JP2011177797A - Disk magnet chuck and device for supporting the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact, lightweight and powerful disk type magnet chuck structure, and to devise a supporting structure so as to allow a free working posture. <P>SOLUTION: A disk type magnet chuck structure is proposed, which is compact, lightweight and powerful consisting of two kinds, i.e., two semi-disk shapes and eight-fan shapes. A disk magnet chuck is useful as it is, and structures of a supporting device of one degree of freedom, a supporting device of two degrees of freedom, and a supporting device of three degrees of freedom are proposed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus capable of supporting a workpiece in a free orientation by a simple operation, such as a precision die or other stamping work or overlay welding work.

  There is a magnet chuck as a device that supports iron-based precision workpieces such as dies with simple operation. Especially in the field where recent technological progress is remarkable, it becomes an environment where a powerful device using a rare metal can be provided that could not be considered so far, and the structure of the magnet chuck (for example, Patent Document 1) has changed greatly. This has led to the creation of a small and lightweight disc that was ideal but could not be realized.

Moreover, when trying to build-up welding with a conventional magnet chuck, the high-temperature spatter often flew and the surface was often damaged. A characteristic of the magnetic chuck is that it can be supported even if it is covered with a sheet.
The covering sheet may be made of carbon fiber, non-woven paper, or saran wrap, but it is best that it has a large adsorption force (on-site term) and is flat. It was a common belief that the magnet chuck is heavy, difficult to work, and inefficient.

JP 2009-101446 A

  To create a compact, lightweight and powerful disc-type magnet chuck structure that was a problem of the prior art. And it is to devise a support structure so that a free working posture can be taken.

  A semicircular table casing is formed by brazing silver plates with a brass plate sandwiched between two semi-circular magnetic materials, and is formed on the side of the casing along the brass plate of the round table casing. A cylindrical switch for opening is provided, and a magnetic switch body having a columnar shape in which the N pole is magnetized on one side surface and the S pole is magnetized on the other side surface is rotatably coupled to the columnar magnetic switch. By making the slot provided in the end face of the body into a disc magnet chuck that is turned on and off with a tool, it is possible to achieve strength with small size and light weight. In the following, this species is referred to as a semi-circular two-sheet type.

  Further, an upper true circle table is formed by brazing silver plates with a brass plate sandwiched between the linear positions of the eight fan-shaped magnetic materials, and the lower true circle of the nonmagnetic material fastened with screws to the upper true circle table. A table is provided as a housing, and between the upper and lower perfect circle tables, there are eight discs with a N pole on one side of the disc and a S pole on the other disc. The large circles are arranged at equal intervals around the circumference and with different polarities adjacent to each other, and the inside of the circle has eight discs with N poles on one side of the board and S poles on the other side of the board. A switch plate made of a non-magnetic material is arranged so that small magnetized magnets are arranged at equal intervals around the circumference, and the polarities adjacent to each other are different, and the polarity is the same as that of the nearest magnet. A disc magnet chuck that is turned on and off with the knob of the outer ruled portion of the lower true circular table. Powerful small size and light weight can be achieved. Hereinafter, this type is referred to as an eight fan type.

  The lower surface of the disk magnet chuck is provided with a shaft with one degree of freedom to be screwed by a flange, and the one degree of freedom shaft is opposed to a base with one degree of freedom via a bearing. A one-degree-of-freedom work posture can be achieved by a disc magnet chuck support device provided with a one-degree-of-freedom one-friction brake knob capable of controlling one shaft. In addition, workability can be improved by increasing the freedom with two degrees of freedom and three degrees of freedom.

The inventor made two types of disc magnet chucks of two semicircles and eight fans of 100 mm in diameter and 20 mm in thickness, and measured the attractive force. (Originally, the term “adsorption force” seems to have originated from the vacuum adsorption force in the Magdeburg hemisphere, and the chuck force is called in this way. The unit is% or N for the vacuum adsorption force. .)
31.8% and 245N for the semi-circular two-sheet type. In the eight fan type, it was 65% and 500N. This was 2 to 4 times more effective than conventional magnet chucks. Therefore, a compact, lightweight and powerful disc type magnet chuck structure could be created.

