JP2006281358A - Deburring tool for hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deburring tool for a hole capable of deburring for a small hole, and comparatively simple in structure. <P>SOLUTION: This deburring tool for a hole includes: a tool body 2; a tip part 3 provided on the tip of the tool body and inserted in a hole 101; a longitudinal groove 5 formed in the longitudinal direction of the tip part 3; a cutter body 11 disposed in the longitudinal groove 5 and having a machining part 12 at the tip side 11S; a shaft 8 which is a rotary connecting part for rotatably fitting the cutter body 11 to the longitudinal groove 5; and an elastic ring 16 provided rather closer to the base end side 1K than the shaft 8 to energize the cutter body 11 in the direction of projecting the machining part 12 from the longitudinal groove 5. When the tool body is inserted in the hole 101 while being rotated, the outer burr of the hole 101 is removed by the machining part 12. Since the elastic ring 16 is provided rather closer to the base end than the shaft 8, the tip part 3 of the tool body 2 can be formed thin so that chamfering for a small hole can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hole deburring tool for removing burrs generated inside and outside a hole drilled by a drill or the like.

Conventionally, as this type, the deburring tip is exposed from the tip of the cylindrical deburring tool body with the tip portion squeezed, and the rear end of the deburring tip is stored in the deburring tool body. There is a deburring tool that is pushed in and closed by a plug fitted at the rear end of the deburring tool body and attached to the deburring tool mounting hole provided on the shaft of the drilling tool. (For example, Patent Document 1), the deburring tool also enters the machining hole by the drilling operation by the drilling tool, and the deburring tip that is outward from the drilling tool is the opening end of the machining hole. The burrs are rolled to remove the burrs.
Japanese Utility Model Publication 1-37853

  In the above prior art, the spring housed in the deburring tool body is arranged in the diameter direction of the deburring tool body, and the deburring tip is pushed outward by the spring, so the tool body houses the spring. At the same time, the dimensions required to incorporate deburring tips were required. For this reason, there is a limit in reducing the diameter of the deburring tool body, and it cannot be used for small-diameter holes.

  In addition, the deburring tip is assembled to the deburring tool body, and the spring that pushes this chip is housed in the deburring tool body and closed with a plug fitted at the rear end of the deburring tool body, so the chip assembly work However, it is practically difficult to replace the spring in order to change the pressing force of the spring.

  The present invention is intended to solve such problems, and an object of the present invention is to provide a hole deburring tool that can deburr small holes and has a relatively simple structure.

  The invention of claim 1 includes a tool body, a tip provided at the tip of the tool body, inserted into the hole, a longitudinal groove formed in the length direction of the tip, and disposed in the longitudinal groove. A cutting tool body having a processing portion on the distal end side, a turning connecting portion for rotatably attaching the cutting tool body to the longitudinal groove, and a base end side of the turning connecting portion. And an urging means for urging the blade body in a direction protruding from the longitudinal groove.

  According to a second aspect of the present invention, the urging means is externally mounted on the tool body.

  According to a third aspect of the present invention, the biasing means is an elastic ring, and the elastic ring is wound around proximal ends of the tool body and the blade body.

  According to a fourth aspect of the present invention, an engagement portion with which the elastic ring is engaged is provided on the base end side of the blade body.

  In the invention of claim 5, a plurality of the engaging portions are juxtaposed in the length direction of the blade body.

  According to the configuration of the first aspect, when the tip is inserted into the hole while rotating the tool body, the deburring of the outside of the hole is performed by the processing portion, and further, when inserted, against the bias of the biasing means. When the processed part is stored in the vertical groove and passes through the hole, the processed part protrudes from the vertical groove, and deburring of the inside of the hole is performed. Since the urging means is provided on the base end side from the rotation connecting portion, the tip end portion of the tool main body can be formed thin, and the chamfering of the small hole can be performed.

  According to the second aspect of the present invention, the urging means can be easily assembled by mounting the urging means.

  According to the configuration of claim 3, when the processed portion on the distal end side receives a force in the longitudinal groove storing direction, the base end side of the cutter body rotates in a direction protruding from the longitudinal groove, and the elastic ring is extended. Due to the restoring force of the elastic ring, a force is applied in a direction in which the processed portion protrudes from the longitudinal groove.

