JPH0351529B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine tool equipped with a tool changer, particularly a numerically controlled lathe, in which tools and chuck pawls in a tool post are automatically exchanged as needed from a tool magazine provided at the rear. This invention relates to a numerically controlled lathe with a changing device.

Conventionally, in tool machines, especially turning machine tools equipped with automatic tool and chuck pawl exchange devices, separate from the tool storage magazine of the tool rest, a magazine is prepared to replace multiple chuck pawls depending on the shape and dimensions of the workpiece. A chuck pawl storage magazine is provided independently, and therefore a tool changing device for attaching the tool to the tool post and a pawl changing device for attaching the chuck pawl to the chuck are provided separately. was common.

In addition, there are tools for the turret and multiple chuck pawls that are stored in the same magazine for dual use, but in this case, the tools and chuck pawls are stored together, which is cumbersome, and the operator can choose This method has disadvantages in that it takes time to set the tool or claw, and at the same time, it is easy to make mistakes.

The present invention was made in view of the above circumstances,
A tool and chuck pawl storage magazine (hereinafter referred to as a tool magazine) is provided in which the chuck pawls can be regularly arranged and stored together with the tools on the tool post. (Hereinafter, referred to as ATC.) ←→It is transferred to the tool rest, and the chuck claw is the tool magazine ←→
A tool changing device and a chuck pawl changing device, which are transferred as ATC←→turret←→chuck, are combined via the turret. It is an object of the present invention to provide a numerically controlled lathe with an automatic chuck pawl exchange device and tools that can be exchanged only in orthogonal directions.

In order to achieve the above object, the present invention includes a chuck that can automatically and removably attach a chuck claw to the end of a rotatably supported main shaft, and a chuck that is mounted on a base so as to be movable relative to the chuck. A turret,
A turret provided on the tool post and rotatable and indexable around an axis parallel to the spindle axis, and a mounting provided in a radial direction on each indexing surface of the turret for mounting an inner diameter tool, an outer diameter tool, and a chuck pawl. and a tool magazine provided at a base end facing the main shaft, rotatably indexable around an axis parallel to the main shaft axis, and provided with a mounting body for mounting the tools and chuck pawls radially on the outer peripheral surface. and an automatic tool changer comprising grippers corresponding to the mounting portion of the turret and the mounting body of the tool magazine, the grippers being moved parallel and perpendicular to the spindle axis, and each gripper rotating. The chuck pawls are exchanged between the tool magazine and the chuck via the automatic tool changer and the turret, and the tools and chuck pawls are exchanged between the turret and the tool magazine via the automatic tool changer. The present invention is a numerically controlled lathe equipped with an automatic tool and chuck pawl changer, which is characterized in that it can be installed and replaced.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front view showing the entire lathe with an automatic tool and chuck pawl changing device. In FIG. 1, a rotatable main shaft 3 having a chuck 4 is mounted on a base 2 of an apparatus main body 1, a tailstock 5 movable in the axial direction (Z direction) with respect to the main shaft 3, and a A tool rest 6 that is movable in the direction perpendicular thereto (X direction) and a tool magazine 7 that can be rotated and indexed.
An automatic tool changer (ATC) 8 movable between the tool magazine 7 and the tool rest 6 is provided.

The tool rest 6, tool magazine 7, and ATC 8 will be explained in detail in FIGS. 2 to 10. FIG. 2 is a rear side view in the direction of the arrow in FIG. 1. First, inclined sliding surfaces 9 and 9A are provided on the base 2. A saddle 10 is placed across these two sliding surfaces 9 and 9A, and the saddle 10 is mounted on the main shaft 3.
It is possible to reciprocate and slide in the Z direction (Fig. 1) in a direction parallel to the axis of the cylinder. A cross slide 11 is placed on the saddle 10, and this cross slide 11
is capable of reciprocating sliding in the X direction, which is the direction crossing the axis of the main shaft 3. A tool rest 6 is mounted on the cross slide 11, and a cylindrical turret 12 is provided on the tool rest 6 so as to be rotatably indexable. The axis of the rotation axis of the turret 12 is the main shaft 3.
The turret 12 is parallel to the axis of the turret 12, and a driving mechanism for indexing the turret 12 and for clamping/unclamping the turret 12 is built inside the tool rest 6. Turret 12
An inner diameter tool 16, an outer diameter tool 17, or a chuck pawl 18 is attached to the holder. On the other hand, a cylindrical tool magazine 7 is rotatably supported at the other end of the base 2 near the tailstock 5, and the tool magazine 7 is driven by a motor 14 to a drive transmission mechanism 15.
It is designed to be driven through. In FIG. 4, the rotating shaft 28 of the tool magazine 7 is parallel to the axis of the main shaft 3, and on its outer peripheral surface, the inner diameter tools 16 are arranged in the first row, the outer diameter tools 17 are arranged in the second row, and the chuck pawls 18 are arranged in the first row. are removably attached to the third row in a radial manner. The inner diameter tool 16 is attached via an adapter.

A drum 29 is attached to the rotating shaft 28,
Mounting bodies 30A, 30B, and 30C are radially erected on the outer peripheral surface of the drum 29 in three vertical strips from one end to the other end. These attachments 3
Inner diameter tool 1 is installed in this order for 0A, 30B, and 30C.
6. The outer diameter tool 17 and the chuck claw 18 are removably attached. Each attached body 30A, 30B, 3
Since all 0Cs have the same structure, one mounting body 30C
I will only explain about. In FIGS. 4 and 5, a mounting body 30C (or 30A or 30B) consisting of a flange portion 31 and a cylindrical engagement protrusion 32,
It is fixed to the drum 29 with bolts 33. A hole 34 is bored inside the engagement protrusion 32 of the mounting body 30C in a direction perpendicular to the axis of the protrusion 32, and the hole 34 opens on the outer peripheral surface of the engagement protrusion 32. The opening 35 of the hole 34 has a slightly smaller diameter than the hole 34 and is formed with a tapered inner surface, and a steel ball 36 having a larger diameter than the opening 35 is inserted inside the opening 35. ing. Inside the hole 34, that is, the steel ball 36
A coiled spring 37 is interposed between the hole 34 and the bottom surface of the hole 34, and the steel ball 36 is always urged toward the opening 35 by the spring 37, so that a part of the spherical surface is pushed away from the opening 35. It stands out. An engagement hole 39 is formed in the chuck claw 18, and the chuck claw 18 is attached to the engagement protrusion 32 through the engagement hole 59. As mentioned above, the steel ball 36 is biased by the spring 37 and presses the inner peripheral surface of the engagement hole 59, and the chuck pawl 18 presses against the mounting portion 30 of the drum 29.
It is held in C.

Next, as shown in FIGS. 2 and 3, an ATC 8 is attached to the other end of the base 2.
8 is composed of a fixed part 19 and a movable part 20 (FIG. 3).

The fixed portion 19 is fixed to a bracket 15A on the base 2, and a feed screw 19A is rotatably supported by the fixed portion 19 via a support member or the like. The feed screw 19A is rotated by a motor 19B provided on the fixed portion 19 via pulleys 19d, 19e, a belt 19f, etc. The feed screw 19A is screwed into a nut 19c, and the nut 19c is fixed to a slider 20B that is supported by the fixed portion 19 via a linear motion bearing 20A so as to be slidable in the Za direction. This slider 20B serves as a base for the movable section 20. The slider 20B is connected to the Za
A columnar arm 23 is provided upright that is slidable in the direction Xa, which is perpendicular to the Xa direction.
0D is formed. A motor 23A is provided on the side surface of the arm 23, and a pinion 23B that meshes with the rack 20D is attached to the output shaft of the motor 23A.
is installed. A tool carrier 25 that is substantially parallel to the feed screw 19A is rotatably provided at the tip of the arm 23, and the tool carrier 25 is rotated by a motor 24 via a gear or the like.

