CN102513927B - Gap self-adaptive polishing grinding head - Google Patents
Gap self-adaptive polishing grinding head Download PDFInfo
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- CN102513927B CN102513927B CN201110452719.5A CN201110452719A CN102513927B CN 102513927 B CN102513927 B CN 102513927B CN 201110452719 A CN201110452719 A CN 201110452719A CN 102513927 B CN102513927 B CN 102513927B
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Abstract
The invention discloses a gap self-adaptive polishing grinding head, which belongs to a polishing grinding head involved in the optics cold processing field, and aims at solving the problem when the present grinding head is used for polishing, the polishing liquid is non-uniform and a gap between the grinding head and a work-piece is overlarge. The gap self-adaptive polishing grinding head comprises a connection element, a gasket ring, a flexible helical pipe, a guide column, a spring, a retainer ring, a grinding head seat and a grinding head body. The gap self-adaptive polishing grinding head can be connected with a machine tool, the polishing liquid flows into the grinding head through an inner hole of a machine tool main shaft and is continuously supplied to the grinding head body through the flexible helical pipe. When in polishing, the grinding head body is firstly used for pressing the surface of the work-piece, so the spring is slightly compressed, when the surface of the work-piece is fluctuated or error appears in the installation and positioning, and the grinding head body can move from top to bottom along the guide column so as to automatically compensate the gap and to guarantee the polishing quality.
Description
Technical field
The present invention relates to optics cold processing technique field, relate in particular to a kind of gap self adaptation grinding head for polishing.
Background technology
Glossing is last ring in optics cold working.In glossing, conventionally, by polished die and surface of the work laminating, do high speed relative motion simultaneously, produce very large tangential force, the minute protrusions of glass surface is cut, thereby forms gradually smooth surface.
In the processing of traditional optics, use solid bistrique to carry out polishing, when its shortcoming is polishing, polishing fluid is inhomogeneous and be not easy to upgrade below bistrique, and while even there is fast polishing, part can not get the situation of polishing fluid.Patent ZL200410011215.X has proposed to utilize the mode of hollow bistrique, center hydrojet to solve this problem, polishing fluid is distributed more evenly below bistrique and polishing fluid continuous updating below bistrique.It is rigidity that but the weak point of this scheme is whole bistrique, adding man-hour, bistrique and workpiece should keep the gap of several microns, because this gap is very little, in fact due to lathe, debug or the error of workpiece itself, can make to occur between bistrique and workpiece the situation that excesssive gap or rigidity contact, thereby cause polishing effect variation.
Summary of the invention
The technical problem of excesssive gap between inhomogeneous and bistrique and workpiece of polishing fluid, the invention provides a kind of gap self adaptation grinding head for polishing when solving existing grinding head polishing.
The technical scheme that technical solution problem of the present invention is taked is as follows:
A kind of gap self adaptation grinding head for polishing, comprises connector, flexible screw pipe, lead, spring, head holder, back-up ring and grinding head body; Connector is provided with the through hole matching with lead, and connector is connected with one end interference of lead; Spring housing is on lead, and its one end is fixed on the lower surface of connector, and the other end is fixed on the upper surface of head holder; Back-up ring is fixed by screws in the other end of lead, and head holder is placed on back-up ring, and grinding head body is fixed on head holder; Upper end and the connector of flexible screw pipe are tightly connected, and lower end and head holder are tightly connected; Head holder has through hole in the position being connected with flexible screw pipe, has the through hole communicating with the through hole of head holder in grinding head body.
Above-mentioned flexible screw pipe integral disc curl still can continue to provide polishing fluid to meet bistrique in the time adjusting up and down.
Above-mentioned lead one end is fixed by interference connected mode and connector, and the other end blocks head holder by screw and back-up ring, and it can not be deviate under nature; Between the upper plate flange hole of head holder and lead, have a minim gap, can in guiding, easily slide, lower central has a boss to be connected with grinding head body.
Above-mentioned connector can be all kinds of taper shanks that are connected with machine tool chief axis, can be also the mouthpiece being connected with other devices, and on the flange of connector with the through hole matching with lead.
The number of above-mentioned lead is 3～6; Described spring is stage clip; The material of described grinding head body can be metal, pitch, polytetrafluoroethylene (PTFE) or other macromolecular materials, and grinding head body surface has groove.
Work in-process, the polishing fluid that the through hole of grinding head center provides can make bistrique below be full of liquid, in the time of bistrique and surface of the work generation relative motion, will produce hydrodynamic phenomenon, by bistrique certain height that upwards suspends.Now, hydrodynamic pressure and spring force balance each other.In the time of polishing diverse location, due to lathe, debug and the Accuracy of workpiece itself, can bring the error of tens microns, but for spring, the displacement range power of tens microns almost remains unchanged, so bistrique can remain on the distance of several microns of workpiece tops always, thereby has compensated the error that mechanical precision brings, keep the gap between bistrique and surface of the work, finally also guaranteed quality of finish.
The invention has the beneficial effects as follows: this bistrique not only can continue to provide polishing fluid from grinding head center hole in polishing process, and can auto-compensation due to lathe, debug or error that workpiece itself brings, gap between bistrique and workpiece is consistent in polishing process, thereby has guaranteed the quality of polishing.
Accompanying drawing explanation
Fig. 1 is the structural representation of gap of the present invention self adaptation grinding head for polishing.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figure 1, gap of the present invention self adaptation grinding head for polishing comprises connector 1, flexible screw pipe 3, lead 4, spring 5, head holder 7, back-up ring 8 and grinding head body 9.Wherein, the material of connector 1, lead 4 and head holder 7 is duralumin, hard alumin ium alloy.Above connector 1, have screwed hole and be convenient to be connected with machine tool chief axis, be placed with O RunddichtringO 2 at Gewindefreistiche place and do not reveal to guarantee polishing fluid.The number of lead 4 is 3, and on circumference, with equidistant 120 ° of placements, it is that interference is connected with the fixed form of connector 1.Spring 5 is stage clip, is placed on the outside of lead 4.Screw 6 is pressed in back-up ring 8 on lead 4, and back-up ring 8 can block head holder 7 and be unlikely to deviate under nature.Flexible screw pipe 3 is plastic flexible pipe, and the centre bore of one end and connector 1 glueds joint and seals, and the centre bore of the other end and head holder 7 glueds joint and seals, and telophragma curl can continue to provide polishing fluid like this in the time of bistrique up-down adjustment.The material of grinding head body 9 is pitch, and the porose polishing fluid that provides in center.
In use, first bistrique of the present invention is connected with machine tool chief axis by connector 1, then control that bistrique slowly declines until bistrique and Work-sheet pressing Compress Spring make it have certain precompression, then open polishing fluid feed system controller bed motion, in the time that surface of the work has fluctuating or installation to be positioned with error, bistrique can move up and down with automatic compensation gap along lead 4, thereby can guarantee quality of finish.
Claims (6)
1. a gap self adaptation grinding head for polishing, it is characterized in that, this bistrique comprises connector (1), flexible screw pipe (3), lead (4), spring (5), head holder (7), back-up ring (8) and grinding head body (9); Connector (1) is provided with the through hole matching with lead (4), and connector (1) is connected with one end interference of lead (4); It is upper that spring (5) is enclosed within lead (4), and its one end is fixed on the lower surface of connector (1), and the other end is fixed on the upper surface of head holder (7); Back-up ring (8) is fixed on the other end of lead (4) by screw (6), it is upper that head holder (7) is placed in back-up ring (8), and grinding head body (9) is fixed on head holder (7); The upper end of flexible screw pipe (3) and connector (1) are tightly connected, and lower end and head holder (7) are tightly connected; Head holder (7) has through hole in the position being connected with flexible screw pipe (3), has the through hole communicating with the through hole of head holder (7) in grinding head body (9).
2. a kind of gap as claimed in claim 1 self adaptation grinding head for polishing, is characterized in that, the top of described connector (1) has the internal thread hole that is connected use with machine tool chief axis, is placed with O RunddichtringO (2) at Gewindefreistiche place.
3. a kind of gap as claimed in claim 1 self adaptation grinding head for polishing, is characterized in that, the number of described lead (4) is 3～6.
4. a kind of gap as claimed in claim 1 self adaptation grinding head for polishing, is characterized in that, described spring (5) is stage clip.
5. a kind of gap as claimed in claim 1 self adaptation grinding head for polishing, is characterized in that, the material of described grinding head body (9) is metal or macromolecular material.
6. a kind of gap as claimed in claim 5 self adaptation grinding head for polishing, is characterized in that, described macromolecular material is pitch or polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110452719.5A CN102513927B (en) | 2011-12-30 | 2011-12-30 | Gap self-adaptive polishing grinding head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110452719.5A CN102513927B (en) | 2011-12-30 | 2011-12-30 | Gap self-adaptive polishing grinding head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102513927A CN102513927A (en) | 2012-06-27 |
| CN102513927B true CN102513927B (en) | 2014-06-18 |
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| CN201110452719.5A Expired - Fee Related CN102513927B (en) | 2011-12-30 | 2011-12-30 | Gap self-adaptive polishing grinding head |
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| CN103072077B (en) * | 2013-01-29 | 2016-06-15 | 中国科学院长春光学精密机械与物理研究所 | A kind of double-flexibility self adaptation grinding head for polishing |
| CN103447941A (en) * | 2013-08-21 | 2013-12-18 | 重庆江增船舶重工有限公司 | Eccentric device for plane grinding |
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| CN102513927A (en) | 2012-06-27 |
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