JPS6257481B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates in particular to a division size display in an automatic lifting planer. Conventionally, as shown in FIG. 1, the partial dimension display was performed by pressing the reset switch 5 while the table 1 was moved to the fixed position by operating the handle 2 or driving the motor 3 to activate the limit switch 4.
A counter that counts pulses from the rotary encoder 8 via the pinion 7 was reset, and the display on the display 9 was set to the reference position.

However, with this method, an error occurs in setting the reference position due to a shift in the stop position due to the inertia of the table 1, and it is not possible to calibrate the displayed value by using the scale bar 10 or trial cutting. There were drawbacks such as the need to move the device to the reference position.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art by providing an automatic lifting/lowering planer that can easily and accurately set the table at a position corresponding to the parting size.

Next, the configuration of the first embodiment of the present invention will be explained with reference to FIGS. 2 to 5.

In FIG. 2, the lifting shaft 11 driven by the motor M1
An automatic machine that cuts the surface of the workpiece 13 with a planer blade 15 driven by a motor M2 (shown in FIG. 3) while feeding the workpiece 13 on a table 12 that moves up and down via a feed roller 14 driven by a motor (not shown). A rotary encoder 18 for detecting the table position that generates a number of pulses corresponding to the amount of movement of the table 12 is mounted on the frame 17 of the plane board 16.
9. It is attached so that it can interlock with the table 12 via a pinion 20, and as shown in FIG. The workpiece 13 is brought into contact with the cutter blade 15 from the lowest position.
a rotary encoder 22 for detecting depth of cut that generates an output corresponding to the depth of cut d up to the top surface position;
In this case, a rotary encoder 22 with zero detection is installed to detect zero in the d=0 state where the lowermost position of the cutter blade 15 and the tip position of the detection rod 21 match, and a rotary encoder 22 with zero detection is installed on the surface of the automatic plane board 16. A portion size display 23 that displays the output from the rotary encoder 18 for detection, and a depth of cut display 24 that displays the output from the rotary encoder 22 for depth of cut detection are each attached.

Next, FIGS. 3 to 5 are electrical circuit diagrams of this embodiment, in which the AC current through the main switch _SW1 ,
The power supply AC has safety raising and lowering by operating the raising foot switch SW ₂ and the lowering foot switch SW ₃ .
Direct/reverse operation is performed by turning on/off the forward/reverse switching relays X ₁ to _{X 3} via the lower limit switches LS ₁ and LS ₂ and the short-circuit prevention delay circuit TL, and all relays X ₁ to When X ₃ is turned off, armature A is short-circuited in the braking direction via fields F ₁ and F _2. Series lifting motor M ₁ with electric brake.
and a motor _M2 for driving the planer blade 15 whose operation is controlled by turning on and off a processing switch _SW4 , and a soft start control circuit 25, in this case, a soft start control circuit 25, in this case, is connected to the lifting motor _M1 . As shown in Figure 4, the anode voltage of the programmable union transistor PUT is connected to the capacitor C ₁ ,
A triac TRI is connected, which is controlled via a soft start control circuit 25, which gradually increases the conduction angle triggered by the pulse transformer PT by controlling it in accordance with the charging and discharging characteristics of _C2 . In addition, the up and down pulses from the rotary encoder 18 for detecting the table position and the calibration up and down pulses provided in the component circuit CPC shown in FIG.・Down count switches
The pulses from the pulse generator 26 activated by turning on SW ₅ and SW ₆ are OR circuits OR _{1 and 2} , respectively.
It is input to the up/down counter 27 of the display control circuit DCC via OR ₂ , and the up/down counter 27 of the display control circuit DCC is inputted.
The output from the down counter 27 is converted via a decoder 28 into a dividing dimension that changes depending on the amount of movement of the corresponding table 12, and is input and displayed on the dividing dimension display 23 via a driver circuit 29. In addition, rotary encoder 2 for detecting depth of cut
The positive and reverse pulse outputs from the up/down counter 30 are input to the up/down counter 30, and the output from the up/down counter 30 is sent via a decoder 31 to the cutting depth, which changes depending on the amount of movement of the corresponding detection rod 21. The driver circuit 32 in the converted state
The cutting depth is input and displayed on the cutting depth display 24 via the cutting depth indicator 24.

