JPH0233314B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake operating device for a rail type universal parallel ruler or a rail type coordinate analyzer.

In the conventional rail-type flexible parallel ruler/coordinate analyzer, the brake operation for horizontal and vertical cursors can be applied or removed by separately operating the brake operating member for the horizontal cursor and the brake operating member for the vertical cursor. I was walking along. Therefore, there was a drawback that the operation of applying and releasing the brakes for the horizontal cursor and vertical cursor was extremely troublesome, and the operability of the machine was poor.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to eliminate the above-mentioned defects by making it possible to apply and release the brakes of two cursors, a horizontal cursor and a vertical cursor, using one operating member.

The configuration of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a drawing board, and 4 a horizontal rail fixed to the drawing board 2, to which a horizontal cursor 6 is slidably attached via rollers 8 and 10. Reference numeral 12 denotes a vertical rail whose one end is connected to the horizontal cursor 6, and a roller 14 is rotatably supported at the tail end of the rail, and the roller 14 is placed on the surface of the drawing board 2 so as to be freely movable. . A vertical cursor 16 is slidably attached to the vertical rail 12 via rollers 18, and a head 20 is attached to this via a hinge member. A straightedge 22 is removably fixed to the mounting plate of the head 20. Reference numeral 24 designates a swinging arm whose one end is rotatably supported by a shaft 26 on the horizontal cursor 6, and a coil spring 28 attached to the horizontal cursor 6 is connected to this swinging arm. Forced in the direction of rotation. A wire rope 30 has one end fixed to the swinging arm 24, and the other end fixed to the tail 12a of the vertical rail 12. A brake shoe 32 is fixed to the swing arm 24 and faces the side wall surface 4a of the horizontal rail 4. A swing arm 34 has one end rotatably supported by the vertical cursor 16, and a rope pulley 38 is rotatably supported at its free end.
The rope pulley 38 is in contact with the rope 30. Reference numeral 40 denotes an L-shaped swinging arm whose one end is rotatably supported 42 on the vertical cursor 16, and a brake shoe 44 is fixed to the free end side of the arm. is facing. 46 and 48 are rope pulleys rotatably supported by the vertical cursor 16;
It is touching 0. 50, 52 are vertical cursors 16
A horizontal brake cam and a vertical brake cam are rotatably supported by a shaft, and the holes 54 and 56 of both are aligned and connected by a shaft (not shown) so as to be interlocked in the rotational direction. The cam surface of the horizontal brake cam 50 faces the convex curved surface 34a of the swinging arm 34, and the cam surface of the vertical brake cam 52 faces the convex curved surface 40a of the swinging arm 40. 58 is a brake operating member, one end of which is fixed to the horizontal brake cam 50, and the other end of which is fixed to the horizontal brake cam 50;
It protrudes to the side of the vertical rail 12. The brake cams 50, 52 are formed with concave curved surfaces F1, F2, F3 as shown in FIG.

Next, the operation of this embodiment will be explained.

When the concave curved surface F3 of the vertical brake cam 52 faces the convex curved surface 40a of the arm 40, the brake shoe 44 is slightly separated from the side wall surface 12a of the vertical rail 12, and the vertical cursor 16 moves along the vertical rail 12. You can move around freely. When the locking surface L of the cam 52 is located on the convex curved surface 40a, the locking surface L
As a result, the convex curved surface 40a is pushed to the left in FIG. Press and vertical cursor 1
6 is fixed to the vertical rail 12. When either the concave curved surface F1 or F2 of the horizontal brake cam 50 is opposed to the convex curved surface 34a of the arm 34, the brake shoe 32 is in a state of separation from the side wall surface 4a of the horizontal rail 4, and the horizontal cursor 6 is in a horizontal position. It can move freely along the rail 4. Lock surface L of cam 50
When the convex curved surface 34a is located on the convex curved surface 34a, the convex curved surface 34a is pushed to the left in FIG. 2 by the lock surface L. This causes the pulley 38 to move to the left,
The rope 30 is bent to the left, the swinging arm 24 is pulled downward by the tension of the rope 30,
The brake shoe 32 comes into pressure contact with the side wall surface 4a of the horizontal rail 4. This causes the horizontal cursor 6 to move to the horizontal rail 4.
Fixed. The rotation of the brake cams 50 and 52 can be performed by a single operating member 58. When the operating member 58 is in the position shown in FIG. 2, the concave curved surfaces F2, F3 of the cams 50, 52 are opposed to the convex curved surfaces 34a, 40a of the arms 34, 40. In this state, both the vertical and horizontal cursors 16 and 6 are in a free state. From this state, the operating member 5
8 in the counterclockwise rotation direction, the lock surface L1 of the cam 50 is located on the convex curved surface 34a, and the horizontal cursor 6
is fixed. At this time, the vertical cursor 16 is in a free state. When the operating member 58 is rotated in the counterclockwise rotational direction, the horizontal cursor 6 is freed by the concave curved surface F1, and the vertical cursor 16 is braked by the locking surface L2 to be in a fixed state. When the operating member 58 is rotated in the counterclockwise rotation direction, the vertical and horizontal cursors 16 and 6 are both fixed by the lock surfaces L3 and L2. That is, when the operating member 58 is rotated in the counterclockwise direction from the position shown in FIG. Then, only the vertical cursor 16 shifts to the brake state, and then both the vertical and horizontal cursors 16 and 6 shift to the brake state. This order consists of the concave curved surface F of the cams 50 and 52 and the locking surface L.
Various settings can be made by appropriately designing the positional relationship between the two. In the above embodiment, when it is desired to fix only the horizontal cursor 6 from the state in which both the vertical and horizontal cursors 16 and 6 are fixed, the fifth
As is clear from the cam shape in the figure, the horizontal cursor 6 is always
It is necessary to make it free once, but the 6th
As shown in Figs. and 7, the horizontal brake cams 60, 6
2, the concave curved surface F of the vertical brake cams 64 and 66, and the shape of the locking surface L can eliminate the above-mentioned defects.

