JPS62148150A - Automatic modifying mechanism for lens spherical surface in lens polishing device - Google Patents

Abstract

PURPOSE:To contrive to automatically and continuously adjust a polishing device by arranging the constitution in such a way that the lap modification of a polishing plate may be done while a polishing arm is supplying or removing a lens on a belt system before the device. CONSTITUTION:A slide shaft 3 from shifting a polishing arm 4 up and down and a slide shaft 20 for shifting a modifying arm 21 up and down are so installed as to be opposed inside a slidebase 2 for shifting a slide head main body 1 back and forth. These up-and-down shiftings are done by air cylinders 6, 23 respectively. And a polishing bath is so installed that it may be in the same position as the lens polishing holder of the polishing arm 4 when the slidebase 7 retreats to the position shown in a figure and in the same position as the polishing plate modifying holder of the modifying arm 21 when the base 7 advances. By this fundamental constitution, the polishing plate is automatically and continuously managed and lap modification is done at a specified condition at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lens polishing apparatus, and more particularly to an automatic correction mechanism for a spherical lens surface.

Conventional technology In conventional lens polishing methods, due to the precision required for the spherical surface of the lens, all adjustments were generally made manually, relying on human experience and sense.
The operation was stopped to check the accuracy and readjust the equipment.
As a result, not only does this result in low operating efficiency, but it also lacks stability in terms of quality, lacks reproducibility, and makes it difficult to maintain a certain level of accuracy. It was not possible to extract it from the operation. By obtaining this word, we can supply and remove lenses. Of course, this is a problem in the case of so-called f-dynamic polishing machines, but it is a major problem in automatic polishing equipment that performs feeding, removal, and polishing without manual intervention. When a lens is being polished, the lens is pressed against the polishing holder and polisher, rotates and swings, and is lapped and polished in accordance with the spherical surface of the polisher. In this case, conversely, the polisher is lapped by the spherical surface of the lens, and the spherical surface of the polisher is changed. Due to this,
It becomes impossible to maintain the same lens spherical accuracy for a long time under the same conditions. Therefore.

There are two methods to maintain the same lens spherical accuracy (method of changing the 4.fl movement angle of the D polisher, ■ method of correcting the spherical surface of the polishing plate to the reference spherical surface. ■ method has been widely used to date. This method involves checking the accuracy of the lens spherical surface after polishing by comparing it with a reference spherical surface, and then changing the swinging angle of the lens polishing machine appropriately according to the human senses, so there is a large variation among individuals, and it takes a long time. It is difficult to maintain the same lens spherical accuracy and requires a high level of trial. This is a method of correcting the ramp of the polisher by pressing on the polisher, rotating and rocking it. Conventionally, the ramp was corrected by manually pressing a spherical surface correction jig against the polisher from an appropriate direction with an appropriate force. ■
Like the above method, this method required a high level of skill, but it was always possible to physically correct the surface using a spherical surface correction jig. In particular, the characteristics of 1) are the pressing force for pressing the spherical surface correction jig against the polishing tool, the direction of the pressing force, the rotational speed of the polishing tool when correcting the lap = 1, the swing speed and swing angle, the wrap If various conditions such as time are kept constant, the polisher will always be lapped to a constant spherical accuracy. Although this is convenient for polishing lenses to a constant spherical precision, the structure of conventional polishing machines precludes manual correction operations.

Problems to be Solved by the Invention The present invention was developed by the applicant and filed for patent (Japanese Patent Application No.
This is an improved version of the lens polishing device (No. 154730), which automatically controls the precision adjustment of the lens spherical surface, dramatically increasing the work efficiency of lens polishing and maintaining the high precision of the polished lens. There are problems that the present invention seeks to solve.