A grip 26 and a grip 27 for gripping a tool or a chuck are attached to the tool carrier 25, respectively, and both grips 26 and 27 can be opened and closed.

As shown in FIGS. 6 and 7, the turret 12 is attached to the turret 6 via a central shaft 38, and an inner diameter tool 16, Twelve mounting portions 39 or an arbitrary number of mounting portions 39 are provided on which the outer diameter tool 17 and the chuck claw 18 are detachably mounted. The mounting portions 39 all have the same structure. A cylindrical guide portion 45 is provided on the mounting portion 39 to protrude in a direction perpendicular to the central axis 38, and this guide portion 45 has the same diameter as the engagement protrusion 32 on the tool magazine 7. The chuck pawl 18 is tightly attached to the guide portion 45 through an engagement hole 59, and the inside of this attachment portion 39 will be described in detail below.

A vertical hole 41 is bored inside the mounting portion 39 in a direction perpendicular to the shaft 38, and a plunger 42 is slidably inserted into the vertical hole 41.
A lid 43 is screwed into the opening at the lower end of the vertical hole 41, and a coiled spring 44 is interposed between the lid 43 and the plunger 42, so that the plunger 42 is always kept on the outside of the turret 12 in the radial direction. It is biased towards

FIG. 8 is an enlarged sectional view of the mounting part 39,
FIG. 9 is a plan view thereof. An axial through hole 46 is formed in the center of the guide portion 45, and the upper wall of the through hole 46 in the figure has an expanding conical surface 4.
7 is formed, and the lower part of the through hole 46 communicates with the vertical hole 41.

A clamp member 49 having a conical head 48 that can come into contact with the conical surface 47 is loosely inserted into the through hole 46 , and the lower end of the clamp member 49 is screwed and fixed to the plunger 42 . The guide portion 45 is provided with four through holes 50 whose both ends are open to the conical surface 47 and the outer circumferential surface, and these through holes 50 are equally angularly spaced from each other.
As shown in the figure, it is approximately perpendicular to the conical surface 47. This through hole 50 has a stepped portion 51 with a larger diameter on the conical surface 47 side, and a lock pin 52 is slidably inserted into each through hole 50. This lock pin 52 has a large diameter head 53 and a stepped portion 51.
A coiled spring 54 is interposed between the head 5 and the head 5.
The end surface of 3 is always in contact with the outer peripheral surface of the head 48 of the clamp member 49. The clamp member 49 is the tenth
When the lock pin 52 is moved to the lower limit in the figure, the lock pin 52 is displaced diagonally downward in the figure, and the tip of the lock pin 52 protrudes from the through hole 50. The mounting portion 39 has a seating surface 56.
Keys 57 and 58 are provided on both sides of the guide portion 45 in a protruding manner, respectively. Engagement hole 5 of chuck pawl 18
The tip of the lock pin 52 is inserted into the through hole 5 on the wall surface of 9.
An annular groove 60 with a substantially V-shaped cross section is formed which engages when protruding from zero. Furthermore, key grooves 61 and 62 are formed on the end surface of the base to fit with keys 57 and 58, respectively, to restrict rotation of the chuck pawl 18, and grips 26 and 27 of the ATC 8 are formed on the outer periphery of the key grooves 61 and 62 that fit with keys 57 and 58, respectively.
A pair of notches 55 are formed which engage with each other. However, the structure in which the outer diameter tool 17 is fitted into the guide portion 45 is the same as that of the chuck claw 18;
Moreover, since the inner diameter tool 16 is also mounted via an adapter 63 having a structure that is fitted into the guide portion 45 that is exactly the same as the chuck claw 18, the outer diameter tool 17 and the adapter 63 are attached to the guide portion on which the chuck claw 18 is mounted. It can be attached to the section 45 in the same way (FIG. 7). Furthermore, on the outer peripheral surface of the base of the outer diameter tool 17 and the adapter 63, as in the case of the chuck claw,
A pair of notches are respectively formed in which the grips 26 and 27 of the ATC 7 engage. Therefore, for convenience, the engaging hole 59, groove 60, and notch 55 of the chuck pawl will be represented by the same numbers in the outer diameter tool 17 and the adapter 63 as well.

