JP3301244B2 - Work chip removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing chips remaining in a hole of a work after cutting such as drilling in an NC machine tool such as a machining center.

[0002]

2. Description of the Related Art After cutting such as drilling, chips may remain in a hole formed in a work. To remove such chips, although not shown, it is not shown in FIG. Chips remaining on the work were removed by injecting pressurized air (Japanese Utility Model Laid-Open No. 1-106112, Japanese Utility Model Laid-Open No. 2-194).
No. 48).

[0003]

In recent years, as a device for performing a cutting process, an NC machine tool such as a machining center for sequentially performing a cutting process on a workpiece by a plurality of rotary tools has been frequently used. It is possible to do.

[0004] However, in order to remove chips as in the prior art, a dedicated device for injecting washing oil or pressurized air to a predetermined position of the work is required, which only leads to an increase in equipment investment. In addition, there is a problem that it is difficult to cope with various kinds of works.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a chip removing device which can reliably remove chips remaining on a workpiece with a simple configuration in an NC machine tool such as a machining center. With the goal.

[0006]

According to a first aspect of the present invention, there is provided a shaft, which protrudes to the inner periphery of a substantially cylindrical body and is rotatably supported, engages with the shaft at the inner periphery of the body. A rotating member capable of being displaced in the axial direction, a member screwed to a screw portion formed on an outer periphery of the rotating member, and both ends of the screw member provided at predetermined positions on an inner periphery of the body. A means for slidingly contacting the surface and holding the same at a predetermined pressure, a displacement regulating member capable of locking the rotating member capable of being displaced in the axial direction at a predetermined position, and a chip fixed to the rotating member and capable of winding chips. A removing member.

According to a second aspect of the present invention, there is provided a first shaft formed of a cylindrical member and rotatably supported on an inner periphery of a hole formed in a body, and means for driving the first shaft. ,
A second shaft supported on the inner periphery of the first shaft and relatively rotatable; rotation regulating means interposed between the second shaft and the body to regulate rotation of the second shaft; A removing member fixed to the first shaft and capable of winding chips, and a fork fixed to the second shaft and capable of inserting chips.

According to a third aspect of the present invention, a first shaft formed of a cylindrical member and rotatably supported by an inner periphery of a hole formed in a body, and a means for driving the first shaft are provided. ,
A second shaft supported on the inner periphery of the first shaft and relatively rotatable; rotation regulating means interposed between the second shaft and the body to regulate rotation of the second shaft; A removing member fixed to the first shaft and capable of winding chips, a fork fixed to the second shaft and through which chips can be inserted, and supported by the fork so as to be displaceable in the axial direction. And means for detecting the position of chips by being driven in the axial direction in accordance with the rotation of the removing member.

In a fourth aspect based on the third aspect, the detecting means is a plate which is inserted into a fork and supported so as to be displaceable only in the axial direction, and which is capable of slidingly contacting the removing member. And a sensor for detecting the position of the plate.

A fifth aspect of the present invention is the third or fourth aspect.
In the invention, the rotation restricting means is constituted by a clutch that permits relative rotation between the body and the second shaft when a torque applied to the second shaft exceeds a predetermined value.

The sixth invention is characterized in that the second to fifth inventions
In any one of the inventions, the fork is formed so as to protrude toward the workpiece from the removing member.

A seventh aspect of the present invention is the first to sixth aspects.
In any one of the inventions, the removing member is formed of a spiral member.

[0013]

According to the first aspect of the present invention, when the outside of a shaft protruding from the inner periphery of the body is connected to a main shaft of a turret such as a machining center and rotated, a rotating member engaged with the shaft and having a removal member fixed thereto is also provided. Rotate. Since the screwing member screwed to the outer periphery of the rotating member is slidably supported at a predetermined position on the inner periphery of the body by the holding means at a predetermined pressure, the rotating member is driven in the axial direction by the screwing member to rotate the shaft. The removing member attached to the rotating member according to the direction can expand and contract from the body and rotate, and according to this displacement, insert the removing member protruding from the body into the hole formed in the work to wind chips. Can be. The rotating member displaced in the axial direction is locked by the displacement restricting member to restrict the axial displacement, while continuing to rotate, so that the screwing member slides against the predetermined pressure applied by the holding means. The idling member is idled together with the rotating member, and the removing member stops the axial displacement at the predetermined position, so that the removing member can maintain the rotation at the extended position or the contracted position protruding from the body by a predetermined amount.

According to a second aspect of the present invention, the cutting member and the fork fixed to the first and second shafts are inserted through holes formed in the work to insert chips, and then the first means is driven by the driving means. When the shaft is rotated, the second shaft supporting the fork is locked by the rotation restricting means, so that the removing member and the fork start relative rotation, and the chips are restricted from rotating by the inserted fork. The fork can be displaced in the first and second axial directions on the fork by the rotation of the removing member capable of winding the chip, and by switching the rotation direction of the driving means, the chip is wound around the hole, and the fork is removed. Chips can be reliably removed from the member.

Further, since the third invention includes the detecting means for displacing the fork in accordance with the rotation of the removing member, it is possible to detect the chip winding position in accordance with the position of the detecting means.

According to a fourth aspect of the present invention, a plate inserted into the fork and displaceable only in the axial direction and slidably in contact with the removing member is displaced on the fork in accordance with the rotation of the removing member. By detecting the position with the sensor, the winding position of the chip can be known.

According to a fifth aspect of the present invention, when an excessive torque is applied to the fork, the clutch interposed between the second shaft and the body allows the rotation of the second shaft. The device can be protected by alleviating the excessive torque.

According to a sixth aspect of the present invention, when the body is displaced toward the hole of the work because the fork protrudes toward the workpiece from the removing member, first, the fork penetrates the chips. The chips are prevented from rotating with the rotation, and the chips can be reliably sent along the fork.

In the seventh invention, since the removing member is formed by a spiral member, when the rotation of the first shaft is started, chips can be sent in accordance with the lead of the spiral member.

[0020]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a body 1 of a chip removing device is mounted on a turret having a spindle of an NC machine tool such as a machining center (not shown). The body 1 has a hole 10 on an inner periphery thereof. Opening 1 at the end
A is formed in a substantially cylindrical shape.

A shaft 2 supported by a bearing 21 via a retainer 22 has one end protruding from the end surface 1B side of the body 1 facing a turret (not shown) to the inner periphery of the hole 10 while the other end of the shaft 1 The end portion is provided with an engaging portion 2A for connecting to a main shaft of a turret (not shown).

A hole 30 of a drive bush 3 as a substantially cylindrical rotating member is slidably contacted on the inner periphery with the outer periphery of the shaft 2 protruding into the hole 10, and the drive bush 3 is axially moved by the shaft 2. Displaceably supported.

A key 7 protrudes from the outer periphery of the shaft 2.
When the key groove 30 </ b> A formed on the inner periphery of the hole 30 of the drive bush 3 engages with the key 7, the drive bush 3 rotates integrally with the shaft 2.

A screw portion 31 having a predetermined length is formed on the outer periphery of the drive bush 3 from the opening 1A side of the body 1, and an end surface 3A on the end surface 1B side of the drive bush 3.
Is formed with a flange portion 3B, and the screw portion 31 is screwed with a nut 4 as a screwing member.

Rings 5, 5 urged by springs 51, 52, respectively, as clamping means are in sliding contact with both end surfaces of the nut 4, and the nut 4 is restricted in axial displacement by the inner periphery of the hole 10. .

The outer circumference of the rings 5 and 5 is in contact with the inner circumference of the hole 10 to restrict the displacement in the radial direction.
Ring 5 slidingly contacting the end face of nut 4 on the opening 1A side of
Is biased in the axial direction toward the end face 1B of the body 1 by a spring 51 supported by the body 1, while the ring 5 sliding on the end face of the nut 4 on the end face 1B side also has the base end. The nut 52 is urged in the axial direction toward the opening 1 </ b> A by the spring 52 supported by the body 1, and the axial displacement of the nut 4 is regulated by the urging forces of the springs 51 and 52 via the rings 5 and 5.

The spring constant of the springs 51 and 52 is such that the ring 5 can regulate the axial displacement of the nut 4 and the nut 4
Are set in advance so as to have a predetermined pressure at which they can slide while sliding on the rings 5 and 5.

A base end of a helical coil spring 6 is coaxially coupled to the end face 3C of the drive bush 3 on the opening 1A side via a sleeve 32 as a removing member. Is supported so as to protrude from the opening 1A.

In FIG. 1, the drive bush 3 is at a maximum extension position where the coil spring 6 protrudes by a predetermined amount from the opening 1 A. At the maximum extension position of the drive bush 3, the flange 3 B is fixed to the inner periphery of the spring 52. When the drive bush 3 is displaced toward the end face 1B while the drive bush 3 is displaced toward the end face 1B, the end face 3A is brought into contact with a retainer 22 as a displacement control member for restricting the maximum contraction position. This position is the maximum contraction position of the coil spring 6.

A plate 15 having a through hole which slides on the outer periphery of the coil spring 6 is provided on the inner periphery of the opening 1A of the body 1, and this plate 15 scrapes off the chips wound around the coil spring 6. This suppresses the chips wound around the coil spring 6 from entering the hole 10 of the body 1.

The configuration is as described above. Next, the operation will be described.

The body 1 of the chip removing device is mounted on a turret provided with a main shaft of a machining center (not shown), and the engaging portion 2A of the shaft 2 is connected to the main shaft (not shown).

Now, assuming that the end face 3A of the drive bush 3 is at the maximum contraction position where it comes into contact with the retainer 22, the free end of the coil spring 6 is accommodated in the inner periphery of the body 1 which does not protrude from the opening 1A.

The turret (not shown) is relatively displaced with respect to the work, and the coil spring 6 is made to face the hole of the work (not shown) which has been punched.

Here, the engaging portion 2A is driven by a main shaft (not shown).
When the clockwise rotation is given to the shaft 2 from the side, the drive bush 3 also rotates clockwise through the key 7 and the key groove 30A.

Since the nut 4 screwed into the screw portion 31 is held at a predetermined position by the rings 5 and 5 and the springs 51 and 52, the drive bush 3 moves the nut 4 of the body 1 with the nut 4 according to the rotation of the screw portion 31. The coil spring 6, which is driven in the axial direction toward the opening 1 </ b> A and whose base end is attached to the drive bush 3 via the sleeve 32, is also displaced in the extension direction (rightward in the drawing) from the body 1 while rotating clockwise. I do.

The free end of the coil spring 6 protruding from the opening 1A of the body 1 is inserted into a hole of a work (not shown), and chips remaining on the inner periphery of the hole are further wound in the extension direction while being wound around the coil spring 6. Displace.

The drive bush 3 is a coil spring 6
, The flange portion 3B provided on the drive bush 3 comes into contact with the thrust bearing 8, and the coil spring 6 is at the maximum extension position.

At this time, since the shaft 2 keeps rotating, the screw portion 31 whose displacement in the axial direction toward the opening 1A is also kept rotating, and the nut 4 moves in accordance with the rotation of the screw portion 31. The nut 4 attempts to displace in the axial direction toward the end surface 1B of the body 1, but the displacement of the body 4 toward the end surface 1B is regulated by the pressure of the spring 52.
The coil spring 6 keeps rotating at a predetermined projecting position while idling while sliding on the coil spring 5.

Since the coil spring 6 that has reached the maximum extension position stops rotating in the axial direction and continues to rotate, the free end of the coil spring 6 is not pressed against the bottom of the hole formed in the work. In addition, only chips can be wound without damaging the work.

The time required for the displacement from the contracted position to the extended position is set in advance according to the number of rotations of the shaft 2 and the length of the threaded portion 31. When the shaft 2 is rotated clockwise for a predetermined time. The coil spring 6 can be displaced in the axial direction from the maximum contraction position to the maximum extension position.

When the main shaft of the turret (not shown) is rotated counterclockwise after the elapse of the predetermined time, the screw portion 31 also rotates counterclockwise, and the drive bush 3 is axially engaged with the nut 4 screwed in the same manner as described above. Driven end surface 1 of body 1
The displacement to the B side, that is, the displacement in the contraction direction is started.