  Moreover, according to the structure of Claim 4, the assembly operation | work of an elastic ring becomes easy by engaging an elastic ring with an engaging part.

  Moreover, according to the structure of Claim 5, the force added to the process part by an elastic ring can be adjusted by changing the attachment position of an elastic ring and adjusting the space | interval of a rotation connection part and an engaging part. .

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each of the embodiments, a new hole deburring tool that is different from the conventional one is obtained, and the hole deburring tool is obtained.

  1 to 5 show a first embodiment of the present invention. As shown in FIG. 1, the hole deburring tool 1 includes a metal tool body 2 and And a metal blade body 11 to be mounted on the tool body 2. At the tip of the tool body 2, a tip 3 is provided to be inserted into the hole 101 that is a workpiece. The distal end 3 is formed by the step 4 to be smaller in diameter than the base end 2K of the tool body 2, and at least the distal end 3 inserted into the hole 101 is formed in a cylindrical shape. In this example, the distal end 3 is also cylindrical. Is formed. In the length direction of the tool body 2, longitudinal grooves 5 are formed continuously from the distal end portion 3 and the base end portion 2K, and the longitudinal grooves 5 open on both sides in the diameter direction of the tool body 2, and the distal ends thereof. Is closed by the closing part 6.

  A plate-shaped blade body 11 is disposed in the longitudinal groove 5, and a processing portion 12 projecting sideways is provided on the distal end side of the blade body 11, and the processing portion 12 has a distal end side and a proximal end. Equipped with inclined processing edges 13, 13K on the sides. Further, a shaft hole 14 is formed on the center side of the cutter body 11, and an attachment hole 7 is formed on the proximal end side of the distal end portion 3 of the tool body 2 corresponding to the shaft hole 14, A shaft 8 serving as a rotation connecting portion is inserted into the mounting hole 7 and the shaft hole 14, and a blade body 11 is rotatably provided in the longitudinal groove 5 around the shaft 8. The distal end side 11S of the blade body 11 has a width smaller than the diameter of the distal end portion 3 and is accommodated in the longitudinal groove 5. On the other hand, the base end side 11K of the blade body 11 is formed to be wider than the tip end side 11S corresponding to the base end portion 2K, and the width thereof is substantially the same as the width between the openings on both sides of the longitudinal groove 5 in the tip end portion 3. The width dimension of the longitudinal groove 5 is the diameter dimension of the tip 3.

  A plurality of recesses 15 are arranged in the longitudinal direction on both side edges of the distal end side 11S at substantially equal intervals, and the recesses 15 constitute engaging portions. Then, an elastic ring 16 is employed as the urging means, and this elastic ring 16 has an elastic restoring force to return to its original state when stretched. In this example, a rubber ring is used and wound around the base end 2K. The elastic ring 16 is inserted and engaged with the recesses 15 on both sides of the base end side 11K.

  The recess 15 is not necessarily provided on both side edges on the base end side 11K, and may be provided on at least the edge 11F on the processed part 12 side. When a force for pushing the processed portion 12 into the longitudinal groove 5 is applied by winding the base end 2K so that the elastic ring 16 is engaged with the recesses 15 and 15, the shaft 8 is the center. Due to the rotation of the blade body 11, the edge 11F on the base end side 11K located on the processed part 12 side protrudes outward from the longitudinal groove 5, thereby extending the elastic ring 16, and simultaneously restoring the elastic ring 16 that has been extended. A force that rotates the blade body 11 in the reverse direction is generated by the force. In addition, the other edge 11G of the distal end side 11S of the cutter body 11 is formed obliquely so as not to come out of the vertical groove 5 when the processed portion 12 is submerged in the vertical groove 5. The side 11S has a shape that becomes narrower toward the tip.

