JPH0569719B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rail type universal parallel ruler device.

Disclosed in the conventional Japanese Utility Model Publication No. 54-11748,
In the rail type universal parallel ruler device, the perpendicular adjustment of the vertical rail with respect to the horizontal rail is performed by assembling the parts of the rail type universal parallel ruler once in the factory to form a completed product, and then using a measuring instrument to adjust the vertical rail to the horizontal rail. The vertical rails are adjusted perpendicularly to the transverse rails by means of a vertical adjustment device provided on the vertical bracket connected to the top, and the vertical adjustment device is then fixed. This straight-adjusted rail-type flexible parallel ruler is stored at the factory with the horizontal rail, vertical rail, head, and other parts removed.

When the user reassembles the above-mentioned parts, the perpendicularity of the vertical rail to the horizontal rail has already been adjusted in the factory, so the vertical rail becomes perpendicular to the horizontal rail.

There is also a rail-type flexible parallel ruler in which the above-mentioned orthogonal adjustment device is provided on the horizontal cursor.

However, in any case, the perpendicular adjustment of the vertical rail is
Each part of the rail-type flexible parallel ruler must be assembled in a factory to form a finished product, which is difficult to assemble and requires a large amount of space.

Furthermore, when storing a rail-type flexible parallel ruler after squareness adjustment in the factory with each part removed, each of these parts must be stored as one set.

In other words, it is not possible to replace a certain part of the rail type flexible parallel ruler after orthogonality adjustment, for example, a horizontal cursor, with another horizontal cursor of the same type, and if another part is replaced, the vertical rail I had to readjust the squareness.

Therefore, in the factory, after vertical rail alignment adjustment, it is not possible to store each part such as the vertical rail, horizontal rail, cursor, head, etc. separately, and it is necessary to store them as one set. However, there was a drawback that product management was not easy.

The present invention is configured so that the vertical rail can be adjusted at right angles to the horizontal rail even when the vertical rail is not connected to the horizontal rail as a finished product, that is, when the horizontal rail and the vertical rail are separated. Therefore, the purpose is to eliminate the above-mentioned defects.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail below based on embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a drawing board, and 4 a horizontal rail, which is removably fixed to the drawing board 2 by a vise-type fixture 6.

8 is a horizontal cursor, and the surfaces of three vertical rollers 10 rotatably attached to this cursor are located between the horizontal rail surfaces 14 and 12 of the horizontal rail 4 and between the horizontal rail surfaces 14 and 12 of the horizontal rail 4.
It is inserted between 8' and 16.

18 is a horizontal roller rotatably supported by the horizontal cursor 8, and these surfaces are connected to the horizontal rail 4.
It is in contact with the vertical rail surface 20 of.

Reference numeral 24 denotes a support shaft rotatably supported by a tube formed in the horizontal cursor 8, and an inner ring of a horizontal roller 26 made of a ball bearing is fitted into the outer circumference of an eccentric shaft portion 24a formed on this shaft. The surface of the roller 26 is in contact with the vertical rail surface 20 of the horizontal rail 4. A thread is formed in the lower part of the support shaft 24, and a nut 26' is screwed into the thread.

Reference numerals 28 and 30 indicate horizontal rollers made of ball bearings, and each inner ring is connected to a support shaft 32 which is rotatably supported on the tube portion of the horizontal cursor 8, as shown in FIG.
It is fitted onto the outer circumferential surface of the eccentric shaft portion 32a.

A board 34 is fixed to the lower end of the support shaft 32,
The disk 34 is urged in a predetermined rotational direction by a spring 36.

Each surface of the horizontal rollers 28 and 30 is in elastic contact with the vertical rail surface 22 of the horizontal rail 4.

A shaft body 38 is fixed to the horizontal cursor 8 . 40 is a vertical rail, and an upper bracket 42 is fixed to the upper end of this rail.

Reference numeral 44 designates a lower bracket to which an engaging member 46 is attached.
It is rotatably fitted to the

48 is a retaining member rotatably supported by the lower bracket 44, and the member 48 is
The spring biases the retaining member 48 in the direction of rotation of the hour hand in FIG.

One of the upper brackets 42 has a shaft 50 rotatably attached to the lower bracket 44, as shown in FIG.
The upper bracket 42 has a hole 52 in the other side.
is transparent.

A bolt 54 is loosely fitted into the hole 52, and is screwed into a threaded hole provided in the lower bracket 44.

In addition, in the figure, 56 is the head, 58 is the tail roller, 4
9 is a leaf spring, and 60 is a guide rail fixed to the drawing board 2 by a vise-type fixture.

Next, the operation of this embodiment will be explained.

First, a case will be described in which the longitudinal center axis of the shaft body 38 is adjusted to be parallel to the longitudinal center axis of the horizontal rail 4.

In this case, from the opening at one end of the horizontal rail 4 to the horizontal rail surfaces 12 and 14 of the horizontal rail 4 and between the horizontal rail surfaces 16 and 16,
The vertical rollers 10 of the horizontal cursor 8 are inserted and placed between 18 and the horizontal rollers 18 and 26 are brought into contact with the vertical rail surface 20. At this time, the horizontal roller 28, 30
Then, each plate 34 is rotated so as to be furthest away from the vertical rail surface 22, and the plate 34 is held in place at the rotated position by a holding plate 62 made of a spring. next,
The measuring needle of a micrometer (not shown) positioned at a predetermined position is brought into contact with both ends of the shaft body 38, and while observing the instructions on the micrometer, the nut 26' is loosened and the shaft body 24 is rotated to rotate the shaft body 24 horizontally. 26 is slightly moved in the left and right direction in FIG. Fine adjustment is made within a parallel plane, and when the shaft body 38 is parallel to the horizontal rail 4, the support shaft 2
4 is stopped, and the support shaft 24 is fixed to the horizontal cassole 8 by tightening the nut 26'. The parallel adjustment described above can be performed without the vertical rail 40 being assembled to the horizontal cursor 8.

Next, a case will be described in which the longitudinal center axis of the vertical rail 40 is adjusted to be perpendicular to the center axis of the shaft 38, that is, the center axis of the shaft fitting portion of the engaging member 46. A shaft for right angle adjustment having the same dimensions as the shaft 38 is fixed in a predetermined position, and the tapered surface of the engagement member 46 of the lower bracket 44 is fitted onto this shaft. Next, the bolt 54 is loosened, and the upper bracket 42 is slightly moved about the shaft 50 in a plane parallel to the two surfaces of the drawing board, so that the side surface of the vertical rail 40 coincides with a predetermined reference plane. This reference plane is set perpendicular to the central axis of the shaft body for orthogonal adjustment, that is, the shaft body fitting portion of the engaging member 46. If the direction of the central axis of the shaft when the shaft is fitted into the shaft fitting portion of the engaging member 46 is defined as the axial direction of the engaging member 46,
By the above adjustment work, the longitudinal direction of the vertical rail 40 becomes perpendicular to the axial direction of the engaging member 46.
Next, tighten the bolt 54 and attach the upper bracket 4.
2 is fixed to the lower bracket 44. The above adjustment work can be performed without fixing the horizontal rail 4 to the drawing board 2 and attaching the horizontal cursor 8 to the horizontal rail 4.

Next, the work of assembling the above-mentioned parts into a finished product will be explained.

First, from one end of the horizontal rail 4, the rollers of the horizontal cursor 8 are inserted between the horizontal rail surfaces 12 and 14 and 16 and 18 of the horizontal rail 4, and between the vertical rail surfaces 20 and 22, and then the horizontal rollers 28, The board 34 connected to each of the 30 supporting shafts 32 is set in a free state. As a result, each support shaft 32 of the horizontal rollers 28, 30 is rotated by the spring force, and the horizontal rollers 28, 30 are rotated by the spring force.
Due to the eccentric action of the eccentric portion 32a of each support shaft 32, the horizontal rollers 18, 20 come into elastic contact with the vertical rail surface 22 with a predetermined pressure, and due to the reaction force of this elastic contact force, the horizontal rollers 18, 20 come into elastic contact with the vertical rail surface 20, The horizontal cursor 8 is movably attached to the horizontal rail 4. Next, the horizontal rail 4 and the guide rail 60 are fixed to the drawing board 2 using vise-type fixtures. Next, the head 56 is attached to the vertical rail 40, and in this state, the tapered surface of the engagement member 46 of the lower bracket 44 is fitted to the shaft body 38,
If the inclined surface of the removable member 48 is brought into elastic contact with the lower surface of the shaft body 38, the leaf spring 49 is fitted into the recessed part of the shaft body 38, and the tail roller 58 is placed on the upper surface of the guide rail 60, the rail type is formed. The assembly of the flexible parallel ruler is completed. In this finished product, the shaft 38 is parallel to the longitudinal direction of the horizontal rail 4, and the vertical rail 40 is adjusted at right angles to the axial direction of the shaft 38, that is, the shaft fitting portion of the engaging member 46. Therefore, the vertical rail 40 is set perpendicular to the horizontal rail 4. This relationship is maintained even when other angle-adjusted parts are used. That is, the vertical rail surface 20 of the horizontal rail 4 has the same straightness as any other horizontal rail. Therefore, if the horizontal cursor 8 is connected to one horizontal rail 4, the rollers 26 are adjusted in this state, and the shaft body 38 is set parallel to the longitudinal direction of the horizontal rail 4, the horizontal cursor 8 Even if you remove it from the horizontal rail 4 and connect it to another horizontal rail,
The shaft body 38 of the horizontal cursor 8 becomes parallel to the combined horizontal rails without having to adjust the parallelism again. This means that the horizontal cursor 8 whose parallelism has been adjusted can be connected to any horizontal rail, and the vertical cursor 8 whose perpendicularity has been adjusted can be connected to any horizontal rail.
0 can be combined with any horizontal cursor,
In the assembled finished product, the vertical rails 40 are perpendicular to the horizontal rails 4. That is, the horizontal rail 4, the horizontal cursor 8, and the vertical rail 40 do not need to be stored for each set of finished products, and can be stored separately.

