Combined processing machine

Abstract

The present invention provides a combined processing machine capable of reliably recovering a jet flow in which a cooling liquid and cuttings are mixed. This combined processing machine (100) is provided with: a tool spindle (106) that rotates a tool (128); a workpiece spindle (104) that holds the workpiece (102) and rotates the workpiece (102); a cooling liquid supply device (108) that supplies cooling liquid to a machining position where the workpiece is machined by the tool; a cylindrical shutter cover (110) fixed at a position surrounding the workpiece main shaft; a plurality of blades (136) that are arranged on the shutter cover with gaps (138) therebetween in the circumferential direction and that are inclined with respect to the radial direction of the workpiece main shaft; and a volute (112) which is fixed at a position surrounding the shutter cover, and which has a cross-sectional area gradually increasing in the direction in which the blades are inclined.

Description

Technical Field

[0001] This invention relates to a composite machining machine that uses cutting tools to process workpieces. Background Technology

[0002] In multi-tool machining centers, chips are generated when machining a workpiece using cutting tools. If these chips remain inside the machining center, they may enter the chuck between the workpiece and the spindle during workpiece changes, leading to a decrease in machining accuracy. Therefore, chip removal is necessary in multi-tool machining centers.

[0003] Patent Document 1 describes a cutter cover for a forced dust removal type grinder (disc grinder) that forcibly discharges chips from inside the cover via a dust removal hose. This cutter cover is formed as a generally deep disc with an open lower surface and a circular shape when viewed from above, providing sufficient depth to cover rotating cutters and the like. Furthermore, a chip discharge outlet is formed on the circumference of the cutter cover, and the connection portion of the dust removal hose is tubular. The dust removal hose is a flexible hose that guides the chips flowing out from the discharge outlet.

[0004] In this forced dust removal type grinder, when the rotating cutter rotates, the chips are thrown outward due to centrifugal force. While being guided towards the periphery of the cutter cover, they are also released from the discharge port into the connection of the dust removal hose. Then, the chips are collected from the connection through the dust removal hose into, for example, a dust collection bag.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Utility Model Registration No. 3147720 Summary of the Invention

[0008] The problem the invention aims to solve

[0009] In multi-functional machining centers, there are situations where wet machining is performed while processing the workpiece using coolant. In wet machining, coolant is sprayed toward the workpiece and tool being machined to cool the workpiece and tool, or to remove chips. As a result, the jet of coolant mixed with chips disperses in all directions.

[0010] The technology described in Patent Document 1 is a disc grinder. Therefore, the cutting blade, as a rotating body, extends to the vicinity of the outer periphery of the cutting blade cover, thus generating sufficient rotational force on the dust within the cover. However, even if the cutting blade cover of Patent Document 1 were applied to a multi-tasking machine, the jet stream (chips and coolant) scattering from the workpiece axis would scatter in a generally radial pattern, making it difficult to directionalize the jet stream. Therefore, it is impossible to efficiently guide the jet stream to the outlet of the cutting blade cover, and it is difficult to recover the jet stream.

[0011] In view of the problems mentioned above, the present invention aims to provide a composite machining machine capable of reliably recovering the jet of coolant mixed with chips.

[0012] Solution for solving the problem

[0013] To solve the above problems, the representative structure of the composite machining machine of the present invention is characterized by comprising: a tool spindle that rotates a tool; a workpiece spindle that holds a workpiece and rotates it; a coolant supply device that supplies coolant to the machining position where the workpiece is machined by the tool; a cylindrical louvered cover fixed around the workpiece spindle; multiple blades arranged circumferentially spaced on the louvered cover and inclined relative to the radial direction of the workpiece spindle; and a volute fixed around the louvered cover, the cross-sectional area of ​​which gradually increases in the direction inclined toward the blades.

[0014] Preferably, a folded portion inclined toward the main axis of the workpiece is formed on the upper edge of the aforementioned louver cover.

[0015] The effects of the invention

[0016] According to the present invention, a composite machining center is provided that can reliably recover the jet stream that mixes coolant and chips. Attached Figure Description

[0017] Figure 1 This is a diagram illustrating a composite processing machine according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 An exploded view of a composite machining center.

