JPS6080551A - Spherical creative machine supplied with rod-shaped glass material - Google Patents

Abstract

PURPOSE:To enhance efficiency of processing a lens by holding a rod-shaped glass material through a chuck on a rotating work shank, creating a spherical surface at the tip of this glass material using a grinding tool, and thereafter cutting into specific strengths. CONSTITUTION:A lens material 13 is set in a collet chuck 14 in a work shank 10, and a cylinder 27 is fitted on a support table. A grinder element 31 for cutting of the work is advanced to a position intersecting with the axis of work shank 10, and a diamond tool 4 is rotated at a high speed while the work shank 10 at a low speed. Piston shaft 29 is slid, and the material 13 is pushed out until the unprocessed end-face of glass material 13a comes in contact with the grinding wheel 31, and then the chuck 14 is closed to allow rotation of the material 13 as in a single piece with the work shank 10. When said unprocessed end- face 13a approaches the tool 4, fine depth feed shall create a spherical surface at the tip of the material 13, and when it is completed a work shank table 7 is retracted to allow advance of the rotating grinding wheel 31, so as to cut the material 31 slowly. Thus creation of spherical surface can be made without mounting and demounting the lens blank at each time otherwise required.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a spherical surface generating machine for grinding and forming the spherical surface of a lens, and particularly to a spherical surface generating machine that can continuously form a spherical lens surface from a rod-shaped glass material. It is something that is fru.

[Background of the invention]

In recent years, instead of the rough sanding work in which the spherical surface of the lens is manually formed using a rough sanding plate and abrasive sand, a spherical surface creating machine, generally known as a curve generator, has been widely used in recent years. There is.

This spherical surface generator generates the spherical surface of the lens on the tip surface of a cylindrical diamond tool, which not only greatly shortens the grinding time but also reduces the compatibility of the polished surfaces. Since the surface is finer and has higher surface accuracy than conventional rough sanding, the time required for sanding or polishing in the next process can be shortened, making it extremely effective for mass production of lenses.

By the way, in order to create a 7-spherical surface by grinding with this spherical surface creating machine, conventionally, the work shaft is stopped each time, and lens blanks (lens materials) are attached to the work shaft one by one to the opened can to be created. After that, the work shaft is rotated again to create a spherical surface.Furthermore, the lens blanks supplied to this spherical surface creation machine are usually press-machined into a spherical surface that approximates the finished surface shape. In addition, in the case of small-diameter lenses for which it is difficult to make lens blanks due to the 11-step process,
Conventionally, rod-shaped glass materials were cut to the appropriate thickness, or
Alternatively, a sheet of glass material was cut into squares and then rolled into a circle to be used as a blank lens blank. Therefore, in any case, it takes time and effort to manufacture the lens blank, and the S
The work shaft must be stopped every time to attach the lens blank to the work shaft, and the work of attaching and removing the lens blank requires a considerable amount of time that cannot be ignored compared to the time required to actually create a spherical surface. It took time.

[Purpose of the invention] The present invention solves the drawbacks of the conventional spherical surface generating machine described above, and can continuously generate one spherical surface of a lens without attaching or removing a lens blank each time. [Summary of the invention]

In order to achieve the above object, the present invention provides a +chi for holding a rod-shaped glass material to be inserted inside.

Yak means? The glass material 2 is rotatably rotated through the chuck means ("f';), the glass material feeding means for pushing out the glass material 2 from the kechak means, and the tip of the glass material has a spherical surface. The grinding tool that creates the rotating sole shaft unit,
A cutting means for cutting the glass material is provided, and the tip of the glass material having a spherical surface created by a grinding tool is cut to a predetermined length by the cutting means. It is something that is fru.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a diagonal "FJi+" diagram showing one commercial example of the present invention, and FIG. 2 is a longitudinal sectional view of the workpiece shaft part from which the tool shaft part has been removed in the embodiment of FIG. 1. In Fig. 1, a base 1 placed on a table (not shown) and rotatable around an eye fixing axis IA is provided with a dovetail groove 1]3.
A tool spindle 2 is guided by its dovetail groove IB and is mounted so as to be slidable left and right in FIG. A cylindrical diamond tool 4 is provided at one end of the tool shaft 3 rotatably supported by the tool shaft stock 2, and a gooley 5 is fixedly provided at the other end. That Ghoulie 5 is V-belt 6
The tool shaft is rotated at high speed by a tool shaft drive motor (not shown). By the way, is the base 1, tool spindle 2, and tool spindle 3 a tool axis unit? However, since the internal structure of the tool spindle 2 is similar to that of a normal spherical surface generator, detailed drawings and explanations thereof will be omitted.

