JPH0435839A - Numerical control for lathe - Google Patents

Abstract

PURPOSE:To improve the operation rate of a lathe and carry out the speedy working by carrying out the clamp for a tool rest according to a tool dividing instruction when the turn of a tool rest is executed according to a tool rest dividing instruction and the shaft shift according to a shaft shift instruction is completed. CONSTITUTION:When the tool rest position SP advances to a tool rest unclamp- enabled region SUS, a temporary enabled signal SX is sent into a tool rest control part 10 from a temporary enabled signal generating part 22. Without waiting the completion of the shaft shift, a tool rest 18 is unclamped by an unclamp control part 11 according to a tool dividing instruction ST and a temporary enabled signal SX which are sent into the tool rest control part 10, and the tool rest 18 is turned by a turn control part 12 according to a tool dividing enabled signal SI sent into the control part 10, and tool rest tool dividing is performed. At the time point when the shaft shift is completed, a shaft shift completion signal SE is sent into a working program recognition part 19 and the control part 10 from a shaft shift completion signal generation part 9. Then, the tool rest 18 is clamped by a clamp control part 13 according to the shaft shift completion signal SE sent into the tool rest control part 10.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a numerical control device for a lathe having a function of controlling tool post indexing.

(Prior Art) FIG. 4 is a block diagram showing an example of a numerical control device for a lathe having a function of controlling a conventional tool post tool index.
A Kani program 1 stored in the form of a paper tape or the like is stored and stored in a Kani program storage section 3 via a Kani program manual section 2, and is sequentially read out block by block to a Kani program interpretation section 4 and its meaning is interpreted. Ru.

If there is an axis movement command field in the cannibal program, the axis movement command SA is sent from the cannibal program interpreter 4 to the axis movement calculator 5, and the axis movement is calculated.
The calculation result SC is sent to the servo control section 6 and the machine 7
motors, etc. are controlled. The turret position sp during the axis movement is detected by the position detection section 8, and an axis movement completion signal SE is sent from the axis movement completion signal generation section 9 to the knife program interpretation section 4 when the axis movement is completed.

On the other hand, the turret swivelable area data setting unit 15 has data set in advance as an area of the turret position where the turret can swivel (hereinafter referred to as the turret swivelable area) STS, which is detected by the position detection unit 8. The comparison unit 16 compares the turret position sp and the turret rotatable area STS.

Then, when the tool post position SP enters the tool post rotation possible region STS, the tool indexable signal 51 is sent from the tool indexable signal generating section 17 to the tool post control section IO.

Further, if there is a tool indexing command ST in the machine program, the tool index command ST is sent from the machine program interpreter 4 to the tool post control unit 10 at the time when the axis movement completion signal SE is received. .

Then, in accordance with the tool index enable signal SI and tool index command ST sent to the tool post control section 10, the unclamp control section 11. The rotation control section 12 and the clamp control section 13 sequentially execute unclamping, rotation and clamping of the tool post 18, and only control tool indexing of the tool post. Then, when the tool rest 18 is clamped, a tool indexing completion signal SIE is sent from the tool indexing completion signal generating section 14 to the machine program interpreting section 4.

(Problems to be Solved by the Invention) In the conventional numerical control device for a lathe having the function of controlling the tool indexing of the tool post described above, the operation when an axis movement command and a tool indexing command are given to the cutting program is as follows. First, move the axis to the commanded position according to the axis movement command, and after confirming that the turret position is within the turret rotation range and that the movement has been completed, follow the tool indexing command. The turret is unclamped, the turret tool is rotated and indexed, and the turret is clamped and the turret tool is indexed. Therefore, the axis movement command and the tool indexing command must be executed sequentially, which has the drawback of extending the non-cutting time of the lathe.

The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a numerical control device for a lathe that can simultaneously execute an axis movement command and a tool indexing command.

(Means for Solving the Problems) The present invention relates to a numerical control device for a lathe having a function of controlling tool indexing of a tool post by sequentially unclamping, rotating and clamping a tool post of a lathe. The above-mentioned object of the present invention is provided with a first setting means for setting data on a possible unclamping area of the tool post, and a second setting means for setting data on a possible rotation area of the tool post; When a movement command and a tool indexing command are recognized, when the position of the tool rest during axis movement according to the axis movement command enters an unclamping possible range set in the first setting means, The tool post is unclamped according to the tool indexing command, and the position of the tool post during axis movement according to the axis movement command is within a rotation possible range set in the second setting means. When the turret is rotated according to the tool indexing command, and when the axis movement according to the axis movement command is completed, the turret is clamped according to the tool indexing command. achieved.

(Function) In the present invention, an area is set in advance that does not cause interference with the main spindle, workpiece, etc. even if the tool post is unclamped or rotated during tool post tool indexing, If someone comes into the turret or its area, unclamping and turning are performed immediately, so non-cutting time can be shortened.

(Example) FIG. 1 is a block diagram showing an example of a numerical control device for a lathe having a function of controlling tool indexing of a tool post according to the present invention, corresponding to FIG. The explanation will be omitted.

The numerical control device for a lathe of the present invention is provided with a machine program recognition section 19 in place of the conventional machine program interpreter 4, and further includes a tool post unclampable area data setting section 20.
．． A comparison section 21 and a tentative possibility signal generation section 22 are added.

The axis movement command S^ and tool indexing command S■ in the cannibal program stored in the cannibal program storage unit 3 are recognized by the cannibal program U recognition unit 19, and the axis movement command SA is used to move the axis. The tool index command SI is sent to the calculation section 5, and the tool index command SI is sent to the tool post control section IO.

In the tool post unclampable area data setting section 20, data is set in advance to the area of the tool post position where the tool post can be unclamped for tool post indexing (hereinafter referred to as the tool post unclampable area) 5IIS. The comparison unit 21 compares the tool post position SP detected and detected by the position detection unit 8 with the tool post unclampable area SUS. Then, when the tool post position SP enters the tool post unclamp possible area SUS, a temporary possibility signal SX is sent from the temporary possibility signal generation section 22 to the tool post control section 10.

Then, without waiting for the axis movement to be completed, the tool post 18 is unclamped by the unclamp control unit 11 in accordance with the tool indexing command ST and temporary enable signal Sx sent to the tool post control unit 10, and the tool post The tool post 18 is rotated by the rotation control section 12 in accordance with the tool index enable signal SI sent to the table control section 10, and the tool post tool indexing is performed. Then, when the axis movement is completed, the axis movement completion signal S
ε is sent from the axis movement completion signal generation section 9 to the machine program recognition section 19 and the tool post control section 10.

Then, in accordance with the axis movement completion signal SE sent to the tool post control section 10, the clamp control section 13 controls the tool post 18.
is now clamped.

In such a configuration, an example of its operation will be explained with reference to the flowchart in FIG. 2 and a specific example of the lathe operation in FIG. 3.

The operator sets the turret rotatable area indicated by the dashed line in the third figure in the turret rotatable area data setting section 15 (step S1), and sets the turret unclampable area indicated by the double dotted chain line in the figure to the tool Set data in the table unclampable area data setting section 20 (step S2)
.

The crab program recognition section 19 is connected to the crab program storage section 3.
When the tool index command "TOIOI" and the axis movement command "GOO" to move the tool post to the position where the tool index is executed are recognized in the machine program stored in the machine (step S3), the The axis movement command "GOO" is sent to the axis movement calculation section 5, and the tool index command "TO" is sent to the axis movement calculation section 5.
The axis movement calculation unit 5 sends the axis movement command “Goo” to the turret control unit lO.
) (7) Calculate the axis rotation from position to (Xt, Zt) f) position, and send the calculation result to the servo control unit 6. The servo control unit 6 starts the axis movement (■ in the third diagram) according to the calculation result (step 54).

Comparison unit 2] determines whether or not the turret position detected by the position detection unit 8 is within the turret unclampable area determined by the turret unclampable area data setting unit 20 (Step S5). If the position is outside the area where the turret can be unclamped (■ in the third diagram), continue the axis movement roughly (step s4), and then move the turret to the position where the turret is within the area where the turret can be unclamped (■ in the third diagram). Once entered, the tentative enable signal generation section 22 sends a tentative enable signal to the tool post control section 10.

The unclamp control unit 11 of the tool post control unit IO unclamps the tool post 18 based on the tool indexing command TOIO+” from the machine program recognition unit 19 and the provisional possibility signal from the provisional possibility signal generation unit 22 (step 56).

The comparison unit 16 determines whether or not the tool post position from the position detection unit 8 is within the tool post swivelable area from the turret swivelable area data setting unit 15 (step S7). When the tool enters the swiveling area (■ in the third diagram), the tool indexable signal generation section 17 sends a tool index processing signal to the tool post control section 10.

The rotation control section 12 of the tool post control section 10 operates the tool post according to the tool index enable signal from the tool index enable signal generation section 17.
A turn (■ in the third diagram) is performed (step S8).

Then, the axis movement completion signal generation unit 9 detects that the tool rest position is (x
When reaching the position (t, zt), an axis movement completion signal is sent to the knife program recognition section 19 and the tool post control section 10.

The clamp control unit 13 of the turret control unit 10 clamps the turret 18 (■ in the third diagram) in response to the axis movement completion signal from the axis movement completion signal generation unit 9 (step 510).

Then, the tool indexing completion signal generating section 14 sends a tool indexing completion signal to the machine program U recognition section 19, and all processing ends.

(Effects of the Invention) As described above, according to the lathe numerical control device having the function of controlling the tool post tool indexing of the present invention, since axis movement and tool post tool indexing can be performed simultaneously, the lathe It is possible to increase the operating rate and perform rapid processing.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an example of a numerical control device for a lathe having the function of controlling the tool indexing of the tool post of the present invention, Fig. 2 is a flowchart explaining an example of its operation, and Fig. 3 is a specific example of the lathe operation. FIG. 4 is a block diagram showing an example of a conventional numerical control device for a lathe having a function of controlling tool indexing of a tool post. DESCRIPTION OF SYMBOLS 1... Kani program, 2... Kani program manual section, 3... Kani program storage section, 4... Kani program interpretation section, 5... Axis movement calculation section, 6... Servo control section , 7... Machine, 8... Position detection section, 9...
Axis movement completion signal generation unit, 10... Turret control unit, 11
...Unclamp control section, 12...Swivel control section,
13... Clamp control unit, 14... Tool indexing completion signal generation unit, 15... Turret rotation possible area data setting unit, 16... Comparison unit, 17... Tool indexing enable signal generation 18...Turret post, 19...Cannibal program recognition unit, 20...Turret unclamp possible area data setting unit, 21...Comparison unit, 22...Temporary possibility signal generation unit. July 5, 1990 Commissioner of the Japan Patent Office Yoshi 1) Display of the case of Takeshi Moon 1990 Patent Application No. 138930 Name of the invention Relationship with the case of person who corrects numerical control device for lathe Patent applicant Inu Co., Ltd.

Claims (1)

[Claims] 1. In a numerical control device for a lathe that has a function of controlling tool indexing of the tool post by sequentially unclamping, rotating, and clamping the tool post of the lathe, data is set for an area in which the tool post can be unclamped. a first setting means, and a second setting means for setting data on a possible rotation area of the tool post.
setting means, and when an axis movement command and a tool indexing command are recognized, the position of the tool post during axis movement according to the axis movement command is determined by the unclamp setting set in the first setting means. When entering the possible range, the tool post is unclamped in accordance with the tool indexing command, and the position of the tool post during axis movement in accordance with the axis movement command is set in the second setting means. When the turret enters a possible turning area, the turret is rotated according to the tool indexing command, and when the axis movement according to the axis movement command is completed, the turret is rotated according to the tool indexing command. A numerical control device for a lathe, characterized in that it performs clamping.