JP7280100B2 - Hose piping structure and machine tools - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose piping structure for connecting a plurality of hoses in a narrow space, and a machine tool having the hose piping structure.

In a machine tool, for example, compressed air or coolant is sent to a turret device, and lubricating oil is supplied to a drive section for moving the turret. In order to send such various fluids, a fluid circuit is configured inside the machine tool, and hoses are used to supply the fluid to the moving parts such as the slide table. Since the distance between the movable part and the fixed part changes according to the movement of the movable part, various hoses therebetween are bent in a U-shape. In the piping structure described in Patent Document 1 below, wiring and piping are attached at predetermined intervals to the horizontal frame portion of the first mounting frame provided on the fixed base side, and the first slide base provided on the first slide base is attached to the horizontal frame portion. 2. Wiring and piping are attached to the horizontal frame portion of the mounting frame at predetermined intervals.

JP 2017-100236 A

The hoses attached to the fixed part side and the movable part side are arranged in a U-shape as described above so that the slide table can be moved. In the conventional example, the distance between the hoses and the like attached to the horizontal frame is narrowed for compactness, although the attachment structure is not clear. On the other hand, as a piping structure different from such a conventional example, a joint block is used to relay hoses that create a flow path.

In the piping structure of such a relay part, there is one in which the spout at the tip of the hose is fixed to the joint side with a nut, and tightening work using a wrench is required in the final process of connecting the hose. However, if the joint portion is configured to be small in a narrow space, the distance between the mouthpieces of a plurality of hoses will be close, which may make it difficult to use a wrench. On the other hand, if the joint portion is made large, it becomes difficult to secure a space for feeding the hose.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hose piping structure that is compact and can be tightened, and a machine tool having the hose piping structure.

A hose piping structure according to one aspect of the present invention includes hoses that are connected by tightening a nut on a mouth fitting provided at a tip, a plurality of joint blocks that are formed with connection flow paths that connect the connected hoses, a plurality of a bracket for supporting the joint block, a screw member with a head for fixing the joint block to the bracket, and a plurality of the joint blocks are overlapped and fixed by tightening the screw member, and the screw member block mounting means for separating the plurality of joint blocks by loosening the tightening of the joint blocks , and the block mounting means has a plurality of elongated holes in the bracket in the direction in which the joint blocks overlap each other. The screw member passing through the long hole is tightened into the screw hole of the joint block, and the joint block is formed so that the connection portion with the hose faces downward, and a plurality of screws are formed on the bracket. Among the elongated holes, the elongated holes through which adjacent screw members are passed are common . Alternatively, a hose connected by tightening a nut on a spout provided at the tip, a plurality of joint blocks formed with connection flow paths connecting the connected hoses, and a bracket supporting the plurality of joint blocks. a screw member with a head for fixing the joint block to the bracket; a plurality of the joint blocks are overlapped and fixed by tightening the screw member; block mounting means for separating the joint blocks from each other, wherein the block mounting means includes a mounting through hole formed in the joint block, a screw hole formed in the bracket, and the screw member. is a half screw with a hexagonal hole having a thread at the tip, and the through holes are longer than the thickness dimension of the two or more overlapping joint blocks, and the joint blocks are L-shaped. A connection flow path is formed, and the through holes are formed in two locations across the connection flow path in a direction perpendicular to the L-shaped surface, and the bracket includes a plurality of the joint blocks arranged at different levels. The screw holes are obliquely formed so as to be arranged in the .

