JPH06226707A - Cutting covering device of tenoning machine - Google Patents

Abstract

PURPOSE:To property tenon under the state that a cover is put in a standstill on the top surface of working timber at all times irrespective of the dimensions of the working timber, the vertical and lateral motions of a main spindle head and the like. CONSTITUTION:To the vertical guide rails 3 of a column 2, a vertically moving body 4, to which a mounting base 8 for shifting a lateral guide rail 7 is equipped, is shiftably arranged. On the mounting base 8, a main spindle head 9 equipped with a working cutter S is provided. Further, on the vertically moving body 4, which does not shift laterally, a cover 15 for covering the working cutter S is vertically movably provided. The vertical moving action of the cover 15 is controlled by the top surface of the working timer W locating below the cover and the vertically moving body 4.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tenon remover for mortising a structural material for wooden construction, and more particularly to a cutting cover device for smoothly performing a cutting process. . [0002] In recent years, the processing of joints in wooden construction has been mechanized for the purpose of compensating for the shortage of skilled workers, or for the purpose of improving the structural strength and fitting accuracy. An example of a tenon (joint, joint) forming this joint is as shown in FIGS. 4 and 5, and the female tenon M and the male tenon N forming a pair have a depth dimension with the upper surface of the processed material W as a reference. Is determined, and the cutting process is performed according to this. Conventionally, as a processing machine of this kind, the utility model sho 58
There are those disclosed in -20323. This processing machine uses the reference surface for mortise processing as the lower surface side of the processed material, moves the blade upward from this lower side, and performs cutting work by raising and lowering movement or a combination of raising and lowering movement and arc movement. is there. This bottom surface reference system is not concerned with the size (height) of the processed material at all and can always make the cutting position constant according to the table height, and in managing the tenon size. , Is a very big advantage. However, in the case of the above method, the black line marking the cutting position is hidden below and the work becomes very troublesome. Further, since the cover body cannot be provided directly above the cutting tool for processing, there is a problem in structure such that the entire cover is required. In order to solve this conventional problem, it is sufficient to use the upper surface side of the processed material as a reference surface and cut the processing blade downward. However, in the above-mentioned method, the reference surface varies each time depending on the size of the work material, and since the working blade moves not only in the simple vertical movement but also in the lateral direction, the cutting portion is well covered. In order to do so, it is necessary to develop a dedicated cutting cover device suitable for this. The present invention has been made on the basis of the above technical requirements, and has the following structure in order to solve the problems. In the cutting cover device according to the present invention, a column is established at the rear side of the vise means, and an elevating body which is vertically controlled by a longitudinal drive motor for the column, and an elevating body, and a lateral drive. A mounting base that is laterally controlled by a motor is provided, and a spindle head having a machining cutter is provided on the mounting base, and an elevating guide is provided on the column or the elevating body side. A gist is that a cover body having a lower end corresponding to the upper surface of the processed material is provided, and the lifting operation of the cover body is restricted by the elevating body and the processed material. The processing cutter and the cover body are separated into separate systems in the vertical direction. Therefore, when the cutter cuts into the work material, the cover body comes into contact with the upper surface of the work material and stops. Although the cover body stops at this position, the cutter continues the descending motion without being restricted by this, and the cutting process can be performed without any trouble. Further, the processing cutter and the cover body are separated in the lateral direction. Therefore, when the cutter laterally moves, the cover body does not move from the stop position. Therefore, the tenon cutting process can be performed by setting the cover body at a fixed position from beginning to end. Embodiments of the cutting cover device according to the present invention will be specifically described below. Fig. 1 is a front view of a mortise grinder equipped with this device. Fig. 2 is also a partially longitudinal side view. 1 is a frame 2 is a column established on the rear side of the frame 1 3 is a vertical direction provided on the column 2 The vertical guide rail 4 (in the Z-axis direction) is an elevating / lowering body that is vertically engaged with the vertical guide rail 3. The vertical guide rail M1 is a vertical drive motor such as a servo motor attached downward to the upper end of the column 2. 5 is a feed screw shaft mounted in the output shaft of the drive motor M1 in the ascending / descending direction. 6 is a passive nut 7 of the ascending / descending body 4 screwed onto the feed screw shaft 5. The horizontal guide rail 8 (in the X-axis direction) is a mounting base 9 movably engaged with the horizontal guide rail 7, a spindle head 10 such as a high-frequency motor provided on the mounting base 8 is a spindle of the spindle head 9, and is used for raising and lowering as described above. Also, it is provided so as to project forward in the front-rear direction orthogonal to the left-right direction. S is a machining cutter M2 attached to the front end of the spindle 10 via a chuck 11, a lateral drive motor 12 such as a servomotor laterally attached to one end of the elevating body 4, and an output of the drive motor M2. The left and right feed screw shafts 13 attached to the shafts are screwed onto the feed screw shafts 12 and the passive nuts 14 on the side of the mounting base 8 are the lifting body 4 described above.
The lifting guide 15 established on the upper part of the
4 is a cover body of the processing cutter S that is vertically engaged with the work piece 4, and is always hung at the lower end position of the lift guide 14 due to its weight. Reference numeral 16 denotes a dust collecting port 17 provided on the upper end of the cover body 15. Reference numeral 18 is a transparent plate provided on the front side of the cover body 15 and a viewing window 18 is provided on the mounting base 8 below the processing cutter S. The positioning contact piece 19 for the workpiece W is a table 20 provided on the front side of the frame 1 and the table 20 is a table 19
