JP2003200335A - Wire type fine hole polishing method, polishing machine and wire therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire type fine hole polishing method and polishing machine enabling a continuous automatic operation and a tapered wire to be used for the polishing machine. <P>SOLUTION: This tapered wire 1 polishes a fine hole of a workpiece by supplying grinding slurry while inserting a plurality of workpiece having the fine holes into the tapered wire 1 successively and linearly having a small diameter part 1Ai, a tapered part 1Bi and a large diameter part 1Ci, rotating the workpieces one by one and moving the workpieces from the small diameter part 1Ai side to the large diameter part 1Ci side. The tapered wire 1 is constituted as a continuous tapered wire 1 in which a rear end of the large diameter part 1Ci is successively linked and connected to a distal end of the small diameter part 1Ai of the next tapered wire 1 among the desired number of adjacent tapered wires 1. A supply means of the continuous tapered wire 1 for winding, storing and supplying the continuous tapered wire 1 is provided. When one polishing process is finished, the continuous tapered wire 1 is cut at the distal end of the small diameter part 1Ai of a new tapered wire 1 for the next polishing process, the workpiece polished in the previous process is extracted and recovered from the previous tapered wire 1, and the cut tapered wire 1 in the previous process is recovered. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical part having a very thin hole such as a hole for a drawing die or a hole for a fiber of a ferrule used in an optical connector for connecting an optical fiber. The present invention relates to a method and a polishing machine for polishing a large number of each of the above holes of a capillary) continuously, and a tool wire used for the polishing.

[0002]

2. Description of the Related Art As the ferrule, a manual or automatic wire-type micro-hole for polishing an optical fiber insertion hole φ0.125 mm (within a tolerance of ± 0.5 μm) made of ceramics (for example, zirconia ZrO2) with a metal taper wire. Polishing machines are known.

This one has a fixed length (1.2 to 9 m)
Insert a desired number of workpieces (such as the above-mentioned cylindrical ferrule) into the taper wire that has been cut and cut into pieces (some of them are solidified into blocks), stretch the taper wire, and polish the slurry. While coating, while rotating the workpiece, the taper wire is moved from the smaller diameter portion toward the larger diameter portion to finish the diameter of the hole to a predetermined size.

When the polishing of the number of workpieces inserted into the set taper wire is completed, the unpolished workpiece is replaced with the inserted taper wire. In this configuration, a predetermined number of unpolished workpieces are previously stored and stored so that a predetermined number of taper wires can be exchanged, and the old and new taper wire exchange means are provided.

Also, for example, Japanese Patent Laid-Open No. 10-328985.
In the publication, a main shaft for rotating and vibrating a plurality of ferrules in the circumferential direction and in the axial direction, a wire feeding portion for feeding a taper wire into a fiber insertion hole of a ferrule, and a wire passing portion for passing a taper wire through the fiber insertion hole. , A wire winding unit that winds the taper wire inserted through the fiber insertion hole, and a wire passage detecting unit that is interposed between the wire feeding unit and the wire passing unit and detects the passage condition of the taper wire into the fiber insertion hole, Described is a micro-hole polishing apparatus equipped with a wire feed control unit that controls the wire feed unit to reverse feed the taper wire while stopping the feeding of the taper wire to the fiber insertion hole when a defect is detected as the taper wire passes. ing.

[0006]

Even if it is automated in the above conventional machine, in order to achieve the purpose, a step of inserting and setting a predetermined number of unpolished workpieces in advance on each one taper wire is a separate step. In addition, the number of taper wires that can be exchanged for one polishing machine is naturally limited, and the number of workpieces must be removed from the polished taper wire and used. A separate treatment was also required for the treatment of the taper wire.

Further, although the one described in the above-mentioned publication is said to measure the automation of work and the improvement of workability, the fiber insertion hole of the ferrule in the main shaft in which a plurality of ferrules are loaded in series is described. On the other hand, the method of inserting the taper wire over a considerable length has a problem in relation to the taper wire, and it is difficult to maintain polishing accuracy and uniform practical application is difficult.

The present invention provides a wire type fine hole polishing method and a polishing machine which solves the problem of automation in the prior art and enables continuous automatic operation for a long time, and a taper wire used in the polishing machine. With the goal.

