JPS61142002A - Optical member machining unit - Google Patents

Abstract

PURPOSE:To make it possible to cut spherical concavities and convexities having minute radius by making a table travel by means of a numerically controlled drive unit in the direction of X, Y, and Z axis trembling the cutting chip in contact with a workface through a vibration source. CONSTITUTION:A machining unit 1 is composed of the workpiece hold section 3 for holding a workpiece 2, a machining chip 4 capable of freely contacting to the workpiece 2a of the workpiece 2, the trembler 6 generated by an ultrasonic generator 5, a horn 7 for transmitting the trembling from the trembler 6 to the chip 4 amplifying it, and a table drive mechanism 8. The workpiece 2 is driven and controlled by the table 9 driven by a numerically controlled drive unit in the directions of X, Y, and Z axis. Minute spherical faces are cut by contacting the end of the chip 4 with the workface 2a through the numerically controlled drive unit and setting the frequency and amplitude of the trembler 6 according to the cutting amount by the chip 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an optical member processing apparatus for cutting, turning, etc. an optical member.

BACKGROUND ART An example of the glaze processing apparatus described above is a curve generator (CG machine).

However, although it is possible to process concave spherical surfaces and convex spherical surfaces with a relatively large radius with the above curve generator, it is difficult to process concave spherical surfaces and convex spherical surfaces with a minute radius (for example, a radius of 1.0 or less). It has been desired to develop a processing machine capable of processing concave and convex spherical surfaces with such minute radii.

Purpose of the Invention The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a processing device for optical members that is capable of cutting, etc. a concave spherical surface or a convex spherical surface with a minute radius. shall be.

Summary of the Invention The present invention includes a workpiece holder, a vibration-driven vibrator having a processing chip, and a vibration-driven vibrator that includes a workpiece holder or a processing chip.
The above object of the present invention is achieved by configuring an optical member processing device with a forward/backward drive mechanism section via a C device.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First Embodiment) FIG. 1 shows an optical member processing apparatus 1 according to the present invention. As shown in the figure, the processing device 1 includes a workpiece holder 3 that holds a workpiece (optical member) 2, and a processing tip (diamond chip, diamond cutting tool) 4 that can freely come into contact with a processed surface 2a of the workpiece 2. A vibrator 6 is equipped and driven for imaging via an ultrasonic oscillator (vibration source) 5, a horn 7 that amplifies the vibration from the vibrator B and transmits it to the processing chip 4, and a drive table mechanism section 8. It is composed of Toyoshi.

The machining tip 4 constitutes a machining tool made of conical or pyramidal diamond. 8 drive table mechanisms,
It is composed of a work table 9 that supports the work 2 in cooperation with the work holder 3, and an NC drive device (not shown) that drives and controls the work table 9, etc. The work 2 is rotated through the NC drive device. The work table 9 is configured to be driven and controlled in each axis direction of the X-axis, Y-axis, and Z-axis by the work table 9, which is driven and controlled by the work table 9. Note that 1o indicates a coil for ultrasonic oscillation.

The frequency and amplitude of the vibrator 6 can be arbitrarily set depending on the amount of cutting, polishing, etc. of the processing chip 4.

A processing method using the processing apparatus 1 having the above configuration will be explained.

First, the work table 9 is moved via the NC drive device, and the tip of the processing tip 4 is brought into contact with the surface 2a to be processed of the work 2. Next, the frequency, amplitude, etc. of the vibrator 6 are set corresponding to the cutting t'si of the processing chip 4. Next, while the processing chip 4 is vibrated via the vibration source 5, the work table 9 is appropriately operated in the X, Y, and Z axis directions by the NC drive device to process the workpiece 2.

In particular, according to the above configuration 1, the workpiece 2 is
Since the workpiece 2, which is made of optical material, can be cut, etc., it is extremely easy to break the workpiece 2.
Radius 1. (1m+ or less) concave spherical surface of r.

Machining of convex spherical surfaces etc. can be done easily and accurately.

(Second Embodiment) FIG. 2 shows a second embodiment of the present invention. The feature of this embodiment is that the processing apparatus 1 of the present invention is applied to an NC lathe 11. That is, the workpiece 2 is chucked onto the main shaft 12, and the vibrator 6 having the processing tip 4 is fixed to the tool holder 13.

According to the above configuration, the workpiece 2 is rotated via the main shaft 12, and the cutting tool holder 13 is moved to bring the machining tip 4 into contact with the workpiece 2, and then the cutting tool holder 13 is moved to the By controlling the operation in the Y direction, it is possible to turn a concave spherical surface or a convex spherical surface with a minute radius r, as in the first embodiment.

The other configurations, functions, and effects are the same as those of the first embodiment, so their explanations will be omitted.

Effects of the Invention As described above, according to the present invention, it is possible to process a concave spherical surface, a convex spherical surface, etc. with a minute radius into a workpiece, which is extremely difficult to process using a conventional curve generator (CG machine) or the like.

[Brief explanation of the drawing]

FIG. 1 is a structural explanatory diagram showing a first embodiment of the apparatus according to the present invention, and FIG. 2 is a structural explanatory diagram showing a second embodiment of the mounting according to the present invention. 2...Work 2a...Work surface 3...Work support part 4...Machining tip (machining tool) 5...
... Vibration source 6 ... Oscillator 7 ... Horn 9 ... Work table 11 ... NC lathe 12 ... Main shaft

Claims (5)

[Claims] (1) A workpiece holder that holds a workpiece; a vibrator equipped with a machining tip that can freely come into contact with the surface to be machined of the workpiece and configured to be freely driven by vibration via a vibration source; and the workpiece holder or/and and a drive mechanism section that drives a vibrator equipped with the processing chip via an NC drive device. (2) The optical member processing apparatus according to claim 1, wherein the processing chip is a diamond chip. (3) The apparatus for processing an optical member according to claim 1 or 2, wherein the vibrator has a horn that transmits vibration to the processing chip while amplifying it. (4) The drive mechanism section is configured to drive X, Y
2. The optical member processing apparatus according to claim 1, further comprising a work table whose drive is controlled in the Z-axis direction. (5) The drive mechanism section is comprised of a tool holder that moves the vibrator equipped with the processing chip in the X and Y axis directions via an NC control device. A processing device for an optical member as described in 1.