JPS6232880Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a moving load reducing device for a head in a rail type universal parallel ruler device, a rail type coordinate analyzer, etc.

Conventionally, as this type of apparatus, the one described in Japanese Patent Application Laid-open No. 145747/1983 is known. This device biases the vertical cursor in the flying direction with respect to the vertical rail by magnetic force as a means to reduce the load of the head moving along the vertical rail. However, even if a magnetic force is applied to the vertical cursor to reduce the load of the head moving along the vertical rail, and the frictional force between the vertical cursor and the vertical rail is reduced, the movement of the head along the vertical rail will still be affected. It is not possible to significantly reduce the load. This is because it is not the frictional force between the vertical cursor and the vertical rail, but the frictional force between the balance weight and the vertical rail that acts as a large load on the movement of the head along the vertical rail.
Normally, a head is attached to a vertical cursor via a hinge, but when the head is placed on a drawing board, the load of the head is supported by the drawing board and is not applied to the vertical cursor. Also, when you lift the head off the drawing surface by grasping the grip handle of the head, the weight of the head is supported by your hand and does not apply to the vertical cursor.

In any of the above cases, the load of the head is not applied to the vertical cursor, so when the vertical cursor is magnetically levitated relative to the vertical rail, only the weight of the vertical cursor is supported by the magnetic force of the magnetic body. That is, only the moving load caused by the frictional force between the vertical cursor and the vertical rail caused by the weight of the vertical cursor is reduced by the magnetic force of the magnetic body. However, since the balance weight is balanced with the total weight of the vertical cursor and head, the weight of the balance weight is set equal to the total weight of the vertical cursor and head. Normally, in a rail type universal parallel ruler device, the weight of the balance weight is about five times the weight of the vertical cursor. In other words, compared to the frictional force generated between the vertical cursor and the vertical rail due to the weight of the vertical cursor, the frictional force generated between the balance weight and the vertical rail due to the weight of the balance weight is approximately 5.
That's twice as much. This indicates that even if the vertical cursor is magnetically levitated to reduce the load of the head moving along the vertical rail, the load of the head moving along the vertical rail cannot be effectively reduced.

The object of the present invention is to greatly reduce the moving load of the head along the vertical rail by biasing the balance weight in the flying direction by magnetic force, thereby eliminating the above-mentioned defects.

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

Reference numeral 1 denotes a drawing board, which is fixed to a support frame of a tiltable table (not shown) and configured so that it can be set at a desired inclination angle between a horizontal state and a vertical state. 2 is a horizontal rail fixed to the drawing board 1 by a vise device, and a horizontal cursor 3 is movably connected to this rail. A vertical rail 4 has one end connected to the horizontal cursor 3, and a tail roller 5 is rotatably attached to the other end of the rail. A weight running path 7 for a balance weight 6 is formed in the vertical rail 4 over its entire length in the longitudinal direction, and a balance weight 6 having an appropriate weight is movably arranged on the running path 7. . Said running path 7
is provided in the cavity 8 of the vertical rail 4.
A vertical cursor 10 is movably connected to the vertical rail 4 via rollers 9, and a head 11 is connected to the cursor 10 via a hinge member. Straight edges 12 and 13 are attached to the head 11. The vertical cursor 10 and the balance weight 6 are connected by a wire rope 14,
The wire rope 14 is stretched around rope pulleys (not shown) rotatably disposed at both ends of the vertical rail 4. When the vertical cursor 10 is moved along the vertical rail 4, the balance weight 6 moves along the cavity 8 in a direction opposite to the direction in which the vertical cursor 10 moves. The vertical cursor 1 is generated due to the weight of the head 11 when the drawing board 1 is tilted in the upright direction.
The force of the drawing board 1 to move in the falling direction along the vertical rail 4 is canceled out by the weight of the balance weight 6, and as a result, when the drawing board 1 is tilted, the user can release the hand from the head 11. Even if the head 1
1 stably rests at a desired position on the drawing board 1 without falling along the drawing board 1.

In Figures 2 and 3, 15, 16, 1
7 and 18 are elongated plate-shaped magnets disposed on the wall surface of the cavity 8 over substantially the entire length thereof, and in this embodiment, commercially available manganese-aluminum magnets are used. 19, 20, 21, 22, 23, 24, 2
Reference numerals 5 and 26 indicate long plate-shaped magnets disposed on the balance weight 6, and these magnets have the polarities shown in the figure, and are connected to the magnet 15 on the side of the cavity 8 and the balance weight 6. The magnets 19 and the like on the sides face each other as shown. Magnets 15 and 20 and 18 and 2
Magnets 5 are in charge of completely levitating the balance weight 6 within the cavity 8 by mutually repelling magnetic forces, and magnets 16 and 21 and 17 and 24 are in charge of ensuring that the balance weight 6 is completely levitated within the cavity 8. The magnets 15,
19, 18, 26, and 16, 22, 23, 17
is the balance weight 6 in the cavity 8,
Regulating the runout in the direction perpendicular to the direction of movement,
It is responsible for preventing the both sides of the balance weight 6 from colliding with the side walls of the cavity 8.
The entire surface of the balance weight 6 is coated with Teflon 27, which is a friction force reducing member. A Teflon tape 2 is placed on the inner wall surface of the cavity 8 at a location that is likely to come into contact with the balance weight 6.
8 is installed. Furthermore, all of the magnets 15 and the like are coated with Teflon 29. The balance weight 6 is connected to the magnet 15 etc. and the 1
Due to the magnetic force of magnet 9, etc., it is completely levitated within the cavity 8, as shown in the figure.