The workpiece spindle 7 facing the tool spindle 2 is a movable table plate 8.
This 8-effect table &8 is a V-shaped table 9 installed on one of two sliding tables 9 fixed on a table (not shown). #? 9A, and is provided so as to be slidable in the axial direction of the work shaft 10, which will be described in detail later. Also,
The moving table plate 8 is driven by a servo motor 12 for rotating the workpiece stream 1, as shown in FIG. 2, for rotating 11 feed screws.

In FIG. 2, a collet chuck 14 for chucking a round bar-shaped glass material 13 is connected to a cylindrical work shaft 1.
A chuck opening/closing member 15 attached to the inside of the tip of the collet chuck 14 for opening and closing the collet chuck 14 is inside the air cylinder 16. A through hole 7A is provided at the center of the piston 17 so that the sliding piston 17 presses the chuck in the closing direction through 18 thrust bearings. In addition, air is supplied into the air cylinder 16 from a condenser (not shown) through a flexible tube 19. Gaskets 20A and 20B are provided between the piston 17 and the piston 17 to maintain airtightness.

In addition, the chuck opening/closing member 15 is urged by a compression spring 21 in a direction opposite to the direction in which the piston 17 is suppressed, and when the air in the air cylinder 16 is released, the chuck is The air cylinder 16 is fixed on the movable table 8 via the support table 22.The collet chuck 14, the chuck opening/closing member 15, the cylinder 7 cylinder 16,
The piston 17, thrust bearing 18 and compression spring 21 constitute a pneumatic chuck. Further, the work shaft 10 holding the collet chuck 14 is rotatably supported by the work shaft 7 through two radial ball bearings 23, and is fitted with a V4 drive gear that meshes with both wheels 24 fixed at one end. 25 and χ, the work shaft rotation motor 2 is fixedly installed on the work shaft stand 7H.
Rotationally driven by 6. In addition, workpiece spindle 7, workpiece @10 and ball bearing? 3 constitutes the work axis unit.

On the other hand, on the right side of the support stand 22 that supports 16 cylinders,
A support base 28 that removably supports the cylinder 27 during work extrusion is fixed to the movable base plate 8H. Piston shaft 2 sliding inside the workpiece extrusion cylinder 27
The tip 29a of 9 is in contact with the right end of the glass material 13OT
When air is gradually fed into the cylinder 27 from a co/greaser (not shown) through a flexible tube 30%, the piston/shaft 29 is configured to press and transfer 13 glass materials to the left. .

Also, a grinding wheel 31 for cutting the glass material 13? A cutting wheel motor 32 that rotates is fixedly mounted on a grinding wheel moving table 33) which can slide at an angle iu with respect to the axial direction of the workpiece shaft 10. The workpiece is configured to be perpendicular to o. This grinding stone 4 @ stand 33 is slidably provided on a sliding support stand: 34 via a dovetail groove 33AY, and a cutting servo motor;
5 and the feed screw 36 ((Therefore, as if driven, lIζ
has been completed.

Next, the operation of the embodiment shown in FIG. 41 and FIG. 2, which is configured as described above, will be explained in accordance with the flowchart shown in FIG. 3.

First, move the 7 workpiece spindles, drive the 12 workpiece spindle feed servo motors in the reverse direction to apply force, and move the moving table 8 to the right in Figure 2 -\4 or 41, at the beginning of production. The workpiece spindle 7 is moved back to the right by a distance that is somewhat longer than the thickness of the lens and the width of the cutting wheel 310 plus at least the grinding allowance χ1111 for creating a spherical surface (step 101). Next, step 102) of removing the workpiece extrusion cylinder 27 from the support base 28;
7 A 4 ti (Insert the collet chuck 14 inner lens material 13 (step 103) L, attach the workpiece extrusion cylinder 27 to the support stand (step 1o4)
)do.

