JP2003200329A - Machine tool for compound machining - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine tool for compound machining capable of easily changing arrangement for a line boring bar storing magazine, even during machining, without receiving restrictions on the storing number of line boring bars. <P>SOLUTION: This machine tool 1 for compound machining is provided with a main spindle head 6 rotatably supporting a main spindle 16 and movable in a Z-axis direction and a Y-axis direction relative to a workpiece, the line boring bar storing magazine 7 which is installed in a machine main body 5, is provided at the outside of a splash guard 21 for covering a machining region 20 and is capable of storing the line boring bar 3, a line boring bar transfer means 8 for transferring the line boring bar 3 between a carry-out/in position P1 and a line boring bar replacing position P2, a tool magazine capable of storing a tool, and an automatic tool replacing device for replacing the tool between the tool magazine and the main spindle 16. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine tool for combined machining capable of performing line boring with a line boring bar and machining other than line boring.

[0002]

2. Description of the Related Art When a workpiece has a plurality of holes on the same axis such as a cylinder block of an engine, the holes are formed by a line boring bar (hereinafter referred to as a line bar). Line boring is often used.
Japanese Patent Publication No. 56-45735 discloses a machine tool that is equipped with a disk-shaped tool storage magazine and performs boring processing (line boring processing). The tool storage magazine stores a line bar and a drilling tool for processing other than boring. On the other hand, Japanese Patent Laid-Open No. 62-4504 discloses a machine tool having a line bar magazine and a tool magazine separately.

[0003]

However, in the machine tool described in the former publication, since the tool storage magazine is located above the spindle head, the line bar and the drilling tool are arranged in the tool storage magazine. It was difficult to replace. In particular, since the line bar is long and heavy, the work is burdened if the position for setup change is high. Further, since the tool storage magazine is disc-shaped, there is a limit to the number of line bars that can be stored.

Since the machine tool described in the latter publication is provided with the line bar magazine for storing only the line bar, the setup change operation for the line bar magazine is relatively easy. However, since the line bar magazine is provided on the table base and moves together with the table, setup change for the line bar magazine cannot be performed during processing. Further, since the line bar magazine is configured to support the line bar on the line bar holder on the table base, the number of line bars stored in the line bar magazine is also limited. By utilizing the movement operation of the spindle head, the spindle directly attaches and detaches the line bar stored in the line bar magazine. Therefore, when the line bar is transferred, the spindle head moves to the line bar transfer position, and the line bar magazine also moves to the line bar transfer position together with the table.

On the other hand, if the table and the line bar magazine are not so far apart from each other, there is a great possibility that they will be affected by scattered objects such as chips and coolant during machining of the work. If you try to avoid the influence of scattered objects, the table base will increase in size. Further, as the type and the number of line bars increase, the line bar stand becomes larger. Then, the machining position of the work and the transfer position of the line bar greatly separate,
It takes time to move the table, line bar magazine and table base. As a result, there is a problem that it takes time to replace the line bar and the non-cutting time increases. In addition, there is a problem that the machine tool becomes large and the installation area also increases.

The present invention has been made to solve such a problem, and it is possible to easily carry out setup change for a line boring bar storage magazine among the line boring bar storage magazine and the tool magazine even during processing. It is an object of the present invention to provide a machine tool for combined machining, which is capable of performing the above-mentioned operations and has no restriction on the number of stored articles.

[0007]

In order to achieve the above object, a machine tool for combined machining according to the present invention performs a line boring process on a hole of a work with a line boring bar. A machine tool for combined machining, which performs machining other than the line boring on the workpiece with a tool of another type, which rotatably supports a spindle and is parallel to at least the axis of the spindle with respect to the workpiece. A spindle head that is movable in a first direction and a second direction that is orthogonal to the first direction, and a predetermined outside of a splash guard that is attached to the machine body of the machine tool for combined machining and covers the machining area. A line boring bar storage magazine which is provided at a position and can be stored with the line boring bar oriented in a direction parallel to the first direction, and the line boring bar storage magazine. Transfer the line boring bar between a carry-in / out position where the line boring bar is carried into and out of the storage magazine, and a line boring bar exchange position for exchanging the line boring bar with respect to the spindle. And a line boring bar transfer means for carrying out, and a tool magazine that is attached to the machine body and is provided at another predetermined position outside the splash guard and that can store the tool, and between the tool magazine and the spindle. And an automatic tool changing device for changing the tool. As a preferred specific embodiment, the machine body is movable in the first direction, which is substantially horizontal, and a column provided in the machine body of the machine tool for combined machining, and is movable in the second direction, which is substantially vertical. The spindle head provided on the column, and a table or pallet provided on the machine body so as to be movable in a third direction orthogonal to the first and second directions and on which the workpiece is placed. However, the line boring bar exchange operation with respect to the spindle is performed at the line boring bar exchange position set at substantially the same positions as the third direction and the second direction of the tool exchange position for performing the tool exchange operation. Then, it is preferable to perform the movement operation of the spindle head.

[0008] Preferably, the line boring bar accommodating magazine includes a magazine base, at least one tool cassette movably provided on the magazine base, on which at least one line boring bar can be mounted, The tool cassette moving means is provided on the magazine base and is capable of moving the tool cassette to the carry-in / out position. For example, the tool cassette can mount a plurality of the line boring bars, and
A plurality of units are provided on the magazine base so as to overlap in a direction parallel to the second direction, and the tool cassette moving means moves the tool cassette in a direction parallel to the second direction. Preferably. Preferably, a guide means is provided above the ceiling portion of the splash guard in the third direction from the line boring bar storage magazine to above the processing area, and the line boring bar transfer means is provided with the tool. The cassette is guided by the guiding means to move above the ceiling portion in the third direction. In the machine tool for combined machining of the present invention, in a table device having a table or a pallet on which the workpiece is placed, one end can support the other end of the line boring bar mounted on the spindle. Is movably provided between a support position and a retracted position, and the bar support moves to the support position when the line boring bar is mounted on the spindle, and is different from the line boring bar. It is preferable that the tool is moved to the retracted position when the tool is mounted on the spindle. The line boring bar storage magazine can store a plurality of types or the same type of the line boring bar, and the other end side of the line boring bar is
It is preferable that they can be supported by the same bar support by making their diameters common.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment according to the present invention will be described below with reference to FIGS. 1, 2, and 3 are a front view, a plan view, and a left side view of a machine tool for combined machining, respectively. Figure 4 is IV of Figure 2
-IV line arrow view, FIG. 5 is a V-V line arrow view of FIG. 4, and FIG. 6 is a VI-VI line arrow view of FIG.

