JPS63180404A - Machining motion set device for hole machining by machine tool - Google Patents

Abstract

PURPOSE:To provide a machining condition having pliability and practicability and optimum to fixed cycle machining, by setting each motion data and each motion speed available when a cycle machining position, decided by means of program data, is the inlet part or the outlet of a hole. CONSTITUTION:A machining position deciding part 6 decides a machining posi tion based on an escape amount and a depth of cut per one time. Based on whether a depth of cut is larger or equal to a cutting amount of an inlet part, an inlet part data set part 7 distributes given data to a cut motion processing part 91a and a return motion processing part 92a, and the speed of a flow rightward train is effected by speed set parts 91b and 92b. Based whether depth of cut is larger or equal to an outlet part cut amount, an outlet part data set part 8 distributes given data to a cut motion processing part 91a, a return motion processing part 92a, a shift motion processing part 93a, and a dwell motion processing part 94a, and the speed of a flow rightward train is set by means of speed set parts 91b-94b. The speed set results of an outlet part and inlet parts are collected as a machining condition into cycle data by means of a cycle data set part 10 to store in a cycle data memory 10a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a machining operation setting device for hole machining of a machine tool, and particularly to a machining operation setting device for setting cycle operations.

[Conventional technology]

In recent years, in FMS, everything from schedules to machining and setup plans are operated online by computer, but there is currently a lack of consistency in the creation of machining information that is downloaded to the FMS from the presentation of CAD data corresponding to the upper level. , remains fixed, partial, and fragmentary.

The reality is that the current CAD/CAM system, even if it is a series, lacks a system, lacks flexibility, and cannot be put to practical use. Machining information is not just NC data necessary for automatic operation of NC machine tools. The decision as to what kind of concept and what kind of machining method to use for machining a part greatly affects the NC data that is to be created. However, the main purpose of current CAM is to automatically create processing information for parts, and it has not reached the point where it takes into consideration the evaluation of production methods in FMS and the like. On the other hand, CAD parts drawing data and material drawing data merely represent the final resultant machining shape, and do not help create NG data by incorporating machining concepts and machining methods using CAD information. do not have.

[Problem that the invention seeks to solve]

Among them, there are even more unique circumstances in hole machining, and N
Even in C data, there are many special parts such as using predetermined patterns such as fixed cycles. As shown in Fig. 4(a) and (b), the general pattern for hole machining is to set an initial point ■, a machining start point R, and a machining end point Z, and then move from the initial point ■ to the machining start point R. Fast forward the tool until
Normally, the tool is fed for cutting from the machining start point R to the machining end point Z, then the tool is returned from the machining end point Z to the machining start point R using a different cutting feed, and then returned to the initial point I by rapid traverse. , the machining position may be shifted near the machining end point Z, or a dwelling operation may be performed in which machining is continued while the tool movement is stopped. NC for such hole machining
Since it is difficult to make detailed settings in a machining program, various canned cycles that combine several hole machining patterns are usually prepared separately, so that the NC machining program only needs to call them. FIG. 5 shows an extremely complex example of such a fixed cycle, with all the elements forming the fixed cycle being shown as follows.

Ql: Depth of cut per cut, Q2: Relief amount, Q3: Pullback amount, Q4: Inlet cutting amount, Q5: Exit cutting amount, Q6. Dwell amount, Ql: Shift amount, By preparing several types of cycle patterns like this and inputting the cycle type and 7 parameters, or not inputting them, you can determine the movement method and amount of movement for hole machining. , the following processing conditions are set for them.

vl: Main cutting speed, v2: Sub-cutting speed, fl: Main feed speed, f2i Relief feed speed, f3: Sub-feed speed, f4: Feed speed for large plates. Conventionally, the parameters are entrance section cutting lQ4 and exit section cutting. However, as shown in Fig. 4, the machining area is only divided into two parts, the inlet part and the outlet part, and most of the machining work is done at the inlet part. processed in the designated area. However, it is not necessary to perform most parts of hole machining under the same machining conditions; the torque is large at the entrance and exit ends of the workpiece, and not so much in the middle, so the cutting feed rate should be adjusted accordingly. It would also be more reasonable to change it.

The present invention has been proposed in view of the above circumstances, and provides a machining operation setting device for hole machining of a machine tool that is flexible and practical, and can obtain optimal machining conditions for fixed cycle machining. The purpose is to

[Means for solving problems]

In the present invention, the means taken to solve the above problems include a machining position determination section that is activated by a cycle command and determines a cycle machining position based on data during an NC increase machining program; An entrance section data setting section that sets machining operation data when the position is at the 6A exit section, an exit section data setting section that sets the machining operation data when the position is at the 6A exit section, and both of these machining operations A machining operation setting device for hole machining of a machine tool, characterized by comprising an operation-specific speed setting section that sets the operation speed separately for each operation of cutting operation, return operation, shift operation, and dwell operation. be.

