JP3260077B2 - Two-dimensional simultaneous motion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-dimensional simultaneous motion apparatus for giving various objects a motion along a desired motion curve.

[0002]

2. Description of the Related Art For example, a processing head in a machine tool,
2. Description of the Related Art Devices for imparting a motion along a desired motion curve to various objects such as a welding machine in an assembly machine and various engraving and drawing heads have been proposed. As this type of device, a Y-direction moving member that moves in the X-direction
An XY table combining a Y-direction moving member moving in a direction is known.

[0003]

However, this type of device has the following problems. In order to provide a motion along a desired motion curve, a feed mechanism is provided for each of the X-direction moving member and the Y-direction moving member, and a control device for controlling the moving amount and the moving order is required.

In the above case, a motor is required to move each of the X-direction moving member and the Y-direction moving member, and this motor is not a servomotor for enabling precise position control. Not be.

[0005] The X-direction moving member must be equipped with a Y-direction moving member and a motor for moving the Y-direction moving member, so that the mass is inevitably increased. Occasionally, there was a risk of overrunning the control position set by force.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is a two-dimensional simultaneous motion apparatus based on a completely new idea from the conventional XY table. The purpose is to provide.

That is, in the two-dimensional simultaneous exercise apparatus of the present invention, a rail that performs a rotational movement with respect to the exercise apparatus main body is provided with a moving member that performs a linear movement along the rail, and the moving member has a desired movement curve. The exercise device main body is provided with an arbitrary cam for giving a motion along the motion.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view of a two-dimensional simultaneous motion apparatus according to an embodiment of the present invention with a cam body removed, and FIG. 2 is a partially cutaway side view of the same with the cam body attached. FIG. 3 is an exploded perspective view showing the disassembled state.

FIG. 1 shows a base of a two-dimensional simultaneous motion apparatus.
An annular rail 10 is fixed to the upper surface of the base 1. The annular rail 10 supports the linear rail 20 and causes the linear rail 20 to perform a circular motion. Will be rotated around the rotation center. In the figure, reference numeral 21 denotes a straight rail 20 in this case.
Is a guide for rolling the two ends of the annular rail 10 along the annular rail 10. In this case, three ridges 10A projecting from both sides of the annular rail 10 are sandwiched by three rollers 22 having grooves 22A extending vertically from the guide 21. By doing so, it is a rolling means.

The above-mentioned linear rail 20 is rotatably driven by connecting a rotating shaft 23 suspended from the center of rotation to a rotating shaft 3 from a motor 2 provided on the base 1 (see FIG. 2). . In this case, reference numeral 4 denotes a rotating shaft 3 in this case.
And a shock-absorbing joint made of an elastic material interposed between the rotary shaft 23 and the rotary shaft 23.

Reference numeral 30 in the figure denotes a moving member that moves linearly along the above-mentioned linear rail 20, and is rotatable with respect to the linear rail 20. Reference numeral 31 in the figure denotes a guide for rolling in this case. In this case, four rollers 32 with grooves 32A vertically provided from the guide 31 hold the ridges 20A protruding on both sides of the linear rail 20. Thus, the rolling means is used.

Reference numeral 40 in the drawing denotes a cam body (see FIG. 2). The cam body 40 is fixed to the base 1 via the support 5, and an optional cam groove 41 provided therein is provided.
The moving member 30 is shown in FIG.
A rotating pin 33 projecting from the upper surface is slidably combined.

According to the two-dimensional simultaneous motion apparatus of the present invention having the above-described structure, the moving member 30 is movable in the linear direction along the linear rail 20, while the moving member 30 is movable in the linear direction.
Is rotatable around the center of the annular rail 10 along the annular rail 10, so that an effect of being able to move to any coordinates on the plane is generated.

Thus, a driving force in the rotational direction is applied to the linear rail 20, while the rotating pin 3 protruding from the moving member 30 is provided.
By combining 3 with any cam groove 41 of the cam body 40, the moving member 30 has an effect of performing any two-dimensional simultaneous movement along the cam groove 41 (see FIG. 4).

Therefore, if a cam groove 41 having a shape corresponding to a desired movement curve is prepared, the moving member 30 can perform a desired movement, and various heads and tools are fixed to the moving member 30. Thus, a desired exercise can be performed.

[0016]

The present invention having the above configuration has the following specific effects. Since a desired movement can be obtained only by combining an arbitrary cam corresponding to a desired movement curve, a feed mechanism is provided for each of the X-direction moving member and the Y-direction moving member as in a conventional XY table, and the moving mechanism is provided. A control device for controlling the amount and the moving order is not required, and an arbitrary cam may be simply prepared as a template.

As in the prior art XY table, X
It is not necessary to prepare two motors for the direction moving member and the Y direction moving member, and since the position control is performed by the cam as described above, it is not a servo motor for enabling precise position control. An ordinary motor can be used, and an extremely low-cost two-dimensional simultaneous motion device can be realized in combination with the need for a control device.

The moving member is much smaller and smaller in mass than the X-direction moving member in the case of the XY table of the prior art, and the moving member slides on the cam groove on which the rotating pin is to slide. Since dynamic resistance is added, overrun does not occur even when moving at high speed, and extremely high positional accuracy can be obtained with a simple configuration.

In combination with the above-described effects, extremely high-speed two-dimensional simultaneous movement, which was impossible with the XY table of the prior art, can be realized, so that the speed of operations of various devices utilizing this can be increased.

[Brief description of the drawings]

FIG. 1 is a plan view of a two-dimensional simultaneous motion apparatus according to the present invention with a cam body removed.

FIG. 2 is a partially cutaway side view showing a state where the cam body is attached.

FIG. 3 is an exploded perspective view showing a state where the cam body is removed.

FIG. 4 is a plan view showing a state where the cam body is removed, showing movement of the moving member;

[Explanation of symbols]

 Reference Signs List 10 annular rail 20 straight rail 30 moving member 41 cam groove

Claims (1)

(57) [Claims] An annular rail is provided on a base, and a linear rail to be rotated by a power unit around the center of the annular rail is rollably traversed in the diameter direction of the annular rail so as to be rolled over the linear rail. Is characterized in that a movable member is provided rotatably, and a rotating pin protruding from the movable member is slidably combined with a cam groove of an arbitrary cam fixed on a base. Two-dimensional simultaneous exercise device.