JPH07195263A - Wire guide device - Google Patents

Abstract

PURPOSE:To dispense with any complex control by letting a swing arm naturally follow in the displacement of a release line position at the supplying reel of a wire at the time of delivery of this wire. CONSTITUTION:When a wire 2 is supplied, an actuator 6 is set up in a state of being unexcited, and simultaneously a clutch 15 cuts off any transmission of driving force of the actuator 6 to a swing shaft 3, making a swing arm 7 set free around this swing shaft 3. With this, any restraint against the swing arm 7 is released. Consequently, the swing arm 7 comes free. In this state intact, a reel 4 is driven in the delivery direction of the wire 2 by the driving means 6. At this time, with the movement of a release line position of the wire 2, the swing arm 7 is automatically followed in the movement of this release line position of the wire 2 on a peripheral surface of the reel 4 by dint of torque in the rocking direction to be produced in a groove part of a first roller 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a wire saw,
Regarding wire guide device for wire feeding / winding

[0002]

2. Description of the Related Art In the conventional wire guide device of this type, a pair of wires is wound in a process of unwinding the wire from a reel of aligned winding and sending it out, or in a process of winding the wire around the reel in an aligned winding at a constant pitch. Through the touch rollers of
By electrically detecting the contact of the wire with the touch roller and controlling the motor based on this detection signal, the traverser table follows the movement of the wire unwinding position and winding position on the outer circumference of the reel. ing.

[0003]

However, in the wire guide device, since the traverser table and the touch roller are indispensable structures, there is a problem that the structure is complicated. Further, the contact detection by the touch roller is discontinuous, and moreover, since the touch roller rotates due to inertia even when it is in non-contact, the control amount becomes excessive, and accurate continuous follow-up control is difficult. there were.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to enable a wire to be unwound at a right angle to the reel axial direction when the wire is sent out by a simple structure, and to wire the reel when winding the wire. It is to be able to wind in a state perpendicular to the axial direction.

[0005]

In the wire guide device of the present invention, the wire is multi-wound between a plurality of grooved main rollers in the process of transferring the wire from the wire supply reel to the wire winding reel. In a wire saw that turns to form a wire row, presses the work piece against the wire row, and cuts the work piece into slices with a cutting liquid, in the direction orthogonal to the rotation axis of the reel for wire supply and winding. The swing shaft has a swing shaft, and a swing arm swinging substantially parallel to the rotation shaft of the reel is attached to the swing shaft, and a first roller for guiding a wire is rotatably attached to one end of the swing arm. Centered on
A weight, which is approximately balanced with the weight of the first roller for guiding the wire, is attached to the other end of the swing arm, and a second roller for guiding the wire guided by the first roller is provided in the vicinity of the swing shaft. The drive device includes a drive unit that gives a swinging motion to the swing arm about an axis, an angle sensor that detects a swing angle of the swing shaft, and a clutch that intermittently transmits the drive force of the drive unit to the swing arm. .

[0006]

[Outline of Wire Saw] FIG. 1 shows a wire saw 31.
The wire saw 31 moves the wire 2 from the wire supplying reel 4 to the wire winding reel 4 that winds the wire 2 by a large number of guide rollers 29. 2 is multiply wound to form a wire row, and the work piece 34 is cut into slices with the cutting fluid 33 while pressing the work piece 34 against the wire row. Then, the wire guide device 1 of the present invention is incorporated in the vicinity of the wire supply reel 4 or the wire winding reel 4.

[0007]

FIG. 2 shows a wire guide device 1 for both wire supply and winding. The wire guide device 1 includes a reel 4
Has a swing shaft 3 in a direction orthogonal to the rotary shaft 5, and a swing arm 7 swinging substantially parallel to the rotary shaft 5 of the reel 4 is attached to the swing shaft 3, and the wire 2 is attached to one end of the swing arm 7. A first roller 8 with a groove for guiding is rotatably attached by a roller shaft 11, and a weight 23 about the weight of the first roller 8 side for guiding the wire 2 is swung about the swing shaft 3 as a center. A second roller 22 attached to the other end of the arm 7 for guiding the wire 2 guided by the first roller 8 in the vicinity of the swing shaft 3, and swings on the swing arm 7 about the swing shaft 3. An actuator 6 as a driving means for giving a motion, an angle sensor 9 for detecting a swing angle of the swing shaft 3, and a driving force of the actuator 6 for a swing arm 7. And a clutch 15 for intermittently transmit.

The number of rotations of the reel 4 is detected by the rotation detector 19 connected to the rotation shaft 5, and becomes a signal of 100 pulses for each rotation, for example. The signal of this pulse is input to the control unit 10. The control unit 10 gives a drive command proportional to the rotation speed to the actuator 6 based on the signal detected by the rotation detector 19.

In the case of supplying the wire 2, the actuator 6
Is set to a non-excited state, and at the same time, the clutch 15
Cuts off the transmission of the driving force of the actuator 6 to the swivel shaft 3 to make the swing arm 7 free around the swing shaft 3. This releases the restraint force on the swing arm 7. As a result, the swing arm 7 becomes free. In this state, the reel 4 is driven in the feeding direction of the wire 2 by a driving means (not shown). At this time, due to the torque in the swinging direction generated in the groove portion of the first roller 8 with the movement of the unwinding position of the wire 2, the swing arm 7 moves to the unwinding position of the wire 2 on the outer peripheral surface of the reel 4. Follow movement automatically.

As described above, the wire 2 can be automatically released in a vertical state with respect to the rotating shaft 5 simply by setting the actuator 6 in a non-excited state and disconnecting the driving force transmission system with the clutch 15. No complicated control is required. Therefore, when the wire guide device 1 is configured only for wire supply, the actuator 6, the clutch 15 and the like are unnecessary and can be omitted.

In the case of winding the wire 2, the actuator 6 is set in an excitable state and the clutch 1
Reference numeral 5 connects the drive shaft of the actuator 6 to the swing shaft 3 by excitation. In this state, the reel 4 is driven in the winding direction of the wire 2 by a driving means (not shown).
During this time, the rotation detector 19 detects the number of rotations of the reel 4 per unit time and sends a signal of 100 pulses to the control unit 10 for each rotation, for example.

The control unit 10 gives the actuator 6 a drive command of a swing angle proportional to the rotation speed based on the pulse signal detected by the rotation detector 19. As a result, the swing arm 7 is driven by the actuator 6 and swings in the winding guide direction of the wire 2 by a required swing angle. At this time, since the winding position of the wire 2 moves along the axial direction of the reel 4, the wire 2 is wound around the reel 4 in an aligned state at a predetermined pitch.

During this control, the angle sensor 9 detects the actual swing angle of the swing arm 7 and sends a signal of the swing angle to the control unit 10. The control unit 10 performs feedback control using the signal of the swing angle as a feedback signal.

By the way, as the winding diameter of the wire 2 on the reel 4 increases, the winding pitch becomes smaller than that when the winding diameter is small, and the central portion of the reel 4 changes due to the change of the swing angle of the swing arm 7. Thus, the winding pitch becomes large, and the winding pitch becomes small at both ends of the reel 4. However, in this case, the winding pitch error at the central portion and the winding pitch error at both end portions have practically no problem, and the present invention ignores them.

If the actuator 6 does not generate a restraining force on the swing arm 7 when the actuator 6 is set in the non-excited state, the swing arm 7 becomes free by setting the non-excited state. The clutch 15 may be omitted.

[0016]

[Embodiment of Driving Means] As shown in FIG. 3, the driving means is a sector gear 12 provided at the lower end of the swing arm 7, a pinion 13 meshing with the sector gear 12, and a motor having the pinion 13 attached to a motor shaft 14. 16 and 16. Engagement between the sector gear 12 and the pinion 13 can be interrupted by energizing / de-energizing the coil 24 of the clutch 15.

The drive means shown in FIG. 4 employs a linear motor 17. The linear motor 17 is provided at a lower end of the swing arm 7 with a yoke 18 extending in a linear direction, a magnet 20 facing the yoke 18 and having different magnetic poles alternately arranged along the linear direction, and penetrating the yoke 18. Moving coil 2 that can be moved linearly
When the wire 2 is delivered, the wire 2 is automatically unwound in the perpendicular direction by turning off the power supply to the movable coil 21.

