JP5305178B2 - Ball finishing machine - Google Patents

Description

  The present invention relates to an improvement in a ball ballast, a ball screw, a linear guide, a ball used for a constant velocity joint or the like, and a glass ball finishing apparatus which is processed into an optical lens by press molding.

  There are the following two main apparatuses for finishing a conventional ball. One is a horizontal axis type processing apparatus shown in FIG. 8 as described in, for example, Patent Document 1, and this apparatus is provided with a groove 24 on which a ball rolls concentrically on a stationary platen 21 having a notch 23. There is a rotating disk 22 in which grooves that roll to opposite positions are arranged concentrically like the fixed disk 21, and a ball B to be processed is inserted into the groove between the two disks, and the rotating disk 22. A rotating conveyor 25 that can hold a large amount of balls B is attached to the side of both boards, and the inside of the conveyor 25 is partitioned by a partition plate 26 and is connected to the supply side. Is provided with a chute 27 for supplying the ball B from the conveyor 25 to the groove of the board below the notch 23 of the fixed platen 21, and the ball B is discharged from the board to the discharge side of the conveyor 25 above the notch 23. Discharge chute 28 is provided that. Since this apparatus has the structure as described above, a large amount of balls B can be placed on the conveyor 25, and these balls can be processed at a time, which is advantageous in terms of processing cost. However, since the rotating shaft of the turntable 22 is horizontal, when the machining is completed, the machine must be stopped while lowering the pressure applied to the ball, and is sandwiched between the turntable 22 and the fixed platen 21. Since the pressure of the ball becomes unstable and stops while being discharged by the rotation of the board, the ball in the board is easily scratched and must be separated from the ball on the conveyor accurately. There is. Further, the ball flow direction changes by 90 ° at the time of supply and discharge of the ball at the notch 23 of the fixed platen 21, and the force in the tangential direction of the groove due to the rotation of the rotary platen 22 is applied at the time of supply. As a result, there is a drawback that the behavior becomes unstable and causes scratches.

On the other hand, the other is the saddle type processing apparatus shown in FIG. 9 as described in Patent Document 2, for example, which is also a notch hole 31 (there may be no hole) as in the horizontal axis type processing apparatus. There are a plurality of grooves on which a ball rolls on a fixed plate 21 having a rotating plate 22 in which the balls roll on the same position as the fixed plate, and a groove between the two plates. This is a structure that contains a plurality of balls B to be machined. This is because the rotary shaft 30 of the turntable 22 is not equipped with a conveyor that holds a large amount of balls to be machined, unlike the horizontal axis type processing device. It will rotate after being stored, and the number of processing at one time is limited and not economical. However, the ball to be processed is placed on the rotating disk, and when the processing is completed, the machine can be stopped while lowering the pressure, and there is an advantage that there is no inaccuracy of the ball in the board and no scratches are generated. .
JP 2006-35336 A JP 2005-28514 A

  As described above, each of the conventional horizontal axis type and vertical type machining apparatuses has advantages and disadvantages, and the horizontal axis type machining apparatus suitable for large-capacity machining is impossible when supplying and discharging to the board. The force acts on the balls, causing scratches, and the balls in the fixed platen and the rotating plate at the end of machining have inaccuracy and scratches, so they are separated from the finished balls on the conveyor. Since there is a problem that the yield is poor, the vertical processing apparatus with a high yield has a problem that a large capacity cannot be processed without a conveyor.

  In view of the above situation, the present invention attempts to improve the horizontal axis machining apparatus particularly suitable for large-capacity machining in a stable manner. In other words, it is possible to process large volumes with high accuracy by finding the inclination of the mounting surface of both the fixed and rotating wheel grinding wheels with respect to the horizontal direction and attaching a ball transfer mechanism to and from the conveyor. An object of the present invention is to provide a ball finishing apparatus that does not cause scratches.

