JP4723895B2 - Turret device - Google Patents

Description

  The present invention relates to a turret device provided with a turret tool post having a plurality of tools on the circumference at the tip of a turret shaft.

  Generally, in a turret lathe having a turret device provided with a turret tool post having a plurality of tools on the circumference at the tip of the turret shaft capable of indexing rotation, each turret tool on the turret tool post is indexed by the rotation index of the turret shaft. The tool is sequentially positioned at the machining position corresponding to the workpiece held by the chuck of the headstock, and the outer periphery and end face of the workpiece are moved by each tool on the turret tool post by the relative movement of the turret device with respect to the headstock in the two-dimensional direction. It is designed to turn. A cutting fluid supply nozzle is provided corresponding to each tool on the turret tool post so that the cutting fluid can be supplied to the cutting edge (work processing location) of the tool when a workpiece is processed by the tool.

  Also, in this type of turret lathe, there is also implemented a type in which a work holding device for delivering a work to the chuck is provided on the turret tool post, and in this case, the work holding device is attached to the turret tool post. Is equipped with a cylinder for opening and closing the holding claw, and a pipe for supplying a working fluid to the cylinder, and further an electric signal for transmitting a sensor signal for detecting attachment of the workpiece to the chuck by the cylinder. It is necessary to provide wiring. Thus, in the turret lathe, it is necessary to incorporate a plurality of pipes for supplying cutting fluid, hydraulic oil, and the like to the turret tool post side and wiring for transmitting electrical signals.

In a conventional turret lathe, for example, as described in Patent Document 1, a plurality of pipes for supplying cutting fluid, working fluid, and the like to the turret tool post side to a turret shaft and a plurality of passages for passing wiring are directly provided. A cutting fluid, a working fluid, and the like are supplied from the fixed portion to the turret tool post side through a rotating fluid valve formed at the rear of the turret shaft.
Japanese Patent Laying-Open No. 2004-25403 (paragraphs 0020 and 0023, FIG. 1)

  For this reason, in the turret lathe described in Patent Document 1 described above, when the rotating sliding portion between the rotating fluid valve and the turret shaft is worn or damaged, the turret shaft is removed from the tool post body and replaced. Therefore, a large-scale work is required for replacement of wear-damaged parts. Also, when dealing with changes in the type and quantity of piping and wiring accompanying changes in specifications, etc., it is necessary to replace the turret shaft as a whole.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a turret device that can eliminate turret shaft attachment / detachment during maintenance.

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a slide main body is provided so as to be relatively movable in the X-axis direction and the Z-axis direction with respect to the headstock supporting the chuck, and a turret shaft is provided on the slide main body. A turret tool post having a plurality of tools on the circumference is provided at the tip of the turret shaft so that the tool can be rotated and indexed, and the tool on the turret tool post is rotated and indexed to the chuck. In the turret device that is sequentially indexed to the corresponding machining positions, a hollow hole is provided in the center of the turret shaft, and a cutting liquid supply is provided to supply the cutting liquid to the tool provided on the turret tool post in the hollow hole. A piping unit provided with a passage for passage, the piping unit is fixed to the slide body, a rotary fluid valve is disposed at the tip of the piping unit passing through the turret shaft, and the piping unit Together through the rotary fluid valve from preparative so as to supply the cutting fluid into the turret side, the turret tool rest, the work holding unit having a holding claw for holding the workpiece supplied to the chuck An operating cylinder for operating the holding claw and a sensor for detecting movement of the work holding unit, the turret tool post is provided with fluid passages respectively connected to both chambers of the operating cylinder, and the piping unit has the above-mentioned A working fluid supply / discharge passage for supplying / discharging the working fluid to / from the working cylinder is provided, the working fluid supply / discharge passage and the fluid passage are connected via the rotary fluid valve, and the sensor is connected to the piping unit. A wiring for extracting a signal is attached .

According to a second aspect of the present invention, in the first aspect , the wiring for extracting the signal of the sensor is fixedly disposed on the transmission unit provided on the turret tool post side and connected to the sensor, and on the piping unit side. The rotation part of the turret tool post corresponds to the transmission part in a non-contact manner, and is constituted by an output part for taking out a sensor signal remotely.

A third aspect of the present invention is characterized in that, in the second aspect , the wiring is inserted through a wiring tube of a wiring unit that is detachably attached to a central portion of the piping unit. .

