Title:
割出装置
Document Type and Number:
Japanese Patent JP4993723
Kind Code:
B2
Abstract:
An indexing device (100) is provided, in which a clamp sleeve (34a) extending along a rotary shaft (39) is disposed in the space between the rotary shaft (39) and a housing hole (31s) of a frame (31b), and the clamp sleeve (34a) bulges toward the rotary shaft (39) by supply of pressure fluid, so as to non-rotatably hold the rotary shaft (39). A pressure-receiving cylindrical portion (38a1) extending in parallel to the rotary shaft (39) is provided around the rotary shaft (39) integrally with the frame (31b). A cylinder-like portion (38b) extending along the rotary shaft (39) is provided integrally with the rotary shaft (39) in the space between the pressure-receiving cylindrical portion (38a1) and the clamp sleeve (34a). When the clamp sleeve (34a) bulges, the cylinder-like portion (38b) is pinched by the clamp sleeve (34a) and the pressure-receiving cylindrical portion (38a1). Thus, the contact area, in which a frictional force is produced, is increased, and a desirable braking force can be obtained without the pressure of the pressure fluid being increased.
Inventors:
Tatsuda good religion
Application Number:
JP2007183611A
Publication Date:
August 08, 2012
Filing Date:
July 12, 2007
Export Citation:
Assignee:
Tsudakoma Industry Co., Ltd.
International Classes:
B23Q16/10
Domestic Patent References:
| JP2002103181A | ||||
| JP2000107963A | ||||
| JP2104946U |
Attorney, Agent or Firm:
Kunio Nakagawa