CN114025911B

CN114025911B - Lathe and chip discharging method thereof

Info

Publication number: CN114025911B
Application number: CN202080047092.2A
Authority: CN
Inventors: 浅羽洋平
Original assignee: Star Micronics Co Ltd
Current assignee: Star Micronics Co Ltd
Priority date: 2019-08-22
Filing date: 2020-06-29
Publication date: 2023-11-21
Anticipated expiration: 2040-06-29
Also published as: WO2021033430A1; TWI841774B; TW202108288A; KR102640189B1; KR20220002640A; JP7364870B2; JP2021030355A; CN114025911A

Abstract

The invention improves the workability of discharging chips of a chip receiver by a simple structure in a lathe. The lathe (1) comprises a holding part (40), a chip receiver (50) and a locking mechanism (60). The chip receiver (50) has a base end (52) connected to the holding portion (40) via a hinge (45), and a movable end (53) on the opposite side of the base end (52), and the chip receiver (50) is disposed below the holding portion (40) and tiltable to a receiving position (PO 1) for receiving falling chips (C1), and a discharging position (PO 2) below the receiving position (PO 1). The locking mechanism (60) has a first locking portion (pin) (61) provided to the holding portion (40) and a second locking portion (hook) (62) provided to the chip receiver (50), and the first locking portion (61) and the second locking portion (62) are releasably locked when the chip receiver (50) assumes the receiving posture (PO 1). When the first locking part (61) and the second locking part (62) are unlocked, the chip receiver (50) can be converted into a discharge posture (PO 2).

Description

Lathe and chip discharging method thereof

Technical Field

The present invention relates to a lathe provided with a chip receiver and a chip discharging method thereof.

Background

A lathe repeatedly holds a workpiece with a spindle and processes the workpiece with a tool in a processing chamber, thereby manufacturing a plurality of products. In order to carry out a plurality of products to the outside of the processing chamber, a product conveyor is sometimes used. Here, cutting oil is used for machining the workpiece, and the machining of the workpiece causes chip generation. Since the cutting oil and chips adhere to the products conveyed by the product conveyor, a chip receiver for receiving chips and the like is disposed below the carry-out end of the product conveyor. The chip receiver is mounted to the machine body by a plurality of screws.

Although not a technique for receiving chips and the like adhering to products conveyed by a product conveyor, patent document 1 discloses a cutting agent recovery device for recovering chips and cutting agents discharged from a chip conveyor. The oil pan of the cutting agent recovery device is supported on a large frame that allows the carriage to enter the interior, and is linked to the movement of the carriage by a complex link mechanism. When the carriage is positioned in the frame at a recovery position below the discharge end of the chip conveyor, the oil pan assumes a retracted posture and recovers chips and cutting agents discharged from the chip conveyor to the carriage. When the carriage is moved away from the recovery position, the oil pan assumes a receiving posture, and the cutting agent dropped from the debris conveyor is recovered to the oil pan.

Background art literature

Patent literature

Patent document 1: japanese patent laid-open publication 2016-196072

Disclosure of Invention

[ problem to be solved by the invention ]

When chips are accumulated in a chip receiver disposed below a carry-out end of a product conveyor, the accumulated chips need to be discharged from the chip receiver. Therefore, the operator of the lathe unscrews the plurality of screws, removes the chip receiver from the machine body, discards the chips accumulated in the chip receiver, and then mounts the chip receiver to the machine body using the plurality of screws. This series of chip discarding operations is very time-consuming and labor-consuming. And the cutting agent recovery device requires a large frame for allowing the trolley to enter the inside, and a complicated link mechanism.

The invention discloses a technique for improving the operability of discharging chips of a chip receiver by using a simple structure in a lathe.

[ means of solving the problems ]

The lathe of the present invention has a configuration including:

a holding section;

a chip receiver having a base end portion connected to the holding portion via a hinge and a movable end portion on the opposite side of the base end portion, the chip receiver being disposed below the holding portion and tiltable to a receiving position for receiving falling chips and a discharging position below the receiving position; and

A locking mechanism having a first locking portion provided to the holding portion and a second locking portion provided to the chip receiver, the first locking portion and the second locking portion being releasably locked when the chip receiver assumes the receiving posture; and is also provided with

When the first locking portion and the second locking portion are unlocked, the chip receiver can be converted into the discharge posture.

In addition, the chip discharging method of the lathe according to the present invention has a configuration in which the lathe includes:

a holding section;

a chip receiver having a base end portion connected to the holding portion via a hinge and a movable end portion on the opposite side of the base end portion, the chip receiver being disposed below the holding portion and tiltable to a receiving position for receiving falling chips and a discharging position below the receiving position;

a locking mechanism configured to releasably lock the chip receiver with respect to the holding portion in the receiving posture; and

A chip box which receives chips generated by machining a workpiece at a storage position in a machining chamber and can draw out the chips from the storage position to the outside of the machining chamber;

The chip discharging method includes:

a drawing step of drawing the chip box from the storage position; and

And a discharging step of releasing the lock of the lock mechanism, and switching the chip receiver from the receiving posture to the discharging posture, so that chips fall from the chip receiver in the discharging posture to the chip box in the extracted state.

[ Effect of the invention ]

According to the present invention, the workability of discharging chips from the chip receiver can be improved by a simple structure in the lathe.

Drawings

Fig. 1 is a front view schematically showing an example of a lathe.

Fig. 2 is a right side view schematically showing an example of a lathe.

Fig. 3 is a view schematically showing an example in which chips are accumulated in the chip receiver as the product is carried out.

Fig. 4 is a front view schematically showing an example of the holding portion, the hinge, the chip receiver, and the locking mechanism.

Fig. 5 is a plan view schematically showing an example of the positional relationship between the chip receiver and the protruding portion and the blocking member on the horizontal plane.

Fig. 6 is a right side view schematically showing an example of the inclination restricting structure.

Fig. 7 is a plan view schematically showing an example of the positional relationship between the chip receiver and the chip box in the extracted state on the horizontal plane.

Fig. 8 is a right side view schematically showing an example of the discharge posture restriction structure.

Fig. 9 is a perspective view schematically showing an example of discharging chips from a chip receiver to a chip box.