A machine tool according to one aspect of the present invention includes a spindle device that rotates a gripped workpiece, a turret device that executes turning indexing of a plurality of tools attached to a tool rest, and a tool of the turret device that moves in a machining axis direction. A driving device for moving, a control device for controlling the driving of each device, and a hose piping structure for passing a hose between a sliding member and a fixed member of the driving device, wherein the hose piping structure is , a hose connected by tightening a nut on a mouth fitting provided at the tip, a plurality of joint blocks having connection flow paths for connecting the connected hoses, and attached to the slide member and the fixed member. a bracket for supporting a plurality of said joint blocks; a screw member with a head for fixing said joint block to said bracket; block mounting means for separating the plurality of joint blocks by loosening the tightening of the screw member , wherein the block mounting means has long holes in the bracket in a direction in which the joint blocks overlap each other. is formed, and the screw member passing through the long hole is tightened into the screw hole of the joint block, and the joint block is formed in the bracket so that the connecting portion with the hose is formed downward. Of the plurality of elongated holes, the elongated holes through which adjacent screw members are passed are common . Alternatively, a spindle device that rotates a gripped workpiece, a turret device that performs turning indexing of a plurality of tools attached to a tool table, a drive device that moves the tools of the turret device in the machining axis direction, and each of the above A control device for controlling the driving of the device, and a hose piping structure for passing a hose between the sliding member and the fixed member of the driving device, wherein the hose piping structure has a port provided at the tip. A hose connected by tightening a nut of a metal fitting, a plurality of joint blocks formed with connection flow paths connecting the connected hoses, and attached to the slide member and the fixed member to support the plurality of joint blocks. a headed screw member for fixing the joint block to the bracket; and by tightening the screw member, the plurality of joint blocks are overlapped and fixed, and the screw member is loosened. block mounting means for separating the plurality of joint blocks, wherein the block mounting means includes through holes for mounting in the joint blocks, screw holes in the bracket, and screw holes in the bracket. The threaded member is a half screw with a hexagonal hole having a threaded tip, and the through holes are longer than the thickness dimension of the two or more overlapping joint blocks, and the joint block is L A connecting channel is formed in a letter shape, and the through holes are formed in two locations across the connecting channel in a direction orthogonal to the L-shaped surface, and the bracket includes a plurality of the joint blocks. The screw holes are formed obliquely so that the are arranged in a staggered manner.

According to the above configuration, the plurality of joint blocks are overlapped and fixed by tightening the screw member, and the plurality of joint blocks are separated from each other by loosening the tightening of the screw member, so that the tightening of the screw member is loosened. In this case, it is possible to tighten the nut of the hose fitting using a wrench with the multiple joint blocks separated from each other, and by tightening the screw member, the multiple joint blocks can be brought into contact with each other to make it compact. .

It is a side view showing the internal structure of the machine tool. It is the perspective view which showed the hose piping structure part. It is the side view which showed the hose piping structure of the 1st relay part. It is the bottom view which showed the hose piping structure of the 1st relay part. It is a perspective view at the time of assembly|attachment which showed the hose piping structure of the 2nd relay part. It is the side view after the assembly|attachment which showed the hose piping structure of the 2nd relay part.

An embodiment of a hose piping structure and a machine tool according to the present invention will be described below with reference to the drawings. In this embodiment, a hose piping structure incorporated in a machine tool will be described. FIG. 1 is a side view showing the internal structure of the machine tool. The machine tool 1 is mounted on a movable bed 11 having wheels, and is movable in the front-rear direction along rails laid on the upper surface of the base 2 . In this embodiment, the longitudinal direction of the machine body parallel to the main axis is defined as the Z-axis direction, the vertical direction of the machine body is defined as the X-axis direction, and the width direction of the machine body is defined as the Y-axis direction.

The machine tool 1 is configured such that a spindle device 3 is mounted on a movable bed 11 and a spindle chuck 12 that holds a work W rotates. The machine tool 1 is also equipped with a turret device 4 for positioning a predetermined tool at a use position by turning indexing of the tool table 13, and a Z-axis driving device 5 for moving the turret device 4 in the Z-axis direction. An X-axis drive 6 is provided for axial movement. A machine tool 1, which is a two-axis lathe, has a Z-axis drive device 5 and an X-axis drive device 6 each having a slidable Z-axis slide 15 or X-axis slide 16, and outputs rotation of a servomotor to a ball screw mechanism. is configured to convert to linear motion by

The machine tool 1 is entirely covered with a body cover 7 or the like. Inside, there is provided a machining chamber 9 in which a spindle chuck 12 and a turret device 4 used for machining a workpiece are hermetically sealed, and machining of the workpiece W such as turning is performed. Chips and scraps are generated when the workpiece W is processed. Therefore, in the machining chamber 9, a coolant circuit including a tank, a pump, etc. is configured so that the coolant is jetted to a predetermined location for washing away chips and the like and for cooling the machining portion. The machine tool 1 is equipped with a control device 8 for controlling each drive unit such as the spindle device 3, the turret device 4, the Z-axis drive device 5 and the X-axis drive device 6.

In the Z-axis drive device 5, the Z-axis guide 14 is integrally fixed to the X-axis slide 16, and the Z-axis slide 15 is slidably incorporated in the Z-axis guide 14. As shown in FIG. The Z-axis drive device 5 mounts the turret device 4 on the front end of the Z-axis slide 15, and linearly reciprocates the tool on the tool table 13 in the Z-axis direction, which is the longitudinal direction of the machine body. The tool is also moved in the X-axis direction by driving the X-axis driving device 6 . A working fluid such as coolant or air is sent from the rear of the machine tool 1 to the front through the Z-axis slide 15 , for example, to the turret device 4 having the tool rest 13 .

In the machine tool 1 , a hose 41 sent from the rear side of the machine body is connected to the Z-axis slide 15 in order to send working fluid to the turret device 4 . FIG. 2 is a perspective view showing the hose piping structure 10 of such a machine tool 1. As shown in FIG. In this hose piping structure 10, a plurality of hoses 41 are connected via a first relay portion 20 on the control device 8 side and a second relay portion 30 on the Z-axis slide 15 side. is intended to be sent via Since the distance between the hoses 41 connected between the first relay portion 20 and the second relay portion 30 changes according to the movement of the Z-axis slide 15, the hoses 41 are suspended in a U-shape so as to have a certain amount of slack. It is in a lowered state.

By the way, between the first relay portion 20 and the second relay portion 30, a space for piping the plurality of hoses 41 is required. In particular, since the U-shape of the hose 41 is repeatedly changed by the movement of the shaft slide 15, it is necessary to secure a minimum bending radius in order to suppress deterioration occurring at the arc-shaped folded portion. Therefore, a certain distance L (see FIG. 1) must be secured between both ends of each hose 41 connected to the first relay portion 20 and the second relay portion 30 . However, the positions of the first relay portion 20 and the second relay portion 30 cannot be arbitrarily adjusted due to the configuration of the machine tool 1, and the distance L is set large especially in the case of the compact machine tool 1. was difficult.

In order to increase the interval (distance L) between both ends of the hose 41 in a limited space, the first relay portion 20 and the second relay portion 30 are moved closer to the control device 8 and the Z-axis slide 15. It is necessary to consolidate into However, in this case, the connecting portions of the plurality of hoses 41 become too close to each other, which causes a problem in the connecting work. This is because both ends of the hose 41 are connected to the joint block by tightening the nuts of the fittings 42, so if the joints of the hoses 41 are close to each other, the wrench cannot be inserted and the nuts cannot be tightened. . In this embodiment, different types of hose piping structures are configured for the first relay portion 20 on the control device 8 side and the second relay portion 30 on the Z-axis slide 15 side in order to solve such problems.

First, the hose piping structure of the 1st relay part 20 is demonstrated. 3 and 4 are a side view and a bottom view showing the hose piping structure of the first relay portion 20. FIG. The first relay portion 20 is fixed to the controller 8 side in a state in which a first bracket 21, which is a rectangular plate material, is erected with its longitudinal direction horizontal. Two rectangular parallelepiped first joint blocks 22 and 23 are attached to the first bracket 21 along the longitudinal direction, as shown in FIG. 3(a).

Each of the first joint blocks 22 and 23 is a joint in which two connection flow paths 24 are formed, and the hose 41 is connected to the primary side and the secondary side for each connection flow path 24 . Although the hoses 41 are omitted in FIGS. 3 and 4, as shown in FIG. 2, the hoses 41 are connected to the first joint blocks 22 and 23 so as to be suspended from below. A total of four joint portions 26 (26a, 26b, 26c, 26d) each comprising a connection flow path 24 and a joint fitting 25 are formed in the first joint blocks 22, 23. As shown in FIG. They are arranged in the longitudinal direction of one bracket 21 .

For example, in the case of a conventional hose piping structure, such four sets of joint portions are formed in one joint block. On the other hand, in the hose piping structure of this embodiment, the joint portions 26a, 26b and the joint portions 26c, 26d are divided into the two first joint blocks 22, 23, and each block has two sets of joint portions 26a, 26b or 26c and 26d are formed so that the interval is narrower than in the conventional art. Therefore, the first joint blocks 22 and 23 are formed small, and as shown in FIG. 3(a), the first joint blocks 22 and 23 arranged in an overlapping manner are smaller than conventional joint blocks.

The two first joint blocks 22 and 23 are screwed together by hexagon socket bolts 27 passing through long holes 211 formed in the first bracket 21 . Three long holes 211 are formed at intervals corresponding to the sizes of the first joint blocks 22 and 23, and each bolt 27 for fixing both the first joint blocks 22 and 23 is passed through the central long hole 211. . The first joint blocks 22 and 23 are fixed by tightening the bolts 27, and by loosening the bolts 27, they can move along the longitudinal direction of the long hole 211 while being supported by the first bracket 21. As shown in FIG.

Therefore, in the first relay portion 20, the hose 41 is connected as follows. The first joint blocks 22 , 23 are attached to the first bracket 21 with bolts 27 . By loosening the bolt 27, it becomes possible to move the two first joint blocks 22 and 23 to a separated position as shown in FIG. 3(b). As a result, the space between the joint portions 26b and 26c located on the central side is widened, and as described above, even if the space between the joint portions 26a and 26b is narrow and the positions of the metal fittings 42 are close to each other, as shown in FIG. A space for inserting the wrench 50 can be secured.

The primary side and secondary side hoses 41 are connected to four sets of joint portions 26a, 26b, 26c, and 26d in the two first joint blocks 22 and 23 with a gap therebetween. At that time, the nut is tightened using a wrench 50 in the final installation process, and the fitting 42 of the hose 41 is airtightly connected to the fitting 25 . After the hose 41 is attached, the first joint blocks 22 and 23 are overlapped as shown in FIG. ), where the bolt 27 is tightened and fixed.

Next, the hose piping structure of the 2nd relay part 30 is demonstrated. 5 and 6 are a perspective view during assembly and a side view after assembly showing the hose piping structure of the second relay portion 30. FIG. The second bracket 31 of the second relay portion 30 is a pentagonal frame-shaped plate material as shown, and is fixed to the Z-axis slide 15 side in an upright state. Four rectangular parallelepiped second joint blocks 32 , 32 , 33 , 33 are attached to a downward oblique side portion 311 of the second bracket 31 . Therefore, four screw holes 312 are formed in the oblique side portion 311 .

Each of the second joint blocks 32 and 33 is formed with one L-shaped connection channel 34, and a joint portion 36 is formed by fixing a pair of joint metal fittings 35 to both end openings. The primary and secondary sides of the second joint blocks 32 and 33 are connected in a direction perpendicular to each hose 41 . In the second relay portion 30, the second joint block 32 and the second joint block 33 are arranged so that the connection flow path 34 is parallel to the second bracket 31, and two of the same size are arranged. They are stacked one on top of the other and fixed. Two through-holes 301 are formed in the second joint blocks 32 and 33 at corners perpendicular to the L-shaped surface of the connecting channel 34 and straddling the connecting channel 34 .

The second joint blocks 32 and 33 are fixed to the second bracket 31 by tightening the bolts 37 passing through the through holes 301 into the screw holes 312 . The bolt 37 is a half screw with a hexagonal hole whose tip is threaded, and is longer than the thickness of the two superimposed second joint blocks 32, 32 or 33, 33 is used. Since the second joint blocks 32 and 33 are fixed at positions with different heights along the oblique side portion 311, as shown in FIG.

In the second relay section 30 as well, in the conventional hose piping structure, as in the case of the first relay section 20, four sets of joint sections are integrally formed into one joint block, and hoses are attached thereto. rice field. On the other hand, in the hose piping structure of this embodiment, the second joint blocks 32 and 33 are provided for each flow path, and the hose 41 is attached to each. When connecting the hose 41, for example, as shown in FIG. 5, the bolt 37 is loosened, the second joint blocks 32 and 33 are separated, and the hose 41 is attached to the joint fitting 35 by tightening the nut using a wrench 50. A fitting 42 is connected.

Alternatively, the bolt 37 is loosened while being screwed into the screw hole 312 of the second bracket 31 , and the second joint blocks 32 and 33 are spaced apart while being supported by the bolt 37 . A wrench 50 can be inserted in each of the gaps, and the fitting 42 of the hose 41 is connected to the fitting 35 by tightening the nut. After that, the stacked second joint blocks 32 and the second joint blocks 33 are fixed to the second bracket 31 by tightening the bolts 37 into the screw holes 312 .

Therefore, in the hose piping structure of this embodiment, the bolts 27 and 37 are tightened to overlap the first joint blocks 22 and 23, or the second joint blocks 32 and 32 and 33 and 33 are overlapped to form the first bracket 21 or the It can be integrally fixed to the second bracket 31 . On the other hand, by loosening the tightening of the bolts 27, 37, the first joint blocks 22, 23 and the second joint blocks 32, 32 or 33, 33 can be separated. Nuts can be tightened on the mouth metal fittings 42 and 36 of 41.

In the first relay section 20, the first joint blocks 22 and 23 can be moved within the range of the elongated holes 211 while being supported by the bolts 27. 3(b), the fitting 42 can be tightened with a nut, and the first joint blocks 22, 23 can be fixed at the position shown in FIG. can. In addition, since the first joint blocks 22 and 23 have a compact configuration in which the joint portions 26a and 26b or 26c and 26d are close to each other, the distance L (see FIG. 1) can be increased.

The second relay portion 30 has block mounting means for supporting the second joint blocks 32 and 33 with the bolts 37 passing through the through holes 301 , so that the loosened bolts 37 are attached to the second bracket 31 while the second joint blocks 32 and 33 are mounted. By providing a space between the two joint blocks 32 or 33 or removing the bolt 37, the nut tightening operation of the mouthpiece 42 can be easily performed. By tightening the bolts 37 to the second bracket 31 thereafter, the second joint blocks 32 and 33 can be fixed as shown in FIG. Since the second joint blocks 32 and 33 are arranged on different levels, they can be fixed at a position far from the first relay section 20 . In addition, since the first joint blocks 22 and 23 are formed for each flow path and have a compact structure, by making them far from the first relay section 20, the distance L (see FIG. 1) between both ends of the hose 41 can be reduced. ) can be made larger.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the scope of the invention.
For example, in the above embodiment, the hose piping structure and machine tool used for the two-spindle lathe shown in FIG. 1 have been described, but a different machine tool such as a machining center may be used.

DESCRIPTION OF SYMBOLS 1... Machine tool 3... Spindle device 4... Turret device 5... Z-axis drive device 6... X-axis drive device 8... Control device 10... Hose piping structure part 15... Z-axis slide 20... 1st relay part 21... 1st bracket DESCRIPTION OF SYMBOLS 22, 23... 1st joint block 30... 2nd relay part 31... 2nd bracket 32, 33... 2nd joint block 41... Hose 42... Mouth fitting

Claims (4)