7, the piston 70 slides in the axial direction of the shaft 38 in a predetermined manner and pulls the plunger 42 toward the center (downward in FIG. 8) via the lock rod 67, thereby releasing the chuck pawl 18. It is fastened and fixed to the mounting part 39.

The chuck 4 will be explained in detail in FIGS. 11 to 13.

The chuck 4 is composed of a disc-shaped chuck body 94, a master jaw 95 attached at three equally spaced positions on the end face of the chuck body 94, and chuck pawls 18 respectively locked to the master jaw 95. Chuck body 94 with inner hole 94A formed
is fixed to the main shaft 3 end with a bolt 96.
A drawing tube 97 for feeding pressure oil to the chuck body 94 side is installed inside the main shaft 3, and one end of the drawing tube 97 is connected to a hydraulic mechanism 97A (Fig. 1) at the rear of the main shaft. . A wedge plunger 9 is connected to the tip of the drawing tube 97 via a sealing member (not shown).
8 is installed. The wedge plunger 98 has a flange 99 at one end thereof.
A ring 100 is fitted around the end circumferential surface of 9. A shifter 102 is fixed to the ring 100 by bolts 101, and therefore the wedge plunger 98, ring 100, and shifter 102 operate in conjunction with each other. The shifter 102 is slidably inserted into the inner hole 94A of the chuck body 94, and the shifter 102 is inserted into the inner hole 94A of the chuck body 94.
03 is formed into a disk shape.

Next, the shifter 102 has an inclined groove 1 having a T-shaped cross section.
05 is formed, and the inclined groove 105 is inclined toward the distal end surface of the shifter 102 so as to approach its axis. An engaging portion 106 formed at the lower end of the master holder 95 is slidably fitted into the inclined groove 105, so that the shifter 102 and the master holder 95 operate in conjunction with each other. Note that the three master stations 95 arranged at three equal intervals have the same structure, so one master station will be explained. For example, when the shifter 102 shifts backward (in the direction of arrow P), the master shifter 9
The engaging portion 106 of No. 5 is pulled by the inclined groove and shifts downward, that is, in the axial direction of the chuck 4 (in the direction of arrow Q).

Next, the master jaw 95 and the lock portion 113 to which the chuck pawl 18 is fastened and attached will be explained.
First, the master holder 95 has a fitting hole 1 facing the tool post 6 (right side in FIG. 12) and parallel to the axis of the main shaft 3.
14 is formed, and a trapezoidal portion 111 is provided protruding below the insertion hole 114. master jiyo 9
5 has a through hole 11 perpendicular to the insertion hole 114.
5 is provided through the main shaft 3, one end of which communicates with the insertion hole 114, and the other end opening toward the center of the main shaft 3. A cylindrical lock member 116 is provided in the through hole 115.
is slidably inserted into the through hole 115, and a screw 118 is screwed into the other end of the through hole 115. A spring 119 is interposed between the screw 118 and the locking member 116, and the locking member 116 is always urged toward the insertion hole 114. A locking protrusion 120 is formed on the distal end surface of the locking member 116, and a pin groove 121 of a predetermined length is cut on the side surface of the locking member 116 to restrict its upward movement. This pin groove 121 has a trapezoidal portion 1
The tip of a setscrew 122 screwed onto 11 is loosely inserted so that it can slide into contact. Next, an engaging hook 123 that is inserted into the insertion hole 114 is protruded from the side wall of the chuck claw 18, and an annular groove 110 into which the protrusion 120 is inserted is formed in the middle part of the engaging hook 123. ing. Further, the side wall of the chuck claw 18 has a recess 1 into which the trapezoidal part 111 of the master jaw 95 is fitted.
12 are formed. A through hole 124 is formed inside the chuck pawl 18 and extends from the side of the engagement hole 59 to the annular groove 110 and penetrates in the diagonal direction in the figure. This through hole 124 has a moving pin 126 that presses against the protrusion 120 and slides the locking member 116.
is loosely inserted, and the through hole 124 has a stepped portion 125 whose diameter increases toward the engagement hole 59 side. A brake 127 is fixedly installed at the base end of the moving pin 126 to engage with the stepped portion 125 and restrict the downward movement of the moving pin 126.
A stopper 128 is provided which contacts the movable pin 27 to restrict upward movement of the movable pin 126.