[0019] Figure 3 It is an enlarged representation Figure 2 A picture of a Venetian blind cover.

[0020] Figure 4 This is an explanation Figure 1 A diagram showing the motion of a composite machining center during wet machining.

[0021] Explanation of reference numerals in the attached figures

[0022] 100. Composite machining machine; 102. Workpiece; 104. Workpiece spindle; 106. Tool spindle; 108. Coolant supply device; 110. Louver cover; 112. Volute; 114. Wall; 116. Column; 118a, 118b. Guide rail; 120. Rotary table; 122. Base; 124a, 124b. Guide rail; 126. Chuck; 128. Tool; 130. Gear; 132. Upper component; 134. Lower component; 136. Blade; 138. Gap between blades; 140. Fold-back section of upper component; 142. Inner circumferential surface of volute; 144. Nozzle of volute. Detailed Implementation

[0023] The following is a reference to the appendix. Figure 1 The preferred embodiments of the present invention will be described in detail below. The dimensions, materials, and other specific values ​​shown in these embodiments are merely illustrative examples for ease of understanding of the invention and are not intended to limit the invention, unless specifically stated otherwise. Furthermore, in this specification and the accompanying drawings, elements having substantially the same function or structure are omitted from repeated description by using the same reference numerals; additionally, elements not directly related to the present invention are omitted from the illustrations.

[0024] Figure 1 This is a diagram illustrating a composite processing machine 100 according to an embodiment of the present invention. Figure 2 yes Figure 1 An exploded view of a composite machining center 100. The composite machining center 100 possesses the following features: Figure 1 The workpiece spindle 104, tool spindle 106, coolant supply device 108, and louver cover 110 shown are used to hold the workpiece 102, which is the object of machining. Figure 2 ), and volute 112.

[0025] Additionally, the composite machining machine 100 has a column 116 installed on the wall 114, and the column 116 can move in the Z-axis direction (left-right direction) via guide rails 118a and 118b. The column 116 is equipped with... Figure 1 The rotary table 120 shown is capable of moving in the Y-axis direction (vertical direction). Furthermore, in... Figure 2 In the original text, the tool spindle 106 and the rotary table 120 are omitted.

[0026] A tool spindle 106 is mounted on a rotary table 120, and the rotary table 120 is used to... Figure 1 Rotating in the R direction as shown allows setting the angle (posture) of the tool spindle 106. Therefore, the angle of the tool spindle 106 relative to the workpiece spindle 104 can be changed.

[0027] The workpiece spindle 104 can move in the X-axis direction (front-back direction) using guide rails 124a and 124b formed on the base 122. The workpiece spindle 104 has a built-in motor that allows the replaceably mounted workpiece 102 to rotate in, for example, the direction indicated by arrow A. Furthermore, the workpiece 102 is held by a chuck 126 of the workpiece spindle 104.

[0028] The tool spindle 106 is replaceably mounted with Figure 1 The tool 128 is shown. The tool spindle 106 has a built-in motor that enables the tool 128 to rotate for cutting and other machining operations. Here, as an example, gear turning is performed using a gear-turning cutter, which is the tool 128. This causes the tool 128 to move relative to the workpiece 102, cutting the outer peripheral surface of the workpiece 102 to machine the gear 130 (see reference). Figure 4 ).

[0029] The coolant supply device 108 supplies coolant to the machining position where the workpiece 102 is machined using the cutting tool 128. As a result, the composite machining machine 100 is able to perform wet machining using coolant when machining the workpiece 102.

[0030] The louver cover 110 is a cylindrical structure fixed around the workpiece spindle 104. The louver cover 110 has a similar structure to a centrifugal fan (Sirocco fan), but it does not rotate in this invention. The volute 112 is fixed around the louver cover 110. In other words, in the composite machining machine 100, the louver cover 110 is fixed between the workpiece spindle 104 and the volute 112, and around the workpiece spindle 104.

[0031] Figure 3 It is an enlarged representation Figure 2 A diagram of a venetian blind 110. The venetian blind 110 is a cylindrical structure comprising an annular upper member 132 and a lower member 134, and multiple blades 136, which are assembled together. Multiple blades 136 are arranged circumferentially, separated by gaps 138. The upper and lower parts of the multiple blades 136 are connected by the upper member 132 and the lower member 134, respectively.

[0032] A fold-back portion 140 is formed on the upper member 132. The fold-back portion 140 forms the upper edge of the louver cover 110 and is inclined toward the center of the cylindrical louver cover 110. The louver cover 110 is fixed around the workpiece spindle 104 as described above. Therefore, the fold-back portion 140 of the upper member 132 is inclined toward the workpiece spindle 104. This fold-back portion 140 can be used to prevent the jet from scattering upwards toward the louver cover 110 during wet machining.

[0033] Figure 4 This is an explanation Figure 1A diagram illustrating the operation of the composite machining center 100 during the wet machining process. The diagram shows the internal structure of the workpiece 102, workpiece spindle 104, louver cover 110, and volute housing 112 as viewed from above. Figure 4 In the middle, the upper component 132 of the louver cover 110 is omitted.

[0034] The blades 136 of the louver cover 110 extend in a direction inclined relative to the radial direction of the workpiece spindle 104, as shown in the figure. The volute 112 has an inner circumferential surface 142 opposite to the louver cover 110. The inner circumferential surface 142 of the volute 112 surrounds the louver cover 110 and opens toward the louver cover 110.

[0035] In addition, the cross-sectional area of ​​the volute 112 as viewed from above is as follows: Figure 4 The way the slope towards the blade 136 gradually increases causes the inner circumferential surface 142 to form a vortex shape when viewed from above. Furthermore, the volute 112 has an exhaust port 144 at the position with the largest cross-sectional area when viewed from above (the end of the vortex).

[0036] In the composite machining machine 100, during wet machining, if the coolant supply device 108 is directed towards the workpiece 102 and the cutting tool 128 (see reference) Figure 1 When the workpiece spindle 104 rotates while the coolant is being sprayed out, the jet of chips mixed with coolant radiates out from the workpiece spindle 104 as shown by arrow B. Although the jet has a slight angle due to the rotation of the workpiece spindle 104, it scatters in the approximate radial direction of the workpiece spindle 104 and passes through the gap 138 between the blades 136 in the direction shown by arrow C.

[0037] 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 and the jet has the directionality shown by arrow C.

[0038] Then, the directional jets flow along the inner circumferential surface 142 of the volute 112 as shown by arrow D, and converge at the nozzle 144 of the volute 112 as shown by arrow E.

[0039] Therefore, according to the composite machining center 100, the jet of coolant and chips mixed together can be collected at the nozzle 144 of the volute 112 for reliable recovery. Furthermore, if a recovery pipe is connected to the nozzle 144 of the volute 112, the coolant and chips can also be recovered in the recovery pipe and further conveyed to the chip conveyor.

[0040] The above is with reference to the appendix. Figure 1The preferred embodiments of the present invention have been described, but it can be said that the present invention is not limited to these examples. Various modifications or alterations will be apparent to those skilled in the art within the scope of the claims, and it should be understood that these are also within the protection scope of the present invention.

[0041] Industrial availability

[0042] This invention can be used as a composite machining machine that uses cutting tools to process workpieces.

Claims

1. A composite processing machine, characterized in that, The composite processing machine has the following features: The tool spindle, which rotates the tool; A workpiece spindle that holds the workpiece and causes it to rotate; A coolant supply device that supplies coolant to the machining position where the workpiece is machined by the cutting tool; A cylindrical louvered cover, fixed around the main shaft of the workpiece; Multiple blades, spaced apart from each other in the circumferential direction, are arranged on the louver cover and are inclined relative to the radial direction of the main axis of the workpiece. as well as The volute, which is fixed around the louver cover, has a cross-sectional area that gradually increases in the direction of inclination toward the blades.

2. The composite processing machine according to claim 1, characterized in that, A folded portion inclined toward the main axis of the workpiece is formed at the upper edge of the louver cover.

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