JPH0442348U

JPH0442348U -

Info

Publication number: JPH0442348U
Application number: JP8362690U
Authority: JP
Priority date: 1990-08-09
Filing date: 1990-08-09
Publication date: 1992-04-10

Description

[Brief explanation of the drawing]

第１図は本考案のパレツトクランプ装置に係る
一実施例及び従来の技術の断面図、第２図は本考
案の一実施例に係る第１図のＡ部拡大図、第３図
は従来の技術に係る第１図のＡ部拡大図である。図面中、１はパレツト、２はクランププレート
、３はクランプテーブル、３ａ，３ｂは油圧ポー
ト穴、４はピストン、４ａ，４ｂは油溜部、４ｃ
，４ｄは微小通路、８はチエツクバルブである。 Fig. 1 is a sectional view of an embodiment of the pallet clamp device of the present invention and a conventional technique, Fig. 2 is an enlarged view of part A of Fig. 1 according to an embodiment of the present invention, and Fig. 3 is a conventional one. FIG. 2 is an enlarged view of part A in FIG. 1 according to the technique of FIG. In the drawing, 1 is a pallet, 2 is a clamp plate, 3 is a clamp table, 3a, 3b are hydraulic port holes, 4 is a piston, 4a, 4b are oil reservoirs, 4c
, 4d are micro passages, and 8 is a check valve.

Claims

[Scope of utility model registration request]

A pallet loaded with a workpiece and moved between a work table of a machine tool and a position outside the machine tool, a clamp table that supports and fixes the pallet, and a pallet that is slidably supported by the clamp table and that is moved between the work table of the machine tool and a position outside the machine tool. A pallet clamp device comprising a piston that moves the pallet up and down on a clamp table to fix and release the pallet,
When the piston moves near the ascending end position and near the descending end position of the piston, the clamp table is positioned so as to be located opposite the oil reservoirs formed on the upper and lower end surfaces of the piston, respectively, and the side surfaces of the piston. A pallet clamping device characterized in that the pallet clamping device communicates with a hydraulic port hole formed in the pallet through only a minute passage.