JP6828378B2 - Machine tool system - Google Patents

Description

The present invention relates to a machine tool system.

Machine tools for machining workpieces include lathes and machining centers, and such machine tools are each equipped with a dedicated loader for transporting the workpiece to the machining area. In addition, there is a machine tool system that transports a work between a plurality of machine tools and processes the work with each machine tool. In this machine tool system, it is known that a work relay device for relaying workpieces between machine tools is used (see, for example, Patent Document 1). The work relay device has a work mounting table on which the work can be placed and moved, and the loader of each machine tool transfers the work to and from the work mounting table. The work mounting table is driven by a unique drive source such as a conveyor or a shuttle, which is different from a loader such as a motor or an air cylinder.

Japanese Patent No. 5037293

When the work mounting table of the work relay device moves to deliver the work, it is necessary that the work mounting table is moved to a position where the loader can be delivered. Therefore, for example, it is possible to place a sensor on the work relay device and detect the position of the work mounting table by this sensor, but a power supply and wiring for operating the sensor are required, and the work relay device is installed. There is a problem that the cost is increased and the construction period required for installing the work relay device is lengthened.

In view of the above circumstances, the present invention provides a machine tool system capable of easily and reliably detecting the position of the work mounting table, suppressing the installation cost of the work relay device, and shortening the construction period. The purpose is to provide.

The machine tool system according to the present invention includes a first machine tool including a first loader capable of transporting a work, a second machine tool including a second loader capable of transporting a work, a first machine tool and a second machine tool. It is installed between and can mount a work, and both the first loader and the second loader are equipped with a work mounting stand on which the work can be delivered, from the first loader to the second loader, or to the second loader. A machine tool system including a work relay device that relays a work from the first loader to the first loader, and the first loader and the second loader and the work mounting table move to each other to move the first loader and the second loader to each other. Any of the second loaders can deliver the work to the work mounting table, and the first part and the second part, and when the first part is the first arrangement, the second part is in the second arrangement and the first part. A connecting member having a connecting portion for connecting the first portion and the second portion is provided so that the second portion switches to the first arrangement when the portion is in the second arrangement, and the first portion or the second portion is provided. The first arrangement of the above indicates that the work can be delivered to the work mounting table by the first loader or the second loader, and the first loader moves the work to the first arrangement after passing the work to the work mounting table. The second portion is switched from the second arrangement to the first arrangement by contacting a certain first part and switching to the second arrangement, and the second loader is in the first arrangement after receiving the work from the work mounting table. The first portion is switched from the second arrangement to the first arrangement by contacting the second portion and switching to the second arrangement.
The machine tool system according to the present invention includes a first machine tool including a first loader capable of transporting a work, a second machine tool including a second loader capable of transporting a work, a first machine tool and a second machine tool. It is installed between and can mount a work, and both the first loader and the second loader are equipped with a work mounting stand on which the work can be delivered, from the first loader to the second loader, or to the second loader. A machine tool system including a work relay device that relays a work from to a first loader, and the first part and the second part, and when the first part is the first arrangement, the second part is the second arrangement. A communication member having a connecting portion for connecting the first portion and the second portion is provided so that the second portion is switched to the first arrangement when the first portion is in the second arrangement. Alternatively, the first arrangement of the second part indicates that the work can be delivered to the work mounting table by the first loader or the second loader, and the first loader transfers the work to the work mounting table after the work is delivered. By contacting the first part in the first arrangement and switching to the second arrangement, the second part is switched from the second arrangement to the first arrangement. After receiving the work from the work mounting table, the second loader is the second. The first portion is switched from the second arrangement to the first arrangement by contacting the second portion in the first arrangement and switching to the second arrangement.

Further, the work mounting table is movable between the first machine tool side and the second machine tool side, and the first loader positions the work machined by the first machine tool on the first machine tool side. operation and for placing the to Ruwa over click table, after work rest placing the workpiece placed by the first loader is moved to the second machine tool side, a first portion of the first arrangement The operation of switching the second portion from the second arrangement to the first arrangement may be performed by abutting and switching to the second arrangement. Further, the second arrangement of the first part or the second part may indicate that the work cannot be delivered to the work mounting table by the first loader or the second loader. Further, the connecting portion has a seesaw portion that can swing around the horizontal axis, and the first portion and the second portion are connected to both ends of the seesaw portion to move up and down, and one of the upper portions is the first. There may be one arrangement, and either one located on the lower side may be the second arrangement. Further, at least one of the first portion and the second portion may be provided with a locking member that holds the state in the first arrangement or the second arrangement. Further, the first part in the first arrangement can be detected by the first detection unit included in the first loader, and the second part in the first arrangement can be detected by the second detection unit provided in the second loader. There may be. Further, the first portion in the second arrangement may not be detected by the first detection unit, and the second portion in the second arrangement may not be detected by the second detection unit.

According to the present invention, due to the connecting portion of the connecting member, when one of the first portion and the second portion is in the first arrangement, the other is in the second arrangement, so that the position of the first part or the second part By confirming, it is possible to transfer the work between the first loader and the second loader without using an electric signal such as a sensor. As a result, it is not necessary to provide a sensor or the like for detecting the position of the work in the work relay device, so that electrical wiring or the like for connecting to the sensor or the like becomes unnecessary, and it is possible to suppress an increase in the installation cost of the work relay device. Furthermore, the construction period required for installation can be shortened. Further, the first part in the first arrangement indicates that the work can be delivered to the work mounting table by the first loader, and the second part in the first arrangement is the work mounting table by the second loader. Since it indicates that the work can be delivered to, the work can be delivered by the first loader or the second loader by confirming that the first part or the second part is in the first arrangement. You can reliably convey that.

Further, the work mounting table is movable between the first machine tool side and the second machine tool side, and the first loader positions the work machined by the first machine tool on the first machine tool side. operation and for placing the to Ruwa over click table, after work rest placing the workpiece placed by the first loader is moved to the second machine tool side, a first portion of the first arrangement When performing the operation of switching the second part from the second arrangement to the first arrangement by contacting and switching to the second arrangement, the second part is switched to the first arrangement, so that the second part is placed on the work mounting table. It is possible to reliably convey that the work can be received by the second loader. Further, when the second arrangement of the first part or the second part indicates that the work cannot be delivered to the work mounting table by the first loader or the second loader, the first part or the second part is the second arrangement. It is possible to reliably convey to the first loader or the second loader that the work cannot be delivered to the work mounting table. Further, the connecting portion has a seesaw portion that can swing around the horizontal axis, and the first portion and the second portion are connected to both ends of the seesaw portion to move up and down, and one of the upper portions is the first. When one arrangement is made and one of the lower ones is the second arrangement, when either one of the first part and the second part is the first arrangement, the other is surely made the second arrangement. it can. Further, with respect to at least one of the first and second portions, if provided with a locking member for holding the state in which the first arrangement or the second arrangement, one of the first and second portions by a locking member Since the state in which one is the first arrangement is maintained, it is possible to prevent the first arrangement and the second arrangement from being inadvertently changed. Further, the first part in the first arrangement can be detected by the first detection unit included in the first loader, and the second part in the first arrangement can be detected by the second detection unit included in the second loader. In some cases, each of the first or second loaders can reliably detect that the first or second portion is in the first arrangement. If the first part in the second arrangement is not detected by the first detection unit and the second part in the second arrangement is not detected by the second detection unit, the first part or the first part in the second arrangement. It is possible to prevent the two parts from being mistakenly detected by the first detection unit or the second detection unit as being in the first arrangement.

