JPH0679563A - Machine tool - Google Patents

Abstract

PURPOSE:To provide a machine tool which has dissolved the trouble to prepare a hanging up tool or to remove a side cover, every time when a crane hanging conveyance is carried out. CONSTITUTION:In this machine tool, a standard seat 3 formed on the upper side of a bed 2 is projected outward from the sides of the bed 2 to form shoulders 3b for installing metal fittings, and hanging metals 13 whose hooks 13b are extended upward as well as whose receivers 13c are extended to the lower side of the shoulders 3b are fixed to the bed 2 through fixing means 14 and 15, and the main body load from the shoulders 3b for installing metal fittings is received by the receivers 13c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine tool suitable for carrying work by hanging a crane.

[0002]

2. Description of the Related Art When carrying in a machine tool or replacing it in another place, it is necessary to lift it with a crane. In this case, the wire is preferably hooked on the bed of the machine body where the center of gravity is located, and pulled so as not to interfere with the respective assembly members on the bed.

5 and 6 showing a conventional crane suspension structure, the machine tool 1 is an example of a general lathe, and a standard seat portion 3 formed on an upper part of a bed 2 is
The spindle units 4 and 5 face each other in the longitudinal direction of the machine body with the work table 6 interposed therebetween. Then, during normal use, the spindle units 4 and 5 are each covered with a side cover 7. The side cover 7 is fixed to the cover mounting ribs 8 arranged side by side on the main frame 2a forming the side portion of the bed 2 by a mounting method such as screwing.

When the machine tool 1 is hoisted by a crane, the bar members 10 are inserted into the two through holes 9 formed in the bed 2 in advance, and the hoisting tool of the crane is attached to each end of the bar member 10. The wire 12 suspended at 11 is hooked. In this case, the side cover 7 is removed and the bar member 10 is sufficiently longer than the width of the machine body so that the portion formed on the upper portion of the bed 2 does not interfere with the wire 12. A wire is used so that the lower end of the wire 12 is hooked on both ends of the bar material 10 as much as possible.

[0005]

Therefore, in the conventional machine tool, the accessories such as the side cover 7 once assembled must be disassembled at the time of shipping from the factory or when moving the installation place. Further, the bar 10 is specially prepared, inserted into the bed 2, and the wire 12 is hooked. Furthermore, after carrying the crane, the side cover 7 and other accessories must be attached again. I won't.

According to the present invention, the number of man-hours required for the crane suspension work can be reduced by connecting the once assembled member to the subsequent process without removing it halfway, and the wire-hanging rod for lifting is not required. It is an object of the present invention to provide a machine tool that can be safely lifted.

[0007]

In order to solve the above problems, a machine tool of the present invention is a machine tool in which a working unit is provided on a standard seat portion on a bed, and the standard seat portion is provided with the standard seat portion. Of the bed to form a shoulder for mounting the metal fitting by projecting further from the side of the cord, and having a receiving portion for directly or indirectly locking the shoulder for mounting the metal fitting. In the machine tool, the side cover and the shoulder for mounting the metal fitting are mounted inside the side cover through fixing means.

In a preferred aspect, the fixing means is a washer that is welded to the side of the bed so as to abut the lower surface of the metal fitting mounting shoulder, and is suspended in a state of abutting the lower surface and the side surface of the washer. It can be composed of a bolt for fixing the receiving portion of the metal fitting. As another aspect, the fixing means may be composed of a welding portion for fixing the receiving portion of the hanging metal fitting so as to directly engage with the lower surface of the metal fitting mounting shoulder portion.

[0009]

According to this structure, the hanging metal fitting to which the wire is hooked is attached to the inside of the side cover, and the crane lifting operation can be performed without removing the side cover. In addition, the hanging metal fittings are fixed to the bed so that the locking parts of the hanging metal fittings receive the lower surface of the metal fitting shoulders protruding from the side of the bed. Therefore, a safe lifting structure is achieved without involving the fixing means of the suspension fitting.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A machine tool to which the present invention is applied will be described in detail below with reference to FIGS. It should be noted that the same components as those in FIG. 1 and 2, the machine tool 1 has the same structure as that shown in FIG. It is a lathe facing the longitudinal direction. A side cover 7 that covers the sides of the main spindle units 4 and 5 is fixed to a cover mounting rib 8 that is juxtaposed on the main frame 2a of the bed 2 by, for example, screwing.

By the way, the standard seat portion 3 of the bed 2 has a metal fitting mounting shoulder portion 3b protruding outward from the main frame 2a of the bed 2. The side cover 7 is provided so as to surround the metal fitting mounting shoulder portion 3b inside. The standard seat portion 3 of the bed 2 is integrated with the upper portion of the main frame 2a by welding (see FIG. 3). In addition, suspension metal fittings 13 having hook portions 13a extending upward are attached to the main frame 2a of the bed 2 at four positions in the longitudinal direction of the machine body and in the left and right directions of the width direction via washers 14.

