JP6677588B2 - Tools and equipment - Google Patents

Description

  The present invention relates to a tool and an apparatus, and particularly to a tool for chamfering and deburring a hole and an apparatus having the tool.

  When a through hole is formed in a steel plate, burrs are generated at the edges of the front and back surfaces of the through hole. When a steel plate is tightened by inserting a bolt or a rivet into the through hole, an appropriate tightening force or frictional force cannot be obtained due to the burrs, which causes a quality problem. Further, when the shaft or the bush is fitted into the through hole, the burrs bite, resulting in poor assembly.

  Therefore, it is necessary to use a grinder or to perform other grinding or the like to remove such burrs. These deburring operations require considerable labor and time. In particular, in the case of deburring work by grinding, problems such as an increase in work load due to reversal work of steel plates and the like, generation of dust, generation of noise, and the like arise.

  On the other hand, a tool for chamfering and deburring a through hole is disclosed, for example, in Japanese Patent Application Laid-Open No. 2015-20253 (Patent Document 1). In the tool described in this publication, the tool body has a cylindrical portion having an internal space. The cutter blade includes a blade portion protruding from the outer peripheral surface of the cylindrical portion of the tool body, and an elastic portion connected to the blade portion. The movable body supports the elastic portion from the inner peripheral side of the tool body. The moving body mounting portion is mounted on the tool body along the axial direction, and moves the moving body in the axial direction.

  With this tool, the moving body can be moved in the axial direction only by moving the moving body mounting portion in the axial direction with respect to the tool body. By moving the moving body in the axial direction, the position where the moving body supports the elastic portion can be changed, and the pressing strength of the cutter blade can be changed.

JP 2015-20253 A

  In the chamfering and deburring work, there are cases where it is desired to perform chamfering and deburring of two coaxial through holes. In particular, two through-holes arranged coaxially may have different hole diameters. In such a case, improvements are required in conventional hole chamfering and deburring tools.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a tool and a device capable of performing a chamfering / burring work even when two through holes arranged coaxially have different hole diameters. It is to be.

  A tool according to the present invention includes a tool body, at least one first cutter blade, a first moving body, at least one second cutter blade, a second moving body, and a moving body mounting portion. The tool body has a cylindrical portion having an internal space. The at least one first cutter blade has a first blade protruding from the outer peripheral portion of the cylindrical portion of the tool body, and is elastically deformed so as to be connected to the first blade and move the first blade toward the internal space. A possible first elastic part. The first moving body supports the first elastic portion from the inner peripheral side of the tool main body. The at least one second cutter blade has a second blade portion protruding from the outer peripheral portion of the cylindrical portion of the tool body, and is elastically deformed so as to be connected to the second blade portion and move the second blade portion toward the internal space. And a possible second elastic part. The second movable body supports the second elastic portion from the inner peripheral side of the tool main body. The moving body mounting portion is mounted on the tool body along the axial direction of the cylindrical portion, and moves the first moving body and the second moving body in the axial direction. The outer diameter of the second blade is smaller than the outer diameter of the first blade.

  According to the tool of the present invention, the outer diameter of the second blade is smaller than the outer diameter of the first blade. For this reason, even if the hole diameters of the two coaxially arranged through holes are different from each other, chamfering and deburring of the large diameter through hole are performed by the first blade portion, and chamfering and deburring of the small diameter through hole are performed. This can be performed at the second blade. Thus, even when the diameters of the two through holes arranged coaxially are different, the chamfering and deburring work can be performed.

  Further, a moving body mounting portion is mounted on the tool body along the axial direction of the cylindrical portion, and the first and second moving bodies are moved only by moving the moving body mounting portion in the axial direction with respect to the tool body. It can be moved axially. By moving the first and second moving bodies in the axial direction, it is possible to change the locations (that is, fulcrums) where the first and second moving bodies support the first and second elastic portions. Thereby, the pressing strength of the first and second cutter blades can be changed. As described above, it is possible to change the pressing strength of each of the first and second cutter blades by a simple operation of moving the moving body mounting portion in the axial direction with respect to the tool main body. For this reason, even when the hole diameters of the two coaxially arranged through holes are different from each other, it is easy to set the pressing strength of each of the first and second cutter blades to the optimum strength for each hole diameter. Becomes

  In the above-mentioned tool, the internal space is open at the tip of the cylindrical portion. The second blade is disposed closer to the distal end of the tubular portion than the first blade. Thereby, even if the diameters of the two coaxially arranged through holes are different from each other, the large diameter through hole on the front side is chamfered and deburred by the first blade portion, and the small diameter through hole on the back side is formed. Chamfering and deburring can be performed by the second blade portion.

  In the above-mentioned tool, at least one first cutter blade is a plurality of first cutter blades. Thereby, the plurality of first blade portions can perform chamfering and deburring of the through hole.

  In the above-mentioned tool, at least one second cutter blade is a plurality of second cutter blades. Thereby, the plurality of second blade portions can perform chamfering and deburring of the through hole.

  In the above-mentioned tool, the moving body attaching portion has one screw portion, and the tool body has the other screw portion that meshes with the one screw portion. The first moving body moves in the axial direction with respect to the tool body by screwing the one screw part and the other screw part into each other in the axial direction. This makes it possible to change the pressing strength of the first cutter blade by a simple operation of screwing the one screw portion and the other screw portion together in the axial direction.

  In the above-mentioned tool, a male screw portion is provided on an outer peripheral portion of the moving body mounting portion. The second moving body has a through hole extending in the axial direction, and has a female screw portion on the inner surface of the through hole. By screwing the male screw portion into the female screw portion in the axial direction, the second moving body moves in the axial direction with respect to the tool main body. This makes it possible to change the pressing strength of the second cutter blade by a simple operation of screwing the male screw portion into the female screw portion in the axial direction.

  In the above-described tool, the first moving body has a first flange portion that protrudes toward the outer peripheral side in the axial direction, and an outer peripheral end of the first flange portion supports the first elastic portion. The second moving body has a second flange portion protruding toward the outer peripheral side in the axial direction, and the outer peripheral end of the second flange portion supports the second elastic portion. The first and second elastic portions can be supported with a simple configuration in which such first and second flange portions are provided.