Thereafter, the 35 cutting +4i servo motors are driven to move the 33 magnet moving tables to the right in FIG. 1 via the 36 feed screws, and the work cutting grinding wheel 312. Move forward N (step 105) at a position where the + side crosses the center +Iil+# of the workpiece axis 1o to complete machining preparation.

After a while, the tool shaft 3 is rotated through the V-belt 6 (step 106) to form a cylindrical diamond tool 4.
The work shaft 1 is rotated at high speed, and the work shaft rotation motor 26 is driven to rotate the work shaft 1 through the gears 25 and 24.
0 at low speed (step 107). During the 1100 rotations of this workpiece, a crack (not shown) opens.
Air 7 is gradually sent into the cylinder 27 for pushing out the workpiece, and the piston 1 sleeve 29 is moved to the left in FIG. The glass is moved until it comes into contact with the first surface (Step 108). When this glass material 13 comes into contact with the fifth grinding wheel and stops for a while, another not-shown opening opens to send compressed air into the air cylinder 16, and the piston/17χ is shown in Fig. 2. Slide it to the left and connect the chuck opening/closing member 15' via the thrust bearing.
g Press leftward 1-ro. Therefore, the collet chuck 14 is closed (step l09), and the glass material 13 is moved along the workpiece axis l.
Rotates together with the piston 1.
7, the piston 17 does not rotate, and the glass material 13 receives the piston 170] m hole 17. A rotation rotation f
reactor.

Once the glass material 13 has been chucked by the collet chuck 14, the cutting servo motor 5 is reversely rotated to move the cutting I4: l grinding wheel 31 backward to the left in FIG. 1 (step 110). After that, the workpiece shaft feeding servo motor 12 is further driven, and the moving table plate 8Yg2 is slid to the left in the figure via the feed screws 11, and the workpiece shaft table 7 is moved forward (step 111). , glass material 13
The glass material 13i is rapidly forwarded by +'4 until the unprocessed end surface 13a approaches the diamond tool 4, and thereafter, the drive of the workpiece axis feeding servo motor 12 is controlled so that cutting is performed at a very slow speed.

Due to the slow cutting feed, the unprocessed end surface 1.3A of the glass material 13 comes into contact with the cutting edge of the diamond tool 4 which is rotating at a high speed (7 degrees), and forms a spherical surface using a normal spherical surface generator. Similarly, a desired spherical surface is created at the tip of the glass material 13 (step 112). When this spherical surface creation is completed, the contact between the formed spherical surface and the cutting edge of the diamond tool 4 is severed. In order to do this, the servo motor 127 is reversed to move the seven workpiece spindles back by a very small amount (step 113).

Next, the cutting wheel motor 32 is driven to rotate the cutting wheel 31 (step j + 4) L, and the cutting servo motor 35 is driven to move the wheel to the wheel moving table via the feed screw 36. 33 Fragment 1 Move to the right in the figure and advance the cutting grindstone 31x (step 115). Due to the 310 revolutions of the cutting process and the rotation, the glass material I3 rotating at a low speed is gradually cut from the outer periphery (step 116). In this case, at least a grinding allowance for forming a spherical or flat surface is left on the surface opposite to the end surface where the spherical surface is shaped JN.

Immediately after the glass material 13 is cut, the cutting wheel 3
1 stops its forward movement and also stops its rotation.
(Step 117) Do it. Furthermore, the servo motor 12
starts reversing again, and as in step 101, the grinding allowance on both sides is adjusted to the thickness of the lens and the width of the cutting wheel 31. 7 parts are moved backward in rapid forward motion (step 118).No. 1, cock 15, both the thrust bearing 18 and the piston/17 are displaced to the right in Fig. 742 by the biasing force of the compression spring 21. Therefore, the collet chuck 14 is opened (step 119). Slide inside chuck 14!yIJ
Becomes O1 function.

When this collet chuck 14 is opened, step 10
Go back to the glass material extruder 8 in step 8 and remove the lens material 13.
Step 108 to Step 1 until all are processed.
By repeating the steps up to step 19, lens blanks with a highly accurate spherical surface formed on one side are manufactured one after another. ! It will be done. When the lens material 13 is completely processed, the rotation drive of the work shaft rotation motor 26 is stopped, and the work shaft 10 is rotated.
The rotation of the tool shaft 40 is stopped F (step 121), and the machining operation is completed. In addition, when replenishing the glass material 13 in this state, once the preparatory work from step 102 to step 104 is completed, manufacturing of lens blanks can be continued until all of the glass material 13 is processed. .

