JP2022101767A - Machine tool - Google Patents

Abstract

To provide a machine tool that can be configured more simply.SOLUTION: A machine tool 1 comprises: a second main spindle 21 as one example of main spindles that rotate while holding a work-piece W; a tool moving mechanism 40 that has a slide base 41Y that supports a tool unit 50 that machines the work-piece W and moves the slide base 41Y; and an unloader device 60, mounted on the slide base 41Y movably together with the slide base 41Y, which receives the work-piece W from the second main spindle 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a machine tool.

For example, the machine tool described in Patent Document 1 has a spindle that rotates while gripping the work, a work discharge member inserted from the back surface side of the spindle that grips the work, and a work that pushes the work toward the tip end side of the spindle. It includes a work discharge servomotor and conversion mechanism that moves the discharge member, and a loader unit that receives the work from the spindle, grips it, and drops it onto the work conveyor.

Japanese Unexamined Patent Publication No. 2018-62009

In the configuration described in Patent Document 1, in order to make the loader unit movable with respect to the spindle, a new moving mechanism is required, and the configuration becomes complicated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a machine tool capable of realizing a simpler configuration.

In order to achieve the above object, the machine tool according to the present invention has a spindle that rotates while gripping the work, and a slide table that supports the tool unit that processes the work, and is a tool moving mechanism that moves the slide table. And an unloader device that is movably attached to the slide table together with the slide table and receives the work from the spindle.

According to the present invention, a simpler configuration can be realized.

It is a front view of the machine tool which concerns on one Embodiment of this invention. It is a side view of the machine tool which concerns on one Embodiment of this invention. It is a front view of the work catcher and the 2nd spindle unit in the deployed state which concerns on one Embodiment of this invention. (A) according to one embodiment of the present invention is a plan view of a work catcher in a retracted state, and (b) is a front view of a work catcher in a retracted state. (A) to (c) according to one embodiment of the present invention are schematic views showing the operation of the hand portion when the work is re-grabbed. It is a flowchart which shows the procedure of the processing process which concerns on one Embodiment of this invention. It is a sub-flow chart which shows the procedure of the work receiving process which concerns on one Embodiment of this invention.

Hereinafter, the machine tool according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the machine tool 1 is an NC (Numerical Control) lathe. The machine tool 1 includes a bed S which is a base of the entire machine tool 1, a first spindle unit 10 having a first spindle 11, a second spindle unit 20 having a second spindle 21, and a first spindle moving mechanism 15. The second spindle moving mechanism 25, the tool moving mechanism 40, the tool unit 50, the unloader device 60, the work catcher 70, the work conveyor 80, and the control unit 300 are provided.
In the following, the axial direction along the rotation axis of the first spindle 11 and the second spindle 21 is defined as the Z-axis direction, the height direction orthogonal to the Z-axis direction is defined as the Y-axis direction, and the Y-axis direction and the Z-axis are defined. The direction orthogonal to the direction is defined as the X-axis direction.

As shown in FIG. 1, the first spindle unit 10 rotates while gripping the work W. Specifically, the first spindle unit 10 includes a first spindle 11 and a first headstock 12 that rotatably supports the first spindle 11. The first spindle 11 grips one end of the work W. The work rotation motor (not shown) for rotating the first spindle 11 is built in the first headstock 12.
The first spindle moving mechanism 15 moves the first spindle unit 10 in the Z-axis direction.

The second spindle unit 20 is provided at a position facing the first spindle unit 10 in the Z-axis direction. The second spindle unit 20 includes a second spindle 21 that grips the other end of the work W, and a second spindle 22 that rotatably supports the second spindle 21. The second headstock 22 has a built-in work rotation motor (not shown) for rotating the second headstock 21.
The second spindle moving mechanism 25 moves the second spindle unit 20 in the Z-axis direction.

As shown in FIG. 2, the tool moving mechanism 40 moves the tool unit 50 for machining the work W in the X-axis direction, the Y-axis direction, and the Z-axis direction. The tool moving mechanism 40 includes a slide table 41X, 41Y, 41Z, a Z-axis moving portion 42Z for moving the slide table 41X, 41Y, 41Z and the tool unit 50 in the Z-axis direction, a slide table 41X, 41Y, and a tool unit 50. It includes an X-axis moving portion 42X that moves in the X-axis direction, and a Y-axis moving portion 42Y that moves the slide base 41Y and the tool unit 50 in the Y-axis direction.

The tool unit 50 is a tool spindle that rotates the tool 51. The tool unit 50 is supported by the slide base 41Y. The tool unit 50 includes a tool 51 and a tool support portion 52 that supports the tool 51. The tool support portion 52 supports the tool 51 so as to be rotatable around the axis. The tool 51 is a rotary drill and is rotated by receiving a rotational force from a tool rotation drive source. Further, the tool support portion 52 is configured to be rotatable with respect to the slide base 41Y in the B-axis direction, which is the rotation direction centered on the rotation axis along the Y-axis direction.
The tool unit 50 is not limited to the rotary drill, and may be provided with other tools such as a cutting tool.

The first spindle moving mechanism 15, the second spindle moving mechanism 25, the X-axis moving section 42X, the Y-axis moving section 42Y, and the Z-axis moving section 42Z each have a motor, a ball screw, and a nut, and exert a rotational force on the motor. By converting it into a linear motion with a ball screw and a nut, the corresponding first spindle unit 10, the second spindle unit 20, and the slide base 41X, 41Y, 41Z can be linearly moved.

As shown in FIG. 2, the unloader device 60 is fixed to the slide table 41Y of the tool moving mechanism 40, and moves in the X-axis direction, the Y-axis direction, and the Z-axis direction together with the slide table 41Y. The unloader device 60 receives the work W gripped by the second spindle 21 (see FIG. 1) from the second spindle 21, and delivers the received work W to the work catcher 70.
As shown in FIG. 1, the unloader device 60 is provided at a position different from the tool unit 50 in the Z-axis direction, for example, a position closer to the second main shaft 21 than the tool unit 50, and is independent of the slide base 41Y. The hand portion 61, which will be described later, is configured to be movable in the Y-axis direction.

Specifically, as shown in FIG. 2, the unloader device 60 includes a hand unit 61, a drive unit 62, a slider 63, and a hand support unit 64.
The hand portion 61 is a portion for gripping the work W, and switches between a gripped state in which the work W is gripped and a gripped state in which the gripped work W is released. The hand support portion 64 is located between the slider 63 and the hand portion 61. The hand support portion 64 supports the hand portion 61 at a position separated from the tool unit 50 by an offset distance Os in the X-axis direction. By shifting the hand portion 61 and the tool unit 50 by the offset distance Os in the X-axis direction, the work W comes into contact with the tool unit 50 when the hand portion 61 re-grasps the work W supported by the second main shaft 21. Is avoided. The slider 63 is configured to be movable in the Y-axis direction along the rail 41R provided on the slide base 41Y.

The drive unit 62 moves the slider 63 together with the hand unit 61 and the hand support unit 64 in the Y-axis direction. The drive unit 62 is a fluid cylinder, for example, an air cylinder. The drive unit 62 is not limited to an air cylinder, and may be a hydraulic cylinder.
Specifically, the drive unit 62 includes a cylinder unit 62a and a drive shaft unit 62b. The cylinder portion 62a is fixed to the slide base 41Y and has a long cylindrical shape in the Y-axis direction. The drive shaft portion 62b goes out from the lower end surface of the cylinder portion 62a and forms a columnar shape extending in the Y-axis direction. A slider 63 is fixed to the lower end of the drive shaft portion 62b. The cylinder portion 62a moves the drive shaft portion 62b together with the hand portion 61, the slider 63, and the hand support portion 64 in the Y-axis direction.

As shown in FIG. 2, the hand unit 61 can be moved between the delivery position P1, the reception position P2, and the standby position P3 by the drive unit 62. The delivery position P1 is located below the second main shaft 21 (see FIG. 3) in the Y-axis direction and at a position facing the work catcher 70. As shown in FIG. 1, the receiving position P2 is at the same height as the work W gripped by the second main shaft 21 in the Y-axis direction. The standby position P3 is located above the second spindle 21. When the hand portion 61 is in the standby position P3, it is avoided that the hand portion 61 obstructs the movement of the first spindle 11 or the second spindle 21, and chips or coolant liquid accompanying the processing of the work W is sent to the hand portion 61. Hard to adhere.

As shown in FIG. 3, the work catcher 70 receives the work W separated from the hand portion 61 and carries it to the work conveyor 80. The work catcher 70 is movably attached to the second spindle unit 20 together with the second spindle unit 20. Specifically, the work catcher 70 includes a drive unit 71, a plate 73, a pair of guide shafts 74, a receiving unit 75, a work guide unit 76, a hinge 77, and a roller unit 78.

