KR20090017411A - Wire winding method and wire winding machine - Google Patents

Abstract

Wire rolling method and the wire winding machine are provided that the wire is rolled on the rod automatically and the wire line is formed. A wire rolling method comprises following processes: an admission angle setting process of setting up the admission angle of the wire(32) formed owing to the vertical direction and entry direction as the constant value within range of 1° to 15°; a reference point determining process setting the continuous imaging device so that the imaging reference point be put on the wire; an error determination process for determining whether the wire crosses the predetermined tolerance range to the imaging reference point or not; a speed control process for controlling the rotation speed of rod and moving speed of movable table.

Description

WIRE WINDING METHOD AND WIRE WINDING MACHINE}

TECHNICAL FIELD The present invention relates to a wire winding method and a wire winding machine, and more particularly, to a wire winding method and a wire winding machine for forming a wire rod used in a rod coating device for thin layer coating.

One application apparatus for applying a coating liquid to a wafer is, for example, a rod application apparatus as shown in Patent Document 1, and one of the rods used for application of the rod is wound around a rod having a round rod shape to produce a line of wire. There is a wire rod formed. It is important to use a wire rod without a gap because this wire rod has a gap (wrong winding density) between the rows of wire rows, causing coating failure.

The main cause of the gap between the rows of wire rows is a winding failure.

Conventionally, the winding method of the wire for forming the wire rod is performed by the user using the wire rod in an original manner, and is not called a standard wire winding method, but it is a method of winding by hand or a winding method using a conveying mechanism of a lathe. It is called this.

As shown in FIG. 7, the method of winding by hand of a wire is performed every time the wire is wound while rotating both ends of the rod 1 serving as the core of the wire rod while being supported by a bearing (not shown). It is a winding method which forms the wire row | route 4 which wound the wire 3 on the rod surface by winding up while winding up the wire row | line 4 with the comb member 2. As shown in FIG. At the tip of the comb member 2, a groove 5 for fitting into the rod 1 is formed.

On the other hand, the wire winding method using the conveying mechanism of a lathe is equipped with the guide member which guides the entry of the wire sent to the rod in the support part which supports the tool of a lathe, rotating by a motor etc. in the state which supported both ends of the rod to the bearing. It is a method of winding while guiding the entry of the wire to the rod with the guide plate while transferring the guide member in the axial direction of the rod by the transfer mechanism of the lathe.

However, the method of winding by hand requires the operator to support the comb member 2 by hand, which not only can not be automatically wound, but also requires a long time to form one wire rod, which is disadvantageous in efficiency. . In addition, since the operator cannot uniformly press the wire row 4 with the comb member 2, there is a drawback that a gap is formed between the rows of the wire row 4 when viewed microscopically. On the other hand, the method using the feed mechanism of the lathe has a merit that can automate the wire winding, but the feed speed of the guide member and the rotation speed of the rod cannot be synchronized with high precision, and can be set to the feed speed of the desired wire diameter. Therefore, there is a drawback that a small gap is likely to occur between the rows of wire rows.

From this background, Patent Document 2 proposes an automatic wire winding method and apparatus aiming at solving the conventional drawbacks. Patent document 2 is to wind the wire by moving the traverse supplying the wire parallel to the rod while rotating the rod, based on the width dimension obtained by measuring the width dimension and the winding angle of the wire supplied from the wire sequentially Determine a reference value for synchronizing the traverse movement and the rotation of the rod, determine the correction amount based on the difference between the winding angle obtained by the measurement and the target value of the winding angle, and correct the default value by the correction amount. At least one of the rotational speed of the rod and the moving speed of the traverse is controlled based on the value after the correction.

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-87697

Patent Document 2: Japanese Patent No. 3306322

However, although the wire winding method and apparatus of Patent Document 2 is based on synchronizing the rotational speed of the rod and the moving speed of the traverse, the wire wire diameter, which is one factor that cannot be synchronized, is sequentially measured and corrected, In addition to variations in wire diameter, there are various factors such as changes in rod diameter in the rod length direction and surface roughness distribution on the rod surface. In addition, since the measured wire wire diameter is corrected by using a complex calculation formula, there is a problem in that the method and apparatus are complicated.

For this reason, the winding method and apparatus which can automatically winding a wire more easily and can make a winding density constant by reliably eliminating a clearance gap between wire rows are desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the wire can be formed by automatically winding the wire in the rod with a simple configuration, and the winding density can be made constant by reliably eliminating the gap between the wire rows. In addition to eliminating application failures such as bar stripe due to gaps during application, and providing a wire winding method and a wire winding machine that can eliminate waste of wires due to useless winding work or poor winding. For the purpose of