The cutting wheel 31 used in the embodiments of FIGS. 1 and 2 may be a thin flat plate with diamond powder embedded therein, or the cutting wheel 31 may be a thin flat plate with diamond powder embedded therein; A wide outer circumferential portion 41A and its outer circumferential portion 41A
The glass material 13 is cut by the stepped grindstone 41 consisting of a disk portion 41B protruding from -f (Y, the glass material 13 is cut at the disk portion 31'B, and then the outer circumference of the glass material 13 is ground by the outer circumferential surface 31A). In addition, if 51 double-sided inclined grinding stones are used, which have sloped surfaces on both sides so that the cut surface becomes conical, the glass material 13 can be cut into a predetermined outer diameter. The center part of the material 13 (make sure that the C crank does not fit in - ``Kotokado 4'')
), the cut surface 13B' on the opposite side to the created spherical surface can be made to approximate the desired spherical surface. When creating a spherical surface, not only can the grinding time be shortened, but also the wear of the grinding tool for creating the spherical surface can be reduced.

In the embodiments shown in FIGS. 1 and 2, the cutting feed of the glass material 13 to the left (X direction) in FIG. The cutting feed of the material cutting grinding wheel 31 in the direction perpendicular to the plane of the paper (Y direction) in FIG. 2 is performed by driving the cutting feed servo motor 35. Therefore,
Both the servo motors 12 and 35 are controlled by the drive χ computer, and the glass material 13 and the cutting wheel 31 are
By appropriately controlling the relative movement in the X-Y directions, the cut surface 7 can be ground into an arcuate shape or an aspherical shape. In addition, a sliding wheel supporting the grindstone moving table 33 for cutting is also provided.
The support stand 34 is configured to be able to slide in the Y direction perpendicular to the movement direction (Y direction) of the grindstone moving table 33 by a servo motor different from the cutting feed servo motor 35, and the cutting wheel 3
If the glass material 13 is displaced relative to the glass material 13 in the X-Y direction, the cut surface will be similar to the former. Can be ground and formed into any convex surface (spherical or aspherical).

FIG. 7 is a perspective view of an embodiment in which a second surface spherical surface generating device w for the next process is added to the device of the first embodiment, and FIG.
1 is a 100-sided orientation diagram of the embodiment device shown in FIG.

Note that the same members as those in the embodiment shown in FIG. 1 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In FIG. 7, a table 200 has a glass material 1
3. Tip surface (first surface) 7. First tool spindle for grinding 611 to the spherical surface 2χ Supporting base 1 and glass material 1
3 work shafts 10 (see Figure 2) 7 support 1st work axle 77 slide to slide 9 and grindstone moving table 33 to support 31 cutting wheels
1. A support stand 34 is provided. The distance between the first tool stand 20 base 1 and the sliding stand 9 of the first workpiece spindle 7 is the glass material 13 cut by the cutting wheel 31.
13C of the tip (hereinafter referred to as "lens blank").
The second side (back side)? Grinding forming 1-
The first workpiece spindle 7 and the second workpiece spindle are configured so that their movement directions are perpendicular to each other, and the sliding table 9 In this case, the first workpiece spindle 7 is the first tool spindle 2.
The length of the sliding surface is longer than that of the embodiment shown in FIG.

The 200 tables also include 1 Shi/Zubura/1
2nd tool spindle for grinding the second surface of 3C 2D
27 supporting base 201 and second work shaft unit 2
03 is provided. The configurations of the second tool support 202 and the base 201 are the same as the first tool support 2 and the base 1 in the embodiment shown in FIG. 1, so detailed description thereof will be omitted. The second work axis unit 203 also has a lens blank 1 inside.
It has a chuck mechanism that holds 30 pieces, and its configuration is as follows.
Since it is similar to the work shaft unit of a conventionally known spherical surface generating machine, drawings and detailed explanations of the internal structure will be omitted. It consists of a support member 205 having a parallel dovetail structure 205A, and a base 206 having a dovetail groove 206A perpendicular to the second work shaft 207.

The second work shaft unit 203 is slidably supported by being inserted into the dovetail groove 205A of the support member 205,
The support member 20517r is configured to be movable parallel to the second work shaft 207 by a servo motor 208 and a feed screw 209. Further, the support member 205 is guided by a dovetail groove 206A, and slides on the base 206, and the hydraulic cylinder 2 is moved in a direction perpendicular to the second work piece 207.
The second work shaft 207, which is configured to be moved by the hydraulic pressure of 10, is rotationally driven by a second work shaft rotating shaft 213 connected through gears 111 and 212. 2 work @+207 is the 1st
The second work shaft 207 is configured to rotate at the same rotational speed as the first work 16+110 in the work shaft 7.
3 is pushed out in the direction of arrow Y in FIG. 8 by the hydraulic cylinder 210.
It is configured so that it stops at a position that coincides with the +10 axis.

Next, the operation of the embodiment shown in FIGS. 7 and 8 will be explained. First, the workpiece extrusion cylinder 27 is removed as in the embodiment shown in FIG. is attached to stereotactic unit 1#. After that, the cutting arsenic dragon 31 is moved to the first work shaft 1.
It moves forward to the 0 axis position and stops. Further, the glass material 13 is pushed out by the workpiece pushing cylinder 27 until it comes into contact with the grinding wheel 31, and is held by the collet chuck as in the embodiment shown in FIG. Ru.

Next, when the cutting wheel 31 returns to the position shown in FIG. ) and move to 8.
1 At a position where the tip of the glass material 13 is close to the cylindrical diamond tool 4 provided at the tip of the tool shaft 3,
The cutting feed can be switched to a very slow one-step feed. Glass material 1
After the tip of the glass material 13 comes into contact with the commercially rotating diamond tool 4, when the glass material 13 rotates from 1 to 7 times, a ki
The desired spherical surface is created. When the spherical surface creation is completed,
The first workpiece spindle 7 returns to the foot position as shown in FIG.

When the first workpiece spindle 7 returns to its original position, the support member 205 that supports the second workpiece spindle unit 203 is moved by the hydraulic cylinder 210 in the direction shown in FIG. As shown, the second work shaft 207 is
When the axis of the workpiece spindle 7 coincides with the axis of the first workpiece spindle 10, the support member 205 stops. At that time, a glass blank chuck (not shown) provided at the tip of the second work shaft 27 is an open chuck, and the chuck for the glass blank, which is not shown, is provided at the tip of the second work shaft 27, and the chuck for the glass blank, which is not shown in the drawings, is in the same state as the first work shaft 10. The collet chunk 14 (see FIG. 2) of the first work shaft 10 is opened and the glass material 1 having a spherical surface formed at the tip is rotated at a high speed together with the second work shaft 27.
3 is pushed out to the left in FIG. 8 by the work pushing cylinder 27, and the spherical part is inserted into the chuck of the second work shaft 207. When the spherical part is inserted into the chuck, the chuck closes and rotates together with the glass material 13 at the same speed as the second work shaft 207 and the first work ill+10. Next, a grindstone transfer stand 33 that holds the cutting grindstone motor 32 which rotates the cutting grindstone 31 intermittently,
A servo motor: 35 and a feed screw 36 are used to feed the glass material 13 downward (in the direction of arrow Y' in FIG. disconnected.

When the glass material 13 is cut, the second work shaft unit 203 cuts the lens blank 13, which has a spherical surface on one side.
While keeping the zero check, it is pulled by the hydraulic cylinder 210 and moves downward in Figure @8, returning to the initial position lif. Due to the rotation of the returned second warp 208 and the feed screw 209, the eagle 8 slides to the right (in the direction of the arrow X) in the figure. The movement =b in the X direction of the second work shaft unit 203 is caused by the cylindrical ring 2 diamond tool 202B provided at the tip of the second tool shaft 202A (see FIG. 8) of the second tool shaft stock 202. It is done in fast forward until it gets close. Thereafter, the second work shaft unit 203 is fed at a very slow speed, and a spherical surface is created on the second surface (back surface) of the lens blur BC. When the grinding of the second surface is completed, the second work shaft unit 203 returns to the original position shown in the 81st zo 1,
First, a 1/2-inch blank having spherical surfaces on both sides is taken out by a transporting means such as a transporting loader (not shown) and turned into a stone.

