JP2015077659A - Chip processing device, chip processing method, and machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an increase of a cost for a chip processing device, and to downsize a whole device without a large space for installation of the chip processing device.SOLUTION: A chip processing device 50, which treats an inner diameter chip C2 generated from an inner side of a cylindrical work-piece W held by a rotationally driven hollow main spindle 11 and an outer diameter chip C1 generated from an outer side of the work-piece W, includes: a guiding pipe 51 which guides the inner diameter chip C2 discharged via an interior of the main spindle 11; a chip conveyor (transfer part) 53 which transfers the outer diameter chip C1; and one crusher 51 into which both of the inner diameter chip C2 from the guiding pipe 51 and the outer diameter chip C1 from the transfer part 53 are introduced.

Description

  The present invention relates to a chip disposal apparatus, a chip disposal method, and a machine tool.

  In a lathe, which is one of machine tools, a workpiece to be machined is held on a rotating spindle, and cutting is performed with a tool while the workpiece is rotated. When the workpiece is cylindrical, outer diameter chips are generated by the outer diameter machining tool and inner diameter chips are generated by the inner diameter machining tool. Outer diameter chips are collected by falling down, transferred to another, and discharged. Further, it is known that the inner diameter chips are discharged to the rear side of the main shaft through the hollow main shaft (for example, see Patent Document 1). In Patent Document 1, after the outer diameter chips and the inner diameter chips are discharged, they are transported and put into separate crushers for processing.

JP 04-129642 A

  However, in Patent Document 1, since the outer diameter chips and the inner diameter chips are put into separate crushers, it is necessary to install the crusher for the outer diameter chips and the crusher for the inner diameter chips independently. Accordingly, a plurality of crushers are required, leading to an increase in the cost of the chip disposal apparatus, and an installation space for two crushers is required, resulting in an increase in the size of the apparatus. Moreover, in patent document 1, internal diameter chips are discharged | emitted with the pressure of liquids, such as a cooling fluid. Accordingly, the inner diameter chips conveyed by the liquid must be processed separately from the outer diameter chips, making it difficult to process them together with a single crusher.

  In view of the above circumstances, in the present invention, both the inner diameter chips and the outer diameter chips are put into one crusher and processed, thereby suppressing the increase in the cost of the chip processing apparatus and increasing the installation space. An object of the present invention is to provide a chip disposal device, a chip disposal method, and a machine tool that can be prevented.

  The present invention is a chip processing apparatus for processing inner diameter chips generated from the inside of a cylindrical workpiece held by a hollow main shaft that is driven to rotate and outer diameter chips generated from the outer side of the workpiece, and is provided through the inside of the main shaft. A guide pipe for guiding the inner diameter chips discharged, a transfer section for transferring the outer diameter chips, and one crusher into which both the inner diameter chips from the guide pipe and the outer diameter chips from the transfer section are charged. It is characterized by providing.

  Further, the discharge side of the guide pipe and the discharge side of the transfer unit may be connected to a bucket formed on the upper part of the crusher. In addition, the guide pipe may guide the inner diameter chips to the crusher by liquid or gas supplied in the main shaft or behind the main shaft. Further, as the transfer unit, a chip conveyor in which an endless connected body in which a plurality of plates are connected endlessly via a hinge part is arranged from below the workpiece to above the crusher may be used. Moreover, you may provide the storage box which accommodates the internal diameter chip and external diameter chip which were processed with the crusher.

  Further, in the present invention, there is provided a chip processing method for processing inner diameter chips generated from the inside of a cylindrical workpiece held by a hollow main shaft that is rotationally driven and outer diameter chips generated from the outer side of the workpiece, It is characterized in that the inner diameter chips discharged through the pipe are guided and the outer diameter chips are transferred and put into one crusher.

  Further, in the present invention, a machine tool including a machine tool main body having a hollow main shaft that holds and rotates a cylindrical workpiece and a tool that processes the workpiece, and an inner diameter chip generated from the inside of the workpiece by the tool. And the above-mentioned chip processing apparatus is used as a processing apparatus of the outer diameter chip produced from the outer side of a workpiece | work with a tool. Moreover, you may provide the supply apparatus of the liquid or gas for discharging | emitting internal-chip chips.

  According to the present invention, since both the inner diameter chips from the guide pipe and the outer diameter chips from the transfer section are put into one crusher, the cost of the chip processing apparatus can be reduced compared to using a plurality of crushers. The rise can be suppressed. In addition, since only one crusher is required, a large space is not required for installing the chip disposal apparatus, and the entire apparatus can be downsized.

