JPH07106466B2 - Processing condition adjustment device for laser processing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a laser control device that adjusts processing conditions by laser processing.

[Conventional technology]

FIG. 4 is a block diagram showing control of processing conditions of a conventional laser control device. In the figure, (1) is a register A for storing the processing conditions, (2) is a D / A converter, and (3) is It is a display unit.

Next, the operation will be described. The register A (1) stores processing conditions set by parameters or processing conditions instructed by a program, for example, laser output, processing speed, focus position and the like. D / A converter (2) is register A
The contents of (1) are converted into analog voltage and output as a processing condition command to, for example, a laser oscillator (not shown). or,
The display unit (3) displays the commanded machining conditions on the CRT screen.

[Problems to be Solved by the Invention]

Since the conventional laser control device is configured as described above, it is necessary to change the contents of the register A (1) in order to change the processing conditions. When instructing, the contents of the program must be changed, the operation is complicated and time consuming, and especially when it is desired to change the machining conditions by observing the machining state during machining, it is not possible to respond promptly. There was a problem.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a laser control device capable of easily and promptly adjusting the processing conditions set in the control device.

A processing condition adjusting device for a laser processing machine according to a first aspect of the present invention includes a rotary input shaft, the number of pulses proportional to the rotation angle of the rotary input shaft, which is given from the outside as an adjustment amount of the processing condition, and the rotary input. A manual pulse generator that outputs an identification signal that can identify the rotational direction of the shaft, a register means that sets and stores the adjustment unit amount of the machining condition per pulse of the pulse output by the manual pulse generator, and the rotation. The number of pulses output by the manual pulse generator and the identification signal corresponding to the input given to the input shaft, and the adjustment unit amount of the processing condition per one pulse of the manual pulse generator output stored in the register means. By using a calculation means for calculating the adjustment amount of the processing condition, and a correction means for correcting the initial processing condition preset by the adjustment amount.

A processing condition adjusting device for a laser processing machine according to a second aspect of the present invention uses the adjustment amount of the processing conditions in the first aspect of the invention as an override amount which represents a desired value as a percentage of the initial setting value with an initial setting value of 100%. The correction means is a multiplier.

A processing condition adjusting device for a laser processing machine according to a third aspect of the present invention is the laser processing machine according to the first aspect of the present invention, wherein the adjustment amount of the processing condition is an increase / decrease amount and the correction means is an adder.

[Work]

In the present invention, the manual pulse generator rotates in the desired direction and amount, and the adjustment amount of the processing condition is obtained according to the number of pulses generated by this, and the preset processing condition is corrected by this adjustment amount. It

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings. First, the case where the adjustment amount of the processing condition is the override amount will be described with reference to FIG. In the figure, (1) to (3) show the same parts as in the prior art. (4) is equipped with a rotary input shaft, and manually outputs a pulse number proportional to the rotation angle of the rotation input and an identification signal for identifying the rotation direction of the rotation input, which is externally given as the adjustment amount of the processing condition. Pulse generator,
(5) is a pulse counter that counts the number of pulses output from the manual pulse generator (4), and (6) is the desired ratio of machining conditions to the initial setting,% ratio (override amount) (set to 100%). The same value as the initial setting value) is set in the above manual pulse generator,
A register B for setting and storing the adjustment unit amount of the above processing conditions per pulse of the pulse output from the manual pulse generator,
(7) is a first multiplier which is a calculating means for multiplying the adjustment unit and the number of pulses, and (8) is a second multiplier as a correcting means.
, And performs multiplication of the multiplication result R _C and the initial processing condition C ₁ .

The manual pulse generator uses a rotary encoder, and as is well known, by rotating a rotating portion, A-phase signals AS and B which are 90 ° out of phase with each other as shown in FIG.
The phase signal BS is generated. The number of pulses of the A-phase signal AS and the B-phase signal BS is proportional to the rotation angle of the rotating part. In addition, during normal rotation, A
The phase of the phase signal AS leads the phase of the B phase signal BS, and during reverse rotation, the phase of the B phase signal BS leads the phase of the A phase signal AS. The pulse counter (5) counts the number of pulses from the output signal of the manual pulse generator (4) and outputs the number of pulses with positive and negative signs depending on the rotation direction. In the register B (6), the adjustment unit amount of override per pulse is set and stored in advance. The first multiplier (7) multiplies the adjustment unit amount stored in the register B (6) by the number of pulses (with a sign) of the output from the pulse counter (5). This value is the override adjustment amount. In addition, a register (not shown) that sets the initial value of the override
The above-mentioned override adjustment amount is added to the contents (normally 100%), and this value is output as the override amount Rc of the multiplication result. For example, if the initial override value is 100%,
The override adjustment amount by the manual pulse generator (4) is-
In the case of 20%, the overriding amount Rc is 100% −20% = 80%.

