JPS63189537U

JPS63189537U -

Info

Publication number: JPS63189537U
Application number: JP7877787U
Authority: JP
Priority date: 1987-05-27
Filing date: 1987-05-27
Publication date: 1988-12-06

Description

[Brief explanation of the drawing]

第１図は本考案の永久磁石チヤツクの一実施例
をその一部を破断して非励磁状態で示す平面図、
第２図は第１図の２―２線に沿つて得た断面図、
第３図は第１図の永久磁石チヤツクをその一部を
破断して励磁状態を示す平面図、第４図は第３図
の４―４線に沿つて得た断面図、第５図は第１図
の５―５線に沿つて得た断面図、第６図は磁性体
に作用する磁束を説明するための図、第７図は永
久磁石チヤツクの他の実施例をその一部を破断し
て非励磁状態で示す平面図である。１８：ハウジング、２０：固定の永久磁石、２
２：可動の永久磁石、２６：可動板、３０：操作
機構、４０，５４：磁極面部分を構成する磁極部
材、４２：非磁性部材。 FIG. 1 is a partially cutaway plan view showing an embodiment of the permanent magnet chuck of the present invention in a non-excited state;
Figure 2 is a cross-sectional view taken along line 2-2 in Figure 1;
Fig. 3 is a partially cutaway plan view of the permanent magnet chuck shown in Fig. 1 showing the excitation state, Fig. 4 is a sectional view taken along line 4-4 in Fig. 3, and Fig. 5 is A sectional view taken along line 5-5 in Fig. 1, Fig. 6 is a diagram for explaining the magnetic flux acting on a magnetic material, and Fig. 7 shows a part of another embodiment of the permanent magnet chuck. It is a top view cut away and shown in a non-excited state. 18: Housing, 20: Fixed permanent magnet, 2
2: Movable permanent magnet, 26: Movable plate, 30: Operating mechanism, 40, 54: Magnetic pole member constituting the magnetic pole surface portion, 42: Non-magnetic member.

Claims

[Claims for Utility Model Registration] (1) A housing comprising a working surface on which a plurality of elongated magnetic pole face portions are arranged parallel to each other at a predetermined pitch in one direction; a plurality of fixed permanent magnets arranged at a constant pitch in the arrangement direction of the housing; a plurality of movable permanent magnets arranged at the same pitch as the fixed permanent magnets in the arrangement direction of the magnetic pole face portions and movable in the arrangement direction of the magnetic pole face portions; a switchable permanent magnet chuck including an operating mechanism for moving the movable permanent magnet to selectively switch the movable permanent magnet into a state, the movable permanent magnet having a a first position that is magnetically connected to a magnetic pole face of the same polarity of the fixed permanent magnet via the magnetic pole face portion, and a distance that is larger than the arrangement pitch of the movable permanent magnet from the first position. a second spaced apart in the direction of movement of the movable permanent magnet;
in a position where the magnetic pole face of one of the movable permanent magnets is of a different polarity of the fixed permanent magnet and of the same polarity of another fixed permanent magnet disposed adjacent to the fixed permanent magnet. a switchable permanent magnet chuck movable between a second position magnetically connected to a pole face via said pole face portion; (2) the work surface is energized when the movable permanent magnet is moved to the first position and de-energized when the movable permanent magnet is moved to the second position; 2. A permanent magnet chuck according to claim (1) of the utility model registration, which is placed in the state of (3) The permanent magnet chuck according to claim 1 or 2, wherein the movable permanent magnet and the fixed permanent magnet have the same size.