JP2013166213A - Chamfering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamfering device in which cycle time for chamfering can be shorten.SOLUTION: A device includes a conveying part 12 conveying a workpiece W in a direction crossing an axis of the workpiece W, and a grinding part 13 arranged at a position to contact the workpiece W to be conveyed by the conveying part 12, having a grinding surface 41a along a conveying direction F of the conveying part 12. The conveying part 12 includes a plurality of screw shafts 31 arranged along the conveying direction F. The plurality of the screw shafts 31 have spiral grooves 31a in the same spiral direction with each other and can be respectively driven in a rotational manner in the same direction. While the workpiece W is arranged over the spiral grooves 31a of the plurality of the screw shafts 31 driven in the rotational manner and conveyed, an edge part on one end side of the workpiece W is chamfered by the grinding part 13.

Description

  The present invention relates to a chamfering apparatus that performs chamfering while conveying a workpiece.

2. Description of the Related Art Conventionally, an apparatus that performs chamfering by relatively moving a workpiece and a grinding part is known.
For example, Patent Document 1 proposes an apparatus capable of chamfering an end surface portion without fixing a workpiece to a processing apparatus such as a lathe.

  In Patent Document 1, a turning device that rotatably supports a bar in the circumferential direction, a bar rotating device that rotates a bar placed on the turning device in the circumferential direction, and an end face corner of the bar A chamfering device is constituted by a cutting device provided with a rotating grindstone capable of advancing and retreating at a predetermined chamfering angle.

In this apparatus, a workpiece can be rotatably mounted on a turning device, and a chamfering process can be performed by contacting a rotating grindstone of a cutting device with an end surface portion of the workpiece while rotating the workpiece by a bar rotating device.
Furthermore, a powered conveyor that can load and unload workpieces is provided in the chamfering device. The workpiece is moved in the axial direction by the powered conveyor, loaded into the chamfering device, chamfered, and further processed by the powered conveyor. Can be carried out.

  In such a chamfering device, it is possible to chamfer the end surface without fixing the workpiece to the processing device, and it is possible to perform chamfering with a simple operation even if the workpiece diameter changes. Yes.

JP 2003-136382 A

However, in the conventional chamfering apparatus, the chamfering process is performed by positioning and arranging each work and relatively moving the work and the processing apparatus.
For this reason, when machining multiple workpieces, the workpiece must be transported and positioned for each workpiece, and the workpiece and the processing device must be moved relative to each workpiece. The cycle time when processing was long.

  Accordingly, an object of the present invention is to provide a chamfering apparatus that can shorten the cycle time of chamfering.

  The chamfering device of the present invention that achieves the above object is disposed at a position where it comes into contact with a conveying portion that conveys the workpiece in a direction intersecting the axis of the workpiece, and an edge on one end side of the workpiece conveyed by the conveying portion, A grinding unit having a grinding surface along the conveyance direction of the conveyance unit, and the conveyance unit includes a plurality of screw shafts arranged along the conveyance direction, and the plurality of screw shafts are spiral grooves in the same spiral direction. The workpiece is disposed across the spiral grooves of the plurality of rotationally driven screw shafts while being conveyed, and the edge on one end side of the workpiece is ground. Is to be chamfered.

  In this chamfering device, the conveying portion slides on the side surface of the workpiece from the side opposite to the spiral groove of the plurality of screw shafts and the end guide portion arranged along the conveying direction so that one end portion of the workpiece is in sliding contact. And a side surface guide part arranged along the conveying direction so as to be in contact with each other, and the grinding surface of the grinding part should be able to contact a workpiece slidably in contact with the end part guide part.

In this chamfering device, the workpiece has an outer surface with a substantially circular cross-section perpendicular to the axis, and the grinding portion rotates while rotating the workpiece by pressing the grinding surface toward the side guide portion with respect to the workpiece. It is preferable to grind.
In that case, it is preferable that the grinding surface is longer than the circumference of the workpiece.
Further, in this chamfering apparatus, it is preferable that the grinding surface of the grinding portion is composed of a side peripheral surface of a rotating body that rotates about a rotation axis.