That is, the finishing device of the present invention that achieves the above object includes a stationary plate having a notch in a part of the disk and a grindstone having a plurality of concentric grooves on which one of the balls rolls on one side. It consists of a rotating plate mounted with a grindstone facing the groove side and having the same number of concentric grooves where the ball rolls as the fixed platen, and the ball, which is the workpiece, is pressed against the opposed groove of the fixed platen and the rotating platen. A finishing machine for a ball that is held in a fixed position, with a fixed platen placed on the top or bottom, a turntable placed on the bottom or top, and the mounting surface of the fixed and turntable grindstone inclined at 5 to 45 degrees from the horizontal direction. together have, a feed chute for supplying the ball groove sandwiched discharge chute and the stationary platen and rotating disk retrieving the ball from the fixed platen and sandwiched turntable groove in the notch portion of the fixed plate next provided, and further fixed plate and the rotary plate, By arranging the conveyor in a large amount held rotatable balls that factory on the conveyor, feed chute side or supplying balls sandwiched by grooves in the rotating disk and the fixed plate from the conveyor, or stationary platen and turntable the ball discharged from the groove sandwiched discharge chute side to take out the conveyor, the elevator also using the bucket, characterized in that additionally provided a ball transfer mechanism for transferring the balls due escalator.

In the discharge chute for taking out the ball from the groove sandwiched between the stationary platen and the rotary platen of the notch part of the stationary platen in the above configuration, it is preferable to provide a tongue-shaped ball scoop portion corresponding to the number of grooves. .

As described above, the finishing device of the present invention fixes a fixed platen and a rotary plate, each mounted with a grindstone having a plurality of grooves for rolling the balls facing each other, fixing the fixed plate on the upper side and the rotary plate on the lower side or vice versa. In the structure in which the panel is disposed on the lower side and the rotating disk is disposed on the upper side, the mounting surface of the fixed / rotary disk grindstone with respect to the horizontal direction, in other words, the rotation axis is inclined by 5 to 45 degrees from the vertical direction. A rotating conveyor capable of holding a large amount of balls to be processed horizontally is provided, and a ball transfer mechanism is attached to the ball supply chute side or ball discharge chute side from the conveyor using a bucket to transfer the ball by an elevator or escalator. Therefore, high-capacity machining is possible, the accuracy of the balls remaining in the grooves of the fixed plate and the rotating plate at the end of machining is ensured, and all are commercialized without scratches, so the yield is Come in a significant improvement over the horizontal axis type processing apparatus, therefore, has a remarkable effect processing is a cost advantage. In addition, the change in the flow of the ball at the time of supply and discharge to the board becomes gentle compared to the horizontal axis type processing apparatus, and the behavior of the ball is stabilized.

It is a perspective view which shows the case of a fixed board upper direction in one example of the finishing apparatus of this invention ball | bowl. FIG. 2 is a plan view of the apparatus of FIG. 1. It is a front view which shows the principal part of the apparatus of FIG. It is explanatory drawing which similarly shows the inclination of the stationary platen and rotary disk junction part of the apparatus of FIG. It is a perspective view which shows the example of this invention apparatus in case a fixed plate | board is below. It is explanatory drawing which shows the inclination of a stationary platen and a turntable in the case of FIG. It is a figure which shows a tongue-shaped ball scoop part, (A) is an enlarged view, (B) is ZZ sectional drawing in (A). It is a perspective view which shows the whole conventional horizontal axis type processing apparatus. It is a schematic diagram of the conventional vertical processing apparatus.

  Hereinafter, specific embodiments of the device of the present invention will be described with reference to the accompanying drawings. 1 to 4 show an example of a finishing apparatus according to the present invention, in which 1 is a stationary platen, 2 is a rotating plate, and both plates have a plurality of grooves concentrically having a plurality of grooves for rolling balls on opposite surfaces. Is mounted and the ball is machined between the two boards in the same manner as in the conventional fixed board and the rotary board, and the fixed board 1 is provided with a notch 3. After processing from the supply chute 5 for supplying the ball B to the groove sandwiched between the fixed plate and the rotating plate from the conveyor 4 installed beside the fixed plate 1 and the rotating plate 2, and from the groove sandwiched between the fixed plate and the rotating plate, A discharge chute 6 for taking out and discharging the ball B is connected in series, and the supply of the ball to the processing device composed of the fixed plate and the rotating plate and the discharge of the ball from the processing device are performed as in the conventional horizontal shaft type processing device. It is.

  However, the processing apparatus of the present invention is different from the conventional horizontal axis processing apparatus described above, as shown in FIGS. 1 and 2, a discharge chute for discharging balls processed between the fixed platen 1 and the rotary platen 2. 6 is provided with a receiving box 7, and the ball is accommodated in a bucket 9 waiting at the outlet through an outlet 8 and is moved upward of the conveyor 4 by an elevator A having an elevating mechanism 10. It is discharged from the discharge unit 11 into the conveyor.

