JPH06246581A - Cover structure for machine tool - Google Patents

Abstract

PURPOSE:To facilitate coolant leakage preventing structure and improve the external appearance of a cover in such closed type cover structure that a cover for covering the periphery and upper face of a machine tool with a coolant recovery coolant pan provided at a bed is supported by posts fixed to the bed. CONSTITUTION:Lower posts 17a serving also as ducts for electric wiring, hydraulic piping, and the like are fixed upright to plural places on both lateral side faces of a bed 10, piercing a coolant pan 18. Upper posts 17b serving also as ducts for electric wiring, hydraulic piping, and the like are connected to the upper ends of the lower posts 17a. Coolant leakage preventing covers 20 are fitted to the connecting parts between the lower posts 17a and the upper posts 17b in such a way as to close the opening holes of the coolant pan 18 pierced with the lower posts 17a, and the upper face of a cover 15 is supported by the upper posts 17b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover device for a machine tool for preventing coolant and cutting chips from scattering during machining of a workpiece and ensuring safety for an operator.

[0002]

2. Description of the Related Art In a machine tool, a door for opening and closing an opening is provided on the front surface in order to prevent coolant and chips from scattering during machining of a workpiece and to ensure safety for workers.
A cover is provided to cover the entire periphery of the machine tool by the top plate and the side wall.

By the way, as shown in FIG. 5, the entire cover (closed type) in a machine tool having a structure in which the bed 1 and the coolant pan 2 for collecting the coolant are separated has a sufficient rigidity because the coolant pan 2 has a sheet metal structure. Since it cannot be obtained, the columns 3 are fixed to the left and right sides of the bed 1, and the columns 3
The beam 4 is fixed to the upper end of the beam, and the top plate of the cover 5 is attached to the beam 4.

Further, in such a hermetically-sealed cover 5, it is necessary to take out the electric wiring and hydraulic piping inside the cover to the outside of the cover, and the pillars 3 and the beams 4 are also used as wiring and piping ducts. As shown in FIG. 6, the beam 4 fixed on the support column 3 has a notch 6 formed in the side wall of the cover 5.
To the inside of the cover 5.

[0005]

A notch 6 through which the beam 4 passes
Between the beam and the beam 4, a gap is easily generated due to a manufacturing error, and since the wall surface of the upright surface is used, coolant leaks to the outside from this gap. In order to prevent this coolant leakage, it is possible to close the gap with a sealing material, but the structure becomes complicated.

Further, since the cover 5 is fixed inside the support column 3 and the beam 4, the support column 3 is projected to the outside of the cover 5, and unevenness due to the support column 3 is realized on the outside of the cover 5. The appearance is spoiled.

An object of the present invention is to place the support in a cover,
Another object of the present invention is to provide a cover structure for a machine tool that realizes a coolant leakage prevention structure with a simple structure.

[0008]

SUMMARY OF THE INVENTION To achieve the above object, the gist of the present invention is to cover the periphery and the upper surface of a machine tool provided with a coolant pan for collecting coolant on a bed, and to provide an opening on the front surface. In a cover of a machine tool including a door that opens and closes the opening, a lower strut that is fixed to a plurality of places on the left and right side surfaces of the bed and upright through the coolant pan, and a lower strut of the lower strut. An upper strut that is coupled to the upper end and supports the upper surface of the cover, and a coolant leakage prevention cover that is attached to the joint between the lower strut and the upper strut so as to close the opening hole of the coolant pan through which the lower strut penetrates. The lower pillar and the upper pillar constitute a duct such as electric wiring and hydraulic piping.

[0009]

With the above structure, since the lower strut that is connected to the upper strut is provided through the coolant pan, all the strut are located inside the cover, and the outer appearance of the cover has a neat appearance. In order to block the opening hole of the coolant pan through which the lower strut penetrates with the coolant leakage prevention cover attached using the joint between the strut and the upper strut,
A coolant leakage prevention structure is easily formed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 10 denotes a bed of a machine tool, on which a slide table 11 having a headstock 12 and a tailstock 13 and a grindstone base 14 are mounted. Reference numeral 18 denotes a coolant pan arranged on the bed 10 for collecting the coolant.

Reference numeral 15 is a cover that covers the periphery and the upper surface of the machine tool. The cover 15 is composed of a side wall 15a that covers the periphery of the machine tool and a top plate 15b that covers the upper surface of the machine tool. The front face of the side wall has an opening 15c for taking in and out a work, maintenance and inspection of the machine, and the like. And a door 15d that opens and closes the opening 15c.

