Wooden Structure Design Support Device, Wood Processing Device, and Design Support Program

Abstract

To provide a wooden structure design support device, a wood processing device, and a design support program capable of suitably manufacturing a structural member used in a wooden structure.SOLUTION: A precut factory PC as a wooden structure design support device sets, when it is determined to set a shortened length as a length dimension of a male material 51, shape data of a convex portion 61 (dovetail portion 61d) corresponding to a shortened length that is different in shape from a case where it is determined to set a standard length in which a length dimension of the male member 51 is not shortened more than the shortened length. The shape data of the convex portion 61 corresponding to the shortened length is composed of shape data with a larger allowable length than shape data of the standard length, which allows a position where the male member 51 can be fitted into a female member 52 in a length direction of the male member 51.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a wooden structure design support device, a wood processing device, and a design support program that enable the suitable manufacture of structural members used in wooden structures.

Background Art

[0002] Conventionally, it is known to design a wooden structure such as a wooden house using CAD as a design support device, and to generate data (pre-cut processing data) for pre-cut processing of structural members constituting the wooden structure using this design data. By inputting this pre-cut processing data into a device capable of processing wood (wood processing device), it is possible to process the structural members required for the wooden structure in a pre-cut factory, and it is possible to efficiently manufacture the wooden structure at the construction site. In the design support device, when specification data such as floor plans is input, detailed specifications of each structural member, such as the size of the cross-section such as the width and composition of the wood of the wooden structure, and the specifications of the joints for joining structural members together, are set by a program or member data, and the burden on the operator performing the design work can be reduced (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, there may still be room for improvement in the configuration of a design support device for setting the shapes of joints such as joints and connections for joining a plurality of structural members in a wooden structure.

[0005] The present invention has been made to solve the above-described problems, and an object thereof is to provide a wooden structure design support device, a wood processing device, and a design support program that enable suitable production of structural members used in wooden structures.

Means for Solving the Problems

[0006] To achieve this object, the wooden structure design support device according to claim 1 is a wooden structure design support device that can be used for designing a wooden structure, joint part shape setting means capable of setting the shape of a joint part that joins one structural member constituting the wooden structure and another structural member, and processing data generation means capable of generating processing data of a structural member including the shape data of the joint part set by the joint part shape setting means, the joint part shape setting means can set, as the shape of the joint part, a shape corresponding to a concave part provided in a first structural member and formed in a concave shape, and a convex part provided in a second structural member that can be joined to the first structural member and can be fitted into the concave part, the concave part includes a part formed such that the side closer to the outer surface is smaller than the inner side from the inner side of the concave part, the convex part includes a part formed such that the side closer to the tip is larger than the base end side of the convex part, the processing data generation means is configured to be able to generate processing data in which a predetermined first length shorter than the length required for the wooden structure is set as the length dimension of the second structural member, when the first length is set as the length dimension of the second structural member by the joint part shape setting means, the joint part shape setting means can set the shape data of the joint part in which at least one of the shape data of the concave part and the convex part is different from that in the case where a predetermined second length in which the length dimension of the second structural member is not shortened from the first length is set, When the first length is set as the length dimension of the second structural member as the shape data of the joint portion, the shape data is set to have a larger allowable length that allows a position where the second structural member can be fitted to the first structural member in the length direction of the second structural member than when the second length is set as the length dimension of the second structural member.

[0007] According to the wooden structure design support device described in claim 1, when the first length is set as the length dimension of the second structural member, the shape data of the joint portion in which at least one of the concave portion and the convex portion has different shape data is set as compared with the case where the second length whose length dimension is not shorter than the first length is set. Then, when the first length is set as the length dimension of the second structural member, the shape data is set to have a larger allowable length (hereinafter, also referred to as "fitting allowable length") that allows a position where the second structural member can be fitted to the first structural member in the length direction of the second structural member than when the second length is set.

[0008] Since the first length of the second structural member has a shorter length dimension than the case where the second length is set, a second structural member shorter than the reference length dimension is basically manufactured. Therefore, when a large wooden structure is manufactured, even if many of the second structural members are manufactured larger within the allowable dimension range when a large number of second structural members are continuously arranged in a predetermined direction, the overall size can be suppressed within a certain range.

[0009] Also, even when the second structural member is manufactured to a length that matches the first length or to a length slightly longer than the second length in a situation where the first length is set, by setting shape data with a large fitting allowable length, the structural members can be arranged closer to the design values in a state where the first structural member is fitted into the second structural member. For this reason, even for large wooden structures or wooden structures where variations accumulate due to a large number of joints such as joints and connections arranged in a predetermined direction, resulting in a large dimensional error, it is possible to facilitate the manufacture of the wooden structure to a size close to the design value.

[0010] In addition, in the description of claim 1, as the shape data of the joint portion where at least one of the shape data of the concave portion and the convex portion is different, the shape data of only the concave portion may be different, or the shape data of only the convex portion may be different. As the structural member, the shape data of only the first structural member having the concave portion may be different, or the shape data of only the second structural member having the convex portion may be different. Further, the shape data of the joint portion where the shape data is different may be shape data where either the size or the shape of at least a part (for example, the ant portion) of the concave portion and the convex portion provided for the portion corresponding to the effective length of the structural member composed of a certain cross-sectional shape is different, or both are different.

[0011] In addition, in the description of claim 1, the length dimension of the second structural member may be the effective length excluding the shape portion of the joint or connection. For example, when a joint (for example, a large entrance ant joint) is provided at the end, the length dimension (body length) between the bodies formed by a substantially constant cross-sectional shape is exemplified, and when a connection (for example, a seated sickle joint) is provided at the end, the length dimension excluding the protruding portion provided to function as the connection is exemplified.

[0012] The wooden structure design support device according to claim 2 is the wooden structure design support device according to claim 1, wherein the second structural member the is provided with a determination means for determining whether or not it is a structural member that satisfies a certain shortening condition, and by this determination means, the predeterminedThe first length is set for the second structural member determined to be a structural member for which the shortening condition is satisfied, and machining data for the first structural member and the second structural member is generated by the machining data generation means using the shape data of the joint corresponding to the first length.

