JPH0124601B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is capable of efficiently machining the upper and lower flat parts of a large cross-section piece of wood, such as a long, wide, and arch-shaped piece of wood, by reducing operation loss. This article relates to a large cross-section automatic processing machine for cutting.

(Prior Art) Conventionally, when cutting the flat upper surface of a large cross-section workpiece 23, such as the one shown in FIG. Now, when processing the straight part A of the workpiece 23 and when processing the bent part B, the cutter is moved to the workpiece 2.
Since the machine was machined by moving it by a length L of 3 or more, there was a large loss of working time, and the workability was extremely poor, making it inefficient and uneconomical.

(Technical Problem) This invention enables the surface cutting of large cross-section workpieces as described above to be performed with excellent maneuverability by eliminating wasteful traveling movement loss of the machine and with the minimum necessary movement corresponding to the shape of the workpiece. The technical challenge is to automatically and continuously perform efficient and stable cutting operations.

(Technical Means) The present invention has been made to solve the above-mentioned technical problems, and the automatic large-section wood processing machine of the present invention will be described in detail below with reference to drawings.

Reference numeral 1 denotes a main body frame that can run back and forth in the longitudinal direction on rails 2, 2 on both the left and right sides while straddling a surface plate 22 on which a workpiece 23 is clamped. It's starting to run. Further, a sliding plate 4 is mounted on the front surface of the main body frame 1, and can be moved laterally from side to side along the guide frame 1a by rotation of a feed screw 5 driven by a blade traversing motor 6. On the front side of the turret 7, a cutter 9 supported at the lower end by bearings 10, 10 is mounted on a guide 4 by operating an adjusting screw 8.
It is mounted so that it can be adjusted vertically along the axis a. The cutter 9 is rotatably driven by a motor 13 provided on the tool rest 7, and a hood 11 is provided on the cutter 9 so that cutting waste is sucked through a duct 12. It's getting old. Reference numeral 15 denotes a support rod parallel to the axis of the cutter 9, which is integrally disposed in front of the lower end of the tool rest 7 by a protruding rod 14. Each sensing switch 16, such as a limit switch, has an operating piece 16' that engages with the upper surface of the workpiece 23 at four positions corresponding to the lateral movement amount +α dimension portion, respectively.
a, 16b, 16c, and 16d are provided, respectively. In this invention, while even one sensing switch is engaged with the upper surface of the workpiece 23, forward cutting or retreating continues, and when all the sensing switches are turned off during forward movement, the cutting continues for the timer set time. When the cutting process is completed and all the sensing switches are turned off during reversing, the reversing stops, the cutter moves laterally to a predetermined size, and then moves forward again to perform the cutting process, thus repeating the cutting process. . Reference numeral 17 denotes a circular saw table equipped with a circular saw 18 driven by a motor 19, which can be horizontally fed along the rear surface of the main body frame 1 by a circular saw feed motor 21. Further, the circular saw table 17 has a pivot 2
It can be rotated 90 degrees around 0, and the circular saw 18 is at the chain line position 1.
It can be rotated 90 degrees up to 8'.

(Operation of the embodiment) The operation of the embodiment will be mainly explained based on FIG. 7 of the drawing. First, a workpiece 23 having a shape of a straight part A and a bent part B shown in FIG. 7 is clamped onto a surface plate 22. Then, the main body frame 1 is moved and the cutter 9 is moved to the forward start position. Therefore, the thickness of the workpiece 23 is measured, and the cutting allowance is set using the adjusting screw 8. Then, measure the width S dimension of the workpiece 23 and divide it by the amount of lateral movement of the cutter 9.
Enter that number into the counter, determine the total amount of movement of Cutter 9, and activate Cutter 9. Then, when the cutting automatic push button switch is turned on, the main body frame 1 starts moving forward, and the cutter 9 starts moving forward from its position and starts cutting. Then, all four sensing switches 16a to 16d are separated from the workpiece 23,
Immediately after the switch is turned off, the timer starts working, and the cutter continues to rotate until the time set on the timer runs out. When the cutter 9 completes processing, the timer goes off, the cutter 9 stops, and the feed of the main body frame 1 stops, and the feed is reversed. enters and retreats. At this time, the cutter 9 and the sensing switch 16a~
16d returns to the place where it was processed, that is, first the sensing switch is turned on, and when it passes over the workpiece 23, each of the sensing switches 16a to 16d are turned off. At the same time as the sensing switch is turned off, the main body frame 1 stops and the cutter 9 moves laterally by a certain amount (at the same time, the cutter rotates). When a certain amount of horizontal movement is completed, the start will automatically start.
Perform forward cutting work. This process is repeated automatically by the number on the counter, and the work is completed.
However, it is fine if it does not hit the workpiece 23 even if it moves horizontally by a certain amount, such as the cutter 9 in the position,
When the cutter 9 is in the processing position, if the cutter 9 moves laterally at the cutter location, the cutter 9 will hit the workpiece 23 and the machine will be damaged. Therefore, in order to prevent this, the sensing switch 16a is set in advance to the horizontal movement dimension of the cutter +α.
Therefore, when the cutter 9 advances cutting to the 〓 position and then retreats, the sensing switch 16a is activated.
While the machine is in operation, the main body frame 1 retreats and returns to its position, so no damage to the machine occurs. After stopping at that position, it moves laterally by a certain amount, then automatically starts and performs forward cutting work. That is, when the cutter 9 cuts the bent portion B of the workpiece 23, the main body frame 1 simply moves forward and backward through the bent portion B from position←→position〓 to position←→position〓. It is sufficient to move the straight part A over a short distance.
Only when cutting is performed, the straight part A is passed in the front and back direction from position ←→position to position ←→position, that is, when cutting is performed by moving the workpiece 23 by more than the length L. It's good. In addition, in the illustrated embodiment, since a circular saw device capable of cutting in the vertical and horizontal directions is attached, the workpiece 23 can also be cut to the length, width, etc. Further, when the workpiece 23 is turned upside down and fixed to the surface plate 22 to perform back side processing, the sensing switch 16d plays the same role as the sensing switch 16a.

(Effects of the Invention) Since the automatic large-section wood processing machine of the present invention is configured as described above, as described above,
Excellent ability to perform automatic and continuous surface cutting of large cross-section workpieces with efficient, stable cutting with excellent mobility and minimal movement required to accommodate the shape of the workpiece, eliminating unnecessary travel and operation losses. It has the effect of
Also, on the support rod in front of the tool rest, at least approximately both ends of the cutter and the amount of lateral movement +α on both sides of the cutter are attached.
There are four sensing switches corresponding to each dimensional part, and while even one sensing switch is working, forward cutting or backward cutting continues, and when all the sensing switches are turned off during forward cutting, the timer advances for the set time. When the cutting process is completed and all the sensing switches are turned off when moving backward, the cutter stops moving backwards, moves laterally to a predetermined dimension, moves forward again, and performs the cutting process, and the cutting process is repeated. When the machine moves laterally, there is no risk of it hitting the workpiece and causing damage or trouble, and constant, reliable cutting ensures smooth machining of large cross-sections with good workability and efficiency. There are great effects that can be achieved. In addition, a minimum of four sensing switches are appropriately installed in front of the cutter, one of which
The main body frame continues to move forward or backward while the sensor is working, and even if all the sensing switches are turned off during forward movement, the main frame is designed so that it can move forward for the timer set time and complete the cutting process. As a result, no inconvenience occurs at the end or beginning of machining, completely reliable cutting can be performed, and there are also effects such as reciprocating cutting and unidirectional cutting.

[Brief explanation of drawings]

The drawings show an embodiment of the automatic processing machine of the present invention, in which Fig. 1 is a partially omitted front view, and Fig. 2 is a partially omitted front view.
The figure is a left side view of the same, FIG. 3 is a plan view of the same, FIG. 4 is a rear view of the same, FIG. 5 is an enlarged left side view with a partial longitudinal section of the main part, and FIG. FIG. 7 is an explanatory diagram showing the process of cutting a large cross-section workpiece. 1...Body frame, 1a...Guidance frame, 2...
Rail, 3... Vertical feed motor, 4... Sliding plate,
4a...Guide, 5...Feed screw, 6...Blade lateral feed motor, 7...Turret, 8...Adjustment screw, 9...
...Cutter, 10... Bearing, 11... Hood, 1
2... Duct, 13... Motor, 14... Protrusion rod, 15... Support rod, 16a-16d... Sensing switch, 16'... Action piece, 17... Circular saw stand, 1
8...Circular saw, 19...Motor, 20...Pivot,
21...Circular saw feed motor, 22...Surface plate, 23
...Processed material, A...straight part, B...bent part, S...
...width, L...length.

Claims (1)

[Claims] 1. A main body frame that can move back and forth in the longitudinal direction across a surface plate on which a workpiece is clamped on the upper surface, a tool rest that has a cutter at the lower end that is attached to the front surface of the main frame so that it can be moved laterally, and a It consists of a sensing switch that engages with the upper surface of the workpiece at four locations corresponding to at least substantially both ends of the cutter and the lateral movement +α dimension portions on both sides of the cutter, each of which is provided on a support rod parallel to the cutter axis,
As long as even one sensing switch is working, forward cutting or backward cutting continues, and when all sensing switches are turned off during forward movement, the timer advances the time set and the cutting process is completed, and when moving backward, all sensing switches are turned off. This automatic large-section wood processing machine is characterized in that when a cut is made, the cutter stops retreating, moves laterally to a predetermined size, and then moves forward again to repeat the cutting process.