  Thus, in the processing apparatus having the above-described configuration, the present invention particularly takes advantage of the vertical processing apparatus into the horizontal axis type processing apparatus, and fixes the arrangement of the fixed platen 1 and the rotary platen 2 as shown in FIGS. The grindstone mounting surfaces of the discs, the rotary discs 1 and 2 are inclined by 5 to 45 degrees from the horizontal direction. Here, in the above description, the grindstone mounting surface of the stationary platen and the rotating plate is described as being inclined by 5 to 45 degrees from the horizontal, but the rotation axis of the rotating plate 2 is 5 to 45 degrees with respect to the vertical direction as shown in FIG. The same applies to the tilt.

  1 to 4, the fixed platen 1 is arranged on the upper side and the fixed platen 2 is arranged on the lower side. However, the fixed platen 1 may be arranged on the lower side and the rotary platen 2 may be arranged on the upper side. .

  5 and 6 show the case where the fixed platen 1 is arranged on the lower side and the rotary platen 2 is arranged on the upper side, and the other structure is substantially the same as the structure shown in FIGS. Similarly, the mounting surface of the grinding wheel is 5 to 45 degrees from the horizontal direction, or the rotation axis of the rotating disk is inclined by 5 to 45 degrees with respect to the vertical direction.

  The processing apparatus of the present invention described above is characterized by incorporating the advantages of the vertical processing apparatus while having the form of the horizontal axis processing apparatus as described above. In other words, in a horizontal axis machining apparatus suitable for large-capacity machining, since the rotation axis of the rotary disk is in the horizontal direction, the balls in the grooves of both disks move in the direction of gravity. There is a problem when supplying, discharging, or stopping the ball, but the vertical processing machine that can only process a small amount has the rotation axis of the rotating plate in the vertical direction, and the ball in the groove between the fixed plate and the rotating plate is on the rotating plate. Is not affected by gravity.

  Therefore, in the apparatus of the present invention, as shown in FIGS. 3 to 6, the rotation axis of the machining apparatus is tilted from the vertical direction or the mounting surface of both the fixed and rotating grinding wheels is inclined by 5 to 45 degrees from the horizontal direction. It is improved so that an excessive force is not applied to the balls at the time of supply / discharge of the balls at the notch portion 3 and the conveyor 4 that cannot be attached by the conventional vertical processing apparatus can be attached. Here, the inclination of 5 to 45 degrees is an angle at which the rotating disk 2 is kept stationary, a predetermined amount of balls are put into a groove on which the ball of the rotating disk 2 rolls, and the ball does not spill from the groove due to its own weight. At this angle, the machining is complete, the applied pressure is released, and the ball remains in the groove of the rotating plate even if the fixed plate is moved away from the rotating plate. It is easy to beat by rotating.

  In other words, in the conventional horizontal shaft type processing apparatus, the ball is supplied from the supply chute corresponding to the plurality of grooves into the grooves of the fixed plate and the rotary plate, using the gravity of the ball in the groove, Also, taking out from the groove of the board is a structure that similarly uses the gravity of the ball and returns it to the conveyor. In the case of the vertical type, the fixed board and the rotating board are horizontal, so the ball from the groove of the board is The removal will be against gravity, and if it is taken out in this state, the ball will be scratched, so a conveyor could not be attached to the finishing process of the ball. The mounting surface of the fixed and rotating both-board grinding stones is tilted from the vertical or horizontal direction as shown in FIGS. 3 and 4, etc., and the ball is taken out from the groove of the board at the angle according to the tilt angle and the ball is used with the chute. To feed into the groove of the board That.

  Here, when the inclination angle of the board is small, in order to facilitate the discharge of the ball from the rotating disk, a tongue-shaped ball scooping portion 12 is provided in the groove of the discharge chute 6 as shown in FIG. Discharge is possible without scratching.

  Next, the installation of the conveyor necessary for large-capacity processing will be described. A mechanism for feeding balls from the conveyor 4 into the grooves of the fixed platen 1 and the rotating platen 2 and a mechanism for discharging the balls from both of the platen grooves to the conveyor is usually a cutting of the fixed platen as shown in FIG. Since the notch is attached in the vertical direction, a supply chute 5 for supplying the ball into the disk groove is provided below the notch, and a ball discharge chute 6 from the disk groove is provided above the notch. Since the conveyor 4 has the rotating disk 2 in the vertical direction, the supply and discharge of the balls can use the gravity of the balls.