A hose connected by tightening a nut on a mouth fitting provided at the tip,
a plurality of joint blocks each having a connection flow path connecting the connected hoses;
a bracket that supports the plurality of joint blocks;
a headed screw member for fixing the joint block to the bracket;
block mounting means for overlapping and fixing the plurality of joint blocks by tightening the screw member, and separating the plurality of joint blocks by loosening the tightening of the screw member;
has
The block mounting means has a plurality of elongated holes formed in the bracket in the direction in which the joint blocks overlap each other, and the screw member passing through the elongated holes is tightened into the screw hole of the joint block,
A hose piping structure in which the joint block has a downwardly connected portion connected to the hose, and the plurality of long holes formed in the bracket have a common long hole through which an adjacent screw member is passed. A hose connected by tightening a nut on a mouth fitting provided at the tip,
a plurality of joint blocks each having a connection flow path connecting the connected hoses;
a bracket that supports the plurality of joint blocks;
a headed screw member for fixing the joint block to the bracket;
block mounting means for overlapping and fixing the plurality of joint blocks by tightening the screw member, and separating the plurality of joint blocks by loosening the tightening of the screw member;
has
In the block mounting means, a through hole for mounting is formed in the joint block, a screw hole is formed in the bracket, and the screw member is a half screw with a hexagonal hole having a threaded tip. , the through holes are longer than the thickness dimension of the two or more joint blocks in which the through holes are overlapped,
The joint block is formed with an L-shaped connection channel, and the through holes are formed in two locations across the connection channel in a direction orthogonal to the L-shaped surface, and the bracket is , a hose piping structure in which the screw holes are obliquely formed so that the plurality of joint blocks are arranged in a staggered manner . a spindle device that rotates the gripped workpiece;
a turret apparatus for performing swivel indexing for a plurality of tools mounted on a tool bed;
a driving device for moving the tool of the turret device in the machining axis direction;
a control device for controlling the driving of each device;
a hose piping structure for passing a hose between the slide member and the fixed member of the drive device;
The hose piping structure includes:
A hose connected by tightening a nut on a mouth fitting provided at the tip,
a plurality of joint blocks each having a connection flow path connecting the connected hoses;
a bracket attached to the slide member and the fixed member and supporting the plurality of joint blocks;
a headed screw member for fixing the joint block to the bracket;
block mounting means for overlapping and fixing the plurality of joint blocks by tightening the screw member, and separating the plurality of joint blocks by loosening the tightening of the screw member;
with
The block mounting means has a plurality of elongated holes formed in the bracket in the direction in which the joint blocks overlap each other, and the screw member passing through the elongated holes is tightened into the screw hole of the joint block,
A machine tool in which the coupling block has a portion connected to the hose facing downward, and among the plurality of long holes formed in the bracket, the long hole through which adjacent screw members are passed is common. a spindle device that rotates the gripped workpiece;
a turret apparatus for performing swivel indexing for a plurality of tools mounted on a tool bed;
a driving device for moving the tool of the turret device in the machining axis direction;
a control device for controlling the driving of each device;
a hose piping structure for passing a hose between the slide member and the fixed member of the drive device;
The hose piping structure includes:
A hose connected by tightening a nut on a mouth fitting provided at the tip,
a plurality of joint blocks each having a connection flow path connecting the connected hoses;
a bracket attached to the slide member and the fixed member and supporting the plurality of joint blocks;
a headed screw member for fixing the joint block to the bracket;
block mounting means for overlapping and fixing the plurality of joint blocks by tightening the screw member, and separating the plurality of joint blocks by loosening the tightening of the screw member;
with
In the block mounting means, a through hole for mounting is formed in the joint block, a screw hole is formed in the bracket, and the screw member is a half screw with a hexagonal hole having a threaded tip. , the through holes are longer than the thickness dimension of the two or more joint blocks in which the through holes are overlapped,
The joint block is formed with an L-shaped connection channel, and the through holes are formed in two locations across the connection channel in a direction orthogonal to the L-shaped surface, and the bracket is , a machine tool in which the screw holes are obliquely formed so that a plurality of the joint blocks are arranged in a staggered manner .

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