  The increase in the attractive force was a reduction in weight, and a multi-degree-of-freedom mechanism was added, allowing for a free working posture.

It is a perspective view which shows the Example of this invention. It is the 3rd page figure which showed the Example of the semicircle 2 sheet type disk magnet chuck of this invention, (a) is a top view, (b) is II-II sectional drawing, (c) is III-III sectional drawing. is there. It is the 4th page figure which showed the Example of the fan 8 type disk magnet chuck of this invention, (a) is a top view, (b) is VI-VI sectional drawing, (c) is IV-IV sectional drawing, ( d) is a VV cross-sectional view. FIG. 4 is a diagram for explaining the operation of the semicircular two-disc magnetic chuck according to the present invention, where (a) shows an ON state and (b) shows an OFF state. It is an operation explanatory view of a fan 8 disk type magnetic chuck of the present invention, (a) shows an ON state and (b) shows an OFF state. It is a fragmentary sectional view showing the example of the 1 degree-of-freedom 1 support device of the present invention. It is a fragmentary sectional view showing the example of the 2 freedom degree support device of the present invention. It is a fragmentary sectional view which shows another Example of the freedom degree 2 support apparatus of this invention. FIG. 9 is a partial sectional view taken along line VII-VII in FIG. 8 in the embodiment of the present invention. It is a fragmentary sectional view showing the example of the 3 freedom degree support device of the present invention.

  There are two types of disc magnet chucks of the present invention: a semi-circular two-sheet type and an eight-fan type. The former can be manufactured at a relatively low cost, and the latter is characterized by a strong attraction force.

  The disc magnet chuck can be used as it is, but workability is improved by attaching a support device. In addition, the workability improves as the degree of freedom increases, but the support becomes expensive.

  The outline of the present invention will be described with reference to FIG. FIG. 1 is a perspective view of FIG. 9, and is a full set configuration.

  With reference to FIG. 2, a semi-circular two-disc magnetic chuck will be described. A semi-circular magnetic material 21 and a silver plate brazed with a brass plate 22 sandwiched between the two string positions of the two magnetic discs 21 to form a true circular table case 26, and the brass plate 22 of the true circular table case 26 A cylindrical hole 23 is formed on the side surface of the casing along the cylindrical hole 23 so that the magnetic switch body 24 having a columnar shape with the N pole on one side and the S pole on the other side can be rotated. A structure is adopted in which a slot provided in the end face of the cylindrical magnetic switch body 24 is turned on and off with a tool.

  The ON / OFF action of the semi-circular two-disc magnetic chuck will be described. As shown in FIG. 4, (a) is in the ON state, and the magnetic switch body 24 has the N pole and the S pole on the left and right, so magnetic lines of force are generated outside the round table housing 26 with the brass plate 22 as a boundary. To do. If there is a steel-based workpiece W here, it is adsorbed. In (b), since the N pole and the S pole of the magnetic switch body 24 are up and down in the OFF state, the magnetic lines of force stop in the perfect circular table casing 26 with the brass plate 22 as a boundary. Therefore, even if there is a steel-based workpiece W, there is no adsorption.

  As described above, the semi-circular two-disc magnet chuck has a diameter of 100 mm and a thickness of 20 mm, and the magnetic switch body 24 has a diameter of 16 mm and a length of 60 mm. The gap with 23 was 0.2 mm. The magnetic switch body 24 is made of a strong neodymium magnet material. The operation slot provided on the end face of the magnetic switch body 24 is a hexagonal hole, and the tool can be turned on and off with a hexagonal L-shaped wrench.

  With reference to FIG. 3, the eight-disk type disk magnet chuck will be described. The upper true circle table 36 is formed by brazing silver plates 32 with the brass plate 32 between the linear positions of the eight fan-shaped magnetic materials. A circular table 37 is provided as a housing. Between the upper true circular table 36 and the lower true circular table 37, there are eight discs with an N pole on one face and an S pole on the other face. The magnetized large magnetic material 34a is arranged at equal intervals around the circumference so as to have different polarities adjacent to each other. Eight discs are arranged on the inner side of the circumference, and an N pole is provided on one side of the disc. A small magnetic body 34b having the south pole magnetized on one side is arranged and held so as to be equally spaced apart from each other around the circumference, with different polarities adjacent to each other, and with the same polarity as that of the nearest magnetic body. A switch plate 38 of magnetic material is pivotably opposed, and is turned on and off by the knob 39 of the outer rule portion of the lower perfect circle table 37. F structure to operate.

  The ON / OFF action of the eight fan disc magnet chuck will be described. As shown in FIG. 5, (a) is in the ON state, the magnetic switch body 34 (the large magnetic body 34a and the small magnetic body 34b) is disk-shaped, the N pole and the S pole are up and down, and they are in a fan shape. Magnetic field lines are generated outside the upper perfect circle table 36 with the brass plate 32 as a boundary. If there is a steel-based workpiece W here, it is adsorbed. In (b), the N pole and S pole of the magnetic switch body 34 straddle the brass plate 32 in the OFF state, so that the magnetic lines of force stop in the upper perfect circle table 36. Therefore, even if there is a steel-based workpiece W, there is no adsorption.

  As a specific example, the 8-sector disc magnet chuck has a diameter of 100 mm and a thickness of 20 mm for the upper perfect circle table 36, a diameter of 20 mm, a thickness of 5 mm, a number of 8 for the magnetic body 34 a, and a magnetic body The diameter of the small 34b was 10 mm, the thickness was 5 mm, the number was 8 and the gap between the upper and lower circular tables was 0.2 mm. The magnetic switch body 34 is made of a strong neodymium magnet material. The lower round table 37 of nonmagnetic material and the switch plate 38 of nonmagnetic material are made of austenitic stainless steel so that the knob 39 can be turned on and off. The operating angle of the knob 39 is preferably 45 degrees, with the intermediate 22.5 degrees being ON and both ends being OFF.

The one-degree-of-freedom support of the disc magnet chuck 10 will be described with reference to FIG.
The lower surface of the disc magnet chuck 10 is provided with a 1 degree of freedom shaft 43 screwed by a flange 41, and the degree of freedom 1 shaft 43 is opposed to the degree of freedom 1 base 40 via a ball bearing 45, and the degree of freedom 1 By providing the base 40 with a one-degree-of-freedom friction brake knob 44 capable of controlling the one-degree-of-freedom shaft 43, a degree of freedom around the center line 41 and its suppression device can be obtained.

The two-degree-of-freedom support of the disc magnet chuck 10 will be described with reference to FIG.
The degree-of-freedom 1 base 40 is provided with a degree-of-freedom 2 shaft 53 that can be rotated in a direction perpendicular to the degree-of-freedom 1 shaft 43 that is screw-fastened by the degree-of-freedom 2 flange arm 52. The degree-of-freedom 2 base 50 is provided with a degree-of-freedom 2-friction brake knob 54 that can control the degree-of-freedom 2 shaft 53, so that the degree of freedom around the center line 51 can be reduced. A suppression device is obtained.

  As an additional function, the pin clamp will be described with reference to FIGS. In order to connect the one degree of freedom 1 base 40 and the degree of freedom 2 base 50 as much as possible, the freedom degree 2 flange arm 52 is provided with a pin hole 55, and the degree of freedom 2 base 50 is provided with a detachable clamp pin 56. Let me be treated. If there are seven pin holes 55 in the two-degree-of-freedom arm 52 with an equidistant spacing of 15 degrees from the rotation center 57 of the center line 51, the left and right 45 degrees can be coupled as much as possible.

  The three-degree-of-freedom support of the disc magnet chuck 10 will be described with reference to FIG. The degree-of-freedom 2 base 50 is provided with a degree-of-freedom 3 shaft 63 that can be rotated in a direction perpendicular to the degree-of-freedom 2 shaft 53 that is screw-fastened by the degree-of-freedom 3 flange arm 62. The degree-of-freedom 3 base 60 is provided with a degree-of-freedom 3-friction brake knob 64 capable of controlling the degree-of-freedom 3 shaft 63, so that the degree of freedom around the center line 61 can be increased. The suppression device is obtained.

  Since the present invention can compactly and strongly chuck a workpiece W such as a precision mold, and can support the workpiece W in a free orientation with simple operation, film protection is also possible. It is possible to contribute to the improvement of efficiency.

DESCRIPTION OF SYMBOLS 10 Disc magnet chuck 21 Semi-disc shaped magnetic material 22, 32 Brass plate 23 Cylindrical hole 24 Magnetic switch body 26 Round table housing 31 Fan-shaped magnetic material 34 Magnetic body 34a Large magnetic body 34b Small magnetic body 36 Upper perfect circle table 37 Lower round table 38 Switch plate 39 Knob of outer part 40 Freedom 1 base 41, 51, 61 Center line 42 Freedom 1 flange 43 Freedom 1 shaft 44 Freedom 1 Friction brake knob 45, 65 Ball bearing 50 Free Degree 2 base 52 degrees of freedom 2 flange arm 53 degrees of freedom 2 shaft 54 degrees of freedom 2 friction brake knob 55 pin hole 56 clamp pin 57 center of rotation 60 degrees of freedom 3 base 62 degrees of freedom 3 flange arm 63 degrees of freedom 3 shaft 64 degrees of freedom 3 Friction brake knob W Workpiece

Claims (10)

  A semicircular table casing is formed by brazing silver plates with a brass plate sandwiched between two semi-circular magnetic materials, and is formed on the side of the casing along the brass plate of the round table casing. A cylindrical switch for opening is provided, and a magnetic switch body having a columnar shape in which the N pole is magnetized on one side surface and the S pole is magnetized on the other side surface is rotatably coupled to the columnar magnetic switch. A disc magnet chuck that turns on and off the slot provided on the end face of the body with a tool.   2. The disc magnet chuck according to claim 1, wherein the operation groove provided in the end face of the cylindrical magnetic switch body is a hexagonal hole, and the tool is a hexagonal L-shaped wrench.   An upper perfect circle table is formed by brazing a silver plate with a brass plate sandwiched between the linear positions of the eight fan-shaped magnetic materials. The lower true circle table is a non-magnetic material that is fastened with screws. There is no housing, and between the upper and lower round tables, there are 8 discs with a large magnetic body with N poles on one side of the board and S poles on the other side of the board. Arranged so that the polarities adjacent to each other are equally spaced apart from each other on the circumference of the circumference, and the N poles are magnetized on one side of the disk and the S poles are magnetized on the other side of the board. Rotate a switch plate made of non-magnetic material that is arranged so that the small magnetic body is equally spaced around the circumference and the adjacent polarities are different, and the polarity is the same as that of the closest magnetic body large A disc magnet chuck that can be turned on and off with the knob of the outer rule portion of the lower true circular table.   4. The disc magnet chuck according to claim 3, wherein the material of the lower true circular table of the nonmagnetic material and the switch plate of the nonmagnetic material is an austenitic stainless material.   2. The disc magnet chuck according to claim 1, wherein the magnetic switch body is made of a neodymium magnet material.   4. The disc magnet chuck according to claim 3, wherein the material of the large magnetic material and the small magnetic material is a neodymium magnet material.   The lower surface of the disk magnet chuck according to claim 1 or 2 is provided with a shaft with one degree of freedom to be screwed by a flange, and the one degree of freedom shaft is opposed to a base with one degree of freedom via a bearing, and the degree of freedom A disc magnet chuck support device in which one base is provided with one degree of freedom one friction brake knob capable of controlling the one degree of freedom shaft.   The degree-of-freedom 1 base is provided with a degree-of-freedom 2 shaft that can be rotated in a direction perpendicular to a degree-of-freedom 1 shaft that is screw-fastened by a degree-of-freedom 2 flange arm. A disc magnet chuck support device in which a degree of freedom 2 friction brake knob capable of controlling the degree of freedom 2 shaft is provided on the degree of freedom 2 base.   The degree of freedom 2 base of claim 8 is provided with a degree of freedom 3 shaft that can be rotated in a direction perpendicular to a degree of freedom 2 shaft that is screw-fastened by a degree of freedom 3 flange arm, and the degree of freedom 3 shaft is free via a bearing. A disc magnet chuck support device in which a degree of freedom 3 friction brake knob capable of controlling the degree of freedom 3 shaft is provided on the degree of freedom 3 base.   9. The disk magnet chuck support device according to claim 8, wherein the one-degree-of-freedom base and the two-degree-of-freedom base can be pin-coupled as much as possible.

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