JP2011212789A - Dust collection case for machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collection case for a machine tool safely discharging dust even when a cutting tool moves in the vertical direction and in the entire circumferential direction with a simple constitution.SOLUTION: The dust collection case for a machine tool connected to a dust collector and discharging the dust generated in machining includes: an adapter part whose both ends form openings, which includes an air introducing port communicating with outside and a suction connection part connected to a suction hose of the dust collector, whose one end is detachably fixed to a spindle of the machine tool, and whose other end forms a cover; a first case part fixed onto a table of the machine tool so as to surround a workpiece of the machine tool; and a second case part which is connected to the first case part through an elastic member and on which the cover of the adapter part is mounted. The cover of the adapter part is configured so as to move on the second case accompanying movement of the spindle of the machine tool in the circumferential direction.

Description

  The present invention relates to a dust collection case for sucking dust generated when processing a processing target with a machine tool.

  When cutting ceramic products, the scraped ceramic powder is scattered, so workers wear protective equipment such as goggles and masks, and place spot-type dust collectors to prevent dust. Yes. In particular, when processing a material having a small specific gravity, such as graphite, and a small amount of shaving powder that is likely to scatter, it is necessary to take a larger dust countermeasure such as enclosing the entire work area.

  Therefore, a dust collector protector that can suck cutting dust of a workpiece with a simple configuration is disclosed (for example, Patent Document 1).

  This dust collecting protector includes a cover member that covers a portion to be processed and forms a space between the portion to be processed, an insertion hole that is formed in the cover member and into which the processing portion of the tool can be inserted, and a cover member. By providing a discharge hole that is drilled and connected to a suction device provided outside, dust generated in the space during processing can be sucked by the suction device and discharged from the discharge hole.

  In addition, the dust collector protector follows the vertical movement of the cutting tool (drill) by the spring provided in the insertion hole, so that the dust is discharged without being affected by the vertical movement of the cutting tool during processing. be able to.

Japanese Patent Laid-Open No. 7-80744

  When performing machining, the machining is usually performed while moving the cutting tool of the machine tool not only in the vertical direction but also in the horizontal direction (360 degrees) within the range on the workpiece. When the cutting tool is moved in the horizontal direction using the dust collecting protector, the cutting tool may come into contact with the insertion hole, and a safe processing operation cannot be performed.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a machine tool collection that can discharge dust safely even if the cutting tool moves in the horizontal direction with a simple configuration. To provide a dust case.

A dust collection case for a machine tool according to a first aspect of the present invention is connected to a dust collector and discharges dust generated during processing. Both ends form openings, and air communicates with the outside on the side surfaces. It has an introduction hole, one end of which is attached to and removed from the main spindle of the machine tool, and a suction connection part that connects the suction hose of the dust collector to the side of the machine tool so that it surrounds the workpiece of the machine tool. A first case portion fixed on the table and a second case portion having both ends connected to the adapter portion and the first case portion, respectively. The second case portion is provided with a bending portion that can follow the movement of the spindle of the machine tool.

  A dust collection case for a machine tool according to a second aspect of the present invention is connected to a dust collector and discharges dust generated during processing, and connects an air introduction hole communicating with the outside and a suction hose of the dust collector. A suction connection portion, one end of which is detachably fixed to the main spindle of the machine tool, and the other end is fixed on the table of the machine tool so as to surround the workpiece of the machine tool and the adapter portion forming the lid portion. The first case portion is connected to the first case via an elastic member, and includes a second case portion on which the lid portion of the adapter portion is placed. Then, the lid portion of the adapter portion moves on the second case following the horizontal movement of the spindle of the machine tool.

  According to the present invention, even if the spindle of the machine tool moves in the horizontal direction, the dust collecting case can follow the movement, and the cutting tool does not come into contact with the dust collecting case. And the discharge of dust.

It is a figure which shows an example of sectional drawing at the time of attaching the dust collection case for machine tools which concerns on the 1st Embodiment of this invention to a machine tool. It is a figure which shows an example of sectional drawing at the time of attaching the dust collection case for machine tools which concerns on the 2nd Embodiment of this invention to a machine tool. It is a figure which shows an example of the top view and sectional drawing of an adapter part of the dust collection case for machine tools which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of the upper side figure and sectional drawing of the 2nd case part of the dust collection case for machine tools which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of the top view and sectional drawing of the 1st case part of the dust collection case for machine tools which concern on the 2nd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. The following description shows preferred embodiments of the present invention, and the scope of the present invention is not limited to the following embodiments.

  A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an example of a cross-sectional view of a machine tool dust collecting case according to a first embodiment of the present invention attached to a machine tool. The dust collection case is used by being attached to a machine tool such as a machining center. As shown in FIG. 1, the machine tool is fixed to a spindle 50 connected to a drive unit (illustrated), a cutting tool 52 detachably fixed to a lower end side of the spindle 50 by a chuck 51, a table 60, and a vise 61 on the table 60 The workpiece 62 is provided. The object to be processed is fixed on the workpiece 60 via a jig (not shown). The machining target is machined into an arbitrary shape by driving the spindle 50 according to a preset program or manual operation.

The machine tool dust collecting case 1 includes an adapter part 10, a first case part 30, and a second case part 20. The adapter unit 10 is a cylindrical member that is open at both ends. In the present embodiment, the adapter portion 10 is made of acrylic resin. It should be noted that other materials such as resin, metal, and wood may be used as long as the material can be attached to and detached from the main shaft.

The upper end of the adapter unit 10 is attached to the main shaft 50 of the machine tool. In the present embodiment, the mounting screw 13 is assembled into two mounting screw holes 12 (one is not shown) provided on the side surface of the adapter unit 10 to fix the adapter unit 10 to the spindle 50 of the machine tool. . Thus, since the adapter part 10 can be attached or detached to the main spindle 50 of a machine tool, it can be selected and used according to a process target.
The number of the mounting screw holes 12 may be designed according to the main shaft diameter, or may be fixed using a ring-shaped chuck member.

One air introduction hole 11 communicating with the outside is formed on the side surface of the adapter unit 10. The air introduction hole 11 draws air into the dust collection case 1 for machine tools in accordance with suction from a dust collector (not shown) connected to a suction connection portion 31 provided on a side surface of the first case portion 30 described later. It is a hole for feeding. This is because, depending on the object to be processed (such as graphite), the generated cutting dust blows upward, so that the cutting dust can be reduced while suppressing the blowing of cutting dust by the air layer introduced from the air introduction hole 11 provided in the upper part. It is for discharging from the suction connection part 31 provided in the lower part.
In addition, about the number and arrangement | positioning of the air introduction hole 11, it designs arbitrarily by processing object.

The first case portion 30 is a cylindrical member having both ends opened. At one end thereof, a flange portion having an enlarged diameter in the outer peripheral direction is formed. In the present embodiment, the first case portion 30 is formed of an acrylic resin. Four fixing screws 33 (two are not shown) are combined in this collar part, and it fixes to the table 60 of a machine tool.

A suction connection portion 31 is formed on the side surface of the first case portion 30. In the present embodiment, the adapter portion 10 is formed so as to protrude from the side portion of the first case portion 30 in the lower direction facing the air introduction hole 11. A suction hose (pipe) 32 of an external dust collector is connected to the suction connection portion 31. By suction of the external dust collector, air is taken in from the air introduction hole 11 of the adapter unit 10 and is discharged from the suction connection unit 31 together with the cutting dust generated from the object to be processed.

The second case portion 20 is a member having both ends opened. In the present embodiment, the second case portion 20 is formed of urethane rubber. The first case portion 20 is disposed so as to surround the workpiece 62 of the machine tool (see FIG. 2). It should be noted that other rubber materials or resins may be used as long as they are deformable and do not shrink excessively by the suction of an external dust collector.

Further, a bending portion 21 is provided between both ends of the second case portion 20. In this embodiment, a recess 21 is provided near the center of the side. The bending portion 21 is for causing the main shaft 50 to follow the movement of the main shaft 50 while expanding and contracting and maintaining the internal space when the main shaft 50 moves in the horizontal or vertical direction within the workpiece 62 during processing.
In addition, about the shape of the hollow part 21, it is not limited to a present Example, The size and shape of the workpiece | work 62, such as what is called a bellows shape whose opening diameter expands in steps from the upper end of the 2nd case part 20, to a lower end. Accordingly, the first case portion 30 is arbitrarily designed in a range in which the first case portion 30 does not contact the workpiece 62 or the like.

The upper end of the second case part 20 is attached to the lower end side of the adapter part 10. In this embodiment, the ring-shaped chuck member 14 is used for fixing.
Since the inside of the dust collection case 1 for machine tools is kept at a negative pressure by suction by the dust collector, the fixing method is not limited as long as a certain level of confidentiality can be maintained.

The lower end of the second case portion 20 is connected to the upper end side of the first case portion 30. In this embodiment, the ring-shaped chuck member 34 is used for fixing.
As with the upper end side, the fixing method is not limited as long as a certain level of confidentiality can be maintained.

Next, the movement of the second case portion 20 when the cutting tool 52 moves on the work 62 with the movement of the spindle 50 during machining will be described. As shown in FIG. 1, when the cutting tool 52 moves from the center of the workpiece 62 to the workpiece end in the x direction (horizontal direction) in the drawing, the lower end of the second case portion 20 is connected to the first case portion 30. Therefore, with the lower end side fixed, the upper end side moves in the x direction as the main shaft 50 moves. Under the present circumstances, the hollow part 21 of the 2nd case part 20 can follow a motion to the main axis | shaft 50, maintaining internal space by deform | transforming like a broken line in a figure in a x direction.

Further, when the cutting tool 52 moves in the vertical direction, the hollow portion 21 of the second case portion 20 is elastically deformed in the vertical direction in accordance with the movement thereof, so that the vertical movement of the main shaft 50 can be followed. . Thereby, even if the spindle 50 of the machine tool moves in the workpiece 62 in an arbitrary direction, the inside of the dust collecting case 1 can be kept at a negative pressure, and the cutting dust can be discharged.

As described above, the dust collection case for a machine tool according to the first aspect of the present invention is connected to a dust collector and discharges dust generated during processing, both ends form openings, and externally on the side surfaces thereof. Has an air inlet hole that communicates with the adapter part, one end of which is attached to and detached from the spindle of the machine tool, and a suction connection part that connects the suction hose of the dust collector to the side of the adapter part so as to surround the workpiece of the machine tool A first case portion fixed on the table of the machine tool, and a second case portion having both ends connected to the adapter portion and the first case portion, respectively, and the second case portion includes a spindle of the machine tool. Since the bending part which can follow a movement is provided, a safe processing operation and dust discharge | emission can be reconciled, without a cutting tool contacting a dust collection case.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is an example of a cross-sectional view when a machine tool dust collecting case according to a second embodiment of the present invention is attached to a machine tool. As shown in FIG. 2, the machine tool dust collecting case 2 includes an adapter part 10, a first case part 30, and a second case part 20. 3 shows an example of the adapter unit 10, FIG. 4 shows an example of a top view and a sectional view of the second case unit 20, and FIG. 5 shows a first case unit 30. As shown in FIG.
In addition, in each figure, the same number is used about the same component as FIG.

As shown in FIG. 2, the first case portion 30 and the second case portion 20 are connected via an elastic member 40 to form a side portion of the dust collection case as a unit, and the adapter portion 10 is connected to the side portion. A certain space is formed inside by covering. A cutting tool 52, a workpiece 62, and the like of a machine tool are arranged in this space.

As shown in FIG. 3, the adapter unit 10 includes a cylindrical main shaft connection portion 100 that opens at both ends, and a circular lid portion 110 that is expanded in the outer peripheral direction from the lower end side of the main shaft connection portion. In the present embodiment, the adapter portion 10 is formed of an acrylic resin in consideration of the case where processing is performed while viewing the processing target.

The main shaft connecting portion 100 has two mounting screw holes 102 (one is not shown) on the upper side, and the fixing screw 104 is assembled into the mounting screw holes 102 so that the adapter portion 10 is connected to the main shaft of the machine tool. 50 (see FIG. 2). Thus, since the adapter part 10 can be attached or detached to the main spindle 50 of a machine tool, it can be selected and used according to a process target.

Further, the main shaft connecting portion 100 is formed with two air introduction holes 101 communicating with the outside on the lower side. The air introduction hole 101 is a hole for sending air into the dust collection case 1 for machine tools in accordance with suction from a dust collector (not shown) connected to a suction connection portion 111 described later. In this embodiment, the air introduction hole 101 is arranged above the position of the suction connection portion 111. This is because, depending on the object to be processed (graphite or the like), the generated cutting dust blows upward, so that the cutting air is discharged to the suction connection portion 111 while suppressing the blow-up of the cutting dust by the introduction air layer.
In addition, about the number and arrangement | positioning of the air introduction hole 101, it designs arbitrarily by processing object.

As shown in FIG. 3, the lid 110 is a circular plate member having an open center. The lid part 110 is placed on the second case part 20 (see FIG. 2). A circular suction connection portion 111 is formed on the lid portion 110. In this embodiment, the suction connection portion 111 is formed so as to protrude from the side portion of the adapter portion 10. A dust collection hose (pipe) 112 of an external dust collector is connected to the suction connection portion 111. By suction of the external dust collector, air is taken in from the air introduction hole 101 of the adapter unit 10 and is discharged from the suction connection unit 111 together with the cutting dust generated from the object to be processed.
In addition, what is necessary is just to design arbitrarily about the arrangement | positioning and shape of the suction connection part 111 according to the shape of the dust collection hose (pipe) 112 of an external dust collector.

Further, when the lid portion 110 is placed on the second case portion 20, a predetermined length (see FIG. 2) from the outer peripheral end of the second case portion 20 (the outer peripheral end of an elastic member upper end connecting portion 210 described later). B) The diameter is expanded. This length b is set to a length (b> a) larger than ½ (a in FIG. 2) of the external dimension (maximum value) of the workpiece 62 of the machine tool. Thereby, when the spindle 50 of the machine tool moves in the horizontal direction in the workpiece 62, the lid portion 100 of the adapter portion 10 drops off from the upper surface of the first case portion even if the cutting tool 53 moves to the outer peripheral end of the workpiece 62. Without following, it is possible to follow the horizontal movement of the spindle.

As shown in FIG. 4, the second case portion 20 includes a cylindrical sliding portion 200 having both ends opened, and an elastic member upper end connecting portion 210 that is expanded in the outer circumferential direction from the upper end side of the sliding portion 200. Composed. In this embodiment, an acrylic resin is used. The lid part 110 of the adapter part 10 is only placed on the upper end of the sliding part 200 of the second case part 20 (see FIG. 2). Thereby, even if the spindle 50 of the machine tool moves in the workpiece 62 in the horizontal direction, the adapter part 10 can move along the upper surface of the second case part 20.

Further, as described above, the length from the outer peripheral end of the second case portion 20 to the outer peripheral end of the lid portion of the adapter portion 10 when the adapter portion 10 is placed on the second case portion 20 (b in FIG. 2). Is larger than ½ (a in FIG. 2) of the outer dimension (maximum value) of the workpiece 60 of the machine tool. Therefore, when the spindle 50 of the machine tool moves in the horizontal direction in the workpiece 62, the blade 52 Even if it moves to the outer peripheral end of the workpiece 62, the lid part 110 of the adapter part 10 can follow the movement in the horizontal direction with respect to the main shaft without dropping from the upper surface of the second case part 20. Thereby, even if the main spindle 50 of the machine tool arbitrarily moves in the workpiece 62, the inside of the dust collecting case 1 can be kept at a negative pressure, and cutting dust can be discharged.

  As shown in FIG. 4, the elastic member upper end connection portion 210 is a circular plate member having an open central portion. An upper end connection hole 211 for connecting the elastic member 40 is provided on the lower surface of the elastic member upper end connection portion 210. In this embodiment, the diameter of the upper end connection hole 211 is made larger than the diameter of the elastic member 40, and both members are fixed by inserting the elastic member 40.

The elastic member 40 is a metal spring. Since the elastic member 40 is detachable from the elastic member upper end connection portion 210, the elastic member 40 can be replaced with an arbitrary elastic member 40 according to the vertical movement distance of the spindle 50 of the machine tool.
The elastic member 40 may be formed of a resin that can be elastically deformed.

  As shown in FIG. 5, the first case portion 30 includes a cylindrical elastic member lower end connecting portion 300 having both ends opened, and a sliding receiver projecting in the inner circumferential direction from the lower end side of the elastic member lower end connecting portion 300. It is comprised from the part 310 and the fixing | fixed part 320 which protruded in the outer peripheral direction from the lower end side of the elastic member lower end connection part 300. FIG. In the present embodiment, the first case portion 30 is formed of an acrylic resin.

A lower end connection hole 301 for connecting the elastic member 40 is provided on the upper surface of the elastic member lower end connection portion 300. In this embodiment, the diameter of the lower end connection hole 301 is made larger than the diameter of the elastic member 40, and both members are fixed by the elastic force of the elastic member 40 by inserting the elastic member 40. Thereby, the elastic member lower end connection part 300 and the elastic member upper end connection part 210 of the first case part 30 are connected via the elastic member 40.

The sliding receiving portion 310 is a columnar member having both ends opened. In this embodiment, the sliding receiving portion 310 is formed so as to project from the lower end side of the elastic member lower end connecting portion 300 in the inner circumferential direction.

The first case portion 30 is a spindle of a machine tool in a state where the second case portion 20 is connected to the first case portion 30 via the elastic member 40 and the adapter portion 10 is placed on the second case portion 20. When 50 is disposed at the upper limit position, the distance (c in FIG. 2) between the upper surface of the elastic member lower end connection portion 300 and the lower surface of the elastic member upper end connection portion 210 of the second case portion 20 is below the spindle 50 of the machine tool. It is made to become substantially equal to the moving distance in the direction (d in FIG. 2). Thereby, when the main shaft 50 of the machine tool moves downward, the elastic member 40 is contracted, and the side outer peripheral surface of the sliding portion 200 of the second case portion 20 is the elastic member lower end connecting portion of the first case portion 30. Since it moves along 300 side part outer peripheral surface, it can follow the movement of the perpendicular direction of the main axis | shaft 50. FIG.

On the contrary, when the main shaft 50 of the machine tool moves upward, the elastic member 40 extends, and the side outer peripheral surface of the sliding portion 200 of the second case portion 20 is the elastic member lower end connection portion of the first case portion 30. Since it moves along 300 side part outer peripheral surface, it can follow the movement of the perpendicular direction of the main axis | shaft 50. FIG.

The fixing portion 320 is a plate-like member whose diameter is increased in the outer peripheral direction from the lower end side of the elastic member lower end connecting portion 300. In this embodiment, the fixing portion 320 is formed so as to protrude from the lower end side of the elastic member lower end connection portion 300 in the outer peripheral direction. Four fixing screw holes 321 are formed in the fixing portion 320, and the first case portion 30 is fixed to the table 60 of the machine tool by combining the fixing screw holes 322.

In this embodiment, the elastic member 40 is composed of four metal springs, but a so-called bellows-shaped cylindrical member may be used as the elastic member 40. In addition, since the size of the workpiece 62 varies depending on the machine tool and the object to be processed, a configuration in which the diameter of the lid portion 100 of the adapter portion 10 can be slid and varied may be employed.

In the present embodiment, the dust collection case 2 is formed of acrylic resin, but may be formed of other resin, metal, wood, or the like. Moreover, although each component part of the adapter part 10, the 1st case part 30, and the 2nd case part 20 was integrally formed, you may connect and comprise using an adhesive agent etc. as an independent member.

As described above, the dust collection case for a machine tool according to the second aspect of the present invention has an air introduction hole that communicates with the outside, and a suction connection portion that connects a suction hose of the dust collector, and one end of the dust collection case of the machine tool. An adapter part that is detachably fixed to the main shaft and whose other end forms a lid part, a first case part that is fixed on a table of the machine tool so as to surround a work of the machine tool, and a first case and an elastic member A second case portion on which the lid portion of the adapter portion is placed, and the lid portion of the adapter portion moves on the second case as the spindle of the machine tool moves in the workpiece. Since it comprises, a safe processing operation and dust discharge | emission can be reconciled, without a cutting tool contacting a dust collection case.

DESCRIPTION OF SYMBOLS 1, 2 Dust collection case 10 Adapter part 11, 101 Air introduction hole 12, 102 Attachment screw hole 13, 103 Attachment screw 14, 34 Chuck member 20 2nd case part 21 Recessed part 30 1st case part 31, 111 Suction connection part
32, 112 Suction hose 33, 321 Fixing screw hole 40 Elastic member 50 Spindle 51 Chuck 52 Cutting tool 60 Table 61 Vise 62 Workpiece
DESCRIPTION OF SYMBOLS 100 Main shaft connection part 110 Cover part 200 Sliding part 210 Elastic member upper end connection part 211 Upper end connection hole 300 Elastic member lower end connection part 301 Lower end connection hole 310 Sliding receiving part 320 Fixing part 322 Fixing screw

Claims (2)

A dust collection case for machine tools that is connected to a dust collector and discharges dust generated during processing.
Both ends form an opening, the side surface has an air introduction hole communicating with the outside, and one end of the adapter part is detachably fixed to the spindle of the machine tool;
A first case portion having a suction connection portion for connecting a suction hose of the dust collector on a side surface and fixed on a table of the machine tool so as to surround a workpiece of the machine tool;
A second case part having both ends connected to the adapter part and the first case part, respectively;
The second case part is
A dust collecting case for a machine tool, comprising a bending portion capable of following the movement of the spindle of the machine tool. A dust collection case for machine tools that is connected to a dust collector and discharges dust generated during processing.
Both ends have openings, and have air introduction holes that communicate with the outside, and suction connection portions that connect the suction hoses of the dust collector, one end of which is detachably fixed to the spindle of the machine tool, and the other end An adapter part forming a lid part;
A first case portion fixed on a table of the machine tool so as to surround the workpiece of the machine tool;
The first case part is connected to the first case part via an elastic member, and the second case part on which the lid part of the adapter part is placed is provided.
The adapter part is
A dust collection case for a machine tool, wherein the lid portion moves on the second case portion following a movement in a peripheral direction of the spindle of the machine tool.

Images