PROCESSING MACHINE

• US 20150090084A1
• Filed: 03/27/2013
• Published: 04/02/2015
• Est. Priority Date: 03/30/2012
• Status: Active Grant

• Current Assignee: Citizen Watch Co Limited (Citizen Electronics Company Limited)
• Original Assignee: Citizen Holdings Co., Ltd., Citizen Machinery Miyano Co., Ltd.
• Inventors: Kotake, Kyota, Asahara, Noriyuki, Kasuya, Hiroshi
• Granted Patent: US 9,592,556 B2
• Time in Patent Office: Days
• US Class Current: 82/162
• CPC Class Codes: B23B 13/126 Supports
• CPC Class Codes: B23B 2260/126 Seals
• CPC Class Codes: B23B 7/06 with sliding headstock
• CPC Class Codes: B23Q 1/763 Rotating steadies or rests
• CPC Class Codes: Y10T 82/2593 Work rest

Abstract

A main spindle (11) is moved to a region of a rotary guide bush device (30) where the rotary guide bush device (30) has been attached to be disposed in a position of a front (F) along an axis (C) direction when the rotary guide bush device (30) having a guide bush (31) (guide bush), which is supported in a removable manner by a guide bush-supporting base (20) (supporting base) provided in the front (F) along the axis (C) direction of the main spindle (11), is removed, and a seal member (60) fixed to the guide bush-supporting base (20) has contact with an outer circumference surface (12a) of a main spindle cover (12) over an entire circumference, so that processing with or without the guide bush can be selected and a complicated process required for switching the processing with or without the guide bush can be simplified.

Claims

1. A processing machine comprising a guide bush supported in a removable manner by a supporting base provided in a front along an axis direction of a main spindle, wherein

the main spindle is disposed in a position of a rear of the guide bush along the axis direction when the guide bush is attached to the supporting base, and the main spindle is moved to a region of the guide bush where the guide bush has been attached to be disposed in a position of the front along the axis direction when the guide bush is removed from the supporting base, and

the supporting base is fixedly provided with a seal member which has contact with an outer circumference surface on the main spindle side over an entire circumference when the main spindle is disposed in the position of the front.

2. The processing machine according to claim 1, wherein the seal member is disposed outside an outer circumference surface of the guide bush when the guide bush is attached to the supporting base, and

an inner diameter of the seal member is formed smaller than an outer diameter on the main spindle side.

3. The processing machine according to claim 2, wherein the inner diameter of the seal member is formed larger than an outer diameter of a guide bush holder which holds the guide bush.

4. The processing machine according to claim 1, wherein the main spindle side includes a front thin diameter portion along the axis direction and a rear thick diameter portion having an outer diameter larger than the thin diameter portion, and

the seal member is located outside the thin diameter portion when the guide bush is attached to the supporting base, the seal member is located outside the thick diameter portion when the guide bush is removed from the supporting base, and an inner diameter of the seal member is formed smaller than an outer diameter of the thick diameter portion.

5. The processing machine according to claim 4, wherein the inner diameter of the seal member is formed larger than an outer diameter of the thin diameter portion.