JP7345077B1 - Processing machine - Google Patents

Abstract

An object of the present invention is to accurately measure the amount of conveyed material. A measuring unit 30 is provided with a first roller 32 in contact with the material W to be transported, and on a downstream side of the first roller 32 in the transport direction Fd, and in contact with the material W to be transported. a sensor 35 that is provided between the first roller 32 and the second roller 33 and measures the conveyance amount by irradiating the material W with detection light from a direction perpendicular to the conveyance direction Fd; including. The sensor 35 emits detection light from a position that is a predetermined distance Ls away from the position P1 of the first roller 32 and the common tangent line Ct of the second roller 33. [Selection diagram] Figure 2

Description

The present invention relates to a processing machine.

2. Description of the Related Art Processing machines that perform processing such as drilling and cutting on materials such as shape ropes are known. When this type of processing machine conveys the material by a predetermined amount, it stops conveying the material, positions the material, and performs necessary processing on the material. In order to perform processing with high precision, it is necessary to accurately measure the amount of material conveyed.

Patent Document 1 discloses a length measuring device that measures the amount of conveyance of a long material. This length measuring device brings the outer peripheral surface of a length measuring disk into contact with a long material being conveyed, and measures the amount of rotation of the length measuring disk that rotates as the material is conveyed. The length measuring device measures the amount of material conveyed based on the amount of rotation of the length measuring disk and the circumferential length of the outer peripheral surface.

Patent Document 2 discloses a steel length measuring device that includes a laser Doppler velocimeter that measures the length of a steel material. If the steel material has a large bend, the amount of meandering of the steel material will increase, and the laser will miss the focal point on the steel material, making it impossible to perform normal measurements. Therefore, the steel material length measuring device controls the laser irradiation position of the laser Doppler velocimeter on the steel material according to the meandering amount of the steel material.

Japanese Patent Application Publication No. 2000-275037 JP 2017-150973 Publication

However, the method disclosed in Patent Document 1 does not solve the problem of slippage occurring between the material and the length measuring disk, and a problem remains in measurement accuracy. On the other hand, although the method disclosed in Patent Document 2 can be expected to improve measurement accuracy, it is necessary to detect bending of the material and move the head of the laser Doppler velocimeter.

One aspect of the present invention includes a processing section that processes a material transported along the transport direction, and a measurement section that measures the amount of the material transported, and the measurement section is configured to A first contact member that contacts the material; a second contact member that is provided downstream of the first contact member in the transport direction and contacts the material to be transported; and a second contact member that contacts the first contact member. a sensor that is provided between the material and the material and measures the conveyance amount by irradiating the material with detection light from a direction perpendicular to the conveyance direction; Detection light is irradiated from a position a predetermined distance away from the object.

According to one aspect of the present invention, the relative positional relationship between the first roller, the second roller, and the sensor is always maintained. Thereby, the detection light can be irradiated onto the material from a position a predetermined distance away from the material without detecting bending of the material.

According to one aspect of the present invention, the amount of transported material can be measured with high accuracy.

FIG. 1 is a top view showing the configuration of a processing machine according to a first embodiment. FIG. 2 is an explanatory diagram schematically showing the configuration of the measuring section. FIG. 3 is an explanatory diagram showing the rotational movement of the measuring section in the horizontal direction. FIG. 4 is a diagram showing a modification of the measuring section included in the processing machine according to the first embodiment. FIG. 5 is a side view showing the configuration of a measuring section and a moving mechanism included in the processing machine according to the second embodiment. FIG. 6 is a top view showing the configuration of a measuring section and a moving mechanism included in the processing machine according to the second embodiment. FIG. 7 is a flowchart showing the operation of the measuring section. FIG. 8 is an explanatory diagram showing the configuration of the processing machine 1 according to the third embodiment. FIG. 9 is an explanatory diagram showing areas where sensors can be placed. FIG. 10 is an explanatory diagram showing a modification of the measuring section included in the processing machine according to the third embodiment.

Hereinafter, a processing machine according to this embodiment will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a top view showing the configuration of a processing machine according to a first embodiment. FIG. 2 is an explanatory diagram schematically showing the configuration of the measuring section. In explaining the configuration of the processing machine, the left-right direction, the front-back direction, and the up-down direction (direction perpendicular to the paper plane in the drawing) are used as definitions of directions. The left-right direction and the front-back direction correspond to two directions perpendicular to each other in the horizontal direction, and the up-down direction corresponds to the vertical direction. However, these directions are merely directions defined for convenience in order to explain the processing machine according to this embodiment.

The processing machine 1 according to the present embodiment includes processing sections 10 and 11 that process the material W transported along the transport direction Fd, and a measurement section 30 that measures the amount of the transported material W. It is equipped with The measurement unit 30 includes a first roller 32 that contacts the material W to be transported, and a second roller that is provided downstream of the first roller 32 in the transport direction Fd and that contacts the material W to be transported. 33, and a sensor 35 that measures the conveyance amount by irradiating the material W with detection light from a direction perpendicular to the conveyance direction Fd. The sensor 35 irradiates detection light from a position separated by a predetermined distance Ls from the common tangent line Ct of the first roller 32 and the second roller 33.

The details of the processing machine 1 according to the first embodiment will be described below. The processing machine 1 according to the present embodiment is a drilling machine that transports and positions a long material W, and performs a drilling process on the positioned material W. The material W in the processing machine 1 is transported from the rear side to the front side with the longitudinal direction of the material W along the front-rear direction. The material W to be processed is a long material that is elongated in one direction, and is, for example, an H-shaped rope. H-section steel is also referred to as I-beam, H-beam, W-beam, universal beam, Rolled Steel Joist (RSJ), or double-T, and is a beam with an I- or H-shaped cross section.

The processing machine 1 includes left and right processing sections 10 and 11. The left and right processing units 10 and 11 are spaced apart from each other in the left and right direction, which is a direction perpendicular to the transport direction Fd. The left and right processing sections 10 and 11 are arranged to face each other with the material W in between.

The left processing section 10 is arranged so as to face the left side surface (left flange) of the material W, and performs drilling on the left side surface of the material W. The processing section 10 on the left side can be moved in the left-right direction and the up-down direction (perpendicular to the plane of the paper) by a drive mechanism (not shown). The left processing section 10 may be configured to be movable in the front-back direction.

The right processing section 11 is arranged so as to face the right side surface (right flange) of the material W, and performs drilling on the right side surface of the material W. The right processing section 11 can be moved in the left-right direction and up-down direction by a drive mechanism such as an air cylinder or a hydraulic cylinder. The processing section 11 on the right side may be configured to be movable in the front-back direction.

The left and right processing units 10 and 11 are, for example, drill head devices. Spindles (not shown) are rotatably supported in the left and right processing sections 10 and 11, and drills 10a and 11a are attached to the tips of the spindles.

Although not shown in FIG. 1, the processing machine 1 is disposed so as to face the upper surface (web) of the material W, and includes an upper processing section that performs perforation on the upper surface of the material W. That is, the processing machine 1 can perforate the material W from three directions: upward, rightward, and leftward.

The processing machine 1 includes fixed vises 13 and 15 on the loading and unloading sides, movable vises 12 and 14 on the loading and unloading sides, pinch rollers 19 and 21 on the loading and unloading sides, and pinch rollers 19 and 21 on the loading and unloading sides. Pressure rollers 18 and 20 are provided.

The fixed vises 13 and 15 on the carry-in side and the carry-out side are fixedly arranged on the right side of the processing machine 1 with respect to the material W to be conveyed. The fixed vice 13 on the carry-in side is arranged upstream of the processing section 11 on the right side in the conveying direction Fd, that is, on the carry-in side of the material W. The fixed vice 15 on the unloading side is disposed on the downstream side of the right processing section 11 in the transport direction Fd, that is, on the unloading side of the material W.

The movable vises 12, 14 on the carry-in side and the carry-out side are provided corresponding to the fixed vises 13, 15 on the carry-in side and the carry-out side. The movable vice 12 on the carry-in side is arranged to face the fixed vice 13 on the carry-in side in the left-right direction, and the movable vice 14 on the carry-out side is arranged so as to face the fixed vice 15 on the carry-out side in the left-right direction. The movable vises 12 and 14 on the carry-in side and the carry-out side are configured to be movable in the left-right direction by a drive device such as an air cylinder or a hydraulic cylinder.

When processing the material W, the movable vice 12 on the carry-in side is moved toward the fixed vice 13 on the carry-in side. The movable vise 12 and the fixed vice 13 on the carry-in side clamp the material W on the carry-in side rather than the processing position of the material W. Similarly, when processing the material W, the movable vice 14 on the unloading side is moved toward the fixed vice 15 side. The movable vise 14 and the fixed vise 15 on the unloading side clamp the material W on the unloading side rather than the processing position of the material W.

The pinch rollers 19 and 21 on the carry-in side and the carry-out side are fixedly arranged on the right side of the processing machine 1 with respect to the material W to be conveyed. The pinch roller 19 on the carry-in side is arranged on the upstream side in the transport direction Fd than the processing section 11 on the right side, and the pinch roller 21 on the carry-out side is arranged on the downstream side in the transport direction Fd than the processing section 11 on the right side. There is. The pinch rollers 19 and 21 on the carry-in side and the carry-out side are rotationally driven by receiving power from an actuator such as a motor.

The pressure rollers 18 and 20 on the carry-in side and the carry-out side are provided corresponding to the pinch rollers 19 and 21 on the carry-in side and the carry-out side. The pressure roller 18 on the carry-in side is arranged so as to face the pinch roller 19 on the carry-in side in the left-right direction, and the pressure roller 20 on the carry-out side is arranged so as to face the pinch roller 21 on the carry-out side in the left-right direction. There is. The pressure rollers 18 and 20 on the carry-in side and the carry-out side are composed of a pair of rollers spaced apart from each other in the conveying direction Fd. Further, the pressure rollers 18 and 20 on the carry-in side and the carry-out side are configured to be movable in the left-right direction by a drive device such as an air cylinder or a hydraulic cylinder.

When conveying the material W, the pressure roller 18 on the carry-in side is moved toward the pinch roller 19 on the carry-in side. The pressure roller 18 and the pinch roller 19 on the carry-in side pinch the material W on the carry-in side from the processing position of the material W. Then, by rotationally driving the pinch roller 19 on the carry-in side, the material W is conveyed along the conveyance direction Fd. Similarly, when transporting the material W, the pressure roller 20 on the delivery side is moved toward the pinch roller 21 on the delivery side. The pressure roller 20 and the pinch roller 21 on the carry-out side pinch the material W on the carry-out side rather than the processing position of the material W. Then, by rotationally driving the pinch roller 21 on the carry-out side, the material W is conveyed along the conveyance direction Fd.

