JPS5930403Y2 - coordinate positioning device - Google Patents

Description

[Detailed description of the invention] This invention is an automatic wiring machine, an automatic assembly machine, an automatic drafting machine, etc., where a cursor with a pen, etc. is attached to the finger A; The first part relates to a positioning mechanism 1 of an apparatus that performs drawing or the like by moving on the XY orthogonal coordinates.

Conventionally, an automatic drawing machine, etc., which moves a cursor up, down, left and right, by the synchronous rotation of two motors, is disclosed in the applicant's application f.
This is disclosed in Japanese Patent Application Laid-Open No. 51-98048, etc.

JP-A-51-98048 I Disclosed Technique 1 As shown in FIG. The X-carriage 3°465 shown in FIG. 1 shows an automatic drafting machine of the type that runs once in the X direction, and the -1000 cursor 7 runs once in the Y direction on the beam 2.

In the figure, the wire rod 11 is connected to the pin 121 on the cursor 7 at the -10,000 end.
This is fixed, and the pulleys 18, 9, 21, 16°15.17,
20, 10, 19r are hung as shown in FIG. Je is attached.

The shafts of the pulleys 9 and 1o are connected to motors 30 and 31 fixed to the drawing board 11, one pulley 15 is provided above the cursor 7, and pulleys 16 and 17 are provided above the X carriage 3. There are 1 pulleys 18 and 19 provided on the X carriage 4, and 11 pulleys 20 and 21 are provided on the drawing board.

Now pulley 9b5 from motor 30J. Also motor 3
If the pulleys 10h5 and 11 are rotated counterclockwise by an equal amount I at the same time, the beam 2 will turn +X as shown in the diagram.
If the beam 2 moves once in the direction and the inverted l-turn pulleys 9 and 10 both rotate once clockwise, the beam 2 moves once in the -X direction shown in FIG.

- If pulley 9 and pulley 10 rotate one turn in the counterclockwise direction, the cursor 7 moves one turn in the +Y direction shown in FIG. , the cursor 7 moves one step in the -Y direction.

In this way, the cursor 7 and the beam 2 can move freely over the drawing plate 1 due to the synchronous rotation of the two motors 30 and 31.
In this mechanism, the only parts of the wire rod 11 that are directly involved in positioning in the X direction are the wire rods 11 between the pulleys 9 and 18 and between the pulleys 10 and 19; During high-speed operation in the X direction, the wire rod 11 between 16.degree.

In other words, when moving in the
To rotate at high speed and send the wire 11 in either direction (
However, if there is friction between the pulleys 15, 16, 17 and the shaft at this time, or when accelerating or decelerating movement in the X direction;
The rotational moment 1-t) about the carriage 4 may cause the S-beam 21 to be strained, causing the beam 2 to fall with respect to the rail 6.

To prevent this, the X-carriage 4 can be firmly fixed via the rail 61 and guide rollers, but this inevitably increases the weight of the X-carriage 4, and high-speed rolling is difficult. Not suitable.

In order to overcome these drawbacks, the present invention has a structure in which the driving force of one motor is pulled at both ends of the cursor, and compared to the conventional structure in which only the l end of the cursor is directly pulled, the operation of the beam and cursor is improved. It has been smoothed for 1 time.

The explanation will be given below with reference to the drawings. Figure 2 shows an embodiment of the present invention, in which the wire arrangement shown in Figure 1 is doubled,
The arrangement is mechanically symmetrical in both directions.

That is, one end is connected to the pin 12a1 on the cursor 7, and the other end is connected to the pin 1 on the cursor 7 via the tension spring 14a.
The wire rod 11a fixed at 3a1 is one pulley 18a, 25, 29, 16a as shown in FIG.

15a, 17a, 20a, 28, 24, 10a.

The shaft of the pulley 25 is connected to a motor 327, and the shaft of the pulley 28 is connected to a motor 331.

10,000, Pins 13b, 12b are provided at symmetrical positions in the drawing with the pins 12a, 13a of the cursor 7, and the same as the wire rod 11a, the wire rod 11b1) S tension spring 14b and pulleys 17b, 20b.

2L22, 10b, 19b, 15b, 18b.

23.27, 16b+ is hung.

Here, the pulley 22 connects the motor 32 and the shaft of the pulley 251, and the pulley 27 connects the motor 33 and the shaft of the pulley 281.