Means for Solving the Problems The present invention was developed to solve the above problems, and includes a polishing arm equipped with a lens polishing holder at the tip and a polishing tool correction holder at the tip. The main body of the slide head has a correction arm attached to a slide shaft for downward movement, a slide base that can be moved back and forth via the slide shaft, and a polishing tank equipped with a polishing device for the lens polishing holder. ,
Furthermore, the H upward movement of the slide bed main body and the 111 backward movement of the slide pace are made to move via air cylinders, and the correction arm is attached to the holder shaft, and the tip of the holder shaft is engaged with the ten-ruder flan. All of the problems of the present invention are solved by providing an automatic correction mechanism for the lens spherical surface in a lens polishing apparatus, which comprises a polisher correction holder with a polisher correction holder and a polisher correction holder whose holder flange is screwed onto the correction holder. That is, the solution to the problem of the present invention is as follows: 1) automating the lap correction operation of the polisher via an air cylinder; 2) supplying the lens on the polishing arm or belt system in front of the device; The aim is to automate and make it continuous by modifying the lap of the polisher during removal.

EMBODIMENT AND ITS OPERATION Hereinafter, an embodiment of an automatic LIE mechanism for a spherical lens surface in a lens polishing apparatus of the present invention will be described with reference to the drawings.

Figures 1 and 2 show the back of the automatic lens polishing device.
The figure shows the state of the lens 31), the state yE' when the lens is removed, and the polisher is corrected. In the figure, 1 is the slide bed main body, and a slide shaft 3 for vertical movement into which a polishing arm 4 is fitted and a correction arm 21 are fitted into a slide I/base 2 for movement back and forth. A slide shaft 20 for downward movement is installed inside the device so as to face each other in the front and rear. 6 is an air cylinder for moving the polishing arm 4 up and down, and 23 is an air cylinder for moving the correction arm 21 up and down. The polishing arm 4 is attached to the slide shaft 3 via the metal 5.
The modification II near arm 21 is inserted into the slide shaft 20 via the metal 22. 7 is a slide shaft 8 for moving the slide bed main body 1 back and forth.
It is a slide base that is inserted into the holder. This slide l”t
An air cylinder IO is attached to the frame via a base 12. 11 is a rear shaft flange, and 14 is a front shaft flange. ,1
6 is a heald chute attached via the base 12, and belts 17 and 18 are wound around it. 18 is a polishing tank, and when the slide base 7 is retreated to the state shown in FIG.
It is arranged to be in the same position as the lens polishing holder (not shown) provided at the tip of the polishing arm 4.4, and when the slide head 7 moves forward to the state fE in Fig. 2. , the position of the polishing plate correction holder 37 provided at the tip of the correction arm 21.21 is set at 1δ, and the position of each lens polishing holder provided at the tip of the polishing arm 4.4 is Polishing dish 38.38
It's decorated. In this way, the slide bed body l
moves back and forth between the slide shafts 8 by the expansion and contraction action of the air cylinder 10, while the polishing arm 4.4 equipped with a lens polishing holder moves up and down between the slide shafts 3 via the air cylinder 6, correcting the polishing plate. The correction arm 21.21 equipped with the holder 37 moves up and down between the slide shafts 20 via the air cylinder 23. By moving up and down, back and forth,
The lens polishing holder automatically and continuously suctions, conveys, and polishes the lenses supplied to the bell h17.18 on the belt chute 16, and can discharge the lenses after polishing. The correction holder 37 allows the lap to be corrected. In this embodiment, one polishing arm 4 or correction arm 21 is equipped with two lens polishing holders or polishing plate correction holders 37, but one polishing arm 4 or correction arm 21 is equipped with one or more lenses. It is also possible to provide a polishing holder or a polishing dish correction holder 37, and it is also possible to provide several polishing arms 4 or correction arms 21 with one or several lens polishing holders or polishing type correction holders. be. In addition, although the correction arm 21 is internally attached to the slide bed main body l, it can also be moved up and down, back and forth, or left and right by the robot l art etc. fixed to the base 12J.
'SF Noh. Regarding the lens polishing method, the applicant of the present application previously filed an application (Japanese Patent Application No. 141608/1982).
Patent application No. 193029/1982, Patent application No. 15473/1983
This method is the same as the method according to the invention described in No. 0).

