WO2019020420A1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

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Publication number
WO2019020420A1
WO2019020420A1 PCT/EP2018/069237 EP2018069237W WO2019020420A1 WO 2019020420 A1 WO2019020420 A1 WO 2019020420A1 EP 2018069237 W EP2018069237 W EP 2018069237W WO 2019020420 A1 WO2019020420 A1 WO 2019020420A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
holder
clamping
fixing device
socket
Prior art date
Application number
PCT/EP2018/069237
Other languages
German (de)
English (en)
Inventor
Sebastian SITZBERGER
Original Assignee
Technische Hochschule Deggendorf
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Technische Hochschule Deggendorf filed Critical Technische Hochschule Deggendorf
Publication of WO2019020420A1 publication Critical patent/WO2019020420A1/fr

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Classifications

    • 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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/005—Blocking means, chucks or the like; Alignment devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/34—Chucks with means enabling the workpiece to be reversed or tilted

Definitions

  • the invention relates to a fixing device for machining
  • Workpieces for example optical lenses, in order to be able to grind or polish these.
  • Fixing devices for clamping optical workpieces are already known in the prior art. These are used to hold an optical workpiece within a processing machine, by means of which the optical workpiece is mechanically processed, for example.
  • the mechanical processing may be, for example, a grinding process or a polishing process.
  • Optical workpieces often have to be fixed several times in order to carry out different process steps on them.
  • an optical lens often needs to be machined on the two opposite sides to achieve the desired optical properties.
  • the problem here is that by the multiple
  • the patent DE 101 39 805 C1 discloses a lens frame.
  • the lens frame comprises several load-bearing elements that fit into one
  • European Patent Application EP 2 163 345 A1 discloses a
  • Clamping device is rotatably mounted on the frame. Based on this, it is an object of the invention, a fixing device, in particular a lens or lens blank fixing device
  • the invention relates to a
  • Fixing device for positionally accurate fixing of machined
  • the fixing device comprises a workpiece holder, which has at least one first, radially outer workpiece-holding element.
  • the workpiece holder is ring-shaped, enclosing the workpiece circumferentially, so that the workpiece in a
  • the fixing device further comprises a holder holder, which has a receiving area for clamping the workpiece holder.
  • the first workpiece-holding element is constructed symmetrically with respect to a transverse plane extending perpendicular to the workpiece-holder central axis, which is in particular a central transverse plane of the first workpiece-clamping element, in such a way that the workpiece holder projects over the first workpiece-holding element in a first installation position and in the first installation position around an in-line position the transverse plane extending transverse axis rotated by 180 °, second mounting position in the
  • the essential advantage of the fixing device according to the invention is that the workpiece, after it has been fixed in the workpiece holder, can remain in this workpiece holder until all
  • Machining accuracy of the workpiece can be achieved.
  • Conical surface of the socket holder corresponds, a highly accurate centered introduction of the workpiece holder is achieved in the socket holder.
  • the conical surfaces of the first workpiece-clamping element are designed in opposite directions, such that the circumference of the first workpiece-clamping element decreases toward the upper and lower side surfaces of the first workpiece-clamping element.
  • the first Werk publishedsele- ment is biconical, wherein the conical surfaces taper so that the diameter of the first Workpiece clamping element of a measured in the transverse plane first diameter to a measured in the region of the side surface second diameter down.
  • the conical surfaces of the first workpiece-holding element are ring-like or ring-segment-like. This allows a highly accurate centering of the workpiece holder can be achieved in the socket holder, in each of the two
  • Reference position is aligned exactly centered.
  • the receiving region of the holder holder on the inner peripheral side on at least one ring-like or ring segment-like cone surface may for example be formed as a continuous ring or formed by a plurality of circumferentially distributed arranged cone ring segments. Depending on the installation position, this conical surface acts in each case with one of the conical surfaces provided on the outside circumference of the workpiece holder, thereby achieving a highly accurate, centered reception of the workpiece holder in the holder holder.
  • clamping means can engage to fix the workpiece holder within the socket holder.
  • the clamping means can be designed to interlock positively in the groove or the groove segments.
  • Workpiece clamping element on the upper and lower side surface at least one groove, at least one notch and / or at least one protruding from the side surface projection, the / cooperate with at least one corresponding projection, at least one groove or at least one notch in the receiving area of the socket holder form fit.
  • the cooperating grooves, notches or protruding from the side surfaces projections a positive connection between the
  • the projections, grooves or indentations may be arranged such that the workpiece holder can be introduced only in exactly one single rotational position in the holder holder. This can in particular by a kind of local or
  • the projections, grooves or indentations on the two opposite side surfaces of the workpiece holder are provided such that regardless of the installation position of the workpiece holder, the workpiece always in the same rotational position in the
  • Holder is mountable.
  • the workpiece holder is for
  • This Workpiece connecting piece can be materially connected, for example by an adhesive bond, with the workpiece. Alternatively, it is possible the connection between workpiece and
  • Workpiece connector e.g., shrink sleeve
  • the workpiece connection piece not only serves to couple the workpiece to the workpiece holder, but preferably also remains there after processing of the workpiece and then serves as the coupling interface of the workpiece in the workpiece
  • the workpiece holder is designed in several parts and is at least a second between the first workpiece-holding element and the workpiece connecting piece
  • This first workpiece-holding element serves as an interface to the frame holder and has highly accurately manufactured surfaces which bear against the frame holder.
  • Workpiece-engaging element connects the workpiece connector to the first workpiece-sensing element.
  • the second workpiece-clamping element comprises an upper and a lower workpiece-clamping element part. The upper and the lower
  • Workpiece clamping element part have contact surfaces for the first Workpiece clamping element and for the workpiece connector, which between the upper and the lower
  • Workpiece clamping element part are clamped fixable. Due to the multi-part design of the workpiece holder are a highly accurate fixation of the workpiece in this workpiece holder and a
  • Socket holder reached.
  • a circumferential or a plurality of distributed arranged contact surfaces for plan positioning of the workpiece holder are provided on the receiving area of the holder holder.
  • This contact surfaces are formed, for example, by upwardly projecting surfaces, which are made for example by grinding with high precision, so that a planar positioning of the
  • the socket holder
  • Clamping means for clamping the workpiece holder in the receiving area. These clamping means are in particular designed such that the workpiece holder provided on a in the socket holder
  • the tensioning means can be actively moved or manually operated by automatic drive means.
  • the clamping means by
  • Clamping bolts formed which are formed deliverable in the radial direction on the workpiece holder.
  • the clamping means are adapted to the workpiece holder in a direction perpendicular to the radial direction (ie, for example, on the Directed contact surfaces for plan positioning) in the
  • the clamping means may be formed by a clamping ring, in addition to a seal of
  • Planpositioning of the workpiece holder causes directional clamping of the workpiece holder in the holder holder. This results in a highly accurate, releasable fixation of the workpiece holder in the
  • the clamping means are adapted to at least a partial peripheral, in particular
  • the clamping means have a projection which engages in a groove provided on the outer peripheral side on the workpiece holder, in particular the first workpiece-holding member.
  • the clamping means cause a particularly advantageous positionally accurate
  • the clamping means are as
  • the clamping means are formed by spring-loaded clamping bolts that through
  • clamping bolts Spring force are pressed into an advanced position. In this advanced position, the free ends of the clamping bolts act on the workpiece holder and fix it by clamping.
  • the clamping bolts can be brought via suitable automatic or manual drive means in a retracted position, so that the clamping of the workpiece holder canceled and thus the workpiece holder
  • the clamping means are deactivated by negative pressure or by a pressurized fluid, so that the Clamping of the workpiece holder is canceled.
  • channels may be provided in the socket holder in order to transmit the fluid actuating the clamping means or the negative pressure to the clamping means.
  • the socket holder is designed in several parts and has at least one lower and one upper
  • the lower frame support part for example, in the lower area an interface to a
  • Processing machine are formed by a cylindrical mounting mandrel or a polygonal cone over which the lower
  • Holder mount part is fixed to the processing machine.
  • Holder mounting part may be formed, for example ring-like and limit the receiving area radially outward.
  • clamping means can be fixed or integrated in the upper mounting bracket part.
  • the socket holder below the receiving area on a liquid receiving space, which is filled with a fluid to support the workpiece to be machined on the bottom side.
  • a fluid to support the workpiece to be machined on the bottom side.
  • one or more channels may be provided in the socket holder in order to fill the liquid receiving space with a fluid, in particular a liquid.
  • sealing means may be provided to seal the receiving area to the workpiece frame.
  • the fluid receiving space can be direct and immediate be formed in the receiving space of the socket holder, ie, the fluid can be filled directly into the liquid receiving space and there is no further element (expanding wall, membrane, etc.) is provided, which separates the fluid and the workpiece to be machined.
  • the liquid receiving space can also be formed by a balloon-like structure, an expanding wall or a membrane which is provided in the receiving space and in which or under which the fluid is introduced.
  • means for varying the pressure in the liquid receiving space are provided. These means can be formed by any actuator unit, by means of which a
  • Pressure change can be achieved, in particular those means that allow an increase or decrease in the pressure via a change in volume of the liquid receiving space.
  • the actuator can be a
  • the adjusting unit can be formed for example by a micrometer screw or an electrically, pneumatically or hydraulically controllable actuator.
  • the actuator may also be a piezo actuator.
  • the actuator can also have a piston or a
  • the invention relates to a method for fixing workpieces to be machined, in particular optical
  • the fixing device comprises an annular workpiece holder and a holder holder, which has a receiving area for clamping the workpiece holder.
  • the method comprises the following steps:
  • high-precision or high-precision in the sense of the present invention is meant a fixing device which is a repeatable
  • Cradle holder by 180 °, in the range of, for example, 5 ⁇ to ⁇ , ⁇ , in particular 1 ⁇ allowed to 0.1 m.
  • FIG. 1 shows an example of an embodiment of a fixing device in an exploded view
  • FIG. 2 by way of example the fixing device of FIG. 1 in a
  • FIG. 3 shows by way of example a sectional view of that shown in FIG
  • FIG. 4 shows by way of example a sectional view of that shown in FIG.
  • Fixing device along the section line C-C shown in Figure 2; 6 shows by way of example a sectional illustration of that shown in FIG
  • FIG. 7 shows by way of example a cake-slice-like sectional view of the fixing device shown in FIG. 1 in a perspective view;
  • Fixing device in which the workpiece holder is shown detached from the socket holder; 9 shows by way of example a sectional illustration of a fixing device with an actuator unit for setting the pressure in FIG
  • FIG. 10 shows, by way of example, a detail representation of the actuator unit shown in FIG. 9 to a greater degree of detail
  • Fig. 1 1 by way of example a sectional view of a fixing device with an actuator unit for adjusting the pressure and a
  • Pressure sensor for measuring pressure in
  • Liquid holding space 12 shows by way of example a detail view of the actuator unit shown in FIG. 11 in a higher degree of detail;
  • FIG. 13 shows by way of example a detail view of the pressure sensor shown in FIG. 11 in a higher degree of detail.
  • FIG. 1 shows an exploded view of a device according to the invention
  • the fixing device 1 comprises a
  • the term "workpiece” is understood to mean a part of any kind to be machined and formed from any material which can be tensioned or machined in the fixing device 1 according to the invention. In particular, this may be an optical lens or a lens blank.
  • the invention thus relates in particular to a lens-fixing device.
  • the fixing device 1 further comprises a holder holder 4, the one
  • the holder holder 4 preferably also serves as an interface to the machine tool, by means of which the workpiece 2 is processed.
  • the holder holder 4 has an interface surface 4b, by means of which the fixing device 1 rests against a processing table of the processing machine.
  • the interface of the fixing device 1 can be adapted to the machine tool and can
  • Fixing device 1 on the processing machine and / or means for centering or alignment of the fixing device 1 relative to this processing machine for example in the form of a king hole, a cylindrical mounting mandrel, a polygonal cone, etc.
  • the detailed structure of the fixing device 1 and its operation will be described below with reference to Figures 2 to 7 in more detail.
  • a workpiece connection piece 2.1 is attached to the workpiece 2.
  • Workpiece connector 2.1 is preferably ring-shaped, i. encloses the workpiece 2 circumferentially completely.
  • Metal ring for example, be formed of aluminum, brass or similar material.
  • the workpiece connection piece 2.1 can be connected to the workpiece 2 by means of integral connection means, for example by an adhesive, preferably non-detachably.
  • the workpiece connecting piece 2.1 may be positively and / or non-positively connected to the workpiece 2, for example by
  • This workpiece connection piece 2.1 preferably remains after the machining of the workpiece 2 at this and serves, for example, in the subsequent installation situation of the workpiece 2 for fixing in a corresponding receptacle.
  • the workpiece holder 3 itself is formed in several parts in the embodiment shown and comprises a first workpiece-holding element 3.1, preferably the radially outer part of the
  • Workpiece frame 3 forms. For connecting the workpiece 2
  • Workpiece clamping element 3.1 is at least a second
  • the second workpiece-holding element 3.2 comprises a lower and an upper workpiece-holding element part 3.2.1, 3.2.2, which are formed, for example, like a ring.
  • Workpiece clamping element part 3.2.1 has a radially inner one Recording for the workpiece connector 2.1 on.
  • this recording a lower contact surface and a radially
  • Workpiece connecting piece 2.1 form enclosing bearing surface for the workpiece connecting piece 2.1.
  • Workpiece connecting piece 2.1 radially enclosing contact surface can be adapted to the outer diameter of the workpiece connecting piece 2.1 fit or the contact surface may have an internal thread into which a corresponding external thread of the
  • Workpiece element part 3.2.1 a receptacle for the first
  • Workpiece clamping element 3.1 can be screwed.
  • the two workpiece holder element parts 3.2.1, 3.2.2 can be
  • Work piece center axis WMA i. be clamped against each other in a direction perpendicular or substantially perpendicular to the workpiece-top.
  • This clamping preferably causes a clamping of the upper workpiece-engaging element part 3.2.2 relative to the lower workpiece-holding element part 3.2.1, so that the second workpiece-clamping element 3.2
  • the Workpiece clamping element 3.1 is firmly connected.
  • the first workpiece-holding element 3.1 is preferably likewise of annular design. It serves for the registration and replication of the rotational position and the spatial position
  • Workpiece centering axis WMA extends symmetrically, in particular mirror-symmetrical design.
  • the workpiece holder 3 can be installed in two different mounting positions in the holder holder 4, in a first installation position in which the example in Figure 1 overhead side of the workpiece 2 on the
  • Interface surface 4b of the frame holder 4 opposite side shows and in a second installation position in which the workpiece 2 by 180 ° about the transverse plane QA extending in the transverse plane QA turned into the socket holder 4 is added, so that in the first
  • the workpiece 2 on the workpiece holder 3, which remains on the workpiece 2 can be clamped positionally accurate, so that a machining of both sides of the workpiece is made possible, with a fixed location reference to each other (see Fig. 8).
  • the conical surfaces 3.1 .1, 3.1 .1 ' can be ring-shaped, in particular annular or ring-segment-like.
  • the conical surface 4.1 is provided, for example, as shown in FIG. 3, peripherally surrounding the receiving region 4a of the workpiece holder 3.
  • the conical surface 4.1 is in this case adapted to the conical surface 3.1 .1, 3.1 .1 'of the first workpiece-holding element 3.1 (for example by means of an inverse inclination of the
  • the workpiece holder 3, in particular the first workpiece-holding element 3.1 has an at least partially, preferably circumferentially circumferential groove 3.1 .4.
  • this groove 3.1 .4 clamping means 5 intervene to ensure a backup of the workpiece holder 3 in the holder holder 4 and a directed towards the workpiece holder axis WMA pressing against the holder holder 4.
  • Workpiece clamping element 3.1 are preferably ground flat and serve as contact surfaces against corresponding contact surfaces
  • the socket holder 4 is formed in several parts and consists essentially of a lower and an upper socket support part 4A, 4B. This multi-part design is advantageous for manufacturing reasons. However, the