The work catcher 70 is configured to be rotatable between the expanded state shown in FIG. 3 and the stored state shown in FIGS. 4 (a) and 4 (b). First, the configuration of the work catcher 70 in the deployed state shown in FIG. 3 will be described.
The receiving section 75 and the work guide section 76 are arranged so as to be continuous between the hand section 61 at the delivery position P1 and the work conveyor 80, and the work W separated from the hand section 61 at the delivery position P1 is a work conveyor due to its own weight. It is tilted so that it slides toward 80. That is, the receiving unit 75 and the work guide unit 76 are inclined downward (in the direction of gravity) as they approach the work conveyor 80 in the Z-axis direction.

The receiving unit 75 is located directly below the hand unit 61 at the delivery position P1. The work guide portion 76 extends between the end of the receiving portion 75 far from the hand portion 61 and the upper surface of the work conveyor 80. The receiving unit 75 is connected to the driving unit 71 via the plate 73. The work guide portion 76 is fixed below the second spindle unit 20 via the fixing portion 79.

The roller portion 78 is rotatably supported on the lower surface side of the receiving portion 75 about a rotation axis extending in the X-axis direction. The roller portion 78 rolls on the upper surface of the work guide portion 76 when the work catcher 70 shifts between the expanded state and the retracted state.

As shown in FIG. 3, the driving unit 71 moves the receiving unit 75 in the Z-axis direction via the plate 73. The drive unit 71 is a fluid cylinder, for example, an air cylinder. The drive unit 71 is not limited to an air cylinder and may be a hydraulic cylinder.
Specifically, the drive unit 71 includes a cylinder unit 71a and a drive shaft unit 71b. The cylinder portion 71a is fixed to the lower part of the second headstock 22 via the fixing portion 79, and forms a long cylinder in the Z-axis direction. The tip portion of the cylinder portion 71a is fixed to the fixing portion 79, and the rear end portion of the cylinder portion 71a is located on the rear side of the second headstock 22. A columnar drive shaft portion 71b extending in the Z-axis direction projects from the tip surface (left side surface in FIG. 3) of the cylinder portion 71a. The cylinder portion 71a moves the drive shaft portion 71b forward and backward in the Z-axis direction. A plate 73 is fixed to the tip of the cylinder portion 71a.

As shown in FIG. 4A, the plate 73 is formed so as to sandwich the receiving portion 75 from the width direction (X-axis direction) thereof. The receiving portion 75 is rotatably provided in the plate 73 with respect to the plate 73 via the hinge 77. The hinge 77 is located on the tip side of each of the plate 73 and the receiving portion 75.

The pair of guide shafts 74 extend in the Z-axis direction, respectively, and are arranged so as to sandwich the drive portion 71, the plate 73, and the receiving portion 75 in the X-axis direction. The pair of guide shafts 74 are fixed to the plate 73 and are movably supported in the Z-axis direction by the fixing portion 79. The pair of guide shafts 74 stabilizes the movement of the plate 73 and the receiving portion 75 in the Z-axis direction.

Next, the operation when the work catcher 70 shifts from the expanded state shown in FIG. 3 to the stored state shown in FIGS. 4A and 4B will be described.
In the deployed state, the drive unit 71 retracts the drive shaft unit 71b to move the receiving unit 75 closer to the cylinder unit 71a via the plate 73. As a result, in the receiving portion 75, the roller portion 78 moves in the Z-axis direction while rolling on the upper surface of the work guide portion 76 and overlaps with the work guide portion 76. At this time, the receiving portion 75 rotates around the hinge 77 in the direction in which the roller portion 78 approaches the work conveyor 80.
As shown in FIG. 4B, when the roller portion 78 reaches the end portion of the work guide portion 76 near the work conveyor 80, the work catcher 70 is in the retracted state. In this retracted state, the receiving portion 75 and the work guide portion 76 overlap in the Y-axis direction below the second spindle unit 20. Therefore, the work catcher 70 becomes compact. Further, since the work catcher 70 is located below the second spindle unit 20, it does not interfere with processing.

When shifting the work catcher 70 from the retracted state to the deployed state, the drive unit 71 moves the receiving unit 75 away from the cylinder unit 71a via the plate 73 by advancing the drive shaft unit 71b. As a result, the receiving portion 75 moves toward the tip end side of the second main shaft 21 while the roller portion 78 rolls on the upper surface of the work guide portion 76, and is in a position continuous with the work guide portion 76 in the Z-axis direction. At this time, in the receiving portion 75, the roller portion 78 rotates about the hinge 77 in the direction away from the work conveyor 80. As a result, the work catcher 70 is in the deployed state.
This is the end of the explanation of the operation of the work catcher 70.

