Chattering vibration inhibiting mechanism of machine tool

• US 20070243033A1
• Filed: 03/21/2007
• Published: 10/18/2007
• Est. Priority Date: 04/04/2006
• Status: Active Grant

• Current Assignee: MORI Seiki Company Limited
• Original Assignee: MORI Seiki Company Limited
• Inventors: Hoshi, Takashi, Fukunaga, Osamu, Hashimoto, Kazutada
• Granted Patent: US 7,690,872 B2
• Time in Patent Office: Days
• US Class Current: 409/141
• CPC Class Codes: B23Q 11/0035 by adding or adjusting a mass, e.g. counterweights
• CPC Class Codes: B23Q 2220/006 Spindle heads
• CPC Class Codes: Y10T 409/304312 with means to dampen vibration

Abstract

A chattering vibration inhibiting mechanism capable of inhibiting chattering vibration of a machine tool without increasing weight nor requiring a time-consuming adjustment work is provided. A box-shaped package body 21 attached to a spindle head 6, a supporting member 22 disposed to bridge between front and rear walls 21a, 21b in the box-shaped package body 21, and a damper 23 composed of an elastic member 27 and a weight 26 supported by the supporting member 22 are provided.

Claims

1. A chattering vibration inhibiting mechanism of a machine tool designed to inhibit chattering vibration caused in machining by the machine tool provided with a spindle head supporting a spindle equipped with a tool in a rotatable manner, comprising:

a box-shaped package body attached to said spindle head;

a supporting member disposed in said box-shaped package body; and

a damper composed of an elastic member and a weight which are supported by said supporting member.

2. The chattering vibration inhibiting mechanism of the machine tool according to claim 1,

wherein said supporting member is disposed to bridge mutually facing walls of said box-shaped package body to make an axis line thereof be in parallel with a spindle axis of said spindle head.

3. The chattering vibration inhibiting mechanism of the machine tool according to claim 2,

wherein said damper is composed of the elastic members disposed and fixed onto both surfaces of the weight, and wherein said damper is fixed to said supporting member with a space provided between the weight and said supporting member.

4. The chattering vibration inhibiting mechanism of the machine tool according to claim 3,

wherein an attached position of said damper with respect to said supporting member is adjustable in the axial direction of said supporting member.

5. The chattering vibration inhibiting mechanism of the machine tool according to claim 1,

wherein said box-shaped package body is disposed on an end surface of said spindle head opposite to an end surface equipped with the tool.

6. The chattering vibration inhibiting mechanism of the machine tool according to claim 2,

wherein said box-shaped package body is disposed on an end surface of said spindle head opposite to an end surface equipped with the tool.

7. The chattering vibration inhibiting mechanism of the machine tool according to claim 3,

wherein said box-shaped package body is disposed on an end surface of said spindle head opposite to an end surface equipped with the tool.

8. The chattering vibration inhibiting mechanism of the machine tool according to claim 4,

wherein said box-shaped package body is disposed on an end surface of said spindle head opposite to an end surface equipped with the tool.