  In addition, when the discharge side of the guide pipe and the discharge side of the transfer unit are respectively connected to the bucket formed on the upper part of the crusher, the inner diameter chips and the outer diameter chips are reliably collected by the bucket and sent to the crusher. be able to. In addition, when the guide pipe guides the inner diameter chips to the crusher by the liquid or gas supplied in the main shaft or behind the main shaft, the inner diameter chips can be prevented from remaining in the main shaft due to the liquid or gas. It can be guided to the crusher well to prevent clogging of inner diameter chips in the main shaft. Moreover, in the case where a chip conveyor installed from the lower part of the workpiece to the upper part of the crusher is used as the transfer part, the outer diameter chips can be efficiently conveyed to the upper part of the crusher by the endless connector. Moreover, in the thing provided with the storage box which accommodates the inner diameter chips and outer diameter chips processed by the crusher, the inner diameter chips and the outer diameter chips crushed by the crusher can be collectively collected in the storage box, and the storage box is taken out. Thus, the processed product can be easily conveyed.

  Further, according to the chip treatment method of the present invention, the inner diameter chips and the outer diameter chips are guided in order to guide the inner diameter chips discharged through the main shaft and transfer the outer diameter chips into one crusher. Can be processed efficiently. Further, since the processed products can be collected in one place, the processed products can be easily conveyed.

  In addition, according to the present invention, both the inner diameter chips generated from the inside of the workpiece by the tool and the outer diameter chips generated from the outside of the workpiece are put into one crusher, so that a large installation space is not required. A machine tool that can reduce the size of the entire apparatus can be provided. In addition, with a liquid or gas supply device for discharging inner diameter chips, the supply device can suppress the inner diameter chips from remaining inside the workpiece or the spindle, and the inner diameter chips can be efficiently conveyed to the crusher. it can.

It is a side view showing a schematic structure of a machine tool provided with an example of a chip disposal device concerning a 1st embodiment. It is a perspective view of the machine tool shown in FIG. It is a perspective view which shows an example of the endless connection body used for a chip conveyor. It is a flowchart which shows an example of the chip disposal method. It is a side view which shows the modification of the machine tool shown in FIG. It is a side view which shows schematic structure of the machine tool provided with an example of the chip disposal apparatus which concerns on 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below. Further, in the drawings, in order to describe the embodiment, a part or the whole is schematically described, and a part expressed by changing the scale as appropriate, for example, partly enlarged or emphasized is included. In the following drawings, directions in the drawings will be described using an XYZ coordinate system. In this XYZ coordinate system, a plane parallel to the horizontal plane is defined as an XZ plane. In this XZ plane, the rotation axis direction of the main shaft 11 is denoted as the Z direction, and the direction orthogonal to the Z direction is denoted as the X direction. A direction (vertical direction) perpendicular to the XZ plane is denoted as a Y direction. In each of the X direction, the Y direction, and the Z direction, the direction of the arrow in the figure is the + direction, and the direction opposite to the arrow direction is the − direction.

<First Embodiment>
A machine tool 100 including a chip disposal device 50 according to the first embodiment will be described with reference to FIGS. FIG. 1 is a side view showing an example of a machine tool 100 including a chip disposal device 50. FIG. 2 is a perspective view of the machine tool 100. As shown in FIGS. 1 and 2, the machine tool 100 of the present embodiment includes a machine tool main body 10 and a chip disposal device 50. The machine tool body 10 is a lathe that performs a cutting process on a cylindrical workpiece W.

  As shown in FIGS. 1 and 2, the machine tool main body 10 carries in the workpiece W before being processed and, after cutting the workpiece W while rotating the workpiece W, unloads the processed workpiece W. The machine tool main body 10 includes, for example, an unillustrated loading portion into which a workpiece W before machining and an unillustrated unloading portion to which the workpiece W after machining is unloaded are in the X direction with respect to the machining area of the workpiece W Are located apart. A loader device (not shown) is used as a peripheral device for transferring the workpiece W between the carry-in unit, the processing region, and the carry-out unit. The loader device transfers the workpiece W from the carry-in section to the machining area, and also transfers the processed workpiece W from the machining area to the carry-out section. As will be described later, when the workpiece W is cut in the machining area of the machine tool main body 10, when the outer diameter chips C <b> 1 that are chips when the outer diameter W <b> 1 of the workpiece W is cut and the inner diameter W <b> 2 of the workpiece W are cut. The internal diameter chip C2 which is the chip of this occurs.

  In the machining area of the machine tool main body 10, there are a hollow main shaft 11 that is rotationally driven, a chuck 12 that is disposed at an end portion in the + Z direction of the main shaft 11 and grips a workpiece W transferred from a loader device, and is held by the chuck 12. The outer diameter cutting tool 13 and the inner diameter cutting tool 14 for cutting the workpiece W are provided.

  The main shaft 11 is a hollow cylindrical member and is disposed along the Z direction. A cylindrical tubular member 15 is disposed inside the main shaft 11. The cylindrical member 15 in the main shaft 11 is fixed to an annular member 17 disposed on the rear side (−Z side) of the main shaft 11. A gap may be formed between the main shaft 11 and the cylindrical member 15, and a bearing or the like may be interposed between the two. The cylindrical member 15 is fixed to the annular member 17 and held so as not to rotate. The main shaft 11 is rotatable with respect to the cylindrical member 15. Note that whether or not the cylindrical member 15 is disposed in the main shaft 11 is arbitrary.

