JP2004314288A - Component working method and holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of working a component which highly accurately aligns an optical axis (or an axis corresponding to the optical axis) with an outer diameter axis, and a holder used in the method. <P>SOLUTION: During a previous step of forming a shape of the component L, a probe 51 of a pick tester 5 is brought into contact with the outer periphery of a held surface L1 of the component L while rotating the holder 2, and a wobble which is a tilt of the surface L1 of the component L with respect to the holder 2 is detected. If a value (surface runout) indicated by the pick tester 5 is at a predetermined value or larger, heat is indirectly transferred to a holding medium 25 while applying heat to the component L to give fluidity to the medium 25. Then, a position of installing the component L is adjusted until the value comes in specifications while rotating the component L. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a component processing method and a holder.

In the industrial field, examples of components having an optical axis include a camera lens, a telescope lens, a microscope lens, a condenser lens for a stepper, a projection lens, and a spectacle lens. Examples of a component having an axis corresponding to the optical axis include a glass mold used when casting and polymerizing a spectacle lens.
Among these parts, a conventional technique will be described by taking a camera lens and a projection lens using a glass lens having a spherical or aspherical shape as typical examples.
Conventionally, for such a component, the center axis of a holder for mounting the component on a processing device (manufacturing device) is aligned with the rotation axis for rotating the holder of the processing device. It is manufactured by fixing parts using a mirror and finishing the work surface to a mirror surface.
As a method for fixing the component to the holder, a method disclosed in Patent Document 1 can be exemplified. In this method, as shown in FIG. 7 (A), the component L is held by using an adhesive 101 such as a hot melt or a pitch in a center gap with the edge of the component L in contact with the holder 100. Then, the outer periphery of the component L and the holder 100 are sandwiched by the centering jig 102 to fix the component L at a predetermined position of the holder 100. Thereby, the component L is attached to the predetermined position of the holder 100, so that the center of the optical axis of the component L coincides with the outer diameter axis.
Further, as in Patent Document 2 shown in FIG. 7B, a method of fixing the holder L and the component L having substantially the same shape as the held surface L1 of the component L using the adhesive 101 is also used. ing.
As a method of creating a shape and a polishing method of a part fixed to a holder, a part is roughly cut using a processing apparatus generally known as a curve generator, and the surface of the roughly cut part is polished with a polishing plate. In combination with sand, the shape is adjusted while repeating the steps of roughing, sanding, etc., and mirror finishing is performed while polishing using cerium oxide or the like in the same manner. Further, in recent years, a method of performing mirror finishing using a polisher having a configuration in which a polishing member is attached to a polishing plate made of an elastic body as shown in Patent Document 3 has been partially implemented.

JP 2001-252839 A JP 2002-187056 A JP-A-8-206952

  However, in the component manufacturing method shown in the prior art, in a state where the edge of the component L is in contact with the holder 100, the component L is inserted into the center gap by using an adhesive 101 such as hot melt or pitch. In the method of fixing to the holder 100, the excess adhesive 101 invades between the edge of the component L and the contact portion of the holder 100, and the component L is lifted up with respect to the held surface of the holder 100. As a result, there is a problem that the shape creation processing and the polishing processing are performed in a state where the part L is tilted, and the center of the optical axis of the part L is shifted from the outer diameter axis. Also, in the method of fixing the holder L and the component L having substantially the same shape as the held surface of the component L using the adhesive 101, it is difficult to form a uniform layer of the adhesive 101, Similarly, the part L is lifted.

  The present invention has been made in view of the above circumstances, and is used for a method of processing a component capable of aligning an optical axis (or an axis corresponding to the optical axis) with an outer diameter axis with high accuracy, and is used in this processing method. It is an object of the present invention to provide a holding tool.

The present inventor has conducted intensive studies to achieve the above object, and as a result, has found that the following method is effective.
The present invention relates to a manufacturing method in which a work axis that rotates about an optical axis of a component fixed to a holder or an axis corresponding to the optical axis and a processing tool that is arranged in a rotation axis length direction of the work axis are relatively moved. A component processing method for processing a component having an optical axis or an axis corresponding to an optical axis by using a device, a component fixing step of fixing the component to the holder using a holding medium, and the holder Measuring the surface runout which is the inclination of the held surface of the component with respect to the surface runout detecting step, and, when the surface runout exceeds a predetermined value, adjusting the mounting position of the component with respect to the holding tool; And a shape creating step of creating a desired shape on the surface to be processed.
Here, examples of the component having an optical axis include optical components such as a camera lens, a telescope lens, a microscope lens, a condenser lens for a stepper, a projection lens, and a spectacle lens. Further, as a component having an axis corresponding to the optical axis, for example, a mold for manufacturing a plastic lens can be exemplified.