Therefore, each part of the universal parallel ruler does not need to be stored separately for each set;
The same parts can be stored together for each part, such as a horizontal cursor, and a set can be assembled by randomly selecting them from among them as needed.

In addition, as shown in FIG. 6, a shaft body 24 having an eccentric shaft portion 24a and a horizontal roller 2 fitted to the eccentric shaft portion 24a are shown in FIG.
6 and a nut 26', which is screwed into the threaded portion of the shaft body 24 and is used to fix the shaft body 24 to the horizontal cursor 8, are a pair of connecting elements that removably connect the horizontal cursor 8 and the vertical rail 40. The parallelism of one of the shaft bodies 38 to the horizontal rail 4 in the axial direction is shown in drawing board 2.
This constitutes a parallelism adjustment mechanism that can be freely adjusted within a plane substantially parallel to the plane.

In addition, in FIG. 3, the shaft 50, the hole 52, and the bolt 54 can freely adjust the perpendicularity of the vertical rail 40 to the axial direction of the engaging member 46, which is the other one of the pair of connecting elements. This constitutes a squareness adjustment mechanism.

Note that there are various known mechanisms for the perpendicularity adjustment mechanism and parallelism adjustment mechanism, and the structure is not limited to the structure shown in the drawings.

Since the present invention is constructed as described above, the perpendicularity of the vertical rail to the horizontal rail can be adjusted without actually connecting the vertical rail to the horizontal rail, thereby facilitating the perpendicularity adjustment work. I can,
Moreover, a large space is not required for the right angle adjustment work. In addition, it is not necessary to store each part for each set of finished products, but instead it is possible to store each part individually, making parts management extremely easy. This has the advantage that there is no need to repeat the process again.

[Brief explanation of the drawing]

The figures show preferred embodiments of the present invention, with FIG. 1 being an overall plan view of a rail-type universal parallel ruler device, and FIG.
The figure is a sectional view taken along the line A-A in Figure 1, and Figure 3 is a cross-sectional view taken along line A-A in Figure 1.
4 is a plan view of the horizontal cursor, and FIG. 5 is a sectional view taken along the line C-C in FIG. 4.
FIG. 6, which additionally shows the horizontal rail, is a sectional view taken along the line D-D in FIG. 4. FIG. . 2...Drawing board, 4...Horizontal rail, 8...Horizontal cursor, 10...Vertical roller, 18...Horizontal roller,
24... Support shaft, 24a... Eccentric shaft portion, 26... Horizontal roller, 26'... Nut, 28, 30... Horizontal roller, 32... Support shaft, 34... Board, 38...
Shaft body, 40... Vertical rail, 42... Upper bracket, 44... Lower bracket, 50... Axis, 54
...Bolt, 56...Head.

Claims (1)

[Claims] 1. A horizontal rail 4, a horizontal cursor 8 that is movably attached to the horizontal rail 4 via rollers, a shaft body 38, and an engagement member 46 that holds this in a detachable manner.
A vertical rail 40 is detachably connected to the horizontal cursor 8 so as to be able to swing about the central axis of the shaft body 38 by a connecting mechanism consisting of two connecting elements with the horizontal cursor 8. In a rail-type flexible parallel ruler device in which one connecting element of the connecting mechanism is provided on the side of the horizontal cursor 8 and the other connecting element is provided on the side of the vertical rail 40, the horizontal cursor 8 is provided with an axial direction of the one connecting element. A parallelism adjustment mechanism is provided in the vertical rail 40 to adjust its parallelism to the horizontal rail 4, and the perpendicularity of the longitudinal direction of the vertical rail 40 to the axial direction of the other connecting element is adjusted. A rail type flexible parallel ruler device characterized by having a squareness adjustment mechanism.