FIG. 3 shows the mechanism of the polishing plate correction holder, which is the main part of the present invention, and (a) shows the polishing plate correction 11ν,
(b) shows the state at the time of transfer. The operations and effects will be explained below in conjunction with the operation flowchart shown in FIG. 21 inserts the holder shaft 34 through the metal 30, and connects the other end to the air cylinder 23.
It is a modification arm that is connected to the. The holder shaft 34 has a disk-shaped engagement tool 35 for a correction holder flange 36 fixed at its lower end, and a maintenance A32 for maintaining the holder shaft 34 during transportation of the polishing plate correction holder at its center. Further, at the lower part of -F, there is a rod-shaped protrusion that presses the polishing type correction tool 37 via the holder shaft 34 by the tension force of the spring 31. The corrected holder flange 36 has a V-shaped groove molded in its inner center, and the lower end of the holder shaft 34 is inserted into this groove.

Further, a polishing plate correction holder 37 is screwed to the lower part thereof. Note that the lower surface of the polishing type correction holder 37 is shaped into a reference spherical shape of the lens. With such a structure, the polishing plate is pressed against the polishing plate 38 in the state shown in FIG. On the other hand, when the lap correction is completed, the correction arm 21 is raised, and the polishing tank 1 is in the state shown in (B).
8, it will be transferred up and down, back and forth, or left and right.

Effects of the Invention Since the present invention is constructed as described above, the polisher has the characteristics that it can be operated automatically and continuously without manual intervention, and that lap correction can always be performed under certain conditions. It has specific effects such as.

A. Since all adjustment operations that conventionally relied on human senses are performed automatically and continuously, there is no need for skill in lens polishing operations, and stable work can be performed at all times.

B. There is no need to stop operation for readjustment of equipment, etc.
The operating rate can be dramatically improved.

In addition, the device does not require advanced technology to operate, can be operated easily, and can maintain high reproducibility and stability over a long period of time.

Because the process and equipment itself automatically and continuously adjusts the lens accuracy, no knowledge or skill regarding lenses is required, and uniform and ultra-high accuracy can be achieved with high reproducibility and stability over long periods of time. It is possible to produce lenses.

In addition, this device can be set up in a short time, so it can be installed in a wide variety of small lot lines.

It has a wide range of applications and is extremely practical, including the ability to set up a wide range of automated lines.

However, since this device does not require a robot for transporting lenses, etc., which was used in conventional devices, there is no wasted time and a very high operating rate can be achieved.

F. The device itself is structurally simple and can be made smaller, which improves facility management and safety, and it is highly economical because it can be manufactured at extremely low cost.

As described above, the present invention provides an automatic lens spherical surface correction device in a lens polishing device that has many advantages.

[Brief explanation of drawings]

1 and 2 are partially enlarged mechanical views showing the main parts of the automatic lens spherical correction mechanism in the lens polishing apparatus of the present invention, and Fig. 3 shows the polisher correction holder, which is the main part of the present invention. FIG. 4 is a partially enlarged schematic diagram showing a flowchart 1 regarding the operation of the present invention. l...Slide bed, lk 2...Slide base 3.8, 12...Slide shaft 4...
... Polishing arm 6, lO ... Air cylinder 11.14 ... Shaft flange 17.18.
...Belt 19 ... Polishing tank 21 ... Correction arm 31 ... Spring 34 ... Holder shaft 36 ... Holder flange 37... Correction holder 38... Polisher

Claims (1)

[Scope of Claims] 1. A slide bed body in which a polishing arm having a lens polishing holder at its tip and a correction arm having a polishing plate correction holder at its tip are attached to a slide shaft for vertical movement; and a slide shaft. A mechanism for automatically correcting the spherical surface of a lens in a lens polishing device, which comprises a slide base that can be moved back and forth through a slide base, and a polishing tank equipped with a polishing plate for a lens polishing holder. 2. An automatic lens spherical surface correction mechanism in a lens polishing apparatus according to claim 1, wherein the vertical movement of the slide bed main body and the back and forth movement of the slide base are respectively moved via air cylinders. 3. Claims 1 and 2 consist of a polishing dish correction holder in which a correction arm is attached to a holder shaft, a holder flange is locked to the tip of the holder shaft, and the holder flange is screwed onto the correction holder; 2. An automatic lens spherical correction mechanism in the lens polishing apparatus according to item 2.