JPH0545403B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in a tenon removal machine.

[Background of the invention]

When joining two pieces of wood, a tenon is formed at the end of one piece of wood, and a mortise is formed at the end of the other piece of wood.

Normally, the structure of a tenon machine includes a vertical saw blade and a horizontal saw blade for cutting the workpiece, an elevating member that moves up and down via a column set up on a base, and a workpiece. It is equipped with a vice that allows the slider to move back and forth while clamping the material.

When tenoning a workpiece, clamp the workpiece with the slider part of the vise (specifically, a pair of left and right clampers mounted on the slider), and then obtain the required tenon length. The slider is moved in the front-back direction until it reaches the position where the slider is moved, but conventionally, the slider movement operation has been performed manually.

Therefore, when aligning the ink line indicating the cutting position marked on the surface (top surface) of the workpiece with the cutting edge of the saw blade, the work is time consuming, which not only greatly impairs work efficiency, but also makes it difficult to be accurate. However, if a setting error occurs, re-cutting is required or the workpiece is wasted.

[Purpose of the invention]

The present invention eliminates the above-mentioned drawbacks of the prior art,
To quickly and accurately perform ink line alignment.

[Summary of the invention]

The present invention provides a tenon removal machine in which an elevating member moves up and down using a column installed upright on a base as a guide, and a rider of a vise provided on the base moves in the cutting direction. A reversible electric motor is provided, and both the base member of the vise and the slider are provided with slider initial set position detection means for detecting the initial set position of the slider and slider movement amount detection means for detecting the amount of movement of the slider. The feature is that the slider automatically moves according to the dimension specified from the material cutting length input section.

Furthermore, the elevating member is driven up and down by a reversible electric motor, and both the elevating member and the elevating member supporting side include:
Upper and lower limit detection means for the lifting member is provided, and the workpiece cutting length input section counts the length that can be cut with one saw blade and calculates the number of reciprocations of the lifting member based on this count value. A means for setting the number of cuttings to be determined is provided.

[Embodiments of the invention]

An embodiment of the present invention will be described using FIGS. 1 to 6.

Figure 1 is a front view of the tenon removal machine, Figure 2 is a view of the workpiece cutting length input section as seen from arrow A in Figure 1, and Figure 3 is an enlarged cross section taken along line B-B in Figure 1. 4 is an enlarged view of section C in FIG. 3, FIG. 5 is a view taken from arrow D in FIG. 4, and FIG. 6 is a block diagram.

In the figure, 1 is a base, and two columns 2, 2 are suspended in parallel on one side of the upper surface of the base 1, and a bridge 3 spanning the upper ends of the columns 2, 2 connects the columns 2, 2. is supported. An elevating member 4 is arranged on the columns 2, 2.
The elevating member 4 is screwed into a guide screw 8 that transmits the power of a reversible electric motor 5 for moving the elevating member, and is driven upward and downward by the power of the reversible electric motor 5.
The elevating member 4 is equipped with vertical saw blades 6, 6 and horizontal saw blades 7, 7 which are rotationally driven by a saw blade driving electric motor (indicated by reference numeral 9 in FIG. 6). has been done.

An upper limit position detection switch 10 is attached to the bridge 3, and an upper limit position detection lever 11 is attached to one side of the upper end of the elevating member 4 so as to face the upper limit position detection switch 10. Since the lever 11 comes into contact with the switch 10, the upper limit position of the elevating member 4 is always kept constant.

A lower limit position detection switch 12 is attached to the base 1, and a lower limit position detection lever 13 is attached to one side of the lower end of the elevating member 4. Lever 13
By contacting the switch 12, the lower limit position of the elevating member 4 is always kept constant. In addition, the upper limit position detection switch 10 and the upper limit position detection lever 1
1. The lower limit position detection switch 12 and the lower limit position detection lever 13 constitute upper and lower limit detection means.

14 indicates a handle for adjusting saw blade spacing, and the spacing between vertical saw blades 6 and 6 and between horizontal saw blades 7 and 7 is as follows.
Adjustment is made by rotating the handle 14.

On the other side of columns 2, 2 on base 1,
A base member 16 of the vise 15 is attached, and slide guide rods 18,1 are attached to the base member 16.
8 is attached. A slider 17 is provided above the base member 16 and is movable by being guided by slide guide rods 18, 18. A pair of left and right clampers 19 for clamping a workpiece is provided on the slider 17, and the interval between the clampers 19 is adjusted by a handle 20.

In FIG. 3, the base member 16 includes a reversible motor 21 and a reversible motor 21 for moving the slider.
Slider guide screw 2 that transmits the power of
2, and the slider guide screw 22 is screw-fitted to the bottom protrusion of the slider 17, so that the slider 17 can reciprocate linearly in the direction of arrow E by the power of the reversible motor 21.

A set position detection switch 27 for keeping the initial set position of the slider 17 constant is attached to the base member 16, and a set position detection lever 28 is attached to the slider 17. A set position detection means is constructed.
When the lever 28 comes into contact with the switch 27, the slider 17 always moves from a predetermined position to the workpiece cutting length input section 29 attached to the elevating member 4.
Move by the tenon length specified by .

In FIG. 2, the workpiece cutting length input section 29
The machine is composed of a keyboard 30 for inputting the tenon length, a light emitting diode 31 for displaying the tenon length, and a clear switch 36.

In FIG. 5, an encoder 23 is attached to the slider guide screw 22, and a number of grooves for counting the amount of movement of the slider 17 are formed on the outer periphery of the encoder 23. The detectors 24 and 25 for detecting the grooves of the encoder 23 are constructed so that one of them outputs symbols (symbol a in FIG. 6) having a phase difference of 90°. Note that the encoder 23 and the detectors 24 and 25 constitute slider movement amount detection means.

Next, the control circuit of the present invention will be explained using FIG. 6.

The detectors 24 and 25 determine whether the slider 17 is moving forward or backward through the forward/reverse determining circuit 26 by outputting symbols with a 90° phase difference, and move the reversible motor 21 in a predetermined direction. Rotate. The arithmetic circuit 33 receives signals from the detectors 24 and 25 that detect the number of grooves on the encoder 23, counts the amount of movement of the slider 17, and calculates the count value and the numerical value input from the keyboard 30 (necessary for the workpiece material). The output of the reversible motor 21 for moving the slider is controlled by the output signal from the arithmetic circuit 33. 34 is an arithmetic circuit that counts the length that can be cut with one saw blade; 35 is an arithmetic circuit that determines the number of reciprocations of the elevating member 4 based on the count value of the arithmetic circuit 34; Therefore, a cutting number determining means 32 is configured.

In the above configuration, first, the workpiece is placed in the vise 1.
5, and the tip of the workpiece on the mortise side.
Adjust the handle 20 to the position of the mark (not shown) corresponding to the position of the slider initial set position detection means.
Rotate and tighten with clamper 19.

Next, by operating the keyboard 30 of the workpiece cutting length input section 29, the tenon length required for the workpiece is stored in the memory. When the drive switch of the slider moving reversible motor 21 is turned on, the slider 17 begins to move from the initial set position. When the slider 17 begins to move, the detectors 24 and 25 count the number of grooves on the encoder 23, and the output signal (a signal) is sent to the arithmetic circuit 33 via the forward/reverse discrimination circuit 26, and is input from the keyboard 30. The reversible electric motor 21 for moving the slider is driven based on the output signal, and the electric motor 21 selects the position input into the memory according to a command from the workpiece cutting length input section 29. It stops at the tenon length position required for the workpiece, and the slider 17 that clamps the workpiece is moved to a predetermined position.

Thereafter, the elevating member 4 descends to perform a predetermined cutting, and when the lower limit position detection lever 13 of the elevating member 4 comes into contact with the lower limit detection switch 12 of the base 1, the elevating member 4 starts returning, and the elevating member 4 When the upper limit position detection lever 11 of the bridge 3 comes into contact with the upper limit position detection switch 10 of the bridge 3, the elevating member 4 stops,
Return to initial state.

In addition, if the length of the tenon required for the workpiece is long,
In the case of so-called long tenon processing, saw blade 1
Arithmetic circuit 34 that counts the length that can be cut in one turn
Based on the count value of the calculation circuit 34, the calculation circuit 35 sets the number of reciprocations of the elevating member 4, and the elevating member 4 automatically reciprocates according to the determined number of times. Continuous work with excellent workability is possible even when the situation is severe.

For example, as shown in FIG.
The input value (tenon length required for the workpiece) is 120 mm, one pulse from detectors 24 and 25 is 1 mm, and the tenon length that can be cut with one saw blade is 50 mm.
If the length is set to mm, it is sufficient to cut the length 50 mm twice, and then cut the remaining 20 mm the third time.

When the lowering of the tenon removal is completed, operate the clear switch 36 to erase the values previously stored in the memory, and then reverse the slider moving reversible motor 21 to detect the set position of the slider 17. The lever 28 comes into contact with the set position detection switch 27 of the base member 16, and the slider 17 stops at the initial set position.

〔Effect of the invention〕

According to the present invention, by inputting the numerical value of the tenon length to be processed into the workpiece, the slider of the vise automatically moves to the position of the set value, so there is no need to re-cut or waste the workpiece due to setting errors. The ink lines can be aligned accurately and quickly without having to do anything, and work efficiency can be greatly improved.

In addition, the length that can be cut with one saw blade is counted, and the number of reciprocations of the lifting member is set based on the count value, so it can be used for long tenon machining that cannot be done with one cutting. However, just by inputting the tenon length, the slider will automatically move to perform tenon processing.

[Brief explanation of the drawing]

Fig. 1 is a front view of the tenon removal machine, Fig. 2 is a view of the workpiece cutting length input section as seen from arrow A in Fig. 1, and Fig. 3 is an enlarged sectional view taken along line B-B in Fig. 1. 4 is an enlarged view of section C in FIG. 3, FIG. 5 is a view taken from arrow D in FIG. 4, and FIG. 6 is a block diagram. In the figure, 15 is a vice, 16 is a base member, 17 is a slider, 21 is a reversible motor for moving the slider, 23 is an encoder, 24 and 25 are detectors, 26 is a forward/reverse discrimination circuit, 27 is a set position detection switch, and 28 is the set position detection lever, 29
is the workpiece material cutting length input section, 30 is the keyboard,
31 is a light emitting diode, 32 is a cutting number determining means, 33 to 35 are arithmetic circuits, and 36 is a clear switch.

Claims (1)

[Scope of Claims] 1. In a tenoning machine in which an elevating member moves up and down using a column erected on a base as a guide, and a slider of a vise provided on the base moves in the cutting direction, the base member of the vise A reversible electric motor is provided for moving the slider, and both the base member of the vise and the slider are provided with slider initial set position detection means for detecting the initial set position of the slider and slider movement amount detection means for detecting the amount of movement of the slider. , a tenoning machine characterized in that a slider automatically moves according to a dimension instructed from a workpiece cutting length input section. 2 driving the lifting member up and down with a reversible electric motor;
Both the lifting member and the lifting member support side are provided with upper and lower limit detection means for the lifting member, and the workpiece cutting length input section counts the length that can be cut with one saw blade. 2. The tenon removal machine according to claim 1, further comprising cutting number setting means for determining the number of reciprocations of the elevating member based on the count value.