Claim 1 of the present invention, in order to achieve the above object, while rotating the rod of a round rod shape around the shaft center, and the wire dispensing means for discharging the wire in parallel to the rod in the moving table to change the dispensing position of the wire A wire winding method for winding a wire from one end side to the other end side of the rod while moving to form a wire row wound the wire on the rod surface, wherein the entry direction of the wire entering the rod from the feeding position is determined. While inclining toward the wire row already wound with respect to the direction perpendicular to the axis of the rod, the angle of entry of the wire formed by the vertical direction and the entry direction is set to a constant value within the range of 1 ° and less than 15 °. Entry angle setting process, the rod winding position of the wire set to the entry angle A reference point determination step of imaging the vicinity with a continuous imaging means and setting the continuous imaging means such that the imaging reference point is placed on the wire on the image, and the rotational circumferential speed of the rod and the moving speed of the moving table at the same speed. A deviation determination step of continuously imaging the wire with the continuous imaging means while winding the wire on the rod, and determining whether the wire is shifted beyond a predetermined allowable range in the rod parallel direction with respect to the imaging reference point, and the deviation If it is within a predetermined allowable range, the rotational circumferential speed of the rod and the moving speed of the moving table are maintained at the developing speed, and when the deviation is exceeded a predetermined allowable range, the rotational circumferential speed and movement of the rod enter the predetermined allowable range. Control the speed of at least one of the table's moving speeds Provided is a wire winding method comprising a speed control step.

According to claim 1, First, in the entry angle setting step, the entry direction of the wire entering the rod from the wire delivery position moving in parallel to the rod is inclined toward the wire row side already wound with respect to the direction perpendicular to the rod axis The entry angle of the wire formed by the vertical direction and the entry direction is set to a constant value within the range of 1 ° and less than 15 °.

This is because when the entry angle of the wire is less than 1 °, a gap is easily formed between the wire rows. When the wire is more than 15 °, the gap is easily overwhelmed with the wire row already wound and burned easily. Moreover, it is more preferable to set the entrance angle in the range of 3 degrees-10 degrees, and it is especially preferable to set in the range which is 5 degrees-8 degrees. In this case, before entering into automatic winding, the wire is wound several times on the rod by the worker's manual work in advance, and a little wire row is formed.

Next, in the reference point determination step, the image of the vicinity of the rod winding position of the wire set at the entry angle of the constant value is imaged by the continuous imaging means, and the continuous imaging means is set so that the imaging reference point is placed on the wire on the image.

Next, in the misalignment determination process, the wire is continuously imaged by the continuous image pickup means while automatically winding the wire to the rod with the rotational circumferential speed of the rod and the movement speed of the moving table at the same speed, and the wire position is loaded with respect to the imaging reference point. It is determined whether or not the deviation exceeds the predetermined allowable range in the parallel direction. Thereby, the entry angle of the wire which affects the winding precision of the wire can be grasped | ascertained as the deviation of the rod parallel direction of the wire position with respect to an imaging reference point. The deviation of the wire position with respect to the imaging reference point appears in the form of all variations of the entry angle such as the wire wire diameter fluctuation, the rod diameter fluctuation in the rod length direction, and the surface roughness distribution of the rod surface.

Next, if the deviation is within the predetermined allowable range in the speed control step, the rotational circumferential speed of the rod and the moving speed of the moving table are maintained at the developing speed. Keeping at the developing speed does not mean that the rotational circumferential speed of the rod and the moving speed of the moving table are the same speed. If the deviation is within a predetermined allowable range, the rotational circumferential speed of the rod and the moving speed of the moving table may be different. For example, if there is no deviation in the wire position relative to the imaging reference point even if the wire diameter changes, it is considered that other factors, such as the surface roughness distribution of the rod, cancel the variation in the wire diameter. Keep the table moving speed at the developing speed. And when a deviation exceeds a predetermined allowable range, the speed | rate of at least one of the rod rotation main speed and the moving speed of a wire delivery position is controlled so that the said shift may enter into a predetermined allowable range.

As described above, in the present invention, the deviation of the wire position appearing in the deviation determination step with respect to the imaging reference point is represented in the form including all factors in which the entry angle fluctuates, and after setting the entrance angle (winding angle) in advance, By correcting the misalignment of the wire position, it is possible to perform a good winding with a constant winding density without performing wire wire diameter measurement or complicated calculation.

The method according to claim 1, wherein the predetermined allowable range of the deviation is within a set entry angle ± 1 ° when viewed from the set entry angle.

Claim 2 stipulates a preferable allowable range of the above-mentioned deviation for winding with good accuracy with a constant winding density, and it is preferable that the deviation is within a set entry angle ± 1 ° when viewed as a change in the set entry angle. As a result, the pressing force to the end of the wire row of the wire entering the rod can be prevented from being disturbed, so that the winding can be performed with high accuracy. A more preferable allowable range of misalignment is within the set entry angle ± 0.8 °, particularly preferably within ± 0.05 °.

Claim 3 is Claim 1 or 2, The said imaging reference point is characterized by being within 28 mm from the wire winding position to the said rod.

By setting the imaging reference point at a position close to the wire winding position to the rod, it is possible to accurately grasp the variation in the entry angle of the wire as a deviation of the wire position in the rod parallel direction, and more accurately monitor the deviation of the wire position from the imaging reference point. Because there is.

The rotating table according to any one of claims 1 to 3, wherein a rotating table is rotated on the moving table with a winding position at which the wire is wound on the rod, and the feeding means is supported on the rotating table. In addition, the continuous imaging means is supported on the moving table, it characterized in that the rotation in accordance with the magnitude of the change of the actual entry angle to the set entry angle.

