter is smaller, in order effectively to carry out grinding experiment, the ultrasonic vibration plate can in height carry out coarse adjustment and fine setting, be rotated adjusting at horizontal plane around rotating shaft, by regulating the correct space geometry relation that can guarantee ultrasonic vibration plate end face, supporting plate, main emery wheel and workpiece.In grinding, main emery wheel at first moves before interfering with supporting plate towards ultrasonic vibration plate direction and halts, then, micro-feeding device drive ultrasonic vibration plate and workpiece with the speed of 0.1mm/min towards the feeding of main emery wheel direction, micro-feeding device drives workpiece along returning in the other direction after workpiece begins grinding to last till size to be processed, and micro-feeding device is made up of stepper motor, ball-screw, screw set.
The present invention is the effect that replaces directive wheel in traditional centerless grinder by the ultrasonic vibration plate, the ultrasonic vibration plate is bonded on the elastic metal sheet by piezoelectric ceramics and constitutes, two AC signals (surpassing 20kHz) that will have phase difference amplify after-applied on piezoelectric ceramics by power amplifier, by crooked on the synthetic elastic metal sheet and the vertically vibration of both direction, end face at oscillating plate produces ultrasonic elliptical vibratory, rotatablely moving by the control of the frictional force between workpiece and the metallic plate of workpiece, the workpiece peripheral speed is identical with the linear velocity of the elliptical vibration of metallic plate end face contact position.Because the present invention utilizes the ultrasonic elliptical vibratory plate to replace directive wheel and relevant attachment device thereof in the present centerless grinding device, structure is simplified, can process by the present invention for the fine workpiece below the diameter 2mm, and, the rotation error that this method can effectively avoid the deviation from circular from that caused by guide wheel and guide wheel main shaft to cause, improve the workpiece running accuracy, guaranteed grinding quality.
Claims (3)
1. centerless grinding device, described centerless grinding device comprises main emery wheel (1) and is used for the supporting plate (2) of supporting workpiece, it is characterized in that: the other ultrasonic vibration plate that is provided with of described main emery wheel (1), described supporting plate (2) places the below, gap between described main emery wheel (1) and the described ultrasonic vibration plate, described ultrasonic vibration plate below is connected with screw set (4), be provided with ball-screw (5) in the described screw set (4), one end of described ball-screw (5) is connected with stepper motor (6), described screw set (4) places on the line slideway (7), described ultrasonic vibration plate is made up of elastic metal sheet (3) and piezoelectric ceramics (8), described elastic metal sheet (3) is provided with even numbered blocks piezoelectric ceramics (8), per two described piezoelectric ceramics (8) separately are connected with a power amplifier (9), each described first power amplifier (9) all links to each other with a signal generator (10), and the end face of described elastic metal sheet (3) is consolidated with the friction plate that thickness is 0.5mm (11).
2. according to the described a kind of centerless grinding device of claim 1, it is characterized in that: the diameter of the workpiece of processing is below 2mm.
3. the application principle of a centerless grinding device, it is characterized in that: described ultrasonic vibration plate is bonded in elastic metal sheet (3) by described piezoelectric ceramics (8) and goes up formation, producing phase difference by described signal generator (10) is two AC signals of ψ, and amplify after-applied on elastic metal sheet (3) by two power amplifiers, go up crooked and the vertically vibration of both direction by synthetic described elastic metal sheet (3), end face at described elastic metal sheet (3) produces ultrasonic elliptical vibratory, add man-hour carrying out centerless grinding, by described elastic metal sheet (3) and described supporting plate (2) supporting workpiece, rotatablely moving by the control of the frictional force between workpiece and the described elastic metal sheet (3) of workpiece, the workpiece peripheral speed is identical with the linear velocity of the elliptical vibration of described elastic metal sheet (3) end face contact position.
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| CN2013101698251A CN103231287A (en) | 2013-05-10 | 2013-05-10 | Centreless grinding device and application principle thereof |
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| CN2013101698251A CN103231287A (en) | 2013-05-10 | 2013-05-10 | Centreless grinding device and application principle thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104440417A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single excitation ultrasonic elliptic vibration centerless grinding device |
| CN104440416A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single-excitation ultrasonic elliptical vibration centerless grinding device |
| CN104476337A (en) * | 2014-12-09 | 2015-04-01 | 苏州科技学院 | Single electric signal excitation ultrasonic elliptic vibration centerless grinding device |
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| JP2001259974A (en) * | 2000-03-21 | 2001-09-25 | Micron Seimitsu Kk | Centerless grinding method and device for columnar work |
| JP2005254418A (en) * | 2004-03-15 | 2005-09-22 | Yuha Go | Centerless grinding method and device for spherical work |
| JP2006062066A (en) * | 2004-08-30 | 2006-03-09 | Micron Seimitsu Kk | Centerless grinding device, shoe for centerless grinding device and centerless grinding method |
| JP2007105601A (en) * | 2005-10-12 | 2007-04-26 | Asahi Ems Co Ltd | Supporting device of ultrasonic deflection vibrating body |
| CN101071997A (en) * | 2007-04-05 | 2007-11-14 | 南京航空航天大学 | Square plate linear ultrasonic motor and electric exciting manner |
| CN101502971A (en) * | 2009-03-10 | 2009-08-12 | 北京航空航天大学 | High-frequency ultrasonic elliptical vibration cutting device |
| CN201762391U (en) * | 2010-07-23 | 2011-03-16 | 赵显华 | Floating type ultrasonic metal surface processing device |
| CN203236314U (en) * | 2013-05-10 | 2013-10-16 | 南通龙汇光电技术有限公司 | Centerless grinding device |
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2013
- 2013-05-10 CN CN2013101698251A patent/CN103231287A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259974A (en) * | 2000-03-21 | 2001-09-25 | Micron Seimitsu Kk | Centerless grinding method and device for columnar work |
| JP2005254418A (en) * | 2004-03-15 | 2005-09-22 | Yuha Go | Centerless grinding method and device for spherical work |
| JP2006062066A (en) * | 2004-08-30 | 2006-03-09 | Micron Seimitsu Kk | Centerless grinding device, shoe for centerless grinding device and centerless grinding method |
| JP2007105601A (en) * | 2005-10-12 | 2007-04-26 | Asahi Ems Co Ltd | Supporting device of ultrasonic deflection vibrating body |
| CN101071997A (en) * | 2007-04-05 | 2007-11-14 | 南京航空航天大学 | Square plate linear ultrasonic motor and electric exciting manner |
| CN101502971A (en) * | 2009-03-10 | 2009-08-12 | 北京航空航天大学 | High-frequency ultrasonic elliptical vibration cutting device |
| CN201762391U (en) * | 2010-07-23 | 2011-03-16 | 赵显华 | Floating type ultrasonic metal surface processing device |
| CN203236314U (en) * | 2013-05-10 | 2013-10-16 | 南通龙汇光电技术有限公司 | Centerless grinding device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104440417A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single excitation ultrasonic elliptic vibration centerless grinding device |
| CN104440416A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single-excitation ultrasonic elliptical vibration centerless grinding device |
| CN104476337A (en) * | 2014-12-09 | 2015-04-01 | 苏州科技学院 | Single electric signal excitation ultrasonic elliptic vibration centerless grinding device |
| CN104440417B (en) * | 2014-12-09 | 2017-01-18 | 常州机电职业技术学院 | Single excitation ultrasonic elliptic vibration centerless grinding device |
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Application publication date: 20130807 |