  • the lower frame support part 4A comprises the interface surface 4b and a ring-like portion 4.5 protruding from the interface surface 4b on the upper side, preferably on the upper side circumferentially distributed contact surfaces 4.2 and the engaging in the grooves 3.1 .5 projections 4.3 are provided.
  • the upper frame support part 4B is adapted to be placed on the upper frame support part 4A on the upper side and fixed thereto.
  • the fixing of the mounting bracket parts 4A, 4B against each other can be done by any connection means, in particular by screwing or by a ring-like section 4.5 circumferentially provided external thread, which cooperates with a corresponding inner peripheral side provided internal thread of the upper frame support part 4B.
  • the upper frame support part 4B is, for example, ring-shaped and has the inner circumference of the conical surface 4.1, which, depending on the installation position with one of the conical surfaces 3.1 .1, 3.1 .1 'of the first workpiece-holding element 3.1 cooperates.
  • clamping bolts 5.1 are provided circumferentially distributed.
  • the clamping means 5 are formed in the embodiment shown self-locking, ie without applying external forces, the clamping means. 5 held in the securing position, ie they fix the workpiece holder 3 within the without even from outside forces
  • Lampholder 4 the clamping bolt 5.1 by elastic elements, in particular by spring elements 5.2 in one
  • the one on the bottom Socket mounting part 4A patch upper Fassungshalterungsteil 4B also has gas channel sections 6.4, which are fluidly connected to the annular channel 6.3 and via which a supply of the vacuum or the pressurized fluid to the clamping bolt 5.1.
  • a ring-like cover member 7 is provided.
  • This ring-like cover member 7 is formed in the embodiment shown to prevent contamination of the fixing device 1 in the area between the workpiece holder 3 and the socket holder 4.
  • the cover 7 preferably
  • Sealing elements which come to rest against the workpiece holder 3 and the holder holder 4 and thus dustproof and in particular fluid-tight seal the transition region, thereby preventing penetration of particles formed during workpiece machining or fluids used in processing.
  • the covering element 7 can also be used as a clamping means 5, in particular around the workpiece holder 3 with respect to the contact surfaces 4.2 of the holder holder 4
  • This liquid receiving space 4.4 is formed, for example, by a basin-like recess 8 on the lower frame support part 4A.
  • a fluid in particular a liquid, such as water, are introduced to fill the liquid receiving space 4.4 to the workpiece 2 to be machined with the fluid.
  • a fluid supply channel 8.1 is provided in the lower frame support part 4A. Via this fluid supply channel 8.1, a fluid, in particular a liquid can be introduced into the liquid receiving space 4.4.
  • a vent channel 8.2 may be provided in the lower frame support part 4A.
  • Fluid receiving space 4.4 contained in the air can escape when introducing the fluid.
  • the fixing device 1 is positioned such that the with the
  • Venting channel 8.2 connected opening in the liquid receiving space 4.4 forms the highest point of the liquid receiving space 4.4, so that after the escape of air from the liquid receiving space 4.4, the entire area below the workpiece 2 filled with the fluid and thereby a sufficient support of the workpiece 2 is given during workpiece machining , To seal the liquid receiving space 4.4 in the direction of
  • a ring-like sealing element 9 may be provided. This preferably runs peripherally in the region between the lower frame support part 4A and the second
  • FIG. 9 shows an embodiment of the fixing device 1, which has means for changing and adjusting the pressure in the liquid receiving space 4.4.
  • Fluid receiving space 4.4 can be effected by any actuator unit 10, via which a volume change of the
  • Fig. 10 shows the means for changing and adjusting the pressure in the liquid receiving space 4.4 of the shown in Fig. 9
  • the change in volume is effected here by an actuator unit 10, which can be screwed in or
  • Screw-in micrometer and a piston 10.2 includes.
  • Fluid receiving space 4.4 is used.
  • the piston 10. 2 is guided in a sealed manner in a bore of the socket holder 4.
  • the piston 10.2 is spring-loaded and is replaced by a spring 10.3 in one of
  • the actuator 10.1 may have a positioning accuracy in the sub-micrometer range, for example, a positioning accuracy less than 0.5 ⁇ , in particular 0.1 ⁇ or smaller.
  • the adjustment of the pressure in the liquid receiving space 4.4 by means of the adjusting unit 10.1 can be done via an optical measuring method, in particular an interferometer.
  • an optical measuring method can be determined when a gravitational deformation of the workpiece 2 is balanced and how much or in which direction the actuator 10.1 must be adjusted.
  • a pressure sensor which measures the pressure in the liquid receiving space 4.4 in order, for example, to be able to detect dynamic changes in the pressure in the liquid receiving space 4.4.
  • Fig. 1 1 shows a further embodiment of the fixing device 1, which means for changing and adjusting the pressure in
  • the actuator unit 10 is formed in this embodiment by an actuating unit 10.1, which acts on a solid-state joint.
  • the actuating unit 10.1 can in particular be an automatically actuatable actuating unit and be formed, for example, by a piezoactuator.
  • other actuators are conceivable, for example, electrically, hydraulically or pneumatically operated actuators.
  • the actuator 10.1 may, for example, a
  • Adjustment accuracy less than 10 nm, in particular less than 1 nm.
  • the actuating unit 10.1 acts on
  • a pressure sensor 1 1 is provided, via which the pressure in the liquid receiving space 4.4 can be detected.
  • a time-varying pressure for example due to a leak in the liquid receiving space 4.4, can be detected.
  • a dynamically changing pressure can be detected, for example, by a working tool acting on the workpiece 2.
  • the actuator unit 10 and the pressure sensor 1 1 are designed such that a dynamic control of the pressure in
  • Fluid receiving space 4.4 is enabled. So, for example upon actuation of a machining tool on the workpiece 2 and after detection of a resulting increase in pressure in the liquid receiving space 4.4, the actuator unit 10 is controlled in such a way that a certain desired pressure in the
  • Fluid receiving space 4.4 sets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

