JPH0713929Y2 - Wire cut vise - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a wire cut vise for fixing a workpiece to a wire electric discharge machine.

[Conventional technology]

A conventional wire cutting vise for fixing a workpiece to a wire electric discharge machine is, as shown in Japanese Patent Laid-Open No. 58-40228, a first jaw device for a short leg protruding from one end of a long leg fixed to a table. A sliding device that slides along the long leg and stops sliding on the long leg by a tightening eccentric cam, and a second jaw device provided on the sliding device so as to face the first jaw device. The workpiece is fixed by the first jaw device and the second jaw device which are parallel to each other.

In addition, the short leg and the long leg are arranged between the first jaw device and the second jaw device in the direction of the operating position of the wire by operating a three-point tightening device with an adjusting device provided on the short leg and the long leg. It is possible to orient the workpiece grasped by.

In addition, in order to orient the workpiece, between the workpiece and the machining fluid jet nozzle supported on the column of the wire electric discharge machine, a fixed gap is provided by a stationary pivot ball, There is no adjusting means to eliminate the gap.

[Problems to be solved by the device]

Since it is not possible to make adjustments to eliminate the gap between the nozzle and the work piece, the machining fluid ejected with a strong pressure during rough machining (high-speed machining) collides with the work piece and escapes radially, causing the wire at the machining site The machining fluid does not reach all the way.

For this reason, the sludge cannot be released, which hinders high-speed processing.

Therefore, this invention adjusts the gap between the workpiece and the nozzle to almost zero during high-speed machining, and reduces the level of the workpiece and the parallelism between the workpiece and nozzle during low-speed machining (precision machining). An object of the present invention is to provide a wire cut vise that can be adjusted to form an adjustable gap.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a substrate mounted on a mounting plate fixed on a table of an electric discharge machine with a pivot ball interposed between the substrate and the substrate so that the substrate can be adjusted in level and parallel. Leveling bolts and spring bolts with the operation head exposed at a predetermined position on the upper surface, and at least one of which protrudes forward in parallel with the front edge of the board slides along the front edge of the board, and at an arbitrary position. Wire-cut vise consisting of a pair of holding bodies for holding the work piece with locking means to stop the slide with, and a locate rail of the same level provided on the lower edge of the holding surface of one holding body and the lower edge of the front edge of the base body. In the above, a pivot ball seat is provided on the bottom surface of the board so as to be able to move up and down, and the tip of a bolt screwed from the top surface of the board is brought into contact with the top surface of the seat.

[Action]

When eliminating the gap between the workpiece and the nozzle during high-speed machining (rough finishing), rotating the bolt in the ascending direction causes the spring (spring disc) of the spring bolt to pull the mounting plate toward the board. The seat of the pivot ball rises and the board descends.

Therefore, the work piece held by the holding body of the substrate approaches the nozzle, and the distance between the work piece and the nozzle can be minimized.

In addition, when the bolt is rotated in the descending direction and the seat of the pivot ball is pushed down, the substrate rises, so that the level of the work piece and a gap for parallel adjustment can be obtained between the work piece and the nozzle. You can

[Embodiment] An embodiment of the wire cut vise according to the present invention will be described below with reference to the accompanying drawings.

In the figure, A is a wire cutting vise arranged on a table a of the electric discharge machine.

The wire cut vise A is a substrate 3 placed on a mounting plate 1 fixed on a table a with a pivot ball 2 interposed therebetween, and an upper surface required for the substrate 3 so that the substrate 3 can be adjusted in level and parallel. A leveling bolt 4 and a spring bolt 5 provided with the operation head exposed at a position, and at least one of which protrudes forward in parallel with the front edge of the substrate 3 slides along the front edge of the substrate 3 and is arbitrary. A pair of holding bodies 6, 6 for holding the workpiece B with a lock means for stopping the slide at the position of, and the lower edge of the holding surface of one of the holding bodies 6 and the lower edge of the front edge of the substrate 3 at the same level. It is composed of locate rails 7.

As shown in FIGS. 1 and 3, the above-mentioned holding bodies 6 and 6 are provided with T-grooves 8 between both ends of the front surface of the substrate 3, and the T-grooves 8 project from the end surfaces of both holding bodies 6 and 6. The T-shaped ridge 9 is slidably fitted, and the tip of the pair of first bolts 10 in which the turning operation head is positioned and screwed on the upper surfaces of the holding bodies 6 and 6 is screwed into the T groove 8. Hold it against the bottom and hold the above-mentioned holding body 6
1 was stopped at the right end of the substrate 3 as shown in FIG. 1, and the other holding member 6 was slid when the work B was attached or detached. It is also possible to use the one in which the holding body on the holding side is integrally coupled.

A jaw 11 is provided on the slide-side holding body 6.

Further, as shown in FIG. 2, the leveling bolts 4 are screwed so as to be positioned at two positions, namely, in front of the pivot ball 2 located at the trailing edge of one end of the substrate 3 and at the trailing edge portion of the other end of the substrate 3, A recessed portion 12 that is recessed upward from the lower surface of the substrate 3 is provided, and the tip of the leveling bolt 4 is brought into contact with the upper surface of a vertically movable receiving plate 13 fitted in the recessed portion 12.

Further, as shown in FIG. 2, the spring bolts 5 are inserted into the stepped through holes 14 of the substrate 3 and screwed into the screw holes 15 of the mounting plate 1, and a plurality of spring bolts 5 are mounted on the lower side of the head. A disc spring 16 is fitted into the stepped through hole 14.

Further, a recess 17 is provided on the lower surface of the substrate 3, and a receiving seat 18 that comes into contact with the upper peripheral surface of the pivot ball 2 is fitted in the recess 17 so as to be movable up and down, and the upper surface of the substrate 3 communicates with the recess 17. The tip of the bolt 20 screwed into the screw hole 19 thus provided is brought into contact with the upper surface of the seat 18.

The seat 18 and the bolt 20 may be integrated as shown in FIG.

In the figure, reference numeral 21 denotes a nozzle supported by a column of a wire electric discharge machine so that a machining liquid is jetted to a portion of the grasped workpiece B to be processed by the lower surface wire b. Reference numeral 22 denotes a notch provided on the end surface of the substrate 3 with its upper and lower surfaces opened, 23 denotes a protruding shaft projecting from the upper surface of the mounting plate 1 so as to be fitted into the notch 22, and 24 denotes a position before the notch 22 of the substrate 3 is sandwiched. It is a swivel bolt in which the tip end is brought into contact with the protruding shaft 23 by screwing in from the edge and the rear edge. 25 is a mounting plate 1 and a substrate 3
, Which are provided at both ends of the mounting plate 1, are inserted into the slot 25 from above and the bolts 26 are screwed into the table a so that the upper surface of the mounting plate 1 contacts the lower surface of the head to fix the substrate 1. . 27 is a locking screw for the bolt 20.

With the above configuration, when the bolt 20 is rotated in the ascending direction, the disc spring 16 pulls the substrate 3 toward the mounting plate 1, so that the receiving seat 18 rises and the substrate 3 descends.

For this reason, the workpiece B held between the two holding bodies 6 of the substrate 3
Also, the lower surface of the workpiece B approaches the nozzle 21 and the gap between the workpiece B and the nozzle 21 can be eliminated (very small).

It should be noted that the leveling bolt 4 is rotated and allowed to escape upward before the bolt 20 is rotated in the ascending direction.

After the substrate 3 is lowered, the leveling bolt 4 is rotated to adjust the level and parallel of the substrate 3.

Further, when the bolt 20 is rotated in the descending direction and the receiving seat 18 is pushed down, the substrate 3 rises, so that the workpiece B and the nozzle 21.
A predetermined gap can be obtained between and.

〔effect〕

As described above, according to the wire cut vise of the present invention, the gap between the held workpiece and the nozzle can be adjusted to a state suitable for high speed machining and low speed machining.

[Brief description of drawings]

FIG. 1 is a plan view of a wire cutting vise according to the present invention,
2 is a cutaway front view of the same portion, FIG. 3 is a side view of the same portion, and FIG. 4 is a vertical sectional front view of a portion of a pivot ball. A: Wire cutting vise, a: Table, B: Workpiece, b: Wire, 1 ... Mounting plate, 2 ... Pivot ball, 3 ... Substrate, 4 ... Leveling bolt, 5 ...
Spring bolt, 6 ... Holding body, 7 ... Locate rail, 8 ... T groove, 9 ... Ridge, 10 ... First bolt, 12 ...
… Recessed part, 13 …… Receiving plate, 14 …… Stepped through hole, 15 …… Screw hole, 16 …… Disc spring, 17 …… Concave, 18 …… Receiving seat, 19 …… Screw hole, 20 …… bolt.

Claims (1)

[Scope of utility model registration request] 1. A substrate on which a pivot ball is placed on a mounting plate fixed on a table of an electric discharge machine and an operating head at a predetermined position on the upper surface of the substrate so that the substrate can be adjusted in level and parallel. With locking means for exposing the leveling bolt and the spring bolt, and at least one of which protrudes forward in parallel with the front edge of the substrate, slides along the front edge of the substrate, and stops the slide at an arbitrary position. In the wire-cut vise, which comprises a pair of holding bodies for holding the workpiece, and a locate rail of the same level provided on the lower edge of the holding surface of one of the holding bodies and the lower edge of the front edge of the base body, A wire cut vise in which a ball seat is provided so as to be able to move up and down, and the tip of a bolt screwed from the upper surface of the substrate is brought into contact with the upper surface of the seat.