JPH0246339B2 - RITSUSENBANTONOENKEITEEBURUOJUSURUKOSAKUKIKAINOKIRIKOSHORISOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chip processing device for a machine tool, and more specifically to a rotatably driven circular table for placing a workpiece, such as a vertical lathe. This invention relates to a chip processing device for a machine tool.

(Conventional technology) In recent years, labor saving in production processes has been actively promoted, and the automation of machine tools is progressing. We have reached the point where it is now possible to simply set up a machine tool and then operate the machine tool automatically, eliminating the need for a human to be present with the machine tool until the workpiece has been processed.

Therefore, it is one of the most important issues for the machine tool industry to be able to dispose of chips fully automatically, and various proposals have been made for this purpose. For example, the one described in Japanese Utility Model Publication No. 49-8533 is known.

This conventional method consists of a circular table that is rotated at high speed, an annular disk concentrically surrounding the table and rotated at low speed;
a chip receiving cover fixed to the floor or a machine fixing part at the outer peripheral edge of the annular rotary plate and forming an annular groove around the circular table with the annular rotating plate; one chip discharge port provided, a chip scraper that is swingably positioned within the annular groove using the mounting portion attached to the outer surface of one end of the discharge port as a fulcrum; It consists of a rotation drive mechanism that rotates a rotating plate at a low speed, and a swinging mechanism that swings the chip scraper in the groove, and rotates the annular rotating plate at a low speed to convey the chips. A chip removal device for a machine tool having a circular table such as a vertical lathe, characterized in that the chip scraper is oscillated to actively discharge chips from the discharge port. ” It was.

(Problems to be Solved by the Invention) In the conventional device, the annular rotating plate constituting the annular groove bottom was separated from the circular table and rotated at a low speed.

Therefore, a rotational drive mechanism for driving the annular rotary plate is required, and a support for guiding the rotation of the rotary plate is required, resulting in a complicated structure and high equipment cost.

Furthermore, since the conventional type mentioned above is not provided with a cutting oil recovery means, the cutting oil is discharged from the discharge port together with the chips, and a separate process is required to separate the cutting oil from the chips. . Further, since the cutting oil is discharged with adhering to the chips, the value of the chips as scrap decreases, and in addition, since the cutting oil cannot be recovered, there is a problem that the amount of cutting oil consumed increases.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a chip processing device for a machine tool such as a vertical lathe having a circular table, which has a simple structure and can efficiently collect cutting oil.

(Means for Solving the Problems) In order to achieve the above object, the present invention takes the following measures. That is, the feature of the present invention is that an annular groove is provided around the outer periphery of a circular table that is rotationally driven around a vertical axis, and the chips on the circular table are received into the annular groove. A groove bottom structure in which the fixed side is equipped with a chip scraper for discharging chips inside the inner part radially outward, and the annular groove is fixed to the outer circumferential surface of a circular table and is driven to rotate together with the circular table. and an annular cover attached to the fixed side around the outer periphery of the groove bottom component, and a gap for draining cutting oil is provided between the outer periphery of the groove bottom component and the inner periphery of the annular cover. It is formed over the entire circumferential direction, and furthermore, an annular receiving groove for collecting cutting oil is provided below the gap and in contact with the inner surface of the annular cover.

(Function) According to the present invention, the groove bottom constituent member of the annular groove is fixed to the outer circumferential surface of the circular table that is rotationally driven, so that it can be rotationally driven together with the circular table without requiring a separate rotational drive device. . Then, the chips generated on the circular table fall onto the groove bottom component of the annular groove, rotate together with the groove bottom component, and the centrifugal force separates the cutting oil adhering to the chips.

Then, the chips further move in the circumferential direction together with the groove bottom constituent member, collide with a chip scraper provided on the stationary side, and are discharged in a radially outward direction of the annular groove.

On the other hand, the cutting oil separated from the chips by centrifugal force is blown outward from the outer periphery of the groove bottom component and adheres to the inner surface of the annular cover. The liquid flows downward through the gap formed between the inner circumference of the annular cover and is collected by the annular cover provided in contact with the inner surface of the annular cover.

(Example) Next, an example of the present invention will be described in detail with reference to the drawings.

1 to 5 show an embodiment of the present invention. Reference numeral 1 denotes a circular table, which is supported by a base (not shown) and rotated around a vertical axis. The upper surface is used as a workpiece mounting surface.

Incidentally, above the circular table 1, appropriate cutting means such as a cutting tool and an oil supply device (not shown) are arranged.

Reference numeral 2 denotes an annular groove, which is provided as a concentric circle around the outer circumference of the circular table 1, and receives chips on the circular table 1.

Reference numeral 3 is a chip scraper that discharges chips in the annular groove 2 radially outward.

The annular groove 2 is a groove bottom component member 4 with an L-shaped cross section that is attached to the outer peripheral surface 1a of the circular table 1 with screws not shown.
and an annular cover 5 attached to the fixed side around the outer periphery of the groove bottom component 4, where the groove bottom component 4 is rotationally driven together with the circular table 1.

The annular cover 5 has a small diameter inner surface 5a and a large diameter inner surface 5.
c, and a horizontal inner surface 5b that connects them, and in this example, only the upper surface thereof is fixed to the floor 6 shown by the two-dot chain line.

Note that the workpiece mounting surface 1b of the circular table 1 is flush with the upper surface of the floor 6 at the same height.

Between the outer periphery of the groove bottom component 4 and the inner periphery of the annular cover 5, a gap 7 for discharging cutting oil is formed over the entire circumferential direction.

In this embodiment, as shown in FIG.
A gap 7 through which cutting oil can pass is formed between the upper surface of the outer end portion and the horizontal inner surface 5b disposed slightly above the upper surface.

The outer end of the chip scraper 3 is fixed to the annular cover 5, and as shown in FIG. Furthermore, the mounting angle θ of the chip scraper 3 is 45° to 60° as shown in FIG.

An annular cover 5 near the outer end of the chip scraper 3 is provided with an opening 5d.
A chip guiding receiver 8 consisting of a front wall 8a, a rear wall 8b and a bottom wall 8c is connected outwardly and diagonally downward.
The rear wall 8b is provided continuously with the chip scraper 3, and the height of the vicinity of the continuous part is higher than the height of the lower part (see Fig. 5), and the height of the lower part is , is the same as the height of the front wall 8a.

A conveyor 10 is provided at the lower end of the chip guide receiver 8 for automatically conveying the chips 9 to a chip storage box (not shown) installed at an appropriate location.

In addition, a cover 5 located below the groove bottom component 4
A receiving groove 11 for collecting cutting oil is provided on the large diameter inner surface 5c.

That is, in this example, an annular receiving groove 11 for collecting cutting oil is provided on the large-diameter inner surface 5c of the cover corresponding to the lower side of the gap 7.

(Operation of the embodiment) According to the above-described embodiment of the present invention, the chips 9 generated on the circular table 1 and falling onto the groove bottom component 4 of the annular groove 2 rotate together with the table 1, and While the cutting oil adhering to the chips 9 is separated by the centrifugal force, the chips 9 themselves move in the circumferential direction within the annular groove 2, collide with the chip scraper 3, and move in the direction of the chip guiding receiver 8, i.e. , conveniently viewed radially outward. The chips 9 that have fallen into the chip guiding receiver 8 are conveyed by a conveyor 10 and are completely automatically accumulated in the chip storage box (not shown).

Similarly, the cutting oil that has fallen onto the groove bottom component 4 of the annular groove 2 is blown outward by centrifugal force.
It passes through the gap 7 between the upper surface of the outer end of the groove bottom component 4 and the horizontal inner surface 5b, and then travels along the large diameter inner surface 3c and accumulates in the receiving groove 11. The cutting oil accumulated in the receiving groove 11 is recovered by an appropriate means (not shown).

(Effects Unique to Embodiment) According to the embodiment of the present invention described above, since the groove bottom constituent member 4 has an L-shaped cross section, the member 4 can be easily fixed to the side surface 1a of the circular table 1 with screws. Can be done.

Furthermore, since the gap 7 for separating the cutting oil is formed between the upper surface of the outer end of the groove bottom component 4 and the horizontal inner surface 5b, it is easy to obtain accurate dimensions of the gap 7. be.

Furthermore, since the height of the rear wall 8b of the chip guide receiver 8 near the continuous part with the chip scraper 3 is increased, the chips 9 that collide with the chip scraper 3 and are returned to the There is almost no possibility that the powder will spill outside of the powder guide receiver 8. The mounting angle θ of the chip scraper 3 was set to 45° to 60°, but it was set at 45° for a circular table 1 with a high rotation speed, and closer to 60° for a relatively small rotational speed. If it is an angle, the chips 9 are the chips guiding receiver 8
It was found that it was conveniently guided in the direction of

The present invention has been described above in detail based on examples, but
The present invention is not limited to the examples, and various changes can be made without departing from the spirit of the invention.
For example, in the embodiment, the cross section of the groove bottom component is L
Although it is a type, it can also be made into a T-shape or any other suitable shape, and instead of fixing the groove bottom component to the circular table with screws, it can be fixed by welding or any other suitable fixing means, It can also be formed integrally with the table. Furthermore, the annular cover can be fixed to a base that supports a circular table instead of being fixed to the floor, and the inner surface of the annular cover can be connected to a small diameter inner surface, a large diameter inner surface, and a horizontal inner surface that connects them. Instead, it is also possible to form a cylindrical inner surface of the same diameter and provide a gap between the cylindrical inner surface of the same diameter and the outer peripheral edge of the groove bottom component to allow cutting oil to pass through. .

Furthermore, the cross-sectional shape of the chip guiding receiver (fourth
(see figure), the front and rear walls and the bottom wall can be curved (an arc with an appropriate radius) to smoothly connect them, or the cross-sectional shape of the bottom wall can be semicircular. It is. A chip storage box may be provided directly below the chip guide receiver without providing a conveyor, and the chip scraper and chip guide receiver may be placed in any suitable position on the side of the table. They can also be arranged at an angle.

(Effects of the present invention) According to the present invention, since the groove bottom constituent member is fixed to the outer peripheral surface of the circular table, as shown in the conventional example, a separate drive device for rotating the groove bottom constituent member, A rotary guide support is not required, making the structure simple and inexpensive.

Furthermore, according to the present invention, since cutting oil is separated and recovered from chips using centrifugal force, efficient separation can be achieved and the conventional process of separating cutting oil from chips is no longer necessary. Moreover, the value of chips as scrap is improved, and cutting oil can be reused.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention;
The figure is a partially cutaway sectional view (view from the - line arrow in Figure 2),
Figure 2 is a plan view (a view viewed from the - line in Figure 1), Figure 3 is a partially omitted side view (a view viewed from the - line in Figure 1), and Figure 4 is a view taken from the - line in Figure 3. The perspective view, FIG. 5, is a view taken along the - line arrow in FIG. DESCRIPTION OF SYMBOLS 1... Circular table, 2... Annular groove, 3... Chip scraper, 4... Groove bottom component, 5... Annular cover, 7... Gap, 11... Receiving groove for cutting oil collection.

Claims (1)

[Claims] 1. An annular groove 2 is provided around the outer periphery of a circular table 1 that is rotationally driven around a vertical axis, and is configured to receive chips 9 on the circular table 1 into the annular groove 2. A chip scraper 3 for discharging chips 9 in the groove 2 outward in the radial direction is provided on the fixed side, and the annular groove 2 is fixed to the outer peripheral surface of the circular table 1 so that the chip scraper 3 discharges the chips 9 in the groove 2 outward in the radial direction. Consisting of a rotationally driven groove bottom component 4 and an annular cover 5 attached to the fixed side around the outer periphery of the groove bottom component 4, the outer periphery of the groove bottom component 4 and the inside of the annular cover 5 A gap 7 for discharging cutting oil is formed along the entire circumferential direction between the annular cover and the annular cover. A chip processing device for a machine tool having a circular table, such as a vertical lathe, characterized in that the device is provided in contact with the inner surface of the machine tool.