L'invention concerne un dispositif de fixation pour la fixation dans une position précise de pièces (2) à usiner. Le dispositif comporte : − un porte-pièce (3) qui présente au moins un premier élément (3.1) situé radialement à l'extérieur et qui est annulaire, lequel porte-pièce entoure la pièce (2) côté périphérie et dans lequel la pièce (2) peut être fixée dans une zone intérieure (3a) de porte-pièce ; et − un élément de retenue (4) de porte-pièce qui présente une zone de logement (4a) pour le serrage du porte-pièce (3). Le premier élément (3.1) de porte-pièce est conçu de manière symétrique par rapport à un plan transversal (QE) s'étendant perpendiculairement à l'axe médian (WMA) du porte-pièce, et ce de telle sorte que le porte-pièce (3) peut être serré dans l'élément de retenue (4) de porte-pièce par l'intermédiaire du premier élément (3.1) de porte-pièce dans une première position de montage et dans une deuxième position de montage en rotation de 180° autour d'un axe transversal (QA) s'étendant dans le plan transversal (QE) par rapport à la première position de montage.
PCT/EP2018/069237 2017-07-27 2018-07-16 Dispositif de fixation WO2019020420A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017117037.5A DE102017117037A1 (de) 2017-07-27 2017-07-27 Fixiervorrichtung
DE102017117037.5 2017-07-27

