JPH0644567Y2 - Quick change adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a quick change adapter for detachably attaching a tool holder to a spindle of a processing machine.

[Prior Art] Such a quick change adapter is known (for example, Japanese Patent Laid-Open No. 61-297045).

[Problems to be solved by the invention] In this type of quick change adapter, the tool holder is clamped / unclamped via the inside of the spindle of the processing machine.

Therefore, the attachment of the adapter requires a dedicated spindle, which lacks versatility.

An object of the present invention is to provide a quick change adapter with increased versatility.

[Means for Solving the Problem] A quick change adapter according to the present invention includes a wedge member for projecting into a radial recess formed in an engaging recess of a tool holder to clamp the tool holder, and a quick change adapter of the adapter body. A slide member provided with wedge member moving means that is movable in the axial direction and moves the wedge member in the radial direction, and moves to the tool holder side to move the wedge member outward in the radial direction to clamp the tool holder. And a slide member that moves to the side facing the tool holder to move the wedge member inward in the radial direction to unclamp the tool holder, and a slide member that is movable in the radial direction of the adapter body and moves the slide member. A piston member provided with a moving means, which moves radially outward to move the slide member to the tool holder side, There are provided means for moving inward in the radial direction to move the slide member to the side facing the tool holder, and spring means for urging the piston member outward in the radial direction.

[Operation] In the quick change adapter configured as described above, the piston member is moved from the outer side in the radial direction of the adapter to the inner side in the radial direction by an external force to move the slide member to the tool holder side, whereby the wedge member is formed. Is moved inward in the radial direction to engage and attach the engaging recess of the tool holder to the adapter body.

Then, when the external force is released, the piston member is biased by the spring means to move radially outward to move the slide member to the side facing the tool holder, which causes the wedge member to move radially outward. Project into the recess of the tool holder and clamp the tool holder.

When releasing the clamp, the piston member is moved inward in the radial direction by the external force as described above, the wedge member is moved inward in the radial direction, and is released from the concave portion of the tool holder to release the clamp.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, an adapter indicated by reference numeral 10 is attached to an end surface of a spindle A of a processing machine by four bolts 4, and a main body 11 of the adapter 10 has a body 11 to which a tool holder 1 is attached. A cylindrical portion 12 that engages with the fitting hole 2 is provided in a protruding manner. A wedge piece 13 which is a wedge member that protrudes into a plurality of (three in the illustrated example) recesses 3 formed in the engagement hole 2 in the radial direction and which clasps the tool holder 1 is formed in the cylindrical portion 12. It is accommodated in the hole 12a so as to be movable in the radial direction.

On the other hand, a slide piece 15 which is a prismatic slide member is movably accommodated on the axis of the main body 11, and the slid piece 15 is provided with a wedge member moving means B.

As shown in detail in FIGS. 4 and 5, the moving means B is formed on the cam piece 16 extending radially outward from the slide piece 15 and on the wedge piece 13 so as to engage with the cam piece 16. The cam groove 14 is formed. The cam piece 16 is formed in a T-shaped cross section that inclines radially inward from the spindle A side, and the cam groove 14 is similarly formed in a T shape. Therefore, when the slide piece 15 is moved to the tool holder 1 side, the wedge piece 13 is moved radially outward via the cam groove 14 by the radially outer end surface of the cam piece 16, and protrudes into the recess 3 to project into the tool holder 1. Is clamped and the slide piece 15 is moved to the spindle A side, the wedge piece 13 is moved inward in the radial direction via the cam groove 14 by the radially inner end surface of the cam piece 16.
The tool holder 1 is released from the recess 3 to release the clamp of the tool holder 1.

Also, the main body 11 has a clamp piston, which is a piston member.
18 is movably accommodated in the radial direction, one end of which is the main body 11
A protruding portion 18a is formed by protruding from the clamp piston 18, and a slide member moving means C is provided on the clamp piston 18.

As shown in FIGS. 6 to 8, the slide member moving means C is formed on the cam pieces 19, 19 formed in the middle of the clamp piston 18 and on the slide piece 15 so as to engage with the cam piece 19. Cam groove 17 and The cam piece 19 is gently inclined from one end on the side of the spindle A to the other end on the side of the tool holder 1 on one side of the two-sided chamfer 18b of the clamp piston 18 through the axis of the slide piece 15. The cam groove 17 is formed in a T-shaped cross section including 18b, and the cam groove 17 is formed in a cross shape in which the tool holder 1 side is long in the state of FIG. Therefore, when the protrusion 18a of the clamp piston 18 is moved outward in the radial direction, the slide piece 15 is moved to the tool holder 1 side via the cam groove 17 by the upper surface of the cam piece 19, and the protrusion 18a of the clamp piston 18 is radiused. When moving inward in the direction, the slide piece 15 moves to the spindle A side via the cam groove 17 by the lower surface of the cam piece 19. A spring means D is provided between the clamp piston 18 and the main body 11.

The spring means D is interposed between the rods 21, 21 arranged in parallel by the support pieces 20 on both sides of the clamp piston 18, and the flange portion 22 formed at the end of each rod 21 and the main body 11. It is composed of a coned disc spring 23. Therefore, the disc spring 23 urges the clamp piston 18 outward in the radial direction.

In FIG. 2, the projection 18a of the clamp piston 18 is connected to the piston rod 5 of a hydraulic cylinder (not shown). However, the present invention is not limited to this, and the end portion of the clamp piston 18 may be screwed into the main body 11 and a hexagonal hole for a hexagon wrench may be formed in the end surface of the clamp piston 18.

When the tool holder 1 is clamped, the hydraulic cylinder is actuated and the clamp piston 18 is pushed down in FIG. 2 below, and the lower surface of the cam piece 19 is moved into the cam groove of the slide piece 15.
17 Engage with the upper surface and move the slide piece 15 to the spindle A side. Then, the lower surface of the cam piece 17 of the slide piece 15 engages with the upper surface of the cam groove 14 of the wedge piece 13, and the wedge piece 13 is moved inward in the radial direction and retracted into the square hole 12a.

Therefore, the engaging hole 2 of the tool holder 1 is engaged with the tubular portion 12,
When the operation of the hydraulic cylinder is stopped, the disc spring 23 urges the clamp piston 18 upward, and the wedge piece 13 projects into the concave portion of the tool holder 1 and clamps the tool holder 1 in a manner reverse to the above. .

When the tool holder 1 is replaced, the hydraulic cylinder is operated to push in the clamp piston 18 as described above, the wedge piece 13 is retracted and released from the recessed portion 3, and the clamp is released.

[Advantages of the Invention] Since the present invention is configured as described above, it is possible to perform clamping and unclamping by operating with an external force from outside in the radial direction of the adapter without going through the inside of the spindle. Therefore, it can be attached to an existing spindle to enhance versatility.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side sectional view, FIG. 3 is a bottom view, FIG. 4 is a sectional view taken along the line II of FIG. 1, and FIG. Is a sectional view taken along the line II-II in FIG. 1, FIG. 6 is a front view of the clamp piston, and FIG. 7 is IV-IV in FIG.
FIG. 8 is a sectional view taken along line III-III in FIG. 2. A ... Spindle, B ... Wedge member moving means, C ...
Slide member moving means, D ... Spring means, 1 ... Tool holder, 3 ... Recess, 10 ... Adapter, 11 ... Main body, 13
...... Wedge piece, 14 …… Cam groove, 15 …… Slide piece, 16 …… Cam piece, 17 …… Cam groove, 18 …… Clamp piston, 19 …… Cam piece, 23 …… Disc spring

Claims (1)

[Scope of utility model registration request] 1. A wedge member protruding from a radial recess formed in an engaging recess of a tool holder to clamp the tool holder on the adapter body, and the wedge member movable in the axial direction of the adapter body in the radial direction. A slide member having a wedge member moving means that moves to a tool holder side, moves the wedge member radially outward to clamp the tool holder, and moves to a side facing the tool holder. A piston member provided with a wedge member that moves inward in the radial direction to unclamp the tool holder, and a piston member that includes slide member moving means that is movable in the radial direction of the adapter body and moves the slide member. Direction outwardly to move the slide member to the tool holder side, and radially inward to move the slide member to the tool holder. Quick change adapter as to move on the side, characterized in that a spring means for biasing said piston member radially outward.