Next, the second multiplier (8) corrects the initial machining condition Ci by multiplying the initial machining condition Ci stored in the register A (1) by the override amount Rc to obtain the effective machining condition Ca.
Is output. The D / A converter (2) converts the effective processing condition Ca into an analog voltage and outputs it as a processing condition command to, for example, a laser oscillator (not shown). The display unit (3) also displays the effective machining conditions on the CRT screen.

Next, a case where the adjustment amount of the processing condition is an increase / decrease amount will be described with reference to FIG. In the figure, (1) to (5) are the same parts as in FIG. (9) is a register C for setting and storing the adjustment unit amount of the machining condition per pulse of the pulse output by the manual pulse generator when the increase / decrease amount of the machining condition is set in the manual pulse generator. Is a multiplier that is a calculation means for multiplying the adjustment unit and the number of pulses, and (11) is an adder as a correction means. The multiplication result Cd and the initial processing condition
Add Ci.

Next, the operation will be described, but the outline is the same as in FIG. In the register C (9), an increase / decrease amount of the machining condition per pulse, that is, an adjustment unit amount is set and stored in advance. For example, the laser output is 10 W per pulse. The multiplier (10) multiplies the adjustment unit amount stored in the register C (9) by the output pulse number (with a sign) of the pulse counter (5) to obtain the increase / decrease adjustment amount Cd. The adder (11) corrects the initial machining condition by adding the increase / decrease adjustment amount Cd to the initial machining condition Ci stored in the register A (1), and outputs the effective machining condition Ca. The subsequent operation is the same as in the case of FIG.

In the above embodiment, the effective processing condition Ca is output as an analog voltage by the D / A converter (2), but it may be output to the next stage as digital data depending on the processing condition.

Here, the processing conditions refer to all the conditions that can be controlled by the control device among the factors that affect the laser processing phenomenon, and include laser output, pulse frequency, duty, processing speed, focus position, processing gas pressure, etc. is there.

Further, the multiplier and the adder may be H / W or S / W.

〔The invention's effect〕

As described above, according to the present invention, the adjustment amount of the processing condition is calculated based on the adjustment unit amount of the processing condition per pulse, the output pulse number of the manual pulse generator, and the rotation direction of the rotating portion to perform the initial processing. Since the conditions are modified, there is an effect that the processing conditions can be adjusted quickly and easily.

[Brief description of drawings]

FIG. 1 is a block diagram showing control of processing conditions of a laser controller according to an embodiment of the present invention, and FIG. 2 is a block diagram showing control of processing conditions according to another embodiment of the present invention.
FIG. 4 is a waveform diagram showing an output signal of a manual pulse generator, and FIG. 4 is a block diagram showing control of processing conditions of a conventional laser control device. In the figure, (4) is a manual pulse generator, (6) is a register B, (7) is a first multiplier, (8) is a second admirer, (9) is a register C, and (10). Is a multiplier and (11) is an adder. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (3)

[Claims] 1. A number of pulses, which is provided as an adjustment amount of machining conditions and is proportional to a rotation angle of the rotary input shaft, and an identification signal capable of identifying the rotation direction of the rotary input shaft. And a register means for setting and storing the adjustment unit amount of the above-mentioned machining condition per pulse of the pulse output by this manual pulse generator,
The number of pulses output by the manual pulse generator and the identification signal corresponding to the input given to the rotary input shaft, and the manual pulse generator output 1 stored in the register means.
It has a calculating means for calculating the adjustment amount of the processing condition using the adjustment unit amount of the processing condition per pulse, and a correction means for correcting the initial processing condition preset by the adjustment amount. A processing condition adjusting device for a laser processing machine. 2. The processing condition adjustment amount is 100% of the initial setting value.
2. The processing condition adjusting apparatus for a laser processing machine according to claim 1, wherein the correction value is an overriding amount that represents a desired value as a percentage of the initial setting value. 3. The processing condition adjusting device for a laser processing machine according to claim 1, wherein the adjustment amount of the processing condition is an increase / decrease amount, and the correction means is an adder.