# US 2012/0207869 A1 · Cutting Tool, Method for Manufacturing Molding Die, and Molding Die for Array Lens

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- Number: US 2012/0207869 A1
- Document ID: US20120207869A1
- Status: Published application
- Kind: A1
- Application number: 13/503,830
- Filed: 2010-10-18
- Published: 2012-08-16
- Earliest claimed: 2009-11-05
- Inventors: Toshiyuki Imai; Shigeru Hosoe; Toshiya Takitani; Hiroyuki Matsuda; Tomoyuki Morimoto
- Web page: https://patentgrep.com/patent/US20120207869A1

## CPC

- B23C 5/1009: {Ball nose end mills}
- B23C 3/20: for shaping dies
- B23C 5/1081: {with permanently fixed cutting inserts (B23C5/1018 and B23C5/1063 take precedence)}
- B28D 1/18: by milling, e.g. channelling by means of milling tools
- B28D 5/02: by rotary tools, e.g. drills {(B28D5/0005 takes precedence)}
- B29D 11/0048: {Moulds for lenses (moulds for plastic articles in general B29C33/00)}
- B23B 2226/31: Diamond
- B23C 2226/31: Diamond
- B23C 2240/08: Brazed connections
- B23C 2250/16: Damping vibrations
- B23C 2270/10: Use of ultrasound
- B23D 2277/2442: Diamond
- B23G 2225/16: Diamond
- G02B 3/0025: {Machining, e.g. grinding, polishing, diamond turning, manufacturing of mould parts}
- Y10T 407/1906: including holder [i.e., head] having seat for inserted tool
- Y10T 407/22: including holder having seat for inserted tool
- Y10T 409/303808: including infeeding
- B23C: MILLING (broaching B23D; broach-milling in making gears B23F; arrangement for copying or controlling B23Q)
- B28D: WORKING STONE OR STONE-LIKE MATERIALS
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
- B23G: THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH (making helical grooves by turning B23B5/48, by milling B23C3/32, by forging, pressing, or hammering B21K1/56, by grinding B24B19/02; arrangements for copying or controlling B23Q; thread-forming by corrugating tubes B21D15/04, by rolling B21H3/02)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A cutting tool including a cutting blade, a shank section, and a supporting member for supporting and fixing the cutting blade, the cutting blade being fixed on one end of the supporting member, and the other end of the supporting member being fixed to the shank section, wherein a void formed among the shank section, the cutting blade, and the supporting member is filled with a filling agent.

## Claims

### Claim at position 1

-12. (canceled)

### Claim 13

A cutting tool comprising:
a cutting blade;
a shank section; and
a supporting member for supporting and fixing the cutting blade, the cutting blade being fixed on one end of the supporting member, and the other end of the supporting member being fixed to the shank section,
wherein a void formed among the shank section, the cutting blade, and the supporting member is filled with a filling agent.

### Claim 14 (depends on 13)

The cutting tool described in claim 13, wherein the filling agent is a wax, a solder, or a resin adhesive.

### Claim 15

A cutting tool which cuts a subject material by making a swirling revolution of a cutting blade while rotating a part of the cutting blade about a rotation center part of the cutting blade, the cutting tool comprising:
a shank section; and
a supporting member for supporting and fixing the cutting blade, the cutting blade being fixed on one end of the supporting member, and the other end of the supporting member being fixed to the shank section,
wherein a void formed among the shank section, the cutting blade, and the supporting member is filled with a filling agent, and
wherein the rotation center part is a part of a circular arc, and a radius r of the circular arc of the rotation center part satisfies the condition of: 0.05≦r≦5 μm.

### Claim 16 (depends on 15)

The cutting tool described in claim 15, wherein the rotation center part is within a square range having sides of 10 μm.

### Claim 17

A method for manufacturing a molding die by a cutting work using a cutting tool, the cutting tool comprising a cutting blade, a shank section, and a supporting member for supporting and fixing the cutting blade, the cutting blade being fixed on one end of the supporting member, and the other end of the supporting member being fixed to the shank section; wherein a void formed among the shank section, the cutting blade, and the supporting member is filled with a filling agent, the method comprising the steps of:
forming a convex or concave part by applying a rough processing to a subject material to be cut; and
applying a finish processing to the convex or concave part by making swirling revolution of a ball end mill while rotating the ball end mill with respect to the convex or concave part,
wherein in the step of applying the finish processing to the convex or concave part, with respect to a first area including an area perpendicular to the optical axis of the convex or concave part, a cutting work of the finish processing is executed by inclining a rotation axis of the ball end mill against the optical axis, and with respect to a second area adjacent to the first area, the cutting work is executed by making the rotation axis of the ball end mill parallel to the optical axis.

### Claim 18 (depends on 17)

The method for manufacturing a molding die described in claim 17, wherein in the step of applying the finish processing to the concave or convex part, a plurality of the concave or convex part are processed in an array arrangement.

### Claim 19 (depends on 17)

The method for manufacturing a molding die described in claim 17, in case of changing a posture of the ball end mill between the first area and the second area, the posture change is completed by a single loop of the swirling revolution of the ball end mill.

### Claim 20 (depends on 19)

The method for manufacturing a molding die described in claim 19, the ball end mill is made swirling revolution with a visual angle of 10-90% of the inclination angle of the ball end mill in the first area.

### Claim 21

The molding die for array lens, which is manufactured by the method for manufacturing the molding die described in 17.