It is a figure which shows an example of the machine tool system which concerns on this embodiment. It is a perspective view which shows an example which looked at the work relay device which concerns on this embodiment from the front side. It is a perspective view which shows an example which saw the work relay device from the back side. It is a top view which shows an example of a work relay device. It is a rear view which shows a part of a work relay device. (A) and (B) are diagrams showing an example of the operation of the moving mechanism. (A) and (B) are diagrams showing an example of the operation of the connecting member. It is the figure which showed the operation of relaying a work, and the 1st loader confirmed the 1st elevating part. It is a figure which shows the state which the 1st loader confirmed the 1st lever. It is a figure which shows the state which the 1st loader confirmed the work mounting stand. It is a figure which shows the state which the 1st loader moved to the upper part of the work mounting table. It is a figure which shows the state which the 1st loader put a work on a work place stand. It is a figure which shows the state which the 1st loader grips the 1st lever. It is a figure which shows the state which the 1st loader moved the 1st lever. It is a figure which shows the state which the 1st loader moved to the 1st elevating part. It is a figure which shows the state which the 1st loader lowered the 1st elevating part, and 2nd loader confirmed the 2nd elevating part. It is a figure which shows the state which the 2nd loader confirmed the work of the work mounting table. It is a figure which shows the state which the 2nd loader gripped the work. It is a figure which shows the state which the 2nd loader grasped a work and was raised. It is a figure which shows the state which the 2nd loader gripped the 2nd lever. It is a figure which shows the state which the 2nd loader moved the 2nd lever. It is a figure which shows the state which the 2nd loader moved to the 2nd elevating part. It is a figure which shows the state which the 2nd loader lowered the 2nd elevating part, and the 1st loader confirmed the 1st elevating part. (A) and (B) are diagrams showing an example of the operation of the moving mechanism according to the modified example. (A) and (B) are diagrams showing a connecting member according to a modified example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to this. Further, in the drawings, in order to explain the embodiment, the scale is appropriately changed and expressed, such as drawing a part in a large or emphasized manner. In each of the following figures, the directions in the figure will be described using the XYZ coordinate system. In this XYZ coordinate system, a plane parallel to the horizontal plane is defined as an XZ plane. An arbitrary direction parallel to the XZ plane is referred to as the Z direction, and a direction orthogonal to the Z direction is referred to as the X direction. Further, the vertical direction perpendicular to the XZ plane is referred to as the Y direction. In each of the X direction, the Y direction, and the Z direction, the direction of the arrow in the drawing is the + direction, and the direction opposite to the direction of the arrow is the − direction.

FIG. 1 is a diagram showing an example of a machine tool system SYS according to the present embodiment. As shown in FIG. 1, the machine tool system SYS includes a first machine tool 10, a second machine tool 20, and a work relay device 30. The first machine tool 10 is, for example, a parallel biaxial lathe, and is arranged so that the front side faces in the + Z direction. The first machine tool 10 has a main body portion 11 and a work mounting portion 12. Further, the first machine tool 10 has a first loader 40. The main body 11 has spindles 15 and 16 and turrets 17 and 18. The spindles 15 and 16 are arranged side by side in the X direction. The spindles 15 and 16 are rotatably supported around an axis parallel to the Z direction. The spindle-side chucks 13 and 14 are arranged at the + Z-side ends of the spindles 15 and 16. A plurality of gripping claws 13a and 14a are provided on the spindle side chucks 13 and 14, respectively. The gripping claws 13a and 14a can hold the work W by moving in the radial direction of the spindles 15 and 16.

The turrets 17 and 18 are arranged on the −X side of the spindle 15 and the + X side of the spindle 16, respectively. Each of the turrets 17 and 18 can be rotated about an axis parallel to the Z direction by a rotation driving device (not shown). A plurality of cutting tools (machining tools) T1 are held on the peripheral surfaces of the turrets 17 and 18. Therefore, the desired cutting tool T1 is selected by rotating the turrets 17 and 18. As the cutting tool T1, a rotary tool such as a drill or an end mill may be used in addition to a cutting tool or the like for cutting the work W. Further, the turrets 17 and 18 can be moved in the X direction and the Z direction by a driving device (not shown).

The work W, which is the processing target of the first machine tool 10, is placed on the work mounting portion 12. As the work mounting portion 12, for example, a fixed base is used, but the work mounting portion 12 is not limited to this, and a conveyor, a rotary type base, or the like may be used.

The first loader 40 includes a loader head 41 and a loader drive unit 42. The first loader 40 conveys the work W between the work mounting portion 12, the spindles 15 and 16, and the work relay device 30. The loader head 41 has a loader chuck 43. The loader chuck 43 grips the work W by a plurality of gripping claws 43a. The loader chuck 43 can rotate, for example, in a posture in which the work W is gripped and oriented in the −Y direction and a posture in which the work W is oriented in the −Z direction (a posture in which the work W is directed to the spindles 15 and 16).

The loader drive unit 42 includes an X drive unit 44, a Z drive unit 45, and a Y drive unit 46. The X drive unit 44 moves the X moving body 44a in the X direction along the guide rail 44b. The −X side end of the guide rail 44b is set above the work mounting portion 12, and the loader head 41 can be connected to the work mounting portion 12. Further, the + X side end portion of the guide rail 44b is arranged above the work relay device 30. As a result, the loader head 41 can be connected to the work relay device 30. The Z drive unit 45 is formed on the X moving body 44a and moves the Z moving body 45a in the Z direction. The Y drive unit 46 is formed on the Z moving body 45a and moves the Y moving body 46a in the vertical direction (Y direction).

The loader head 41 is provided below the Y moving body 46a. The work W gripped by the loader chuck 43 of the loader head 41 is driven by the X drive unit 44, the Z drive unit 45, and the Y drive unit 46, respectively, to synthesize the X direction, the Y direction, the Z direction, or a combination thereof. Transported in the direction.

A first detection unit 47 is arranged on the loader head 41. The first detection unit 47 is, for example, an optical sensor. The first detection unit 47 can detect an object arranged below the loader head 41 by irradiating the detection light downward (in the −Y direction) and detecting the reflected light. The detection result by the first detection unit 47 is transmitted to the first control unit CONT1. The drive of the first loader 40 configured as described above is controlled by the first control unit CONT1.

The second machine tool 20 is arranged side by side in the X direction with respect to the first machine tool 10. The second machine tool 20 according to the present embodiment is a so-called opposed biaxial lathe. The second machine tool 20 has a main body portion 21 and a work mounting portion 22. Further, the second machine tool 20 has a second loader 50. The main body 21 has spindles 25 and 26 and turrets 27 and 28. The spindles 25 and 26 are arranged so as to face each other in the X direction. The spindles 25 and 26 are rotatably supported around an axis parallel to the X direction. The spindle side chucks 23 and 24 are arranged at the + X side end of the spindle 25 and the −X side end of the spindle 26. A plurality of gripping claws 23a and 24a are provided on the spindle side chucks 23 and 24, respectively. The gripping claws 23a and 24a can hold the work W by moving in the radial direction of the spindles 25 and 26.

The turrets 27 and 28 are arranged on the −Z side of the spindle 25 and the −Z side of the spindle 26, respectively. Each of the turrets 27, 28 is rotatable about an axis parallel to the X direction. A plurality of cutting tools (machining tools) (not shown) are held on the peripheral surfaces of the turrets 27 and 28. Therefore, the desired cutting tool is selected by rotating the turrets 27 and 28. As the cutting tool, a rotary tool such as a cutting tool, a drill, or an end mill may be used. Further, the turrets 27 and 28 can be moved in the X direction and the Z direction by a driving device (not shown).

The machined work W machined by the second machine tool 20 is mounted on the work mounting portion 22. As the work mounting portion 22, for example, a fixed base is used, but the work mounting portion 22 is not limited to this, and a conveyor, a rotary type base, or the like may be used.