[0009]

The above-mentioned objects of the present invention are as follows.
(1) A plurality of cylindrical workpieces each having a minute center hole are inserted into a taper wire having a small-diameter portion, a tapered portion, and a large-diameter portion, each of which has a predetermined length and is formed in a straight line, and one or a plurality of the workpieces are inserted. In the method of polishing the center hole of the workpiece by supplying a grinding slurry between the two while relatively rotating the workpiece and relatively moving from the small diameter portion side to the large diameter portion side, the taper wire comprises: Between the desired plural taper wires adjacent to each other, the rear end of the large-diameter portion is composed of a continuous taper wire which is continuously connected to the tip of the small-diameter portion of the next taper wire, and the taper wire is connected to one block from the winding storage part. Each taper wire is provided so that it can be fed vertically to the polishing part with the small diameter side as the tip, and (a) the center hole of a required number of workpieces that are uniformly supplied from the parts feeder is Aligned with the straight path unobstructed, which is prepared for Tepawaiya sent through processing unit,
(B) The taper wire is fed by a feeding device so that the center hole of the work is aligned and the center hole of the work piece is inserted from the tip small diameter side of the work piece, and (c) a predetermined number of the work pieces are inserted. The taper wire is sent out, and the tip end small diameter part is clamped and fixed to the winding means to set the processed part taper wire in a predetermined tension state, and (d) the workpiece inserted in the small diameter part of the taper wire has a large diameter Part of the large diameter part while rotating sequentially from the part side to the large diameter part side, so that the taper part is ground under the polishing slurry interposition, and (e) the workpiece is thickened every time a predetermined polishing processing state is reached. (F) When the polishing work of the workpiece inserted in the small-diameter portion is finished, it is sent out by the cutting device positioned with respect to the taper wire of one block of the processing portion. Cutting at the tip small diameter part of the taper wire to be used, (g) Extracting the polished finished workpiece stocked in the large diameter part and collecting it in the product collection means, and collecting and discarding the used taper wire left over the processing part This is achieved by using a wire type fine hole polishing method.

Further, the above-mentioned object of the present invention is as follows: (2) A cylindrical work having a fine center hole in a taper wire having a small-diameter portion, a taper portion and a large-diameter portion, each of which has a predetermined length and is linear in sequence. While inserting a plurality of workpieces and rotating one or a plurality of workpieces and relatively moving the workpieces from the small-diameter portion side to the large-diameter portion side, a grinding slurry is supplied between them to interpose the workpieces. In the device for polishing the center hole of the taper wire, the taper wire is composed of a continuous taper wire in which the rear end of the large diameter portion is continuously connected to the tip of the small diameter portion of the next taper wire between the adjacent taper wires. A continuous taper wire supplying means for storing and supplying the required quantity of the continuous taper wire, and a continuous taper wire at the tip of the small diameter portion of the new taper wire in the next polishing step depending on the end of the polishing process in the next step. A cutting means, a means for extracting and recovering the work piece polished in the previous step from the taper wire in the previous step, a means for collecting the cut taper wire in the previous step and the work piece are arranged one by one. Part feeder to be supplied as a set, a means for sequentially inserting and setting a predetermined number of workpieces supplied by the part feeder from the tip of the small diameter portion of the cut taper wire in the next step, and inserting into the thin diameter portion of the taper wire. By rotating the set workpiece from the large diameter side in order to the large diameter side, the workpiece is ground under the polishing slurry interposition in the taper part, and the workpiece is machined every time when a predetermined polishing state is reached. And a means for inserting and stocking into the large diameter portion, and a wire type micro hole polishing machine having.

Further, the above-mentioned object of the present invention is described in (3) above, in which the continuous taper wire is supplied from the bottom to the top by the supply means for the continuous taper wire to the polishing portion. This is achieved by using the wire type fine hole polishing machine of.

Further, the above-mentioned object of the present invention is described in (4) above, in which the continuous taper wire is supplied from the top to the bottom by the supply means of the continuous taper wire to the polishing portion. This is achieved by using the wire type fine hole polishing machine of.

Further, the above-mentioned object of the present invention is: (5) The above-mentioned (2) and (3), in which the continuous taper wire is supplied to the polishing portion by the continuous taper wire supply means with the smaller diameter portion side as the first side. Alternatively, it can be achieved by using the wire type fine hole polishing machine described in (4).

Further, the above-mentioned object of the present invention is: (6) The means for cutting the continuous taper wire has a detection means for detecting a small diameter portion of the continuous taper wire, and the relative movement between the continuous taper wire and the cutting means is achieved. The above-mentioned (2), (3), (4), which can detect the small-diameter portion and stop the relative movement.
Alternatively, it can be achieved by using the wire type fine hole polishing machine described in (5).

Further, the above-mentioned object of the present invention is: (7) The above-mentioned (2), (3) in which the insertion of the workpiece center hole into the tip of the small diameter portion of the continuous taper wire is performed for each workpiece. ),
This can be achieved by using the wire type fine hole polishing machine described in (4), (5) or (6).

