JPS6253908U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing a collection chuck which is an embodiment of the present invention. FIG. 2 is a left side view of the adapter portion of the chuck, and FIG. 3 is a right side view of the chuck main body portion. 10: Adapter, 12: End face (second end face), 1
4: Fitting protrusion, 16: Both sides (first end surface), 18:
Tapered hole (fitting hole), 20: Bolt hole, 22: Chuck body, 24: Tapered shaft (fitting shaft), 2
6: Flange part, 32: Through hole, 60: Plane, 6
2: Notch, 64: Projection, 70: Clamper hole, {7
2: Female threaded hole, 84: Threaded member, 88: Machine screw}
(clamper drive mechanism), 74: clamper, 80:
Slope, 82: Projection.

Claims (1)

[Claims for Utility Model Registration] It has a short cylindrical shape as a whole, has a fitting hole located on the center line of the first end surface, and penetrates in the radial direction from the outer circumferential surface to the fitting hole, and is close to the outer circumferential surface. It has a clamper hole whose part is a female threaded hole, and a fitting protrusion at a position on the center line of the second end face opposite to the first end face, and the fitting protrusion is connected to the rotation axis of the machine tool. or an adapter that is fixed to the rotating shaft or a member fixed thereto while being fitted into a center hole of a member fixed thereto; a fitting shaft part that can be fitted into the fitting hole; a flange portion that can be brought into close contact with the first end surface while being fitted into the fitting hole, and a notch having a plane parallel to the axis thereof is formed in the fitting shaft portion; a chuck main body having a plurality of protrusions extending perpendicularly to the axis of the fitting shaft portion on a plane and forming an inclined surface with the side facing the flange portion inclined backward; and a chuck body in the clamper hole. fitted in a slidable and non-rotatable manner, having a plurality of protrusions corresponding to the plurality of protrusions on an end face facing the fitting shaft portion, and engaging with the inclined surface by the inclined surfaces of the protrusions; A clamper for pulling the fitting shaft portion into the fitting hole, and a clamper provided between the clamper and the chuck body, including at least one threaded connection portion, which can be rotated in both forward and reverse directions from the outside. a clamper drive mechanism that moves the clamper forward and backward; a clamper drive mechanism that is slidably but non-rotatably fitted into a collet hole formed through the center of the chuck body;
A quickly replaceable collet chuck that grips and releases a shaft-shaped object by contracting and expanding its diameter as it moves relative to the chuck body in a direction parallel to the center line.