As shown in FIGS. 1 to 3, a machine tool for combined machining (hereinafter, referred to as a machine tool) 1 has a line boring bar (hereinafter, referred to as a line bar) 3 for forming a hole 12 of a workpiece 2. A combination of a function of a line boring machine for performing a line boring process and a function of a machining center (hereinafter, referred to as MC) for performing a process other than the line boring process on the workpiece 2 with a tool 4 of a type different from the line bar 3. It is a machine. The "processing other than line boring processing" is, for example, a tool 4, such as a drill, a face mill, an end mill, or a tap, for drilling, flattening, or machining a workpiece 2.
It is to perform normal cutting such as grooving and tapping. The workpiece 2 is, for example, a cylinder block for an automobile engine, and has a plurality of holes 12 bored on the same axis CL1.

The machine tool 1 includes a machine body 5 having a spindle head 6, a line boring bar storage magazine (hereinafter referred to as a line bar magazine) 7, a line boring bar transfer means (hereinafter referred to as a line bar transfer means) 8 , Tool magazine 9, automatic tool changer (hereinafter referred to as ATC) 1
7. Automatic pallet changer (hereinafter referred to as APC) 10
Etc., and is controlled by an NC (numerical control) device 11. The machine tool 1 uses the line bar 3 to move the workpiece 2
Line boring processing such as finish boring processing of the plurality of holes 12 is performed. Line bar 3 with multiple cutting tools
Is a boring bar for boring a plurality of holes 12, and the line boring improves the machining accuracy such as concentricity of the holes 12. Further, the machine tool 1 can perform normal cutting using a tool 4, such as a drill, a face mill, an end mill, or a tap. As described above, the machine tool 1 has one spindle 16 and the spindle 1
By mounting one of the line bar 3 and the tool 4 on the line 6, line boring and normal cutting are performed.

The bed 14 of the machine tool 1 constitutes the machine body of the machine body 5 and is installed on the floor surface 15. The spindle head 6 of the machine body 5 rotatably supports a spindle 16 having an axis line CL in a substantially horizontal direction. The direction parallel to the axis CL of the main shaft 16 is the Z-axis direction (first direction).
Note that the direction of the axis line CL of the main shaft 16 (Z-axis direction) may be a direction other than the horizontal direction, and may be, for example, a direction inclined by a predetermined angle from the horizontal direction. The spindle head 6
It is movable with respect to the workpiece 2 in at least the Z-axis direction and the Y-axis direction orthogonal to the Z-axis direction (the second direction, here the vertical direction). The NC device 11 for controlling the machine tool 1 is arranged on the side of the bed 14. The processing area 20 of the machine tool 1 is covered with a splash guard 21, an opening / closing cover 22 and the like so that chips and cutting oil do not scatter outside the processing area 20.

The line bar magazine 7 is attached to the machine main body 5 and is provided at a predetermined position outside the splash guard 21.
One or more can be stored in a state of being oriented in a direction parallel to the axial direction. Since the line bar magazine 7 can accommodate a plurality of types of line bars 3, the machine tool 1 can perform a plurality of types of line boring. The line bar magazine 7 is provided separately from the machine body 5 and independently, but may be provided integrally with the machine body at a predetermined position outside the splash guard 21. The line bar transfer means 8 carries the line bar 3 placed on a tool cassette 61 (described later) into and out of the line bar magazine 7, and a loading / unloading position P1 for loading and unloading the line bar 3 with respect to the main shaft 16. It has a function of transferring the line bar 3 to and from a line boring bar exchange position (hereinafter referred to as a line bar exchange position) P2 for performing exchange.

The tool magazine 9 is attached to the machine body 5 and is provided at another predetermined position outside the splash guard 21 so that one or a plurality of tools 4 of a plurality of types or the same type can be stored. . In addition, tool magazine 9
Is provided independently of the machine body 5,
It may be integrally provided with the machine body at another predetermined position outside the splash guard 21. The ATC 17 can exchange the tool 4 between the tool magazine 9 and the spindle 16.
Then, the ATC 17 automatically replaces the tool 4 with respect to the spindle 16 at the tool replacement position P3 and detachably mounts it.

The machine body 5 is a column 25 provided on the bed 14 of the machine tool 1 so as to be movable in the substantially horizontal Z-axis direction.
And a spindle head 6 provided on a column 25 so as to be movable in a substantially vertical Y-axis direction, and provided on a bed 14 so as to be movable in an X-axis direction (third direction) orthogonal to both Z-axis and Y-axis directions. And a table 26 for clamping the pallet 45 on which the workpiece 2 is placed. Note that the workpiece 2 may be placed directly on the table 26. The exchange operation of the line bar 3 with respect to the spindle 16 is performed by moving the spindle head 6 at the line bar exchange position P2. The line bar exchange position P2 is a position which is set to be substantially the same as the X axis direction and the Y axis direction of the tool exchange position P3 for exchanging the tool 4. That is, when the line bar 3 is delivered to the spindle 16, the spindle head 16 reciprocates in the Z-axis direction and also slightly moves in the Y-axis direction.
The line bar 3 is attached to and detached from the main shaft 16. The spindle head 6 is configured not to move in the X-axis direction. Since the line bar exchange position P2 is distant from the machining position P4, there is no possibility that the spindle head 6, the line bar 3 or the like will interfere with the workpiece 2 on the table 26 during the exchange operation of the line bar 3.

A Z-axis guide surface 27 is provided on the upper surface of the bed 14.
Are provided in the Z-axis direction. The column 25 is arranged so as to be movable in the Z-axis direction along the Z-axis guide surface 27. The Z-axis screw shaft 28 of the Z-axis ball screw is arranged parallel to the Z-axis guide surface 27. A Z-axis nut (not shown) fixed to the column 25 is attached to the Z-axis screw shaft 28.
Is screwed in. The Z-axis screw shaft 28 is used for the bed 14
The Z-axis servomotor 29 attached to the motor is rotationally driven in the forward and reverse directions. When the Z-axis screw shaft 28 is rotated by being driven by the Z-axis servo motor 29, the column 25 is guided and supported by the Z-axis guide surface 27 and reciprocates on the bed 14 in the Z-axis direction. The movement operation of the column 25 is movement of the spindle head 16 in the Z-axis direction with respect to the workpiece 2.

The column 25 is provided with a Y-axis guide surface 30 in the Y-axis direction. The spindle head 6 is a Y-axis guide surface 30.
Is arranged so as to be movable in the Y-axis direction. The Y-axis screw shaft 31 of the Y-axis ball screw is arranged in parallel with the Y-axis guide surface 30. A Y-axis nut (not shown) fixed to the spindle head 6 is screwed into the Y-axis screw shaft 31. The Y-axis screw shaft 31 is rotationally driven in the forward and reverse directions by a Y-axis servomotor 32 attached to the column 25. When the Y-axis screw shaft 31 is rotated by being driven by the Y-axis servo motor 32, the spindle head 6 is guided and supported by the Y-axis guide surface 30 and reciprocates in the Y-axis direction. The movement of the spindle head 6 is movement in the Y-axis direction with respect to the workpiece 2.

The table device 40 has a table 26 (or pallet) on which the workpiece 2 is placed. An X-axis guide surface (not shown) is provided on the upper surface of the bed 14 in the X-axis direction. The table device 40 is arranged to be movable in the X-axis direction while being guided by the X-axis guide surface. The X-axis screw shaft (not shown) of the X-axis ball screw is
It is arranged parallel to the X-axis guide surface. An X-axis nut fixed to the table device 40 is screwed into the X-axis screw shaft. The X-axis screw shaft is rotationally driven in the forward and reverse directions by an X-axis servomotor 44 attached to the bed 14. When the X-axis screw shaft is driven by the X-axis servomotor 44 to rotate, the table device 40 is guided and supported by the X-axis guide surface and reciprocates in the X-axis direction together with the table 26. The movement of the table 26 is the movement of the workpiece 2 in the X-axis direction with respect to the line bar 3 (or the tool 4) mounted on the spindle 16.

The table 26 is a pallet clamp, which clamps and unclamps the pallet 45.
It has an unclamp mechanism. By driving the indexing motor 46 of the table device 40, the table 26 can be swiveled and indexed in the B-axis (axis of swivel motion around the Y1 axis parallel to the Y-axis) direction. The object 2 can be turned in the B-axis direction and indexed at a predetermined position.
The APC 10 mounts the pallet 45 on which the workpiece 2 is placed,
The table 26 is automatically replaced. APC10
The pallet 45 can be exchanged between the table 26 and the setup table 47 by a cylinder device (not shown). The setup table 47 has pallet guides 47 a, 47 for movably mounting the pallet 45.
a is provided. In addition, the splash guard 21 is provided with an opening covered with an opening / closing cover 22 for loading / unloading the pallet 45. To open / close this opening, the opening / closing cover 22 is opened / closed by a cylinder (not shown). .

The spindle 16 is rotationally driven by a spindle motor 33 provided on the spindle head 6. A tool mounting portion is provided at the front end of the spindle 16. Line bar transfer means 8
The line bar 3 that is automatically transferred and is automatically replaced by the line bar 3 or the tool 4 that is automatically replaced by the ATC 17 is detachably mounted on the tool mounting portion. The spindle 16 is provided with a tool clamp / unclamp mechanism for detachably mounting the line bar 3 or the tool 4 on the tool mounting portion of the spindle 16. The tool bar clamp / unclamp mechanism clamps / unclamps the line bar 3 (or the tool 4) on the spindle 16.

As described above, the spindle head 6 is movable in the Z-axis direction and the Y-axis direction, and the table 26 is movable in the X-axis direction. As a result, the spindle head 6 and the table 26 are relatively movable in three orthogonal directions including the X axis direction, the Y axis direction, and the Z axis direction. Therefore, when the line bar 3 is mounted on the main shaft 16, the line bar 3 and the workpiece 2 move relative to each other, and the line bar 3 can perform line boring processing on the plurality of holes 12 of the workpiece 2. it can.
The line boring process is performed by rotating the line bar 3 and moving the spindle head 6 in the Z-axis direction. Also, the spindle 1
When the tool 4 is mounted on the tool 6, the tool 4 and the workpiece 2 on the table 26 relatively move in the directions of three orthogonal axes, and the workpiece 4 is cut by the tool 4. Therefore, the machine tool 1 has a function corresponding to the line boring machine and a function corresponding to the MC.

The machine tool 1 has a bar support 50. The bar support 50 is provided on the table device 40 and is movable in the X-axis direction between a support position P5 and a retracted position P6 in the vicinity thereof, as shown by an arrow E.
The bar support 50 moves to the support position P5 when the line bar 3 is attached to the spindle 16, and
When another type of tool 4 is mounted on the spindle 16, the tool 4 is moved to the retracted position P6. At the support position P5, the bar support 50 is capable of supporting one end 3a side on the other end 3b side of the line bar 3 mounted on the main shaft 16. The bar support 50 retracts to the retracted position P6 when the tool 4 is mounted on the spindle 16. That is, when the table 26 on which the workpiece 2 is placed performs the turning and indexing operation,
When the pallet 45 is replaced by the APC 10, and
When the tool 4 is attached to the spindle 16 and the normal cutting of the workpiece 2 is performed, the bar support 50 supports the support position P5.
If it is located at, there is a risk of interfering with the workpiece 2. Therefore, in such a case, the bar support 50 moves from the support position P5 to the retracted position P6 and retracts.

When the table device 40 moves in the X-axis direction, the bar support 50 attached to the table device 40.
Also moves in the X-axis direction together with the table 26. The bar support 50 has a bar support body 51 provided on the table device 40 so as to be capable of reciprocating in the X-axis direction, and a support bush 52 rotatably supported by the bar support body 51. The bar support body 51 is movably provided on the table device 40 via a bar support guide surface (not shown). The bar support body 51 is
The other end 3b of the line bar 3 via the support bush 52
Support.

A fluid pressure cylinder device 53 is attached to the table device 40 in the X-axis direction. The rod 54 of the fluid pressure cylinder device 53 includes the bar support body 51.
Are linked to. By switching and controlling the supply direction of the pressure fluid supplied to the fluid pressure cylinder 53, the bar support main body 51 is guided and supported by the bar support guide surface and reciprocates in the X-axis direction. As a result, the support bush 52 can move to the support position P5 and the retracted position P6, respectively. Although the bar support body 51 has been described as being moved to the support position P5 and the retracted position P6 by the fluid pressure cylinder 53, it may be moved by a feed motor and a screw mechanism capable of positioning control. In that case, the bar support body 51 can be moved to a desired position in the X-axis direction to support the line bar 3. Further, if the bar support body 51 is movable in the Y-axis direction, the line bar 3 can perform line boring processing at desired positions in the X-axis direction and the Y-axis direction.

