JP2003340702A - Diamond tool plate oscillation rotation-type lens polishing method and its device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a diamond tool plate oscillation rotation-type lens polishing method. <P>SOLUTION: In this lens polishing method for polishing a lens or an optical element while rotating and oscillating a diamond tool plate, the lens or the optical element is held on a holder in vacuum before machining, a table is transferred until it is brought into contact with the diamond tool plate, then a rotatable and reciprocatable bearing is extruded, the transfer of the table is stopped by a detection signal obtained by detecting the extrusion by a proximity switch, and a cutting amount is numerically controlled to determine a thickness of the lens or the optical element. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens polishing method, and more particularly to a lens grinding method and a device for grinding a lens or an optical element while rotating and rocking a diamond tool dish.

[0002]

2. Description of the Related Art A conventional method and apparatus for determining the lens thickness has been developed and disclosed by the applicant of the present invention.
No. 9-93262, the automatic polishing measuring device and JP-A-7-20.
There is a high precision surface creation method of No. 5007. The former automatic polishing measuring device relates to a lens grinder, but particularly to a polishing mechanism for small / medium diameter precision spherical core lenses.It rotates the polishing plate installed in the center of the box and A polishing plate rotating and swinging mechanism (A) in which the whole is swinging like a pendulum, and a polishing holder fixing and pressing mechanism (B) in which a polishing holder is connected to the polishing plate and a holder shaft is pressed through a spring. ), A measuring terminal grounded to a dial gauge with electric contacts is attached to the polishing holder fixing pressurizing mechanism (B), and the measuring terminal is connected to an adjusting bolt through a detection plate. The dial gauge with electric contacts is fixed to the holder shaft via a mounting plate while being fixed to the holder shaft. As shown in FIG. 7, a specific mechanism is attached to a polishing holder fixing pressure mechanism (B) of a conventional device, and 30 is a dial gauge with electric contacts, which is its main body. The dial gauge 30 has its electrical contacts actuated via a lead wire for signal extraction, and is grounded to a measuring terminal 33 attached to the upper portion. That is, the measurement terminal 33
The electric contact in the dial gauge 30 is actuated by the pressing operation of, and a stop signal is issued. Reference numeral 32 is an adjusting knob for electric contacts, which is an adjusting knob for predetermining the polishing measurement value. That is, if the polishing measuring device is set according to the scale of the dial gauge 30 by the adjusting knob 32, the needle moves to the scale adjusted by the pressing operation of the measuring terminal 33,
The stop signal is emitted. Reference numeral 34 denotes an adjusting bolt, which is fixed to the upper portion of the projecting end of the measuring terminal 33 via the detection plate 35. The adjusting bolt 34 is for positioning the polishing measurement value by adjusting the length in contact with the measuring terminal 33, and the detecting plate 35 is a movement with the holder shaft 20 for operating the adjusting bolt 34. It is a veneer for. That is, the adjustment shaft 34 is moved up and down by moving the holder shaft 20 up and down, and the tip of the measuring terminal 33 is further pressed by moving the adjustment bolt 34 up and down. A dial gauge mounting plate 36 is mounted between the measuring terminal 33 and the holder arm 21. This mounting plate 36
The dial gauge 30 is fixed to the holder arm 21, and by this fixing, the holder shaft 20 is fixed.
It is possible to move the detection plate 35 fixed to the up and down.

The latter high-precision surface creation method relates to a method for automatically grinding a work such as a lens with a grindstone, and more specifically to a cutting method. Its purpose is to process a work with high accuracy without causing chipping, chamfering, or deformation. As for a concrete configuration, as shown in FIG.
A ball screw 48 rotated by a servo motor 49 via an arm 47 enables vertical movement, and the servo motor 49 can move and stop the work 42 to an arbitrary position and stop the work 42 and the grindstone 41 according to a command from a sequencer.
Is a method in which the work 42 is automatically cut intermittently into the grindstone 41 to be machined. According to this method, the grindstone is extremely cut into the work and the excessive force is partially concentrated by making the cutting motion intermittent compared to the continuous cutting motion by the pressurizing means such as the cylinder or the spring. In addition, even if the work is pressed against the grindstone and deformed, since it is not always pressed, only the part that comes into contact with the grindstone is gradually scraped by the restoring force of the work itself and machined while deformed. Will not be lost.

