JPH0420633Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vertical rail square adjustment device in a rail-type flexible parallel ruler or a coordinate measuring machine.

[Conventional technology]

As this type of apparatus, those shown in Japanese Utility Model Publication No. 7799/1983, Japanese Patent Publication No. 31054/1982, and Japanese Patent Publication No. 89997/1988 are known. All of these devices include a vertical rail square adjustment device separate from the hinge mechanism that rotatably connects the vertical rail to the horizontal cursor. Furthermore, the device disclosed in Japanese Utility Model Publication No. 10836/1983 uses eccentric screws to adjust the vertical rails at right angles.

[Problem that the invention attempts to solve]

However, if a right angle adjustment device is provided separately from the hinge mechanism, the number of parts will increase, resulting in an increase in cost. In addition, in the case of a right-angle adjustment device using an eccentric screw, when the vertical rail is adjusted at right angles by rotating the eccentric screw, the vertical rail rotates around its longitudinal axis, which causes the bottom surface of the vertical rail to align with the top surface of the mounting table. It will be tilted against. When the vertical rail is tilted, the adhesion of the head to the top surface of the mounting table deteriorates, and an uneven load is placed on the guide roller of the balance weight that can freely run along the vertical rail, making the rotation of the roller heavier and causing the roller to rotate more slowly. This had a negative effect on the durability.

SUMMARY OF THE INVENTION The object of the present invention is to provide a vertical rail vertical adjustment device that eliminates the above-mentioned defects.

[Means to solve problems]

In order to achieve the above object, the present invention connects a pair of mounting plates 12 and 14 attached to both sides of the upper part of the vertical rail 8 to the horizontal cursor 6 so as to be rotatable about an axis parallel to the horizontal rail 4. In a rail type flexible parallel ruler etc., the upper part of the pair of mounting plates 12 and 14 is attached to the vertical rail 8.
The mounting plates 12 and 14 are rotatably attached to both upper sides of the horizontal cursor 6, and the rotating parts of the mounting plates 12 and 14 relative to the horizontal cursor 6 are arranged in the lower part of the center of rotation that is substantially perpendicular to the longitudinal direction of the vertical rail 8. It is.

[Effect]

Therefore, if the mounting plates 12 and 14 are rotated in opposite directions along both sides of the vertical rail 8,
The angle formed by the opposing axis L2 of the rotating part of the mounting plates 12, 14 with respect to the horizontal cursor 6 with respect to the longitudinal center axis L1 of the vertical rail 8 is determined by the fitting holes 24, 2.
This can be changed without a large vertical movement of the vertical rail 6, and thereby the perpendicularity of the vertical rail 8 to the horizontal rail 4 can be adjusted.

〔Example〕

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

2 is a mounting plate; 4 is a horizontal rail fixed to one side of the mounting plate 2 with a vise; a horizontal cursor 6 is movable on the horizontal rail 4 via rollers (not shown); is connected to. At the rising portion of the horizontal cursor 6, shaft bodies 10, 10a are provided to protrude in a direction parallel to the longitudinal direction of the horizontal rail 4. 12,1
Reference numeral 4 denotes a mounting plate, and two holes 16, 18, 20, and 22 are transparently provided in the upper part of each plate. Narrow fitting holes 24, 26 are bored in the lower portions of the mounting plates 12, 14. Corresponding to the holes 16, 18, 20, 22, screw holes 28, 30, 32, 34 are provided in the upper side walls of the vertical rail 8.
is transparent. The screw holes 28, 30, 32,
Mounting screws 36, 38, 40, which are screwed into 34,
For the shaft diameter of 42, the holes 16, 18, 20, 2
The diameter of No. 2 is set to be larger by a predetermined amount. The mounting screws 36, 38, 40, 42 are inserted into the screw holes 28, 30, 3 on both side walls of the vertical rail 8 through the holes 16, 18, 20, 22 in the mounting plates 12, 14.
2, 34, and the screws 36, 38, 40, 4
2, the mounting plates 12, 14 are fixed to the vertical rail 8. The fitting holes 24 and 26 of the mounting plates 12 and 14 fit into the shaft bodies 10 and 10a, thereby connecting the vertical rail 8 to the horizontal cursor 6. The shaft bodies 10, 1 of the fitting holes 24, 26
The position of the part that contacts 0a is the screw 36, 3
The mounting plate 1 when 8, 40, 42 are loosened
It is set approximately directly below the axis L3 perpendicular to the longitudinal axis L1 of the vertical rail 8, with reference to the pivot rotation centers 44 and 46 of the vertical rails 8 of No. 2 and 14. The rotation center 44 is
As shown in FIG. 4, when the shafts of the screws 16, 18 are positioned at the centers of the holes 16, 18
It is assumed to be in the middle position of 8. The above rotation center 46
The same is true. In addition, the mounting plate 1 is attached to the mounting plates 12 and 14 side or the rising part side of the horizontal cursor 6.
A releasable slip-off prevention mechanism may be provided to prevent the shafts 2 and 14 from coming off the shafts 10 and 10a.
44 is a tail roller, and 46 is an operating head.

