JPH02124247A - NC machine tool - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is based on NC (Numerical Control).
) The present invention relates to machine tools, and more specifically, relates to machine tools that are capable of performing various types of machining through manual switch operation, handle operation, data setting, etc. in addition to the original automatic machining function using an NC program.

(Prior Art and Problems to be Solved by the Invention) As is well known, in NC machine tools, various kinds of changes to the workpiece are performed using predetermined tools selected in the automatic tool change bag U (ATC) according to the NC program. Processing is done automatically. In this case, the NC program is created by a somewhat skilled programmer using a dedicated programming device.

In such NC machine tools, operation by one manual switch operation, etc., has conventionally been used only as an auxiliary step for setup before starting automatic operation.

However, in simple mold machining, etc., the same model is often machined only once, and even in such cases, creating an NC program requires a lot of effort such as securing a programmer, the labor involved in creating the program, and the time required. This has become a huge burden in terms of financial performance, and it is also unfavorable from a profitability standpoint.

The present invention was proposed to solve the above-mentioned problems, and its purpose is to enable various relatively simple operations such as manual switch operation, handle operation, data setting, etc. without creating an NC program. Our objective is to provide an NC machine tool that enables machining.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a switch for selecting the type of workpiece machining, such as linear machining or circular arc machining, and a switch for selecting the relative movement direction of the workpiece and the tool. and a manual operation unit capable of starting or stopping the processing, and data input means for inputting various data required depending on the type of processing.

Further, the manual operation section may include a manual pulse generator that selects the direction of movement and controls the speed of movement, for example, by operating a handle, similar to the switch. Furthermore, whether the movement direction is selected by the manual pulse generator or by the switch may be changed over by a separately provided changeover switch.

(Function) In the present invention, when performing linear machining of a workpiece, circular arc machining on an X-Y front surface, circular arc machining on an Enter the workpiece or tool feed speed, feed angle, machining range, etc. using . Thereafter, by specifying the movement direction of the workpiece or tool using the data input means and operating a switch, a predetermined machining of the workpiece is executed without creating an NC program.

In addition, by operating a handle provided on the manual operation section in place of the above switch, a manual pulse generator formed integrally with this handle is operated, and an output pulse corresponding to the rotation direction and rotation speed of the above handle is operated. is used to control the moving direction and speed of the workpiece or tool.

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

First, FIG. 1 shows a manual operation section 1 of an NC device provided in an NC machine tool according to an embodiment of the first invention. This NC machine tool is, for example, an NG milling machine, and in addition to automatic processing functions using conventional NC programs, it can perform linear processing of workpieces,
- Arc machining on the Y plane, arc machining on the x-y-z three-dimensional plane, etc. can be performed.

In FIG. 1, switches 2a, 2b, and 2c are illuminated switches that start or stop linear machining, circular arc machining on the X-Y plane, and circular arc machining on the X-Y-Z three-dimensional plane, respectively; 4 is an illuminated interrupt switch that generates a pulse when the switch is turned on to interrupt the machining process in order to make fine adjustments to the machining process or adjust the cutting angle to the workpiece. The figure shows a switch that changes the direction of movement between forward, backward, or stop.

Therefore, in order to operate the manual operation section 1 to perform, for example, straight line machining, the following procedure is followed.

First, switch the mode switch (not shown) provided on the NC device to "manual mode", move the tool to the workpiece processing position using a manual handle, etc., and position it, and then switch the mode switch to "automatic mode". Operation of the machine tool is started by pressing the illumination switch 2a corresponding to straight line machining (step Sl in FIG. 4).

Next, use the keyboard of the NC device to call up the machining type input screen 5 as shown in Figure 2, enter the number (1, Chokusen) corresponding to the desired type of machining, and enter data as shown in Figure 3. 1. Call up screen 6. Next, set the direction in which the workpiece or tool is to be linearly fed in terms of angle, and set the cutting feed rate in the data input area 61 of data input screen 6. Also, set the angle (Z angle) when tilting in the depth direction.

Furthermore, when specifying the movement range of the workpiece or tool, specify the specified input area for each axis direction.
A desired stroke is set in (S2).

The validity (correctness) of these setting data within a predetermined range is automatically determined, and if this is incorrect, an error message is output on the display (
Same S3).

Further, in arc machining on the X-Y plane, arc machining on the X-Y-Z three-dimensional plane, etc., it is necessary to also set the radius of the circular arc to be machined, the diameter of the tool, etc.

After performing the predetermined data settings in this way.

By operating the changeover switch 4, the workpiece or tool can be automatically fed forward or backward to process the workpiece, and the changeover switch 4 can also be used to stop or restart the movement. At this time, the NC device side determines whether the operation mode of the changeover switch 4 is forward or backward (S4), and performs machining by driving the workpiece or tool accordingly (S61.562). .

Also, if you press the illuminated interrupt switch 3 during processing (
S51.552), it is possible to fine-tune machining by slightly moving the tool with a manual handle, etc., or change the angle of cut to the workpiece, and it is also possible to perform the same machining of different parts based on the same setting data. It is possible. Note that once the forward or backward machining has been completed, the NC device determines whether or not to continue machining (S7), and if it continues, it returns to step S4 and performs the above-mentioned processing. be.

In addition, when finishing machining or when changing setting data and re-executing machining on another part, press the illumination switch 2a again to turn off the switch 2a and return to a state where machining can be completed or data can be changed. It becomes (31).

The above-mentioned series of processes include other X-Y plane arc machining, x-
The same applies to circular arc machining on a yz three-dimensional surface, and the same manual operation procedure can be used to process the workpiece.

Next, FIGS. 5 to 7 show an embodiment of the second invention. In this invention, the function of the changeover switch 4 in the first invention is realized by, for example, a manual pulse generator driven by a handle operation, and it is possible to select the relative movement direction of the workpiece and the tool and the movement speed thereof. The purpose is to improve workability and productivity by manually performing settings.

First, FIG. 5 shows an embodiment of the present invention.

In the figure, manual operation section 1 is used to place workpieces and seals in X and Y directions.
, handle 21° 22, 2 for moving in the Z-axis direction
3 is installed. Further, the manual operation section 1 is provided with a manual pulse generator 25 having a handle 24 for rotating a slit disk of a rotary encoder, for example.

The manual pulse generator 25 equipped with the handle 24 and the changeover switch 4 can be activated by operating a changeover switch 26 shown in FIG. and when the manual pulse generator 25 with the handle 24 is activated.

For example, by rotating the handle 24 to the right, the NC device advances the workpiece or tool in the direction of an appropriately selected axis from among the x, y, and z axes, and the handle 24
The workpiece or tool is moved backward by rotating the handle 24 in the left direction, and a pulse having a frequency proportional to the rotation speed of the handle 24 is outputted to control the moving speed, and the rotation of the handle 24 is stopped F:.

The above movement is stopped.

Note that the work or tool can also be moved forward or backward along each phase direction by turning the other handles 21, 22, and 23.

Next, FIG. 6 shows another embodiment of the present invention, in which the handles 27°, 28, 29
also serves as a component of the manual pulse generator, and when the changeover switch 30 is turned on, for example, the Y-axis handle 29 becomes effective, and by rotating this handle 29, forward or backward selection and movement speed control are performed. Go, handle 29
The movement is stopped by stopping the rotation.

In each of the embodiments described above, the feed may be overridden appropriately depending on the number of output pulses of the manual pulse generator, and furthermore, it is also possible to control the cutting feed rate.

Next, FIG. 7 is a flowchart showing processing when the cutting feed rate can also be controlled by driving the manual pulse generator.

In other words, in the figure, first it is determined whether there is an output pulse from the manual pulse generator (step 511), and if the handle is rotating, the direction of rotation is determined (step 512). . When rotating in the clockwise direction, a forward command for the work or tool is output (513), and when rotating in the left direction, a backward command is output (514).

Then 1 Manual pulse generator output pulse number (rotation speed)
is detected (515), a cutting feed rate command value (override amount) is output based on this (316), and it is determined whether or not all has been completed (517).

Note that the present invention is applicable not only to NC milling machines but also to various machine tools such as machining centers.

(Effect of the invention) As described above, according to the first invention, it is possible to easily operate the manual switch and input data without being aware that it is an NC machine tool or without programming the NC. Desired processing can be performed only by setting. Therefore, it is possible to reduce the labor and time required to create a program each time even simple machining is required.

In addition, a special programming device or the like is not required, reducing costs, and the NC machine tool can be easily used by a large number of unspecified people other than NG programmers.

Furthermore, according to the second invention, pulses are generated by a manual pulse generator provided separately or integrally with the handles corresponding to the x, y, and z axes to select the moving direction of the workpiece or tool and to stop the movement. Since it is possible to control the speed and speed of movement, it is possible to accurately process slopes and arcuate parts with the feeling of a conventional manual operation unit, improving the workability of mold processing, etc.
Productivity can be significantly improved.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the first invention, in which Figure 1 is an explanatory diagram of the manual operation section of the NG device, Figure 2 is an explanatory diagram of the processing type input screen, and Figure 3 is an explanatory diagram of the processing type input screen. is an explanatory diagram of a data input screen, FIG. 4 is a flowchart of processing by manual operation, and FIG. 5 is an explanatory diagram showing a main part of an embodiment of the second invention.
FIG. 6 is an explanatory diagram showing the main parts of another embodiment of the second invention;
FIG. 7 is a flowchart showing the operation of each embodiment. 1... Manual operation section 2a, 2b, 2c.
...Lighting switch 3...Interrupt switch 4.26.
30... Selector switch 5... Machining type input screen 6... Data input screen 61... Data input area 2
1-24, 27-29...Handle 25...Manual pulse generator Patent applicant Hamai Sangyo Co., Ltd. . tl) Unicorn 1st map

Claims (2)

[Claims] (1) A manual operation unit that is equipped with a switch for selecting the type of machining of the workpiece, such as linear machining or circular arc machining, and a switch for selecting the relative movement direction of the workpiece and tool, and that can start or stop the machining. , and data input means for inputting various data required according to the type of machining. (2) The NC machine tool according to claim 1, wherein the manual operation section includes a manual pulse generator that selects the relative moving direction of the workpiece and the tool and controls the moving speed thereof.