JPS6090634A - Electricity feeding piece fixing means for wire-cut electric discharge machine - Google Patents

Abstract

PURPOSE:To minimize the potential difference between the electricity feeding pieces so as to prevent generation of electric erosion of the electricity feeding piece by pressing a plurality of the electricity feeding pieces from both ends by the fixing means, and fixing them, while by minimizing the spaces between the electricity feeding pieces and by winding an electrically conductive tape around the electricity feeding pieces. CONSTITUTION:A plurality of electricity feeding pieces 1, 1' and an eccentric die 2 are inserted from one end of the main body of a fixing means 11. After the positioning plate 13 is fixed by the positioning plate fixing screw 14, the electricity feeding pieces 1, 1' and the eccentric die 2 are pressed, brought in contact with each other, and fixed by a cap screw 12. Here, as the electricity feeding piece 1, 1' and the eccentric die 2 are placed between the positioning plate 13 and the cap screw 12, the spaces between the electricity feeding piece 1, 1' and eccentric die 2 can be minimized and the contact resistance can be reduced. Then after an electrically conductive tape 3 is affixed on a part of the outside of the electricity feeding pieces 1, 1' and eccentric die 2, the fixing screw 14 is loosened and the positioning plate 13 is rotated to take out the electricity feeding pieces 1, 1' and the eccentric die 2 from the fixing means.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a feeder fixing jig for a wire electrical discharge machining machine that uses a pipe-structured guide to guide a wire electrode in a machining area and perform machining. .

[Prior art]

FIG. 1 is a sectional view showing a feeder wrapped with conductive tape. In the figure, (1) and (1') are the feeder electrons, (
2) is an eccentric die which is arranged between the plurality of feeders (1), (1') and gives forced busyness to the wire electrode; (3) is an eccentric die which is placed between the feeders (1), (1') and It is a conductive tape wrapped around the eccentric die (2).

Conventionally, a conductive tape (3) is used to feed electrons (1), (1'
), multiple feeders (1),
With both ends of (1') free or pressed by hand,
Feed electron (1).

Conductive tape (3) was wrapped around (1').

For this reason, each feeder (1), (1') and the eccentric die (
2) There was a considerable possibility that a gap would occur between the two. Therefore, a potential difference occurs between the feeder electrons, and there is a possibility that electrolytic corrosion of the feeder electrons themselves occurs.

[Summary of the invention]

This invention was made with the purpose of improving such drawbacks, and by press-welding and fixing a plurality of feeders at both ends, minimizing the gap between the feeders, and wrapping a conductive tape, the potential difference between the feeders can be reduced. The present invention provides a feeder fixing jig that minimizes the amount of electricity.

[Embodiments of the invention]

FIG. 2 is a perspective view showing an embodiment of the present invention. In the figure, (1) and (1') represent the same feeder as in Figure 1,
(2) shows an eccentric die. α force has multiple feeders (1)
, (1') and the eccentric die (2) are inserted in a cylindrical shape with a part of the upper part cut out and have an inner diameter slightly larger than the outer diameter of the feeder (1) in order to be inserted with a part of the outer periphery exposed outside. The jig body has a groove, (6) is a holding screw screwed into one end of the groove of the jig body α→, and 03 is fixed to the other end of the jig body α by the positioning plate fixing screw 0◆. This is a positioning plate.

The positioning plate α→ has a structure that can be rotated about the positioning plate rotation fulcrum (G) by loosening the positioning plate fixing screw α→, as shown by the chain line in FIG.

In the feeder fixing jig configured as above, there are a plurality of feeders (1), (1') in the α groove of the jig main body.
Insert the eccentric die (2) from the end of the jig main body α■, and fix the positioning plate α with the positioning plate fixing screw α◆. ,
(1') and the eccentric die (2) are pressed and fixed. In this case, since the plurality of feeders (1), (1') and the eccentric die (2) are held by the positioning plate (G) and the holding screw (2), the feeders (1), (1') The gap between the eccentric die (2) and the eccentric die (2) can be minimized, and the contact resistance can be reduced.

In this state, a plurality of feeder electrons (1), (1')
And conductive tape (3) is placed on a part of the outer circumference of the eccentric die (2).
) is pasted υ. Figure 6 is a cross-sectional view of the conductive tape (3) pasted on part of the outer periphery of the feeders (1), (1') and eccentric die (2) fixed to the jig body α◇. shows. As shown in the figure, attach the conductive tape (3) to the feeder (
1) After fixing the sticker to a part of the outer periphery of , (1') and the eccentric die (2), loosen the positioning plate fixing screw α◆ and rotate the positioning plate α to attach the feeder. (
1), (1') and eccentric die (2) to the jig body O
) to I15! , can be taken out. Then the feeder (
1) Wrap a conductive tape (3) around the outer periphery of (1') and the eccentric die (2).

In the above embodiment, the positioning plate 0 is provided at one end of the jig main body α force, but the same effect can be achieved even if a fixed end is provided in place of the positioning plate 0→. In this case, it is sufficient to remove the holding screw (0) and insert and remove the feeder from the holding screw (2) side.

Further, in the above embodiment, even if the number of feeders is 2 and the force is 116 or more, the same effect can be achieved by increasing the overall length of the jig body.

As described above, according to the present invention, since the gap between the feeders is minimized and the conductive tape is securely wrapped around the outer periphery of the gap, the contact resistance between the feeders can be minimized. This also has the effect of preventing damage to the feeder itself.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a feeder wrapped with conductive tape, Fig. 2 is a perspective view of an embodiment of this invention, and Fig. 3 is a state in which conductive tape is pasted on a part of the outer periphery of the feeder. FIG. (1), (1')...Feeding electron, (2)...Eccentric die, (3)...Conductive tape, 01)...Jig body, (A)...Press screw , α-bu...positioning plate,
0◆...Positioning plate fixing screw, (G)...Positioning plate rotation fulcrum. Note that the same reference numerals in each figure indicate the same or corresponding parts. Figure 1 Figure 3 3

Claims (1)

[Claims] When a conductive tape is wrapped around the feeder of a wire electrical discharge machining machine, the wire electrode is inserted into the wire (a feeder with conductive tape wrapped around it is fixed in the guide). Pressure welding multiple feeders from both ends
- A jig for fixing a feeder for a wire electrical discharge machining apparatus, characterized in that a conductive tape is wrapped around the plurality of feeders by fixing them to minimize gaps between the feeders.