Further, as a conventional spherical surface processing apparatus for optical lenses, mirrors, etc., there is JP-A-64-45557 developed and disclosed by the applicant of the present application. This device relates to a spherical surface processing device that performs spherical grinding and polishing of optical lenses, mirrors, etc. In a spherical surface processing device for spherically processing a workpiece by pressing on a core shaft, a reference cam having a curved cam profile is replaceably attached to the side of the polishing dish and the polishing is performed on the curved surface of the reference cam. An optical system characterized in that a movable base for holding the lower shaft of the plate is movably attached, and the lower shaft of the polishing plate is movable in the axial direction so that the spherical axis locus of the lower shaft of the polishing plate is variable. It is in spherical processing equipment such as lenses and mirrors. As shown in FIG. 9, a specific structure is a lens (workpiece) 61 fixedly held by a chuck 62. The chuck 62 is fixed to the lower end of an upper shaft 63, the upper shaft 63 is rotatably supported by an arm base 64 via an upper holder 65, and a boule 66 is fixed to the upper end of the upper shaft 63. The arm base 64 is a motor 67
Is fixed, and the pulley 68 is fixed to the drive shaft of the motor 67. Therefore, the upper shaft 63 is rotated at a low speed by the motor 67 via the belt 69 hung on the pulleys 66, 68. Further, the polishing head 70 has a diamond head 7
1 are attached at regular intervals. The polishing dish 70 is fixed to the upper end of a spindle (lower shaft) 72, and a boule 75 is fixed to the lower end pivotally supported via 74, 74. A motor 77 is fixed to a blanket 76 protruding from the lower holder 73, and a pulley 78 is fixed to the drive shaft of the motor 77. Therefore, the spindle is rotated at a high speed by the motor 77 via the belt 79 wound around the pulleys 75 and 78. The lower holder 73 is held in a rocking body 80 having a bowl-shaped cross section, and the lower holder 73 can be fixed in the rocking body 80 by a set bolt 81 at any position in the axial direction. . The rocking body 80 is fixed to a cylindrical body 82, and cam floors 83 are attached to both axial ends of the cylindrical body 82. The cam floor 83 is movably mounted on the cam 84, and the cam 84 is screwably mounted on the frame body. The oscillating motion of the oscillating body 80 is performed by rotating the pinion 85 forward and backward by a pinion 85 fixed to the lower part of the oscillating body 80 and a rack 86 fixed to the frame body side.

[0005]

In such a conventional method and apparatus, for example, when the material of the lens is a cylindrical cutting material, the position where the cutting is started is far from the position where the cutting is completed, so that the program is changed in advance. It is necessary to teach the cutting start position and the cutting completion position, and when the shaft holding the lens is forcibly rotated, it is affected by the rotational vibration, so the wall thickness varied. .

Further, in a conventional CG machine using a cup type tool, when grinding a work, the angle θ of the rotation axis of the cup type tool with respect to the rotation axis of the work is set to be Sin θ = D / 2 / R, Moreover, there is a problem that the rotation axis of the work must be moved in the Y direction so that the tip of the cup-shaped tool becomes the center of the work and adjustment is made so as to eliminate the belly button, and the value of D at that time is accurately measured. Since it is difficult to do so, when the rotation axis of the workpiece is moved in the Y direction, R also changes subtly, and the operation of correcting the angle of the rotation axis of the cup-type tool must be repeatedly set. Moreover, even if it could be adjusted once, it was necessary to readjust it due to the friction of the cup-shaped tool. If this adjustment is left unattended and the processing is continued, the work in which the navel is generated is supplied to the subsequent process, and processing time is required to solve this, which causes a lot of waste.

[0007]

The present invention was developed in order to solve the above-mentioned problems, and a lens grinding method for grinding a lens or an optical element while rotating and swinging a diamond tool dish. In advance, the lens or optical element before processing was vacuum-held on the holder and the table was fed until it contacted the diamond tool dish, and the bearing capable of rotating and reciprocating was further extruded, and the extruding was detected by the proximity sketch. In the provision of a diamond tool dish swinging and rotating lens grinding method, characterized in that the table feed is stopped by a detection signal, and the thickness of the lens or the optical element is determined by numerically controlling the depth of cut. In the wall thickness measuring method, the table feed is stopped by the detection signal and the current value of the table feed is stored as the machining origin. Provided is a diamond tool dish swinging rotary lens grinding method for inputting a cutting amount from a point to a numerical control device, and further lens grinding for grinding a lens or an optical element while rotating and swinging a diamond tool dish. In the method, the lens or the optical element is numerically controlled by pressing the lens or the optical element against the diamond tool dish, and the table is continuously fed by the control to process the lens or the optical element to be processed, and further, the lens or the optical element is vacuumized in a holder. There is provided a method for grinding a lens tool oscillating and rotating lens of a dial tool plate, characterized in that the lens or the optical element is held and rotated in the same direction as the diamond tool plate forcibly and at the same speed forcibly.

