JPH07299694A - Control device for nozzle direction of machine tool - Google Patents

Abstract

PURPOSE:To provide a new nozzle direction control device where a tool length measuring means and a nozzle means are united. CONSTITUTION:A directionally controllable nozzle means N for coolant and a measuring means having a sensor rod F which is attached to a main spindle for detecting the length of a tool are unitedly provided on the main spindle 3 of a machine tool 10, and the above means are severally connected to a remote control section E provided on a spindle heads 4 for making simultaneous actuation, and the nozzle means N is controlled in its posture in the same direction as the measuring means on the teaching result of the measuring means for detecting the tip of the tool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle direction control device for injecting a fluid or gas into a tool of a machine tool, and organically includes a nozzle means capable of controlling the direction and a measuring means for detecting a tool tip mounted on a spindle. In addition, the nozzle direction control can be efficiently performed for one or a plurality of machine tools by effectively utilizing this measurement data.

[0002]

2. Description of the Related Art Conventionally, various nozzle direction control devices for supplying coolant or cooling air have been used in order to cool the machining point of a tool to prolong the life of the tool and to remove the chips that wind around the tool during resin machining. Proposed. When the nozzle direction control is performed only by the NC program, an extra servo motor and amplifier for using the additional axis of the NC are required for one axis, which is costly and mechanically expensive. Therefore, there are many problems in terms of cost, mechanism, and software, and it is not practical. This is becoming an even more serious problem when operating a plurality of machine tools as a system.

Further, since it is necessary to detect a breakage of the tool when the tool is replaced, if a breakage detector is separately provided in addition to the nozzle device, installation space, cost, and software for interlocking with the tool replacement operation are provided. It takes a lot of time and cost to develop the wear, and it increases the awkwardness.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and demands of the prior art, and provides a novel nozzle direction control device in which a tool tip measuring means and a nozzle means are combined. An object of the present invention is to provide the measured data of the tool effectively and to efficiently control the direction of the nozzle for a plurality of works and one or a plurality of machine tools.

[0005]

Below, only the main constituent means constituting the present invention will be described. Claim 1 of the present invention
Nozzle means that can control the direction near the spindle of the machine tool,
A measuring means for detecting the tip of the tool attached to the spindle is provided, and each of the above means is connected to a remote control unit for synchronous operation.
A nozzle direction control device for a machine tool, which is characterized in that the direction of a nozzle is controlled based on a measuring means for detecting the tool tip every time the tool is changed under the control of a sequencer. By interlocking the measuring means of the tool tip mounted on the spindle and the nozzle direction control, the functions of both can be exhibited at the same time, and the nozzle direction control technology of a completely new idea is provided.

According to a second aspect of the present invention, a nozzle means for direction control and a measuring means for detecting a tool tip mounted on the spindle are provided in the vicinity of the spindle of the machine tool. It is configured to connect and synchronize, and the tool data that controls the nozzle direction based on the measuring means that detects the tip of the tool every time the tool is changed for the first work under the control of the sequencer is stored in the memory section. A nozzle direction control device for a machine tool is characterized in that, for the same workpiece that has been stored and exchanged after the second time, the nozzle direction control associated with the exchange of a machining tool is controlled by the stored tool data. As a result, it is possible to omit the data acquisition time and its operation in the measuring means, and improve the productivity.

According to a third aspect of the present invention, the measuring means detects the tool tips of all the machining tools for different workpieces on the machine tool, and the direction of the nozzle is controlled based on the measuring means to store the tool data. In the machine tool, when the second and subsequent workpieces are machined in the machine tool, the tool data in the memory corresponding to the selected workpiece is selected, and the nozzle direction control for each tool is sequentially performed by the tool data. Is a nozzle direction control device for a machine tool. As a result, it is possible to omit the data acquisition time and its operation in the measuring means, and improve the productivity.

Further, according to a fourth aspect of the present invention, the nozzle direction is swivelly positioned with respect to the tool tips of all the machining tools for one to each work piece on the machine tool, and the nozzle direction is set to the tool direction. Is stored in the memory section as tool data (teaching data) corresponding to, and when the workpiece is machined by the automatic operation of the machine tool next, the stored tool data corresponding to the selected workpiece is selected and The nozzle direction control device for a machine tool is characterized in that the direction control of the nozzle for each tool is sequentially performed based on the tool data. As a result, it is possible to omit the data acquisition time and its operation in the measuring means, and improve the productivity.

Further, according to a tenth aspect of the present invention, all the tools stored in the tool magazine are stored in the sequencer in advance by comparing the tool numbers and the tool data with each other, and are stored in the order of the tools to be used prior to the machining of the predetermined workpiece. When the tool data in the PLC is rearranged (programmed) and the tool change signal is received during automatic operation of the machine tool, the PLC uses the tool No.
The nozzle direction control device for a machine tool is characterized in that the tool data corresponding to is sequentially called, and the nozzle direction control is performed based on the called tool data. As a result, the number of tools and the order of use associated with the work change can be manually programmed, which is suitable for free nozzle direction control.

Further, according to claim 11 of the present invention, in a machining system for sequentially machining one work by a plurality of machine tools, a central control unit for integrally controlling each machine tool or an NC for separately controlling each machine tool. Actuating the nozzle means for each tool according to the tool information emitted from the control device,
A nozzle direction control device for a machine tool, characterized in that nozzle direction control is performed. Therefore, in the FMS system, the tool information from the central processing control unit is sent to the sequencer and NC control unit of each machine tool, and the nozzle direction control for each tool of each work can be comprehensively performed by this tool information. , Improve productivity in FMS system.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the drawings including the techniques described in claims 1 to 11 of the present invention will be described below. FIG. 1 shows the overall configuration of the present invention. A machine tool 10 is an ATC for exchanging a bed B, a table T on which a work W is placed, a spindle 3 equipped with a tool T1, a spindle head 4 thereof, and various tools T1 ... Tn.
A device 20 is provided. Spindle head 4 in the machine tool 10
Nozzle means N such as coolant capable of controlling the direction and touch sensor type measuring means F (hereinafter referred to as sensor rod F) for detecting the outer peripheral tip of the tool (hereinafter referred to as sensor rod F) are integrally provided at the lower end of the outer periphery of the tool. ing. The nozzle means N
In order to direct the nozzle n of 1 to the tip of the outer periphery of the tool T1, the sensor rod and the nozzle are interlocked and controlled in that direction. The sensor rod F is used as a ruler for determining the direction when the teaching method of visually directing the nozzle means N to the tip of the tool is used.

As shown in FIGS. 1 and 2, the means N and F are provided with a remote operation section E (for example, a motor M with an encoder and a cylinder C) for synchronous operation.
Is horizontally moved from the tool change position O1 to the position O2 directly above the workpiece, the dog 1 causes the switch K1 to act, and the controller MC of the sequencer which receives this ON signal activates the motor M and the cylinder C, which is the standby position. The nozzle n facing the axial direction A of the main shaft and the plate-shaped sensor rod F are swung in the same attitude in the tip direction (A ′) of the tool TH shown by the solid line. Here, the sensor rod projects toward the tip of the tool T1 or the sensor rod is retracted into the unit U.

After this, the main spindle descends from the position O2 directly above to the processing position O3, and enters the work processing. After the processing, the dog 2 causes the switch K2 to actuate only the cylinder C to move the sensor rod while moving from O3 to O2.
Here, if necessary, the tool length is detected again, and when an ON signal is issued, it is determined that there is no tool breakage. After that, it is configured to be operated in the basic cycle of moving from O2 to O1 and replacing with a new tool.

2 to 7, the connection structure of the remote operation part E, the nozzle means N and the sensor rod F will be described. The rotary shaft 11 driven by the motor M with a reducer in the remote control section E transmits the torque by the flexible wire 12 to the worm 14 in the main body 13 attached to the spindle head 4 with the band 30 '. A worm wheel 16 is attached to a rotary shaft 15 supported in the main body 13, and the worm 14 meshes with the worm wheel 16 to reduce the rotation speed of the motor M to a small diameter portion 1.
A unit U of nozzle means N is attached to 5, and a swingable nozzle n is screwed to the front surface thereof. A pipe 17 for supplying a coolant liquid or a fluid R of an air flow is provided in the nozzle n from the operation section E or the like.

A dog D is screwed onto a threaded rod 19 of a gear 18 meshing with a gear G1 of a rotary shaft 11 so that the nozzle n is restricted from turning downward (A) toward the main shaft 3 by 90 degrees. , The ascending / descending position is detected by two limit switches (may be a magnetic sensor or the like) L1 and L2, and the motor M
Control the stop position of. Of course, set the limit switch L2 to L2
If it is moved to ‘′, the turning angle of the nozzle n can be enlarged and adjusted to the position (B). Further, an encoder 21 for adjusting the direction control of the nozzle n according to its turning angle meshes with a gear G1 via a gear G2, and a command value from this encoder 21 is stored in the memory ME as tool data of each tool. In the second and subsequent nozzle direction control, the motor M is rotationally controlled by this tool data.

