CN212265335U - Prism magneto-rheological polishing equipment - Google Patents
Prism magneto-rheological polishing equipment Download PDFInfo
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- CN212265335U CN212265335U CN202020814999.4U CN202020814999U CN212265335U CN 212265335 U CN212265335 U CN 212265335U CN 202020814999 U CN202020814999 U CN 202020814999U CN 212265335 U CN212265335 U CN 212265335U
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- fluid channel
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Abstract
The utility model relates to the technical field of optical part polishing equipment, in particular to prism magneto-rheological polishing equipment, which comprises an equipment body, wherein a lifting platform is arranged on the equipment body, and a polishing head is arranged below the lifting platform; a polishing groove is arranged below the lifting table, a clamp capable of clamping a workpiece is arranged in the polishing groove, and a permanent magnet is arranged in the clamp; a magnetorheological fluid channel is axially arranged in the polishing head, a plurality of groups of plane radial spiral coils are coaxially arranged on the outer side of the magnetorheological fluid channel, a sliding ring is arranged at the position of the polishing head extending into the lifting table, and an electric brush connected with the sliding ring in a sliding manner is arranged in the lifting table; the utility model provides the high required flexible polishing mould's when magnetic current becomes polishing area, and the permanent magnet in radial spiral coil in plane and the anchor clamps can form the even steady magnetic field that distributes between the two for the flexible polishing membrane that forms distributes evenly, helps improving polishing quality.
Description
Technical Field
The utility model relates to an optical parts polishing equipment technical field, concretely relates to prism magneto rheological polishing equipment.
Background
With the development of scientific technology, the requirements of modern optical systems on the surface shape precision, surface roughness and subsurface damage degree of optical parts are higher and higher, which continuously provides new challenges for optical manufacturing technology, and various advanced deterministic polishing technologies are emerging.
Currently, the more widely used polishing techniques include both computer controlled optical surface molding (CCOS) polishing and magnetorheological polishing. The computer-controlled optical surface forming (CCOS) polishing technology is a processing method for realizing effective material removal by means of positive pressure, a typical CCOS structure is formed by covering a thin metal plate with asphalt, the structure is also commonly called as a rigid tool, and the material removal amount of an optical part is accurately controlled by controlling parameters such as residence time and polishing pressure of each area through a computer, so that the CCOS polishing technology has high removal efficiency, but the removal function is unstable and the convergence efficiency is low. The magnetorheological polishing technology utilizes the rheological effect of the magnetorheological fluid in a gradient magnetic field to form the flexible polishing die to be in overall contact with a processing area, and the processing effect of near-zero subsurface damage can be obtained.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at overcoming the defect among the prior art, provide prism magnetic current becomes polishing equipment, and the area of contact of rubbing head and work piece is big for polishing efficiency can improve.
The utility model discloses a prism magnetic current becomes polishing equipment, organism, be equipped with the elevating platform on the organism, the elevating platform below is equipped with the rubbing head, be equipped with the first driving source that drives the rubbing head rotation in the elevating platform; a polishing groove is arranged below the lifting table, a clamp capable of clamping a workpiece is arranged in the polishing groove, a permanent magnet is arranged in the clamp, and a second driving source for driving the polishing groove to rotate is arranged in the machine body; the magnetorheological fluid device comprises a polishing head and is characterized in that a magnetorheological fluid channel is axially arranged in the polishing head, a plurality of groups of plane radial spiral coils are coaxially arranged on the outer side of the magnetorheological fluid channel, a sliding ring is arranged at the position, extending into the lifting table, of the polishing head, the two sliding rings are respectively connected to two ends of the plane radial spiral coils, and an electric brush in sliding connection with the sliding ring is arranged in the lifting table.
Furthermore, the electromagnetic polarity direction of each group of the plane radial spiral coils after being electrified is the same, the radius and the number of turns of each group of the plane radial spiral coils are equal, and all the plane radial spiral coils are connected in series and are arranged in a stacked mode along the axial direction of the magnetorheological fluid channel.
Further, the permanent magnet is in a shape of a circular sheet, the radius of the permanent magnet is the same as that of the planar radial spiral coil, and the polarity of one end of the permanent magnet, which is opposite to the polishing head, is opposite to the polarity generated after the planar radial spiral coil is electrified.
Further, the polishing head is made of a magnetic conductive material, a magnetic shielding layer made of a non-magnetic conductive material is arranged on the inner wall of the magnetorheological fluid channel, a plurality of annular ribs are arranged between the magnetic shielding layer and the inner wall of the magnetorheological fluid channel, and a plurality of air gaps are formed in the area between the magnetic shielding layer and the inner wall of the magnetorheological fluid channel through the annular ribs.