Further, the above-mentioned object of the present invention is as follows. (8) A cylindrical work having a fine center hole in a taper wire having a small-diameter portion, a taper portion and a large-diameter portion, each of which has a predetermined length and is linear in sequence. While inserting one or more workpieces and rotating one or more workpieces and relatively moving from the small diameter portion side to the large diameter portion side, the grinding slurry is supplied between them to interpose the workpieces. The taper wire used in the device for polishing the center hole of the taper wire is such that, in the desired plurality of the taper wires, the rear end of the large diameter part is sequentially connected to the tip of the small diameter part of the next taper wire. Used in a wire-type micro-hole grinder in which the continuous taper wire is made into a continuous taper wire, and the index of the cutting position is previously attached to the tip position of the small diameter part connected to the rear end of the large diameter part of the continuous taper wire. Continuous tape This is achieved by using a wire.

FIGS. 1 and 2 are explanatory views of a continuous taper wire used in the wire type fine hole polishing method and the small hole polishing machine of the present invention. FIG. 1 is an enlarged view of a portion of the taper wire which is approximately one block extra, and FIG. This shows a part of several blocks.

In FIGS. 1 and 2, the 1 taper wire block portion of the continuous taper wire 1 is, for example, in the case of ceramic ferrule polishing, from the tip side to a small diameter portion (thin straight portion) 1Ai, a tapered portion 1Bi, and a large diameter portion. (Thick straight portion) 1Ci portion is sequentially and linearly provided for each predetermined length, and the tip of the small diameter portion 1Ai is located at the rear end of the large diameter portion 1Ci-1 of the front taper wire block and the thick portion. The rear end of the diameter portion 1Ci is connected to the tip of the small diameter portion 1Ai + 1 of the next taper wire block so that the taper wire blocks are connected to each other.
For each polishing step, one block portion is supplied to the polishing area with the small diameter side as the tip, and in the subsequent polishing step that is used, the used portion is cut and discarded for each block portion,
The next block of taper wire is used.

FIG. 3 shows a continuous taper wire 1 as described above.
1 shows an embodiment of an electrolysis apparatus for continuously and automatically manufacturing by means of sequence control or the like. A supply unit 2 having a reel for storing a material wire 1S and a reel for winding the manufactured continuous taper wire 1 are shown. An electrolytic processing part 4 for continuously forming a tapered wire having a small diameter part 1Ai, a tapered part 1Bi, and a large diameter part 1Ci from a material wire 1S having a predetermined wire diameter between the recovery part 3 and a recovery part 3 having the diameter. There is provided a post-processing section 5 for performing post-processing such as cleaning and drying before winding the electrolytically machined continuous taper wire 1 in the collecting section 3 on a reel.

When the workpiece to be ground is a ceramic ferrule as described above, the fine center hole is, for example, φ.
While the material wire 1S of the continuous taper wire 1 is finished to 0.125 mm, for example, φ0.124
A piano wire of mm is used, and this wire diameter is used as the outer diameter dimension of the large diameter portion 1Ci of the manufactured continuous taper wire 1.

This material wire 1S is fed from the tip into an electrolytic bath 4A containing an electrolytic processing liquid such as sodium nitrate, and is immersed in a liquid in the bath 4A to form a cylindrical electrode pipe 4B coaxially. While being inserted through and moved in, the raw material wire 1S connected to the positive electrode of the electrolytic processing power source 4C is electrolyzed, and the anode is melted to reduce the diameter. At this time, the outer diameter of the material wire 1S can be freely processed for each part in the wire axis direction by controlling one or both of the control of the electrolytic current and the control of the moving speed of the material wire 1S.

The post-treatment section 5 for cleaning or the like is formed into a predetermined continuous taper wire 1 by the electrolytic processing section 4 and is continuously fed into the cleaning tank 5A in the continuous taper wire 1A.
Is washed off by the spraying means 5B of water or a cleaning water to which a cleaning agent is added, is generally sent by the felt roller 5C, and if necessary, the paraffin applying means 5D for rust prevention, the laser outer diameter measuring means 7, and further hot air drying. It is dried by the means 5E and wound up by the reel or the like of the recovery unit 3. In the present invention, the continuous taper wire 1 manufactured in this manner is convenient for use in a later polishing machine, that is, as described later, the continuous taper wire 1 has a predetermined number of workpieces. One block of taper wire is used for each polishing process, and in the polishing process of the next step, processing such as cutting and discarding at the small diameter part 1Ai + 1 of the next taper wire connected to the rear large diameter part 1C is required. Therefore, index giving means 6 such as a marker capable of detecting the cut portion is provided as necessary.

Although not shown in the figure, a control means for increasing / decreasing the output current of the electrolytic processing power source 4C and controlling ON / OFF, a supply portion 2 for the raw material wire 1S, and a winding / recovering portion 3 for the production continuous taper wire 1 are provided. Needless to say, control means for controlling the rotation control means (not shown) provided on both or one of the above and the control means for controlling the other is provided.

Material wire 1 by the electrolysis device in FIG.
The continuous taper wire 1 is manufactured from S as follows, as shown in the time-speed and time-current value characteristic diagram of FIG. The tip of the raw material wire 1S was set to a state in which the raw material wire 1S could be wound up in the collecting section 3, and while gradually decelerating from a predetermined speed, an electrolytic current of a predetermined value was turned on to cause the raw material wire 1S to run for 500 mm and be wound up. By the way, the running winding of the material wire 1S of 500 mm is carried out at a predetermined low speed, during which the electrolytic current is continuously supplied, and then,
The power is turned off, and the material wire 1S is wound and collected by the collecting unit 3 so as to travel 400 mm. This 400mm
After the running of the above, the above-mentioned electrolysis process is started, and thereafter, until the raw material wire 1S of the supply unit 2 is used up, →→
Continuous taper wire 1 by repeating →→ ...
Is manufactured.

That is, according to the above-mentioned manufacturing method, the taper portion 1B is formed by a process following the long unmachined large diameter portion 1C.
However, it is processed and formed so that it gradually becomes thinner from the thick portion, and then the small diameter portion 1A is processed and formed by the process,
In the next step, the cylindrical electrolytic electrode 4B facing the small diameter portion 1A in the above step becomes opposite to the raw material wire 1S of the taper portion 1B of the taper wire of the next block until the raw material wire 1S is faced. Is moved by winding up.

When the continuous taper wire 1 is manufactured in this manner and is wound up and collected in the collecting part 3, each taper wire is reduced in diameter when the taper wire is used in polishing.
This is convenient because it can be pulled out with the A side as the tip and used as it is for use.

FIG. 5 is a simplified explanatory diagram of the construction and operation of the first embodiment of the continuous automatic operation type wire type small hole polishing machine constructed by using the continuous taper wire 1 manufactured as described above. The second embodiment described later is an embodiment in which the continuous taper wire 1 is sent out from the top to the bottom, whereas the continuous taper wire 1 is sent out from the bottom to the top in reverse.

In the figure, 3 is a supply reel for winding and storing the continuous taper wire 1 manufactured by the above-mentioned manufacturing means, and a series of a small diameter portion 1Ai, a taper portion 1Bi and a large diameter portion 1
Thousands of one block of taper wire made of Ci are provided as one continuous taper wire 1 and the wire can be pulled out and supplied, but at a constant back tension at the time of polishing, especially during cutting and cutting of the continuous taper wire 1. A torque motor 8 and a controller for controlling the torque motor 8 are provided so that the continuous taper wire 1 can be supplied.

Numeral 10 is a means for inserting, stretching and renewing the continuous taper wire 1 which is clamped and fixed on the upper part of the continuous taper wire 1 provided above the supply means 9, wound, curled and discarded. Then, between the supply means 9 and the polishing portion, the small-diameter portion 1Ai, the tapered portion 1Bi, and the large-diameter portion 1Ci are fed vertically upward through the processing portion so that they are in a straight line. An unobstructed straight path is prepared for the continuous taper wire 1.

In the figure, reference numeral 11 indicates the insert and take-out means 1 for aligning the work pieces one by one or several pieces one by one.
A parts feeder such as a vibrating type having an advancing / retreating straight feeder section 11A that is supplied directly below 0, 12 is an upper hand for wire feeding, and a predetermined number of one or more workpieces that the parts feeder 11 supplies and a central hole in a straight path When aligned and arranged directly below the take-up means 10, as will be described later, the tip of the small diameter portion 1Ai of the taper wire 1 used for the next polishing process that has been elevated and sent from the lower portion is projected upward. Position the upper hand 12 that is being gripped at the position 12A.
It is inserted into the center hole by raising it to
The tip is clamped and fixed to the take-up means 10, and the hand 12
Open the grip of the small diameter part 1Ai and drop the inserted work along the taper wire 1 to the taper part 1Bi side,
2 grasps almost the same position of the small-diameter portion 1Ai, releases the pinching and fixing of the take-up means 10, and the upper hand 12 descends to the initial position and returns. Taper wire 1
Repeat from the small diameter portion 1Ai to the taper portion 1Bi until a predetermined number of workpieces are inserted and stocked.

