JP2013223906A - Machine tool and leveling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform leveling work, while reducing and simplifying the displacement of a moving construction.SOLUTION: A table 2 and a column 3 are mounted on a T-shaped bed 1 so as not cross each other. A first support point A point and a second support point B point are formed at both end sides of a machine body on a load center line XG along the X-axi direction of the table 2. A third support point C point is formed at the rear side end of the machine body on a load center line YG along the Y-axis direction of the column 3. Then, a fourth support point J point is formed at a cross point between the load center line XG and the load center line YG. The leveling device 9 comprises a first level adjusting base member 10 attached to the bed 1 and a second level adjusting base material 20 not attached to the bed 1. The second level adjusting base material 20 is positioned at the fourth support point J point by using a beam material 25, and the second level adjusting base material 20 is positioned and firmly arranged at a prescribed position by attaching an attachment material 26 to the front face of the bed 1.

Description

  The present invention provides a first moving structure that moves in a first horizontal uniaxial direction on a T-shaped substructure and a second horizontal uniaxial direction that is orthogonal to the first horizontal uniaxial direction. The present invention relates to a machine tool and a leveling method including a leveling device that adjusts a horizontal level in order to install a machine body horizontally in a machine tool that is independently mounted without being stacked with a second moving structure that moves to the right.

  In a machine tool that is a metal processing machine that precisely processes a workpiece made of metal, a plurality of structures are disposed on a bed that is a foundation structure. The main structure that is a basic component of the airframe excluding the bed includes a fixed structure fixed on the bed and a moving structure that is movably mounted on the bed. The tool and workpiece are attached to the main structure directly or indirectly. For this reason, whether or not the bed is correctly installed has a significant influence on the machining accuracy at the machining site.

  The bed has a plurality of support substrates for mounting the airframe. In installing the airframe, there are a case where the supporting base material is simply placed on the floor and a case where the supporting base material is fixed to the floor with anchor bolts. Since it cannot be expected that the floor of the factory is level enough to exceed the required processing accuracy, it is inevitable that the aircraft will be inclined with respect to the horizontal plane in any case.

  Therefore, a general machine tool is configured such that one or more support base materials can be arbitrarily changed in the vertical direction (vertical direction). Hereinafter, the support base material whose length can be changed in the vertical direction is referred to as a level adjustment base material, and the portions that determine the height of the support base material including the level adjustment base material are simply collectively referred to as legs. The leveling device is composed of a plurality of level adjustment base materials provided on the bed, and can adjust the level of the machine body by adjusting the heights of the legs of the plurality of level adjustment base materials.

  In design, the plurality of support points that support the airframe are basically arranged so as to receive the load applied to the bed on an average in a distributed manner. For example, as shown in Patent Document 1, when the bed has a quadrangular shape, the airframe is supported at least at three points on the plane, and the height from the floor surface to the lower surface of the bed is set at each support point. It is known that the aircraft can be supported horizontally by adjusting. The fewer the support points, the easier the leveling work. In other words, the structure that supports the aircraft at three points is ideal.

  However, in the case of a relatively large machine tool, if the structure supports the machine body with only three points, the bed is bent due to the load of the moving structure including the workpiece mounted on the bed. Although the bed stiffness can be increased to withstand the load, it is undesirable because the amount of material forming the bed and the weight of the bed increases too much. In addition, for example, a moving structure such as a table or a saddle is required to have a corresponding rigidity, so that there is a limit to the weight reduction of the moving structure.

  Patent Document 2 discloses an electric processing machine in which a support point is provided at a position corresponding to the center of gravity of all main structures. According to the invention of Patent Document 2, in the case of a machine tool having a structure in which the planar shape of the bed is a quadrangle and the moving structure is arranged so as to overlap vertically, the bed is bent due to the load of the moving structure. Is reduced, and the displacement of the moving structure is effectively reduced. If the number of support points is 5 or more, the leveling work becomes considerably difficult. However, the electromachining machine of Patent Document 2 has four support points, which is excellent in that the leveling work is relatively easy. .

  However, the plurality of level adjusting base materials of the leveling device are configured to adjust the height of the legs by the operator turning the leveling bolt, as typically shown in, for example, Patent Document 3. . For this reason, in general machine tools, the machine body is designed so as not to provide a support point where it cannot be reached by the operator. In addition, in the invention of Patent Document 2 in which a support point is provided where the operator's hand does not reach, the height of the leg of the level adjustment base material can be adjusted by an actuator, thereby enabling leveling work.

  However, the plane shape of the bed is T-shaped, and the first moving structure that moves in the horizontal uniaxial direction (X-axis direction) is mounted on the front side of the bed body, and orthogonal to the X-axis direction on the rear side of the bed body. In the case of a machine tool in which another second moving structure that moves in the horizontal one-axis direction (Y-axis direction) is mounted independently without being loaded on the first moving structure, Patent Document 2 If the airframe is supported at four points as disclosed, the support points are insufficient, and in particular, a moving structure moving in the X-axis direction causes complicated displacement due to rolling.

  For example, in a machine tool equipped with a table 2 and a column 3 that move to the bed 1 as shown in FIG. 4, if the machine body is supported by only three ABC points, the column 3 moves toward the front of the machine body. When moved, the center of the bed 1 is bent by the load of the column 3. At this time, if the support base is provided at point D corresponding to the approximate center of the bed 1 as the “center of gravity” where the loads of all the main structures are concentrated, the bed is supported by the four points ABCD. It can be seen that the bending of the bed 1 at the center D of 1 is suppressed.

  However, since the load of the table 2 is substantially received at the three ABD points, rolling occurs in the table 2. As a result, a complicated displacement is given to the table 2 so that the position error cannot be corrected by the control. At this time, a support point is provided at point E on the front end of the airframe facing the center D point, and the load of the table 2 is received at four points of the ABDE point, thereby suppressing the occurrence of rolling in the table 2. Can do. However, since the supporting points are five points of ABCDE, leveling work becomes difficult.

  The invention of Patent Document 4 includes a level adjustment base material that supports the airframe at three basic support points, and a floating support base material that supports the load of a moving structure moving in the X-axis direction at four points. Proposes a method for supporting the aircraft. For example, in the case of the machine tool shown in FIG. 4, support points are provided at seven ABCDEFG points. As a result, the respective loads on the table 2 and the column 3 can be received on an average basis, so that the displacement of the table 2 and the column 3 can be suppressed and the displacement can be simplified.

Japanese Utility Model Publication No. 3-18103 (page 1) JP 60-213444 A (2nd page) Japanese Utility Model Publication No. 63-73292 (FIG. 1) JP-A-2-218530 (page 2)

  In a machine tool in which the first moving structure and the second moving structure are independently mounted on a T-shaped bed so as not to intersect, the displacement of the moving structure is increased by increasing the number of support points. Although the displacement can be reduced and the displacement can be simplified, the support point increases and the leveling operation becomes extremely difficult. In particular, when a support point is present in the back of the bed where the operator's hand does not reach, a level adjusting base material having power that can be operated remotely is required. Moreover, since it is necessary to operate a plurality of level adjusting base materials by mixing power operation and manual operation, the leveling work becomes more difficult.

  The present invention provides a second moving structure in which the first moving structure is mounted on the front side of the body of the T-shaped foundation structure and moved in the second horizontal uniaxial direction on the rear side of the body of the foundation structure. In the machine tool mounted so as not to intersect the first moving structure, the displacement of each moving structure can be reduced and the displacement can be simplified, and the leveling operation can be performed relatively easily. The main object is to provide a machine tool and a leveling method that can be used. Some advantages of the present invention are explained in detail in the description of the embodiments of the present invention.

  In order to achieve the above object, the machine tool of the present invention has a first moving structure that moves in the first horizontal uniaxial direction (X) in front of the machine body of the T-shaped foundation structure (1). A second moving structure (2) mounted and moved in a second horizontal uniaxial direction (Y) orthogonal to the first horizontal uniaxial direction (X) on the rear side of the body of the foundation structure (1) ( In the machine tool on which 3) is mounted so as not to intersect the first moving structure (2), the first load along the first horizontal uniaxial direction (X) of the first moving structure (2) The first horizontal support point (A) and the second support point (B) provided on both ends of the airframe on the center line (XG) and the second horizontal uniaxial direction of the second moving structure (3) ( Under the substructure (1) respectively corresponding to the third support point (C) provided at the rear end of the fuselage on the second load center line (YG) along Y) A first level adjusting base material (10) which is arranged at a fixed position and can adjust the height of the foundation structure (1) at each position, a first load center line (XG) and a second load center line (YG) is arranged at a predetermined position below the foundation structure (1) corresponding to the fourth support point (J) provided at the intersection with (YG), and the height of the foundation structure (1) is adjusted at that position. A second level adjusting base material (20) that can be made, and the second level adjusting base material (20) rotates around the axis to the pedestal (21) that contacts the floor surface horizontally and the pedestal (21) A leveling bolt (22) that can be mounted and can be arbitrarily adjusted in the vertical direction, a lock nut (23) that is screwed to the leveling bolt (22), and one end (25A) is a lock nut (23 ) Integrally connected to the front end of the foundation structure (1) from the lock nut (23). A beam member (25) having a length (L) and an attachment member (26) provided at the other end (25B) of the beam member (25) for attaching and fixing the beam member (25) to the foundation structure (1). And a leveling device (9) comprising:

  Further, another machine tool of the present invention has a first moving structure (2) that moves in the first horizontal one-axis direction (X) on the front side of the body of the T-shaped foundation structure (1). A second moving structure (3) that is mounted and moves in the second horizontal uniaxial direction (Y) perpendicular to the first horizontal uniaxial direction (X) is mounted on the rear side of the body of the foundation structure (1). The first load center line (XG) along the first horizontal one-axis direction (X) of the first moving structure (2) in the machine tool mounted so as not to intersect the moving structure (2) of 1 ) Along the first horizontal support axis (Y) of the first and second support points (A) and (B) and the second moving structure (3) provided on both ends of the upper body. The second support center line (YG) is located at a predetermined position below the substructure (1) corresponding to the third support point (C) provided at the rear end of the airframe. The intersection of the first level adjusting base material (10) capable of adjusting the height of the foundation structure (1) at each position, the first load center line (XG) and the second load center line (YG) The second level adjustment is arranged at a predetermined position below the foundation structure (1) corresponding to the fourth support point (J) provided on the base plate, and the height of the foundation structure (1) can be adjusted at that position. The second level adjusting base material (20) is a base (21) that is horizontally grounded on the floor surface, and is vertically mounted on the base (21) so as to be rotatable about an axis. The leveling bolt (22) whose length in the direction can be arbitrarily adjusted, and both sides of the upper surface (23A) screwed to the leveling bolt (22) are chamfered along the second horizontal uniaxial direction (Y). A locking nut (23), and a leveling device (9) comprising a foundation structure So that (1) the lower surface (1C) to guiding to position the second level adjustment base (20) to the predetermined position guide (1D) is formed.

  In the leveling method of the present invention, the first moving structure (2) moving in the first horizontal one-axis direction (X) is mounted on the front side of the body of the T-shaped foundation structure (1). The second moving structure (3) that moves in the second horizontal uniaxial direction (Y) orthogonal to the first horizontal uniaxial direction (Y) on the rear side of the body of the object (1) is the first moving structure. In the leveling method of the machine tool mounted so as not to intersect the object (2), the first load center line (XG) along the first horizontal one-axis direction (X) of the first moving structure (2) A first support point (A) and a second support point (B) are provided at both ends of the upper body, and the second moving structure (3) is along the second horizontal uniaxial direction (Y). A third support point (C) is provided at the rear end of the airframe on the second load center line (YG), and the first load center line (XG) and the second load center line are provided. A fourth support point (J) is provided at the intersection with YG), and a level adjustment base material is provided at each support point (A, B, C, J) to adjust the horizontal level of the aircraft. To do.

  More specifically, the leveling method of the present invention is fixed to the substructure (1) at the first support point (A), the second support point (B), and the third support point (C). Adjusting the vertical length of the first level-adjusting base material (10) to level the airframe, and colliding the second level-adjusting base material (20) with the foundation structure (1) And a second level adjustment base so as not to lose the levelness of the airframe, and a step of placing the base structure (1) below the base structure (1) corresponding to the fourth support point (J). And operating the material (20) to bring the second level adjusting base material (20) into contact with the lower surface of the foundation structure (1).

  In addition, the said code | symbol corresponds with the code | symbol of drawing. However, they are given for convenience of explanation, and the present invention is not limited to the machine tool and the leveling method of the embodiment.

  In the machine tool of the present invention, the first level adjusting base material is disposed at each of the support points provided at the both side ends and the rear end of the body, and the first moving structure and the second moving structure are provided. Since the fourth support point is provided at the intersection of each load center line and the second level adjustment base material is disposed, the structure that receives the load of each moving structure only at the support point existing on each load center line It is. As a result, the bending of the foundation structure can be suppressed, the displacement of each moving structure can be reduced, and no rolling occurs in the first moving structure, thereby simplifying the displacement of each moving structure. Can do. Further, since there are four support points for adjusting the horizontal level, the leveling operation is relatively easy.

  And the 2nd level adjustment base material is connected with a lock nut, and has the beam material which has the length to the front end of a foundation structure, and the beam material provided in the other end of the beam material is used for the foundation structure. Since the mounting material is attached to the front surface and fixed, the second level adjusting base material can be positioned, fixed, and operated at the fourth support point that cannot be reached by the operator. Therefore, a level adjustment base material having a power source such as an actuator is unnecessary. As a result, the structure of the leveling device is simpler, easier to manufacture and relatively inexpensive. Further, since the horizontal level can be adjusted only by manual operation by the operator, leveling work does not become difficult.

  Further, in another machine tool of the present invention, in particular, the operator can reach only by pushing the lock nut of the second level adjustment base material deeply in accordance with the guide formed on the lower surface of the foundation structure. Since the second level adjusting base material can be positioned, fixed and operated at the fourth support point that is not present, the operation of fixing the second level adjusting base material is easier. In addition, since the second level adjusting base material does not have an attachment for fixing the second level adjusting base material at a predetermined position under the foundation structure, the structure of the leveling device is further simplified.

  Since the leveling method of the present invention receives the load of each moving structure at the support point on each load center line of each moving structure, the displacement of each moving structure can be reduced and the first moving structure can be reduced. Complex displacement due to rolling does not occur in the object, and the displacement of each moving structure can be simplified. Further, since the support points are 4, the leveling work is relatively easy. The foundation structure is leveled at the support point at the rear end of the aircraft and the basic three support points at both ends of the aircraft, and the level adjustment base is positioned at the intersection of each load center line of each moving structure. The leveling work is relatively easy because it only touches the lower surface of the structure.

It is a top view which shows the outline | summary of the body of the machine tool of this invention. It is a side view which shows the structure of the level adjustment base material of 1st Embodiment. It is a side view which shows the structure of the level adjustment base material of 2nd Embodiment. It is a top view which shows the general outline of the body of the conventional machine tool.

  FIG. 1 shows an arrangement of main structures of the machine tool of the present invention. The machine tool shown in FIG. 1 is equipped with a first moving structure that moves in the first horizontal one-axis direction (X-axis direction) on the front side of the body of the T-shaped foundation structure. A machine tool in which a second moving structure that moves in the second horizontal one-axis direction (Y-axis direction) orthogonal to the X-axis direction is independently mounted on the rear side of the machine body so as not to intersect the first moving structure. It is an example. 1, the lower side is the front side of the aircraft, the right side is the right side of the aircraft, the left side is the left side of the aircraft, and the upper side is the rear side of the aircraft.

  The machine tool of the embodiment shown in FIG. 1 is specifically this machine (machine part) of a numerically controlled wire-cut electric discharge machine. The main structures that are the basic components of the airframe are a bed 1, a table 2, a column 3, a column upper portion (ram) 4, a slider 5, and a machining head 6. The present invention is not limited to the same structure as each main structure in the machine tool shown in FIG. For example, the airframe can be designed by replacing the column 3 with another moving structure having a structure different from that of the column 3, such as a saddle.

  The bed 1 is a fixed structure installed on the floor, and is a foundation structure on which other main structures are mounted. The bed 1 has a T-shaped planar shape. The bed 1 is formed of a casting. The bed 1 has a rib structure. Two guide rails 1A of the linear guide are laid in parallel on the upper surface of the bed 1 along the X-axis direction. Further, two guide rails 1B of the linear guide are laid in parallel on the upper surface of the bed 1 along the Y-axis direction.

  The table 2 is mounted on the front side of the body of the bed 1 and is a first moving structure that can reciprocate in the X-axis direction. The table 2 is formed of a casting or ceramic. A plurality of linear guide bearings (not shown) are provided on the lower surface of the table 2, and the table 2 is guided by the guide rail 1A and moves in the X-axis direction. The table 2 is driven by a rotary servo motor or an AC synchronous linear motor. The table 2 is provided with a work stand which is a work mounting base (not shown). The table 2 is provided with a processing tank or a splash guard as necessary.

  The column 3 is mounted on the rear side of the bed 1 so as not to overlap the table 2 reciprocating in the X-axis direction, in other words, reciprocating in the Y-axis direction without intersecting the table 2. It is a moving structure. The column 3 is formed of a casting. Column 3 has a rib structure. A plurality of linear guide bearings (not shown) are provided on the lower surface of the column 3, and the column 3 is guided by the guide rail 1B and moves in the Y-axis direction. The column 3 is driven by a rotary servo motor or an AC synchronous linear motor.

  The ram 4 is a moving structure that is mounted on the upper surface of the column 3 and reciprocates in the V-axis direction parallel to the Y-axis direction. The slider 5 is a moving structure that is attached to the front surface of the ram 4 and reciprocates in the U-axis direction parallel to the X-axis direction. The processing head 6 is a moving structure that is attached to the slider 5 and can reciprocate in a vertical one-axis direction (Z-axis direction) orthogonal to the X-axis direction and the Y-axis direction. The Z-axis direction is the main axis in the wire cut electric discharge machining apparatus.

  In the machine tool of the embodiment which is a wire cut electric discharge machine, the end of the lower arm 7 is fixed to the lower side of the front surface of the column 3. Therefore, the lower arm 7 moves in the Y-axis direction as the column 3 moves. A lower wire guide for guiding a wire electrode which is a wire cutting tool is provided at the tip of the lower arm 7.

  An upper arm 8 is fixed to the lower end of the processing head 6. Therefore, the upper arm 8 moves in the V-axis direction as the ram 4 moves, moves in the U-axis direction as the slider 5 moves, and moves in the Z-axis direction as the machining head 6 moves. An upper wire guide for guiding the wire electrode is provided at the tip of the upper arm 8. The machining head 6 is provided with an automatic connection device (not shown) unique to a wire cut electric discharge machine that automatically stretches a wire electrode.

  The ram 4 and the slider 5 constitute a taper device that displaces the horizontal relative positions of the upper wire guide and the lower wire guide to incline the wire electrode at a predetermined angle. The machining head 6 changes the distance between the upper wire guide and the lower wire guide by displacing the vertical relative positions of the upper wire guide and the lower wire guide. In the machine tool of the embodiment, the column 3 includes the column 3 and the ram 4, and the upper arm includes the slider 5 and the machining head 6.

  The leveling device 9 is provided under the bed 1. The leveling device 9 includes three first level adjustment base materials 10 and only one second level adjustment base material 20. Each level adjusting base material is distributed on a plane so as to support the bed 1 between the floor surface and the bed 1. Each level adjustment base material is a support base material that supports the airframe, and is a support base material that can adjust the length in the vertical direction. In particular, the first level adjustment base material 10 is a support base material that is fixedly attached to the bed 1. On the other hand, the second level adjusting base material 20 is a supporting base material that is not attached to the bed 1 before the leveling operation.

  The first level adjusting base material 10 includes a first support point A and a second support provided on both side ends of the machine body on the first load center line XG along the moving direction (X-axis direction) of the table 2. Predetermined under the bed 1 respectively corresponding to the point B and the third support point C provided at the rear end of the machine body on the second load center line YG along the moving direction (Y-axis direction) of the column 3 The height of the bed 1 can be adjusted at each position. The second level adjusting base material 20 is arranged at a predetermined position below the bed 1 corresponding to the fourth support point J provided at the intersection of the first load center line XG and the second load center line YG. And the height of the bed 1 can be adjusted at that position.

  Here, the load center line means a horizontal straight line passing through the center of gravity of the structure. In particular, a straight line along the moving direction of the moving structure passing through the center of gravity of the moving structure is shown. In the machine tool of the embodiment, the first load center line XG along the X-axis direction of the table 2 coincides with the movement control axis X of the table 2. Further, the load center line YG along the Y-axis direction of the column 3 coincides with the movement control axis Y of the column 3.

  FIG. 2 shows a side surface of the level adjustment base material of the leveling device in the machine tool according to the first embodiment. FIG. 2A shows the configuration of the first level adjustment substrate. FIG. 2B shows the configuration of the second level adjustment substrate. FIG. 2B also shows the front of the attachment material of the second level adjustment base material. The first level adjustment base material does not need to have a configuration specifically shown below, and a conventionally known level adjustment base material having a pedestal on the floor and having no power source is applied. Can do.

  The first level adjusting base 10 mainly includes a pedestal 11, a leveling bolt 12, and a lock nut 13. The first level adjustment base material 10 is fixed to the lower surface of the bed 1. In particular, the first level adjusting base material 10 is fixed to the lower surface side of the bed 1 in a state in which the length in the vertical direction can be adjusted, in other words, in a state in which the height of the legs can be changed.

  The pedestal 11 of the first level adjustment base material 10 is a member that serves as a base for horizontally supporting the entire first level adjustment base material 10. The leveling bolt 12 is a member that can arbitrarily adjust the length in the vertical direction. The lock nut 13 is a member that attaches and fixes the entire first level adjustment base material to the bed 1 in a state where the vertical length of the leveling bolt 12 can be adjusted. The coupling bolt 14 couples the base 11 and the leveling bolt 12 so that the base 11 does not separate from the leveling bolt 12.

  The pedestal 11 is grounded horizontally on the floor surface. A seat 11 </ b> A is formed on the upper surface side of the base 11. The leveling bolt 12 is erected on the seat 11 with the head down. For example, the lock nut 13 is attached and fixed to the lower frame of the bed 1. The leveling bolt 12 and the lock nut 13 are screwed together, and the leveling bolt 12 rotates with respect to the lock nut 13 to adjust the vertical length of the leveling bolt 12, so that the lock nut 13 moves up and down. The leg height is changed.

  The second level adjusting base material 20 includes a pedestal 21, a leveling bolt 22, a lock nut 23, a coupling bolt 24, a beam member 25, and an attachment member 26. The pedestal 21, the leveling bolt 22, and the lock nut 23 constitute a main body 20 </ b> A of the second level adjustment base material 20 for supporting the bed 1. Further, the beam member 25 and the attachment member 26 constitute an appendage 20B of the second level adjusting base member 20 for positioning and fixing the main body 20A at a predetermined position.

  The pedestal 21 of the second level adjusting base material 20 is grounded horizontally on the floor surface. The base 21 is a member that serves as a base of the main body 20A. The pedestal 21 is placed with the leveling bolts 22 standing up and down. A bowl-shaped receiving seat 21 </ b> A is formed on the upper surface side of the base 21. The seat 21A is formed in a conical transfer shape, and the cross-sectional shape of the seat surface is a straight line. The seat 21A receives the head of the hemispherical leveling bolt 22 at the seat 21A so as not to restrain the leveling bolt 22. Therefore, the base 21 mounts the leveling bolt 22 so as to be rotatable around its axis.

  The leveling bolt 22 is a member that can arbitrarily adjust the length in the vertical direction. The leveling bolt 22 has a hemispherical head. The leveling bolt 22 is mounted on the pedestal 21 so as to be rotatable about an axis. Specifically, the leveling bolt 22 is placed on the seat 21 </ b> A so that the axis is aligned with the center of the seat 21 </ b> A of the base 21 with the head down. The leveling bolt 22 is screwed into the lock nut 23 and rotates with respect to the lock nut 23 to change the relative position of the lock nut 23 in the longitudinal direction of the leveling bolt 22.

  The lock nut 23 is a member that contacts the lower surface of the bed 1 and directly receives the bed 1. The lock nut 23 is a member that attaches and fixes the main body 20 </ b> A to the bed 1 in a state where the lock nut 23 can be screwed into the leveling bolt 22 to change the relative position with respect to the longitudinal direction of the leveling bolt 22. The lock nut 23 has a flat upper surface 23 </ b> A, and the upper surface 23 </ b> A is abutted against the lower surface of the bed 1.

  The lock nut 23 is integrally connected to the beam member 25 on the side surface 23B side located in the front side of the machine body. The lock nut 23 is fixed to the bed 1 with a beam member 25 interposed therebetween. When the leveling bolt 22 is rotated, the lock nut 23 is relatively displaced in the longitudinal direction of the leveling bolt 22, and as a result, the vertical length of the leveling bolt 22 changes and the lock nut 23 moves up and down. As a result, the height of the bed 1 changes.

  The coupling bolt 24 is a member that prevents the pedestal 21 from being separated from the leveling bolt 22 and prevents the leveling bolt 22 from falling down. The coupling bolt 24 passes through the center of the pedestal 21 from a counter boring hole 21 </ b> B provided on the lower surface side of the pedestal 21 and is screwed into the center of the head of the leveling bolt 22.

  The beam member 25 is a member that substantially supports the main body 20A. The beam member 25 is provided horizontally from the lock nut 23 to the front end of the bed 1. The beam member 25 is formed so that one end 25 </ b> A thereof is integrally connected to the lock nut 23 on the side surface 23 </ b> B side of the lock nut 23 positioned in the front side of the machine body. As shown in FIG. 1, the beam member 25 has a length L substantially from one side 23 </ b> B side of the lock nut 23 to the front end of the bed 1.

  The attachment member 26 is a member that is provided on the other end 25 </ b> B of the beam member 25 and attaches and fixes the beam member 25 to the bed 1. The attachment member 26 is fixed to the front surface of the bed 1 by fastening a screw in a screw hole previously drilled in the front surface of the bed 1. Since one end 25A of the beam member 25 is connected to the lock nut 23 on the one side surface 23A side of the lock nut 23, when the attachment member 26 is attached to the bed 1, the main body 20A has a load center line of each moving structure. It is fixed in a state where it is positioned at a predetermined position below the bed 1 corresponding to the fourth support point J at the intersection.

  The machine tool according to the first embodiment described above has a structure in which the load of the column 3 is received at four points of the support point ABCJ, so that the displacement of the column 3 is reduced. However, there is a possibility that the inclination of the column 3 is slightly larger than when the support points are provided at positions where the centers of gravity of all the main structures are concentrated (points in FIG. 4D). However, since the displacement of the column 3 can be a simple displacement that occurs only in the Y-axis direction, the position error can be corrected by control like the pitch error correction, and the required machining accuracy is achieved. be able to.

  On the other hand, in the machine tool of the first embodiment, there are mainly three points of the first support point A, the second support point B, and the fourth support point J that are evenly distributed on the plane. However, since all the support points ABJ are on the first load center line XG of the table 2, no rolling occurs in the table 2, and the displacement of the table 2 is simple. Can be kept small.

  In particular, in the machine tool according to the first embodiment, an operator's hand corresponding to the fourth support point J provided at the intersection of the first load center line XG and the second load center line YG is used. The second level adjusting base material 20 having no power source can be positioned and fixed at a predetermined position under the bed 1 which does not reach without the operator being aware of it. Therefore, the operation of the leveling device 9 is relatively simple, and in particular, the power operation and the manual operation are not mixed, so that the leveling work is easier. Moreover, since it does not have the level adjustment base material which has a power source, there exists an advantage that the structure of the leveling apparatus 9 is comparatively simple.

  Next, the leveling method of the present invention will be described. In the leveling method of the present invention, basically, a first support point and a second support point are provided on both sides of the airframe on the first load center line along the moving direction of the first moving structure. A third support point is provided at the rear end of the fuselage on the second load center line along the moving direction of the second moving structure, and at the intersection of the first load center line and the second load center line. A fourth support point is provided, and a level adjustment base material is provided at each support point to adjust the horizontal level.

  The operator has a first support point A and a second support point B provided on both side ends of the machine body on the first load center line XG along the X-axis direction of the table 2, and the column 3 The first level adjustment base material 10 attached and fixed to the bed 1 at a third support point C provided at the rear end of the machine body on the second load center line YG along the Y-axis direction. The height of the leveling bolt 12 in the vertical direction is changed and adjusted in order to a predetermined length in order, and the height of the bed 1 at each support point ABC is set to a reference height.

  At this point, the aircraft's tilt falls within the required range. While referring to a level meter (level) placed on the table 2, the operator levels the first level adjustment base material 10 positioned at a support point in a direction in which the inclination of the airframe is corrected horizontally. The bolt 12 is turned to finely adjust the length in the vertical direction so that the aircraft is corrected horizontally, and the aircraft is leveled. By adjusting the height of the bed 1 at the support point ABC, which is the three basic points, in principle, the aircraft can be leveled.

  When the machine body is leveled, the operator prepares the second level adjusting base material 20 and adjusts the vertical length of the leveling bolt 22 of the second level adjusting base material 20 to obtain the second level in advance. The height of the adjustment base material 20 is lowered to a position where the lock nut 23 of the second level adjustment base material 20 does not collide with the lower side of the bed 1. And, for example, with the attachment material 26, the fourth support point provided at the intersection of the first load center line XG and the second load center line YG with the main body 20 </ b> A of the second level adjustment base material 20. It arrange | positions in the predetermined position under the bed 1 corresponding to J point.

  Next, the operator passes the screw through the screw hole of the mounting material 26, inserts the screw into the screw hole drilled in the front surface of the bed 1, and fastens the mounting material 26 on the front surface of the bed 1. Fix in position. By fixing the attachment material 26 to the bed 1, the main body 20 </ b> A of the second level adjustment base material 20 is fixed to the bed 1 through the beam material 25. At this time, the main body 20A is positioned and fixed at a predetermined position below the bed 1 corresponding to the fourth support point J without being aware of the operator.

  The operator operates the long spanner while referring to the level meter, and rotates the leveling bolt 22 of the second level adjustment base material 20 in the direction in which the vertical length becomes longer. At this time, the second level adjusting base material 20 is carefully operated so that the levelness of the airframe is not lost, and the lock nut 23 of the second level adjusting base material 20 is abutted against the lower surface of the bed 1 and applied. Make contact. As a result, the height of the second level adjustment base material 20 at the fourth support point J is set to a suitable height for supporting the bed 1 under the load while the machine body is placed horizontally.

  If the bed 1 is raised and the aircraft is tilted backward when the second level adjusting base material 20 is abutted against the lower surface of the bed 1, the support provided at the rear end of the aircraft is provided. By operating the first level adjusting base material 10 at the point C, the machine body can be returned to the horizontal level relatively easily.

  As described above, the leveling method of the present invention is based on the four points of the fourth support point J corresponding to the intersection of the basic support point ABC, the first load center line XG, and the second load center line YG. Since the load of the moving structure is received, the load of the table 2 which is the first moving structure is received at the three points of the support point ABJ on the load center line XG and is the second moving structure. Since the column 3 is received at the four points of the support point CJ point on the load center line YG and the support point AB point on the load center line XG that is evenly distributed, the first moving structure and the second point It is excellent in that the displacement of the moving structure can be kept small and the displacement can be simplified.

  In particular, in the leveling method of the present invention, the first level adjustment base 10 is adjusted at the basic support point ABC reachable by the operator and the aircraft is leveled, and then the first load center line XG The second level adjusting base material is positioned and arranged at a predetermined position below the bed 1 corresponding to the fourth support point J provided at the intersection of the second load center line YG and the machine body. The displacement of each moving structure can be reduced and simplified simply by adjusting until the second level adjusting base member 20 comes into contact with the lower surface of the bed 1 so as not to lose the levelness. Therefore, the leveling work is relatively easy.

