JPH04111730A - Base supporting structure - Google Patents

Abstract

PURPOSE:To facilitate level adjustment of a base of a machine tool by providing the first supporting member for supporting the base in a lower central part in one end and the second/third supporting members in lower both side parts in the other end, of the base. CONSTITUTION:Supporting members 30, 31 are provided in a lower part frame 3 of a punch frame 2, and the supporting members 30, 31 are provided respectively in a rear end side lower central part of the lower part frame 3 and in front end both side parts of the lower part frame 3. A height position of a lateral frame 50 is adjusted by suitably tightening or loosening each nut 52 screwed to each mounting bolt 51 screwed to an inner case of each supporting member 30, 31. In the case of performing level adjustment of the punch frame 2 by suitably adjusting a tightening amount of the nut 52, height adjustment of the supporting member in three parts is only required, so that the level adjustment can be easily performed as compared with the case that the height adjustment is performed in four parts as in the past.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a base support structure, and particularly to a base support structure for supporting a base of a machine tool.

[Conventional technology and its problems]

Generally, when installing a machine tool on the floor, it is necessary to adjust the level of the base of the machine tool. For this reason, conventionally, support members are provided at four locations at the bottom of the base. The height of this support member can be adjusted by adjusting the amount of bolt tightening or adjusting shims. When adjusting the level of the base, adjust the tightening of the bolts for each of the support members. The height position of each support member is changed by adjusting the height and shims, thereby adjusting the level of the base.

However, conventionally, when adjusting the level of the base, it is not easy to adjust the height positions of all four support members, and level adjustment is very troublesome.

An object of the present invention is to provide a base support structure that allows easy level adjustment of the base of a machine tool.

[Means to solve the problem]

A base support structure according to the present invention is a structure for supporting a base of a machine tool, and includes a first support member, a second support member, and a second support member. and a third support member.

The first support member is provided at a lower central portion of one end of the base, and is for supporting the base. Said 2nd.
The third support parts 10A are provided on both sides of the lower part of the other end of the base, and support the base.

[Function] In the base support structure according to the present invention, the first support member provided at one end of the base, and the second support member provided at the other end of the base.
．． The base of the machine tool is supported by the third support member. When adjusting the level of the base, use the first and second
．． By adjusting the height of the third support member, the rails of the base are adjusted.

Therefore, compared to the conventional case where the heights of four support members are adjusted, the adjustment work is simplified, and thereby the level of the base can be easily adjusted.

[Embodiment] FIG. 4 shows a punch press machine as a machine tool in which an embodiment of the present invention is adopted.

In FIG. 4, a punch press machine 1 has a punch frame 2 formed in a U-shape. punch frame 2
is composed of an F section frame 3 placed on the north side of the floor, an upper frame 4 placed above it, and a throat part 5 that supports these at the rear.

An upper turret 6 is rotatably provided at the lower part of the upper frame 4. As shown in FIG. 1B, the upper turret 6 is connected via a central shaft 7 to a rotational drive mechanism including a motor and the like provided within the upper frame 4. As shown in FIG. The upper talent 6 is a generally disc-shaped member, and has a plurality of holes formed on its circumference. A punch 8 is installed in each of these holes. Furthermore, a crank machine fJIO is provided within the upper frame 4. This crank mechanism 10 is driven by a motor (not shown). A ram 11 that can be raised and lowered is connected to the lower part of the crank mechanism 10. The lower part of the ram 11 is connected to the upper part of the punch 8 arranged below. With this configuration, the punch 8 is driven up and down.

On the other hand, a lower talent 12 is similarly rotatably provided on the upper part of the lower frame 3 at a position opposite to the upper turret 6. A plurality of dies 13 are arranged circumferentially on the lower turret 12. A processing head P is formed by the punch 8 and the die 13 below the ram 11.

A table device 15 is installed on the floor in front of the punch frame 2.
is located. A fixed table 16 is arranged at the center of the upper surface of the table device I5. Table device 1
A pair of guide rails 17 and 18 are arranged on both sides of the top surface of the 5. A carriage 19 is disposed on the guide rails 17, 18 so as to be movable in the depth direction (X-axis direction). Moving tables 20 and 21 are fixed to the carriage 19 and are arranged on both sides of the fixed table 16. A work holder (not shown) for gripping the plate material W is provided on the carriage 19 so as to be movable in the left-right direction (X-axis direction).

The lower frame 3 of the mushroom punch frame 2 is provided with support members 30, 3 as shown in FIGS. 1A and 1B. The support member 30 is provided at the lower central part of the rear end side of the lower frame 3 (left side in Figure 1), and the support member 31
are provided on both sides of the front end of the lower frame 3, respectively. Note that although the support member 30 is a larger member than the support member 31, both have similar configurations, so the support member 30 will be described below.

As shown in FIG. 2, the support member 30 has an inner case 40 and an outer case 41 mounted on the inner case 40 so as to be movable up and down. A bottom plate 42 is fixed to the lower part of the inner case 40. The bottom plate 42 is screwed onto a floor surface 44 via a rubber plate 43.

A circumferential groove 45 is formed in the inner case 40 .

A cushion material 46 made of an elastic material is installed in the groove 45. Furthermore, a female threaded portion is formed in the center of the inner case 40. On the other hand, a convex portion 47 is formed on the outer case 41 at a position facing the groove 45 of the inner case 40 . This convex portion 47 is movable in the vertical direction within the groove 45.

A horizontal frame 50 of the lower frame 3 is mounted on the upper part of the outer case 41 via a shim 49.

The shim 49 is for adjusting the height position of the horizontal frame 50. For attachment from above the horizontal frame 50, bolts 51 are inserted through the horizontal frame 50 and the outer case 41. In this installation, the lower part of the bolt 51 is screwed into the female thread 48 of the inner case 40. Further, for installation, a nut 52 is screwed into a bolt 51. The lower part of the nut 52 is in contact with the upper part of the horizontal frame 50. In addition, on the support member 31 side, flange portions 55 that protrude on both sides of the lower frame 3 are provided as equivalent to the horizontal frames 50 of the support members 30 examples.

When installing the haunch frame 2 and carrying out the leveling process, first fix each of the support members 30 and 31 on the floor surface 44. In this case, the bottom plate 42 of each support member 3.degree. 31 is screwed onto the floor surface 44 via the rubber 43. Next, the punch frame 2 is placed on each support member 30, 31 using a crane or the like. At this time, a shim 49 is inserted between the outer gauge 41 of each support member 30 and 31 and the horizontal frame 50 of the lower frame 3. This shim 49 performs rough positioning of the punch frame 2 in the height direction.

Next, from above the horizontal frame 50, each support member 30, 31
For installation, insert the bolt 51, and for installation, screw the pole 1-51 into the inner case 4° of each support member 30, 31. Each installation is done by tightening or loosening each Nand 52 screwed onto the pole 1-51 as appropriate.
Adjust the height position. That is, when the nut 52 is tightened, the convex portion 47 of the outer case 41 gradually compresses the cushioning material 46 in the inner case 40, thereby gradually lowering the horizontal frame 50. Also, from this state, Natsu 52
When loosened, the repulsive force of the cushion material 46 in the compressed state causes the cushion material 46 to push up the convex portion 47 of the outer case 41, thereby gradually raising the horizontal frame 50. In this manner, the level of the punch frame 2 can be adjusted by appropriately adjusting the tightening position of the nut 52.

In this case, since the height of the support member only needs to be adjusted at three locations, the level of the punch frame 2 can be easily adjusted compared to the conventional method where the height is adjusted at four locations.

At the bottom of the lower frame 3, a positioning device 60, 61 as shown in FIGS. 1A and 1B is provided. The positioning device 60 is located at the center of the rear end of the lower frame 3, and the positioning device 61 is located at the center of the lower frame 3.
are located on both sides of the front end.

The positioning device 60 has a generally triangular block 70. This block 70 is fixed to the side surface of the horizontal frame 50 with screws 71.

Adjustment mechanisms 72, 73 are provided on both sides of the block 70. Each adjustment mechanism 72 , 73 is provided on a plate 74 fixed on the floor 44 . Each adjustment machine +
172, 73 each have an L-shaped plate 75 fixed on plate 74. Each letter shaped plate 7
An adjusting screw 76 is screwed into the vertical wall portion 75a of No. 5. An abutment piece 77 is rotatably attached to the tip of each adjustment screw 76, respectively. These abutting pieces 77 are adapted to abut on two diagonal surfaces 7°a of the triangular block 70, respectively.

As shown in FIG. 3, the positioning device 61 has a plate 82 having orthogonal vertical walls 80,81. The plate 82 is screwed onto a plate 83 provided on the floor surface 44.

Further, the plate 83 is fixed onto the floor surface 44 by screws 84. Adjustment screws 85.86 are screwed into each vertical wall portion 80.81 of the plate 82, respectively. An abutment piece 87 is provided at the tip of the threaded portion of each adjustment screw 85, 86.
, 8B (see Figures 1A and B) are rotatably attached. The contact pieces 87 are capable of contacting both sides of the lower frame 3. Further, the contact pieces 88 are adapted to come into contact with the side surfaces of the flange portion 55 on both sides of the lower frame 3. Note that each adjustment screw 85 and 86 is screwed with a slot 89, respectively. This nut 89 is for fixing each adjustment screw 85, 86 to the vertical portion 80, 81, respectively.

When positioning the punch frame 2 at a predetermined position on the floor surface 44, first, the protrusion amount of each adjustment screw 76 of the positioning device 60 is adjusted to a predetermined amount. Next, the punch frame 2 is placed on each support member 30.31 using a crane or the like, and the block 70 is inserted between each adjustment mechanism 72.73. At this time, since the block 70 is formed in a triangular shape, it can be easily inserted between the adjustment mechanisms 72 and 73.

Next, the amount of protrusion of each adjustment screw 85, 86 of each positioning device 61 is adjusted appropriately to move the punch frame 2 backward (first A
When moved to the left side of the first BIIZ in FIG.
comes into contact with. As a result, the positioning of the rear end of the punch frame 2 in the left-right direction (vertical direction in FIG. 1A) and the front-back direction of the punch frame 2, that is, the centering of the rear end of the punch frame 2, is performed. From this state, adjust the protrusion amount of each adjustment screw 85 of each positioning device 61 as appropriate,
The front end of the punch frame 2 is positioned in the left-right direction, that is, the entire punch frame 2 is centered.

In this case, the positioning work is simplified compared to the conventional case where positioning is performed using four positioning devices installed on both sides of the front and rear ends of the punch frame 2. 2. Positioning can be easily performed.

[Other Examples]

(a) In the above embodiment, the present invention was applied to a punch frame of a punch press machine, but
The present invention can be applied not only to punch press machines but also to other machine tools.

(b) In the embodiment described above, the positioning device 60 is provided in the lower central part of the lower frame 3. However, the application of the present invention is not limited to this.

As the positioning device 60, positioning devices having the same configuration as the positioning device 6I may be arranged on both sides of the rear end side of the punch frame 2.

(C) The mounting pole 1-51 is screwed onto the outer case 41 to integrate the horizontal frame 50 and the outer case 41, and the outer case 41 is attached to the inner case 40 in which the female part 48 in the above embodiment is omitted. may be placed externally.

[Effects of the Invention] In the base support structure according to the present invention, the first, second, and third
Since the rails of the base can be adjusted by adjusting the height of the support member, it is easier to adjust the level of the base compared to the conventional adjustment using four support members. can.

[Brief explanation of the drawing]

FIG. 1A is a partially cutaway plan schematic diagram of an embodiment of the present invention;
FIG. 38 is a partially cutaway schematic side view thereof, FIG. 2 is a schematic front view of the support member constituting the above embodiment, and FIG.
FIG. 4 is a schematic cross-sectional view taken along If-III in the figure, and FIG. 4 is an external perspective view of a punch press machine in which the base support structure is adopted. 1... Punch press machine, 2... Punch press machine,
3... Lower frame, 30.31... Support member, 5
゜Horizontal frame. Patent applicant Yukio Ono, representative of Murata Machinery Co., Ltd., patent attorney

Claims (1)

[Claims] (1) A base support structure for supporting a base of a machine tool, comprising: a first support member provided at a lower central portion of one end of the base and supporting the base; and both lower sides of the other end of the base. A base support structure comprising: second and third support members that are respectively provided at the parts and support the base.