In addition, in the figure, R is a resistor, VR is a variable resistor, C is a capacitor, D is a diode, ZD is a Zener diode, OR is an OR circuit, AND is an AND circuit,
NAND indicates a NAND circuit, and for the same circuit elements, a serial number is attached after each element code, and the normally open contacts of each relay X ₁ to X ₃ are indicated by a after each relay code.
For normally closed contacts, b is added after each relay symbol.

Next, the operation of this embodiment will be explained.

The counters ₂₇ ,
30, in the reset state, the workpiece 13 for trial cutting is placed on the table 12 and the lifting foot switch SW ₂ is turned on, causing the table 12 to rise through normal rotation of the motor _M1 , and the workpiece 13 is placed at the tip of the detection rod 21. When the tip of the detection rod 21 reaches the lowest position of the cutter blade 15, the output of the counter 30 becomes zero due to zero detection. When the count value, that is, the depth of cut d, is accurately displayed, and when the displayed value reaches the specified depth of cut d, the lifting foot switch SW ₂ is turned off, and the motor _M1 is turned off at this point. At the same time, in this stopped state, the portioning dimension display 23 shows the amount of movement of the table 12 when the raising foot switch SW ₂ , which has no relation to the portioning dimension, is turned on, is indicated by the OR circuit OR ₁ from the rotary encoder 18. Displayed by count. This display is shown in Table 12
This may include errors due to inertia, etc. of the calibration up/down count switches.
Calibration can be performed by manual operation of SW5 and SW6.

That is, next, at the table 12 stop position, the machining switch _SW4 is turned on to cut the workpiece 13, and the calibration up or down count switch SW5 or down is turned on in accordance with the finished dimensions of the workpiece 13 measured after cutting. When SW ₆ is turned on manually, the pulses from the pulse generator 26 are applied to the up/down counter 3 during this on time.
0 is input, the display on the display 23 changes, and then when this display value reaches the finished dimension, turn off switch SW ₅ or SW ₆ , and in this state, the exact cut-off dimension will be displayed on the display. 23, and in this state, when the raising or lowering foot switch SW ₂ or SW ₃ is turned on, the motor M ₁ will soft start, so the motor M ₁ should be operated in an inching manner near the preset dimension. This allows the table 12 to be accurately stopped at a predetermined position.

Next, FIGS. 6 and 7 are electric circuit diagrams and operation diagrams of a second embodiment of the present invention, in which an up-down counter for calibration is used instead of the pulse generator 26 of the first embodiment. Each time each switch SW ₅ , SW ₆ is turned on, a single pulse corresponding to the calibration of, for example, 0.1 mm is output from the single pulse generation circuit 34 via the OR circuit OR ₄ , and the delay circuit 3 after the single pulse is generated.
5, the pulse generator 36
A pulse interval _{automatic conversion} pulse generator ₃₇ that continuously outputs pulses from , the configuration, operation, and effects are almost the same as those of the first embodiment.

Next, the effects of the present invention will be explained.

The first invention is an automatic plane machine in which parting dimensions are determined by the vertical movement of a table driven by a motor, and the workpiece placed on the table is cut by a motor-driven plane blade while being fed by a feed roller. a rotary encoder for detecting the table position that generates pulses corresponding to the amount of vertical movement of the table; and the pulses from the rotary encoder are counted by a counter and then converted to the amount of movement of the table via a decoder, which is displayed on a portion size display. The automatic lifting plane board is provided with a display control circuit for displaying a display and a calibration circuit for arbitrarily changing the count of the counter by manual operation.

As a result, the present invention enables manual operation to calibrate the display of the scale bar and the fractional dimension display after trial cutting, and eliminates the reference position setting error caused by the inertia of the table as in the conventional method. By being able to do so, the table can be accurately and easily positioned in accordance with the portioning size, and furthermore, there are effects such as the portioning size is not affected by the amount of protrusion of the cutter blade.

