GB813308A - A new or improved permanent-magnetic chuck - Google Patents
A new or improved permanent-magnetic chuckInfo
- Publication number
- GB813308A GB813308A GB34879/57A GB3487957A GB813308A GB 813308 A GB813308 A GB 813308A GB 34879/57 A GB34879/57 A GB 34879/57A GB 3487957 A GB3487957 A GB 3487957A GB 813308 A GB813308 A GB 813308A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bars
- strips
- soft iron
- ferro
- magnetic
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
- B23Q3/154—Stationary devices
- B23Q3/1546—Stationary devices using permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
813,308. Magnets. HAGOU METAALWARENFABRIEKEN N.V. Nov. 8, 1957 [Dec. 8, 1956], No. 34879/57. Class 35. [Also in Group XXIII] A magnetic workholder comprises a body member 3, Fig. 2, which incorporates a plurality of permanent magnets 5, presents at its upper surface elongated pole faces of alternate polarity and is slidable relative to a top plate 4 which has its upper surface formed from a plurality of soft-iron or like bars 11 of smaller width and spacing than the pole faces of the member 3 and separated from each other by narrow strips of non- ferro-magnetic material 12, and its lower surface formed from a plurality of soft iron or like strips 15 of the same width and spacing as the pole faces of the member 3. The body member 3 is constructed of the permanent magnets 5, which have their north poles uppermost, and soft iron or like bars 6 alternately arranged and separated from each other by aluminium spacers 7, the whole being clamped together by bolts 8. A soft iron or like plate 9 is secured to the base of the array which is slidable in an aluminium casing 1 between operative and inoperative positions. In the operative position, as shown in Fig. 2, the magnets and bars are aligned with the soft iron strips 15 secured to the top plate 4 which, in turn, is secured to the casing 1 and consists of the soft iron bars 11 and non-ferro-magnetic strips 12 clamped together between end blocks 13<SP>1</SP> by bolts 13. The narrow width of the bars 11 which may be straight or of zig-zag or other suitable shape, form an upper surface of narrow pole surfaces and enables small workpieces of little height to be securely held on the top plate. In the inoperative position, the array is moved half the pitch distance between the poles to the right so that the strips 15 bridge the space between the magnets 5 and bars 6 to substantially remove the magnetic force at the surface of the plate 4. In a modification, the strips 15 and bars 11 are replaced by rectangular blocks of the same width as the strips and having longitudinal vertical grooves cut approximately two thirds deep from the upper surface of the blocks and filled with non-ferro-magnetic material, the blocks being separated by a soft iron bar and non-ferro-magnetic strips. In a further modification, the strips 15 and bars 11 are replaced by groups of two or more profiled bars having a lower web portion 19, Fig. 4, and flange portion 20, the groups being separated by soft iron bars 11 and the intervening spaces filled with a non-ferro-magnetic material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL813308X | 1956-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB813308A true GB813308A (en) | 1959-05-13 |
Family
ID=19838783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34879/57A Expired GB813308A (en) | 1956-12-08 | 1957-11-08 | A new or improved permanent-magnetic chuck |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB813308A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046512A1 (en) * | 1980-08-21 | 1982-03-03 | Kanetsu Kogyo Kabushiki Kaisha | Magnetic chuck |
FR2546792A1 (en) * | 1983-05-30 | 1984-12-07 | Fuji Jiko Kk | PERMANENT MAGNETIC CHUCK |
US4663602A (en) * | 1986-04-03 | 1987-05-05 | Walker Magnetics Group, Inc. | Magnetic chuck |
CN110091253A (en) * | 2019-04-15 | 2019-08-06 | 宁波海迈克精密机械制造有限公司 | A kind of magnetic conduction pad suitable for Magnetic template |
-
1957
- 1957-11-08 GB GB34879/57A patent/GB813308A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046512A1 (en) * | 1980-08-21 | 1982-03-03 | Kanetsu Kogyo Kabushiki Kaisha | Magnetic chuck |
FR2546792A1 (en) * | 1983-05-30 | 1984-12-07 | Fuji Jiko Kk | PERMANENT MAGNETIC CHUCK |
US4663602A (en) * | 1986-04-03 | 1987-05-05 | Walker Magnetics Group, Inc. | Magnetic chuck |
CN110091253A (en) * | 2019-04-15 | 2019-08-06 | 宁波海迈克精密机械制造有限公司 | A kind of magnetic conduction pad suitable for Magnetic template |
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