JP2850143B2 - Machining control method for machine tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a). BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machining control method for a machine tool that can easily set tool data required for machining a workpiece.

(B). 2. Description of the Related Art Conventionally, when machining a workpiece using a machine tool such as a machining center, when a tool used for machining is set in a tool magazine of the machine tool, a tool number, a tool name, and a tool diameter of the tool are used. Tool data such as tool length, life time, and use time are stored in a predetermined storage area such as a tool data memory in a form corresponding to a tool storage pocket of a tool magazine.

(C). Problems to be Solved by the Invention However, in such a method, the tools stored in the tool storage pockets of the tool magazine and the tool data correspond one-to-one, so every time the tool to be stored in the tool storage pocket changes. Need to re-enter the tool data of the tool,
There was a disadvantage that it was extremely complicated and time-consuming.

The present invention has been made in view of the above circumstances, and has as its object to provide a machining control method for a machine tool that can easily set tool data for a tool set in a tool magazine or the like.

(D). Means for Solving the Problems That is, the present invention relates to a machine tool (7) having a tool storage position (7) in which a tool storage position (7a) is set, and a memory device (16) storing tool data (DAT). In (1), the number of tools (9) exceeds the number of tools stored in the tool storage means (7).
Tool data (DAT) is stored in the memory means (16), and a tool (9) actually used for the work is stored in the tool storage position (7a) of the tool storage means (7) when the work is processed. And the memory means (1
Of the tool data (DAT) stored in (6), the tool data (DAT) relating to the tool (9) stored in the tool storage position (7a) is stored in the position information (7a) corresponding to the tool storage position (7a). PKN) is input, and the workpiece is machined based on the selected tool data (DAT).

Note that the numbers and the like in parentheses are for convenience showing the corresponding elements in the drawings, and therefore, this description is not limited to the description on the drawings. The following “(e).
The same applies to the column of “action”.

(E). Operation With the above-described configuration, according to the present invention, only the tool data (DAT) related to the tool (9) used for machining the work is selectively set from the tool data (DAT) stored in the memory means (16) in advance. Act to be.

(F). Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a machining center as an example of a machine tool to which an embodiment of a machining control method in a machine tool according to the present invention is applied, FIG. 2 is a view of the machining center shown in FIG. FIG. 1 is a control block diagram of the machining center shown in FIG. 1, FIG. 4 is a schematic diagram showing an example of tool data stored in a tool data memory, and FIG. 5 is a diagram showing an example of tool data displayed on a display. It is.

As shown in FIG. 1, a machining center 1, which is a machine tool, has a machine body 2, and a table 3 on which a work is mounted is provided on the machine body 2 so as to be movable in two directions perpendicular to each other in a horizontal plane. Have been. A spindle 5 on which a tool is mounted is rotatably provided above the table 3 in the drawing, and a tool changing device 6 is provided on the left side of the spindle 5 in FIG. As shown in FIG. 2, the machine body 2 is provided with a disk-shaped tool magazine 7 rotatably driven, and a plurality of tool storage pockets 7a are provided on an outer peripheral portion of the tool magazine 7. Are arranged so that the tools 9 can be removably stored. Each tool storage pocket 7a of the tool magazine 7 has a unique pocket number PKN described later.

The machining center 1 has a main control unit 11 as shown in FIG.
Input unit 13 such as a keyboard, display unit 14, machining program memory 15, tool data memory 16, machining control unit 17,
The input error determination unit 19 and the alarm control unit 20 are connected. The display unit 14 includes a display control unit 14a and a display 14b, and the processing control unit 17 is connected to the table 3, the spindle 5, the tool changer 6, and the tool magazine 7. The tool data memory 16 has, for example, a fourth
As shown in the figure, all the tools 9 (160 in FIG. 4) that can be used in the machining center 1, that is, the tools 9 exceeding the number of tools stored in the tool magazine 7 (the number of tool storage pockets 7a). An extended tool data file ETD in which the tool data DAT is registered in advance is stored,
These extended tool data files ETD contain tool data DTA
Are stored in a form arranged for each tool number TN of the tool 9.

That is, the digits of “TNo.” Shown in FIG.
The numerical value of “0” is stored as the tool number TN of each tool 9, and the name TNM of each tool 9 is stored in the “tool name” digit on the right side of the tool number TN in the drawing. Further, the digits of “Nominal diameter”, “Tool diameter”, “Length”, “Cutting edge correction”, “Thrust”, “Horse power”, “Life” and “Usage” respectively indicate the tool 9
Nominal diameter, actual diameter of tool 9, length of tool 9, tool 9
The cutting edge position correction amount, the thrust coefficient of the tool 9, the horsepower coefficient of the tool 9, the life time of the tool 9, and the use time of the tool 9 are stored as tool data DAT for each tool 9, and the tool magazine 7 is stored in the tool magazine. "PKN" indicating the number of the pocket 7a (described later)
o. ”are all blank. Thus, for example, "TN
The tool 9 whose tool number TN stored in the digit of “o.” is “1”
Is "Face Mill" as the name TNM in the column of "Tool Name"
However, `` 50.A '' as the nominal diameter in the `` nominal diameter '' digit, `` 50 '' as the actual diameter in the `` tool diameter '' digit, `` 100 '' as the length in the `` length '' digit, "0" as the cutting edge position correction amount in the digit of "cutting edge correction", "50" as the horsepower coefficient in the digit of "hp", "200" as the life time in the digit of "life",
Further, since “115” is stored as the usage time in the “use” digit, the tool 9 with the tool number TM of “1” is
A face mill with a nominal diameter of "50.A" and a diameter of 50 mm and a length of 100 mm. The cutting edge of the tool 9 is located at the tip of the tool. This indicates that the usable time to reach the life of the tool 9 is 200 minutes, and the time actually used so far is 115 minutes. For example, for the tool 9 whose tool number TN is “10” stored in the “TNo.” Digit, “drill” is given as the name TNM in the “tool name” digit, and the nominal diameter is given in the “nominal diameter” digit. "7." as the actual diameter in the "tool diameter" digit, and "200" as the length in the "length" digit
However, `` 2.07 '' is set as the cutting edge position correction amount in the digit of `` Cutting edge correction ''.
But the thrust coefficient is "30" as the thrust coefficient, and "horsepower"
`` 30 '' as the horsepower coefficient, `` 200 '' as the life time in the `` Life '' digit, and `` 76 '' as the usage time in the `` Use '' digit. "1
The tool 9 which is “0” has a nominal diameter of “7.”, a diameter of 7 mm, and a length of 200
mm, and the cutting edge of the tool 9 is 2.07 mm from the tool tip.
mm, the optimum thrust of the tool 9 is 30% of the Z-axis thrust of the machining center 1, and the optimum horsepower of the tool 9 is 30% of the horsepower of the drive motor of the main shaft 5. In addition, it shows that the usable time to reach the life of the tool 9 is 200 minutes, and the time actually used so far is 76 minutes.

Since the machining center 1 has the above-described configuration, when machining a workpiece using the machining center 1, the operator first refers to the machining program PRG corresponding to the workpiece to be machined while referring to FIG. A tool 9 actually used for machining to be performed is stored in a tool storage pocket 7a of a tool magazine 7 constituting the machining center 1 shown in FIG. Thus, when the tool 9 to be used for machining to be performed is set in the tool magazine 7 of the machining center 1, the tool 9 set in the tool magazine 7 is set.
(That is, an operation of designating which tool 9 is stored in each tool storage pocket 7a of the tool magazine 7).

To do so, the operator outputs a tool data display command DC to the main control unit 11 via the input unit 13 shown in FIG.
Then, the main control unit 11 instructs the display control unit 14a of the display unit 14 to display the tool data DAT stored in the extended tool data file ETD. In response to this, the display control unit 14a reads the extended tool data file ETD stored in the tool data memory 16, and displays each tool data DAT of the read extended tool data file ETD on the display.
Display on 14b.

Then, the tool data DAT relating to each tool 9 is displayed on the display 14b, for example, as shown in FIG. In the case of the display 14b shown in FIG. 5,
Due to the size of the display 14b, only the tool data DAT relating to the 16 tools 9 whose tool numbers TN stored in the digits of “TNo.” Are “1” to “16” are displayed. The tool data DAT for the remaining tools 9, i.e., 144 tools 9 having the tool numbers TN of "17" to "160" are also stored in the subsequent screens and thereafter, and are given by a predetermined command operation via the input unit 13. The tool data DAT relating to the tool 9 having an arbitrary tool number TN can be displayed on the display 14b.