  A drive mechanism 16 for rotating the main shaft 11 is installed on the outer peripheral side of the main shaft 11. The drive mechanism 16 has a drive source such as an electric motor that is driven by an instruction from the control device 19. The driving force from the driving source is decelerated by the speed reducer and transmitted to the main shaft 11 via a gear train, a belt, or the like. The main shaft 11 can be rotated at a predetermined rotational speed by controlling the drive mechanism 16. The main shaft 11 may be supported by a bearing such as a ball bearing or a roller bearing.

  A connection pipe 18 is fixed behind the annular member 17 (on the −Z side). In addition, the supply device 20 is connected to the annular member 17 via a supply pipe 20a. The supply device 20 is driven by an instruction from the control device 19 and supplies the gas V to the inside of the annular member 17 through the supply pipe 20a. The gas V is set to be supplied to the rear of the cylindrical member 15 (the rear of the main shaft 11) and flow toward the connection pipe 18. For example, air is used as the gas V, but nitrogen gas or the like may be used. For example, the pressure of the gas V to be supplied is set to a pressure at which an inner diameter chip C2 to be described later can be sent out backward.

  In addition, it is arbitrary whether the supply apparatus 20 and the supply pipe | tube 20a are arrange | positioned. For example, the supply device 20 or the like may not be provided. Further, the supply pipe 20 a is not limited to being connected to the annular member 17. For example, the supply pipe 20 a may be connected to the connection pipe 18 or a part of the cylindrical member 15. Further, the gas V may be supplied from the + Z side of the workpiece W toward the inner diameter W2.

  In the + Z direction of the main shaft 11, a chuck holding portion 22 is attached via an annular connection member 21. Accordingly, the connection member 21 and the chuck holding portion 22 also rotate as the main shaft 11 rotates. The chuck holding unit 22 has a plurality of (for example, 3 to 4) chucks 12 that can move in the radial direction with respect to the rotation axis of the main shaft 11. The chuck 12 is driven by an electric motor (not shown) or hydraulic pressure. The workpiece W can be gripped by closing the chuck 12, and the workpiece W is released by opening the chuck 12.

  The operation of the chuck 12 is performed according to an instruction of the control device 19. For example, the chuck 12 is opened and closed according to the timing of loading and unloading the workpiece W by a loader device (not shown), and the workpiece W is transferred. When the workpiece W is gripped by the chuck 12, the workpiece W can be rotated at a predetermined number of rotations along with the rotation of the spindle 11. The shape and the number of the chucks 12 are not particularly limited, and the configuration is arbitrary as long as the workpiece W can be gripped and released.

  Further, the chuck holding portion 22 is formed with a through hole 22a penetrating in the Z direction. Therefore, when the cylindrical workpiece W is gripped by the chuck 22, the inner diameter W <b> 2 of the workpiece W is connected to the through hole 22 a of the chuck holding portion 22. Further, the through hole 22 a of the chuck holding portion 22 is connected to the cylindrical member 15 via the annular connecting member 21. That is, the inner diameter W2 of the workpiece W is in a state of communicating with the connection pipe 18 through the through hole 22a, the connection member 21, the cylindrical member 15, and the annular member 17.

  By turning the workpiece W, the workpiece W can be turned. For example, an outer diameter cutting tool 13 or an inner diameter cutting tool 14 is used as the processing tool (bite). The outer diameter cutting tool 13 is used to cut the outer diameter W1 of the workpiece W. The outer diameter cutting tool 13 includes a shank 13a and a cutting edge 13b. The cutting edge 13b is brazed to the shank 13a or a throw-away tip that can be exchanged for the shank 13a. The outer diameter cutting tool 13 is held by, for example, a turret or a comb-like tool post (not shown) whose rotation axis is the Z direction.

  The tool post holds a plurality of outer diameter cutting tools 13 and selects one of the outer diameter cutting tools 13. Further, the tool post is moved in the X direction (or Y direction) and the Z direction by a drive system (not shown). The outer diameter of the workpiece W is such that the outer diameter cutting tool 13 is sent in the Z direction by the movement in the Z direction while the outer diameter cutting tool 13 is pressed against the outer diameter W1 of the workpiece W by the movement of the tool post in the X direction. W1 is processed. The trajectory along which the outer diameter cutting tool 13 moves is set in advance by the control device 19, for example. However, the movement of the outer diameter cutting tool 13 may be manually operated by an operator.

  The inner diameter cutting tool 14 is used to cut the inner diameter W2 of the workpiece W. As with the outer diameter cutting tool 13, the inner diameter cutting tool 14 includes a shank 14a and a cutting edge 14b. The blade tip 14b is brazed to the shank 14a or a throw-away tip that can be exchanged for the shank 14a. The inner diameter cutting tool 14 is held by, for example, a turret or a comb-like tool rest (not shown) whose rotation axis is the X direction.

  The tool post holds a plurality of inner diameter cutting tools 14 as described above, and selects one of the inner diameter cutting tools 14. Further, the tool post is moved in the X direction (or Y direction) and the Z direction by a drive system (not shown). The inner diameter W2 of the workpiece W is machined such that the inner diameter cutting tool 14 is sent in the Z direction by moving in the Z direction while the inner diameter cutting tool 14 is pressed against the inner diameter W2 of the workpiece W by moving the tool post in the X direction. . The trajectory along which the inner diameter cutting tool 14 moves is set in advance by the control device 19, for example. However, the movement of the inner diameter cutting tool 14 may be manually operated by an operator. Further, the processing of the outer diameter W1 by the outer diameter cutting tool 13 and the processing of the inner diameter W2 by the inner diameter cutting tool 14 may be different at the same time or may be performed separately.

  As shown in FIGS. 1 and 2, the chip disposal device 50 includes a guide pipe 51, a chip conveyor (belt conveyor) 52 as a transfer unit, and a crusher 54. The guide pipe 51 guides the inner diameter chips C <b> 2 discharged from the main shaft 11 to the crusher 54. The guide pipe 51 includes a flange 51 a connected to the machine tool body 10 and a discharge portion 51 b connected to the crusher 54. The flange 51 a is fixed to a panel 23 (only part of which is shown in FIG. 2) provided in the machine tool body 10, and connects the guide pipe 51 and the connection pipe 18. The panel 23 is provided so as to surround the machine tool main body 10, for example. The discharge part 51 b is disposed above the crusher 54. The guide pipe 51 shown in FIG. 1 is illustrated with a reduced inner diameter from the flange 51a to the discharge portion 51b, but is not limited thereto, and may be one that does not change the inner diameter or that expands the inner diameter. .

  The chip conveyor 52 guides the outer diameter chips C1 dropped from the outer diameter W1 of the workpiece W to the crusher 54. In the chip conveyor 52, an endless connection body 60, which will be described later, is spanned from below the workpiece W to above the crusher 54, and is driven in the direction of the arrow in FIG. 1 by a drive system (not shown). The chip conveyor 52 is disposed substantially in the Z direction on the lower side of the machine tool main body 10 and is inclined so as to incline upward from the −Z side of the machine tool main body 10. The height on the −Z side of the chip conveyor 52 is set according to the height of a bucket 53 and a crusher 54 described later.

  The chip conveyor 52 may be driven by an instruction from the control device 19 or may be manually operated by an operator. Further, the amount of the outer diameter chip C1 that has dropped may be monitored by an optical sensor or the like, and may be driven when a predetermined amount is accumulated. The chip conveyor 52 is surrounded by a cover member 56 except for the chip input part 56a and the chip discharge part 56b. The chip throwing-in part 56a of the cover member 56 is formed so as to gradually reduce the opening area from the wide opening area at the upper end toward the lower side in order to take in the falling outer diameter chips C1. The chip discharge part 56b opens above the crusher 54, and discharges the outer-diameter chip C1.

  The cover member 56 has a plurality of casters 56c and a plurality of fixed legs 56d on the lower surface. The fixed leg 56 d can be expanded and contracted downward with respect to the cover member 56. Therefore, when the fixed leg 56d is extended, the cover member 56 is fixed to the floor and the position of the chip conveyor 52 is set. On the other hand, when the fixed leg 56d is contracted, the cover member 56 can be moved by the caster 56c. Thereby, the chip conveyor 52 can be moved with respect to the machine tool main body 10. Whether or not the cover member 56 is installed is arbitrary, and the cover member 56 may not be installed.

  FIG. 3 is a perspective view showing an example of an endless connector 60 used for the chip conveyor 52. As shown in FIG. 3, the endless connection body 60 of the chip conveyor 52 is a connection body configured in an endless manner, for example, by connecting a plurality of plates 60 a by hinge portions 60 b. Each plate 60a is rotatable with respect to each other about the shaft portion 60c of the hinge portion 60b. The dimension in the X direction of the plate 60a is set in accordance with, for example, the opening width in the X direction of the chip throwing portion 56a of the cover member 56 or the like. The dimension in the Z direction of the plate 60a is arbitrarily set.

  A plurality of protrusions are formed (dimple processed) on the surface of the plate 60a of the endless connector 60, but may not be formed. A protruding piece 61 is formed on a part of the plurality of plates 60a. The protruding piece 61 is, for example, a metal plate-like piece, and is fixed to the surface of the plate 60a by welding or the like. As the protruding piece 61, a piece having a length substantially the same as the width of the endless connector 60 is used. Further, the height of the projecting piece 60 is set to a height that can hold the outer diameter chips C1 to be conveyed when the endless connector 60 is moved while being inclined upward (see FIG. 1).

  The protruding pieces 61 are formed at regular intervals along the longitudinal direction of the endless connector 60. In addition, although the protrusion piece 61 is fixed in the state which protruded in the Y direction, you may fix in the state inclined in the advancing direction (-Z direction in FIG. 1) of the endless coupling body 60, for example. Whether or not the protruding piece 61 is formed is arbitrary. Moreover, instead of using the endless connector 60 shown in FIG. 3 as the chip conveyor 52, for example, a part or all of a belt made of rubber or cloth may be used.

  Returning to FIG. 1 and FIG. 2, the bucket 53 is disposed on the terminal end side of the chip conveyor 52, that is, below the chip discharging portion 56 b of the cover member 56. The bucket 53 has a rectangular cylindrical shape, and is formed such that the opening area of the upper part 53a is wide and the opening area of the lower part 53b is gradually narrowed. The bucket 53 guides the outer diameter chips C <b> 1 discharged from the chip conveyor 52 to the crusher 54. The bucket 53 and the chip discharge part 56b of the cover member 56 may be surrounded by a panel or the like.

  Further, the discharge portion 51 b of the guide pipe 51 is connected to the upper portion 53 a of the bucket 53. Thereby, the inner diameter chip C <b> 2 discharged through the guide pipe 51 is discharged into the bucket 53 and guided to the crusher 54. Thus, by discharging the outer diameter chips C1 and the inner diameter chips C2 to the bucket 53, both are guided to one crusher 54. Further, the upper portion 53a of the bucket 53 may be closed with a lid or the like except for the receiving portion of the outer diameter chips C1 and the discharge portion 51b of the guide pipe 51.

  The shape of the bucket 53 is arbitrary as long as it can guide the outer diameter chips C1 and the inner diameter chips C2 to the crusher 54. Further, whether or not the bucket 53 is arranged is arbitrary. When the bucket 53 is not disposed, the outer diameter chips C1 discharged from the chip conveyor 52 may be directly charged into the crusher 54 disposed below. Further, by arranging the discharge part 51 b of the guide pipe 51 above the crusher 54, the inner diameter chips C <b> 2 may be directly put into the crusher 54.

  The crusher 54 crushes the outer diameter chips C1 and the inner diameter chips C2 that are input from above through the bucket 53 and discharges them from below. The crusher 54 has, for example, two rotation shafts including a plurality of crusher cutters, and the rotation shafts are arranged so that the cutters are engaged with each other. By rotating these two rotating shafts, the outer diameter chips C1 and the inner diameter chips C2 are bitten and pulverized by a crusher cutter.

  The crusher 54 is not limited to the above-described configuration, and various configurations capable of pulverizing the outer diameter chips C1 and the inner diameter chips C2 are applicable. The operation of the crusher 54 is controlled by, for example, the control device 19, but may be manually operated by an operator. Further, the crusher 54 may be driven in synchronism with the driving of the chip conveyor 52 and the operation of the machine tool body 10 in accordance with the discharge of the outer diameter chips C1 and the inner diameter chips C2.

  The storage box 55 is disposed below the crusher 54 with the opening 55a facing each other. The storage box 55 stores the processing chips of the outer diameter chips C1 and the inner diameter chips C2 crushed by the crusher 54 from the opening 55a. A plurality of casters 55 b are formed on the lower surface of the storage box 55. Accordingly, for example, an operator or the like can easily move the storage box 55 while processing waste is stored inside. Further, the storage box 55 may be transported by an electric motor or the like, a loader device or the like, and the stored processing waste may be transported to other processing equipment or the like.

  As shown in FIG. 2, the chip disposal apparatus 50 includes a frame 57 that is framed in a rectangular shape. In the frame 57, a shelf 57a is formed in the middle part, and a support part 57b is formed in the upper part. A crusher 54 is installed on the shelf 57a. The shelf 57 a has an opening for discharging the processing waste crushed by the crusher 54 to the lower storage box 55. The operation panel 19a is fixed to the support portion 57b. The operation panel 19a constitutes part or all of the control device 19 shown in FIG. 1 and can instruct the operation of the chip disposal device 50 by the operator.

  The frame 57 has a plurality of casters 57c and a plurality of fixed legs 57d on the lower surface. The fixed leg 57 d can be expanded and contracted downward with respect to the frame 57. Therefore, when the fixed leg 57d is extended, the frame 57 is fixed to the floor, and the positions of the crusher 54 and the bucket 53 are set. On the other hand, when the fixed leg 57d is contracted, the frame 57 can be moved by the caster 56c. Thereby, the crusher 54 and the bucket 53 can be moved with respect to the machine tool main body 10 or the chip conveyor 52. Note that the frame 57 and the cover member 56 of the chip conveyor 52 may be coupled. Thereby, the whole chip disposal apparatus 50 can be moved integrally with respect to the machine tool main body 10.

  Next, the operation of the above machine tool 100 will be described. FIG. 4 is a flowchart for explaining the operation of the machine tool 100 including the chip disposal device 50. As shown in FIG. 4, first, the workpiece W before processing is transported by a loader device or the like and is gripped by the chuck 12, whereby the workpiece W is held at a predetermined position with respect to the spindle 11. Subsequently, the driving mechanism 16 is driven to rotate the main shaft 11. While rotating the workpiece W together with the main shaft 11, the outer diameter cutting tool 13 is moved by a track set in the control device 19 or the like in advance or by an operator's manual operation. As a result, the outer diameter W1 of the workpiece W is cut by the outer diameter cutting tool 13 (step S101).