Fig. 10A is a vertical cross-sectional view schematically showing an example of the chip receiver and the holding portion, and fig. 10B and 10C are vertical cross-sectional views schematically showing another example of the chip receiver together with the holding portion.

Fig. 11 is a right side view schematically showing an example of a lathe provided with a chip conveyor.

Fig. 12 is a right side view schematically showing a lathe provided with a chip receiver of a comparative example.

Detailed Description

Next, embodiments of the present invention will be described. Of course, the following embodiments are merely examples of the present invention, and not all the features shown in the embodiments are essential elements of the solution of the present invention.

(1) Summary of the technology contained in the present invention:

first, an outline of the technology included in the present invention will be described with reference to examples shown in fig. 1 to 12. The drawings of the present application are schematically illustrating examples, and the magnification in each direction shown in these drawings may be different, and the drawings may be inconsistent. Of course, the elements of the present technology are not limited to the specific examples indicated by symbols.

Form 1

The lathe 1 according to one embodiment of the present technology includes a holding portion 40, a chip receiver 50, and a lock mechanism 60. The chip receiver 50 has a base end 52 connected to the holding portion 40 via a hinge 45, and a movable end 53 opposite to the base end 52, and the chip receiver 50 is disposed below the holding portion 40 and tiltable in a receiving position PO1 for receiving the dropped chip C1, and in a discharging position PO2 below the receiving position PO1 of the movable end 53. The lock mechanism 60 includes a first lock portion (for example, a pin 61) provided to the holding portion 40 and a second lock portion (for example, a hook 62) provided to the chip receiver 50, and the first lock portion (61) and the second lock portion (62) are releasably locked when the chip receiver 50 assumes the receiving posture PO 1. When the first locking portion (61) and the second locking portion (62) are unlocked, the chip receiver 50 can be shifted to the discharge posture PO2.

In the above-described configuration 1, when the first locking portion (61) and the second locking portion (62) are locked in a state in which the chip receiver 50 assumes the receiving posture PO1, the receiving posture PO1 of the chip receiver 50 is maintained, and the chip receiver 50 receives the fallen chip C1. When an operator of the lathe releases the lock of the first lock portion (61) and the second lock portion (62) and tilts the chip receiver 50 from the receiving position PO1 to the discharging position PO2, the chip C1 can be discharged from the chip receiver 50. Then, when the operator tilts the chip receiver 50 from the discharge position PO2 to the receiving position PO1 and locks the first locking portion (61) and the second locking portion (62), the state of the chip receiver 50 in the receiving position PO1 is maintained.

As described above, when the operator is to discharge chips accumulated in the chip receiver, it is unnecessary to perform time-consuming and labor-consuming operations such as attaching and detaching the chip receiver using a plurality of screws. In a state where the chip receiver 50 is connected to the holder 40 via the hinge 45, the operator can temporarily set the chip receiver 50 to the discharge posture PO2 by a simple operation of the lock mechanism 60, and thereby discharge the chip C1 from the chip receiver 50. In addition, the lathe 1 does not require a large frame and a complicated link mechanism. Therefore, the present embodiment can provide a lathe with a simple structure for improving the workability of discharging chips from the chip receiver.

Further, when the weight of the accumulated chips is larger than the predetermined amount and the chip receiver is tilted from the receiving posture to the discharging posture, the chip receiver cannot be controlled to tilt, and therefore, it is necessary to always provide a receiving member below the chip receiver to receive the chips discharged from the chip receiver. In the above-described configuration 1, when the operator is not present, the chip receiver maintains the state of the receiving posture as long as the first locking portion and the second locking portion have been locked in advance, so that it is not necessary to always provide the receiving member, which contributes to space saving.

Here, tilting means a motion in which the slope changes within a specified range (for example, between the receiving posture PO1 and the discharging posture PO2 shown in fig. 6). This remark also applies to the following forms.

Form 2

As illustrated in fig. 3, the lathe 1 may further include a product conveying device (for example, a product conveyor 30) that conveys out a product P1 obtained by processing the workpiece W1. The chip receiver 50 may be disposed below the carry-out end 32 of the product conveying device 30. This configuration can improve the workability of discharging chips received by the chip receiver, which have fallen from the carry-out end of the product carrying device.

Form 3

As illustrated in fig. 1, the lathe 1 may further include a chip box 20, and the chip box 20 may receive chips C1 generated by machining the workpiece W1 at a storage position 11a in the machining chamber 11 and may be drawn out of the machining chamber 11 from the storage position 11 a. As illustrated in fig. 8 and 9, when the chip cassette 20 is in the extracted state (for example, the state of the extracted position 14 a) in which it has been extracted from the storage position 11a and the chip receiver 50 is in the discharge position PO2, the chip C1 may drop from the chip receiver 50 to the chip cassette 20. When the operator withdraws the chip box 20 storing the chips C1 from the storage position 11a in the processing chamber 11, the chips C1 can be discharged from the chip receiver 50 to the chip box 20 by releasing the locking of the first locking portion (61) and the second locking portion (62) and tilting the chip receiver 50 from the receiving position PO1 to the discharging position PO 2. Thus, the operator can discard the chips C1 stored in the chip receiver 50 at the same time even when discarding the chips C1 stored in the chip box 20. Therefore, this embodiment can improve the workability of the waste chips.

Here, the extracted state of the chip box may be a state in which chips can fall from the chip receiver in the discharge posture to the chip box, and a part of the chip box may be left in the machining chamber. This remark also applies to the following forms.

Form 4

As illustrated in fig. 7, the hinge 45 may be located outside the range A1 of the chip box 20 in the extracted state on a horizontal plane H0. The movable end 53 of the chip receiver 50 in the receiving position PO1 may be located within the range A1 of the chip cassette 20 in the extracted state on a horizontal plane H0. As illustrated in fig. 8, the lathe 1 may further include a discharge posture restricting structure ST1 for restricting the movable end 53 of the chip receiver 50 in the discharge posture PO2 to be within the range A1 of the chip cassette 20 in the extracted state on a horizontal plane H0. Since the movable end 53 of the chip receiver 50 in the discharge position PO2 is lower than the receiving position PO1, the chip C1 stored in the chip receiver 50 falls off from the movable end 53 of the chip receiver 50 in the discharge position PO 2. Here, since the movable end 53 has been limited to the range A1 of the chip box 20 in the extracted state on the horizontal plane H0, the chip C1 falls from the movable end 53 to the chip box 20. Therefore, the present embodiment can reliably transfer chips of the chip receiver to the chip box.