As one of the features of this embodiment, the processing machine 1 includes a measuring section 30 that measures the amount of conveyed material W to be conveyed. The measurement unit 30 is disposed upstream of the carry-in side pinch roller 19 in the conveyance direction Fd, and on the downstream side of the carry-out side pinch roller 21 in the conveyance direction Fd. Each measuring section 30 is arranged on the right side of the processing machine 1 so as to face the right side of the material W. In this embodiment, the right side surface of the material W corresponds to the laser beam irradiation surface, that is, the measurement surface of the measurement unit 30.

As shown in FIG. 2, the measuring section 30 mainly includes a holding member 31, a first roller 32, a second roller 33, and a sensor 35.

The holding member 31 holds a first roller 32, a second roller 33, and a sensor 35.

The first and second rollers 32 and 33 are configured to be rotatable around a rotation axis extending in the vertical direction, and are supported by the holding member 31. The first roller 32 is located upstream of the second roller 33 in the transport direction Fd, and the second roller 33 is located downstream of the first roller 32 in the transport direction Fd. While supported by the holding member 31, a portion of the first and second rollers 32, 33 protrudes from the holding member 31.

Sensor 35 is a laser Doppler velocimeter. Specifically, the sensor 35 irradiates the material W being transported with a laser beam, which is detection light, from the laser projection surface 35a. The laser beam is irradiated onto the right side surface of the material W from a direction perpendicular to the transport direction Fd of the material W. The sensor 35 is arranged so that the focal position of the laser beam is located on the common tangent line Ct of the first roller 32 and the second roller 33. The sensor 35 measures the speed of the material W using the frequency of the laser beam changed by the Doppler effect. The speed of the material W measured by the sensor 35 is output to the control device 100 that controls the processing machine 1. Note that since there is a correlation between the speed of the material W and the amount of transport (amount of movement) of the material W being transported, measuring the speed of the material W means measuring the amount of transport of the material W being transported. It is equivalent to

In this measuring section 30, the sensor 35 is arranged at a relative reference position P3 determined from the center position P1 of the first roller 32 and the center position P2 of the second roller 33. Since the first roller 32, the second roller 33, and the sensor 35 are each held by the holding member 31, the relative positional relationship between the first roller 32, the second roller 33, and the sensor 35 is always maintained. Since such a positional relationship is maintained, the distance between the common tangent line Ct of the first roller 32 and the second roller 33 and the laser projection surface 35a of the sensor 35 is also maintained at a predetermined distance Ls. That is, the sensor 35 irradiates the detection light from a position separated from the common tangent Ct of the first roller 32 and the second roller 33 by a predetermined distance Ls. In a state where the distance between the sensor 35 (laser projection surface 35a) and the common tangent line Ct is the distance Ls, the focal position of the laser beam emitted from the sensor 35 is located on the common tangent line Ct. Further, in the example shown in FIG. 2, for convenience, a state in which the center of the sensor 35 is located at the reference position P3 is shown. However, the sensor 35 only needs to be arranged so that the laser projection surface 35a is separated from the common tangent line Ct by the distance Ls, and as long as this condition is satisfied, the position other than the center of the sensor 35 will be at the reference position P3. There may be.

The distance Ls is a sensor-specific distance required to measure the speed of the material W. In addition to the laser Doppler velocimeter, the sensor 35 may be one that uses images as described later. Therefore, the distance Ls and the reference position P3 are parameters that vary depending on the type of sensor 35. Needless to say, if the type of sensor 35 changes, the arrangement of sensor 35 will also change.

The holding member 31 of the measurement unit 30 is connected to a piston rod 37 of a hydraulic cylinder or an air cylinder via a cylinder bracket 36. The holding member 31 of the measuring section 30 receives force from the piston rod 37 and is pressed toward the material W side. Thereby, the first roller 32 and the second roller 33 come into contact with the material W.

FIG. 3 is an explanatory diagram showing the rotational movement of the measuring section in the horizontal direction. The cylinder bracket 36 of the measuring section 30 and the piston rod 37 are connected by a pin 38 inserted in the vertical direction. Thereby, the measurement unit 30 can horizontally rotate around the pin 38. Therefore, even if there is a distortion on the side surface of the material W, the measuring section 30 horizontally rotates so that the measuring section 30 follows the side surface of the material W, and the first and second rollers 32 and 33 move around the material. W can be contacted respectively.

According to the processing machine 1 having such a configuration, the operation of the processing machine 1 is controlled by the control device 100. When the material W is transported, a laser beam is irradiated from the measuring section 30 under the control of the control device 100, and the amount of material W transported is measured.

As shown in FIG. 2, since the measuring section 30 is pressed toward the material W by the piston rod 37, the first roller 32 and the second roller 33 come into contact with the material W. Therefore, the distance Lr from the center positions P1 and P2 of the first and second rollers 32 and 33 to the material W is always constant. Furthermore, since the total length of the material W is sufficiently long compared to the distance between the first roller 32 and the second roller 33, even if the material W is bent, the distance between the first roller 32 and the second roller 33 is sufficiently long. When viewed between the two rollers 33, the side surface of the material W can be regarded as a straight line. Therefore, the common tangent line Ct between the first roller 32 and the second roller 33 coincides with the side surface of the material W.