Numeral 17 is a column for supporting the cover 15, which is fixed to two front and rear positions (conveniently four positions) on the left and right side surfaces of the bed 10.

The column 17 is divided into a lower column 17a fixed to the bed 10 and an upper column 17b connected to the upper end of the lower column 17a.

The lower support column 17a fixed to the bed 10 is provided with the coolant pan 18 as shown in FIG.
Stands upright through. In order to penetrate the coolant pan 18, the coolant pan 18 is cut open to provide an opening hole 21, and the cut open piece is raised to form an enclosure member 22 around the opening hole 21.

The upper end of the lower support 17a and the upper support 17
A flange 23 is provided at the lower end of b, and a coolant leakage prevention cover 20 that covers the outer periphery of the enclosure member 22 of the opening hole 21 of the coolant pan 18 is sandwiched between the flanges 23 with a bolt 25. The lower support 17a and the upper support 17b are joined together by tightening.

A frame 19 is hung and fixed as a reinforcing material between the upper ends of the columns 17, that is, between the upper ends of the left and right upper columns 17b, and the inner surface of the top plate 15b of the cover 15 is mounted on the frame 19. And fix it. Therefore,
A pillar 17 including a lower pillar 17a and an upper pillar 17b
Is located inside the cover 15.

The column 17 also serves as an electric wiring 26 connected to each part of the machine tool and a duct of the hydraulic pipe 27, and is drawn out to a connection port 28 of the hydraulic pipe arranged outside the cover 15 and a terminal box 29.

Since the present invention has the above-described structure, the lower support 17a is fixed to the bed 10, the coolant leakage prevention cover 20 is attached, the upper support 17b is connected to the lower support 17a, and the frame 19 is connected to the upper support. A frame is formed by columns 17 by being hung over and fixed on 17b. By mounting and fixing a closed cover 15 on the columns 17, the machine tool including the columns 17 is covered by the cover 1.
5. It is completely covered to prevent coolant and chips from scattering and to ensure safety for workers.

Further, the opening hole 21 of the coolant pan 18 through which the lower support 17a penetrates is closed by a coolant leakage prevention cover 20 attached to the joint between the lower support 17a and the upper support 17b. Therefore, the leakage of the coolant from the opening hole 21 of the coolant pan 18 is prevented with a simple structure. In addition, in the above-mentioned embodiment, the columns 17 are provided at two front and rear positions on the left and right side surfaces of the bed 10,
The present invention is not limited to this configuration, and it goes without saying that the number and positions of the columns can be adjusted according to the shape of the bed and the like.

[0020]

As described above, the present invention is divided into a lower strut for fixing a strut for supporting a cover to a bed, and an upper strut for supporting the cover, which is coupled to an upper end of the lower strut. Since the structure is such that it penetrates the coolant pan and is connected to the upper strut, all the strut are located inside the cover, so the strut is not exposed to the outside of the cover as in the past, and the appearance of the cover is neat. It becomes a form and improves the appearance. Furthermore, by subdividing the column into a lower column and an upper column, the column can be transported in a compact state and the assembling work becomes easy.

Further, an opening hole is provided in the coolant pan in order to penetrate the lower support column into the coolant pan. However, since it is closed by a coolant leakage prevention cover attached by utilizing a joint portion with the upper support column, it is conventional. As described above, the coolant leakage prevention structure can be formed more easily than the structure in which the notch is provided on the upper surface of the cover affected by the manufacturing error and the beam is penetrated. Can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a view on arrow B of FIG.

FIG. 4 is an enlarged cross-sectional view of an arrow C portion of FIG.

FIG. 5 is a sectional view of a conventional cover structure.

6 is a perspective view of an essential part of FIG.

[Explanation of symbols]

 10 Bed 15 Cover 17 Support 17a Lower Support 17b Upper Support 18 Coolant Pan 20 Coolant Leakage Prevention Cover 21 Opening Hole

Claims (1)

[Claims] 1. A cover of a machine tool, which covers a periphery and an upper surface of a machine tool provided with a coolant pan for collecting a coolant on a bed, and has a front opening and a door for opening and closing the opening, Fixed to a plurality of places on the left and right side surfaces of the bed, a lower column that penetrates the coolant pan and stands upright, an upper column that is coupled to the upper end of the lower column and supports the upper surface of the cover, and the lower column. A coolant leakage prevention cover attached to the coupling portion with the upper strut so as to close the opening hole of the coolant pan through which the lower strut penetrates, and the lower strut and the upper strut constitute ducts such as electric wiring and hydraulic piping. A cover structure for machine tools characterized by: