JP7160277B2 - processing equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a processing device for cutting wood or the like.

As a conventional processing device, multiple types of cutting members (for example, cutting tools such as cutters, awls, circular saws, and router bits) are stocked (arranged) in a preset storage area, and the cutting members suitable for the content of processing are processed. 2. Description of the Related Art There is known a device that processes a material (for example, wood) while replacing a plurality of types of cutting members by attaching to the device. This processing apparatus is used, for example, as part of a lumber precut processing apparatus that performs precut processing of lumber used for wooden houses (see Patent Document 1).

JP 2005-178172 A

In many conventional processing devices, the cutting member attached to the processing device rotates around one axis to process the material. is limited. For this reason, machining is performed while exchanging cutting members according to the position, size, and shape that require machining. There is a problem that the material may be wasted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a processing apparatus that can easily avoid a situation in which a material is processed into a shape different from the desired product by a cutting member. It is intended to

In order to achieve this object, the processing apparatus according to claim 1 is provided with a mounted portion to which a cutting member having a blade capable of cutting a material by rotation is attached, and the cutting member is rotated to cut a product. The material can be processed into a shape according to the processing data of , and a plurality of types of cutting members that differ in at least one of the size or shape of the cutting member can be replaced according to the processing data. A detection means capable of detecting whether or not the cutting member is a predetermined cutting member corresponding to the processing of the processing data, and whether or not the cutting member is the predetermined cutting member based on the detection result of the detection means. and a low-speed rotation control means for rotating the cutting member at a speed lower than a predetermined rotational speed when cutting the material with the predetermined cutting member, wherein the plurality of The type of cutting member includes at least a cutting member in which the distance from the center of rotation to the outer edge of the blade portion varies in the circumferential direction, and the detection means detects that the distance from the center of rotation of the cutting member to the outer edge of the blade portion varies. The predetermined cutting member is attached to the attached portion, and is rotated at the low speed by the low-speed rotation control means. When the cutting member is rotated, the state in which the cutting member is positioned and the state in which the cutting member is not positioned are alternately detected by the detecting means .

The processing apparatus according to claim 2 comprises a mounting portion to which a cutting member having a blade portion capable of cutting a material by rotation is attached, and the cutting member is rotated to form a shape according to processing data of a product. A processing apparatus capable of processing the material and configured to be able to replace a plurality of types of cutting members having at least one of different sizes or shapes of the cutting members in accordance with the processing data, wherein the processing data Detecting means capable of detecting whether or not the cutting member is a predetermined cutting member corresponding to the machining of , and based on the detection result of the detecting means, different control can be executed depending on whether or not the cutting member is the predetermined cutting member. and a combination of a drill member capable of forming a hole into which a cylindrical pin can be inserted and a saw member capable of forming a gap into which a plate-like portion can be inserted, as the plurality of types of cutting members. is configured to be replaceable in correspondence with the processing data, and as the attached portion, a drill attachment portion to which the drill member is attached and a saw attachment portion to which the saw member is attached are provided, and the drill member and , and the saw member are provided with detection means, respectively, and the control means detects a product corresponding to processing data in which the predetermined cutting member is different from that of a finished product in a situation in which a plurality of products are processed. When starting the machining, based on the detection result of the detection means, both the drill mounting portion and the saw mounting portion are equipped with the drill member as a predetermined cutting member corresponding to the processing data The detecting means detects whether or not the saw member is attached or whether at least one of the drill member and the saw member does not correspond to the predetermined cutting member, and the detection means determines whether the saw member is attached or not. It is characterized by being configured to be able to execute control.

According to the processing apparatus of claims 1 and 2 , it is possible to proceed with different controls according to whether or not the cutting member is a predetermined cutting member based on the detection result of the detection means. For example, if the specified cutting member is not attached to the attached part, the processing of the material by the wrong cutting member is restricted, and only when the specified cutting member is attached to the attached part, the material is processed. Machining is acceptable.

Here, the blade portion includes a processing portion (cutting edge portion) that contacts and processes the material, and a portion that transmits the driving force to the processing portion (the main body of the blade of the circular saw and the drill bit). A portion combined with a shaft portion) is exemplified.

According to the processing apparatus of the present invention , there is an effect that it is possible to easily avoid a situation in which the material is processed into a shape different from the desired product by the cutting member.

Further, according to the processing apparatus of claim 1 , by detecting the presence or absence of a cutting member for a portion where the distance from the center of rotation to the outer edge of the blade varies, it is possible to determine whether the cutting member is a predetermined cutting member. There is an effect that it is possible to detect whether or not it is a predetermined cutting member at low cost using a contact type or non-contact type sensor.

In addition, by detecting the undulating portion of the outer edge of the blade (for example, the portion of the blade bag corresponding to between the teeth) under the control of the low-speed rotation control means, it is possible to use an excessively high-precision sensor. There is an effect that it is possible to detect whether or not the cutting member is a predetermined cutting member at low cost.

Moreover, according to the processing apparatus of claim 2 , since both the drill member and the saw member are confirmed based on the processing data, there is an effect that it is possible to easily manufacture a product suitable for the processing data. .

