Composite processing machine

Abstract

Provided is a combined processing machine provided with a separation shutter for dividing a space for a plurality of operating units, the combined processing machine having a bed provided with a front-side inclined surface inclined so as to be lower on a front side, a plurality of operating units arranged in a machine body width direction of the bed, a separation shutter that is disposed between the plurality of operating units and moves forward and back over the bed, and an extension shutter that is rotatably attached to the separation shutter and opens below the separation shutter as the separation shutter advances.

Description

[Technical Field]

[0001] The present invention relates to a multi-tasking machine equipped with a separation shutter for separating a space for a plurality of operations performed by a plurality of devices. [Background technology]

[0002] Machine tools employ slant-type beds with a sloped front to save space and achieve compactness. Patent Document 1 below also discloses a machine tool with such a bed. This machine tool is a multi-tasking machine with opposing left and right headstocks arranged on the same axis, each headstock equipped with a chuck. The left headstock is fixed to the bed, while the right headstock is movable on the same axis. The bed is slant-type, with the front lower, and a composite tool rest is configured to move horizontally toward the rear of the machine body. Turret tool rests, movable in the machining axis direction, are located below the front of the left and right headstocks. A workpiece held by the spindle is then machined using tools on the turrets and composite tool rests. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. WO01 / 030522 Summary of the Invention [Problem to be solved by the invention]

[0004] As mentioned above, in a multi-tasking machine, multiple machining operations are performed on workpieces held by left and right headstocks using tools on a turret or composite tool post. Therefore, if machining operations in multiple work sections are performed in a single machining chamber, chips and coolant scattered from one headstock may adhere to the chuck, workpiece, or tool on the turret of the other headstock, potentially reducing machining accuracy. Therefore, it is preferable for machining operations in each work section of a multi-tasking machine to be performed in separate, partitioned spaces. However, the above-mentioned conventional example only had a shutter separating the automatic tool changer (ATC) and the composite tool post. Therefore, a shutter is needed to create separate machining chambers that separate the left and right sides of the machine widthwise. However, with a slanted bed whose front side is inclined, it is difficult to block the inclined portion.

[0005] SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a multi-tasking machine equipped with a separation shutter for dividing the space into a plurality of working sections. [Means for solving the problem]

[0006] The multi-tasking machine according to one aspect of the present invention includes a bed having a front inclined surface that is inclined downward toward the front, a plurality of working units arranged in the width direction of the bed, a separation shutter arranged between the plurality of working units and moving back and forth on the bed, and a separation shutter rotatably attached to the separation shutter and deployed below the separation shutter as the separation shutter advances. , and closes the gap that occurs between the front inclined surface of the bed and the separation shutter. and an extended shutter. [Effects of the Invention]

[0007] According to the above configuration, the extension shutter housed in the separation shutter unfolds, allowing for simple linear movement of the separation shutter while increasing the area blocking off the interior of the machine in the separation position. Therefore, even in the case of a bed with a front inclined surface, the extension shutter can also block off the inclined portion that cannot be blocked by the separation shutter alone. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a main structure of an embodiment of a multi-tasking machine; [Figure 2] 1 is a side view showing a main structure of an embodiment of a multi-tasking machine; [Figure 3] FIG. 2 is a perspective view showing a separation shutter and an extension shutter. [Figure 4] FIG. 2 is a side view showing the separation shutter and the extension shutter. [Figure 5] 4 is a cross-sectional view taken along the arrow MM in FIG. 3, showing the separation shutter and the extension shutter. [Figure 6] 10A and 10B are diagrams showing state changes of an extended shutter. [Figure 7] FIG. 2 is a simplified front view showing the inside of the multi-tasking machine partitioned by a separation shutter and an extension shutter. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of a multitasking machine according to the present invention will be described below with reference to the drawings. The multitasking machine of this embodiment is a machine tool that combines the functions of both an NC lathe and a machining center. FIGS. 1 and 2 are a perspective view and a side view showing the main structure of the multitasking machine of this embodiment. The multitasking machine 1 is a two-axis opposed lathe in which a first workpiece spindle unit 3 and a second workpiece spindle unit 4 that impart rotation to a gripped workpiece W, and a first turret unit 5 and a second turret unit 6 that have multiple tools T for machining the workpiece W, are arranged symmetrically on the left and right. In addition, the multitasking machine 1 is provided with a tool spindle unit 2 in the center of the machine body for performing machining that is difficult to perform on a lathe.

[0010] The first and second work spindle devices 3, 4 (hereinafter, when describing the configuration common to both devices, they will be referred to as work spindle devices 3, 4) have the same structure, with a spindle rotatably incorporated into a cylindrical headstock 22, to which is attached a chuck mechanism 21 that grips the workpiece W to be machined. The rotation of a spindle motor 23 is transmitted to the spindle, so that the workpiece W gripped by the chuck mechanism 21 can be phased during machining and rotated at a predetermined speed.

[0011] The workpiece spindle devices 3, 4 are configured such that a headstock 22 and a spindle motor 23 are mounted on a spindle slide 24, and the spindle slide 24 moves on a bed 7. In particular, the slanted bed 7 is formed with a front inclined surface 11 that is inclined so that it is lower toward the front, and the spindle slide 24 is mounted on this front inclined surface. In this embodiment, the Z axis is the direction widthwise of the machine body and parallel to the center line of the horizontal spindle, and two guide rails 25 are fixed to the front inclined surface 11 along the Z axis direction. The workpiece spindle devices 3, 4 are configured such that the spindle slide 24 attached to the guide rails 25 moves in the Z axis direction by a Z axis servo motor and a ball screw mechanism.

[0012] Next, the first turret device 5 and the second turret device 6 (hereinafter, when describing both devices together, they will be referred to as turret devices 5 and 6) select a suitable tool from a plurality of tools T (turret tools) by rotating and indexing, and perform predetermined processing such as cutting on the workpiece W. The turret devices 5 and 6 are configured such that a plurality of tools T are attached to a disk-shaped turret 27 at equal intervals in the circumferential direction, and any tool T can be positioned at a processing position on the circumference by controlling the rotation of an indexing servo motor 28.

[0013] The turret devices 5 and 6 are configured to move a turret 27 in the YL-axis and XL-axis directions, which are angled 45 degrees with respect to the horizontal and vertical directions, on an XY plane perpendicular to the Z-axis in order to move the tool T to the machining position. A YL-axis guide rail 31 is fixed to the rear inclined surface 12 of the bed 7, and a substantially triangular base slide 32 is attached thereto so as to be able to slide thereon. The turret 27 is attached to an XL-axis guide rail 33 provided on the base slide 32 so as to be able to slide thereon. The base slide 32 and the turret 27 are each configured to be able to move back and forth in the YL-axis or XL-axis direction by a servo motor and a ball screw mechanism.

[0014] Next, the tool spindle device 2 has a spindle servo motor and a tool spindle built into the spindle head 35, and various tools T (spindle head tools) housed in an automatic tool changer (not shown) are replaced with a tool mounting part provided at the bottom end of the spindle head 35. The spindle head 35 is attached to a spindle slide 36 so as to rotate about a rotation axis parallel to the Y axis, and is configured so that the rotation of the motor is transmitted via a rotation transmission mechanism.

[0015] The tool spindle device 2 is configured to move the spindle head 35 by having a base slide 37 that slides on the bed 7 along a horizontal guide rail in the Y-axis direction, and a spindle slide 36 that is slidably mounted on a vertical rail in the X-axis direction provided in front of the base slide 37. The base slide 37 and the spindle slide 36 are each configured to be reciprocable in the Y-axis direction or the X-axis direction by a servo motor and a ball screw mechanism.

[0016] The multitasking machine 1 is further provided with an automatic tool changer that changes tools for the tool spindle unit 2, and an automatic workpiece transport device that transports the workpiece W to the first workpiece spindle unit 3 and the second workpiece spindle unit 4. The multitasking machine 1 is entirely covered with a machine body cover, and the space inside the machine is partitioned by two separation shutters 15 or the like, as shown in Fig. 7. Fig. 7 is a simplified front view showing the inside of the multitasking machine 1 partitioned by the separation shutters 15 or the like.

[0017] The interior of the multitasking machine 1 forms a large space that allows for the relative operation of each device in the Z-axis direction, and can also be divided into spaces corresponding to three different work sections. The spaces corresponding to the three work sections in the multitasking machine 1 are a first machining chamber 10A that machines the workpiece W held by the first workpiece spindle device 3, a second machining chamber 10B that machines the workpiece W held by the second workpiece spindle device 4, and a tool spindle space 10C where tools in the tool spindle device 2 are changed.

[0018] The two separation shutters 15 are provided on both sides of the tool spindle unit 2, at two locations between the first turret unit 5 and the second turret unit 6, as shown by the dashed dotted lines in Fig. 1. Fig. 3 is a perspective view showing the separation shutter 15 and other components, and Fig. 4 is a side view showing the separation shutter 15 and other components. Fig. 5 is a cross-sectional view taken along the line MM in Fig. 3, showing the separation shutter 15 and other components. Note that the two separation shutters 15, which are arranged symmetrically on the left and right, have the same configuration, and therefore only one of them will be shown and described.

[0019] A shutter frame 51 is fixed to the bed 7 of the multi-tasking machine 1, and the separation shutter 15 is attached to the shutter frame 51 so as to be movable in the fore-and-aft direction of the machine body. A guide frame 52 extending horizontally in the Y-axis direction in the fore-and-aft direction of the machine body is fixed to the upper part of the U-shaped shutter frame 51, and two guide rollers 53 are attached to the upper side of the separation shutter 15 and are placed inside the guide frame 52 so as to be able to roll.

[0020] Meanwhile, a support bracket 54 is fixed to the horizontal plane portion of the bed 7 so as to be positioned within the frame of the shutter frame 51, and two guide members 55 are fixed to a support plate 61 that stands upright in the vertical direction at two locations in the Y-axis direction. Meanwhile, a guide rail 56 is fixed to the separating shutter 15 side, and the guide rail 56 is fitted into the two guide members 55 so as to be able to slide against them. Therefore, the separating shutter 15 is supported by the guide rail 56 that slides on the lower side and the guide roller 53 that rolls on the upper side, and is able to move horizontally in the Y-axis direction while maintaining its upright position.

[0021] 5, the separation shutter 15 has a hollow box shape, and a guide rail 56 is fixed to its inner surface. Below the separation shutter 15 where the guide rail 56 is located, a storage section 151 that extends in the width direction is formed over the entire length in the longitudinal direction (Y-axis direction), and a support plate 61 enters from below through a slit cut in the bottom surface. In addition, an air cylinder 58 that is attached so as to be able to expand and contract in the Y-axis direction is housed within the storage section 151 in order to move the separation shutter 15.

[0022] A support bracket 63 extending toward the rear of the machine body is fixed horizontally to the support plate 61. The head side end of the air cylinder 58 is fixed to the rear side end of the support bracket 63, and the rod side end is fixed to a support bracket 64 joined to the support plate 61. The air cylinder 58 has a piston rod 581 that extends and retracts horizontally, and the tip end of the piston rod 581 is connected to a connecting bracket 59 fixed inside the separating shutter 15.

[0023] The separation shutter 15 moves in the fore-and-aft direction of the machine body by the extension and retraction of the air cylinder 58, and can be switched between a retracted position shown by a solid line in Fig. 3 and a separation position shown by a dashed line (solid line in Fig. 4). When the separation shutter 15 is in the separation position shown by the dashed line in Fig. 3, the extension shutter 16 extends so as to protrude from below. In other words, the separation shutter 15 and the extension shutter 16 are configured to enlarge the area that blocks off the inside of the machine. This is because the bed 7 of the multitasking machine 1 is slanted, and if the rectangular separation shutter 15 alone were to be in the separation position, a gap would be created between the shutter and the front inclined surface 11 that overlaps it.

[0024] If a gap occurs between the first machining chamber 10A, the second machining chamber 10B, and the tool spindle space 10C and the adjacent spaces are not sufficiently isolated, the entire multi-tasking machine 1 must be stopped in order for the operator to perform work inside the machine. Therefore, in this embodiment, the gap is closed by the extension shutter 16. The extension shutter 16 is formed in a shape that matches the shape of the telescopic cover 41 that covers the guide rail 25 of the front inclined surface 11 and that can rotate within the separation shutter 15.

[0025] The extension shutter 16 is pivotally supported at its end on a horizontally oriented pivot shaft fixed to the separation shutter 15 side, and is configured to move integrally with the separation shutter 15 while pivoting. A guide rail 66 parallel to the Y axis is joined to the support plate 62 of the support bracket 54, and a roller 65 attached to the pivot shaft of the extension shutter 16 is fitted into the guide rail 66 so as to be able to roll. The U-shaped guide rail 66 is fixed horizontally so as to open toward the pivot shaft, and the roller 65 is fitted into the guide rail 66 from the opening side and is configured to roll on its underside. A guide plate 67 is also provided on the underside of the guide rail 66, against which a portion of the extension shutter 16 slidably contacts. When the extension shutter 16 moves integrally with the separation shutter 15, its state is switched according to changes in the location where it contacts the guide plate 67 (see FIG. 4).

[0026] 6 is a diagram showing the state changes of the extended shutter 16. The guide plate 67 that guides the extended shutter 16 has a curved portion 671 bent by approximately 90 degrees at its tip. The extended shutter 16 is made of a plate material of a predetermined thickness, and the portion that makes sliding contact with the guide plate 67 passes through the curved portion 671, causing the extended shutter 16 to rotate and expand from the stored state A to the intermediate state B (B1, B2 in FIG. 4) and then to the closed state C, or the state can change in the opposite direction.

[0027] The extension shutter 16 has a blocking portion that widens widely from a narrow rectangular portion on which the roller 65 is journaled. The outer diameter shape of the extension shutter 16 has a curved portion 72 that bends at approximately 90 degrees from a straight portion 71 of the rectangular portion to the blocking portion, and continues via a straight acting portion 73 to a corner portion 74 that slides against the guide rail 66. Furthermore, a mating portion 75 that corresponds to the shape of the telescopic cover 41 is formed next to the corner portion 74, and an outer periphery portion 76 that is shaped so as not to increase the distance from the center position when the extension shutter 16 rotates, and a straight portion 77 that returns from the outer periphery portion 76 to the rectangular portion are connected.

[0028] Next, the functions of the separation shutter 15 and the extension shutter 16 will be described. The separation shutter 15 is in the retracted position shown by the solid line in Fig. 3, and the extension shutter 16 is stored within it in a storage state A. When the separation shutter 15 is in the retracted position, inside the multitasking machine 1, it is possible for the tool spindle unit 2 to process the workpiece W held by the first workpiece spindle unit 3 or the second workpiece spindle unit 4, and it is also possible to transfer the workpiece W between the first workpiece spindle unit 3 and the second workpiece spindle unit 4.

[0029] On the other hand, when the air cylinder 58 is extended, the guide rail 56 of the separation shutter 15 slides against the guide member 55, and the upper guide roller 53 rolls within the guide frame 52. The separation shutter 15 slides toward the front of the machine body along the Y axis, moving from the retracted position to the separation position to separate the interior of the machine. That is, within the machine of the multitasking machine 1, a first machining chamber 10A, a second machining chamber 10B, and a tool spindle space 10C are formed, with adjacent working sections isolated from each other.

[0030] As the separation shutter 15 moves toward the front of the machine body, the corner portion 74 of the extension shutter 16 slides against the guide plate 67, and when it passes the curved portion 671, it begins to rotate and changes from the stored state A in FIG. 6 to the intermediate state B (B1, B2 in FIG. 4). The extension shutter 16 gradually changes its inclination as the action portion 73 and curved portion 72 slide against the curved portion 671, and then the straight portion 71 moves along the straight line of the guide plate 67, thereby reaching the blocked state C. Therefore, as shown in FIG. 4, the separation shutter 15 and the extension shutter 16 separate the interior of the machine, and the adjacent first machining chamber 10A and tool spindle space 10C, and the adjacent second machining chamber 10B and tool spindle space 10C, are each in a separated state in which they are substantially blocked from each other.

[0031] Next, when the separation shutter 15 is returned from the separation position to the retracted position, the air cylinder 58 contracts, and the separation shutter 15 is pulled by the piston rod 581 and slides toward the rear of the machine body. At that time, the extended shutter 16 is also pulled toward the rear of the machine body, and the curved portion 72 comes into sliding contact with the curved portion 671, from which point the extension shutter 16 begins to rotate about the rotation axis of the roller 65. That is, the extended shutter 16 is returned to the storage state A by the curved portion 72 and then the action portion 73 sliding against the curved portion 671, and changes from the blocking state C to the intermediate state B. Then, the extended shutter 16 rotates so that the corner portion 74 comes into sliding contact with the flat portion of the guide plate 67, and is returned to the storage state A and stored within the separation shutter 15.

[0032] Therefore, according to the multi-tasking machine 1 of this embodiment, by unfolding the extension shutter 16 housed in the separation shutter 15, it is possible to simply move the horizontal separation shutter 15 while increasing the area that blocks off the inside of the machine when in the separation position. In particular, even if the bed 7 is a slanted type with the front inclined surface 11 formed thereon, adjacent beds can be separated by the extension shutter 16. Therefore, for example, even when machining is being performed on the second workpiece spindle unit 4 side, it is possible to stop the first workpiece spindle unit 3 and first turret unit 5 in the first machining chamber 10A and perform tool change work on the turret 27.

[0033] Furthermore, the extension shutter 16 rotates according to its shape (curved portion 72, acting portion 73) that slides against the curved portion 671 of the guide plate 67, and therefore, with a simple configuration, it is possible to change state according to the moving position that moves integrally with the separation shutter 15 even within the narrow separation shutter 15. The multi-tasking machine 1 of this embodiment is separated into the first machining chamber 10A, the second machining chamber 10B, and the tool spindle space 10C by the separation shutter 15 and the unfolded extension shutter 16, and the inside of the machine is made into a single space, allowing work to be performed between separate devices.

[0034] Although one embodiment of the present invention has been described, the present invention is not limited to this embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, the multi-tasking machine is not limited to the configuration of the above-described embodiment, and may be a two-spindle opposed lathe excluding the tool spindle unit 2, and may have only one set of the separation shutter 15 and the extension shutter 16. [Explanation of symbols]

[0035] REFERENCE SIGNS LIST 1...Multi-task machine 2...Tool spindle device 3...First workpiece spindle device 4...Second workpiece spindle device 5...First turret device 6...Second turret device 7...Bed 8...Automatic tool changer 9...Automatic workpiece transport device 10A...First machining chamber 10B...Second machining chamber 10C...Tool spindle space 11...Front inclined surface 15...Separation shutter 41...Telescopic cover 16...Extended shutter 51...Shutter frame 58...Air cylinder 67...Guide plate

Claims

1. a bed having a front inclined surface that is inclined so as to be lower toward the front; A plurality of working units arranged in the width direction of the bed body; a separation shutter disposed between the plurality of working units and moving back and forth on the bed; an extension shutter that is rotatably attached to the separation shutter, that expands below the separation shutter as the separation shutter advances, and that closes a gap that occurs between the front inclined surface of the bed and the separation shutter; A multi-tasking machine having the above.

2. a bed having a front inclined surface that is inclined so as to be lower toward the front; a first work spindle device and a second work spindle device, each of which is disposed on the front inclined surface and has a headstock for holding a spindle rotatably about its axis; a first turret device and a second turret device, each of which is disposed rearward of the first workpiece spindle device or the second workpiece spindle device and is provided with a turret to which a plurality of turret tools can be attached; a tool spindle device disposed between the first turret device and the second turret device; two separation shutters disposed between the tool spindle unit and the first turret unit and between the tool spindle unit and the second turret unit, respectively, and moving back and forth on the bed; an extension shutter that is rotatably attached to the separation shutter, that expands below the separation shutter as the separation shutter advances, and that closes a gap that occurs between the front inclined surface of the bed and the separation shutter; A multi-tasking machine having the above.

3. 3. The multi-tasking machine according to claim 1, wherein the separation shutter is movably supported by a guide and moves linearly by the expansion and contraction of an air cylinder.

4. 3. The multi-tasking machine according to claim 1, wherein the extension shutter is pivotally supported by the separation shutter and moves while sliding on a guide plate having a curved tip portion, thereby changing the extension state.

5. 5. The multi-tasking machine according to claim 4, wherein the extension shutter has a roller mounted on a rotating shaft supported by the separation shutter, the roller rolling on a guide rail parallel to the movement direction of the separation shutter, and the guide plate is mounted on the guide rail.

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