JP4152456B2 - Machine tool level adjuster - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a level adjusting device for a machine tool. More particularly, the present invention relates to a machine tool level adjusting device for adjusting the machine tool level in order to install the machine tool with high accuracy.
[0002]
[Prior art]
The bed of the machine tool is installed on the floor of the factory. At this time, the level must be adjusted so that the table or the like formed on the bed is accurately leveled. This level of adjustment is performed by support bolts. A screw hole for screwing a support bolt is formed on the lower surface of the bed. Processing these screw holes is heavy and requires a large bed to be inverted.
[0003]
For this reason, a structure is proposed in which a recess is formed on the lower surface of the bed, and the top of the support bolt is formed to be convex so as to engage with the recess, so that no screw hole is formed in the bed (Japanese Patent Laid-Open No. 4). -360737). However, in the above proposal, when the support bolt is rotated, the frictional force between the lower surface of the plate supporting the support bolt and the floor surface is weak, and the plate may slide and rotate, and the rotation of the plate must be restricted. I must. Moreover, since the operator who performs this work inserts a tool under the bed and works by lowering the body, it is difficult to adjust the support bolt. Unless the adjustment work is simplified, the operator is likely to get tired and time reduction is difficult.
[0004]
[Problems to be solved by the invention]
The present invention has been made based on the technical background as described above, and achieves the following object.
[0005]
An object of the present invention is to provide a level adjustment device for a machine tool in which the position adjustment of a support bolt for supporting a bed is simple.
[0006]
Another object of the present invention is to provide a level adjusting device for a machine tool having a structure that does not require the bed to be inverted for machining the lower surface of the bed.
[0007]
Still another object of the present invention is to provide a level adjusting device for a machine tool having a structure in which a support (adjusting) bolt and a level adjusting device base supporting the bolt do not rotate together when adjusting the supporting bolt.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the machine tool level adjusting apparatus of the present invention provides:
The machine tool in order to adjust installation on the floor in a horizontal state, the tool A machine of the leveling system of the machine tool which is provided at a plurality of positions of the bottom of the bed that comprises the body, the bed, the lower surface of In a plurality of locations, a substantially rectangular recess space is formed that is partitioned by a ceiling surface and a side surface, and the bottom surface is open , formed in at least one of the inlets of the recess space, and inclined in a direction in which the inlet side expands a guide surface, wherein the machine tool is placed on the floor surface to be installed, the concave space, and the level adjusting unit body insertable from the inlet side, is screwed into the level adjusting device substrate, head wherein An adjustment bolt that supports the ceiling surface of the recessed space so as to contact the ceiling surface of the recessed space and adjust the bed in the vertical direction, and at least one surface of the side surface of the recessed space, the adjustment Bo When rotating to adjust the door in the vertical direction, the level adjustment device substrates with at least one side surface formed in contact with, the level adjusting device substrate to rotate by rotating together with the adjusting bolt A rotation regulating surface means for regulating the adjustment bolt, and when the machine tool is installed and adjusted in a horizontal state by rotating the adjustment bolt and adjusting the bolt, the adjustment bolt And a locking member for fixing the level adjusting device base to the level adjusting device base so that the level adjusting device base can be inserted into the recessed space of the bed installed on the floor surface .
[0009]
An adjustment bolt engaging portion for engaging the head of the adjustment bolt (also referred to as a support bolt) is formed on the ceiling surface of the recessed space of the bed. The adjustment bolt engaging portion is formed in a concave shape that is recessed from the ceiling surface of the bed, and the concave shape is conical, spherical, elliptical, or has a V-shaped, U-shaped, T-shaped cross section, etc. It is formed with a groove.
[0010]
The head of the adjustment bolt has a convex shape, and the convex shape may be a convex portion such as a spherical shape, a conical shape, or an elliptical shape so as to match the shape of the groove. The adjustment (also referred to as support bolt) bolt may be fixed to the level adjustment device base with a lock nut. The level adjusting device base is formed with at least one flat surface in contact with the rotation restricting recess or the rotation restricting surface. The level adjusting device base is composed of a rectangular or circular plate or the like, and at least one plane is formed on a part thereof.
[0011]
The level adjusting device base is positioned with the flat surface in contact with the rotation restricting surface. The rotation restricting surface means is a rotation restricting recess which is a recessed space which is a recessed space defined as a space from the side surface to the inside of the bed, or a rotation restricting surface which is a single plane formed in a part of the bed. The rotation restricting surface is for the level adjusting device base to stop the adjusting bolt from rotating, and this is a plane composed of at least one surface formed on the bed.
[0012]
In the case of the rotation restricting recess, a tapered guide surface may be formed at the entrance so that the level adjusting device base can be easily inserted. The width of the rotation restricting recess is more effective when the level adjusting device base can be inserted and the width of the level adjusting device base does not rotate.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 of the Invention
Next, Embodiment 1 of the present invention will be described. FIG. 1 is an oblique projection of a bed showing Embodiment 1 of the present invention, FIG. 2 is an enlarged view of the bed support part of FIG. 1, and FIG. 3 shows a state where the bed support part is positioned at a predetermined position. FIG. 3 is a front view partially broken in that state. The bed 1 is a table made of a casting or a steel plate constituting the main body of the machine tool. A guide surface 2 for guiding a table or the like is provided on the bed 1. When the guide surface 2 is machined, a necessary machine is mounted on a table of a machine tool (not shown) for processing a bed by hanging a wire rope 4 on a hook 3 fixed to the bed 1 and hanging by a crane. Processing is done.
[0014]
FIG. 2 is an enlarged view of the bed support. The bed support portions 10 are arranged at a plurality of locations (for example, 4 locations in the first embodiment) on the lower surface of the bed 1. A recess space (rotation restricting recess) 12 is formed in the inner direction from the side surface 11 of the bed 1. The recessed space 12 is formed in a substantially rectangular parallelepiped having an open bottom surface. The inner side surface 13 of the recessed space 12 is formed to be substantially perpendicular to the side surface 11.
[0015]
A guide surface (formed on both sides in this embodiment) 14 inclined at least on one side is formed at the entrance of the recessed space 12. The deepest portion of the recessed space 12 is partitioned by a stopper surface 15. In addition, a substantially flat ceiling surface 16 is formed on the upper surface of the recessed space 12. After all, the recessed space 12 is a space defined by the guide surface 14, the inner side surface 13, the stopper surface 15, and the ceiling surface 16. A conical recess (for example, a conical hole having a diameter of 50 to 60 mm and a cone angle of 90 to 150 degrees) 17 is formed on the ceiling surface 16 so as to face upward.
[0016]
The conical recess 17 is a portion that contacts when the spherical head 21 of the support (also referred to as adjustment) bolt 20 supports the bed 1. The support bolt 20 is screwed into a support plate (level adjusting device base) 23 that is square in plan view. The size of one side of the support plate 23 is the dimension L. The dimension between the inner side surface 13 and the inner side surface 13 of the recessed space 12 is L ′, and there is a relationship of L <L ′.
[0017]
Therefore, the support plate 23 can be inserted between the inner side surface 13 and the inner side surface 13 of the recessed space 12. The support bolt 20 is locked to the support plate 23 by a lock nut 22. When the support plate 23 is inserted into the recessed space 12, the side surface 24 of the support plate 23 comes into contact with the stopper surface 15 and the rotation of the support plate 23 is restricted (see FIG. 3).
[0018]
That is, when rotating the support bolt 20, it is not necessary to perform an operation for restricting the rotation of the support plate 23. At this position, the support bolt 20 is turned to bring the head 21 into contact with the conical recess 17 to adjust the height of the bed 1. When the height adjustment is finished, the lock nut 22 is turned to fix the support bolt 20 to the support plate 23.
[0019]
[Embodiment 2 of the Invention]
FIG. 4 shows a second embodiment of the present invention, and is a front view of a part thereof. In the first embodiment of the invention, the head 21 of the support bolt 20 is received by the conical recess 17. In FIG. 4, the conical recess 17 is a spherical spherical recess 25. Compared to the first embodiment of the present invention, since the support area of the head 21 of the support bolt 20 is large, there is an effect that the head 21 of the support bolt 20 is less worn and can be stably supported.
[0020]
Embodiment 3 of the Invention
FIG. 5 is an oblique projection showing the third embodiment of the invention. A V support surface 30, which is an inverted V-shaped recess, is formed on the ceiling surface 16 of the recess space 12 from the entrance. Since the V support surface 30 is formed as far as the stopper surface 15, there is no need to push the support plate 23 into the stopper surface 15, and there is an advantage that the bed 1 can be supported at an arbitrary position.
[0021]
[Embodiment 4 of the Invention]
In the first, second, and third embodiments, the support plate 23 is inserted into the recess space 12 so as not to rotate when the support bolt 20 is rotated. In the fourth embodiment of the present invention shown in FIGS. 6A and 6B, the rotation of the support plate 23 is restricted by only one side surface formed on the bed 1. FIG. 6A is a front view with a partial cross section, and FIG. 6B is an arrow view of FIG. 6A, that is, a bottom view. As shown in FIGS. 6A and 6B, in order to restrict the rotation of the square support plate 23, only the rotation restricting surface 35, which is one flat surface formed on the bed 1, may be used.
The rotation of the support plate 23 is restricted by contacting only one surface, which is the side surface 23 a of the support plate 23, with the rotation restriction surface 35 formed on the bed 1. Moreover, although the shape of the support plate 23 is made into the square shape, it is not limited to this. The support plate 23 may have any shape as long as a side surface in contact with either the inner side surface 13 or the stopper surface 15 of the recessed space 12 is formed.
[0023]
7A, 7B, 7C, and 7D show forms of the support plate 23 having other shapes in which the side surface 23a is formed on the support plate 23. FIG. In FIG. 7A, the support plate 23 is formed in a disc shape, and a part of the support plate 23 is cut out to form a side surface 23a. In FIG. 7B, the support plate 23 is formed in a square shape, and a part of one corner thereof is cut out to form a side surface 23a.
[0024]
FIG. 7 (c), the support plate 23 is formed in a disk shape state, and are not set to the side surface 23a is cut away a part, in which the formation of the one side of the recessed space 12 as the rotation restricting surface 35 is there. FIG. 7 (d), the support plate 23 is formed in a disk shape, 2 of the Der which a part was cut out with the side surface 23a of the is, rectangular recessed space 12 formed at the corners of the bed 1 In this example, the surface is opened.
[0025]
In the first, second, and third embodiments, it is described that the support bolt 20 is fixed to the support plate 23 with the lock nut 22, but the screw portion of the support bolt 20 is a set screw screwed into the support plate 23. May be fixed by pressing directly or via a gold.
[0026]
[Other embodiments]
In the third embodiment of the present invention, the V support surface 30 that is an inverted V-shaped recess is formed on the ceiling of the recess space 12. However, as can be understood from the above description, other surface shapes such as a U-shape, other groove shapes such as a dovetail shape and a dovetail groove may be used. The head 21 of the support bolt 20 is also preferably formed so as to match these shapes.
[0027]
【The invention's effect】
As described in detail above, the present invention has effects such as easy adjustment of the position of the adjusting bolt, no need to invert the bed for machining the lower surface of the bed, and fewer bed processing steps. Further, the rotation of the level adjusting device substrate for supporting the adjustment bolt, is not to be around co Turn the adjustment bolt since stopped with the rotation restricting recess or rotation restricting surface formed on the bed.
[Brief description of the drawings]
FIG. 1 is an oblique axis projection view showing Embodiment 1 of the present invention.
FIG. 2 is an enlarged view of the bed support portion of FIG. 1;
FIG. 3 is a front view showing a state in which the bed support portion is positioned at a predetermined position and partially broken in that state.
FIG. 4 is a partially sectioned front view showing a second embodiment of the present invention.
FIG. 5 is an oblique projection view showing Embodiment 3 of the present invention.
FIG. 6 (a) is a partially sectioned front view showing a fourth embodiment of the present invention. FIG. 6B is an arrow view of FIG. 6A .
7A, 7B, 7C and 7D are bottom views showing other shapes of the support plate according to the fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Bed 2 ... Guide surface 10 ... Bed support part 12 ... Recess space 13 ... Inner side surface 15 ... Stopper surface 16 ... Ceiling surface 17 ... Conical recess 20 ... Support bolt 23 ... Support plate 25 ... Spherical recess 30 ... V support surface

Claims (5)

The machine tool in order to adjust installation on the floor in a horizontal state, a level adjusting device of a machine tool is provided at a plurality of positions of the bottom of the bed that comprises the body of the machine tool,
The bed is partitioned by a ceiling surface and a side surface at a plurality of locations on the lower surface, and is formed with a generally rectangular parallelepiped recess space with the bottom surface open ,
A guide surface that is formed in at least one of the inlets of the recessed space and is inclined in a direction in which the inlet side expands;
And the machine tool is placed on the floor surface to be installed, the concave space, insertable level adjusting device substrate from the inlet side,
An adjustment bolt that is screwed into the level adjustment device base, the head is in contact with the ceiling surface of the recessed space, and the bed is adjustable in the vertical direction, and supports the ceiling surface of the recessed space;
The level of at least one of the side surfaces of the recessed space is in contact with at least one side surface formed on the level adjusting device base when the adjustment bolt is rotated to adjust the vertical direction. A rotation restricting surface means for restricting the adjusting device base body from rotating together with the adjusting bolt ;
The adjusting bolt and disposed between said level adjusting device substrate, said adjustment bolt is rotated, when the machine tool is adjusted installed in a horizontal position, for securing the adjusting bolt to said level adjusting device substrate Of the lock member,
A level adjusting device for a machine tool , wherein the level adjusting device base can be inserted into the recessed space of the bed installed on the floor surface . The level adjusting device for a machine tool according to claim 1, wherein an adjustment bolt engaging portion for engaging a head of the adjustment bolt is formed on the ceiling surface of the recess space . The machine tool according to claim 2 , wherein the adjustment bolt engaging portion has a conical shape formed in a concave shape, and a head portion of the adjustment bolt has a convex shape that engages with the conical shape. Level adjustment device. 3. The adjustment bolt engaging portion according to claim 2 , wherein the adjustment bolt engaging portion has a groove shape that is formed in a concave shape and forms a predetermined angle, and a head portion of the adjustment bolt has a convex shape that engages with the groove shape. Machine tool level adjuster. 3. The machine tool according to claim 2 , wherein the adjustment bolt engaging portion has a conical shape formed in a concave shape, and a head portion of the adjustment bolt is a spherical head portion that engages with the conical shape. Machine level adjuster.

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