In addition, the above pulley 1Q a t 10 b20a, 20b
, 22, 23, 24, 25, 26°27.2B, 29 are provided for drawing @11, pulley 15ati5b is provided above cursor 7, pulleys 16a, 16b, 17a, 17
b is provided once on the X carriage 3, and a pulley 18a,
18b, 19a.

19b is provided once on the X carriage 4.

Now, from the two motors 32,331, the pulley 22'j
6 and pulley 25 are rotated one turn counterclockwise as indicated by the arrows in FIG. 1, and pulley 27 and pulley 28 are simultaneously rotated one turn clockwise. For example, the car true moves in the +X direction shown in Figure 1,
1 opposite pulley 22. 25 clockwise 1 pulley 27.
If 2B rotates counterclockwise by the same amount,
The cursor 7 moves in the -X direction.

- If the pulleys 22, 25, 27, and 2B61 all rotate counterclockwise by the same amount, the cursor 7 will move one turn in the +Y direction, and if all the pulleys rotate clockwise by the same amount, the cursor 7 will move the same amount in the +Y direction. move by one in the -Y direction.

The above explanation was made using a mechanism using a total of two cam motors and two wire rods.If the same effect can be obtained, there is no problem in using a larger number of motors, wire rods, etc. None.

That is, a total of four motors may be used, one for each of the pulleys 22, 25, 27, and 28/.

Also, by fixing and winding the 10,000 ends of each of two wires around the same pulley and rotating the pulley,
If one wire is rubbed so that the same amount of the other wire is let out at the same time as it is wound up, the result is the same effect as when one wire is wound around a pulley.

- Instead of wire rods, flexible belt-shaped plates, chains, etc. may be used.

According to the present invention, the axis of two or more motors and the cursor are connected by two wires or two sets of wires, and the two sets of motors are mutually rotated. The cursor can be moved freely in the XY plane, and in particular, when moving the cursor in the X or Y axis direction, two sets of motors are rotated at the same time. 1 Compared to this, it can operate at a much higher speed, and the arrangement of the two sets of wire rods, etc. is almost symmetrical in both the X and Y directions, so the beam bs guide rail This has the advantage that there is no risk of one piece falling over, and the accuracy of vertical positioning can be improved.

Further, the positioning device according to the present invention can be used not only with an automatic drafting machine but also with various devices that perform positioning using a numerical control device, such as an automatic wiring machine or an automatic assembly machine.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a positioning mechanism based on synchronous rotation of two motors, and FIG. 2 is an embodiment of the positioning mechanism based on the present invention. Figure 1, 1: drawing board, 2: beam, 3, 4: X carriage, 5, 6: guide rail, 7: cursor, 8: pen,
9, 10: Pulley, 11: Wire rod, 12.13: Pin, 14
:Tension spring, 15, 16° 17.18, 19, 20, 2
1: Pulley, 30° 31: Motor. Figure 2, 1: drawing board, 2: beam, 3, 4: X carriage, 5, 6: guide rail, 7: cursor, 8: pen,
10a, 10b: Pulley, 11a, llb: Wire rod, 12a, 12 bl 3a, 13b: Pin, 14
a, 14 b: tension spring, 15a, 15b, 16
a, 16b, 17a. 17b, 18a, 18b, 19a, 19b. 20a, 20b, 22, 23, 24, 25° 26.27
, 28, 29: Pulley, 32, 33: Motor.

Claims (1)

[Scope of utility model registration request] A beam that moves while being guided by two rails placed parallel to each other on the two sides of the drawing board, a cursor that moves on the beam in a direction perpendicular to the direction of movement of the beam, and multiple motors that drive the beam and cursor;
It consists of a wire rod that transmits the driving force of the mokuni to the beam and one cursor, and a plurality of pulleys provided with a drawing plate, a beam, and one cursor, and one end of the wire rod is directly connected to I through the pulleys.
A cursor is fixed at the other end via a cushioning material such as a spring, and the beam and cursor are moved to an arbitrary location on the plane of the drawing plate by driving the plurality of motors to rotate synchronously in the same or opposite directions. A coordinate positioning device in which the wire rods are placed in double rows on an automatic drawing machine or the like for positioning, and wire rods and pulleys are provided at symmetrical positions above the cursor and at both ends of the beam.