CN112672846B

CN112672846B - Machine tool and machining machine line

Info

Publication number: CN112672846B
Application number: CN201880097512.0A
Authority: CN
Inventors: 铃木俊史; 铃山惠史; 神谷敦
Original assignee: Fuji Corp
Current assignee: Fuji Corp
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2023-04-25
Anticipated expiration: 2038-09-28
Also published as: WO2020065950A1; JPWO2020065950A1; JP7050172B2; CN112672846A

Abstract

The machine tool and the machining machine line are capable of performing an in-machine operation from a machine body width direction side surface, and include: a spindle device for rotating a workpiece held by the spindle chuck; a driving device for moving the tool along the machining axis direction for machining the workpiece; a processing chamber which is a closed space for processing a workpiece held by the spindle chuck by a tool that is moved by the driving device; a working door mounted on a working window of a side wall of the machine body forming the processing chamber; the electromagnetic lock device is arranged on the operation door; and an operating device which is mounted on the side wall of the machine body and can perform unlocking operation of the electromagnetic lock and driving stopping operation of the main shaft device and the driving device.

Description

Machine tool and machining machine line

Technical Field

The present invention relates to a machining tool line in which a plurality of machine tools are arranged in a machine body width direction, and more particularly, to a machine tool capable of performing an in-machine operation from a machine body width direction side surface.

Background

As disclosed in, for example, patent document 1 below, a machining machine line composed of a plurality of machine tools includes a plurality of machine tools mounted on a base in a modularized manner so as to be movable in the front-rear direction. The machine tool of this document is provided with a work door on the side wall of the inner cover, and by opening the work door, work such as maintenance and component replacement can be performed. The work door is a vertically sliding manual door that can be pulled up from below to above to perform a work in a processing chamber. In addition, the opening provided with the work door is formed near the work object such as the spindle chuck, and maintenance work and the like are easy to perform.

Prior art literature

Patent document 1: international publication WO 2016/063121

Disclosure of Invention

Problems to be solved by the invention

In the machine tool of the above conventional example, a safety sensor is attached to a work door, and a machining line is automatically stopped while the work door is open. Therefore, in a machining machine line composed of a plurality of machine tools, the whole line is stopped by performing the in-machine operation only on one machine tool, and the number of times of stopping increases, which results in a decrease in productivity. In particular, if the number of machine tools constituting the machining line increases, the chances of maintenance and the like increase accordingly, and productivity further decreases. In the case of the above-described conventional example, since the maintenance, component replacement, and other operations are performed in a state in which the machine tool is pulled forward, the automatic workpiece conveyor is stopped, or the entire machining machine line is stopped.

In order to solve the above problems, an object of the present invention is to provide a machine tool and a machining tool line capable of performing an in-machine operation from a side surface in a machine body width direction.

Means for solving the problems

The machine tool according to an aspect of the present invention includes: a spindle device for rotating a workpiece held by the spindle chuck; a driving device for moving the tool along the machining axis direction for machining the workpiece; a processing chamber which is a closed space for processing a workpiece held by the spindle chuck by a tool that is moved by the driving device; a working door mounted on a working window of a side wall of the machine body forming the processing chamber; the electromagnetic lock device is arranged on the operation door; and an operating device which is mounted on the side wall of the machine body and can perform unlocking operation of the electromagnetic lock and driving stopping operation of the main shaft device and the driving device.

The machining machine line according to another aspect of the present invention includes: a plurality of machine tools arranged along the width direction of the machine body; and a workpiece conveying device, wherein the workpiece conveying robot moves in the front part of the plurality of machine tools along the width direction of the machine tool body, and performs workpiece delivery and reception to the machine tools, wherein the machine tool is provided with a main shaft device for rotating a workpiece held by a main shaft chuck and a driving device for moving a tool along the machining axis direction for machining the workpiece, a work door is mounted on a work window formed on the side wall of the machine body forming a closed machining chamber for machining the workpiece, and an operating device capable of performing unlocking operation of an electromagnetic lock arranged on the work door and driving stopping operation of the main shaft device and the driving device is mounted on the side wall of the machine body.

Effects of the invention

According to the above configuration, since the work window is provided in the side wall of the machine body, work can be performed at a position close to the spindle chuck or the like in the processing chamber, and the unlocking of the electromagnetic lock device, the stopping of the driving device, and the like can be performed by operating the operating device of the side wall of the machine body provided with the work window, so that even in the case of a processing machine line in which a plurality of machine tools are arranged, the work required for this can be performed on the spot at the time of performing work in the processing chamber.

Drawings

Fig. 1 is a plan view showing an embodiment of a machining machine line.

Fig. 2 is a side view showing an embodiment of a machine tool.

FIG. 3 is a perspective view showing the front part of the machine tool with the work door open

Fig. 4 is a diagram showing a side wall of the machine tool in a state where the work gate is closed.

Fig. 5 is a schematic diagram showing the relationship of the respective devices constituting the processing machine line.

Detailed Description

Next, an embodiment of the machine tool and the machining line according to the present invention will be described below with reference to the drawings. First, fig. 1 is a plan view showing a machining machine line according to the present embodiment, and fig. 2 is a side view showing 1 machine tool constituting the machining machine line. In the machining line 1, four machine tools 5 are arranged in parallel in the lateral direction, and an intermediate device 6 is provided at the center thereof. The intermediate device 6 is provided for temporary placement of a workpiece, for example, and a workpiece to be processed, which is conveyed from a processing front half (right side in fig. 1) to a processing rear half (left side in fig. 1), is temporarily placed as a relay point of a workpiece conveying device provided in front and rear.

The machine tool 5 is assembled to the movable bed 11 so as to be movable back and forth along a rail laid on the base 2. The base 2 can mount two machine tools 5. The machining machine line 1 shown in fig. 1 is provided with an intermediate device 6 interposed between the bases 2, and includes a front half and a rear half for machining by two machine tools 5 mounted on the bases 2. In particular, the machine tool 5 is covered by a body cover 12 having a uniform appearance and a relatively narrow width, and the machining line 1 is configured in a compact overall structure by disposing two machine tools 5 on the base 2 in close proximity.

Although the internal structure is not shown in detail, in the machine tool 5, rotation is imparted to a workpiece held by a spindle chuck, and a tool rotationally indexed by a turret device is moved in a machining axis direction by a driving device to perform cutting machining or the like on the workpiece. The machine tool 5 is provided with a closed processing chamber 15 for processing a workpiece in the machine body cover 12.

The machine tool 5 has a front cover 13 formed on the front part of the machine body cover 12 so as to be openable and closable, and the machining line 1 is continuous through the front cover 13 of each machine tool 5 to form a conveying space 10 in which the workpiece conveying robot moves. Therefore, although not shown in the drawings, in the machining machine line 1, an automatic workpiece conveyor for delivering workpieces to and from each machine tool 5 is incorporated in the conveying space 10. The machine tool 5 has an automatic sliding door formed in a front wall 121 of the housing 12, and when the automatic sliding door is opened, the workpiece transfer robot enters the processing chamber 15 to transfer the workpiece to and from the spindle chuck.

In a machining line where all the machine tools are close to each other and adjacent to each other, when maintenance of the machine tools is performed, an operator often puts his/her hand in from the front surface side of the machine body. However, since the workpiece automatic conveyor is provided on the front surface side of the machine body, the distance from the turret apparatus and the spindle chuck becomes long during the work from the front side, and the workability is poor. In this regard, the machine tool of patent document 1 can perform work from the vicinity of the object by moving the machine tool back and forth on the base and opening the work door provided in the side wall.

However, even in the case of maintenance performed by opening the front cover 13 or maintenance performed by opening the work door of the side wall, the movement of the work conveying robot in the conveying space 10 is restricted, and thus, the driving of the processing machine line is stopped. That is, in the conventional machining line, when one machine tool needs maintenance or the like, the whole machine tool needs to be stopped, and productivity is lowered, which is a problem. In this regard, the machine tool 5 and the machining line 1 according to the present embodiment have a structure in which the machining line 1 can be continuously driven even when a certain machine tool 5 is in maintenance.

The machine tool 5 is provided with a work door 21 on a side wall 123 of the housing 12 as in the conventional example. Fig. 3 is a perspective view showing a state in which the work door 21 is opened at the front of the machine tool 5. Fig. 4 is a view showing a closed state of the work door 21 provided on the side wall 123. The work door 21 is an opening/closing door for closing the work window 125 of the side wall 123, and is attached to the front end of the work window 125 by being pivotally fixed to the side wall 123 by a hinge 22 so as to be opened to the rear side of the machine body. In the side wall 123, a detachable panel is screwed to the frame, and a work window 125 is formed in a part thereof, and the work door 21 is attached.

The machining machine line 1 of the present embodiment has a work space 20 on the rear side of the intermediate device 6, into which an operator can enter. Therefore, even the intermediate machine tool 5 among the plurality of machine tools 5 arranged in the width direction can perform work such as tool replacement, cleaning, and maintenance from the side surface side without moving the intermediate machine tool 5 in the front-rear direction. The work window 125 is used in such work, and a hinged door type work door 21 that is easy to open and close is attached thereto. The working window 125 is formed at a position where the spindle chuck, turret device 16, and the like in the processing chamber 15 can be easily worked.