Form 5

As illustrated in fig. 6, the lathe 1 may further include an inclination restricting structure ST2, and the inclination restricting structure ST2 may reduce the range of inclination of the chip receiver 50 from the receiving posture PO1 when the chip cartridge 20 is positioned at the storage position 11a, as compared with when the chip cartridge 20 is in the extracted state. Since the range of inclination of the chip receiver 50 from the receiving posture PO1 becomes smaller when the chip cassette 20 is located at the storing position 11a, this configuration can suppress the chip from falling off from the chip receiver when the chip cassette is not extracted from the storing position.

Form 6

In the chip discharging method according to one aspect of the present technology, the lathe 1 includes the holding portion 40, the chip receiver 50, the lock mechanism 60, and the chip box 20. The chip receiver 50 has a base end 52 connected to the holding portion 40 via a hinge 45, and a movable end 53 opposite to the base end 52, and the chip receiver 50 is disposed below the holding portion 40 and tiltable in a receiving position PO1 for receiving the dropped chip C1, and in a discharging position PO2 below the receiving position PO1 of the movable end 53. The locking mechanism 60 releasably locks the chip receiver 50 with respect to the holder 40 in the receiving position PO 1. The chip box 20 receives chips C1 generated by machining the workpiece W1 at a storage position 11a in the machining chamber 11, and is capable of being pulled out of the machining chamber 11 from the storage position 11 a. The chip discharging method includes the following steps (b) and (c). (b) And a step of extracting the chip box 20 to an extracted state (for example, a state of the extracted position 14 a) from the storage position 11 a. (c) And a discharging step of releasing the lock of the lock mechanism 60 and converting the chip receiver 50 from the receiving position PO1 to the discharging position PO2, thereby dropping the chip C1 from the chip receiver 50 in the discharging position PO2 to the chip cassette 20 in the extracted state.

According to the above-described aspect 6, the operator first brings the chip box 20 into the extracted state from the storage position 11 a. Next, the operator releases the lock of the lock mechanism 60, and changes the chip receiver 50 from the receiving position PO1 to the discharging position PO2, so that the chip C1 falls from the chip receiver 50 in the discharging position PO2 to the chip box 20 in the extracted state.

According to the above, the operator does not need to perform time-consuming and labor-consuming operations such as attaching and detaching the chip receiver 50 using a plurality of screws. When the operator withdraws the chip cartridge 20 storing the chips C1 from the storage position 11a in the processing chamber 11, the chip receiver 50 can be temporarily brought into the discharge posture PO2 by the operation of the lock mechanism 60 in a state where the chip receiver 50 is connected to the holding portion 40 via the hinge 45, and the chips C1 are discharged from the chip receiver 50 to the chip cartridge 20. As a result, the chips C1 stored in the chip receiver 50 can be discarded together even when the chips C1 stored in the chip box 20 are discarded. In addition, the lathe 1 does not require a large frame and a complicated link mechanism. Therefore, the present embodiment can provide a chip discharging method for improving the workability of discharging chips from a chip receiver in a lathe with a simple structure.

Form 7

As illustrated in fig. 5, the lathe 1 may further include a stopper member 15, and the stopper member 15 may be detachably attached to a chip box passing portion 14 through which the chip box 20 is drawn out of the processing chamber 11. In this case, the following steps (a), (b) and (c) may be performed.

(a) And a discharging step of discharging the blocking member 15 from the chip box passing portion 14.

(b) And a step of extracting the chip cartridge 20 from the storage position 11a to an extracted state (for example, a state of the extracted position 14 a) of the chip cartridge passing portion 14 from which the blocking member 15 has been removed.

(c) And a discharging step of releasing the lock of the lock mechanism 60 and converting the chip receiver 50 from the receiving position PO1 to the discharging position PO2, thereby dropping the chip C1 from the chip receiver 50 in the discharging position PO2 to the chip cassette 20 in the extracted state.

According to the above-described aspect 7, the operator first removes the blocking member 15 from the chip box passing portion 14 from which the chip box 20 is drawn. Next, the operator brings the chip box 20 into a pulled-out state in which it is pulled out from the storage position 11a toward the chip box passing portion 14 from which the blocking member 15 has been removed. Then, the operator releases the lock of the lock mechanism 60, and changes the chip receiver 50 from the receiving position PO1 to the discharging position PO2, so that the chip C1 falls from the chip receiver 50 in the discharging position PO2 to the chip box 20 in the extracted state.

According to the above, the aspect 7 can improve the workability of discharging chips of the chip receiver in a lathe provided with a blocking member attached to a chip box passing portion from which the chip box is drawn out.

(2) Specific examples of lathes:

fig. 1 schematically shows a front surface of a lathe 1 in a state in which a door 18 is opened. Fig. 2 schematically shows the right side of the lathe 1. In addition, the drawings referred to in the present specification are merely examples for explaining the present technology, and are not intended to limit the present technology. The description of the positional relationship of the respective parts is merely an example. Accordingly, the present technique includes the case of reversing the left and right directions, reversing the rotation direction, and the like. The same direction, position, and the like are not limited to the strict agreement, but include a case where the direction, position, and the like deviate from the strict agreement due to an error.

For convenience of explanation, in the lathe 1, the outer surface of the door 18 other than the upper surface is a front surface, and the front direction D1, the rear direction D2, the upper direction D3, the lower direction D4, the left direction D5, and the right direction D6 are indicated in each figure as necessary. The positional relationship in the lathe 1 will be described with reference to these directions (D1 to D6) unless otherwise specified. The control axis is a left-right direction, a Z-axis direction, a horizontal direction orthogonal to the Z-axis direction, an X-axis direction, and a vertical direction orthogonal to the Z-axis direction. Fig. 1 and 2 show "X" indicating the X-axis direction, "Y" indicating the Y-axis direction, and "Z" indicating the Z-axis direction.