The second loader 50 includes a loader head 51 and a loader drive unit 52. The second loader 50 conveys the work W between the work relay device 30, the spindles 25 and 26, and the work mounting portion 22. The loader head 51 has a loader chuck 53. The loader chuck 53 grips the work W by a plurality of gripping claws 53a. The loader chuck 53 can move, for example, between a posture in which the work W is gripped and oriented in the −Y direction and a posture in which the work W is oriented in the + X direction or the −X direction (the posture in which the work W is directed to the spindles 25 and 26). is there.

The loader drive unit 52 includes an X drive unit 54, a Z drive unit 55, and a Y drive unit 56. The X drive unit 54 moves the X moving body 54a in the X direction along the guide rail 54b. The −X side end of the guide rail 54b is arranged above the work relay device 30. As a result, the loader head 51 can be connected to the work relay device 30. Further, the + X side end portion of the guide rail 54b is arranged above the work mounting portion 22 of the second machine tool 20. As a result, the loader head 51 can be connected to the work mounting portion 22.

The Z drive unit 55 is formed on the X moving body 54a and moves the Z moving body 55a in the Z direction. The Y drive unit 56 is formed on the Z moving body 55a and moves the Y moving body 56a in the vertical direction (Y direction). The loader head 51 is provided below the Y moving body 56a. The work W gripped by the loader chuck 53 of the loader head 51 is driven by the X drive unit 54, the Z drive unit 55, and the Y drive unit 56, respectively, to synthesize the X direction, the Y direction, the Z direction, or a combination thereof. Transported in the direction.

A second detection unit 57 is arranged on the loader head 51. Like the first detection unit 47, the second detection unit 57 is, for example, an optical sensor. The second detection unit 57 can detect an object arranged below the loader head 51 by irradiating the detection light downward (-Y direction) and detecting the reflected light. The detection result by the second detection unit 57 is transmitted to the second control unit CONT2. The drive of the second loader 50 configured as described above is controlled by the second control unit CONT2.

FIG. 2 is a perspective view showing a case where the work relay device 30 is viewed from the front side. FIG. 3 is a perspective view showing a case where the work relay device 30 is viewed from the back side. FIG. 4 is a plan view of the work relay device 30. FIG. 5 is a rear view of the work relay device 30. The work relay device 30 is installed between the first machine tool 10 and the second machine tool 20 (see FIG. 1), and transfers the work W between the first machine tool 10 and the second machine tool 20. .. As shown in FIGS. 2 to 5, the work relay device 30 includes a frame 31, a work mounting table 32, a moving mechanism 33, and a connecting member 34.

The frame 31 supports the work mounting table 32, the moving mechanism 33, and the connecting member 34. The work mounting table 32 has a work insertion portion 32a. The work insertion portion 32a can be placed by inserting the work W from above. In the present embodiment, two work insertion portions 32a are arranged side by side in the X direction (movement direction), but the present invention is not limited to this, and for example, one or three or more work insertion portions may be provided, or a plurality of works may be provided. The insertion portion 32a may be arranged in the Z direction (direction orthogonal to the moving direction). Further, the work insertion portion 32a is configured to have a recess for inserting the end portion of the work W, but the present invention is not limited to this, and the work insertion portion 32a may have a plate shape on which the work W can be placed.

The work mounting table 32 can move in the X direction between the first position P1 and the second position P2 with the work W mounted. The first position P1 is a position where the first loader 40 can deliver the work W. The second position P2 is a position where the second loader 50 can deliver the work W. The moving mechanism 33 moves the work mounting table 32 in the X direction. The moving mechanism 33 moves the work mounting table 32 by using the force that either one of the first loader 40 and the second loader 50 moves. In the present embodiment, the work mounting table 32 is moved from the first position P1 to the second position P2 in the + X direction (toward the second machine tool 20 side) by using the moving force of the first loader 40. Further, the work mounting table 32 is moved from the second position P2 to the first position P1 in the −X direction (toward the first machine tool 10 side) by using the moving force of the second loader 50.

The moving mechanism 33 has a first lever 61, a second lever 62, a transmission mechanism 63, and a rail 64. The first lever 61 has a disc-shaped member 65 and a connecting member 66. The disk-shaped member 65 can be gripped by the loader chuck 43 (grasping claw 43a) of the first loader 40. The connecting member 66 connects the disc-shaped member 65 and the first rack 71, which will be described later. When the loader chuck 43 of the first loader 40 moves in the X direction while gripping the disc-shaped member 65, the connecting member 66 moves in the X direction integrally with the first loader 40 and the disc-shaped member 65. To do. That is, the first lever 61 is moved in the X direction by the first loader 40.

The second lever 62 has a disc-shaped member 67 and a connecting member 68, similarly to the first lever 61. The disk-shaped member 67 can be gripped by the loader chuck 53 (grasping claw 53a) of the second loader 50. The connecting member 68 connects the disc-shaped member 67 and the second rack 72, which will be described later. When the loader chuck 53 of the second loader 50 moves in the X direction while gripping the disc-shaped member 67, the connecting member 68 moves in the X direction integrally with the second loader 50 and the disc-shaped member 67. To do. That is, the second lever 62 is moved in the X direction by the second loader 50.

The transmission mechanism 63 transmits the movement of the first lever 61 and the second lever 62 in the X direction to the work mounting table 32. The transmission mechanism 63 includes a first rack 71, a second rack 72, a first pinion gear 73, a second pinion gear 74, a first rotating portion 75, a second rotating portion 76, and a transmitting member 77. Have. The rail 64 is supported by the frame 31. The rail 64 is arranged so as to extend linearly in the X direction, and has a groove portion 64a in the X direction on the upper surface. A linear guide 64b (see FIG. 4) that guides the work mounting table 32 in the X direction is arranged in the groove portion 64a.

The first rack 71 has a rectangular plate shape and is connected to the connecting member 66 of the first lever 61. The first rack 71 moves in the X direction integrally with the first lever 61. A plurality of teeth are formed along the X direction on the side 71e (see FIG. 5) at the lower end of the first rack 71. Like the first rack 71, the second rack 72 has a rectangular plate shape and is connected to the connecting member 68 of the second lever 62. The second rack 72 moves in the X direction integrally with the second lever 62. A plurality of teeth are formed on the lower end side 72e (see FIG. 5) of the second rack 72 along the X direction.

The first pinion gear 73 is arranged below the first rack 71 and meshes with the teeth of the first rack 71. The first pinion gear 73 rotates about the Z axis as the first rack 71 moves in the X direction. The second pinion gear 74 is arranged below the second rack 72 and meshes with the teeth of the second rack 72. The second pinion gear 74 rotates about the Z axis as the second rack 72 moves in the X direction.

The first rotating portion 75 is, for example, a sprocket having a plurality of teeth over one circumference of the outer circumference, and is rotatable around the Z axis. The first rotating portion 75 is connected to the first pinion gear 73 via a transmission shaft 78. The first rotating portion 75 rotates around the Z axis as the first pinion gear 73 rotates. The first rotating portion 75 has a diameter larger than that of the first pinion gear 73. Therefore, when the first pinion gear 73 makes one rotation, the first rotation unit 75 rotates one or more rotations. By changing the outer diameters of the first pinion gear 73 and the first rotating portion 75, the amount of rotation of the first rotating portion 75 can be adjusted with respect to one rotation of the first pinion gear 73.