  According to the first aspect of the present invention, a pipe unit provided with a cutting fluid supply passage for supplying a cutting fluid to a tool on the turret tool post is passed through a hollow hole provided in the center of the turret shaft, and this piping A rotating fluid valve is provided at the tip of the unit, and the cutting fluid is supplied from the piping unit to the turret tool post via the rotating fluid valve. Therefore, when replacing the rotating fluid valve or its seal member, etc. The turret shaft and the turret tool post are not required to be attached and detached, and the maintenance man-hour can be greatly reduced.

  Moreover, since it is a configuration in which a piping unit made of another structure is mounted in the hollow hole of the turret shaft, there is no need to directly form a flow path for piping on the turret shaft, and standardization of the turret shaft can be made possible. The number of pipes can be freely selected according to the allowable cross-sectional area of the hollow hole, and there is an effect that it is possible to easily cope with a change in type.

According to the first aspect of the present invention, the piping unit is provided with the cutting fluid supply passage, the working fluid supply / discharge passage, and the sensor signal extraction wiring, so that a plurality of piping and wiring are passed through the turret shaft. There is no need to form a flow path for this purpose, and it is only necessary to form a hollow hole for penetrating the piping unit, so that the processing of the turret shaft can be facilitated, and the piping and wiring operations can be performed easily.

According to the second aspect of the present invention, the wiring for taking out the sensor signal is provided on the turret tool post side and fixedly arranged on the piping unit side, and is not in contact with the transmission unit by rotational indexing of the turret tool post. And output unit for remotely retrieving sensor signals, even when sensors are provided at multiple index positions of the turret tool post, each sensor is connected to each other by rotational indexing of the turret tool post. The transmission unit can sequentially correspond to the fixedly arranged output unit. Therefore, a plurality of operation units can be installed on the turret tool post.

According to the invention of claim 3 , since the wiring is inserted through the wiring tube of the wiring unit that is detachably attached to the central portion of the piping unit, the wiring is provided even after the piping unit is mounted on the turret shaft. The unit can be attached to the central portion of the piping unit, whereby the wiring work can be facilitated and the assembling property of the turret device can be further improved.

  Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes an X-axis slide mounted on a bed 11 so as to be horizontally movable in the X-axis direction. The X-axis slide 10 is moved in the X-axis direction via a ball screw mechanism 13 by an X-axis servo motor 12. It has been moved. A Z-axis slide 14 is mounted on the X-axis slide 10 so as to be horizontally movable in the Z-axis direction orthogonal to the X-axis direction. The Z-axis slide 14 is Z-axis driven by a Z-axis servo motor 15 via a ball screw mechanism 16. It is designed to move in the direction. A turret device 20 is attached to the Z-axis slide 14, and a turret tool post 21 is provided at the tip of the turret device 20 so as to be able to rotate and index around an axis parallel to the Z-axis direction. A plurality of tools 22 and the like are provided on the turret tool post 21 at equal angular intervals on the circumference.

  A headstock 17 is fixed on the bed 11 adjacent to the turret device 20. A main shaft 18 is supported on the main shaft 17 so as to be rotatable about an axis parallel to the Z-axis direction. The main shaft 18 is rotationally driven by a main shaft drive motor (not shown) installed on the main shaft 17. . A chuck 19 that holds the workpiece W is provided at the tip of the main shaft 18. With such a configuration, the work W held by the chuck 19 has its outer periphery and end face moved by the tools 22 on the turret tool post 21 by the relative movement of the turret device 20 with respect to the headstock 17 in the X-axis direction and the Z-axis direction. Turned. In FIG. 1, reference numeral 80 denotes a work carry-out chute installed in front of the chuck 18.

  Next, a specific configuration of the turret device 20 will be described with reference to FIG. A turret shaft 25 is supported on the slide body 24 of the Z-axis slide 14 to which the turret device 20 is mounted, by a pair of bearing metals 26 separated in the axial direction so as to be able to rotate and index around an axis parallel to the Z-axis direction. A turret tool post 21 is integrally attached to the tip of the turret shaft 25. The front bearing metal 26 is fitted on the inner periphery of a sliding block 23 described later. A bevel gear 27 is fixed to the rear portion of the turret shaft 25, and a bevel gear 29 that is rotationally driven by a turret indexing motor 28 installed in the slide body 24 is meshed with the bevel gear 27. The turret shaft 25 is rotationally indexed by a predetermined angle by a turret indexing motor 28 so that each tool 22 on the turret tool post 21 is sequentially indexed to a machining position MP corresponding to the chuck 19.