The lathe 1 shown in fig. 1 and the like is an NC lathe provided with an NC (Numerical Control ) device (not shown), and an operation unit 85 is disposed on the front surface of the cover 10 surrounding the processing chamber 11. In the processing chamber 11, main shafts 81 and 82 facing each other in the Z-axis direction, tool holders 83 and 84 for holding tools for processing the workpiece W1 held by the main shafts 81 and 82, and the like are arranged. The work W1 is processed in a state where the door 18 is closed.

The main shaft 81 is also called front main shaft, and the main shaft 82 is also called back main shaft. The main shafts 81 and 82 are rotatable about a rotation axis along the Z-axis direction in a state where the workpiece W1 is held. At least one of the main shafts 81 and 82 is movable in the Z-axis direction, and the main shaft 82 receives the workpiece W1 processed on the front surface from the main shaft 81 by approaching the two main shafts 81 and 82 in the Z-axis direction. Here, when the lathe 1 is of a spindle moving type, the spindle 81 moves in the Z-axis direction, and when the lathe 1 is of a spindle fixed type, the spindle 81 does not move in the Z-axis direction. The tool stages 83,84 are movable in at least 1 of the X-axis direction and the Y-axis direction, and also movable in the Z-axis direction. The tool holders 83,84 may be turret tool holders as shown in fig. 1, comb-tooth-shaped tool holders, or the like. The tool includes a turning tool including a cutter, a drill, an end mill, or the like. After the workpiece W1 held by the spindle 82 is subjected to back surface processing, a product P1 is obtained. After the product P1 obtained by processing the workpiece W1 is released from the holding of the spindle 82, it falls onto the product conveyor 30 (an example of a product conveying device) and is conveyed from the carry-in end 31 in the processing chamber 11 to the carry-out end 32 outside the processing chamber 11. Fig. 1 illustrates a case where the carry-out end 32 extending from the side portion 10a of the cover portion 10 is covered with the outer cover 35. In addition, the main shaft 82 is also movable in the X-axis direction so as to drop the product P1 to the product conveyor 30. The operation unit 85 has a display panel and various buttons, and receives various operations. The NC apparatus executes an NC program stored in a non-volatile semiconductor memory not shown.

Cutting oil is used for machining the workpiece W1, and the machining of the workpiece W1 causes chip generation. For this purpose, the chip box 20 that receives chips generated by machining the workpiece W1 together with cutting oil is housed in the chip box housing portion 12. The accommodating position 11a of the chip cartridge 20 in the chip cartridge accommodating section 12 is located inside the processing chamber 11 and below the main shafts 81, 82. The chip box housing portion 12 includes a chip box passing portion 14, and the chip box passing portion 14 is a portion from which the chip box 20 is drawn out of the machining chamber 11. Thus, the chip box 20 can be pulled out of the processing chamber 11 from the storage position 11a by the operation of the handle 22. In fig. 1, the chip box 20 located at the storage position 11a is indicated by a broken line, and the chip box 20 located at the extraction position 14a capable of receiving chips from the chip receiver 50 is indicated by a two-dot chain line. The chips containing the cutting oil fall down to the reservoir 21 located inside the chip box 20. The cutting oil accumulated in the reservoir 21 is separated from the chips and falls into the cooling groove 70 located in the lower portion of the lathe 1. After the operator of the lathe 1 withdraws the chip box 20 from the storage position 11a to the withdrawal position 14a, the chips stored in the storage 21 are transferred to the chip carrying-out carriage, and are discarded to a discarding place located outside O1 of the lathe 1.

Cutting oil and chips are also attached to the product P1. The cutting oil and chips adhering to the product P1 are moved from the inside of the processing chamber 11 to the carry-out end 32 by the product conveyor 30. The holding portion 40 and the chip receiver 50 are disposed below the carry-out end portion 32 of the product conveyor 30 together to prevent chips and the like from falling onto the floor of the factory.

Fig. 3 schematically illustrates a situation in which chips C1 are accumulated in the chip receiver 50 in association with the carry-out of the product P1. A scraper 33 is disposed at the carry-out end 32 of the product conveyor 30 so as to be spaced apart by a gap CL1 through which the product P1 does not sufficiently pass. Therefore, if the product recovery container 38 is provided at the front end of the scraper 33 in advance, the product P1 drops along the scraper 33 into the product recovery container 38 at the carry-out end 32. The cutting oil and chips C1 that have moved to the carry-out end 32 together with the product P1 drop through the clearance CL1 to the chip receiver 50 via the holding portion 40.

Fig. 4 schematically illustrates the front side of the holder 40, the hinge 45, the chip receiver 50 and the locking mechanism 60. In order to make the illustration clear, fig. 4 shows a state in which the hook 62 (an example of the second locking portion) is brought into the unlocked state in a state in which the chip receiver 50 is kept in the receiving posture PO 1. In fig. 4, the discharge posture PO2 of the chip receiver 50 and the hook 62 in the locked state are shown by two-point chain lines. Fig. 5 schematically illustrates the positional relationship of the chip receiver 50 with the projection 13 and the blocking member 15 on the horizontal plane H0. Fig. 6 schematically illustrates the right side of the inclination restricting structure ST2 constituted by the blocking member 15. In fig. 6, the inclination restricting posture PO3 of the chip receiver 50 is indicated by a solid line, and the receiving posture PO1 and the discharging posture PO2 of the chip receiver 50 are indicated by two-dot chain lines. Fig. 7 schematically illustrates a positional relationship between the chip receiver 50 and the chip box 20 in the extracted state on the horizontal plane H0. Fig. 8 schematically illustrates the right side of the discharge posture restriction structure ST1 constituted by the protruding portion 13. In fig. 8, the discharge position PO2 of the chip receiver 50 is indicated by a solid line, and the receiving position PO1 of the chip receiver 50 is indicated by a two-dot chain line. Fig. 9 schematically illustrates the situation in which the chip C1 is discharged from the chip receiver 50 to the chip box 20. Fig. 10A schematically illustrates a longitudinal section of the chip receiver 50 and the holder 40. In fig. 10A, the receiving posture PO1 of the chip receiver 50 is shown by a solid line, and the inclination restricting posture PO3 and the discharging posture PO2 of the chip receiver 50 are shown by two-dot chain lines. Fig. 5 and 7 are plan views, and the horizontal plane H0 is a plane along fig. 5 and 7, that is, a plane defined by the straight lines along the front-rear direction (D1, D2) and the straight lines along the left-right direction (D5, D6) in the case where the straight lines intersect.