Like the first rotating portion 75, the second rotating portion 76 is, for example, a sprocket having a plurality of teeth over one circumference of the outer circumference, and can rotate around the Z axis. The second rotating portion 76 is connected to the second pinion gear 74 via the transmission shaft 79. The second rotating portion 76 rotates around the Z axis as the second pinion gear 74 rotates. The second rotating portion 76 has a diameter larger than that of the second pinion gear 74. Therefore, when the second pinion gear 74 makes one rotation, the second rotation unit 76 rotates one or more rotations. By changing the outer diameters of the second pinion gear 74 and the second rotating portion 76, the amount of rotation of the second rotating portion 76 can be adjusted with respect to one rotation of the second pinion gear 74. The first rotating portion 75 and the second rotating portion 76 are set to have the same outer diameter, but the outer diameter is not limited to this and may be different.

The transmission member 77 is, for example, an endless chain, which is bridged between the first rotating portion 75 and the second rotating portion 76. The transmission member 77 orbits by the rotation of the first rotating portion 75 or the second rotating portion 76. A work mounting table 32 is connected to a part of the transmission member 77. Therefore, the work mounting table 32 moves in the X direction as the transmission member 77 orbits.

FIG. 6 is a diagram showing an example of the operation of the moving mechanism 33. When the first lever 61 is moved in the + X direction from the state shown in FIG. 6A, the first rack 71 moves in the + X direction due to the movement of the first lever 61, and the first pinion gear 73 is viewed from the −Z side. And rotate it counterclockwise. The rotation of the first pinion gear 73 causes the first rotating portion 75 to rotate to rotate the transmission member 77, and as shown in FIG. 6B, the work mounting table 32 moves in the + X direction. Further, although not shown in FIG. 6, the second rotating portion 76 is rotated by the rotation of the transmission member 77, and the second pinion gear 74 is rotated to move the second rack 72 in the + X direction. By moving the second rack 72, the second lever 62 moves in the + X direction.

Although not shown, when the second lever 62 is moved in the −X direction, the second rack 72 is moved in the −X direction due to the movement of the second lever 62, and the second pinion gear 74 is viewed from the −Z side. Rotate clockwise. The rotation of the second pinion gear 74 causes the second rotating portion 76 to rotate to rotate the transmission member 77, and the work mounting table 32 moves in the −X direction. Further, the first rotating portion 75 is rotated by the rotation of the transmission member 77, and the first pinion gear 73 is rotated to move the first rack 71 in the −X direction. Due to the movement of the first rack 71, the first lever 61 moves in the −X direction, and the state shown in FIG. 6A is obtained.

By moving the first lever 61 in this way, the first rotating portion 75 becomes a driving rotating portion, and the second rotating portion 76 becomes a driven rotating portion that rotates according to the rotation of the first rotating portion 75. On the other hand, by moving the second lever 62, the second rotating unit 76 becomes a driving rotating unit, and the first rotating unit 75 becomes a driven rotating unit that rotates according to the rotation of the second rotating unit 76.

Returning from FIG. 2 to FIG. 5, the connecting member 34 has a first elevating portion 81 as a first portion, a second elevating portion 82 as a second portion, and a connecting portion 83. The first elevating portion 81 has a plate-shaped portion 84 and a rod-shaped portion 85. The plate-shaped portion 84 is formed in a disk shape, for example, and is arranged in a tubular portion 35 provided on the rail 64. The tubular portion 35 is formed in a cylindrical shape and is arranged at the end on the −X side of the rail 64. The plate-shaped portion 84 is arranged along a horizontal plane (XZ plane) and is attached to the upper end of the rod-shaped portion 85. The rod-shaped portion 85 is arranged so as to penetrate the tubular portion 35 in a state of extending downward from the plate-shaped portion 84. The rod-shaped portion 85 moves in the vertical direction (Y direction) integrally with the plate-shaped portion 84. Further, the rod-shaped portion 85 has a locking member 85a (see FIG. 7). The locking member 85a is locked to the tubular portion 35 at a position where the plate-shaped portion 84 is close to the tubular portion 35, and restricts the vertical movement of the rod-shaped portion 85.

The first elevating unit 81 is arranged at a position where the first loader 40 can be connected. With this arrangement, for example, the first loader 40 can be lowered in a state of being in contact with the upper surface of the plate-shaped portion 84, so that the first elevating portion 81 can be pushed down. Further, the first elevating part 81 is arranged on the −X side of the first position P1 of the work mounting table 32. Further, the first elevating part 81 is arranged on the −X side of the first lever 61. As a result, when the work mounting table 32 and the first lever 61 move in the + X direction, they can be prevented from interfering with the first elevating portion 81.

The second elevating portion 82 has a plate-shaped portion 86 and a rod-shaped portion 87, similarly to the first elevating portion 81. The plate-shaped portion 86 is formed in a disk shape, for example, and is arranged in a tubular portion 36 provided on the rail 64. The tubular portion 36 is formed in a cylindrical shape and is arranged at the + X side end portion of the rail 64. The plate-shaped portion 86 is arranged along a horizontal plane (XZ plane) and is attached to the upper end of the rod-shaped portion 85. The rod-shaped portion 87 is arranged so as to penetrate the tubular portion 36 in a state of extending downward from the plate-shaped portion 86. The rod-shaped portion 87 moves in the vertical direction (Y direction) integrally with the plate-shaped portion 86. Further, the rod-shaped portion 87 has a locking member 87a (see FIG. 7). The locking member 87a is locked to the tubular portion 36 at a position where the plate-shaped portion 86 is close to the tubular portion 36, and restricts the vertical movement of the rod-shaped portion 87. For the locking member 87a, for example, a ball plunger or the like is used, and the movement of the rod-shaped portion 87 is restricted by the ball entering the recess provided in the tubular portion 36.

The second elevating unit 82 is arranged at a position where the second loader 50 can be connected. With this arrangement, for example, the second loader 50 can be lowered in a state of being in contact with the upper surface of the plate-shaped portion 86, so that the second elevating portion 82 can be pushed down. Further, the second elevating part 82 is arranged on the + X side of the second position P2 of the work mounting table 32. Further, the second elevating part 82 is arranged on the + X side of the second lever 62. As a result, when the work mounting table 32 and the second lever 62 move in the −X direction, they can be prevented from interfering with the second elevating portion 82.

The connecting portion 83 has a shaft portion 88 and a seesaw portion 89. The shaft portion 88 is fixed to the rail 64 by the shaft fixing portion 88a (see FIG. 7). The seesaw portion 89 has a rod shape extending in the X direction, and a substantially central portion thereof is swingably supported by the shaft portion 88. The seesaw portion 89 swings around an axis in the Z direction, and the first end portion 89a and the second end portion 89b, which are the ends on both sides, can be moved in the vertical direction. A rod-shaped portion 85 of the first elevating portion 81 is rotatably attached to the first end portion 89a on the −X side of the seesaw portion 89. Further, a rod-shaped portion 87 of the second elevating portion 82 is rotatably attached to the second end portion 89b on the + X side of the seesaw portion 89. When one of the first end portion 89a and the second end portion 89b is arranged on the upper side, the seesaw portion 89 is arranged on the lower side.

The first elevating portion 81 is arranged above the second elevating portion 82 when the first end portion 89a of the seesaw portion 89 is arranged on the upper side. When the second end portion 89b of the seesaw portion 89 is arranged on the upper side, the second elevating portion 82 is arranged on the upper side with respect to the first elevating portion 81. Hereinafter, a state in which one of the first elevating part 81 and the second elevating part 82 is arranged above the other is referred to as a first arrangement, and a state in which one of the first elevating part 81 and the second elevating part 82 is arranged on the lower side is referred to as a second arrangement. In the present embodiment, when the first elevating part 81 is in the first arrangement, the second elevating part 82 is in the second arrangement. Further, when the second elevating part 82 is in the first arrangement, the first elevating part 81 is in the second arrangement.