Next, the effect will be explained. In Figure 1,
The procedure for exchanging the chuck pawl 18 between the chuck 4 and the tool magazine 7 via the turret 12 and ATC 8 will be explained. First, three chuck pawls 18 of the same shape are successively transferred from the chuck 4 to the turret 12, and then the turret 12 and the magazine 7 are moved.
The three chuck claws 18 are exchanged one by one via the ATC 8 between the chuck claws 18 and the chuck claws 18.
8 from the turret 12 to the chuck 4 will be explained.

FIG. 13A shows a state in which the chuck pawl 18 is locked to the master shaft 95 of the chuck 4, and the empty mounting portion 39 of the turret 12 is approaching in a direction perpendicular to the axis of the main shaft 3. At this time, the clamp member 49 protrudes from the guide portion 45, and the lock pin 52 is pulled into the through hole 50 by the repulsive force of the spring 54. In FIG.
When the guide part 45 is inserted into the engagement hole 59, the end face of the guide part 45 is connected to the brake 127 and the movable pin 1.
Press 26. Since the tip of the moving pin 126 moves the locking member 116, the protrusion 120 is inserted into the groove 1.
Extruded from 10. At the same time as this movement, the clamp member 49 moves upward in the figure, and the lock pin 52 engages with the groove 60 of the engagement hole 59. Therefore, the chuck pawl 18 is locked to the guide portion 45. When the turret 12 is moved from this state to the right in the figure as shown in FIG. When the extraction of the first chuck pawl 18 is completed, the main shaft 3 rotates and the second chuck pawl 18 is indexed to the extraction position. Turret 1 at the same time
2 indexes a new empty mounting part 39 and moves it to the position A in the same figure.
The third chuck claw 18 is removed. The third consecutive chuck pawl 18 is removed in exactly the same manner. Next, the three chuck pawls 18 on the turret 12 are replaced one by one with the magazine 7 via the ATC 8.

In FIG. 1, the turret 12 is positioned at the tool exchange position on the base 2 (the state shown in FIG. 1) by sliding the tool rest 6 together with the saddle 10 on the sliding surfaces 9, 9A in the Z direction. Thereafter, the turret 12 is indexed and clamped so that the first chuck pawl 18 is at the replacement position. On the other hand, at the same time, the first chuck pawl 18 to be replaced is indexed and clamped on the tool magazine 7.

Next, ATC8 tool carrier 25 (Figure 2)
is moved together with the slider 20B by forward rotation of the feed screw 19A, and the grip 27 is positioned in the Za direction so as to face the chuck pawl 18.
Then, the tool carrier 25 is moved together with the arm 23 by the forward rotation of the pinion 23B, and the grip 27 is positioned in the Xa direction so that it approaches the chuck pawl 18 sufficiently. Close the grip 27 and clamp the chuck claw 18 through the notch 55,
The tool carrier 25 and the arm 23 are separated from the tool magazine 7 by reverse rotation of the pinion 23B (FIG. 3). At this time, the inner wall of the engagement hole 59 of the chuck pawl 18 shown in FIG.