As shown in FIG. 3, the work conveyor 80 discharges the work W carried through the work catcher 70 to the outside of the machine. The work conveyor 80 is fixed to the bed S (see FIG. 1) and is provided below the second headstock 22 and the drive unit 71.
Specifically, the work conveyor 80 includes gears 81 and 82 and a belt 83. The gears 81 and 82 are arranged in the Z-axis direction and are rotationally driven by a motor (not shown). The belt 83 is hung between the gears 81 and 82. The work W installed on the upper surface of the belt 83 is carried out of the machine by the rotational drive of the gears 81 and 82. The upper surface of the belt 83 is located so as to face the lower end of the work guide portion 76 in the deployed state.

The control unit 300 includes a first spindle unit 10, a second spindle unit 20, a first spindle moving mechanism 15, a second spindle moving mechanism 25, a tool moving mechanism 40, a tool unit 50, an unloader device 60, a work catcher 70, and a work conveyor. Control 80. The control unit 300 includes, for example, a CPU (Central Processing Unit) (not shown), a ROM (Read Only Memory) for storing a program defining a processing procedure by the CPU, and the like.

Next, the machining process by the control unit 300 will be described with reference to the flowchart of FIG. The control unit 300 executes this machining process according to the NC program created in advance. At the start of this processing, the hand portion 61 is present at the standby position P3, and the work catcher 70 is in the retracted state.

First, the control unit 300 processes the front surface side (first end portion side) of the work W gripped by the first spindle unit 10 (S101). For example, in the control unit 300, the first spindle moving mechanism 15 is in a state where the first spindle 11 that grips the work W is rotated, and the tip of a bite mounted on a turret (not shown) is in contact with the outer peripheral surface of the work W. The work W is sent in the Z-axis direction via. As a result, the outer diameter of the work W is cut. Further, for example, the control unit 300 rotates the tool 51 in a state where the shaft rotation of the first spindle 11 that grips the work W is stopped, and drills the work W.

Next, the control unit 300 moves the second spindle unit 20 to a position facing the first spindle 11 in the Z-axis direction via the second spindle moving mechanism 25, and the first spindle unit 10 to the second spindle unit 20. Hand over the work W to (S102). Then, the control unit 300 processes the back surface side (second end portion side) of the work W gripped by the second spindle unit 20 (S103). The processing method in step S103 is the same as the processing method in step S101.

Next, the control unit 300 receives the work W from the second spindle unit 20 via the unloader device 60 (S104).
The work receiving process according to step S104 will be described with reference to the sub-flow chart of FIG. 7 and FIG.
The control unit 300 moves the slide base 41Y together with the unloader device 60 via the tool moving mechanism 40, and positions the hand unit 61 above the work W gripped by the second spindle 21 (S104a).

Next, the control unit 300 moves the hand unit 61 from the standby position P3 to the receiving position P2 via the unloader device 60, as shown by the arrow J1 in FIG. 5A, and the work W is moved by the hand unit 61. It is gripped (S104b). By the processing of steps S104c and S104d after this step S104b, the hand portion 61 re-grasps the work W supported by the second main shaft 21.
Specifically, the control unit 300 moves the hand unit 61 in the direction away from the second main shaft 21 in the Z-axis direction via the tool moving mechanism 40, as shown by the arrow J2 in FIG. 5 (a). 2 The work W is pulled out halfway from the spindle 21 (S104c). When the work W is pulled out, the state in which the work W of the second spindle 21 is gripped is released. Further, at this time, the hand portion 61 moves by the distance that the central portion of the work W is exposed to the outside from the second main shaft 21.

Next, the control unit 300 switches the hand unit 61 to the grip release state, and then moves the hand unit 61 in the Z-axis direction via the tool moving mechanism 40 as shown by the arrow J3 in FIG. 5 (b). It is moved in a direction approaching the second spindle 21, and the central portion of the work W is gripped by the hand portion 61 (S104d). By the processing of steps S104c and S104d, the hand portion 61 re-grasps the work W, so that the hand portion 61 can stably grip and carry the work W.