In the case of the first arrangement, the plate-shaped portion 84 is arranged at a position where the plate-shaped portion 84 is separated upward from the tubular portion 35. In this case, the plate-shaped portion 84 can be detected by the first detection unit 47 of the first loader 40. On the other hand, in the case of the second arrangement, the first elevating part 81 is arranged at a position where the plate-shaped part 84 is in contact with or close to the tubular part 35. In this case, the plate-shaped portion 84 is not detected by the first detection portion 47 of the first loader 40. Further, when the first elevating portion 81 is in the second arrangement, the locking member 85a is locked to the tubular portion 35. As a result, the first elevating part 81 can be maintained in the second arrangement, and the first elevating part 81 can be prevented from inadvertently moving to the first arrangement.

In the case of the first arrangement, the second elevating portion 82 is arranged at a position where the plate-shaped portion 86 is separated upward from the tubular portion 36. In this case, the plate-shaped portion 86 can be detected by the second detection unit 57 of the second loader 50. On the other hand, in the case of the second arrangement, the plate-shaped portion 86 is arranged at a position where the plate-shaped portion 86 is in contact with or close to the tubular portion 36. In this case, the plate-shaped portion 86 is not detected by the second detection unit 57 of the second loader 50. Further, when the second elevating portion 82 is in the second arrangement, the locking member 87a is locked to the tubular portion 36. As a result, it is possible to maintain the state in which the second elevating unit 82 is in the second arrangement and prevent the second elevating unit 82 from inadvertently moving to the first arrangement.

FIG. 7 is a diagram showing an example of the operation of the connecting member 34. The plate-shaped portion 84 is pushed down by the first loader 40 from the state where the first elevating portion 81 is in the first arrangement and the second elevating portion 82 is in the second arrangement. And the rod-shaped portion 85 descends. The lowering of the plate-shaped portion 84 and the rod-shaped portion 85 lowers the first end portion 89a of the seesaw portion 89. As a result, the second end portion 89b rises, the locking member 87a of the second elevating portion 82 is released, and the rod-shaped portion 87 and the plate-shaped portion 86 of the second elevating portion 82 rise. As a result, as shown in FIG. 7A, the second elevating part 82 becomes the first arrangement ST1 and the first elevating part 81 becomes the second arrangement ST2.

From the state shown in FIG. 7A, the plate-shaped portion 86 and the rod-shaped portion 87 are lowered by pushing down the plate-shaped portion 86 of the second elevating portion 82 by the second loader 50. The lowering of the plate-shaped portion 86 and the rod-shaped portion 87 lowers the second end portion 89b of the seesaw portion 89. As a result, the first end portion 89a rises, the locked state of the locking member 85a of the first elevating portion 81 is released, and the rod-shaped portion 85 and the plate-shaped portion 84 of the first elevating portion 81 rise. As a result, as shown in FIG. 7B, the second elevating part 82 becomes the second arrangement ST2, and the first elevating part 81 becomes the first arrangement ST1.

As described above, in the communication member 34, when one of the first elevating part 81 and the second elevating part 82 in the first arrangement is pushed down by the first loader 40 or the second loader 50, one of them is pushed down. Switches to the second arrangement. At this time, the connecting portion 83 raises the other, so that the other is switched to the first arrangement. That is, in the connecting member 34, when the first portion (first elevating portion 81) is in the first arrangement ST1, the second portion (second elevating portion 82) is in the second arrangement ST2, and the first portion is formed by the connecting portion 83. When (first elevating part 81) is in the second arrangement ST2, the second part (second elevating part 82) is switched to the first arrangement ST1.

Further, as shown in FIG. 4, the work relay device 30 of the present embodiment includes a first elevating part 81, a first lever 61 (disc-shaped member 65), a work mounting table 32 (work insertion part 32a), and a second. The lever 62 (disc-shaped member 67) and the second elevating portion 82 are arranged in a straight line in the X direction (that is, the transfer direction of the work W). As a result, the size of the work relay device 30 in the Z direction (direction orthogonal to the transfer direction of the work W) can be reduced to make the device compact. The first elevating portion 81 and the like are not limited to being arranged in a straight line as described above, and the members may be arranged in a state of being displaced in the Y direction.

Further, the first control unit CONT1 shown in FIG. 1 comprehensively controls the operation of the first machine tool 10 based on a predetermined machining program. Further, the second control unit CONT2 comprehensively controls the operation of the second machine tool 20 based on a predetermined machining program. The first control unit CONT1 and the second control unit CONT2 transmit and receive various information to and from a higher-level controller such as the operating status of the first machine tool 10 and the second machine tool 20 or the tools used by a communication unit (not shown). Is possible.

The first control unit CONT1 determines whether or not the work mounting table 32 is arranged at the first position P1 based on the detection result from the first detection unit 47 of the first loader 40. For example, when the disc-shaped member 65 of the first lever 61 is detected at a predetermined detection position, the first control unit CONT1 determines that the work mounting table 32 is arranged at the first position P1. Further, when the disc-shaped member 65 is not detected at the predetermined detection position, the first control unit CONT1 determines that the work mounting table 32 is not arranged at the first position P1.

The first control unit CONT1 determines whether or not the work W is mounted on the work mounting table 32 based on the detection result from the first detection unit 47. For example, when the work W is detected in the work insertion portion 32a of the work mounting table 32, the first control unit CONT1 determines that the work W is mounted on the work mounting table 32. Further, when the work W is not detected in the work inserting portion 32a of the work mounting table 32, the first control unit CONT1 determines that the work W is not mounted on the work mounting table 32.

The first control unit CONT1 determines whether or not the work W can be delivered to the work mounting table 32 by the first loader 40 based on the detection result from the first detection unit 47. For example, in the first control unit CONT1, when the plate-shaped portion 84 of the first elevating unit 81 is detected by the first detection unit 47, the work W can be delivered to the work mounting table 32 by the first loader 40. Judge that there is. Further, the first control unit CONT1 determines that the work W cannot be delivered to the work mounting table 32 by the first loader 40 when the plate-shaped portion 84 of the first elevating unit 81 is not detected by the first detection unit 47. To do. That is, the first elevating unit 81 notifies the first loader 40 whether or not the work W can be delivered to the work mounting table 32.

The second control unit CONT2 determines whether or not the work mounting table 32 is arranged at the second position P2 based on the detection result from the second detection unit 57 of the second loader 50. For example, when the disc-shaped member 67 of the second lever 62 is detected at a predetermined detection position, the second control unit CONT2 determines that the work mounting table 32 is arranged at the second position P2. Further, the second control unit CONT2 determines that the work mounting table 32 is not arranged at the second position P2 when the disk-shaped member 67 is not detected at the predetermined detection position.

The second control unit CONT2 determines whether or not the work W is mounted on the work mounting table 32 based on the detection result from the second detection unit 57. For example, when the work W is detected in the work insertion portion 32a of the work mounting table 32, the second control unit CONT2 determines that the work W is mounted on the work mounting table 32. Further, when the work W is not detected in the work insertion portion 32a of the work mounting table 32, the second control unit CONT2 determines that the work W is not mounted on the work mounting table 32.

The second control unit CONT2 determines whether or not the work W can be delivered to the work mounting table 32 by the second loader 50 based on the detection result from the second detection unit 57. For example, in the second control unit CONT2, when the plate-shaped portion 86 of the second elevating unit 82 is detected by the second detection unit 57, the work W can be delivered to the work mounting table 32 by the second loader 50. Judge that there is. Further, the second control unit CONT2 determines that the work W cannot be delivered to the work mounting table 32 by the second loader 50 when the plate-shaped portion 86 of the second elevating unit 82 is not detected by the second detection unit 57. To do. That is, the second elevating unit 82 notifies the second loader 50 whether or not the work W can be delivered to the work mounting table 32.