  Next, the method of using the tool 1 will be described. The hole 101 is, for example, a horizontal hole formed in a crossing direction with respect to the central hole 103 of the cylindrical member 102. The outer and inner edges 11F of the hole 101 are deburred by the tool 1, and the position, strength, etc. of the elastic ring 16 are adjusted by the finishing method. First, when the elastic ring 16 is engaged with the recesses 15 and 15 on the base end side, compared with the case where the elastic ring 16 is engaged with the recesses 15 and 15 on the distal end among the plurality of recesses 15, 15 and 15. Since the elastic ring 16 is separated from the shaft 8, the force to project the processed part 12 is stronger due to the principle of the lever, and the processed part 12 strongly hits the edge 11F of the hole 101 at the time of deburring, thereby chamfering. Can be done greatly. On the contrary, if the elastic ring 16 is engaged with the recesses 15 and 15 on the front end side, the force for projecting the processed portion 12 can be set weak. Even when the elastic ring 16 is locked to the concave portions 15 and 15 at the same position, the force for projecting the processed portion 12 can be adjusted by selecting elastic rings having different strengths.

  When the elastic ring 16 is wound around the base end 2K so as to be engaged with the recesses 15 and 15 and the distal end side of the tool 1 is inserted into the hole 101 while rotating, the outer edge 101F of the hole 101 is moved to the edge 101F. As the processing edge 13 is pushed along, the processing portion 12 gradually retracts into the longitudinal groove 5. In this way, until the machining edge 13 comes into contact with the edge 101F and retracts into the longitudinal groove 5, the machining edge 13 scrapes off the burrs on the edge 101F by the rotation of the tool 1. When the processed portion 12 reaches the inner edge 101F of the hole 101, the processed portion 12 protrudes outward from the longitudinal groove 5 by the elastic restoring force of the elastic ring 16, and the burr is scraped off by the processed edge 13K. When the tool 12 is pulled out from the hole 101 after the machining part 12 has passed through the hole 101 in this way, the edge 101F of the inner hole 101 is similarly cut by the machining edge 13K, and the edge 101F of the outer hole 101 becomes the same. It is similarly cut by the processing edge 13, and burrs are removed and chamfered.

  Thus, in this embodiment, corresponding to claim 1, the tool body 2, the tip 3 provided at the tip of the tool body 2 and inserted into the hole 101, and the length direction of the tip 3 A vertical groove 5 formed in the vertical groove 5, a cutter body 11 having a processing part 12 on the distal end side 11 </ b> S, and a rotary connecting part for rotatably mounting the blade main body 11 to the vertical groove 5. A tool body is provided with a shaft 8 and an elastic ring 16 provided on the proximal end side 11K from the shaft 8 and serving as a biasing means for biasing the cutter body 11 in a direction in which the processed portion 12 protrudes from the longitudinal groove 5. 2 is inserted into the hole 101 while rotating, the deburring of the outside of the hole 101 is performed by the processed portion 12, and further, when inserted, the processed portion 12 is placed in the vertical groove 5 against the urging of the elastic ring 16. When it is stored and passes through the hole 101, the processed portion 12 protrudes from the longitudinal groove 5, and deburring of the inside of the hole 101 is performed. And since the elastic ring 16 is provided in the base end side from the axis | shaft 8, the front-end | tip part 3 of the tool main body 2 can be formed thinly, and chamfering of a small hole is attained.

  In this way, in this embodiment, the elastic ring 16 as the biasing means is externally mounted on the tool body 2 in correspondence with the second aspect, so that the assembly work of the elastic ring 16 is facilitated.

  Thus, in this embodiment, corresponding to claim 3, the urging means is the elastic ring 16, and the base end side 11K of the blade body 11 is formed to have substantially the same width as the longitudinal groove 5, Since the elastic ring 16 is wound around the base end side 11K of the main body 2 and the cutter body 11, when the processing portion 12 on the front end side receives a force in the longitudinal groove 5 storing direction, the base end side 11K of the cutter body 11 is the longitudinal groove. The elastic ring 16 is extended in a direction protruding from 5, and the restoring force of the elastic ring 16 applies a force in a direction protruding the processed portion 12 from the longitudinal groove 5.

  In this way, in this embodiment, corresponding to claim 4, the base end side 11K of the blade body 11 is provided with the concave portion 15 as the engaging portion with which the elastic ring 16 is engaged. By engaging the ring 16, assembly work of the elastic ring 16 is facilitated.

