JPH01281815A - Material tip positioning device at saw board - Google Patents

Abstract

PURPOSE:To conduct the positioning of the tip accurately and easily, by making a constitution so that a material may be pinched and fixed by means of a material delivery vice and its tip may be decelerated to a slow delivery when it comes to a set point after passing a fixed point with a quick delivery and the tip may stop as soon as it comes into contact with a saw edge. CONSTITUTION:When a material delivery vice 23 has come to the most advancing position, pinching and fixing are done so that the tip of a material M may come out beyond a saw edge surface K, and an outside signal E for quick delivery is given to a delivery speed controller 47, and the material delivery vice 23 is advanced at a quick delivery. When a photoelectric switch 39 inspects the tip, a preset counter 45 starts the calculation of the pulse of a rotary encoder 43. And when a calculated value has become a predetermined value opposing l2, the preset counter 45 outputs a deceleration signal, and deceleration into a slow delivery is started from a B point. When the tip of the material M comes into contact with a saw edge 9, the 2nd detector 41 inspects it, and the supply of pressure oil to an oil cylinder 51 is stopped, and stoppage is made at the place where the tip of the material M has been brought into contact with the saw edge 9. Accordingly, the positioning work of the tip can be conducted accurately and easily.

Description

[Detailed description of the invention] [Object of the invention] (Field of industrial application) This invention is! This invention relates to a device for positioning the tip of a material in ll'iW.

(Prior art) In recent years, with the spread of high-mix, low-volume production in industry and the development of production synchronization methods, for example, saw machines, etc. After cutting, the remaining material is stored in a warehouse or the like, and when it is necessary to cut the same material, it is taken out and the same cutting operation is performed again.

In the cutting operation again, since the tip of the material has been cut flat by the previous cutting, there is no need for trimming (grooving the tip) as with a new material. Therefore, conventionally, an operator would cut the material into a saw machine. The necessary cutting position was measured from the end face of the material using a scale, etc., the measured position was adjusted to match the saw blade surface, and the material was clamped and fixed in the main body vise for cutting.

(Problems to be Solved by the Invention) As mentioned above, in order to position the cross section of the material, the operator measures the length from the end face of the material to the cutting position using a scale, etc. There was a problem in that the adjustment work to accurately match the saw blade surface was troublesome. This invention was created with a focus on these problems, and eliminates the conventional scale adjustment by workers, prevents loss of material due to measurement errors, and efficiently adjusts the tip of the material. 6 which aims to provide a positioning device.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention includes a main body vise that clamps and fixes the material, and a material feeding vise that feeds the material to the main body vice by a fixed length. In a saw machine, a first detector detects when the tip of the material passes a fixed point A, a second detector detects when it comes into contact with the saw blade, and a position B at the tip of the material after passing the fixed point. (dimension), a position setting device for the deceleration position of the feed speed @ point B after the tip of the material passes the fixed point A, and a feed speed controller.

(Function) Since the material is configured as described above, the material is clamped and fixed by the material feeding vise, and is rapidly fed in the direction of the saw blade, and when its tip passes the fixed point A, it is detected by the first detector.

When the tip of the material reaches the 8 preset points, the first
The tip position (
The material is detected by a third detector that detects the size) and a position setting device, and the material is decelerated from fast feed to an arbitrarily set slow feed by a feed speed controller. When the leading edge of the workpiece contacts the saw blade during slow feed, it is detected by the second detector and the workpiece is stopped by the feed rate controller. In this way, the tip of the material can be aligned accurately with the saw blade surface K.

(Example) Next, an example of the present invention will be described based on the drawings. FIG. 2 is a three-dimensional view of a hinged saw machine embodying the present invention. This hinge type saw machine 1 is composed of a cutting section 3 for cutting the material M, a support section 5 for placing the material M, and a vice section 7 for clamping and fixing the material M and feeding it by a fixed length. . Cutting 11113 is done with saw blade 9. IJA blade housing 11. Consists of a guide arm 13, etc., and a saw blade housing 1
A pair of wheels (not shown) for rotatably suspending the saw blade 9 are installed inside the saw blade 1 .

The support portion 5 includes a roller 15 for placing and supporting the material M, a frame 17 for supporting the roller, a table 19, and the like. The vice section 7 consists of a main body vice 21 and a material feeding vice 23. The main body vise 21 consists of a main body fixed vice jaw 25 and a main body movable vice jaw 27, and has a saw blade 9.
is located close to the cutting location. Material feeding vise 23
Like the main body vise 21, it consists of a material feeding fixed vise 29 and a material feeding movable vise 31, and is reciprocated in the direction of the main body vice 21 by a hydraulic device (see FIG. 1, reference numeral 33) to keep the material M constant. Send materials. The display 35 is for displaying the cutting dimension of the material M, and the handle 37 is for changing the maximum working position of the material feeding vise 23 to change the cutting dimension.

FIG. 1 is a detailed explanatory diagram of the present invention. First detector 3
9 is, for example, an ultrasonic sensor or a photoelectric switch, and the distance II is fixed depending on the saw blade surface! It (n + position).The second detector 41 electrically insulates the saw blade 9 and the material M, applies a low voltage between them, and detects contact by voltage change due to contact. However, a microswitch may be provided at the tip of the guide arm 13 (see Fig. 2) that guides the saw blade to detect minute movements of the saw blade. It consists of a rack that interlocks with the rack 23 and a rotary encoder that is driven by a shaft that meshes with the rack.

The position setting device 45 consists of a preset counter, starts counting the pulses input from the third detector 43 from the detection signal of the first detector 39, and when the count value reaches a set value corresponding to 8 points, it outputs a deceleration signal. Output. The feed rate controller 47 controls the current sent to the solenoids 49a and 49b of the electromagnetic proportional throttle direction switching valve 49 of the hydraulic device 33, thereby controlling the feed direction and feed rate of the material.

Next, a method for positioning the tip of the material using this device will be explained. First, the material M is clamped and fixed by the material feeding vise 23 so that the tip of the material M comes out first from the saw blade surface when the material feeding vice 23 reaches the most forward position, and the material M is clamped and fixed by the material feeding vise 23 so that the tip of the material M comes out first from the saw blade surface. A signal is given to move the material feeding vise 23 forward in rapid traverse. When the photoelectric switch 39 detects the leading edge of the material M, the preset counter 45 starts counting the pulses of the rotary encoder 43.

When the count value reaches a set value corresponding to 2 again, the preset counter 45 outputs a deceleration signal, and the material M is decelerated from point 8 to an arbitrarily set slow speed by the feed rate controller 47. When the tip of the material M comes into contact with the saw blade 9, it is detected by the second detector 41, the supply of pressure oil to the hydraulic cylinder 51 is stopped by the feed rate controller 47, and the tip of the rope material M comes into contact with the saw blade 9. It stops when it comes into contact with. The positioning function of the material thus positioned is stopped by an external signal E, etc., and the cutting operation is performed by normal operations.

[Effects of the Invention] As understood from the above description, since the present invention has the configuration described in the claims, it is possible to accurately and easily position the tip of the material.

Therefore, it is possible to prevent the material from falling off due to the operator's misreading of the scale as in the past, and to streamline the positioning work.

[Brief explanation of the drawing]

FIG. 1 is a detailed explanatory diagram of the present invention, and FIG. 2 is a three-dimensional view of a hinged saw machine embodying the invention. Explanation of symbols representing main parts of the drawings 9... Saw blade 21... Main body vice 23... Material feeding vice 33... Hydraulic device 39...
First detector 41...Second detector 43-...Third detector 45...Setting device 47...Feed rate controller 49...Electromagnetic proportional throttle directional switching valve 51...・Hydraulic cylinder M...Material agent Patent attorney Yasu Miyoshi Rikitsutsu 1 Figure 20 Procedural amendment four tears button August 97, 1988

Claims (1)

[Claims] In a saw machine equipped with a main body vise that clamps and fixes the material, and a material feeding vise that feeds the material to the main body vise at a fixed length, a first detector that detects when the leading edge of the material passes through a fixed point A, and a saw blade equipped with a A second detector that detects contact and a fixed point A
A third detector for detecting the position of the tip of the material after passing through a fixed point A, a position setter for a point B at which the feed speed is decelerated after the tip of the material passes a fixed point A, and a feed speed controller. Positioning device for the tip of the material.