13 is at the lowermost position of the work which is usually inserted through the upper thin portion 1Ai of the continuous taper wire 1.
Has a chuck 14 for opening and closing one or more workpieces,
A rotary motor for polishing which is rotated through a belt that is hung over the rotary motor 13 through a taper portion 1Bi of a continuous taper wire 1 which is supplied with a polishing slurry from a dispenser 15 while rotating a workpiece. Not along the vertical rail, etc. Position 13 at the top of the large diameter portion 1Ci
The predetermined polishing process is completed while the work is moved down to A. Then, the machined workpiece is treated with a large diameter portion 1Ci.
The rotary motor 13 returns to the gripping position of the next workpiece above the upper part, but by providing the workpiece sensor 16 below the chuck 14, the rotary motor 13 is gripped and ground from the workpiece at the lowermost portion. Be used for.

Reference numeral 17 denotes a wire cutter 17A, a wire fixing lower hand 17B, and a wire feeding lower hand 17
C is a means for cutting and stretching the continuous taper wire 1 which is integrated into the upper and lower parts, and further, by providing a detection sensor 17D for the small diameter portion 1Ai + 1 of the taper wire below the cutter 17A, the workpiece set on the taper wire. After the polishing process is completed, the cutting and stretching means 17
However, by descending along a guide rail or the like (not shown), the cutting position of the continuous taper wire 1 and the downward large diameter portion 1Ci of the processing portion tension taper wire, and the tip side small diameter portion 1Ai + 1 of the next taper wire are detected to detect the means. Stop the descent of 17 and position. Then, near the tip of the small diameter portion 1Ai + 1,
While cutting the continuous taper wire 1, the lower wire feeding hand 17C is caused to grasp the position immediately below the cutting portion prior to the cutting operation.

Further, during the cutting process of the continuous taper wire 1, since the ground work is inserted and stocked in the large diameter portion 1Ci below the work taper wire, the product box for collecting the work piece is recovered. 18 is sent out from the retracted position to the recovery position prior to the cutting operation, and collects the work piece falling out of the taper wire due to the cutting. At this time, the used taper wire 1 above the cutting position is taken by the uppermost take-up means 10 and is curled and discarded, as will be described later. On the other hand, the small-diameter portion 1Ai + 1 of the next taper wire 1 which is the tip by the cutting held by the wire feeding lower hand 17C of the cutting and stretching means 17 has the original position of the stretching means 17 (tapered portion 1Bi). Of the upper end of the
This is for projecting and gripping the wire feeding upper hand 12 through the gripping chuck portion 14 of the rotary motor 13. This is for shifting to the insertion operation from the parts feeder to the workpiece center hole, and the small diameter portion 1Ai + 1 that is grasped by raising the wire feeding lower hand 17C with respect to the cutting and stretching means 17 is fixed to the wire. The lower hand 17B for feeding, the lower hand 17C for feeding is opened and lowered to the original position to grip the wire, and then the lower hand 17B for fixing is opened and the lower hand 17C for feeding is lifted several times. By this, the small diameter part 1Ai +
The tip of No. 1 is the upper hand 12 for feeding from the chuck unit 14.
The wire end detector 19 detects the protrusion of the wire from the upper part to a predetermined length, and the wire end detector 19 grips and holds the upper hand 12.

When the polishing work of the inserted work of the taper wire 1 stretched over the working portion is completed, the cutting and stretching means 17 inserts the polished work from the tapered portion 1Bi into the large diameter portion 1Ci. When the detection sensor 17D detects the next small diameter portion 1Ai + 1 of the taper wire 1, the detection sensor 17D stops. Next, lower hand for wire feeding 17
When C grips the next small diameter portion 1Ai + 1 of the taper wire 1 and the product box 18 is sent to the receiving portion,
The wire cutter 17A cuts the continuous taper wire 1 near the tip of the small diameter portion 1Ai + 1 and inserts the ground work into the large diameter portion 1Ci.
To collect. At this time, on the other hand, one block of the used taper wire above the cutting position is picked up by the pick-up means 10 and processed by the curling processing means described later to be collected for disposal.

When the taper wire 1 in the previous step is removed from the processed portion, the cutting and stretching means 17 rises, the continuous taper wire 1 is pulled out against the back tension of the supply means 9, and is raised to the position shown in the figure and stopped. Next, lower wire feeding hand 17C and lower wire fixing hand 17B
And hand 17C rise, hand 17B grab, hand 1
7C open, descend, grab, hand 17B open, hand 17C
When the small diameter portion 1Ai + 1 is projected upward by a predetermined length in the wire feeding upper hand 12 by repeating the ascending, the wire end detector 19 detects and grips it.

