JP2002292526A - Jig for wire cut electric discharging machining - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig by which a positioning of processing materials on a base plate of a wire cut electric discharge machine is facilitated, and working man-hours for the positioning are reduced. SOLUTION: By constituting key ways 5a, 5b, 6a, on a base plate 2, positioning of a processing raw materials is facilitated. And only a single base plate is used in the wire cut electric discharge machine, a plurality of dimensions of external diameter part of the processing raw materials are coped with by exchanging an interchangeable jig.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In a wire-cut electric discharge machine and a machining apparatus, when a workpiece is placed on a base plate and the workpiece is positioned,
The present invention relates to a wire-cut electric discharge machining jig which simplifies positioning of a machining material and can cope with an object to be machined having a plurality of sizes.

[0002]

2. Description of the Related Art Wire-cut electric discharge machining is a machining method in which a wire electrode cuts a machining material into a predetermined contour shape. The following steps are taken in the processing. First, as shown in FIG. 8, a base plate (1) on which a processing material (8) is placed is provided with a base hole (3) for operating a wire electrode. It is necessary to place it around the base hole (3). For this reason, the worker places the working material (8) in the amount of the marking material (8) based on the mark (7) previously engraved on the base plate (1). Next, coordinates for moving the wire electrode with respect to the processing material (8) are determined.
As shown in FIG. 3, the axial center of the working material (8) is indexed at least at three or more points by the electric discharge machining wire (10) on the inner surface of the hollow hole (9) of the working material (8). When it is necessary to position the processing material (8) in the rotational direction, a reference surface (11) is pre-processed as shown in FIG. 9 and a magnet fixed dial gauge or the like magnetically attached to the upper head (15) is used. Then, the tip of the gauge is applied to the reference surface (11), and the table (13) is reciprocated in the X direction shown in FIG. Fine-tune the position in the rotation direction.

In order to use a single wire-cut electric discharge machine for machining a plurality of machining materials (8) having different external dimensions, a base plate (1) on which the machining material (8) is placed. In addition, it is necessary to cope with a large number of desired processing material diameters by, for example, forming a plurality of base holes (3) having a diameter matching the external dimensions to be processed.

[0004]

As in the prior art, the initial positioning when the work material is placed on the base plate (1) is based on a mark (7) previously engraved on the base plate (1). It depends on the operator's eyesight of the axis of the hole (3). Therefore, the center of each of the processing material (8) and the base hole (3) is inaccurate or inaccurate. In addition, since the worker is careful in placing the work material, it takes much time to perform accurate positioning and fix the work material (8).

Further, the number of holes formed in one base plate (1) for fixing the processing material (8) is limited. Therefore, the hole diameter corresponding to the processing material (8) required for processing is also limited. Therefore, in order to support a plurality of processing material diameters with the same apparatus, it is necessary to prepare a plurality of base plates (1) each having a different hole diameter. Therefore, conventionally, the manufacturing cost of the base plate (1) was increased, and the replacement of the base plate (1) itself required a lot of man-hours for changing the steps.

[0006]

According to the present invention, when a machining material having a hollow hole is subjected to wire-cut electric discharge machining, a base plate on which the machining material is mounted is connected to at least one base hole and the base hole. An object of the present invention is to provide a wire-cut electric discharge machining jig having at least one keyway, wherein the keyway guides a key or a locking tool for positioning the work material. As described above, since the key groove is provided to guide the key or the locking tool,
The positioning of the processing material can be easily performed.

[0007] The base hole has a fitting body fitted in its shape and having a new hollow hole at the center thereof, and the fitting body is provided with at least one continuous with the keyway of the base plate. It has a new keyway. Therefore, by fitting a plurality of types of fitting bodies based on the base hole, it is possible to cope with a plurality of processing material diameters.

[0008]

FIG. 1 shows an embodiment according to the present invention.
This will be described with reference to FIGS. As shown in FIGS. 3 to 5, the working material (8) in this embodiment is a cylinder in which a small-diameter portion (8a), a medium-diameter portion (8b), and a large-diameter portion (8c) continue on the same axis. And a hollow hole 9 is provided. The large diameter portion (8c) of the processing material (8) has a reference surface (11) and a keyway (1) on a diagonal line centered on the axis.
2) is provided.

As shown in FIG. 1, the base plate (2) of the present invention has a base hole (3) at the center thereof. The base hole (3) has a large-diameter hole (3
a) and a small-diameter hole (3b) on the lower side,
The central axis of the large diameter hole (3a) and the small diameter hole (3b)
Are provided substantially on the same line. Therefore,
An upper plate surface (3b1) is provided above the small diameter portion (3b). The base plate (2) has a large-diameter hole (3) of the base hole (3).
three keyways (5a, 5b,
6a) is provided.

On the other hand, an exchange jig (4) fitted into a base hole (3) of the base plate (2) will be described with reference to FIGS. The replacement jig (4) includes a large-diameter ring portion (4a) fitted with the outer diameter of the large-diameter hole portion (3a) of the base hole (3), and a small-diameter hole portion (4) of the base hole (3). 3b)
The small-diameter ring part (4b) fitted to the outer peripheral dimension of the center hole (4
c). Further, three key grooves (5c, 5d, 6b) extending radially from the large-diameter ring portion (4a) are provided.

