JP6153790B2 - Centering device and centering method - Google Patents

Description

  The present invention relates to a centering device and a centering method, and more particularly to a centering device and a centering method suitable for obtaining the center of a space surrounded by a plurality of protrusions or planes.

Conventionally, there is an electromagnet device used as an experimental device for elementary particles, etc., but when assembling the experimental device, the central position of the central space of the electromagnet device and other devices by adjusting the relative positions of multiple devices and tubes And the center axis of the tube had to be aligned.
On the other hand, various centering techniques have been proposed for indicating the central axis of a tube or the like whose central portion is a space. Patent Document 1 below discloses an example of such a centering method and apparatus.

Japanese Patent No. 2734974

The conventional centering method and apparatus described above have the following problems.
(1) In the case where the object that defines the space to be centered consists of a plurality of end portions of the target device, and the shape of the end portion is a partial curved surface or plane, the reference position of the target device is It is difficult to remove and it is difficult to fix measuring instruments.
(2) Measurement and calculation in the centering work are time-consuming and the centering accuracy is low.

  The object of the present invention is to solve the problems of the prior art as described above, and to easily and accurately determine the position of the central axis of the space surrounded by a plurality of protrusions or planes of the target device. An object of the present invention is to provide a centering device and a centering method using the centering device.

  The centering device of the present invention is a centering device for determining the position of the center axis of a space defined by a plurality of protrusions or planes arranged at equal distances from each other and at equal angles from the center axis of the centering target device. Corresponding to the projection or plane, the shortest position to the central axis on the projection or plane is a position where the distance from the central axis is slightly shorter than the shortest distance between the projection or plane and the central axis. A plurality of planes or protrusions arranged so as to intersect perpendicularly to a perpendicular line extending from the centering device to the central axis of the centering device, and guide means for indicating the position of the central shaft of the centering device Features.

In the centering device described above, the centering device is a hollow, substantially cylindrical shape whose radius is slightly longer than the shortest distance between the projection or plane and the center, and is equiangular with the side surface of the cylindrical shape. The plurality of planes or protrusions are formed, and a cross target indicating the center of a centering device constituted by a thin wire is attached to one end of the cylindrical shape.
Further, in the above-described centering device, the centering target device is an electromagnet device in which four electromagnets are arranged around the central space, and the plurality of protrusions have four end-shaped kamaboko shapes. It is also characterized by its magnetic core.

The centering method of the present invention is a centering method for obtaining the position of the center axis of a space defined by a plurality of protrusions or planes arranged at equal distances from each other and at equal angles from the center axis of the centering target device. Corresponding to the protrusion or plane, the shortest position to the central axis on the protrusion or plane is a position where the distance from the central axis is slightly shorter than the shortest distance between the protrusion or plane and the central axis. A centering device comprising a plurality of planes or protrusions arranged so as to intersect perpendicularly to a perpendicular line extending from the centering device to the center axis of the centering device, and guide means for indicating the position of the center axis of the centering device medium to, as a projection or a plane of said centering target device and the plane or projection of the centering device are face to face, the step of inserting the centering device in the space, the central shaft to the centering device While applying a torque to rotate the added force to move the central axis direction perpendicular to the direction of the torque in the power center axis in a plane perpendicular to the direction of the step of sequentially changing in opposite directions Inclusion is the main feature.

The centering device and the centering method of the present invention have the following effects.
(1) The centering method using the centering apparatus of the present invention is very easy to operate and can perform centering with high accuracy.
(2) The centering device of the present invention has a simple structure and is easy to manufacture.
(3) The centering device of the present invention is held in the device without being displaced even if the hand is released in the centering state, and can be easily removed.

FIG. 1 is a plan view, a side view, and a sectional view showing the configuration of the centering device of the present invention. FIG. 2 is an explanatory view showing a centering method using the centering apparatus of the present invention. FIG. 3 is a front view showing a state in which the centering device of the present invention is mounted on an electromagnet device which is a centering target device. FIG. 4 is a plan view showing the configuration of the centering device of the second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, the electromagnet device 20 to be centered in Example 1 will be described. FIG. 3 is a front view showing a state in which the centering device 10 of the present invention is mounted on the electromagnet device 20 which is a target device for centering. The electromagnet device 20 includes four electromagnets 21 that surround a central space and face in different directions by 90 degrees, and the outer sides 22 of the magnetic cores 23 of the electromagnets 21 are connected to each other. The end 24 has a semi-cylindrical shape (convex curved surface, cylindrical side shape).

  The end portions 24 are arranged at the same distance from the central axis of the electromagnet device 20 and at the same angle with each other (the center angle formed with the adjacent end portions is 90 degrees). The position of the central axis 25 of the space defined by the projection (end of the kamaboko-like projection). As shown in FIG. 3, the centering device 10 of the present invention has a central space portion of the electromagnet device 20 by aligning the flat portion 11 on the side surface of the substantially cylindrical centering device 10 with the end portion 24 of the magnetic core 23. It is configured so that it can be inserted into.

  FIG. 1 is a plan view, a side view, and a sectional view showing the configuration of the centering device of the present invention. In addition, the lower right half of FIG. 1 has shown the AB cross section. The centering device 10 of the present invention is a hollow, generally cylindrical shape whose radius is slightly longer than the shortest distance between the projection of the end portion 24 of the electromagnet device 20 and the center, and the outer surface is equiangular (90 degrees). Flat surfaces 11 are provided at a plurality of (4) locations. The flat surface 11 corresponds to the protrusion of the end portion 24 of the electromagnet device 20 at a position where the distance from the central axis is slightly shorter than the shortest distance between the protrusion and the central axis (D in FIG. 2). It corresponds to a plurality of planes arranged so as to intersect perpendicularly to the perpendicular line from the shortest position (C in FIG. 2) to the central axis on the protrusion to the central axis of the centering device.

  Further, at one end (opening) of the centering device 10, a wire 13, which is a guide means (= target) whose intersection points indicate the position of the center axis of the centering device, is stretched in a cross shape. . The diameter of the metal wire may be, for example, 0.1 mm. Further, transparent resin plates 15 and 17 are fixed to both ends of the centering device 10 with screws 16 in order to protect the wires 13. The central portions of the resin plates 15 and 17 are opened so that the intersection (A) 25 of the wire 13 indicating the position of the central axis can be directly seen from the outside. The wire 13 passes through a groove 12 provided on the side surface of the centering device 10 in parallel with the central axis, and is fixed to the opposite end portion with a screw 14.

  The outer surface in the vicinity of the end opposite to the end where the wire 13 of the centering device 10 is disposed is provided with a non-slip twill knurled surface so that the user can easily operate it by hand. The grip portion 18 is formed.

  In addition, you may provide the cross-shaped target means by a wire only in the edge part on the opposite side, or both ends. Also,. You may provide instruction | indication means other than the cross by a wire, such as drawing the guide line which shows the position of a central axis in the transparent resin plates 15 and 17. FIG.

  FIG. 2 is an explanatory view showing a centering method using the centering apparatus of the present invention. First, as shown in FIG. 2A, the centering device 10 is placed in the center space of the electromagnet device 20 so that the protrusion 24 of the electromagnet device 20 as the centering target device and the flat surface 11 of the centering device face each other. Insert inside. Note that the position and orientation immediately after insertion are arbitrary.

  The distance a between the plane 11 and the central axis 25 is c> b> a, where b is the shortest distance between the protrusion of the end 24 of the electromagnet device 20 and the central axis 25 and c is the radius of the centering device 10. Yes. Specifically, when b is approximately 34 mm, a may be approximately 33.7 mm and c may be approximately 35 mm. The inserted centering device 10 can rotate only within a certain angle range (for example, ± 5 degrees).

  Next, the grip portion 18 of the centering device 10 is pinched by hand and a force for moving the centering device 10 in a direction perpendicular to the center axis 25 is applied while applying torque to the centering device 10 so as to rotate about the center axis 25. Further, the direction of this force is sequentially changed in a direction opposite to the direction of torque in a plane perpendicular to the central axis 25.

  That is, in FIG. 2, for example, the torque R is applied in the counterclockwise direction, and the direction of the force to move in the direction perpendicular to the central axis 25 is clockwise as right S → down T → left U → upper V → right S →. Change continuously. Then, when there is a gap between any one of the protrusions 24 and the flat surface 11, the centering device 10 sequentially moves clockwise in the direction perpendicular to the central axis 25 and the torque R is applied. The centering device 10 slightly rotates counterclockwise around the central axis 25 every time it moves.

  When the direction of the force that the user moves in the direction perpendicular to the center axis is changed clockwise from right S → down T → left U → upper V → right S →..., The centering device 10 moves the center axis. As the center rotates little by little, the gap between the projection 24 and the flat surface 11 gradually narrows according to this rotation. Finally, as shown in FIG. Stops spinning. This state is a centering state, and the centering device 10 is maintained in this centering state by friction even if the user releases his hand from the centering device 10. When removing the centering device 10, torque can be applied in the opposite direction to create a gap, which can be easily pulled out.

  As a result of experiments by the inventor, it was confirmed that the movement and rotation are always stopped at the same centering position after the above-described centering operation even if the inserted centering device 10 is at an arbitrary initial position. Therefore, the user can easily and accurately adjust the relative positions of the electromagnet device 20 and the other device so that the central axis 25 of the electromagnet device 20 indicated by the intersection of the wires 13 matches the central axis of the other device or tube. can do. In addition, the rotation direction which applies a torque may be any.

  FIG. 4 is a plan view showing the configuration of the centering device of the second embodiment of the present invention. In the first embodiment, the example in which the end 24 of the magnetic core of the electromagnet device 20 is a semi-cylindrical protrusion has been described. However, when the end 30 is a plane perpendicular to the central axis direction, the embodiment is described. With the configuration of 1, centering cannot be performed. The second embodiment is an embodiment suitable for the case where the end 30 of the magnetic core of the electromagnet device 20 is a plane perpendicular to the central axis direction.

  The second embodiment is different from the first embodiment in that the flat surface 11 in the first embodiment is a protrusion 32 (convex curved surface, cylindrical side surface shape = kamaboko shape) in the second embodiment. In the embodiment shown in FIG. 2, the protrusion 32 has a cylindrical side shape, and the radius of the cylindrical shape is several times the shortest distance b between the plane of the end 30 of the electromagnet device 20 and the central axis 25.

  In the second embodiment, the relationship between the protrusion of the magnetic core end portion 24 and the flat surface 11 of the centering device 10 in the first embodiment is exchanged. Also in the second embodiment, the shortest position of the end 30 with respect to the central axis is the position shown in FIG. 4E, and the centering device 31 moves the position shown in FIG. 4 (the center of the circle forming the protrusion 32 and the central axis 25). The gap is the widest when the connecting line is at the position passing through the shortest position (E) of the end portion 30. The gap gradually narrows as the centering device 31 is rotated in either direction from this position.

  Therefore, the second embodiment is functionally the same as the first embodiment, and the centering method is the same as the first embodiment. In the first embodiment as well, the configuration of the second embodiment needs to be adopted when the radius of the semi-cylindrical protrusion at the end 24 of the magnetic core of the electromagnet device 20 is large and close to a plane. Further, the second embodiment can be used for centering a duct having a square cross section.

  Although the embodiments have been disclosed above, the following modifications are also conceivable in the present invention. In the embodiment, an example in which the outer shape of the centering device is substantially cylindrical and the cross section is a circle is disclosed. However, the outer diameter of the centering device may be a rectangular parallelepiped as long as there is a space that can be inserted.

  In the embodiment, an electromagnet device having four magnetic core ends is used as a centering target device. Therefore, an example in which four planes 11 are provided at equal angles is disclosed. However, the number of planes 11 is the same as the configuration of the centering target device. The present invention can be implemented with any corresponding number of four or more. In this case, the centering device may be a regular polygonal column.

  The centering device and the centering method of the present invention can be applied to centering of any device having a space in the center.

DESCRIPTION OF SYMBOLS 10 ... Centering apparatus 11 ... Plane 12 ... Groove 13 ... Wire 14, 16 ... Screw 15, 17 ... Transparent board 18 ... Grip

Claims (4)

A centering device for obtaining a position of a central axis of a space defined by a plurality of protrusions or planes arranged at an equal distance from each other and at an equal angle from a central axis of a centering target device,
Corresponding to the projection or plane, the distance from the central axis is slightly shorter than the shortest distance between the projection or plane and the central axis, and from the shortest position to the central axis on the projection or plane. A plurality of planes or protrusions arranged so as to intersect perpendicularly to the perpendicular line to the central axis of the centering device;
A centering device comprising guide means for indicating the position of the central axis of the centering device. The centering device is a hollow, substantially cylindrical shape having a radius slightly longer than the shortest distance between the projection or plane and the central axis, and the plurality of planes or projections are formed at equal angles on the side surface of the cylinder. Has been
The centering device according to claim 1, wherein a cross target indicating a position of a central axis of the centering device constituted by a thin wire is attached to one end of the cylindrical shape. The centering target device is an electromagnet device in which four electromagnets are arranged around the central space,
The centering device according to claim 1, wherein the plurality of protrusions are four magnetic cores having end-shaped shapes. A centering method for obtaining a position of a central axis of a space defined by a plurality of protrusions or planes arranged at an equal distance from each other and at an equal angle from a central axis of a centering target device,
Corresponding to the projection or plane, the distance from the central axis is slightly shorter than the shortest distance between the projection or plane and the central axis, and from the shortest position to the central axis on the projection or plane. A centering device comprising a plurality of planes or protrusions arranged so as to intersect perpendicularly to a perpendicular line to the center axis of the centering device, and guide means for indicating the position of the center axis of the centering device. Inserting the centering device into the space so that the projection or plane of the centering target device and the plane or projection of the centering device face each other;
While applying torque to the centering device so as to rotate about the central axis, a force for moving in a direction perpendicular to the central axis is applied, and the direction of the torque is set in the plane perpendicular to the central axis. Includes a step of sequentially changing in the reverse direction.

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