JP2007061950A - Chamfering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chamfering device capable of speeding up and automatizing chamfering operation with a comparatively simple configuration and improving chamfering accuracy. <P>SOLUTION: A grinding wheel 16 is set at the initial position, and then the grinding wheel 16 is rotated around the central axis by an air router 12, while the air router 12 is moved in the Y axis direction. The corner part adjacent to a ring gear 32 is simultaneously chamfered by the grinding wheel 16. The corner part can be automatically chamfered by the grinding wheel 16 without using worker's hand in this way. As the result, the chamfering accuracy for the corner part can be stabilized without being affected by a worker's degree of skill or technical skill level. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chamfering device suitable for chamfering a gear such as a ring gear.

Conventionally, gear teeth such as ring gears have sharp corners, and the corners are chamfered. That is, as shown in FIG. 10, the operator holds the router 102 with the cutting unit 100 attached to the tip, and rotates the cutting unit 100 around the central axis so that the cutting unit 100 is moved to the teeth 104. The chamfering operation of the tooth 100 has been performed by tracing the corner portion along the corner portion of the abutment tooth 104.
U.S. Pat. No. 4,303,359

  By the way, the tooth has a corner on the convex side and a corner on the concave side. However, in the conventional chamfering operation, the chamfer on the corner on the convex side of one tooth and the chamfer on the corner on the concave side. Was said separately. For this reason, there is a problem that a lot of time is required for the chamfering operation.

  Further, since the conventional chamfering work is performed manually, there is a problem that the chamfering accuracy differs depending on the skill level or skill level of the operator.

  Further, although it is conceivable to automate the chamfering operation of the tooth corners by a machine or the like instead of the manual operation of the operator, there is a problem that the equipment becomes complicated and the equipment cost is greatly increased.

  In view of the above circumstances, an object of the present invention is to provide a chamfering device that can speed up and automate chamfering operations with a relatively simple configuration and can improve chamfering accuracy.

  The invention according to claim 1 is a chamfering device for chamfering a corner portion of a workpiece, wherein the cone portion is in contact with the adjacent corner portion of the workpiece and simultaneously chamfers the adjacent corner portion. A cutting support means, a rotation support means for supporting the cutting means and rotating the cutting means about a central axis, and a first support for moving the rotation support means so that the cutting means follows the cutting surface of the corner portion. It comprises a moving means and a second moving means for moving the rotation support means so that the cutting means forms a predetermined angle with respect to the cutting surface.

  According to the first aspect of the present invention, the rotation support means is moved by the first moving means so that the cutting means follows the cutting surface of the corner of the workpiece, and the cutting means is at a predetermined angle with respect to the cutting surface. The rotation support means is moved by the second moving means so as to form the following, and the cutting means is set at a predetermined site. When the cutting means is set at a predetermined site, the rotation support means rotates the central axis, and the rotation support means is moved by the first moving means, so that the adjacent corners of the workpiece are cut by the cutting means. By chamfering at the same time. In this way, the corners can be automatically chamfered by the cutting means regardless of the hand of the operator. Thereby, the chamfering accuracy of a corner | angular part can be stabilized, without being influenced by the operator's skill level and skill level. Further, by using a conical cutting means, adjacent corners can be chamfered simultaneously. Thereby, a corner | angular part can be chamfered rapidly. Furthermore, since the corner portion can be chamfered with a relatively simple configuration, the equipment cost can be reduced.

  According to a second aspect of the present invention, in the chamfering device according to the first aspect of the present invention, there is provided a swinging means for enabling the rotation support means to swing around a predetermined swinging point. .

  According to the invention described in claim 2, by providing the swinging means, the rotation support means can swing around a predetermined swing point. Thereby, even when the corner is curved, the cutting means can be moved in correspondence with the shape of the corner. Further, the rotation support means and the cutting means can be moved in three dimensions. As a result, the chamfering accuracy can be further increased.

  According to a third aspect of the present invention, in the chamfering device according to the first or second aspect, there is provided a regulating means for regulating movement of the cutting means relative to the corner portion.

  According to the invention described in claim 3, by providing the restricting means, the movement of the cutting means relative to the corner can be restricted. Thereby, even when the cutting means is moved by the first moving means or the second moving means, the cutting means is not greatly separated from the corner portion, and it is possible to prevent the chamfering accuracy of the corner portion from being lowered.

  According to a fourth aspect of the present invention, in the chamfering device according to the third aspect, the restricting means is an elastic member that contacts the rotation support means and applies a predetermined elastic force.

  According to the fourth aspect of the present invention, since the restricting means is an elastic member that contacts the rotation support means and applies a predetermined elastic force, the rotation support means of the rotation support means is within a range in which the elastic force from the elastic member acts. Freedom to move. As a result, the degree of freedom of movement of the cutting means can be increased, and the chamfering accuracy of the corners can be increased.

  According to a fifth aspect of the present invention, in the chamfering device according to any one of the first to fourth aspects, the movement for adjusting a movement amount of the cutting means in a direction that forms a predetermined angle with respect to the cutting surface. An amount adjusting means is provided.

  According to the fifth aspect of the present invention, by providing the movement amount adjusting means, it is possible to adjust the movement amount in a direction that forms a predetermined angle with respect to the cutting surface of the cutting means. Thereby, the amount of chamfering can be adjusted and a chamfering process can be given a degree of freedom.

  According to a sixth aspect of the present invention, in the chamfering device according to any one of the first to fifth aspects, the contact position of the cutting means with the corner is a predetermined distance from the center line of the workpiece. It is characterized by being only apart.

  According to the sixth aspect of the present invention, the position of the center of gravity of the workpiece and the corner of the cutting means are separated from each other by a predetermined distance from the center line of the workpiece. There is no overlap with the contact position. Thereby, at the time of chamfering, it can prevent that a to-be-processed object shakes centering on a centerline. As a result, the chamfering accuracy can be increased.

  According to the present invention, the chamfering operation can be speeded up and automated with a relatively simple configuration, and the chamfering accuracy can be increased.

  Next, a chamfering apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 4, the chamfering device 10 includes an air router (rotation support means) 12. A rotary shaft 14 is exposed to the outside from the front end portion of the air router 12, and a conical grindstone (cutting means) 16 is attached to the rotary shaft 14. The grindstone 16 can be rotated together with the rotating shaft 14 by the operation of the air leuter 12. Note that the rotation support means is not limited to the air router 12, and the rotation shaft 14 may be rotated by a liquid such as water. A motor or the like may be used as long as the rotation shaft 14 can be rotated. Existing ones can be used.

  One end of the arm member 18 is attached to the outer peripheral surface of the air router 12. The other end of the arm member 18 is attached to a support member 22 via a ball joint (swinging means) 20. Further, the vicinity of the front end portion of the air router 12 is held by a bracket 24. The bracket 24 is fixed to the support member 22. That is, as shown in FIG. 3, a through hole 24 is formed in the bracket 24, and the tip of the air router 12 is inserted into the through hole 24. Four springs (regulating means, elastic members) 26 are arranged at equal intervals of approximately 90 degrees on the bracket 24, and the distal ends of the springs 26 are in contact with the outer peripheral surface of the distal end portion of the air leuter 12. ing. For this reason, when the front end of the air leuter 12 is about to move in a predetermined direction, the movement of the front end of the air leuter 12 is restricted by the elastic force of the spring 26 in that direction.

  As described above, the air rutor 12 and the grindstone 16 are configured to be able to swing in the direction of 360 degrees with the center point of the ball joint 20 as the swing center point. Further, the movement of the air router 12 is regulated by the elastic force of the four springs 26.

  Further, as shown in FIG. 1, a slide member (second moving means) 28 is attached to the support member 22 so as to be substantially parallel to the air router 12. An elevating air cylinder (second moving means) 30 is connected to the upper end portion of the slide member 28. By this lift air cylinder 30, the slide member 28 is moved in the Z-axis direction (the arrow Z direction in FIG. 1) such that the grindstone 16 forms a predetermined angle with respect to the cutting surface of the teeth 32 </ b> A of the ring gear (workpiece) 32. Moved. Further, the slide member 28 is provided with a slide portion 28A. The slide portion 28A slides on the rail 34B of the inclined portion 34A formed on the base member 34, so that the slide member 28A can be moved by the lifting air cylinder 30. Accordingly, the slide member 28 is configured to be able to move on the inclined portion 34A. Further, a shock absorber (movement amount adjusting means) 36 is attached to the inclined portion 34A, and the lower end of the slide member 28 comes into contact with the shock absorber 36 when the slide member 28 moves downward. ing.

  As shown in FIG. 2, the base member 34 is placed on a Y-axis slide table 38 via an X-axis slide unit. That is, a slide portion 34A is provided on the bottom surface of the base member 34, and the base member 34 is formed on the Y-axis slide table 38 on the X-axis rail 38A extending in the X-axis direction (arrow X direction in FIG. 2). Can be moved in the X-axis direction. The base member 34 is connected to a shaft portion 40A of an X-axis slide motor (first moving means) 40 fixed to the Y-axis slide table 38. The shaft portion 40A of the X-axis slide motor 40 is provided so as to be extendable and contractible in the X-axis direction, and the base member 34 is moved in the X-axis direction via the shaft portion 40A by driving the X-axis slide motor 40. It is possible.

  Further, the Y-axis slide table 38 is placed on the mounting base 42 via the Y-axis slide unit. That is, a slide portion 38B is provided on the bottom surface of the Y-axis slide table 38, and the Y-axis slide table 38 is formed on the mounting base 42 and extends in the Y-axis direction (the arrow Y direction in FIG. 1). 42A can be moved in the Y-axis direction. The Y-axis slide table 38 is connected to a shaft portion (not shown) of a Y-axis slide motor (first movement means) 44 provided on the mounting base 42. The shaft portion of the Y-axis slide motor 44 is provided so as to be expandable and contractible in the Y-axis direction, and the Y-axis slide table 38 is moved in the Y-axis direction via the shaft portion by driving the Y-axis slide motor 44. It is possible.

  As shown in FIGS. 1 and 4, an attachment portion (not shown) for attaching a ring gear (workpiece) 32 is provided in the vicinity of the chamfering device 10. Although details will be described later, in a state where the ring gear 32 is set in the mounting portion, the grindstone 16 comes into contact with the corners of the teeth 32A of the ring gear 32 and the grindstone 16 rotates while the grindstone 16 rotates from the radially inner side to the radially outer side ( The chamfering of the teeth 32A of the ring gear 32 is performed by moving in the direction of arrow S in FIG. At this time, the central axis of the grindstone 16 and the cutting surface of the teeth 32A are set at a predetermined angle, and the contact position at which the grindstone 16 contacts the teeth 32A is the ring gear 32 as shown in FIG. Is set to be offset by a predetermined distance A from the center line L. The ring gear 32 set in the mounting portion is configured to be rotated around the central axis by the drive motor M.

  Next, the operation of the chamfering device 10 of this embodiment will be described.

  As shown in FIGS. 1 and 4, the ring gear 32 to be chamfered is set on the mounting portion. At this time, the grindstone 16 is positioned (standby) on the radially outer side of the ring gear 32. As shown in FIGS. 1 and 2, when the ring gear 32 is set in the mounting portion, the slide member 28 is moved upward by the lifting air cylinder 30, and the X-axis slide motor 40 and the Y-axis slide motor 44 are moved. , The grindstone 16 is moved radially inward of the ring gear 32. Further, the slide member 28 is moved downward by the lifting / lowering air cylinder 30, and the grindstone 16 is moved to a groove (initial position) between adjacent teeth 32A (see FIG. 4). At this time, the angle formed by the central axis of the grindstone 16 and the cutting surface of the teeth 32A is set to about 45 degrees.

  Here, as shown in FIGS. 1 and 4, when the slide member 28 is moved downward by the elevating air cylinder 30, the lower end of the slide member 28 collides with the shock absorber 36, so that The amount of movement of the slide member 28 in the downward direction can be easily changed by appropriately adjusting the mounting position of the shock absorber 36 with respect to the support member 22. The amount of movement with respect to the cutting surface can be easily adjusted. Thereby, the amount of chamfering of the teeth 32A can be easily changed or adjusted.

  When the initial position setting of the grindstone 16 is completed, the air leuter 12 is driven and the grindstone 16 rotates together with the rotary shaft 14. At the same time, the drive of the Y-axis slide motor 44 moves the Y-axis slide table 38 on the mounting base 42 in the direction away from the ring gear 32. Thereby, the chamfering process of the corner | angular part of the tooth | gear 32A which the grindstone 16 is contacting is performed. In particular, since the grindstone 16 moves while contacting the corners of the two adjacent teeth 32A, the corners of the two teeth 32A can be chamfered simultaneously.

  At this time, since the air rutor 12 and the grindstone 16 are configured to be able to swing in the direction of 360 degrees with the center point of the ball joint 20 as the swing point, even when the corners of the teeth 32A are curved. The grindstone 16 can be easily moved corresponding to the shape of the corner. As a result, the chamfering accuracy of the teeth 32A can be further increased. Further, the air ruter 12 and the grindstone 16 are configured to be able to swing in the direction of 360 degrees with the center point of the ball joint 20 as the swing point, so that the air rutor 12 and the grindstone 16 can be swung in the X-axis direction and the Y-axis direction. It is possible to move the grindstone 16 with respect to the Z-axis direction simply by moving the grindstone 16. Thus, the movement in the three-dimensional direction can be realized only by the movement in the two-dimensional direction of the air rutor 12 and the grindstone 16.

  In addition, as shown in FIG. 3, since the four springs 26 are in contact with the tip of the air router 12, when the air router 12 tries to move in a predetermined direction by the action of an external force, The air router 12 is blocked by the elastic force of the spring 26 positioned in the direction. Thereby, it can prevent that the grindstone 16 shift | deviates largely from a cutting surface. In addition, since the four springs 26 are in contact with the tip portion of the air router 12, the movement of the air router 12 and the grindstone 16 is free within the range of expansion and contraction of the spring 26. As a result, the degree of freedom of movement of the grindstone 16 can be increased, and the chamfering accuracy of the teeth 32A can be increased.

  Further, as shown in FIG. 5, the position of contact of the grindstone 16 with the corner of the tooth 32 </ b> A is offset by a predetermined distance A from the center line L of the ring gear 32, so that the center of gravity position of the ring gear 32 and the grindstone 16. There is no overlap with the contact position with the corner of the tooth 32A. Thereby, at the time of chamfering of the teeth 32 </ b> A, the ring gear 32 can be prevented from swinging left and right around the center line L as the swing center. As a result, the chamfering accuracy of the teeth 32A can be increased.

  When the grindstone 16 moves to the outside in the radial direction of the ring gear 32, the chamfering process of the corners of the adjacent two teeth 32A is completed, and the ring gear 32 is rotated by one pitch by the drive motor M being driven. Similarly, the grindstone 16 is set at an initial position between the teeth 32A and 32A to be subjected to the next chamfering process, and a new chamfering process is started. Thereafter, this process is repeated to chamfer all the teeth 32A of the ring gear 32.

  As described above, according to the chamfering apparatus 10 of the present embodiment, the corners of the teeth 32A can be automatically chamfered by the grindstone 16 regardless of the hand of the operator. As a result, the chamfering accuracy can be stabilized without being affected by the skill level or skill level of the operator. Further, by using the conical grindstone 16, the corners of adjacent teeth 32A can be chamfered simultaneously. As a result, the corners of the teeth 32A can be quickly chamfered. Furthermore, since chamfering can be realized with a relatively simple configuration, the equipment cost can be reduced.

  Next, the result of an experiment performed using the chamfering apparatus 10 of this embodiment will be described.

In this experiment, as shown in FIG. 6, an experiment using a ring gear 32 having 39 teeth 32A was performed. As a result, the chamfering width H1 (see FIG. 6) of the convex portion outside (IB side) at the corner of the tooth 32A is as shown in Table 1 and FIG.

  As shown in Table 1 and FIG. 7, the chamfering widths outside the convex portions of the corners of all the teeth 32A were within the standard value range, and it was proved that the chamfering accuracy was stable.

Further, the chamfering width H2 (see FIG. 8) of the convex portion inside (OB side) of the corner portion of the tooth 32A is as shown in the following Table 2 and FIG.

  As shown in Table 2 and FIG. 9, the chamfering widths outside the convex portions of the corners of all the teeth 32A were within the standard value range, and it was proved that the chamfering accuracy was stable.

It is a side view of the chamfering device concerning one embodiment of the present invention. It is a rear view of the chamfering device concerning one embodiment of the present invention. It is a top view which shows a part of chamfering apparatus which concerns on one Embodiment of this invention. It is a block diagram of the principal part of the chamfering apparatus which concerns on one Embodiment of this invention. It is a state figure when carrying out the chamfering of the workpiece by the chamfering apparatus which concerns on one Embodiment of this invention. It is the fragmentary perspective view which carried out the chamfering process of the corner | angular part outside the convex part of the tooth | gear of a to-be-processed object with the chamfering apparatus which concerns on one Embodiment of this invention. It is a graph which shows the measured value of the chamfering width when the corner | angular part outside the convex part of the tooth | gear of a workpiece is chamfered with the chamfering apparatus which concerns on one Embodiment of this invention. It is the fragmentary perspective view which carried out the chamfering process of the corner | angular part inside the convex part side of the tooth | gear of a workpiece with the chamfering apparatus which concerns on one Embodiment of this invention. It is a graph which shows the measured value of the chamfering width when the corner | angular part inside the convex part of the tooth | gear part of a workpiece is chamfered with the chamfering apparatus which concerns on one Embodiment of this invention. It is a figure which shows the chamfering operation | work of the conventional workpiece.

Explanation of symbols

10 Chamfering device 12 Air Lute (Rotation support means)
16 Grinding wheel (cutting means)
20 Ball joint (swinging means)
26 Spring (regulating means, elastic member)
28 Slide member (second moving means)
30 Lifting air cylinder (second moving means)
32 Ring gear (workpiece)
34 Foundation member (first moving means)
36 Shock absorber (Movement adjustment means)
38 Y-axis slide table (first moving means)
40 X-axis slide motor (first moving means)
44 Y-axis slide motor (first moving means)

Claims (6)

A chamfering device for chamfering a corner of a workpiece,
A conical cutting means for contacting the adjacent corners of the workpiece and chamfering the adjacent corners simultaneously;
A rotation support means for supporting the cutting means and rotating the cutting means around a central axis;
First moving means for moving the rotation support means so that the cutting means follows the cutting surface of the corner,
Second moving means for moving the rotation support means so that the cutting means forms a predetermined angle with respect to the cutting surface;
A chamfering device comprising: a chamfering device.   2. The chamfering device according to claim 1, further comprising a swinging means for enabling the rotation support means to swing around a predetermined swinging point.   The chamfering device according to claim 1, further comprising a regulating unit that regulates movement of the cutting unit with respect to the corner portion.   4. The chamfering apparatus according to claim 3, wherein the restricting means is an elastic member that contacts the rotation support means and applies a predetermined elastic force.   5. The chamfering device according to claim 1, further comprising a moving amount adjusting unit that adjusts a moving amount of the cutting unit in a direction that forms a predetermined angle with respect to the cutting surface. . The chamfering device according to any one of claims 1 to 5, wherein a contact position of the cutting unit with the corner portion is a predetermined distance away from a center line of the workpiece.

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