  According to such an aspect of the invention, in a stage preceding the shape creation step, a surface runout detecting step of detecting a surface runout that is an inclination of the held surface of the component with respect to the holder, and when the surface runout exceeds a predetermined value, Since the swinging step of adjusting the mounting position of the component with respect to the holder is performed, the shape is not created while the component is tilted and fixed to the holder. This prevents deviation of the optical axis (or the axis corresponding to the optical axis) of the component from the outer diameter axis, and matches the optical axis (or the axis corresponding to the optical axis) with the outer diameter axis with high accuracy. be able to.

Further, in the present invention, it is preferable to have a polishing step of polishing the surface to be processed created by the shape creating step.
By performing the polishing step, the surface to be processed of the component can be polished to, for example, a mirror surface, and a component having excellent optical characteristics can be manufactured.

Further, in the present invention, it is preferable to include a centering step of cutting an outer peripheral portion of the component so that an outer diameter axis of the component matches an optical axis or an axis corresponding to the optical axis.
In the present invention, since the outer diameter axis of the part and the optical axis (or the axis corresponding to the optical axis) are made coincident with each other by shaving the outer peripheral part of the part after the shape is created, the conventional method is used. In addition, a centering jig that sandwiches the outer periphery of the component and the holder is not required, and the number of members used for manufacturing the component can be reduced.

Further, in the present invention, the holder is provided with a measuring section having a circular cross section in a direction perpendicular to the axial direction of the work axis, and a contact section provided on the measuring section and in contact with a held surface of the component. And a filling gap portion that opens toward the contact surface of the contact portion with the component and has a filling gap portion that fills the holding medium, and includes a holder processing step of processing the holder. The holding tool processing step includes a measuring part processing step of forming the measuring part, a contact part processing step of forming the contact part, and a filling gap part forming step of forming the filling gap part. Is preferred.
In the present invention as described above, since the holding tool processing step of processing the holding tool is provided, it is possible to process the optimum holding tool corresponding to each component.
In addition, since the measuring part of the holder has a circular cross section, the work shaft to which the holder is attached is driven to rotate, and the measuring element of the length measuring device is brought into contact with the measuring part, so that the value indicated by the measuring device is obtained. By detecting the displacement, it is possible to determine whether or not the center axis of the measurement unit of the holder and the rotation axis of the work axis match, and it is possible to accurately attach the holder to the work axis. it can.
Further, the holder has a mounting part on which the measuring unit is erected and is mounted on the work shaft, and the holder processing step includes a mounting part processing step of processing the mounting part. You may.
Since the mounting portion is formed by performing the mounting portion processing step of processing the mounting portion, the holder can be easily attached to the work axis.

Further, in the contact part processing step, it is preferable to form a contact surface having substantially the same shape as the held surface of the component.
According to this aspect of the invention, by forming the contact surface of the contact portion of the holder with substantially the same shape as the held surface of the component, the component can be easily attached to the holder. Further, when the contact surface of the contact portion has a completely different shape from the held surface of the component, the component is easily inclined with respect to the holder, but in the present invention, the shape of the contact surface of the contact portion is different. Is substantially the same shape as the surface to be held of the component, so that the component can be easily fixed to the holder without tilting.

Furthermore, in the present invention, the holding tool is configured such that a contact portion that contacts the held surface of the component, and an opening that opens toward a contact surface of the contact portion with the component, and the filling that fills the holding medium. In the component fixing step, when fixing the component using a holding medium, the volume of the holding medium is set to be less than the volume of the filling gap for filling the holding medium, and the component is used as a holder. It is preferable to fix.
According to the present invention, by holding the component with the volume of the holding medium being less than the volume of the filling gap, the holding medium does not intrude between the component and the contact portion of the holder. It does not rise and tilt due to the holding medium. By creating a shape in such a state, the optical axis of the component (or an axis corresponding to the optical axis) and the outer diameter axis can be surely matched.