Next, a sensor rod F which is a measuring means of the tool tip.
The configuration will be described with reference to FIGS. 5 to 10. The resin unit U penetrates through a through hole 22B having a flat cross section at a position near the nozzle n, and the tip of the through hole 22B projects alongside the nozzle n. Then, the rear end side of the sensor rod F is guided in the flat tube 30 made of an insulating material and is connected to the piston rod CA of the cylinder C via an insulator as shown in FIG. Further, since the sensing rod SA of the touch sensor main body S is in contact with the rear end of the sensor rod and there is no electrical conduction in this state, the touch sensor S is OFF. However, when the tool TH touches the tip of the sensor rod, it becomes electrically conductive, the touch sensor is turned on, and the tool length is detected by this ON signal. As the touch sensor S, any means such as electrical conduction, electrostatic capacitance, or electromagnetic joining means can be adopted.

The flat tube 30 is flexible as shown in FIG. 8 in order to ensure its flexibility and insulation.
A pair of resin materials 30A and 30B having a mold cross section are joined together. In particular, since the slit 30A 'is provided on the resin material 30A side, the bendability is good as shown in FIG. Also, FIG.
As described above, the tube 31 made of the resin material 31A, 31B having a semicircular cross section may be used as a sensor rod having a circular cross section,
The tube 32 made of resin material 32A, 32B having an elliptical cross section may correspond to a sensor rod having an elliptical cross section. Further, a resin pipe known as a Niporex tube having a cylindrical cross section may be a flat-heat treated tube. The sensor rod F has a flat cross section in which the nozzle n side is recessed,
The material of the steel tape measure is used, which maintains the extended state with a large force against the external force from the side, but easily bends with a small force toward the nozzle n side. As a result, the sensor rod bends with respect to a large external force, but restores when the external force disappears. If it is desired to increase the rigidity of the sensor rod in both directions, the two sensor rods may be symmetrically face-to-face entangled with each other.

Incidentally, the drive unit for retracting the sensor rod F may be constituted by the drive unit 40 of one embodiment shown in FIGS. 6 and 7 in addition to the cylinder C of FIG. That is, the rear end 30 'of the tube 30 of the sensor rod F is connected to the drive body 40A,
In this internal space 40B, a pair of pulleys 41, 42 are supported by support shafts 43, 44 via insulating materials 41A, 42A,
Worms 46 and 47 integrally provided on the pulleys mesh with each other by one pinion 45. This pinion 4
When 5 is rotated in the forward and reverse directions by a small motor (not shown), the pair of pulleys 41 and 42 rotate at low speed in opposite directions as indicated by solid lines and broken lines, and the flat sensor rod F sandwiched between the pulleys 41 and 42 is moved to the tool TH. Drive in and out according to the direction. still,
A winder 50 for winding the rear end of the sensor rod F is attached to the rear end of the drive unit 40. Also, the sensor S is exposed to the space 40B so that the sensor rod F can be sensed (not shown in FIG. 6). Of course, the drive unit 4 of the sensor rod F
The configuration of 0 is not limited to the above, and a feeding mechanism of known means can be appropriately adopted.

Each of the above-mentioned members (motor M, cylinder C or motor, switches K1, K2, touch sensor S, etc.) serves as a signal source and an actuator which are sequence-controlled by a controller MC which is a sequencer. 11
The operation panel OP of one embodiment as shown in FIG. On the operation panel OP, there are a power switch SW, a switch S1 for selecting "automatic" and "manual" for controlling nozzle direction, a mode switch MS for switching sensing for each time and sensing for only one cycle, and a cutting tool presence / absence switch SH. I have it. When the selection switch S1 is in the "manual" position, the "nozzle on" switch NS1
Press to move the nozzle direction to the main shaft 3 side,
Pressing the "nozzle down" switch NS2 causes the nozzle to turn downward. In addition, "sensor output" switch SS1
When is pressed, the sensor rod F is projected, and when the "sensor return" switch SS2 is pressed, the sensor rod F is immersed. Here, when the memory button (MM) is pressed, the numerical value in which the direction of the nozzle n is taught as the "position command value" from the encoder is stored in the memory section in the sequencer MC.