[0013] According to the wooden structure design support device described in claim 2, since it is possible to easily determine using the determination means that a structural member satisfies a predetermined shortening condition, it is possible to easily set the first length and the machining data corresponding to the first length for a large number of structural members that require setting of the first length.

[0014] The wooden structure design support device according to claim 3 is the wooden structure design support device according to claim 1 or 2, further comprising joint shape identification information output means capable of outputting joint shape identification information that can identify whether machining data for the first structural member and the second structural member has been generated using the shape data of the joint corresponding to the first length, corresponding to at least one of the machining data of the first structural member and the second structural member.

[0015] According to the wooden structure design support device described in claim 3, in a wood processing device (for example, a control device constituting a part of the wood processing device), it is possible to specify that it is the first structural member or the second structural member corresponding to the first length, and it is possible to perform operations such as further changing the first length or canceling the change to the first length during machining of the structural member. In addition, since it is possible to easily identify on the wood processing device side that it is a structural member corresponding to the first length, it is possible to print on the structural member itself that it is a structural member corresponding to the first length. For this reason, it is possible to easily determine on the construction site that it is a member corresponding to the first length, etc., and it is possible to easily execute the work in each process after identifying that it is a structural member corresponding to the first length in the process after generating the precut machining data.

[0016] The wood processing apparatus according to claim 4 is configured to manufacture, by cutting a processing material, the first structural member including the joint corresponding to the first length and the second structural member based on the processing data generated by the wooden structure design support apparatus according to any one of claims 1 to 3.

[0017] Note that the control means for controlling the wood processing apparatus according to claim 4 may be configured to include a changing means capable of changing the shape data (for example, the fitting allowable length) of the joint set by the wooden structure design support apparatus and the first length or the second length (for example, the body-attached length). By providing this changing means, it is possible to easily make corresponding operations such as correcting the joint preset by the wooden structure design support apparatus as needed at the stage of processing by the wood processing apparatus.

[0018] The design support program according to claim 5 is configured to be capable of causing a computer to function as the wooden structure design support apparatus according to any one of claims 1 to 3.

Effect of the Invention

[0019] According to the present invention, there is an effect that it is possible to provide a wooden structure design support apparatus, a wood processing apparatus, and a design support program that can suitably manufacture structural members used for wooden structures.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1(A) is a schematic diagram showing the configuration of the precut processing system 10 of the present invention, and FIG. 1(B) is a block diagram of the precut factory PC 20.

[0022] The precut processing system 10 is a system capable of designing a wooden structure using precut processing and manufacturing structural members (parts) that make up the wooden structure, and is configured to be applicable to various wooden structures including large wooden structures. Specifically, the precut processing system 10 can switch and set the length dimension of a structural member provided with a joint for joining two structural members to a standard length and a shortened length according to the situation in which the structural member is used. When the shortened length is set, the shape of the joint is made a different shape from the shape of the standard length, so that the allowable length allowing the position where the structural member can be fitted is increased.

[0023] As shown in Fig. 1(A), the pre-cut processing system 10 includes a pre-cut factory PC20 and a pre-cut processing device 30. In the pre-cut factory PC20, a joint shape setting program 21a and a pre-cut processing data generation program 21b are stored (recorded) as a control program 21, and standard joint shape data 22a and shortened joint shape data 22b are stored as member data 22. The joint shape setting program 21a in the pre-cut factory PC20 sets the shape of the joint using the standard joint shape data 22a when the standard length is set as the length dimension of the structural member, and sets the shape of the joint using the shortened joint shape data 22b when the shortened length is set. Thereby, it is possible to set pre-cut processing data capable of manufacturing structural members having different joint shapes when the standard length is set and when the shortened length is set as the length dimension of the structural member.

[0024] The pre-cut processing data generation program 21b is a program that generates pre-cut processing data corresponding to the shape data of each structural member set by the input operation of the operator. The pre-cut processing data includes data on the outer shape including the details of the structural member and member information including the arrangement position and type of the structural member. The pre-cut factory PC20 of the present embodiment sets the length dimension of the structural member and sets the shape of the joint corresponding to the length dimension, and the pre-cut processing data output can be output by the same processing as in the conventional case. For this reason, the pre-cut processing data generation program 21b can be configured in the same manner as the program for generating conventional pre-cut processing data, and detailed description thereof is omitted.

[0025] Hereinafter, first, the outline of the pre-cut processing system 10 will be described with reference to Fig. 1, and then, with reference to Fig. 2, specific examples of situations where setting of a shortened length is required as the length dimension of the structural member will be described. Furthermore, with reference to Figs. 3 and 4, the specific configuration of the structural member including the joint corresponding to the standard length and the shortened length respectively, and the control method of the length setting will be described in order.

[0026] The precut factory PC20 is provided, for example, in a precut factory where a precut processing device 30 is installed, and is a device that functions as a CAD (wooden structure design support device) capable of performing design (drafting) work on wooden structures. In the precut factory PC20, CAD software operable by a computer is stored, and design drawings of wooden structures can be drafted (drawn) using this CAD software. The design drawings are drawings that can be output based on design data that can generate precut processing data required for manufacturing wooden structures. Examples of the design data include cases where drafting is performed as three-dimensional data with structural members arranged in a three-dimensional space, and cases where drafting is performed as a plurality of two-dimensional data combined with a plan view (floor plan) and a side view, etc.

[0027] In the precut factory PC20, a control program 21 and member data 22 are stored as control data for causing the CAD software to function by a computer. Using these control data, an operator performing design work inputs input data of a wooden structure corresponding to the design specifications while displaying the design data of the wooden structure on the display screen (display unit 113) of the computer to perform drafting work. When the drafting work is completed, the detailed shapes of each part, such as the length and cross-sectional size (height, width, etc.) of each structural member required for the wooden structure, and the specifications of joints and connections, are determined (selected) using the control program 21 and the member data 22. When the detailed shape of the structural member is determined, precut processing data corresponding to the detailed shape is generated, and the precut processing data is output to the precut processing device 30.

[0028] The pre-cut processing device 30 includes a wood processing unit 32 composed of a mechanism capable of manufacturing structural members from material wood by cutting, and a control unit 31 capable of controlling the operation of the wood processing unit 32. The pre-cut processing data output from the pre-cut factory PC20 is input to the control unit 31 of the pre-cut processing device 30. The control unit 31 is composed of a control device such as a personal computer, and uses the input pre-cut processing data and a control program 31a (operation control program 31b) to control the operation of the drive mechanism of the wood processing unit 32. As the operation control program 31b, programs for selecting the types of cutting tools (saw, circular saw, cutter, etc.) required to manufacture each shape of the structural member and attaching the selected cutting tool to the drive part, programs related to the moving operation of moving to the necessary processing positions for the material wood, programs corresponding to the driving operation of rotating the cutting tool, etc. are exemplified. By the operation control of the wood processing unit 32 by this control unit 31, the pre-cut processing device 30 can manufacture a structural member having a shape corresponding to the pre-cut processing data.

[0029] A joint shape change program 31c is stored in the control unit 31 as a part of the control program 31a. The joint shape change program 31c is a program that enables the shape of the joint set by the pre-cut factory PC20 to be changed, and details will be described later.

[0030] Next, a configuration example of the pre-cut factory PC20 that functions as CAD will be described with reference to FIG. 1(B). As shown in FIG. 1(B), the pre-cut factory PC20, for example, has a CPU 102 as an arithmetic processing device, a RAM 103 for temporarily storing arithmetic data, a ROM 104, a hard disk device (HDD 105) as an auxiliary storage device, an input / output interface (I / O 106), etc. installed in a housing 101 as a main body, and each part is connected by a bus line. The HDD 105 stores a control program 21 including CAD software and various member data 22.

[0031] In addition, the precut factory PC20 includes an input / output device 111 capable of transmitting and receiving data, an operation unit 112 such as a keyboard and a mouse, and a display unit 113 such as a liquid crystal display. An operator can use the input / output device 111 of the precut factory PC20 to input, for example, design data (e.g., data in DXF format) that forms the basis of design drawings through a slot of a portable storage device (e.g., a USB memory), or can be configured to output precut processing data to the precut processing device 30 through a communication device connectable to a wired network or a wireless network.

[0032] Next, with reference to FIG. 2, a specific example of a situation where it is necessary to set a shortened length as the length dimension of the structural member will be described. FIG. 2(A) is a schematic diagram showing an example of a design drawing, and FIG. 2(B) is a perspective view showing an example of the shape of a joint. As illustrated in FIG. 2(A), the wooden structure 40 is configured by joining the ends of a plurality of structural members 41 to other structural members 41. The number of joints (joint portions) where the structural members 41 are joined tends to increase as the size of the wooden structure 40 increases, and also varies depending on the floor plan and use of the wooden structure 40. The joint portions of the structural members 41 can be broadly classified into a joint 42 for joining other structural members 41 so as to intersect in the continuous direction of one structural member 41, and a joint 43 for joining other structural members 41 along the continuous direction of one structural member 41. The wooden structure 40 shown in FIG. 2(A) is exemplified as a large wooden structure 40 including a plurality of structural members 41 in which a large number of joints 42 are arranged (connected) side by side in a predetermined one direction (the horizontal direction in FIG. 2(A)).

[0033] FIG. 2(B) illustrates the shape of the joint 42 as an example of a joint portion, specifically, the shape of a large ant joint. The joint 42 is a portion provided in a part of the structural member 41 (male member 51 as the second structural member) fitted from above and a part of the structural member 41 (female member 52 as the first structural member) located below. A convex portion 61 formed in a convex shape is provided at the end of the male member 51, and a concave portion 62 formed in a concave shape so as to be able to fit the convex portion 61 is provided in a part of the female member 52.

[0034] The convex portion 61 of the large ant entrance opening has a structure including an ant portion 61a and a sitting portion 61b. As shown in Fig. 2(B), the ant portion 61a is constituted by a shaped portion that is formed larger on the side closer to the tip than the base end side of the convex portion 61 of the male member 51. The sitting portion 61b is located on the base end side (the side farther from the tip of the convex portion 61 than the ant portion 61a), and is constituted by a portion having a larger outer shape than the ant portion 61a and formed with a constant cross-sectional size.

[0035] In the female member 52, a concave portion 62 is formed so as to have a concave shape corresponding to the ant portion 61a and the sitting portion 61b. The concave portion 62 is configured to include a concave portion that is formed smaller on the side closer to the outer surface 62a than the inner side of the concave portion and into which the ant portion 61a can be fitted. By forming the concave portion 62 and the convex portion 61 in this way, the male member 51 and the female member 52 as two structural members 41 can be joined so as to be orthogonal to each other.

[0036] Note that Fig. 2(B) illustrates a case where a cutout portion 62b is provided on the outer surface 62a of the female member 52 so as to be recessed by performing a cutout process. With respect to the inner surface formed by the cutout portion 62b, the reference surface (reference surface 61c) that serves as a reference at the base end side of the convex portion 61 of the male member 51 is disposed at a position that is one step inside from the outer surface 62a of the female member 52. By providing the cutout portion 62b in this way, even if the width dimension of the female member 52 varies slightly for each material wood before cutting, the reference surface 61c of the male member 51 can be disposed at an appropriate position with respect to the width center of the female member 52, and the sitting portion 61b can be reliably supported by the concave portion 62.

[0037] Here, as the joint, a large ant entrance joint is exemplified in Fig. 2(B). However, as joints used for the wooden structure 40, various shapes can be used. These various joints can be roughly classified into joints having a structure (hereinafter also referred to as "positioning structure") in which the convex portion 61 of the male member 51 that can be fitted into the concave portion 62 of the female member 52, such as the ant portion 61a, is formed larger on the side closer to the tip than the base end side to restrict the movement of the male member 51 in the direction away from the female member 52 (for example, a large ant entrance joint), and joints without a positioning structure (for example, a large entrance joint). In a wooden structure, from the viewpoint of strength after construction, etc., a large number of joints having a positioning structure are used for joints of a base, a beam, a cross member, etc. that are continuous in the horizontal direction. In addition to the large ant entrance joint, as the joint 42, an ant joint without a seat portion 61b is used, and as the joint 43, an ant joint or a sickle joint, etc. is used.

[0038] Since the relative positions of the plurality of structural members 41 are determined after assembly in a joint having a positioning structure, it is likely to affect the overall size (length) of the wooden structure and becomes one factor that causes the actual dimensions to vary from the design values. For this reason, when there is a slight deviation in the relative positions of the structural members 41 with a small size in one joint portion, even if the deviation amount is such that it does not pose a problem in a small wooden structure, in the case of a wooden structure in which a large number of joints are provided in one direction (for example, the left - right direction in Fig. 2(A)), the length (size) assembled at the construction site may become considerably larger than the design value.

[0039] If the actual dimensions of the wooden structure are significantly different from the design values, it may not be possible to arrange each structural member 41 at an appropriate position with respect to a foundation made of reinforced concrete, etc., and there may be a serious problem such that a part of the structural member 41 protrudes outside the foundation. For this reason, in some wooden structures such as a large wooden structure 40, it is difficult to perform all the cutting processes of the structural members 41 of the wooden structure at a pre - cut factory, and it may be necessary to take measures such as performing cutting processes on joints, etc. so that the lengths match at the construction site to manufacture the wooden structure.

[0040] In contrast, in the precut processing system 10 of the present embodiment, for some structural members 41 that make up a large wooden structure 40 or the like, it is possible to set a shortened length that is shorter than the standard length corresponding to the designed size. When this shortened length is set, as the shape of the joint, a shape different from the standard shape is set, and the allowable length that allows the position where the structural member 41 can be fitted is configured to be larger. Therefore, even if the actual size of a part of the wooden structure may be larger than the designed size, by setting the shortened length to shorten the length of the structural member 41 while setting a larger allowable length, the arrangement position of the structural member 41 can be adjusted according to the fitting position of the joint, and it is possible to avoid an increase in the overall size of the wooden structure. Thus, even when applying precut processing to a large wooden structure 40 typified by a multi-family house or a school building having a structural part where a large number of joints such as joints are arranged in one direction, it is possible to easily make the actual size of the wooden structure close to the design value. In addition, for wooden structures such as ordinary houses, the shape of the conventional joint can be set by setting the standard length, and the wooden structure can be manufactured through the same process as before. That is, by enabling the setting of the shortened length and the setting of the different shape of the joint in the precut processing system 10, it is possible to preferably manufacture the structural members 41 of various wooden structures including the large wooden structure 40 by precut processing.

[0041] Next, with reference to FIG. 3, a specific configuration of a structural member 41 (male member 51) of a standard length with a convex portion 61 set as a joint of the standard length and a structural member 41 of a shortened length with a convex portion 61 set as a joint of a different shape will be described.

[0042] FIG. 3(A) is a schematic diagram when a structural member 41 of a standard length (male member 51a of a standard length) is used, FIG. 3(B) is a schematic diagram when a structural member 41 of a shortened length (male member 51b of a shortened length) is used, and FIG. 3(C) is a schematic diagram showing a case where a structural member 41 of a shortened length (male member 51b of a shortened length) is manufactured longer.

[0043] In a wooden structure, as shown in Fig. 3(A), a male member 51a (second structural member) provided with convex portions 61 at both ends may be used to be fitted into a female member 52 (first structural member) provided with a concave portion 62 from the upper side (front side in the direction perpendicular to the plane of Fig. 3(A)). As a position where the male member 51a can be fitted, in a structural member 41 manufactured by conventional precut processing, as shown in Fig. 3(A), the length dimension of the male member 51a is set so as to be arranged at a position substantially coinciding with the design value.

[0044] The length dimension of the male member 51a is based on the length dimension (barrel-attached length L1, hereinafter also referred to as “effective length”) between the outer surfaces (barrel-attached) that function as the male member 51a, rather than the tip of the convex portion 61. The barrel-attached length L1 is recorded (stored) as data in the CAD software of the precut factory PC20. Since the barrel-attached length L1 does not vary even when the structure of the joint is changed (for example, when the size or length of the ant portion 61a fluctuates), data management in the design of the structural member 41 can be facilitated. Note that it is not necessarily required to use the barrel-attached length L1 as the reference (effective length) for the length dimension of the male member 51a, and another part such as the length between the outer surfaces 62a of the female member 52 may be recorded as the reference for the CAD software data.

[0045] Here, Fig. 3(A) illustrates a case where when the convex portion 61 of the male member 51a is fitted into the concave portion 62, the fitting allowable length in the length direction of the male member 51a (left-right direction in Fig. 3(A)) is “zero”, there is no gap allowing the position adjustment of the male member 51a, and the male member 51a and the female member 52 are completely positioned and fixed. The fitting allowable length between the male member 51a and the female member 52 does not necessarily have to be “zero”. A certain gap (clearance) may be provided in the length direction of the male member 51a (left-right direction in Fig. 3(A)) of the convex portion 61 of the male member 51a with respect to the concave portion 62, and the convex portion 61 of the male member 51a may be configured to be movable within a certain allowable length range (for example, within a length range of 0.2 mm) in the length direction of the male member 51a with respect to the concave portion 62 for assembly.

[0046] Next, the case where the shortened length is set will be described with reference to FIGS. 3(B) and 3(C). In FIGS. 3(A) to 3(C), a dashed line is attached to the center of the material width of the female member 52 into which the male member 51a is fitted at both ends of the male member 51, and the distance (separation length) by which the two female members 52 are separated is represented as "S". The case where the distance S is the same in FIGS. 3(A) to 3(C) is illustrated.