Next, each constituent element for discharging the chip C1 will be described.

As shown in fig. 3, a side end 41 disposed on the left side of the holding portion 40 immediately below the carry-out end 32 of the product conveyor 30 is attached to the side portion 10a of the cover 10 by, for example, a screw SC1 (including a bolt). A pin 61 (an example of a first locking portion) included in the locking mechanism 60 is fixed to the right side end 42 of the holding portion 40. A chip receiver 50 is arranged below the holder 40. As shown in fig. 4, the front surface portion 43 of the holding portion 40 is connected to the base end portion 52 of the chip receiver 50 via a hinge 45. As shown in fig. 6 and the like, the holding portion 40 supports the housing 35 of the carry-out end portion 32.

As shown in fig. 4, 6, etc., the hinge 45 can perform an operation of bending around the tilting axis AX1 along the left-right direction. The hinge 45 includes, for example, a first piece 45a attached to the front surface portion 43 of the holder 40 by a screw SC2, and a second piece 45b attached to the base end portion 52 of the chip receiver 50 by a screw SC 3. The base end portion 52 of the chip receiver 50 is connected to the holder 40 via a hinge 45. The first piece 45a and the second piece 45b are coupled so as to be rotatable about the tilting axis AX1, and thereby the chip receiver 50 can tilt about the tilting axis AX 1. The tilting axis AX1 may also be referred to as a rotation axis that becomes the center of the rotational movement of the chip receiver 50. In this specific example, tilting of the chip receiver 50 via the hinge 45 means a rotational movement of the chip receiver 50 such that the slope of the chip receiver 50 changes within a predetermined range (between the receiving posture PO1 and the discharging posture PO 2) around the rotation axis (tilting axis AX 1).

As shown in fig. 8, 10A, and the like, the chip receiver 50 has a base end portion 52 connected to the holding portion 40 via a hinge 45, and a movable end portion 53 on the opposite side of the base end portion 52, and the chip receiver 50 can be tilted between a receiving position PO1 and a discharging position PO 2. Here, the receiving posture PO1 is a posture when the movable end 53 is positioned at the uppermost position within the tilting range of the chip receiver 50, and is a posture for receiving the chips C1 dropped from the carry-out end 32 of the product conveyor 30. In the receiving posture PO1, the bottom 51a of the reservoir 51 located inside the chip receiver 50 descends from the movable end 53 toward the base end 52. As shown in fig. 10A, the bottom portion 51a includes a general portion 51c located at a position facing the front direction D1 from the bent portion 51b, and an inclination changing portion 51D located at a position facing the rear direction D2 from the bent portion 51 b. When receiving the posture PO1, the normal portion 51c gradually descends from the bent portion 51b toward the base end portion 52, and the inclination of the inclination changing portion 51d is steeper than that of the normal portion 51 c. The discharge posture PO2 is a posture in which the movable end portion 53 is positioned at the lowermost position within the tilting range of the chip receiver 50, and is a posture for discharging the chips C1 accumulated in the chip receiver 50. In the discharge posture PO2, the bottom of the reservoir 51 is lowered from the base end 52 toward the movable end 53.

As shown in fig. 3 and the like, a cutting oil return flow passage 56 is provided at a position near the base end portion 52 in the left side end portion 54 of the chip receiver 50. When the chip receiver 50 assumes the receiving posture PO1, the cutting oil separated from the chips C1 stored in the reservoir 51 moves toward the base end portion 52, flows back to the processing chamber 11 through the cutting oil return flow path 56, moves along a path not shown, and finally falls into the cooling groove 70. A structure such as a mesh may be provided in the cutting oil return passage 56 to suppress the outflow of the chip C1. A hook 62 included in the lock mechanism 60 is provided at the right side end 55 of the chip receiver 50.

Since the chip receiver 50 is located below the holding portion 40, the movable end 53 is lowered by its own weight without the lock mechanism 60. With the lock mechanism 60, the chip receiver 50 maintains the receiving posture PO1 unchanged, and there is no need to always dispose a chip recovery device below the chip receiver 50, which contributes to space saving. In addition, when the chip C1 is to be discharged from the chip receiver 50, the simple operation of unlocking the pin 61 and the hook 62 is required, and thus the operability of the operator is improved. Next, details of the lock mechanism 60 will be described.

The pin 61 provided in the holding portion 40 protrudes from the right side end 42 in the right direction D6. As shown in fig. 4, the pin 61 includes a small diameter portion 61a connected to the side end portion 42, and a large diameter portion 61b extending from the small diameter portion 61 a. The small diameter portion 61a is a size that can enter the recess 62c (see also fig. 6) of the hook 62, and the large diameter portion 61b is a size that cannot enter the recess 62c of the hook 62.

The hook 62 provided in the chip receiver 50 includes a pin portion 62a protruding from the right side end portion 55 in the right direction D6, and a hook main body 62b rotatable about a rotation axis AX2 along the left-right direction with respect to the pin portion 62 a. The pin portion 62a includes a small diameter portion and a large diameter portion, like the pin 61, and the hook body 62b provided to prevent the falling off from the large diameter portion is provided rotatably about the small diameter portion. The hook body 62b has a recess 62c of a size sufficient for the small diameter portion 61a of the pin 61 to enter, and an operation portion 62d for an operator to rotate the hook body 62b.

In a state where the pin 61 and the hook 62 are not locked, when the operator rotates the hook body 62b to insert the pin 61 into the recess 62c while bringing the chip receiver 50 into the receiving posture PO1, the pin 61 and the hook 62 are locked. Thus, the chip receiver 50 in the receiving position PO1 is held by the holding portion 40 via the hinge 45 and the lock mechanism 60, and the receiving position PO1 of the chip receiver 50 is maintained. In this state, when the operator rotates the hook body 62b to remove the recess 62c from the pin 61, the lock between the pin 61 and the hook 62 is released. Thus, the operator can tilt the chip receiver 50 with respect to the holder 40 via the hinge 45, and can change the chip receiver 50 from the receiving posture PO1 to the discharging posture PO2.

