JP3241069B2 - Automatic cutter tip changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cutter tip exchanging apparatus suitable for a multi-flute type throw-away cutter, and more particularly to an automatic exchanging state of a cutter tip which can be visually monitored and an immediate action can be taken in the event of an abnormality. The operability has been improved as described above.

[0002]

2. Description of the Related Art Conventionally, as a multi-blade indexable cutter, a pin mirror cutter applied to machining of a crankshaft, for example, as disclosed in JP-A-61-25710, has been known. When the chip incorporated in the cutter is worn, the cutter is removed from the processing machine, and the chip is manually replaced outside the machine.

In order to improve this manual operation, for example, a cutting edge mounted on a rotary table is automatically incorporated in a mounting groove while the position of the cutting edge of the cutter tip is controlled by a measurement sensor. JP-A-63-105815 concerning an apparatus, and JP-A-64-105815 concerning an apparatus for automatically removing a cutter tip from a throw-away cutter mounted on a rotary table.
No. 64716, and similarly, Japanese Patent Application Laid- Open Nos. 64-64715 and 3-1 concerning an automatic tightening device for a cutter tip.
No. 96928 is disclosed. In addition, machine tools
In the field of machinery, the contents at the time of abnormality
Japanese Patent Application Laid-Open No. 62-84
No. 957 is disclosed.

[0004]

However, manual chip replacement requires a high degree of skill,
There were problems such as the occurrence of tendonitis. Further, in the apparatus described in the above-mentioned publication, attachment to the cutter tip,
In addition to the inconvenience that only one of them can be removed, there is a problem that the operation monitoring and control when replacing the cutter tip is not taken into account, which leads to insufficient operability and responsiveness in the event of an abnormality. I was

In view of the above, the present invention enables automatic replacement in which both the attachment and removal of the cutter tip can be performed, and enables the visual monitoring and control during the automatic replacement work, and furthermore, the occurrence of abnormalities. In this case, a recovery instruction is displayed in addition to the content display.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a cutter tip is automatically replaced by a nut runner and a gripper on a rearrangement table on which a disk-shaped cutter body is arranged. An object of the present invention is to provide an automatic cutter tip changing device whose management is controlled by a centralized control means.

That is, the centralized control means includes a
Automatic exchange related to the control function for automatic
Display of the change, display of the contents at the time of abnormality,
Monitoring function for self-diagnosis,
Data processing function and data for tool master
Print function and data backup,
Parameter setting, data Auxiliary function for disk initialization added
It is made to be done. Also, remove the cutter tip.
If mounting accuracy is required,
Automatic measurement is performed and the data is stored. Further
In addition, the attachment and detachment of the cutter tip with the nut runner
Tightening screw or cutter tip on mounting wedge
For the tightening screw located in the mounting hole
You.

In addition, the rearrangement table 2 has a tilt angle α ₂ corresponding to the axial rake angle of the throw-away cutter and a turning angle β corresponding to rearrangement of the cutter tip from both side surfaces of the throw-away cutter by the centralized control means. ₂ and the index angle γ ₂ of the cutter tip in the circumferential direction of the throw-away cutter is controlled in three axes.

[0009]

In the automatic cutter tip exchanging apparatus according to the present invention, the exchanging operation and the like are controlled by a centralized control means. In addition to the control function relating to the automatic exchange of the cutter tip, the centralized control means is provided with a display function for displaying the movement for the automatic exchange, a monitoring function relating to the self-diagnosis of the recovery instruction, a data processing function, a printing function and an auxiliary function. Therefore, effective management such as visual display by a monitoring function, content display and recovery display for occurrence of abnormalities, and confirmation by back data can be performed.

Further, since the rearrangement table is controlled by three axes, it is possible to automatically replace a staggered blade array of cutter chips as seen in a pin mirror cutter.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic cutter tip changing apparatus according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a disc-shaped multi-blade type throwaway cutter disposed on a rearrangement table 2. On the rearrangement table 2 provided with a drive unit 3, a cutter is provided by a nut runner 4. The chip 5 is automatically exchanged. In this case, throwaway cutter 1
Is applied to an internal pin mirror cutter for machining a crankshaft, for example, as shown in FIGS. 2 to 4, and a cutter tip 5 incorporated therein is provided with a tightening screw in a tip seat 7 formed on a locator 6. It is fixed by a mounting wedge 9 with 8. As shown in FIG. 5, a central mounting hole 5 provided in the cutter tip 5 is provided.
By using a, it may be fixed by the tightening screw 8.