9 and 10, projections which fit into the key grooves (5a, 5b, 5c, 5d) of the base plate (2) and the exchange jig (4) at the center as shown in FIGS. There is a V block (13a, 13b) having a part (16). The protrusion (16) of the V block (13a, 13b)
To the keyway (5) of the base plate (2) and the exchange jig (4).
a, 5b, 5c, and 5d), the center line (21) of the V-shaped portion (19, 20) of the V-block serves to substantially coincide with the center of the base hole (3). Here, the reason why the center line (21) of the above-mentioned V-shaped portions (19, 20) of the V-blocks (13a, 13b) in this case substantially coincides with the center of the base hole (3) will be described. As shown in FIG. 11, the V-shaped portions (19, 20) are symmetric with respect to the center line of the keyway (16). The processed material in this case is a large outer diameter part (8
c) is a substantially perfect circle, so the large outer diameter portion (8c) is connected to the V-shaped portion (1
9, 20), the central axis of the large outer diameter portion (8c) is substantially arranged on the center line of the key groove (16).

Next, a method of placing a processing material (8) on the base plate (2) of the present invention will be described. In this embodiment, when processing is desired, the large diameter portion (8c) of the processing material (8)
An exchange jig (4) having a center hole (4c) set smaller in advance is selected and fitted to the base hole (3) of the base plate (2). Next, the processing material (8) is placed on the upper surface of the exchange jig (4), and one key (6) is inserted into the key groove (6a) of the base plate (2) and the key groove (6b) of the exchange jig (4). ) And the keyway (12) of the processing material (8). Next, the pair of V blocks (13a, 13
b) to the processing material (8) and the pair of V blocks (13).
a, 13b) so that the V-shaped portions (19, 20) abut against the key grooves (6) of the base plate (2).
a), the key groove (6b) of the exchange jig (4), or both key grooves (6a, 6b). At this time, as shown in FIG. 7, the V-shaped portions of the V blocks (13a, 13b) are brought into contact with the processing material (8) from the left and right as viewed from the operator. Therefore, the pair of V blocks (13a, 1
3b) and the key (6), the center axis of the center hole (4c) of the exchange jig (4) substantially matches the center axis of the processing material (8). Further, the angle of the processing material (8) in the substantially rotating direction can also be determined by the key (6).

In this embodiment, when it is desired to position the angular position in the rotational direction with high accuracy, the key grooves (6a, 6b) of the key (6), the base plate (2) and the replacement jig (4) are required. ) Is provided with a predetermined substantially gap, and the key (6) is fitted. Therefore, as described in the prior art, the position of the processing material (8) in the rotation direction is finely adjusted using a magnet-fixed dial gauge or the like magnetically attached to the upper head (12) until the deflection becomes zero. Without relying on the skill of the operator, the key (6) can be used for reliable positioning and the number of steps for the fine adjustment can be reduced.

In this embodiment, an exchange jig (4) having a center hole diameter matched to the large diameter portion (8c) of the processing material (8) according to the number of types of the processing material (8) desired to be processed. Are manufactured and stored, and are appropriately replaced with the exchange jig (4) corresponding to the processing material (8) desired to be processed. As a result, only one base plate (2) is required,
It may be left fixed. Therefore, heavy work such as replacing the base plate can be avoided.

In this embodiment, the fine adjustment work man-hour is reduced.
In addition to the reduction in the number of steps for placing the work material by replacing the replacement jig, the number of steps for the work can be reduced by about 30% compared to the related art.

[0016]

According to the present invention, since the keyway is used at the time of the positioning, the center axis of the base hole and the center axis of the processing material can be easily made to substantially coincide with each other, as compared with the conventional method of positioning the processing material by the scale of the operator. And the number of man-hours for the positioning operation can be reduced. Further, fine adjustment of the rotational direction positioning of the processing material is substantially easier to perform than the conventional fine adjustment work because the rotation position is substantially determined by a key, and the number of the fine adjustment work steps can be reduced.

By using an exchange jig, only one base plate on which the work material is placed may be fixed to the wire-cut electric discharge machine, leading to a reduction in base plate production costs. Further, since the exchange jig can be easily attached and detached, it is possible to cope with the outer diameter of a plurality of processing materials by exchanging the exchange jig, thereby reducing the number of steps for placing the processing material.

[Brief description of the drawings]

FIG. 1 is a perspective view of a base plate according to the present invention.

FIG. 2 is a perspective view of an exchange jig according to the present invention.

FIG. 3 is a cross-sectional view of a state in which a processing material is placed on a base plate according to the present invention and a wire is passed through the inner diameter of the material.

FIG. 4 is a front perspective view of a processed material according to the present invention.

FIG. 5 is a perspective view from the side of the processed material according to the present invention.

FIG. 6 is a cross-sectional view showing a state in which a processing material according to the present invention is positioned by a V block.

FIG. 7 is a plan view of a base plate in a state where the processing material according to the present invention is positioned by a V block and a key.

FIG. 8 is a perspective view of a base plate in a conventional example.

FIG. 9 is a front view of a conventional wire cut electric discharge machine.

FIG. 10 is a side view of a V-block according to the present invention.

FIG. 11 is a front view of a V block according to the present invention.

[Explanation of symbols]

 2. . . Base plate 4. . . Replacement jig 5a. . . Keyway 5b. . . Keyway 6. . . Key 6a. . . Keyway. . Processing material 13a. . . V block 13b. . . V block

Continuation of front page (72) Inventor Hitoshi Ito 1 Wanowari, Arao-cho, Tokai-shi, Aichi F-term in Aichi Steel Corporation (reference) 3C059 AA01 AB05 JA03 3C060 AA00 CA05

Claims (2)

[Claims] When a machining material having a hollow hole is subjected to wire-cut electric discharge machining, a base plate on which the machining material is mounted has at least one base hole and at least one keyway connected to the base hole. A wire-cut electric discharge machining jig, wherein the key groove guides a key or a locking tool for positioning the work material. 2. The device according to claim 1, wherein the base hole has a fitting body fitted with a shape thereof and having a new hollow hole at the center thereof, and the fitting body is the same as a keyway of the base plate. A wire-cut electric discharge machining jig having at least one new keyway continuous on a line.