JP4671996B2 - Axial grinding machine for ball processing - Google Patents

Description

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

  As shown in FIGS. 3 and 4, a vertical shaft polishing machine, which is one of conventional ball processing apparatuses, has a stationary platen 1 having a notch 5 (which may not have a notch) such as a fan shape or an ellipse shape. 5 is provided with a plurality of concave grooves, or wide concave depressions 6 as shown in FIG. 5, and there is a rotating disk 2 in which a plane or a ball rolling groove is formed and arranged in the same number as the fixed disk. In this processing apparatus, a plurality of balls are inserted between the two disks, and the rotation axis of the rotating disk 2 and the vertical movement center of the stationary disk 1 are in the vertical direction. If the amount of balls to be processed is large, the conveyor device 3 is connected, and the balls discharged from the board are transferred in the order of the board exit → conveyor device etc. → the board entrance, so that the balls that do not fit in the board. Is stored in a conveyor device 3 and the like and retracted from the polishing machine. At that time, the notch 5 of the fixed platen 1 must be separated as an entrance and an exit of the ball into the platen. In that case, the partition plate 4 is attached to the notch.

  However, as described above, in the case of connecting a conveyer device or the like that cuts out the fixed plate 1 in the conventional saddle-type polishing machine and has a large amount of balls to be processed and retreats the balls that do not fit in the plate. Since it is necessary to separate the notch as the entrance and exit of the ball into the board, it is necessary to attach the partition plate 4 to the notch and transfer the ball in the order of board exit → conveyor device → board entrance → board spacing → board exit. Therefore, the bottom surface of the partition plate and the top surface of the rotating disk 2 need to be in close contact with each other so that the ball does not go back and forth between the disk inlet and the outlet. However, depending on the machinability of the ball and the properties of the rotating disk grindstone, The amount of wear of the rotating disk grindstone due to the above is large, and by continuing the processing, a gap S is generated between the bottom surface of the partition plate and the upper surface of the rotating disk, as shown in FIG.

  Accordingly, the present invention addresses the above-described problems, and prevents the gap between the bottom surface of the partition plate and the top surface of the rotating disk during the processing process, thereby enabling stable processing even when the grindstone of the rotating disk is worn. The purpose is to provide a machine.

That is, the device of the present invention suitable for the above-mentioned object has a flat disk shape and the rotation axis is in the vertical direction. The lower surface on which the ball rolls is equipped with a grindstone or a casting, and a plurality of concave grooves or wide concave depressions are provided in this part, and a fixed plate capable of vertical movement in the vertical direction is arranged facing the rotation. A ball processing apparatus for polishing a ball, which is a workpiece, between a plate and a fixed plate, and the balls discharged from the space between the plates into the notch of the fixed plate are removed from the plate → a conveyor or the like In a structure with a partition plate that moves in the order of equipment → panel entrance, if the partition plate can be moved downward according to the amount of wear so that there is no gap between the bottom surface of the partition plate and the surface of the rotating plate due to wear of the rotating wheel grinding wheel due to processing. tighten Rutotomoni, Siri from above the partition plate Suitably a force in a downward direction at a pressure mechanism, such as loaders and springs, and wherein the configuration without the structure bottom and turntable of the upper surface of the partition plate is always in close contact.
In addition, it is effective to attach a receiving blade for scooping up the balls coming out from the upper and lower panels to the tip of the partition plate.

As described above, the present invention is a saddle-type polishing machine in which a large amount of balls to be processed is connected to a conveyor device or the like for retracting balls that do not fit in the board, and a partition plate that separates the inlet and outlet from the fixed plate notch is provided. With the provided structure, the partition plate is movable downward, and an appropriate downward force is applied from above the partition plate with a pressurizing mechanism, so that no gap is generated between the partition plate bottom surface and the rotating plate top surface. Therefore, even if the rotating plate grindstone wears, the partition plate moves according to the wear, and there is no gap between the partition plate and the upper surface of the rotating plate, so that a defect such as a ball biting into the gap occurs. Has no effect.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 3 and 4, the device of the present invention has a vertical axis of rotation, a rotating disk having a grindstone on the upper surface, a disk-like shape on the upper surface, and a notch in a part thereof. The rolling lower surface is equipped with a grindstone or a casting, and is formed with a plurality of concave grooves or wide concave depressions. Focusing on the partition plate attached to the notch part of the fixed plate in the vertical shaft type polishing machine connected with the conveyor device retracted from the polishing machine, the improvement is aimed at, and the rotating plate, fixed plate and conveyor device are Since the configuration of the apparatus main body including this is basically the same as that of the conventional apparatus shown in FIGS. 3 and 4, detailed description thereof will be omitted.