  In the above-mentioned tool, a first inclined surface obtained by cutting a part of the first flange portion from the inner peripheral side to the outer peripheral end is provided. The first moving body supports the first elastic portion at the outer peripheral end of the first inclined surface. By forming a part of the first flange portion as the cut-out first inclined surface as described above, it is possible to reduce a contact portion between the first moving body and the first elastic portion, and to enlarge a movable range of the first elastic portion. it can.

  In the above-mentioned tool, the first flange portion has a shape that does not come into contact with the second elastic portion even when the second elastic portion is elastically deformed. This prevents the first flange portion from hindering the elastic deformation of the second elastic portion.

  In the above-mentioned tool, a second inclined surface obtained by cutting a part of the second flange portion from the inner peripheral side to the outer peripheral end is provided. The second moving body supports the second elastic portion at the outer peripheral end of the second inclined surface. By forming a part of the second flange portion as the cut-out second inclined surface in this manner, the contact point between the second moving body and the second elastic portion can be reduced, and the movable range of the second elastic portion can be expanded. it can.

  In the above-mentioned tool, the second flange portion has a shape that does not come into contact with the first elastic portion even when the second elastic portion is elastically deformed. This prevents the second flange from hindering the elastic deformation of the first elastic portion.

  In the above-mentioned tool, at least one of the first elastic portion and the second elastic portion is a leaf spring. This makes it possible to change the pressing strength of the first and second cutter blades by changing the portion supporting the plate spring with a simple configuration of the plate spring.

  The device of the present invention includes any one of the above tools, and a drive unit that rotates the tool about the axial direction and moves the tool forward and backward along the axial direction.

  ADVANTAGE OF THE INVENTION According to the apparatus of this invention, the chamfering and deburring operation | work can be performed even when the hole diameter of two through-holes arranged coaxially differs.

  As described above, according to the present invention, it is possible to realize a tool and a device capable of performing chamfering and deburring work even when two through-holes arranged coaxially have different hole diameters.

1 is an exploded perspective view schematically showing a configuration of a hole chamfering and deburring tool according to an embodiment of the present invention. FIG. 2A is a front view schematically showing the configuration of the hole chamfering and deburring tool shown in FIG. 1, and FIG. 2B is a schematic sectional view taken along line IIB-IIB of FIG. It is a schematic sectional drawing which shows the state which moved the 2nd mobile body to the front-end | tip side of a cylindrical part along the axial direction from the state of FIG. 2 (B). FIG. 3 is a schematic cross-sectional view showing a state in which a first moving body is moved from a state shown in FIG. FIG. 2 is a side view schematically showing a configuration of a hole chamfering / burring-off device to which the hole chamfering / burring-off tool shown in FIG. 1 is attached. The figure which shows roughly the 1st process of chamfering the edge part of a through-hole on both the front and back of two through-holes arranged coaxially using the hole chamfering / burring-off apparatus shown in FIG. It is. The figure which shows roughly the 2nd process of chamfering the edge part of a through-hole on both the front and back sides of two through-holes arranged coaxially using the hole chamfering and deburring apparatus shown in FIG. It is. The figure which shows roughly the 3rd process of chamfering the edge part of a through-hole on both the front and back sides of two through-holes arranged coaxially using the hole chamfering and deburring apparatus shown in FIG. It is. The figure which shows roughly the 4th process of chamfering the edge part of a through-hole on both the front and back of two through-holes arranged coaxially using the hole chamfering and deburring apparatus shown in FIG. It is.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a configuration of a hole chamfering / burring removing tool according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 and 2A and 2B, a hole chamfering and deburring tool 1 according to the present embodiment includes a tool body 2, a first cutter blade 3, and a second cutter blade 4. , A first holder 8, a second holder 9, a first moving body 6, a second moving body 5, and a moving body mounting portion 7.

  The tool main body 2 mainly has a cylindrical portion 2a, a support portion 2b, and a device mounting portion 2c. The cylindrical portion 2a is mounted on the device mounting portion 2c via the support portion 2b. The cylindrical portion 2a has a larger diameter than the support portion 2b, for example, has a diameter of 40 mm or more.

  The cylindrical portion 2a has a cylindrical shape, for example, and has an internal space 2ah, first grooves 2aa, 2ab, and second grooves 2ad, 2ae. The internal space 2ah is formed inside the cylindrical portion 2a, and opens to the outside of the cylindrical portion 2a at the tip of the cylindrical portion 2a (on the side opposite to the side where the support portion 2b is attached). .

  The first groove portions 2aa and 2ab have a first portion 2aa and a second portion 2ab. The first portion 2aa and the second portion 2ab are connected to each other along the axial direction A (FIG. 2B) of the cylindrical portion 2a.

  The first portion 2aa is located closer to the distal end of the tubular portion 2a than the second portion 2ab. The first portion 2aa has a smaller width (dimension in the circumferential direction of the cylindrical portion 2a) than the second portion 2ab.

  The first portion 2aa is formed so as to reach the internal space 2ah from the outer peripheral surface of the cylindrical portion 2a. The second portion 2ab has a bottom, and has a screw hole 2ac at the bottom.

  The second grooves 2ad, 2ae have a first portion 2ad and a second portion 2ae. The first portion 2ad and the second portion 2ae are connected to each other along the axial direction A (FIG. 2B) of the cylindrical portion 2a.

  The first portion 2ad is located closer to the distal end of the tubular portion 2a than the second portion 2ae. The first portion 2ad has a smaller width (dimension in the circumferential direction of the cylindrical portion 2a) than the second portion 2ae.

  The first portion 2ad is formed so as to reach the internal space 2ah from the outer peripheral surface of the cylindrical portion 2a. The second portion 2ae has a bottom, and has a screw hole 2af at the bottom.

  The first grooves 2aa, 2ab and the second grooves 2ad, 2ae have the same shape. The first groove portions 2aa and 2ab and the second groove portions 2ad and 2ae are arranged so as to be shifted from each other in the circumferential direction of the cylindrical portion 2a. The second grooves 2ad, 2ae are located closer to the distal end of the tubular portion 2a than the first grooves 2aa, 2ab.

  A screw hole 2ag is formed in the cylindrical portion 2a so as to penetrate from the outer peripheral surface to the inner peripheral surface. A male screw member 33 is screwed into the screw hole 2ag. The distal end of the male screw member 33 protrudes into the internal space 2ah of the cylindrical portion 2a.

  The first cutter blade 3 has a first blade portion 3a and a first elastic portion 3b connected to the first blade portion 3a. The first cutter blade 3 is inserted into the first grooves 2aa and 2ab from the outer peripheral side of the cylindrical portion 2a.

  In a state where the first cutter blade 3 is inserted into the first groove portions 2aa and 2ab, the first blade portion 3a protrudes from the outer peripheral surface of the cylindrical portion 2a. Further, the first blade portion 3a is located closer to the distal end of the tubular portion 2a than the first elastic portion 3b. The first blade portion 3a has inclined surfaces 3aa and 3ab on the front end side and the opposite side, respectively. Each of the two inclined surfaces 3aa, 3ab has a cutting edge.

  With the first cutter blade 3 inserted into the first grooves 2aa, 2ab, the first elastic portion 3b is buried in the first grooves 2aa, 2ab and does not protrude from the outer peripheral surface of the cylindrical portion 2a. . The first elastic portion 3b is made of, for example, a leaf spring and has the same width as the first blade portion 3a.

  The end of the first elastic portion 3b opposite to the first blade portion 3a is fixed to the tubular portion 2a by the first holder 8. Thus, the first blade portion 3a has a cantilever configuration that is movable (elastically deformable) in the radial direction of the cylindrical portion 2a.

  The first holder 8 has a screw 8a and a holding member 8b. The holding member 8b has a through hole, and the screw 8a is inserted into the through hole of the holding member 8b. The first holder 8 is disposed in the second portion 2ab of the first groove of the cylindrical portion 2a. In a state where the first holder 8 is arranged in the second portion 2ab, the pressing member 8b presses the end of the first elastic portion 3b from the outer peripheral side to the inner peripheral side of the cylindrical portion 2a. In this state, the screw 8a is screwed into the screw hole 2ac of the cylindrical portion 2a, so that the end of the first elastic portion 3b is fixed to the cylindrical portion 2a.

  The second cutter blade 4 has a second blade part 4a and a second elastic part 4b connected to the second blade part 4a. The second cutter blade 4 is inserted into the second grooves 2ad, 2ae from the outer peripheral side of the cylindrical portion 2a.

  With the second cutter blade 4 inserted into the second grooves 2ad, 2ae, the second blade 4a protrudes from the outer peripheral surface of the cylindrical portion 2a. Further, the second blade portion 4a is located closer to the distal end of the cylindrical portion 2a than the second elastic portion 4b. The second blade portion 4a has inclined surfaces 4aa and 4ab on the front end side and the opposite side, respectively. A cutting edge is formed on each of the two inclined surfaces 4aa and 4ab.

  With the second cutter blade 4 inserted in the second grooves 2ad, 2ae, the second elastic portion 4b is embedded in the second grooves 2ad, 2ae, and does not protrude from the outer peripheral surface of the cylindrical portion 2a. . The second elastic portion 4b is made of, for example, a leaf spring and has the same width as the second blade portion 4a.

  The end of the second elastic portion 4b opposite to the second blade portion 4a is fixed to the cylindrical portion 2a by the second holder 9. Thus, the second blade portion 4a has a cantilever configuration that is movable (elastically deformable) in the radial direction of the cylindrical portion 2a.

  The second holder 9 has a screw 9a and a holding member 9b. The holding member 9b has a through hole, and the screw 9a is inserted into the through hole of the holding member 9b. The second holder 9 is disposed in the second portion 2ae of the second groove of the cylindrical portion 2a. In a state where the second holder 9 is disposed in the second portion 2ae, the pressing member 9b presses the end of the second elastic portion 4b from the outer peripheral side to the inner peripheral side of the cylindrical portion 2a. In this state, the end of the second elastic portion 4b is fixed to the cylindrical portion 2a by screwing the screw 9a into the screw hole 2af of the cylindrical portion 2a.

  The first moving body 6 is disposed in the internal space 2ah of the cylindrical portion 2a. The first moving body 6 has a first flange portion 6a and a main body portion 6c. The first flange portion 6a has a shape in which corners of a polygon (for example, a rectangle) are rounded. The round shape of the corner of the first flange portion 6a conforms to the inner wall shape of the cylindrical portion 2a that defines the internal space 2ah.

  The main body 6c has, for example, a cylindrical shape. The first flange 6a is integrally connected to the main body 6c. The first flange portion 6a protrudes from the outer peripheral surface of the main body portion 6c to the radially outer peripheral side centering on the axial direction A.

  A through-hole 6d (FIG. 2B) is formed in the first flange 6a and the main body 6c. The through hole 6d extends along the axial direction A, and penetrates each of the first flange portion 6a and the main body portion 6c.

  An inclined surface 6b is formed on the first flange 6a of the first moving body 6. The inclined surface 6b is formed by cutting a part of the first flange 6a from the inner peripheral side to the outer peripheral end. In the portion where the inclined surface 6b is formed, the thickness of the first flange portion 6a in the axial direction A decreases from the inner peripheral side to the outer peripheral end. The inclined surface 6b is formed on the surface of the first flange portion 6a opposite to the main body portion 6c.

  A screw hole 6f is formed to reach the through hole 6d from the outer peripheral surface of the main body 6c. A male screw member 32 is screwed into the screw hole 6f. The tip of the male screw member 32 protrudes into the through hole 6d.

  A screw hole 6e is formed so as to reach the through hole 6d from the outer peripheral surface of the first flange portion 6a. The male screw member 31 is screwed into the screw hole 6e. The tip of the male screw member 31 protrudes into the through hole 6d.