Further, in the present invention, the holder is provided with a measuring section having a circular cross section in a direction perpendicular to the axial direction of the work axis, and a contact section provided on the measuring section and in contact with a held surface of the component. In the previous stage of the surface runout detecting step, the holder is attached to a rotating means, a central axis passing through the center of the cross section of the measuring part of the holder, and a rotation axis of the rotating means. A centering adjustment step is performed so that the center axis of the measuring part of the holder is aligned with the rotation axis, and the holder is rotated by the rotating means in a state where the center axis is aligned with the rotation axis. It is preferable to measure an outer peripheral portion of the held surface of the component by using a length measuring device fixed to the above, and detect a deviation amount of a value indicated by the length measuring device.
Here, in the centering adjustment step, the holder is attached to the rotating means, and a measuring element of a length measuring device such as a dial gauge is brought into contact with the measuring portion of the holder. Then, the rotating means is driven to see the value indicated by the length measuring device. If this value deviates greatly, it means that the center of the measuring part of the holder is shifted with respect to the rotation axis, and the mounting position of the holder with respect to the rotation axis is adjusted based on the value.
Then, in the surface runout detecting step, the holder is rotated by the rotating means, and the outer peripheral portion of the held surface of the component is measured by the length measuring instrument fixed at a predetermined position, and the deviation amount of the value indicated by the length measuring instrument is measured. To detect. Here, as the length measuring device, for example, a contact type measuring device such as a dial gauge and a pick tester can be used. Further, a non-contact length measuring device such as a laser length measuring device may be used. As described above, according to the present invention, by using a length measuring device that is widely used, surface runout can be detected, and surface runout can be easily grasped.

Further, in the present invention, it is preferable that the holding medium is made of a thermoplastic medium.
In the present invention, the holding medium is made of a thermoplastic medium, and the mounting position of the part with respect to the holder is adjusted by heating the holding medium in the shake-out step, thereby facilitating the mounting position of the part. Can be adjusted.
In the present invention, it is preferable that the held surface of the component is finished to a desired optical surface in advance.

The holder of the present invention uses a manufacturing apparatus that relatively moves a work axis that rotates about an optical axis of a part or an axis corresponding to the optical axis, and a processing tool that is arranged in a rotation axis length direction of the work axis. When processing a component having an optical axis or an axis corresponding to the optical axis, a holder that holds the component and is attached to the work axis, and a mounting unit that is attached to the work axis; A measuring section that is erected on a mounting section and has a circular cross section in a direction perpendicular to the axial direction of the work axis, and has a contact surface that is provided on the measuring section and that contacts a held surface of the component. It is characterized by comprising a contact portion, and a filling gap portion that is opened on a contact surface of the contact portion with a component and that fills a holding medium.
Further, in the present invention, it is preferable that the contact surface of the contact portion has substantially the same shape as the held surface of the component.
Here, the abutment surface of the abutment portion of the holder is required to be a smooth surface and light weight, and therefore, as a material thereof, aluminum, duralumin, and oxygen-free copper, which are relatively easy to obtain a mirror surface. Or brass, ceramic, resin, etc. are preferable, and the method of forming the holder is, for example, preferably formed by cutting or grinding, and the outer diameter of the abutting portion that abuts on the held surface of the component is determined after the centering process. It is preferable that the diameter is not more than the outer diameter of the component.
Such a holder can be used in the above-described component processing method.
The holding tool as described above can be easily processed using a lathe or the like, and the processing of the holding tool does not require labor.

Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to the following embodiments.
FIG. 1 shows a manufacturing apparatus 1 for carrying out a method for manufacturing a part L according to the present invention.
Here, in this embodiment, the component L is an optical component such as a camera lens, a telescope lens, a microscope lens, a condenser lens for a stepper, a projection lens, and a spectacle lens.

The manufacturing device 1 is a numerical control device, and has a mounting portion 11 for mounting a component L and a processing portion 12 arranged to face the mounting portion 11.
The mounting portion 11 has a work shaft 111 extending in the Z-axis direction in FIG. 1 and work shaft rotating means 112 for driving the work shaft 111 to rotate.

At the tip of the work shaft 111, a chuck 114 to which the component L is attached is attached. The work shaft rotation means 112 is provided with an encoder and a work shaft rotation drive motor 113, and can rotate the chuck 114 mounted on the work shaft by the work shaft rotation drive motor 113. .
Such a mounting portion 11 is installed on a processing table 131 of the X-axis positioning means 13, and an encoder and an X-axis driving motor 132 are mounted on the processing table 131. The X-axis drive motor 132 drives the work shaft 111 in a direction (X-axis direction in FIG. 1) orthogonal to the rotational axis length direction.

The processing unit 12 includes a processing tool 121 installed in the direction of the rotation axis of the workpiece shaft 111 and a processing tool rotating unit 122 that drives the processing tool 121 to rotate.
The processing tool 121 has a processing shaft 121A extending in the Y-axis direction in FIG. 1, and a disk-type grinding wheel 121B attached to a tip of the processing shaft 121A. An encoder and a machining tool rotation drive motor 123 are attached to the machining tool rotation means 122, and the machining shaft 121A can be rotated by the machining tool rotation drive motor 123.
Such a processing unit 12 is installed on a processing table 141 of the Z-axis positioning unit 14, and an encoder and a Z-axis driving motor 142 are attached to the processing table 141. Then, the processing table 141 is driven by the Z-axis drive motor 142 in the work axis rotation axis length direction (Z-axis direction).
The Z-axis positioning unit 14 and the X-axis positioning unit 13 as described above are installed on the base 15.