It is a block diagram of a lumber precut processing apparatus. It is a figure explaining an example of the product processed by a lumber precut processing apparatus. It is the figure which showed the cutting apparatus. It is explanatory drawing of cutting using a slit blade. FIG. 4 is a diagram showing an initial position of a first slit blade and a blade portion detection position; FIG. 10 is a diagram showing the initial position of the second slit blade and the blade portion detection position; It is a figure which shows a hole formation processing apparatus. FIG. 8A is a diagram showing irradiation of a large-diameter circular saw with measurement light, and FIG. 8B is a diagram showing irradiation of a small-diameter circular saw with measurement light when a slit blade corresponding to machining data is attached; and (C) are diagrams showing the amount of received return light. When a slit blade having a smaller diameter than the machining data is attached, (A) is a diagram showing irradiation of the measurement light to the large-diameter circular saw, and (B) is a diagram showing irradiation of the measurement light to the small-diameter circular saw. , and (C) is a diagram showing the amount of received return light. When a slit blade having a larger diameter than the machining data is attached, (A) is a diagram showing irradiation of the measurement light to the large-diameter circular saw, and (B) is a diagram showing irradiation of the measurement light to the small-diameter circular saw. , and (C) is a diagram showing the amount of received return light. It is a figure which shows the relationship between the outer edge of an auger blade and measurement light. FIG. 8A is a diagram showing the irradiation of measurement light to the drilling blade when the drilling blade corresponding to the processing data is attached, and FIG. 8B is a diagram showing the amount of received light. FIG. 8A is a diagram showing the irradiation of the measuring light to the drilling blade, and FIG. 8B is a diagram showing the amount of received light when a drilling blade having a smaller diameter than the processing data is attached. FIG. 8A is a diagram showing the irradiation of the measuring light to the drilling blade, and FIG. 8B is a diagram showing the amount of received light when a drilling blade having a larger diameter than the processing data is attached. FIG. 10 is an explanatory diagram of a case in which measurement light is applied to a plurality of locations; It is explanatory drawing in the case of irradiating the light of a large spot as measurement light.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of a wood precut processing device 1 as one embodiment, and FIG. 2 is a conceptual diagram explaining processing performed by the wood precut processing device 1 of FIG.

The lumber precut processing device 1 is a device for processing lumber such as pillars, beams, and handle materials used in wooden houses. Machining of wood is performed using the processing data obtained. For example, as shown in FIG. 2, this lumber precut processing apparatus 1 is used when manufacturing a product to which a hardware construction method is applied by processing a lumber MK. That is, in the lumber precut processing apparatus 1, as cutting processing, a slit processing is performed to form a concave portion 95 for mounting a joint metal fitting 91 in the lumber MK, and a circular pipe fitting 92 such as a tenon pipe, a bolt, or a pin is inserted. For example, hole processing is performed to form a hole or a hole (hereinafter collectively referred to as a hole 96) for the purpose.

As shown in FIG. 3, the lumber precutting device 1 includes, as part of the cutting device 7, a slitting device 7A and a hole processing device 7B. The slit processing device 7A is a device having a cutting member that performs processing using a disk-shaped outer peripheral portion, and performs slit processing using a slit blade 20 as an example of the cutting member. The hole processing device 7B is a device provided with a cutting member that performs processing by means of a cylindrical outer peripheral surface portion.
is used to perform processing for forming holes. The wood MK is conveyed to the slit processing device 7A and the hole processing device 7B via the conveying device 9, and slit processing and hole processing are performed as necessary.

The cutting device 7 is operated by electrical control of a motor or the like or control of an electromagnetic valve through which fluid such as hydraulic pressure or air pressure passes. As the cutting device 7, a case where a cutting member such as the slit blade 20 and the drill blade 30 is rotated and rotated and moved to process the wood MK will be described as an example.

The wood pre-cutting device 1 is not limited to the configuration using the slitting device 7A and the hole processing device 7B illustrated as the embodiment, and may be configured differently, such as using another cutting device. For example, the processing of the wood MK by the cutting device 7 may involve movement of the wood MK and rotation of the wood MK. After processing one side (for example, the top side), the wood MK may be turned upside down and the opposite side may be processed. In addition, the movement and rotation (orientation change) of the cutting member by the cutting device 7 may be performed based on one axis, two axes, or three axes. may be used to configure the cutting device 7, and the cutting member may be configured to be movable in three orthogonal axial directions and to be rotatable about each axial direction. In addition, as the cutting device 7, there is no need to separately provide a mechanism for rotating and moving the slit blade 20 and the drill blade 30. may be replaced and attached. In addition, two or more cutting members may be rotatably attached to one cutting device so that a plurality of locations (for example, the upper surface side and the lower surface side) can be processed simultaneously, and a plurality of slit blades 20 may be attached to enable simultaneous machining, or the slit blade 20 and the drill edge 30 may be attached to perform machining. Also, the order of processing may be changed, for example, the slit processing by the slit processing device 7A may be performed after the hole processing by the hole processing device 7B.

The conveying device 9 is a device that transfers the wood MK before processing to a processing position where it can be processed by each cutting member attached to the cutting device 7, and transfers the wood from the processing position after processing is completed. . The structure of the conveying device 9 is not limited, and a known structure can be used. For example, a roller system combining sleepers and guide rails, a belt conveyor system using a belt, and the like are preferably used.

The control device 2 is a device for controlling the wood precut processing device 1, and includes an operation unit 4 operated by a worker, an input unit 5 for inputting processing data of wood generated by designing a wooden house (for example, storage CD-ROM (Compact Disc Read only memory) and USB (Universal Serial Bus) drive device capable of reading data as a medium), and a display unit 6 for informing the operator of current settings, processing status, etc. are provided. . The control device 2 controls each part including the cutting device 7 and the conveying device 9 so that the wood is processed in the order according to the operator's instruction based on the processing data input via the input unit 5. The operation is controlled to cause the wood precut processing device 1 to perform the necessary wood processing. The control device 2 includes a plurality of motors and air cylinders that generate driving force for a plurality of moving parts including cutting members (cutting tools) of the cutting device 7 and moving parts of the conveying device 9, and detects the positions of the moving parts. A large number of sensors and the like (not shown) are connected, and necessary wood processing control is executed by controlling the position and angle of the operating part by detecting the position of the sensor. The control device 2 may read CAD data generated by designing a wooden house, and the control device 2 may be provided with a function of generating wood processing data, and the control device 2 may generate processing data from the CAD data. good.

Processing of wood by the wood precut processing apparatus 1 is performed, for example, as follows. A control unit 3 of the control device 2 (see FIG. 1) stores processing schedule data input from the input unit 5 . This processing schedule data includes processing conditions including information such as processing dimensions and positions, the scheduled cutting number representing the number of wood MKs to be processed, and the processing order. Based on the processing conditions, the wood MK is cut by the planned cutting number under the predetermined processing conditions. The wood MK conveyed by the conveying device 9 is cut into a length corresponding to the product, and then conveyed to the slit processing device 7A, where the slit blade 20 performs slit processing.

As shown in FIG. 4, the slit blade 20 consists of two small-diameter cutters 23 having a smaller diameter and a wider width than the large-diameter circular saw 22 sandwiched between two large-diameter circular saws 22 . It has a 1-slit blade 21 and a second slit blade 24 in which two small-diameter cutters 25 are combined. The drive shaft 27 of the first slit blade 21 passes through the central holes 22C and 23C of the large-diameter circular saw 22 and the small-diameter cutter 23, and the outside of the large-diameter circular saw 22 is secured to the drive shaft 27 using a fixture 28. is fixed to The second slit blade 24 has the drive shaft 27 passed through the center hole 25C of the small diameter cutter 25 and the outer side of the small diameter cutter 25 is fixed to the drive shaft 27 using a fixture 29 . That is, the first slit blade 21 and the second slit blade 24 are fixed side by side on one drive shaft 27 .

The slit processing device 7A includes a rotation movement mechanism ( not shown). By moving and rotating the drive shaft 27, the rotating movement mechanism moves the first slit blade 21 and the second slit blade 24 to an arbitrary position, and moves the first slit blade 21 and the second slit blade 24. The direction of the slit blade 24 is changed. As a result, the cutting member can be arranged in a direction that requires cutting with respect to a portion of the wood MK that needs to be cut.

As described above, the U-shaped joint fitting 91 (see FIG. 2) may be fitted into the wood MK. 95A and two recesses 95B having a depth of D2 are formed on both sides of the recess of depth D1. The shape and size of the first slit blade 21 correspond to the shape and size of the joint fitting 91 . When manufacturing a product to which a joint fitting 91 corresponding to a shape and size different from the first slit blade 21 attached to the drive shaft 27 is attached, the first slit blade as a cutting member may be used as necessary. 21 exchanges are made. The slit processing device 7A may be configured to have one drive shaft 27 so that only one type of first slit blade 21 can be attached, or two or more types of second slit blades having different shapes and sizes. It may be configured to have two or more drive shafts 27 so that one slit blade 21 can be attached.

By combining the large-diameter circular saw 22 and the small-diameter cutter 23, the first slit blade 21 can simultaneously form both the recesses 95A and 95B having different widths and depths by one rotary cutting. The second slit blade 24 is used, for example, when it is desired to make the depth D1 of the recess 95A larger than the radius difference R3 between the large-diameter circular saw 22 and the small-diameter cutter 23 .

As shown in FIG. 5, when the first slit blade 21 is used, the drive shaft 27 moves in the vertical, horizontal, and front-rear directions, so that the outer diameter end of the first slit blade 21 moves toward the planned cutting portion of the wood MK. , and at the initial position (rotation start position) where the blade tip of the first slit blade 21 is separated from the end surface of the wood MK in the left and right direction by the separation distance WD. placed.

At this initial position, the rotation of the drive shaft 27 is started and the first slit blade 21 rotates. At this initial position, it may stop once, or it may continue to move without stopping.
stomach. After the start of rotation at the initial position, the wood MK is cut after the rotational speed reaches a predetermined cutting speed. Then, when the drive shaft 27 moves and rotates within the necessary range for slitting, and moves to the cutting end point to finish cutting the portion to be cut, the first slit blade 21 moves away from the wood MK to the end position. Move to When the first slit blade 21 leaves the wood MK, the rotation of the first slit blade 21 stops.

The case where the second slit blade 24 is used is the same as the first slit blade 21, and as shown in FIG. is started and cutting is performed. After cutting, the rotation of the second slit blade 24 stops after moving to the end position away from the wood MK.

In this manner, the slitting of the wood MK using the first slit blade 21 and the second slit blade 24 is performed. Slitting is performed on another part of the same wood MK or another wood MK by the same procedure as the above-described procedure or by processing using either the first slit blade 21 or the second slit blade 24. be done.

The wood MK that has undergone slit processing is transported by the transport device 9 to the hole processing device 7B. As shown in FIGS. 7A and 7B, the drill bit 30 has a long cylindrical shape as a whole, and a spiral groove 31 is formed on the surface for discharging cut chips. A mounting portion (not shown) for mounting the drill blade 30 is installed in the driving portion 35, and the drill blade 30 is mounted to the mounting portion. When the wood MK to be subjected to the hole forming process is placed under the drill blade 30, that is, when the wood MK is placed at the correct position in the left-right and front-back directions with respect to the portion to be cut, the drive unit 35 moves downward, The drilling blade 30 is moved to the initial position separated from the end face of the wood MK in the vertical direction by the separation distance WD. The drive unit 35 moves downward while rotating the drill blade 30, and cuts an arbitrary position of the wood MK to form a hole 96, which is a hole forming process.

In this manner, the lumber pre-cutting device 1 uses the slitting device 7A and the hole forming device 7B to perform cutting including the necessary slitting and hole forming on the lumber MK to manufacture the product. configured to be

When the control unit 3 of the control device 2 (see FIG. 1) executes cutting corresponding to the planned number of pieces of wood MK to be cut under processing conditions that allow processing with a common cutting member, such as one house, another processing plan is executed. Based on the data, the wood MK is cut according to the following processing conditions.

Here, the size of the recesses 95 (95A, 95B) to be formed varies depending on the joint fitting 91 used. For this reason, as the large-diameter circular saw 22 and the small-diameter cutters 23 and 25 used as the first slit blade 21 and the second slit blade 24, a plurality of types of sizes are prepared, respectively. , 95B, and a large diameter circular saw 22 and small diameter cutters 23 and 25 are attached to a drive shaft 27. The same applies to the drill blade 30, and the drill blade 30 is selected according to the size of the hole 96 to be formed and attached to a mounting portion (not shown). The attachment to the attachment portion may be performed manually by an operator, or the cutting device 7 may be provided with a storage device capable of storing a plurality of cutting members, and the control device 2 may be controlled from the storage device. may be performed by

When the machining conditions change, one or all of the cutting members (the first slit blade 21, the second slit blade 24, and the drill blade 30) attached to the cutting device 7 must be reattached. may not be. For this reason, in the wood precut processing device 1, when the cutting processing is completed by the planned number of cuttings under one processing condition under the control of the control unit 3 in the control device 2, the cutting processing is stopped, and the display unit 6 displays The cutting material used for
A warning is displayed to indicate that the Then, when a start button (not shown) displayed on the display unit 6 is pressed, the wood precutting device 1 is released from the stopped state, and cutting is started based on the new processing conditions.

However, if the worker attaches the wrong cutting member, misplaces the cutting member in the storage device, or forgets to replace one of the cutting members, the processing conditions for the wood MK are different. Cutting work may be applied. Therefore, when starting cutting under new processing conditions, the applicant of the present application uses a detection device 8 (see FIG. 1) to determine whether or not a correct cutting member suitable for the processing conditions is attached. did.

Specifically, in the slit processing device 7A, when the correct slit blade (first slit blade 21 or second slit blade 24) is attached, the blade edge of the slit blade reaches the discrimination blade edge position TP, The slit blade is moved so that the slit blade is arranged at a determination position where the presence or absence of the blade portion can be detected by the detection device 8 . In the following description, a case in which the above-described initial position for processing is applied as the determination position will be described as an example. In this case, since the determination position changes according to the initial position at which cutting is started, the detection device 8 is configured to be movable separately from the rotation drive mechanism of the slit blade so that the blade portion of the slit blade is positioned at the determination position. Detecting device 8 can be moved to a position where it can be detected whether or not it is positioned at. As the discrimination position, a position fixed in advance may be set as the discrimination position irrespective of the initial position of the cutting process. For example, the detection device 8 may be fixedly attached to the frame of the cutting device 7, a dust cover, or the like.

As shown in FIG. 8, the discrimination position of the first slit blade 21 is the cutting edge of the first slit blade (the leftmost position of the outer peripheral line 220 connecting the outer edges of the first slit blade 21) in the left-right direction. It is assumed that the position has reached the position TP. In the front-rear direction, the determination position of the first slit blade 21 is the detection position (the position of the measurement light LB in FIG. Alternatively, the first slit blade 21 is positioned so that the blade bag 22A is positioned (see FIG. 8A).

Since the second slit blade 24 has a smaller outer diameter than the first slit blade 21, the discriminative position of the second slit blade 24 is located at the center where the drive shaft 27 is located compared to the discriminative position of the first slit blade 21. The hole 25C is located on the side (left side) closer to the discriminative cutting edge position TP. Note that the discriminating cutting edge position TP will be described by exemplifying a case where it is set to one position regardless of the type of cutting member in one cutting device 7, but it is set to a different position for each cutting member. may be set in two or more positions, such as

The detection device 8 is a device for detecting whether or not the blade portion of the slit blade is correctly positioned at the determination position, and determining whether or not the correct cutting member suitable for the processing conditions is attached. As the detection device 8, a so-called photoelectric sensor that receives and detects the emitted measurement light is preferably used. The type of light used is not limited, and laser light and LEDs (Light Emitting Diodes) are preferably used. Either a reflective type that irradiates the object with the measuring light and receives the return light or a transmissive type that receives the transmitted measuring light when the object does not exist may be used. As the slit processing device 7A, a case where a reflective sensor 8A is used as the detection device 8 will be described as an example.

As shown in FIG. 8, the large-diameter circular saw 22 of the first slit blade 21 has a depth width of about 2 to 4 cm where no blade is partially present in the outer peripheral portion from the outer peripheral line 22O to the inner peripheral line 22I. has a blade bag 22A. That is, the blade bags 22A are provided so as to be scattered along the outer circumference of the large-diameter circular saw 22. As shown in FIG. Similarly, the small-diameter cutter 25 of the second slit blade 24 also has a depth width of about 2 to 2 in the outer peripheral portion from the outer peripheral line 25O to the inner peripheral line 25I where no blade is partially present.
It has a blade bag 25A of about 4 cm.

The blade portion of the large-diameter circular saw 22 is composed of a portion of the blade positioned outside the inner peripheral line 22I. and a body portion for transmitting the

As shown in FIG. 8, the detection device 8 is arranged to detect the presence or absence of the blade bags 22A and 25A at the blade portion detection position SP set slightly to the right of the discrimination blade edge position TP. Thereby, it is possible to detect whether or not the blade portion of the large-diameter circular saw 22 exists at the blade portion detection position SP. The blade portion detection position SP can be set within the width range of the blade bags 22A and 25A (inner peripheral line 22I to outer peripheral line 22O, inner peripheral line 25I to outer peripheral line 25O). In the case of 0 cm, it should be set on the right side where the drive shaft 27 serving as the center of rotation is positioned by 0.5 to 4.0 cm, preferably 1.0 to 3.0 cm, from the discriminative cutting edge position TP. good too.

The distance from the discriminative cutting edge position TP to the cutting edge detection position SP (hereinafter also referred to as the offset distance) is set to a distance that differs depending on the detection result of the blade bag 22A in the large-diameter circular saws 22 of a plurality of sizes used. It is preferable that the blade bags 22A (the inner peripheral line 22I to the outer peripheral line 22O) do not overlap each other as the large-diameter circular saws 22 of a plurality of sizes. In addition, when there are two large-diameter circular saws 22 having the closest radii, if there is a blade bag 22A that overlaps, the offset distance in the larger large-diameter circular saw 22 is the radius of the two large-diameter circular saws 22 It is preferable to set it to about 1/2 which is the center (half) with respect to the difference between . The same applies to the small-diameter cutter 25. If there is another small-diameter cutter 25 having the closest radius, the offset distance may be set to about 1/2 of the difference between the radii. good.

The reflective sensor 8A is installed so as to irradiate the measuring light LB to the blade detection position SP. Detection of the blade bags 22A and 25A is performed while slowly rotating the slit blades (for example, about 5 to 20 rpm). The reflective sensor 8A receives the return light returned by reflection while emitting the measurement light LB, and detects the amount of received light.

When the blade bags 22A and 25A are positioned at the blade portion detection position SP, as shown in FIG. detected. On the other hand, when there is no blade, the measurement light LB is not reflected by the blade and the return light is not detected, so the amount of received return light increases or decreases. On the other hand, as shown in FIG. 9, since the diameter of the slit blade is small and the blade bags 22A and 25A are not positioned at the blade detection position SP, the measurement light LB passes through as it is. Then, the received amount of the returned light becomes almost zero. Further, as shown in FIG. 10, since the diameter of the slit blade is large, if the blade bags 22A and 25A are not positioned at the blade detection position SP, the measurement light LB is reflected inside the blade bags 22A and 25A. As shown in FIG. 10C, the amount of received return light remains high. In this manner, the control unit 3 (see FIG. 1) of the control device 2 can detect the presence or absence of the blade bags 22A and 25A from changes in the amount of light received by the reflective sensor 8A.

Next, detection of a cutting member using the detection device 8 in the hole processing device 7B (see FIG. 7) will be described. In the hole processing device 7B, the measuring light LB emitted from the emitting part 8Ba is received by the light receiving part 8Bb placed on the optical path LL of the measuring light LB, thereby determining whether or not the object exists on the optical path LL. A case in which the diameter of the cutting edge 30 is detected using a so-called transmissive sensor 8B will be described as an example.

As shown in FIG. 11, in the hole processing device 7B (see FIG. 7), the mounting
A drilling blade 30 is attached to a portion (not shown), and the driving portion 35 is configured to move the drilling blade 30 in the front-rear direction. Here, the outer end of the cutting edge 30 in the front or rear direction (perpendicular to the paper surface of FIG. 7) is defined as an outer edge OL. Further, the position of the outer edge OL assumed when the drilling blade 30 is attached as planned is defined as an assumed position PL, and the position where the cutting edge is detected by being irradiated with the measurement light LB in the front-rear direction is defined as a blade portion detection position SP. do. The distance DK from the central axis CP on which the drilling blade 30 rotates to the assumed position PL matches the planned radius HD, which is the radius of the drilling blade 30 to be attached. The position of the central axis CP corresponding to the initial position is determined so as to have the expected radius HD. That is, the drive unit 35 moves the drill bit 30 under the control of the control device 2 to a position on the central axis CP such that the assumed position PL is the outer edge OL of the drill bit 30 as an initial position.

The blade portion of the drill blade 30 is constituted by a shaft-shaped portion formed in a substantially cylindrical shape. and a connecting shaft portion 30B for transmitting driving force to the machining shaft portion 30A. The connecting shaft portion 30B is set to have an outer diameter slightly smaller than that of the processing shaft portion 30A, and is configured to be capable of processing the material with the outer diameter size of the processing shaft portion 30A.

Although the drill bit 30 has a cylindrical shape as a whole, it has a spiral groove 31 on its surface, and the portion where the spiral groove 31 is provided has a small outer diameter. For this reason, in order to detect the outer edge OL of the drill bit 30, when the measuring beam LB is irradiated to the blade portion detection position SP which is slightly inside the outer edge OL (on the side of the central axis CP), as shown in FIG. The measurement light LB is applied to the drill blade 30 at the portion without the spiral groove 31, and the measurement light LB is blocked. On the other hand, as shown in FIG. 11B, the measurement light LB is transmitted through the portion where the spiral groove 31 exists because the diameter is reduced by the amount of the groove. Therefore, in the lumber pre-cutting device 1, the presence or absence of the spiral groove 31 near the outer edge OL of the drill blade 30 is detected by the transmission sensor 8B while the drill blade 30 is slowly rotated.

