JP2813944B2 - Pallet mounted cover device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a pallet-mounted cover device having a two-sided swiveling pallet on a table top of a machine tool.

[0002]

2. Description of the Related Art Conventionally, a machine tool provided with a two-sided swiveling pallet on a table upper surface, and a two-sided swiveling pallet provided with a pallet-mounted cover device is disclosed in Japanese Patent Publication No. 4-26.
The technology described in Japanese Patent No. 974 has been proposed as a known means. The feature of the cover device is that the worktable is rigidly connected with a chip-repelling bulkhead extending vertically along its diameter, the chip-repelling elements facing each other on both sides of a vertical axis. And the bottom edge of the chip-repelling element is located above the workpiece to be clamped on the workpiece table. "

[0003] By taking the above measures, it is possible that "the chip-repelling element is no longer deflected by the workpiece, but only performs a very slight pivoting movement about the horizontal axis. The movement is defined by the thickness of the swarf barrier. "

Next, the technical background of the development of the pallet-mounted cover device disclosed in Japanese Patent Publication No. 4-26974 will be described. First, a machine tool provided with a cover device of this type is already known from U.S. Pat. No. 2,443,734 and JP-B-59-43073. The cutting debris preventing element used in the machine tool is configured as a rigid swing flap or a partition plate. These swinging flaps and partition plates are mounted on the work table in a horizontal position. While the workpiece is being machined on the machining side, these cutting debris protection elements protect the facing side facing the workpiece from chips, coolant, etc., of the material scattered around. It is stated that the loading side can take out the machined workpiece first and then mount the unprocessed workpiece without covering chips and coolant.

[0005] However, with only the above-mentioned swarf flap and the chipping prevention element by the partition plate, the work piece is machined on the machining side.
It is not possible to completely prevent chips, coolant and the like from jumping over the open space above the cutting debris preventing element and scattering toward the charging side. For this reason, a part of the chips and the coolant liquid is scattered to the charging side, which hinders the operator during the replacement work of the processed and unprocessed workpiece.

In order to solve the above problems, Japanese Patent Publication No. 60-20139 and Japanese Patent Publication No. 58-15
080 and Japanese Utility Model Application Laid-Open No. 63-182839 have been proposed.

First, according to the technique described in Japanese Patent Publication No. 60-20139, a pallet guard is set upright at a position passing through the center of rotation on a rotatable deck, and this pallet guard is attached to the rotatable deck. The opening formed between the pallet guard and the mechanical guard fixed to the machine side is integrally bent by the swiveling motion, and the opening formed between the vertically extending side edges of the pallet guard is flexibly bent by an elastic material (elastomer material). It is closed elastically. With the elastic material attached to the pallet guard and the mechanical gart, the closing action of the pallet guard between the processing side and the loading side is more complete, and chips and coolant liquid etc. are transferred to the loading side. It is designed not to scatter.

In the technique described in Japanese Utility Model Publication No. 58-15080, a cover having an opening is fixed on a slide table, and a jig body on which a work is mounted is moved into the cover through the opening by a moving device. It is provided with a sealing member which can be moved in and out, and which comes into contact with the outer peripheral surface of the jig main body at the time of processing the work to seal the opening. Thereby, the closing action of the cover between the processing side and the loading side is made more complete, so that chips, coolant and the like do not scatter to the loading side.

Further, the technique described in Japanese Utility Model Laid-Open Publication No. Sho 63-182839 allows an index table to be rotated on a work table in a horizontal direction by a rotating shaft, and a dividing line near the axis of the index table. A screen-type protective cover is arranged, and a main body cover that covers a front portion of the machine tool while maintaining a small gap with respect to an upper edge and left and right edges of the screen-type protective cover is fixedly arranged on the machine tool. It is. Thereby, without hindering the turning of the index table and the screen-type protective cover, it is possible to rotate in the horizontal direction by the rotation axis, and to complete the closing operation of the cover between the processing side and the loading side, Chips and coolant were not scattered to the loading side.

[0010]

However, there are various problems in each of the known examples in which the closing action of the cover is more complete. In Japanese Patent Publication No. 60-20139, although an elastic material attached to a pallet guard abuts against a mechanical guard to elastically close it,
Chips and coolant generated during the processing of the work adhere to the elastic member and its surrounding guard. If the deposit is made of an aluminum material, it will not fall from the elastic material due to its light weight, and will have an adverse effect on the closing action of the opening with long-term use.

In Japanese Utility Model Publication No. 58-15080, chips and coolant adhere and accumulate on the seal member and the outer peripheral surface of the jig body with which the seal member contacts, which adversely affects the closing action. And the actual opening 63-1828
In Japanese Patent Publication No. 39, since there is a slight gap between the main body cover and the screen type protective cover, the coolant liquid leaks from this to the charging side and chips adhere to the gap, resulting in complete blockage. No effect.

In view of the above-mentioned various problems, even in the above-mentioned Japanese Patent Publication No. 4-26974, the problems remain. First, similarly to the technique described in Japanese Patent Publication No. 60-20139, a gap existing between a cutting-dust-preventing partition on a work table and a second cutting-dust-preventing partition disposed above the partition is provided. In order to close, it is overlapped by being elastically deformed by a cutting waste preventing element (elastic material). Therefore, adhesion and accumulation of chips and coolant on and around the cutting debris preventing element (elastic material) are promoted, which adversely affects the closing action.

[0013] Next, the cutting waste preventing partition presses the cutting waste preventing element (elastic material), thereby overlapping and elastically deforming, so that the two closely contact each other and exhibit a closing function. For this reason, the adhesion is impaired due to the overlapping action repeated over a long period of time, the aging, and the adverse effect of the coolant, and the adhesion is not guaranteed.

Further, when the spindle head or the like is rapidly advanced in the front-rear direction of the machine tool, the air pressure in the working space largely fluctuates due to a sudden change in volume in the working space. As a result, the cutting debris preventing element (elastic material) is swept up and opens instantaneously, causing external leakage of coolant liquid and chips.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and actively scrapes off chips and coolant from adhering to an elastic material serving as a cutting debris preventing element. It is an object of the present invention to provide a pallet-mounted cover device having functions such as being unaffected by the pallet.

[0016]

According to a first aspect of the present invention, a cover body that separates the front and rear of the two-sided pallet is fixedly mounted in a central portion which is a turning center of the two-sided pallet. In a pallet-mounted cover device in which a fixed cover fixed to a main body of a machine is arranged, a shielding curtain is suspended on at least one side surface before and after a lower edge of the fixed cover, and the shielding curtain and an upper edge of the cover body are suspended. A pallet-mounted cover device, wherein a gap is formed between the two-sided pallets, and the upper edge of the cover body presses and turns the shielding curtain when the two-sided pallet is turned and turned.

According to the first aspect of the present invention, a shielding curtain is hung on at least one of the front and rear sides of the lower edge of the fixed cover to form a bent maze space in a gap between the shielding curtain and the cover body. The machining area side and the work exchange area side of the worker are separated by a cover body, and the gap between the cover body and the fixed cover is also shielded in a maze by a shielding curtain, so that coolant and chips are removed from the machining area side by the work piece. Prevents leakage to the replacement area. Further, the processing region side and the work exchange region side allow the flow of only air in the atmosphere on both sides thereof, and perform the ventilation function of the processing region.

Further, when the two-sided pallet is unclamped and turned, the upper edge of the swiveling cover body is rotated while pressing the shielding curtain, so that chips, coolant and the like adhered to the shielding curtain during processing are attached. The kimono is wiped off and the front and rear shielding curtains are cleaned.

According to a second aspect of the present invention, there is provided a pallet mounting apparatus according to the first aspect, wherein a large number of cuts are made in a lower edge of the shielding curtain to form a plurality of strip-shaped shielding curtain pieces. It is a type cover device.

According to the second aspect of the present invention, a large number of strip-shaped shielding curtain pieces are formed on the lower side of the shielding curtain hung on at least one of the front and rear sides of the lower edge of the fixed cover. The shielding curtain pieces that are pressed and deformed become lighter, so that the upper edges of the cover body can easily be individually overcome, and the lower edges of the shielding curtain can easily be separated from the upper edges of the cover body.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below.
FIG. 1 is a perspective view of a machine tool provided with a pallet-mounted cover device of the present invention, and FIG. 2 is a side view showing a pallet-mounted cover device of the present invention. FIG. 3 is a perspective view of the pallet-mounted cover device, FIG. 4 is a plan view showing a two-sided pallet when clamping, and FIG. 5 is a plan view showing a two-sided pallet turning.

1 and 2, a machine tool 10 includes X-axis and Y-axis sliding members 2 and 4 on a bed 1.
The shaft sliding member 2 includes a head 3 that moves up and down (moves in the Z axis). A tool is attached to the main shaft S of the head 3, and the tool processes a work (not shown) mounted and fixed on a revolving two-sided pallet P. The two-sided pallet P is located at the front of the machine tool 10 and has a work exchange area P1 on the front side,
And a machining area P2 on the spindle side. The splash guards 5, 6 arranged on the left and right of the machine tool 10 have a fixed cover 7 extending in the X-axis direction on the front surface following the front edges 5A, 6A. Then, the fixed cover 7
Is provided with a pallet-mounted cover device 20 on a two-sided pallet P located immediately below.

The pallet-mounted cover device 20 comprises:
As shown in FIGS. 2 and 3, a cover body 21 that separates the front and rear is fixed to a vertical position by a lower edge 21 </ b> A at a central portion serving as a turning center O of the two-sided pallet P. That is, the cover body 21 disposed on the center separation line passing through the turning center O of the two-sided pallet P has its lower edge 21A fixed to the pallet upper surface in a vertical posture. Further, shielding curtains 8 and 9 are hung on both front and rear sides of the lower edge 7A of the fixed cover 7. The upper edge 21B of the cover body 21 is inserted into the space E between the front and rear shielding curtains, thereby forming a bent maze space. Thus, 2
The upper edge 21 of the cover body 21 when the surface pallet P is turned in reverse.
B pushes and separates the front and rear double shielding curtains 8 and 9 and rotates.

Here, the upper edge 21B of the cover body 21
Will be described in more detail in order to facilitate understanding of the configuration in which the front and rear double shielding curtains 8 and 9 are pressed and rotated.
The front and rear widths of the lower edge 7A of the fixed cover 7 are, as understood from the illustrations of FIGS.
The dimensional relationship is set to be 3 to 5 times larger than the front and rear width of B (the plate thickness of the cover body 21). As shown in FIGS. 2 and 3, when the longitudinal directions of both covers 7 and 21 coincide with each other, upper edge 21B of cover body 21 is located at an intermediate position of lower edge 7A of fixed cover 7 (central portion of front and rear sorting). It is a mutual relationship that becomes

When the longitudinal directions of the two covers 7 and 21 coincide with each other, the upper edge 21 B of the cover body 21 is fixed to the fixed cover 7.
Is located at an intermediate position of the lower side edge 7A (the central portion of the front and rear sorting), and the front and rear double shielding curtains 8 and 9 are attached to the cover body 21.
The relative positional relationship determined by the front and rear widths of the shielding curtains 8 and 9 with respect to the upper edge 21B and the length of the lower edge is appropriately set so as to be completely independent from the upper edge 21B.

As shown in FIG. 3, the shielding curtains 8, 9 suspended on the front and rear sides of the lower edge 7A of the fixed cover 7 are provided with a number of cuts 8A, 9A in the lower side in the vertical direction. , A large number of strip-shaped shielding curtain pieces. When a large number of shielding curtain pieces are formed by making the cuts 8A and 9A, each of the strip-shaped shielding curtain pieces that are pressed and deformed when the cover body 21 is turned becomes light, and it is easy to individually climb over the upper edge 21B. When the longitudinal directions of the two covers 7 and 21 match,
The lower edges of the shielding curtains 8 and 9 are easily separated from the upper edge 21B of the cover body 21 individually, which is a most desirable embodiment.

Pallet-mounted cover device 20 of the present invention
Is configured as described above, and operates as follows. First, when the two-sided pallet P is clamped, as shown in FIGS. 2, 3, and 4, the machining area P2 side of the spindle S and the work exchange area side where the worker M is located are separated by the cover body 21,
Further, the inside E of the gap between the cover body 21 and the fixed cover 7 is also shielded by the front and rear shielding curtains 8 and 9, so that coolant and chips do not leak from the processing area P2 side to the work replacement area P1 side.

That is, the shielding curtains 8, 9 suspended on the front and rear sides of the lower edge 7A of the fixed cover 7 before and after the upper edge 21B of the cover body 21 arranged at the center of the two-sided pallet P.
Have a maze-like double wall configuration with the gap E maintained.
For this reason, the guard is doubly guarded so that the swarf generated by the machining of the spindle S is prevented from scattering toward the machining area P2.
Further, the coolant sprayed toward the work also scatters to the covers 7, 21 and the shielding curtain 8, but the lower edge 7
With the shielding curtains 8 and 9 suspended on both sides of A
The coolant is double guarded so as to stop the coolant on the processing area P2 side. At this time, the machining area side and the workpiece exchange area P1
The sides allow the flow of gas only in air in the atmosphere on both sides, and perform the ventilation function.

As shown in FIG. 5, when the two-sided pallet P is unclamped and turned, the upper edge 21B of the turning cover 21 turns while pushing the shielding curtains 8 and 9 apart. Thereby, the upper edge 2 of the cover body 21
1B simultaneously presses and deforms the swiveling side of the strip-shaped shielding curtains 8 and 9 and individually passes over the upper edge 21B from both outer ends in the outer diameter direction toward the center. Subsequently, the upper edge 21B of the cover body 21 released from the shielding curtains 8 and 9 pushes the turning progress sides of the shielding curtains 8 and 9 all at once before being turned 180 degrees and deforms the same, and from the turning center O side. The upper edge 21 </ b> B is easily individually moved over both the outer ends. One of the two-sided pallets P
At the end of the 80-degree reversal, as shown in FIGS.
9, the lower edge 7 of the fixed cover 7
A is separated as a maze-like double wall form which keeps a gap E formed by the shielding curtains 8 and 9 suspended on both front and rear sides of A.

As described above, when the two-sided pallet P is turned in reverse, the upper edge 21B of the cover body 21 simultaneously pushes the turning progress side of the strip-shaped shielding curtains 8 and 9 to be deformed and easily gets over individually. Therefore, the upper edge 21B exhibits a scraping action of turning while scraping off chips, coolant and the like adhering to the shielding curtains 8 and 9. This solves the problem that chips, coolant, and the like adhere to the shielding curtains 8 and 9 and increase the amount thereof.

The present invention is not limited to the above-described embodiment, and design changes can be made within the gist of the present invention. For example,
The present invention is also applicable to a machine tool for both vertical and horizontal use, and the shielding curtains 8 and 9 may each be a single continuous band. Furthermore,
The shielding curtains 8 and 9 may have a configuration in which at least one of the shielding curtains 8 or 9 on the front and rear sides is suspended. Also in this configuration, the inside of the gap between the cover body and the fixed cover is shielded in a single maze by the shielding curtain, and the operation and effect of preventing the coolant and chips from leaking from the machining area side to the work replacement area side. Be demonstrated.

[0032]

According to the first aspect of the present invention, the shielding curtain is hung on at least one of the front and rear sides of the lower edge of the fixed cover,
Since a gap is formed between the shielding curtain and the cover body, thereby forming a bent maze space, the machining area side and the work exchange area side where the worker is located are separated by the cover body, and the cover body is separated. The gap between the cover and the fixed cover is also shielded in the form of a maze by the front and rear shielding curtains, and the effect of preventing the coolant and chips from leaking from the machining area to the workpiece replacement area is exhibited.

Also, at the time of unclamping the two-sided pallet in reverse rotation, the upper edge of the revolving cover body rotates while pressing the shielding curtain, so that chips, coolant and the like adhered to the shielding curtain during processing are attached. The kimono is wiped off, and the front and rear shielding curtains are cleaned, and the effect is exhibited.

According to the second aspect of the present invention, a large number of strip-shaped shielding curtain pieces are formed on the lower side of the shielding curtain hung on at least one of the front and rear sides of the lower edge of the fixed cover. The shielding curtain pieces that are pushed and deformed are lightened, and an effect is obtained that it is easy to individually get over the upper edge of the cover body.

[Brief description of the drawings]

FIG. 1 is a perspective view of a machine tool provided with a pallet-mounted cover device of the present invention.

FIG. 2 is a side view of a machine tool provided with the pallet-mounted cover device of the present invention.

FIG. 3 is a perspective view of a pallet-mounted cover device of the present invention.

FIG. 4 is a plan view showing a state where a two-sided pallet is clamped.

FIG. 5 is a plan view showing a state where the two-sided pallet is turned.

[Explanation of symbols]

 P2 pallet P1 Work exchange area P2 Processing area 5, 6 Splash guard 7 Fixed cover 7A Lower edge 8, 9 Shielding curtain 8A, 9A Cut 10 Machine tool 20 Pallet mounted cover device 21 Cover body 21A Lower edge 21B Upper edge E Clearance M Worker O Center of rotation

Claims (2)

(57) [Claims] 1. A central portion serving as a center of rotation of a two-sided pallet.
In addition, while the cover body that separates the front and rear is self-supported and fixed,
In a pallet-mounted cover device in which a fixed cover fixed to a main body of a machine tool is arranged directly above the cover body,
At least one side before and after the lower edge of the fixed cover
Hanging shielding curtain on the surface, the shielding curtain and to form a gap between the upper edge of the cover body, when the inverted turning of the two surfaces pallet, turning upper edge of the cover member is thrust through the shielding curtain A pallet-mounted cover device characterized in that: 2. A plurality of cuts are provided at a lower edge of the shielding curtain.
Including a large number of strip-shaped shielding curtains
The pallet-mounted cover device according to claim 1, wherein a piece is formed .