According to claim 4, the rotary table which rotates around the rotational position by which the wire was wound by the rod on the movement table was provided, the dispensing means was supported on the rotating table, and the continuous imaging means was supported on the moving table. . As a result, even if a factor causing a change in the entry angle, such as a wire wire diameter fluctuation, even a little occurs, the turntable rotates in accordance with the magnitude of the fluctuation and appears as a deviation of the wire position with respect to the imaging reference point. Thereby, since the shift | offset | difference of a wire position can be grasped with high precision, the predetermined permissible range of a shift | offset can be controlled with high precision within 1 degree mentioned above.

Claim 5 is any one of Claims 1-4 characterized by using the thing of the nominal difference of 0.5 micrometer of wire diameters as said wire.

Among the factors such as the wire wire diameter fluctuation, the rod diameter fluctuation in the rod length direction, and the surface roughness distribution of the rod surface, the major deviation of the wire position with respect to the imaging reference point is the wire wire diameter fluctuation, and the deviation of the wire diameter is within 0.5 μm. Use of the in wire reduces the deviation of the wire position. As a result, the frequency at which the wire position with respect to the imaging reference point deviates from the predetermined allowable range is reduced, so that the winding can be performed with good accuracy with a constant winding density. More preferably within 0.2 μm of nominal.

Claim 6 is a inspection process of Claim 5 provided with the inspection process of inspecting whether the deviation of the wire wire diameter is less than 0.5 micrometer before winding the said wire to the said rod.

Since the inspection process of checking whether the deviation of wire wire diameter is within 0.5 micrometer of nominal was provided, the wire with small deviation of wire diameter can always be used for winding.

Claim 7 is characterized in that a lubricant is applied to the wire at any one of claims 1 to 6 at the time of winding to the rod or at the time of winding.

According to claim 7, the lubricant is coated on the wire so that the wire can be wound so that the frictional resistance between the wires generated when the wire is given the entry angle can be reduced, and the winding with higher accuracy can be performed. As a lubricant, grease is preferable, for example.

Claim 8 of the present invention, in order to achieve the above object, while rotating the rod of a round rod-shaped centered around the shaft, while moving the wire delivery position parallel to the rod, one rod from one end to the other end side A wire winding machine for winding a wire to form a row of wires wound around a wire on a surface of the rod, comprising: rotating means for rotating the rod about an axis center, a moving table moving along an axial direction of the rod, on the moving table A rotary table supported to be rotatable and having a dispensing means for dispensing the wire and having a rotation center formed at a winding position in which the wire is wound on the rod, supported on the moving table and fed out from the dispensing means to the rod; In addition to photographing the incoming wire, On the basis of the imaging means set so that the imaging reference point is placed on the existing wire, and the imaging result of the continuous imaging means, it is determined whether or not the wire is shifted beyond the predetermined allowable range in the rod parallel direction with respect to the imaging reference point. When the deviation is within a predetermined allowable range, the rotational circumferential speed of the rod and the moving speed of the moving table are maintained at a developing speed, and when the deviation is exceeded a predetermined allowable range, the rotation of the rod enters the predetermined allowable range. A wire winding machine comprising control means for controlling at least one of a circumferential speed and a moving speed of a moving table.

Claim 8 of this invention concretely comprises the apparatus which implements the wire winding method of this invention.

The method according to claim 8, characterized in that the dispensing position correcting means for constantly correcting the dispensing position sent from the dispensing means to the rod on the rotary table.

Thereby, even if the conveyance position of the wire from a delivery means changes, it is possible to prevent it from affecting a wire entry angle. In addition, in the case where the sending means releases the wire from the fixed position, the sending position correcting means is not necessary.

Claim 10 is Claim 8 or 9 WHEREIN: The wire tension means which tensions the wire which enters a rod is characterized by the above-mentioned.

As a result, the component force in the rod axial direction, which is the pressing force to the end of the wire string, is effectively generated, so that the wire string wound without wires on the rod surface can be formed more precisely. Although the wire tension varies depending on the wire wire diameter, it is better to wind the wire as strongly as possible to the rod. Therefore, it is preferable to apply tension to near the wire tensile strength, which is the upper limit of the range where the wire is not broken.

Claim 11 is any one of Claims 8-10 WHEREIN: The rod tension means which applies the tension tension of the axial direction is provided in the said rod, It is characterized by the above-mentioned.

Since the rod is thin and long, it is easy to bend and rotational vibration easily occurs when the rod is rotated. However, the rotational vibration can be prevented and the winding accuracy of the wire can be improved by rotating while applying the axial tension to the rod.

Claim 12 is any one of Claims 8-11 WHEREIN: The application means which apply | coats a lubrication agent to the wire of the said winding or winding is provided, It is characterized by the above-mentioned.

Thereby, the frictional resistance of the wires which generate | occur | produce when winding up by giving an entry angle to a wire can be made small, and the winding with more precision can be performed.