  In order to accurately position the turret shaft 25 at each index position, a known ring-shaped toothed coupling 30 is provided between the slide body 24 and the turret shaft 25. The toothed coupling 30 is separated into a first toothed ring 31 fixed to the slide body 24, a second toothed ring 32 fixed to the turret shaft 25, and the first and second toothed rings 31, 32. It consists of a third toothed ring 33 that engages with it. The third toothed ring 33 is coupled via a sliding block 23 to a piston 35 fitted in a cylinder 34 formed in the turret body 24 so as to be slidable only in the rotational axis direction of the turret shaft 25. The third toothed ring 33 is retracted together with the piston 35 and separated from the first and second toothed rings 31 and 32 when the rotation of the turret shaft 25 is indexed, and is moved forward together with the piston 35 and positioned when the turret shaft 25 is positioned. Both the first and second toothed rings 31 and 32 are engaged, and the turret shaft 25 is positioned at a predetermined angular position.

  A plurality of tools 22 and at least one workpiece holding unit 36 are installed on the circumference of the turret tool post 21. As shown in FIG. 1, the workpiece holding unit 36 has a holding claw 37 that can be opened and closed to hold the workpiece W. The turret tool post 21 is provided with an operating cylinder 38 for opening and closing the holding claw 37 and a sensor 39 for detecting the mounting state of the workpiece W held by the holding claw 37 on the chuck 19. Further, the turret tool post 21 is provided with a cutting fluid supply nozzle 40 that supplies a cutting fluid toward the cutting edge (workpiece processing portion) of each tool 22. The workpiece holding unit 36 is indexed to the machining position MP corresponding to the chuck 19 by rotational indexing of the turret shaft 25 when the workpiece W is attached or detached.

  A hollow hole 25a is passed through the center of the turret shaft 25, and a piping unit 41 is passed through the hollow hole 25a so as to be relatively rotatable. As apparent from FIGS. 4 and 5, the piping unit 41 includes a front bracket 43, a rear bracket 44, an intermediate bracket 45 provided between the front and rear brackets 43, 44, It consists of a plurality of pipes 47, 48, 49 on the circumference (three in the embodiment) carried on the part, middle and rear brackets 43, 44, 45.

  As another embodiment of the piping unit 41, as shown in FIG. 6, the bracket 43A is an integrally processed part, and passages 47A, 48A, 49A (not shown) and a center hole 41a are formed therein. Good.

  Two of the three pipes 47, 48, 49 (47, 48) constitute a hydraulic oil supply / discharge passage for supplying and discharging hydraulic oil to and from the working cylinder 38, and the remaining one ( 49) constitutes a cutting fluid supply passage for supplying the cutting fluid to the cutting fluid supply nozzle 40. The piping unit 41 is prevented from rotating by the rear bracket 44 being fixed to the rear surface of the slide body 24. A central hole 41a is formed in the central portion of each bracket 43, 44, 45 of the piping unit 41 to allow wiring to be described later.

  As shown in detail in FIG. 3, the front bracket 43 of the piping unit 41 protrudes forward from the tip of the turret shaft 25, and a rotating fluid valve 50 is disposed on the outer periphery thereof. The rotary fluid valve 50 includes a sleeve-like fixed valve 51 fitted so as to be relatively rotatable, and a rotary valve 52 fitted so as to be rotatable on the outer periphery of the fixed valve 51. The fixed valve 51 is fixed to the outer periphery of the front bracket 43, and the rotary valve 52 is fixed to the front surface of the turret tool post 21. The front bracket 43 and the fixed valve 51 are provided with three radial passages 53, 54, 55 connected to the pipes 47, 48, 49, respectively, at intervals in the axial direction of the turret shaft 25, These radial passages 53, 54 and 55 are opened in the outer peripheral surface of the fixed valve 51.