  By cutting the outer diameter W1 of the workpiece W by the outer diameter cutting tool 13, an outer diameter chip C1 is generated. The outer-diameter chip C1 falls from the workpiece W and is placed on the endless connected body 60 of the chip conveyor 52 through the chip feeding part 56a of the cover member 56. Subsequently, by driving the endless connector 60 of the chip conveyor 52, the outer diameter chips C1 are transferred to the chip unloading portion 52b by the endless connector 60 (step S102). The endless connector 60 proceeds upward from the middle of the transfer of the outer diameter chips C1. Although the outer diameter chip C1 falls off due to the inclination of the endless connecting body 60, the outer diameter chip C1 can be reliably transferred because it is locked by the protruding piece 61 formed on the endless connecting body 60.

  At the same time as or separately from steps S101 and S102, the inner diameter cutting tool 14 is moved by a track previously set in the control device 19 or the like, or by manual operation of the operator. As a result, the inner diameter W2 of the workpiece W is cut by the inner diameter cutting tool 14 (step S103).

  When the inner diameter W2 of the workpiece W is cut by the inner diameter cutting tool 14, inner diameter chips C2 are generated. The inner diameter chip C2 enters the cylindrical member 15 from the inner peripheral portion of the workpiece W through the through hole 22a of the chuck holding portion 22 or the like. When cutting the inner diameter W2 of the workpiece W, a specific inner diameter cutting tool 14 may be used so that the inner diameter chips C2 are spirally formed in almost one direction. Cutting conditions may be set. Thereby, it is possible to suppress clogging of the inner diameter chips C2 in the cylindrical member 15, the guide pipe 51, and the like. In addition, the transfer of the inner diameter chip C2 in the cylindrical member 15 is performed together with the cutting by the inner diameter cutting tool 14.

  When cutting with the inner diameter cutting tool 14, the supply device 20 is driven, and the gas V is supplied into the annular member 17 via the supply pipe 20a. The inner diameter chips C2 that have passed through the cylindrical member 15 enter the induction pipe 51 through the connection pipe 18 due to the pressure of the gas V, and are transferred toward the discharge portion 51b (step S104). Note that whether or not to supply the gas V is arbitrary, and the supply device 20 may not be driven when the inner diameter cutting tool 14 performs the cutting process.

  Next, the outer diameter chips C1 are discharged from the chip discharge section 52b of the chip conveyor 52 and dropped, and the inner diameter chips C2 are discharged from the discharge section 51b of the guide pipe 51 and collected by the bucket 53 (step S105). ). The outer diameter chips C1 and the inner diameter chips C2 collected by the bucket 53 are introduced from above the one crusher 54, and are pulverized and processed by the crusher 54 (step S106).

  The drive of the crusher 54 may be synchronized with the drive of the chip conveyor 52 and the drive of the machine tool main body 10 or may be appropriately driven by a manual operation by an operator. Further, for example, an opening / closing door is disposed between the bucket 53 and the crusher 54, and the crusher 54 is driven when a certain amount of outer diameter chips C1 and inner diameter chips C2 are accumulated in the bucket 53, and the opening / closing door is opened and removed. The diameter chips C1 and the inner diameter chips C2 may be put into the crusher 54.

  As described above, according to the present embodiment, both the outer diameter chips C1 from the chip conveyor 52 as the transfer unit and the inner diameter chips C2 from the guide pipe 51 are put into one crusher 54. As compared with the use of the crusher, an increase in the cost of the chip disposal device 50 can be suppressed. Further, since only one crusher 54 is required, a large space is not required for installing the chip disposal device 50, and the entire machine tool 100 can be downsized.

<Modification>
FIG. 5 shows an outline of a machine tool according to a modification. In the present modification, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified. Further, FIG. 5 shows only the main part, and the other configuration is the same as that of the work description 100 shown in FIGS. 1 and 2.

  As shown in FIG. 5, in this modification, the tubular member 24 is fixed to the −Z side of the annular member 17. As the cylindrical member 24, a member having substantially the same outer diameter and inner diameter as the cylindrical member 15 is used, but a member different from the cylindrical member 15 may be used. The length of the cylindrical member 24 is set according to the amount of movement of the main shaft 11, as will be described later. The −Z side of the cylindrical member 24 is inserted into the inner peripheral side of the connection pipe 18. The cylindrical member 24 and the connection pipe 18 are not fixed, and the cylindrical member 24 can slide in the Z direction with respect to the connection pipe 18. A gap may be formed between the cylindrical member 24 and the connection pipe 18.

  In the present modification, the tubular member 24 is movable at a distance L1 from the position A1 to the position A2 at the −Z side end. As a result, the workpiece W held by the main shaft 11 can move the distance L1 in the Z direction, like the cylindrical member 24. Therefore, when machining the workpiece W with the outer diameter cutting tool 13 or the inner diameter cutting tool 14, instead of moving the outer diameter cutting tool 13 or the like in the Z direction, or Z of the outer diameter cutting tool 13 or the like. Along with the movement of the direction, the workpiece W can be moved in the Z direction while rotating. Note that the movement of the main shaft 11 in the Z direction may be performed by the drive mechanism 16, or may be performed by a drive mechanism (not shown) other than the drive mechanism 16. Further, the distance L1 that is the amount of movement of the workpiece W can be arbitrarily set by changing the lengths of the connection pipe 18 and the cylindrical member 24 in the Z direction.