Effect of the Invention

As described above, according to the wire winding method and the wire winding machine of the present invention, a wire structure can be automatically wound on a rod with a simple configuration to form a wire row, and the winding density can be reliably eliminated by reliably removing the gap between the wire rows. I can make it constant. Thereby, not only the application failure of the bar strip etc. resulting from the gap at the time of rod application can be eliminated, but also the waste of wires due to useless winding work or poor winding can be eliminated.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of the wire winding method and wire winding machine which concerns on this invention according to an accompanying drawing is described in detail.

FIG. 1: is a top view conceptual view of the whole structure which looked at the wire winding machine 10 of this invention from upper direction, and FIG. 2 is a cross-sectional conceptual view in the 2-2 line of FIG.

As shown in these figures, both ends of the rod 14 serving as the core of the wire rod 12 are chucked by a pair of chuck devices 18 and 20 provided on the device table 16. And the rotating shaft 18A of one chuck apparatus 18 of a pair of chuck apparatus 18,20 is rotatably supported by the bearing 22, and the rotating shaft 20A of the other chuck apparatus 20 is It is supported by the bearing 24 and protrudes from the bearing 24 and is connected to the rotating shaft 28A of the AC servo motor 28 via the coupling 26 (joint member). Accordingly, when the AC servo motor 28 is driven, the rod 14 rotates about the shaft center 30 (see FIG. 4). As the rotation speed of the rod 14, the range of 30-300 rpm is preferable. As a material of the rod 14 which forms the wire rod 12 used for a rod application apparatus, stainless rods, such as SUS304, are preferable, but ceramics and resin can also be used. The rod diameter is preferably in the range of 3 mm to 20 mm, and the rod length is preferably in the range of 1 m to 5 m. Moreover, as for the material of the wire 32 wound by the rod 14, stainless steel is preferable, and the thing of 15 micrometers-500 micrometers of wire diameters is used preferably.

Tension means 34 which apply tension tension in the axial direction of the rod 14 are disposed in the bearing 22 disposed on the opposite side of the AC servo motor 28 among the pair of bearings 22, 24 supporting the rod 14. It is installed. The adjustment of the rod tension by the tension means 34 can be adjusted by the control by the motor or by the friction by the tightening. For example, the tension means 34 can be comprised as a structure of control by a motor like FIG. That is, the tension means 34 is installed so as to be slidable via a linear bearing 38 on the rail table 36 and a rail 36 placed in parallel with the rod 14 on the device table 16. The nut member 40 which supports the 22, and the rotating screw 44 which are screwed to the nut member 40, and are rotated by the forward-reverse rotational motor 42 are comprised. In addition, the tension means 34 is not limited to the above-mentioned thing, As long as it is a means which can apply tension tension with high precision in the axial direction of the rod 14, other means may be sufficient as it.

As shown in FIGS. 1 and 3, a ball screw 46 is arranged parallel to the rod 14 on the device table 16. One side of the ball screw 46 is supported by the bearing 48, the other is supported by the bearing 50, protrudes from the bearing 50, and is capable of forward and reverse rotation through the coupling 52 ( 54 is connected to the rotation shaft 54A. In addition, the nut member 57 is screwed to the ball screw 46, and the moving table 56 is fixed on the nut member 57. Both ends of the moving table 56 attach a linear bearing 59 (see FIG. 2) to a pair of rails 58 and 58 laid on the device table 16 in parallel with the rod 14 and the ball screw 46. Supported through. Thereby, by driving the AC servo motor 54, the ball screw 46 rotates, and the movement table 56 moves along the rod 14 in the winding progress direction of the wire 32 in parallel. The reverse rotation of the AC servomotor 54 is used to return the movement of the movement table 56 from one end of the ball screw 46 to the other end to its original position.

On the movement table 56, a rotation table 60 rotatable with respect to the movement table 56 is provided. On the rotation table 60, mainly, the delivery reel 62 of the wire 32 and the delivery position correction means 64 are provided. Is installed. On the other hand, the CCD camera 86 as the continuous imaging means described later is supported by the moving table 56.

As shown in FIG. 2, the movement table 56 and the rotation table 60 are connected by the rotation shaft 68, the upper end of the rotation shaft 68 is fixed to the rotation table 60, and the lower end is the movement table. It is supported by a bearing 70 embedded in 56. The rotation shaft 68, which is the rotation center of the rotation table 60, is arranged to be rotatable using the winding position (point) 74 at which the wire 32 is wound on the rod 14 as the rotation center 72. In addition, the rotation shaft 68 is connected to a rotation drive source (not shown), and the rotation table 60 can be rotated with respect to the movement table 56 at any angle by driving the rotation drive source. Thereby, the entry angle (winding angle) of the wire 32 is set to a predetermined angle at the start of the wire winding. In this case, a clutch may be formed between the rotation shaft 68 and the rotation drive source so that the rotation shaft 68 can form a state (state of clutch ON) with respect to the rotation drive source. Accordingly, while the wire winding is in a state where the rotating shaft 68 is free, the rotary table 60 automatically rotates according to the size of the actual entry angle with respect to the set entry angle, thereby causing the rotation table 60 to be displaced from the wire position. You may comprise so that it may follow.

Moreover, the wire tension means 76 which tensions the wire 32 is provided in 62 A of rotation shafts of the delivery reel 62. As shown in FIG. As the wire tensioning means 76, for example, a torque motor 78 can be suitably used so as not to rotate when the rotational torque of the rotation shaft 62A does not exceed a predetermined value as shown in FIG. The wire 32 may be tensioned by contacting the brake member with the rotation shaft 62A of the delivery reel 62 as another wire tensioning means 76. Although the wire tension varies depending on the wire diameter, it is better to wind the wire 32 as strongly as possible to the rod 14, and it is preferable to tension the wire 32 to the vicinity of the wire tensile strength, which is the upper limit of the range in which the wire 32 is not broken. . For example, the wire tension when the wire diameter is 75 µm is preferably in the range of 300 to 450 grf (3.0 N to 4.5 N), and the wire tension when the wire diameter is 85 µm is preferably about 700 grf (7.0 N). Do.

As the delivery position correcting means 64, as shown in FIGS. 1 and 2, a pulley for correcting the variation in the wire feed position from the delivery reel 62 by engaging the wire 32 sent out from the delivery reel 62. A through-pipe member (not shown) which corrects the fluctuation of the wire transfer position from the delivery reel 62 can be suitably used through the 80 and the wire 32. Accordingly, even if the release position of the wire 32 released from the delivery reel 62 is changed in the axial direction of the delivery reel 62, it is possible to prevent the wire 32 from affecting the entry angle of entering the rod 14. have. That is, the entry angle into the rod 14 of the wire 32 is determined by the delivery position correction means 64 and the wire wound position 74.

And the wire 32 sent out from the delivery reel 62 is wound by the rod 14 which rotates after correction | amendment so that a delivery position may become constant by the delivery position correction means 64. As shown in FIG. As a result, a wire row 82 (see FIG. 4) in which the wire 32 is wound is formed on the surface of the rod 14. In this case, in order to form the wire row 82 in which the wire 32 is wound without a gap, as shown in FIG. 4, the entry direction of the wire 32 entering the rod 14 is the axis of the rod 14. Inclined toward the wire row 82 already wound with respect to the vertical direction 84 perpendicular to the 30 to act on the wire 32 in the rod axial direction F for pressing the end of the wire row 82; In addition, it is important to set the precision of the entry angle of the wire 32 within the preset entry angle (alpha) +/- 1 degree preset. More preferably, it is within ± 0.8 °, particularly preferably within ± 0.05 °.

There are various factors such as fluctuations in wire diameters, fluctuations in rod diameter in the rod length direction, distribution of surface roughness on the rod surface, and the like, and all of these factors are measured and based on the measured values. The use of complex calculations to control the feedback complicates the winding method or apparatus.

Thus, in the present invention, the wire 32 enters the rod 14 by monitoring the variation of the entry angle of the wire 32 with the CCD camera 86 as a deviation of the wire position in the rod parallel direction with respect to the imaging reference point P. When the angle (winding angle) was set, the next step was to correct the misalignment so that the winding density was constant and the winding could be performed with a constant accuracy without performing the wire diameter fluctuation or the like of complicated calculation.

That is, as shown in the conceptual diagram of FIG. 5, when the actual entry angle of the wire 32 is β with respect to the set entry angle α of the wire 32, the CCD camera 86 performs the entry angle β ( The deviation amount of how many divisions the wire position at the time of the actual entry angle is shifted with respect to the imaging reference point P (refer FIG. 5) which is the wire position at the set entrance angle (alpha) is detected. In this case, what is necessary is just to provide the light source 90 which illuminates the wire 32 in the vicinity of the CCD camera 86. FIG. When the wire 32 is illuminated by the light source 90, the wire 32 has a curvature and diffusely reflects, so that the shadow can be made clear and a clear image of the wire 32 can be obtained. Thereby, the shift | offset | difference amount of a wire position can be detected correctly.

The shift of the scale can be grasped | ascertained as the shift | offset of the pixel of CCD camera 86, and a detection result is transmitted to the control means 88. As shown in FIG.

The control means 88 has a proportional relationship between the amount of misalignment of the wire position detected by the CCD camera 86 and the correction rotation speed of the AC servo motor 54 which rotates the ball screw 46 for moving the movement table 56. Is input in advance, and a correction signal is fed back to the AC servo motor 54. Thereby, the deviation of the wire position with respect to the imaging reference point P is eliminated. In this case, if the wire position is slightly shifted from the imaging reference point P, the correction signal may be sent. However, if the slight shift occurs, there is no problem with the winding accuracy. Therefore, it is preferable to form a predetermined allowable range for the shift. As a predetermined allowable range of the deviation, it is necessary to maintain within the setting entrance angle α ± 1 °, more preferably within ± 0.8 °, particularly preferably within ± 0.05 when viewed from the setting entrance angle α.

As shown in FIG. 6, the deviation amount of the wire 32 detected by the CCD camera 86 is determined by the imaging reference point P at the set entry angle α and the end 82A of the wire row 82. It is displayed on the display means 92 as a positional relationship.