In addition, the relative positional relationship between the first roller 32, the second roller 33, and the sensor 35 is always maintained. Therefore, the distance Ls from the sensor 35 to the common tangent line Ct of the first roller 32 and the second roller 33, that is, the material W, is always maintained constant regardless of the bending of the material W. In addition, the direction of the laser beam emitted from the sensor 35 is maintained perpendicular to the conveyance direction of the material W. Therefore, it is guaranteed that the sensor 35 irradiates the material W with the laser beam at right angles from a position away from the material W by a predetermined distance Ls. Thereby, the measurement unit 30 can accurately measure the amount of conveyed material W to be conveyed.

When the control device 100 determines that the transport amount of the material W has reached the target distance based on the transport amount measured by the measurement unit 30, it stops transporting the material W. Next, the control device 100 operates the processing units 10 and 11 to perform a predetermined drilling process on the material W. Then, when the processing of the material W is completed, the control device 100 restarts the conveyance of the material W.

According to the processing machine 1 including the measuring section 30 having such a configuration, the following effects are achieved. That is, the sensor 35, which is a laser Doppler velocimeter, will have a measurement error if the distance to the material W changes or if the laser beam is not irradiated at right angles to the transport direction Fd of the material W. In this regard, according to the present embodiment, the relative positional relationship between the first roller 32, the second roller 33, and the sensor 35 is always maintained. This ensures that the laser beam is irradiated perpendicularly to the material W from a position that is a predetermined distance Ls away from the material W. Therefore, the measurement unit 30 can accurately measure the amount of transported material W, although it has a simple configuration.

In this embodiment, the measurement unit 30 includes a holding member 31 that holds the first roller 32 and the second roller 33, and also holds the sensor 35 at the reference position P3, and a holding member 31 that presses the holding member 31 toward the material W. , a piston rod 37 that brings the first roller 32 and the second roller 33 into contact with the material W.

According to this configuration, the distance Lr from the center positions P1 and P2 of the first and second rollers 32 and 33 to the material W is always constant. Further, the common tangent line Ct between the first roller 32 and the second roller 33 coincides with the side surface of the material W. Therefore, the distance Ls from the sensor 35 to the material W is always maintained constant regardless of the bending of the material W. Therefore, the measurement unit 30 can accurately measure the amount of transported material W.

In this embodiment, the holding member 31 of the measuring section 30 is rotatably connected to the piston rod 37.

According to this configuration, the holding member 31 can be rotated following the bending of the material W. Thereby, the first and second rollers 32 and 33 can be maintained in a state in which they are always in contact with the material W. The distance Ls from the sensor 35 to the material W is always maintained constant regardless of the bending of the material W. Therefore, the measurement unit 30 can accurately measure the amount of transported material W.

In addition, although the piston rod 37 was illustrated as a press member which presses the holding member 31, it is not limited to this. For example, a ball screw mechanism or the like may be used.

In addition, in this embodiment, the 1st and 2nd rollers 32 and 33 rotatably supported by the holding member 31 were illustrated as the 1st and 2nd contact member which contacts the material W. However, as long as it is a contact member that comes into contact with the material being conveyed, it is not limited to a roller. However, if the configuration includes the first and second rollers 32 and 33, it can rotate to follow the conveyance of the material W, thereby reducing frictional resistance and suppressing scratches that occur on the material W. I can do it.

In this embodiment, the measurement unit 30 is provided upstream of the carry-in side pinch roller 19 in the conveyance direction Fd, and downstream of the carry-out side pinch roller 21 in the conveyance direction Fd.

According to this configuration, since the material W is pressed by the pinch rollers 19 and 21 and the pressure rollers 18 and 20, the pinch rollers 19 and pressure rollers 18 on the carry-in side and the pinch rollers 21 and pressure rollers on the carry-out side The material W is held between the pressure roller 20 and the bending of the material W is corrected. However, such a correction function does not work upstream of the pinch roller 19 on the carry-in side or downstream of the pinch roller 21 on the carry-out side. Therefore, as shown in this embodiment, by bringing the first and second rollers 32 and 33 into contact with the material W, the distance Ls between the sensor 35 and the material W is maintained constant, and the distance Ls is maintained at a right angle to the material W. can be irradiated with a laser beam.

For example, a method is known in which the material W is held by a gripping portion of a carriage and the material W is transported by moving the carriage. However, since it is necessary to run the carriage parallel to the conveyance direction Fd, it is difficult to carry in the material W from the side where the carriage's running axis is located, and there is a disadvantage that the line layout of the machine is restricted. In this regard, in this embodiment, the pinch rollers 19 and 21 on the carry-in side and the carry-out side are rotationally driven to convey the material W, so that such inconvenience can be eliminated.

Note that even if the measurement unit 30 is provided only at one of the upstream side of the carry-in side pinch roller 19 in the conveyance direction Fd and the downstream side of the carry-out side pinch roller 21 in the conveyance direction Fd, good.

FIG. 4 is a diagram showing a modification of the measuring section included in the processing machine according to the first embodiment. In the embodiment described above, dedicated first and second rollers 32 and 33 are used to ensure the distance between the sensor 35 and the material W. However, in the modification shown in FIG. 4, the first and second rollers 40a and 40b forming the pressure roller 40 form a pair of rollers for ensuring the distance Ls between the sensor 40c and the material W. . Specifically, the sensor 40c is arranged at a relative reference position determined from the position of the first roller 40a and the position of the second roller 40b, and the sensor 40c is located at a relative reference position determined from the position of the first roller 40a and the position of the second roller 40b. is maintained.

