JPH01246042A - Numerically controlling device for composite machining machine tool - Google Patents

Abstract

PURPOSE:To determine the optimum cutting condition data automatically, not manually, by providing a cutting condition determining means determining the optimum cutting conditions according to tips and works based on the data and machining information. CONSTITUTION:When a work is to be cut, the machining information INF stored in a machining program memory 17 is retrieved, a tool to be used is determined, the bar code DT1 of the tip fitted to the tool is read out by a data reading means 9 and 21. The tip data DATA corresponding to this DT1 are read out from a tip data storing means 11, the optimum cutting conditions DAT1 corresponding to the tip and the work are determined by cutting condition determining means 12, 22, 40-42 based on the tip data DATA and the machining information INF read out, and they are stored in a memory means 12. The optimum cutting conditions according to works and tips can be determined automatically, not manually.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention provides a method for manually determining optimal cutting conditions according to the tip and the workpiece when cutting a workpiece with a tip attached to a tool. This invention relates to a numerical control device for a multi-tasking machine tool that can automatically make decisions without having to worry about it.

(b), Conventional technology Normally, when cutting a workpiece with a tool equipped with a chip in a machine tool, if the cutting condition data such as circumferential speed, feed, and depth of cut are increased, the machining time per 91 tools is However, the life time of the tip is shortened, and the tip must be replaced frequently, which reduces processing efficiency. Also.

When machining is performed with smaller cutting condition data.

Although the lifetime of the chip becomes longer, the machining time per tool 91 becomes longer and the machining efficiency decreases. Therefore,
When starting machining, the operator operates input means such as a keyboard to obtain cutting condition data that provides the best machining efficiency (hereinafter referred to as optimal cutting condition data), taking into consideration the life time of the chip, etc. was inputting.

(C) 0 Problems to be Solved by the Invention However, it is cumbersome to enter optimal cutting condition data every time the material of the workpiece changes or the tip to be used changes, and it is burdensome for the operator to input the optimum cutting condition data. This has the disadvantage of placing a heavy burden on the user.

In view of the above circumstances, the present invention provides optimal cutting condition data according to the workpiece and the chip when cutting the workpiece with a chip attached to a tool.

Decisions can be made automatically without human intervention.
The purpose is to provide a numerical control device for multi-tasking machine tools.

(d) Means for solving the first problem, that is, the present invention provides that the chip counterpart (29) corresponding to the chip (26) is provided with identification data (DTI) of the chip (26).
), and data reading means (9, 21) for reading identification data (DTI) of the chip (26) stored in the identification data storage means (27). , chip data (DATA) corresponding to the identification data (DTI) of the chip (26).
) and a machining program memory (11) storing machining information (INF).
7), and furthermore, based on the chip data (DATA) of the chip (26) and the machining information (INF), optimal cutting conditions (D
Cutting condition data determining means (A T , 1)
12, 22, 40, 41, 42).

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings.

This description is not limited to the description on the drawings.

The same applies to the column ``r　C6), ``effect'' below.

(e) 1 Effect With the above configuration, 1 the present invention, when cutting a workpiece, searches the machining information (INF) stored in the machining program memory (17), and searches the tool (INF) used for machining. 25), and the data reading means (9, 21) reads the identification data (27) stored in the identification data storage means (27) of the chip (26) attached to the tool (25).
D'1' l ), and further the identification data (1)
The chip data (DATA) corresponding to Tl) is read from the chip data storage means (11), and the read chip data (DATA) and processing are performed by the cutting condition data calculation and determination means (12, 22, 40, 41, 42). Based on the information (INF), it acts to determine the optimum cutting conditions (DATI) according to the tip (26) and the workpiece.

(f), Example Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing a production machining system to which an embodiment of the numerical control device for a multi-tasking machine tool according to the present invention is applied.

Figure 2 is a control block diagram of the numerical control device shown in Figure 1. Figure 3 is a diagram showing a barcode attached to a tool tip being read using a barcode reader. Figure 4 is a tip The perspective view which shows the barcode attached to the.

FIG. 5 to FIG. 7 are diagrams showing flowcharts of a cutting condition determination program.

Fig. 8 shows the cutting program stored in the machining program memory, Fig. 9 shows the chip data, Fig. 10 shows the cutting condition table, and Figs. FIG. 14 is a diagram showing a bar code attached to a storage box for storing small chips, and FIG. 15 is a diagram showing an example of a chip breaking diagram.

As shown in FIG. 1, the production processing system 1 includes a numerical control device 2, a host 1-computer 30, etc.
The numerical control device 2 has a main control section 3 as shown in FIG. The main control section 3 is connected to the display section 6 via the bus line 5.
Input section 7, barcode interpretation section 9. Tool data memory 10
．． Tool tip memory 11. Cutting condition memory 12, life data memory 13. System program memory 15. Diagram calculation section 16, machining program memory 17, mechanical constant parameter memory 19. Axis control section 20° maximum depth of cut calculation section 22, first depth of cut correction section 23. second incision correction section 40;
A third cut correction section 41, a fourth cut correction section 42, a system parameter memory 43, etc. are connected, and a barcode reader 21 is connected to the barcode interpretation section 9.

Further, an external control section 32 of a host computer 30 is connected to the main control section 3 shown in FIG. 2 via a communication line 31 or the like.

Via the bus line 33, a tool code file 35, a chip code file 36. A cutting condition file 37, a life data file 39, etc. are connected.

Furthermore, the tool 25 used for cutting the workpiece in the production machining system 1 has a holder 25a, as shown in FIG. It can be installed in any shape. As shown in FIG. 4, a bar code 27 indicating the chip ID number DTI of the chip 26 is attached to the side surface 26a of the chip 26.

Note that a chip breaker 26b is provided on the top surface of the chip 26 in the figure.
is formed.

Since the production processing system 1 has the above configuration,
When machining various workpieces with different shapes using the machine tool (not shown) constituting the cutting system L, the operator must use a plurality of tools to be used for machining.
Attached to the turret-type tool post of a machine tool. Next, one worker outputs the tool number TNO of each tool mounted on the tool post and the mounting position number HNO indicating the mounting position of the tool to the main control section 3 via the input section 7, respectively. In response to this, the main control unit 3 requests the host computer 30 to transfer tool data (not shown) corresponding to the tool number TNO. Here, the tool data includes the tool number TN.
Tool shape data, etc. corresponding to O and tool number TNO are written.

Tool data for all tools used in the production processing system 1 is stored in the tool code file 35.

Therefore, the external control unit 32 of the host computer 30
Tool data corresponding to the tool number TNO of each tool mounted on the tool post is read from the tool code file 35, and these data are transferred to the tool data memory 10. Then, the main control section 3.

These tool data transferred to the tool data memory 10 are written to the address of the mounting position number HNO corresponding to the tool number TNO.

Next, the operator registers what kind of tip 26 is attached to each tool attached to the tool post. When the work unit instructs execution of chip registration work via the input unit 7, the main control unit 3 searches each tool data stored in the tool data memory 10 and registers each tool mounted on the tool rest. Find the tool number TNO and mounting position number HNO.

Based on the mounting position number f (No, etc.), the tool post is indexed and rotated via the axis control unit 20, and each tool mounted on the tool post is sequentially moved to the barcode reading position RP shown in FIG. Position.

Each time the tool 25 is positioned at the barcode reading position RP, the operator brings the reading section 21a of the barcode reader 21 close to the side surface 26a of the chip 26 shown in FIG. 4 mounted on the tool 25. Then, the barcode reader 21 optically reads the barcode 27 and outputs a read signal S1 to the barcode interpreter 9. In response to this, the barcode interpreter 9 reads the chip 26 from the signal S1.
The chip ID number DTI is obtained and output to the main control section 3. Then, the main control unit 3 selects the obtained number DT.
I is output to the tool data memory 10 and read position RP
writing into the tool data of the tool 25 positioned at
Then, what kind of tip 26 is attached to the tool 25 attached to the tool rest can be determined by searching the tool data in the tool data memory 10 and reading the tool number TNO1, attachment position number HNO, and tip ID number DT1. This can be determined by further reading chip data DATA, which will be described later, and which corresponds to the ID number DTI.

In this way, when the registration of the installed chips 26 for all the tools installed on the tool post is completed, the main control unit 3
Based on the registered ID number DTI of the tip 26, the host 1-computer 30 is requested to transfer the tip data DATA corresponding to the tip 26 of each tool 25 mounted on the tool rest.

Therefore, the external control unit 32 of the computer 30 to the host 1 inputs each tool 25 of the tool post from the chip code file 36.
The chip data DATA corresponding to the ID number DTI of the chip 26 mounted on the tool chip memory 11 is read out, and these chip data DATA are transferred to the tool chip memory 11. Here, chip data DA stored in the chip code file
As shown in FIG. 9, the TA includes the chip ID number DTI of the chip 26 attached to the tool 25, the cermet,
Classification code DT written with chip type H8 such as carbide
2. Chip shape DT3 that constitutes the chip ISO code,
Relief angle DT4, tolerance DT5゜Chip breaker shape DT6
, cutting edge length (a wax) 1) T 7, thickness DT 8.
Nose radius D '11' 9, auxiliary code DT10
, the chip breaking diagram CB shown in FIG.
A point indicating the cutting area at D (for example, point Pg in the chip breaking diagram CHD shown in FIG. 15).

r11 and DT12 are written. Furthermore, the chip data DATA includes the material of the workpiece to be machined (MT
L) D'rL3, specific cutting force (X) DT l 11, standard life time DT15. Usage time DTI6, maximum wear amount D
Ti7. Wear amount DT18 etc. are written in the chip code file 36.

Chip data DATA of all chips 26 used in the production processing system 1 is stored.

Next, one worker inputs the machining data MD necessary for the first workpiece machining from the input unit 7 of the numerical control device 2 shown in FIG.
, outer diameter Di (=100m).

Inner diameter D2 (=30■), length L (=120■).

The machining method, finishing level, tool number TNO (=□6) of the tool used for machining, etc. are input as machining information INF.

The input machining information INF is stored in the machining program memory 17 in a form that constitutes a part of the cannibal program PRO, as shown in FIG.

Also, to improve the machining accuracy of the workpiece.

It is necessary to process the workpiece under optimal cutting conditions for the chip used for processing. So, the workers.

The main control unit 3 is instructed via the input unit 7 shown in FIG. 2 to determine optimal cutting condition data.

Then, the main control unit 3 controls the system programmer 11 memory 1.
The cutting condition determination program CPRO is read from 5 and executed.

That is, the main control section 3 first executes the cutting condition determination program C.
Tips 26 attached to each tool 25 on the tool post serve as reference data when determining optimal cutting conditions based on PRO.
The host computer 30 is requested to transfer the standard cutting condition data regarding. Here, the standard cutting condition data refers to the cutting condition table TAB shown in FIG.
Workpiece material [MTL and cutting condition data for insert type H5 of insert 26 (for example, specific cutting force (unit:
kg/m") 1 peripheral speed V (unit: m/win) and feed f
(unit: am/rev), etc.), and the cutting condition file 37 stores a cutting condition table TAB in which standard cutting condition data regarding all chips 26 used in the production machining system 1 is written. . In addition, in the cutting condition table TAB, three optimal feeds f are listed for each chip type H8 (for example, when the chip type H5 is cermet, 0.05.0.1.0.3). However, in consideration of economy, a standard intermediate value (for example, 0°1 in the above case) is usually adopted.

Therefore, the external control unit 32 of the host 1 to the computer 30 uses the cutting condition table TAB stored in the cutting condition file 37.
The standard cutting condition values regarding the tips 26 attached to each tool 25 of the tool post are read from the turret, and the cutting condition values are transferred to the cutting condition memory 12 as cutting condition data DATl. For example, when the chip type HS of the chip 26 is cermet, the external control unit 32 calculates specific cutting forces of 210 and 22 from the cutting condition table T A B shown in FIG.
5, etc., and when the standard value O1l is taken as the feed f, 530, 480, etc. are read as the circumferential velocity V, and these cutting condition data DATl are transferred to the cutting condition memory 12. In addition, the specific cutting force and circumferential speed V are:
It changes depending on the material MTL of the workpiece to be machined, so
Only the amount corresponding to the material MTL of the workpiece to be processed is transferred.

Next, in step S1 of the cutting condition determination program CPRO shown in FIG. The processing information configuring the Canadian program PRO shown in FIG. 8 is f! Search INF and find the material MTL of the workpiece to be machined (for example, 535C)
seek.

Once the material MTL of the workpiece to be processed has been determined,
Step S2 is entered and the chip type (S) of the chip 26 attached to the tool 25 used for machining is determined. Therefore, the main control section 3 first selects the machining information shown in the rJ8 diagram stored in the machining program memory 17. INF is searched, the tool number TNO of the tool 25 used for machining is read out, and the tool data corresponding to the read tool number TNO is obtained from the tool data memory 10.Then, the main control unit 3
Search the read tool data and find the chip ID number DT of the chip 26 attached to the tool 25 used for machining.
Furthermore, the main control unit 3 reads out the TD number D
Read the chip data DATA shown in FIG. 9 corresponding to TI from the tool chip memory 11, search the tool chip memory 11, and select the chip type H from the classification code DT2.
5 (for example, cermet, etc.).

Note that the tool data memory 10 stores tool data for each tool mounted on the tool post, as described above.

Since the data is transferred from the tool code file 35 of the host computer 30 and stored, the tool data of the tool used for machining can be obtained without any problem by searching each tool data in the tool data memory 10. In addition, chip data DATA regarding the chips 26 attached to each tool on the tool post is transferred from the chip code file 36 of the host computer 30 and stored in the tool chip memory 11, so it is stored in the tool chip memory ll. By searching the chip data DATA related to the chip 26 attached to the tool 25 used for machining in each chip data DATA, the chip type H8 is determined.
can be found without any problem.

In this way, when the chip MIH8 of the chip 26 attached to the tool 25 used for machining is obtained, step S of the cutting condition determination program CP RO shown in FIG.
3, the main control unit 3 searches each cutting condition data DATl stored in the cutting condition memory 12 and reads out the cutting condition data DATl for the obtained chip type H8. , the standard cutting condition values for the tips 26 attached to each tool 25 of the tool rest in the cutting condition table TAB shown in FIG. 10 are obtained from the cutting condition file 37 of the host computer 30 as cutting condition data D A T 1 Therefore, the cutting condition memory 12 is transferred and stored.

The cutting condition data D A Tl for the chip type H8 obtained in step S2 can be read out without any problem6.
Then, the main control unit 3 further determines the workpiece material MT obtained in step S1 from the read cutting condition data D'ATL.
Cutting condition data for L, that is, specific cutting resistance, 5 circumferential speed V, and feed f are output to the maximum depth of cut calculation unit 22. For example, when the workpiece material MTL is 535C and the chip type HS is cermet, the specific cutting force X is 210 kg/am.
', peripheral speed V is 530 m/win and feed f is O, l
It becomes ss/rev.

In this way, the material M'rL of the workpiece to be machined and the chip type H5 of the chip 26 attached to the tool used for machining are determined. Once the cutting condition data DAT1 has been obtained, the process proceeds to step S4 shown in FIG.
is the cutting condition data DAT1 obtained in step S3, that is, the specific cutting force (= 210 kg/m"), the feed f (=O, Lm/rev), and the circumferential speed V (= 5
30 m/5in), the remaining cutting condition data DAT
The maximum depth of cut a is 1 (i.e.

Tools that can be removed in one cutting process when processing a workpiece 2
The maximum depth of cut calculation unit 22 calculates the maximum depth of cut (5).
command. In response to this, the maximum depth of cut calculation unit 22 reads the machine horsepower IF (for example, 101-P) and the machine efficiency (for example, 0.8) from the machine constant parameter memory 19, and reads out the machine horsepower H' and the above-mentioned machine horsepower. Based on the cutting condition data DAT1, the maximum depth of cut a is calculated using a known formula for determining the depth of cut.

The maximum depth of cut a is determined to be 31111 based on ATL and the like. ).

The maximum depth of cut a determined in this way reflects the performance of the machine tool that processes the workpiece (for example, the maximum rotation speed of the spindle).

The degree of finishing (i.e., rough/medium machining, finish machining potency, shape of the chip 26, depth of cut for the chip breaker formed on the chip 26 to be effective, etc.) was not determined. Therefore, it is necessary to check whether the value of the maximum depth of cut a obtained in step S4 is appropriate, taking these conditions into consideration.For this reason, the main control section 3
In step S5 shown in the figure, the first cutting depth correction section 23 is instructed to obtain the maximum circumferential speed Vmax of the workpiece. Then, the first cut correction unit 23 converts the machining information I N l? which is stored in the machining program memory 17 and constitutes the cutting program PRO shown in FIG. Search for the machining diameter D (for example, outer diameter DI = 100 mm), and search the mechanical constant parameter memory 19 shown in Fig. 2 to find the maximum rotation speed Nmax (for example, 3000 rpm) of the spindle. Based on the machining diameter and the machine maximum rotation speed Nmax, etc., the maximum circumferential speed of the workpiece Vmax, that is, π・D−N@a
Calculate speed/11000 (/5inJ) (For example, if the maximum circumferential speed ax is determined based on the above-mentioned machining diameter D (=100cm), it becomes 942m/inJ.)

When the maximum circumferential speed Vi+ax of the workpiece has been determined in this way, the process enters step S6 shown in FIG. 6.

The first cutting correction unit 23 determines that the obtained maximum circumferential speed Vmax is.

In step S3 shown in FIG. 5, it is determined whether the peripheral speed is greater than the peripheral speed V determined based on the chip type HS. When the circumferential speed ■ is larger than the maximum circumferential speed Vmax (that is, V>V
max), it is impossible for the circumferential speed to be larger than the maximum circumferential speed Vmax when machining the workpiece, so
Enter step S7.

The circumferential speed V applied to actual machining is assumed to be v=vmax.

When the circumferential speed ■ applied to actual machining changes, step S
Of course, the maximum depth of cut a obtained in step 4 will also change.

Again, assuming the maximum depth of cut a and the circumferential speed as V=Vmax, (1
) is calculated from the formula.

Note that the circumferential speed V obtained in step S3 is the maximum circumferential speed V@ax
If it is not larger (that is, V≦Vmax), it is possible to determine the circumferential speed V determined based on the chip type H8, so the maximum rotation speed Nraax of the spindle is considered, and the maximum speed determined in step S4 is determined. There is no need to correct the large depth a, and once the circumferential speed V used for actual machining has been determined, step S8 is entered. In step S8, the main control section 3.

The second depth of cut correction section 40 is instructed to determine whether or not the maximum depth of cut a should be corrected in consideration of the degree of finish of the workpiece to be machined. Then, the second cut correction unit 40 searches the machining information INF stored in the machining program memory 17, reads out the finishing degree, and determines that the machining to be performed on the workpiece is finishing machining based on the read finishing degree. Determine whether or not.

If the machining is finishing machining, the main control section 3 enters step S9. In finishing machining, it is not possible to apply the cutting conditions of the feed f and depth of cut a of the rough machining tool determined using the chip 84, etc., so the operator must enter the machining information IN.
The feed f and depth of cut a designated by F' are adopted as cutting conditions, and the cutting condition determination program CPRO is terminated. Furthermore, if the machining is not finishing machining (that is, rough machining), the cutting conditions determined in step 84 etc. can be applied, so step Sho is entered.

Step S1. In O, the second depth of cut correction section 40 adjusts the maximum depth of cut a determined in step S4, taking into consideration the chip shape.
Decide whether or not to modify. For that, firstly, chip 2
Find the cutting edge length a max of No. 6. That is, the second cut correction section 40 searches the chip data DATA shown in FIG. 9 stored in the tool chip memory 11 and reads the chip data DATA of the chip 26 used for machining. The second notch correction unit 40 then processes the read chip data DA.
By reading the cutting edge length (amax) DT7 written in TA, the cutting edge length amax of the chip 26 is determined, and the cutting edge length a wax is output to the third cutting depth correction section 41.

In this way, the cutting edge length a of the chip 26 used for machining is 8
When the cutting edge length of the tip 26 is determined and outputted to the third cutting depth correcting section 41, step Sll is entered, and the main control section 3 sets the effective cutting edge length of the tip 26 shown in FIG. The third cutting depth correction unit 41 is instructed to obtain the value obtained by multiplying the cutting edge length amax by a constant K (0<K<1). Note that a constant K corresponding to each chip 26 is stored in the system parameter memory 43. Therefore, the third
In response to this, the cut correction section 41 reads out the constant K stored in the system parameter memory 43.

Based on the constant K and the cutting edge length ax of the tip 26, the effective cutting edge length -amax is determined. Furthermore, the third depth of cut correction unit 41 determines whether the calculated effective cutting edge length -amax is larger than the maximum depth of cut a calculated by executing steps S1 to S10 (excluding step S9). to judge.

If the maximum depth of cut a is larger than the effective cutting edge length K''alla If so, the tip 26 is likely to bite into the workpiece and cause cutting damage, so the process proceeds to step S12, where the cutting depth a in actual machining is corrected to -amax, and the process proceeds to step S13.

In addition, if the maximum depth of cut a is not larger than -aIlaX in the effective cutting edge length of the insert 26 (i.e., if a≦ -a
For x), the tip 26 does not dig into the workpiece too much when processing the workpiece.

Step S13 shown in FIG. 7 is entered without correcting the maximum depth of cut a. In step S13, the main controller 3 controls the chip breaker 26 formed on the chip 26 shown in FIG.
The step A determines whether or not the depth of cut a obtained by executing steps S1 to 512 (excluding step S9) should be corrected, taking into consideration the depth of cut range for the depth of cut b to function effectively. 4 command to the cut correction section 42. Then, the fourth cutting depth correction section 42 changes the ninth cutting depth stored in the tool tip memory 11.
Search each chip data DATA shown in the figure, and chip data D of the chip 26 attached to the tool 25 used for machining.
The fourth depth of cut correction unit 42 reads out the cutting condition area (PL) DTII from the read chip data DA 'If' A.

(P2) Read the DT12, etc., and use these cutting areas (PL
) The diagram calculation unit 16 is caused to calculate and create the chip-breaking diagram CBD shown in FIG. 15 based on DTll and the like. Further, the fourth depth of cut correction unit 42 determines the maximum depth of cut a at which the chip breaker 26b can effectively function, based on the calculated die ageler 1% CB D, with respect to the feed f determined from the chip type H8. range (e.g.
Cutting range al≦a≦a2. Here, al means the lower limit value of the depth of cut a with respect to the feed f in the chip breaking diagram CBD shown in FIG. 15, and al means the upper limit value of the depth of cut a with respect to the feed f. ).

In this way, the cutting range of the chip breaker 26b (at≦a
≦a2), the fourth cutting depth correction unit 42 enters step 514 shown in FIG.
It is determined whether or not the depth of cut is within the appropriate cutting range (at≦a≦a2) determined from . If the depth of cut a is not within the depth of cut range (that is, a (a1, a2<a), the chip breaker 26b is not suitable for machining. The information is displayed on the display unit 6 such as the display shown in FIG. 2 to call the operator's attention.

When the cutting depth a is within the cutting range (i.e., al≦a
≦a2), the chip breaker 26b functions effectively even if the workpiece is machined with the depth of cut a, so the process proceeds to step 316 without correcting the maximum depth of cut a. In step S16, the main control unit 3 adopts the cutting condition data such as the circumferential speed V, depth of cut a, and feed f obtained so far for actual machining.

That is, the determined value is stored in the machining program memory 17 in a form that constitutes a part of the cannibal program PRO.

In this way, when one operator outputs a machining start command from the input unit 7 after the machine program PRO has been created including the determined values obtained from the cutting condition determination program CPRO, the main control unit 3 controls the machining program memory. Read the Canadian program PRO from 17 and read the program PRO.
Based on.

A main spindle and a tool post (not shown) are driven via the axis control unit 20, and a workpiece attached to the main spindle is machined using a tool attached to the tool post.

At this time, the time used for machining is determined for each chip 26, and based on this time, the contents of the usage time DT16 in the chip data DATA stored in the tool chip memory 11 are updated, and the contents of the usage time DT16 in the chip data DATA stored in the tool chip memory 11 are updated. The chip 26
The content will also be updated. In accordance with the update of the life data memory 13, the contents regarding the chip 26 in the life data file 39 of the host computer 30 are also updated.

In addition, in the embodiment described above, the tool 2 shown in FIG.
5 describes the case in which the diamond-shaped tip 26 shown in FIG. It goes without saying that the chip 26 may have the following characteristics. Also in this case, the side surface 26a of each chip 26
Attach barcode 27 to .

In the above-mentioned embodiment, the case where the barcode 27 is attached directly to the chip 26 has been described, but the chip 2
6 is too small to attach a bar code 27, as shown in FIG. You can.

In addition, in the above-mentioned embodiment, a case was described in which the barcode reader 21 was used as the barcode reading device, but the barcode reading device is not limited to this. ,
It can be anything.

(g) 8 Effects of the Invention As explained above, according to the present invention, the chip 26,
An identification data storage means such as a bar code 27 storing identification data such as a chip ID number DTI of the chip 26 is provided on a chip corresponding object such as a storage box 29 capable of storing the chip 26, and A barcode interpreter 9 for reading the identification data of the chip 26 stored in the data storage means. A data reading means such as a barcode reader 21 is provided, a chip data storage means such as a tool chip memory 11 storing chip data DATA corresponding to the identification data of the chip 26 is provided, and machining information IN is provided.
A machining program memory 17 storing F is provided, and further,
Based on the chip data DATA of the chip 26 and the machining information INF, optimal cutting conditions (for example, circumferential speed V, feed f, depth of cut a, etc.) according to the chip 26 and the workpiece are determined.
seek. cutting condition memory 12, maximum depth of cut calculation unit 22,
Second cut correction section 40. Since the configuration includes cutting condition data calculation and determination means such as the third depth of cut correction section 41 and the fourth depth of cut correction section 42, when cutting the workpiece, the processing information I
Workpieces to be processed by NF and tools used for processing 25
Then, the data reading means reads the identification data of the chip 26 attached to the tool 25 to obtain chip data D A TA corresponding to the identification data.

Then, the cutting condition data calculation and determination means can determine the optimum cutting conditions according to the chip 26 having the chip data DATA and the workpiece to be machined. As a result, optimal cutting conditions depending on the workpiece and the tip 26 used for machining can be automatically determined without human intervention.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a pre-production system to which an embodiment of the numerical control device for a multi-tasking machine tool according to the present invention is applied, and FIG. 2 is a control block diagram of the numerical control device shown in FIG. 1. FIG. 3 is a diagram showing a state in which a barcode attached to a tool tip is read using a barcode reader, and FIG. 4 is a perspective view showing a barcode attached to a tool tip. Figures 5 to 7 are flowcharts of the cutting condition determination program, Figure 8 is a diagram showing the cutting program stored in the machining program memory, Figure 9 is a diagram showing chip data, and Figure 10 is a diagram showing the cutting condition determination program. A diagram showing a condition table. FIGS. 11 to 13 are diagrams showing examples of various types of chips attached to tools, and FIG. 14 is a diagram showing a storage box for storing small chips with a bar code attached. FIG. 15 is a diagram showing an example of a chip breaking diagram. 2... Numerical control device 9... Data reading means (barcode interpretation section) 11... Chip data storage means (tool chip memory) 12... Cutting Condition data calculation determining means (cutting condition memory) 17... Machining program memory 21...
・Data reading means (barcode reader) 22... Cutting condition data calculation determining means (maximum depth of cut calculation section) 25... Tool 26... Chip counterpart (chip) 27...
...Identification data storage means (barcode) 29...
・Chip counterpart (storage box) 40...Cutting condition data calculation and determination means (second depth of cut correction section) 41...Cutting condition data calculation and determination means (third depth of cut correction section) 42... Cutting condition data calculation determining means (fourth depth of cut correction unit) D A 'r 1... Cutting conditions (cutting condition data) D A 'r A... Chip data INF
...Processing information DTI...Identification data (chip ID number)
Figure 1, Figure 3, Figure 14, Figure 15 -H (-a/rev)

Claims (1)

[Scope of Claims] A chip counterpart corresponding to a chip is provided with identification data storage means storing identification data of the chip, and data reading means reads the identification data of the chip stored in the identification data storage means. a chip data storage means storing chip data corresponding to the identification data of the chip; a machining program memory storing machining information; and a numerical control device for a multi-tasking machine tool, which is configured with cutting condition data calculation and determination means for determining the optimum cutting conditions according to the workpiece.