[0047] The prefabrication factory PC20 is equipped with a function of selecting the number of arrangements and cross-sectional sizes of the structural members 41 including the male members 51 and the female members 52 by performing strength calculations according to the design data, and based on the number of arrangements and cross-sectional sizes of the selected structural members 41, it is equipped with a function of determining specific specifications such as the length dimensions of the structural members 41 and the types of joints. With these functions, the prefabrication factory PC20 is configured to be able to output the prefabrication processing data of the structural members 41 corresponding to the detailed shapes enabling prefabrication processing. In this case, conventionally, by performing strength calculations on the design data, the length dimensions of the structural members 41 and the cross-sectional sizes of the outer shape portions serving as the reference of the structural members 41 (the horizontal length and width of the columns, the material width and material composition of the foundations, beams, cross members, etc.) are determined, and the types and sizes of the joints are determined as the detailed specifications of the joints according to the cross-sectional sizes.

[0048] On the other hand, the prefabrication factory PC20 is configured such that even when the cross-sectional sizes of the outer shape portions serving as the reference of the structural members 41 are the same, as shown in FIG. 3(A), there are cases where the male member 51a of the standard length is set, and as shown in FIG. 3(B), there are cases where the male member 51b of the shortened length with the trunk length L2 shorter than the male member 51a of the standard length is set. And when the shortened length is set, a joint shape different from that in the case of the standard length is set as the joint shape.

[0049] Specifically, as shown in FIG. 3(B), the shape of the ant portion 61d formed with the size of the tip portion of the ant portion 61a being smaller than the standard length is set. The width of the base side (proximal side) of the ant portion 61d (the length in the vertical direction in FIG. 3(B)) is set to be narrower than the ant portion 61a of the standard length, and the outer shape of the ant portion 61d is set to match the shape of the portion where the gap width becomes narrower in the concave portion 62. The convex portion 61 of the male member 51b is configured to be movable within a certain allowable length (fitting allowable length) range (for example, within a length range of 1.0 mm) in the longitudinal direction of the male member 51b with respect to the concave portion 62 for assembly, and the fitting allowable length is set to be longer than the allowable length (for example, "zero") when the standard length is set. Thereby, even when the male member 51b is manufactured to have a body-attached length L3 longer than the body-attached length L2 corresponding to the shortened length when the shortened length is set, the arrangement position of the female member 52 remains the same, and the convex portion 61 of the male member 51b with the shortened length can be fitted into the concave portion 62 of the female member 52 (see FIG. 3(C)).

[0050] Here, the setting of the fitting allowable length when the shortened length is set is preferably such that even when the male member 51b is manufactured to be long, it is easy to accommodate the actual dimensions of the wooden structure to a size close to the design value. In the present embodiment, even when the male member 51b is manufactured to have the same length as the standard length (body-attached length L1) when the shortened length (body-attached length L2) is set (see FIG. 3(C)), an example is illustrated in which the male member 51b can be fitted into the female member 52 without changing the separation length S between the two female members 52. As the setting of this fitting allowable length, it is not necessarily required to be able to fit without changing the separation length S between the female members 52 until the male member 51b is manufactured to have the same length as the standard length. When the male member 51b is manufactured with the standard length when the shortened length is set, the fitting allowable length may be set shorter than in the present embodiment so that the separation length S becomes longer.

[0051] In addition, the setting of the allowable fitting length when the shortened length is set may be a setting that provides a gap corresponding not only to the case where the male member 51b is manufactured long but also to the case where it is manufactured short. In this case, the gaps corresponding to both the case of being manufactured long and the case of being manufactured short may be provided with equal sizes in both directions, or may be provided unevenly such that one side is set larger (for example, the gap (allowable length) for the case of being manufactured long is set larger).

[0052] Also, regarding the shape of the joint when the shortened length is set, although the case where the size of the dovetail portion 61a is made smaller than the case where the standard length is set (dovetail portion 61d) has been described, any other shape may be used as long as it has a larger allowable fitting length than the case where the standard length is set. For example, when the shortened length is set, instead of simply making the size of the dovetail portion 61a smaller, the size at the tip side of the dovetail portion 61a is made smaller while the root side is set to a constant width that can enter the minimum gap portion of the concave portion 62 and is continuous (a portion with a constant cross-sectional size).

[0053] Also, when the shortened length is set for the male member 51, it is not always necessary to make only the shape of the convex portion 61 among the concave portion 62 and the convex portion 61 different. When the shortened length is set for the male member 51b, the shape of the joint portion where at least one of the shapes of the concave portion 62 and the convex portion 61 is different may be set. For example, when the shortened length is set, as the shape of the joint portion, the concave portion 62 of the female member 52 may be made larger than the case where the standard length is set to increase the allowable fitting length, or both the concave portion 62 of the female member 52 and the convex portion 61 of the male member 51 may be made different from the shape of the standard length to increase the allowable fitting length.

[0054] Next, with reference mainly to FIG. 4, the process of the joint shape setting program 21a that enables setting of the shortened length for a structural member provided with a joint (hereinafter, a structural member with a joint) will be described. FIG. 4 is a flowchart showing the process by the joint shape setting program 21a at the precut factory PC20.

[0055] In the pre-cut factory PC20, as the length dimension of the male member 51 (second structural member), not only the standard length but also a shortened length can be set. When the shortened length is set, shape data with a larger fitting allowable length is set as the shape data of the joint. Specifically, in the pre-cut factory PC20, standard joint shape data 22a including the shape data of the large dovetail joint shown in Fig. 3(A) is stored as the shape data of the joint corresponding to the standard length. Separately from this standard joint shape data 22a, shortened joint shape data 22b is stored as the shape data of the joint corresponding to the shortened length including the shape data of the large dovetail joint shown in Fig. 3(B) (see Fig. 1). These standard joint shape data 22a and shortened joint shape data 22b may be stored in the pre-cut factory PC20 by numerical information, may be stored as shape data, or may be stored in combination of numerical information and shape data. Also, the standard joint shape data 22a and the shortened joint shape data 22b may be stored as part of a program, or may be stored as information readable from a storage area separate from the program.

[0056] The joint shape setting program 21a is a program that constitutes a part of the CAD software of the pre-cut factory PC20 and is executed after the input operation of the outer shape and floor plan of the design drawing and before the output of the pre-cut processing data. For example, when an operator executes an operation to output the pre-cut processing data, the joint shape setting program 21a is executed. As a result, it is determined whether to set a shortened length for the structural member provided with a joint (hereinafter referred to as "structural member with joint"). When the shortened length is set, the shortened joint shape data 22b is set for the structural member with joint. Note that the joint shape setting program 21a may be executable at other timings, such as at the timing intended by the operator during the operation of the CAD software such as during the creation of the design drawing.

[0057] When the joint shape setting program 21a is started, as shown in FIG. 4, first, a process of reading the outer dimension length data of the wooden structure is executed (S11), and it is determined whether the outer shape of the read wooden structure (for example, the horizontal lengths along each of the two directions in which the base, beams, cross members, etc. are arranged orthogonally) is equal to or greater than a predetermined length (for example, 20 m) (S12).

[0058] Here, when the outer dimension length of the wooden structure is equal to or greater than a certain value, it is likely to include a large number of joints. Accordingly, due to the dimensional variations of the structural members and the variations during assembly, the variation in the outer dimension length of the wooden structure increases, which may cause a displacement between the reinforced concrete foundation part and the wooden structure part. Also, even on the same floor, if the number of parallel and continuous structural members (for example, beams) is different, a deviation occurs in the overall length, and there is also a possibility that the structural members (for example, a part of the beam) that should be orthogonal in plan view are arranged obliquely. Even when a large deviation occurs in the lengths of the beams on different floors above and below, there is also a possibility that the columns and beams that should be orthogonal in side view are no longer orthogonal. In these cases, by setting a reduced length for at least a part of the structural members and increasing the allowable fitting length at the joints of the structural members, the variation in the outer dimension length of the wooden structure can be absorbed at the joints. As a result, even if the structural members required for manufacturing a large wooden structure are manufactured at a prefabrication factory by pre-cutting, it is possible to easily bring the overall outer dimension length closer to the design value at the construction site.

[0059] As a criterion for setting the reduced length based on the outer dimension length of the wooden structure, the manufacturer of CAD software may input, as an initial value, an empirical numerical value that is considered better to set the reduced length, or the builder using the CAD software may add an input function that allows each builder to input and set specific numerical values for each builder.

[0060] In the process of S12, when it is determined that the outer shape of the wooden structure is 20 m or more (S12: Y), a shortened length is set for the second structural member corresponding to the male member among the structural members with joints (S21).

[0061] After the process of S21, shortened joint shape data 22b is set for the structural members with joints (S22). The setting of this shortened joint shape data 22b only needs to set the shortened joint shape data 22b corresponding to the shortened length for at least one of the female member 52 (the first structural member) and the male member 51 (the second structural member). When making the shape data of both the first structural member and the second structural member different from that in the case of the standard length as the shortened joint shape data 22b, the shortened joint shape data 22b is set for both structural members.

[0062] After the process of S22, shortened joint information is added to the structural members with joints (S23). This shortened joint information is information that functions as joint shape identification information capable of identifying that a shortened length has been set for the structural member. For example, it is composed of dedicated information indicating that a shortened length has been set for the structural member. For example, as information data of the structural member indicating whether a shortened length has been set, in an information table corresponding to each item including the body-attached length, the total length, the arrangement position information, etc., an item corresponding to the setting of the shortened length is added as an item, and the information corresponding to that item (for example, 1-bit information) is set to "0" corresponding to the standard joint information in the case of the standard length and "1" corresponding to the shortened joint information in the case of the shortened length.

[0063] This shortened joint information is preferably output from the precut factory PC20 as precut processing data in a state associated with the shape data and printing data of the structural member. Thereby, in the precut processing apparatus 30, since it is possible to identify that it is the second structural member with the shortened length based on the shortened joint information, it is possible to easily perform processing corresponding to the setting of the shortened length in each process after the output of the precut processing data. For example, for a structural member (finished part) with a standard length set, character information of "standard" is printed, and when the shortened length is set, by printing character information of "shortened", it is possible to identify that it is a structural member with the shortened length set at the construction site and manufacture a wooden structure. Further, the shortened joint information can be added to a part of the conventionally used information. For example, the shortened joint information may be added in a form included in the length information indicating the total length of the part, or the structural member may be printed in a form added to the total length of the part. For example, in the case of the standard length, only a number corresponding to the length such as "1800" is printed, and in the case of shortening, it is printed as "1800s", and it may be possible to identify that it is a structural member with the shortened length set by the presence or absence of the last character "s".

[0064] Further, the shortened joint information is not limited to 1 bit and may be constituted by information of 2 bits or more. For example, two or more length dimensions can be set as the shortened length, and when each shortened length is set, different information such as "1", "2", "3" is added according to the degree of the shortened length, and any of the information may be output to the precut processing apparatus 30 as the shortened joint information. Thereby, as information indicating each shortened length, different information such as "s1", "s2", "s3" can be printed on the structural member, and it is possible to easily identify the degree of the shortened length.

[0065] In the process of S12, when it is determined that the outer shape of the wooden structure is not 20 m or more (S12: N), the layout data of the structural members is read (S13), and it is determined whether the number of locations where the structural members are connected by joints is a certain number or more (for example, 10 or more) (S14).

[0066] In the process of S14, when it is determined that the number of locations where structural members are connected by joints is equal to or more than a certain number (S14: Y), the processes from S21 to S23 are executed to set a shortened length for the structural member with joints, set the shortened joint shape data 22b, add the shortened joint information, and end the process by the joint shape setting program 21a.

[0067] This process of S14 is a process corresponding to the possibility that the error in the overall length becomes large when the number of locations where structural members are connected by joints is large. Also in this case, a shortened length is set for the structural member for which it is determined that the number of connected locations is large. Thereby, in a large wooden structure or in a situation where a large number of joints are used due to the floor plan or the like, it is possible to easily manufacture a structural member that is easy to cope with the error in the overall length by the precut processing device 30.

[0068] Here, in the process of S14, the number of locations where structural members are connected by joints is counted as the number of joints in a predetermined direction (for example, the left - right direction in Fig. 2(A)) and the number of joints in a direction intersecting the predetermined direction (for example, the up - down direction in Fig. 2(A)) respectively, and it is determined whether to set a shortened length for the structural members arranged along each direction. It is preferable to perform the processes of S21 to S23 corresponding to the shortened length for the structural members that satisfy the conditions of the process of S14.

[0069] In the process of S14, when it is determined that the number of connections of structural members by joints is less than a certain number (S14: N), the character "Do you want to make the structural member with joints correspond to shortening?" is displayed on the display screen (S15). When the input operation by the operator is the selection of "corresponding to shortening" (S16: Y), the processes of S21 to S23 corresponding to the shortened length are performed on the structural member designated by the operator. By these processes of S15 and S16, according to the intention of the operator, settings corresponding to the shortened length can also be executed for the structural member selected by the operator.

[0070] If the input operation by the operator is not the selection of "shortening response" (S16: N), a standard length corresponding to the design standard data is set for the second structural member corresponding to the male member among the structural members with joints (S17). After the process of S17, standard joint portion shape data 22a is set for the structural member with joints (S18), and standard joint portion information is added to the structural member with joints (S19), and the process by the joint portion shape setting program 21a is terminated.

[0071] Thus, according to the pre-cut factory PC20, when the shortened length (first length) is set as the length dimension of the male member 51, the shape data of the joint portion with different shape data of the convex portion 61 is set as compared with the case where the standard length (second length) in which the length dimension of the male member 51 is not shortened is set. And when the shortened length is set as the length dimension of the male member 51, the shape data with a larger fitting allowable length is set than when the standard length is set as the length dimension of the male member 51.

[0072] Since the shortened length of the male member 51 is shorter in length dimension than the case where the standard length is set, the male member 51 is shorter than the reference length dimension (design value). For this reason, when a large wooden structure is manufactured, when a large number of male members 51 are continuously arranged in a predetermined direction, even if many of the male members 51 are manufactured larger within the allowable dimension range, the overall size can be suppressed within a certain range.

[0073] That is, even when the male member 51 is manufactured to a size that matches the shortened length, or even when the male member 51 is manufactured to a size larger than the shortened length, the wooden structure will not become larger as long as the length is set to be shorter than the standard length. Also, when a large number of joints are provided by joints, although there is a possibility that the size of the wooden structure as a whole may become too large or the length in a predetermined direction may become too long, by making it possible to easily set the shortened length for a wooden structure with a large number of joints, it is possible to easily manufacture the wooden structure to a size close to the design value while using precut processing. Therefore, it is possible to easily manufacture various wooden structures, including large wooden structures and wooden structures arranged such that a large number of joints are aligned in a predetermined direction, to a size close to the design value using precut processing.

[0074] Further, in the control unit 31 of the precut processing apparatus 30 provided with the wood processing unit 32, it is possible to identify whether it is the female member 52 or the male member 51 corresponding to the shortened length based on the presence or absence of the shortened joint information added by the precut factory PC20. For this reason, in the process of performing precut processing with the precut processing apparatus 30, it is possible to make corresponding operations such as further changing the shortened length or canceling the change to the shortened length. Also, the precut processing apparatus 30 can print that it is a member corresponding to the shortened length, making it easy to determine that it is a structural member corresponding to the shortened length at the construction site.

[0075] Here, as shown in FIG. 1, it is preferable that the pre-cut processing apparatus 30 is provided with a joint portion shape change program 31c as a part of the control program 31a. The joint portion shape change program 31c is a program that can change a structural member set to a standard length to a shortened length, and can be configured in the same manner as the joint portion shape setting program 21a provided in the pre-cut factory PC20. Further, the joint portion shape change program 31c can change the structural member set to the standard length to the shortened length and change the standard joint portion shape data 22a to the shortened joint portion shape data 22b, and is preferably configured to be able to change the standard joint portion information to the shortened joint portion information.

[0076] Further, the joint portion shape change program 31c is preferably provided with a program corresponding to a function of returning the shortened length set in the pre-cut factory PC20 to the standard length, returning the shortened joint portion shape data 22b to the standard joint portion shape data 22a, and returning the shortened joint portion information to the standard joint portion information. Also, it is preferably configured to be able to change the amount of the shortened length for the structural member with the shortened length set, or to change the allowable fitting length in the length direction of the second structural member to be larger or smaller as the shortened joint portion shape data 22b. Thereby, not only the operator of the pre-cut factory PC20 but also the operator who operates the pre-cut processing apparatus 30 can execute the processing corresponding to the shortened length, so that it is possible to obtain a system in which it is easy to manufacture a structural member corresponding to the situation at the construction site of a wooden structure.

[0077] It should be noted that the present invention is not limited to the above-described embodiment, and it can be easily inferred that various improvements and modifications are possible without departing from the gist of the present invention. For example, it may be implemented with modifications as described below.

[0078] In the above-described embodiment, the case of setting the reduced length for the structural member provided with the joint has been described. However, setting the reduced length is not limited to the joint, and the reduced length may be settable for the structural member provided with the joint. That is, when the reduced length is set, shape data with a large fitting allowable length that allows one structural member to be fitted into the other structural member in the length direction of the two structural members continuous with each other by the joint may be configured to be set as the shape data of the joint.