Next, the operation of this embodiment will be explained.

When adjusting the perpendicularity of the vertical rail 8 to the horizontal rail 4, loosen the screws 36, 38, 40, 42 in the screw holes 28, 30, 32, 34. As a result, the mounting plates 12, 14 are attached to the screws 36, 38,
Due to the looseness of the holes 16, 18, 20, 22 relative to the rails 40, 42, it becomes possible to swing and rotate with respect to both sides of the vertical rail 8. If you want to tilt the vertical rail 8 in the direction of the hour hand in FIG.
is rotated counterclockwise relative to the vertical rail 8 as shown by the dotted line in FIG.
Further, the fitting hole 24 is slightly moved to the left in FIG. Thereafter, the mounting plates 12, 14 are fixed to the vertical rail 8 by tightly screwing the screws 36, 38, 40, 42 into the screw holes 28, 30, 32, 34. As a result, the longitudinal center axis L1 of the vertical roll 8
Since the opposing axes L2 of the fitting holes 24 and 26 are inclined in the counterclockwise direction in FIG.
is slightly adjusted in the direction of the hour hand in FIG. 2 based on the previous state. When you want to adjust the angle of the vertical rail 8 in the direction of the hour hand, rotate the mounting plate 14 in the direction of the hour hand in FIG. 12 as the third
In the figure, the fitting hole 24 may be shifted to the right by rotating in the opposite direction. As described above, the positions of the portions of the fitting holes 24, 26 that come into contact with the shaft bodies 10, 10a are the same as those of the vertical rails of the mounting plates 12, 14 when the screws 36, 38, 40, 42 are loosened. Since it is set approximately directly below the axis L3 perpendicular to the longitudinal axis L1 of the vertical rail 8 with respect to the swing rotation centers 44, 46 for the mounting plates 12, 14 as a reference, the longitudinal axis of the mounting plates 12, 14 is The rotational displacement about the rotation centers 44, 46 along both side surfaces of the rail 8 corresponds to the vertical displacement of the portions of the fitting holes 24, 26 that contact the shafts 10, 10a, that is, along the axis L3. Almost no displacement occurs. Therefore, when adjusting the vertical rail 8,
There is no possibility of tilting with respect to the two surfaces of the mounting table. Note that the structure for attaching the mounting plates 12 and 14 to the vertical rail 8 so as to be rotatable within a predetermined range includes holes 16 having a diameter larger than the shaft diameter of the screws 36, 38, 40, and 42, as shown in the embodiment. 18, 20, 22, as shown in FIG.
2, 14 along the assumed circular line.
8, 50 are provided through the holes 48, 50, and screws 36,
The shaft portions 38, 40, and 42 may be slidable. In this structure, the center of rotation of the mounting plates 12, 14 relative to the vertical rail 8 is the center point O of the circular line. The fitting holes 24 and 26 constitute rotating parts of the mounting plates 12 and 14 relative to the horizontal cursor 6.

[Effects] Since the present invention is configured as described above, there is an effect that the vertical rail can be adjusted at right angles without almost any rotation of the vertical rail in a direction inclined with respect to the mounting table surface.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is an overall front view, Fig. 3 is a side view, Fig. 4 is an explanatory view, and Fig. 5 is an explanatory view. . 2...Placement plate, 4...Horizontal rail, 6...Horizontal cursor, 8...Vertical rail, 10, 10a...Shaft body,
12, 14...Mounting plate, 16, 18, 20,
22... Hole, 24, 26... Fitting hole, 28, 3
0, 32, 34...screw hole, 36, 38, 40,
42..., 44, 46...Rotation center, 45...Head.

Claims (1)

[Scope of utility model registration request] In the rail-type flexible parallel ruler, etc., in which a pair of mounting plates 12 and 14 attached to both upper sides of the vertical rail 8 are connected to the horizontal cursor 6 so as to be rotatable about an axis parallel to the horizontal rail 4, The upper parts of the pair of mounting plates 12 and 14 are rotatably attached to both sides of the upper part of the vertical rail 8,
A downward axis L that is substantially perpendicular to the longitudinal direction of the vertical rail 8 and passes through the center of rotation of the pair of mounting plates 12 and 14 with respect to both sides of the vertical rail 8.
3 above the horizontal cursor 6 on the mounting plates 12, 14
A perpendicularity adjustment device for a vertical rail in a rail-type flexible parallel ruler, etc., characterized in that a rotating part is arranged for the vertical rail.