  In this chamfering apparatus, a first section for chamfering the first end of the workpiece and a second section for chamfering the second end of the workpiece are provided, and the first section and the second section are respectively as described above. You may provide an appropriate conveyance part and a grinding part.

According to the present invention, since the grinding part has the grinding surface along the conveyance direction at the position where the grinding part comes into contact with the workpiece edge, the workpiece edge can be ground by the grinding surface while conveying the workpiece. In addition, since the conveying unit has a plurality of screw shafts that have the same spiral direction and are driven to rotate in the same direction, the workpiece is disposed across the spiral grooves of the plurality of screw shafts. , The workpiece can be conveyed in the conveying direction by the spiral groove, and can be pressurized to the grinding part side by rotation of the peripheral surface of each screw shaft. Therefore, it is possible to reliably chamfer the workpiece end while conveying the workpiece.
As a result, each workpiece can be easily chamfered by conveying a plurality of workpieces continuously in the conveying direction by the conveying section, and there is no need to adjust the relative position between the workpiece and the grinding surface for each workpiece. . Therefore, when chamfering a plurality of workpieces, a setup operation for changing the relative position between the grinding part and the workpiece for each workpiece is unnecessary, and the cycle time of the chamfering processing can be greatly shortened.

1 is a schematic plan view of a chamfering apparatus according to a first embodiment of the present invention. It is a schematic front view of the chamfering apparatus which concerns on 1st Embodiment of this invention. It is a figure explaining the principal part of the conveyance part and grinding part of the chamfering apparatus which concerns on 1st Embodiment of this invention. It is a schematic plan view of the chamfering device concerning a 2nd embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment is an example of a yarn chamfering device for a workpiece.

[First Embodiment]
The workpiece to be processed is made of a hard material such as metal. The shape of the workpiece is not particularly limited, but can be easily transported and processed if it has a linear axis and has a constant cross-sectional shape in the longitudinal direction, especially if the outer surface has a substantially circular cross-section, such as a rod or tube. It is suitable.

  A chamfering apparatus 10 according to the present embodiment that performs thread chamfering on the peripheral edge of the workpiece as described above includes a supply unit 11 that supplies a plurality of workpieces W one by one, and a supply unit 11, as shown in FIGS. 1 and 2. A transport unit 12 that transports the supplied workpiece W while holding the workpiece W in a predetermined direction and position, a grinding unit 13 that chamfers the workpiece W transported by the transport unit 12, and discharges the chamfered workpiece W. And a discharge unit 14.

  As shown in FIGS. 1 and 2, the supply unit 11 includes a plurality of supply rails 21 that have a moving surface 21 a that is inclined downward toward the transport unit 12 and that are arranged substantially parallel to each other. A supply stopper 22 that opens and closes by moving up and down from the moving surface 21 a of the rail 21, and a supply guide 23 whose lower end side is swingable so as to guide the workpiece W from the supply rail 21 to the conveyance unit 12 are provided. . In the supply unit 11, the workpiece W is supplied to the conveyance unit 12 one by one by opening and closing the supply stopper 22.

As shown in FIGS. 1 and 2, the transport unit 12 transports the workpiece W in a transport direction F that intersects the axis, and includes a transport device having an alignment function.
As shown in FIGS. 1 and 2, this conveying device includes a plurality of screw shafts 31 arranged in parallel to each other along the conveying direction F and having spiral grooves 31 a formed on the side peripheral surface, and a plurality of screw shafts 31. A conveying drive unit 32 that rotates, an end guide unit 33 that is arranged along a conveying direction F at a lateral position of the plurality of screw shafts 31 and abuts one end of the workpiece W, and each screw shaft 31 The first side surface guide portion 35 that is spaced apart from the spiral groove 31a and disposed along the transport direction F, and in the vicinity of the end guide portion 33, is spaced from the spiral grooves 31a of the plurality of screw shafts 31 in the transport direction F. 2nd side guide part 37 arranged along.

  As shown in FIGS. 1 and 2, each of the plurality of screw shafts 31 has a spiral groove 31 a that accommodates at least a part, preferably all, of the cross-sectional shape of the workpiece W and supports the workpiece W on each side peripheral surface. The spiral grooves 31a of the screw shafts 31 are preferably provided at the same pitch in the same spiral direction, and in this embodiment, all the screw shafts 31 have the same shape. In the screw shaft 31, the workpiece W is arranged over the plurality of screw shafts 31, and each screw shaft 31 rotates in one direction, thereby pressing each workpiece W in the axial direction, and the spiral groove 31 a. Thus, the workpiece W is pressed in the transport direction F.

  As shown in FIGS. 2 and 3, the transport drive unit 32 is configured to rotationally drive a plurality of screw shafts 31 by a drive belt 32 a. In this embodiment, the conveyance drive unit 32 can drive all the screw shafts 31 to rotate in the same direction at the same speed. In the conveyance drive unit 32, the rotation speed of each screw shaft 31 can be adjusted, and the conveyance speed of the workpiece W can be adjusted by adjusting the rotation speed.

  As shown in FIGS. 1 and 3, the end guide portion 33 is disposed between the plurality of screw shafts 31 and the grinding portion 13 and extends along the conveying direction, and the end contact plate 33 a and the frame 15. And an end support portion 33b that is attached to a portion (not shown) and supports the end contact plate 33a at a predetermined position. In the end guide portion 33, one end portion of the workpiece W is slidably contacted with the end portion contact plate 33a, so that the one end portion of the workpiece W can be held at a predetermined position. Here, since the end contact plate 33a contacts the upper part in a state where the lower part of the end of each work W is released, the lower part of the end of the work W can be processed.

As shown in FIGS. 2 and 3, the first side surface guide portion 35 is attached to an upper contact plate 35 a extending along the transport direction F and a portion (not shown) of the frame 15 to move the upper contact plate 35 a up and down. An upper support portion 35b that supports the upper support portion 35b and an upper urging body 35c such as a pressing spring that is attached to the upper support portion 35b and urges the upper contact plate 35a downward.
In the first side guide portion 35, the upper contact plate 35a is slidably brought into contact with the upper portion of the side peripheral surface of the workpiece W from the side opposite to the spiral grooves 31a of the plurality of screw shafts 31, and is attached downward by the upper biasing body 35c. Guide the work W. Thereby, the workpiece | work W arrange | positioned on the some screw shaft 31 is supported so that it may not remove | deviate from the spiral groove 31a.

As shown in FIGS. 1 and 3, the second side surface guide portion 37 is attached to an upper contact plate 37 a extending along the transport direction F and a portion (not shown) of the frame 15 so that the upper contact plate 37 a is placed at a predetermined position. And an upper support portion 37b to be supported.
In the second side surface guide portion 37, the upper contact plate 37 a guides the workpiece W by slidingly contacting the upper portion of the side circumferential surface of the workpiece W from the side opposite to the spiral grooves 31 a of the plurality of screw shafts 31. This supports the pressure applied to the workpiece W during chamfering.

As shown in FIG. 3, the grinding unit 13 includes a grinding member 41 having a grinding surface 41 a, a support mechanism 42 that supports the grinding member 41 so as to be detachable from the workpiece W, and a grinding member that drives the grinding member 41. And a drive unit 43.
The grinding member 41 is a member having a grinding surface 41 a that can be chamfered by being brought into contact with the end portion of the workpiece W. The grinding surface 41 a is arranged along the transport direction F. In the present embodiment, a grindstone having a rotating body shape such as a column, a cone, or a truncated cone rotating around the rotation axis L is used as the grinding member 41, and the grinding surface 41a is composed of a side peripheral surface of the rotating body.

The grinding surface 41 a of the grinding member 41 is adjacent to the side of the transport unit 12 and is disposed along the transport direction F of the workpiece W. The grinding surface 41a is formed at a distance longer than the circumferential length of the workpiece W, and in the case of the rolling workpiece W, the grinding surface 41a can be brought into contact with the entire circumference of the end portion and processed.
If this grindstone is cylindrical, the peripheral speed of the grinding surface 41a of the grinding part 13 can be made uniform in the direction along the rotation axis L, and the workpiece W can be uniformly chamfered on the entire grinding surface 41a.
The grinding drive unit 43 is configured so that the grinding member 41 can be driven to rotate about the rotation axis L, and the rotation axis L is arranged substantially parallel to the transport direction F.

  The support mechanism 42 arranges the grinding member 41 so that the grinding surface 41a faces diagonally below one end of the workpiece W, and lifts and lowers the bearing portion 42a that rotatably supports the grinding member 41 by the screw shaft 42b. Thus, the grinding surface 41a can be moved up and down obliquely with respect to the axis of the workpiece W. Here, when the grinding member 41 is advanced by the support mechanism 42, the grinding surface 41a is moved upward toward the side guide portions 35 and 37, and pressed against the end of the workpiece W from below. it can.

  The grinding drive unit 43 is configured to be capable of rotationally driving the grinding member 41 supported by the support mechanism 42. In the present embodiment, the grinding drive unit 43 rotationally drives the grinding member 41 in a direction in which the workpiece W of the grinding surface 41a abuts on the workpiece W in an extending direction of the axis of the workpiece W, in other words, a direction in which the workpiece W is drawn.

  As shown in FIG. 1 and FIG. 2, the discharge unit 14 includes a plurality of discharge rails 51 having a downwardly inclined moving surface 51 a at the top and arranged substantially parallel to each other. Here, when the workpiece W is transferred from the conveying section 12, the workpiece W is unloaded to the subsequent process side.

Next, operation | movement of such a chamfering apparatus 10 is demonstrated.
First, the workpiece W is supplied from the supply unit 11 to the transport unit 12. In the supply unit 11, workpieces W are sequentially supplied on a plurality of supply rails 21 by a feeder or the like (not shown) in a direction perpendicular to the axis, and roll on the moving surface 21 a by gravity and move toward the transport unit 12. At that time, the supply stopper 22 opens and closes based on a detection signal from a sensor or the like (not shown), so that the workpiece W moves one by one to the lower end side of the supply rail 21 and comes into contact with the supply guide 23 from the lower side. One by one is placed on the plurality of screw shafts 31 of the transport unit 12.

  In the transport unit 12, each work W is placed across the spiral grooves 31 a of the plurality of screw shafts 31 with the axis of the work W being in a direction substantially orthogonal to the transport direction F. At this time, each workpiece W may be placed at a position separated from the grinding part 13 in the axial direction of the workpiece W.

The plurality of screw shafts 31 are rotationally driven by the conveyance drive unit 32, and the workpiece W arranged across the spiral grooves 31 a of the plurality of screw shafts 31 has the same circumferential direction on each screw shaft 31. Therefore, the workpiece W is pressed toward one end side of the workpiece W, specifically toward the grinding portion 13 side, and moves in the rotation direction of the screw shaft 31.
As a result, each workpiece W is brought into a state where one end portion is in sliding contact with the end guide portion 33 and pressed in the axial direction, and each workpiece W is held in a predetermined position in the axial direction. At this time, the workpieces W are supported by the first and second side surface guide portions 35 and 37 from the upper side opposite to the spiral grooves 31 a of the plurality of screw shafts 31.

At the same time, the workpieces W are moved in the transport direction F by being pressed from behind by the spiral grooves 31 a of the screw shafts 31. At this time, since the first side surface guide portion 35 is biased toward the spiral groove 31a from above, each workpiece W is prevented from being detached from the spiral groove 31a.
As a result, as shown in FIG. 3, one end portion of the workpiece W is in sliding contact with the end guide portion 33 so that the axial position is maintained at a predetermined position and is supported by each spiral groove 31a. The workpiece W is transported in the transport direction F at a predetermined speed based on the rotational speed of each screw shaft 31 in a state where the direction of the workpiece W is maintained in a predetermined direction.

In the grinding unit 13, a chamfering process is performed on the end portion of the workpiece W conveyed in the conveyance direction F while maintaining a predetermined position and orientation by the conveyance unit 12.
In a state where the grinding member 41 is rotated by the grinding drive unit 43, the grinding surface 41 a is pressed against the lower end at one end of the workpiece W by the support mechanism 42. The workpiece W is pressurized toward the side guide portions 35 and 37, and this applied pressure is supported by the second side guide portion 37. Thus, the chamfering process is performed by being pressed against the edge portion at one end portion of the workpiece W with a sufficient pressure while the grinding surface 41a is rotated.

At this time, the grinding surface 41 a of the grinding member 41 is pressed against the end portion of the workpiece W from the diagonally lower side to the upper side of the workpiece W by the support mechanism 42, whereby an upward pressure is applied to the workpiece W. Then, since the side surface on the end side of the workpiece W is slidably supported by the second side surface guide portion 37, the grinding surface 41 a can contact the workpiece W with sufficient pressure. At the same time, since the grinding member 41 is rotated in the direction in which the workpiece W is pulled in, it is possible to prevent the workpiece W from moving to the other end side when the workpiece W is chamfered. As a result, the edge of the end face can be reliably ground.
Further, since the grinding surface 41a rotates in the direction in which the end portion of the workpiece W is drawn, the grinding member 41 is driven to rotate, so that the workpiece W is prevented from being separated from the grinding member 41.

Furthermore, since the workpiece W is pressed against the second side surface guide portion 37 by the pressure applied from the grinding surface 41a during this grinding, the second resistance is greater than the sliding resistance between the spiral grooves 31a of the plurality of screw shafts 31 and the workpiece W. The sliding resistance between the side guide portion 37 and the workpiece W increases. Therefore, the workpiece W moves in the transport direction while rolling by the frictional force with the second side surface guide portion 37. As a result, when the workpiece W moves in the transport direction F, the workpiece W rotates, and the peripheral edge of the end portion rotates and sequentially comes into contact with the grinding surface 41a of the grinding member 41, and the peripheral edge of the end portion of the workpiece W is sequentially chamfered. Processed.
In this embodiment, since the length of the grinding surface 41a of the grinding member 41 in the conveying direction is designed to be longer than the circumferential length of the workpiece W, the chamfering process is performed on the entire circumference of the edge of the workpiece W. Applied.

  In this way, the chamfering process is completed when the sheet is conveyed to the conveyance end position by the conveyance unit. And the workpiece | work W after a chamfering process automatically transfers to the some discharge rail 51 of the discharge part 14, and flows down to a post process. Thereby, the thread chamfering around one end surface of the workpiece W is completed.

The effect in the chamfering apparatus 10 of this embodiment as mentioned above is demonstrated.
According to the chamfering apparatus 10 of the present embodiment, since the grinding part 13 has the grinding surface 41a along the transport direction F at a position where the grinding part 13 contacts the end of the work W, the grinding surface 41a conveys the work W while transporting the work W. The edge can be ground. Moreover, since the conveyance part 12 has the helical groove | channel 31a of the mutually same spiral direction and has the several screw shaft 31 rotationally driven in the same direction, the workpiece | work W straddles the helical groove | channel 31a of the several screw shaft 31. If it arrange | positions and each screw shaft 31 is rotationally driven, while the workpiece | work W can be conveyed in the conveyance direction F by the spiral groove 31a, it can pressurize to the grinding part 13 side by rotation of the surrounding surface of each screw shaft 31. Therefore, it is possible to reliably chamfer the end portion of the workpiece W while conveying the workpiece W.

  As a result, each workpiece W can be easily chamfered by continuously transporting a plurality of workpieces W in the transport direction F by the transport unit 12, and the relative relationship between the workpiece W and the grinding surface 31a for each workpiece W. There is no need to adjust the position. Therefore, when chamfering a plurality of workpieces W, there is no need for a setup operation for changing the relative position of the grinding part 13 and the workpiece W for each workpiece W, and the cycle time of the chamfering processing can be greatly shortened. is there.

  In the chamfering apparatus 10, the transport unit 12 has an end guide part 33 that makes one end of the workpiece W abut. For this reason, the work W is pressurized toward the chamfering device 10 by the plurality of screw shafts 31, so that one end of the work W can be easily aligned and conveyed. And since the grinding surface of the grinding part 13 is adjacently arranged on the side of the conveyance part 12 and can contact with the workpiece W that is in contact with the end guide part 33, one end side while conveying the workpiece W A desired amount of chamfering can be easily performed.

  Here, the transport unit 12 includes side guide portions 35 and 37 that are spaced apart from the spiral grooves 31a of the plurality of screw shafts 31 and are disposed along the transport direction F. The screw shaft 31 is in sliding contact with the side surface of the workpiece W from the side opposite to the spiral groove 31a. Therefore, it is possible to prevent the workpiece W from coming off the spiral groove 31a of each screw shaft 31 by the side guide portions 35 and 37, and the workpiece W can be stably conveyed and pressurized.

  Further, the grinding part 13 grinds the workpiece W having a circular cross section while pressing the grinding surface 41 a toward the side guide parts 35, 37. Therefore, when the workpiece W is moved in the conveyance direction F by the conveyance unit 12, the sliding resistance between the workpiece W and the side surface guide portions 35 and 37 becomes larger than the sliding resistance between the workpiece W and the spiral groove 31a. Rotates around the axis. Therefore, the periphery of the workpiece W can be chamfered without providing means for rotationally driving the workpiece W, and the configuration of the chamfering device 10 for grinding the periphery of the workpiece W having a circular cross section can be simplified. .

  In this chamfering device 10, the grinding surface 41 a of the grinding part 13 is composed of a side peripheral surface of a rotating body that rotates about the rotation axis L, and the grinding surface 41 a pressurizes the workpiece W toward the side guide parts 35 and 37. It is designed to rotate in the direction. Therefore, the workpiece W can be rotated more reliably around the axis, and the periphery of the workpiece W can be chamfered more reliably.

  Further, since the grinding surface 41a of the grinding part 13 is provided longer than the circumferential length of the workpiece W, it is possible to reliably grind the circumference of the workpiece W one or more times during chamfering, and chamfer the entire circumference of the workpiece W. It is possible to process.

[Second Embodiment]
FIG. 4 shows a chamfering device 60 of this embodiment.
In the chamfering device 60, a first section 61 that chamfers the first end W1 of the workpiece W and a second section 62 that chamfers the second end W2 of the workpiece W are continuous along the transport direction F. Others are the same as in the first embodiment.

The first section 61 is provided with a transport unit 12 and a grinding unit 13 having the same configuration as that of the first embodiment.
The second section 62 is the same as the first embodiment except that the rotation direction of the plurality of screw shafts 31 and the spiral direction of the spiral groove 31a provided in each screw shaft 31 are opposite to the first section 61. A transport unit 12 having the same configuration is provided. Moreover, the grinding | polishing part 13 which has the same structure as 1st Embodiment except arrangement | positioning becoming selfish is provided.

In such a chamfering device 60, when the workpiece W is supplied from the supply unit 11 to the conveying unit 12 of the first section 61, the chamfering process of the first end W1 of the workpiece W is performed in the same manner as in the first embodiment. Is called.
After that, when the workpiece W is supplied to the transport unit 12 of the second section 62, the rotation direction of the screw shaft 31 and the spiral direction of the spiral groove 31a are opposite to the first section 61, so that the workpiece W is in the second section. 62 moves to the grinding part 13 side, and the second end W2 of the workpiece W is conveyed in the conveying direction F while being pressed toward the grinding part 13 side. Then, the chamfering process of the second end W2 of the workpiece W is performed in the same manner as in the first embodiment during the conveyance.

After each chamfering is performed by the first section 61 and the second section 62, the workpiece W is transferred to the plurality of discharge rails 51 of the discharge unit 14 and flows down to the subsequent process.
Thereby, the thread chamfering around both end faces of the workpiece W is completed.

  According to the chamfering device 60 of the second embodiment as described above, in addition to obtaining the same operational effects as those of the first embodiment, the workpiece W only passes through the chamfering device 60 once, and both end surfaces are surrounded. Therefore, the time required for chamfering can be further shortened.