Moreover, it is preferable to install a lubricant cylinder (not shown) in the middle of the wire delivery route on the rotary table 60, and to run while the wire 32 sent out from the delivery reel 62 is submerged in the lubricant stored in the lubricant container. In winding the wire 32 to the rod 14, the wire may be wound even in a dry state, but the coefficient of friction at the wound position (point) 74 may be due to a slight wound or a difference in surface roughness of the wire surface. In some cases, the wire 32 may ride on the wire row 82 in some cases. Therefore, by winding the wire 32 in the lubricant and applying the lubricant to the wire 32, the winding can be performed smoothly. In addition, even when the wire 32 is wound on the rod 14, even a small foreign material is a factor that forms a gap between the rows of the wire rows 82, but adheres to the wire by immersing the wire 32 in a lubricant. Micro foreign matter such as dust can be removed. It is also preferable to drop the lubricant in a position where the wire 32 is wound on the rod 14 without applying the lubricant to the wire, in order to improve the winding accuracy. As a lubricant, what mixed lubricating oils, such as glycerol, with lubricating oils, such as glycerin, and volatile solvents, such as alcohol, can be used suitably.

The method of forming the wire rod 12 by the wire winding machine 10 comprised as mentioned above is demonstrated.

The wire winding method of this invention mainly consists of four processes, an entrance angle setting process, a reference point determination process, a deviation determination process, and a speed control process, and each process is demonstrated in detail below.

First, the inspection process which examines the deviation of the wire 32 wire diameter used for winding as a pre-automatic winding preparation is performed. And the deviation of wire diameter is used within 0.5 micrometer of nominal, More preferably, within 0.2 micrometer of nominal. Here, an inspection process is not limited to what is performed in the field which wound a wire, For example, a wire manufacturing company inspects and delivers the wire which satisfy | fills the said deviation.

In addition, as a preliminary preparation, both ends of the rod 14 are chucked by the pair of chuck devices 18 and 20 and then tensioned in the axial direction of the rod 14 by the tension means 34. Accordingly, as described above, since the elongated rod 14 is easy to bend, rotational vibration is likely to occur when the rod 14 is rotated, but rotational vibration is generated by rotating the tension in the axial direction of the rod 14 in a state of being held. Can be suppressed. Then, the tip of the wire 32 wound on the rod 14 is taken out from the delivery reel 62, and wound by hand on the rod 14 approximately 4 to 5 times, and the wire tip is fixed to the rod 14. . As a result, the automatic winding preliminary preparation is completed, and the entrance angle setting process is performed next.

In the entry angle setting process, the wire row already wound about the direction perpendicular to the axis center of the rod 14 from the delivery position of the wire 32 sent out from the delivery reel 62 to the rod 14 is entered. While inclining toward (82), the entry angle of the wire 32 formed by the vertical direction and the entry direction is set to a constant value (set entry angle α) within a range of more than 1 ° and less than 15 °. . That is, the winding entry angle of the wire 32 entering the rod 14 is set by temporarily driving the AC servo motor 54 for the ball screw and by slightly moving the movement table 56 to rotate the rotary table 60. The entry angle α is set. The range of 1 degrees-15 degrees is preferable, as for the setting entrance angle (alpha), the range of 3 degrees-10 degrees is more preferable, The range of 5 degrees-8 degrees is especially preferable. This is because when the set entry angle α is 1 ° or less, the axial component force F (see FIG. 4) acting on the wire 32 is too small so that the wire 32 ends the end 82A of the wire row 82. The pressing force is weak, and a gap tends to be formed between the rows of the wire rows 82. On the other hand, when the set entry angle (alpha) is 15 degrees or more, the axial component force F which acts on the wire 32 is too large, and the wire 32 which entered the rod 14 will burn up in the wire row 82, Because it is easy to be wound twice.

In the next reference point determination step, the CCD winding 86 captures the vicinity of the rod winding position 74 of the wire 32 set at the set entry angle α, and the imaging reference point P is placed on the wire 32 on the image. Set the CCD camera 86 to be placed.

In the next misalignment determination process, the CCD 32 captures the image reference point (when the wire 32 is automatically wound on the rod 14 with the rotational circumferential speed of the rod 14 and the movement speed of the movement table 56 at the same speed). The deviation of the wire 32 relative to P) is monitored by the CCD camera 86, and the result of the monitoring is transmitted to the control means 88. And the control means 88 determines whether the wire 32 has shifted more than predetermined tolerance in the rod parallel direction with respect to the imaging reference point P. As shown in FIG.

That is, in the wire 32 which enters the rod 14 by automatically winding by setting the set entry angle α, the component force F in the rod axis direction, which is an appropriate pressing force to the end 82A of the wire row 82, is applied. Works. Thereby, the wire 32 is wound by imitating the winding state of the terminal 82A of the wire row 82. As a result, the wire row 82 in which the wire 32 is wound without a gap can be formed on the rod surface.