On the other hand, when the selection switch S1 is set to "automatic", the sensor rod F controls the nozzle direction simultaneously with the measurement of the tool tip in conjunction with the tool changing operation, and the cutting tool detection switch SH is "absent" after machining. In that case, the cutting tool detection is omitted, and in the case of "present", when the cutting tool detection is executed and then the tool exchange operation is performed again, the sensor rod F repeats the control of the nozzle direction simultaneously with the measurement of the tool tip. When the mode switch MS is selected to "every time", the tool tip detection and the nozzle direction control are performed every time the tool is changed regardless of the type and number of the works W. or,
When the mode switch MS is selected as “one time memory”, 1
The data acquisition of the tool tips of all the machining tools is executed for one work W, and the data is stored in the memory section in the sequencer MC. Then, when the machining of the same work is executed after the work replacement, the nozzle direction is controlled for each tool replacement based on the stored tool data for each tool. Further, when "work No." is set by the "one-time memory" and the work select switch WS capable of selecting, for example, 99 kinds of works, the tools to be used and their tool data are stored for each work. This tool data can be stored in the IC card via the loader R, or an IC card corresponding to the work to be processed can be inserted into the loader R and the tool data can be returned to the sequencer MC to nozzles for each tool of the corresponding work. Direction control can be performed.

The "alarm" AL lights up when a tool measurement error or cutting tool loss occurs, the "memory" MM indicates a state in which the tool data is stored, and the "home position" P indicates the nozzle n standby position. Lights when in (A). The "operation lamp" PL is also a power lamp and indicates the operation state.
Of course, the layout of the switches on the operation panel OP, other indicators, and the devices built in the sequencer MC are not limited to those in the above embodiment, and the layout and specifications can be changed as necessary.

The nozzle direction control device of the present invention is constructed as described above and operates as follows. With reference to the flowchart of FIG. 12 and FIG. 1, first, the basic operation of “sensing every time tool change” is described. When "Machining / finishing" (a) is started by the start, "protrusion of sensor rod / working point O3 goes up O2"
(B) Move it. During this process, the breakage detection function is activated by turning on the switch K2, and if the protruding sensor rod F does not touch the tip of the tool T1, it remains off and "breakage / alarm"
(C) Notify the NC control device. On the other hand, if it is turned on, the sensor rod F is contracted and moved to the replacement position O1. At this time, the nozzle n and the sensor rod are returned in the axial direction A in preparation for the new tool detection and the nozzle direction control command. After tool change ・ Move the tool from O1 to O2. Here, the switch K1 operates to cause the "remote tool protrusion / nozzle unit rotation" (f) to synchronously perform "tool length detection / nozzle direction adjustment" (g) by the remote operation unit E.

Then, when the "touch sensor is turned on" (h), "motor stop / cylinder action" (r) is performed and "sensor rod is contracted and nozzle direction is fixed" (n). With this, the nozzle n correctly faces the tool. With the movement of the spindle to the machining position O3 (ru) and the "completion of machining" (wo), the spindle returns from O3 to O2 again, and the sensor rod F protruding here.
If the tool touches, there is no breakage, and if it does not touch, there is a breakage / alarm (c). If there is no breakage, move to the next new tool change. Hereinafter, the same operation is sequentially performed. If it is not necessary, the operation program may be a program in which the tool breakage detection after machining is omitted. The flowchart is shown in FIG. First, the mode switch MS is set to "every time", the cutting tool detection is set to "none", and "automatic" operation is performed. Subsequently, the tool "T1" is moved "from the machining point O3 to the ATC point O1" (b) at "the machining / completion of machining" (a) of the work. Here, "after the tool is changed, the tool is moved from O1 to O2" (c), "the sensor is turned to the detection position" (d), and "the sensor rod is projected" (e). After this, the sensor rod is "tool length detected"
At the same time, the "nozzle direction adjustment" (f) is synchronized with the remote operation unit E. "Touch sensor ON" (g)
If so, "motor stop" to "fix nozzle direction" (h)
Then, the action of “contracting the sensor rod” (i) is executed. Then, the tool of the spindle is moved to the machining position O3 and machining is started (j). Hereinafter, the same cycle is sequentially repeated.