  A movement restricting groove 6g is formed on the outer peripheral surface of the main body 6c. The longitudinal direction of the movement restricting groove 6g is along the axial direction A. The distal end of the male screw member 33 is inserted into the movement restricting groove 6g.

  The second moving body 5 is arranged in the internal space 2ah of the cylindrical portion 2a. The second moving body 5 has a second flange portion 5a and a main body portion 5c. The second flange portion 5a has a shape in which corners of a polygon (for example, a rectangle) are rounded. The round shape of the corner portion of the second flange portion 5a follows the inner wall shape of the cylindrical portion 2a that defines the internal space 2ah.

  The main body 5c has, for example, a cylindrical shape. The second flange 5a is integrally connected to the main body 5c. The second flange portion 5a protrudes from the outer peripheral surface of the main body portion 5c to the radially outer peripheral side centered on the axial direction A.

  A through hole 5d (FIG. 2B) is formed in the second flange 5a and the main body 5c. The through hole 5d extends along the axial direction A, and penetrates each of the second flange portion 5a and the main body portion 5c. A female screw portion 5f (FIG. 2B) is formed on the inner wall of the through hole 5d.

  An inclined surface 5b is formed on the second flange portion 5a of the second moving body 5. The inclined surface 5b is formed by cutting a part of the second flange portion 5a from the inner peripheral side to the outer peripheral end. In the portion where the inclined surface 5b is formed, the thickness of the second flange portion 5a in the axial direction A decreases from the inner peripheral side to the outer peripheral end. The inclined surface 5b is formed on the surface of the second flange portion 5a opposite to the main body portion 5c.

  The main body 5c has an outer diameter smaller than the inner diameter of the through hole 6d of the first moving body 6. At least a part of the main body 5c is inserted into the through hole 6d of the first moving body 6.

  A movement regulating groove 5e is formed on the outer peripheral surface of the main body 5c. The longitudinal direction of the movement restricting groove 5e is along the axial direction A. The distal end of the male screw member 31 is inserted into the movement restricting groove 5e.

  The moving body mounting portion 7 is arranged in the internal space 2ah of the cylindrical portion 2a. Further, the moving body mounting portion 7 is inserted into the through hole 6d of the first moving body 6 and the through hole 5d of the second moving body 5.

  The moving body mounting portion 7 has a cylindrical male screw member 7a, a screw member 7b, and a male screw member 7c. The cylindrical male screw member 7a has a cylindrical shape having a through hole. A male screw portion 7aa is formed on a cylindrical outer peripheral portion of the cylindrical male screw member 7a. The male screw portion 7aa is screwed with the female screw portion 5f of the second moving body 5.

  A screw hole 7ab is formed on one side of the male screw portion 7aa. The screw hole 7ab extends from the outer peripheral surface of the cylindrical male screw member 7a to a through hole of the cylindrical male screw member 7a. A male screw member 7c is screwed into the screw hole 7ab. The tip of the male screw member 7c protrudes into the through hole of the cylindrical male screw member 7a.

  An annular groove 7ac is formed on the outer peripheral surface of the cylindrical male screw member 7a on the side opposite to the male screw portion 7aa with respect to the screw hole 7ab. The distal end of the male screw member 32 is inserted into the annular groove 7ac.

  On the other side of the male screw portion 7aa, a hexagonal bolt portion 7ad is formed on the cylindrical outer peripheral portion of the cylindrical male screw member 7a.

  The screw member 7b has a shaft portion 7ba (FIG. 2B) and a head portion 7bb. The shaft portion 7ba has an outer diameter smaller than the inner diameter of the through hole of the cylindrical male screw member 7a. A male screw portion 7baa is formed at the tip of the shaft portion 7ba.

  An annular groove 7bab (FIG. 2B) is provided on the outer peripheral surface of the shaft portion 7ba. The annular groove 7bab is disposed closer to the head 7bb than the male screw portion 7ac. The outer diameter of the head 7bb is larger than the outer diameter of the shaft portion 7ba and larger than the inner diameter of the through hole of the cylindrical male screw member 7a.

  The shaft portion 7ba of the screw member 7b is inserted into a through hole of the cylindrical male screw member 7a. In this state, the head 7bb is located outside the through hole of the cylindrical male screw member 7a, and the male screw portion 7baa protrudes from the through hole of the cylindrical male screw member 7a. Therefore, the male screw portion 7baa is exposed from the cylindrical male screw member 7a.

  In this state, the tip of the male screw member 7c is inserted into the annular groove 7bab of the shaft portion 7ba.

As shown in FIG. 2 (A), (B), the interior space 2ah of the cylindrical portion 2a is provided with a large diameter space portion 2aa _1, the small diameter space 2aa _2, and a female screw (female screw portion) 2d Have. Large diameter space of the inner space 2ah 2aa ₁ is located at the tip of the cylindrical portion 2a, and is open to the external space of the cylindrical portion 2a. Small space of the inner space 2ah 2aa _2, rather than the large diameter space portion 2aa ₁ located in the support portion 2b side, and communicates with the large diameter space portion 2aa _1. The small diameter space 2aa ₂ has a smaller diameter than the large diameter space portion 2aa _1. Female screw 2d communicates with the small diameter space 2aa _2, and are located in the support portion 2b side of the small diameter space 2aa _2. The female screw 2d is formed to extend from the cylindrical portion 2a along the axial direction A into the support portion 2b.

  Each of the first moving body 6, the second moving body 5, and the moving body mounting portion 7 is arranged in the internal space 2ah of the tubular portion 2a. At least a part of the main body 5c of the second moving body 5 is inserted into the through hole 6d of the first moving body 6. In this state, the distal end of the male screw member 31 attached to the first flange portion 6a of the first moving body 6 is inserted into the movement regulating groove 5e of the second moving body 5. Thereby, the moving range of the second moving body 5 along the axial direction A with respect to the first moving body 6 is restricted.

  The cylindrical male screw member 7a is inserted into both the through hole 6d of the first moving body 6 and the through hole 5d of the second moving body 5. In this state, the male screw portion 7aa of the cylindrical male screw member 7a is screwed with the female screw portion 5f of the second moving body 5. For this reason, by rotating the cylindrical male screw member 7 a relatively around the axial direction A with respect to the second moving body 5, the cylindrical male screw member 7 a advances and retreats in the axial direction A with respect to the second moving body 5. It is possible.

  The distal end of the male screw member 32 is inserted into the annular groove 7ac of the cylindrical male screw member 7a. Thereby, the cylindrical male screw member 7 a is attached to the first moving body 6 so as to be rotatable with respect to the first moving body 6 and not move in the axial direction A with respect to the first moving body 6.

  The shaft portion 7ba of the screw member 7b is inserted into the through hole of the cylindrical male screw member 7a. In this state, the distal end of the male screw member 7c is inserted into the annular groove 7bab of the shaft portion 7ba. Thereby, the screw member 7b is attached to the cylindrical male screw member 7a so as to be rotatable with respect to the cylindrical male screw member 7a and not to be able to move in the axial direction A with respect to the cylindrical male screw member 7a.

  The male screw portion 7baa of the moving body mounting portion 7 extends along the axial direction A and is screwed into the female screw 2d. Thereby, the moving body mounting portion 7 is mounted on the tool main body 2 along the axial direction A. By rotating the screw member 7b relative to the tool main body 2 about the axial direction A, the screw member 7b can advance and retreat in the axial direction A with respect to the tool main body 2.

In a state where the moving body mounting portion 7 is attached to the tool body 2, at least a portion of the body portion 6c of the first moving member 6 is positioned on the small diameter space 2aa _2. The entire first flange portion 6a of the first moving member 6 in this state is positioned in the large diameter space portion 2aa _1.

  In this state, the tip of the male screw member 33 screwed into the screw hole 2ag of the cylindrical portion 2a is inserted into the groove 6g formed in the main body 6c of the first moving body 6. This prevents the first moving body 6 from rotating about the axial direction A with respect to the tool body 2. For this reason, when the male screw portion 7baa is screwed into the female screw 2d, the first movable body 6 is prevented from rotating around the axial direction A together with the movable body mounting portion 7. The insertion range of the first moving body 6 in the axial direction A with respect to the tool body 2 is restricted by inserting the tip of the male screw member 33 into the groove 6g.

The first flange portion 6a is arranged so as to support the first elastic portion 3b from the inner peripheral side of the tool body 2. The first flange portion 6a, the inner circumferential side may be in contact, also the first blade section even when no contact is inserted state of the first resilient portion 3b in a state of being inserted into the large diameter space portion 2aa ₁ It suffices if the first elastic portion 3b is arranged so as to be in contact with the inner peripheral side when the third elastic portion 3a moves in the radial direction. Further, the first inclined surface 6b may be arranged at a position where the first flange portion 6a supports the first elastic portion 3b. In this case, the first moving body 6 supports the first elastic portion 3b at the outer peripheral end of the first inclined surface 6b from the inner peripheral surface side.

The second flange portion 5a is arranged so as to support the second elastic portion 4b from the inner peripheral side of the tool main body 2. The second flange portion 5a, a large diameter space portion in a state of being inserted into 2aa ₁ may be in contact with the inner periphery of the second elastic portion 4b, also inserted second blade portions even when no contact in the state It suffices that the second elastic portion 4b be disposed so as to be in contact with the inner peripheral side of the second elastic portion 4b when moving in the radial direction. Further, the second inclined surface 5b may be disposed at a position where the second flange portion 5a supports the second elastic portion 4b. In this case, the second movable body 5 supports the second elastic portion 4b at the outer peripheral end of the second inclined surface 5b from the inner peripheral surface side.

  The first and second moving bodies 6 and 5 can be moved in the axial direction A with respect to the moving body mounting portion 7. Specifically, the second moving body 5 can be moved in the axial direction A with respect to the moving body mounting portion 7 from the state shown in FIG. The movement of the second moving body 5 is possible by rotating the cylindrical male screw member 7a relatively to the second moving body 5.

  By the movement of the second moving body 5 in the axial direction A, the position at which the second moving body 5 supports the second elastic portion 4b of the second cutter blade 4 can be changed as shown in FIG. Thereby, the strength with which the second blade portion 4a of the second cutter blade 4 is pressed against the edge of the through hole provided in the workpiece can be changed.

  In addition, by rotating the screw member 7b of the moving body mounting portion 7 about the axial direction A from the state shown in FIG. 2B, the screw member 7b is moved relative to the tool body 2 as shown in FIG. Thus, the cylindrical portion 2a can be moved along the axial direction A to the distal end side. With the movement of the screw member 7b, the cylindrical male screw member 7a and the first moving body 6 can be moved to the distal end side of the cylindrical portion 2a.

  By the movement of the first moving body 6 in the axial direction A, the position at which the first moving body 6 supports the first elastic portion 3b of the first cutter blade 3 can be changed. Thereby, the strength with which the first blade portion 3a of the first cutter blade 3 is pressed against the edge of the through hole provided in the workpiece can be changed.

  At this time, by rotating the second moving body 5 with respect to the cylindrical male screw member 7a, it is possible to move the second moving body 5 along the axial direction A relatively with respect to the cylindrical male screw member 7a. it can.

  Next, a configuration of an apparatus for chamfering and deburring holes using the tool 1 of the present embodiment will be described with reference to FIG.

  As shown in FIG. 5, the hole chamfering and deburring apparatus 10 of the present embodiment rotates the tool 1 shown in FIGS. 1 to 4 around the axial direction A and at least along the axial direction A. It has drive units 12 to 16 for moving forward and backward.

  The hole chamfering and deburring apparatus 10 mainly includes a holding mechanism 11, a moving mechanism 12, a pedestal 13, a mounting section 14, a rotation drive source 15, and a movement drive source 16. ing. The holding mechanism 11 can rotatably hold the device mounting portion 2c of the tool 1 shown in FIGS. The moving mechanism 12 supports the holding mechanism 11 so as to be movable in the direction of arrow D (vertical direction in the figure). The base unit 13 supports the moving mechanism unit 12 so as to be movable in an arrow E direction (left-right direction in the figure) and a depth direction (direction orthogonal to both the arrow D direction and the arrow E direction) in the figure. I have. The mounting portion 14 is a portion on which the workpieces 101 and 102 are mounted, and is disposed on the base portion 13.

  The rotation drive source 15 provides a driving force for rotating the tool 1 about the axial direction A. The movement drive source 16 provides a driving force for moving the moving mechanism unit 12 with respect to the base unit 13 and a driving force for moving the holding mechanism unit 11 with respect to the moving mechanism unit 12. . The rotary drive source 15 and the moving drive source 16 may be the same drive source. The moving drive source 16 applies a driving force to the moving mechanism unit 12 to move the holding mechanism unit 11 and a driving force to the base unit 13 to move the moving mechanism unit 12. It may be divided into a driving source.

  By attaching the tool 1 to the apparatus 10, the tool 1 can be rotated and moved in the direction of arrow D (vertical direction in the figure), the direction of arrow E (horizontal direction in the figure), and the depth direction in the figure.

  Next, a method of chamfering and deburring edges of two through holes having different diameters provided coaxially on a workpiece using the hole chamfering and deburring apparatus of the present embodiment will be described with reference to FIGS. This will be described with reference to FIG.

  As shown in FIG. 6, through holes 101a and 102a are formed in each of the workpieces 101 and 102 by a drill or the like. The through holes 101a and 102a are arranged coaxially with each other and have mutually different diameters. Specifically, the diameter R1 of the through hole 101a is larger than the diameter R2 of the through hole 102a.

  In chamfering and deburring, the tip of the cylindrical portion 2a of the tool 1 is inserted into the through hole 101a while the tool 1 is rotated. At this time, the second blade portion 4a passes through the through hole 101a without hitting the workpiece 101. Thereafter, the inclined surface (cutting edge) 3aa of the first blade portion 3a is pressed against the edge on the one surface side of the through hole 101a. As a result, chamfering and deburring of the edge on the one surface side of the through hole 101a are performed. When the difference between the diameters of the through holes 101a and 102a is small, the second blade portion 4a may pass while rubbing the through hole 101a. In this case, before the first blade portion 3a is machined, only a small chamfering process or a light deburring process is performed on the through hole 101a, so that there is no problem in machining.

  Thereafter, the cylindrical portion 2a of the tool 1 is further pushed into the through hole 101a. The first elastic portion 3b is elastically deformed by the pushing force at this time, and the first blade portion 3a is pushed into the inner peripheral side of the cylindrical portion 2a. Thereby, the cylindrical portion 2a can easily pass through the through hole 101a.

  As shown in FIG. 7, the first blade portion 3a that has passed through the through hole 101a is located on the other surface side of the workpiece 101, and returns so as to protrude from the outer peripheral surface of the cylindrical portion 2a. Thereafter, a force for pulling out the cylindrical portion 2a from the through hole 101a is applied to the tool 1. Thereby, the inclined surface (cutting edge) 3ab of the first blade portion 3a is pressed against the edge on the other surface side of the through hole 101a. Thereby, the edge on the other surface side of the through hole 101a is chamfered and deburred.

  As shown in FIG. 8, thereafter, while the tool 1 is being rotated, the tip of the cylindrical portion 2a of the tool 1 is inserted into the through hole 102a. At this time, the inclined surface (cutting edge) 4aa of the second blade portion 4a is pressed against the edge on the one surface side of the through hole 102a. As a result, chamfering and deburring of the edge on the one surface side of the through hole 102a are performed.

  Thereafter, the cylindrical portion 2a of the tool 1 is further pushed into the through hole 102a. The second elastic portion 4b is elastically deformed by the pushing force at this time, and the second blade portion 4a is pushed into the inner peripheral side of the cylindrical portion 2a. Thereby, the cylindrical portion 2a can easily pass through the through hole 102a.

  As shown in FIG. 9, the second blade portion 4a that has passed through the through hole 102a is located on the other surface side of the workpiece 102, and returns so as to protrude from the outer peripheral surface of the cylindrical portion 2a. Thereafter, a force for pulling out the cylindrical portion 2a from the through hole 102a is applied to the tool 1. Thereby, the inclined surface (cutting edge) 4ab of the second blade portion 4a is pressed against the edge on the other surface side of the through hole 102a. Thereby, the edge on the other surface side of the through hole 102a is chamfered and deburred.

  Thereafter, the cylindrical portion 2a of the tool 1 is pulled out from the through hole 102a. At this time, the second elastic portion 4b is elastically deformed by the pulling force, and the second blade portion 4a is pushed into the inner peripheral side of the cylindrical portion 2a. Thereby, the cylindrical portion 2a can easily pass through the through hole 102a.

  Further, the cylindrical portion 2a of the tool 1 is pulled out from the through hole 101a. At this time, the first elastic portion 3b is elastically deformed by the pulling force, and the first blade portion 3a is pushed into the inner peripheral side of the cylindrical portion 2a. Thereby, the cylindrical portion 2a can easily pass through the through hole 101a.

  As described above, chamfering and deburring of the edge portions on the one surface side and the other surface side of the through holes 101a and 102a of the workpieces 101 and 102 are performed.

Next, the operation and effect of the present embodiment will be described.
According to the present embodiment, as shown in FIG. 2A, the outer diameter (radius RB) of the second blade 4a is smaller than the outer diameter (radius RA) of the first blade 3a. Therefore, as shown in FIGS. 6 to 9, even if the two through-holes 101 a and 102 a arranged coaxially have different hole diameters R 1 and R 2, the chamfering and deburring of the large-diameter R 1 through-hole 101 a are performed first. The first blade 3a can perform the chamfering and deburring of the through hole 102a having the small diameter R2 with the second blade 4a. Even when the two through-holes 101a and 102a arranged coaxially have different hole diameters R1 and R2, chamfering and deburring work can be performed.

  Further, as shown in FIG. 2B, the moving body mounting portion 7 is mounted on the tool main body 2 along the axial direction A of the cylindrical portion 2a. The first and second moving bodies 6 and 5 can be moved in the axial direction A only by the operation of moving the first and second moving bodies 6 and 5 in the axial direction A. Then, by the movement of the first and second moving bodies 6, 5 in the axial direction A, the first and second moving bodies 6, 5 respectively support the first and second elastic portions 3b, 4b (that is, the fulcrum). Can be changed, and the pressing strength of the first and second cutter blades 3, 4 can be changed. As described above, it is possible to change the pressing strength of each of the first and second cutter blades 3 and 4 by a simple operation of moving the moving body mounting portion 7 in the axial direction A with respect to the tool main body 2. Become. As a result, even when the hole diameters R1 and R2 of the two coaxially arranged through holes 101a and 102a are different from each other, the pressing strength of each of the first and second cutter blades 3 and 4 is reduced by the respective through holes 101a and 102a. It is easy to set the optimum strength.

  Further, as shown in FIG. 1, the second blade portion 4a is disposed closer to the distal end of the cylindrical portion 2a than the first blade portion 3a. Thus, even when the two coaxially disposed through holes 101a and 102a have different hole diameters R1 and R2, the first blade portion 3a performs chamfering and deburring of the large diameter R1 through hole 101a on the front side. Further, chamfering and deburring of the through hole 102a having the small diameter R2 on the back side can be performed by the second blade portion 4a.

  Further, as shown in FIG. 1, a plurality of first cutter blades 3 are provided for one cylindrical portion 2a. Thereby, the plurality of first blade portions 3a can perform chamfering and deburring of the through hole 101a.

  Further, as shown in FIG. 1, a plurality of second cutter blades 4 are provided for one cylindrical portion 2a. Thereby, the plurality of second blade portions 4a can perform chamfering and deburring of the through hole 102a.

  Further, as shown in FIG. 2B, the moving body mounting portion 7 has a male screw portion (one screw portion) 7baa, and the tool body 2 has a female screw (other screw portion) 2d that meshes with the male screw portion 7baa. Have. By screwing the male screw portion 7baa into the female screw 2d in the axial direction A, the first moving body 6 moves in the axial direction A with respect to the tool main body 2. Accordingly, the pressing strength of the first cutter blade 3 can be changed by a simple operation of screwing the male screw portion 7baa and the female screw 2d together in the axial direction A.

  Further, as shown in FIG. 2B, a male screw portion 7aa is provided on the outer peripheral portion of the moving body mounting portion 7. The second moving body 5 has a through hole 5d extending in the axial direction A, and has a female screw portion 5f on the inner surface of the through hole 5d. By screwing the male screw portion 7aa into the female screw portion 5f in the axial direction A, the second moving body 5 moves in the axial direction A with respect to the tool main body 2. Thereby, the pressing strength of the second cutter blade 4 can be changed by a simple operation of screwing the male screw portion 7aa into the female screw portion 5f in the axial direction A.

  As shown in FIG. 2, the first moving body 6 has a first flange portion 6a that protrudes on the outer peripheral side in the axial direction A, and the outer peripheral end of the first flange portion 6a supports the first elastic portion 3b. ing. The second moving body 5 has a second flange portion 5a projecting toward the outer peripheral side in the axial direction A, and the outer peripheral end of the second flange portion 5a supports the second elastic portion 4b. With such a simple configuration in which the first and second flange portions 6a and 5a are provided, the first and second elastic portions 3b and 4b can be supported.

  As shown in FIG. 2B, a first inclined surface 6b is provided by cutting a part of the first flange portion 6a from the inner peripheral side to the outer peripheral end. The first moving body 6 supports the first elastic portion 3b at the outer peripheral end of the first inclined surface 6b. By forming the first inclined surface 6b by cutting off a part of the first flange portion 6a, the contact portion between the first moving body 6 and the first elastic portion 3b is reduced, and the movable range of the first elastic portion 3b is reduced. Can be expanded.

  As shown in FIG. 2B, the first flange portion 6a has a shape that does not come into contact with the second elastic portion 4b even when the second elastic portion 4b is elastically deformed. Specifically, this is a case where the first and second cutter blades 3 and 4 are arranged to be shifted from each other by 90 ° in the circumferential direction of the cylindrical portion 2a, and the first and second flange portions 6a and 5a When both have a substantially rectangular shape, the long side of the substantially rectangular shape of the first flange portion 6a is arranged to be orthogonal to the long side of the substantially rectangular shape of the second flange portion 5a. This prevents the first flange portion 6a from obstructing the elastic deformation of the second elastic portion 4b.

  As shown in FIG. 2B, a second inclined surface 5b is provided by cutting a part of the second flange portion 5a from the inner peripheral side to the outer peripheral end. The second moving body 5 supports the second elastic portion 4b at the outer peripheral end of the second inclined surface 5b. By forming the second inclined surface 5b by cutting off a part of the second flange portion 5a in this manner, the contact portion between the second moving body 5 and the second elastic portion 4b is reduced, and the movable range of the second elastic portion 4b is reduced. Can be expanded.

  As shown in FIG. 2B, the second flange portion 5a has a shape that does not come into contact with the first elastic portion 3b even if the first elastic portion 3b is elastically deformed. This prevents the second flange portion 5a from obstructing the elastic deformation of the first elastic portion 3b.

  As shown in FIG. 1, both the first elastic portion 3b and the second elastic portion 4b are leaf springs. This makes it possible to change the pressing strength of each of the first and second cutter blades 3 and 4 by changing the portion supporting the plate spring with a simple configuration of the plate spring.

  As shown in FIG. 5, the hole chamfering and deburring apparatus 10 of the present embodiment has the tool 1 of the present embodiment shown in FIGS. 1 to 4, and has two coaxially arranged tools. Even when the hole diameters R1 and R2 of the through holes 101a and 102a are different, chamfering and deburring can be performed.

