CN214771339U - Clamp for positioning workpiece - Google Patents
Clamp for positioning workpiece Download PDFInfo
- Publication number
- CN214771339U CN214771339U CN202121185062.6U CN202121185062U CN214771339U CN 214771339 U CN214771339 U CN 214771339U CN 202121185062 U CN202121185062 U CN 202121185062U CN 214771339 U CN214771339 U CN 214771339U
- Authority
- CN
- China
- Prior art keywords
- positioning
- area
- workpiece
- gluing
- plane
- 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.)
- Active
Links
Images
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model belongs to the technical field of optics, a anchor clamps for work piece location is disclosed for the anchor clamps of work piece location include: the gluing device comprises a gluing area, an isolation area and a reference positioning area, wherein the gluing area and the reference positioning area are separated by the isolation area, a reference plane for positioning is arranged on the reference positioning area, and a groove for containing hot melt adhesive is arranged in the gluing area; the isolation area is provided with an isolation groove for accommodating the hot melt adhesive overflowing from the gluing area; the matching mode of the gluing plane to be arranged on the workpiece and the reference plane on the reference positioning area is surface contact, and the gluing area and the workpiece are provided with the gluing plane to be glued and connected through hot melt adhesive. The reference plane is tightly attached to the plane to be glued of the workpiece, so that clamping unequal thickness errors caused by uneven thickness of the adhesive layer during gluing are prevented, and the isolation region prevents the hot melt adhesive from polluting the reference positioning region; because the glue layer is thicker, the time required by curing is long, and the deformation of the clamp is effectively prevented from being transmitted to the workpiece.
Description
Technical Field
The utility model belongs to the technical field of optics, a work piece positioning fixture is related to.
Background
The most widely used optical processing materials are glass materials, and the materials have the characteristics of brittleness and easy breakage. When the glass material is machined, the glass is easy to break by adopting a three-jaw and self-centering chuck mechanical hard clamping mode, and the internal stress deformation of the glass material is easy to cause during clamping.
The glass clamping device is characterized in that parallel metal plates are widely adopted for protection in the prior art aiming at the problem that glass materials are brittle and easy to break, glass is glued on the parallel metal plates, and the metal plates at the bottom are clamped in the clamping process, so that the workpiece is clamped. When clamping, the deformation of the metal plate caused by the clamping force is transmitted to the glass workpiece.
The traditional gluing mode is that hot melt adhesive is coated between a reference surface and a workpiece, and after the workpiece is glued, the reference surface recovers deformation after being cooled, so that stress deformation can be brought to the inside of the workpiece; the step of coating glue on the datum plane is actually to cover the datum plane by a molten glue layer, and when a workpiece is placed on the datum plane for positioning, the datum plane cannot be in direct contact with the workpiece, but a layer of hot melt glue layer is filled; the glue layer is difficult to be very uniform, even if the micrometer-scale nonuniformity can cause the positioning reference of the workpiece to change, the hot melt adhesive is cooled quickly in the gluing process, and the thicker glue layer becomes more viscous in the cooling process, so that the thinner glue layer in the prior art is more favorable for improving the uniformity of the glue layer. The thin glue layer is easy to improve the uniformity of the glue layer, and is more beneficial to enabling the reference surface of the workpiece to be parallel to the parallel metal plate, but the cost is the sacrifice of partial gluing force.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved is that: the non-uniform thickness of the glue layer can cause the workpiece reference surface to be not perpendicular to the processing spindle; the clamping force causes the stress generated inside the workpiece to cause deformation.
A jig for positioning a workpiece on which a plane to be glued is provided, comprising: a gluing area, an isolation area and a reference positioning area; the gluing area and the reference positioning area are separated by the isolation area, a reference plane for positioning is arranged on the reference positioning area, and the gluing area is provided with a groove for containing hot melt adhesive; the isolation area is provided with an isolation groove for accommodating the hot melt adhesive overflowing from the gluing area; the matching mode of the plane to be glued arranged on the workpiece and the reference plane on the reference positioning area is surface contact, and the gluing area and the plane to be glued arranged on the workpiece are glued and connected through hot melt glue; the horizontal plane of the gluing area is at least 0.5mm higher than that of the isolation area, and the reference plane of the reference positioning area is 0.3-0.5 mm higher than that of the gluing area.