  FIG. 1 shows a notch portion of a fixed plate of a vertical shaft type polishing machine that is a characteristic part of the present invention. In the figure, reference numeral 10 denotes a fan-shaped hopper provided upright in a notch 5 of the fixed plate 1. The partition plate 4 in the above-described conventional machine is mounted in the sector hopper 10 so as to be movable up and down.

  Here, the partition plate 4 is attached in the fan-shaped hopper 10 in which the inner dimension thereof is made to be approximately the same as the notch 5 of the fixed platen 1 and the fixed platen notch is positioned by being attached to the fixed platen. By attaching a concave partition holder 12 to the partition block 11 to be, the partition plate 4 is held between the two as a guide so as to be movable up and down.

  A receiving blade 13 is attached to the end of the partition plate 4 that is held in the partition block 11 and the partition holder 12 so as to easily pick up the balls that have come out from between the boards. Further, a spring retainer 14 is provided on the upper portion of the partition plate 4, and a compression spring 15 is sandwiched between the partition plate 4 and the spring retainer 14 as an example of a pressurizing mechanism, and a downward force is applied to the partition plate 4. The bottom surface is always in contact with the top surface of the turntable 2.

FIG. 2 conceptually shows the characteristics of the present invention. Even when a gap is generated between the bottom surface of the partition plate 4 and the top surface of the rotating plate 2 along with the wear of the rotating plate grindstone due to the sandwiching of the compression spring, A downward force is always applied by the compression spring 15 so that the contact can be maintained. Thus, it is possible to prevent a gap from being formed between the bottom surface of the partition plate and the top surface of the rotating disk in the conventional polishing machine, and the biting of the ball by the gap is prevented, and stable machining can be continued.

The partition plate part in the fixed disk notch which makes the characteristic of the device concerning the present invention is shown, (I) is a perspective view, and (B) is an exploded view. It is explanatory drawing which showed the characteristic of this invention notionally. It is a perspective general view which shows an example of the conventional spindle type grinder which attached the conveyor apparatus and the partition plate. FIG. 4 is a perspective overview showing a saddle shaft type polishing machine of a different type from that in FIG. 3 to which a conveyor device and a partition plate are attached. It is a figure which shows the state of the rotary disk of the processing initial stage and the latter stage at the time of processing a ball with a vertical polishing machine. (A) has a plurality of concave grooves, (b) has a wide concave depression. Is the case.

Explanation of symbols

1: Fixed platen 2: Rotating plate 3: Conveyor device 4: Partition plate 5: Notch 6: Groove and recess 13: Receiving blade 14: Spring presser 15: Compression spring S: Gap

Claims (2)

A flat disk with a vertical axis of rotation, a rotating disk with a grindstone on the upper surface, a disk-shaped upper part with a notch in the upper surface, and a lower surface on which the ball rolls with a grindstone or casting. A fixed plate that can be vertically moved in a vertical direction by providing a plurality of concave grooves or wide concave depressions in this part, and is a workpiece between the rotary plate and the fixed plate. A ball processing device that polishes balls by applying pressure, and a partition plate is provided in the notch portion of the fixed platen to move the balls discharged from between the plates in the order of the plate exit → retracting device such as a conveyor → board entrance. in construction, if vertically movable together partition plate to depletion amount so that a gap to the rotating disk surface and the partition plate bottom by depletion of the rotating disk grindstone by the processing does not occur tighten Rutotomoni, cylinder Ya from above of the partition plate For pressure mechanisms such as springs A suitable downward force is added, a ball working vertical axis grinder, characterized in that without a structure that the bottom surface and the rotating disk of the upper surface of the partition plate is always in close contact. Ball processing of claim 1 Symbol placement mounted receiving blade scoop up the ball out from between the upper and lower board at the tip of the partition plate vertical axis grinder.

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