JPH0337849Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a quick-change engine adapter that detachably attaches a tool holder to the spindle of a processing machine.

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

Furthermore, a tool holder equipped with a wear compensation means for compensating for chip wear is also known (for example, Japanese Patent Laid-Open No. 46-6897).

However, a tool holder quick-change adapter with wear compensation means has not yet been provided.

[Object of the invention] Accordingly, an object of the invention is to provide a quick-change adapter for detachably attaching a tool holder equipped with wear compensation means to the spindle of a processing machine.

[Structure of the invention] According to the invention, the tool holder includes an engagement recess in the engagement protrusion of the adapter, and an operation for moving in one direction in the axial direction to displace the tip of the bending cartridge radially outward. a spring that biases the actuating rod in the axial direction; a stopper that moves radially inward to stop the actuating rod from moving in the axial direction when the tool holder is unclamped; a spring biased in the locking direction; the adapter includes a wedge member that protrudes into a radial recess formed in the engagement recess of the tool holder to clamp the tool holder; A cylindrical anchor member comprising a draw bar that contacts and locks, and a wedge moving means through which the draw bar is inserted and moves the wedge member in a radial direction, the anchor member moving to a side facing the tool holder and moving the wedge member. moving radially outward to clamp the tool holder; moving toward the tool holder and moving the wedge member radially inward to unclamp the tool holder; and attaching the anchor member to the clamping side. The tensioning spring engages with an outwardly opening inclined serration formed on a plane parallel to the axis of the anchor member, and moves radially outward when the anchor member is clamped, thereby causing the actuation rod to be actuated by the stopper of the tool holder. A serration piece is provided to release the lock.

[Operations and Effects of the Invention] Therefore, the anchor member is urged toward the non-clamped side, the wedge member is moved radially inward, and the engagement protrusion of the adapter is engaged with the engagement recess of the tool holder, thereby achieving the above-mentioned operation. When the bias is released, the anchor member is biased by the spring and moves toward the clamping side, and the wedge member protrudes into engagement with the radial recess of the tool holder to clamp the tool holder. At the same time, the serration piece moves radially outward to release the actuating rod from the tool holder stop. Therefore, the drawbar is moved to the side facing the tool holder, and the actuating rod is moved toward the adapter by the biasing force of the spring, thereby displacing the tips of the bending cartridge radially outward to compensate for the wear of the tips. be able to.

To release the clamp, when the anchor member is moved toward the tool holder, the wedge member moves radially inward to release the clamp on the tool holder. At the same time, the serration piece moves radially inward to release the stopper of the tool holder. The stopper is therefore spring biased and moves radially inward to stop movement of the actuating rod.

The present invention has a simple structure in which a stopper is provided in a known wear compensation means, and the stopper releases the wear compensation means when clamping, and a tool holder equipped with a wear compensation means is detachably attached to the spindle of a processing machine. It is extremely convenient.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In FIG. 1, an actuating rod 3 having a large diameter portion 4 is slidably inserted into a stepped inner hole 2 of a tool holder (in the illustrated example, the boring bar body), which is generally designated by the reference numeral 1. . The actuating rod 3 is biased toward the adapter 20 by a disc spring 5, and its end on the adapter 20 side is locked by a stopper 6 biased by a disc spring 7 when not clamped. . A wedge-shaped concave surface 8, which is deeper toward the adapter 20, is formed on a part of the outer periphery of the tip of the actuating rod 3.

Further, a bending cartridge 9 in which a slot 10 is carved is attached to the bar body 1, and a tip 11 is provided on the cartridge 9. This cartridge 9 has a radial pin 12.
is housed, and its pin 12 and the wedge-shaped concave surface 8
A hemispherical piece 13 is interposed between the two. When the actuating rod 3 is biased by the disk spring 5 and moves toward the adapter 20, the moving wedge-shaped concave surface 8 deforms through the piece 13 and pin 12 to bend the cartridge 9 from the slot 10, and the chip 11 is displaced radially outward to compensate for wear of the tip 11. In addition,
In the figure, reference numeral 14 is a coolant passage, 15 is a rotation stopper for the actuating rod 3, 16 is a chamfered cartridge, 17 is a rough processing cartridge, and 18 is an engagement that engages with the tapered engagement protrusion 21 of the adapter 20. The mating recess 19 is a wedge member 24 of the adapter 20
This is a clamp recess that engages with the clamp.

An adapter, generally designated by the reference numeral 20, is attached to the spindle A of the processing machine;
0 is formed with an inner hole 22 having a large diameter portion 22a on the bar body 1 side, a medium diameter portion 22c on the opposing side, and a small diameter portion 22b between the large diameter portion 22a and the medium diameter portion 22c.
From the large diameter portion 22a toward the engagement projection 21
Opposing square holes 23, 23 are bored as shown in the figure, and a wedge member 24 whose outer end surface on the spindle A side is tapered 24a is housed in the square holes 23. Note that the clamp recess 19 of the bar body 1
The surface of the wedge member 24 opposite to the tapered surface 24a is also formed into a tapered surface 19a.