As shown in the following, if the second surface grinding device is turned on, the other surface will be machined, and the first surface will be machined.
While machining 7]1 with the first diamond tool 4 of the tool shaft 3, the other second surface w second tool 4QII20
It is now possible to process with the second diamond tool 202B of 2A, and both sides of the I men's blank can be processed. In this case as well, the grinding wheel 4 having the shape as shown in FIGS. 4 to 6 is used as the cutting grindstone shaft.
1.51.

If 61χ is used, the grinding efficiency will not be the same as that of Ho 5.

FIG. 9 is a perspective view showing a state in which a rounding device t for grinding the outer diameter of the glass material to a desired value is added to the embodiment of FIG. 1, and FIG. 10 is a perspective view of the embodiment of FIG. 9 is a perspective view of the ship seen from the opposite direction. The same members as the 11th bacterium are given the same reference numerals, and detailed explanations of their structures will be omitted.

In FIG. 9, a first guide dovetail portion 301A extending in the same axial direction as the work shaft 10 is provided at the end of the workpiece+it+table 7.
A rounding device with a pace 301 car is fixed. The support base 302, which is slidably supported by the guide 711 portion 301A of the rounding device pace 301, is configured to be driven by a feed servo motor 304 via a feed screw 303.

The support stand 302 slidably supports a motor stand 306 on which a rounding grindstone motor 305 is fixed, and a second guide dovetail 302A that extends universally orthogonally to the first guide dovetail 301A. It has been set up. Seven motor stand 30
6 is configured to be driven by a cutting servo motor 307 provided on the support base 302 via a grinding screw 308. A force/knob grindstone 309 as shown in FIG. 11 may be detachably attached.

Feed servo motor 304 and cutting (nanasu motor 3)
07 is configured to be automatically controlled by a control circuit 310 that controls the workpiece axis feeding servo motor 12 and the cutting servo motor 35.
0, the cutting surf 1 (motor: 307 moves the motor table 306 downward by a predetermined amount, and then the feeding servo motor 304 controls the motor table 306 to move a predetermined distance 1-6 to the right in FIG. 9. Glass material 13σ) 1
1. (+1/: so that the control motor 5 is switched to the drive side after the end of '5 k).

has been completed.

Next, operation 1 of the rounding device described in h (confession 1 and explanation 2) 0
First, the feeding servo motor 304 is rotated to move the motor stand 306 forward to the right in FIG. 9 until the lower right end of the cup grindstone 309 approaches the left edge of the glass material 13. After that, the cutting servo motor rotated 307 times,
The motor is driven to move the motor stand 306 downward to a position where the outer diameter of the glass material 13 is ground to a predetermined value. Next, reverse the feeding servo motor 304i, and
6 and the outer periphery of the glass material 13, the rounding cup rotates at high speed together with the rounding whetstone motor 305. Grinding is performed by a predetermined length e using the lower edge of the grindstone 305. When this outer circle grinding is completed, the cutting servo motor 307 is rotated in the reverse direction and the cup grindstone 3 is rotated together with the motor stand 306.
09Y,,h Raise it and return it to its original position.

During the above rounding operation, the cup grindstone 309 rotates at high speed. The glass material 13 rotates at a speed of 1.5 degrees, but the collet chuck 1 must be fixed so that it does not move back and forth during the rounding process.
4 (see Fig. 2), and the control circuit 310 prevents the cutting feed motor 12 from rotating on the open side 1.
Be it. Furthermore, during the rounding operation, the feeding servo motor 304 and the cutting servo motor 307 are controlled by the control circuit 310. After that, the cutting servo motor 35 is drive-controlled by the cutting 1 circuit 310. The cutting wheel 31 moves forward and cuts 13% of the glass material having a spherical surface 41 on its end surface to a predetermined length.

As shown above (with the embodiment shown in Fig. 1 and the ninth robe shown in Fig. 9)
J] If we do this, we can create spherical surfaces from the same glass material even if the lenses have different outer diameters! /You can get blanks. Note that this rounding device may be provided not only on the upper part of the workpiece spindle 7 as shown in FIG. 9, but also on the side surface or the like.