Further, the operator performs a work of discharging chips C1 from the chip receiver 50 at a position facing the side portion 10a of the cover portion 10. Since the lock mechanism 60 of this specific example is located at a position facing the operator, the operator can easily perform a task of locking the lock mechanism 60 or unlocking the lock mechanism 60.

The chips C1 stored in the chip receiver 50 may be discharged to a chip recovery device such as a chip carrying-out carriage, or may be discharged to a chip cartridge 20 provided in the lathe 1 as shown in fig. 8 and 9. When the chip cartridge 20 is positioned at the storage position 11a and the chip receiver 50 assumes the receiving position PO1, as shown in fig. 5, 6, etc., a plate-like blocking member 15 having a thickness in the lateral direction (D5, D6) is attached to the chip cartridge passage 14. The stopper 15 is located below the chip receiver 50 in the receiving position PO1, and restricts the range of inclination of the chip receiver 50 from the receiving position PO1 to at most the inclination restricting position PO3 even if the lock between the pin 61 and the hook 62 is released. When the chip cartridge 20 is pulled out from the storage position 11a, the plug member 15 is removed from the chip cartridge passage portion 14, and the chip receiver 50 can be tilted to the discharge position PO2. Therefore, when the chip cassette 20 is positioned at the storage position 11a, the range in which the chip receiver 50 is inclined from the receiving posture PO1 is smaller than when the chip cassette 20 is in the extracted state. The stopper member 15 attached to the chip cartridge passing portion 14 is an example of the inclination restricting structure ST 2.

By attaching the blocking member 15 to the chip cartridge passing portion 14, the range in which the chip receiver 50 is inclined from the receiving posture PO1 is reduced to at most the inclination restricting posture PO3. This suppresses the chip C1 from falling off the chip receiver 50 when the chip cassette 20 is not pulled out from the accommodating position 11 a. In particular, when the chip receiver 50 assumes the inclination restricting posture PO3, as shown in fig. 10A, the inclination changing portion 51d of the bottom portion 51a of the reservoir 51 descends from the movable end portion 53 toward the base end portion 52. Therefore, the falling of the chip C1 from the chip receiver 50 is effectively suppressed.

Further, a chip receiver 50A as illustrated in fig. 10B may also be used instead of the chip receiver 50. The chip receiver 50A shown in fig. 10B has no bent portion 51B at the bottom 51a of the reservoir 51, and the bottom 51a is lowered at a constant inclination from the movable end 53 toward the base end 52 in the receiving position PO 1. However, when the chip receiver 50A is in the inclination restricting posture PO3 shown in fig. 10A or the like, the chip C1 may fall out of the chip receiver 50A. Since the chip receiver 50 shown in fig. 10A and the like is provided with the inclination changing portion 51d at the bottom portion 51a, the chip C1 is not likely to fall out of the chip receiver 50 when it is in the restricting posture PO3.

The chip box housing portion 12 includes a protruding portion 13 disposed in the front direction D1 of the blocking member 15. As shown in fig. 7, the protruding portion 13 has a thickness in the left-right direction (D5, D6). As shown in fig. 8, the protruding portion 13 has a contact portion 13a at a corner portion, at which the bottom of the chip receiver 50 in the discharge posture PO2 contacts.

As shown in fig. 8 and 9, when the chip box 20 is pulled out to the pulling-out position 14a, a part of the product conveyor 30 is positioned further forward than the range of the chip box 20 on the horizontal plane H0. In order to reliably discharge the chips C1 stored in the chip receiver 50 to the chip cartridge 20, a hinge 45 is disposed on the front surfaces of the holder 40 and the chip receiver 50, and a movable end 53 is disposed on the rear end of the chip receiver 50. As shown in fig. 7, the hinge 45 is located outside the range A1 of the chip box 20 in the extracted position 14a on the horizontal plane H0. The movable end 53 of the chip receiver 50 in the receiving position PO1 is located in the range A1 of the chip cassette 20 in the extraction position 14a on the horizontal plane H0. As shown in fig. 8, the contact portion 13a of the protruding portion 13 restricts the movable end 53 of the chip receiver 50 in the discharge position PO2 to the range A1 of the chip cassette 20 in the extraction position 14a on the horizontal plane H0. The contact portion 13a is an example of the discharge posture restriction structure ST 1.

When the projection 13 is not provided in the chip box housing portion 12, the front wall 21a of the storage portion 21 of the chip box 20 restricts the movable end 53 of the chip receiver 50 in the discharge position PO2 to the range A1 of the chip box 20 in the extraction position 14a on the horizontal plane H0. In this case, the front wall 21a is an example of the discharge posture restriction structure ST 1.

When the chip receiver 50 assumes the discharge position PO2, the bottom 51a of the reservoir 51 descends from the base end 52 toward the movable end 53, and therefore the chips C1 of the reservoir 51 drop from the movable end 53. Here, in the discharge posture PO2, the movable end 53 is also located within the range A1 of the chip box 20 on the horizontal plane H0, so that the chips C1 of the reservoir 51 reliably fall from the movable end 53 to the chip box 20.

Further, a chip receiver 50B as illustrated in fig. 10C may also be used instead of the chip receiver 50. The chip receiver 50B shown in fig. 10C has a substantially vertical wall when the movable end portion 53 has the receiving posture PO1, the bent portion 51B is not provided at the bottom portion 51a of the storage portion 51, and the bottom portion 51a descends at a constant inclination from the movable end portion 53 toward the base end portion 52 when the receiving posture PO 1. However, when the chip receiver 50B is in the discharge position PO2 shown in fig. 10A and the like, even if the bottom portion 51a is lowered from the base end portion 52 toward the movable end portion 53, the chip C1 is not likely to fall from the reservoir portion 51 due to the obstruction of the wall of the movable end portion 53. When the chip receiver 50 shown in fig. 10A and the like is in the discharge position PO2, the inclination changing portion 51d is in a state of being lowered from the bent portion 51b toward the movable end 53, and therefore the chip C1 is easily dropped from the storage portion 51.

(3) Specific examples of the chip discharging method of the lathe include:

next, an example of a chip discharging method of the lathe 1 will be described.