Next, sensing is performed only for one cycle for the first work, and for the second and subsequent times of the same work, the tool data stored in the memory unit is called corresponding to the order of tools used for machining, and the nozzle direction control is performed. The mode switch MS described in FIG. 14 and FIG. 1 is set to “one-time memory”, and the cutting tool detection is set to “none” or “automatic” operation. When machining the first work, first, by "new work installation" (a),
When "ATC operation" (b) is performed, the tool change is detected by the switch K1 that hits dog 1, "new tool detection and nozzle direction control" (c) is performed, and this tool data is stored in "memory 1" in the memory section. Remember. And "work processing ・
"End" (d) "Replace next tool by ATC operation"
(E) Perform "Detect next tool and control nozzle direction"
(F) is performed, and this tool data is stored in the memory section as "memory 2". Hereinafter, every time the tool is replaced, the tool data is stored as “memory 3, memory 4 ...”
"Completion of workpiece machining".

After replacing the work, the work of the same shape is attached again. When machining this second workpiece,
After "Replace with next work" (h), "ATC operation-Nozzle direction control with memory 1" (re) and "Workpiece machining / end" (nu), and "Nozzle direction control with ATC operation-memory 2" (ru) ) And ... "Working / completion" (wo), and the first tool data is called for the exchange tool and used for nozzle direction control. Less than,
The third and fourth workpiece machining are similarly performed, and the sensing operation is omitted, so that the productivity is improved.

Further, FIG. 15 shows a method of storing tool data of each tool for a plurality of different works W1 to Wn. This is to detect the respective tools and control the nozzle direction in the order of use of the respective tools for the works W1 to Wn in the memories TM1 to TM1.
In the "preparation step" for performing TMn, data is taken, the tool data stored in the memory unit or stored in the IC card is read by the loader R, and from this data, the workpiece to be machined from among the workpieces W1 to Wn. W1 is called by the work select switch WS from among "1 to 99 types". The nozzle direction control is executed for each tool used for the processing content corresponding to this work.

Subsequently, when the machining operation of the work is started and "the nozzle direction is controlled in each work machining process", that is, in the work W1, the "ATC operation / tool T1" is first set.
After (a), a signal generated when the switch K1 touches the dog 1 is used to perform "nozzle direction control by memory TM1" (b) in the tool data, and when machining with this tool is completed, "ATC operation / tool T2". (C) is exchanged, and a signal is generated when the switch K1 touches the dog 1, and the "nozzle direction control by the memory TM2" of this tool data is performed (D).
Then, when the machining with this tool is finished ... "AT
C operation / tool Tn ”(e) is exchanged, and the signal“ touching the dog K1 with the switch K1 ”is used to“ control the nozzle direction by the memory TMn ”(f) of this tool data, and the machining of the work W1 is completed. . Below, work W2, W3
... Work W to be machined and nozzle direction control is performed by switching the work select switch WS.
No. 2 to Wn is called, and nozzle direction control is performed in the same manner as above.

In the embodiment shown in FIG. 15, the detection of each tool and the nozzle direction control are stored as tool data TM1 to TMn in the order of use of each tool T1 to Tn for each work W1 to Wn. The data collection in “” was performed by automatic measurement by the measuring means. However, regardless of the measuring means, even if a teaching method is adopted in which the nozzle is visually directed to the tool tip by manually rotating the nozzle and this direction is stored as a "direction command value" in the memory unit such as a sequencer by an encoder. Good. (See Figures 16, 17, and 11)

In FIG. 11, first, the switch S1 is set to "manual" and the work select switch WS is set to "01".
And correspond to the work W1. The mode switch MS is “every time”. Here, as shown in FIG. 17, the nozzle n and the sensor rod F are relied upon to make a visual adjustment in the tip direction of the tool T1. As shown in FIG. 11, this is the switch NS1 for "nozzle up" or the switch NS2 for "nozzle down".
It is performed by operating. When the direction of the nozzle n is positioned, the "memory switch MM" is pressed, and the "direction command value" of the encoder here is stored in a memory unit such as a sequencer. This will be described with reference to FIG. 16. The work number “01” is designated corresponding to the work W1, and the “manual operation of the ATC” is sequentially performed on the tools T1, T, ... The nozzle direction at T1 is operated by operating the "nozzle up" switch NS1 or the "nozzle down" switch NS2. When the teaching memory TM1 is set to the correct direction, the memory switch M
Press "M" to store it as a "direction command value" for the encoder in the memory such as a sequencer. Thereafter, in the same manner, "manual operation of ATC" is performed, and tools T2, T3, ...
For "Tn", the teaching memory TM1 for the nozzle direction is individually pressed by the "memory switch MM" and stored as a "direction command value" of the encoder here in a memory unit such as a sequencer. The teaching operation is similarly performed for the next works W2, W3 ... Wn, and the work numbers “02”, “03”, ... “99” are designated and stored.

Thereafter, similarly to the method of implementation shown in FIG.
Each work W1, W2 ... Wn is selected by an appropriate means, and the "automatic operation (work machining)" for the designated work W1 is sequentially stored in the nozzle direction control corresponding to the new tool accompanying the tool change. Teaching memory T
.., TMn are output in this order to control the nozzle direction.

By the way, as a guide when the nozzle n is directed to the tool tip by the above teaching method, the sensor rods F arranged in parallel close to the nozzle may approach or touch the tool tip, or temporarily. Alternatively, the coolant may be sprayed from the nozzle and the direction thereof may be confirmed. As shown in FIG. 17, the sensor rod F is manually pulled out from the winder 50 attached to the nozzle unit N at the time of visual measurement, or is operated by a rotary actuator (not shown) attached to the winder 50. A method of pressing the "sensor out" SS1 of OP to operate may be adopted. According to this teaching method, there is an advantage that the switch function of the sensor rod F for checking the presence or absence of the tool tip can be omitted. Of course, the function of detecting the missing edge of the sensor rod F will be omitted.

Next, as shown in FIG. 18, all the tools T stored in the tool magazine of the machining center in the preparation process.
1 to Tn are preliminarily subjected to "tool No." (1) and "teaching of tool data acquisition" (2), and nozzle direction information (tool data) TM1 to TMn for the tool No are compared and controller (sequencer). Let the MC "memory" (3). Next, specify the workpiece (for example, W1), and enter the tool sequence program used for this machining by "manual input".
(4) Do. Then, the automatic operation is started, and the tool change signal from the machining center (the dog 1 is detected by the switch K1 for the spindle movement from the ATC position (O1))
One of the tool data TM1 to TMn corresponding to the tool No is “call” (5), and one of the nozzle direction information (tool data) TM1 to TMn is “nozzle direction control” (6).
Are sequentially executed. Here, it becomes "processing / processing end",
Similarly, when exchanging with the next new tool, the "tool change signal" is similarly input, and one of the nozzle direction information (tool data) TM1 to TMn programmed corresponding to the next tool No is "call" (5). , "Nozzle direction control" with one of the new nozzle direction information (tool data) TM1 to TMn
Execute (6) again. The advantage of this method is that the sequence of the sequencer
Since the nozzle direction information (tool data) TM1 to TMn corresponding to the tool No. stored in C or the like is freely programmed by manual input, for tools that are randomly replaced when the work is changed. Can also be adaptively controlled. Of course, if the nozzle direction information (tool data) TM1 to TMn corresponding to the above-mentioned “tool No.” is stored in the memory part in the IC card or the sequencer, the preparation step can be omitted from the next time.

In order to control the nozzle direction of each of the works W1 to Wn based on the tool data stored in the IC card, the number of machine tools is not limited to one, but a plurality of machine tools can be used as common tool data. It can also be used.
For example, as shown in FIG. 19, a plurality of machine tools 10
In the FMS system in which A, 10B, and 10C are operated in parallel, "tool information T1 to T" is stored in the central processing control unit CPU.
“Tool data TM1 to TMn” for “n” is stored, or “tool data TM stored in the IC card is stored.
1-TMn "is transferred to the central processing control unit CPU by the loader R, and" tool data TM1-TMn "is stored in the memory. And each machine tool 10A, 10B, 10C
Each work W1 to W in the controller MC of the sequencer provided in
The "tool data TM1 to TMn" corresponding to n is collated, and nozzle direction control is performed.

Purely, a plurality of machine tools 10A, 1
In order to perform nozzle direction control only by "tool NoT1 to Tn" in the central processing control unit CPU when operating 0B and 10C in the FMS system, etc., "Tool NoT1 to Tn"
The "nozzle direction control command value" corresponding to "n" is sent from the central processing control device CPU to the control device MC with a sequencer of each machine tool, and the "nozzle direction control command value" is added to the nozzle direction control servomotor for one axis. (Not shown) is driven to perform "nozzle direction control".

It is needless to say that the present invention is not limited to the above-described embodiment, and the design of each part can be changed. For example,
The switches NS1 and NS2 for changing the nozzle direction perform "upward and speed adjustment" of the nozzle direction when turned to the right at an intermediate zero (O), and "downward and speed adjustment" when turned to the left. You may include the device which improves the usability like it does. Then, the arrangement of the dog 1 and the switch K1 for detecting the movement of the main shaft after ATC can be changed to a proper place other than the one shown. Further, the operation panel OP may be detachably attached to the right side surface of a pendant panel (not shown) of the machine tool by a magnet, or the switches may be sheet switches.