  Even when the cylindrical member 24 moves relative to the connection pipe 18, the inner diameter chip C <b> 2 can be transferred from the cylindrical member 15 to the connection pipe 18 via the cylindrical member 24. Further, since the gas V is supplied from the annular member 17, the inner diameter chips C <b> 2 can be efficiently transferred to the guide pipe 51 through the cylindrical member 24 and the connection pipe 18 by the pressure of the gas V.

  Thus, according to the present modification, both the outer diameter chips C1 and the inner diameter chips C2 are put into the single crusher 54 as in the first embodiment described above, so that the cost of the chip processing apparatus 50 can be reduced. The rise can be suppressed. Further, since only one crusher 54 is required, the entire machine tool 100 can be reduced in size. In this modification, the workpiece W can be moved in the Z direction. Therefore, even when the outer diameter cutting tool 13 or the like does not have a moving mechanism in the Z direction, the workpiece W is cut in the Z direction. It can be carried out. Even when the outer diameter cutting tool 13 or the like has a moving mechanism in the Z direction, the outer diameter cutting tool 13 or the like can be moved greatly in the Z direction with respect to the workpiece W.

Second Embodiment
A machine tool provided with an example of a chip disposal apparatus according to the second embodiment will be described with reference to FIG. FIG. 6 shows an outline of a machine tool provided with a chip disposal device 150 according to the second embodiment. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified. Further, FIG. 6 shows only the main part, and the other configuration is the same as the machine tool 100 shown in FIGS. 1 and 2.

  As shown in FIG. 6, the chip disposal device 150 has a guide pipe 151. The guide pipe 151 includes a flange 151 a connected to the machine tool body 10 and a discharge portion 151 b connected to the chip conveyor 52. Like the guide pipe 50 shown in FIG. 1, the flange 51 a is fixed to the panel 23 surrounding the machine tool main body 10 and connects the guide pipe 151 and the connection pipe 18. In FIG. 6, the panel 23 is omitted. The discharge unit 151 b is connected to the cover member 56 of the chip conveyor 52. The guide pipe 151 shown in FIG. 6 is described with a reduced inner diameter from the flange 151a to the discharge portion 151b. However, the guide pipe 151 is not limited to this and does not change the inner diameter or expands the inner diameter. Also good.

  The discharge portion 151 b of the guide pipe 151 is connected to an opening portion 56 e that is displayed on the inclined portion of the cover member 56. Thereby, the inner diameter chips C2 are discharged onto the endless connector 60 of the chip conveyor 52, transferred together with the outer diameter chips C1, discharged to the bucket 53, and processed by the crusher 54. In addition, it is not limited to connecting the discharge part 151b of the guide pipe 151 to the inclined part of the cover member 56 as shown in FIG. For example, you may connect to the position of the further upper part of the chip conveyor 52, and you may connect to the part which the endless connection body 60 moves to a horizontal direction.

  The point that the internal-chip chip C2 is transferred by the pressure of the gas V supplied by the supply device 20 is the same as in the first embodiment. However, in the case of the present embodiment, since the discharge destination of the inner diameter chips C2 by the guide pipe 151 is on the endless connector 60, a liquid such as water or oil may be used instead of the gas V. When the inner diameter chip C <b> 2 is transferred by the pressure of the liquid, the liquid is discharged onto the endless connector 60, so that the liquid can be prevented from being charged into the crusher 54.

  When a liquid is used for the transfer of the inner diameter chip C2, the liquid V1 may be supplied from the workpiece W side by the supply device 120 as shown in FIG. As the liquid V1, a cooling liquid for cooling the inner diameter W2 of the workpiece W may be used. Thereby, when the inner diameter cutting tool 14 cuts the inner diameter W2 of the workpiece W, the inner diameter chip C2 can be efficiently transferred to the guide pipe 151 by the pressure of the coolant. The liquid V1 may be supplied to the inner diameter W2 from a part of the inner diameter cutting tool 14 (for example, the shank 14a). Further, the gas V may be supplied from the supply device 120.

  Thus, according to the present embodiment, as in the first embodiment, both the outer diameter chips C1 and the inner diameter chips C2 are thrown into the single crusher 54, which increases the cost of the chip processing apparatus 150. Can be suppressed. Further, since only one crusher 54 is required, the entire machine tool can be reduced in size. In this embodiment, the discharge part 151 a of the guide pipe 151 is connected to the chip conveyor 52. As a result, the inner diameter chips C2 discharged from the guide pipe 151 are transferred together with the outer diameter chips C1 by the chip conveyor 52, so that both the outer diameter chips C1 and the inner diameter chips C can be reliably transferred to the crusher 54. .

  Further, since the inner diameter chips C2 are discharged to the chip conveyor 52, even when a liquid is used as a fluid for transferring the inner diameter chips C2, it is possible to prevent the liquid from being put into the crusher 54. Moreover, the chip disposal method according to the present embodiment is substantially the same as the flowchart shown in FIG. However, in step S105 in FIG. 4, the point where the outer diameter chips C1 and the inner diameter chips C2 are collected is the bucket 53 in the first embodiment, but the point is the chip conveyor 52 in this embodiment.

  As mentioned above, although embodiment and the modification were demonstrated, this invention is not limited to the description mentioned above, A various change is possible in the range which does not deviate from the summary of this invention. For example, in the above-described embodiment and modification, the rotation axis direction of the main shaft 11 is parallel to the Z direction, but the present invention is not limited to this. For example, the + Z side end of the main shaft 11 is lifted upward (+ Y direction). The main shaft 11 may be inclined. As a result, the cylindrical member 15 is inclined downward toward the guide pipe 51, so that the inner chip C <b> 2 passes through the cylindrical member 15 by its own weight and can be efficiently guided to the guide pipes 51 and 151. As a result, the gas V supplied to the connection pipe 18 or the like is unnecessary or the pressure can be reduced, and the operating cost can be reduced.

  In the above-described embodiment and modification, a chip correction unit for linearly correcting the inner diameter chip C2 may be provided. In this case, the chip correction unit includes a forming mechanism for forming the inner diameter chip C2 before entering the cylindrical member 15 so as to be linear. By correcting the inner diameter chips C2 to be linear by this forming mechanism, it is possible to suppress the inner diameter chips C2 from being clogged by the cylindrical member 15, the guide pipe 51, and the like. In addition, the chip correction unit may be installed along with the inner diameter cutting tool 14.

  Further, in the above-described embodiment and modification, instead of supplying the gas V by the supply device 20, for example, a suction device that sucks the inside from the discharge portion 51 b of the guide pipe 51 may be arranged. With this suction device, the inner diameter chips C2 in the cylindrical member 15 and the guide pipe 51 can be drawn toward the discharge portion 51b and discharged to the bucket 53. Further, in addition to suction inside the guide pipe 51 and the like by the suction device, the gas V may be supplied by the supply device 20.

  In the above-described embodiment and modification, one chip conveyor 52 is used as the transfer unit of the chip disposal apparatuses 50 and 150. Instead, a plurality of chip conveyors are used, and these chip conveyors are connected. You may do it. Moreover, it is not limited to using the chip conveyor 52 which has the endless connection body 60 as a transfer part of the chip processing apparatuses 50 and 150, For example, other conveying apparatuses, such as a screw conveyor, may be used.

C1 ... Outer diameter chip C2 ... Inner diameter chip W ... Workpiece 10 ... Machine tool body 11 ... Spindle 13 ... Outer diameter cutting tool (tool)
14 ... Inner diameter cutting tool (tool)
20, 120 ... Supply device 50, 150 ... Chip disposal device 51, 151 ... Guide pipe 52 ... Chip conveyor (transfer section)
53 ... Bucket 54 ... Crusher 55 ... Storage box 60 ... Endless connector 60a ... Plate 60b ... Hinge part 100 ... Machine tool

Claims (8)

A chip processing device for processing inner diameter chips generated from the inside of a cylindrical workpiece held by a hollow main shaft to be rotated and outer diameter chips generated from the outside of the workpiece,
A guide pipe that guides the inner diameter chips discharged through the main shaft, a transfer section that transfers the outer diameter chips, the inner diameter chips from the guide pipe, and the outer diameter chips from the transfer section. A chip disposal apparatus comprising: a crusher into which both are charged.   The chip disposal apparatus according to claim 1, wherein a discharge side of the guide pipe and a discharge side of the transfer unit are respectively connected to buckets formed on an upper portion of the crusher.   The chip treatment apparatus according to claim 1 or 2, wherein the guide pipe guides the inner diameter chips to the crusher by a liquid or a gas supplied in the main shaft or behind the main shaft.   A chip conveyor in which an endless connection body in which a plurality of plates are connected endlessly via a hinge part is disposed from the lower part of the work to the upper part of the crusher is used as the transfer part. The chip disposal apparatus according to any one of 3.   The chip disposal apparatus according to any one of claims 1 to 4, further comprising a storage box that houses the inner diameter chips and the outer diameter chips processed by the crusher. A chip processing method for processing inner diameter chips generated from the inside of a cylindrical workpiece held by a hollow main shaft to be rotated, and outer diameter chips generated from the outside of the workpiece,
A chip processing method characterized by guiding the inner diameter chips discharged through the inside of the main shaft and transferring the outer diameter chips into a single crusher. A machine tool including a machine tool main body having a hollow main shaft that holds and rotates a cylindrical workpiece and a tool that processes the workpiece,
The chip treatment apparatus according to any one of claims 1 to 5 is used as a processing apparatus for inner diameter chips generated from the inside of the workpiece by the tool and outer diameter chips generated from the outside of the workpiece by the tool. A machine tool characterized by   The machine tool according to claim 7, further comprising a liquid or gas supply device for discharging the inner diameter chips.

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