In the above configuration, when the vertical cursor 10 is moved along the vertical rail 4, the balance weight 6
runs in the cavity 8 of the vertical rail 4 in a completely floating state. When the balance weight 6 is traveling, the balance weight 6 may come into contact with the wall surface inside the cavity 8 due to the vibration generated therein. Since the members are in contact, the balance weight 6
No large frictional load is applied to the vehicle when it is running. As another embodiment of the frictional force reducing member, rollers can be used instead of Teflon. An embodiment using rollers is shown in FIG. In the figure, a roller 31 is rotatably attached to a balance weight 30 that is completely suspended inside a cavity 8 by a magnet.
The surface of the roller 31 faces the top wall surface and bottom wall surface (ie, weight travel path) of the cavity 32 with an extremely narrow gap therebetween.

In the above configuration, the balance weight 30
When the roller 31 travels inside the cavity 32 and vibrations occur against the magnetic force of the magnet, the surface of the roller 31 comes into contact with the wall surface of the cavity 32.

FIG. 5 shows another embodiment, in which 33 and 3
4, 35, and 36 are magnets for floating the balance weight 37 from the bottom wall surface of the cavity 38, and the same polarity faces each other to generate a repulsive force. 33 and 37a and 35 and 38a are
Balance weight 3 completely floating inside the cavity
The balance weight 37 is a magnet for preventing horizontal vibration of the balance weight 37, and prevents both sides of the balance weight 37 from coming into contact with both side walls of the cavity 38 due to repulsive magnetic force. 3
Reference numerals 9 and 40 denote rotatable rollers, the surfaces of which are close to and opposite to the bottom wall surface above the cavity 38.

FIG. 6 shows another embodiment, in which reference numeral 41 denotes a regulating rail surface formed over the entire length of the running path 43 in the cavity 42, and a magnet 4 on this surface.
The lateral vibration control surface 48 of the balance weight 47, which is completely floated within the cavity 42 by the levers 3a, 44, 45, and 46, is slidably and lightly in contact with the balance weight 47. 4
Reference numerals 9 and 50 denote rotatable rollers, and the surfaces of these rollers face each other in close proximity to each other on the running path 43.

In the above configuration, the balance weight 47
In the cavity 42, magnets 43a, 44 and 45,
It travels inside the cavity 42 while being guided by the regulation rail surface 41 while being completely levitated by the magnetic force of the magnet 46 .

FIG. 7 shows another embodiment, in which 51, 52
is caused by magnets 55, 56, and 57, 58,
Balance weight 6 completely floating inside cavity 59
These rollers are rotatably attached to the roller 0 and the surfaces of these rollers are in contact with both side wall surfaces of the cavity 59. Reference numerals 61 and 62 are rotating rollers constituting the frictional force reducing member, and the roller surfaces are close to and opposite to the bottom wall surface above the cavity 59.

8 and 9 show another embodiment, in which one of the balance weights 70 is placed in contact with a weight running path 72 via a rotating roller 71 which is a frictional force reducing member, and the other is placed in contact with a magnet 73. The repulsive magnetic force of and 74 causes the vehicle to levitate with respect to the traveling path 72. 7
5, 76, 77, 78 are balance way iso 70
These rollers are rotatably attached to the lateral vibration regulating rollers, and each surface of these rollers is in contact with both side wall surfaces of the cavity portion 79. In addition, when implementing the present invention, the frictional force reducing member may be made of other members having the same effect as rollers and Teflon. Further, although the above embodiments all utilize the repulsive force of the magnet, it is of course possible to adopt a configuration that utilizes the attractive force.

As mentioned above, the present invention applies a magnetic force to the balance weight placed on the weight running path of the vertical rail in the direction in which it floats from the weight running path, thereby greatly reducing the moving load of the head along the vertical rail. There are effects that can be achieved.

[Brief explanation of the drawing]

The figures show preferred embodiments of the present invention, in which Fig. 1 is an overall plan view of the universal parallel ruler device, Fig. 2 is a sectional view of the main part, Fig. 3 is a plan view of the same, and Fig. 4 is another embodiment. A sectional view showing an example; FIG. 5 is a sectional view showing another embodiment;
FIG. 6 is a sectional view showing another embodiment, FIG. 7 is a sectional view showing another embodiment, FIG. 8 is a sectional view showing another embodiment, and FIG. 9 is a plan view thereof. 1...Drawing board, 2...Horizontal rail, 3...Vertical cursor, 4...Vertical rail, 5...Tail roller, 6...Balance weight, 7...Travel path, 8...Cavity part,
9... Roll, 10... Vertical cursor, 11... Head, 12, 13... Straight ruler, 14... Wire rope, 15, 16, 17, 18... Magnet, 19, 2
0, 21, 22, 23, 24, 26... magnet, 2
7...Teflon, 28...Teflon tape, 29
……Teflon.

Claims (1)

[Scope of utility model registration request] a horizontal rail 2, a horizontal cursor 3 attached to the horizontal rail 2 so as to be movable along the horizontal rail 2, a vertical rail 4 connected to the horizontal cursor 3 and having a weight running path formed along the longitudinal direction; A vertical cursor 10 is attached to the vertical rail 4 so as to be movable along the vertical rail 4, and a vertical cursor 10 is movably disposed on the weight travel path and connected to the vertical cursor 10 by a rope or the like so as to move in opposite directions. In a device consisting of balance weights 6, 30 and a head 11 connected to the vertical cursor 10, magnets 15, 18 are arranged on the vertical rail 4 over substantially the entire length of the weight running path, magnets 20, 25 facing the magnets 15, 18;
A moving load reducing device for a head in a rail-type flexible parallel ruler device, etc., characterized in that the magnets are arranged so as to act in a direction in which the balance weights 6 and 30 float from the weight travel path.