The rearrangement table 2 is controlled by a control panel 10 on three axes. In the three-axis control, the drive unit 3 controls the inclination angle α ₂ corresponding to the axial rake angle of the throw-away cutter 1 and the turning angle β ₂ corresponding to rearrangement of the cutter tip 5 from both sides of the throw-away cutter 1. Further, the index angle γ ₂ of the cutter tip 5 in the circumferential direction of the throw-away cutter 1 is controlled from the control panel 10 via the drive unit 11. As shown in FIG. 6, the rearrangement table 2 forms an annular body having an inner hole 2a, and the cutter tip 5 can be automatically replaced from the direction of the inner hole 2a.

On the other hand, the nut runner 4 is provided in the clamp station 12, and is constituted by, for example, an angular type AC servo whose tip can be freely replaced. The control of the nut runner 4 is performed by a control panel 13 for the nut runner. In this case, the drive unit 14 of the clamp station 12 for performing the clamp / unclamp is controlled by five axes by an operation from the control panel 10. This 5-axis control is based on X
Longitudinal axis direction indicated by _3, the left-right direction shown by Z _3, Y
Vertical axis direction indicated by _3, the inclination angle direction is relationship indicated by twisting angle direction and alpha ₃ represented by gamma _3.

Thus, the throwaway cutter 1
The cutter chip 5 arranged on the chip stocker 15 is held on the gripping hand 17 on the rearrangement table 2, and the new and old cutter chips 5 are exchanged accordingly. This grip hand 17 is attached to the end of the gripper 16, and
For example, the cutter chip 5 is held by vacuum suction on two side surfaces. Then, the grip hand 17 has a robot driving portion 18a and the Y ₁ axis direction of the driving portion 18b, are 3-axis controlled by the control board 10. In this case, the robot drive unit 18a, the front-rear direction indicated by X _1, and controls the lateral axis direction indicated by Z _1.

The delivery of the cutter tip 5 from the tip stocker 15 to the grip hand 17 is performed by a delivery hand 15a operated by the control panel 10, as shown in FIG.

The thus-configured cutter tip exchanging apparatus is provided with a centralized control means 19 to which the control panel 10 and the control panel 13 for the nut runner are connected. The centralized control means 19
As described above, control such as start, stop, individual operation, and the like for automatic replacement of the cutter chip 5 is performed by the control panels 10 and 13, but in the present invention, in particular, a monitoring function based on a visual display for automatic replacement is added. Is what is being done. That is, this monitoring function is controlled by the sequencer 20 and the VDT is displayed. Specifically, as shown in FIG. 8, the old cutter chip 5 is removed → discharged → the new cutter chip 5 is supplied → attached. And the number of cutter chips 5 that are currently mounted is identified by, for example, red: complete, yellow: remaining color display. In addition, this monitoring function displays a self-diagnosis at the time of an abnormality in addition to the above-mentioned display of the motion at the time of the normal. In this case, the content of the self-diagnosis is, specifically, a display of the content of the abnormality and a display of a recovery instruction. Therefore, when an abnormality occurs, the operator only needs to perform processing according to the displayed contents.
Repair time can be reduced.

Further, the centralized control means 19 includes:
As shown in FIG. 9, a data processing function, a printing function, and an auxiliary function are provided in addition to the monitoring function described above. In this case, the data processing function is
And a data processing function relating to the tool master. The former is stored, stored, and processed in the FD, so that when a problem occurs at the site, the assembled data can be checked, and the cause of the problem can be pursued. The latter registers and saves all the indexable cutters 1 and cutter chips 5 applied to the automatic replacement, and includes the cutter number, chip number, manufacturer name, life, used machine, and the like. is there. In this case, the information relating to the throwaway cutter 1 may include a barcode label, for example, which can be read by the barcode reader 20.

The printing function is for printing out by the printer 21, and the print contents are the data relating to the assembling and the data relating to the tool master described above. The auxiliary functions are related to data backup, parameter setting, and FD initialization.

When the blade runout accuracy with respect to the cutter tip 5 is required, the centralized control means 19
A measurement control function is incorporated in connection with the replacement of the cutter chip 5, and data related to the measurement is also stored and stored in the FD. That is, the measurement data relating to the blade runout is measured by the measurement control panel 22. Specifically, as shown in FIG.
4 is measured by, for example, an electric micrometer 25 attached to 4, and the numerical value is displayed on the VDT. Further, it is also possible to process the measurement data including the freely settable permissible value line and display the data graphically. This means that the assembling accuracy can be determined at a glance, and the position of the cutter chip 5 outside the allowable value can be determined. In particular, this is effective when there is a portion that needs to be measured with respect to the inner diameter A, the pin width B, and the web width C as in the case of the internal type pin mirror cutter shown in FIGS. In this measurement, after the sensor holder 24 is moved up, down, forward and positioned by the air cylinders 26, 26, the electric micrometer 25 is controlled by the control panel 27 for the inner diameter A and the pin width B.
And for the web width C. Further, each time the switching is performed, the throw-away cutter 1 of the rearrangement table 2 makes one rotation by the drive unit 11. The measurement result is taken into the control panel 27 for each rotation, but is subjected to arithmetic processing before and after, and is printed out from a printer 28 mounted on the control panel 27. The method of measurement, calculation, and printout may be any of the normal serial type and parallel type. The calculation method of the measurement result is that the lowest cutting edge is 0 and the highest cutting edge is 0. Either of the cases of 0 may be adopted.
In this case, those which are outside the freely set tolerance are processed as NG. Next, the assembly is performed again by the control operation of the operator, and the accuracy is confirmed after the re-measurement.

[0021]

As described above, according to the present invention, in the automatic cutter tip changing apparatus, the centralized control means 19 is provided, and the monitoring function including the self-diagnosis display, the measuring function, the data relating to the chip changing and the tool master are provided. The processing function, the printing function, and the auxiliary function are incorporated. Therefore, automatic replacement including both attachment and detachment of the cutter chip 5 can be performed, and visual control of the automatic replacement movement of the cutter chip 5 by the centralized control means 19 and monitoring management based on diagnosis at the time of abnormality become possible. Another advantage is that the automatic replacement of the cutter tip 5 can be smoothly managed by other functions.

[Brief description of the drawings]

FIG. 1 is a conceptual explanatory view showing an embodiment of an automatic cutter tip exchanging apparatus according to the present invention.

FIG. 2 is a partial front view showing a main part of the throwaway cutter.

FIG. 3 is a partial side view.

FIG. 4 is an explanatory diagram showing a rotation locus of a cutting edge.

FIG. 5 is a perspective view of a main part showing another indexable cutter.

FIG. 6 is a conceptual explanatory view showing a cross section of a main part of the rearrangement table.

FIG. 7 is a conceptual explanatory diagram illustrating an example of a chip supply station.

FIG. 8 is an explanatory diagram showing a display of a movement in automatic replacement of a cutter tip.

FIG. 9 is an explanatory diagram showing an example of control by the centralized control means.

FIG. 10 is a conceptual explanatory diagram showing an example of a chip measuring station.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 throw-away cutter 2 rearrangement table 4 nutrunner 5 cutter chip 10 control panel 12 clamp station 13 control panel 16 gripper 18 a robot drive unit 19 centralized control means 20 barcode reader 21 printer 23 measurement station 25 electric micrometer 27 control panel

────────────────────────────────────────────────── ─── Continuation of the front page Examiner Takuya Okano (56) References JP-A-63-105815 (JP, A) JP-A-3-196928 (JP, A) JP-A-62-84957 (JP, A) Kaisho 64-64715 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23Q 3/155 B23C 5/20 B23C 9/00

Claims (3)

(57) [Claims] An automatic exchange of a cutter tip by a nut runner and a clipper is performed on a remounting table on which a multi-blade type throw-away cutter is disposed, and the automatic exchange is controlled by a centralized control means. In the automatic cutter tip exchanging apparatus controlled by the above, the rearrangement table 2 is provided to the centralized control means 19.
Corresponds to the axial rake angle of the indexable cutter 1
Angle α ₂ , from both sides of indexable cutter 1
Turning angle beta ₂ and corresponds to the recombination of the cutter tip 5
Cutter tip in the circumferential direction of the indexable cutter 1
Indexing angle gamma ₂ is 3-axis control of the centralized control means 19, in relation to the control functions related to the automatic exchange of the cutter chip 5, the contents of the time display and the abnormal movement relative automatic exchange, the recovery instruction self Monitoring function related to diagnosis, data processing function related to cutter tip 5 exchange and tool master, printing function to print out data and data backup, parameter setting, F
An automatic cutter tip exchanging apparatus, characterized in that an auxiliary function related to D initialization is added. Wherein the control function regarding the automatic exchange of the cutter tip 5, tip run control function and measurement data of the data processing functions autochanger of claim 1 Symbol placement of the cutter tip is added for automatic measurement related . 3. The automatic exchange in the cutter tip 5, as carried out by the nut runner 4 and a clipper 16 for tightening the screw 8 positioned in the mounting hole 5a of the clamping screw 8 or cutter chips 5 provided in the mounting wedge 9 3. An automatic cutter tip exchanging device according to claim 1 or claim 2 .