  However, in the case of the apparatus of the present invention, the rotation axis of the rotating disk is inclined by 5 to 45 degrees from the vertical direction, so that the vertical distance of the notch 3 of the fixed disk 1 is equal to the normal horizontal axis machining apparatus. Therefore, the supply from the conveyor 4 to the board groove and the discharge from the board groove to the conveyor using the gravity of the ball are either one of them. For this reason, when the gravity of the ball is used from the conveyor on the supply side, the discharge side is located below the conveyor, so the balls are stored in the receiving box 7 as shown in FIGS. The bucket 9 is moved to the upper conveyor 4 by an elevator or escalator A and discharged from the discharge section 11 into the conveyor 4 partitioned by the partition plate 13. However, when the discharge is received as it is by using the gravity of the ball, the conveyor 4 is lowered and the ball is transferred from the conveyor 4 to the bucket 9 to be supplied to the groove of the fixed plate 1 and the rotary plate 2. The bucket 9 is moved by an elevator or escalator A to a ball place provided at the upper portion, and is supplied into the groove through the supply chute 5.

Thus, the stationary platen mounted with a grindstone having a plurality of grooves for rolling the ball on one side and the rotating plate fitted with a grindstone facing the groove side of the plate and having the same number of grooves for rolling the ball as the fixed platen are mounted. In a ball processing apparatus that holds and processes a ball as a workpiece in a groove between grindstone surfaces, the mounting surface of the grindstone has an inclination of 5 to 45 degrees with respect to the horizontal direction or the rotation axis of the rotating disk with respect to the vertical direction. And a rotating conveyor that holds the balls to be processed provided beside the ball supply chute for supplying the balls to the opposing grindstone surface or the balls on the discharge chute side for taking out the balls discharged from the opposing grindstone surface to the conveyor By using a ball transfer mechanism that is used and transferred by an elevator or escalator, large-capacity processing is possible like a horizontal shaft type processing device, and the length of the saddle type In this way, the accuracy of the balls remaining in the grooves of the fixed plate and the rotating plate at the end of machining is ensured, and all the products are manufactured without scratches, so the yield is significantly higher than that of the conventional horizontal axis processing machine. To be improved. Further, as compared with the horizontal axis type processing apparatus, an excessive force is not applied to the ball during supply / discharge to the board, and the generation of scratches can be suppressed.

A: Elevator or escalator device B: Ball 1: Fixed plate 2: Rotating plate 3: Notch 4: Conveyor 5: Supply chute 6: Discharge chute 7: Receiving box 8: Extraction port 9: Bucket 10: Lifting mechanism 11: Discharge section to conveyor 12: Rake section 13: Partition plate

Claims (2)

A fixed plate with a notch in a part of the disk and a grindstone that has multiple concentric grooves on one side of the ball and a concentric groove on which the ball rolls is fixed. A finishing machine for a ball, which is composed of a rotating disk equipped with the same number of grindstones as the disk, and in which the ball, which is a workpiece, is held by applying pressure to the opposed grooves of the stationary disk and the rotating disk. panel the upper side or lower side, the rotary disc is disposed on the lower side or upper, fixed, with mounting surface of the rotating disk grindstone has a slope of 5 to 45 degrees above horizontal, cut of the fixed plate A discharge chute that takes out the ball from the groove sandwiched between the stationary platen and the rotating plate and a supply chute that supplies the ball to the groove sandwiched between the stationary platen and the rotating plate are provided in the notch, and further, beside the stationary platen and the rotating plate. Rotating conveyor that can hold a large amount of balls to be processed To the conveyor and arranged, one of the conveyor and the fixed plate turntable sandwiched by grooves in the feed chute side for supplying a ball, or a stationary platen and balls discharged from sandwiched by grooves in the rotating disk to the conveyor A ball finishing apparatus characterized in that a ball transfer mechanism for transferring a ball by an elevator or an escalator using a bucket is attached to a discharge chute side to be taken out. 2. A ball finishing apparatus according to claim 1, wherein a tongue-shaped ball scooping portion corresponding to the number of grooves is provided in a discharge chute for taking out a ball from a groove sandwiched between a fixed plate and a rotating plate at a notch portion of the fixed plate. .