JP3492890B2 - Wiring and piping equipment for machine tools - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a wiring / piping device in a machine tool that moves in the Z-axis direction, that is, a table-fixed type machine tool.

[0002]

2. Description of the Related Art In a conventional machine tool, wiring and piping for electric power and hydraulic pressure from a fixed part for controlling rotation and driving of a movable part to the movable part side are connected via a junction box (junction block). This is done by connecting flexible cables (electric wires and flexible hoses). For example, referring to FIG. 5, the main axis 1 is X,
A side view of a conventional horizontal machining center of a type that can move in the Y-axis and Z-axis directions, especially showing the wiring and piping structure from the fixed part to the moving part. In the figure, the axis line parallel to the Z-axis is shown. A column 3 having a spindle head 2 which supports a spindle 1 rotating about its center slides on a saddle 5 in the Z-axis direction, and a saddle 5 on which the column 3 is placed slides on a bed 7 and slides in the X-axis direction. It is assembled as possible. The spindle head 2 is provided so as to slide on the column 3 in the Y-axis direction.

On the front side of the column 3, a work is fixed on a table 9 installed on the upper surface of the bed 7, and a tool mounted on the spindle 1 is rotated to perform cutting work. In the machining center, the fixed part 11, which is necessary for transmitting electric power to the movable part and controlling the operation of the movable part,
For example, the wiring 13 and pipes from the machine control unit (MTC) or hydraulic / pneumatic unit to the movable parts (spindle 1, spindle head 2, column 3, saddle 5, etc.) are erected on the saddle 5.
Via the junction block (relay box) 15 that is attached integrally with the saddle 5 on the upper part of the
It is constructed so as to be installed on the moving part in the Z-axis direction.

[0004]

[Problems to be Solved by the Invention]
In the piping device, since the total weight of the pillar 13, the junction block 15, the erected electric wire, the piping, etc. is hung on the saddle 5,
The total weight of the saddle 5 becomes abnormally large, the load on the saddle guide surface becomes large, and the inertial resistance to the movement in the X-axis direction becomes large, which may adversely affect the prompt feed operation of the column 3 and the spindle 1. is there. In particular, since the junction block 15 is heavy, the pillars 13 that support the junction block 15 also need to be strong, which inevitably requires a large weight. Further, in order to construct the wiring and piping of the above-mentioned type, there is an inconvenience that complicated wiring work such as terminal connection in the junction block 15 is essential.

Therefore, an object of the present invention is to remove the heavy object associated with the junction block from the saddle and transfer it to another member to reduce the weight and load on the saddle in a classable manner. By eliminating the element that restrains the sliding motion in the X-axis direction, the spindle can be fed at high speed and high acceleration, and the spindle side can move in the X, Y, and Z-axis directions. To provide. It is another object of the present invention to provide a pipe / wiring device capable of reducing or reducing the number of wirings for driving and controlling a moving part and the number of pipes in such a machine tool.

[0006]

In order to achieve the above object, the device of the present invention generally removes the support means of the junction block for relaying wiring and piping from the saddle and mounts it on a separate guide rail. A single flexible cable that is seamless is used for wiring and piping between the fixed part and the moving part, eliminating the work such as terminal connection in the junction block of the relay. By making it possible to fix an arbitrary position of the intermediate portion of the flexible cable to the junction block via a connector, the number of steps for connecting terminals in the block can be reduced. Allows fine adjustment of the required length of the flexible cable. In other words, in detail, it has the following constituent elements.

(1) It has a saddle and a column that move horizontally on the bed in two axial directions, a spindle head that moves vertically on the column, and a table provided on the bed. In an axially movable machine tool, a junction block that relays an electric wire and a hose that supplies electric power and fluid from a fixed part of the machine tool to the moving part, and a junction block provided in the fixed part and parallel to the moving direction of the saddle. A wiring / piping device for a machine tool, further comprising: a guide rail that movably supports the junction block; and interlocking means that interlocks the junction block with the movement of the saddle along the guide rail.

(2) A cable connector which can be tightened at any position of each of a plurality of electric wires or hoses provided between the fixed portion and the moving portion, and the cable connector which is provided at the junction block. The wiring / piping device for a machine tool according to the above item (1), further comprising: a cable support plate having a plurality of notched grooves that can be inserted and fixed.

[0009]

[Function] The junction block for relaying and distributing the flexible cable for wiring and piping from the fixed part to the moving part is separated from the saddle, and is supported on an independent guide rail. The saddle supports, the junction block, and
By eliminating the heavy load on wiring and piping, the inertial resistance of the saddle is reduced and the weight is relatively reduced, enabling high-speed displacement of the saddle during machining and high-speed machining of the spindle. Wiring and piping that connect the fixed part and the moving part are each made into one flexible cable, and the cable is locked to the notch groove cut in the junction block at any location via the connector through which the cable is inserted. Then screwed on,
It can be fixed and the number of wiring and piping steps such as terminal connection in the junction block is reduced.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described. However, the constituent features of the present invention are appropriately changed within the technical level of the art at the time of the application of the present invention. Since possible requirements are included, it is not allowed to reduce the gist of the invention based on only this embodiment.

