JP5276809B2 - Manufacturing method for machine base - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mechanical device mount for preventing resonance with a mechanical device mounted thereon without changing the design of a mount formed in a general frame structure. <P>SOLUTION: A mount frame 1 is formed by filling concrete or mortar in an internal space of a plate working frame which is formed by assembling vertical frame members 2A and horizontal frame members 2B formed of steel pipes together. A concrete stage 4 is formed into a structure integrated with an upper part 2C of the mount frame which is molded by placing concrete on the upper part of the mount frame. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a machine stand, and more particularly, to a method for manufacturing a high-rigidity machine stand that is less likely to resonate with vibration generated from a machine device having a drive source.

  A mechanical device having a drive source generates vibrations and vibrations due to rotation, movement, stop, start, and the like. Therefore, when the gantry supporting such a mechanical device resonates with these vibrations and vibrations, it may be amplified more and the situation may occur in which it cannot proceed to the next process until the vibrations and vibrations stop.

  In order to prevent such resonance, for example, in Japanese Patent Laid-Open No. Hei 4-256615, when a steel pipe is arranged vertically and filled with concrete, the upper and lower ends of the steel pipe are both A parts feeder base frame having a structure in which an upper base plate and a lower base plate welded together with ribs are respectively fixed is disclosed. As a result, the main body portion of the gantry is highly rigid, and there is an effect that the structure is less likely to cause vibration and resonance of the parts feeder installed on the upper base plate.

  However, since the gantry of Japanese Patent Laid-Open No. 4-256615 has a structure in which the main body portion is vertically arranged with one high-rigidity steel pipe filled with concrete, the area of its upper end surface is reduced. There is a limit to its size. Therefore, in order to install a mechanical device such as a parts feeder on the frame, an upper base plate having an area larger than the area of the upper end surface is fixed to the upper end of the high-rigidity steel pipe, and the upper base is fixed. It must be installed on a board.

  Furthermore, although the upper base plate is welded to the steel pipe together with the rib, the upper base plate itself has low rigidity, and most of the periphery of the upper base plate is a free end. There still remains a problem that it tends to resonate with vibrations generated from mechanical devices such as parts feeders installed on the top.

  In addition, the gantry of Japanese Patent Laid-Open No. 4-256615 has a special configuration in which the large-diameter steel pipe occupies the main part. Therefore, a gantry for a general mechanical device formed by assembling frames vertically and horizontally (same as above) The configuration is fundamentally different from the conventional frame shown in FIG. Therefore, there is also a problem in that when a gantry having a configuration as disclosed in Japanese Patent Laid-Open No. 4-256615 is employed, the design must be re-designed.

  In order to solve such problems, the applicant first made a general construction without making design changes by adopting a structure in which the internal space of a frame formed by assembling steel pipes vertically and horizontally is filled with concrete or mortar. An application has been filed for a frame for a machine apparatus that can form a frame having a frame structure (utility model registration No. 3097573).

JP-A-4-256615 Utility Model Registration No. 3097573

  By changing the structure of the machine device frame to the configuration disclosed in the above-mentioned Patent Document 2 (Utility Model Registration No. 3097573), the design can be changed if it is a general box type frame as described above. There is an effect that it can be produced without doing. However, the base plate 5 for installing a mechanical device such as a parts feeder disclosed in Patent Document 2 is a separate member from the frame 2 and is attached to the upper part of the frame 2 by welding after the frame 2 is completed. In addition, in order to prevent the resonance preventing performance of the base plate 5 from being impaired, the entire base plate 5 is supported by a pedestal, that is, the base plate 5 is limited in its plate thickness. It is necessary that the area is equal to or smaller than the upper area of 2.

  As described above, the conventional gantry requires that the high-rigidity base plate 5 with a large plate thickness be prepared separately, and that a welding operation is required to attach the base plate 5 to the frame 2. This is a factor that raises the manufacturing price of the gantry. The present invention has been made in view of the above-described conventional problems. When the base plate is made of concrete that has high rigidity and is less likely to cause vibration and resonance from a mechanical device, the base plate is An object of the present invention is to provide a frame for a mechanical device that can be manufactured at low cost by integrally forming the frame with a base plate and attaching the base plate to the frame.

  In order to achieve the above object, a method for manufacturing a machine stand according to claim 1 of the present invention comprises a can frame formed by assembling a vertical frame member made of a steel pipe and a horizontal frame member vertically and horizontally. And set in the form consisting of side plate molds with the top and bottom reversed, and filling the interior space with concrete or mortar from the concrete filling port of the vertical frame member or horizontal frame member constituting the bottom of the can making frame When the gantry frame is formed, concrete is cast in the mold to form a concrete stage integrally formed with the upper part of the gantry frame.

  By adopting such a configuration, it is possible to manufacture a frame for a mechanical device with less resonance due to vibration of the mechanical device at a low cost with a small number of manufacturing processes, and at the same time, the upper part of the frame and the concrete stage include the stage. Since a single-piece structure is formed at the time of forming, it is possible to reduce the number of manufacturing steps if resonance due to vibration of the mechanical device is reliably prevented.

  Moreover, in order to achieve the said objective, the manufacturing method of the stand for mechanical apparatuses which concerns on Claim 2 of this invention is the structure whose said concrete or mortar is hydraulic high strength concrete or high strength mortar which mixed silica fume, and did. With such a configuration, the rigidity of the gantry can be further increased, and the resonance prevention performance of the gantry for the mechanical device is further improved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a mechanical device mount according to the present invention will be described in detail based on an embodiment shown in FIGS. 1 and 2. In the figure, A is a machine frame according to the present invention, and is mainly composed of a frame 1 and a concrete stage 4 placed on the frame 1.

  Reference numeral 2 denotes a can-making frame that constitutes the gantry frame 1, which is a rectangular parallelepiped formed by vertically and horizontally assembling a vertical frame member 2 </ b> A and a horizontal frame member 2 </ b> B made of a square pipe steel pipe. The gantry frame 1 is formed by a structure in which concrete or mortar 3 is filled in the hollow interior.

  Reference numeral 4 denotes a concrete stage installed on the top of the gantry frame 1, which is integrally formed on the top of the gantry frame 1 when the stage 4 is formed of concrete 3A, and is formed by the manufacturing method described below. Reference numeral 5 denotes a mounting bracket for connecting the upper end surfaces of the vertical frame member 2A. The mounting bracket 5 is used when installing a mechanical device (not shown) on the stage 4 and has through holes 5a at predetermined intervals. , 5a is attached via a concrete embedding member 5A. In the figure, reference numeral 6 denotes a filling port for filling the inside hollow of the can making frame 2 with concrete or mortar 3.

  Next, a method for manufacturing the machine stand A according to the present invention will be described in detail with reference to FIGS. 3 shows a can-making frame 2, which is a finished product of the can-making frame 2 formed by assembling a vertical frame member 2A made of a square pipe steel pipe and a horizontal frame member 2B vertically and horizontally, and the vertical frame member 2A. A mounting bracket 5 used for installing a mechanical device (not shown) is mounted on the upper end surface of the through the concrete embedded member 5A. In the figure, 7 is a leg plate.

  Therefore, the can-making frame 2 shown in FIG. 3 is installed as shown in FIG. 4 with its top and bottom reversed, and placed in the mold 8 comprising the mold bottom plate 8A and the mold side plate 8B assembled thereon. The can-making frame 2 is inserted from the upper part 2C side, and the can-making frame 2 is fixed to the mold 8 with a bolt (not shown) or the like (see FIG. 5). At this time, most of the upper surface side of the mounting bracket 5 attached to the upper end surface of the vertical frame member 2A of the can frame 2 via the concrete embedding portion 5A is a concave groove (not shown) formed on the mold bottom plate 8A. ) Is embedded in the structure.

  After the can-making frame 2 is set in the mold 8 in the state shown in FIG. 5, when the concrete frame or the mortar 3 is filled into the hollow inside of the can-making frame 2 from the filling port 6, the frame 1 is formed. The concrete 3A is placed in the side plate of the mold side plate 8B from the upper opening. Then, after the concrete or mortar 3 and the concrete 3A are hardened, the can-making frame 2 is removed from the mold 8, so that the upper part 2C of the gantry frame 1 is integrated with the upper part 2C as shown in FIGS. The concrete stage 4 having the structure is molded to form a machine stand A that is a finished product. In addition, since a large number of through holes 5a are formed at predetermined intervals in the concrete embedding member 5A, the concrete stage 4 is free from edge cutting by the steel material (concrete embedding member 5A), and the resonance prevention function is enhanced. .

  Here, as the concrete or mortar 3, in addition to cement concrete or cement mortar using cement as a binder, a heterogeneous material mainly having an inorganic self-hardening property is used. Preferably, high-strength concrete or high-strength mortar is used as the concrete or mortar, or expanded concrete or expanded mortar, non-shrinkable concrete or non-shrinkable mortar, high-fluidity concrete or high-fluidity mortar is used. For example, the high-strength concrete or the high-strength mortar may be a mixture of silica fume and a high-performance AE damping agent, or a mixture obtained by compacting the mixture by vibration or pressurization.

  Further, it is conceivable to use the expansion-generating force of ettringite or quicklime as the expanded concrete or expanded mortar, and to use a nonionic surfactant as the non-shrinkable concrete or non-shrinkable mortar. Further, as high-fluidity concrete and high-fluidity mortar, it is conceivable to use a powder type material to which fine powder of blast furnace slag is added, or a high-fluidity type material such as a cellulose-based thickener.

1 is an overall perspective view of a machine stand according to the present invention. FIG. 2 is an enlarged partial sectional view taken along line II-II in FIG. 1. It is a perspective view of the can making frame which comprises the mount frame for the same machine apparatus. It is a perspective view of the state which turned the can-making frame upside down. It is a perspective view in the state where a can-making frame was inserted into a formwork.

DESCRIPTION OF SYMBOLS 1 A frame for machine equipment 1 A frame for a frame 2 A can frame 2A A vertical frame member 2B A horizontal frame member 2C An upper portion of the frame 1 3 / 3A Concrete or mortar 4 Concrete stage 5 Mounting bracket 5A Concrete embedded member 5a Through hole 6 Filling Mouth 7 Leg plate 8 Formwork 8A Formwork bottom plate 8B Formwork side plate

Claims (2)

  A can-making frame formed by assembling a vertical frame member and a horizontal frame member made of steel pipes vertically and horizontally, and set in a mold frame made of a bottom plate mold frame and a side plate mold frame, with the top and bottom reversed, and the bottom of the can frame made When the frame is formed by filling concrete or mortar into the interior space from the concrete filling port of the vertical frame member or horizontal frame member to be formed, the concrete is placed in the mold and the upper part of the frame A method of manufacturing a machine stand, comprising molding a concrete stage having a single structure.   The method of manufacturing a machine stand according to claim 1, wherein the concrete or mortar is hydraulic high-strength concrete or high-strength mortar mixed with silica fume.

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