Furthermore, the side wall of the polishing groove is provided with an overflow hole, an overflow groove is fixedly arranged on the outer side of the overflow hole in the machine body, the overflow groove is annular, and the overflow groove is communicated with a magnetorheological fluid recovery pipeline.
The utility model has the advantages that: the utility model discloses a prism magnetic current becomes polishing equipment, the size of a dimension of magnetic field source is unrestricted, is favorable to improving the area of required flexible polishing mould when magnetic current becomes polishing, and the permanent magnet in radial spiral coil in plane and the anchor clamps can form the even steady magnetic field that distributes between the two for the flexible polishing membrane that forms distributes evenly, helps improving polishing quality.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the polishing head of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic structural view of a polishing tank of the present invention;
fig. 5 is a schematic diagram of the connection of the planar radial spiral coil according to the present invention.
Description of reference numerals: the magnetorheological fluid polishing device comprises a machine body 100, a lifting table 200, a polishing head 300, a polishing groove 400, a clamp 401, a permanent magnet 402, a second driving source 101, a magnetorheological fluid channel 301, a planar radial spiral coil 302, a slip ring 303, a brush 304, a magnetic shielding layer 305, an annular rib 306, an air gap 307, an overflow hole 403 and an overflow groove 404.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 5, the prism magnetorheological polishing apparatus in this embodiment includes a machine body 100, wherein a lifting table 200 is disposed on the machine body 100, a polishing head 300 is disposed below the lifting table 200, and a first driving source for driving the polishing head 300 to rotate is disposed in the lifting table 200; a polishing groove 400 is rotatably arranged below the lifting table 200, a clamp 401 capable of clamping a workpiece is arranged in the polishing groove 400, a permanent magnet 402 is arranged in the clamp 401, and a second driving source 101 for driving the polishing groove 400 to rotate is arranged in the machine body 100; the magnetorheological fluid channel 301 is axially arranged in the polishing head 300, a plurality of groups of planar radial spiral coils 302 are coaxially arranged on the outer side of the magnetorheological fluid channel 301, and the polishing head 300 is provided with two slip rings 303 at positions extending into the lifting table 200, the two slip rings 303 are respectively connected to two ends of the planar radial spiral coils 302 and used for respectively connecting the anode and the cathode of a power supply, and an electric brush 304 connected with the slip rings 303 in a sliding manner is arranged in the lifting table 200.
In the practical implementation process, a workpiece is placed on a clamp 401 with a permanent magnet 402, a certain gap is required to be reserved between the lower surface of a polishing head 300 and the upper surface of the workpiece, the gap distance is generally between 0 and 5mm, magnetorheological fluid from a magnetorheological fluid channel 301 fills the gap, and a solid-like body is formed under the combined action of a plane radial spiral coil 302 and the permanent magnet 402 after being electrified, namely a magnetorheological polishing die, and the magnetorheological polishing die can realize tangential polishing on the surface of the rotating workpiece; the size of the magnetorheological polishing die mainly depends on the radiuses of the plane radial spiral coil 302 and the permanent magnet 402, so that large-area polishing of the prism plane can be realized, the magnetic field generated by the plane radial spiral coil 302 is uniform, the formed polishing die is better in consistency and better in polishing effect; the polishing head 300 is driven by the first driving source to rotate, the polishing trough 400 is driven by the second driving source 101 to rotate relatively at a low speed, and it can be understood that the rotation of the polishing trough 400 can drive the clamp 401 and the workpiece to rotate together, thereby improving the processing efficiency.
In this embodiment, all the planar radial spiral coils 302 are connected in series, and the directions of the electromagnetic polarities of the coils after being energized are the same, since the electromagnetic polarities of the coils depend on the direction of current, the planar radial spiral coils 302 in this embodiment may be specifically arranged in such a manner that all the coils are wound in the same direction, the inner terminals of the upper group of planar radial spiral coils 302 are connected to the outer terminals of the lower group, and the remaining two terminals of the uppermost group and the lowermost group are connected to the slip ring 303 for energization, so that the directions of current in all the planar radial spiral coils 302 are the same; the radius and the number of turns of each group of planar radial spiral coils 302 are equal, and all the planar radial spiral coils 302 are stacked in the axial direction of the magnetorheological fluid channel 301.
In this embodiment, the permanent magnet 402 is in a circular plate shape, the radius of the permanent magnet 402 is the same as the radius of the planar radial spiral coil 302, and the polarity of one end of the permanent magnet 402 opposite to the polishing head 300 is opposite to the polarity generated after the planar radial spiral coil 302 is energized.