The coil spring 6 includes the drive bush 3
While being rotated counterclockwise with the displacement in the contraction direction, the workpiece is pulled out from the hole of the work (not shown) and housed in the hole 10 of the body 1.

The drive bush 3 displaced in the contraction direction by the counterclockwise rotation of the shaft 2 is restricted in axial displacement at the maximum contraction position where the end face 3A contacts the retainer 22, and the coil spring 6 is connected to the body 1 Is accommodated in the hole portion 10 of the main body.

During the displacement in the contraction direction, the outer periphery of the coil spring 6 is in sliding contact with the inner periphery of the plate 15 provided in the opening 1A of the body 1, and the chips wound around the coil spring 6 are scraped off the plate 15. Therefore, intrusion of chips into the hole 10 can be suppressed.

When the shaft 2 continues to rotate counterclockwise further at the maximum contraction position, the nut 4 is rotated by the counterclockwise rotation of the screw portion 31 in the same manner as the maximum extension position. Trying to displace towards 1A,
Since the displacement in the axial direction is regulated by the pressure of the spring 51, the nut 4 idles while sliding on the rings 5, 5 at a predetermined position in the axial direction, so that the drive bush 3 moves to the position in contact with the retainer 22. Can hold and rotate,
The maximum contraction position can be maintained.

In this way, the drive bush 3 on which the coil spring 6 is fixedly expanded and contracted to the maximum contraction position or the extension position in accordance with the rotation direction of the shaft 2, and then the axial displacement is changed by the retainer 22 or the thrust bearing 8. Although restricted, the nut 4 that imparts an axial displacement to the drive bush 3 can slide on the rings 5, 5 urged by the springs 51, 52, so that the nut 4 can idle.
It is possible to perform the positioning at the maximum contraction position or the extension position only by switching the rotation direction of the shaft 2 without requiring any special control for the axial displacement of It is possible to remove the chips from the hole of the work, and the turret of the machining center (not shown) can reliably remove the chips of the work only by switching from a normal cutting tool to the body 1 of the chip removing device. Since an increase in capital investment can be suppressed and positioning in the axial direction can be performed without requiring special drive control, it can be easily handled by an NC machine tool such as a machining center. Alternatively, by appropriately setting the outer diameter or the length of the screw portion 31, it is possible to cope with various kinds of works. That.

FIGS. 2 and 3 show a second embodiment, particularly a chip removing device capable of reliably removing chips from a bag-shaped work.

In FIG. 2 and FIG. 3, the body 60 supports a rotating shaft 61 as a first shaft formed in a cylindrical shape with a hole 60A formed in the inner periphery by bearings 64 and 65.

The body 60 is mounted on a turret provided with a main shaft of an NC machine tool such as a machining center via a base 70. The body 60 is guided by a slide shaft 71 fixed to the base 70 to rotate the rotary shaft 6.
The body 60 is displaceably supported in the axial direction by a telescopic drive of a rod 72 of a cylinder (not shown).

A fixed shaft 62 as a second shaft is housed on the inner periphery of the rotating shaft 61, and the fixed shaft 62 is disposed coaxially with the rotating shaft 61 via a bush 75, and is relatively rotated. Supported as possible.

The fixed shaft 62 has the left end shown in FIG.
To the outside, and the fixed shaft 6
A clutch 80 is provided as means for restricting the rotation of the clutch 2.

The clutch 80 is interposed between the fixed shaft 62 and the body 60, and the disk 6 coupled to the fixed shaft 62
2 and 62, a disk 63 coupled to the body 60 via a pin 84 is sandwiched.
Is biased by a predetermined pressure by a disc spring 81.

The relative rotation of the fixed shaft 62 with respect to the body 60 is regulated by the frictional force of the disks 62 and 63 according to the pressure of the disc spring 81.

At the end 62A of the fixed shaft 62 on the side facing the work (not shown), forks 63, 63 for penetrating chips are protruded in the axial direction. Here, fork 6
The reference numerals 3 and 63 are arranged at predetermined intervals in the radial direction of the fixed shaft 62 and project substantially parallel to the work at a predetermined length.

On the other hand, a coil spring 6 as a removing member through which chips are inserted and which can be wound is provided at an end 61A of the rotating shaft 61 facing the work (not shown) in an axial direction toward the work. . The coil spring 6 has a predetermined inner diameter capable of accommodating the forks 63, 63 on its inner periphery. The coil spring 6 and the fork 63 are supported at predetermined intervals, respectively.
Is set to a predetermined value shorter than the fork 63, and the forks 63, 63 protrude from the free end of the coil spring 6 facing the work by a predetermined amount.

Here, the fork 63, 63 has a plate 66 which constitutes a detecting means for detecting a winding position of the chip.
Are inserted through the through holes 66A, 66A. The plate 66 is formed of a plate-like member, and while its rotation is regulated by the forks 63, 63, the plate 66 is supported so as to be displaceable in the axial direction, and is formed so as to be engageable with the coil spring 6.

When the coil spring 6 rotates relative to the fork 63, the plate 66 is displaced in the axial direction according to the lead of the coil spring 6.

In order to detect the position of the plate 66, the base end is fixed to the body 60 and the fork 63
Sensors 68 and 69 for detecting the presence or absence or proximity of the plate 66 are fixedly provided at predetermined positions of a bracket 67 disposed in parallel with the sensor 67.
Is disposed at the winding start position, and the sensor 69 is disposed corresponding to the winding end position.

At a predetermined position where the bracket 67 faces the rotating shaft 61, a sensor 7 for detecting the rotating state of the rotating shaft 61 is provided.
The outputs of these sensors 68, 69 and 73 are input to a controller (not shown).

The rotating shaft 61 housed inside the body 60
A gear 86 for meshing with a gear 85 driven by a motor 87 and for deceleration is connected to the end 61B side of
The rotation shaft 61 is driven by the driving of the motor 87, and in the forward rotation of the motor 87, the plate 66 is driven in a direction away from the workpiece, that is, in the left direction in the drawing, while
In the reverse rotation of 7, the plate 66 is driven in the direction toward the work, that is, in the right direction in the drawing.

The configuration is as described above. Next, the operation will be described.

The chip removing device removes chips 91 retained inside the work 90 to the outside when the through-hole 90A is formed in a bag-like work 90 as shown in FIG.

First, the base 70 is driven to displace the rotary shaft 61 to the coaxial position of the through hole 90A, and then the cylinder (not shown) is driven to extend to drive the body 60 toward the work. At this time, the rotation is adjusted in advance so that the plate 66 faces the sensor 68.

The coil spring 6 and the fork 63 projecting from the rotating shaft 61 and the fixed shaft 62 in accordance with the displacement of the body 60 are inserted into the work 90 through the through hole 90A. At this time, the forks 63 projecting from the free end of the coil spring 6 skewing the chips 91 inside the work 90, and when the rod 72 is extended, the chips 91 inserted into the fork 63 Contact free end.

Next, when the motor 87 is rotated forward, the rotating shaft 61 rotates the coil spring 6 in the direction in which the chips 91 are wound, and the chips 9, the rotation of which is restricted by the forks 63, 63.
Since 1 is also inserted into the rotating coil spring 6,
It is sent toward the end 61A of the rotating shaft 61 according to the lead of the coil spring 6, that is, displaced outward from the through hole 90A.

Similarly, the plate 66, whose rotation is restricted by the forks 63, 63 is displaced in accordance with the lead of the coil spring 6, that is, displaced toward the end 61 A of the rotating shaft 61.

When the plate 66 is displaced to a predetermined winding end position, the sensor 69 is turned on, and the plate 66 is displaced to 66A, as shown in FIG. And wound up to a predetermined position toward the end 61A of the rotating shaft 61.

Here, the controller (not shown) stops the motor 87 based on the sensor 69, and when it is confirmed from the output from the sensor 73 that the rotation shaft 61 has stopped, the cylinder (not shown) is driven to contract the rod 72. Then, the fork 63 and the coil spring 6 are
Pull out from 0A.

The chips 91 wound around the fork 63 and the coil spring 6 by this pulling out pass through the through holes 90.
A is discharged to the outside from A, and chips are removed from the bag-shaped work 90.

When the rod 72 contracts to a predetermined position,
The controller (not shown) rotates the motor 87 in the reverse direction, and rotates the plate 66 and the chips 9 by the reverse rotation of the coil spring 6.
1 is displaced toward the free end of the fork 63 to start sending out the chips wound around the fork 63 and the coil spring 6.

By performing the reverse rotation of the motor 87 up to the winding start position of the plate 66 where the sensor 68 is turned on,
While the chips 91 are dropped from the forks 63, 63, the plate 66 can be held by the forks 63, and the chips 91 wrapped around the forks 63 and the coil springs 6.
Can be reliably removed by dropping from the end.

Here, when a large amount of chips are wound around the forks 63, 63, the required torque of the coil spring 6 for feeding the chips and the plate 66 in the axial direction increases, and the rotation of the chips is restricted against this torque. The torque applied to the fork 63 also increases.

The torque applied to the forks 63, 63 is
The power is transmitted to the clutch 80 via the fixed shaft 62 and the fixed shaft 6
When the torque of 2 exceeds a predetermined value, the clutch 80 is released and the relative rotation between the fixed shaft 62 and the body 60 is allowed.
The fork 63 and the fixed shaft 62 start rotating integrally, and it is possible to prevent an excessive torque from being applied to the fork 63 and damaging the device or the work.

In this way, the fork 63 for inserting the chips and restricting the rotation and the coil spring 6 for inserting the chips and sending the chips in the axial direction by the rotation are arranged coaxially, so that the fork 63 stays in the hole of the work. The chips can be reliably wound and discharged to the outside, and the direction in which the chips are fed can be easily controlled in accordance with the forward and reverse rotations of the coil spring 6.
The chip wound around the coil spring 3 and the coil spring 6 can be easily and reliably dropped from the end simply by switching the rotation direction of the coil spring 6, and the automation of chip removal can be promoted, and the rate of automation of machining can be increased. Can be further improved.

Further, since the sensors 68 and 69 for detecting the position of the plate 66 are provided, it is possible to reliably detect the winding and feeding of the chips in accordance with the position of the plate 66. It is possible to minimize the required amount, to shorten the tact time for chip removal and to improve the production efficiency.
3 is provided with a clutch 80 via a fixed shaft 62,
Excessive torque can be prevented from being applied to the fork 63, for example, when excessive chips are wrapped around the fork 63, and damage to the work or the device can be prevented.

Although the coil spring 6 has been disclosed as a removing member in the above-described embodiment, the present invention is not limited to this. Although not shown, a chip such as a wire brush or the like can be attached with chips according to the material of the chip or the like. What is necessary is just to apply a removal member.

[0079]

As described above, according to the first aspect of the present invention, the rotation member having the removal member fixedly expands and contracts to the maximum contraction position or the extension position in accordance with the rotation direction of the shaft, and then is displaced in the axial direction by the displacement regulating member. However, the screwing member that imparts the axial displacement to the rotating member can slide in contact with the holding means, and does not require any special control on the axial displacement of the removing member. Positioning at the maximum contraction position or extension position can be performed by simply switching the rotation direction, chips can be removed from a preset hole of the work, and a turret of a machining center (not shown) can be used to cut chips from a normal cutting tool. By simply switching to the removal device, it is possible to reliably remove chips from the workpiece, thereby suppressing an increase in capital investment and performing axial positioning without requiring special drive control. Not only can it be easily handled by NC machine tools such as machining centers, but also it can handle various types of workpieces by appropriately setting the total length or outer diameter of the removing member or the length of the screw portion of the rotating member. it can.

Further, according to the second aspect of the present invention, it is possible to wind chips around the fork or to remove the chips from the fork in accordance with the forward or reverse rotation of the driving means, thereby easily and surely controlling the feed direction of the chips. This makes it possible to promote the automation of chip removal and further improve the automation rate of machining.

In the third aspect of the present invention, since the detecting means for displacing on the fork in accordance with the rotation of the removing member is provided, the winding position of the chips can be easily detected in accordance with the position of the detecting means. The operation of the driving means can be minimized, so that the tact time of the chip removing step can be shortened and the productivity can be improved.

Further, according to the fourth aspect of the invention, it is possible to detect the position where the chips are wound based on the position of the plate inserted into the fork, and it is possible to minimize the operation of the driving means. In addition, the cycle time of the chip removing step can be shortened, and the productivity can be improved.

Further, in the fifth invention, when an excessive torque is applied to the fork, the clutch interposed between the second shaft and the body allows the rotation of the second shaft. Thus, the device can be protected by relaxing a large torque, and the durability and reliability of the device can be improved.

According to the sixth aspect of the present invention, since the fork protrudes toward the work from the removing member, chips can be reliably inserted with the fork, and processing defects can be suppressed. Reliability can be improved.

According to the seventh aspect of the present invention, since the removing member is formed of a spiral member, it is possible to reliably feed chips and plates inserted through the fork while having a simple structure, and to reduce the manufacturing cost of the apparatus. Reduction can be promoted.

[Brief description of the drawings]

FIG. 1 is a sectional view of a chip removing device showing an embodiment of the present invention.

FIG. 2 is a sectional view of a chip removing device according to a second embodiment.

FIG. 3 is an enlarged sectional view of the chip removing device.

FIG. 4 is an explanatory view showing a bag-shaped work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Shaft 3 Drive bush 4 Nut 5 Ring 6 Coil spring 8 Thrust bearing 10 Hole 22 Retainer 31 Screw 51, 52 Spring 60 Body 60A Hole 61 Rotating shaft 62 Fixed shaft 63 Fork 66 Plate 68 Sensor 69 Sensor 80 Clutch 87 motor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B23Q 11/00 B23B 47/34

Claims (7)

(57) [Claims] 1. A shaft protruding to the inner periphery of a substantially cylindrical body and rotatably supported, and a rotating member engaged with the shaft at the inner periphery of the body and displaceable in the axial direction. A member which is screwed into a screw portion formed on the outer periphery of the rotating member, and which is disposed at a predetermined position on the inner periphery of the body, slides on both end surfaces of the screwing member, and is held at a predetermined pressure. Means, a displacement regulating member capable of locking the rotating member displaceable in the axial direction at a predetermined position, and a removing member fixed to the rotating member and capable of winding chips. Chip removal equipment for workpieces. 2. A first shaft, which is rotatably supported by an inner periphery of a hole formed in a body and is formed by a cylindrical member, means for driving the first shaft, and the first shaft. A second shaft supported on the inner periphery of the second shaft and capable of relative rotation; rotation regulating means interposed between the second shaft and the body to regulate rotation of the second shaft; A chip removing device for a workpiece, comprising: a removing member fixed to a shaft and capable of winding chips, and a fork fixed to the second shaft and capable of inserting chips. 3. A first shaft rotatably supported by an inner periphery of a hole formed in the body and formed of a cylindrical member, means for driving the first shaft, and the first shaft. A second shaft supported on the inner periphery of the second shaft and capable of relative rotation; rotation regulating means interposed between the second shaft and the body to regulate rotation of the second shaft; A removing member fixed to the shaft and capable of winding chips, a fork fixed to the second shaft and allowing the passage of chips, supported by the fork so as to be displaceable in the axial direction, and the removing member Means for detecting the position of a chip driven in the axial direction in accordance with the rotation of the workpiece. 4. The detecting means comprises a plate inserted through a fork and supported so as to be displaceable only in the axial direction and slidably contacting the removing member, and a sensor for detecting the position of the plate. 4. The method according to claim 3, wherein
A chip removing device for a workpiece according to item 1. 5. The rotation restricting means is constituted by a clutch that permits relative rotation between the body and the second shaft when a torque applied to the second shaft exceeds a predetermined value. The chip removing device for a workpiece according to any one of claims 2 to 4. 6. The device for removing chips from a workpiece according to claim 2, wherein the fork is formed so as to project from the removing member toward the workpiece. 7. The device for removing chips from a workpiece according to claim 1, wherein the removing member is formed of a spiral member.