  In the manufacturing apparatus 1 as described above, the disk-type grinding wheel 121B of the processing tool 121 is driven to rotate by the processing tool rotating means 122, and the three axes of the X-axis positioning means 13, the Z-axis positioning means 14, and the work axis rotating means 112. Is used to position the center coordinates of the processing tool 121 in the normal direction set at the processing point of the part L. Positioning of the center coordinates of the processing tool 121 corresponding to the processing point is continuously performed to create an aspherical surface on the processing surface of the component L.

When such a manufacturing apparatus 1 is used, the component L is attached to the chuck 114 of the manufacturing apparatus 1 via the holder 2. As shown in FIG. 2, the holder 2 includes a disk-shaped mounting portion 21, a measuring portion 22 formed on the mounting portion 21, an abutting portion 23 formed on the measuring portion 22, and a filling gap portion. 24.
The mounting portion 21 is a portion to be attached to the chuck 114, and a surface on the chuck 114 side and a surface (reference surface) opposite to the surface are flat surfaces.
The measuring unit 22 has a cylindrical shape (that is, when the holder 2 is mounted on the work shaft 111 of the manufacturing apparatus 1, the cross section in a direction orthogonal to the work shaft 111 is circular) and is perpendicular to the mounting unit 21. Is provided. The central axis T1 of the measuring section 22 is orthogonal to the plane (reference plane) of the mounting section 21. The diameter of the measuring section 22 is smaller than the diameter of the mounting section 21.

The contact portion 23 is integrally formed on the upper portion of the measuring portion 22 and has an arc-shaped contact surface 231 that contacts the held surface L1 of the component L (see FIG. 4). The held surface L1 of the component L has a spherical shape, and the curvature of the held surface L1 is equal to the curvature of the contact surface 231. The outer diameter of the abutment surface 231 of the abutment portion 23 is preferably equal to or less than the outer diameter of the component L after the centering process described later.
The filling gap portion 24 is a concave portion formed so as to open to the contact portion 23. The filling space 24 is filled with a holding medium 25 (see FIG. 4).
Here, examples of the holding medium 25 include thermoplastic wax and pitch. The volume of the holding medium 25 necessary for holding the component L is such that the holding medium 25 does not penetrate between the component L and the contact portion 23 of the holder 2, that is, less than the volume of the filling gap 24. preferable.

  Since the holding tool 2 as described above is required to have a smooth contact surface 231 and to be lightweight, the holding tool 2 may be made of aluminum, duralumin, oxygen-free copper, And brass, ceramics, resins and the like are preferred. The holder 2 is preferably formed by, for example, cutting or grinding.

FIG. 3 shows a manufacturing apparatus 4 for manufacturing such a holder 2.
The manufacturing apparatus 4 includes a bed 41, a cutting tool 42 installed on the bed 41, and a workpiece holder 43 having a chuck 431 for mounting the raw material of the holder 2.
The cutting tool 42 is arranged in the axial direction of the main shaft (rotating shaft) T2 (see FIG. 4) of the workpiece holding portion 43, and is made of, for example, single crystal diamond. The cutting tool 42 is fixed on a tool rest 421, and the tool rest 421 is fixed to an X-axis table 422. The X-axis table 422 is driven in the X-axis direction by a motor 423.

The workpiece holding unit 43 includes a chuck 431, a rotating unit 432 that rotates the chuck 431, and a motor 433 that drives the rotating unit 432. The chuck 431 is a vacuum chuck.
The motor 433, the chuck 431, and the rotating unit 432 are installed on a table 44, and the table 44 is driven by a motor 45 in the Y-axis direction.

A method of manufacturing the component L using the manufacturing apparatus 1 and the holder 2 will be described.
First, the holder 2 is processed using the manufacturing apparatus 4 (a holder processing step).
The raw material of the holder 2 made of brass is attached to the chuck 431 of the manufacturing apparatus 4, and the chuck 431 of the manufacturing apparatus 4 is rotated to cut the mounting section 21 and the measuring section 22 (mounting section processing step, measuring section processing). Process).
Subsequently, the contact part 23 is formed on the measuring part 22 (contact part processing step). A spherical surface is machined as the contact surface 231 of the contact portion 23.
Next, the filling gap 24 for filling the holding medium 25 for holding the component L is processed (a filling gap processing step). Thereafter, the rotation of the chuck 431 of the manufacturing apparatus 4 is stopped, and the holder 2 is removed from the chuck 431. Thereby, the holder 2 as shown in FIG. 2 is completed.