The front and rear feed conveyors 21 are a pair of clamp pieces 2 arranged on both sides of the feed conveyor 20.
Centripetal vice means 2 and 22 is vice means 2
This is the first operation handle. Numerals 24 and 24 are vice means which are arranged orthogonally to the above-mentioned feeding conveyor 20 and the feeding conveyor 25 in the left-right direction is constituted by a fixed clamp piece 26 and a movable clamp piece 27. In the above configuration,
When the work piece W is regulated by the positioning abutment piece 18 and the work piece W is fed onto the infeed conveyor 20, the work piece W
The processing cutter S and the lower end of the cover body 15 correspond to the upper surface side of the. SW is a processing cutter S for the processed material W.
Of the mounting stay 2 by the detection means for detecting the cut reference position of
Limit switch 2 attached to the lifting body 4 side via 8
9 and the contact 30 on the cover body 15 side.
This detecting means SW is
When the lower end of the cover body 15 comes into contact with the upper surface of the processed material W and stops, and when the elevating body 4 is lowered by a predetermined dimension with respect to the cover body 15 by the subsequent operation, a detection signal is output.
(See FIG. 3) The above-mentioned predetermined dimension is set to the difference between the lower end of the cover body 15 and the center height of the processing cutter S in FIG. It is detected that the center of the processing cutter S coincides with the position. Then, with this detection position as a base point, the tenon depth dimension h is set as shown in FIGS. In order to perform the female tenon processing of FIG. 4 by the above-mentioned tenon remover, the following is done. The machining cutter S of the spindle head 9 is in the standby state and is located at the machine origin as shown in FIG. This origin position coincides with the center position of the workpiece W above the centers of the clamp pieces 22, 22 of the centripetal vice means 21. First, the processed material W is supplied onto the feeding conveyor 20, the end portion thereof is regulated by the positioning contact piece 18, and then clamped by the clamp pieces 22, 22. When the setting of the processing material W is completed in this way, the processing cutter S is rotated and a required processing program is called from a control device (not shown) and executed to control the drive motors M1 and M2. To give a pattern motion suitable for the object to be processed. In this female tenon processing, feed control as shown in FIG. 6 is given. That is, when the vertical drive motor M1 is used to feed downward from the origin a, the cover body 15 moves downward together with the processing cutter S. Along with the movement, the cover body 15 comes into contact with the upper surface of the processed material W and stops, and when the processing cutter S further descends to reach point b, a detection signal is output. Then, with this as the base point, the drive motor M1 starts the program operation. In the case of this female tenon processing, a linear command is given up to point d. And in this process,
The workpiece W is cut to a predetermined depth h. When the processing is completed, the processing cutter S is controlled to move upward from the point d toward the origin a, and the processing is completed. Next, the male tenon processing of FIG. 5 will be described.
In this case, the processed material W has the same size as described above, and the setting is performed in the same manner. In this male tenon processing, a pattern motion as shown in FIG. 7 is given. That is, it is fast-forwarded from the origin a through the point b to the base point position of the point c. At point c, a detection signal is output and the program operation of the drive motors M1 and M2 starts. This program operation is given by a straight line cd, a circular arc d-e, and a straight line e-f. In this process, the workpiece W is subjected to the required cutting work. Then, the point f is returned to the origin a via the point g, and the processing is completed. During the above-described processing, since the vertical movement of the spindle head 9 with respect to the cover body 15 is performed by the vertical guide 14, and the horizontal movement is performed by the lateral guide rail 7, the cover body 15 is first abutted. The state in which the material W is stopped at a fixed position on the upper surface is set. As described above, according to the cutting cover device of the present invention, even when the spindle head moves up and down, right and left, or when the cutting reference surface changes depending on the size of the work material, Regardless of the above, it has an excellent effect that it can always stop at a fixed position on the upper surface of the processed material to exert a reliable cover action.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a mortise grinder equipped with a cutting cover device according to the present invention. FIG. 2 is a partially longitudinal side view of the same. FIG. 3 is an explanatory diagram showing an operating state of the cutting cover device. FIG. 4 is a perspective view showing the shape of a processed female tenon. FIG. 5 is a perspective view showing the shape of a male tenon. FIG. 6 is an explanatory diagram showing a pattern operation of mortise processing. FIG. 7 is likewise an explanatory diagram. [Explanation of Codes] 2 Column 3 Vertical Guide Rail 4 Elevator M1 Vertical Drive Motor M2 Horizontal Drive Motor 7 Horizontal Guide Rail 8 Mounting Base 9 Spindle Head S Processing Cutter 14 Elevating Guide 15 Cover SW Detecting Means 29 Limit switch 30 Contact W Processed material

Claims (1)

[Claims] Above the work material clamped and fixed by vise means,
In a woodworking machine that is provided with a processing cutter, and controls and drives this processing cutter in at least two vertical and horizontal directions to perform mortise processing in appropriate places on the work material, establish a column behind the vise means, and use this column for this column. An elevating body that is vertically controlled by a vertical drive motor, and a mounting base that is provided for the elevating body and that is laterally controlled by a lateral drive motor are provided, and a spindle head having a processing cutter is provided on the mounting base. , A column or an elevating body is provided with an elevating guide, and the elevating guide is provided with a cover body that covers the machining cutter and has a lower end corresponding to the upper surface of the work material. A cutting cover device such as a mortise grinder characterized by being regulated by the processing material.