According to this configuration, the first and second rollers of the measuring section are constituted by a pair of rollers 40a and 40b that constitute the pressure roller 40 on the carry-in side. In addition to producing the same effects as in the embodiment described above, since the sensor 40c can be mounted on the pressure roller 40, the number of parts can be reduced.

Note that the pressure roller 42 on the carry-out side may also have the same configuration as the pressure roller 40 on the carry-in side. That is, the first and second rollers of the measuring section may be configured by a pair of rollers 42a and 42b that constitute the pressure roller 42 on the delivery side.

(Second embodiment)
The processing machine 1 according to the second embodiment will be described below with reference to FIGS. 5 and 6. The feature of the second embodiment is that the measurement section 30 that measures the conveyance amount of the material W is configured to be vertically movable. Here, FIG. 5 is a side view showing the configuration of a measuring section and a moving mechanism included in the processing machine according to the second embodiment. FIG. 6 is a top view showing the configuration of a measuring section and a moving mechanism included in the processing machine according to the second embodiment. A description of the configurations common to the first embodiment will be omitted, and the following description will focus on the differences.

The processing machine 1 according to this embodiment includes a moving mechanism 60 that moves the measuring section 30 in the vertical direction. The moving mechanism 60 mainly includes a sensor bracket 61, a servo motor 65, a holding cylinder 68, and a post 70.

The sensor bracket 61 holds the measuring section 30. In this embodiment, a cylinder 39 including a piston rod 37 is fixed to a sensor bracket 61 , and the measuring section 30 is held by the sensor bracket 61 via the cylinder 39 and the cylinder bracket 36 .

The sensor bracket 61 is configured to be movable in the vertical direction along a guide member 71 attached to the post 70 and extending in the vertical direction. A rack 62 is provided at the right end of the sensor bracket 61 along the vertical direction.

The servo motor 65 is an actuator that moves the sensor bracket 61 in the vertical direction. Servo motor 65 is attached to post 70. A pinion gear 66 is provided at the tip of the motor shaft of the servo motor 65. This pinion gear 66 is meshed with a rack 62 installed at the end of the sensor bracket 61. When the pinion gear 66 of the servo motor 65 rotates, the sensor bracket 61 including the rack 62 moves in the vertical direction. In conjunction with the movement of the sensor bracket 61, the measuring section 30 also moves in the vertical direction.

The holding cylinder 68 is fixed to the post 70. The holding cylinder 68 is a hydraulic or pneumatic cylinder. When the piston rod 68a of the holding cylinder 68 is extended, the sensor bracket 61 is held between the piston rod 68a and the fixed plate 69. Thereby, the sensor bracket 61 can be fixed. Fixed plate 69 is fixed to post 70.

Although the sensor bracket 61 receives a downward force due to its own weight, the downward movement can be restricted by a brake function built into the servo motor 65. However, since there is a gap corresponding to the backlash, the sensor bracket 61 vibrates in the vertical direction due to vibrations during conveyance of the material W. Therefore, in the measuring section 30 that performs measurements by irradiating a laser beam, the measurement accuracy may be reduced due to vibration.

Therefore, the moving mechanism 60 includes a holding cylinder 68 that fixes the sensor bracket 61 in order to suppress the vibration of the sensor bracket 61. Since the sensor 35 of the measurement unit 30 is lightweight, it is easily vibrated, and minute vibrations may lead to measurement errors. By holding the position of the sensor bracket 61 in a positioned state using the holding cylinder 68, the measurement unit 30 can be kept stationary. This makes it possible to suppress the occurrence of measurement errors due to vibration.

The post 70 is attached to the base 2 of the processing machine 1. The lower end of the post 70 is formed into a plate shape, and is placed in surface contact with the base 2 of the processing machine 1. The post 70 includes a flat portion 70a that extends linearly in the vertical direction. The above-mentioned guide member 71 is arranged on this plane portion 70a.

The post 70 is a member on which the measuring section 30 is mounted via the sensor bracket 61. Therefore, in order to suppress the vibration generated in the base 2 of the processing machine 1 from being transmitted to the measuring section 30, it is preferable to attach the post 70 via a vibration damping material 73. The damping material 73 is a member that absorbs vibrations, and is made of resin, for example. The damping material 73 is made of, for example, urethane foam.

Next, with reference to FIG. 7, the operation of the measuring section 30 will be explained. FIG. 7 is a flowchart showing the operation of the measuring section. The processing shown in this flowchart is executed by the control device 100.

First, in step S10, the control device 100 reads information on the material W. The information on the material W is information for determining the vertical position of the measuring section 30 when measuring the material W, and includes the shape and size. Furthermore, if the material W has been processed in advance, the information on the material W includes information on the processing position. Information on the material W is set in advance in a memory or the like.

The information on the material W may include information on processing positions by the processing units 10 and 11. Information on the processing positions by the processing units 10 and 11 can be used as information for vertical positioning of the measurement unit 30, which is disposed downstream of the pinch roller 21 on the carry-out side in the conveyance direction Fd.

In step S11, the control device 100 calculates target coordinates based on material information. The target coordinates indicate the optimum position in the vertical direction for the measurement unit 30 to measure the material W. For example, the control device 100 stores in advance a map or a calculation formula in which material information and target coordinates are associated with each other, and calculates the target coordinates from the material information.

In step S12, the control device 100 drives the servo motor 65 to position the measurement unit 30 at the target coordinates.

In step S13, the control device 100 operates the holding cylinder 68 to fix the sensor bracket 61.

In step S14, the control device 100 operates the cylinder 39 to bring the first and second rollers 32 and 33 of the measuring section 30 into contact with the material W.

Through the steps described above, the control device 100 irradiates a laser beam from the measurement unit 30 to measure the amount of material W transported when the material W is transported.

As described above, according to the present embodiment, the processing machine 1 includes the moving mechanism 60 that moves the sensor 35 in the vertical direction along the measurement surface of the material W that is irradiated with the laser beam. There are various types of materials W handled by the processing machine 1. For example, in the case of a square steel pipe called a column, the material W has a rounded shape at its upper and lower ends. Moreover, holes etc. may exist on the measurement surface of the material W due to machining. Therefore, in order for the sensor 35 of the measurement unit 30 to accurately measure, it is necessary to irradiate a laser beam to an appropriate position on the material W. In this regard, according to the processing machine 1 according to the present embodiment, the vertical position of the sensor 35 can be adjusted by the moving mechanism 60. Thereby, the position of the measuring section 30 can be switched to a position suitable for measurement for each material, so that the measurement by the measuring section 30 can be performed with high accuracy.

Further, in this embodiment, the moving mechanism 60 is provided to the base 2 of the processing machine 1 via a damping material 73. According to this configuration, it is possible to suppress vibrations transmitted from the processing machine 1 to the measuring section 30, so it is possible to suppress minute vibrations from leading to measurement errors.

Furthermore, in this embodiment, the processing machine 1 further includes a control device 100 that controls the moving mechanism 60 based on information on the material W to adjust the vertical position of the sensor 35. According to this configuration, the vertical position of the sensor 35 can be adjusted in consideration of the information on the material W. Thereby, the sensor 35 can be placed at an appropriate position with respect to the material W, so that the measurement by the sensor 35 can be performed with high accuracy.

(Third embodiment)
Hereinafter, with reference to FIG. 8, a processing machine 1 according to a third embodiment will be described. Hereinafter, the feature of the third embodiment lies in the measuring section 50 that measures the conveyance amount of the material W. Here, FIG. 8 is an explanatory diagram showing the configuration of the processing machine 1 according to the third embodiment. A description of the configurations common to the first embodiment will be omitted, and the following description will focus on the differences.

In the third embodiment, the measuring unit 50 includes a sensor 51 that irradiates a laser beam serving as a detection light and measures the amount of conveyance of the material W, but ensures a distance Ls between the sensor 51 and the material W. It does not have dedicated first and second rollers for this purpose. For this reason, the measuring unit 50 uses the pinch rollers 19 and 21 on the carry-in side and the carry-out side to ensure the distance Ls between the sensor 51 and the material W. That is, the first and second contact members that contact the material W are composed of pinch rollers 19 and 21 on the carry-in side and the carry-out side.

The sensor 51 is arranged between the pinch roller 19 on the carry-in side and the pinch roller 21 on the carry-out side. At this time, the sensor 51 is arranged at a relative reference position P3 determined from the center position P1 of the pinch roller 19 on the carry-in side and the center position P2 of the pinch roller 21 on the carry-out side. , the pinch roller 21 on the unloading side, and the sensor 51 are also maintained relative to each other. Since such a positional relationship is maintained, the distance Ls between the sensor 51 and the common tangent line Ct between the carry-in side pinch roller 19 and the carry-out side pinch roller 21 is kept constant.

The carry-in side of the material W is pressed by a carry-in side pinch roller 19 and a carry-in side pressure roller 18. Similarly, the discharge side of the material W is pressed by a pinch roller 21 on the discharge side and a pressure roller 20 on the discharge side. Thereby, the bending of the material W is corrected between the pinch roller 19 and pressure roller 18 on the carry-in side and the pinch roller 21 and pressure roller 20 on the carry-out side. Therefore, the side surface of the material W extends linearly along the common tangent line Ct between the carry-in side pinch roller 19 and the carry-out side pinch roller 21.

According to this configuration, the relative positional relationship between the carry-in side pinch roller 19, the carry-out side pinch roller 21, and the sensor 51 is always maintained. Thereby, the sensor 51 can irradiate the material W with a laser beam at right angles from a position separated from the material W by a predetermined distance Ls. Therefore, the measurement unit 50 can accurately measure the conveyance amount of the material W to be conveyed, although it has a simple configuration.

In particular, the bending of the material W is corrected between the pinch rollers 19 and 21 on the carry-in side and the carry-out side, and the straight state is maintained. Therefore, the distance Ls from the sensor 51 to the material W is always maintained constant. Therefore, the measurement unit 50 can accurately measure the amount of conveyed material W to be conveyed.

In order to avoid interference between the right processing section 11 and the sensor 51, the sensor 51 is configured to be movable by a drive device, so that the right processing section 11 faces the material W during processing, and the sensor 51 faces the material W during conveyance. You can also switch between each location so that you are facing the However, the sensor 51 needs to be placed at a relative reference position P3 determined from the center position P1 of the pinch roller 19 on the carry-in side and the center position P2 of the pinch roller 21 on the carry-out side. The positional relationship only needs to be satisfied at least when the material W is transported.

In addition, in the embodiment mentioned above, the drilling machine was illustrated as the processing machine 1. However, the processing machine 1 of this embodiment may be a band saw machine or a circular saw machine in addition to the drilling machine, and can broadly include a cutting machine that performs a cutting process on the transported material.

Moreover, in this embodiment, a Doppler laser velocimeter is illustrated as the sensors 35 and 51 that measure the conveyance amount. However, the sensors 35 and 51 can be widely applied with a configuration in which the conveyance amount is measured by irradiating the material W with detection light. For example, the sensors 35 and 51 may be configured to take images at regular intervals and measure the distance by determining the degree of coincidence of the materials W shown in the time-series images. In such a configuration, the distance Ls from the sensors 35 and 51 to the common tangent line Ct (material W) is based on the photographing position of the camera that photographs the image.

In the first and second embodiments described above, the sensor 35 is arranged between the first roller 32 and the second roller 33 in the conveyance direction Fd of the material W. However, the sensor 35 only needs to be arranged so as to irradiate the detection light from a position separated by a predetermined distance Ls from the common tangent line Ct of the first roller 32 and the second roller 33, and It is not necessary to arrange it between the second roller 33 and the second roller 33.

FIG. 9 is an explanatory diagram showing areas where sensors can be placed. Hereinafter, the area A in which the sensor 35 can be placed will be described using the first embodiment as an example. As described in the first embodiment, the total length of the material W is sufficiently long compared to the distance between the first roller 32 and the second roller 33. Therefore, even if the material W is curved, the side surface of the material W is generally a straight line between the first roller 32 and the second roller 33, and the side surface of the material W is aligned with the common tangent line Ct. extends in a straight line along the Therefore, the distance Ls between the sensor 35 and the material W is kept constant. Further, even if a bend occurs in the material W such that a part of the material W deviates from the common tangent line Ct, when viewed between the first roller 32 and the second roller 33, The deviation width of the material W is small. Therefore, even if the material W deviates from the common tangent line Ct, the material W falls within the range of the focal depth Df of the laser beam irradiated from the sensor 35. Therefore, if the sensor 35 is between the first roller 32 and the second roller 33, the sensor 35 can accurately measure the amount of conveyed material W.

Moreover, since the bending of the material W is sufficiently small compared to the total length of the material W, even if the bending is outside the range between the first roller 32 and the second roller 33, it is far away from the first roller 32 and the second roller 33. If they do not separate, the deviation between the material W and the common tangent Ct is sufficiently small. If the deviation of the material W from the common tangent line Ct is within a small range, the material W will fall within the range of the focal depth Df of the laser beam. Therefore, even if the sensor 35 is located outside the range between the first roller 32 and the second roller 33, the sensor 35 can accurately measure the conveyance amount of the material W to be conveyed.

In this way, the sensor 35 only needs to be disposed in the region A where the measurement surface of the material W, which is irradiated with the laser beam from the sensor 35, is included within the focal depth Df of the laser beam. Thereby, even if the material W deviates from the common tangent line Ct due to the bending of the material W, the deviation width of the material W in the area A will fall within the range of the focal depth Df of the laser beam. As a result, the sensor 35 can accurately measure the amount of transported material W. This area A is determined from information such as the depth of focus Df of the laser beam irradiated from the sensor 35, the maximum length of the material W used in the processing machine 1, and the amount of bending of the material W allowed during manufacturing.

The arrangement of the sensors in area A is also applicable to the modification of the first embodiment shown in FIG. That is, the sensor 40c only needs to irradiate the laser beam from a position that is a predetermined distance Ls away from the common tangent of the first and second rollers 40a and 40b that constitute the pressure roller 40, and the sensor 40c It may be located outside between the first roller 40a and the second roller 40b.

FIG. 10 is an explanatory diagram showing a modification of the measuring section included in the processing machine according to the third embodiment. As shown in FIG. 10, the arrangement of the sensors in area A may be applied to the third embodiment described above. That is, the sensor 51 only needs to irradiate the laser beam from a position that is a predetermined distance Ls away from the common tangent line Ct between the pinch roller 19 on the carry-in side and the pinch roller 21 on the carry-out side. It may be located outside the pinch roller 19 on the side and the pinch roller 21 on the carry-out side. In the example shown in FIG. 10, a measurement unit 50 including a sensor 51 is provided upstream of the pinch roller 19 on the carry-in side.

Further, as shown in FIG. 10, the processing machine 1 may include a moving mechanism 60 that moves the measuring section 50 in the vertical direction. The moving mechanism 60 mainly includes a sensor bracket 61, a servo motor 65, a holding cylinder (not shown), and a post 70, and details of the moving mechanism 60 are shown in the second embodiment. It is similar to However, the moving mechanism 60 may be applied to the measurement unit 50 provided between the pinch roller 19 on the carry-in side and the pinch roller 21 on the carry-out side.

Although this embodiment has been described as described above, it should not be understood that the discussion and drawings that form a part of this embodiment limit this embodiment. Various alternative embodiments, implementations, and operational techniques will be apparent to those skilled in the art from this embodiment.

1 Processing machine 10, 11 Processing section 10a, 11a Drill 12, 14 Movable vise 13, 15 Fixed vise 18, 20 Pressure roller (first contact member, second contact member)
19, 21 pinch roller 30 measuring section 31 holding member 32 first roller (first contact member)
33 Second roller (second contact member)
35 Sensor 36 Cylinder bracket 27 Piston rod (pressing member)
38 Pin 40, 42 Pressure roller (measuring part)
40a First roller (first contact member)
40b Second roller (second contact member)
50 Measuring part 51 Sensor 60 Moving mechanism 61 Sensor bracket 65 Servo motor 68 Holding cylinder 70 Post 73 Damping material

Claims (15)

a processing section that processes the material transported along the transport direction;
A measurement unit that measures the amount of the material to be transported,
The measurement unit includes:
a first contact member that contacts the material being conveyed;
a second contact member that is provided downstream of the first contact member in the transport direction and contacts the material being transported;
a sensor that measures the conveyance amount by irradiating the material with detection light from a direction perpendicular to the conveyance direction,
The sensor is
irradiating the detection light from a position separated by a predetermined distance with respect to a common tangent of the first contact member and the second contact member ;
The measurement unit includes:
a holding member that holds the first contact member and the second contact member and holds the sensor at a position separated by the predetermined distance;
The method further includes a pressing member that causes the first contact member and the second contact member to contact the material by pressing the holding member toward the material.
Processing machine. The processing machine according to claim 1 , wherein the holding member is rotatably connected to the pressing member. The first contact member is
a first roller rotatably supported by the holding member;
The second contact member is
The processing machine according to claim 1 , wherein the processing machine is a second roller rotatably supported by the holding member. an input-side pinch roller that is provided upstream of the processing section in the conveyance direction and is rotationally driven;
a pressure roller on the carry-in side that is provided at a position facing the pinch roller on the carry-in side across the material, and pinches the material between the pinch roller on the carry-in side;
a pinch roller on the carry-out side that is provided downstream of the processing section in the conveyance direction and is rotationally driven;
further comprising: a pressure roller on the carry-out side that is provided at a position facing the pinch roller on the carry-out side across the material, and pinches the material between the pinch roller on the carry-out side;
The measurement unit includes:
The processing according to any one of claims 1 to 3 , wherein the processing member is provided at least one of an upstream side of the carry-in side pinch roller in the conveyance direction and a downstream side of the carry-out side pinch roller in the conveyance direction. Machine. an input-side pinch roller that is provided upstream of the processing section in the conveyance direction and is rotationally driven;
Further, a pressure roller on the carry-in side consisting of a pair of rollers is provided at a position facing the pinch roller on the carry-in side across the material, and pinches the material between the pinch rollers on the carry-in side. have,
The first and second contact members of the measuring section are
The processing machine according to claim 1 , wherein the processing machine is constituted by the pair of rollers forming the pressure roller on the carry-in side. a pinch roller on the carry-out side that is provided downstream of the processing section in the conveyance direction and is rotationally driven;
Further, a pressure roller on the carry-out side, which is a pair of rollers, is provided at a position facing the pinch roller on the carry-out side across the material, and pinches the material between the pinch roller on the carry-out side. have,
The first and second contact members of the measuring section are
The processing machine according to claim 1 or 5, wherein the processing machine is constituted by the pair of rollers that constitute the pressure roller on the carry-out side. a processing section that processes the material transported along the transport direction;
a measurement unit that measures the amount of the material being transported;
an input-side pressure roller provided upstream of the processing section in the conveyance direction;
a pressure roller on a discharge side provided downstream of the processing section in the conveyance direction;
a pinch roller on the carry-in side that is provided at a position facing the pressure roller on the carry-in side across the material, pinches the material between the pressure roller on the carry-in side, and is rotationally driven;
a pinch roller on the carry-out side that is provided at a position facing the pressure roller on the carry-out side across the material, pinches the material between the pressure roller on the carry-out side, and is rotationally driven ; Prepare,
The measuring section includes:
a first contact member that contacts the material being conveyed;
a second contact member that is provided downstream of the first contact member in the transport direction and contacts the material being transported;
a sensor that measures the conveyance amount by irradiating the material with detection light from a direction perpendicular to the conveyance direction,
The sensor is
irradiating the detection light from a position separated by a predetermined distance with respect to a common tangent of the first contact member and the second contact member;
The first contact member is
Consisting of the carry-in side pinch roller,
The second contact member is
It is constituted by the pinch roller on the unloading side.
Processing machine. The processing machine according to claim 1 , wherein the sensor is provided between the first contact member and the second contact member. The sensor is arranged in a region where the measurement surface of the material to which the detection light is irradiated from the sensor is included within the depth of focus of the detection light. processing machine. The processing machine according to claim 1 , further comprising a moving mechanism that moves the sensor in an up-down direction along a measurement surface of the material that is irradiated with the detection light. The processing machine according to claim 10 , wherein the moving mechanism is provided to a base of the processing machine via a damping material. The processing machine according to claim 10 , further comprising a control device that controls the moving mechanism based on information on the material to adjust the vertical position of the sensor. a processing section that processes the material transported along the transport direction;
A measurement unit that measures the amount of the material to be transported,
The measurement unit includes:
a first contact member that contacts the material being conveyed;
a second contact member that is provided downstream of the first contact member in the transport direction and contacts the material being transported;
a sensor that measures the conveyance amount by irradiating the material with detection light from a direction perpendicular to the conveyance direction;
a moving mechanism that moves the sensor up and down along the measurement surface of the material that is irradiated with the detection light;
The sensor is
irradiating the detection light from a position separated by a predetermined distance with respect to a common tangent of the first contact member and the second contact member;
Processing machine. The moving mechanism is provided to the base of the processing machine via a damping material.
The processing machine according to claim 13. The method further includes a control device that controls the moving mechanism based on information on the material to adjust the vertical position of the sensor.
The processing machine according to claim 13.

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