From the parts feeder 11 to the straight feeder 11
A picks up one work piece and advances it to align the center hole of the work piece with the wire insertion hole of the pulling means 10. When the upper hand 12 raises the taper wire for a predetermined length while gripping the taper wire as described above, the small-diameter portion 1Ai + 1 of the wire inserted through the center hole of the workpiece is inserted into the drawing means and fixed by being clamped. At this point, the work piece opened by inserting the upper hand 12 is dropped toward the taper portion 1Bi. The straight feeder is retracted, and the upper hand 12 grips the wire and lowers it to the original position by a predetermined distance. At this time, the taper wire in the processed portion is not bent by the back tension on the side of the supply means 9. After that, the above operation is repeated until a predetermined number of workpieces are inserted.

When the loading of a predetermined number of workpieces is completed, the rotary motor 13 for polishing is moved up and down along a guide such as a rail (not shown), and the workpiece sensor 16 detects and grips the workpiece at the bottom. Grasp it on the chuck 14 and move it downward while rotating the work piece.
The required inner diameter polishing process is completed while moving to 1. At this time, the taper wire 1 is fixed by the wire feeding upper hand 12, the tension fluctuation of the taper wire 1 is detected, and the vertical movement of the rotary motor 13 is servo-controlled to prevent abnormal high load.

When the polishing work of the number of workpieces inserted in the taper wire 1 is completed, the cutting and stretching means 17 is moved down and stopped when the detection sensor 17D detects the next small diameter portion 1Ai + 2 of the taper wire 1. . Next, the wire feeding lower hand 17D is closed to close the small diameter portion 1A.
Cut near the tip of i + 2. After that, the paragraph [0
034], as long as there are workpieces to be ground,
Alternatively, as long as the continuous taper wire 1 of the supply means 9 is provided, the polishing process is continued automatically.

FIG. 6 is an enlarged explanatory view of the above-mentioned take-up means 10 portion, and FIG. 7 is a principle explanatory view of the curling process for the waste taper wire which is also executed in the take-up means 10 portion.

In the figure, the wire feeding upper hand 12
The tip of the small-diameter portion 1Ai grasped by the vertical movement of the wire is an upper hand 10A for fixing the wire which is opened and closed in the take-up means 10.
In addition to the operation of inserting the workpiece by repeatedly opening and closing the fixing upper hand 10A so as to be inserted into the center hole of the workpiece while being clamped and fixed to the workpiece, the fixing upper hand 10A includes the continuous taper wire 1 described above. The following operations are involved in the curling process and discarding of the taper wire 1 left in the processed portion due to the cutting.

In the work insertion operation, the small diameter portion 1Ai is inserted after the last work insertion in each polishing process.
When the upper end remains clamped and fixed to the fixing upper hand 10A, the next curling process can be immediately performed, but the small diameter portion 1Ai is not clamped and fixed to the fixing upper hand 10A. In this case, it is necessary to start the curling and discarding operation from the step of raising the wire feeding upper hand 12 holding the small diameter portion 1Ai.

When the upper narrow diameter portion 1Ai of the taper wire 1 cut at the lower portion is clamped and fixed by the wire fixing upper hand 10A of the take-up means 10, when the curling and discarding processes are instructed, the above fixing upper portion. Hand 10A
Directly underneath, by rotating the fixing upper hand 10A with the wire of the small diameter portion 1Ai being pressed against the ironing surface of the base metal 21 by the brake roller 22, the taper wire 1 that is cut and remains in the processing portion is ironed. While curling up, curling is performed at the same time.
When the rear end of the taper wire 1 is wound up until it comes out of the ironing section, the taper wire 1 wound up is loosely wound around the fixing upper hand 10A with a space therebetween, and When the grip is released, the curl treatment waste of the taper wire can be removed from the fixing upper hand 10A by an ejector having a hooking piece, a gripping piece, or an electromagnet, taken out, and transferred to a waste box or the like. Of course,
The hand 10A may be pulled in a hole or the like by moving in the axial direction so that the curl-processing waste may fall out.

FIG. 8 is a schematic structural explanatory view of the second embodiment of the present invention in which the continuous taper wire 1 is supplied to the polishing portion from above. In the figure, a predetermined number of workpieces inserted into the wires of the lower thin portion 1Ai are transferred upward while sequentially rotating from the upper one, and the workpieces that have been ground are the upper thick portion 1Ci of the upper portion. Stocked in. When the polishing work of the set workpiece is completed, the wire feeding upper hand 12 grasping near the lower end of the large diameter portion 1Ci is
Along the guide rails 23 and the like, it descends to a position 12B below, and by this descending, the ground work piece is machined to the large diameter portion 1Ci.
The taper wire 1 to be used in the next polishing process is pulled out from the continuous taper wire winding and supplying means 9 to the processing section while being lowered and transferred to the position shown in the drawing.

When the tip of the next small-diameter portion 1Ai + 1 of the taper wire 1 reaches the cutting position by the cutter 17A by the lowering, and the small-diameter portion detecting sensor 17D detects the lowering of the hand 12B, The front of the taper wire 1 is clamped and fixed to a take-up means 10 having a take-up roller, and a predetermined tension is applied by the take-up torque and the back tension of the supply means 9. Then, the small diameter portion 1Ai + 1 which is the tip of the next taper wire 1
After the wire of the small-diameter portion 1Ai + 1 is clamped by the feed roller 12C of the wire insertion / feed means provided at a position rearward from the cutting position, the continuous taper wire 1 is cut by the cutter 17A at the detection position.

As the wire in front of the cutting position is transferred to the curling processing means or the discarding means by the pulling means 10, the inserted and ground work piece is dropped into the product box 18 and collected. To do. When the used taper wire 1 from the previous step is removed from the processing part, a predetermined number (for example, 20) of workpieces supplied from the part feeder 11 in advance, such as during polishing, are arranged in a column and stored. The stocker 11B is installed on the wire fixing claw 24 so as to be aligned in series with the center hole of the workpiece in the stocker 11B in the wire insertion path immediately below the cutting position of the taper wire 1.

Next, by driving the feed roller 12C, the continuous taper wire 1 is moved to the small diameter portion 1Ai + 1.
Is slowly inserted forward into a center hole of a predetermined number of workpieces arranged from above, and the tip of the small diameter portion 1Ai + 1 is clamped by the take-up roller of the take-up means 10 via the fixed pawl 24, and then the feed is performed. The roller 12C is opened, the wire feeding upper hand 12B is returned upward, and the polishing process of the next step is started.

[0047]

As described in detail above, according to the present invention,
The required large amount of taper wire having a thin straight portion, a tapered portion, and a large diameter straight portion in series is used to manufacture and use a continuous tapered wire that is continuously connected. , The required number of workpieces are polished, while the polished workpieces are aligned and supplied from the parts feeder, and the small diameter part of the continuous taper wire's cut end is inserted into the center hole, so long-term continuous operation is possible. Automatic operation is possible and the productivity can be significantly increased.

[Brief description of drawings]

FIG. 1 is an explanatory view of almost one block portion of a continuous taper wire used for polishing a wire type microhole of the present invention.

FIG. 2 is an explanatory view of several blocks of the continuous taper wire, similarly to FIG.

FIG. 3 is an explanatory view of an embodiment of an electrolysis apparatus for automatically and continuously producing a continuous taper wire.

FIG. 4 is an explanatory diagram of one characteristic relating to an electrolytic current value and a material wire moving speed with respect to time in the electrolytic apparatus of FIG.

FIG. 5 is a structural explanatory view of a first embodiment of a wire type fine hole polishing machine of the present invention using a continuous taper wire.

FIG. 6 is an enlarged explanatory view of a part of FIG. 6 and a take-up means part.

FIG. 7 is an explanatory view of the principle of the operation in FIG.

FIG. 8 is a structural explanatory view of the second embodiment with respect to FIG.

[Explanation of symbols]

1 Continuous taper wire 1Ai small diameter part 1Bi taper part 1Ci large diameter part 1S material wire 2 Material wire supply section 3 Roll-up collection section 4 Electrolytic processing department 4A electrolysis tank 4B electrode tube 4C power supply 5 Post-processing section 5A clean tank 5B Wash water injection means 5C felt roller 5D anti-corrosion paraffin applying means 5E Hot air drying means 6 Marker giving means 7 Outer diameter measuring means 8 torque motor 9 Supply means 10 Insertion and collection means 10A Wire fixing upper hand 11 parts feeder 11A straight feeder 11B stocker 12 Wire feeding upper hand 12C wire feed roller 13 Rotary motor for polishing 14 gripping chuck 15 dispensers 16 Workpiece sensor 17 Cutting and stretching means 17A wire cutter 17B Wire fixing lower hand 17C Lower hand for wire feed 17D small diameter sensor 18 product boxes 19 Wire end detector 20 wire guide 21 Ironing base 22 Brake roller 23 Guide rail 24 wire fixing claw

Claims (8)

[Claims] 1. A plurality of cylindrical workpieces each having a minute central hole are inserted into a tapered wire having a small diameter portion, a tapered portion, and a large diameter portion, each of which has a predetermined length and is formed in a straight line, and one or a plurality of the workpieces are inserted. A device for polishing a center hole of a workpiece by supplying a grinding slurry between the workpieces while rotating the workpieces and relatively moving the workpieces from the small diameter side to the large diameter side, Is a continuous taper wire in which the rear end of the large diameter portion is continuously connected to the tip of the small diameter portion of the next taper wire between the desired plurality of adjacent taper wires, and the taper wire is wound into a winding storage section. Each block of taper wire is provided so that it can be fed vertically to the polishing section with the small diameter side as the tip.
(A) Aligning the center holes of a required number of workpieces that are evenly supplied from a parts feeder with an unobstructed straight path prepared for a taper wire sent through the polishing section, (b) The taper wire is fed by a feeding device so that the center hole of the workpiece is aligned and the center hole of the workpiece is inserted from the tip small diameter side of the taper wire.
(C) After inserting a predetermined number of the work pieces, the taper wire is fed out, and the small-diameter tip portion is clamped and fixed to the winding means to set the work portion taper wire in a predetermined tension state, and (d) the taper wire. The workpiece inserted in the small-diameter portion is moved from the large-diameter side to the large-diameter side while rotating in order, so that the taper portion is ground under the polishing slurry interposition, and (e) The workpiece is inserted into the large-diameter portion every time it reaches the polishing state, and (f) when the polishing work of the workpiece inserted in the small-diameter portion is finished, with respect to the taper wire of one block of the processing portion. With the cutting device positioned, the taper wire is fed out and used at the tip small diameter part, and (g) the polished finished workpiece stocked in the large diameter part is extracted and collected by the product collecting means. , The wire type micro hole polishing method characterized by the used Tepawaiya recovering waste to leaving over processing unit. 2. A plurality of cylindrical workpieces each having a minute central hole are inserted into a taper wire having a small diameter portion, a taper portion and a large diameter portion, each of which has a predetermined length and is formed in a straight line, and one or a plurality of the workpieces are inserted. A device for polishing a center hole of a workpiece by supplying a grinding slurry between the workpieces while rotating the workpieces and relatively moving the workpieces from the small diameter side to the large diameter side, Is a continuous taper wire in which the rear end of the large-diameter portion is continuously connected to the tip of the small-diameter portion of the next taper wire between the desired plurality of adjacent taper wires. Means for supplying a continuous taper wire, and means for cutting the continuous taper wire at the tip of the small-diameter portion of the new taper wire in the next polishing step in response to the end of the polishing process in one step,
Means for extracting and recovering the workpiece polished in the previous step from the taper wire in the previous step, means for recovering the cut taper wire in the previous step, and supplying the workpieces one by one in order. A parts feeder, a means for sequentially inserting and setting a predetermined number of workpieces supplied by the parts feeder from the tip of the thin portion of the cut taper wire in the next step, and a work inserted in the thin portion of the taper wire. By rotating the object from the large diameter part side to the large diameter part side while rotating in order, the taper part is ground under the polishing slurry interposition, and the machined part that reaches the predetermined polishing processing state is changed to the large diameter part. A wire-type micro-hole polishing machine characterized by having a means for inserting and stocking. 3. The wire type fine hole polishing machine according to claim 2, wherein the continuous taper wire is supplied from the bottom to the top by the supply means of the continuous taper wire to the polishing portion. 4. The wire type fine hole polishing machine according to claim 2, wherein the continuous taper wire is supplied from the top to the bottom by the supply means of the continuous taper wire to the polishing portion. 5. The wire type fine hole according to claim 2, wherein the continuous taper wire is supplied to the polishing portion by the supply means for the continuous taper wire with the smaller diameter portion side as the first end. Polishing machine. 6. The means for cutting the continuous taper wire has a detection means for detecting the small-diameter portion of the continuous taper wire, and detects the small-diameter portion during relative movement between the continuous taper wire and the cutting means to perform relative movement. The wire type fine hole polishing machine according to claim 2, 3, 4, or 5, which can be stopped. 7. The work center hole is inserted into the tip of the small diameter portion of the continuous taper wire for each one of the work pieces according to claim 2, 3, 4, 5 or 6. Wire type micro hole polishing machine. 8. A plurality of cylindrical workpieces each having a minute central hole are inserted into a taper wire having a small-diameter portion, a taper portion, and a large-diameter portion, each of which has a predetermined length and is formed in a straight line, and one or a plurality of the workpieces are inserted. A taper wire for use in a device for polishing the center hole of the workpiece by rotating the individual workpieces and relatively moving the workpieces from the small diameter portion side to the large diameter portion side by supplying a grinding slurry between them. The taper wire is manufactured as a continuous taper wire in which the rear end of the large-diameter portion is sequentially connected to the tip of the small-diameter portion of the next taper wire between the desired plurality of adjacent taper wires. 2. A continuous taper wire for rapid use in a wire type fine hole polishing machine, characterized in that an index capable of being detected as a cutting position is previously attached to a tip position of a small diameter portion connected to the rear end of the large diameter portion.