Next, the second invention is an automatic plane machine in which the portion size is determined by the vertical movement of a table driven by a motor, and the workpiece placed on the table is cut by a motor-driven plane blade while being fed by a feed roller. , a rotary encoder for detecting the table position that generates pulses corresponding to the amount of vertical movement of the table, and a portion size display that counts the pulses from the rotary encoder and converts them into the amount of movement of the table via a decoder. a display control circuit for displaying a display on the counter; a calibration circuit for arbitrarily changing the count of the counter by manual operation;
Depth of cut at which the detection rod contacts the top surface of the workpiece at the start of cutting with the workpiece placed on the table and generates an output corresponding to the depth of cut from the lowest position of the cutter blade to the top surface of the workpiece. The automatic lifting planer is equipped with a depth of cut detection device that converts the output from a detection rotary encoder into depth of cut and displays it on a depth of cut indicator.

As a result, the present invention has the advantage of being able to accurately and easily detect the depth of cut while maintaining the effect of the first invention, thereby facilitating the cutting work of the processed material with an automatic planer. There is.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a conventional embodiment, FIG. 2 is a schematic front view of a first embodiment of the present invention, and FIGS.
6 is an electric circuit diagram of the second embodiment of the present invention, and FIG. 7 is an operation diagram thereof. The operating characteristics a to e in FIG. The operating characteristics of each point with the same sign in are shown. 11... Lifting axis, 12... Table, 13...
Processed material, 14...Feed roller, 15...Planer blade, 16...Automatic planer board, 18, 22...Rotary encoder, 19...Rack, 20...Pinion, 21...Detection rod, 23, 24... ...Display device, 26...Pulse generator, 27, 30...Up/down counter, 28, 31...Decoder,
29, 32...Driver circuit, 33...Automatic lifting plane board, SW ₂ , SW ₃ ...Foot switch, SW ₄
...Processing switch, SW ₅ ...Up count switch, SW ₆ ...Down count switch, M ₁ ,
M ₂ ... Motor, OR ₁ ~ OR ₃ ... OR circuit,
AND ₁ , AND ₂ ...AND circuit, CPC...calibration circuit, DCC...display control circuit.

Claims (1)

[Scope of Claims] 1. In an automatic planer machine in which the divided dimensions are determined by the vertical movement of a table driven by a motor, and the workpiece placed on the table is cut by a motor-driven planer blade while being fed by a feed roller, A rotary encoder for detecting the table position that generates pulses corresponding to the amount of vertical movement of the table, and a division dimension display that counts the pulses from the rotary encoder with a counter and converts them into the amount of movement of the table via a decoder. 1. An automatic lifting planer comprising: a display control circuit for displaying a display on the counter; and a calibration circuit for arbitrarily changing the count of the counter by manual operation. 2. The automatic lifting plane board according to claim 1, wherein the table vertical drive motor is controlled by soft start control. 3. The calibration circuit inputs pulses from a pulse generator activated by turning on a manually operated addition and subtraction switch to the counter for addition and subtraction. 2. The automatic lifting plane board according to any of 2. 4. The calibration circuit according to claim 3, wherein the calibration circuit lengthens the pulse interval input from the pulse generator to the counter for a certain period of time after the addition and subtraction switches are turned on. Automatic lifting planer. 5. In an automatic plane machine, in which the portion size is determined by the vertical movement of a table driven by a motor, and the workpiece placed on the table is cut by a motor-driven plane blade while being fed by a feed roller, the vertical movement of the table is A rotary encoder for detecting the table position that generates corresponding pulses, and a display control circuit that counts the pulses from the rotary encoder with a counter and then converts the pulses into the movement amount of the table via a decoder and displays the amount on the division dimension display. and a calibration circuit that arbitrarily changes the count number of the counter by manual operation, and a detection rod that contacts the top surface of the workpiece when starting cutting with the workpiece placed on the table, and detects the cutter from the lowest position of the cutter blade. The output from the rotary encoder for detecting depth of cut, which generates an output corresponding to the depth of cut up to the top surface of the workpiece, is exchanged with the depth of cut, and the depth of cut is displayed on the depth of cut indicator. An automatic lifting plane board characterized by being equipped with a detection device.