Here, in the lumber pre-cut processing apparatus 1, as a position where the measurement light LB is irradiated to the drill blade 30, a case where the connection shaft portion 30B is irradiated will be described as an example, but the measurement light LB is not limited thereto. The shaft portion 30A may be irradiated, and in this case, the size of the blade portion of the drill bit 30 can be detected more accurately. In addition, the measurement light LB does not necessarily have to be in a direction perpendicular to the axis (rotational center line) of the drilling blade 30 (perpendicular to the paper surface of FIG. 11). It may be set in an inclined direction away from the vertical direction. For example, in FIG. 11, the measurement light LB is emitted in a downward direction from the back side of the paper to the front side, so that the amount of transmission of the measurement light LB (the amount of received light) is easily changed depending on the presence or absence of the spiral groove 31. can be

As shown in FIG. 12 , in the lumber precut processing apparatus 1 , the cutting edge detection position SP of the drill edge 30 is irradiated with the measurement light LB. The distance (offset distance) from the edge OL of the cutting edge detection position SP is set slightly (0.2 to 2.0 cm) inside the position where the edge OL of the drill edge 30 is arranged at the initial position.

FIG. 12A shows a state in which the assumed position PL and the outer edge OL match, that is, the correct drilling edge 30 is attached as assumed. At this time, the measurement light LB is irradiated to the drill blade 30 in the portion without the spiral groove 31 and is blocked, while the measurement light LB is transmitted (passes) through the drill blade 30 in the portion with the spiral groove 31 . Therefore, as shown in FIG. 12B, in the light-receiving portion 8Bb, the amount of light received is close to zero in the portion without the spiral groove 31, and the value of the amount of light received increases only in the portion with the spiral groove 31.

In FIG. 13A, when the outer edge OL is located inside the assumed position PL, that is,
It shows a state in which a drill bit 30 with a small diameter is attached. At this time, the measurement light LB passes through the drill blade 30 without being irradiated. Therefore, as shown in FIG. 13(B), the amount of light received by the light receiving portion 8Bb is a constant value or more regardless of the presence or absence of the spiral groove 31. That is, compared with the case where the correct drilling edge 30 is installed, when the drilling edge 30 with a smaller diameter is installed, the amount of received light equal to or greater than the predetermined passing value is detected.

FIG. 14A shows the case where the outer edge OL is located outside the assumed position PL, that is, the state where the drill bit 30 having a larger diameter than assumed is attached. At this time, the measurement light LB is applied to the drill blade 30 and blocked at the portion without the spiral groove 31 . Also, the measurement light LB is blocked by the drill blade 30 even at the portion where the spiral groove 31 is present. Therefore, as shown in FIG. 14B, in the light-receiving portion 8Bb, the value of the amount of light received is close to zero in the portion without the spiral groove 31, and the value of the amount of light received is close to zero even in the portion with the spiral groove 31. Alternatively, the value of the amount of received light is smaller than when the correct drilling edge 30 is attached. That is, compared to the case where the correct drilling edge 30 is installed, when the drilling edge 30 with a large diameter is installed, the maximum value of the amount of received light indicates zero or a small value.

The control unit 3 (see FIG. 1) of the control device 2 rotates the drill blade 30 by one or more rotations and monitors the transmission sensor 8B. It is determined that the diameter of 30 is larger than expected. Further, when the minimum value of the amount of received light is equal to or greater than the predetermined passage value, the control unit 3 determines that the diameter of the drill blade 30 is smaller than expected. Then, the control unit 3 determines that the diameter of the drill blade 30 is as expected when the maximum received light amount is equal to or greater than the predetermined pass value and the minimum received light amount is less than the predetermined pass value.

As described above, in the lumber pre-cutting device 1, the transmission type sensor 8B is used in the hole processing device 7B, and it is possible to determine whether or not the diameter of the drill blade 30 is as expected based on the amount of light received. .

Next, the overall flow of the lumber precut processing apparatus 1 will be described.

When the control unit 3 of the control device 2 in the wood precut processing device 1 completes the cutting processing by the planned cutting number, the control unit 3 stops the cutting processing, transitions to a stop state, and requests the display unit 6 to replace the cutting member. display the effect. After that, when the controller 3 recognizes that the operator has completed the replacement of the cutting member and instructed the operation part 4 to start the cutting process, the control part 3 returns to the initial position according to the processing conditions stored in advance. The drive shaft 27 and drive portion 35 are moved so that the cutting member is positioned. After that, while rotating the cutting member (the first slit blade 21 or the second slit blade 24 and the drill blade 30) used for cutting, the detection device 8 (the reflective sensor 8A and the transmissive sensor 8B) detects the cutting edge. The position SP is irradiated with the measurement light LB, and whether or not the correct cutting member is attached is determined based on the amount of light received.

Furthermore, if the control unit 3 determines that the correct cutting member is not attached to either or both of the slitting device 7A and the hole processing device 7B (see FIG. 3), the slit processing device 7A and the hole processing device 7B , the operation of the slit processing device 7A and the hole processing device 7B is prohibited (locked) without starting processing of the wood MK. In this locked stop state, the control unit 3 does not display a start button that enables the operator to start machining on the display unit 6, but displays an error on the display unit 6 so that the operator can encourage the exchange of

On the other hand, when the control unit 3 determines that the correct cutting members are attached to both the slitting device 7A and the hole processing device 7B, the control unit 3 displays on the display unit 6 that preparations for starting processing have been completed, and then displays a new cutting member. Start cutting based on the machining conditions.

Thus, in the wood precutting device 1, the detection device 8 confirms that the correct cutting members have been attached, and both the slitting device 7A and the hole processing device 7B confirm that the correct cutting members have been attached. In this case, the stopped state is canceled and cutting is performed under the next machining conditions.

As described above, the lumber precut processing apparatus 1 of the present embodiment is provided with the detection device 8 capable of detecting whether or not it is a predetermined cutting member corresponding to processing of processing data. If the cutting member is a predetermined cutting member, the start of the next cutting is permitted, and if the cutting member is not the predetermined cutting member, the start of the next cutting is prohibited. I tried to do it.

As a result, it is possible to detect whether or not a cutting member different from the machining conditions has been attached due to improper attachment or forgetting to replace the cutting member, and to take action according to the detection result.

In the lumber pre-cutting device 1, the cutting member is slowly rotated to stop at the determination position while the cutting member is in motion. to detect As a result, detection by the detection unit can be performed using a mechanism for operating the cutting member for cutting, and detection accuracy can be improved at low cost.

Further, the wood pre-cutting device 1 has, as a cutting member, a large-diameter circular saw 22 having a blade bag 22A in which the distance from the center of rotation to the outer edge of the blade varies in the circumferential direction. The presence or absence of the bag 22A is detected. As a cutting member, there is provided a drill blade 30 in which the distance from the center of rotation to the outer edge of the blade varies in the circumferential direction due to the presence of the spiral groove 31, and the transmission sensor 8B detects the presence or absence of the spiral groove 31. As a result, the presence or absence of the blade can be detected using the outermost portion of the blade, so it can be determined with high accuracy whether the cutting member meets the machining conditions.

It should be noted that the present invention is not limited to the above-described embodiments, and it can be easily inferred that various improvements and modifications are possible without departing from the gist of the present invention. In this case, each configuration described below may be applied to the above embodiment, and a plurality of configurations described below may be combined to the above embodiment may apply.

For example, slitting and hole forming used in the hardware construction method are performed as cutting, but the present invention is not limited to this. For example, the present invention can be applied to a wood pre-cutting device that performs only one of slit processing or hole forming processing, and a wood pre-cutting device that performs various cutting processes using cutting members of various shapes in the conventional method. In addition, the present invention can be applied not only to wood but also to a processing device that performs cutting processing on other materials. In short, it is possible to apply the present invention to a processing apparatus that performs cutting by exchanging a plurality of types of cutting members having different outer diameters according to processing conditions.

Further, the cutting member whose correctness is determined by the detection device 8 is not limited to the slit blade or the drilling blade 30, and other cutting members such as a counterbore cutter capable of forming a stepped hole (counterbore) with a different outer diameter may be used. You may make it discriminate|determine. For example, when a counterbore cutter is configured by arranging cylindrical drilling blades with different outer diameter sizes along one rotation center axis, two outer peripheral portions with different outer diameter sizes are irradiated with the measurement light LB. It may be determined whether the cutting member is correct or not.

Further, for example, as shown in FIG.
It is also possible to irradiate the measurement light LB at a plurality of locations by setting the measurement light LB at a plurality of locations. As a result, the portion where the spiral groove 31 of the drill bit 30 is located and the portion where it is not located can be detected without rotating the drill bit 30 . In this case, the spiral groove 31 can be detected without fail by moving the drill blade 30 larger than the interval of the spiral groove 31 while irradiating the measurement light LB. Also, while irradiating the measurement light LB, the drill blade 30 is moved so as to be larger than the width of the spiral groove 31 (vertical width of the recess), and the portion where the spiral groove 31 does not exist (the portion that does not transmit) is detected as the position of the outer edge OL. is also possible. Furthermore, as shown in FIG. 16, it is possible to use a photoelectric sensor with a large spot diameter as the detection section. Even in this case, the size of the cutting member can be determined by detecting a change in the amount of received return light. Alternatively, a contact sensor that directly touches the cutting member can be used.

Also, the drilling blade 30 is moved in a direction (front-rear direction) in which the outer diameter of the outer peripheral surface of the drilling blade 30 can be measured, and the measurement light LB is directed to the blade portion detection position SP near the outer edge OL in both the forward direction and the rearward direction. A scanning sensor capable of changing the direction of the measurement light LB may be used as the detection device 8 to determine whether the cutting member is correct or not by moving instead of in a stationary state, such as by irradiating. good. As a result, it is possible to directly measure the size of the cutting member. is attached.

Further, as the control of the control device 2, it may be determined whether the cutting member is correct through a plurality of stages. , whether or not there is a change in the amount of received light, the magnitude of the amount of received light, or the pattern of received light may be used to determine whether the cutting member is correct or not. In this case, when it is detected that the cutting member is not correct in the middle of the process, the control for judging the correctness of the cutting member is not continued until the end, and the control is stopped halfway to prompt replacement of the cutting member. is preferred.

Further, when judging whether or not the cutting member is correct, it is not necessary to use the detection device 8 using the measurement light LB. Correctness may be detected. For example, information such as a barcode is added to the cutting member, or a device (IC tag) that records different information for each type of cutting member and can receive radio waves and output information is attached to the cutting member. A reading device for reading information may be used as the detection device 8 .

In the wood precut processing device 1, when processing a product corresponding to processing data in which a predetermined cutting member differs from that of a product that has been processed in a situation where a plurality of products are to be processed, based on the detection result of the detection unit Whether the drill blade 30 and the slit blade corresponding to the processing data are attached to both the attachment portion of the drill blade 30 and the drive shaft 27 which is the attachment portion of the slit blade, or whether the drill blade 30 and the slit blade are attached. The detection device 8 may detect whether at least one of the blades corresponds to a predetermined cutting member, and different controls may be executed according to the detection result. For example, when both the drilling edge 30 and the slitting edge correspond to the machining data, machining under new machining conditions is allowed, and when both the drilling edge 30 and the slitting edge do not correspond to the machining data, prohibits machining by the new machining conditions and puts it in a stopped state, and if one of the drill blade 30 and the slit blade does not correspond to the machining data but the other corresponds, the cutting of the corresponding one You may make it permit cutting by a member. As a result, when only one of the cutting members is attached incorrectly, the other machining can proceed, thereby minimizing the time loss due to the stopped state.

As for the timing for detecting whether or not the cutting member corresponds to the processing of the processing data, the right or wrong of the cutting member is checked during the period from when the processing conditions are changed until the cutting member performs new processing. You should judge. For example, an articulated robot that uses multiple types of cutting parts that can be exchanged
In the case of the cutting device 7 such as , at the first timing when a cutting member for performing new processing is attached to the driving part of the cutting device 7 after the machining condition is changed, the attached cutting member You may make it discriminate|determine the right or wrong of.

Further, when a plurality of types of cutting members are attached to one cutting device 7, one detection device 8 may be used to determine whether the plurality of types of cutting members are correct or not. For example, when the slit blades 21 and 24, the drill blade 30, and the counterbore cutter are configured to be replaceable and attachable to the driving portion of the cutting device 7, one detection device 8 can be used to perform different types of cutting. It may be determined whether the member is correct or not.

In addition, in the cutting device 7, it is necessary to determine whether the correct cutting member is attached before cutting or at the timing when the cutting member is attached to the driving portion so that cutting can be performed. Instead, or in addition to this, the correctness of the cutting member may be determined at another position. For example, in a situation in which a plurality of cutting members are configured to be replaceable and attachable to the drive portion of the cutting device 7 and some of the cutting members are stored in a storage device, at the standby position stored in the storage device It may be determined whether the cutting members are correct or not. In this case, in a situation where some cutting members are performing cutting under old processing conditions, cutting members corresponding to new processing conditions are placed in the standby position. Control may be performed to determine whether or not the file is stored.

INDUSTRIAL APPLICABILITY As described above, the present invention is suitable for a processing apparatus for cutting wood or the like.

1: wood precut processing device, 2: control device, 3: control unit, 4: operation unit, 5: input unit, 6: display unit, 7: cutting device, 7A: slit processing device, 7B: hole processing device, 8: Detector, 8A: Reflective sensor, 8B: Transmissive sensor, 8Ba: Emitting part, 8Bb: Light receiving part, 9: Conveying device, 20: Slit blade, 21: First slit blade, 22: Large diameter circular saw , 22A, 25A: blade bag, 22C, 25C: center hole, 23, 25: small diameter cutter, 23C: center hole, 24: second slit blade, 27: drive shaft, 28: fixture, 29: fixture, 30 : Drill blade, 31: Spiral groove, 35: Driving part, 91: Joint metal fitting, 92: Circular tube metal fitting, 95A: Concave portion, 95B: Concave portion, 96: Hole, CP: Central axis, D1: Depth, D2: Depth DK: Distance HD: Estimated Radius LB: Measurement Light LL: Optical Path MK: Wood OL: Outer Edge PL: Estimated Position R3: Radius Difference SP: Blade Detection Position TP: Discrimination Blade Edge Position , WD: Separation distance

Claims (2)

A mounted part to which a cutting member having a blade capable of cutting a material by rotation is attached, wherein the cutting member can be rotated to process the material into a shape according to processing data of the product, A processing apparatus configured to be able to replace a plurality of types of cutting members having at least one of different sizes or shapes of cutting members in accordance with the processing data,
a detection means capable of detecting whether or not it is a predetermined cutting member corresponding to the processing of the processing data;
a control means capable of executing different controls according to whether or not the cutting member is the predetermined cutting member based on the detection result of the detection means ;
low-speed rotation control means for rotating the cutting member at a speed lower than a predetermined rotation speed for cutting the material with the predetermined cutting member;
The plurality of types of cutting members include at least a cutting member in which the distance from the center of rotation to the outer edge of the blade varies in the circumferential direction,
The detection means is arranged at a predetermined arrangement position capable of detecting whether or not a portion of the cutting member is positioned in a portion where the distance from the center of rotation of the cutting member to the outer edge of the blade portion varies,
When the predetermined cutting member is attached to the attached portion and the cutting member is rotated at the low speed by the low speed rotation control means, the detecting means detects whether the cutting member is positioned or not positioned. A processing device characterized in that it is configured to be alternately detected by A mounted part to which a cutting member having a blade capable of cutting a material by rotation is attached, wherein the cutting member can be rotated to process the material into a shape according to processing data of the product, A processing apparatus configured to be able to replace a plurality of types of cutting members having at least one of different sizes or shapes of cutting members in accordance with the processing data,
a detection means capable of detecting whether or not it is a predetermined cutting member corresponding to the processing of the processing data;
a control means capable of executing different controls according to whether or not the cutting member is the predetermined cutting member based on the detection result of the detection means;
As the plurality of types of cutting members, a combination of a drill member capable of forming a hole into which a cylindrical pin can be inserted and a saw member capable of forming a gap into which a plate-shaped portion can be inserted corresponds to the processing data. configured to be replaceable by
As the attached portion, a drill attachment portion to which the drill member is attached and a saw attachment portion to which the saw member is attached are provided, and detection means is provided for each of the drill member and the saw member. ,
In a situation where a plurality of products are to be processed, the control means is configured to, when starting to process a product corresponding to processing data in which the predetermined cutting member is different from that of a finished product, based on the detection result of the detection means. Either the drill member and the saw member as predetermined cutting members corresponding to the machining data are attached to both the drill attachment portion and the saw attachment portion, or the drill member and the saw member are attached. A processing apparatus characterized in that the detection means detects whether or not at least one of the saw member corresponds to the predetermined cutting member, and is configured to be capable of executing different control according to the detection result. .

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