The work door 21 is formed with an observation window 23 so that the condition inside the processing chamber 15 (i.e., the state of the spindle device, the turret device 16, and the like) can be checked even in the closed state. The observation window 23 is formed of laminated glass in which a synthetic resin film is sandwiched between two pieces of plate glass so that fragments do not scatter even when broken. The work door 21 is screwed to the side wall 123 to form a part of the wall when closed, and improves the sealing performance of the processing chamber 15. In the present embodiment, thumbscrews are used for fixing the work door 21, and a plurality of knob bolts 24 are installed so that no tool is required in the screw tightening work.

Next, in the machining line 1 for automatic control, the work door 21 is configured as a safety door provided with an electromagnetic lock switch, for example, similarly to other opening/closing doors. The electromagnetic lock switch in the work door 21 has a switch body fixed to the inner side of the side wall 123 and a key hole formed in the side surface. The key member 25 is fixed to the work door 21 via a bracket, and the key member 25 is inserted into a key hole of the switch body when the work door 21 is closed.

The electromagnetic lock switch is, for example, of a general solenoid lock type, and is configured such that a key member 25 is inserted into a switch body to supply electric power to a solenoid, and a shaft is fitted into a recess of a cam against the force of a compression spring by electromagnetic force, so that the key member is in a locked state in which the key member does not come out. On the other hand, when the power supply to the solenoid is cut off, the shaft returns by the spring force, and the cam is rotated freely, so that the key member 25 is in an unlocked state in which it can be pulled out.

When an operator opens the work door 21 to perform tool replacement or the like, it is necessary to unlock the electromagnetic lock switch to stop the driving of the machine tool 5. Conventionally, the operation is performed by an operation panel 14 provided on the front surface of the machine body for each machine tool 5. Therefore, in the case of the machining line 1, after the operator operates the operation panel 14 on the front surface of the machine body, the operator must bypass the outer side of the machining line 1 and enter the working space 20 from the rear of the machine body as indicated by the two-dot chain line in fig. 1. In this way, the moving distance is long, and the working time is lost. Therefore, in the present embodiment, the sub-operation device 26 is attached to the side wall 123 at a position close to the work door 21.

The sub-operation device 26 is used to perform unlocking of the electromagnetic lock switch of the work door 21 and driving stop of the machine tool 5. Fig. 5 is a schematic diagram showing the relationship between the devices constituting the processing machine line 1. The machining line 1 is provided with a wire-collecting device (HUB) 17 on each base 2, and is connected to a control device 18 of the machine tool 5 mounted on the base 2. In the present embodiment, the workpiece conveying device 7 is provided for each of the two machine tools 5 mounted on the base 2, and the respective control devices 19 are also connected to the line concentration device 17. In the machining line 1, the

control devices

18 and 19 of the four machine tools 10 and the workpiece conveying device 7 are connected to each other by the wire-collecting device 17, so that a LAN (Local Area Network: local area network) is constructed.

In the machine tool 5, the operation panel 14 on the front surface of the machine body and the sub-operation device 26 on the side of the machine body are connected to the control device 18. Therefore, in the machine tool 10, not only the operation panel 51 but also the sub-operation device 26 can transmit the operation signal to the control device 18, and in particular, the unlocking of the electromagnetic lock switch of the work door 21 and the driving stop of the machine tool 5 can be performed. In the machining machine line 1, the operation performed by opening the operation door 21 with respect to one machine tool 5 can be performed without stopping the driving of the other machine tool 5 and the workpiece conveying device 7.

Therefore, in the machining line 1 of the present embodiment, the control device 19 of the workpiece conveying device 7 stores a normal conveying program for four machine tools 5 and a work conveying program for excluding a part of the machine tools 5. That is, in the normal state, the work is conveyed to the four machine tools 5 in a predetermined order, but in the case where the work such as maintenance is performed on a part of the machine tools 5, the conveyance of the work to the other machine tools 5 other than the machine tools 5 is switched.

Next, the operation and effects of the machine tool and the machining line according to the present embodiment will be described. In the machining machine line 1, the workpieces fed from the stocker are sequentially fed to the machine tools 5 by the workpiece conveying device 7, and in each machine tool 5, rotation is imparted to the workpiece held by the spindle chuck, and predetermined machining is performed by the tool moved by the driving device. In such a machining machine line 1, for example, when the machine tool 5 located in the central portion needs to take out a workpiece due to tool replacement or an error, a predetermined operation performed by opening the side operation door 21 is performed as follows.

