Hybrid ultraprecision machining device and hybrid ultraprecision machining method

Patent metadata

Field	Value
Publication number	US-9339889-B2
Application number	US-201314027303-A
Country	US
Kind code	B2
Filing date	Sep 16, 2013
Priority date	Mar 17, 2011
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

There is provided a hybrid ultraprecision machining device for manufacturing a micro-machined product from a workpiece, the machining device comprising: an electromagnetic-wave-machining means for roughly machining the workpiece; a precision-machining means for precisely machining the roughly machined workpiece, the precision-machining means being equipped with a replaceable cutting tool selected from the group consisting of a planar tool, a shaper tool, a fly-cutting tool, a diamond-turning tool and a micro-milling tool; a shape-measurement means for measuring a shape of the workpiece upon use of the electromagnetic-wave machining means and the precision-machining means; and a control means for controlling the electromagnetic-wave-machining means or the precision-machining means, based on information on the shape of the workpiece, the shape being measured by the shape-measuring means.

First claim

The invention claimed is:

1. A hybrid ultraprecision machining device for manufacturing a micro-machined product from a workpiece, the machining device comprising:
an electromagnetic-wave-machining means for roughly machining the workpiece;
a precision-machining means for precisely machining the roughly machined workpiece, the precision-machining means being equipped with a replaceable cutting tool selected from the group consisting of a planar tool, a shaper tool, a fly-cut tool, a diamond-turning tool and a micro-milling tool;
a shape-measurement means for measuring a shape of the workpiece upon use of the electromagnetic-wave machining means and the precision-machining means; and
a control means for controlling the electromagnetic-wave-machining means or the precision-machining means, based on information on the shape of the workpiece, the shape being measured by the shape-measuring means.

2. The hybrid ultraprecision machining device according to claim 1 , wherein a micro part of the micro-machined product has a dimension of 10 nm to 15 mm.

3. The hybrid ultraprecision machining device according to claim 1 , wherein the precision-machining means has an additional function of vibration cutting.

4. The hybrid ultraprecision machining device according to claim 1 , wherein the electromagnetic-wave-machining means is a laser-machining means.

5. The hybrid ultraprecision machining device according to claim 4 , wherein a table for mounting the workpiece, and/or the laser-machining means are/is movable, and thereby an angle of a laser incident light from the laser-machining means is adjustable with respect to the workpiece.

6. The hybrid ultraprecision machining device according to claim 4 , wherein the laser-machining means comprises a plurality of laser generators capable of generating different laser wavelengths from each other.

7. The hybrid ultraprecision machining device according to claim 1 , further comprising a computing means for creating data for a correction machining, based on data measured by the shape-measurement means and also based on data on a machining path of the electromagnetic-wave-machining means and/or the precision-machining means, the path being obtained from a model for the micro-machined product.

8. The hybrid ultraprecision machining device according to claim 1 , wherein a micro part of the micro-machined product has a dimension of 10 nm to 15 mm, and
wherein the micro-machined product is a metal mold for an optical lens, or an optical lens.

9. A hybrid ultraprecision machining method for manufacturing a micro-machined product from a workpiece, the method comprising:
(i) subjecting the workpiece to an electromagnetic-wave-machining process, and thereby roughly machining the workpiece; and
(ii) subjecting the roughly machined workpiece to a cutting process selected from the group consisting of a planar machining, a shaper machining, a fly-cut machining, a diamond-turning machining and a micro-milling machining, and thereby precisely machining the roughly machined workpiece,
wherein, a shape of the workpiece is measured upon at least one of the steps (i) and (ii), and thereby the step (i) or (ii) is performed based on the measured shape.

10. The hybrid ultraprecision machining method according to claim 9 , wherein a micro part of the micro-machined product to be manufactured has a dimension of 10 nm to 15 mm.

11. The hybrid ultraprecision machining method according to claim 9 , a grinding process in addition to the cutting process is performed in the precisely machining of the step (ii).

12. The hybrid ultraprecision machining method according to claim 9 , wherein the workpiece is at least subjected to a vibration cutting process in the step (ii).

13. The hybrid ultraprecision machining method according to claim 9 , wherein the electromagnetic-wave-machining process of the step (i) is performed by irradiating the workpiece with a laser.

14. The hybrid ultraprecision machining method according to claim 13 , wherein an orientation of the laser irradiation and/or the workpiece are/is adjusted according to a divergence angle of the laser, and thereby a vertical surface of the workpiece is machined.

15. The hybrid ultraprecision machining method according to claim 9 , wherein an operation of at least one axis of a table for mounting the workpiece and an operation of at least one axis of a precision-machining means and/or an electromagnetic-wave-machining means are controlled in synchronization with each other.

16. The hybrid ultraprecision machining method according to claim 9 , wherein a micro part of the micro-machined product to be manufactured has a dimension of 10 nm to 15 mm, and
wherein a metal mold for an optical lens, or an optical lens is manufactured as the micro-machined product.

Assignees

• Panasonic Corp
• Panasonic Ip Man Co Ltd

Inventors

• Urata Noboru
• Okugawa Kimitake
• Uchinono Yoshiyuki
• Shindo Takashi

Classifications

• B23Q39/02

  the sub-assemblies being capable of being brought to act at a single operating station · CPC title

• B23K26/083

  Devices involving movement of the workpiece in at least one axial direction · CPC title

• B23P25/006

  Heating the workpiece by laser during machining · CPC title

• B23P25/00

  Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress · CPC title

• B23K26/0093

  combined with mechanical machining or metal-working covered by other subclasses than B23K · CPC title