  On the other hand, two annular grooves 57 and 58 are formed on the inner peripheral surface of the rotary valve 52 with an interval in the axial direction of the turret shaft 25, and the three radial passages are formed in the annular grooves 57 and 58. Of these, the radial passages 53 and 54 connected to the hydraulic oil supply and discharge passages 47 and 48 are always in communication. The annular grooves 57 and 58 are connected to both end chambers of the working cylinder 38 via communication passages 59 and 60 formed in the rotary valve 51 and the turret tool post 21. A plurality of radial passages 61 are formed on the rotary valve 52 at positions spaced apart from the annular grooves 57 and 58 by a predetermined amount in the axial direction, and the inner ends of these radial passages 61 are the inner circumferences of the rotary valve 52. Each surface has an opening. The radial passage 61 is connected to each cutting fluid supply nozzle 40 via a communication passage 62 formed in the turret tool post 21.

  One radial passage 61 corresponding to the machining position MP among the plurality of radial passages is connected to a radial passage 55 connected to the cutting fluid supply passage 49, and is thereby indexed to the machining position MP. The cutting fluid can be supplied only to the cutting fluid supply nozzle 40 corresponding to the tool 22, and the radial passages 61 are sequentially connected to the radial passage 55 by the rotation index of the turret shaft 25. The rear portions of the hydraulic oil supply / discharge passages 47 and 48 are connected to a hydraulic oil supply source via a direction switching valve (not shown), and the rear portion of the cutting fluid supply passage 49 is connected to an opening / closing valve (not shown). Connected to cutting fluid supply source.

  In addition, in one of the fitting surfaces of the fixed valve 51 and the rotary valve 52 of the rotary fluid valve 50 (in the embodiment, on the inner peripheral side of the rotary valve 52), there is a space between the annular grooves 57 and 58 and the radial passage 61. Seal members 63 are mounted on both sides, respectively, and these seal members 63 prevent hydraulic oil or cutting fluid from leaking from the rotating sliding portion (fitting surface) of the rotating fluid valve 50.

  A wiring unit 70 constituting a remote sensor for transmitting the detection signal of the sensor 39 provided on the turret tool post 21 in a non-contact manner is detachably mounted at the center of the piping unit 41. As is clear from FIG. 7, the wiring unit 70 includes a wiring tube 71 through which the wiring is inserted, and a holding bracket 72 having a U-shaped cross section provided at the tip of the wiring tube 71. In the wiring unit 70, the wiring tube 71 is inserted into the center hole 41 a of the piping unit 41, and the holding bracket 72 is fixed to the distal end portion of the piping unit 41, so that the wiring unit 70 is prevented from rotating with respect to the turret body 24. An output portion 73 is provided at the distal end portion of the wiring inserted into the wiring tube 71, and the output portion 73 is attached to the holding bracket 72 in the radial direction at a position corresponding to the machining position MP. The rear end of the wiring is connected to the relay box 82 via the connector 81.

  On the other hand, a ring-shaped block 76 is fixed to the tip surface of the turret tool post 21 concentrically with the turret shaft 25 so as to surround the holding bracket 72 of the wiring unit 70. A connected transmission unit 74 is attached inward. The transmission unit 74 corresponds to the output unit 73 in a non-contact manner when the workpiece holding unit 37 is indexed to the machining position MP, and the signal detected by the sensor 39 can be taken out from the output unit 73. The transmission unit 74 and the output unit 73 constitute a remote sensor 75 that can remotely extract the signal from the sensor 39. A cover 77 is attached to the tip of the block 76, and the tip of the turret tool post 21 is closed by this cover 77 to prevent entry of chips and cutting fluid.

  Next, the operation in the above embodiment will be described. When the workpiece W is attached to or detached from the chuck 19, the workpiece holding unit 36 is positioned at an angular position corresponding to the machining position MP by the rotation index of the turret shaft 25. The workpiece W held by the holding claw 37 of the workpiece holding unit 36 is pressed against the reference surface of the chuck 19 by the movement of the turret tool post 21 by the X-axis servo motor 12 and the Z-axis servo motor 15 in the X-axis direction and the Z-axis direction. It is done. In this state, the chuck 19 is actuated to clamp the workpiece W, and then the working oil is supplied to one chamber of the working cylinder 38 via one of the working oil supply / discharge passages 47 and 48 of the piping unit 41. At the same time, the working oil in the other chamber of the working cylinder 38 is discharged through the other of the working oil supply / discharge passages 47 and 48, and the holding claw 37 of the work holding unit 36 is opened. At the same time, the turret tool post 21 is moved in the Z-axis direction and separated from the chuck 19.

