JPH058010Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention provides a wire-cut electrical discharge machine equipped with a cover that prevents machining fluid that is sprayed and supplied to a machining section where a wire electrode and a workpiece face each other from scattering around the machining area. Regarding.

Conventional technology In a wire cut electrical discharge machine, pulse electrical discharge machining is performed with machining fluid interposed in the machining gap where the wire electrode and workpiece face each other, and the machining fluid is injected into the machining gap. Since it scatters and contaminates the surrounding area, it is common to have a cover made of synthetic resin or iron, but most of them have an open type without a lid. Figure 4 of the drawing shows a conventionally used wire-cut electric discharge machine with an open-type cover, and Figure 5 is a perspective view showing only the open-type cover, with the cover surrounding the side of the machining section fixed. It is made up of a cover 8 and a movable cover 9 that can be easily attached and detached. Fixed cover 8
An insertion opening 11 for the lower arm 4' is provided through waterproof bellows 10, 10 in the vertical part of the lower arm 4' to provide airtightness against lateral movement of the lower arm 4' and movement of the table 6. . FIG. 4 is a side view of a conventional wire-cut electric discharge machine, in which the wire electrode 1 is fed by a feeding mechanism including a plurality of guide rollers between the workpiece 2 and the wire electrode 1, which face each other across a machining gap. A pulse discharge occurs,
After electrical discharge machining, the used wire electrode is wound up by a winding mechanism, and 4 is an upper arm;
4' is the lower arm, 5 is the Z at the tip of the upper arm 4.
a machining head slidably disposed in the axial direction; 6;
6' is an X-Y table that is operated to move in the X and Y directions perpendicular to each other by driving each motor according to a command from a numerical control device; 7 is an X-Y table placed in a processing tank placed on table 6 This is a mounting and fixing base for the workpiece 2 to be provided. Further, 8 and 9 are a fixed part as shown in Fig. 5 and a cover for a removable part, which are made of synthetic resin such as acrylic, metal such as iron, or a combination thereof. It is. In operation, the processing head 5 at the tip of the upper arm 4 is moved up and down by rotating the handle 22.
After determining its position, the wire electrode 1 is passed through the workpiece 2 perpendicularly, and set between the upper and lower arms 4 and 4', and is machined through a pipe that supplies machining fluid by the operation of a pump (not shown). Pulse electrical discharge machining is performed by injecting machining fluid into the machining gap from machining fluid supply nozzles 3 and 3' located above and below the workpiece 2, and applying a voltage pulse supplied from a machining power source (not shown) between the wire electrode 1 and the workpiece 2. This is done as before, and the covers 8 and 9 on the sides of the processing section are open at the top and only enclose the surroundings.

Problems that the invention aims to solve Recently, wire cut electric discharge machining has become faster.
Along with this, it has become necessary to increase the supply pressure of the machining fluid supplied to the machining gap in order to increase the effect of cooling the wire electrode, and currently it is necessary to maintain a machining fluid pressure of 10 kg/cm ² or more. As a result, the supplied machining fluid scatters a lot, and the methods of covering only the area around the nozzle and workpiece are insufficient to prevent this, and many of the fluids scatter outside from the open upper part. The one with an open top is completely unusable.

In view of these problems, the present invention aims to provide a wire-cut electrical discharge machine that can prevent the sprayed machining fluid from scattering around the machining section.

[Means for solving problems]

In order to achieve the above object, the wire-cut electrical discharge machine of the present invention is provided with an opening/closing door that surrounds a machining section where a wire electrode and a workpiece are disposed facing each other and where a machining fluid is sprayed and supplied. a pair of Y-axis direction guide members provided at upper ends of the side cover on both sides in the X-axis direction in parallel with the Y-axis perpendicular to the X-axis; a pair of Y-axis slide arms that are arranged in parallel and whose longitudinal ends move while being guided by the pair of Y-axis direction guide members; and a winding device provided at the upper end portions of the side cover on both sides in the Y-axis direction. and,
One end is connected to each of the pair of Y-axis slide arms, the other end is connected to each of the winding devices, and covers a portion of the upper surface of the side cover except for the area between the pair of Y-axis slide arms. A number of rolling sheets, an X-axis direction guide groove provided in each of the pair of Y-axis slide arms parallel to the X-axis, and a predetermined interval in the X-axis direction between the pair of Y-axis slide arms. a pair of X-axis slide arms having a length that separates the pair of Y-axis slide arms by a predetermined distance and moving while being guided by the X-axis direction guide groove; and each of the pair of Y-axis direction guide members. a pair of Y-axis slide members that move while being guided by the pair; one end portion is connected to each of the pair of X-axis slide arms, the other end is connected to each of the pair of Y-axis slide members; The processing section cover is comprised of two bellows that cover a portion between the Y-axis slide arms except for the area between the pair of X-axis slide arms.

By doing this, it is possible to prevent the machining fluid from scattering around, and even if the machining fluid pressure of the supplied machining fluid is sufficiently high, it is possible to avoid contamination of the surrounding area. Since the side surface of the cover can be opened, the components can be taken in and out, installed and removed freely and smoothly.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 3.