  In this way, in this embodiment, in correspondence with claim 5, a plurality of concave portions 15 as engaging portions are arranged in parallel in the length direction of the blade body 11, so that the mounting position is changed and the shaft 8 and the concave portion 15 By adjusting the distance between the two, the force applied to the processed portion 12 by the elastic ring 16 can be adjusted.

  Further, as an effect of the embodiment, since the stepped portion 4 is formed in the tool body 2, when deburring the hole 101 corresponding to the diameter of the distal end portion 3, the base end side enters the hole 101 from the stepped portion 4. There is nothing.

  FIG. 6 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the cutter body 11 is not provided with a recess as an engaging portion, and the edge 11F on the base end side 11K is configured to be pushed by an elastic spring 17 made of a leaf spring or the like. The base end side is detachably fixed to the base end portion 2K by screws 18 as fixing means, and the distal end side which is the free end of the elastic spring 17 is such that the edge 11F of the base end side 11K extends from the inside of the longitudinal groove 5 to the outside. When it comes out, the structure which pushes this is adopted.

  Thus, in this embodiment, corresponding to claim 1, the tool body 2, the tip 3 provided at the tip of the tool body 2 and inserted into the hole 101, and the length direction of the tip 3 A vertical groove 5 formed in the vertical groove 5, a cutter body 11 having a processing part 12 on the distal end side 11 </ b> S, and a rotary connecting part for rotatably mounting the blade main body 11 to the vertical groove 5. The tool body is provided with a shaft 8 and an elastic spring 17 provided on the proximal end side 11K from the shaft 8 and serving as a biasing means for biasing the cutter body 11 in a direction in which the processed portion 12 protrudes from the longitudinal groove 5. 2 is inserted into the hole 101 while rotating, the deburring of the outside of the hole 101 is performed by the processed portion 12, and further, when inserted, the processed portion 12 is placed in the vertical groove 5 against the urging of the elastic ring 16. When it is stored and passes through the hole 101, the processed portion 12 protrudes from the longitudinal groove 5, and deburring of the inside of the hole 101 is performed. And since the elastic spring 17 is provided in the base end side from the axis | shaft 8, the front-end | tip part 3 of the tool main body 2 can be formed thinly, and a chamfer of a small hole is attained.

  In addition, the chamfer dimension and the like can be adjusted by replacing the elastic spring 17 with a different strength.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible. For example, although the concave portions as the engaging portions are provided on both sides of the proximal end side 11K, only one of them may be provided. Various urging means can be used.

It is sectional drawing which shows Example 1 of this invention. FIG. 6 is a cross-sectional view of a state in which a processed part is submerged in a vertical groove. It is a side view same as the above. It is an exploded perspective view same as the above. It is sectional drawing of a use condition same as the above. It is sectional drawing which shows Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Deburring tool 2K Base end part 2 Tool main body 3 Tip part 5 Vertical groove 8 Axis (rotation connection part)
11 Blade body
11K Base end side
11S Tip side
12 Machining part
15 Recess (engagement part)
16 Elastic ring (elastic body)
17 Elastic spring (elastic body)
101 holes

Claims (5)

A tool body, a tip provided at the tip of the tool body and inserted into the hole, a longitudinal groove formed in the length direction of the tip, and a processing part disposed in the longitudinal groove on the tip side A blade body, a rotation connecting portion that rotatably attaches the blade body to the vertical groove, and a blade main body provided in a base end side from the rotation connection portion in a direction of projecting the processing portion from the vertical groove. A deburring tool for holes, comprising a biasing means for biasing the holes. 2. The hole deburring tool according to claim 1, wherein the biasing means is externally mounted on the tool body. 3. The hole deburring tool according to claim 2, wherein the biasing means is an elastic ring, and the elastic ring is wound around proximal ends of the tool body and the blade body. The hole deburring tool according to claim 3, wherein an engagement portion with which the elastic ring is engaged is provided on a base end side of the blade body. The hole deburring tool according to claim 4, wherein a plurality of the engaging portions are arranged side by side in the length direction of the blade body.

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