In addition, in the embodiments shown in FIG. 2 and FIG. Opening/closing and extruding glass material 13? It may be configured to do so. Furthermore, although the embodiment of FIG. 2 shows that the rotation of the work shaft IO is performed by interlocking gears,
Instead of the gears 24 and 25, a V-belt or a T-belt may be used to transmit power. In addition, the sliding guide mechanism between the four-motion table plate 8 supporting the workpiece spindle 7 and the sliding table 9 is configured in a narrow guide method using the V-shaped groove 9A, but it is also possible to use a rectangular groove type, etc. There is no problem even if it is something like that.

[Effects of the Invention] As described above, according to the present invention, when performing spherical filtration, an operator can attach lens blanks one by one to the work shaft, or one by one in a blank supply field. There is no need to feed the workpiece to the shaft, which has the advantage of shortening work time and reducing equipment costs. Furthermore, a glass material made by continuous melting 'f;/
Since it is possible to create a spherical surface by supplying it as a rod, it can be made by press molding, and the material cost is lower than that of a blank. Can be reduced significantly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
Fig. 1 is a sectional view of the workpiece axle with the tool axle rest removed, and Fig. 3 is a cross-sectional view of the workpiece axle with the tool axle rest removed. Flowchart showing, No. 4
Figures 5 and 6 are explanatory diagrams of cutting glass materials using different cutting wheels (1 to 1), and Figure 7 is
A perspective view of an embodiment in which a second surface processing spherical surface generating device Kaoru is added to the embodiment of the present invention, FIG. 8 is a plan view showing the arrangement of each part of the embodiment of FIG. 7, and FIG. 10 is a perspective view of an embodiment in which a rounding device is added to the workpiece spindle of the embodiment, and FIG. 10 is a perspective view of the rounding device in FIG.
FIG. 1 is a sectional view of the force/knob granite part showing the outer circumferential grinding trajectory of the glass material by the rounding device surface of FIG. 9. [Explanation of symbols of main parts 1 4...Grinding tool, 13...Glass material, Patent applicant: Takao Watanabe, agent of Nippon Kogaku Kogyo Co., Ltd./Fig. l-3"; Fig. +-8

Claims (1)

[Scope of Claims] 1. A work shaft unit having a chuck means for grasping a rod-shaped glass material inserted therein, and rotating the glass material through the chuck means; a tool shaft unit for rotating a grinding tool for creating a spherical surface on the tip of the glass material; a cutting means for cutting the glass material; A rod-shaped glass material supply type spherical surface generating machine characterized in that the tip of the glass material having a spherical surface 7 can be cut into a predetermined length by the cutting means. 2. The cutting means includes an arc-shaped grinding wheel (31) for cutting the glass material (13), and a stepped grinding wheel (4) capable of grinding the outer periphery of the glass material (13) at the same time as cutting.
1), a double-sided inclined grinding wheel (51)-j capable of forming the cut surface of the glass material (13) into a conical shape; or an arc-shaped grinding wheel (51)-j capable of forming the cut surface of the glass material (13) into a curved surface; 6
1) A rod-shaped glass material supply type spherical stiffening machine according to claim 1, characterized in that it is configured as Y 7K j /8). 3. The cutting means: Due to the relative displacement in the X-Y direction between the cutting grinding wheel (31) and the glass material (13) held by the chuck means (14, 15), the cut surface of the glass moon (13) is It is characterized by being configured so that it can be formed into a curved surface.
A rod-shaped glass material supply type spherical surface generating machine as described in Section 1. 4. The work shaft unit (7, 10, 23) is a two-sided spherical surface generator provided to hold the lens blank cut by the grinding wheel (31, 41, '51.61) of the cutting means. The patent claim is characterized in that the lens blank is provided so as to be movable perpendicularly to each other with the work axis unit (203) of the apparatus, and that the back surface of the lens blank is subsequently formed into a spherical surface by another grinding tool. 5. The cutting means includes the glass material feeding means (27,
The glass material (13) Y is extruded from the chuck means (14, 15) by the grinding tool (4), and the rounding means (1) is created by creating a spherical surface by the grinding tool (4).
301 to 309), the rod-shaped glass material supply type spherical surface generating machine according to claim 1, is configured to cut the rod-shaped glass material after grinding and forming to a predetermined diameter.