  FIG. 3 shows a side surface of the second level adjusting base material of the leveling device in the machine tool according to the second embodiment. FIG. 3 shows the top surface of the lock nut of the second level adjustment base material. In FIG. 3, members having substantially the same function as the leveling device shown in FIG. 2 are described using the same reference numerals. Since the first level adjustment base material is the same as the leveling device in the machine tool of the first embodiment, detailed description thereof is omitted.

  The machine tool according to the second embodiment includes a first level adjustment base material 10 that is attached and fixed to the bed 1 and a second level adjustment base material that is not attached to the bed 1 before the leveling operation. A leveling device 9 including 20 is provided. A guide 1D is formed on the lower surface 1C of the bed 1. The guide 1D has a second level adjustment base at a predetermined position below the bed 1 corresponding to a fourth support point J provided at the intersection of the first load center line XG and the second load center line YG. This is for guiding and positioning the material 20.

  The second level adjusting substrate 20 includes at least a pedestal 21, a leveling bolt 22, a lock nut 23, and a coupling bolt 24. The pedestal 21, the leveling bolt 22, and the lock nut 23 constitute a main body 20 </ b> A of the second level adjustment base material 20 for supporting the bed 1.

  The pedestal 21, the leveling bolt 22, and the coupling bolt 24 of the second level adjustment base material 20 have substantially the same function as the second level adjustment base material 20 in the first embodiment. It is a member.

  Here, as for the lock nut 23 screwed together with the leveling bolt 22 of the leveling device 9 of the second embodiment, both sides of the upper surface 23A are chamfered along the Y-axis direction to form a chamfered portion 23C. The projecting portion 23D formed by chamfering the upper surface 23B of the lock nut 23 has a width d that fits with the guide 1D provided on the lower surface 1C of the bed 1. In the machine tool of the embodiment, the guide 1D is provided in parallel to the second load center line YG of the column 3 from the intersection of each load center line to the front end of the machine body along the Y-axis direction.

  The machine tool according to the second embodiment described above has a structure in which the load of the column 3 is received at the four points of the support point ABCJ, so that the displacement of the column 3 is reduced. In addition, it is a structure that receives the load of the table 1 mainly at three points of the first support point A, the second support point B point, and the fourth support point J point that are evenly distributed on the plane. Since each of the support points ABJ is all on the first load center line XG of the table 2, no rolling occurs in the table 2, and the displacement of the table 2 is simply kept small.

  In particular, in the machine tool of the second embodiment, the second level adjusting base material 20 can be positioned and fixed where it cannot be reached by the operator. In the machine tool of the second embodiment, the guide 1D needs to be formed on the lower surface 1C of the bed 1, but the second level adjusting base material 20 is positioned at a predetermined position below the bed 1. There is no need for attachments. Therefore, it is advantageous in that the configuration of the second level adjustment base material 20 is simple and the operation of installing the second level adjustment base material 20 becomes easy.

  Next, a process of leveling work by the leveling device in the machine tool according to the second embodiment will be described. First, the operator attaches and fixes the first level adjustment base material 10 attached to the bed 1 at each basic support point ABC point on the first load center line XG and the second load center line YG. The length of the leveling bolt 12 in the vertical direction is changed and adjusted in order to a predetermined length in order, and the height of the bed 1 at each support point ABC is set to a reference height.

  At this point, the aircraft's tilt falls within the required range. While referring to the level meter placed on the table 2, the operator turns the leveling bolt 12 of the first level adjustment base material 10 located at the support point in the direction in which the inclination of the airframe is corrected horizontally. Finely adjust the length in the vertical direction to the length at which the aircraft is corrected horizontally, and level the aircraft.

  When the machine body is leveled, the operator prepares the second level adjusting base material 20 and adjusts the vertical length of the leveling bolt 22 of the second level adjusting base material 20 to obtain the second level in advance. The height of the adjustment base material 20 is lowered to a position where the lock nut 23 of the second level adjustment base material 20 does not collide with the lower side of the bed 1.

  Then, the operator forms a protruding portion 23D of the lock nut 23 of the second level adjustment base material 20 on the lower surface 1C of the bed 1 so that the second level adjustment base material 20 does not collide with the lower side of the bed 1. Fit into the guide 1D.

  Next, the long spanner is applied to the pedestal 21 to push the pedestal 21 in the direction of the fourth support point J. Then, the main body 20A of the second level adjusting member 20 is pushed forward until the protruding portion 23D of the lock nut 23 hits the stopper and stops. Since the position where the second level adjusting member 20 stops is a predetermined position below the bed 1 corresponding to the fourth support point J, the second level adjusting member 20 is not conscious of the operator. Is positioned at a predetermined position.

  The operator operates the long spanner to rotate the leveling bolt 22 of the second level adjustment base material 20 in the direction in which the vertical length becomes longer. Since the protruding portion 23D of the lock nut 23 is fitted and substantially fixed to the guide 1D, the lock nut 23 is raised. Then, the second level adjusting base material 20 is carefully operated so that the levelness of the airframe is not lost, and the lock nut 23 of the second level adjusting base material 20 is abutted against the lower surface of the bed 1 and comes into contact therewith. Let As a result, the height of the second level adjustment base material 20 at the fourth support point J is set to a suitable height for supporting the bed 1 under the load while the machine body is placed horizontally.

  At the same time, the second level adjusting base material 20 is fixed between the floor surface and the lower surface of the bed 1 in a state where the machine body is placed horizontally. If the bed 1 is raised when the second level adjustment base material 20 is abutted against the lower surface of the bed 1 and the aircraft is tilted backward, the support point C provided at the rear end of the aircraft is provided. By operating the first level adjusting base material 10 in, the machine body can be returned to the horizontal level relatively easily.

  Some of the machine tools of the present invention described above have already been specifically shown. However, the machine tool need not have the same configuration as that of the embodiment, and can be modified without departing from the technical idea of the present invention. Can be implemented.

  INDUSTRIAL APPLICABILITY The present invention can be effectively used for a machine tool that is independently mounted so that a plurality of moving structures do not intersect with a T-shaped base structure. The present invention makes it possible to keep the displacement small without giving a complicated displacement to the moving structure, and facilitates leveling work in a relatively large machine. The present invention contributes to the technical development of machine tools.

1 Bed 1A, 1B Guide rail 1C Lower surface 1D Guide 2 Table 3 Column 4 Column upper part (ram)
5 Slider 6 Head 7 Lower arm 8 Upper arm 9 Leveling device 10 First level adjusting base material 20 Second level adjusting base material 21 Base 22 Leveling bolt 23 Lock nut 24 Coupling bolt 25 Beam material 26 Mounting material

Claims (4)

  A first moving structure that moves in the first horizontal uniaxial direction is mounted on the front side of the body of the T-shaped foundation structure, and the first horizontal uniaxial direction is located on the rear side of the foundation structure. In the machine tool on which the second moving structure that moves in the direction of the second horizontal axis perpendicular to the first moving structure is mounted so as not to intersect the first moving structure, the first moving structure has the first moving structure. A first support point and a second support point provided on both ends of the airframe on the first load center line along the horizontal one axis direction and the second horizontal one axis direction of the second moving structure Are arranged at predetermined positions below the foundation structure respectively corresponding to third support points provided on the rear end of the airframe on the second load center line along the height of the foundation structure at each position. A first level adjusting substrate capable of adjusting the height, the first load center line, and the second A second level adjustment base disposed at a predetermined position below the foundation structure corresponding to a fourth support point provided at an intersection with the heavy center line and capable of adjusting the height of the foundation structure at the position; And the second level adjusting base material is mounted on a pedestal that is horizontally grounded on the floor surface, and is mounted on the pedestal so as to be rotatable about an axis, and the length in the vertical direction can be arbitrarily adjusted. Leveling bolt, a lock nut screwed to the leveling bolt, a beam member having one end integrally connected to the lock nut and having a length from the lock nut to the front end of the foundation structure, and the beam member A machine tool provided with a leveling device, comprising: a mounting member provided at the other end of the base plate, the mounting member mounting and fixing the beam member to the foundation structure.   A first moving structure that moves in the first horizontal uniaxial direction is mounted on the front side of the body of the T-shaped foundation structure, and the first horizontal uniaxial direction is located on the rear side of the foundation structure. In a machine tool on which a second moving structure that moves in the direction of a second horizontal axis perpendicular to each other is mounted so as not to intersect with the first moving structure, the first horizontal of the first moving structure A first support point and a second support point provided on both ends of the airframe on the first load center line along the one axis direction and the second horizontal one axis direction of the second moving structure. The height of the substructure is arranged at a predetermined position below the substructure corresponding to each of the third support points provided at the rear end of the airframe on the second load center line. A first level adjustment base material capable of adjusting the first load center line and the second load A second level adjusting base material that is disposed at a predetermined position below the foundation structure corresponding to a fourth support point provided at the intersection with the core line and can adjust the height of the foundation structure at the position. The second level adjusting base material is mounted on a pedestal that is horizontally grounded on the floor, and can be freely adjusted in the vertical length by being mounted on the pedestal so as to be rotatable about its axis. A leveling device including a leveling bolt and a lock nut screwed into the leveling bolt and chamfered on both sides of the upper surface along the second horizontal one-axis direction, on the lower surface of the foundation structure A machine tool, wherein a guide for guiding and positioning the second level adjusting base material at the predetermined position is formed.   A first moving structure that moves in the first horizontal uniaxial direction is mounted on the front side of the body of the T-shaped foundation structure, and the first horizontal uniaxial direction is located on the rear side of the foundation structure. In a leveling method for a machine tool in which a second moving structure that moves in the direction of a second horizontal axis perpendicular to each other is mounted so as not to intersect the first moving structure, the first of the first moving structure 1st support point and 2nd support point are provided in the both-ends of the body on the 1st load center line along the 1 horizontal 1 axis direction, and the 2nd horizontal 1 axis of the 2nd above-mentioned moving structure A third support point is provided at the rear end of the aircraft on the second load center line along the direction, and a fourth support point is provided at the intersection of the first load center line and the second load center line. And adjust the horizontal level of the fuselage by arranging a level adjustment base material at each of the support points. Machine tool leveling method comprising and.   Adjusting the length in the vertical direction of the first level adjustment base material attached and fixed to the substructure at the first support point, the second support point, and the third support point, and Leveling the airframe, and lowering the second level adjusting base material to a position where it does not collide with the substructure and disposing it at a predetermined position below the substructure corresponding to the fourth support point And operating the second level adjustment base material so that the level of the airframe is not lost and bringing the second level adjustment base material into contact with the lower surface of the substructure. The leveling method for a machine tool according to claim 3.

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