[0018]

As is apparent from the above description, according to the present invention, when the wire is fed, the swing arm naturally follows the displacement of the wire unwinding position on the reel for supplying the wire, which is complicated. It is possible to eliminate the need for control, and at the time of winding the wire, by controlling the swing of the swing arm according to the rotation of the reel, it is possible to perform aligned winding,
The configuration of the control system can be simplified, and by operating the clutch and actuator, the same device can also be used for feeding and winding the wire, so the wire saw can be used to arbitrarily set the wire transfer direction. it can.

[Brief description of drawings]

FIG. 1 is a schematic side view of a wire saw.

FIG. 2 is a perspective view of a wire guide device.

FIG. 3 is a perspective view showing an embodiment of driving means.

FIG. 4 is a perspective view showing an embodiment of driving means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire guide device 2 Wire 3 Swing shaft 4 Reel 5 Rotating shaft 6 Actuator as driving means 7 Swing arm 8 First roller 9 Angle sensor 10 Control section 15 Clutch 16 Motor as driving means 17 Linear motor as driving means 19 Rotation detector 22 Second roller 23 Weight

Claims (3)

[Claims] 1. A wire is multi-wound between a plurality of grooved main rollers in the process of transferring the wire from a wire supply reel wound with a wire to a wire winding reel for winding the wire. A wire saw that forms a wire row, presses the work piece against the wire row, and cuts the work piece into slices with a cutting fluid, and has a swing axis in a direction orthogonal to the rotation axis of the wire supply reel. Then, attach a swing arm swinging substantially parallel to the rotation axis of the wire supply reel to the swing axis,
A first roller that guides the wire discharged from the wire supply reel is attached to one end of the swing arm, and a weight that is approximately balanced with the weight of the first roller side that guides the wire around the swing shaft is provided. A wire guide device for wire supply, comprising a second roller attached to the other end of the swing arm and for guiding the wire guided by the first roller in a predetermined direction in the vicinity of the swing shaft. . 2. A wire is multi-wound between a plurality of grooved main rollers in the process of transferring the wire from the reel for winding the wire wound to the reel for winding the wire. A wire row to form a wire row, press the work piece against the wire row, and cut the above-mentioned work piece into a slice with cutting fluid.In a wire saw, set the swing axis in the direction orthogonal to the rotation axis of the wire winding reel. A swing roller swinging substantially parallel to the rotation axis of the wire winding reel is attached to the swing shaft, and a first roller for guiding the wire to the winding reel is attached to one end of the swing arm; A second roller for guiding the wire discharged from the side of the plurality of grooved main rollers to the first roller is provided in the vicinity of the swing shaft, and the swing shaft is used as a center. A driving means for imparting an oscillating motion to the swing arm Te, the wire guide device for the wire winding, characterized in that it has a an angle sensor for detecting the swing angle of the swing axis. 3. A wire is multi-wound between a plurality of grooved main rollers in the process of transferring the wire from a wire supply reel wound with a wire to a wire winding reel for winding the wire. A wire saw that forms a wire row, presses the work piece against the wire row, and cuts the work piece into slices with cutting fluid.Swing in the direction orthogonal to the rotation axis of the reel for wire supply and winding. A swing arm having a shaft and swinging substantially parallel to the rotation shaft of the reel is attached to the swing shaft, a first roller for guiding a wire is rotatably attached to one end of the swing arm, and the swing shaft is attached to the swing shaft. A weight, which is centered and is almost balanced with the weight on the side of the first roller for guiding the wire, is attached to the other end of the swing arm,
A second roller that guides the wire guided by the first roller in the vicinity of the swing shaft, a drive unit that causes the swing arm to swing about the swing shaft, and a swing angle of the swing shaft. An angle sensor for detecting
A wire guide device for both wire feeding and winding, comprising: a clutch for intermittently transmitting the driving force of the driving means to the swing arm.