The first and second embodiments can be appropriately changed within the scope of the present invention. For example, in each of the embodiments described above, the chamfering device of the present invention is applied to a device that performs chamfering on the periphery of the end surface of the workpiece W. However, the present invention can be applied even to C chamfering. The side surface may be ground instead of the periphery of the end surface of the workpiece W or together with the end surface of the workpiece W.
In each of the above embodiments, the workpiece W having a circular cross-sectional shape in the direction intersecting the axis is processed, but a workpiece having a non-circular cross-sectional shape may be used. In that case, the workpiece may be slid and moved in the conveyance direction F without being rotated by the conveyance unit 12.

  In each of the above-described embodiments, the configuration in which each screw shaft 31 is rotationally driven by one conveying drive unit 32 has been described. However, a plurality of screw shafts 31 are separately provided for each one or a plurality of units using a plurality of drive units. It can also be driven to rotate by the drive unit. In that case, a plurality of screw shafts 31 having different pitches of the spiral grooves 31a may be rotated at different rotational speeds for each part.

  In each of the above embodiments, the example in which the workpiece W is transported in the direction orthogonal to the axis has been described. However, it is possible to perform chamfering by transporting the workpiece in an oblique direction with respect to the transport direction F. It is.

  In the second embodiment, the example in which the first section 61 and the second section 62 each including the transport unit 12 and the grinding unit 13 are provided in one chamfering device 60 has been described. However, as in the first embodiment, By using a plurality of chamfering devices 10, chamfering processing may be performed on the peripheral edges of both end surfaces. In that case, although the first section 61 and the second section 62 are opposed to each other in the above-described embodiment, a plurality of chamfering devices 10 having the same configuration are arranged, and the direction of the workpiece W is reversed between the chamfering devices 10. It is also possible to adopt a configuration in which it is inverted.

W Work W1 First end W2 Second end F Conveying direction L Rotation axis 10 Chamfering device 11 Supply unit 12 Conveying unit 13 Grinding unit 14 Discharge unit 15 Frame 21a Moving surface 21 Supply rail 22 Supply stopper 23 Supply guide 31 Screw shaft 31a Spiral groove 32 Conveyance drive unit 32a Drive belt 33 End guide unit 33a End contact plate 33b End support unit 35 First side guide unit 35a Upper contact plate 35b Upper support unit 35c Upper biasing body 37 Second Side guide portion 37a Upper contact plate 37b Upper support portion 41 Grinding member 41a Grinding surface 42 Support mechanism 42a Bearing portion 42b Screw shaft 43 Grinding drive portion 51 Discharge rail 51a Moving surface 60 Chamfering device 61 First section 62 Second section

Claims (6)

Grinding along the conveying direction of the conveying unit, which is arranged at a position where the conveying unit conveys the workpiece in a direction crossing the axis of the workpiece, and an edge on one end side of the workpiece conveyed by the conveying unit. A grinding part having a surface,
The transport unit includes a plurality of screw shafts arranged along the transport direction, and the plurality of screw shafts have spiral grooves in the same spiral direction and can be driven to rotate in the same direction.
A chamfering apparatus in which the edge of one end side of the workpiece is chamfered by the grinding portion while the workpiece is arranged and conveyed across the spiral grooves of the plurality of screw shafts that are rotationally driven. The conveying portion is arranged on the side surface of the workpiece from the side opposite to the end guide portion arranged along the conveying direction so that one end portion of the workpiece is in sliding contact with the spiral grooves of the plurality of screw shafts. A side guide portion disposed along the conveying direction so as to be in sliding contact with
The chamfering device according to claim 1, wherein a grinding surface of the grinding part is capable of contacting the workpiece slidably in contact with the end guide part. The workpiece has an outer surface having a substantially circular cross-sectional shape perpendicular to the axis,
The chamfering device according to claim 2, wherein the grinding unit grinds the workpiece while rotating the workpiece by pressing the grinding surface toward the side guide portion.   The chamfering device according to claim 3, wherein the grinding surface is provided longer than a circumferential length of the workpiece.   The chamfering device according to any one of claims 1 to 4, wherein the grinding surface of the grinding part is formed of a side peripheral surface of a rotating body that rotates about a rotation axis. A first section that chamfers the first end of the workpiece and a second section that chamfers the second end of the workpiece;
The chamfering device according to claim 1, wherein each of the first section and the second section includes the conveyance unit and the grinding unit.

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