Thus, each tool 9 in the extended tool data file ETD
When the tool data DAT related to is displayed on the display 14b, the operator operates the input unit 13 to select the tool 9 to be used for the machining to be performed from among the tools 9 on the display 14b. That is, only for the tool 9 set in the tool magazine 7 in preparation for the next machining (that is, the tool 9 used for the machining to be performed from now on), the pocket number PKN of the tool storage pocket 7a in which the tool 9 is stored.
Is input to the "PKNo." Digit on the display 14b via the input unit 13, and the other tools 9 are left blank without inputting the pocket numbers PKN of the tool storage pockets 7a.

For example, if the tool number TN is "1", "3", "4",
In order to perform machining of the workpiece using the six tools 9 of “5”, “6” and “10”, the tool 9 with the tool number TN of “1” is placed in the first pocket (that is, the pocket) of the tool magazine 7. The number PKN means “1” which means the tool storage pocket 7a.
The same applies hereinafter. ), The tool 9 with the tool number TN “3” is placed in the fifth pocket of the tool magazine 7, the tool 9 with the tool number TN is “4” in the 20th pocket of the tool magazine 7, and the tool number TN is “5”. The tool 9 of the tool magazine 7 is placed in the pocket 21 of the tool magazine 7, the tool 9 with the tool number TN is "6" in the pocket 22 of the tool magazine 7, and the tool 9 with the tool number TN of "10" is placed in the pocket 30 of the tool magazine 7. No. 5 when stored in the number pockets respectively.
As shown in the figure, the tool number TN stored in the digit of "TNo."
Is stored as the pocket number PKN in the digit of “PKNo.” Of the tool 9 whose tool number is “1”, and the tool 9 whose tool number TN stored in the digit of “TNo.” Is “2” is Since it is not used for machining, the "PKNo." Digit of the tool 9 is left blank, and the "PKNo." Of the tool 9 whose tool number TN stored in the "TNo.""5" is stored in the digit as the pocket number PKN, and "20" is stored as the pocket number PKN in the "PKNo." Digit of the tool 9 whose tool number TN stored in the "TNo." Digit is "4". The tool number TN stored in the digit “TNo.” Is stored as “PNo.
“1” is stored as the pocket number PKN, and the “PKNo.” Of the tool 9 whose tool number TN stored in the digit of “TNo.” Is “6”
, Store “22” as the pocket number PKN,
The tool 9 with the tool numbers TN "7", "8" and "9" stored in the digits of "o." is not used for the machining, so the "PKNo." digits of these tools 9 are left blank. TN
The tool 9 whose tool number TN stored in the digit of “o.” is “10”
In the “PKNo.” Digit, “30” is stored as the pocket number PKN, and the tool number TN stored in the “TNo.” Digit is “1”.
Since the tools 9 of “1” or more are not used for the machining, the digits of “PKNo.” Of these tools 9 are left blank. Thus, each pocket number PKN stored in the digit of “PKNo.” On the display 14b is stored in the extended tool data file ETD of the tool data memory 16, and the selection operation of the tool 9 used for the processing is completed here. I do.

At this time, as described above, by inputting only the pocket number PKN of the tool storage pocket 7a to the tool 9 stored in the tool storage pocket 7a of the tool magazine 7 on the display 14b, the tool data memory 16 From the tool data DAT registered in advance in the extended tool data file ETD for the tool 9 used for machining the workpiece
DAT can be selected. Therefore, when machining a workpiece, the tool numbers of all the tools 9 used for the machining
TN, name TNM, nominal diameter, actual diameter, length, cutting edge position correction amount, thrust coefficient, horsepower coefficient, tool time DAT, etc. Tool data DAT can be set easily and quickly.

Thus, when the operation of selecting the tool 9 to be used for the machining to be performed is completed, the operator places the workpiece to be machined on the table 3 shown in FIG. A machining start command SC is output to the control unit 11. Then, the main control unit 11 instructs the input error determination unit 19 to determine whether there is an input error of the pocket number PKN. In response to this, the input error determination unit 19 reads a machining pro program PRG corresponding to the workpiece to be machined from the machining program memory 15 and reads the machining program PRG.
Read all the tool numbers TN of the tools instructed to be used for machining. Further, a tool magazine 7 storing the tools 9 corresponding to the read tool numbers TN.
It is determined whether the pocket number PKN of the pocket tool PKN is stored in the extended tool data file ETD.
If it is determined that there is at least one tool 9 that does not store the data, it is determined that it is impossible to perform proper machining, and the input error determination unit 19 sends an alarm signal to the alarm control unit 20. Output SG1. In response to the alarm signal SG1, the alarm control unit 20 activates alarm means (not shown) such as an abnormal warning light to notify the worker of the pocket number PK.
Notifies that an input error of N has occurred.

On the other hand, each tool 9 having the read tool number TN
No. PKN for extended tool data file ETD
If the input error determination unit 19 determines that the work is mounted on the table 3, the input error determination unit 19 instructs the processing control unit 17 to start processing in order to start processing the work mounted on the table 3. Outputs signal SG2. The machining start signal SG2
In response to this, the machining control unit 17 reads the machining program PRG corresponding to the workpiece to be machined from the machining program memory 15, searches the tool data memory 16, and retrieves the tool stored in each tool storage pocket 7 a of the tool magazine 7. Tool data DAT for No. 9 (that is, the pocket number
The tool data DAT for the tool 9 in which the PKN is stored is read. Further, the machining control unit 17 drives the tool magazine 7 to rotate based on the read machining program PRG and the read tool data DAT, and causes the tool changer 6 to connect the tool magazine 7 to the spindle 5. The tool 9 mounted on the main shaft 5 performs machining on the workpiece while horizontally moving and driving the table 3 on which the workpiece to be machined is mounted while exchanging tools between the workpieces.

In this way, the machining program PRG and the tool data D
When the machining of the workpiece based on the AT is completed and the next workpiece is machined, the operator, when the tool 9 to be used for the machining to be carried out is set in the tool magazine 7 of the machining center 1, starts the tool magazine. It is necessary to perform the designated operation of the tool 9 set to 7 on the extended tool data file ETD (when using the same tool 9 as the immediately preceding machining, it is not necessary). At this time, as described above, only by inputting the pocket number PKN of the tool storage pocket 7a as appropriate on the display 14b, the tool data DAT registered in advance in the extended tool data file ETD of the tool data memory 16 is stored. Among them, it is possible to easily select and set the tool data DAT relating to the tool 9 used for machining the work.

In the embodiment described above, the machining center 1
However, the present invention can be applied to any machine tool as long as it has a tool storage means such as a tool magazine 7 and a memory means such as a tool data memory 16 for storing an extended tool data file ETD. Needless to say,

(G). As described above, according to the present invention, the tool storage means such as the tool magazine 7 in which the tool storage positions such as the tool storage pocket 7a are set, and the tool data memory 16 and the like for storing the tool data DAT are provided. In a machine tool such as a machining center 1 having a memory means, tool data DAT relating to a tool 9 exceeding the number of tools stored in the tool storage means is stored in the memory means, and is actually used for the processing when processing a workpiece. The tool 9 is stored in the tool storage position of the tool storage means, and the tool 9 stored in the tool storage position among the tool data DAT stored in the memory means.
The tool data DAT is selected by inputting position information such as a pocket number PKN corresponding to the tool storage position, and the workpiece is machined based on the selected tool data DAT. The setting of the tool data DAT necessary for machining the workpiece is completed only by a simple operation such as an operation of inputting position information. As a result, even when the tool 9 to be stored in the tool storage position of the tool storage means of the machine tool changes when processing the work, it is not necessary to re-input the tool data DAT of the tool 9 and it is necessary to process the work. Tool data DAT can be set easily and quickly.

[Brief description of the drawings]

FIG. 1 is a front view of a machining center as an example of a machine tool to which an embodiment of a machining control method in a machine tool according to the present invention is applied, FIG. 2 is a view of the machining center shown in FIG. FIG. 1 is a control block diagram of the machining center shown in FIG. 1, FIG. 4 is a schematic diagram showing an example of tool data stored in a tool data memory, and FIG. 5 is a diagram showing an example of tool data displayed on a display. It is. 1 Machine tool (machining center) 7 Tool storage means (tool magazine) 7a Tool storage position (tool storage pocket) 9 Tool 16 Memory means (tool data memory) DAT Tool data PKN … Location information (pocket number)

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23Q 15/00

Claims (1)

(57) [Claims] 1. A machine tool having a tool storage means in which a tool storage position is set and a memory means for storing tool data, wherein tool data relating to tools exceeding the number of tools stored in the tool storage means is stored in the memory means. In the meantime, at the time of machining the work, the tool actually used for the machining is stored in the tool storage position of the tool storage means,
Among the tool data stored in the memory means, tool data on the tool stored in the tool storage position is selected by inputting position information corresponding to the tool storage position, and the selected tool data is A machining control method for a machine tool configured to perform machining of the workpiece based on the machining.