When the fixture for positioning the workpiece is used, S1, the fixture is installed and fixed on a machine tool workbench, a datum plane of a datum positioning area is leveled by a knife process, and the leveled datum plane is perpendicular to a main shaft of a machine tool; s2, heating a clamp for positioning the workpiece, coating the heated and melted hot melt adhesive in a groove of the gluing area, placing the heated workpiece to be positioned on the clamp for positioning the workpiece, and applying pressure to the workpiece to be positioned so that a reference plane arranged on the reference positioning area is in contact with a plane to be glued on the workpiece to be positioned; the hot melt adhesive melted in the gluing area is adhered to a workpiece to be positioned, and the hot melt adhesive with excessive waste heat flows into an isolation groove of an isolation area during positioning, and after cooling, the workpiece can be clamped; s3, heating the gluing area after machining, only taking down the workpiece, and still fixing the clamp on the machine tool workbench; and if repeated positioning is needed, the workpiece can be clamped by repeating the step S2.
Because the hot melt adhesive is only coated on the gluing area in the clamping process, the reference plane of the reference positioning area can be tightly attached to the to-be-glued plane of the to-be-positioned workpiece, the clamping unequal thickness error caused by uneven thickness of the adhesive layer in gluing can be effectively prevented, and due to the arrangement of the isolation area, the hot melt adhesive can be effectively prevented from polluting the reference plane of the reference positioning area in the clamping process. The plane to be glued of the workpiece clamped by the technical scheme is perpendicular to the main shaft of the machine tool, so that the positioning precision of the workpiece in the Z direction (the direction of the main shaft) is greatly improved. In addition, the temperature of the clamp rises during clamping, so that the reference plane generates micro expansion along the Z direction, and because the reference plane of the reference positioning area of the clamp is higher than the horizontal plane of the gluing area, the deformation of the reference positioning area in the Z direction is larger than that of the gluing area after the clamp is heated; the datum plane is contacted with the workpiece during gluing, after cooling, the datum plane contracts and recovers the initial form, and the datum plane is separated from the workpiece; the glue layer between the gluing area and the workpiece is slowly solidified in the gradual cooling process, and the time required by solidification is long due to the fact that the glue layer is thick, so that the clamp is effectively prevented from being deformed and being transmitted to the workpiece. Traditional veneer gluing mode glue film back more the glue film homogeneity is difficult control more, and this technical scheme has the reference plane location through the benchmark locating area, has both solved the work piece reference surface and the processing main shaft out of plumb problem that the glue film is inhomogeneous to result in through increasing veneer area glue film thickness, has still solved the problem that hot melt veneer mode anchor clamps are heated and are deformed and lead to work piece stress. The workpiece can be clamped by repeating the step S2 when the workpiece needs to be repeatedly clamped, the resetting precision of the Z axis is high because the positioning reference surfaces are all the reference planes of the reference positioning area when the workpiece needs to be repeatedly clamped, the Z coordinate of the reference plane can be used as a reference zero point under the condition that the thickness of the workpiece needs to be accurately controlled, and the center thickness of the workpiece can be obtained by measuring the Z coordinate of the end surface center of the workpiece and the coordinate difference between the Z coordinate of the reference plane and the Z coordinate of the reference plane. The clamp of this scheme is fixed clamping earlier on the lathe revolving stage when using, and the fixed work piece of veneer in the anchor clamps after the deformation goes up the gluing district to the anchor clamps are still fixed on the lathe revolving stage after processing is accomplished, therefore the clamping power of anchor clamps can not transmit for the work piece.
The resetting and positioning precision in the X direction and the Y direction is further improved in the clamping process through the matching mode of the positioning outer cone and the auxiliary positioning block. The mode can effectively reduce the eccentric difference caused by the decentration and the inclination of the optical axis of the workpiece for the optical element of the rotationally symmetrical workpiece.
Drawings
FIG. 1 is a schematic top view of an example fixture 1 for positioning a workpiece;
FIG. 2 is a schematic cross-sectional view of an example fixture 1 for positioning a workpiece;
FIG. 3 is a schematic cross-sectional view of a fixture configured with a heating circuit for positioning a workpiece;
FIG. 4 is a schematic top view of a fixture configured with gas vents for positioning a workpiece;
FIG. 5 is a schematic cross-sectional view of a fixture for positioning a workpiece, equipped with a hot melt adhesive container, gluing the workpiece to be positioned;
FIG. 6 is a schematic top view of an example fixture 2 for positioning a workpiece;
FIG. 7 is a schematic cross-sectional view of an example 2 of a jig for positioning a workpiece gluing the workpiece to be positioned;
FIG. 8 is a schematic cross-sectional view of a fixture configured with an inner cone locating surface for locating a workpiece;
FIG. 9 is a schematic cross-sectional view of an auxiliary positioning block;
FIG. 10 is a schematic view of the assembly of the inner cone positioning surface with the auxiliary positioning block;
FIG. 11 is a schematic view of a workpiece and a positioning outer cone glue;
in the figure: 1. the device comprises an inner gluing area, an inner separation groove, a reference positioning ring, an outer separation groove, an outer gluing area, a heating circuit, a gas guide hole, a hot melt adhesive, a workpiece to be positioned, an outer positioning cone, a positioning flange face 11, an inner cone positioning face 12, an auxiliary positioning block 13, an auxiliary positioning block 14, a locking device 15, a hot melt adhesive container 16 and a hot melt adhesive conduit 5.
Detailed Description
Example one
As shown in fig. 1 and 2, a workpiece 9 to be positioned is provided with a plane to be glued, which is a reference plane of the workpiece to be positioned; the jig for positioning a workpiece includes: the gluing device comprises a gluing area, an isolation area and a reference positioning area, wherein the gluing area and the reference positioning area are separated by the isolation area, a reference plane for positioning is arranged on the reference positioning area, and a groove for containing hot melt adhesive is arranged in the gluing area; the isolation area is provided with an isolation groove for accommodating the hot melt adhesive overflowing from the gluing area; the matching mode of the plane to be glued arranged on the workpiece and the reference plane on the reference positioning area is surface contact, and the gluing area and the plane to be glued arranged on the workpiece are glued and connected through hot melt adhesive 8; the gluing area is an inner gluing area 1, the isolation area is an inner isolation groove 2, and the reference positioning area is a reference positioning ring 3; the end face of the reference positioning ring is an annular reference plane, the inner gluing area is arranged in the annular reference plane, and the inner gluing area is inwards sunken to form a groove for containing hot melt adhesive; the inner isolation groove is arranged between the reference positioning ring and the inner gluing area and is inwards sunken to form an annular groove.
The optimization scheme based on the scheme is as follows: a heating circuit is configured in the fixture, as shown in fig. 3, which is a schematic view of a cross section of the fixture for positioning a workpiece, after the heating circuit 6 is powered on, a proper amount of solid hot melt adhesive particles are placed in the gluing area, the workpiece to be glued is pressed on the reference positioning area after the solid hot melt adhesive particles are fully melted, the hot melt adhesive is glued with the bottom of the workpiece, and redundant glue flows into the inner isolation groove, so that the hot melt adhesive is prevented from polluting the reference positioning area. And (5) disconnecting the heating circuit, and gluing the workpiece on the clamp after cooling. The mode effectively improves the clamping efficiency, the hot melt adhesive can be melted in a few seconds after the heating circuit is electrified, and the workpiece can be fixed on the clamp after being glued and cooled. The reference positioning area of the clamp is perpendicular to the main shaft of the machine tool, and the bottom of the workpiece and the reference positioning area are not provided with the hot melt adhesive layer, so that the problem of inclination of the positioning surface of the workpiece caused by uneven thickness of the adhesive layer is effectively solved, and higher positioning precision can be obtained when the upper end surface of the workpiece is machined. For example, when the parallelism of the upper end surface and the lower end surface of a workpiece is processed, one end surface is glued randomly by using the clamp, the other end surface plane is processed, after the other end surface plane is processed, the processed end surface plane is pressed in the reference positioning area, and after the hot melt adhesive is glued and fixed, the other end surface is processed, so that the errors of the parallelism and the verticality can be effectively reduced.
One optimization scheme is as shown in fig. 4, an air guide hole 7 is further arranged in the fixture for positioning the workpiece, the air guide hole is used for balancing air pressure of the isolation area and the environment, one end of the air guide hole is arranged in the isolation area, and the other end of the air guide hole is connected with the outside air. Without such air vents, closed spaces may be formed in the insulation groove during gluing, which is not conducive to the flow of the hot melt adhesive. When the workpiece is glued, the air in the heated isolation area of the workpiece is thin, the air pressure in the isolation area can be lower than the air pressure in the external environment to cause negative pressure easily after cooling, deformation is easily generated in the workpiece when the high-precision workpiece is processed, for example, when an optical aspheric surface or a spherical surface is processed, the negative pressure easily generates stress in the workpiece, and after the processing is finished, the stress of the workpiece taken down from the clamp is recovered to cause the processed surface shape to exceed the tolerance. The negative pressure problem in the isolation area can be effectively solved by arranging the air guide hole.
In another preferred embodiment, as shown in fig. 5, a hot melt adhesive container 15 and a hot melt adhesive conduit 16 are provided, one end of the hot melt adhesive conduit being in communication with the hot melt adhesive container and the other end being in communication with the gluing zone. Set up the hot melt adhesive container, after heating circuit circular telegram, hot melt adhesive melts and flows into the veneer through the hot melt adhesive pipe in the hot melt adhesive container, and the hot melt adhesive in veneer district melts after the processing is accomplished heating circuit circular telegram, and accessible hot melt adhesive pipe retrieves the hot melt adhesive to the hot melt adhesive container. The hot melt adhesive container may be configured as a metal syringe.
Example two
A fixture for positioning a workpiece based on the first embodiment is further provided with an outer isolation groove 4, an outer gluing area 5; the outer gluing area is arranged outside the annular reference plane and is inwards sunken to form a groove for containing hot melt adhesive; the outer isolation groove is arranged between the reference positioning ring and the outer gluing area and is inwards sunken to form an annular groove.
When the clamp is used, as shown in fig. 7, gluing can be completed by using an inner gluing area for a workpiece with a smaller caliber; but for large-caliber workpieces, the gluing can be completed by using the outer gluing area; for a workpiece with a large caliber and needing large gluing force, the inner gluing area and the outer gluing area can jointly finish gluing and fixing.
EXAMPLE III
A fixture for positioning a workpiece is further provided with a positioning outer cone 10, a positioning flange surface 11, an auxiliary positioning block 13, an inner cone positioning surface 12 and a locking device 14, as shown in FIGS. 8 and 9; the positioning outer cone is arranged at the bottom of the clamp for positioning the workpiece, and the central axis of the positioning outer cone is perpendicular to the reference plane of the reference positioning area; the positioning flange surface is positioned at the bottom of the clamp for positioning the workpiece, and is vertical to the central axis of the positioning outer cone; an inner cone positioning surface matched with the positioning outer cone is arranged on the auxiliary positioning block, and the end surface of the auxiliary positioning block is vertical to the central axis of the inner cone positioning surface; after the positioning outer cone is matched with the auxiliary positioning block, as shown in fig. 10, the inner cone positioning surface is tangent to the positioning outer cone, and the positioning flange surface is tangent to the end surface of the auxiliary positioning block; the locking device is arranged on the auxiliary positioning block and used for locking and positioning the outer cone and the auxiliary positioning block.
The use steps of the fixture during positioning are as follows: s1, installing the clamp for positioning the workpiece on a machine tool workbench, and locking a positioning outer cone and an auxiliary positioning block by a locking device after the positioning outer cone is matched with the auxiliary positioning block; leveling the datum plane of the datum positioning area by using a smooth cutter process, wherein the leveled datum plane is vertical to a main shaft of the machine tool; s2, coating the heated and melted hot melt adhesive in a groove of the gluing area, placing the heated workpiece to be positioned on a clamp for positioning the workpiece, and applying pressure to the workpiece to be positioned so that a reference plane arranged on the reference positioning area is in contact with a plane to be glued on the workpiece to be positioned in a fitting manner; the hot melt adhesive melted in the gluing area is adhered to the workpiece to be positioned, redundant hot melt adhesive flows into the isolation groove of the isolation area, and after cooling, a plane to be glued arranged on the workpiece to be positioned is fixedly connected with the gluing area through the hot melt adhesive; s3, after the machining is finished, unlocking the positioning outer cone and the auxiliary positioning block by loosening the locking device, and taking down the workpiece and the positioning outer cone glue body shown in the figure 11; if repeated positioning is needed, after the workpiece and the positioning outer cone gluing body are matched with the auxiliary positioning block, the locking device locks the positioning outer cone and the auxiliary positioning block, and then the workpiece can be reset and clamped. The positioning outer cone 10, the positioning flange face 11, the auxiliary positioning block 13 and the inner cone positioning face 12 are matched with each other, so that high-precision repeated positioning precision can be realized, the positioning coordinate of the Z axis can be restored, the coordinate of the X, Y axis can be restored, and self-centering during restoration is realized.
For example, the method for processing the optical element by using the fixture is as follows:
according to the processing method of the optical element of the using mode of the clamp, the first end face of the optical element is a reference plane, the second end face of the optical element is one of a plane, a convex face and a concave face, any one end face of an optical element blank is firstly clamped in a reference positioning area of the clamp for positioning a workpiece, the other end face of the optical element is milled and processed into a plane after clamping, and the optical element is taken down from a heating gluing area; after the plane surface shape meets the requirement, the processed plane is taken as a reference plane of the optical element to be glued with the gluing area, and after the second end face is processed, the appearance of the optical element is processed by using an edging process; after the shape is processed, taking down the optical element and the positioning outer cone glue body, measuring the second end surface shape of the optical element, and heating the optical element and the positioning outer cone glue body to take down the workpiece if the surface shapes meet the requirements to obtain an optical element mirror body; and if the error of the second end surface is detected to exceed the tolerance, the optical element and the positioning outer cone glue body are assembled on the auxiliary positioning block again for compensation processing until the detected surface shape meets the requirement, and the optical element is taken down. The processing mode can effectively solve the eccentric error caused by the fact that the reference surface of the workpiece is not horizontal, and can also effectively solve the eccentric error that the optical axis of the workpiece deviates from the geometric center. The center thickness of the workpiece can be accurately controlled by taking the datum plane as a reference zero point.
Claims (7)
1. A clamp for positioning a workpiece, wherein a plane to be glued is arranged on the workpiece to be positioned, and the clamp is characterized by comprising: a gluing area, an isolation area and a reference positioning area; the gluing area and the reference positioning area are separated by the isolation area, a reference plane for positioning is arranged on the reference positioning area, and the gluing area is provided with a groove for containing hot melt adhesive; the isolation area is provided with an isolation groove for accommodating the hot melt adhesive overflowing from the gluing area; the matching mode of the gluing plane to be treated arranged on the workpiece and the reference plane on the reference positioning area is surface contact, the gluing area and the workpiece are provided with the gluing plane to be treated, the gluing plane is glued through hot melt adhesive and connected, the horizontal plane of the gluing area is at least 0.5mm higher than the horizontal plane of the isolation area, and the reference plane of the reference positioning area is 0.3-0.5 mm higher than the horizontal plane of the gluing area.
2. A fixture for workpiece positioning as defined in claim 1, wherein: and an air guide hole is further arranged, one end of the air guide hole is arranged in the isolation area, and the other end of the air guide hole is connected with the outside air.
3. A fixture for workpiece positioning as defined in claim 1, wherein: a heating circuit is also provided for heating the gluing zone.
4. A fixture for workpiece positioning as defined in claim 1, wherein: still be provided with hot melt adhesive container, hot melt adhesive pipe one end and hot melt adhesive container intercommunication, the other end and veneer district intercommunication.
5. A fixture for workpiece positioning as defined in claim 1, wherein: the gluing area is an inner gluing area, the isolation area is an inner isolation groove, and the reference positioning area is a reference positioning ring; the end face of the reference positioning ring is an annular reference plane, the inner gluing area is arranged in the annular reference plane, and the inner gluing area is inwards sunken to form a groove for containing hot melt adhesive; the inner isolation groove is arranged between the reference positioning ring and the inner gluing area and is inwards sunken to form an annular groove.