Then, the control unit 300 moves the hand unit 61 in the direction away from the second main shaft 21 in the Z-axis direction via the tool moving mechanism 40, as shown by the arrow J4 in FIG. As shown in c), the entire area of the work W is pulled out from the second main shaft 21 by the hand unit 61 (S104e), the work receiving process according to step S104 is completed, and the process proceeds to step S105 of FIG.
As shown in FIG. 2, since the hand portion 61 is offset from the tool unit 50 by an offset distance Os in the X-axis direction, the work W gripped by the hand portion 61 comes into contact with the tool unit 50 in this step S104e. Is suppressed.

As shown in FIG. 6, the control unit 300 shifts the work catcher 70 from the stored state to the expanded state (S105).
Next, the control unit 300 moves the hand unit 61 from the receiving position P2 to the delivery position P1 via the unloader device 60, and causes the hand unit 61 holding the work W to face the receiving unit 75 of the work catcher 70. S106). Then, the control unit 300 switches the hand unit 61 that grips the work W from the gripping state to the gripping release state, and delivers the work W from the hand unit 61 to the receiving unit 75 (S107). As a result, the work W is carried to the work conveyor 80 along the receiving unit 75 and the work guide unit 76. When the work W reaches the work conveyor 80, the control unit 300 returns the work catcher 70 from the expanded state to the stored state (S108), and ends the machining process.
The above-mentioned processing is repeated for each processing of the work W.

(effect)
According to the above-described embodiment, the following effects are obtained.
(1) The machine tool 1 has a second spindle 21 which is an example of a spindle that rotates while gripping the work W, and a slide table 41Y that supports a tool unit 50 for processing the work W, and moves the slide table 41Y. It is provided with a tool moving mechanism 40 for moving the tool, and an unloader device 60 that is movably attached to the slide base 41Y together with the slide base 41Y and receives the work W from the second spindle 21.
According to this configuration, the unloader device 60 is attached to the slide base 41Y and is movably configured together with the slide base 41Y of the tool moving mechanism 40. Therefore, the unloader device 60 can be moved by using the tool moving mechanism 40. Therefore, the number of independent moving mechanisms of the unloader device 60 can be reduced, and a simpler configuration can be realized.

(2) The unloader device 60 includes a hand unit 61 that receives the work W from the second spindle 21. The hand portion 61 is provided at a position different from that of the tool unit 50 in the X-axis direction intersecting the axial direction (Z-axis direction) along the rotation axis of the second main shaft 21.
According to this configuration, the work W gripped by the hand portion 61 is prevented from coming into contact with the tool unit 50, and the moving region of the hand portion 61 gripping the work W in the Z-axis direction can be increased. In particular, when the hand portion 61 replaces the work W supported by the second spindle 21, the work W is prevented from coming into contact with the tool unit 50.

(3) The machine tool 1 includes a work catcher 70 that receives a work W from the unloader device 60. The unloader device 60 includes a drive unit 71 that moves the hand unit 61 in the Y-axis direction intersecting the axial direction (Z-axis direction) of the second main shaft 21. The drive unit 71 faces the work catcher 70 and delivers the work W from the hand unit 61 to the work catcher 70. The delivery position P1, the receiving position P2 for receiving the work W from the second spindle 21, and the receiving position P2. It is moved between the standby positions P3 located on the opposite side of the delivery position P1.
According to this configuration, the hand portion 61 is located at the delivery position P1 facing the work catcher 70 when the work W is delivered to the work catcher 70. As a result, when the hand portion 61 drops the work W onto the work catcher 70 and delivers the work W, the impact due to the drop can be reduced, and the work W or the work catcher 70 is prevented from being damaged. ..
Further, by positioning the hand portion 61 at the standby position P3 during the machining of the work W, it is possible to prevent the hand portion 61 from interfering with the machining.

(4) The machine tool 1 includes a work catcher 70 that receives a work W from an unloader device 60 and delivers it to a work conveyor 80, which is an example of a delivery target. The work catcher 70 deploys a receiving unit 75 that receives the work W separated by the unloader device 60, a work guiding unit 76 that guides the work W received by the receiving unit 75 toward the work conveyor 80, and an unloader device 60. And a drive unit 71, which is an example of a state transition unit that shifts between stored states. When the work catcher 70 is in the deployed state, the receiving unit 75 and the work guiding unit 76 are arranged so as to be continuous from the delivery position P1 where the unloader device 60 is separated from the work W toward the work conveyor 80. When the work catcher 70 is in the retracted state, the receiving unit 75 and the work guide unit 76 are arranged so as to overlap each other.
According to this configuration, the work catcher 70 becomes compact when it is in the retracted state, and it is suppressed that it interferes with the processing of the work W.
Further, when the work catcher 70 is in the deployed state, the work W can be received from the unloader device 60 near the second spindle 21. Therefore, the unloader device 60 can deliver the work W received from the second spindle 21 to the work catcher 70 in the deployed state in a shorter time.