Next, in Fig. 3, the tool carrier 25 is moved to the slider 2.
0B and is moved by reverse rotation of the feed screw 19A so that the other grip 26 faces the chuck pawl 18 at the index position on the turret 12.
Perform positioning in the Za direction. Then, the tool carrier 25 is moved together with the arm 23 by reverse rotation of the pinion 23B, and the grip 26 is positioned in the Xa direction so that it comes sufficiently close to the chuck pawl 18. The grip 26 is closed, the chuck pawl 18 is held through the notch 55, and the tool carrier 25 is separated from the turret 12 together with the arm 23 by forward rotation of the pinion 23B. At this time, the clamp member 49 protrudes from the guide part 45, the lock pin 52 is pulled into the through hole 50 by the repulsive force of the spring 54, and the chuck claw 18 is inserted into the guide part 45.
It comes off and is gripped by the grip 26. The grips 26 and 27 are connected to the turret 12 and the tool magazine 7.
Move the tool carrier 25 to a position where it does not interfere with
Then, the motor 24 rotates the tool carrier 25 through 180 degrees. Then, the chuck pawl 18 from the turret 12 is placed on the tool magazine 7 side, and the chuck pawl 18 from the tool magazine 7
are located on the turret 12 side.

Next, the tool carrier 25 is moved together with the slider 20B by reverse rotation of the feed screw 19A, so that the grip 27 faces the empty guide section 45.
Positioning is performed in the Za direction. Then, the tool carrier 25 is moved together with the arm 23 by the forward rotation of the pinion 23B, and the chuck pawl 18 on the grip 27 is attached to the guide portion 45 of the turret 12 by the movement of the clamp member 49. The grip 27 is opened, the tool carrier 25 is moved away from the turret 12, and the turret 12 is rotated to index the second chuck pawl 18 to the replacement position.

Subsequently, the tool carrier 25 is moved to bring the grip 27 sufficiently close to the chuck pawl 18. Then close the grip 27 and insert the second chuck claw 1.
8 from the turret 12. At this time, the chuck claws 18 from the chuck 4 are gripped by the grippers 27 and 26, respectively. tool carrier 25
is moved together with the slider 20B by forward rotation of the feed screw 19A, so that the grip 26 faces the empty mounting body 30C of the tool magazine 7. Then, the chuck pawl 18 on the grip 26 is returned to the tool magazine 7, and then the tool magazine 7 is rotated and indexed to the exchange position, and the chuck pawl 18 on the grip 26 is returned to the tool magazine 7.
Pull out the first chuck claw 18.

Subsequently, the tool carrier 25 is rotated so that the grip 27 faces the empty mounting body 30C. Then, the chuck pawl 18 on the grip 27 is returned to the tool magazine 7, and then the tool magazine 7 is rotated and indexed to the replacement position, and the tool magazine 7 is rotated to the replacement position.
Pull out the first chuck claw 18. The following is the procedure for attaching the first chuck pawl 18 to the turret 12, and then attaching the second and third chuck pawls 18 to the turret 1.
Attach it to 2. Finally, the three chuck claws 18 on the turret 12 are attached to the three empty master jaws 95, respectively.

First, the chuck pawl 18 is positioned in front of the master holder 95 to be installed on the chuck 4, and then the turret 6 is slowly advanced and the engaging hook 123 of the chuck pawl 18 is inserted into the insertion hole 114 of the master holder 95 ( (Status shown in Figure 13 C). The engaging hook 123 comes into contact with the lock protrusion 120 protruding into the insertion hole 114 while slidingly contacting the inner wall of the insertion hole 114 and moving forward. When the engagement hook 123 continues to move forward while contacting the lock protrusion 120, the engagement hook 123 resists the biasing force of the spring 119 and closes the lock protrusion 12.
0 is inserted into the fitting hole 114 while pressing down (Fig. 14, imaginary line).

When the engaging hook 123 is completely inserted into the fitting hole 114 in this way, the top 129 of the lock protrusion 120
is located on the bottom surface 130 of the moving pin 126 that is loosely fitted into the through hole 124 inside the engaging hook 123. However, since the moving pin 126 is prevented from moving by the engagement between the brake element 127 and the top surface of the guide portion 45 of the mounting portion 39, it will not move upward due to the biasing force of the spring 119 (Figure B). .