The operator enters the working space 20 of the machining tool line 1, and performs an unlocking operation of the electromagnetic lock switch and an operation of stopping the driving of the machine tool 5 with respect to the sub-operation device 26. Thus, the electromagnetic lock switch of the work window 21 is in the unlock state, and in order to enable removal of the work, each driving unit is stopped and the spindle chuck is also in the non-clamping state. In the present embodiment, the unlocking operation can be performed before the work window 21 as the work position, and the movement distance of the operator can be significantly reduced. Further, since the observation window 23 is formed in the working window 21, after the operation of the sub-operation device 26, the operator can visually confirm that the internal device has stopped by observing the inside of the working chamber 15.

An unlock signal is sent from the sub-operation device 26 to the

control devices

18 and 19, and switching from the normal conveyance program to the work conveyance program excluding the corresponding machine tool 5 is performed by using the unlock signal as a trigger. Therefore, even if the electromagnetic lock switch signal is OFF, the workpiece conveying device 7 conveys the workpiece to the other machine tools 5 except the machine tools 5 in the work of the operator. For example, when the same machining is performed on the two right-hand machine tools 5 shown in fig. 1, even if one of the machine tools is hesitant to perform the cleaning operation and the driving is stopped, the workpiece is machined by the remaining one machine tool, and the workpiece is conveyed to the second half on the left-hand side of the drawing via the intermediate device 6. As a result, according to the present embodiment, the machining of the workpiece can be continued without stopping the entire machining line 1, and a significant drop in productivity can be avoided.

The work door 21 can be opened and closed by unlocking the electromagnetic lock switch, but is screwed to improve the sealing property of the processing chamber 15. In the present embodiment, since the work door 21 is fixed by the knob bolt 24, a tool is not required for opening and closing the work door 21. Therefore, it is not necessary to take or replace the tool in the tool storage unit as in the prior art, and the travel distance of the operator can be significantly reduced in this point, thereby improving the work efficiency. Further, tool replacement, workpiece removal, cleaning of the seating surface, and the like can be performed from the working window 125 near the spindle chuck, turret device 16, and the like, and the workability is improved as compared to the case of performing from the front surface side of the machine body.

Although the above description has been given of the embodiment of the present invention, the present invention is not limited to this, and various modifications can be made without departing from the gist thereof.

For example, the machining line or the machine tool is an example, and may be a different type of device.

Description of the reference numerals

1 … machine tool line 2 … base 5 … machine tool 6 … intermediate device 10 … transport space 12 … fuselage housing 13 … front housing 14 … operator panel 15 …

process chamber

18, 19 … control device 20 … working space 21 … working door 22 … hinge 23 … viewing window 24 … knob bolt 25 … key member 26 … secondary operator 123 … side wall 125 … working window.

Claims

1. A machine tool, comprising:

a spindle device for rotating a workpiece held by the spindle chuck;

a driving device for moving the tool along the machining axis direction for machining the workpiece;

a processing chamber which is a closed space for processing a workpiece held by the spindle chuck by a tool that is moved by the driving device;

a main operation device mounted on the front surface of the machine body forming the processing chamber for operation by an operator;

a working door mounted to a working window formed in a side wall of the body;

the electromagnetic lock device is arranged on the operation door; a kind of electronic device with high-pressure air-conditioning system

And a sub-operation device which is attached to a side wall of the main body and is capable of performing an unlocking operation of the electromagnetic lock device and a driving stop operation of the main shaft device and the driving device.

2. The machine tool of claim 1, wherein,

the work door is formed with an observation window for confirming the condition of the inside of the processing chamber.

3. The machine tool according to claim 1 or 2, wherein,

the operation door is provided with a thumbscrew for being screwed with a threaded hole formed on the side wall of the machine body.

4. A machining tool line, comprising: a plurality of machine tools arranged along the width direction of the machine body; and a workpiece conveying device, wherein a workpiece conveying robot moves along the width direction of the machine body of the machine tools at the front parts of the plurality of machine tools to deliver and receive workpieces to and from the machine tools,

the machine tool is provided with: a spindle device for rotating a workpiece held by the spindle chuck; a driving device for moving the tool along the machining axis direction for machining the workpiece; a main operation device mounted on a front surface of a machine body constituting a processing chamber for an operator to operate, the processing chamber being a closed space for processing a workpiece held by the spindle chuck by a tool moved by the driving device; a working door mounted to a working window formed in a side wall of the body; and a secondary operation device which is mounted on a side wall of the machine body, and which is capable of performing an unlocking operation of an electromagnetic lock device provided on the work door and a driving stop operation of the main shaft device and the driving device.

5. The machine tool line of claim 4, wherein,

the electromagnetic lock device has an on/off switch for detecting the opening/closing of the work door, and the work conveying device stops the work conveying operation upon receiving the on signal of the on/off switch, and continues the work conveying operation for other machine tools than the machine tool in which the electromagnetic lock is unlocked upon receiving the on signal of the on/off switch and the unlock operation signal of the electromagnetic lock of the sub-operation device.