Further, the present invention is a lens grinding apparatus for grinding a lens or an optical element while rotating a diamond tool dish and oscillating a spherical center, wherein a bearing capable of rotating reciprocating motion and a lens or an optical element to be worked on the bearing. A diamond tool dish in which a holder for holding an element is mounted, and the bearing is supported on a table having a linear guide bearing in which the center line of the bearing matches the axis passing through the spherical center of the diamond tool dish and the table having the linear guide bearing. A numerical control motor for pressing the lens or the optical element, and a device for continuously feeding the table by the motor to process the lens or the optical element to be processed, and stopping the table feeding by the detection signal A diamond tool dish swinging rotation comprising a numerical controller for storing and controlling a cutting amount from the origin. There to provide a lens grinding apparatus, a lens grinding apparatus for grinding a lens or optical element while further rotated and the sphere center swinging diamond tools dish,
A linear guide bearing and a linear guide bearing in which a center axis of the bearing is mounted on a bearing capable of rotating and reciprocating and a holder for holding a lens to be processed or an optical element is aligned with an axis passing through a spherical center of a diamond tool plate. From a numerical control motor that supports the bearing on a table having a guide bearing and presses a lens or an optical element against a diamond tool dish, and a device that continuously feeds the table with the motor to process a lens or an optical element to be processed. (EN) A diamond tool dish swinging and rotating type lens grinding device characterized by being configured.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention is a lens grinding method in which a lens or an optical element is ground while a diamond tool dish is rotated and spherically oscillated. The table is fed until it is held and contacted with the diamond tool dish, and the bearing capable of rotating and reciprocating is further pushed out.The pushing out is stopped by the detection signal detected by the proximity sketch, and the depth of cut is set to a numerical value. A diamond tool dish swinging and rotating lens grinding method characterized by controlling the thickness of the lens or the optical element, and stopping the table feed by a detection signal in the thickness measuring method, and A diamond that stores the current value of the table feed as the machining origin and inputs the cutting amount from the origin to the numerical controller. A lens-grinding method of swinging a tool dish, and a lens-grinding method of grinding a lens or an optical element while rotating and swinging a diamond tool dish, in which the lens or the optical element is pressed against the diamond tool dish. Numerically control and continuously feed the table by the control to process the lens or the optical element to be processed, and further hold the lens or the optical element in a holder in a vacuum to rotate the lens or the optical element in a diamond tool dish. Since it is a dial tool dish rocking rotary lens grinding method that is characterized by rotating at the same speed as the rotation direction and forcibly at the same speed, it is possible to solve many problems that existed with the conventional method. It was

Further, the embodiment of the present invention is a lens grinding apparatus for grinding a lens or an optical element while rotating and oscillating a diamond tool dish, the bearing being capable of reciprocating rotation, and the bearing being processed. A holder for holding a lens or an optical element is mounted, and the bearing is supported on a table having a linear guide bearing and a center line of the bearing coincident with an axis passing through a spherical center of a diamond tool dish. A numerical control motor for pressing a lens or an optical element against a diamond tool plate, a device for continuously feeding the table by the motor, and a device for processing a lens or an optical element to be processed, and stopping the table feeding by a detection signal and for feeding the table. A diamond tool comprising a numerical controller for storing a current value and controlling a cutting amount from the origin. Since a lens grinding apparatus of the oscillating rotary, it is thickened wall to the contents by this to set short the value without using a Puroburamu with the conventional numerical control device.

Further, the embodiment of the present invention is a lens grinding device for grinding a lens or an optical element while rotating and oscillating a diamond tool dish, and a bearing capable of rotating and reciprocating and a workpiece to be processed on the bearing. Lens holder or a holder for holding an optical element is mounted, and the bearing is supported on a table having a linear guide bearing whose center axis coincides with the axis passing through the spherical center of the diamond tool dish and a table having the linear guide bearing. A diamond tool dish swing comprising a numerical control motor for pressing a lens or an optical element against the diamond tool dish and a device for continuously feeding the table by the motor to process the lens or the optical element to be processed. Since it is a dynamic rotation type lens grinding device, the number of rotations of the lens shaft generated by the conventional device is slower than that of the diamond tool plate (6 (rpm), there is a difference in peripheral speed between the diamond tool dish and the work, which leads to chipping of the work and the occurrence of a ridge, and the curve of the diamond tool dish cannot be accurately transferred. . Of these, the point that the transfer of the curve cannot be accurately performed can be solved by unevenly wearing the diamond tool dish depending on the swing angle, but the diamond tool dish is significantly worn, which promotes the occurrence of chipping and pitting of the work. Possibility also arises. Further, when a diamond tool dish with less wear is used, it is difficult to unevenly wear the tool dish, so it is difficult to create a spherical surface while unevenly wearing the tool dish. Further, when the diamond tool plate, which has been solved by means of the subordinate rotation, has a high angle, the rotation is deteriorated and the workpiece is unevenly worn, so that there is a problem that one piece is generated.

In order to solve such a problem, the work can be solved by rotating the workpiece at the same speed and forcibly at the same speed as the rotating direction of the diamond tool dish, and according to the device of the present invention, the diamond tool dish is rotated. It is possible to use a low-mesh diamond tool plate with low wear and a high concentration, and the diamond tool plate feeding correction device that is necessary when using a diamond tool plate with significant wear is not required, so the price of the entire device is reduced. Can be lowered.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a method and apparatus for oscillating and rotating a diamond tool dish lens of the present invention.
1 is the diamond tool plate. The diamond tool dish 1 is mounted on the ball center oscillator 13 so that the ball center of the ball center oscillator and the ball center of the diamond tool dish 1 coincide with each other. Four
Is a stroke bearing capable of rotating and reciprocating, and a spindle 15 is inserted therein. A holder 3 for holding the lens 2 to be processed in vacuum is mounted on the spindle 15, and a rotary joint 11 for rotating in vacuum is further provided on the holder 3.
Is stuck. A sensor for detecting the push-out of the spindle 15 is arranged on the side surface of the rotary joint 11, and an air cylinder 12 for pushing the spindle 15 is arranged above the sensor. Reference numeral 7 denotes a support arm for supporting the spindle 15, which is connected to a ball screw unit 8 driven by a niria guide 10 and a servomotor 9 that guide the ball center of the diamond tool dish 1 so that the axis of the spindle 15 passes. In addition, the controller 22 is configured to move up and down. It should be noted that a numerical value is input to the controller 22 just before the start of processing by the input device of the cut amount.

In the present apparatus thus constructed, first, the lens material before processing is vacuum-held on the work holder 3 in advance, and then the supporting arm 7 is lowered until the lens material before processing contacts the diamond tool tray 1. On the other hand, the lens material before processing contacts the diamond tool dish 1 to push the spindle 15 upward, and the proximity switch 16 detects the push-out. By this detection, the proximity switch 16
Is turned on, the lowering of the support arm 7 is stopped, the current value of the support arm 7 is read out inside the controller 22, and the controller 22 stores the machining origin. Then, during operation, move the support arm 7 upward in advance for preparation,
The lens 2 to be processed is held in vacuum on the work holder 3, and then the diamond tool tray 1 and the spindle 15 are rotated and the air cylinder 12 is operated. By this operation, the spindle 15 is pressed and fast-forwarded to the subsequent processing origin, and the supporting arm 7 is once lowered. Then, after changing the moving speed of the support arm 7 to the cutting speed, the feed is ground up to the cutting dimension value, and the subsequent leveling motion is performed to move the support arm 7 upward. By this upward movement, the rotation of the diamond tool tray 1 and the work holder 3 is stopped and the air cylinder 12 is retracted. Then, after that, the vacuum holding of the work holder 3 is released to complete the processing.

Incidentally, FIG. 2 shows a processing example showing cutting material processing and pressing material processing according to the present invention, and FIG. 3 is a test processing diagram showing the test results. FIG. 4 shows another embodiment of the present invention, and specifically shows a CG-less grinding apparatus for optical lenses and optical elements. Also in this embodiment, as shown in FIG. 1, the diamond tool dish 1 is mounted on the ball center moving body 13 so that the ball center of the ball center oscillating body and the ball center of the diamond tool dish 1 coincide with each other. It is configured to rotate by a controlled diamond tool dish rotation motor 14. A work holder 3 is controlled by a work rotation motor inverter 20 and is mounted on a spindle 15 which is rotated by a work rotation motor 6 so that the lens 2 to be processed can be held in vacuum. Further, the diamond tool tray 1 and the work holder 3 are configured to rotate in the same direction at the same speed. Reference numeral 11 is a rotary joint for vacuum, which is fixed to the spindle 15,
Is an air cylinder that can be moved up and down during processing. Further, the spindle 15 is pressed to apply a cutting pressure to the lens 2 to be processed.
Reference numeral 7 denotes a support arm that supports the spindle 15, and is connected to a ball screw unit 8 that is driven by a linear motor 10 that guides the spherical center of the diamond tool dish 1 so that the axis of the spindle 15 passes through and a servomotor 9. It is designed to move up and down by numerical control.

In the present apparatus thus constructed, the support arm 7 is first moved upward in advance for preparation.
After the workpiece lens 2 is vacuum-held on the work holder 3, rotation support is provided to the work rotation motor inverter 20 and the diamond tool dish rotation inverter 21, and the air cylinder 12 is operated to press the spindle. As a result, the diamond tool tray 1 and the work holder 3 rotate in the same direction at the same speed. After that, the diamond tool tray 1 and the lens 2 to be processed are fast-forwarded down to the point of contact. On the other hand, after changing the moving speed of the support arm 7 to the cutting speed, the support arm 7 is fed until the diamond tool dish 1 and the lens 2 to be processed come into contact with each other, and after further contact, the rocking body 13 starts to rock. After the arm 7 is sent to the dimension value, the leveling process is performed. Furthermore, the support arm 7
Is moved upward to stop the rotation of the diamond tool tray 1 and the work holder 3 to pull the air cylinder 12, and thereafter, the vacuum holding of the work holder 3 is released to complete the machining. The cutting speed is set according to the processing conditions of the lens 2 to be processed, but the cutting is not interrupted but continuously fed at a constant speed.

FIG. 5 shows a standard curve generator, and FIG. 6 shows a comparison between the conventional method and the method of the present invention.

[0018]

INDUSTRIAL APPLICABILITY The present invention is a lens grinding method in which a lens or an optical element is ground while a diamond tool dish is rotated and oscillated in a spherical center. The table is fed until it comes into contact with the dish, and a bearing capable of rotating and reciprocating is further pushed out, and the pushing out is stopped by the detection signal detected by the proximity sketch, and the table feed is stopped numerically to control the lens or A diamond tool dish swinging and rotating lens grinding method characterized by determining the thickness of an optical element, and stopping the table feed according to a detection signal in the above-mentioned thickness measurement method and determining the current value of the table feed. Diamond tool tray swing rotation type that stores as the origin of machining and inputs the cutting amount from the origin into the numerical controller A lens grinding method, which is a lens grinding method for grinding a lens or an optical element while rotating and swinging a diamond tool dish, wherein numerical control is performed by pressing the lens or the optical element against the diamond tool dish. Table is continuously fed to process the lens or optical element to be processed, and further the lens or optical element is held in a vacuum in a holder so that the lens or the optical element rotates in the same direction as the diamond tool dish and is forced. A lens grinding method for grinding a lens or an optical element while rotating a diamond tool plate and swinging a ball center. A bearing capable of reciprocating rotation and a holder for holding a lens to be processed or an optical element mounted on the bearing, A linear guide bearing whose center line coincides with an axis passing through the spherical center of the diamond tool dish, and a numerical control motor for supporting the bearing on a table having the linear guide bearing to press the lens or the optical element on the diamond tool dish A device for continuously feeding the table by the motor to process the lens or optical element to be processed, and stopping the table feed by a detection signal and storing the current value of the table feed to control the cutting amount from the origin. And a numerical control device for controlling a diamond tool plate swinging and rotating lens grinding device, and lens grinding for grinding a lens or an optical element while rotating and swinging a diamond tool plate. A device comprising a bearing capable of rotating and reciprocating motion and a holder for holding a lens to be processed or an optical element mounted on the bearing. Numerical control for supporting a bearing on a linear guide bearing whose center axis coincides with the axis passing through the spherical center of the diamond tool dish and a table having the linear guide bearing to press the lens or optical element against the diamond tool dish A diamond tool dish oscillating rotary lens grinding device comprising a motor and a device for continuously feeding the table by the motor to process a lens to be processed or an optical element. And the following many effects that cannot be obtained with the device can be obtained. A. It is possible to prevent the occurrence of chipping and tingling of the work that has been caused by the conventional method, and it is possible to easily set the wall thickness. B. Since the cut amount can be changed greatly, grinding can be performed even from a cylindrical cut material. C. According to the present invention, since the dimensional numerical value can be changed immediately before the start of processing, continuous processing can be performed without changing the program originally required for the NC device, which is particularly suitable for an automatic processing device. Is. Further, according to the present invention, since the curve of the diamond tool dish can be accurately transferred, it is possible to easily create a spherical surface, and it is possible to stabilize it for a long time by using a low mesh and highly concentrated diamond tool dish. It is possible to perform the above-mentioned grinding processing, and it is particularly suitable for the processing of a deep R work.

[Brief description of drawings]

FIG. 1 is an explanatory schematic diagram showing a method and apparatus for swinging and rotating a diamond tool dish lens of the present invention.

FIG. 2 is an explanatory view showing a processing example of a cut material and a pressed material according to the method of the present invention.

FIG. 3 is a test processing diagram showing a test result of the method of the present invention.

FIG. 4 is an explanatory schematic diagram showing a CG-less grinding apparatus that is another embodiment of the present invention.

5 is an explanatory view showing a standard curve generator of the embodiment shown in FIG. 4. FIG.

FIG. 6 is an explanatory diagram comparing the method of the present invention with a conventional method.

FIG. 7 is an explanatory schematic diagram showing a conventional automatic polishing measuring device.

FIG. 8 is an explanatory schematic diagram showing an apparatus of a conventional high precision surface creation method.

FIG. 9 is an explanatory schematic view showing a conventional spherical surface processing device such as an optical lens and a mirror.

[Explanation of symbols]

1 Diamond Tool Plate 2 Work Lens 3 Work Holder 4 Stroke Bearing 5 Work Axis 6 Work Rotation Motor 7 Support Arm 8 Pole Screw Unit 9 Servo Motor 10 Linear Guide 11 Rotary Joint 12 Air Cylinder 13 Oscillator 14 Diamond Tool Rotation Motor 20 Work Rotary Motor Inverter 21 Diamond Tool Plate Rotation Inverter 22 Controller 23 Digital Switch A Work B Cup Type Tool C Collet Chuck

Claims (5)

[Claims] 1. In a lens grinding method for grinding a lens or an optical element while rotating and swinging a diamond tool dish, the lens or the optical element before processing is held in vacuum in a holder in advance and brought into contact with the diamond tool dish. The table is fed, and further a bearing capable of rotating and reciprocating is pushed out, and the pushing out is stopped by the detection signal detected by the proximity sketch, and the table feed is stopped, and the cutting amount is numerically controlled so that the lens or the optical element A diamond tool dish oscillating rotary lens grinding method characterized by determining the wall thickness. 2. The wall thickness measuring method according to the preceding paragraph, wherein the table feed is stopped by a detection signal, the current value of the table feed is stored as a machining origin, and the depth of cut from the origin is input to a numerical controller. Item 1. A diamond tool dish oscillating rotary lens grinding method according to Item 1. 3. A lens grinding method for grinding a lens or an optical element while rotating and swinging a diamond tool dish, and numerically controlling by pressing the lens or the optical element against the diamond tool dish, and the table is controlled by the control. To continuously process the lens or optical element to be processed,
Further, the lens or the optical element is vacuum-held in a holder so that the rotational direction of the lens or the optical element is the same as the rotational direction of the diamond tool tray and is forced to rotate at the same speed. Lens grinding method. 4. A lens grinding apparatus for grinding a lens or an optical element while rotating and oscillating a diamond tool dish, wherein a bearing capable of reciprocating rotation and a lens or an optical element to be processed are mounted on the bearing. A linear guide bearing in which a center line of the bearing is fitted with a holder for holding is aligned with an axis passing through the spherical center of the diamond tool dish, and the bearing is supported on a table having the linear guide bearing to support the diamond tool dish. Numerical control motor for pressing a lens or an optical element, a device for continuously feeding the table by the motor to process a lens or an optical element to be processed, and stopping the table feeding by a detection signal and present value of the table feeding And a numerical controller for controlling the cutting amount from the origin by storing Lens grinding device. 5. A lens grinding apparatus for grinding a lens or an optical element while rotating and oscillating a diamond tool dish, wherein a bearing capable of reciprocating rotation and a lens or an optical element to be processed are provided on the bearing. A linear guide bearing in which a central axis of the bearing is fitted with a holder for holding is aligned with an axis passing through the spherical center of the diamond tool dish, and the bearing is supported on a table having the linear guide bearing to support the diamond tool dish. A diamond tool dish swinging rotary type comprising a numerical control motor for pressing a lens or an optical element, and a device for continuously feeding the table by the motor to process the lens or the optical element to be processed. Lens grinding machine.