FIG. 7 is an enlarged view showing a state where the line bar transfer means 8 is transferring a tool cassette 61 (described later) in FIG. 6, and FIG. 8 is a view of the tool cassette 61 in FIG. FIG. 9 is a sectional view taken along line IX-IX of FIG.
0 is holding means 130 capable of holding the tool cassette 61.
It is sectional drawing which shows (it mentions later). As shown in FIG. 1, FIG. 2, FIG. 4 to FIG. 9, the line head 3 is attached to the spindle 16 by moving the spindle head 6 in the Z-axis direction, and
It is extracted from the main shaft 16. A taper shank 3c is provided at one end 3a of the line bar 3. The taper shank 3c is detachably attached to the attachment portion of the main shaft 16,
The other end 3b of the line bar 3 is supported by the bar support 50. In this way, the line bar 3 is supported at both ends by the main shaft 16 and the bar support 50, and is rotated by the rotation of the main shaft 16. The other end 3b side of the line bar 3 has a common diameter D (same dimension). That is, the diameter D
Are adjusted to the smallest diameter of the plurality of types of line bars 3. Therefore, even if a plurality of types of line bars 3 are stored in the line bar magazine 7, the same bar support 50 can support the other end 3b side of the line bar 3. It should be noted that, although it is preferable that the line bar 3 is supported by the same bar support 50 with such a configuration, the line bar support portion of the bar support 50 is configured to be replaceable, and the diameter of the other end of the line bar 3 The line bar support may be replaced according to the above. The X-axis guide surface, the Y-axis guide surface 30, the Z-axis guide surface 2
Various sliding guide surfaces, various rolling guide surfaces, static pressure guide surfaces, etc. can be used as the 7 and bar support guide surfaces.

The line bar magazine 7 stores a plurality of line bars 3 arranged in a matrix in a direction parallel to the Z-axis direction. Line bar magazine 7
Is a magazine base 60 and at least one (here,
It has five tool cassettes 61 and tool cassette moving means 62. The magazine base 60 has a floor surface 15
And is arranged outside the splash guard 21. The tool cassette 61 is movably provided on the magazine substrate 60, and at least one (here, three at maximum) line bar 3 can be placed. In the tool cassette 61, three line bar storage positions G1, G2, G3 are set in order to store the three line bars 3. The tool cassette moving means 62 is the magazine base 6
It is provided at 0 and moves the tool cassette 61 to the carry-in / out position P1. A plurality of tool cassettes 61 (here, five) are provided on the magazine base body 60 so as to overlap in the V-axis direction (vertical direction) parallel to the Y-axis direction, and are moved in the V-axis direction by the tool cassette moving means 62. It is possible.

Above the ceiling portion 63 of the splash guard 21, a guide means 64 having a pair of guide rails 65 is provided.
Are arranged. The guide means 64 extends from the line bar magazine 7 to above the processing area 20 and is parallel to the X-axis direction.
It is extended in the axial direction. The two guide rails 65 are
They are arranged parallel to each other and horizontally in the U-axis direction. U
The axial direction is orthogonal to the V-axis direction. The line boring bar transfer means 8 guides the tool cassette 61 by the guide means 64 to move the tool cassette 61 above the ceiling 63 in the U-axis direction. That is, the tool cassette 61 is guided by the guide means 64 in a state of being connected to the line bar transfer means 8, and moves in the U-axis direction above the ceiling portion 63.
It waits at a standby position P7 near the line bar exchange position P2. Further, the tool cassette 61 can be detached from the line bar transfer means 8 when moved to the carry-in / out position P1.

As shown in FIGS. 7 to 9, the line bar 3 has the same or different structure in order to perform line boring at the same time or in a plurality of holes 12 of the same or different shapes on the workpiece 2. One or more bytes 3
d is attached. The tool cassette 61 has an upper plate 66 and a lower plate 67 arranged in parallel with each other, and one or a plurality (here, two) connecting plates 68 for connecting and fixing both plates 66, 67. is doing. Three sets of supporting means 69 are attached to the lower plate 67. The support means 69 is the first support member 7 having a pair of engaging portions.
0 and two second support members 71 at two positions (a total of four). The first support member 70 supports the flange portion 3e of the taper shank 3c of the line bar 3 and engages with the V groove 3f of the flange portion 3e, so that the line bar 3 does not move in the direction of the axis CL2. Be positioned at. The second support member 71 supports the line bar body 3g to which the cutting tool 3d and the like are attached.

The support means 69 also has a third support member 72 mounted between the pair of engaging portions 70a, 70a of the first support member 70 and attached to the lower plate 67. The third support member 72 is engageable with and disengageable from the key groove of the flange portion 3e of the line bar 3. The second support member 71 adjusts the height h from the lower plate 67 and the like so that the axis of the line bar 3 becomes parallel to the axis of the main shaft 16 even if the diameter D1 of the line bar main body 3g changes. I am trying to become. In this embodiment,
Although the axis of the line bar 3 is made parallel to the axis of the main shaft 16 by adjusting the height of the spacer 71c, the tapered shaft 71b is replaced with the tapered shaft 71.
The movement may be adjusted in the axial direction of b.

Therefore, the line bar 3 has the first and second lines.
The third support member 7 engaged with the key groove so as not to roll laterally by the support members 70 and 71 and to move in the central axis CL2 direction by the first support member 70.
2 so as not to rotate around the central axis CL2,
Each is positioned. In this way, at the line bar storage positions G1, G2, G3 of the tool cassette 61,
Up to three line bars 3 can be placed side by side in parallel. If the line bar 3 is lifted by a predetermined distance from the support means 69, the first, second, and third support members 7
It leaves from 0,71,72. In this state, the line bar 3 can be moved in the direction of the central axis CL2 and pulled out from the tool cassette 61 or supplied to the tool cassette 61 and mounted.

Rolling means 73 is provided on the upper plate 66, and the rolling means 73 rolls while being guided by the guide means 64. The rolling means 73 are provided in two sets on each side surface of the rectangular upper plate 66, two sets each, for a total of four sets. Each rolling means 73 has three rollers 74, and the rollers 74 roll while engaging with the guide groove 65 a of the guide rail 65. Laura 7
4 is located inside the guide groove 65a and rolls in a state where movement in the Y-axis direction and the Z-axis direction is restricted. The rolling means 73 is in the moving direction of the tool cassette 61 (X axis direction).
Since two sets are arranged on the left and right, the tool cassette 61 reciprocates in the X-axis direction while being suspended by the pair of guide rails 65. The rolling means 7
The guide 3 may be guided by other guides such as static pressure guide or a combination of slide guide and rolling guide. Upper plate 6
A pair of engaged holes 75 for connecting to the line bar transfer means 8 are formed at the end portion on one side (spindle head 6 side) of 6. The engaged hole 75 is formed so as to open to the lower surface side of the upper plate 66.

As shown in FIGS. 1 to 3, 6 and 7, the line bar transfer means 8 comprises a transfer means main body 80 and a drive motor 81 for traveling attached to the transfer means main body 80.
And a pinion 81a (FIG. 3) that is rotationally driven in the forward and reverse directions by the traveling drive motor 81, and a rolling means 73 provided at the bottom of the transfer means main body 80. The machine body of the machine tool 1 is provided with a rack 81b (FIG. 3) extending in parallel with the guide rail 65. This rack 81
b is meshed with the pinion 81a, and is arranged so as to extend in the X-axis direction so as to move the line bar transfer means 8 in the X-axis direction. A total of four sets of rolling means 73, one pair each on the left and right, are attached to the lower portion of the line bar transfer means 8, and these rolling means 73 also have rollers 74. This roller 74 is also the roller 7 of the rolling means 73 of the tool cassette 61.
4, the guide groove 65a of the guide rail 65 (FIG. 8)
Due to this, rolling is performed in a state where movement in the Y-axis direction and the Z-axis direction is restricted. Pin support part 1 provided on one side of transfer means body 80 (line bar magazine 7 side)
A pin 82 as an engaging piece is attached to 35 (FIG. 10). The pin 82 is attached to the pin support portion 135 so as to project upward, and engages with the engaged hole 75 of the tool cassette 61 so that the pin 82 can be engaged and disengaged. When the pin 82 is engaged with the engaged hole 75, the tool cassette 61 is connected to the line bar transfer means 8. Also, the tool cassette 61
However, if the pin 82 is slightly lifted with respect to the line bar transfer means 8, the pin 82 is disengaged from the engaged hole 75, so that the tool cassette 61 is separated from the line bar transfer means 8.

When the traveling drive motor 81 is controlled with the tool cassette 61 connected to the line bar transfer means 8, the tool cassette 61 is moved to the carry-in / out position P1, the standby position P7, and the line bar exchange position P2. Each can be transported and positioned. At the line bar replacement position P2, the tool cassette 61 can be positioned at three positions by moving a little distance in the X-axis direction. Therefore, at the line bar exchange position P2, the desired line bar 3 of the three line bars 3 placed on the tool cassette 61 can be positioned so as to substantially coincide with the axis CL of the main shaft 16. Further, when the line bar 3 mounted on the spindle 16 is returned to the tool cassette 61, three line bar storage positions G1 and G on the tool cassette 61 are used.
Of G2 and G3, the empty line bar storage position can be made substantially coincident with the axis line CL of the main shaft 16. Since the positions of the spindle 16 in the X-axis direction and the Y-axis direction at the line bar exchange position P2 are almost the same as the positions of the spindle 16 in the X-axis direction and the Y-axis direction at the tool exchange position P3, When the line bar 3 is attached / detached, the spindle head 6 is moved mainly in the Z-axis direction at the line bar exchange position P2. The line bar transfer means may transfer the tool cassette 61 by a combination of a traveling drive motor and a screw mechanism, or by driving a linear motor or the like.

The tool cassette 61 is located outside the splash guard 21. Therefore, at the line bar replacement position P2, when the line bar 3 is replaced, the main shaft 16
(Or, an opening (not shown) for passing the main shaft 16 and the main shaft head 6 is provided in the splash guard 21. A shutter 83 that can open and close the opening is provided near the opening. The shutter 83
It can be moved in the X-axis direction and is always moved in the closing direction by a spring. The opening / closing operation of the shutter 83 is automatically performed in conjunction with the moving operation of the line bar transfer means 8. When the line bar transfer means 8 moves and the tool cassette 61 reaches the line bar exchange position P2, the tool cassette 6
The shutter 83 pushed by 1 moves in the opening direction against the biasing force of the spring. That is, the shutter 83 automatically opens in conjunction with the movement operation of the tool cassette 61. The opening is opened by the shutter 83 only when the tool cassette 61 is moved to the line bar exchange position P2, and when the tool cassette 61 is moved to another position, the opening is closed by the biasing force of the spring, and chips and cutting oil are added. Are not scattered to the outside of the splash guard 21. Although the shutter 83 has been described as being opened / closed in conjunction with the movement operation of the line bar transfer means 8, it may be provided with a drive means such as a shutter opening / closing cylinder and opened / closed by this cylinder. At the line bar exchange position P2, the main shaft 16 can move in the Z-axis direction and slightly in the Y-axis direction between the processing region 20 and the position of the one end 3a of the line bar 3 in the tool cassette 61. Line bar 3 for main shaft 16
When the attachment / detachment operation is completed and the tool cassette 61 is pushed by the line bar transfer means 8 and separated from the line bar exchange position P2, the shutter 83 is automatically closed by the biasing force of the spring.

As shown in FIGS. 1 to 5 and 7 to 10, in the line bar magazine 7, the magazine base 60 is used.
The moving unit 90 is arranged in the position so as to be movable in the V-axis direction. The moving unit 90 can accommodate a plurality of (here, five) tool cassettes 61. Therefore, the moving unit 90 has five sets of magazine side guide rails (hereinafter, referred to as magazine side rails) 91. The magazine-side rail 91 is U parallel to the X-axis direction.
They are arranged horizontally in the axial direction and are parallel to each other in the V-axis direction. The magazine side rail 91 has substantially the same structure as the guide means 64. Tool cassette 61
Is supported by being suspended from the magazine-side rail 91. The rolling means 73 of the tool cassette 61 engages with the magazine side rail 91 to perform rolling motion. The moving unit 90 can also store six or more tool cassettes 61 by adding a magazine-side rail 91 and the like.

The tool cassette 61 is a moving unit 90.
In the state of being stored in, the holding means 130 holds the magazine-side rail 91 in a state in which it is positioned so as not to move. The holding means 130 is
The engaged member 132 provided on the moving unit 90 (or the magazine side rail 91) and having the engaged portion 136 formed therein.
have. An engaging member 131 is provided on the upper plate 66 of the tool cassette 61 so as to be tiltable about a shaft 134. The engaging member 131 includes the upper portion 137 and the engaged portion 1
The spring 133 is constantly biased in the direction in which 36 is engaged. When the line bar transfer means 8 and the tool cassette 61 are connected, the pin 8 attached to the pin support portion 135
2 engages with the engaged hole 75, and the pin support portion 13
5 presses the lower portion 138 of the engaging member 131. Then,
The engaging member 131 tilts, and the engaging member 131 and the engaged portion 1
The engagement with 36 is released, and the holding of the tool cassette 61 by the holding means 130 is released. That is, the tool cassette 61 moves the line bar transfer means 8 at the loading / unloading position P1.
When it is movable between the magazine side rail 91 and the guide means 64, the holding means 130 releases the holding of the tool cassette 61. As a result, the tool cassette 61 can be moved between the line bar magazine 7 and the guide means 64 while being connected to the line bar transfer means 8. The holding means 130 capable of holding the tool cassette 61 is configured such that an engaging member can be engaged with and disengaged from the tool cassette 61 by a driving means such as a cylinder, and engages the engaging member when holding the tool cassette 61. It may be combined.