After the engaging hook 123 is completely inserted into the fitting hole 114, the guide portion 45 of the mounting portion 39 is inserted into the engaging hole 5 of the chuck claw 18 by the predetermined method described above.
When the spring 119 is removed from the lock member 9, the compressed spring 119 in FIG. Accordingly, the lock protrusion 120 moves upward, and the moving pin 126 also moves upward. In this way, the lock protrusion 120 protrudes into the through hole 124 of the chuck pawl 18 (Figure A), and the through hole 124
, and the chuck pawl 18 is fixed to the master jaw 95. Incidentally, the upward movement of the movable pin 126 is restricted by a stopper 128 at a certain location.

As explained above, according to this invention,
Since the tool magazine stores the tools and the chuck pawl at the same time, there is no need to provide a separate storage for the chuck pawl, and the device can be made compact.

In the tool magazine, internal tools, external tools, and chuck claws are regularly arranged radially in three vertical rows in the axial direction of the side of the drum, allowing operators to easily select and set tools in a short time. This can improve work efficiency.

The tool changing device and the chuck pawl changing device are arranged so that the tools in the tool post are transferred to the tool magazine←→ATC←→turret, and the chuck claws on the chuck are transferred to the tool magazine←→ATC←→turret←→chuck. Since it is shared via the turret, the ATC is simplified, and the tools and chuck claws on the turret can be replaced, improving work efficiency and making it easy to maintain the device.

The method of inserting and extracting tools and chuck pawls can always be performed in the radial direction of the turret, that is, in the direction perpendicular to the axis of the main shaft, regardless of the type of tools and chuck pawls.
The ATC operation can be simplified, and the time required to replace tools and chuck pawls can be shortened.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a plan view of a numerically controlled lathe with an automatic tool and chuck pawl changer; FIG. 2 is a side view of the invention; and FIG. 3 is a front view of the main parts of the invention. Figure 4 is a partially cutaway view of the tool magazine, Figure 5 is an enlarged sectional view of the attachment of the tool magazine, Figure 6 is an enlarged side view of the turret, Figure 7 is a cross-sectional view of Figure 6, and Figure 7 is a cross-sectional view of the tool magazine. Figure 8 is a partial sectional view of the turret mounting part, Figure 9 is a front view as seen from the arrow in Figure 8,
Fig. 10 is an enlarged sectional view of the guide part, Fig. 11 is an enlarged front view of the chuck, and Fig. 12 is the - of Fig. 11.
The sectional views and FIGS. 13A to 13C are diagrams showing the order in which the chuck claw is removed from the master jacket and attached to the master jacket. 1... Lathe body, 2... Base, 3... Main spindle,
4...chuck, 6...turret, 7...tool magazine, 8...ATC, 9,9A...slanted sliding surface,
12...turret, 16...inner diameter tool, 17...
...Outer diameter tool, 18...Chuck claw, 26, 27
...Grip, 30A, 30B, 30C... Mounting body, 39... Mounting part, 95... Master station.

Claims (1)

[Claims] 1. A main shaft rotatably supported, a chuck attached to the end of the main shaft and capable of automatically attaching and detaching a chuck pawl, a tool rest mounted on a base so as to be movable relative to the chuck, and Installed on the turret,
a turret that can be rotated and indexed around an axis parallel to the spindle axis; a mounting portion provided in a radial direction on each indexing surface of the turret to which an inner diameter tool, an outer diameter tool, and a chuck pawl are attached; A tool magazine provided at opposing base ends, rotatable and indexable around an axis parallel to the spindle axis, and provided with mounting bodies radially on the outer peripheral surface, in which the inner diameter tool, outer diameter tool, and chuck claws are arranged and mounted. and a gripper corresponding to the mounting portion of the turret and the mounting body of the tool magazine, the grippers are moved parallel and perpendicular to the axis of the main shaft, and the grippers are rotated so that the position of each gripper can be exchanged. The chuck pawl is installed and replaced between the tool magazine and the chuck via the automatic tool changer and the turret, and between the turret and the tool magazine via the automatic tool changer. A numerically controlled lathe equipped with an automatic tool and chuck pawl exchange device, characterized in that tools and chuck pawls are installed and replaced.