Claims
- 1. An inside chuck device for machine tools, the inside chuck device comprising:
- a spindle rotatably carried by a spindle bed and provided at its end portion with a chuck mount;
- a mandrel chuck formed of a hard metal and concentrically secured to an end of said chuck mount, said mandrel chuck including a guide portion for guiding and centering a workpiece and a plurality of axially extending projections provided on an outer periphery of a chuck portion adjacent to said guide portion;
- a force-out pipe concentrically disposed and axially slidably provided on an outer periphery of said chuck mount for urging an end surface of said workpiece by an external force; and, wherein a workpiece having an inside diameter substantially equal to an outside diameter of said chuck is press fitted to the chuck to plastically deform the workpiece for chucking the latter.
- 2. An inside chuck device as claimed in claim 1, wherein said force-out pipe is axially slidably provided on said chuck mount and is rotated at the same speed as the workpiece.
- 3. An inside chuck device as claimed in claim 1, wherein said projections are provided in at least two groups, and wherein projections of a group adjacent to the end of the chuck have a smaller radial length than that of the projections of the other group.
- 4. An inside chuck device as claimed in claim 3, wherein said force-out pipe is axially slidably provided on said chuck mount and rotated at the same speed as the workpiece.
Priority Claims (1)
Number |
Date |
Country |
Kind |
55-37430 |
Mar 1980 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 279,021 filed June 30, 1981 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
1099821 |
Feb 1961 |
DEX |
00001924 |
Jan 1980 |
JPX |
2045123 |
Oct 1980 |
GBX |
917945 |
Apr 1982 |
SUX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
279021 |
Jun 1981 |
|