In this automatic winding process, when the rotational circumferential speed of the rod 14 and the movement speed of the movement table 56 are the same, the wire diameter variation of the wire 32, the rod diameter variation in the rod length direction, and the surface roughness distribution of the rod surface are distributed. When a change factor of the entry angle of the back and the like occurs, the winding speed of the wire 32 (the speed at which the wire row is long) changes, so that the wire position with respect to the imaging reference point P is shifted in the rod parallel direction. This discrepancy is manifested in the form of all the factors that change the entry angle. And when this shift | offset | difference is large, it becomes a factor in which a clearance gap is formed between the columns of the wire row 82, and a factor of the double winding which the wire 32 rises in the wire row 82. Therefore, it is important to make the deviation very small so that the entry angle of the wire 32 is always kept constant in the vicinity of the set entry angle α.

In the following speed control process, the control means 88 maintains the rotational circumferential speed of the rod 14 and the movement speed of the movement table 56 at the developing speed, and the deviation exceeds the predetermined allowable range when the deviation is within a predetermined allowable range. When there is, the speed of at least one of the rotational circumferential speed of the rod 14 and the moving speed of the moving table 56 is controlled so that the deviation falls within a predetermined allowable range. That is, the control means 88 controls the rotation speed of the AC servomotor 54 for the ball screw based on the detection result transmitted from the CCD camera 86, and moves the movement table (to allow the deviation of the wire to enter the predetermined allowable range). 56) to control the moving speed.

Here, keeping at the developing speed does not mean making the rotational circumferential speed of the rod 14 and the moving speed of the movement table 56 at the same speed, and if the deviation is within a predetermined allowable range, the rotational circumference of the rod 14 The speed and the moving speed of the moving table 56 may be different. For example, when the wire position of the wire 32 fluctuates, if the wire position does not deviate from the imaging reference point P, other factors such as the surface roughness distribution of the rod 14 are considered to be offsetting the fluctuation of the wire diameter. Maintains the rotational circumferential speed of the rod 14 and the moving speed of the moving table 56 as they are. And when there is a shift | deviation exceeding a predetermined allowable range, the speed | rate of at least one of the rod rotation main speed and the movement speed of the movement table 56 is controlled so that the said shift may enter into a predetermined allowable range.

When this is demonstrated by (a)-(c) displayed on the display means 92 of FIG. 6, when the terminal 82A of the wire row 82 and the imaging reference point P match like FIG. 6 (a), In other words, since the entry angle of the wire 32 coincides with the set entry angle α, the control means 88 controls to maintain the rotational speed of the AC servomotor 54 in the present state.

In addition, when the terminal 82A of the wire row 82, ie, the winding position 74 of the wire 32, is shifted | deviated from the imaging reference point P like FIG. 6 (b), for example, Since the wire diameter of the wire 32 fluctuates and the winding speed of the wire becomes slow, it means that the movement speed of the movement table 56 is too fast with respect to the rotational circumferential speed of the rod 14. Therefore, the control means 88 feeds back the correction signal which slows down the rotation speed of the AC servo motor 54 to the AC servo motor 54. Thereby, since a shift | offset | difference can be corrected and it may fall in a predetermined allowable range, the winding density can be made constant.

In addition, when the terminal 82A of the wire row 82, ie, the winding position 74 of the wire 32, is shifted in the state which overlapped with the imaging reference point P like FIG.6 (c), for example, a wire ( Since the wire diameter of 32 is changed in the thickening direction, the winding speed of the wire is increased, which means that the moving speed of the moving table 56 is too slow with respect to the rotational main speed of the rod 14. Therefore, the control means 88 feeds back the correction signal which accelerates the rotation speed of the AC servomotor 54 to the AC servomotor 54. Thereby, since a shift | offset | difference can be corrected and it may fall in a predetermined allowable range, the winding density can be made constant.

As described above, in the present invention, the deviation shown in the deviation determination step is represented by a form including all factors in which the entry angle fluctuates. When the entrance angle (winding angle) is set in advance, the wire is then simply corrected. It is possible to perform a good winding with a constant winding density without performing fluctuations in wire diameters or complicated calculations.

In addition, in this embodiment, although the shift | offset | difference of wire position was eliminated by changing the moving speed of the movement table 56, you may change the rotational circumferential speed of the rod 14. As shown in FIG.

Next, 100 wire rods were produced using the wire winding machine of FIG. 1, and it was tested how many passes could be produced as wire rods of the rod application apparatus without gaps between the rows of wire rows.

(Example)

The winding conditions in the Example of this invention are as follows.

① rod and wire

 Wire: stainless steel of 75 μm

 Rod: SUS304 stainless round rod 10 mm in diameter and 2 m long

② Winding machine

 Rod rotation speed: 50 rpm

 Wire tension: 100grf

 Wire entry angle: 5 °

 Accuracy of wire entry angle: 0.05 °

 Apply lubricant to wire: Apply with lubricant canister installed on rotary table

 Detection means: CCD camera

As a result of producing 100 wire rods under the above conditions, all 100 wires had no gaps between the rows of wire rows and were passed as wire rods of the rod coating device.

In addition, as a comparative test, 100 wire rods were produced by the wire winding method using the transfer mechanism of the lathe shown in the prior art. As for 60 out of 100 wires, gaps were observed between the rows of wire rows, which failed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top conceptual view of the whole structure which looked at the wire winding machine of this invention from upper direction.

FIG. 2 is a cross-sectional conceptual view taken along line 2-2 of FIG. 1.