The moving unit 90 is moved up and down in the V-axis direction by the tool cassette moving means 62 to position the tool cassette 61, in which the line bar 3 designated by the line bar exchange command is stored, at the carry-in / out position P1. . Then, at the carry-in / out position P1, the moving unit 90 moves the desired height position of the magazine-side rail 91 to the guide rail 6
The height position of 5 is almost matched. When connecting or disconnecting the line bar transfer means 8 and the tool cassette 61, the moving unit 90 is moved up and down by a slight distance. As a result, the pin 82 of the line bar transfer means 8 engages and disengages from the engaged hole 75 of the tool cassette 61, so that the tool cassette 61 is connected to and released from the line bar transfer means 8. .

The magazine base body 60 is provided with a pair of parallel V-axis guide rails 92 in the V-axis direction (vertical direction). The two V-axis guide rails 92 are arranged side by side in the lateral direction and extend in the V-axis direction. The V-axis guide rail 92 and the slide bodies 93, 93 constitute a linear motion rolling guide, and the line bar magazine guide portion 9
Make up 4. Guide section for line bar magazine 94
Are provided substantially symmetrically with respect to the axis CL3 of the tool cassette moving means 62. The line bar magazine guide unit 94 may be other rolling guides, sliding guides, static pressure guides, or the like. The moving unit 90 is guided by the line bar magazine guide portion 94 and moves in the V-axis direction. A total of four slide bodies 93, 93 are fixed at predetermined positions on one surface of the moving unit 90. The moving unit 90 is guided and supported by two V-axis guide rails 92, and is arranged so as to be movable in the V-axis direction via the slide bodies 93, 93.

Between the two V-axis guide rails 92, V
The shaft 95 of the ball screw for the shaft is the V-axis guide rail 92
It is arranged in parallel with. A nut 96 fixed to the moving unit 90 is screwed into the screw shaft 95. Both ends of the screw shaft 95 are one bearing device 9 having a built-in bearing.
7 and the other bearing device 98 are rotatably supported. The screw shaft 95 is a V attached to the magazine base 60.
The output shaft of the axis servo motor 99 is connected by a connecting member 100, and is rotationally driven in the forward and reverse directions by the V axis servo motor 99. The V-axis servomotor 99 is provided with a screw shaft 95 via a transmission mechanism such as a toothed pulley and a toothed belt mechanism.
The driving force may be transmitted to the. Further, the moving unit 90 may be moved by a combination of a drive motor (or a control motor) and a rack and pinion mechanism, a linear motor, or the like.

When the screw shaft 95 is rotated by being driven by the V-axis servomotor 99, the moving unit 90 to which the nut 96 is fixed is guided and supported by the V-axis guide rail 92 to move in the V-axis direction. Therefore, the moving unit 90 can be moved and positioned in the V-axis direction so that the magazine-side rail 91 that suspends the desired tool cassette 61 matches the guide rail 65 at the carry-in / out position P1. As a result, at the loading / unloading position P1, the tool cassette 61 is moved to the magazine side rail 91 and the guide rail 65.
And the line bar magazine 7 and the spindle 16 can be exchanged with each other. When the line bar 3 is to be set up for the line bar magazine 7, the tool cassette moving means 62 is driven to lower the moving unit 90 to a predetermined lower position. By doing this, the desired tool cassette 61
Can be stopped at a low height position where setup change work is easy, and thus the work load is reduced. The tool cassette moving means may be driven by a combination of a drive motor and a rack and pinion mechanism, a linear motor, a cylinder device, or the like.

The ATC 17 has a tool magazine 9 and a tool changing arm 110 of a twin arm type.
The tool magazine 9 is provided on the side of the bed 14.
The tool exchanging arm 110 detachably grasps the tool 4 by one of the grasping portions 111 and the other grasping portion 112, and performs a tool exchanging operation between the tool magazine 9 and the spindle 16. The one gripping portion 111 and the other gripping portion 112 perform a swiveling operation about the swivel shaft 113 of the tool exchanging arm 110, and also perform an advancing / retreating movement operation in the axial direction of the swivel shaft 113. The tool exchange arm 110 swings around the swing shaft 114 to a position P8 on the tool magazine 9 side and a tool exchange position P3 on the main shaft 16 side. As a result, the one gripping portion 111 and the other gripping portion 112 perform the exchanging operation of the tool 4 with respect to the storage pot positioned at the position P8 on the tool magazine 9 side and the spindle 16 positioned at the tool exchanging position P3. To do.

Next, the operation of the machine tool 1 will be described. N with programmed procedure for cutting workpiece 2
The C (numerical control) program is stored in advance in the NC program memory of the NC device 11. The NC device 11 is
A required NC program is called from the NC program memory to control the machining operation of the machine tool 1. Machine tool 1
Then, the case where the hole 12 of the workpiece 2 is subjected to the line boring will be described. In this case, in order to prepare for mounting the line bar 3 to be used next on the spindle 16, the tool cassette moving means 62 of the line bar magazine 7 uses the tool cassette 6 in which the line bar 3 to be used is stored.
1 is moved slightly above the guide means 64 at the carry-in / out position P1. On the other hand, the line bar transfer means 8 also includes the guide means 64.
And is moved to the loading / unloading position P1. Carrying in / out position P1
Then, the moving unit 90 descends by a slight distance, so that the pin 82 engages with the engaged hole 75 and the tool cassette 61 is connected to the line bar transfer means 8. Further, since the holding means 130 of the moving unit 90 operates in the holding release side in conjunction with the connecting operation, the tool cassette 61 is released from the holding of the moving unit 90 and can be moved. Then, by driving the line bar transfer means 8, the tool cassette 61 on which the line bar 3 to be used is placed is transferred from the carry-in / out position P1 to the standby position P7.
When the line bar 3 or the tool 4 is processing at the processing position P4, the tool cassette 61 waits at the standby position P7.