Publications (1)

Publication Number Publication Date
WO2019020420A1 true WO2019020420A1 (fr) 2019-01-31

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DE (1) DE102017117037A1 (fr)
WO (1) WO2019020420A1 (fr)

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US20210178555A1 (en) * 2019-12-12 2021-06-17 Benz Research And Development Corp. Mandrel for holding a lens blank and method of making a lens using the same
DE102020209590A1 (de) 2020-07-30 2021-08-05 Carl Zeiss Smt Gmbh Vorrichtung und Verfahren zum Polieren eines optischen Elements
CN114986397A (zh) * 2022-06-08 2022-09-02 中国人民解放军国防科技大学 用于水射流抛光工艺的夹紧装置

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CN110449951B (zh) * 2019-08-29 2021-09-21 泰州润瀚环境科技有限公司 一种管道出水口加工设备
CN112809046B (zh) * 2021-01-22 2022-03-22 杭州雅钰医疗用品有限公司 一种金属义齿切削装置及其切削工艺

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US20210178555A1 (en) * 2019-12-12 2021-06-17 Benz Research And Development Corp. Mandrel for holding a lens blank and method of making a lens using the same
CN115379924A (zh) * 2019-12-12 2022-11-22 宾视研发公司 用于保持透镜坯料的心轴和使用该心轴制造透镜的方法
US11819980B2 (en) * 2019-12-12 2023-11-21 Benz Research And Development Corp. Mandrel for holding a lens blank and method of making a lens using the same
JP7489465B2 (ja) 2019-12-12 2024-05-23 ベンズ リサーチ アンド デベロップメント コーポレイション レンズブランクを保持するマンドレルとそれを用いるレンズの作製方法
DE102020209590A1 (de) 2020-07-30 2021-08-05 Carl Zeiss Smt Gmbh Vorrichtung und Verfahren zum Polieren eines optischen Elements
CN114986397A (zh) * 2022-06-08 2022-09-02 中国人民解放军国防科技大学 用于水射流抛光工艺的夹紧装置

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