Further, it is needless to say that the various operation flowcharts described with reference to FIGS. 12 to 18 are implemented by appropriately changing the details. For example, as shown in FIG. 20, when a work W1 (the same applies to W2 and W3) is machined and a power failure occurs during use of the tool T2, “restart” is performed.
Now, in order to start from “tool T4”, the “tool No specified Tnos” shown in FIG. 11 is set to “T4”. Then, "T4" is confirmed in the "tool number display Tno". After that, by performing "restart", the tool data is replaced with "tool T4", and the tool data TM4 is obtained, and this nozzle direction control is performed as indicated by "arrow". That is, even if the tool is skipped or interrupted, the nozzle direction control corresponding to it is performed.

[0037]

[Effect] Since the present invention is configured as described above, the following effects are expected. By interlocking the tool length measuring means mounted on the spindle and the nozzle direction control, the functions of both can be exerted at the same time, and a nozzle direction control technology of a completely new idea is provided. The program of the NC controller is not required, and the nozzle control operation can be easily performed by the detection interaction with the sensor rod at the tool tip. Since the nozzle and sensor rod are integrally configured, it can be easily attached to the spindle of existing machine tools and contributes to effective use of space. It is also possible to use it together with the tool breakage detection function after processing, and it is possible to achieve cost reduction while achieving both multifunctionalization of the device and simplification of the configuration. The tool data measured and used to control the nozzle direction to each tool tip during the first workpiece machining is stored, and the above-mentioned tool data corresponding to the above-mentioned exchange tool is recalled for the second and subsequent workpieces of the same shape. Automatically controls the nozzle direction. As a result, it is possible to omit the data acquisition time and its operation in the measuring means, and improve the productivity. When machining several different types of workpieces for the first time, each tool data measured and used to control the nozzle direction to the tip of each tool is stored, and for each of several different types of workpieces with the same shape as above Calls the tool data corresponding to the replacement tool and automatically controls the nozzle direction. As a result, it is possible to omit the data acquisition time and its operation in the measuring means, and improve the productivity. Tool data of a tool to be used corresponding to various works is stored in a memory unit or an IC card by an automatic measuring unit or a manual teaching unit. A workpiece to be machined is selected from the memory unit or the IC card, and the tool data corresponding to the tool used for machining the designated workpiece is sequentially called to control the nozzle direction. As a result, it is possible to omit the data acquisition time and its operation in the measuring means, and improve the productivity. Even when the tool order is changed due to the work change, the tool order used for machining is manually input by using the "tool No" in the magazine and the nozzle direction information (tool data) TM1 to TMn stored in advance. Even if the tool order and the number of tools used are changed, the nozzle direction control can be properly executed. In the FMS system, the tool information from the central processing controller is sent to the sequencer and NC controller of each machine tool, and the nozzle direction control for each tool of each workpiece can be comprehensively performed by this tool information. There are many effects such as improving productivity in the system.

[Brief description of drawings]

FIG. 1 is a front view of a machine tool including a nozzle direction control device of the present invention.

FIG. 2 is a cross-sectional view of a nozzle direction control device of the present invention.

FIG. 3 is a sectional view of the nozzle means of the present invention.

FIG. 4 is a side view showing a limit switch structure of the driving unit of the present invention.

FIG. 5 is a sectional view showing the relationship between the nozzle means and the measuring means of the present invention.

FIG. 6 is a side view of an essential part showing a drive part of the sensor rod of the present invention.

FIG. 7 is a sectional view of an essential part showing a feed mechanism of a sensor rod of the present invention.

FIG. 8 is a side view and a plan view showing a tube of a sensor rod.

FIG. 9 is a partial view showing a bent state of the tube of the present invention.

FIG. 10 is a cross-sectional view of a tube according to the present invention.

FIG. 11 is a block diagram of another operation panel according to the present invention.

FIG. 12 is a flow chart diagram for each time sensing and cutting tool detection according to the present invention.

FIG. 13 is a flowchart of only sensing every time according to the present invention.

FIG. 14 is a flowchart showing the first sensing and the second and subsequent nozzle control according to the present invention.

FIG. 15 is a flowchart showing nozzle control for a plurality of works according to the present invention.