For example, when the line boring process is performed by the line bar 3, when the predetermined process is completed, the NC device 11 outputs a line bar replacement command. The line bar transfer means 8 is driven to transfer the tool cassette 61 from the standby position P7 to the line bar exchange position P2, and the empty line bar storage position of the tool cassette 61 is
The axis line CL of the main shaft 16 is made to substantially coincide. This operation causes the shutter 83 to open. The Z-axis servo motor 29 is driven by the line bar replacement command to move the spindle head 6 backward in the Z-axis direction, and the Y-axis servo motor 32 is driven to move the spindle head 6 from the machining position P4 to the line bar. Raise to the height position of the exchange position P2. On the other hand, in the tool cassette 61, at least one of the three line bar storage positions G1, G2, and G3 is empty to receive the line bar 3 from the spindle 16. Next, by moving the spindle head 6 forward in the Z-axis direction, the used line bar 3 is stored in the desired line bar storage position of the tool cassette 61. With the position of the flange portion 3e of the line bar 3 in the Z-axis direction aligned with the position of the first support member 70 of the tool cassette 61, the spindle head 6 is slightly lowered in the Y-axis direction. Then,
The line bar 3 is mounted on the tool cassette 61 while being supported by the supporting means 69. Next, when the clamp / unclamp mechanism of the spindle 16 is operated to bring the line bar 3 into an unclamped state, the spindle head 6 can be separated from the line bar 3 and retracted in the Z-axis direction.

In this way, after the spindle head 6 is slightly retracted in the Z-axis direction, the line bar transfer means 8 is driven so that the position of the line bar 3 to be used substantially coincides with the line bar exchange position P2. The cassette 61 is moved in the X-axis direction and positioned. Next, when the spindle head 6 is moved forward in the Z-axis direction, the taper shank 3c of the line bar 3 is mounted on the mounting portion of the spindle 6. Then, the clamp / unclamp mechanism of the main shaft 16 is operated to clamp the line bar 3. Then, the spindle head 6 is slightly moved up in the Y-axis direction to slightly lift the line bar 3 and support means 6
Separate from 9. Then, when the spindle head 6 is retracted in the Z-axis direction by a distance longer than the length dimension of the line bar 3, the entire line bar 3 is extracted from the tool cassette 61.
During the replacement operation of the line bar 3 at the line bar replacement position P2, since the shutter 83 is open, the spindle head 6 and the like can be moved. After the replacement operation of the line bar 3,
When the line bar transfer means 8 moves from the line bar exchange position P2 to the standby position P7 side, the shutter 83 is closed and the processing area 20 is sealed in conjunction with this moving operation. After that, if the spindle head 6 is moved to the machining position P4, the next line boring machining by the line bar 3 can be performed.

When performing line boring, the line bar 3 having one end attached to the main shaft 16 is inserted into the hole 12 of the workpiece 2, and then the other end of the line bar 3 is inserted into the bar support 50. In this way, with the one end and the other end of the line bar 3 supported, the main shaft 16 is moved to the main shaft motor 3
It is rotationally driven by 3. Then, the Z-axis servo motor 2
9, the spindle head 6 is controlled to move in the Z-axis direction, and the rotational speed of the spindle 16 is controlled. As a result, in the processing area 20, the bite 3d of the rotating line bar 3
The hole portion 12 of the workpiece 2 can be subjected to line boring processing, for example.

On the other hand, the tool cassette 61 is moved from the line bar exchange position P2 to the standby position P7 by the line bar transfer means 8 and stands by until the next line bar exchange command is output. When the next line bar exchange command is output and the designated line bar 3 is placed on the tool cassette 61 waiting at the standby position P7, the tool cassette 61 moves from the standby position P7 to the line bar. The line bar 3 is replaced by moving to the replacement position P2 again. Since the standby position P7 is near the line bar exchange position P2, the exchange time of the line bar 3 can be shortened. When the line bar 3 designated by the line bar exchange command is not at the standby position P7, the tool cassette 61 waiting at the standby position P7 is transferred to the loading / unloading position P1 by the line bar transfer means 8 and the line bar 3 is transferred. Magazine 7
It is stored in the moving unit 90. Next, the tool cassette moving means 62 moves the tool cassette 61 in which the designated line bar 3 is stored to the carry-in / out position P1, and the line bar transfer means 8 moves the tool cassette 61.
Is transferred to the line bar exchange position P2. The line bar 3 thus transferred is exchanged at the line bar exchange position P2 and mounted on the spindle 16.

In this way, it is possible to replace the line bar 3 with another line bar 3. By operating the ATC 17 as well, replacement of the line bar 3 with the tool 4 for one main spindle 16, By freely changing the tool 4 to the line bar 3 and from the tool 4 to another tool 4, various kinds of machining can be sequentially and automatically performed on the workpiece 2. Line bar replacement position P2 is located at almost the same position as tool replacement position P3 in the X-axis and Y-axis
Is set, so especially from the line bar 3 to the tool 4
In the case of the replacement of the tool 4 with the line bar 3, the spindle head 6 may be moved in the Z-axis direction. Since the distance traveled by the spindle head 6 is short, the replacement time of the line bar 3 and the tool 4 can be shortened.

When line boring is performed by the line bar 3, the line bar 3 is supported by both ends. The line bar 3 is rotated to control the spindle head 6 to move in the Z-axis direction. As a result, the line bar 3 can be subjected to a line boring process with high accuracy in roundness, concentricity, and the like. When the line boring process is completed, the evacuation of the bar support 50 is instructed. By this command,
Since the bar support 50 moves from the support position P5 to the retracted position P6 and retracts, it is possible to prevent interference by the bar support 50. When the tool 4 is mounted on the spindle 16 and the workpiece 2 is subjected to normal cutting, the X-axis servo motor 44 controls the movement of the table 26 in the X-axis direction, and the Y-axis servo motor 32 and the Z-axis are used. The spindle servomotor 29 controls the movement of the spindle head 6 in the Y-axis direction and the Z-axis direction, respectively. As a result, the tool 4 moves relative to the workpiece 2 in the directions of three orthogonal axes, and normal cutting is performed.

When the line boring process by the line bar 3 and the normal cutting process by the tool 4, if necessary, are completed, the pallet replacement command of the NC program causes
The PC 10 executes a pallet exchange operation. APC10
Exchanges the pallet 45 on which the unprocessed workpiece 2 is mounted and placed on the setup table 47 and the pallet 45 on which the processed workpiece 2 is mounted and placed on the table 26. In this way, after the pallet 45 to which the unprocessed workpiece 2 is attached is placed on the table 26, the same operation as described above is repeated to perform line boring processing or normal cutting processing on this workpiece 2. It will be.

As described above, in the machine tool 1 of the present invention,
The line bar magazine 7 and the tool magazine 9 are provided at predetermined positions outside the splash guard 21, respectively. Therefore, even during processing, the line bar magazine 7 and the tool magazine 9 can be easily changed over. Further, since there is no restriction on the number of line bars 3 and tools 4 to be stored, a large number of line bars 3 and tools 4 can be stored (stored) in the line bar magazine 7 and the tool magazine 9, respectively. The machine tool 1 uses the moving operation of the spindle head 6 that can move at high speed to attach and detach the line bar 3 to and from the spindle 16. Further, since the tool cassette 61 on which the line bar 3 to be used next is placed is waiting at the standby position P7 near the line bar exchange position P2, from the standby position P7 to the line bar exchange position P2. You can move in a short time. Therefore, the exchange operation of the line bar 3 is performed at high speed, the line bar 3 can be attached to and detached from the main shaft 16 in a short time, and the non-cutting time for exchanging the line bar 3 can be shortened.

In the present invention, the machine tool 1 is provided with the line bar magazine 7, the ATC 17, the APC 10, etc., and the line bar 3, the tool 4, and the pallet 45 are automatically replaced, so that the machine tool 1 is automated. It is also possible to configure a machining system or the like with the machine tool 1. The machine tool 1 can perform multiple types of line boring by the function of the line boring machine.
It also has a function equivalent to. Therefore, a desired tool 4 of a plurality of types of tools is mounted on the spindle 16, and the hole 12 of the workpiece 2 is bored, and the rough machining, semi-finishing and finishing of the hole 12 and the machining plane are performed. It is also possible to perform a plurality of types of normal cutting processing. As a result, the machine tool 1 can automatically perform a plurality of types of machining with one setup change operation. Moreover, since the line bar 3 is three-dimensionally stored, the installation area can be made compact. Tool cassette 61 and line bar transfer means 8
Moves outside the splash guard 21, so that it is not affected by chips and cutting fluid in the processing area 20. In the drawings, the same reference numerals indicate the same or corresponding parts.

[0052]

Since the present invention is configured as described above, the line boring bar storage magazine and the tool magazine, particularly the line boring bar storage magazine, can be easily set up and changed even during processing. There is no restriction on the number of bars that can be stored.

[Brief description of drawings]

1 is a view showing an example of an embodiment of the present invention, and FIG. 1 is a front view of a machine tool for combined machining.

FIG. 2 is a plan view of the machine tool for combined machining.

FIG. 3 is a left side view of the machine tool for combined machining.

4 is a view taken along the line IV-IV of FIG.

5 is a view taken along the line VV of FIG.

FIG. 6 is a view taken along line VI-VI of FIG.

FIG. 7 is an enlarged view showing a state where the line boring bar transfer means is transferring the tool cassette in FIG. 6;

FIG. 8 is a view on arrow VIII showing the tool cassette of FIG.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a sectional view showing a holding means capable of holding a tool cassette.

[Explanation of symbols]

1 Machine tools for combined machining 2 Work pieces 3 line bowling bar 3a One end 3b The other end 4 tools 5 Machine body 6 spindle head 7 line bowling bar storage magazine 8 line boring bar transfer means 9 tool magazine 12 holes 14 beds (airframe) 16 spindle 17 Automatic tool changer 20 Processing area 21 Splash Guard 25 columns 26 table 40 table device 45 pallets 50 bar support 60 magazine base 61 tool cassette 62 Tool cassette moving means 63 ceiling 64 guide means CL axis D diameter P1 loading / unloading position P2 line boring bar replacement position P3 Tool change position P5 support position P6 retracted position X-axis direction Third direction Y-axis direction Second direction Z-axis direction First direction

Claims (7)

[Claims] 1. A compound machining work for performing line boring on a hole of a work with a line boring bar and performing a process other than the line boring on the work with a tool different from the line boring bar. A machine rotatably supporting a spindle and movable with respect to the workpiece in at least a first direction parallel to the axis of the spindle and a second direction orthogonal to the first direction. A state in which the spindle head and the machine body of the machine tool for combined machining are provided at a predetermined position outside the splash guard that covers the machining area and the line boring bar is oriented in a direction parallel to the first direction. A line boring bar storage magazine that can be stored with, and a carry-in / out position for carrying in and carrying out the line boring bar with respect to the line boring bar storage magazine, Line boring bar transfer means for transferring the line boring bar between the line boring bar exchange position for exchanging the line boring bar with respect to the spindle, and the splash attached to the machine body. A tool magazine which is provided at another predetermined position outside the guard and can store the tool, and an automatic tool changer for exchanging the tool between the tool magazine and the spindle. Machine tools for combined machining. 2. The machine tool for combined machining according to claim 1, wherein the machine body is a column provided on the machine body of the combined machining machine tool so as to be movable in the substantially horizontal first direction. And a spindle head provided on the column so as to be movable in a substantially vertical second direction, and provided on the machine body so as to be movable in a third direction orthogonal to both the first and second directions, A table or a pallet on which the workpiece is placed, and the line boring bar replacement operation with respect to the spindle is performed at the third tool replacement position where the tool replacement operation is performed.
And the second direction, the line boring bar replacement position is set to be substantially the same as the second direction, and the main spindle head is moved by a moving operation. 3. The machine tool for combined machining according to claim 1 or 2, wherein the line boring bar storage magazine is provided on a magazine base and movably on the magazine base, and at least one of the lines. A composite comprising at least one tool cassette on which a boring bar can be placed, and tool cassette moving means provided on the magazine base and capable of moving the tool cassette to the carry-in / out position. Machine tools for processing. 4. The machine tool for combined machining according to claim 3, wherein the tool cassette is capable of mounting a plurality of the line boring bars and is arranged in a direction parallel to the second direction. A plurality of tools are provided in the magazine base so as to overlap each other, and the tool cassette moving means moves the tool cassette in a direction parallel to the second direction. machine. 5. The machine tool for combined machining according to claim 3, wherein a guide means is provided above the ceiling portion of the splash guard from the line boring bar storage magazine to above the machining area. The line boring bar transfer means extends in a third direction, and causes the tool cassette to be guided by the guide means to move the tool cassette above the ceiling portion in the third direction. Machine tools for combined machining. 6. The machine tool for combined machining according to any one of claims 1 to 5, wherein a table device having a table or a pallet on which the workpiece is placed has one end on the spindle. A bar support capable of supporting the other end of the mounted line boring bar is provided so as to be movable between a support position and a retracted position, and the line boring bar is mounted on the main shaft. Sometimes it moves to the support position,
A machine tool for combined machining, wherein when the tool of a different type from the line boring bar is mounted on the spindle, the tool is moved to the retracted position. 7. The machine tool for combined machining according to claim 6, wherein the line boring bar storage magazine can store a plurality of types or the same type of the line boring bars, A machine tool for combined machining, characterized in that the other end can be supported by the same bar support by making the diameter common.