The washer 14 is a rectangular nut-shaped member having four screw holes 14a, as shown in FIG.
The one side surface 14b is fixed to the main frame 2a of the bed 2 by welding so that the one side surface 14b abuts the lower surface of the metal fitting mounting shoulder portion 3b. The welding points are one side surface 14b of the washer 14 that abuts the lower surface of the metal fitting shoulder 3b and the metal fitting shoulder 3b.
Between the side end face of b, between the one side face 14b of the washer 14 and the lower side face 14c opposite to the main frame 2a.

The hanging metal fitting 13 has a base portion 13b corresponding to the washer 14 and is fixed to the washer 14 by a bolt 15 fastened to a screw hole 14a of the washer 14. The lower end of the base portion 13b is the lower side surface 14c of the washer 14.
13 that extends horizontally to engage with the lower surface 14c
c is formed. In such a machine tool 1, since the hanging metal fitting 13 for hanging the crane is permanently installed inside the side cover 7, it is not necessary to remove the side cover 7 when hanging the crane, and the hook portion 13 a of the hanging metal fitting 13 is not required. Only by hanging the wire 12, the crane can be lifted.

Here, the load of the machine body is applied from the metal fitting mounting shoulder portion 3b formed on the side edge of the standard seat portion 3 to the receiving portion 13c of the hanging metal fitting 13 via the washer 14 and the bolt 15
It doesn't work. If the receiving portion 13c is not provided, the load of the machine body will be applied to the bolt 15. However, the bolt 15 will overload the machine body,
Safety is not guaranteed.

Therefore, as in the present embodiment, by providing the receiving portion 13c for receiving the load of the machine body from the metal fitting shoulder 3b integral with the bed 2, the load of the machine body is reduced by the bolt 1
Even if a small amount of force is applied to 5, it is not overloaded, and an extremely safe lifting structure is achieved. Of course, the hanging metal fitting 13 is selected to have a sufficient thickness and material for receiving the load of the machine body.

Further, in this embodiment, the hook portion 13a of the hanging fitting 13 extends to a position higher than the reference seat portion 3 of the bed 2, and the wire 12 hooked on the hook portion 13a is
It does not interfere with the end angle of the bed 2 and is in a linear suspended state, and it is not necessary to consider damage to the wire 12. Next, another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 4 is characterized by the fixing structure of the hanging metal fitting 13. The hanging metal fitting 13 has a base portion 13b and a hook portion 13 extending upward from the base portion 13b, as in FIG.
a and a receiving portion 13c extending horizontally from the lower end of the base portion 13
It consists of and. In the present embodiment, the hanging fitting 1
3 is directly fixed to the metal fitting mounting shoulder 3b integral with the bed 2 by welding, and in this case also, the receiving portion 13c
Is engaged with the metal fitting shoulder 3b so as to receive the load of the machine body from the lower surface of the metal fitting shoulder 3b.

Also in this embodiment, similarly to the previous embodiment, the receiving portion 13c can surely receive the load of the machine body from the lower surface of the metal fitting mounting shoulder portion 3b and become a load at each welding point. Absent.

[0019]

As described above, according to the present invention, the fitting seat shoulder projecting outward from the side portion of the bed is provided in the standard seat part integral with the bed, and the fitting seat shoulder part Since a hanging metal fitting that receives the load of the machine body at the receiving part is provided on the side of the bed, there is no need to remove the side cover that covers the spindle unit during crane lifting work, and it can be connected to the subsequent process and the number of man-hours can be reduced. In addition, the bolts and welding parts of the fixing means are not loaded, and a safe lifting structure is achieved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a machine tool according to the present invention as viewed in the direction of arrow A in FIG.

FIG. 2 is a side view of the machine tool.

FIG. 3 is a cross-sectional view showing a mounting structure of the hanging metal fitting of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a configuration diagram of a conventional machine tool as viewed in the direction of arrow A in FIG.

FIG. 6 is a side view of the machine tool.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Machine tool, 2 ... Bed, 3 ... Standard seat part, 4, 5 ... Spindle unit, 6 ... Work stand, 7 ... Side cover, 8 ... Cover mounting rib, 12 ... Wire, 13 ... Hanging metal fitting, 1
4 ... washer, 15 ... bolt.

Front page continuation (72) Inventor Toshinaga Maeda 1-1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd.

Claims (1)

[Claims] 1. A machine tool in which a working unit is installed on a standard seat on a bed and the working unit is covered with a side cover fixed to a side of the bed, wherein the standard seat is the bed. The side of the bed is attached to the side of the bed and the metal fitting is attached to the side of the bed by fitting the shoulder for mounting the metal fitting to the side of the bed and projecting the metal fitting mounting shoulder to directly or indirectly engage with the metal fitting mounting shoulder. A machine tool, wherein the machine tool is configured to be attached to the shoulder portion via fixing means inside the side cover and to be hung by a crane by the hanging metal fitting.