  In the above description, the case where the moving body mounting portion 7 has the male screw portion 7baa and the tool main body 2 has the female screw 2d has been described. 2, a male screw to be screwed with the female screw may be formed.

  In the above description, the case where the moving body mounting portion 7 has the male screw portion 7baa and the tool main body 2 has the female screw 2d has been described, but the moving body mounting portion 7 is attached to the tool main body 2 along the axial direction A. What is necessary is just to be able to be attached and to be able to move the first and second moving bodies 6 and 5 in the axial direction A, and for example, a mechanism using a ratchet mechanism may be used.

  In the above description, the leaf spring has been described as the first and second elastic portions 3b and 4b. However, the first and second elastic portions 3b and 4b are not limited to this, and the first and second blade portions 3a are not limited thereto. , 4a can be supported on the tool body 2 so as to be movable in the radial direction of the cylindrical portion 2a.

  In the above description, the case where each of the first and second cutter blades 3 and 4 is two has been described. However, one or three or more of the first and second cutter blades 3 and 4 are each formed of the cylindrical portion 2a. They may be arranged at intervals along the circumferential direction.

  The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Chamfering and deburring tool, 2 Tool main body, 2a cylindrical portion, 2aa ₁ large diameter space portion, 2aa ₂ small diameter space portion, 2aa First portion of first groove portion, 2ab Second portion of first groove portion, 2ac, 2af , 6e, 6f, 7ab screw hole, 2ad first portion of second groove portion, 2ae second portion of second groove portion, 2ah internal space, 2b support portion, 2c device mounting portion, 2d female screw, 3rd cutter blade, 3a first blade portion, 3aa, 4aa, 5b, 6b inclined surface, 3b first elastic portion, 4 second cutter blade, 4a second blade portion, 4b second elastic portion, 5 second moving body, 5a second flange Part, 5b second inclined surface, 5c, 6c body part, 5d, 6d, 101a, 102a through hole, 5e, 6g movement restriction groove, 5f female screw part, 6 first moving body, 6a first flange part, 6b 1 inclined surface, 7 moving body mounting part, 7a Cylindrical male screw member, 7aa, 7baa male screw portion, 7ad hexagon bolt portion, 7b screw member, 7ba shaft portion, 7bab annular groove, 7bb head, 7c, 31, 32, 33 male screw member, 8 first holder, 8a, 9a screw, 8b, 9b pressing member, 9 second holder, 10 chamfering / burring-removing device, 11 holding mechanism, 12 moving mechanism, 13 base, 14 placement, 15 rotation drive source, 16 movement drive Source, 101, 102 Workpiece.

Claims (13)

A tool body having a cylindrical portion having an internal space,
A first blade portion protruding from an outer peripheral portion of the cylindrical portion of the tool body; a first elastic member connected to the first blade portion and elastically deformable so that the first blade portion moves toward the internal space; At least one first cutter blade comprising:
A first moving body that supports the first elastic portion from an inner peripheral side of the tool main body;
A second blade portion protruding from an outer peripheral portion of the cylindrical portion of the tool main body; and a second elastic member connected to the second blade portion and elastically deformable so that the second blade portion moves toward the internal space. At least one second cutter blade comprising:
A second moving body that supports the second elastic portion from an inner peripheral side of the tool main body;
A moving body mounting portion that is mounted on the tool body along the axial direction of the cylindrical portion, and that moves the first moving body and the second moving body in the axial direction;
The outside diameter of the second blade portion is minor than the outer peripheral diameter of the first blade section,
A tool, wherein the first moving body and the second moving body are supported by the moving body mounting portion so as to be relatively movable along the axial direction . The internal space is open at a tip of the cylindrical portion,
The tool according to claim 1, wherein the second blade portion is disposed closer to a distal end of the tubular portion than the first blade portion.   The tool according to claim 1 or 2, wherein the at least one first cutter blade is a plurality of first cutter blades.   The tool according to any one of claims 1 to 3, wherein the at least one second cutter blade is a plurality of second cutter blades. The moving body mounting portion has one screw portion, and the tool body has the other screw portion that meshes with the one screw portion,
The screw according to any one of claims 1 to 4, wherein the first moving body is moved in the axial direction with respect to the tool body by screwing the one screw part and the other screw part together in the axial direction. Tools. A male screw portion is provided on an outer peripheral portion of the moving body mounting portion,
The second moving body has a through hole extending in the axial direction, and has a female screw portion on an inner surface of the through hole,
The tool according to any one of claims 1 to 5, wherein the second moving body moves in the axial direction with respect to the tool main body by screwing the male screw portion into the female screw portion in the axial direction. . The first movable body has a first flange portion that protrudes toward the outer peripheral side in the axial direction, and an outer peripheral end of the first flange portion supports the first elastic portion,
7. The second moving body according to claim 1, wherein the second movable body has a second flange portion that protrudes to the outer peripheral side in the axial direction, and an outer peripheral end of the second flange portion supports the second elastic portion. 8. A tool according to any one of the preceding claims. A first inclined surface is provided by cutting a part of the first flange portion from the inner peripheral side to the outer peripheral end,
The tool according to claim 7, wherein the first movable body supports the first elastic portion at the outer peripheral end of the first inclined surface.   The tool according to claim 7, wherein the first flange portion has a shape that does not come into contact with the second elastic portion even when the second elastic portion is elastically deformed. A second inclined surface is provided by cutting a part of the second flange portion from the inner peripheral side to the outer peripheral end,
The tool according to claim 7, wherein the second movable body supports the second elastic portion at the outer peripheral end of the second inclined surface.   The tool according to claim 7, wherein the second flange portion has a shape that does not come into contact with the first elastic portion even when the second elastic portion is elastically deformed.   The tool according to any one of claims 1 to 10, wherein at least one of the first elastic portion and the second elastic portion is a leaf spring. The tool according to any one of claims 1 to 12,
A drive unit for rotating the tool about the axial direction and moving the tool forward and backward along the axial direction.

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