3 is a side view of the tension roller means.

It is explanatory drawing explaining the entry angle of a wire and its effect | action.

5 is a conceptual diagram of a method for detecting a change in the entry angle of a wire with a CCD camera.

6 is an explanatory diagram illustrating a relationship between display and control of a movement table on display means.

It is a perspective view explaining the conventional wire winding method.

<Explanation of symbols for the main parts of the drawings>

10: wire winding machine 12: wire rod

14: Load 16: Device Table

18,20: Chuck device 22,24: Bearing

26, 52: Coupling 28, 54: AC servo motor

30: center of rod 32: wire

34: wire tension means 46: ball screw

48,50: bearing 52: coupling

54: AC Servo Motor 56: Moving Table

57: nut member 58: rail

60: rotary table 62: discharge reel

64: delivery position correction means 66: detection means

68: rotating shaft 70: bearing

72: rotation center of the rotary table 74: winding position

76: wire tension means 78: torque motor

80: pulley 82: wire column

84: vertical direction perpendicular to the rod 86: CCD camera

88: control means 90: light source

92: display means

Claims (12)

While rotating a rod having a round rod shape around the shaft center, the dispensing means for dispensing the wire is moved parallel to the rod on a moving table to move the dispensing position of the wire, and one wire is moved from one end of the rod to the other end. As a wire winding method of winding a wire to form a row of wire wound wire on the rod surface: The entrance direction of the wire entering the rod from the dispensing position is inclined toward the wire row side already wound with respect to the direction perpendicular to the axis of the rod, and the entry of the wire formed by the vertical direction and the entry direction An entrance angle setting step of setting the angle to a constant value within a range of more than 1 ° and less than 15 °; A reference point determining step of picking up the vicinity of the rod winding position of the wire set at the entry angle with a continuous image pickup means, and setting the continuous image pickup means such that the image pickup reference point is placed on the wire on an image; The wire is continuously wound on the rod with the rotational main speed of the rod and the movement speed of the moving table at the same speed, and the wire is continuously imaged by the continuous imaging means, and the wire is in a predetermined allowable range in the rod parallel direction with respect to the imaging reference point. A misalignment determination step of determining whether or not the misalignment is exceeded; And When the deviation is within a predetermined allowable range, the rotational circumferential speed of the rod and the moving speed of the moving table are maintained at the developing speed. When the deviation is exceeded by a predetermined allowable range, the rotational circumference of the rod so as to enter the deviation within the predetermined allowable range. And a speed control step of controlling at least one of the speed and the moving speed of the moving table. The method of claim 1, The predetermined tolerance range of the said shift | offset | difference is a wire winding method as described in the above-mentioned setting entrance angle within +/- 1 degree. The method according to claim 1 or 2, And said imaging reference point is within 28 mm from the wire winding position to said rod. The method according to any one of claims 1 to 3, On the moving table, a rotating table is rotated around the rotational position at which the wire is wound on the rod, and the feeding means is supported on the rotating table, and the continuous imaging means is supported on the moving table. The wire winding method, characterized in that for rotating in accordance with the magnitude of the change in the actual entry angle with respect to the set entry angle. The method according to any one of claims 1 to 4, A wire winding method, wherein the wire diameter has a nominal 0.5 µm or less. The method according to any one of claims 1 to 5, And a test step of inspecting whether or not the deviation of the wire wire diameter is within a nominal of 0.5 µm before winding the wire onto the rod. The method according to any one of claims 1 to 6, A wire winding method, wherein a lubricant is applied to the wire at the time of winding to the rod or at the time of winding. The wire wound around the rod by winding a rod having a round bar shape, and winding one wire from one end side of the rod to the other end side while moving the wire feeding position in parallel with the rod. As a wire winding machine to form heat: Rotating means for rotating the rod about an axis; A moving table moving along the axial direction of the rod; A rotating table supported rotatably on the moving table, having a sending means for sending out the wire and having a rotation center formed at a winding position at which the wire is wound on the rod; Continuous imaging means supported on the moving table and set so as to image the wire sent out from the delivery means and entering the rod, and set an imaging reference point on the wire on the image; And Based on the imaging result of the continuous imaging means, it is determined whether or not the wire is misaligned with the rod reference direction in the rod parallel direction beyond a predetermined allowable range. If the deviation is within the predetermined allowable range, the rotational circumferential speed of the rod And maintain the moving speed of the moving table at the developing speed, and control the speed of at least one of the rotational main speed of the rod and the moving speed of the moving table so that the deviation falls within the predetermined allowable range when the moving speed exceeds the predetermined allowable range. Wire winding machine comprising a control means for. The method of claim 8, And a feeding position correcting means for constantly correcting the feeding position sent from the sending means to the rod on the rotary table. The method according to claim 8 or 9, The wire winding device which provided the wire tension means which tensions this wire in the wire which enters the said rod. The method according to any one of claims 8 to 10, And a rod tensioning means for applying an axial tension tension to the rod. The method according to any one of claims 8 to 11, The wire winding machine provided with the application means which apply | coats a lubrication agent to the wire of the said winding or the winding time.

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