JPH0318103Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an electric processing machine that processes a workpiece by electrical action between an electrode and the workpiece, and particularly relates to the structure of its load support section.

[Prior Art] Figures 5 to 7 show a front view, a side view, and a side view, respectively, of an electric processing machine that has been conventionally used.
and a plan view. In the figure, 1 is a bed, on which a workpiece is placed. 6 is a leveling bolt that supports the bed 1, that is, the main body of the electric processing machine from the floor 7, and 6a is a bolt seat.

Next, the load supporting function of the electric processing machine main body will be mainly explained. Electrical processing machines are installed by adjusting the leveling. Leveling is performed by turning the leveling bolt 6. This results in
The weight of the electric processing machine is supported on the floor 7 via the bed 1 and leveling bolts 6.

[Problem that the invention attempts to solve]

Since the conventional electric processing machine is constructed as described above, the main body weighs, for example, about 2 tons, but the bed 1 is supported at three points in the figure, and the unsupported parts of the bed and local support points are This caused a large amount of deflection, which caused the upper surface of the bed on which the workpiece was placed to deflect, which affected machining accuracy.

This invention was made to solve the above-mentioned problems, and aims to reduce the deflection of the bed caused by the supporting method and to obtain a highly accurate electric processing machine.

[Means for solving problems]

The electric processing machine according to this invention is interposed between the bed on which the workpiece is placed and the floor, and the load from the floor is reduced to 1.
The arm is configured to receive the load from the bed at two points.

[Effect]

Since the arm in this invention supports the bed at multiple points, the deflection between the support points is small, and since the shared load at each support point is small, local deformation at the support points is also small. As a result, machining errors caused by the bending of the bed can be reduced.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings. Figure 1 is a front view showing an electric processing machine according to an embodiment of the invention, Figure 2 is a plan view showing the arm arrangement of the machine in Figure 1, and Figure 3 is an enlarged view of the main parts of the machine in Figure 1. FIG. In the figure, 2
is an arm interposed between the bed 1 and the floor 7, 2a is a bolt seat that receives the weight of the bed 1, 2b is a roller seat provided on the arm 2, 4 is a roller, 5 is a floor seat, 5a
is a roller seat provided on the floor seat 5. The arm 2 is configured to receive a load from the floor 1 at one point via a floor seat 5 and a roller 4, and to receive a load from the bed 1 at two points via a leveling bolt 6. That is, in this example, the arm 2 is supported at the center by the roller 4 so as to be able to move in a scale manner, and the roller seat 2b is configured to be located above the bolt seat 2a.

Next, the load supporting action will be explained.

The weight of the main body is first transmitted to the bolt seat 2a of the arm 2 by the leveling bolt 6 coming out from the bed 1. Since the arm 2 is in contact with the floor seat 5 via the roller 4, the weight transmitted to the arm 2 is transmitted to the floor seat 5 and the floor 7 via the roller 4.

As a result, the load that used to be applied to one place on the bed 1 is now distributed to two places, and what used to be supported at three points is now supported at six points, and what used to be supported at four points is now supported at eight points. Since the bed 1 can be supported, the distance between the support points can be reduced, and the deflection of the bed 1 can be reduced. At this time,
Since arm 2 is supported so that it can move like a balance,
The load distribution is determined only by the distance between the roller seat 2b and the bolt seat 2a, and no special consideration is required in the installation adjustment to set the sharing ratio. At the same time, since the load shared by each support point is reduced, local deformation in the vicinity of the contact portion of the support points can be reduced. These actions reduce the deformation of the bed 1, making it possible to reduce machining errors caused by the deformation of the bed 1.

Furthermore, by arranging the roller seat 2b higher than the bolt seat 2a, the arm 2 is kept stable without falling when a load is applied, based on the so-called "Yajirobee" principle.

In the above embodiment, the roller 4 is provided between the arm 2 and the floor seat 5, but the same effect can be obtained even if a ball is used instead of the roller 4.

In order to maintain stability of the arm 2, the roller seat 2b is placed at a higher position than the bolt seat 2a, but as long as it does not become extremely unstable, the fourth
As shown in the figure, the arm 2 may be made straight, which has the advantage of making the arm 2 easier to work with.

Further, in the above embodiment, as shown in FIG. 2, a case has been described in which the bed 1 is supported at six points via three arms 2 arranged in a triangular shape. The number and arrangement of the bolts may be freely selected depending on the load applied, and it is also conceivable to use them in combination with the support structure of the leveling bolts 6 and bolt seats 6a shown in the conventional example.

Furthermore, in the above embodiment, only one stage of the arm 2 was provided between the floor 7 and the bed 1, but by further providing the second floor upper part 5 and the arm 2 above the bolt seat 2a, the load can be reduced to two stages. If the bed is supported at 3 points on the floor, it can be supported at 12 points, and if it is supported at 4 points on the floor, it can be supported at 16 points, making it possible to further reduce the deflection of the bed.

[Effect of idea]

As described above, according to this idea, the arm is interposed between the floor and the bed and is configured to receive the load from the floor at one point and the load from the bed at two points. Therefore, as the number of support points for the bed increases, the deflection of the bed decreases, making it possible to provide an electric processing machine with small machining errors caused by deformation of the bed.

[Brief explanation of drawings]

Figure 1 is a front view showing an electric processing machine according to an embodiment of this invention, Figure 2 is a plan view showing the arm arrangement of the machine in Figure 1, and Figure 3 is an enlarged view of the main parts of the machine in Figure 1. 4 is an enlarged front view showing main parts of another embodiment of this invention, and FIGS. 5 to 7 are front views showing a conventional electric processing machine, respectively.
They are a side view and a plan view. In the figure, 1 is the bed, 2 is the arm, 2a,
6a is a bolt seat, 2b and 5a are roller seats, 4 is a roller, 5 is a floor seat, 6 is a leveling bolt, and 7 is a floor. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) In an electric processing machine that processes the above-mentioned workpiece by electrical action between an electrode and the workpiece, the above-mentioned An electric processing machine comprising an arm configured to receive a load from the floor at one point and receive a load from the bed at two points. (2) The electric processing machine according to claim 1, which uses rollers to transmit the load acting on the arm to the floor. (3) The electric processing machine according to claim 1, wherein a ball is used to transmit the load acting on the arm to the floor. (4) The arm is constructed such that the point on which the load from the floor is applied is at a higher position than the two points on which the load from the bed is applied. The electric processing machine described in any of the above.