JPH0127872B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rail type parallel displacement positioning device for a head such as a rail type universal parallel ruler device.

In order to lighten the movement of the vertical rail of this device, magnets are placed on the horizontal rail side and the horizontal cursor side, and the repulsive force of these magnets biases the horizontal cursor in the direction of floating relative to the horizontal rail. The applicant has developed a configuration in which However, in the above configuration, if the positions of the opposing magnets do not overlap accurately, the loss of magnetic force will increase. This loss has been reduced by achieving manufacturing precision, but achieving this precision has not been easy. The main objective of the invention is to eliminate the above deficiencies.

Another object of the present invention is to ensure that the magnets on the horizontal cursor side and the magnets on the horizontal rail side overlap each other accurately, and to easily adjust the perpendicularity of the vertical rail to the horizontal rail.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to an embodiment of a rail type universal parallel ruler device shown in the accompanying drawings.

2 is a drawing board, 4 is a fixture 6, 8 on the upper edge of the drawing board 2.
As shown in FIG. 4, horizontal rail surfaces 10, 1 are
2 and vertical rail surfaces 14 and 16 are formed.
18 is a horizontal cursor, which has a plurality of vertically oriented rollers 20, a plurality of vertically oriented safety rollers 22,
A plurality of horizontal rollers 24 and a plurality of horizontal rollers 26 are rotatably supported. The vertical rollers 20 are in contact with the horizontal rail surface 10, the horizontal rollers 24 are in contact with the vertical rail surface 14, and the horizontal rollers 24 are in contact with the vertical rail surface 14.
6 is in contact with the vertical rail surface 16, and the safety roller 2
2 are arranged directly above the horizontal rail surface 12 to face each other. 28 is a support member, and these side wall parts 3
0, 32 is the rising portion 18a of the horizontal cursor 18
Then, the horizontal rail 4 is moved by the pivot shafts 34 and 36.
They are rotatably connected around an axis parallel to the . The flat plate portion of the support member 28 is provided with holes 38, 40, and 42 for shaft insertion, and a protruding portion 44 having a tapered surface. A filling member for inserting a cap screw is fitted and fixed in the hole 38, and a hole 46 is formed in the member. The protrusion 4
4 has a transparent hole 48 for the shaft. 50 is a plate member, and mounting portions 52, 5 formed on this plate member.
1 has a hole 56 and a long hole 58 formed therein. A groove is formed in the lower surface of the plate member 50, and a magnet member 60 consisting of a plurality of elongated magnetic rubbers having a rectangular cross section is fitted and fixed into the groove. is exposed to the outside in the state of NSNSNSNS from the right in Figure 4. 62 is a bracket, and its mounting portion 6
4 and 66, one end portion of a vertical rail 68 is fixed. A fitting recess 70 having a tapered surface is formed at the bottom of the bracket 62.
A hole 72 for the shaft is opened in the center. 74
is a long hole transparently provided at the bottom of the bracket,
A large diameter hole for inserting a nut is formed in the upper part of this. 76, 78 are cap screws, 80,
82 is a nut, 84 and 86 are shafts, which include cylindrical shaft portions 84a and 86a, flanges 84b and 86b,
It has eccentric screw portions 84c, 86c that are eccentric with respect to the shaft portions 84a, 86a. 88 and 90 are nuts. Reference numeral 92 denotes a magnet member consisting of a plurality of elongated magnetic rubbers fitted into a groove formed over the entire length of the horizontal rail 4, and its magnetic pole surface is in the state of NSNSSNS from the right in FIG. 4. exposed to the outside. A cover member 94 is fixed to the tail portion of the vertical rail 68, and a magnet member (not shown) is fixed to this cover member. A fixed rail 96 is disposed at the lower edge of the drawing board 2 over the entire width thereof, and a magnet member is fixedly installed over the entire length of the upper surface of the fixed rail in the longitudinal direction. A vertical cursor 98 is movably attached to the vertical rail 68, and a head 102 is attached to this via a known connecting member 100. Head 102
Straightedges 104 and 106 are removably fixed to the mounting plate.

Next, the operation of this embodiment will be explained.

First, the magnet 6 is placed on the flat plate portion of the support member 28.
2 and the plate member 50 are placed, and the holes 56, 46, 72 are
and 48, 74 and 40, and 58 and 42, and the fitting recess 70 is rotatably fitted into the protrusion 44. Next, insert screws 7 into holes 56 and 46, 72 and 48, 74 and 40, and 58 and 42, respectively, as shown.
6, 78 and shafts 84, 86, respectively.
The nuts 80, 82, 88, and 90 are screwed together to temporarily fix the plate member 50 and the magnet 62 on the support member 28. In this state, the magnet member 6
The eight magnetic pole tracks of 0 are the magnetic member 92.
When the same polar planes are not exactly parallel and opposite to the eight magnetic pole tracks, the magnetic member 60
Finely adjust the position. In this case, nuts 80,
90 is loosened, and the tip of the L rod is fitted into the rotation groove formed at the upper end of the eccentric screw portion 86c of the shaft 68, and the shaft 86 is rotated. Due to this rotation, the eccentric screw portion 86c is displaced in the vertical direction in FIG. It rotates slightly around the screw 76 in a plane parallel to the magnetic pole track plane. When the magnet member 60 becomes exactly parallel to the magnet member 92 by rotating the shaft 86, the nuts 80, 90 are tightly screwed into the screw 76 and the threaded portion 86c to fix the plate member 50 to the support member 28. do. Next, when adjusting the vertical rail 68 at right angles to the horizontal rail 4, tighten the nut 8.
2, 88, rotate the shaft 84 by the L bar, rotate the bracket 62 around the screw 78, and when the vertical rail 68 is exactly perpendicular to the horizontal rail 4, tighten the nut. 82 and 88 are tightly screwed onto the screw 78 and the screw shaft 84c to fix the bracket 62 to the support member 28. In this state, the horizontal cursor 18 moves between the magnetic members 92 and 6.
Due to the repulsive magnetic force acting between
It floats a predetermined distance relative to the fixed rail 96 due to the repulsive force of the magnetic force. In addition, the tail side of the vertical rail 68 is
It may be placed so as to be freely movable on the second surface of the drawing board via the tail rollers. In addition, the horizontal cursor 18 is
It may be completely floated with respect to the running surface of the horizontal rail 4, or it may not be floated. In this embodiment, the horizontal cursor is biased in the floating direction using the repulsive force of the magnet, but it may be biased in the floating direction using the attractive force of the magnet. Furthermore, the mounting positions of the magnet members 92 and 60 are not particularly limited to the locations shown in the drawings. In the above configuration, hold the handle of the head 102 with your hand and press the drawing board 2.
When you press left and right along the surface, horizontal cursor 1
8 and a vertical rail 68 connected thereto move in the left-right direction along the drawing board 2. Magnetic member 92
Since the rotational friction between the rollers on the horizontal cursor 18 side and the horizontal rail 4 is drastically reduced due to the repulsive magnetic force between the horizontal cursor 18 and the horizontal rail 4, the above-mentioned movement is performed smoothly with extremely light force.
As is clear from the above description, the support member 2
8, plate member 50, hole 38, hole 56, cap screw 76, nut 80, hole 42, shaft 86, long hole 58,
The nut 90 constitutes a fine adjustment mechanism for finely adjusting the position of the magnetic member on the horizontal cursor side in the rotational direction within a plane parallel to the plane of the magnetic member on the horizontal rail side. Bracket 62, protrusion 44, recess 70, cap screw 78, nut 82, hole 40, elongated hole 74, shaft 8
4. The nut 88 constitutes a rotation adjustment mechanism for adjusting the rotation of the vertical rail toward the horizontal cursor within a plane parallel to the drawing surface.

Since the present invention is configured as described above, it is possible to efficiently utilize the magnetic energy in the direction in which the horizontal cursor floats with respect to the running surface of the horizontal rail, and moreover, the vertical rail can be adjusted at right angles to the horizontal rail. Therefore, there is an effect that operations such as accurate drawing can be performed extremely smoothly.

[Brief explanation of drawings]

The drawings show a preferred embodiment of the present invention, in which FIG. 1 is an overall plan view, FIG. 2 is a plan view of the main part, FIG. 3 is a sectional view of the main part, and FIG. 4 is a side view of the main part. FIG. 5 is an exploded perspective view of the main parts. 2...Drawing board, 4...Horizontal rail, 6, 8...Fixing tool, 1
8... Horizontal cursor, 28... Support member, 30, 32...
Side wall portion, 34, 36... Pivot shaft, 50... Plate member, 60... Magnet member, 62... Bracket,
68... Vertical rail, 92... Magnetic member, 94...
Cover member, 96... Fixed rail, 98... Vertical cursor, 100... Connection member, 102... Head, 10
4,106...Straight ruler.

Claims (1)

[Claims] 1. A horizontal rail, a horizontal cursor movably attached to the horizontal rail, a vertical rail connected to the horizontal cursor, and a horizontal cursor movably attached to the vertical rail. In the device, a magnetic member is disposed on the horizontal rail side and parallel to the horizontal rail over the entire movement range of the horizontal cursor, and a magnetic member opposite to the magnetic member is attached on the horizontal cursor side. Due to the magnetic force acting between both magnet members, the horizontal cursor is
The horizontal rail is biased in the direction of floating with respect to the cursor running surface, and the position of the magnetic member on the horizontal cursor side is adjusted in the rotational direction within a plane parallel to the plane of the magnetic member on the horizontal rail side. A rail-type parallel movement positioning device for a head, characterized by being provided with a fine adjustment mechanism for fine adjustment. 2. A device consisting of a horizontal rail, a horizontal cursor movably attached to the horizontal rail, a vertical rail connected to the horizontal cursor, and a head movably attached to the vertical rail. A magnetic member is disposed on the side of the horizontal rail in parallel thereto over the entire movement range of the horizontal cursor, a magnetic member opposite to the magnetic member is installed on the side of the horizontal cursor, and the magnetic member acts between the two magnetic members. Due to magnetic force, the horizontal cursor is
The horizontal rail is biased in a direction in which it floats relative to the cursor running surface, and the position of the magnetic member on the horizontal cursor side is slightly moved in the rotational direction within a plane parallel to the plane of the magnetic member on the horizontal rail side. In addition to providing a fine adjustment mechanism for adjustment,
A rail-type parallel movement positioning device for a head, characterized in that a rotation adjustment mechanism is provided for rotationally adjusting the vertical rail in a plane parallel to the drawing surface with respect to the horizontal cursor side.