When machining the workpiece W1, the operator performs a work of setting the chip receiver 50 to the receiving posture PO1 and locking the pin 61 and the hook 62, and a work of setting the chip box 20 at the accommodating position 11a and attaching the plug member 15 to the chip box passing portion 14. The state after the operation is shown in fig. 2. In this state, when the chip C1 stored in the chip box 20 is to be discarded, the operator performs the operation of discarding the chip C1, for example, according to the following procedure.

(a) And (3) a discharging step:

first, the operator removes the blocking member 15 as the inclination restricting structure ST2 from the chip cartridge passing portion 14. Thus, when the lock of the pin 61 and the hook 62 is released, the chip receiver 50 can be tilted from the receiving posture PO1 to the discharging posture PO2.

(b) Extraction:

after the removal of the blocking member 15, the operator withdraws the chip box 20 from the storage position 11a to the withdrawal position 14a in the rightward direction D6. The state after the operation is shown in fig. 7. The movable end 53 of the chip receiver 50 in the receiving position PO1 is located in the range A1 of the chip cassette 20 in the extracted position 14a on the horizontal plane H0.

(c) And a discharging step:

after the chip box 20 is extracted, the operator first rotates the hook body 62b (see fig. 4) to remove the pin 61 from the recess 62c, thereby unlocking the pin 61 from the hook 62. Next, the operator changes the chip receiver 50 from the receiving posture PO1 to the discharging posture PO2. The transformed state is shown in fig. 8 and 9. Further, the operator drops the chip C1 from the chip receiver 50 in the discharge posture PO2 to the chip box 20 in the extracted state.

(d) Discarding:

after discharging the chip C1 of the chip receiver 50, the operator first converts the chip receiver 50 from the discharge posture PO2 to the receiving posture PO1, and rotates the hook body 62b to insert the pin 61 into the recess 62C, thereby locking the pin 61 with the hook 62. Next, the operator transfers the chips C1 stored in the chip cassette 20 to the chip carrying-out carriage, and discards the chips C1 to a discarding place located outside O1 of the lathe 1.

(e) Resetting:

after discarding the chip C1, the operator returns the chip cartridge 20 from the extraction position 14a to the storage position 11a, and attaches the blocking member 15 to the chip cartridge passing portion 14. Thus, even if the lock between the pin 61 and the hook 62 is released, the chip receiver 50 can only be tilted from the receiving position PO1 to the inclination restricting position PO3.

(4) Specific example of the action and effect:

fig. 12 schematically shows the right side of a lathe provided with a chip receiver 950 of a comparative example. In addition, elements similar to those in the above example are denoted by the same reference numerals, and detailed description thereof is omitted.

The chip receiver 950 shown in fig. 12 is arranged below the carry-out end 32 of the product conveyor 30 in a shape similar to the combination of the holding portion 40 and the chip receiver 50 in the example. The chip receiver 950 is attached to the side portion 10a of the cover 10 by a plurality of screws SC 9. When discharging chips accumulated in the chip receiver 950, the operator first needs to remove the cover 35 located above the chip receiver 950, unscrew the plurality of screws SC9, and remove the chip receiver 950 from the side portion 10a of the cover 10. Further, after discharging the chips accumulated in the chip receiver 950 to the chip cassette 20 or the chip carrying-out carriage, the operator needs to attach the chip receiver 950 to the side portion 10a of the cover 10 with a plurality of screws SC9, and also needs to attach the cover 35 to the chip receiver 950.

The series of chip evacuation operations is time-consuming and labor-consuming.

In this specific example, when the pin 61 is locked with the hook 62 in the state where the chip receiver 50 is in the receiving posture PO1, the receiving posture PO1 of the chip receiver 50 is maintained, so that the chip receiver 50 receives the chip C1 dropped from the product conveyor 30. When the operator releases the lock of the pin 61 and the hook 62 and tilts the chip receiver 50 from the receiving position PO1 to the discharging position PO2, the chip C1 can be discharged from the chip receiver 50. This operation may be performed when the chips C1 stored in the chip box 20 are discarded. When the operator withdraws the chip cassette 20 from the storage position 11a to the withdrawal position 14a, the chip C1 can be discharged from the chip receiver 50 to the chip cassette 20 by making the chip receiver 50 into the discharge posture PO 2. Thus, the operator can discard the chips C1 stored in the chip receiver 50 at the same time even when discarding the chips C1 stored in the chip box 20.

As described above, when the operator is to discharge chips stored in the chip receiver, the chip receiver 50 can be temporarily brought into the discharge posture PO2 by a simple operation of the lock mechanism 60 in a state where the chip receiver 50 is connected to the holder 40 via the hinge 45, and the chips C1 are discharged from the chip receiver 50. Since time-consuming and labor-consuming operations such as attaching and detaching the chip receiver using a plurality of screws are not required, this specific example can improve the workability of discharging chips of the chip receiver with a simple structure. In addition, when the operator is not present, as long as the pin 61 and the hook 62 have been locked in advance, the chip receiver 50 maintains the state of the receiving posture PO1 unchanged, so that it is not necessary to provide chip recovery means below the chip receiver 50 all the time, which contributes to space saving.

(5) Variation example:

various modifications can be envisaged in the present invention.

For example, the position of the chip receiver is not limited to the right side surface of the lathe, and may be the left side surface of the lathe, the back surface of the lathe, or the like.

In the above embodiment, the pin 61 is provided in the holder 40 and the hook 62 is provided in the chip receiver 50, but the pin may be provided in the holder. The locking mechanism is not limited to a combination of a pin and a hook, and may be a combination of a knob screw (a screw that can be screwed with a finger) and a screw hole, or an adhesion by a magnetic force, or the like. For example, if a screw hole is provided in the holding portion and a knob screw is provided in the chip receiver, the locking mechanism is locked when the knob screw is screwed into the screw hole, and the locking mechanism is unlocked when the knob screw is screwed out of the screw hole.

The position of the hinge is not limited to the front surfaces of the holder and the chip receiver, but may be the back surfaces of the holder and the chip receiver, the left side surfaces of the holder and the chip receiver, or the like.

Further, even in a lathe having a structure in which the blocking member attached to the chip box passing portion does not limit the inclination of the chip receiver 50 to the inclination restricting posture PO3, the effect of improving the workability of discharging chips of the chip receiver by a simple structure can be obtained. Further, even in a lathe in which at least a part of the chip cartridge, the inclination restriction structure, the discharge posture restriction structure, and the chip cartridge are not provided, the effect of improving the workability of discharging chips from the chip receiver by a simple structure can be obtained.

In a lathe, a chip conveyor may also be provided instead of a chip box. Fig. 11 schematically shows the right side of the lathe 1 seen from the chip conveyor 16 in a view of the lathe 1 provided with the chip conveyor 16. Elements similar to those in the above example are denoted by the same reference numerals, and detailed description thereof is omitted.

The chip carrying-in end of the chip conveyor 16 is inserted into the processing chamber from the chip box passing portion 14 of the chip box housing portion 12. The chip conveyor 16 extending from the chip box passing portion 14 is raised toward the carry-out end of the chip, but this is not shown.

The chip conveyor 16 is provided with a cover 17, so that chips cannot be discharged from the chip receiver 50 to the chip conveyor 16. Accordingly, the hinges 45 are provided on the back surfaces of the holder 40 and the chip receiver 50, whereby chips are discharged forward from the chip receiver 50. That is, the rear end of the chip receiver 50 is a base end 52, and the front end of the chip receiver 50 is a movable end 53. The hook 62 is provided at the right-hand side end of the chip receiver 50. In order to tilt the chip receiver 50 between the receiving position PO1 and the discharging position PO2, the chip cartridge housing portion 12 is not provided with the protruding portion 13.

The operator may perform the following operations: the chip carrying-out carriage is disposed in front of the chip conveyor 16 at a position where chips fall from the chip receiver 50, and the chip receiver 50 is shifted from the receiving posture PO1 to the discharging posture PO2 by releasing the lock of the pin 61 and the hook 62. Thus, the operator can drop the chips of the chip receiver 50 from the front end, i.e., the movable end portion 53 of the chip receiver 50 to the chip carrying-out carriage.

(6) Summarizing:

as described above, according to various aspects of the present invention, a technique and the like for improving the workability of discharging chips of a chip receiver in a lathe by a simple structure can be provided. Of course, the basic operation and effect described above can be obtained by a technique consisting of only the constituent elements of the independent claim.

Further, the configuration may be a configuration in which each of the configurations disclosed in the above examples is replaced with each other or a combination thereof is changed, a configuration in which each of the configurations disclosed in the prior art and the above examples is replaced with each other or a combination thereof is changed, or the like. The present invention also includes these configurations and the like.

[ description of symbols ]

1 lathe

10 cover part

10a side portion

11 processing chamber

11a storage position

12 chip box holding part

13 protruding part

13a contact portion

14 chip box passing part

14a extraction position

15 blocking part

20 chip box

21 storage portion

22 handle

30 product conveyor (product conveying device example)

31 carry-in end

32 carry-out end portion

40 holding part

41,42 side ends

43 front surface portion

45 hinge

50 chip receiver

51 storage portion

51a bottom part

51b bending portion

51c general part

51d inclination changing portion

52 base end portion

53 movable end

54,55 side ends

60 locking mechanism

61 Pin (example first locking part)

61a small diameter portion

61b larger diameter portion

62 hook (example of second locking part)

62a pin portion

62b hook body

A1 range of chip box

AX1 tilting shaft

AX2 rotation shaft

C1 cutting scraps

D1 forward direction

D2 backward direction

D3 upward direction

D4 downward direction

D5 left direction

D6 right direction

H0 horizontal plane

P1 product

PO1 receiving posture

PO2 discharge posture

PO3 Tilt restricting posture

ST1 discharge posture regulating structure

ST 2-inclination limiting structure

W1 is a workpiece.

Claims

1. A lathe, comprising:

a holding section;

a chip receiver having a base end portion connected to the holding portion via a hinge and a movable end portion located on the opposite side of the base end portion, the chip receiver being disposed below the holding portion and tiltable to a receiving position for receiving falling chips and a discharging position below the receiving position; and

When the first locking portion and the second locking portion are unlocked, the chip receiver can be converted into the discharge posture; and is also provided with

The lathe further includes a chip box that receives chips generated by machining a workpiece at a storage position in a machining chamber and is capable of being drawn out of the machining chamber from the storage position; and is also provided with

When the chip box is in a pulled-out state in which the chip box has been pulled out from the storage position and the chip receiver is in the discharge posture, chips fall from the chip receiver to the chip box.

2. The lathe according to claim 1, further comprising a product carrying device that carries out a product obtained by processing a workpiece; and is also provided with

The chip receiver is disposed below a carry-out end of the product conveying device.

3. The lathe of claim 1 wherein said hinge is in a horizontal plane outside the confines of said chip box in said extracted state,

the movable end of the chip receiver in the receiving position is located in the range of the chip box in the extracted state on a horizontal plane, and

the lathe further includes a discharge posture restricting structure that restricts the movable end portion of the chip receiver in the discharge posture to a range of the chip cassette in the extracted state in a horizontal plane.

4. The lathe of claim 2 wherein said hinge is in a horizontal plane, outside the confines of said chip box in said extracted state,

5. The lathe of any one of claims 1 to 4, further comprising a tilt limiting structure that causes a range of tilt of the chip receiver from the receiving position when the chip cassette is in the accommodated position to be smaller than when the chip cassette is in the extracted state.

6. A chip evacuation method of a lathe, wherein the lathe comprises:

a holding section;

a chip receiver having a base end portion connected to the holding portion via a hinge and a movable end portion located on the opposite side of the base end portion, the chip receiver being disposed below the holding portion and tiltable to a receiving position for receiving falling chips and a discharging position below the receiving position;

the chip discharging method includes:

a drawing step of drawing the chip box from the storage position; and

7. The chip discharging method of a lathe according to claim 6, wherein the lathe further comprises a blocking member removably mounted with respect to a chip box passing portion through which the chip box is drawn out of the machining chamber;

the chip discharging method further includes a discharging step of discharging the blocking member from the chip box passing portion, and

in the extracting step, the chip box is brought into the extracted state in which the chip box passing portion from which the blocking member has been removed is extracted from the storage position.