6. A fixture for workpiece positioning as defined in claim 5, wherein: an outer isolation groove and an outer gluing area are also arranged; the outer gluing area is arranged outside the annular reference plane and is inwards sunken to form a groove for containing hot melt adhesive; the outer isolation groove is arranged between the reference positioning ring and the outer gluing area and is inwards sunken to form an annular groove.
7. A jig for positioning a workpiece as recited in any one of claims 1 to 6, wherein: the positioning flange face, the auxiliary positioning block, the inner cone positioning face and the locking device are also arranged; the positioning outer cone is arranged at the bottom of the clamp for positioning the workpiece, and the central axis of the positioning outer cone is perpendicular to the reference plane of the reference positioning area; the positioning flange surface is positioned at the bottom of the clamp for positioning the workpiece, and is vertical to the central axis of the positioning outer cone; an inner cone positioning surface matched with the positioning outer cone is arranged on the auxiliary positioning block, and the end surface of the auxiliary positioning block is vertical to the central axis of the inner cone positioning surface; after the positioning outer cone is matched with the auxiliary positioning block, the inner cone positioning surface is tangent to the positioning outer cone, and the positioning flange surface is tangent to the end surface of the auxiliary positioning block; the locking device is arranged on the auxiliary positioning block and used for locking and positioning the outer cone and the auxiliary positioning block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185062.6U CN214771339U (en) | 2021-05-31 | 2021-05-31 | Clamp for positioning workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185062.6U CN214771339U (en) | 2021-05-31 | 2021-05-31 | Clamp for positioning workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214771339U true CN214771339U (en) | 2021-11-19 |
Family
ID=78698977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121185062.6U Active CN214771339U (en) | 2021-05-31 | 2021-05-31 | Clamp for positioning workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214771339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252303A1 (en) * | 2021-05-31 | 2022-12-08 | 苏州大学 | Fixture and method for workpiece positioning and machining method for optical element |
-
2021
- 2021-05-31 CN CN202121185062.6U patent/CN214771339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252303A1 (en) * | 2021-05-31 | 2022-12-08 | 苏州大学 | Fixture and method for workpiece positioning and machining method for optical element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113198697B (en) | Fixture and method for positioning workpiece and processing method of optical element | |
| CN100553956C (en) | Adopt the circle base to make the method for eyeglass | |
| US20080132157A1 (en) | Preformed Block Piece With Three Points of Support | |
| CN214771339U (en) | Clamp for positioning workpiece | |
| CN110614382B (en) | Processing method for turning free-form surface prism in ultra-precision manner | |
| CN102873383B (en) | Processing method of nonmetal special-shaped rudder sheet and clamp for processing | |
| CN106425750A (en) | Clamping jig and process of glasses | |
| CN108188840B (en) | Processing method of curved prism | |
| CN103659516B (en) | Edging method for meniscus lens centering | |
| CN111002493B (en) | Diamond turning method for large-caliber germanium single crystal lens | |
| CN109807694A (en) | It is a kind of to control disk tooling and polishing method on the mass center that the special-shaped high parallel error of optical window part is processed | |
| CN110744389B (en) | Positioning design and processing method of free-form surface prism | |
| CN109623558A (en) | A kind of method for precisely forming of off-axis aspheric surface lens | |
| CN104459840B (en) | Optical wedge and machining method | |
| CN114147504B (en) | Lens fixing device and ultra-precise turning method of lens | |
| CN216066803U (en) | Upper plate fixture of zinc selenide meniscus lens | |
| CN109807696B (en) | Method for processing low-eccentricity meniscus lens | |
| CN112157497B (en) | Precision grinding and polishing method for inner hole of large-diameter glass cylindrical window | |
| CN113814798A (en) | Machining method for large-caliber equal-thickness spherical cover | |
| CN109822360B (en) | Processing method of low-eccentricity-difference double-inner-conical-surface positioning block | |
| CN110394601B (en) | Numerical control machining method for multidimensional optical window part | |
| CN117283343B (en) | Auxiliary tool for producing and manufacturing dish-grinding products | |
| CN114193098B (en) | Processing method of high-precision sheet titanium alloy part for aircraft seeker | |
| CN203696664U (en) | Edging device for centering meniscus lens | |
| CN211681361U (en) | Polishing tool for optical numerical control precision machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |