JPH0748363Y2 - Pallet table chip removal structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a chip removing structure of a pallet table for fixing a pallet having a work attached to its upper surface and processing the work.

"Prior Art" Since machining positions are close to each other between a pallet and a pallet table in a machine tool, chips are particularly attached and accumulated, and the chips cause poor seating of the pallet. In the past, however, air blow was only provided as a means for removing chips in this portion.

"Problems to be solved by the invention" However, it is difficult to completely blow away fine chips attached to the table surface etc. only by providing an air blow like the conventional technique, and the purpose of chip removal is completely eliminated. Was difficult to achieve, and there was a risk of defective machining due to poor seating of the pallet, and reduced accuracy.

The present invention has been made by paying attention to such problems in the conventional technique, and provides a chip removing structure for a pallet table that can completely remove even small chips from the pallet table and does not cause seating failure of the pallet. The purpose is to do.

[Means for Solving the Problems] The gist of the present invention for achieving such an object is to provide a chip removing structure of a pallet table for fixing a pallet to which a work is attached to the upper surface and processing the work. The base part of the pallet table surrounding the lower part of the mounting surface of the pallet is formed into a mountain shape having a middle-high steep slope with a flat surface at the top, and the flat surface of the top is covered from above to guide the coolant to the lower surface. Chip removal of a pallet table, characterized in that a groove is formed and a minute gap is formed between the groove and the flat surface, and a cover member is provided from the minute gap to eject the coolant for chip removal from the angled slope. Exists in structure.

[Operation] In the chip removing structure of the pallet table, the base of the pallet table surrounding the lower part of the pallet mounting surface is formed into a mountain shape with a medium-high steep slope having a flat surface on the top, and the flat surface of the top is covered from above. , A guide groove for guiding the coolant is formed on the lower surface side, and a minute gap is formed between the groove and the flat surface,
Since the structure is provided with a cover member for ejecting the coolant for chip removal from the minute gap to the mountain slope, the coolant is sprayed over the entire surface of the pallet table base, and the mountain shape forms a steep slope. Therefore, not only large chips but also very fine chips are surely washed away, and the chips do not stay.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

First, the configuration around the pallet table will be described with reference to FIGS. 4 and 5.

As shown in FIG. 4, the pallet table 10 is provided on a saddle 41 which is guided by guide rails 40a and 40b on a bed 40 and moves in a direction perpendicular to the plane of the drawing in the figure.

A ball screw 42 for driving the saddle 41 is arranged on the bed 40 in a direction perpendicular to the plane of the drawing. In order to protect the ball screw 42 and the guide rails 40a and 40b, the upper surface thereof has a chevron shape as shown in FIG. The protective cover 43 is provided. The arrow A in FIGS. 4 and 5 indicates the front side of the machine.

The pallet table 10 is arranged on the upper surface of the saddle 41 so as to be rotatable about a rotation center C shown in FIG.

The pallet table 10 is provided with a pair of pallet guide fixing portions 12 and 13 sandwiching the rotation center C. The pallet P has two guide fixing grooves at positions corresponding to the pallet guide fixing portions. Has been done.

The pallet guide fixing portions 12, 13 are fixed to a pair of vertically movable clamp members 14, 15 which are provided at left and right symmetrical positions with respect to the front surface rotation center C of the table body 11. Are provided with a large number of guide rollers 16 so that the pallets P can be smoothly replaced.

The pallet guide fixing portions 12 and 13 move up and down by the clamp members 14 and 15. At the time of descending, the pallet P is pressed and fixed to the plurality of seats 18 of the table body 11 by the pallet guide fixing surfaces 12a and 13a. Further, 17 and 17 are pallet positioning pins.

The table body 11 includes the rotation center C, both clamp members 14,
As shown in Fig. 4, a ridge line connecting the centers of 15 forms a mountain-shaped slope S with a steep slope in the front and back. In this embodiment, the inclination is about 25 degrees with respect to the horizontal plane.

In the configuration around the pallet table as described above, the chip removing structure 20 is configured as described below.

FIG. 1 is an enlarged view of a part of FIG.
2 and 3 are sectional views taken along line II-II in FIG. 5, respectively.
The III-III cross section is shown.

As shown in each of the above-mentioned cross sections, a flat portion H is provided at the top of the table main body 11 where the mountain-shaped slope S meets.

In the straight portion of the flat portion H, as shown in FIG. 2, the upper surface is formed into a mountain shape, and a guiding groove for guiding the coolant is provided in the center of the lower portion.
A straight cover member A21 in which 22 is engraved over the entire length is attached by bolts 23. The bolt 23 for attaching the cover member A21 is attached to the table body 11 with a spacer 24
Is fixed via the bottom surface flat portion 2 of the cover member A21.
A minute gap g1 is formed between 1a and the flat portion H. Further, edge portions 21b for directing the coolant ejected from the minute gap g1 downward are provided at both lower end portions of the cover member A21. A pair of such cover members A21 are provided on the left and right of the center of rotation C, and a pair of cover members are provided outside the clamp members 14 and 15.
It is provided as B25. The difference between the cover member B25 and the cover member A21 is that the latter guide groove 22 communicates with the annular guide groove 28 of the bar member D26 and the guide groove 32 of the cover member E31 at both ends, whereas the former. In 25, one end is a cover member E3
The first guide groove 32 communicates with the first guide groove 32, but the other end is that the guide grooves of the cover member 25 communicate with each other. Similarly, the minute gap g2 is provided.

On the other hand, at the position of the center of rotation C, a cap-shaped circular cover member D26 is provided as shown in FIG.

The cover member D26 includes the cover member A across the lower center.
A guide groove 27 communicating with the guide groove 22 of 21 is engraved, and a concentric annular guide groove 28 communicating with the guide groove 27 inside is engraved. And this cover member D2
6 also the table body 1 by the bolt 30 through the spacer 29
1 is attached to the lower surface flat portion 26a and the flat member H.
A small gap g3 is provided between and. Further, an edge portion 26b is provided on the outer periphery of the lower portion so as to project like the cover member A21.

On the other hand, at the center of rotation C of the table body 11, there is provided a spout 19 for guiding the coolant from below as shown in FIG.

In the clamp members 14 and 15 to which the pallet guide fixing portions 12 and 13 are attached, the fixing portion attachment surfaces 14a and 15a to which the guide fixing portions 12 and 13 are attached are higher than the flat portion H by one step. An annular cover member E31 is provided on the flat portion H of the periphery where the outer circumferences of the surfaces 14a and 15a are lowered.
Is provided.

As shown in FIG. 1, the cover member E31 is provided with a guide groove 32 on the lower surface side over the entire circumference. A part of the guide groove 32 communicates with the guide groove 22 of the cover member A21.
Further, the cover member E31 is attached to the table body 11 by a bolt 33 via a spacer (not shown), and a minute gap g4 is provided between the flat portion 31a on the lower surface thereof and the flat portion H of the table body 11. Has been. An edge portion 31b that directs the coolant downward is provided on the outermost periphery of the cover member E31.

Next, the operation will be described.

The pallet P with the work attached is the pallet table 10
When the machine tool is set in the cutting operation, the coolant flows into the spout 19 together with other main parts. Then, this coolant is injected from the guide groove 27 of the cover member D26 through the annular guide groove 28 to the outside through the minute gap g3. The injected coolant hits the edge portion 26b, is directed downward, and flows downward along the mountain slope S, and the mountain slope S
The chips that are trying to accumulate on top are washed away.

On the other hand, the coolant flows from the annular guide groove 28 to the left and right cover members A21.
Guide groove 22, cover member E31 guide groove 32, and cover member B
It is guided to the guide groove of 25, jetted from each of the minute gaps g1, g4, g2, and is directed downward by the edge portion 21b and the like similarly to the above, and vigorously flows down the mountain-shaped slope S to push away the chips. As described above, since the minute gaps g1 and the like are open without any gap at the top of the mountain-shaped slope S, there is no portion where the coolant does not flow, and no chips are left over the entire surface.

Further, in this embodiment, the case where the pallet clamp members are provided at two locations has been described, but the chip removing structure is also provided when the pallet clamp members are located under the same central portion of the pallet rotating portion as shown in FIG. It is possible.

[Advantage of the Invention] According to the chip removing structure of the pallet table according to the present invention, the base portion of the pallet table surrounding the lower part of the pallet mounting surface is formed into a mountain shape having a middle-high steep slope with a flat top surface. The flat surface of the top is covered from above, and a guide groove for guiding coolant is engraved on the lower surface side to form a minute gap with the flat surface, and the coolant for chip removal is jetted from this minute gap to the mountain slope. Since the cover member is provided, the coolant is sprayed over the entire surface of the base of the pallet table without interruption, and since the mountain shape forms a steep slope, not only large chips but also very fine chips can be used. The pallets will be washed out without chips, and the pallets will not be seated poorly.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention.
The figure is a plan view of the chip removing structure of the pallet table, Fig. 2 is a sectional view taken along the line II-II in Fig. 1, and Fig. 3 is the same as III.
-III sectional view, FIG. 4 is a side view showing the configuration around the pallet table, FIG. 5 is a plan view of the pallet table, and FIG. 6 is a plan view of another embodiment. C: rotation center, S: chevron slope, H: chevron flat part 10: pallet table 20: pallet table chip removal structure 21: cover member A, 22: guide groove 25: cover Member B, 26 ... Cover member D 27 ... Guide groove, 28 ... Annular guide groove 31 ... Cover member E, 32 ... Guide groove g1 to g4 .. Minute gap

Claims (1)

[Scope of utility model registration request] 1. A chip removal structure for a pallet table for fixing a work-mounted pallet to an upper surface to process the work, wherein a base of the pallet table surrounding a lower part of the pallet mounting surface is provided on the top. A mountain shape having a medium-high steep slope having a flat surface, covering the flat surface of the top from above, and engraving a guide groove for guiding the coolant to the lower surface side, and forming a minute gap between the flat surface, A chip removing structure for a pallet table, characterized in that a cover member for ejecting a chip removing coolant is provided from the minute gap to the mountain-shaped slope.