An anchor member 25 is inserted and fitted across the large diameter portion 22a and the small diameter portion 22b, and this anchor member 25 is provided with a wedge moving means 26.
The wedge moving means 26 includes a pair of cam pieces 2
7, and a cam groove 28 formed in the wedge member 24 so as to engage with the cam piece 27. The cam piece 27 is a parallel steeply sloped portion 27 that extends obliquely outward from the spindle A side of the anchor member 25.
a, and a gently sloped portion 27b following the outer steeply sloped portion 27a.
The cam groove 28 is formed with a gently sloped part 28b that engages with the gently sloped part 27b of the cam piece 27, and a steeply sloped part 28a that engages with the inner steeply sloped part 27a. Then, when the anchor member 25 is moved toward the spindle A side, the cam piece 27 and the gently inclined parts 27b and 28b of the cam groove 28 are engaged, and the wedge member 24 is moved radially outward, and the clamp recess 19 of the bar body 1 is moved. The anchor member 25 is protrudingly engaged with the bar body 1 to clamp the bar body 1, and the anchor member 25 is
When moving to the side, the cam piece 27 and the steeply inclined parts 27a and 28a of the cam groove 28 engage with each other, and the wedge member 2
4 moves radially inward and leaves the clamp recess 19 to release the clamp on the bar body 1. Further, an arm 29 is provided protruding from a part of the anchor member 25 toward the bar body side, and an outward-opening inclined serration 29b is carved on a surface 29a formed parallel to the axis of the arm 29.
A serration piece 30 is engaged with this serration 29b and movably supported by the adapter 20 by means not shown, and when the anchor member 25 is clamped, it moves radially outward as shown in the figure and stops the stopper 6. It moves radially outward to lock, and when the anchor member 25 is not clamped, it moves radially inward to release the lock of the stopper 6.

On the other hand, the small diameter part 22b and the large diameter part 22c of the inner hole 22
An actuating member 31 coupled to the anchor member 25 is inserted across the two, and is biased in the clamping direction by a disc spring 32 interposed between the actuating member 31 and the large diameter portion 22c. . This operating member 3
1 and a common inner hole 3 formed in the anchor member 25
A draw bar 34 is housed within the draw bar 3, which comes into contact with the end surface of the actuating rod 3 during clamping and locks the actuating rod 3 from moving in the axial direction. The drawbar 34 has a connection passage 3 that connects the coolant passage 14 to a coolant supply source (not shown).
5 is provided.

Next, the effect will be explained.

When the bar body 1 is clamped, when the actuating member 31 is pressed and moved via the operating member B, the steeply inclined part 27a of the cam piece 27 engages with the steeply inclined part 28a of the cam groove 28, causing the wedge member 24 to move radially inward. , and the wedge member 24 can be pulled into the square hole 33. Therefore, the engagement recess 18 of the bar body 1 is engaged with the engagement protrusion 21 of the adapter 20, and the pressing of the operating member B is released. Then, the anchor member 25 is biased by the disc spring 32 and moves toward the spindle A side via the actuating member 31, and the gently inclined portion 2 of the cam piece 27
7b engages with the gently inclined portion 28b of the cam groove 28 to move the wedge member 24 radially outward, and protrudes into engagement with the clamp recess 19 to clamp the bar body 1. At the same time, arm 29 has serration piece 30
is moved radially outward, and the stopper 6 is moved radially outward and locked. This releases the locking of the actuating rod 3 by the stopper 6. Therefore, the actuating rod 3 is urged toward the adapter 20 by the disk spring 5, but is stopped by the draw bar 34.

When compensating for wear on cutter 11, drawbar 3
4 is moved to the side facing the bar body by means not shown in accordance with the amount of wear. As a result, the actuating rod 3 is urged by the disc spring and moves following the draw bar 34. The wedge-shaped concave surface 8 therefore moves and deforms the cartridge 9 through the pin 12 to bend it away from the slot 10, displacing the tip 11 radially outwards and compensating for wear.

When releasing the clamp of the bar body 1, the operating member B
When the actuating member 31 is pressed and moved through the bar body 1, the wedge member 25 moves radially inward and disengages from the clamp recess 19, releasing the clamp on the bar body 1, as described above. At the same time, the bar 29 moves the serration piece 30 radially inward and releases the aforementioned stopper 6. Therefore, the stopper 6 is biased by the disc spring 7 and moves radially inward to lock the actuating rod 3. Then, the bar body 1 is removed from the adapter 20.

[Summary] As explained above, according to the present invention, a tool holder with a simple structure and a wear compensation means can be detachably attached to the spindle of a processing machine.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a tool holder in a clamped state showing one embodiment of the present invention, and FIG. 2 is a sectional view taken along the line - in FIG. 1... Boring bar body, 3... Operating rod, 5, 7, 32... Belleville spring, 6... Stopper,
8... Wedge-shaped concave surface, 9... Bending cartridge, 11... Chip, 18... Engaging recess, 1
9... Clamp recess, 20... Adapter, 21...
...Engaging protrusion, 24... Wedge member, 25... Anchor member, 26... Wedge moving means, 27... Cam piece, 28... Cam groove, 29... Arm, 3
0... Serration piece, 34... Drawbar.

Claims (1)

[Scope of utility model registration request] The tool holder includes an engaging recess in the engaging protrusion of the adapter, an actuating rod that moves in one axial direction to displace the tip of the bending cartridge radially outward, and the actuating rod moves in the axial direction. A spring that biases the tool holder, a stopper that moves radially inward to lock the movement of the actuating rod in the axial direction when the tool holder is not clamped, and a spring that biases the stopper in the locking direction. , a wedge member protrudingly engaged with a radial recess formed in the engagement recess of the tool holder to clamp the tool holder; a drawbar abutting and locking the actuating rod; a cylindrical anchor member having a wedge moving means inserted therethrough and moving the wedge member in a radial direction, the anchor member being moved to a side opposite the tool holder and moving the wedge member radially outward to move the tool holder; a spring that biases the anchor member toward the clamp, and a spring parallel to the axis of the anchor member; a serration piece that engages with an outwardly opening inclined serration formed on a flat surface and moves radially outward when the anchor member is clamped to release the locking of the operating rod by the stopper of the tool holder; A quick-change actuator characterized by: