Composite processing machine

Abstract

To provide a composite working machine capable of surely recovering a jet flow in which a coolant and chips are mixed.SOLUTION: A combined machine 100 according to the present invention includes a tool spindle 106 configured to rotate a tool 128, a workpiece spindle 104 configured to grip and rotate a workpiece 102, a coolant supply device 108 configured to supply a coolant to a machining position where the workpiece is machined by the tool, a cylindrical louver cover 110 fixed at a position around the workpiece spindle, a plurality of blades 136 arranged on the louver cover in a circumferential direction with a gap 138 therebetween and inclined with respect to a radial direction of the workpiece spindle, and a scroll casing 112 fixed at a position around the louver cover and having a cross-sectional area gradually increasing in a direction in which the blades are inclined.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a multi-tasking machine that processes a workpiece with a tool. [Background technology]

[0002] In multi-tasking machines, chips are generated when a workpiece is machined with a tool. If these chips remain inside the multi-tasking machine, they may get caught between the workpiece and the chuck of the workpiece spindle when the workpiece is replaced, which can result in a decrease in machining accuracy. For this reason, multi-tasking machines require the removal of chips.

[0003] Patent Document 1 describes a cutter cover for a forced dust-exhaust sander (disc sander) that forcibly discharges cutting chips from within the cover via a dust exhaust hose. This cutter cover has an open bottom and is formed in a circular, roughly deep dish shape in plan view, and is deep enough to cover a rotary cutter or the like. A cutting chip outlet is formed on the periphery of the cutter cover, and a tubular connection for a dust exhaust hose is also provided. The dust exhaust hose is a hose that guides cutting chips that flow out from the outlet.

[0004] In this forced dust-exhaust sander, when the rotary cutter rotates, centrifugal force blows the cuttings outward, leading them to the periphery of the cutter cover and then out through the outlet into the connection part of the dust exhaust hose. The cuttings then travel from the connection part through the dust exhaust hose and are collected in, for example, a dust bag. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Registered Utility Model No. 3147720 Summary of the Invention [Problem to be solved by the invention]

[0006] Multi-tasking machines sometimes use coolant to perform wet machining when machining workpieces. In wet machining, coolant is sprayed toward the workpiece or tool being machined to cool them and remove chips, resulting in a jet of coolant and chips mixed together and scattering around.

[0007] The technology described in Patent Document 1 is a disc sander, and the rotating cutter extends to the vicinity of the outer periphery of the cutter cover, generating sufficient rotational force on the dust particles inside the cover. However, even if the cutter cover described in Patent Document 1 is applied to a multi-tasking machine, the jet (chips and coolant) flying from the work shaft is scattered almost radially (in the radial direction), making it difficult to give the jet directionality. As a result, the jet cannot be efficiently guided to the cutter cover's exhaust port, making it difficult to collect the jet.

[0008] In view of the above problems, the present invention has an object to provide a multi-tasking machine that can reliably collect a jet of coolant and chips mixed therein. [Means for solving the problem]

[0009] In order to solve the above problems, a typical configuration of a multi-tasking machine according to the present invention is characterized by comprising a tool spindle that rotates a tool, a work spindle that grips and rotates a workpiece, a coolant supply device that supplies coolant to a processing position where the workpiece is processed by the tool, a cylindrical louver cover fixed in a position where it wraps around the work spindle, a plurality of blades that are arranged circumferentially on the louver cover with gaps between them and are inclined relative to the radial direction of the work spindle, and a scroll casing fixed in a position where it wraps around the louver cover and whose cross-sectional area gradually increases in the direction in which the blades are inclined.

[0010] The upper edge of the louver cover is preferably formed with a fold that is inclined toward the work spindle. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a multi-tasking machine that can reliably collect a jet of coolant and chips mixed together. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating a multi-tasking machine according to an embodiment of the present invention; [Figure 2] FIG. 2 is an exploded view of the multi-tasking machine of FIG. [Figure 3] FIG. 3 is an enlarged view of the louver cover of FIG. 2. [Figure 4] 2A to 2C are diagrams illustrating the operation of the multi-tasking machine of FIG. 1 during wet machining. DETAILED DESCRIPTION OF THE INVENTION

[0013] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Dimensions, materials, and other specific values ​​shown in the embodiments are merely examples for facilitating understanding of the invention and, unless otherwise specified, do not limit the present invention. In this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant explanation, and elements not directly related to the present invention are not shown.

[0014] Fig. 1 is a diagram illustrating a multitasking machine 100 according to an embodiment of the present invention. Fig. 2 is an exploded view of the multitasking machine 100 of Fig. 1. As shown in Fig. 1, the multitasking machine 100 includes a work spindle 104 that grips a workpiece 102, which is an object to be machined, a tool spindle 106, a coolant supply device 108, a louver cover 110 (see Fig. 2), and a scroll casing 112.

[0015] Additionally, multitasking machine 100 has a column 116 mounted on a wall 114 on rails 118a and 118b so that the column 116 can move in the Z-axis direction (left and right direction). A rotary table 120 shown in Figure 1 is mounted on column 116 so that the rotary table 120 can move in the Y-axis direction (up and down direction). Note that tool spindle 106 and rotary table 120 are omitted from Figure 2.

[0016] The tool spindle 106 is attached to the rotary table 120, and the angle (posture) of the tool spindle 106 can be set by rotating the rotary table 120 in the R direction shown in Fig. 1. Therefore, the angle of the tool spindle 106 relative to the workpiece spindle 104 can be changed.

[0017] The work spindle 104 is movable in the X-axis direction (front-back direction) by rails 124a and 124b formed on the base 122. The work spindle 104 has a built-in motor, and can rotate the replaceably attached workpiece 102, for example, in the direction indicated by arrow A. The workpiece 102 is held in a chuck 126 of the work spindle 104.

[0018] 1 is replaceably attached to the tool spindle 106. The tool spindle 106 has a built-in motor, which can rotate the tool 128 to perform machining such as cutting. As an example, a skiving cutter is used as the tool 128, and the tool 128 is moved relative to the workpiece 102 to cut the outer peripheral surface of the workpiece 102, thereby machining a gear 130 (see FIG. 4).

[0019] The coolant supply device 108 supplies coolant to a machining position where the workpiece 102 is machined by the tool 128. This allows the multi-tasking machine 100 to perform wet machining using coolant when machining the workpiece 102.

[0020] The louver cover 110 is a cylindrical structure and is fixed in a position where it wraps around the workpiece spindle 104. The louver cover 110 has a structure similar to a centrifugal fan (sirocco fan), but does not rotate in the present invention. The scroll casing 112 is fixed in a position where it wraps around the louver cover 110. In other words, in the multitasking machine 100, the louver cover 110 is fixed between the workpiece spindle 104 and the scroll casing 112 in a position where it wraps around the workpiece spindle 104.

[0021] Fig. 3 is an enlarged view of the louver cover 110 of Fig. 2. The louver cover 110 is a cylindrical structure that includes an annular upper member 132 and a lower member 134, and a plurality of blades 136, which are assembled together. The blades 136 are arranged in a circumferential direction with gaps 138 between them. The upper and lower ends of the plurality of blades 136 are connected by the upper member 132 and the lower member 134, respectively.

[0022] The upper member 132 is formed with a fold 140. The fold 140 forms the upper edge of the louver cover 110 and is inclined toward the center of the cylindrical louver cover 110. As described above, the louver cover 110 is fixed in a position where it wraps around the workpiece spindle 104. Therefore, the fold 140 of the upper member 132 is inclined toward the workpiece spindle 104. This fold 140 prevents the jet of water from splashing above the louver cover 110 during wet machining.

[0023] Figure 4 is a diagram illustrating the operation of the multitasking machine 100 of Figure 1 during wet machining. The figure shows the internal structures of the louver cover 110 and the scroll casing 112, with the workpiece 102, workpiece spindle 104, louver cover 110, and scroll casing 112 viewed from above. The upper member 132 of the louver cover 110 is omitted from Figure 4.

[0024] As shown in the figure, the blades 136 of the louver cover 110 extend in a direction inclined relative to the radial direction of the workpiece spindle 104. The scroll casing 112 has an inner peripheral surface 142 that faces the louver cover 110. The inner peripheral surface 142 of the scroll casing 112 wraps around the louver cover 110 and opens toward the louver cover 110.

[0025] The scroll casing 112 has an inner circumferential surface 142 that forms a spiral shape when viewed from above so that the cross-sectional area when viewed from above gradually increases in the direction in which the blades 136 are inclined, as shown in Figure 4. The scroll casing 112 has a discharge port 144 at the position where the cross-sectional area when viewed from above is the largest (the end of the spiral).

[0026] In the multitasking machine 100, when the workpiece spindle 104 rotates while coolant is being discharged from the coolant supply device 108 toward the workpiece 102 and tool 128 (see FIG. 1) during wet machining, a jet of mixed chips and coolant is scattered radially from the workpiece spindle 104 as shown by arrow B. Although this jet is slightly angled due to the rotation of the workpiece spindle 104, it is scattered in an approximately radial direction of the workpiece spindle 104 and passes through the gap 138 between the blades 136 in the direction shown by arrow C.

[0027] Here, the blades 136 extend in a direction inclined relative to the radial direction of the workpiece spindle 104, so that the jet passing through the gap 138 between the blades 136 can be given a rotational direction, giving it the directionality shown by arrow C.

[0028] The directional jets then join together along the inner surface 142 of the scroll casing 112 as shown by arrow D to form a flow, which then converges at one point at the discharge port 144 of the scroll casing 112 as shown by arrow E.

[0029] Therefore, with the multitasking machine 100, the jet of coolant and chips mixed together can be reliably collected at the discharge port 144 of the scroll casing 112. If a collection duct is connected to the discharge port 144 of the scroll casing 112, the coolant and chips can be collected in the collection duct and then sent to the chip conveyor.

[0030] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that such modifications and alterations also fall within the technical scope of the present invention. [Industrial Applicability]

[0031] The present invention can be used as a multi-tasking machine that processes a workpiece with a tool. [Explanation of symbols]

[0032] 100... multitasking machine, 102... workpiece, 104... workpiece spindle, 106... tool spindle, 108... coolant supply device, 110... louver cover, 112... scroll casing, 114... wall, 116... column, 118a, 118b... rail, 120... rotary table, 122... base, 124a, 124b... rail, 126... chuck, 128... tool, 130... gear, 132... upper member, 134... lower member, 136... blade, 138... gap between blades, 140... fold of upper member, 142... inner surface of scroll casing, 144... discharge port of scroll casing

Claims

1. a tool spindle that rotates the tool; a work spindle that grips and rotates a workpiece; a coolant supply device that supplies coolant to a machining position where the workpiece is machined by the tool; a cylindrical louver cover fixed in a position where it wraps around the work spindle; a plurality of blades arranged in the circumferential direction of the louver cover with gaps therebetween and inclined with respect to the radial direction of the work spindle; a scroll casing fixed in a position where it wraps around the louver cover and whose cross-sectional area gradually increases in the direction in which the blades are inclined.

2. 2. The multi-tasking machine according to claim 1, wherein an upper edge of the louver cover is formed with a fold that is inclined toward the work spindle.

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