[Function] The machining position determination unit is activated by the cycle command and determines the cycle machining position based on the data in the NC incremental machining program, and the entrance data setting unit determines the machining operation data when the position is the entrance of the hole. and the exit section data setting section sets machining operation data when the position is the entrance section of the hole. The operation-specific speed setting section sets the operation speed for each of these machining operations by dividing them into each operation of cutting operation, return operation, shift operation, and dwell operation.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a machining operation setting device for hole machining according to the present invention.

In Fig. 1, the machining operation setting device includes a CPU 1 that also serves as the central processing unit of the host device, a display 2 with a keyboard and its input/output board 2a, an NC machining program memory 3, and three axes x, y, and z. The feed axis control circuit 4 and its interface 4a that control the feed speed and amount of the spindle, the spindle control circuit 5 and its interface 5a that control the rotation speed of the spindle, and determine the cycle machining position based on data in the NC machining program. A machining position determination section 6, an inlet data setting section 7 that sets machining operation data when the position is the entrance of a hole, and an exit that sets machining operation data when the position is the exit of the hole. section data setting section 8, and the cutting operation and return operation for both machining operations.

It is composed of an operation-specific speed setting unit 9 that determines the operation speed for each operation, such as a shift operation and a dwell operation, and a cycle data setting unit 10 and a cycle data memory 10a that set and store the determined data as cycle data. It's been done.

FIGS. 2 and 3 are flowcharts showing one example of the operating procedure of the above device. FIG. 2 shows the machining position determining section 6 in FIG. In an operation procedure corresponding to the entry section data setting section 7 and the operation-specific speed setting section 9, the machining position determination section 6 determines the machining position based on the escape amount and the per-time depth of cut, and 7 distributes required data to the cutting operation processing section 91a and return operation processing section 92a based on whether machining depth≧inlet cutting amount, and sets the respective speed setting sections 91.
b, 92b, the speed of the right column of the flow is set. FIG. 3 shows the operation procedure corresponding to the machining position determination section 6 output data setting section 8 and operation-specific speed setting section 9 in FIG. 1. The position determining unit 6 determines the machining position based on the relief amount and the per-cut depth of cut, and the exit section data setting section 8 determines the required data based on whether the machining depth≧the exit section cutting amount. is distributed to the cutting motion processing section 91a, return motion processing section 92a, shift motion processing section 93a, and dwell motion processing section 94a,
The speed settings for the right column of the flow are performed in each of the speed setting units 91b to 94b. The exit section speed setting differs greatly from the entrance section speed setting in that it involves shift operation processing and dwell operation processing.

The results of the speed setting at the exit section and the speed setting at the inlet section are compiled into cycle data as machining conditions by the cycle data setting section 10, and stored in the cycle data memory 10a.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to obtain the optimum machining conditions for fixed cycle machining with practicality and flexibility, and the machining operation in hole machining of a machine tool that improves machining accuracy and work efficiency. A configuration device can be provided.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of one embodiment of the present invention, Figs. 2 and 3 are flowcharts of the operating procedure of the embodiment, Fig. 4 is an explanatory diagram of hole drilling, and Fig. 5 is an explanatory diagram of a canned cycle. be. 1iCPU. 2; Display with keyboard 3; NC machining program memory, 4; Feed axis control circuit, 5; Spindle control circuit, 6: Machining position determination section, 7; Entrance section data setting section, 8; Exit section data setting section, 9; Speed setting section for each operation, lO: Cycle data setting section, 10a; Cycle data memory. Patent applicant Hitachi Seiki Co., Ltd. Fig. 4 (a) (b) ↑-

Claims (1)

[Claims] A machining operation setting device that sets the cycle operation in hole machining of a machine tool, which is activated by a cycle command and
A machining position determination section that determines the cycle machining position based on data in the machining program, an inlet data setting section that sets machining operation data when that position is at the entrance of a part, and an inlet data setting section that sets machining operation data when that position is at the exit of a hole. An exit part data setting section that sets machining operation data for a certain case, and an operation-specific speed setting that sets the operation speed for each of these machining operations by dividing them into cutting operation, return operation, shift operation, and dwell operation. A machining operation setting device for hole machining of a machine tool, characterized by comprising: