JPH1170438A - Machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To same labor for cleaning and perform chip disposal with less coolant by preventing the coolant and chips from being scattered over the rear of a machine tool. SOLUTION: A machine tool is structured so that a saddle 5 is moved in the X-axis direction on a bed 1, and a column 11 is moved in the Z-axis direction on a saddle 5. In this case, the vertical plate part 25 of an X-axis telescopic cover 29 formed integrally out of an inclined plate part 27 and a vertical plate part 25 is brought in contact with the side surface of the column 11 through a wiper 18. When the column 11 is moved in the Z-axis direction, a wiper action is performed so as to separate a working chamber 19 from a drive device part 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip processing structure for a machine tool in which a table on which a work is placed is fixed, that is, a main shaft moves in three directions of X, Y and Z.

[0002]

2. Description of the Related Art A ram-type machine tool in which a spindle head rotatably supporting a spindle moves in a Z-axis direction, or a spindle head rotatably supporting a spindle moves in a Y-axis direction on a front surface of a column, and the columns are X, Z. 2. Description of the Related Art Machine tools that move in a direction are known.

[0003]

A ram-type machine tool has a structure in which a spindle head for rotatably supporting a spindle moves in the Z-axis direction and a spindle head moves in the X and Y-axis directions. Therefore, the processing chamber and each drive unit can be completely separated by the telescopic cover, and chip processing is easy, but heavy cutting cannot be performed because the ram (spindle head) is moved in the Z-axis direction for processing. A machine tool that moves a column having a spindle head that moves in the Y-axis direction in the X and Z-axis directions can perform heavy cutting. However, since only the respective axis driving parts are covered by the telescopic cover, the machine is rearward. Chips are scattered up to this point, and there is a problem in chip processing.

For example, as shown in FIG. 3 as a side view,
A saddle 5 is arranged on the bed 1 via a guide surface 3 so as to be movable in the X-axis direction (perpendicular to the paper). On the saddle 5, a spindle head 9 having a spindle 7 is moved in the Y-axis direction (vertical direction). ) Is mounted so as to be movable in the Z-axis direction (left-right direction). The bed 1 has a spindle 7
A table 13 for fixing the work at the front position is attached via a chevron fixing plate 15.

[0005] As shown in the figure, the entire machine tool includes an outer wall member.
It is placed in a processing chamber 19 surrounded by 17, and the telescopic covers 21 and 21 that expand and contract with the movement of the saddle 5 and the column 11 allow coolant used during processing and chips generated during processing to be removed. Care is taken not to get into the sliding surface. Further, chips and coolant are appropriately collected in the coolant tank 23 by well-known means. However, since the entire machine tool is placed in the machining room 19, chips are scattered to the back of the machine tool,
A large amount of coolant was sprayed over the entire machine tool to prevent chips from accumulating.

SUMMARY OF THE INVENTION An object of the present invention is to provide a machine tool in which chips are not scattered behind the machine, can be processed with a small amount of coolant, and can be easily processed.

[0007]

According to the present invention, there is provided a machine tool in which a saddle moves on a bed in the X-axis direction and a column moves on the saddle in the Z-axis direction. The Z-axis telescopic cover and the X-axis telescopic cover composed of a vertical surface and a slope are intended to completely separate the processing chamber and each drive unit, and are connected to the lower end of the slope of the X-axis telescopic cover. In addition, a slope fixing plate is provided which is inclined to a coolant tank in the processing chamber, and is configured as follows in detail.

(1) A table fixed on a bed, a saddle moving on the bed in the X-axis direction, a column moving on the saddle in the Z-axis direction, and moving on the column in the Y-axis direction. A machine tool having a main spindle head, an outer wall member forming a processing chamber, a vertical portion and an inclined portion, and a drive unit for the saddle between the outer wall member and the saddle on both sides of the column. A first telescopic cover which is provided so as to cover the saddle, and which expands and contracts as the saddle moves in the X-axis direction; and an upper surface of the outer wall member and the column and the first telescopic cover when the saddle moves in the X-axis direction. A wiper for sealing the space between the cover and the side surface of the column, and a wiper provided on the bed, one end of which overlaps with the inclined portion of the first telescopic cover and the other end of which is a cutout of the front of the processing chamber. A tilt fixing plate that tilts toward the cutting fluid tank, and is provided between the table and the column so as to cover a drive unit of the column;
A second telescopic cover that expands and contracts as it moves in the axial direction. (2) The first wall member is provided on an inner upper surface of the outer wall member.
The machine tool according to the above (1), further comprising a nozzle for jetting a cutting fluid toward the telescopic cover.

[0009]

In the machine tool according to the present invention, the telescopic cover which expands and contracts with the movement of the saddle on both sides of the column and the upper surface of the column, and the wiper member mounted on the inner upper surface of the outer wall member forming the processing chamber always contact each other. ,
Since the wiper function is applied to the chips and coolant attached to the side of the column, the chips and coolant scatter to the rear of the machine tool without having to wrap the entire column with the outer wall of the processing chamber. Nothing. In addition, since the cutting fluid is jetted from the nozzle toward the telescopic cover, the coolant and chips are collected at one corner of the processing chamber along the inclined plate of the telescopic cover and the slope fixing plate attached to the bed. You can now collect them in tanks.

[0010]

FIG. 1 is an explanatory side view of a machine tool showing an embodiment according to the present invention, and FIG. 2 is an explanatory plan view of FIG.

As shown in the drawing, in the present invention, similarly to the conventional machine tool, a saddle 5 is arranged on a bed 1 via a guide surface 3 so as to be movable in the X-axis direction (perpendicular to the paper). On the saddle 5, a column 11 on which a spindle head 9 having a spindle 7 is movably mounted in the Y-axis direction (vertical direction) is arranged so as to be movable in the Z-axis direction (left-right direction). The bed 1 is provided with a table 13 for fixing a work at a position in front of the main shaft 7 via a chevron fixing plate 15.

In the present invention, the shape of the outer wall member 17 forming the processing chamber 19 at the position of the column 11 is such that a part of the outer wall member 17 contacts the upper surface and both side surfaces of the column 11 without surrounding the column 11, and the column 11 is 5 is configured to exert a wiping action on the contact surface when moving on the Z-axis direction.

That is, one end of a bent integrated telescopic cover 29 comprising a vertical plate portion 25 and an inclined plate portion 27 provided on both sides of the column 11 is connected to the saddle 5 via a support 5a attached to the saddle 5. The telescopic cover 29 is fixed to both sides, and rises along the plane portions on both sides of the column 11, respectively, and the other end 29b of the telescopic cover 29 is fixed to the processing chamber outer wall member 17, and the telescopic cover is fixed.
The wiper 12 is provided between the column 11 and the support 5a attached to the saddle 5 without fixing the side edges 29a, 29a of the column 11 on the column 11 to move the column 11 in the Z-axis direction. ,
The wiper 12 between the left and right telescopic cover side edges 29a and the column 5a is arranged to wipe the side surface of the column 11. When the column 11 moves in the X-axis direction, the saddle 5 moves together, so that the telescopic cover 29a fixed to the saddle 5 does not move relative to the side of the column 11, but simply moves as the telescopic cover. The gap does not occur for the chips and the coolant just by raising, so that the situation that the chips and the coolant leak out of the processing chamber 19 does not occur. Note that the processing room 19
Is formed so that the hanging wall 17a of the outer wall member 17 forming the wiping member performs a wiping action similarly to the telescopic cover 29.

The inclined plate portion of the bent integral telescopic cover 29 comprising a vertical plate portion 25 and an inclined plate portion 27
27 is a coolant tank 23 provided at the front edge of the processing chamber 14.
Is slidably superimposed on a slope fixing plate 31 that is inclined toward. On the inner upper surface of the outer wall member 17, a nozzle for jetting cutting fluid toward the vertical plate portion 25 of the telescopic cover 29 is provided.
Since 18 is provided and a flow of cutting fluid from the vertical plate portion 25 to the inclined plate portion 27 is formed, chips and coolant always move from the inclined plate portion 25 of the telescopic cover 29 to the slope fixing plate 31, The coolant is stored in the coolant tank 23 placed at the tip of the slope fixing plate 31.

In the same manner as in the case of the conventional apparatus, a front and rear telescopic cover 21 is provided between the front side of the saddle 15 and the front side of the column 11 so as to expand and contract in the normal front and rear direction.
The sliding surface between the column and the column 11 is protected.

[0016]

As described above, according to the present invention,
Splashes of chips and coolant can be prevented at the column portion without causing the situation of scattering chips and coolant to the rear of the column. Therefore, it is not necessary to surround the entire column with the outer wall member, and there is no need to cover a drive unit (such as an auxiliary device) such as a hydraulic device or MTC provided at the rear portion of the column or its portion.

That is, the column side edge of the telescopic cover is fixed to a saddle on which the column is movably mounted in the Z-axis direction. When the column moves, a wiper or a processing chamber provided on the side edge of the telescopic cover is provided. The outer wall member forming the outer wall member has a hanging wall with respect to the upper surface of the column to cause a wiper action to wipe off the attached chips and coolant.
When the saddle is moved in the axial direction, the saddle moves in the same manner, and there is no leakage of chips and coolant due to the action of the telescopic cover and the hanging wall.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a machine tool showing an embodiment according to the present invention.

FIG. 2 is an explanatory plan view of FIG.

FIG. 3 is a view similar to FIG. 1 showing a conventional example.

[Explanation of symbols]

 1 Bed 3 Guide surface 5 Saddle 9 Spindle head 11 Column 12 Wiper 13 Table 17 Outer wall member 18 Nozzle 19 Processing room 23 Coolant tank 25 Vertical plate portion 27 Slope plate portion 29 Bent telescopic cover 31 Slope fixing plate 33 Drive unit

Claims (2)

[Claims] 1. A table fixed on a bed, a saddle moving on the bed in the X-axis direction, a column moving on the saddle in the Z-axis direction, and moving on the column in the Y-axis direction. A machine tool having a spindle head, an outer wall member forming a processing chamber, a vertical portion and an inclined portion, and a drive device for the saddle is provided between the outer wall member and the saddle on both sides of the column. A first telescopic cover that is provided to cover and expands and contracts as the saddle moves in the X-axis direction; an upper surface of the outer wall member and the column and the first telescopic cover when the saddle moves in the X-axis direction A wiper that seals between a side surface of the column and a side of the column, one end of which is overlapped with an inclined portion of the first telescopic cover and the other end of which is for cutting a front portion of the processing chamber. An inclined fixing plate inclined toward a tank; and a second telescopic cover provided between the table and the column so as to cover a drive unit of the column, and which expands and contracts as the column moves in the Z-axis direction. And a machine tool comprising: 2. The machine tool according to claim 1, further comprising: a nozzle provided on an inner upper surface of the outer wall member, for jetting a cutting fluid toward the first telescopic cover.