JP2000190162A - Cover of machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be operable from the side, have good operability and use ordinary weight lifting equipment by providing a movable holder inside or ouside a moving cover, and an opening and closing cover held on the holder to be turned and adapted to surround the front side of a working area when it is closed. SOLUTION: A right opening and closing cover 8b and a left opening and closing cover 8a are turnably held on the right side and the left side, respectively, by hinges 7c, 7d, 7a, 7b. Accordingly, the covers can be turned to the right and the left to be opened and closed by the respective handles 9b, 9a fitted to the front, so that the covers can be turned in the horizontal direction one by one to open the front of a moving cover 5, thereby improving operability of an electric discharge machining device. When the moving cover 5 is pushed in inside a fixing cover 3, the right and left sides and the upper surface of a working area of the electric discharge machining device are opened, so that the ordinary weight lifting equipment can be used to freely transport weighty goods.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for surrounding a whole machine tool, and more particularly to a work in which a work is hung and placed on a bed, and a column, a spindle and a work movable on the bed are relatively moved. To a machine tool cover.

[0002]

2. Description of the Related Art Generally, an electrical discharge machining apparatus of a machine tool does not have a cover surrounding the entire apparatus, and a cover is provided to partially surround the apparatus for security or aesthetic purposes. Is common. On the other hand, in some machining centers, the entire machine tool is surrounded by a cover in order to prevent chips and cutting fluid from scattering.

[0003]

However, when the entire machine tool is surrounded by a cover, simply surrounding the periphery of the machine tool with a fixed cover makes it impossible to operate the machine tool from the side or deteriorates its operability. Or lift the heavy lifting equipment necessary to handle the suspended heavy work by placing it over the work area, or use special lifting equipment adapted to the cover. Was.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and a cover for a machine tool capable of using ordinary lifting equipment without deteriorating the operability of the machine tool. It is intended to provide. In view of this object, the invention according to claim 1 is a machine tool that mounts a work on a bed on a front side and performs a working operation by relative movement of a spindle and a work that can be moved and positioned on the bed. In a cover surrounding a work area such as a column, the cover is fixed to a bed leg, which is a base part, by a support member, and surrounds a rear side face, a left side face, and an upper face of the work area with a rear face plate, a left side face plate, and an upper face plate. A fixed cover with an open front side, and cover guides attached to the left and right sides of the bed legs, the left and right side surfaces and the upper surface of the work area are surrounded by left and right side plates and an upper surface plate, and the fixed cover is opened by the cover guide. A movable cover movable from the front side to the inside or outside of the fixed cover, and door guides respectively attached to the inside or outside of the left and right side plates of the movable cover Thus, a holding tool movable inside or outside the moving cover, and an opening / closing cover that is pivotally held by the holding tool and surrounds the front side surface of the work area when closed, is provided. This is the cover of the machine tool. In particular, even among machine tools, in an electric discharge machining apparatus that generates electric discharge between a die-sinking electrode or a wire electrode and a workpiece while relatively moving the workpiece, and performs machining on the workpiece, an electromagnetic interference characteristic of electric discharge machining and Since it is necessary to surround the entire electric discharge machine with a cover as a means to cope with the generation of gas accompanying electric discharge and as a means to avoid the influence of the atmosphere in order to secure high-precision machining, the operability of the electric discharge machine is The lifting equipment that handles heavy workpieces could be handled as it was while maintaining the load.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view of an electric discharge machine according to the present invention. Although FIG. 1 shows a wire electric discharge machine as a schematic shape, even if this is a die-sinking electric discharge machine, there is no change in a member or the like to which a cover is attached, only a discharge processing part is different. Also, not only EDM,
Lathes or machining centers can be used.

Reference numeral 1 denotes an electric discharge machining apparatus in which the entire apparatus is surrounded by a cover. Reference numeral 2 denotes a bed leg of the electric discharge machine 1, which forms the outermost contour of a base portion below the electric discharge machine 1. The column 1a is movably arranged on the bed 2a, and the electric discharge processing member of the column 1a is suspended by a lifting device and performs electric discharge machining on a heavy work placed on a table (not shown). Reference numeral 3 denotes a fixed cover which is fixed at its lower end to a head leg 2 while being held by a support member (not shown) and surrounds a rear part of a work area such as a column 1a of the electric discharge machine 1. The fixed cover 3 is formed by bending the rear side plate, the left and right side plates, and the upper surface plate integrally or by connecting them integrally with a connecting member, and forms a rear side surface and a rear side of a working area above the bed leg 2 of the electric discharge machine 1. It surrounds the left and right sides and the upper side of the part. On the other hand, the front end portion of the fixed cover 3 is open, and the front side surface of the working area of the electric discharge machine 1 is not surrounded.

Reference numerals 4a and 4b denote cover guides provided inside the fixed cover 3 on the left and right sides of the bed leg 2, so that the movable cover 5 can be moved inside the fixed cover 3 along the cover guides 4a and 4b. It is for doing. Moving cover 5
Is formed such that the left and right side plates and the upper surface plate are integrally bent in a U-shaped cross section or are integrally connected by a connecting member so as to open downward, so that the left and right side surfaces of the working area of the electric discharge machine 1 are formed. And the upper surface. In addition, the moving cover 5
Is formed so that it can be pushed in with an appropriate gap with respect to the inner dimension of the open portion of the fixed cover 3, and can be moved from the front side using human power or some kind of power to the cover guides 4a and 4b. The lower edge of 5 is guided and can be stored inside the fixed cover 3. Moving cover 5
Is pushed into the inside of the fixed cover 3, the left and right side surfaces and the upper surface of the working area of the electric discharge machine 1 are opened,
Normal lifting equipment can be easily used, and heavy objects can be transported freely.

The front surface of the moving cover 5 is open, from which the operation of the apparatus can be performed, and the cover surrounding this part can be easily closed as required while no other operation is performed. Attached. Reference numerals 8a and 8b denote open / close covers which surround the open front surface of the movable cover 5 and are divided into two right and left members. The right opening / closing cover 8b is on the right side, and the left opening / closing cover 8a is on the left side.
It is held rotatably by d, 7a and 7b. Therefore, since each handle 9b, 9a attached to the front face can be turned left and right to open and close, the front face of the movable cover 5 can be opened by turning one by one in the horizontal direction, thereby improving the operability of the electric discharge machine. Can be better.

A hinge 7 for holding the open / close covers 8a, 8b
a, 7b, 7c, 7d are connected to holders 10a, 10b
, And the holders 10a, 10b are provided with door guides 6a, 6 provided inside the left and right side surfaces of the movable cover 5.
b, 6c, and 6d are held by moving members. Thus, when the open / close covers 8a and 8b are opened 90 degrees in the horizontal direction and are substantially parallel to the side surfaces of the movable cover 5, when the open / close covers 8a and 8b are pushed into the inside of the side surfaces of the movable cover 5 from the front side, the open / close covers 8a and 8b are closed. The moving member is a door guide 6a, 6b, 6c, 6
It is slid along d. When the opening and closing covers 8a and 8b are pushed in and the moving member reaches the rear end of the moving cover 5, the moving members are blocked by stoppers 11a, 11b, 11c and 11d projecting from the ends of the door guides 6a, 6b, 6c and 6d, respectively. Then, the pushing of the open / close covers 8a, 8b is stopped.
Nevertheless, if the opening / closing covers 8a, 8b are pushed in, the moving cover 5 starts to move via the stockers 11a, 11b, 11c, 11d and pushes backward, so that the moving cover 5 can be pushed into the fixed cover 3. As a result, the column 1a and the like are opened in front of the fixed cover 3 behind the bed 2a, so that adjustment, maintenance, and cleaning of the side and rear sides can be easily performed. When the movable cover 5 and the opening / closing covers 8a and 8b are pulled out, the above procedure is reversed. That is, when the opening / closing covers 8a and 8b are started to be pulled out from the moving cover 5, the holders 10a and 10b are moved to the stockers 11a, 11b and 11c. Door guide 6a on the opposite side to
The movable cover 5 can be pulled out from the fixed cover 3 to the front end of the bed leg 2 by engaging with a stopper protruding from the front end of 6b, 6c, 6d.
b is pulled out of the movable cover 5, and finally the open / close cover 8
It is needless to say that this is a procedure in which a and 8b are rotated to the center by 90 degrees and closed. Further, as the door guides 6a, 6b, 6c, 6d of the cover guides 4a, 4b, commercially available products such as a roller slide manufactured by Roland or a slide pack manufactured by THK can be used.

In the above embodiment, the opening / closing covers 8a, 8
b. The movable cover 5 is formed so as to be movable inside the movable cover 5 and the fixed cover 3 respectively, and since the respective guides are not visible from the outside, the appearance of the machine tool appearance is good. Inversely, guides can be attached to the outside of each, and can be made to be movable by pushing outward. Opening / closing covers 8a, 8b
Is turned left and right, and is pushed into the inside of the left and right side surfaces of the moving cover 5 to open the front surface of the moving cover 5, but the opening and closing cover 8 is attached to the upper face plate of the moving cover 5 so as to be pivotable in the vertical direction. 5 is provided so as to be able to be pushed along a door guide attached to the inside of the upper face plate of 5, and the handle 9 attached to the lower part of the front surface of the opening / closing cover 8 is lifted up and pushed backward to open the front surface of the movable cover 5. You can also. As described above, other components are not limited to those illustrated, and can be changed without departing from the gist of the present invention.

[0011]

As is clear from the above description, according to the present invention, it is possible to push the movable cover surrounding the left and right side surfaces and the ceiling surface of the working area of the machine tool backward. Also, the left and right side surfaces and the upper side of the work area can be opened as necessary, so that existing or ordinary lifting equipment can be easily used. Furthermore, the moving cover does not protrude to the left and right side surfaces during the pushing operation, so that the adjacent machine tool can be smoothly stored and pulled out without obstruction. In particular, in a discharge machining apparatus in which a machine tool generates an electric discharge between a die-sinking electrode or a wire electrode and a workpiece while relatively moving the workpiece, and performs machining on the workpiece.
In addition to the above-mentioned effects that ordinary lifting equipment can be used easily, the entire equipment can be surrounded, minimizing the influence on machining due to changes in the surrounding environment, and conversely, collecting gas generated by electric discharge machining. And the like, and danger prevention against electric shock and the like, and measures against electromagnetic interference and the like become easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric discharge machine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 EDM 2 Bed leg 3 Fixed cover 4a, 4b Covering guide 5 Moving cover 6a, 6b, 6c, 6d Door guide 7a, 7b, 7c, 7d Hinge 8a, 8b Openable cover

Claims (1)

[Claims] 1. A machine tool in which a work is placed on a bed on a front side and a machining operation is performed by a relative movement of a spindle and a work which can be moved and positioned on the bed, and surrounds a work area such as the column. In the cover, a fixed cover fixed to the bed leg which is a base part, surrounding the rear side surface, the left and right side surface and the upper surface of the work area with the rear side plate, the left and right side plate and the upper surface plate, and opening the front side surface, Cover guides are attached to the left and right sides of the bed legs, the left and right side surfaces and the upper surface of the work area are surrounded by left and right side plates and an upper surface plate, and the cover guides open the front of the fixed cover from the inside of the fixed cover or A movable cover that can move outward, and a door guide attached to the inside or outside of the left and right side plates of the movable cover, respectively, inside or outside the movable cover. A cover for a machine tool, comprising: a holding tool that is movable to a first position; and an opening / closing cover that is pivotally held by the holding tool and surrounds a front side surface of the work area when closed.