FIG. 1 is a schematic side view showing a part of an embodiment of a horizontal machining center provided with a wiring / piping device for a machine tool of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a rear view thereof. In the figure, the spindle 1, the spindle head 2, the column 3,
The structure, functions, combinations, etc. of the saddle 5, bed 7, table 9, fixing portion 11, junction block 15, etc. are the same as those of the conventional machine described above, and the members with the same reference numerals have the same requirements. Shows. With reference to FIG. 2, the column 3 having the spindle 1 and the spindle head 2 has a saddle 5
The saddle 5 is mounted on the bed 7 and slidable in the X-axis direction. In addition,
The spindle 1 is axially supported by a spindle head 2 so as to rotate around an axis parallel to the Z-axis direction.
It is mounted so as to be movable in the Y-axis direction. Table 9 is
It is fixed and installed on the bed 7 in front of the sliding direction of the column 3. An ATC magazine 17 is arranged beside the bed 7, and a selected tool among the storage tools of the magazine can be attached to and detached from the spindle 1 by an automatic changing means, and the work is processed by the attached tool. A horizontal machining center configured to perform is shown.

In the above machine, the fixing portion 11 according to the present embodiment is composed of a machine control unit (MTC) 19 and an oil / pneumatic unit 21 which are arranged on the rear side of the horizontal machining center via a frame. From the to the moving part,
The junction block 15 for relaying pipes is mounted on a guide rail 23 installed between the mechanical control unit (MTC) 19 and the hydraulic / pneumatic unit 21 so that it can slide in the X-axis direction. (See FIGS. 2 and 3). In this embodiment, an interlocking bracket 25 (see FIGS. 1 and 2) is provided to connect the junction block 15 and the saddle 5, and the junction block 15 is a guide rail.
It is possible to interlock with the movement of the saddle 5 in the X-axis direction by being forced by the interlocking bracket 25 while being mounted on the 23.

Referring to FIGS. 1 and 3, one end sides of a plurality of electric wires 27 and a plurality of flexible hoses 29 are connected to a machine controller (MTC) 19 and a cable bracket provided on a hydraulic / pneumatic unit 21, respectively. Connected to the hose bracket,
After slackening in a U shape and connecting to the junction block 15 side, the block 15 is relayed and wiring and piping are provided in the moving parts in the X-axis direction and the Z-axis direction. Further, a flexible cable slackened in a U shape is extended from the junction block 15 to a hose bracket provided at the rear portion of the spindle head 2 so that the drive and operation of each moving member can be controlled by the machine control device (MTC) 19 and the oil. -It is controlled by the pneumatic unit 21. By allowing the cable length of the wiring and piping in this way, the electric wire 27 and the flexible hose 29 are moved to the movement stroke limit of the moving portion in the X-axis, Y-axis and Z-axis directions.
Connect with ease.

In the horizontal machining center described above, in order to rapidly move the spindle 1 in the X-axis direction during high-speed machining of a workpiece, the saddle 5 on which the column 3 having the spindle 1 is mounted is rapidly slid in the X-axis direction. However, in this embodiment, the strut 1 is mounted on the saddle 5 as in the conventional machine.
3. Since no heavy objects such as the junction block 15 and wiring and piping are placed on the saddle 5, the weight on the saddle 5 is reduced, acceleration is good for the same input, and rapid movement of the spindle 1 is not hindered. Especially, there is no support column 13,
The effect is that only the interlocking bracket 25, which is much lighter in weight, is mounted on the inertial mass of the saddle 5.

In this embodiment, at this time, the operation of the junction block 15 that follows the saddle 5 in the X-axis direction on the guide rail 23 is transmitted by the interlocking bracket 25 attached to the saddle 5. From the object of the present invention, when the operation of the junction block 15 is performed based on an input different from the interlocking bracket 25,
It is even more effective. Further, the frictional resistance of the saddle 5 against sliding in the X-axis direction can be significantly reduced, and an effect based on it can be expected. Since each flexible cable connected to the junction block 15 has a slight slack, the operation error due to the sliding in the X-axis direction can be absorbed there.
The movement position of the junction block 15 on the 23 does not need to accurately follow the movement of the saddle 5 in the X-axis direction.

FIG. 4 is an enlarged plan view of the junction block 15, in which the block comprises a cable support plate 31 and an oil distribution block 33. Along the periphery of the cable support plate 31,
A plurality of keyhole-shaped notched grooves 35 having a narrow entrance and a wide inner part are provided, and the cable connector 37 having an inner diameter that allows the outer diameter of the electric wire 27 to pass through is connected to the electric wire (for driving or control).
27 through which the outer diameter of the cable connector 37 is fitted into the plate 31 through the narrow entrance, and the connector 37
Screw the hexagon nut and the screw part formed on each other,
At that position, an arbitrary position in the longitudinal direction of the electric wire 27 and the cable support plate 31 are fixed via a cable connector 37.

With the above structure, it is possible to perform wiring from the fixed portion 11 to each moving member with one electric wire 27, and to fix or open an arbitrary position in the longitudinal direction of one electric wire on the cable support plate 31. Therefore, it is possible to perform fine adjustment of a necessary portion with respect to the length of the electric wire 27, and it is possible to reduce the number of work steps such as connecting terminals within the junction block 15, which is highly useful. On the top surface of the oil distribution block 33, the cable support plate 31 is penetrated to supply / exhaust oil pipes for supplying / discharging pipes or solenoid valves (not shown, mounted on the bottom surface of the oil distribution block 33) for controlling the moving parts, respectively. Plural pipes that communicate with each other are arranged. Flexible hoses 29 are connected to the bottom surface of the oil distribution block 33 to supply and drain oil for controlling the moving part. This flexible hose for oil / pneumatic piping can be connected by a single pipe from the fixed portion 11 to the moving member. In that case, the same cable connector as the above-mentioned electric wire may be used and fixed in the keyhole type cutout groove.

[0018]

EFFECTS OF THE INVENTION Since the device of the present invention is as described above, in the machine tool in which the main shaft is movable in the three axial directions of the X, Y and Z axes and the bed and the table are integrally formed, ) Since heavy items such as stanchions, junction blocks, wiring, and piping have been removed from the saddle, the load on the movement of the saddle in the X-axis direction is reduced, and high-speed machining by the spindle when moving in the same direction is possible. To (2) Simplification of the support mechanism of the junction block, (3) Reduction of wiring man-hours such as terminal connection in the junction block, fine adjustment of the length of the flexible cable is possible, and multiple lines of wiring can be arranged in a beautiful manner. Wiring work can be simplified. (4) Electric wires and pipes are not twisted or twisted. And so on, you can't expect this kind of device in the past,
It is possible to exert a special action and effect.

[Brief description of drawings]

FIG. 1 is an overall side view of a horizontal machining center according to an embodiment of a wiring / piping device for a machine tool of the present invention, with a part cut away.

FIG. 2 is an overall plan view of a horizontal machining center according to an embodiment of a wiring / piping device for a machine tool of the present invention.

FIG. 3 is a rear view of a horizontal machining center according to an embodiment of a wiring / piping device for a machine tool of the present invention.

FIG. 4 is an enlarged plan view of a junction block in a horizontal machining center of an embodiment of a wiring / piping device for a machine tool of the present invention.

FIG. 5 is a side view showing a part of a conventionally known wiring / piping device in a horizontal machining center in which a main shaft is movable in three axial directions and a bed and a table are integrally formed.

[Explanation of symbols]

1 spindle 2 spindle head 3 columns 5 saddle 7 beds 9 tables 11 Fixed part 13 props 15 junction block 17 ATC Magazine 19 Machine controller (MTC) 21 Oil / Pneumatic unit 23 Guide rail 25 interlocking bracket 27 electric wire 29 Flexible hose 31 cable support plate 33 Oil distribution block 35 keyhole notch 37 cable connector

─────────────────────────────────────────────────── ─── Continuation of front page (72) Kenichi Ono Kenichi Ono, Nakatsu 4007, Aikawa-cho, Aiko-gun, Kanagawa Makino Jay Co., Ltd. In-company (56) References JP-A-63-162139 (JP, A) JP-A-4-244342 (JP, A) Actual Kai-hei 6-31934 (JP, U) (58) Fields investigated (Int.Cl . ⁷ , DB name) B23Q 1/00

Claims (2)

(57) [Claims] 1. A saddle and a column that move horizontally on the bed in two axial directions, a spindle head that moves vertically on the column, and a table provided on the bed,
In a machine tool in which a main shaft side is movable in three axial directions, a junction block that relays an electric wire and a hose that supplies electric power and fluid from a fixed part of the machine tool to a moving part, and a saddle provided on the fixed part and moving the saddle. A guide rail that movably supports the junction block parallel to the direction, and an interlocking unit that moves the junction block along the guide rail in conjunction with movement of the saddle. Machine wiring and piping equipment. 2. A cable connector which can be tightened at an arbitrary position of each of a plurality of electric wires or hoses provided between the fixed portion and the moving portion, and a cable connector which is provided in the junction block and through which the cable connector is inserted. The cable support plate according to claim 1, further comprising:
Plumbing equipment.