The present disclosure is not limited to the above embodiments and drawings. Changes (including deletion of components) may be made as appropriate without changing the gist of the present disclosure. An example of the modification will be described below.

(Modification example)
In the above embodiment, the machine tool 1 includes a first spindle unit 10 and a second spindle unit 20, but either one of the first spindle unit 10 and the second spindle unit 20 may be omitted.

The work conveyor 80 in the above embodiment may be omitted. In this case, the work catcher 70 may store the processed work W in the work storage box.

In the above embodiment, the unloader device 60 is configured so that the hand portion 61 can move independently in the Y-axis direction, but the hand portion 61 may be configured to be independent and immovable in the Y-axis direction. .. In this case, the drive unit 62 and the slider 63 are omitted.
Further, in the above embodiment, the unloader device 60 re-grasps the work W supported by the second spindle 21, but the work W is not limited to this, and the work W is re-grabbed from the second spindle 21 without re-grabbing the work W. You may pull it out.

In the above embodiment, the work catcher 70 is configured to be migrating between the expanded state and the stored state, but the present invention is not limited to this, and the work catcher 70 may be configured to be non-migratory between the expanded state and the stored state. In this case, the roller portion 78 is omitted, and the receiving portion 75 and the work guide portion 76 are continuously connected to each other in the Z-axis direction.

1 ... Machine tool, 10 ... 1st spindle unit, 11 ... 1st spindle, 12 ... 1st spindle base, 15 ... 1st spindle movement mechanism, 20 ... 2nd spindle unit, 21 ... 2nd spindle, 22 ... 2nd Headstock, 25 ... 2nd spindle moving mechanism, 40 ... Tool moving mechanism, 41R ... Rail, 41X, 41Y, 41Z ... Slide base, 42X ... X-axis moving part, 42Y ... Y-axis moving part, 42Z ... Z-axis moving part , 50 ... Tool unit, 51 ... Tool, 52 ... Tool support part, 60 ... Unloader device, 61 ... Hand part, 62 ... Drive part, 62a ... Cylinder part, 62b ... Drive shaft part, 63 ... Slider, 64 ... Hand support Part, 70 ... Work catcher, 71 ... Drive part, 71a ... Cylinder part, 71b ... Drive shaft part, 73 ... Plate, 74 ... Guide shaft, 75 ... Receiving part, 76 ... Work guide part, 77 ... Hinge, 78 ... Roller Unit, 79 ... Fixed part, 80 ... Work conveyor, 81, 82 ... Gear, 83 ... Belt, 300 ... Control unit, P1 ... Delivery position, P2 ... Receiving position, P3 ... Standby position, S ... Bed, W ... Work, Os ... Offset distance

Claims (4)

A spindle that rotates while gripping the work,
A tool moving mechanism that has a slide table that supports the tool unit that processes the work and moves the slide table,
A unloader device that is movably attached to the slide table together with the slide table and receives the work from the spindle.
Machine Tools. The unloader device includes a hand unit that receives the work from the spindle.
The hand portion is provided at a position different from that of the tool unit in a direction intersecting the axial direction along the rotation axis of the main shaft.
The machine tool according to claim 1. A work catcher that receives the work from the unloader device is provided.
The unloader device includes a drive unit that moves the hand unit in a direction intersecting the axial direction.
The drive unit faces the work catcher and delivers the work from the hand unit to the work catcher, a receiving position for receiving the work from the main shaft, and a receiving position at the receiving position. Move between standby positions located on the opposite side of
The machine tool according to claim 2. A work catcher that receives the work from the unloader device and delivers it to the delivery target is provided.
The work catcher is
A receiving unit that receives the work released by the unloader device, and a receiving unit.
A work guide unit that guides the work received by the receiving unit toward the delivery target, and a work guide unit.
A state transition unit that shifts the unloader device between the expanded state and the stored state is provided.
When the work catcher is in the deployed state, the receiving unit and the work guiding unit are arranged so as to be continuous from a position where the unloader device is separated from the work toward the delivery target.
When the work catcher is in the retracted state, the receiving unit and the work guide unit are arranged so as to overlap each other.
The machine tool according to any one of claims 1 to 3.

Images