  When the workpiece W is attached to the chuck 19, the transmission unit 74 connected to the sensor 39 attached to the turret tool post 21 corresponds to the output unit 73 of the wiring unit 70 in a non-contact manner. The signal detected by the sensor 39 can be taken out from the output unit 73. Accordingly, the sensor 39 can detect the displacement of the workpiece holding unit 36 in the Z-axis direction relative to the turret tool post 21, and detects whether or not the workpiece W has been pressed to a predetermined reference position of the chuck 19.

  Subsequently, the tool 22 determined by rotating and indexing the turret tool rest 21 is positioned at the machining position MP, and the tool 22 is moved by relative movement of the turret tool rest 21 with respect to the headstock 17 in the X-axis direction and the Z-axis direction. As a result, the outer periphery or end face of the workpiece W is turned. In this state, the cutting fluid supply nozzle 40 corresponding to the tool 22 positioned at the machining position MP is connected to the cutting fluid supply passage 49 via the radial passage 61 and the radial passage 55, and the cutting fluid supply passage is provided. The cutting fluid supplied through 49 is discharged from the cutting fluid supply nozzle 40 toward the machining portion of the workpiece W by the tool 22. In this way, the workpiece W is turned by each tool 22 positioned at the machining position MP, and the workpiece W is machined into a predetermined shape and size.

  By the way, when there is a risk of oil leakage from the rotating / sliding portion of the rotating fluid valve 50 due to wear of the rotating / sliding portion of the rotating fluid valve 50 or damage to the seal member 63, the rotating fluid valve 50 is fixed. The replacement work of the valve 51, the rotary valve 52 or the seal member 63 is performed. In order to replace such wear-damaged parts, the cover 77 is removed from the front surface of the turret tool post 21, the connector 81 fixed to the rear portion of the turret shaft 25 is removed, the fixing of the wiring unit 70 is released, and the wiring unit 70 is removed. Remove from the front of the turret tool post 21. In that state, the fixing of the fixed valve 51 or the rotary valve 52 is released, the fixed valve 51 or the rotary valve 52 is pulled out from the front side of the turret tool post 21, and the fixed valve 51 or the rotary valve 52 is replaced with a new one. The seal member 63 attached to the rotary valve 52 is replaced.

  Therefore, it is not necessary to attach and detach the turret shaft 25 and the turret tool post 21 as in the prior art, and the wear-damaged parts can be replaced from the front side of the turret tool post 21, so that workability can be improved and maintenance can be performed. Man-hours can be greatly reduced.

  In addition, since the piping unit 41 and the wiring unit 70 are mounted in the hollow hole 25a of the turret shaft 25 so as to be relatively rotatable, it is necessary to form a plurality of passages through which piping and wiring respectively pass through the turret shaft 25. Instead, it is only necessary to form the hollow hole 25a for mounting the piping unit 41 and the wiring unit 70 at the center, and the turret shaft 25 can be easily processed and assembled.

  Furthermore, even if the number or type of piping and wiring differs due to changes in the specifications of the turret lathe, the turret shaft 25 can be made common and the piping unit 41 or wiring unit 70 only needs to be changed accordingly. Can be easily accommodated. In addition, since the wiring unit 70 can be mounted by inserting the wiring tube 71 through the center of the piping unit 41 from the front of the turret tool post 21 after mounting the piping unit 41 on the turret shaft 25, wiring work is facilitated. The assembling property of the turret device 20 can be further improved.

  In the above-described embodiment, the hydraulic oil supply / discharge passages 47 and 48, the cutting fluid supply passage 49, and the sensor signal extraction wiring 71 are passed through the hollow hole 25a of the turret shaft 25. In the present invention, the effect of the present invention can be sufficiently exerted even if it is inserted through at least the cutting fluid supply passage, and the work holding unit 36 is not necessarily a requirement according to the present invention.

  In the above-described embodiment, a fixed tool is arranged on the turret tool post 21, but the present invention can also be applied to a tool in which a rotary tool such as a drill is provided on the turret tool post 21.