Next, as shown in FIG. 4, the component L is temporarily fixed to the holder 2 using wax as the holding medium 25. The filling amount of the holding medium 25 into the filling gap 24 of the holder 2 is smaller than the volume of the filling gap 24. At this time, the held surface L1 of the component L is preferably a mirror surface, but may be a surface state after sanding. At this time, the surface roughness and undulation of the held surface L1 of the component L need to be in a uniform surface state at least within the surface runout standard.
Further, the part L fixed to the holder 2 is mounted on the manufacturing apparatus 4, and the measuring element 51 of the pick tester 5 is brought into contact with a side surface of the measuring part 22 perpendicular to the mounting part 21, and the part L is rotated. The center axis T1 of the measuring section 22 of the holder 2 is aligned with the rotation axis T2 of the workpiece holding section 43 of the manufacturing apparatus 4 (centering adjustment step).
When the central axis T1 of the measuring unit 22 of the holder 2 substantially coincides with the rotation axis T2 of the manufacturing apparatus 4, the measuring unit 22 has a cylindrical shape and is displayed on the display unit 52 of the pick tester 5. There is almost no deviation in the values.
On the other hand, when the center axis T1 of the measuring unit 22 of the holder 2 and the rotation axis T2 of the manufacturing apparatus 4 are largely shifted, the value indicated by the display unit 52 of the pick tester 5 is large and fluctuates. . The mounting position of the holder 2 is adjusted based on the fluctuation amount (deviation amount). Then, the work is repeated until the mounting position of the holder 2 is adjusted and the amount of displacement falls within a predetermined range.

Next, as shown in FIG. 5, while the holder 2 is being rotated, the measuring element 51 of the pick tester 5 is brought into contact with the outer peripheral portion of the held surface L1 of the component L, and the component L is held on the holder 2. The surface runout, which is the inclination of the surface L1, is detected (surface runout detection step).
When the held surface L1 of the component L is not inclined with respect to the holder 2, the value indicated by the display unit 52 of the pick tester 5 is a substantially constant value (that is, there is almost no surface runout).
On the other hand, when the held surface L1 of the component L is inclined with respect to the holder 2, the value indicated by the display unit 52 of the pick tester 5 is greatly shifted.
When the value (surface run-out) indicated by the pick tester 5 is equal to or more than a predetermined value (out-of-plane run-out standard), heat is indirectly transmitted to the holding medium 25 while applying heat to the component L, and the fluidity is transferred to the holding medium 25. And adjust the mounting position of the component L while rotating the component L until the standard is satisfied (a run-out process).

After the deflecting step is completed in this way, the component L is mounted on the manufacturing apparatus 1 while being fixed to the holder 2. Then, in the same manner as in the above-described centering adjustment step, while the component L is rotated while the pick tester 5 is in contact with the measuring unit 22 of the holder 2, the center axis T1 of the measuring unit 22 of the holder 2 is The rotation axis of the work shaft 111 of the manufacturing apparatus 1 is matched (centering adjustment step).
Subsequently, the aspherical shape is ground by using the manufacturing apparatus 1 described above (grinding step (shape creation step)).
After the processing is completed, the part L fixed to the holder 2 is removed from the manufacturing apparatus 1, and then the centering is performed in the same manner as the grinding processing, and the part L is mounted on a polishing machine (not shown) to perform the polishing processing. (Polishing step).
Finally, with the part L fixed to the holder 2, the part L is mounted on the manufacturing apparatus 1 in which the aspherical shape has been created, and the pick tester 5 is brought into contact with the measuring unit 22 of the holder 2. The centering is performed in the same manner as in the centering adjustment step while rotating L.
Then, as shown in FIG. 6, the outer diameter axis of the component L is made to coincide with the optical axis by cutting the outer peripheral portion of the component L by the disk-type grinding wheel 121B of the processing tool 121 of the manufacturing apparatus 1. Perform a centering step (centering step).
Thus, the component L can be obtained.

Therefore, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, when the component L is attached to the holder 2, a surface deflection detection step of detecting a tilt of the held surface L <b> 1 of the component L with respect to the holder 2, and the surface deflection is set to a predetermined value. In the case where the component L is exceeded, the shaking step of adjusting the mounting position of the component L with respect to the holder 2 is performed, so that the shape is not created while the component L is tilted and fixed to the holder 2. Thus, it is possible to prevent a deviation between the center of the optical axis of the component L and the outer diameter axis.

(2) In the present embodiment, the measuring part 22 of the holder 2 has a cylindrical shape, and the holder 2 is rotated by the rotating means 432 of the manufacturing apparatus 4 and fixed at a predetermined position in the surface deflection detection step. The outer peripheral portion of the held surface L1 of the component L is measured by the pick tester 5 which is a length measuring device, and the deviation of the value indicated by the pick tester 5 is detected. By using the general-purpose pick tester 5 that is widely used in this way, the surface runout can be detected, and the surface runout can be easily grasped.
(3) Further, as the holding medium 25 for fixing the component L to the holder 2, a thermoplastic wax, a pitch, or the like is used, and the mounting position of the component L with respect to the holder 2 is adjusted in the swing-out process. At this time, the position of the component L can be easily adjusted only by applying heat to the holding medium 25.

(4) In the present embodiment, the holder 2 is manufactured before the part L is formed, and the contact surface 231 of the contact portion 23 of the holder 2 is substantially the same as the held surface L1 of the component L. Since it is formed in a shape, the component L can be easily attached to the holder 2.
When the contact surface of the contact portion has a completely different shape from the held surface L1 of the component L, the component L is easily inclined with respect to the holder 2, but in the present embodiment, the contact portion 23 is used. Since the shape of the contact surface 231 is substantially the same as the shape of the held surface L1 of the component L, the component L can be easily fixed to the holder 2 without tilting.
As described above, by manufacturing the holder 2 before forming the shape of the component L, it is possible to manufacture the optimum holder 2 corresponding to the component L.
(5) Further, in the present embodiment, the component L is held by setting the volume of the holding medium 25 to be less than the volume of the filling gap portion 24 of the holder 2. Since the component L does not enter between the contact portion 23, the component L does not float up by the holding medium 25. Therefore, by creating a shape in such a state, the optical axis of the component L and the outer diameter axis can be surely matched.

(6) In this embodiment, since the polishing process is performed when the component L is manufactured, the surface to be processed of the component L can be polished to, for example, a mirror surface, and excellent optical characteristics can be obtained. Can be manufactured.
(7) Further, in the present embodiment, after the shape is created, the outer diameter axis of the component L is matched with the optical axis by shaving the outer peripheral portion of the component L. A centering jig that sandwiches the portion and the holder is not required, and the number of members used for manufacturing the component L can be reduced.
Also, after the shape is created, the outer peripheral portion of the component L is shaved, and a centering process for matching the outer diameter axis of the component L with the optical axis is provided, so that the outer diameter axis of the component L and the optical axis can be aligned with high precision. Can be matched.
(8) The holder 2 has a structure including a disk-shaped mounting portion 21 and a columnar measuring portion 22 formed vertically on the mounting portion 21. Since it can be formed only by the manufacturing apparatus 4, no trouble is required for manufacturing the holder 2.
(9) Further, since the holder 2 is formed with a disk-shaped mounting portion 21 having a diameter larger than that of the measurement portion 22 below the measurement portion 22, the holder 2 is easily attached to the chuck 114 or the like. be able to. Thereby, the holder 2 can be made easy to handle.
(10) Since the measuring part 22 of the holder 2 has a cylindrical shape, in the centering adjustment step, the measuring element 51 of the pick tester 5 is brought into contact with the side surface of the measuring part 22 while rotating the holder 2. Looking at the value of the display unit 52 of the pick tester 5, the center axis T1 of the measuring unit 22 of the holder 2 can be matched with, for example, the rotation axis T2 of the workpiece holder 43 of the manufacturing apparatus 4. . As described above, the centering adjustment step can be easily performed by forming the measuring section 22 of the holder 2 into a cylindrical shape.

It should be noted that the present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved.
For example, in the embodiment, an optical component having an optical axis is manufactured as the component L. However, the invention is not limited to this. For example, a component having an axis corresponding to the optical axis, for example, a plastic spectacle lens is manufactured. May be manufactured for the purpose.
Furthermore, in the above-described embodiment, the shape of the held surface L1 of the component L is spherical, but the shape is not limited to this, and may be a planar shape or a rotationally symmetric shape other than spherical. Further, it may have a non-axisymmetric shape.

Further, in the above-described embodiment, the held surface L1 of the component L is directly held by the holder 2. However, in order to protect the held surface L1 of the component L, the holder 2 and the component L May be formed with a protective layer.
Furthermore, in the above-described embodiment, although the manufacturing apparatus 4 that has manufactured the holder 2 is used to detect the surface runout, which is the inclination of the held surface L1 of the component L with respect to the holder 2, the present invention is not limited to this. Alternatively, surface run-out may be detected using the manufacturing apparatus 1. In this way, the shape of the component L can be immediately created without removing the holder 2 from the work shaft 111 after the surface runout detection step is performed. Further, without using the manufacturing apparatus 4 or the manufacturing apparatus 1, the holder 2 may be installed on the upper surface of a turntable or the like as a rotating unit to detect surface runout.

Further, in the above-described embodiment, the polishing is performed after the shape is created. However, when a desired surface can be obtained only by the shape creation, the polishing step may be omitted. By doing so, the manufacturing time of the component L can be reduced.
In the above-described embodiment, the pick-up tester 5 is used to perform the surface runout detection process and the centering adjustment process. However, the present invention is not limited to this, and other length measuring devices, such as a dial gauge, may be used. Is also good. Further, a non-contact type length measuring device, for example, a laser length measuring device may be used. By using the laser length measuring device, even when it is difficult to bring the measuring element into contact with the measuring portion 22 of the holder 2 or the held surface L1 of the component L, the measurement can be performed, and the surface runout detecting process can be performed. In addition, the centering adjustment process can be performed accurately.
Further, in the above-described embodiment, the holder 2 according to the shape of the component L is processed in the stage before the shape creation of the component L. However, the shape of the component L is created using a holder manufactured in advance. Is also good.
Further, in the above-described embodiment, after the part L is polished, the centering step of matching the outer diameter axis of the part L with the optical axis is performed. However, the centering step may be performed before the polishing step. Good. In addition, the centering step may be performed before the shape creation step.

(Example)
Next, examples of the present invention will be described.
The component L was manufactured using the manufacturing apparatus 1 and the manufacturing apparatus 4 of the embodiment.
The component L is glass whose surface L1 to be held is previously finished in a spherical shape with a radius of curvature of 100.000 mm, and has a shape accuracy of 0.5 μm or less and a surface roughness Rmax of 0.5 μm or less. The outer diameter of the component L before centering is 40.050 mm, the standard finished outer diameter after centering is 40.000 ± 0.010 mm, and the standard deviation of the held surface L1 is 0.002 mm. The following was set.
Brass was used as the material of the holder 2, and wax was used as the holding medium 25 for holding the component L.

First, a holder (semi-finished product) in which the mounting unit 21 is already prepared is mounted on the chuck 431 of the manufacturing apparatus 4, and the chuck 431 of the manufacturing apparatus 4 is rotated at 1000 rpm to apply the rotation to the mounting unit 21. The vertical measuring unit 22 is cut. Note that a vacuum chuck was used as the chuck 431 of the manufacturing apparatus 4.
Subsequently, a spherical surface having a radius of curvature of 100.000 mm was machined as the contact portion 23, and then a filling gap 24 for filling the holding medium 25 for holding the component L was machined.
Thereafter, the rotation of the chuck 431 of the manufacturing apparatus 4 was stopped, the holder 2 was removed from the chuck 431, and the component L was temporarily fixed to the holder 2 using wax as the holding medium 25. Next, the component L fixed to the holder 2 was mounted on the manufacturing apparatus 4, and a centering adjustment step and a chamfering detection step were performed as in the above embodiment. At this time, since the runout of the held surface L1 of the optical component L was 0.0005 mm, which was within the standard, the process was shifted to the next step.
First, the part L fixed to the holder 2 was mounted on the manufacturing apparatus 1, centering was performed in the same manner as in the above embodiment, and the aspherical shape was ground. Subsequent steps are the same as in the above embodiment.

(Results and discussion)
The outer diameter of the part L after the centering step was 40.008 mm, which was within the standard. Then, the center of the optical axis and the outer diameter axis were substantially coincident with each other, and the effect of the present invention that the center of the optical axis and the outer diameter axis could be aligned with high accuracy could be confirmed.
Further, at this time, the runout of the held surface L1 of the component L is 0.0005 mm, and even after grinding, polishing, and centering, a deviation or the like from the state where the component L is fixed to the holder 2 occurs. I was able to confirm that there was no.

  INDUSTRIAL APPLICABILITY The present invention can be used for manufacturing a mold for manufacturing an optical component, an eyeglass lens, and the like.

FIG. 1 is a schematic diagram showing a manufacturing apparatus according to an embodiment of the present invention. The front view which shows the holder of this invention. The schematic diagram which shows the manufacturing apparatus which manufactures the said holding tool. FIG. 4 is a schematic diagram illustrating a centering adjustment step of the embodiment. FIG. 4 is a schematic diagram illustrating a surface runout detection step of the embodiment. FIG. 3 is a schematic diagram illustrating a centering step of the embodiment. BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows one Embodiment of the optical component holding method of a prior art.

Explanation of reference numerals

Reference numeral 2: holder, 4: manufacturing apparatus, 5: pick tester (length measuring device), 21: mounting section, 22: measuring section, 23: contact section, 24: filling gap section, 25: holding medium, 111: work Shaft, 121: machining tool, 231: contact surface, 432: rotating means

Claims (12)

Using a manufacturing apparatus that relatively moves a work axis that rotates about an optical axis of a component fixed to the holder or an axis corresponding to the optical axis, and a processing tool that is arranged in a rotation axis length direction of the work axis. A component processing method for processing a component having an optical axis or an axis corresponding to the optical axis,
A component fixing step of fixing the component to the holder using a holding medium,
A plane runout detecting step of measuring a plane runout that is the inclination of the held surface of the component with respect to the holder, and detecting the plane runout,
When the surface runout exceeds a predetermined value, a runout removing step of adjusting a mounting position of a component with respect to the holder,
A shape creating step of creating a desired shape on the surface to be machined. The method for processing a part according to claim 1,
A method for processing a component, comprising: a polishing step of polishing a work surface created by the shape creation step. The part processing method according to claim 1 or 2,
A method of processing a component, comprising: a centering step of cutting an outer peripheral portion of the component to match an outer diameter axis of the component with an optical axis or an axis corresponding to the optical axis. The method for processing a part according to any one of claims 1 to 3,
The holder includes a measurement unit having a circular cross section in a direction perpendicular to the axis length direction of the work axis, a contact unit provided on the measurement unit, the contact unit contacting a held surface of the component, and the contact unit; Opening toward the contact surface of the part with the component, and having a filling gap for filling the holding medium,
A holder processing step of processing the holder,
The holder processing step includes a measurement section processing step of forming the measurement section,
A contact portion processing step of forming the contact portion,
A filling gap portion forming step of forming the filling gap portion. The method for processing a part according to claim 4,
The holder has a mounting portion on which the measurement unit is erected and is mounted on the work shaft,
The method of processing a component, wherein the holder processing step includes a mounting part processing step of processing the mounting part. The part processing method according to claim 4 or 5,
In the contact part processing step, a contact surface having substantially the same shape as a held surface of the component is formed. The method for processing a part according to any one of claims 1 to 6,
The holding tool has a contact portion that contacts the held surface of the component, and a filling gap that opens toward the contact surface of the contact portion with the component and fills the holding medium. ,
In the component fixing step, when fixing the component using a holding medium, the volume of the holding medium is set to be less than the volume of a filling gap portion for filling the holding medium, and the component is fixed to the holder. How to process parts. The method for processing a part according to any one of claims 1 to 7,
The holder has a measuring section having a circular cross section in a direction perpendicular to the axis length direction of the work axis, and a contact section provided on the measuring section and in contact with a held surface of the component. Yes,
Prior to the surface runout detection step, the holder is attached to a rotating unit, and a centering adjustment step of matching a center axis passing through the center of the cross section of the measuring unit of the holder with the rotation axis of the rotating unit is performed. ,
In the surface runout detection step, the holder is rotated by the rotating unit in a state where the central axis of the measurement unit of the holder is aligned with the rotation axis,
A method of processing a component, comprising: measuring an outer peripheral portion of a held surface of the component with a length measuring device fixed at a predetermined position, and detecting a deviation amount of a value indicated by the length measuring device. The method for processing a part according to any one of claims 1 to 8,
A method for processing a part, wherein the holding medium is made of a thermoplastic medium. The method for processing a part according to any one of claims 1 to 9,
A method of processing a component, wherein a held surface of the component is previously finished to a desired optical surface. Using a manufacturing apparatus that relatively moves a work axis that rotates about the optical axis of the part or an axis corresponding to the optical axis, and a processing tool that is arranged in the rotational axis length direction of the work axis, the optical axis or the optical axis When processing a part having a shaft corresponding to the, holding the part, a holder attached to the work shaft,
A mounting section mounted on the work shaft, a measuring section that is erected on the mounting section and has a circular cross section in a direction perpendicular to the axial direction of the work shaft,
A contact portion provided on the measurement portion, the contact portion having a contact surface with a held surface of the component;
A holder having an opening at an abutting surface of the abutting portion with a component and a filling gap for filling a holding medium. The holder according to claim 11,
A holding tool, wherein a contact surface of the contact portion has substantially the same shape as a held surface of the component.

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