Next, the operation of the machine tool system SYS configured as described above will be described. First, as shown in FIG. 1, the first control unit CONT1 causes the work W previously mounted on the work mounting unit 12 to be held by the first loader 40, for example, on the grip claw 13a of the spindle 15. After that, the first control unit CONT1 processes the work W with the cutting tool T1 of the turret 17. Further, the work W may be inverted by a reversing device (not shown) to hold the work W on the gripping claw 14a of the spindle 16, and the work W may be machined by the cutting tool T1 of the turret 18.

After machining the work W, the first control unit CONT1 hands the work W from the spindle 15 (or the spindle 16) to the loader chuck 43, raises the loader head 41 holding the work W, and further raises the loader head 41. It is moved in the + X direction (work relay device 30 side) and placed above the work relay device 30. After that, the work W is relayed (delivered) from the first machine tool 10 to the second machine tool 20 by using the work relay device 30.

8 to 23 are diagrams showing an example of the relay operation of the work W. Hereinafter, the relay operation of the work W in the work relay device 30 will be described with reference to FIGS. 8 to 23. After the loader head 41 is arranged above the work relay device 30 as described above, the first control unit CONT1 irradiates the detection light from the first detection unit 47 as shown in FIG. 8, and the first elevating unit The plate-shaped portion 84 of 81 is detected. When the plate-shaped portion 84 of the first elevating unit 81 is detected by the first detecting unit 47, the first control unit CONT1 has the first elevating unit 81 in the first arrangement ST1 (see FIG. 7) and the first loader. According to 40, it is determined that the work W can be delivered to the work mounting table 32.

If the plate-shaped portion 84 is not detected by the first detection unit 47, the first control unit CONT1 may determine that the work W cannot be delivered to the work mounting table 32, and may wait for a predetermined time, for example. .. In this case, the first control unit CONT1 may detect the plate-shaped portion 84 by the first detection unit 47 after waiting for a predetermined time, or may instruct the detection operation again. Hereinafter, a case where the work W can be delivered will be described as an example.

Next, as shown in FIG. 9, the first control unit CONT1 moves the loader head 41 by a predetermined distance in the + X direction from the position where the plate-shaped portion 84 is detected, and then emits the detection light from the first detection unit 47. Irradiation is performed to detect the disc-shaped member 65 of the first lever 61. When the disc-shaped member 65 is detected, the first control unit CONT1 determines that the work mounting table 32 is arranged at the first position P1. If the first control unit CONT1 does not detect the disc-shaped member 65 by the first detection unit 47, the first control unit CONT1 may determine that the work mounting table 32 is not at the first position P1 and may wait for a predetermined time, for example. In this case, the first control unit CONT1 may detect the disk-shaped member 65 by the first detection unit 47 after waiting for a predetermined time, or may instruct the detection operation again. Hereinafter, a case where the work mounting table 32 is arranged at the first position P1 will be described as an example.

After confirming that the work W can be delivered to the work mounting table 32 and that the work mounting table 32 is arranged at the first position P1, the first control unit CONT1 first sets the loader head 41. Move to position P1. After that, as shown in FIG. 10, the first control unit CONT1 irradiates the detection light with the first detection unit 47 to detect the work insertion unit 32a of the work mounting table 32. When the work W is not detected in the work insertion portion 32a of the work mounting table 32, the first control unit CONT1 determines that the work W is not mounted on the work mounting table 32. When the work W is detected by the first detection unit 47, the first control unit CONT1 may notify the error that the work W cannot be placed on the work mounting table 32. Hereinafter, a case where the work W is not placed will be described as an example.

As shown in FIG. 11, the first control unit CONT1 adjusts the position of the loader head 41 in the X direction above the work insertion unit 32a. Subsequently, the first control unit CONT1 lowers the loader head 41 and inserts the work W into the work insertion unit 32a and mounts the work W as shown in FIG. After inserting the work W into the work insertion portion 32a, the first control unit CONT1 opens the gripping claw 43a that grips the work W to release the work W, raises the loader head 41, and then -X direction. The loader head 41 is arranged above the first lever 61. Subsequently, as shown in FIG. 13, the first control unit CONT1 lowers the loader head 41 and causes the gripping claw 43a of the loader chuck 43 to grip the disc-shaped member 65 of the first lever 61.

Next, as shown in FIG. 14, the first control unit CONT1 moves the loader head 41 by a predetermined distance in the + X direction (second machine tool 20 side) with the loader chuck 43 holding the disc-shaped member 65. Move to. As a result, the first lever 61 moves in the + X direction. The movement of the first lever 61 causes the first rack 71 to move in the + X direction, and the first pinion gear 73 and the first rotating portion 75 rotate around the Z axis. The transmission member 77 orbits due to the rotation of the first rotating portion 75, and the work mounting table 32 moves from the first position P1 to the second position P2 with the work W mounted.

The moving distance of the loader head 41 is shorter than the moving distance from the first position P1 to the second position P2 of the work mounting table 32. Further, the moving distance of the loader head 41 can be set in advance as a distance required for the work mounting table 32 to move to the second position P2. Further, due to the rotation of the transmission member 77, the second rotating portion 76 is driven to rotate, and the second pinion gear 74 rotates around the Z axis. The rotation of the second pinion gear 74 causes the second rack 72 and the second lever 62 to move in the + X direction.

After the work mounting table 32 is arranged at the second position P2, the first control unit CONT1 releases the grip of the first lever 61 by the loader chuck 43 to raise the loader head 41, and subsequently raises the loader head 41. It is moved in the −X direction and placed above the first elevating unit 81. Subsequently, as shown in FIG. 15, the first control unit CONT1 lowers the loader head 41 and brings the loader chuck 43 into contact with the plate-shaped portion 84. At this time, the second control unit CONT2 arranges the loader head 51 of the second loader 50 above the second elevating unit 82 and irradiates the detection light from the second detection unit 57 to detect the plate-shaped portion 86. May be good. The timing at which the second detection unit 57 starts detecting the plate-shaped portion 86 is not limited to the above, and may be, for example, after the first elevating unit 81 is lowered by the loader head 41.

Next, as shown in FIG. 16, the first control unit CONT1 lowers the loader head 41 and pushes down the first elevating unit 81. When the first elevating part 81 is lowered, the first elevating part 81 is switched to the second arrangement. Further, the seesaw portion 89 swings so that the first end portion 89a descends and the second end portion 89b rises. As a result, the second elevating part 82 is switched to the first arrangement. When the second elevating part 82 is arranged in the first position, the plate-shaped part 86 is detected by the second detecting part 57. The second control unit CONT2 says that when the plate-shaped portion 86 of the second elevating unit 82 is detected by the second detection unit 57, the work W can be delivered to the work mounting table 32 by the second loader 50. to decide.

Next, as shown in FIG. 17, the second control unit CONT2 moves the loader head 51 above the second position P2 and irradiates the detection light from the second detection unit 57 to irradiate the work of the work mounting table 32. The insertion portion 32a is detected. When the work W is detected in the work insertion unit 32a, the second control unit CONT2 determines that the work W is mounted on the work mounting table 32. When the work W is not detected in the work insertion unit 32a, the second control unit CONT2 may notify the upper controller or the like of an error, for example. Further, the loader head 41 of the first loader 40 is raised and moved to the first machine tool 10 side.

Next, as shown in FIG. 18, the second control unit CONT2 lowers the loader head 51 and grips the work W inserted into the work insertion unit 32a by the gripping claw 53a of the loader chuck 53. Next, as shown in FIG. 19, the second control unit CONT2 raises the loader head 51 and takes out the work W from the work insertion unit 32a. Subsequently, the second control unit CONT2 moves the loader head 51 in the + X direction, conveys the loader head 51 to, for example, the spindle 25 (see FIG. 1) of the second machine tool 20, and holds the work W on the grip claw 23a of the spindle 25. Let me. After that, the second control unit CONT2 processes the work W using the tool of the turret 27. After processing the work W, for example, the processed work W is placed on the work mounting portion 22 of the second machine tool 20 by the second loader 50.

Further, after passing the work W to the main shaft 25, the second control unit CONT2 moves the loader head 51 in the −X direction to arrange the loader head 51 above the second lever 62, and lowers the loader head 51. Next, as shown in FIG. 20, the disc-shaped member 67 of the second lever 62 is gripped by the gripping claw 53a of the loader chuck 53. Next, as shown in FIG. 21, the second control unit CONT2 moves the loader head 51 by a predetermined distance in the −X direction (first machine tool 10 side) with the loader chuck 53 holding the disc-shaped member 67. ). As a result, the second lever 62 moves in the −X direction. The movement of the second lever 62 causes the second rack 72 to move in the −X direction, and the second pinion gear 74 and the second rotating portion 76 to rotate around the Z axis. The transmission member 77 orbits due to the rotation of the second rotating portion 76, and the work mounting table 32 moves from the second position P2 to the first position P1 with the work W mounted.

The moving distance of the loader head 51 is shorter than the moving distance from the second position P2 to the first position P1 of the work mounting table 32. Further, the moving distance of the loader head 51 can be set in advance as a distance required for the work mounting table 32 to move to the first position P1. Further, due to the rotation of the transmission member 77, the first rotating portion 75 is driven to rotate, and the first pinion gear 73 rotates around the Z axis. The rotation of the first pinion gear 73 causes the first rack 71 and the first lever 61 to move in the −X direction.

After the work mounting table 32 is arranged at the first position P1, the second control unit CONT2 releases the grip of the second lever 62 by the loader chuck 53 to raise the loader head 51, and subsequently raises the loader head 51. It is moved in the + X direction and arranged above the second elevating unit 82. Subsequently, as shown in FIG. 22, the second control unit CONT2 lowers the loader head 51 and brings the loader chuck 53 into contact with the plate-shaped portion 86. At this time, the first control unit CONT1 arranges the loader head 41 of the first loader 40 above the first elevating unit 81 and irradiates the detection light from the first detection unit 47 to detect the plate-shaped portion 84. May be good. The loader head 41 is arranged above the first elevating portion 81 while holding the work W to be relayed next. The timing at which the plate-shaped portion 84 is started by the first detection unit 47 is not limited to the above, and may be, for example, after the second elevating unit 82 is lowered by the loader head 51.

Next, as shown in FIG. 23, the second control unit CONT2 lowers the loader head 51 and pushes down the second elevating unit 82. As the second elevating part 82 descends, the second elevating part 82 switches to the second arrangement. Further, the seesaw portion 89 swings so that the second end portion 89b descends and the first end portion 89a rises. As a result, the first elevating part 81 is switched to the first arrangement. When the first elevating part 81 is arranged in the first position, the plate-shaped part 84 is detected by the first detecting part 47. When the plate-shaped portion 84 is detected by the first detection unit 47, the first control unit CONT1 determines that the work W can be delivered to the work mounting table 32 by the first loader 40.

After that, the first control unit CONT1 is made to repeat the operations after FIG. 8 described above. In the above example, the case where the work W is transferred from the first machine tool 10 to the second machine tool 20 is shown, but there is also a case where the work W is transferred from the second machine tool 20 to the first machine tool 10. The same is true. In this case, the second loader 50 mounts the work W on the work mounting table 32, and the first loader 40 operates so as to receive the work W of the work mounting table 32. That is, the description of the first loader 40 in the above description is applied to the second loader 50, and the description of the second loader 50 is applied to the first loader 40.

FIG. 24 is a diagram showing the operation of the moving mechanism 33A according to the modified example. In the following description, the first rack 71A on the first loader 40 side is taken as an example, but the same applies to the second rack on the second loader 50 side. In the following description, the same or equivalent components as those in the above-described embodiment are designated by the same reference numerals, and the description will be omitted or simplified. As shown in FIG. 24, the first rack 71A of the moving mechanism 33A is attached to the connecting member 66 of the first lever 61A. The first rack 71A becomes the first lever 61A and can be raised and lowered by a guide (not shown). A plurality of teeth in the vertical direction are formed on the side 71Ae on the −X side of the first rack 71A, and mesh with the teeth of the first pinion gear 73. The first pinion gear 73 rotates around the Z axis as the first rack 71A moves in the vertical direction.

As shown in FIG. 24A, the disc-shaped member 65 is gripped by the loader chuck 43 of the first loader 40 from the lowered position of the first rack 71A to raise the loader head 41 (in FIG. 24). , The illustration of the first loader 40 is omitted.) As shown in FIG. 24 (B), as the first rack 71A rises, the first pinion gear 73 rotates counterclockwise about the Z axis in the drawing. Rotate. As a result, the transmission member 77 can be moved to move the work mounting table 32 in the + X direction. Further, from the position where the first rack 71A is raised, the disc-shaped member 65 is gripped by the loader chuck 43 of the first loader 40 (or without gripping), and the loader head 41 is lowered to lower the first pinion gear. 73 rotates clockwise around the Z axis. As a result, the transmission member 77 can be moved to move the work mounting table 32 in the −X direction.

In the configuration shown in FIG. 24, the work mounting table 32 can be moved between the first position P1 and the second position P2 by moving the first lever 61A and the second lever (not shown) up and down. When the first lever 61A is raised, the second lever is lowered, and when the second lever is raised, the first lever is lowered. In this way, the first lever 61A and the second lever (not shown) are moved up and down by utilizing the raising and lowering operation of the loader heads 41 and 51, so that the movement amount of the loader heads 41 and 51 (movement amount of the first lever 61A and the like). Can be increased. For example, in order to move the first lever or the like significantly in the X direction, it is necessary to lengthen the guide rails 44b and 54b in the X direction (see FIG. 1), and the guide rails 44b and 54b cannot interfere with each other and extend. In some cases. On the other hand, by utilizing the ascending / descending operation of the loader heads 41 and 51, it is possible to increase the amount of movement of the first lever 61A and the like without extending the guide rails 44b and 54b in the X direction.

25 (A) and 25 (B) are views showing a connecting member 34A according to a modified example. In the above-described embodiment, the configuration in which the connecting member 34 has the seesaw portion 89 has been described as an example, but the present invention is not limited thereto. As shown in FIG. 25, the connecting member 34A has a disk-shaped first portion 81A and a second portion 82A, and a rod-shaped connecting portion 83A. The first portion 81A and the second portion 82A are attached to the −X side end portion and the + X side end portion of the connection portion 83A, respectively. The connecting portion 83A is arranged in the tubular portion 35A provided on the rail 64.

The first portion 81A is arranged on the −X side of the tubular portion 35A, and the second portion 82A is arranged on the + X side of the tubular portion 35A. As shown in FIG. 25 (A), for example, by pushing the first portion 81A in the + X direction by the first loader 40, the first portion 81A approaches the tubular portion 35A and the second portion 82A is the connecting portion 83A. It is pushed by and separated from the tubular portion 35A. Further, as shown in FIG. 25 (B), for example, by pushing the second portion 82A in the −X direction by the second loader 50, the second portion 82A approaches the tubular portion 35A, and the first portion 81A becomes closer. It is pushed by the connecting portion 83A and separated from the tubular portion 35A.

Regarding the first portion 81A and the second portion 82A, the state of being away from the tubular portion 35A is the first arrangement, and the state of being close to the tubular portion 35A is the second arrangement. In this case, the first detection unit 47 of the first loader 40 can detect the first portion 81A in the first arrangement, and the second detection unit 57 of the second loader 50 is in the first arrangement. It is possible to detect the second part 82A. Therefore, information can be transmitted to the loader on the other side by a simple operation such as pressing the first portion 81A or the second portion 82A.

As described above, according to the work relay device 30 of the present embodiment, in the moving mechanisms 33 and 33A, the work mounting table 32 is set to the first position P1 by using the force that the first loader 40 or the second loader 50 moves. Since it is moved to and from the second position P2, a dedicated drive source, electrical wiring, and the like for moving the work mounting table 32 are not required. Further, in the connecting members 34 and 34A, when one of the first portion and the second portion is in the first arrangement, the other is in the second arrangement, so that the position of the first part or the second part should be confirmed. As a result, information can be exchanged without using an electric signal, and a detection sensor or the like for detecting the position of the work mounting table becomes unnecessary. As a result, it is possible to suppress an increase in the cost of the work relay device 30, and it is possible to shorten the construction period when installing the work relay device 30. Further, since the force of moving the loader is used, it is possible to impart versatility such that it can be used between machine tools equipped with the loader.

Although the embodiments have been described above, the present invention is not limited to the above description, and various modifications can be made without departing from the gist of the present invention. It is also possible to appropriately combine the above-described embodiments and modifications. Further, in the above-described embodiment, as the machine tool system SYS, the first machine tool 10 is a parallel biaxial lathe and the second machine tool 20 is an opposed biaxial lathe, but the combination is not limited to this, and the machine tool The type of can be set arbitrarily.

Further, in the above-described embodiment, in the moving mechanism 33, the first rack 71 and the second rack 72 move in the same X direction, but the first rack 71 and the second rack 72 are not limited to this. It may be configured to move in different directions.

Further, in the above-described embodiment, the optical sensor is used as the first detection unit 47 of the first loader 40 and the second detection unit 57 of the second loader 50, but the present invention is not limited to this. For example, an image may be acquired by an imaging device such as a camera, and it may be detected that the first elevating portion 81 (plate-shaped portion 84) is in the first arrangement by image processing such as pattern matching based on this image. .. In this case, the disc-shaped member 65 of the first lever 61, the work insertion portion 32a of the work mounting table 32, and the like may also be acquired and their respective positions and the like may be detected. Further, when detecting using an image, the camera or the like does not have to be arranged in each of the first loader 40 and the second loader 50. For example, a camera may be placed in a part of the building to acquire an image. Further, the first detection unit 47 and the second detection unit 57 are not limited to using a non-contact type sensor such as an optical sensor, and a contact type sensor may be used.

Further, in the above-described embodiment, the work mounting table 32 is moved from the first position P1 to the second position P2 by the first loader 40, and the work mounting table 32 is moved from the second position P2 to the first position P1 by the second loader 50. It has been moved to, but it is not limited to this. For example, the work mounting table 32 may be moved from the first position P1 to the second position P2 by the first loader 40, and the work mounting table 32 may be moved from the second position P2 to the first position P1. The work mounting table 32 may be moved from the second position P2 to the first position P1 by the two loaders 50, and the work mounting table 32 may be moved from the first position P1 to the second position P2.

Further, in the above-described embodiment, the seesaw portion 89 or a rod-shaped member is used as the connecting portions 83 and 83A of the connecting members 34 and 34A, but the present invention is not limited thereto. Any connection portion such that when either one of the first portion and the second portion is in the first arrangement and the other is in the second arrangement is applicable, and a part of this connection portion may be, for example, a belt. A wire, a chain, or the like may be used, or a cam, a cam follower, a gear train, or the like may be used.

P1 ... 1st position P2 ... 2nd position ST1 ... 1st arrangement ST2 ... 2nd arrangement W ... Work SYSTEM ... Machine tool system 10 ... 1st machine tool 20 ... 2nd machine tool 30 ... Work relay device 31 ... Base 32 ... Work mounting table 33, 33A ... Moving mechanism 34, 34A ... Communication member 40 ... 1st loader 47 ... 1st detection unit 50 ... 2nd loader 57 ... 2nd detection unit 61, 61A ... 1st lever 62 ... 2nd lever 63 ... Transmission mechanism 71, 71A ... 1st rack 72, 72A ... 2nd rack 73 ... 1st pinion gear 74 ... 1st pinion gear 75 ... 1st rotating part 76 ... 2nd rotating part 77 ... Transmission member 81 ... 1st elevating part (1st part)
81A ... 1st part 82 ... 2nd elevating part (2nd part)
82A ... Second part 83, 83A ... Connection parts 85a, 87a ... Locking member 89 ... Seesaw part

Claims (7)

A first machine tool equipped with a first loader capable of transporting workpieces,
A second machine tool equipped with a second loader capable of transporting workpieces,
It is installed between the first machine tool and the second machine tool and can mount a work, and both the first loader and the second loader are provided with a work mounting table on which the work can be delivered. A machine tool system including a work relay device that relays a work from the first loader to the second loader, or from the second loader to the first loader.
By moving each of the first loader, the second loader, and the work mounting table to each other, both the first loader and the second loader can deliver the work to the work mounting table. Yes,
The first and second parts,
The first portion is such that when the first portion is in the first arrangement, the second portion is switched to the second arrangement, and when the first portion is in the second arrangement, the second portion is switched to the first arrangement. A connecting member having a connecting portion for connecting the second portion and the second portion is provided.
The first arrangement of the first part or the second part indicates that the work can be delivered to the work mounting table by the first loader or the second loader.
After passing the work to the work mounting table, the first loader abuts on the first portion in the first arrangement and switches to the second arrangement, whereby the second part is moved from the second arrangement. Switch to the first arrangement ,
After receiving the work from the work mounting table, the second loader abuts on the second portion in the first arrangement and switches to the second arrangement, so that the first part is transferred from the second arrangement. Machine tool system that switches to the first arrangement. The work mounting table is movable between the first machine tool side and the second machine tool side, and is movable.
The first loader is
The operation of placing the work machined by the first machine tool on the work mounting table located on the first machine tool side, and
After the work mounting table on which the work mounted by the first loader is placed moves to the second machine tool side, it comes into contact with the first portion in the first arrangement and switches to the second arrangement. The machine tool system according to claim 1, wherein the operation of switching the second portion from the second arrangement to the first arrangement is performed. The second arrangement of the first part or the second part indicates that the work cannot be delivered to the work mounting table by the first loader or the second loader, according to claim 1 or 2. The machine tool system described. The connection portion has a seesaw portion that can swing around a horizontal axis.
The first portion and the second portion are connected to both ends of the seesaw portion to move up and down, one of which is located on the upper side is the first arrangement, and the other of which is located on the lower side is the second. The machine tool system according to any one of claims 1 to 3, which is an arrangement. 1. Any one of claims 1 to 4, further comprising a locking member that holds the state of being in the first arrangement or the second arrangement with respect to at least one of the first portion and the second portion. The machine tool system described. The first portion in the first arrangement can be detected by the first detection unit included in the first loader.
The machine tool system according to any one of claims 1 to 5, wherein the second portion in the first arrangement can be detected by a second detection unit included in the second loader. The first portion in the second arrangement is not detected by the first detection unit.
The machine tool system according to claim 6, wherein the second portion in the second arrangement is not detected by the second detection unit.

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