  In the above-described embodiment, the piping unit 41 is attached to the hollow hole 25a of the turret shaft 25 from the rear, and the wiring unit 70 can be attached to the piping unit 41 from the front side. After assembling, the piping unit 41 and the wiring unit 70 can be assembled individually. Therefore, the piping and wiring work is facilitated, and there is an advantage that the necessary piping unit 41 and wiring unit 70 can be combined according to the specifications. However, the configuration of the piping unit 41 and the wiring unit 70 as separate structures is not necessarily a requirement according to the present invention. A piping unit (pipe wiring unit) in which piping and wiring are integrated is attached to the turret shaft 25. You may wear it.

  In the above-described embodiment, an example in which one work holding unit 36 is provided in the turret tool post 21 has been described. However, since the wiring unit 70 is fixedly arranged, a plurality of indexes of the turret tool post 21 are provided. Since the sensor signals can be respectively taken out at the positions, the present invention is not limited to the one in which one unit (36) is provided in the turret tool post 21, but is also applicable to one in which a plurality of operation units are installed.

It is a schematic plan view of the turret lathe provided with the turret apparatus which shows embodiment of this invention. It is sectional drawing of the turret apparatus cut | disconnected along the AA line of FIG. It is a principal part enlarged view of FIG. 2 which shows the detail of a rotating fluid valve | bulb part. It is a figure which shows a piping unit. It is sectional drawing cut | disconnected along the BB line of FIG. It is a modification of the piping unit shown in FIG. It is a figure which shows a wiring unit.

Explanation of symbols

10 ... X-axis slide, 11 ... bed, 12 ... X-axis servo motor, 14 ... Z-axis slide, 15 ... Z-axis servo motor, 17 ... headstock, 19, ... -Chuck, 20 ... Turret device, 21 ... Turret tool post, 22 ... Tool, 24 ... Slide body, 25 ... Turret shaft, 25a ... Hollow hole, 28 ... Turret Indexing motor, 30 ... toothed coupling, 36 ... work holding unit, 38 ... working cylinder, 39 ... sensor, 40 ... cutting fluid supply nozzle, 41 ... piping unit, 47, 48, 49 ... piping (passage), 50 ... rotating fluid valve, 51 ... fixed valve, 52 ... rotating valve, 57, 58 ... annular groove, 59, 60 ... Communication path, 61 ... radial groove, 63 ... sea Member, 70 ... wiring unit, 71 ... wiring tube, 73 ... output unit, 74 ... transmission unit, 75 ... remote sensor.

Claims (3)

A slide body is provided so as to be relatively movable in the X-axis direction and the Z-axis direction with respect to the headstock that supports the chuck, and the turret shaft is supported on the slide body so that it can be rotated and indexed. The turret device is provided with a turret tool post including a plurality of tools, and rotatively indexes the turret shaft so that the tool on the turret tool post is sequentially indexed to a processing position corresponding to the chuck. A hollow hole is provided in the central portion of the shaft, and a pipe unit provided with a cutting fluid supply passage for supplying cutting fluid to the tool provided on the turret tool post is passed through the hollow hole, and the pipe unit is slid A rotating fluid valve is disposed at the tip of a piping unit that is fixed to the main body and penetrates the turret shaft, and the turret blade is cut from the piping unit via the rotating fluid valve. Thereby to supply a cutting fluid to the side, the turret tool rest, the work holding unit having a holding claw for holding the workpiece supplied to the chuck actuating cylinder and the work holding operates the holding claws A fluid passage connected to both chambers of the working cylinder in the turret tool post, and supplying and discharging working fluid to and from the working cylinder. A turret is provided with a discharge passage, the working fluid supply / discharge passage and the fluid passage are connected to each other via the rotary fluid valve, and a wiring for taking out a signal of the sensor is attached to the piping unit. apparatus. In Claim 1 , the wiring which takes out the signal of the above-mentioned sensor is provided by the above-mentioned turret tool post side, the transmission part connected to the above-mentioned sensor, and fixedly arranged at the above-mentioned piping unit side, and by rotation indexing of the above-mentioned turret tool post A turret device comprising: an output unit adapted to contact the transmission unit in a non-contact manner and to remotely extract a sensor signal. 3. The turret device according to claim 2 , wherein the wiring is inserted into a wiring tube of a wiring unit that is detachably attached to a central portion of the piping unit.

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