[0079] In the above-described embodiment, the case of setting the same reduced length for each structural member has been described. However, different lengths may be set. For example, a total reduced length amount may be set for a plurality of structural members, and the reduced length amount may be divided by the number of structural members to be used to set the reduced length for one structural member. For example, when the total number of joints 43 and openings 42 in the horizontal direction at the topmost stage in Fig. 2(A) is "5", the total number of joints 43 and openings 42 in the horizontal direction at the middle stage is "10", and the number of openings 42 in the horizontal direction at the bottom stage is "30", a reduced length amount of "0.5 mm" is set for the structural member 41 provided with the opening in the horizontal direction at the bottom stage, and a reduced length amount of "1.5 mm", which is three times that of the bottom stage, is set for each structural member 41 provided with the opening or joint in the horizontal direction at the middle stage. A reduced length amount of "3.0 mm", which is six times that of the bottom stage, is set for each structural member 41 provided with the opening or joint in the horizontal direction at the topmost stage, and a fitting allowable length corresponding to each reduced length amount may be provided. Thereby, the total of the gaps (clearances) set in the top, middle, and bottom stages can be made to match, and the clearances can be set in a well-balanced manner without contributing to the difference in the lengths of the structural members 41. Also, for each structural member arranged in the upper layer and the lower layer, a total reduced length amount may be set, and the reduced length amount and the fitting allowable length may be allocated to each structural member according to the number of joints in the upper layer and the lower layer.

[0080] In the above-described embodiment, as the process of the joint shape setting program 21a, the case where the same process corresponding to a certain shortening length is executed for all the structural members 41 that satisfy the condition for setting the shortening length has been described. However, processes corresponding to a plurality of types of shortening lengths may be executed for the structural members 41 that satisfy the condition for setting the shortening length, or processes corresponding to the shortening length may be executed only for some of the structural members 41, and processes corresponding to the standard length may be executed for the remaining structural members 41. For example, for some of the structural members 41 close to the end side of the wooden structure, processes corresponding to a certain shortening length may be executed, and for the remaining structural members 41 close to the center side, processes corresponding to a shortening length with a smaller length of shortening than the end side may be executed, or processes corresponding to the standard length may be executed.

[0081] In the above-described embodiment, as the process of the joint shape setting program 21a, the case where both the conditions corresponding to the size of the wooden structure (processes of S11 and S12) and the conditions corresponding to the number of joints (processes of S13 and S14) are implemented to execute the process corresponding to the shortening length has been described. However, it is not always necessary to set both, and either one may be omitted, or other conditions may be added for configuration. For example, a condition corresponding to the number of joints may be added, and the condition may be that the total number of joints and joints is arranged in a predetermined direction and is equal to or more than a certain number. Alternatively, a configuration may be adopted in which the process corresponding to the shortening length is executed using a condition using the number of structural members having joints or joints. Further, the processes (processes of S15 and S16) that enable the setting of the shortening length by the input operation of the operator are not necessarily required and may be omitted.

Industrial Applicability

[0082] As described above, the present invention is suitable for a wooden structure design support device, a wood processing device, and a design support program that enable the suitable manufacture of structural members used in wooden structures.

Explanation of Signs

[0083] 10: Precut processing system, 20: Precut Factory PC (Timber Structure Design Support Device) 21a: Joint Shape Setting Program (Part of Joint Shape Setting Means, Joint Shape Identification Information Output Means) 21b: Precut Processing Data Generation Program (Processing Data Generation Means) 30: Precut Processing Device (Timber Processing Device) 31b: Joint Shape Change Program (Change Means) 40: Timber Structure 41: Structural Member 51, 51a, 51b: Male Timber (Second Structural Member) 52: Female Timber (First Structural Member) 61: Convex Portion (Convex Part) 62: Concave Portion (Concave Part)

Claims

1. A wooden structure design support device that can be used for the design of wooden structures, comprising joint shape setting means capable of setting the shape of a joint that joins one structural member constituting the wooden structure and another structural member, and processing data generation means capable of generating processing data of a structural member including the shape data of the joint set by the joint shape setting means, wherein the joint shape setting means can set, as the shape of the joint, a shape corresponding to a concave portion provided in a first structural member and formed in a concave shape, and a convex portion provided in a second structural member joinable to the first structural member and capable of being fitted into the concave portion, the concave portion includes a portion formed such that the side closer to the outer surface is smaller than the side closer to the inner side of the concave portion, the convex portion includes a portion formed such that the side closer to the tip is larger than the side closer to the base end side of the convex portion, the processing data generation means is configured to be able to generate processing data in which a predetermined first length shorter than the length required for the wooden structure is set as the length dimension of the second structural member, when the joint shape setting means sets the first length as the length dimension of the second structural member, and when a predetermined second length in which the length dimension of the second structural member is not shortened compared to the first length is set, the joint shape setting means can set the shape data of the joint in which at least one of the shape data of the concave portion and the convex portion is different, as the shape data of the joint, when the first length is set as the length dimension of the second structural member, a shape data is set in which the allowable length allowing the second structural member to be fitted into the first structural member in the length direction of the second structural member is larger than when the second length is set as the length dimension of the second structural member. A wooden structure design support device characterized by this.

2. Comprising determination means for determining whether or not the second structural member is a structural member for which a predetermined shortening condition is satisfied, and when the determination means determines that the second structural member is a structural member for which the predetermined shortening condition is satisfied, the first length is set for the second structural member, and the processing data of the first structural member and the second structural member is generated by the processing data generation means using the shape data of the joint corresponding to the first length. The wooden structure design support device according to Claim 1, characterized by this.

3. Joint shape identification information capable of identifying whether or not machining data for the first structural member and the second structural member has been generated using the shape data of the joint corresponding to the first length is outputtable in association with machining data for at least one of the first structural member and the second structural member. The wooden structure design support device according to any one of claims 1 or 2, characterized in that it is provided with joint shape identification information output means.

4. Based on the machining data generated by the wooden structure design support device according to any one of claims 1 to 3, the first structural member and the second structural member including the joint corresponding to the first length are manufactured by cutting the machining material. A wood processing device characterized in that it is configured to be capable of

5. A design support program characterized in that a computer can be made to function as the wooden structure design support device according to any one of claims 1 to 3.

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