FIG. 16 is an explanatory diagram showing a tool data acquisition procedure for performing nozzle control by manual teaching according to the present invention.

FIG. 17 is a front view of the main spindle showing the measuring means suitable for manual teaching according to the present invention.

FIG. 18 is a flowchart showing a nozzle control according to the present invention, in which the order of tools used can be programmed corresponding to the tool numbers in the magazine.

FIG. 19 is a block diagram showing nozzle control for an FMS system according to the present invention.

FIG. 20 is an explanatory diagram showing nozzle control in interrupt jump use of a tool according to the present invention.

[Explanation of symbols]

 3 spindle N nozzle means F sensor rod (measuring means) E remote control unit M motor C cylinder K1, K2 switch L1, L2 limit switch 10 machine tool S touch sensor MC controller (sequencer) U nozzle unit W1 to Wn work TM1 TMn tool data (nozzle direction information) T1 to Tn tools

Claims (11)

[Claims] 1. A machine tool is provided with a nozzle means capable of controlling a direction and a measuring means for detecting a tip of a tool mounted on the spindle near a spindle, and each of the above means is connected to a remote control unit for synchronous operation. A nozzle direction control device for a machine tool, characterized in that the nozzle direction is controlled based on a measuring means for detecting the tool tip every time the tool is changed under the control of a sequencer. 2. A machine tool is provided with a nozzle means for direction control and a measuring means for detecting the tip of a tool mounted on the spindle near the spindle, and each of the above means is connected to a remote control unit for synchronous operation. Under the control of the sequencer, the tool data that controls the nozzle direction based on the measuring means that detects the tool tip every time the tool is changed for the first work is stored in the memory part and changed after the second time. A nozzle direction control device for a machine tool, characterized in that the nozzle direction control associated with the replacement of a machining tool is controlled by the stored tool data for the same workpiece. 3. The machine tool detects the tool tips of all the machining tools for different workpieces on the machine tool, controls the nozzle direction based on the machine means, and stores the tool data in the memory unit. At the time of machining the second and subsequent workpieces, the stored tool data corresponding to the selected workpiece is selected and the nozzle direction control for each tool is sequentially performed according to the tool data. apparatus. 4. The tool data (teaching data) corresponding to the tool by rotatively positioning the nozzle direction with respect to the tool tips of all the processing tools for one to each work on the machine tool by visual measurement. ) Is stored in the memory unit, and then when the workpiece is machined by the automatic operation of the machine tool, the tool data in the memory corresponding to the selected workpiece is selected, and the nozzle direction control for each tool is performed as the tool is changed. A nozzle direction control device for a machine tool, which is sequentially performed based on the tool data. 5. The measuring means formed integrally with the nozzle means has a switch function of sensing when the tip of the tool touches or approaches the sensor rod, and the sensor rod is immersed when the workpiece is machined. 2. A nozzle direction control device for machine tools according to 2 and 3. 6. The nozzle direction of a machine tool according to claim 1, wherein the memory unit for storing tool data for controlling the direction of the nozzle means comprises an IC card and a loader in addition to the memory element. Control device. 7. The nozzle direction control device for a machine tool according to claim 4, wherein the winder unit for inserting and removing the sensor rod is of a manual pull-out type or an actuator type. 8. The drive unit for inserting and removing the sensor rod holds the sensor rod between a pair of pulleys, and drives the pulley in forward and reverse directions to insert and remove the sensor rod passed through the tube. Nozzle direction control device for the machine tool described. 9. The sensor rod between the driving means and the measuring means for moving the sensor rod in and out is covered with a tube in which a pair of flat strips having an L-shaped cross section is bound or a cylindrical resin is coated with a flat tube. The nozzle direction control device for a machine tool according to claim 8, characterized in that. 10. All the tools stored in the tool magazine are stored in the sequencer by comparing the tool numbers and the tool data with each other in advance, and the tool data in the sequencer are rearranged in the order of the tools to be used before machining a predetermined work. (Programming), the sequencer receiving the tool change signal during automatic operation of the machine tool sequentially calls the tool data corresponding to the tool number used, and the nozzle direction control is performed by the called tool data. Machine nozzle direction control device. 11. In a machining system for sequentially machining one work by a plurality of machine tools, by means of tool information issued from a central control unit that integrally controls each machine tool or an NC controller that separately controls each machine tool. A nozzle direction control device for a machine tool, characterized in that the nozzle means for each tool is operated to control the nozzle direction.