JPH0419058A - Spherical lens polishing machine - Google Patents

Abstract

PURPOSE:To enable polishing across the whole face to be polished with pressing force from the vertical direction of this face to be polished by bringing the pressing direction of a polishing spherical member supporting part always in line with the radial direction around the center of a polishing spherical member. CONSTITUTION:In a sliding part reciprocated in a first horizontal direction by driving force from one drive source 6, there is provided a polishing spherical member supporting part 86 oscillated around a second horizontal shaft orthogonal to a first horizontal shaft by the driving force from the drive source, and an expansion pin member 94 is supported by the polishing spherical member supporting part 86. The pressing direction of the polishing spherical member supporting part 86 is always brought in line with the radial direction around the center of a polishing spherical member 90, and the center part and the whole peripheral part of a lens L are polished with pressing force from the vertical direction of these center and whole peripheral parts.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a spherical lens polishing machine, and more specifically, a lens plate to which a lens is attached and a polishing plate that constantly apply a biting pressure force in a perpendicular direction to a polished spherical surface. This article relates to a spherical lens polishing machine.

(Prior Art) A conventional spherical lens polishing machine is called an Oscar type, and is provided with a vertical engagement member, a so-called hairpin member, at the tip of a swinging side of a member swinging in a substantially horizontal plane. On the other hand, the polishing plate or lens plate is placed on the rotating lens plate or polishing plate, and the upper polishing plate or lens plate is swung by the engagement member.

(Problems to be Solved by the Invention) In the conventional Oscar-type polishing machine described above, as shown in FIG. Ru. The hairpin member 106, which swings while maintaining a vertical state, engages with the engagement protrusion 104 of the polishing plate 102. Therefore, a vertical pressing force is always applied to the polishing plate 102 by the pin member 106, and the direction of the pressing force is applied to the lens L attached to the center of the lens plate 100 and the lens L attached to the periphery. One difference: two lens plates 10
There was a problem in that all the lenses L attached to the lens L could not be polished uniformly.

The present invention was made in view of the above-mentioned problems of conventional spherical lens polishing machines, and it polishes all of the plurality of lenses attached to the lens plate with a pressing force from the vertical direction of each lens. It is an object of the present invention to provide a spherical lens polishing machine that polishes all parts of a lens, including its center and periphery, with a pressing force applied in a direction perpendicular to the part.

(Structure of the Invention) The present invention includes one driving source, a sliding part that reciprocates in a first horizontal direction by the driving force from the driving source, and a sliding part that moves reciprocatingly in a first horizontal direction by the driving force from the driving source. The polishing spherical member support part has a polishing spherical member support part that swings around a second horizontal axis perpendicular to the first horizontal axis, and an extendable hairpin member supported by the polishing spherical member support part. This is a spherical lens polishing machine characterized in that the pressing direction always coincides with the radial direction centered on the center of the polishing spherical member.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the spherical lens polishing machine l includes a main body 2, a horizontal guide shaft 4, and a motor 6 whose rotational axis is perpendicular to the main body 2.
and has. A vertical rotating shaft 8 is supported on the scissors of the main body 2.

A pulley 10 is attached to the lower end of the rotation 18, and the pulley 10 is drivingly connected to the motor 6 by a belt 12. An eccentric plate 14 for M-line sliding is attached to the upper end of the rotating shaft 8, and the eccentric plate 14 is provided with a sliding pin 16 whose position can be adjusted.

The eccentric pin 16 is provided in a sliding groove 22 provided on the lower surface of a horizontal sliding plate 20 and extending in a direction perpendicular to the guide shaft 4.
is slidably engaged with.

A first sliding member 24 and a second sliding member 26 that slide on the guide shaft 4 are attached to the lower surface of the sliding plate 2D. Therefore, the sliding plate 20 performs reciprocating motion along the guide shaft 4 as the eccentric plate 140 rotates.

On the rotating shaft 8, the main body 2 and Boo! At the position j= between J-10, the first shade gear 30 is attached: On the other hand, a shaft support member 34 that pivotally supports a horizontal rotation shaft 32 is attached to the main body 2, A second bevel gear 36 that meshes with the first bevel gear 30 is attached to the end of the rotating shaft 32 on the rotating shaft 8 side.

Further, a portion of the rotating shaft 32 opposite to the rotating shaft 8 is aligned with a spline 40, and a pulley 42 pivotally supported by the second sliding member 26 is engaged with the spline 40.

A pedestal 44 extending upward is provided on the sliding plate 20. The vertical part of the pedestal 44 supports a horizontal rotation shaft 46,
A pulley 50 drivingly connected to the pulley 42 by a belt 48 is attached to one end of the rotating shaft 46 .

Note that in order to synchronize each movement, it is preferable to use a timing belt or the like as the belt 48. An eccentric plate 52 is attached to the other end of the rotating shaft 46. An eccentric pin 54 is attached to the eccentric plate 52 so that its attachment position can be adjusted.

The pedestal 44 further includes two horizontal guide shafts 60.
62, and the guide shaft 60.62 has a slider 64.
is slidably supported. The slider 64 has a first vertical sliding groove 66 on the side of the eccentric plate 52 in which the eccentric pin 54 engages.
A second vertical sliding groove 70 is provided on the opposite side to which a swinging pin 68, which will be described later, engages.

