JPH0420632Y2 - - 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 device, those shown in Japanese Utility Model Publication No. 7799/1983, Japanese Patent Publication No. 31054/1982, and Japanese Patent Application Laid-open No. 89997/1989 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. A rail type flexible parallel ruler or the like is provided with a fine adjustment mechanism for finely adjusting the mounting plates 12 and 14 along the longitudinal direction of the vertical rail 8.

[Effect]

Therefore, if the mounting plates 12 and 14 are slightly moved in opposite directions along both sides of the vertical rail 8,
It is possible to change the angle formed by the axis L2 of the rotating part of the mounting plates 12, 14, which faces the horizontal cursor 6, with respect to the longitudinal center axis L1 of the vertical rail 8. The perpendicularity to 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. Note that the mounting plates 12, 14 are attached to the mounting plates 12, 14 side or to the rising part side of the horizontal cursor 6.
A releasable slip-off prevention mechanism may be provided to prevent the shaft from coming off the shaft bodies 10, 10a. 43 is a tail roller, and 45 is an operating head.

Next, the operation of this embodiment will be explained.

To adjust 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. When it is desired to tilt the vertical rail 8 in the direction of the hour hand in FIG. It moves slightly towards the top of 8.
Then, the mounting plate 12 is slightly moved downward in FIG. 2 along the side surface of the vertical rail 8. After that, insert the screws 36, 38, 40, 42 into the screw holes 28, 30, 3.
2, 34 tightly and attach the mounting plate 12, 1.
Fixed at 4. As a result, the opposing axes L2 of the fitting holes 24 and 26 with respect to the longitudinal central axis L1 of the vertical rail 8 are inclined in the counterclockwise direction, so that the vertical rail 8 is slightly moved in the direction of the hour hand with respect to the previous state. When you want to adjust the angle of the vertical rail 8 in the counterclockwise direction,
According to the procedure described above, the mounting plate 14 may be shifted downward along the longitudinal direction of the vertical rail 8, and the mounting plate 12 may be shifted upward along the longitudinal direction of the vertical rail 8. The movement of the mounting plates 12, 14 along the longitudinal direction of the vertical rail 8 is not accompanied by the movement of the mounting plates 12, 14 along the lateral direction of the side surface of the vertical rail 8. There is no tilting with respect to the two surfaces of the mounting table during adjustment.
The fine adjustment mechanism that allows fine adjustment of the attachment position of the mounting plates 12 and 14 to the vertical rail 8 along the longitudinal direction of the vertical rail 8 is based on the shafts of the screws 36, 38, 40, and 42 shown in the embodiment. It is not limited to holes 16, 18, 20, 22 having a larger diameter than that of the mounting plate 1, as shown in FIG.
Elongated holes 46 and 48 may be formed through the holes 2 and 14. Said screws 36, 38, 40, 42, hole 1
6, 18, 20, 22 or the elongated holes 46, 48 and the screw holes 28, 30, 32, 34 constitute the fine adjustment mechanism.

〔effect〕

Since the present invention is configured as described above, there is an advantage that the vertical rail can be adjusted at right angles without being accompanied by rotation of the vertical rail in a direction that is 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, 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, A vertical rail right angle adjusting device characterized in that a fine adjustment mechanism for finely adjusting the mounting plates 12 and 14 along the longitudinal direction of the vertical rail 8 is provided at a connecting portion between the mounting plate and the vertical rail.