JP2015208758A - Method of manufacturing sheet metal structure, and sheet metal structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a sheet metal structure, which is aimed at stabilizing workability of a post-process for a sheet metal, and the sheet metal structure.SOLUTION: In a sheet metal structure, a spot weld zone is displayed by CAD data. Information thereon is reflected on CAM data. Spot marks 2b and 3b for guiding a spot welding operation are applied by a turret punch press or a laser beam machine.

Description

  The present invention relates to a sheet metal structure manufacturing method and a sheet metal structure, and more particularly to a sheet metal structure manufacturing method using a CAD / CAM system and a sheet metal structure manufactured by the method.

  A conventional sheet metal CAD / CAM system, as disclosed in, for example, Japanese Patent Application Laid-Open No. 6-231215 (Patent Document 1), is a sheet metal outline drawing at the time of development from CAD data expressing the shape and thickness of the sheet metal. This is a system that converts a bent portion into CAM data. The CAM data is input data for the turret punch press and input data for the vendor machine. This facilitates the development from design to manufacturing.

JP-A-6-231215

  In such a sheet metal CAD / CAM system, it is only possible to obtain processing data until the sheet metal developed shape is processed and bent, and data of processing contents after bending cannot be obtained, which is not a support. The sheet metal structure usually includes processes such as “punch”, “bending”, and “assembly” by joining parts such as welding and rivets, and “finishing” such as painting and caulking.

  Equipment such as a turret punch press, a laser processing machine, and a bender machine is used for “punch” and “bend”, which are called pre-processes. To do this, CAM data is entered, and human work is guided by the CAM data. However, the work after “bending” called “post-process”, “assembly” by joining parts such as welding and rivets, and “finishing” work such as painting and caulking are partly performed by painting robots and welding robots. However, there are many manual processes unless the mass production line has a similar shape. Therefore, compared with the previous process guided by the CAM data, the time required for the subsequent process is large, and there are many defects due to human error.

  The present invention is for solving the above-described problems, and provides a method for manufacturing a sheet metal structure and a sheet metal structure for the purpose of stabilizing workability in a post-process of the sheet metal.

  A sheet metal structure manufacturing method according to the present invention is a sheet metal structure manufacturing method for manufacturing a sheet metal structure by a CAD / CAM system, wherein a work location is displayed as CAD data on the sheet metal structure, and the information is displayed. The mark is reflected in the CAM data to guide the work.

  Further, a sheet metal structure according to another invention displays spot welding locations as CAD data in the sheet metal structure, reflects the information in the CAM data, and places a spot mark for guiding the spot welding operation with a turret punch press or laser processing. It was given by machine.

  According to this invention, the work of a post process is guided by the marking given to the welding location, the caulking location, etc. using the turret punch press or the laser processing machine. As a result, it is possible to improve the post-process work including assembly or finishing.

It is a perspective view of the spot welding guide by Embodiment 1 of this invention. It is an enlarged view of the spot mark of the non-appearance surface by Embodiment 1 of this invention. It is an enlarged view of the spot mark of the external surface by Embodiment 1 of this invention. It is a perspective view of the spot welding CAD data by Embodiment 1 of this invention. It is a figure which shows the determination method of a spot location from the spot surface by Embodiment 1 of this invention. It is a perspective view of the continuous welding guide by Embodiment 2 of this invention. It is an enlarged view of the continuous welding mark which requires the grinder by Embodiment 2 of this invention. It is an enlarged view of the continuous welding mark which does not require the grinder by Embodiment 2 of this invention. It is a perspective view of the continuous welding CAD data by Embodiment 2 of this invention. It is a perspective view of the rivet assembly guide by Embodiment 3 of this invention. It is an enlarged view of the rivet assembly mark by Embodiment 3 of this invention. It is a perspective view of the rivet CAD data by Embodiment 3 of this invention. It is a perspective view of the caulking guide by Embodiment 3 of this invention. It is an enlarged view of the caulking mark by Embodiment 3 of this invention. It is a perspective view of the coking CAD data by Embodiment 3 of this invention.

  Hereinafter, a preferred embodiment of a sheet metal structure manufacturing method and a sheet metal structure according to the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a spot welding guide according to Embodiment 1 of the present invention. An attachment sheet metal member 2 is attached by spot welding to a side surface 1a which is a non-appearance surface of the sheet metal member 1, and an attachment sheet metal member 3 is attached by spot welding to an upper surface 1b which is an appearance surface. The mounting sheet metal member 2 is spot spot 2b of the mounting sheet metal member 2 and spot spots 2b are guided and guided at 6 spot locations, and are attached by spot welding. The mounting sheet metal member 3 is guided by spot marks 3b provided at two spot locations as work locations on the spot margin 3a of the mounting sheet metal member 3, and is attached by spot welding.

  The spot mark 2b is a non-appearance surface and does not require the work of scoring the sheet metal by spot welding (hereinafter, scoring). However, the spot mark 3b is an external surface and needs to be burned off by spot welding. The shape of the spot mark 2b on the non-appearance surface that does not need to be burned out and the shape of the spot mark 3b on the appearance surface that needs to be burned out are the markings of the guide at the same spot, but different shapes for the purpose of guiding different operations. It has become.

  FIG. 2 is an enlarged view of the spot mark 2b on the side surface 1a which is a non-appearance surface. The spot mark 2b has, for example, a half-pressed shape with a diameter of 9 mm, and is applied by a turret punch press or a laser processing machine. FIG. 3 is an enlarged view of the spot mark 3b on the upper surface 1b which is an appearance surface. The spot mark 3b has a half press with a diameter of 9 mm and a half press with a dotted line, and is applied by a turret punch press or a laser processing machine.

  FIG. 4 is a perspective view of spot welding CAD data according to the first embodiment. This is CAD data for making it possible to convert the spot marks 2b and 3b for guiding the spot work into CAM data. An attachment sheet metal member 2 is attached to a side surface 1a which is a non-external surface of the sheet metal member 1 by spot welding. An attachment sheet metal member 3 is attached to the upper surface 1b, which is an appearance surface, by spot welding. By arranging the spot surface 2c on the mounting sheet metal member 2, information on the area to be spot welded is given to the CAD data. Further, by arranging the spot surface 3c on the mounting sheet metal member 3, information on the area to be spot welded is given to the CAD data. By changing the thickness of the spot surface 3c showing the appearance and the spot surface 2c showing the non-appearance, information on the difference is given to the CAD data.

FIG. 5 is a diagram showing a method for determining spot locations from the spot surfaces 2c and 3c according to the first embodiment.
When the short dimension 4a of the spot surface area 4 is set, the number of spot points 4c is rounded off to the first decimal place of (4a + 30) ÷ 60. This makes it possible to arrange the spot locations so that the maximum pitch is 60 mm. Similarly, in the longitudinal dimension 4b, a spot number 4d having a value rounded to the first decimal place of (4b + 30) ÷ 60 is arranged.

  By reading the CAD data in which the spot surfaces 2c and 3c are arranged according to this rule, it becomes possible to construct CAM data indicating the locations where the spot marks 2b and 3b are arranged.

  As described above, according to the sheet metal structure manufactured by the CAD / CAM system according to the first embodiment, it is possible to reduce the reading time by confirming the spot location by guiding the spot assembly by the spot marks 2b and 3b. As a result, workability is improved, and reliable work is guided by being guided by the actual product, thereby preventing erroneous work. Furthermore, since the spot pitch is stabilized, variation in individual rigidity can be reduced, and stability can be ensured.

Embodiment 2. FIG.
FIG. 6 is a perspective view of a continuous welding guide according to the second embodiment. Watertightness is secured by continuous welding of the corners 5a and 5b of the box-shaped sheet metal member 5. The continuous welding location that is the work location is guided and welded by the welding marks 5c and 5d. Since the corner portion 5a may have a member disposed in the vicinity thereof, a grinder is necessary, and the corner portion 5b does not require a grinder. The shapes of the continuous welding mark 5c that requires the grinder and the continuous welding mark 5d that does not require the grinder are the markings of the same continuous welding guide, but have different shapes for the purpose of guiding different operations.

  FIG. 7 is an enlarged view of a continuous welding mark necessary for the grinder. The continuous welding mark 5c necessary for the grinder has a V-shaped half press and a dotted line shape, and is applied by a turret punch press or a laser processing machine. FIG. 8 is an enlarged view of an unnecessary continuous welding mark of the grinder. The unnecessary continuous welding mark 5d of the grinder has a V-shaped half-pressed shape and is applied by a turret punch press or a laser processing machine.

  FIG. 9 is a perspective view of continuous welding CAD data according to the second embodiment. This is CAD data for enabling a mark for guiding a continuous welding operation to be converted into CAM data. Watertightness is secured by continuous welding of the corners 5a and 5b of the box-shaped sheet metal member 5. For example, by arranging rod-like surfaces 5e and 5f having a diameter of about 5 mm at the corners 5a and 5b, information on continuous welding locations is given to the CAD data.

  By changing the cross-sectional shape of the bar-shaped surface 5e indicating that the grinder is necessary and the bar-shaped surface 5f indicating that the grinder is not necessary, information on whether or not the grinder is necessary is given to the CAD data.

  As described above, according to the sheet metal structure manufactured by the CAD / CAM system according to the second embodiment, it is possible to reduce the reading time by confirming the continuous welding position by guiding the welding operation with the continuous welding mark. As a result, workability is improved, and reliable work is guided by being guided by the actual product, thereby preventing erroneous work.

Embodiment 3 FIG.
FIG. 10 is a perspective view of a rivet assembly guide according to the third embodiment. An attachment sheet metal member 7 is fixed and attached to the sheet metal member 6 by two rivets 7a. The rivet insertion direction is guided by the rivet assembly mark 7b.

  FIG. 11 is an enlarged view of the rivet assembly mark. The rivet assembly mark 7b has a triangular half-press shape, and is applied by a turret punch press or a laser processing machine. FIG. 12 is a perspective view of rivet assembly CAD data. This is CAD data for enabling the rivet assembly mark 7b for guiding the rivet assembly operation to be converted into CAM data. An attachment sheet metal member 7 is fixed and attached to the sheet metal member 6 by two rivets. By arranging the rivet itself as the solid data 7c, information on the rivet assembly direction is given to the CAD data.

  As described above, according to the sheet metal structure manufactured by the CAD / CAM system according to the third embodiment, it is possible to reduce the reading time by confirming the work location by guiding the rivet operation with the rivet assembly mark. Workability is improved, and it is possible to lead to a reliable work by being guided by the actual product and to prevent erroneous work.

Embodiment 4 FIG.
FIG. 13 is a perspective view of a caulking guide according to the fourth embodiment. An attachment sheet metal member 9 is fixed and attached to the sheet metal member 8 by spot welding. Caulking is applied to the boundary surface 9 a between the sheet metal member 8 and the mounting sheet metal member 9. The coking range is guided by the coking mark 9b.

  FIG. 14 is an enlarged view of the coking mark 9b. The caulking mark 9b has, for example, a linear shape having a length of 9 mm, and is applied by a turret punch press or a laser processing machine. FIG. 15 is a perspective view of coking CAD data. This is CAD data for enabling the caulking mark 9b for guiding the caulking work to be converted into CAM data. An attachment sheet metal member 9 is fixed and attached to the sheet metal member 8 by spot welding. Caulking is applied to the boundary surface 9 a between the sheet metal member 8 and the mounting sheet metal member 9.

  By arranging, for example, a cylindrical caulking mark 9b having a diameter of about 3 mm on the boundary surface 9a, information on the coking portion is given to the CAD data.

  As described above, according to the sheet metal structure manufactured by the CAD / CAM system according to the fourth embodiment, it is possible to reduce the reading time by checking the portion to be caulked by guiding the caulking work by the coking mark 9b. As a result, workability is improved, and reliable work is guided by being guided by the actual product, thereby preventing erroneous work.

  The sheet metal structure manufacturing method and the sheet metal structure according to the first to fourth embodiments of the present invention have been described above. However, the present invention can be freely combined with each other within the scope of the present invention. In addition, each embodiment can be modified or omitted as appropriate.

1, 6, 8 Sheet metal member, 1a Non-appearance side surface, 1b Appearance upper surface, 2, 3, 7, 9 Mounting sheet metal member, 2a Spot allowance, 2b Non-appearance spot mark, 2c, 3c Spot surface, 3a Spot allowance, 3b Appearance Spot mark, 4 Spot area, 4a Spot area short dimension, 4b Spot area longitudinal dimension, 4c, 4d Number of spot points, 5 Box-shaped sheet metal member, 5a, 5b Corner, 5c, 5d Continuous welding mark, 5e, 5f Bar-shaped surface 7a rivet, 7b rivet assembly mark, 7c solid data, 9a interface, 9b caulking mark.

Claims (8)

A sheet metal structure manufacturing method for manufacturing a sheet metal structure with a CAD / CAM system,
A method of manufacturing a sheet metal structure, characterized in that a work location is displayed as CAD data by the sheet metal structure, the information is reflected in CAM data, and a mark for guiding the work is applied.   2. The method for manufacturing a sheet metal structure according to claim 1, wherein a difference is provided in the mark depending on whether or not work traces are required at the work location.   A sheet metal structure characterized in that spot welding locations are displayed as CAD data on a sheet metal structure, the information is reflected in CAM data, and spot marks for guiding the spot welding operation are applied with a turret punch press or a laser processing machine. body.   4. The sheet metal structure according to claim 3, wherein a difference is provided in the spot mark depending on whether or not the sheet metal is burnt by spot welding.   A sheet metal structure characterized in that a continuous welding point is displayed as CAD data in a sheet metal structure, the information is reflected in CAM data, and a continuous welding mark for guiding a continuous welding operation is applied by a turret punch press or a laser processing machine. Structure.   The sheet metal structure according to claim 5, wherein a difference is provided in the continuous welding mark depending on whether or not a grinder operation is required at the continuous welding portion.   A sheet metal structure in which a rivet tightening location is displayed as CAD data on the sheet metal structure, the information is reflected in CAM data, and a mark for guiding rivet tightening is applied by a turret punch press or a laser processing machine.   A sheet metal structure in which a coking location is displayed as CAD data on the sheet metal structure, the information is reflected in CAM data, and a mark for guiding the coking is applied by a turret punch press or a laser processing machine.

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