Fig. 1 is a side sectional view of the main parts of a wire cut electric discharge machine equipped with the machining section cover of the present invention;
The figure is a perspective view of the processing section cover of the present invention, and FIG. 3 is a perspective view of FIG. 2 with the winding sheet and bellows removed. First, since the internal structure of the processing section cover shown in FIG. 1 is the same as that shown in FIG. 4, a description thereof will be omitted. As shown in FIG.
A pair of bellows 13, 13' are provided in the X-axis direction centering on the port 23 through which the shaft passes through, and a pair of rolled-up seats 14, 14' are provided in the Y-axis direction. Bellows 13, 1 are attached to U-shaped X-axis slide arms 15, 15' that sandwich the processing head 5.
A pair of Y-axis direction slide members 24, which are connected to one end of the bellows 13, 13', and whose other ends slide guided by Y-axis direction guide members 18, 18'.
24' (Fig. 3). This X-axis slide arm 15, 15' is connected to the winding sheets 14, 1
By passing the protrusion of the handle 15a through an Slide in the axial direction. The Y-axis slide arm 16 and the roll-up sheet 14 are connected to each other by penetrating the protrusion of the handle 16a. On the other hand, rolling sheet 1
4' and the X-axis direction guide groove 21' of the Y-axis slide arm 16' connected to the end of the X-axis slide arm 1.
The handle 15'a is passed through a hole provided at the end of the handles 5 and 15' to connect the two. Therefore, the pair of X-axis slide arms 15, 15' is the same as the Y-axis slide arm 1.
It also slides while being guided in the X-axis direction by the X-axis direction guide groove 21' of 6'. Rolling sheet 1
4 and 14' are winding devices 19 and 19' provided at the upper ends of both sides of the side cover 12 in the Y-axis direction, respectively.
It is connected so that it can be pulled in by a spring (not shown) or the like. The Y-axis slide arm 16, 1 slides in the Y-axis direction.
Both ends of 6' are configured to slide while being guided by Y-axis direction guide members 18, 18'. Further, at least one side of the side cover 12 surrounding the processing section is constituted by an opening/closing door 17 that can be opened and closed by a hinge or the like. After the opening/closing door 17 is opened and the workpiece 2 is fixed on the fixing table 7 and the wire electrode 1 is passed through, the opening/closing door 17 is closed and the machining head 5 is sandwiched between the U-shaped X-axis slide arms 15, 15'. The protrusions at both ends of the handle 15'a are passed through the hole at the end thereof and the X-axis direction guide groove 21' of the Y-axis slide arm 16' at the tip of the rolled-up sheet 14' pulled out from the rolled-up device 19'. When the two are connected, the periphery of the processing head 5 is covered with the bellows 13, 13' and the winding sheets 14, 14'.
Since the rolled up sheets 14, 14' follow the movements of the tables 6, 6' in the X-axis direction and the Y-axis direction, they prevent the machining fluid from scattering to the outside from these parts.

Effects of the invention As described above, according to the present invention, not only the side surfaces but also the top surface of the processing section are covered and the processing section is sealed, so even if the supply pressure of the processing fluid is increased and the flow rate is increased, the processing fluid will not be affected. This eliminates the possibility of dust scattering around the machining area, contaminating the surrounding environment, or causing rust on various equipment, and the cover on the top surface through which the machining head passes can move in the X-axis and Y-axis directions, respectively. Since it is composed of a bellows and a rolled-up sheet, it is possible to widen the range of relative movement between the machining head and the workpiece on the X-Y plane. Also, according to the present invention,
Since the area below the machining head 5 passing through the upper surface of the cover is sealed by the machining section cover, the upper arm 4 is also prevented from being contaminated by the machining fluid. Furthermore, according to the present invention,
Since there is an opening/closing door on the side of the cover, operations such as attaching and detaching the workpiece can be easily performed.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of the main parts of a wire cut electric discharge machine equipped with the machining section cover of the present invention;
Figure 3 is a perspective view of the machining section cover of the present invention, Figure 3 is a perspective view of Figure 2 with the winding sheet and bellows removed, Figure 4 is a side sectional view of a conventional wire-cut electric discharge machine, and Figure 5 is a perspective view of the processing section cover of the present invention. The figure is a perspective view of the cover in FIG. 4. In the figure, 1 is a wire electrode, 2 is a workpiece, 12 is a side cover, 13, 13' is a bellows, 14, 14' is a rolled sheet, 15, 15' is an X-axis slide arm,
16, 16' are Y-axis slide arms, 15a, 1
5'a, 16a are handles, 18, 18' are Y-axis guide members, 19, 19' are winding devices, 21, 21' are X-axis guide grooves, 23 is a processing head through port,
24, 24' are sliding members in the Y-axis direction.

Claims (1)

[Scope of utility model registration request] A side cover with an opening/closing door is provided surrounding the machining section where the wire electrode and the workpiece are arranged facing each other and the machining fluid is sprayed and supplied, and an a pair of Y-axis direction guide members each provided parallel to the Y-axis perpendicular to the axis; and a pair of Y-axis direction guide members each having a long plate shape and arranged with its longitudinal direction parallel to the X-axis, with both longitudinal ends thereof a pair of Y-axis slide arms that move while being guided by a pair of Y-axis slide arms; a winding device provided at the upper end of both sides of the side cover in the Y-axis direction; and one end connected to each of the pair of Y-axis slide arms. two winding sheets whose ends are connected to each of the winding devices and which cover a portion of the upper surface of the side cover except between the pair of Y-axis slide arms; and each of the pair of Y-axis slide arms. an X-axis direction guide groove provided parallel to the X-axis; and a length arranged at a predetermined distance in the X-axis direction between the pair of Y-axis slide arms and separating the pair of Y-axis slide arms by a predetermined distance. a pair of X-axis slide arms having a diameter and moving while being guided by the X-axis direction guide groove; a pair of Y-axis slide members moving while being guided by each of the pair of Y-axis direction guide members; a pair of Xs
One end is connected to each of the axis slide arms, and the other end is connected to each of the pair of Y-axis direction slide members, excluding the area between the pair of X-axis slide arms between the pair of Y-axis slide arms. A wire-cut electric discharge machine characterized by comprising a machining section cover composed of two pieces of bellows that cover a portion of the machining section.