JPH0985708A - Precutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to simplify the constitution by shortening the cutting stroke. SOLUTION: A pair of elevation bases 8 are provided at both sides of a working material W clamped by vice means 4. Turning bases 14a, 14b which turn in a horizontal plane are provided at the bases 8, and drive motors 16a, 16b having rotary shafts S1, S2 protruding at both ends are disposed at the bases 14a, 14b. Cutters (a), (b) are mounted at the shafts S1, S2. Turning means 17a, 17b for altering the directions of the motors 16a, 16b at 180 degrees are provided at the bases 14a, 14b.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precut machine for performing tenon cutting (female tenon processing) on both side surfaces of a clamped workpiece. 2. Description of the Related Art In a conventional frame construction method, for example, there is a joint shown in FIG. 3 for connecting horizontal members, and a processing machine for performing this type of tenon processing. Then, what is proposed in Japanese Utility Model Publication No. 6-32324 is known. This conventional processing machine is characterized in that it can simultaneously cut the tenon portions on both sides of the processed material, and is widely used in the construction industry. The above-mentioned tenon portion is composed of a reference plane portion m and a female tenon portion n connected to the reference plane portion m, and two kinds of cutting processes are required. In order to deal with this, the conventional mortise processing machine is one in which two cutting heads are arranged in the vertical direction and are sequentially used. Therefore, the conventional one is
There is a problem in that the vertical stroke is increased by the distance between the cutting heads and the structure is large. The present invention has been made by paying attention to the above-mentioned problems of the prior art, and a precut process capable of shortening the stroke and simplifying the structure of the machine by devising the structure of the cutting head. It aims to provide a machine. In order to achieve the above object, the precut processing machine according to the present invention is configured as follows. That is, the main point is
Providing a pair of lifting bases that move up and down on both sides of the transfer path,
In a processing machine that performs mortise processing on both sides of a processed material with a cutter attached to this lifting base, a swivel base that swivels in a horizontal plane and a horizontal rotating shaft at both ends of the swivel base that is swung on a horizontal plane. A drive motor provided is provided, and a cutter is attached to each rotation shaft of the drive motor. By operating the swivel head in a horizontal plane, the direction of the drive motor can be changed, and two cutters attached to both ends can be set alternately at the cutting position and the retracted position. Therefore, tenon processing can be performed by using two kinds of cutters in sequence at the same cutting position. EXAMPLE An example of the precutting machine according to the present invention will be described below. In FIGS. 1 and 2, 1
Are base frames 2 and 2 are front and rear mounting bases 3 provided in the central portion of the base frame 1 are front and rear feeding means 4 and 4 for controlling the movement of the mounting base 2 in the front and rear direction, and 4 are vise provided above the mounting bases 2 and 2. Means This vise means 4 is composed of a pair of left and right vise pieces 4a, 4b, and centripetally clamps the workpiece W. 5
Is a transfer path arranged between the front and rear vise means 4, 4 for receiving the processed material W and transferring it in the longitudinal direction. Reference numeral 6 designates a gate-shaped frame 7 and 7 provided on both sides of the mounting base 2 so as to be erected on the base frame 1, and vertical guide rails 8 and 8 disposed on the column portions on both sides of the gate-shaped frame 6 respectively. An elevating base 9 slidably arranged on the guide rails 7, 7 is a connecting beam connecting both elevating bases 8, 8 is a connecting beam 9
Elevating / feeding means 11, 11 for controlling the movement of the elevating / lowering bases 8, 8 via the guides are guide rails arranged in the left-right direction on the front surface of the elevating / lowering bases 8, 8. Reference numerals 12 and 12 denote laterally movable bases 13 slidably disposed on the guide rails 11 and 11, respectively, and lateral feed means for controlling movement of the laterally movable bases 12 and 12.
The lateral feeding means 13 aligns the left and right moving bases 12, 12 with the centripetal lines of the vise pieces 4a, 4b to open and close centripetically. The above-mentioned front-rear feeding means 3 and lifting feeding means 10
The lateral feed means 13 is basically composed of a servo motor driven by NC control, a feed screw shaft for driving the motor, and a nut body screwed onto the screw shaft. Reference numerals 14a and 14b denote left and right moving bases 1.
Revolving bases that are disposed on the bottom surfaces of 2 and 12 so as to be rotatable. The revolving bases 14a and 14b are supported by vertical support shafts 15 and 15 and rotate within a range of 180 degrees. 1
6a and 16b are drive motors horizontally attached to the swivel bases 14a and 14b.
Has rotating shafts S1 and S2 protruding from both ends, and cutters a and b are attached to the respective ends via chucks. In the example of the figure, one cutter a is used for cutting the reference plane portion, and the other cutter b is used for cutting the tenon portion. Reference numerals 17a and 17b denote swivel bases 14a and 14b.
The pinion gear 18, the rack gear 19, and the pneumatic cylinder 20 that operates the rack gear 19 in the left-right direction are mounted on the support shaft 15. When the above-mentioned turning means 17a, 17b are operated, the turning bases 14a, 14b are turned to set the cutters a, b in the left-right direction alternately at the cutting position and the retracted position. Two
Reference numeral 1 is a light beam display that irradiates the upper surface of the processed material W with a marking light beam. The configuration of the precut processing machine according to one embodiment is as described above, and the required tenon processing is performed on the side surface portion of the processed material W as follows. Here, the tenon processing shown in FIG. 3 will be described as an example. This processing is performed by using a large-diameter cutter that cuts the reference plane portion m and a molding cutter that cuts the female tenon portion n. Are attached to the rotary shafts S1 and S2, respectively. In the cutting process, first, the work material W is supplied to the transfer path 5, and the black line attached to the upper surface of the work material W is aligned with the marking position of the light beam display 21. Then, in this state, the vise means 4 and 4 are operated and clamped and fixed. The above clamping operation is performed centripetally, and the processed material W is attached with reference to the center in the width direction as shown in FIG. After the work material W is set as described above, program data stored in a control device (not shown) is called, and thereby each servo motor is controlled and driven to start mortise processing. That is, when the operation is started by operating the switch, the front and rear feeding means 3 first move the clamped workpiece W to the left in FIG.
Positioned just below the center position in b. At the same time, the lateral feed means 13 controls the left and right moving bases 12 and 12 to move in the closing direction, and sets the distance between the pair of cutters a and a to the distance corresponding to the width of the reference plane portions m and m. When the distance between the cutters a, a is determined, the elevating / feeding means 10 moves down the elevating / lowering bases 8, 8. Along with this, the cutters a, a are lowered, and the reference flat surface portions m, m are cut on both side surface portions of the processed material W. The cutting operation by descending is performed based on a command from a detection unit (not shown) that detects the upper surface position of the workpiece W, and stops when the cutters a, a pass the lower surface position of the workpiece W. When the machining of the reference planes m, m is completed, the elevating bases 8, 8 return to the upper position which is the elevating start end, and then the swiveling means 17a, 17b move the swivel base 1 to the upper position.
4a and 14b turn 180 degrees. By this operation, one of the cutters a, a is in the retracted position and the other cutter b,
b is set by switching to the cutting position. When the distance between the cutters b at the cutting position is different from the width of the female mortises n, n to be cut, the left and right moving bases 12, 12 are controlled to open and close, and the cutters conform to the mortise width. When the setting of the cutters b, b is completed, the ascending / descending feed means 10 descends the ascending / descending bases 8, 8, and this operation causes the cutters b, b to be cut on both side surfaces of the workpiece W to be a reference plane portion m. The female mortise parts n, n connected to m are cut. The processing of the female mortises n, n is given numerically by the above-mentioned detection means (not shown) with the upper surface position of the processed material W as a base point. When the required tenon processing is completed by the above two steps, the elevating bases 8 and 8 are returned to the upper position, the turning bases 14a and 14b are turned, and the cutters a and b are exchanged. Further, the vise means 4 and 4 are opened so that the workpiece W
The clamp is released. With the release of the clamp, the worker transfers the work material W in the longitudinal direction to deal with the next cutting work. In the above embodiment, the case where one type of tenon a and the other cutter b are sequentially used to perform one type of tenon processing has been described. The other can be used as a spare or for other types of mortise processing. Further, in one embodiment, both the left and right cutters are controlled to be lowered by the single elevating / feeding means 10 to perform mortise processing on both sides. Chisel mortise processing can be performed. In addition, the above-mentioned mortise processing on only one side is such that the left and right moving bases 12 and 12 are laterally moved separately, or the swivel bases 14a and 14b are turned to 90-degree positions and the cutters are moved forward and backward to cut positions. It can be achieved within the scope of design change by using a configuration such as saving from. Note that the cutter in the retracted position may not be rotationally driven for safety reasons. As described above, the precut processing machine according to the present invention is such that the drive motor is rotated in the horizontal plane and the cutters at both ends are exchanged and used at the same cutting position. Therefore, the excellent effect that the stroke in the cutting direction can be shortened and the machine structure can be made smaller and simpler can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of a pre-cut processing machine according to the present invention. FIG. 2 is a side view of the same. FIG. 3 is an explanatory diagram showing a configuration of a tenon portion in a joint portion. [Description of Reference Signs] 4 Vise Means 5 Transfer Path 8 Elevating Base 10 Elevating Feeding Means 12 Left / Right Moving Bases 13 Lateral Feeding Means 14a Swiveling Bases 14b Slewing Bases 16a Drive Motors 16b Drive Motors S1 Rotation Shafts S2 Rotation Shafts a Cutters B Cutters 17a Swings Means 17b turning means W processed material m reference plane part n female mortise part

Claims (1)

Claims: A vise means is provided on both sides of a transfer path for transferring a work material in the longitudinal direction, and a pair of elevating bases for elevating operation are provided on both sides of the transfer path, and a plurality of cutters attached to the elevating bases. In a processing machine that performs mortise processing on both side parts of the processed material by the above-mentioned lifting base, a turning base that turns in a horizontal plane,
A pre-cut processing machine, characterized in that it is provided with a drive motor which is held on the swivel base and has horizontal rotary shafts at both ends, and cutters are attached to the rotary shafts of the drive motor.