JP6492781B2 - Machine tool base and machine tool - Google Patents

Description

  The present invention relates to a machine tool base and a machine tool having the base.

  In general, a machine tool includes a rectangular parallelepiped base extending in the front-rear direction, and supports a column for supporting a spindle head and a table for placing a workpiece on an upper surface portion (support surface portion) of the base. Legs are provided at each of the four corners at the bottom of the base. A plurality of holes are arranged side by side on the left and right side portions of the base (see, for example, Patent Document 1).

JP 2013-252573 A

  When transporting a machine tool, a suspension rod is inserted into the holes provided in the front and rear end portions of the left and right side portions, that is, in the vicinity of each leg portion, and the inserted suspension rod is lifted by a wire and a crane. Then, the machine tool is transported to a desired position. However, there was a case where the position of the hanging rod was shifted during lifting.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a machine tool base and a machine tool that can position a suspension bar when the suspension bar is inserted into a hole.

  The base of the machine tool according to the present invention includes a column supporting the spindle head and a support surface supporting the table on which the work is placed, and two side surfaces protruding downward from mutually opposing edge portions of the support surface. A work provided with the first hole for reducing the weight and the second hole into which the rod is inserted, and a rib projecting downward between the lower surface of the support surface portion and the both side surface portions. In the machine base, the rib is arranged at a position facing the first hole in the axial direction of the first hole and not facing the second hole in the axial direction of the second hole. A recess is provided at a position along the axis of the second hole.

  In the base of the machine tool according to the present invention, the side surface portion includes an outer side surface portion, an inner side surface portion that is located on the inner side of the outer side surface portion and continues to the outer side surface portion, and the inner side surface portion. The second hole is provided, and the concave portion is provided in a lower edge portion of the outer side surface portion.

  The base of the machine tool according to the present invention is characterized in that the concave portion has a horizontal flat surface and an inclined surface inclined with respect to the flat surface.

  A machine tool according to the present invention includes the base of any of the machine tools described above, the spindle head, a column, and a table.

  In the present invention, since the rib is opposed to the first hole, the operator is prevented from erroneously inserting the rod into the first hole. When the rod is inserted into the second hole, the rod is positioned in the recess.

  In the present invention, since the concave portion is located along the axis of the second hole, when the operator looks at the second hole, the operator visually recognizes the concave portion at the same time, and the second hole is a hole into which the rod is to be inserted. You can recognize that there is.

  In the present invention, the positioning of the bar is realized by the flat surface and the inclined surface.

  In the base of the machine tool and the machine tool according to the present invention, since the rib is opposed to the first hole, it is possible to prevent the operator from erroneously inserting the rod into the first hole. Further, when the rod is inserted into the second hole, the rod can be positioned in the recess.

1 is a right side view schematically showing a machine tool. 1 is a front view schematically showing a machine tool. 1 is a perspective view schematically showing a main body of a machine tool. It is a right view which shows schematically the main body which inserted the hanging rod into the 2nd hole. It is the perspective view which looked at the base which inserted the suspension rod in the 2nd hole of the front side from the downward direction. FIG. 6 is an enlarged perspective view schematically showing a recess when a suspension rod is inserted into a second hole on the front side.

  Hereinafter, the present invention will be described based on the drawings showing a machine tool according to an embodiment. In the following description, up and down, left and right, and front and rear indicated by arrows in the figure are used. 1 is a right side view schematically showing a machine tool, FIG. 2 is a front view schematically showing the machine tool, and FIG. 3 is a perspective view schematically showing a main body of the machine tool.

  The machine tool includes a main body 100 and a machine cover 200 that covers the front side, the rear side, the left side, the right side, and the upper side of the main body 100. The main body 100 includes a rectangular base 1 extending forward and backward. The base 1 has a rectangular upper surface portion 20 (supporting surface portion) that is long in the front-rear direction, two side surface portions 21 that extend downward from the left and right edge portions of the upper surface portion 20 that face each other, and an upper surface portion. 20 includes a front surface portion 22 extending downward from a front edge portion and a rear surface portion 23 extending downward from a rear edge portion of the upper surface portion 20.

  An X-axis direction moving mechanism 8 that moves in the left-right direction is provided on the upper surface portion 20, and a Y-axis direction moving mechanism 9 that moves in the front-rear direction is provided above the X-axis direction moving mechanism 8. A columnar column 2 is erected on the Y-axis direction moving mechanism 9.

  When the X-axis direction moving mechanism 8 moves to the left and right, the column 2 moves to the left and right together with the Y-axis direction moving mechanism 9. When the Y-axis direction moving mechanism 9 moves back and forth, the column 2 moves back and forth.

  A first telescopic cover 8 a is provided above the X-axis direction moving mechanism 8 and on the left and right sides of the Y-axis direction moving mechanism 9. A second telescopic cover 9 a is provided on the upper side of the Y-axis direction moving mechanism 9 and on the rear side of the column 2. A front cover 9 b is provided on the upper side of the Y-axis direction moving mechanism 9 and on the front side of the column 2.

  A spindle head 4 is provided on the front surface of the column 2 so as to be movable up and down. A Z-axis feed motor (not shown) is provided at the top of the column 2, and the spindle head 4 moves up and down by the rotation of the Z-axis feed motor.

  A spindle 5 is mounted on the spindle head 4 so as to be rotatable around the axis. A spindle motor 6 for rotationally driving the spindle 5 is provided on the upper part of the spindle head 4. A tool is detachably attached to the lower end of the main shaft 5. The spindle 5 rotates and the tool rotates.

  A rotary table 7 (table) is provided below the spindle head 4 and on the base 1 so as to detachably fix the workpiece. The power of a table motor (not shown) is transmitted to the rotary table 7. The rotary table 7 rotates around a vertical axis (vertical axis) by driving a table motor. The rotary table 7 is provided with a work holding device (not shown). The work holding device holds a work.

  The spindle 5 moves between the upper exchange position and the lower machining position by the vertical movement of the spindle head 4. When the spindle 5 is at the change position, a tool changer (not shown) changes the tool. When the main shaft 5 is in the processing position, the tool held on the main shaft 5 processes the work held by the work holding device.

  A control device 30 is provided on the rear surface of the machine cover 200. The control device 30 controls driving of the spindle head 4, the spindle 5, the rotary table 7, the X-axis direction moving mechanism 8, and the Y-axis direction moving mechanism 9.

  As shown in FIG. 1, the front surface portion 22 has an outer front surface portion 22a and an inner front surface portion 22b positioned on the rear side (inner side) of the outer front surface portion 22a. The upper edge portion of the inner front surface portion 22b is located below the lower edge portion of the outer front surface portion 22a. The upper edge portion of the inner front surface portion 22b and the lower edge portion of the outer front surface portion 22a are connected via a first connection plate 31 that is inclined downward toward the rear. A central portion of the inner front surface portion 22b is formed with a U-shaped protruding portion having a depressed center in plan view.

  The right side surface portion 21 includes an outer side surface portion 21a and an inner side surface portion 21b positioned on the left side (inner side) of the outer side surface portion 21a. The outer side surface portion 21a and the inner side surface portion 21b are parallel. The outer side surface portion 21a includes a rear portion 21d having a rectangular shape extending in the front-rear direction, and a front portion 21c that is connected to the front portion of the rear portion 21d and has a shorter vertical dimension than the rear portion 21d. The front end portion and the rear end portion of the rear portion 21d are recessed to the left side. The front portion 21c has a trapezoidal shape with the front side and the rear side as upper and lower bases. The upper and lower positions of the upper side of the front part 21c are the same as the upper side of the rear part 21d and take a substantially horizontal posture. The lower side of the front part 21c is inclined downward and connected to the front side of the rear part 21d.

  The inner side surface portion 21b has a rectangular shape, and the rear side thereof is connected to the front side of the rear portion 21d via the second connecting plate 32. The second connecting plate 32 extends to the left and right and forms a right angle with the inner side surface portion 21b and the rear portion 21d. The front side of the inner side surface portion 21b is connected to the right side of the inner front surface portion 22b at a right angle.

  In the central portion of the rear portion 21d, three first holes 41 for weight reduction penetrating in the left and right directions are arranged side by side. Also in the front end portion of the rear portion 21d, a first hole 41 for weight reduction penetrating left and right is provided. A second hole 42 penetrating left and right where the suspension rod 70 should be inserted is provided in the rear end portion of the rear portion 21d. Moreover, the 2nd hole 42 penetrated to the left and right which should insert the hanging rod 70 is provided in the inner side surface part 21b. Since the left side part 21 has a symmetrical shape with the right side part 21, description thereof is omitted. The rear surface portion 23 is connected to the left and right side surface portions 21 at a right angle.

  A leg portion 1a is provided on each of the inner front surface portion 22b, the front end portion of the rear portion 21d, and the rear end portion of the rear portion 21d. The leg portion 1a is located in the recessed portion described above. The 2nd hole 42 provided in the inner side surface part 21b is located between the front side and the center leg part 1a. The second hole 42 provided in the rear end portion of the rear portion 21d is located in the vicinity of the rear leg portion 1a. The first hole 41 is located near the center leg 1a, between the center and rear legs 1a. The base 1 includes five legs 1a. The leg 1a is installed on the floor and the machine tool is installed at a predetermined location.

  Since the vertical dimension of the front part of the base 1 is shorter than the rear part, the front part of the base 1 is lighter than the rear part. Therefore, as shown in FIG. 1, the center of gravity G of the machine tool is located slightly behind the center in the front-rear direction. Further, as shown in FIGS. 1 and 2, the center of gravity G is located on the upper side as compared with the case where the vertical dimension of the front portion and the rear portion of the base 1 is the same.

  4 is a right side view schematically showing the main body 100 with the suspension rod 70 inserted into the second hole 42, and FIG. 5 is a perspective view of the base 1 with the suspension rod 70 inserted into the front second hole 42 as viewed from below. FIG. 6 is an enlarged perspective view schematically showing the recess 21e when the suspension rod 70 is inserted into the second hole 42 on the front side.

  The base 1 includes a plurality of plate-like ribs 24 extending in the front-rear direction and the up-down direction between the side surface portions 21 below the upper surface portion 20 and substantially perpendicular to the axis of the first hole 41. As shown in FIGS. 1 and 4, at least a part of the ribs 24 faces all the first holes 41 and the ribs 24 do not completely face all the second holes 42 in the left-right direction. When the suspension rod 70 is inserted into the first hole 41, the rib 24 prevents the insertion. When the suspension rod 70 is inserted into the second hole 42, the rib 24 does not hinder the insertion.

  A recess 21e is formed in the lower edge portion of the front portion 21c. The front-rear position of the recess 21e is substantially the same as the front-rear position of the second hole 42 on the front side, and is positioned immediately above the second hole 42 when viewed from the right or left side as shown in FIGS. In other words, the recess 21 e is located at a position along the axis of the second hole 42. As shown in FIG. 6, the recess 21e includes a substantially horizontal flat surface 21f extending in the front-rear direction and an inclined surface 21g inclined downward from the rear end portion of the flat surface 21f. The recess 21e has an L shape in side view.

  The conveyance of the machine tool will be described. When transporting the machine tool, the operator inserts the suspension rod 70 into the second holes 42 on the front side and the rear side, hangs a wire on the suspension rod 70 and the hook of the crane, and pulls it up. The hook is located almost directly above the center of gravity G. When three points are supported by the hook and the two second holes 42, the hanging rod 70 moves to the center of gravity G side. The front suspension rod 70 is engaged with the recess 21e, and the recess 21e positions the suspension rod 70.

  When the operator looks at the first hole 41 from the right side or the left side, the rib 24 is visually recognized to recognize that there is an obstacle. On the other hand, even when the second hole 42 is viewed, the rib 24 is not present. When the second hole 42 is viewed, the operator can simultaneously recognize the concave portion 21e and recognize that the second hole 42 is a hole into which the rod is to be inserted. Therefore, it is possible to prevent the operator from inserting the rod into the first hole 41 by mistake.

  The shape of the recess 21e is not limited to the L shape, and may be a U shape or a V shape when viewed from the side. Alternatively, the rear end portion of the rear portion 21d may have the same configuration as the front portion 21c, and the inner side surface portion 21b may be provided to form the concave portion 21e at a position corresponding to the second hole 42 on the rear side.

2 Column 4 Spindle head 7 Rotary table (table)
20 Upper surface (support surface)
21 side surface portion 21a outer side surface portion 21b inner side surface portion 21e recess 21f flat surface 21g inclined surface 24 rib 41 first hole 42 second hole

Claims (3)

Light weight is provided on the column supporting the spindle head and the support surface for supporting the table on which the work is placed, two side surfaces protruding downward from the opposite edge portions of the support surface, and the side surfaces. In a machine tool base comprising a first hole and a second hole into which a rod is inserted, and a rib projecting downward between the lower surface of the support surface portion and the side surface portions,
The rib is arranged at a position facing the first hole in the axial direction of the first hole and not facing the second hole in the axial direction of the second hole,
Oh Ri a concave portion is provided at a position along the axis of the second hole,
The side portion is
An outer side surface,
An inner side surface portion located on the inner side of the outer side surface portion and connected to the outer side surface portion;
Have
The second hole is provided in the inner side surface portion,
Base of the machine tool, characterized in Oh isosamples provided the recess in the lower edge portion of the outer side surface portion. The recess is
A horizontal flat surface;
The machine tool base according to claim 1, further comprising an inclined surface inclined with respect to the flat surface. A machine tool base according to claim 1 or 2 ,
A machine tool comprising the spindle head, a column, and a table.

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