A telescopic horizontal rotating shaft 72 is disposed in front of the slider 64 on the second vertical sliding groove 70 side and is supported by the sliding plate 20 . As shown in FIG. 2, the first shaft member 2
00 and the second shaft member 202 are fitted. First shaft member 2
00 is threaded and provided with an elongated hole 208 parallel to the axis of the horizontal rotation shaft 72. On the other hand, the second shaft member 2
02 pivotally supports a screw member 210 that is screwed into the elongated hole 208;
The screw member 210 is provided with a length adjustment handle 212 for rotating it. The second shaft member 202 has
A swing pin support member 76 that supports the swing pin 68 is fitted, and a spline shaft 74 is spline-engaged with the swing pin support member 76, so that the space between the slide plate 20 and the pedestal 440 is completely The horizontal rotation axis 7
A guide ball 220 and a screw mechanism 222 are provided for adjusting the height of 2, and a height adjustment handle 224 is provided above the screw mechanism 222.

A cap gear 80 is attached to the end of the horizontal rotating shaft 72 opposite to the swing pin support member 76.

On the other hand, a head gear 82 which is rotatably supported around a horizontal axis of rotation meshes with the head gear 80, and an air cylinder 86 is attached to the head gear 82.

A polishing surface 90 is provided at the lower end of the drive section 88 of the air cylinder 86.
A hairpin member 94 that engages with the engagement protrusion 92 is attached. The polishing surface 90 is placed on a lens plate 96 to which a plurality of lenses L to be polished are attached.

In the above configuration, the hairpin member 9 can be adjusted by adjusting the length adjustment handle 212 and the height adjustment handle 224.
4 is in place.

When the motor 6 is driven, the eccentric plate 14 rotates in a horizontal plane, and the sliding plate 20 reciprocates in parallel with the guide shaft 4.

At the same time, the rotating shaft 32 and the eccentric plate 52 rotate, and the slider 64 reciprocates along the guide shaft 60.62. As a result, the horizontal rotating shaft 72 reciprocates, and this reciprocating rotation causes the cylinder 86 to swing in the vertical plane via the head gears 80, 82.

In addition, the cylinder 86 expands its operating hole in conjunction with the sliding movement, and the cylinder 86 swings while moving in a horizontal plane.

At the second time, the eccentric pin 16 on the eccentric plate 14 is moved so that the center of swing of the cylinder 86 is at the center of the polishing surface of the polishing surface 90.
and the position of the eccentric bin 54 on the eccentric plate 52 are adjusted in advance. Further, when the position of the eccentric pin 54 on the eccentric plate 52 is aligned with the rotation center of the eccentric plate 52, the cylinder 86 is moved in parallel, making it suitable for polishing a flat surface. Also, depending on the adjustment of the positions of the eccentric bins 16 and 54, concave lens polishing is also possible.

In the above embodiment, the sliding plate 20 and the slider 6 are
Although an eccentric bottle is used for the reciprocating motion in step 4, a cam mechanism may be used instead.

(Effects of the Invention) According to the present invention, the polishing surface or lens tray placed on the upper surface of the polishing surface has the following features as shown in FIG.
Instead of always applying a pressing force toward the center of the polishing surface, it has the advantage that the entire polishing surface can be polished by a pressing force from a direction perpendicular to the surface. Also,
The driving force for performing these operations can be obtained from a single drive source, and the period of the reciprocating movement of the sliding plate O and the rocking movement of the polishing spherical member support can be easily and precisely controlled. .

Furthermore, the radius of curvature of the polished lens can be freely selected simply by adjusting the position of the eccentric bin.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional perspective view of a spherical lens polishing machine according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the drive system of the polishing machine, and FIG. 3 is an explanatory diagram of the pressing force in the polishing machine according to the present invention. , FIG. 4 is an explanatory diagram of the pressing force in a conventional polishing machine. 1... Spherical lens polishing machine 4... Guide shaft 6... Motor 8... Rotating shaft 14...
・Eccentric plate 16... Eccentric bin 20... Sliding plate 32... Rotating shaft 44... Frame
46... Rotating shaft 52... Eccentric plate 54...
... Eccentric bottle 64 ... Slider 72 ... Horizontal rotating shaft 76 ... Swinging bottle support member 86 ... Air cylinder 94 ... Hairpin member cabinet 4 Procedure amendment (method) l. Display of the case 1990 Patent Application No. 19492 2 Name of the invention Spherical lens polishing machine 3 Person who makes corrections Relationship with the case

Claims (5)

[Claims] (1) one driving source, a sliding part that reciprocates in a first horizontal direction by the driving force from the driving source, and the sliding part is orthogonal to the first horizontal axis by the driving force from the driving source; a polishing spherical member supporting part that swings around a second horizontal axis, and an extendable hairpin member supported by the polishing spherical member supporting part, and the pressing direction of the polishing spherical member supporting part is always in the polishing direction. A spherical lens polishing machine characterized in that the radial direction coincides with the center of a spherical member. (2) The spherical lens polishing machine according to (1), wherein the sliding portion is reciprocated by an eccentric pin. (3) The spherical lens polishing machine according to claim 1, wherein the polishing spherical member support section includes a reciprocating device and a shaft member that is reciprocated by the reciprocating device. (4) The spherical lens polishing machine according to claim (1), wherein the sliding portion is reciprocated by a cam mechanism. (5) The spherical lens polishing machine according to claim 1, wherein the polishing spherical member support section is swung by a cam mechanism.