Note that the brake mechanism is not particularly limited to the illustrated embodiment; for example, a solenoid operated by a micro switch is provided at the cursor, a brake shoe is attached to the operating shaft of the solenoid, and this is attached to the rail. Even if the micro switch is placed facing the wall surface and the on/off control of the micro switch is controlled by the concave curved surface and the lock surface of the brake cam, the same effect as in the above embodiment can be obtained.

In this embodiment, the swing arm 24, the brake shoe 32, the rope 30, and the rope pulleys 46, 48
constitutes a lateral brake mechanism, and the swing arm 34 and pulley 38 constitute a lateral brake operating body that operates the lateral brake mechanism by displacement thereof. The brake shoe 44 constitutes a vertical brake mechanism, and the swing arm 40 constitutes a vertical brake operating body that operates the vertical brake mechanism by its displacement. Also, the lock surface L of the horizontal brake cam 50
1 and the concave curved surface F3 of the vertical brake cam 52 constitute a surface for operating only the horizontal brake mechanism.
Further, the concave curved surface F1 of the horizontal brake cam 50 and the locking surface L2 of the vertical brake cam 52 constitute surfaces for operating only the vertical brake mechanism. In addition, the lock surfaces L3 and L2 of the vertical and horizontal brake cams 50 and 52
constitutes the surface that activates both the longitudinal and lateral brake mechanisms. Further, the concave curved surfaces F2 and F3 of the vertical and horizontal brake cams 50 and 52 constitute surfaces that release both the vertical and horizontal brake mechanisms. In addition, in the description of the other embodiments above, the solenoid constitutes a longitudinal and lateral brake mechanism, and the micro switch constitutes a longitudinal and lateral brake operating body. The above mechanisms and means can be modified in various designs, and are not particularly limited to the configuration shown in the drawings.

Since the present invention is configured as described above, the braking operation of the vertical cursor and the horizontal cursor can be easily performed with one operating member, and there is an effect that drawing work etc. can be performed efficiently.

[Brief explanation of drawings]

The drawings show preferred embodiments of the present invention, in which Fig. 1 is an overall plan view, Fig. 2 is a sectional explanatory view of main parts, Fig. 3 is a side view, Fig. 4 is an exploded plan view, and Fig. 5 is an exploded plan view. FIG. 6 is an exploded plan view showing another embodiment of the brake cam, and FIG. 7 is an exploded plan view showing another embodiment of the brake cam. 2...Drawing board, 4...Horizontal rail, 6...Horizontal cursor, 12...Vertical rail, 16...Vertical cursor, 1
8...Roll, 20...Head, 22...Straight edge,
24... Swinging arm, 26... Shaft, 30... Wire rope, 32... Brake shoe, 34... Swinging arm,
36... Pivot, 38... Rope pulley, 40...
Swing arm, 44... Brake shoe, 46, 48...
Rope pulley, 50... Lateral brake cam, 52...
... Vertical brake cam, 58 ... Brake operation member.

Claims (1)

[Claims] 1. A horizontal cursor that can be moved freely along the horizontal rail,
A vertical cursor that can move freely along the vertical rail, a horizontal brake mechanism that prevents the horizontal cursor from moving relative to the horizontal rail, a vertical brake mechanism that prevents the vertical cursor from moving relative to the vertical rail, and a concave curved surface and locking surface on the outer circumferential surface. a horizontal brake cam whose central portion is rotatably supported by the vertical cursor; and a horizontal brake cam having a concave curved surface and a locking surface formed on its outer peripheral surface so as to rotate coaxially with the horizontal brake cam in conjunction with each other. a vertical brake cam provided, and a horizontal brake actuating body disposed opposite to the horizontal brake cam and configured to apply and release the brake from the horizontal brake mechanism;
a vertical brake actuating body disposed opposite to the vertical brake cam and configured to apply and release the brake on the vertical brake mechanism; and a vertical brake operating body connected to the cam for rotating the horizontal brake cam and the vertical brake cam simultaneously in conjunction with each other. one brake operation member, and the concave curved surface and the lock surface of the horizontal brake cam and the vertical brake cam form a surface that operates only the vertical brake mechanism, a surface that operates only the horizontal brake mechanism, and a longitudinal and lateral brake mechanism. 1. A brake operating device for a rail-type flexible parallel ruler or a rail-type coordinate analyzer, characterized in that a surface for both operating the vertical and horizontal brake mechanisms and a surface for releasing both the vertical and horizontal brake mechanisms are formed.