JP2001205541A - Machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the maintenance work inside a main cover body 20 and taking-in/out operation of a heavy work. SOLUTION: This machine tool of a machining center etc. is provided with at least a table for mounting a work and a main spindle having a tool for machining the work in a base 2 and the outer circumference on the base 2 is covered with a main cover body 20. The front side of the main cover body is surrounded with a first cover body 21, a second cover body 22, and a coping cover body 23 for connecting their top ends to each other. It is also provided with an opening for taking in/out the work etc., relative to the table and an opening/closing door 26 in the opening. A bottom cover body 27 is arranged in such a state as linked with the bottom end of the opening/closing door 26, the base 2, and the left/right both side edges of the main cover body 20 and the bottom cover body 27 is at least detachably attached to the main cover body 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a machine tool such as a machining center, and more particularly, to the structure of a cover for covering the outer periphery of the machine tool.

[0002]

2. Description of the Related Art Conventionally, in this type of machine tool, as shown in FIG. 6, a cover is provided around a base 100 of the machine tool so as to prevent cutting chips and cutting oil from scattering outside the machine. A body 101 is provided. The cover body 101 is
Usually, it is made of a steel plate.
a and a left portion 101b.
The connecting portions a and 101b are bent inward to abut each other, and the abutting portions are connected by a bolt nut or the like.

On the other hand, in order to mount a work (work) on a table 102 or the like disposed on the base 100 and to remove the work, and to enable maintenance work or the like, the cover body 101 has a sliding door. Usually, 103 was provided.

When the work to be attached to and detached from the table 102 is heavy and an operator must enter the base 100, or when the table 102 is to be replaced during maintenance or the like, the cover body is removed. In 101, the cover portion (frame portion) below the lower end of the door often became an obstacle.

[0005]

However, in the cover 101 having the conventional structure, the large cover 1
Unless 01a or 101b is removed, the front of the table 102 cannot be opened, and the work must be performed over the frame portion, resulting in a problem that the work is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a machine tool which solves the above-mentioned conventional problems and in which only a part of a cover body can be removed so that maintenance work can be facilitated.

[0007]

According to a first aspect of the present invention, there is provided a machine tool according to the first aspect of the present invention, wherein at least a table on which a work is placed and a table for processing the work are provided. In a machine tool such as a machining center having a main shaft having a tool and configured to cover the outer periphery of the base with a main cover body, a lower cover body that covers a portion above an upper end edge of the base, It is configured to be detachable from the main cover body.

According to a second aspect of the present invention, there is provided the machine tool according to the first aspect, wherein the main cover body is used to take a work or the like in and out of the table from the front side of the machine tool. An opening having an opening and closing door, wherein the lower cover is disposed so as to be connected to the lower end of the opening and closing door, the base, and both right and left edges of the main cover. It is.

[0009] The invention described in claim 3 is the first invention.
Or in the machine tool according to claim 2, at least,
A connecting material between the lower cover body, the base and the main cover body is provided with a packing material for preventing leakage of cutting oil.

[0010]

Next, embodiments of the present invention will be described. 1 is a front view of a machine tool according to the present invention, FIG. 2 is a side sectional view, FIG. 3 is a perspective view, and FIG. 4 is a sectional view of a main part.

As shown in FIGS. 1 and 2, a base 2 made of cast steel or the like in a machine tool 1 of the present invention is formed in a dish shape with its outer peripheral edge 3 protruding upward and a substantially central portion lowered. ,
The lower end of the base 2 is provided with four feet 4. Then, in order to obtain a horizontal position when the machine tool 1 is installed, each of the legs 4
The lower end is provided with an adjuster bolt 5.

A support portion 8 for rotatably supporting a table 7 for mounting and fixing a work (workpiece) 6 and detachably attachable to the front portion of the base 2 near the upper surface. An X stage 9 extending in the X-axis direction (the left-right direction of the machine tool 1; see FIG. 3) is provided at a position near the upper surface of the base 2, and a Y-stage 10 is slidable along the X-axis direction. The Y stage 10 is reciprocally movable by an X-axis motor, a feed screw, and the like (not shown). The Y stage 10 is long in the front-rear direction of the machine tool 1 and is located behind the trailing edge of the table 7. A vertically long column 11 slides along the Y axis direction with respect to the Y stage 10. The column 11 is freely mounted and can reciprocate with respect to the Y stage 10 by means of a Y-axis motor and a feed screw (not shown).

A headstock 12 is disposed on the front surface of the column 11 along a guide rail (not shown) so as to be slidable in the Z-axis direction (along the vertical direction of the machine tool). The headstock 12 is configured to be able to move up and down, and a spindle portion 13 is provided on the front surface of the headstock 12, and a vertically extending spindle (not shown) is rotated by a spindle motor 14. At the lower end thereof. A tool (not shown) such as a drill is removably mounted between a tool changer (not shown) and a tool changing device (not shown), and performs processing such as cutting on the work 6 fixed on the table 7. Note that cutting oil or coolant (coolant) adheres to prevent cutting chips from getting on the upper surfaces of the X stage 9 and the Y stage 10. Protective cover 1 for so no
5 and 16 are arranged so as to be telescopic or flexible.

A main cover 2 surrounding the outer periphery of the machine tool 1
1, a first cover body 21 formed so as to cover the front right side and the right side above the base 2, and the front left side above the base 2, as shown in FIGS. A second cover body 22 that covers the left side surface, a substantially rectangular ceiling cover body 23 in plan view that is connected to the upper ends of the first cover body 21 and the second cover body 22 and that covers the upper end of the column 11. A front cover portion 24 covering the front side of the first cover body 21 and the second cover body 22 and covering the upper portion, and a rear cover body 25 covering the rear upper portion of the base 2; These cover members are connected to their connecting parts by bolts via a packing (not shown) for preventing liquid leakage, and the first cover member 21 and the second cover member 22 are connected to each other by bolts.
Each lower edge of the rear cover body 25 is connected to the outer peripheral edge 3 of the base 2 by a bolt via a packing (not shown) in the same manner as described above. With this configuration, on the front surface of the machine tool 1, a substantially rectangular shape surrounded by the first cover body 21, the second cover body 22, the 24 helm cover covers connecting the upper parts thereof, and the front upper edge of the base 2. The space is an opening.

The opening is provided with a two-piece interlocking sliding door 26. Further, the space between the upper end on the positive side of the base 2 and the lower part on the front side of the first cover body 21 and the second cover body 22 (the lower end side of the opening / closing door 26) is formed in a horizontally long substantially rectangular shape. Is configured to be closed by the lower cover body 27. At this time, the lower cover body 27 is configured to be detachable from the main cover body 20. In the first embodiment, as shown in FIGS. 4 and 5, the four peripheral edges of the lower cover body 27 are bent inward, and the left and right bent edges 27a, 27a are connected to the first cover body 21. And a packing material 28 such as rubber for preventing liquid leakage is interposed between the bent edges 21a and the bent edges 22a of the second cover body 22. In this state, the bolts and nuts 29 are removably connected at appropriate intervals. In addition, the lower inner bent edge portion 27b of the lower cover body 27 has a flexible (elastic) pipe-shaped packing material 30 interposed between the lower cover body 27 and the bottom surface on the front side of the base 2, The upper surface of the bent edge portion 27b in the lower side is fastened with a bolt 32 via a holding piece 31 having an L-shaped cross section.

The upper edge of the lower cover 27 is bent into an L-shape to form a guide edge 27c.
A lower guide rail 33 protrudes from the back surface of the lower cover body 27 via a support bolt 34 so that the lower guide rail 33 guides sliding members, rollers, etc. at the lower ends of the two doors 26. Constitute. The rollers at the upper ends of the two opening / closing doors 26 are movably mounted or suspended on an upper guide rail 35 extending horizontally from the lower side of the coping cover body 24 to the first cover body 21. When the opening is opened widely, the two doors 26 are retracted in a state where they are overlapped with each other in the front-rear direction, and are housed in a door pocket on the back surface on the front side of the first cover body 21. A control box 36 for NC control or the like is installed on the back side of the back cover body 25.

According to this configuration, at the time of a normal machining operation by the NC control, the column 11 is appropriately moved in the X direction and the V direction, and the tool is positioned above a predetermined machining position of the workpiece 6 on the table 7 on the back side of the table 7. If it is located, then, the headstock 12 is lowered in the Z direction to perform a drilling operation.

In addition, above the middle part of the table 7 in the front-rear direction, it hangs down from the ceiling cover body 23 and both right and left side edges are fixed to the back surfaces of the first cover body 21 and the second cover body 22, respectively. A partition wall 40 is provided, and the partition wall 4 is fixed to the table 7 and rotates together with the table 74.
If the intermediate part in the front-rear direction of the table 7 is partitioned at 1 (see FIG. 2), the cutting chips accumulate deeper than the partition wall 40 on the base 2, and the cutting chips and cutting oil are also removed. It can be prevented from scattering to the front side of the base 1.

During the work, the door 26 is opened,
The work 6 can be carried in from the front side of the machine tool 1 and fixed to the front side of the upper surface of the table 7 so that the next work can be set up efficiently.

When a worker enters or exits the work space surrounded by the main cover body 20 or enters or exits the work for maintenance work or to fix a large work to the table 7, the opening / closing door 26 is used. By removing the lower cover body 27 in advance in the fully opened state, the height up to the outer peripheral edge 3 on the front side of the base 2 becomes shorter. Parts can be easily replaced.

As shown in FIG. 3, an opening may be formed in the middle of the second cover body 22 that covers the left side of the machine tool 1, and this opening may be covered by the opening / closing door 42. In this case, a lower cover 43 may be disposed between the lower end of the opening / closing door 42 and the outer peripheral edge 3 of the base 2, and the lower cover 43 may be configured to be detachable. Also in this case, by removing the lower cover body 43, the maintenance work, the parts and work replacement work, and the work of removing the cutting chips can be simplified as in the above embodiment. Although not shown, a lower cover (not shown) may be removably attached to the side of the first cover 21 below the opening and closing door.

As another embodiment in which the lower cover bodies 27 and 43 are detachable from the main cover body 20, a lower side of each of the lower cover bodies is hinged to an outer peripheral edge of the base 2. The lower cover body may be connected to the main cover body 20 so that the left and right side edges of each lower cover body are disengaged from the main cover body 20. If the is directed downward, the height of the lower end of the opening can be reduced so that the worker, the work, and the parts can easily enter and exit.

In each of the above embodiments, the main cover 20
Include those without the ceiling cover body 23.

[0024]

As described above, the machine tool according to the first aspect of the present invention has at least a main shaft having a table on which a work is mounted on a base and a tool for processing the work. In a machine tool such as a machining center configured to cover an outer periphery on the base with a main cover, a lower cover that covers a portion above an upper end edge of the base is formed by the main cover. It is configured to be detachable with respect to.

With this configuration, when the lower cover body is removed from the main cover body, the lower wall height separating the outside and the inside of the machine tool has the same effect as that of the lower body. Since an operator, a work, and parts can be easily moved in and out, there is an effect that maintenance work and replacement work of parts and the like can be performed easily and safely.

According to a second aspect of the present invention, there is provided the machine tool according to the first aspect, wherein the main cover body is used to take a work or the like in and out of the table from the front side of the machine tool. An opening having an opening and closing door, wherein the lower cover is disposed so as to be connected to the lower end of the opening and closing door, the base, and both right and left edges of the main cover. It is.

According to this configuration, when the lower cover is removed, the opening area of the opening is increased, and the lower end of the opening is extended to the upper edge of the base. This has the effect of making it extremely easy to go in and out for replacement and the like.

Further, the invention described in claim 3 is the first invention.
Or in the machine tool according to claim 2, at least,
Since the connecting portion between the lower cover body, the base and the main cover body is provided with a packing material for preventing leakage of cutting oil, even if the lower cover body is removable, Oil does not leak out, and in addition to the effect of the first or second aspect of the invention, the effect of preventing the outside from being soiled can be achieved.

[Brief description of the drawings]

FIG. 1 is a front view of a machine tool.

FIG. 2 is a side sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of a machine tool.

FIG. 4 is an enlarged side sectional view taken along a line IV-IV of FIG. 1;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a front view of a conventional machine tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine tool 2 Base 3 Outer edge 6 Work 7 Table 13 Main shaft part 20 Main cover body 21 First cover body 22 Second cover body 24 Kasagi cover body 26 Opening door 27, 43 Lower cover body 28, 30 Packing material 29 Bolt Nut 32 bolt

Claims (3)

[Claims] 1. A base having at least a table on which a work is placed and a main shaft having a tool for processing the work, wherein a main cover body covers the outer periphery of the base. In a machine tool such as a machining center configured, a lower cover body that covers a portion above an upper edge of the base,
A machine tool, which is configured to be detachable from the main cover body. 2. The main cover body has an opening through which a work or the like is inserted into and taken out of the table from the front side of the machine tool. The machine tool according to claim 1, wherein the lower cover body is arranged so as to be connected to a lower end portion of the opening / closing door, the base, and left and right side edges of the main cover body. 3. A packing material for preventing leakage of cutting oil is interposed at least in a connecting portion between the lower cover body, the base and the main cover body. The described machine tool.