In this embodiment, the polishing head 300 is made of a magnetic conductive material, the inner wall of the magnetorheological fluid channel 301 is provided with a magnetic shielding layer 305, the magnetic shielding layer 305 is made of a non-magnetic conductive material, a plurality of annular ribs 306 are arranged between the magnetic shielding layer 305 and the inner wall of the magnetorheological fluid channel 301, the plurality of annular ribs 306 separate a plurality of air gaps 307 from the region between the magnetic shielding layer 305 and the inner wall of the magnetorheological fluid channel 301, and the arranged magnetic shielding layer 305 and the air gaps 307 are used for preventing the magnetorheological fluid in the magnetorheological fluid channel 301 from being hardened and ensuring the magnetorheological fluid to flow normally.
In this embodiment, the sidewall of the polishing tank 400 is provided with an overflow hole 403, an overflow tank 404 is fixedly disposed on the outer side of the overflow hole 403 in the machine body 100, the overflow tank 404 is annular, and the overflow tank 404 is communicated with a magnetorheological fluid recovery pipeline.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (5)
1. Prism magnetic current becomes polishing equipment, including the organism, be equipped with the elevating platform on the organism, its characterized in that: a polishing head is arranged below the lifting platform, and a first driving source for driving the polishing head to rotate is arranged in the lifting platform; a polishing groove is arranged below the lifting table, a clamp capable of clamping a workpiece is arranged in the polishing groove, a permanent magnet is arranged in the clamp, and a second driving source for driving the polishing groove to rotate is arranged in the machine body; the magnetorheological fluid device comprises a polishing head and is characterized in that a magnetorheological fluid channel is axially arranged in the polishing head, a plurality of groups of plane radial spiral coils are coaxially arranged on the outer side of the magnetorheological fluid channel, a sliding ring is arranged at the position, extending into the lifting table, of the polishing head, the two sliding rings are respectively connected to two ends of the plane radial spiral coils, and an electric brush in sliding connection with the sliding ring is arranged in the lifting table.
2. The prism magnetorheological finishing device of claim 1, wherein: the electromagnetic polarity direction of each group of the plane radial spiral coils after being electrified is the same, the radius and the number of turns of each group of the plane radial spiral coils are equal, and all the plane radial spiral coils are connected in series and are arranged in a stacked mode along the axial direction of the magnetorheological fluid channel.
3. The prism magnetorheological finishing device of claim 2, wherein: the permanent magnet is in a disc shape, the radius of the permanent magnet is the same as that of the plane radial spiral coil, and the polarity of one end, opposite to the polishing head, of the permanent magnet is opposite to that generated after the plane radial spiral coil is electrified.
4. The prism magnetorheological finishing device of claim 1, wherein: the polishing head is made of a magnetic conductive material, a magnetic shielding layer made of a non-magnetic conductive material is arranged on the inner wall of the magnetorheological fluid channel, a plurality of annular ribs are arranged between the magnetic shielding layer and the inner wall of the magnetorheological fluid channel, and a plurality of air gaps are formed in the area between the magnetic shielding layer and the inner wall of the magnetorheological fluid channel through the annular ribs.
5. The prism magnetorheological finishing device of claim 1, wherein: the lateral wall of the polishing groove is provided with an overflow hole, an overflow groove is fixedly arranged on the outer side of the overflow hole in the machine body, the overflow groove is annular, and the overflow groove is communicated with a magnetorheological fluid recovery pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020814999.4U CN212265335U (en) | 2020-05-16 | 2020-05-16 | Prism magneto-rheological polishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020814999.4U CN212265335U (en) | 2020-05-16 | 2020-05-16 | Prism magneto-rheological polishing equipment |
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| Publication Number | Publication Date |
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| CN212265335U true CN212265335U (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020814999.4U Active CN212265335U (en) | 2020-05-16 | 2020-05-16 | Prism magneto-rheological polishing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775767A (en) * | 2021-01-29 | 2021-05-11 | 上海理工大学 | Ultrasonic vibration assisted magnetic composite fluid polishing device |
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2020
- 2020-05-16 CN CN202020814999.4U patent/CN212265335U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775767A (en) * | 2021-01-29 | 2021-05-11 | 上海理工大学 | Ultrasonic vibration assisted magnetic composite fluid polishing device |
| CN112775767B (en) * | 2021-01-29 | 2022-09-23 | 上海理工大学 | Ultrasonic vibration assisted magnetic composite fluid polishing device |
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