Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C3/00—Milling particular work; Special milling operations; Machines therefor
  • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
  • B23C3/126—Portable devices or machines for chamfering edges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C5/00—Milling-cutters
  • B23C5/02—Milling-cutters characterised by the shape of the cutter
  • B23C5/12—Cutters specially designed for producing particular profiles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C3/00—Milling particular work; Special milling operations; Machines therefor
  • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C5/00—Milling-cutters
  • B23C5/02—Milling-cutters characterised by the shape of the cutter
  • B23C5/10—Shank-type cutters, i.e. with an integral shaft
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
  • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C2210/00—Details of milling cutters
  • B23C2210/02—Connections between the shanks and detachable cutting heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C2210/00—Details of milling cutters
  • B23C2210/03—Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C2210/00—Details of milling cutters
  • B23C2210/04—Angles
  • B23C2210/0407—Cutting angles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C2220/00—Details of milling processes
  • B23C2220/16—Chamferring
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23C—MILLING
  • B23C2240/00—Details of connections of tools or workpieces
  • B23C2240/08—Brazed connections

Definitions

• the present invention relates to a beveling tool, more commonly described as a router head for metal, which fits on standard power tools and forms the edge of a work piece more uniformly than previous tools by means of on a unique multiple blade and discharge channel cutting head design.
• the beveling machines of the related art include a drive unit and a power transmission unit in a main body having a handle and a spindle mounted on a head unit and rotated by power from the power transmission unit.
• a cutter head is mounted on the free end of the spindle and a flange plate is installed between the cutter and the spindle by means of a case, a guide shaft, and a ball bearing.
• the edge of a work piece is aligned with the cutter, the driving unit in the body is driven by a power transmission unit, and the driving force rotates the spindle through the power transmission unit.
• the cutter at the free end is rotated and machines the edge of the work piece while rotating.
• a chamfering cutter similar to the invention cutter for beveling machines includes a body with a shaft hole formed through the center, a plurality of cutter blades extending at regular intervals with a helix angle of 1 to 40 degrees around the shaft hole on the outer circumferential surface of the body while having both sides that are beveling sides, discharge grooves formed longitudinally between the cutter blades to discharge chips formed in beveling. As such, it is possible to discharge chips even if long plane chips are produced and to machine an edge uniformly when beveling.
• one objective of the present invention is to provide a beveling tool that can machine a surface to a uniform shape with a uniform surface whenever beveling a work piece.
• Another objective of the present invention is to provide a beveling tool that can easily discharge chips formed while beveling a work piece without generating sparks when discharging.
• Another objective of the present invention is to provide a beveling tool that can minimize damage to the cutting blades and reduce the work load when beveling.
• a beveling cutter may include: a body with a shaft hole formed through the center; a plurality of cutter blades arranged at predetermined distances on the
• a protruded post at the top of the cutter with a threaded hole for coupling to a bearing may be formed at a side of the shank, which is a main part of the present invention, and a threaded hole for coupling to an electric tool may be formed at the opposite side of the shank.
• the bearing on the top may be mounted on the protruded post by fitting the bearing onto the post and then tightening a fixing screw into the threaded hole.
• the radial primary relief angle and the radial secondary relief angle range from 10 to 20 degrees and from 25 to 35 degrees (or 35 to 45 degrees), respectively, there are advantages in that it is possible to reduce load generated while beveling a work piece and prevent machining interference and chattering by ensuring a sufficient gap between the work piece and the radial primary blades.
• FIG. 1 is a plan view showing a beveling cutter according to an
• FIG. 2 is a perspective view showing the combination status of a beveling cutter and a shank which are main parts of the present invention
• FIG. 3 is a plan view showing a beveling cutter according to another embodiment of the present invention.
• FIG. 4 is a perspective view showing the combination status of a beveling cutter and a shank which are main parts of the present invention.
• FIG. 5 Shows the beveling cutter mounted on a power tool and forming the interior and exterior edge of a work piece.
• FIG. 1 is a plan view showing a beveling cutter according to an
• FIG. 2 is a perspective view showing the combination status of a beveling cutter and a shank which are main parts of the present invention
• FIG. 3 is a plan view showing a beveling cutter according to another embodiment of the present invention
• FIG. 4 is a perspective view showing the combination status of a beveling cutter and a shank which are main parts of the present invention.
• Beveling tool 100 in the form of an embodiment of the present invention includes a body 10, a plurality of cutter blades 20 arranged at predetermined distances on the circumferential surface of the body 10, discharge grooves 30 formed longitudinally between the cutter blades 20 to discharge chips produced in beveling, and a shank 40 inserted in the shaft hole 5 of the body 10.
• the body 10, as shown in FIG. 1 has a shaft hole 5 formed through the center and six cutter blades 20 arranged at predetermined distances.
• the cutter blades 20 each has a radial primary blade 14 with a radial primary relief angle ranging from 10 to 20 degrees and a radial secondary blade 16 with a radial secondary relief angle ranging from 25 to 35 degrees.
• the width of the radial primary blade 14 ranges from 0.7 to 0.8mm and the width of the radial
• secondary blade 16 ranges from 2.2 to 2.3mm.
• the radial primary relief angle is selected to an optimal angle, 10 to 20 degrees, to reduce load in the beveling of a work piece (not shown).
• the optimal angle for the radial primary relief angle is selected to provide optimal conditions for breaking and cutting a work piece.
• Honed portions 12 are formed by honing a side of the radial primary blades 14 at an angle ranging from 1 to 45 degrees to prevent the cutter blades 20 from breaking or chattering. Although the honed portions 12 may be 0.05 to 0.2mm wide, it is preferable to make them 0.1mm wide.
• the radial secondary relief angle is selected to an optimal angle, 25 to 35 degrees, to prevent machining interference and chattering by ensuring a sufficient gap between a work piece and the radial primary blade 14 in beveling.
• the radial secondary relief angle is angle data based on various tests for smooth cutting.
• the cutter blades 20 are straight or with a helix angle and the edge angle is 15 to 60 degrees.
• the edge angle may be understood as the meaning of a beveling angle.
• the shank 40 is formed in a cylindrical shape with several steps needed to be inserted in the shaft hole 5 of the body 10 of the cutter 20.
• the shank 40 is inserted in the shaft hole 5 of the body 10 and then brazed, such that the joint 52 is formed.
• a protrusion 65 with a threaded hole 50 for coupling to a bearing 60 is formed at a side of the shank 40, and a threaded hole 90 for coupling to an electric tool is formed at the opposite side of the shank 40.
• the bearing 60 is mounted on the protrusion 65 by fitting the bearing 60 onto the protrusion 65 and then tightening a fixing bolt 70 into the threaded hole 50.
• a wrench portion 95 is formed at the center of the shank 40 for easy attachment/detachment of a beveling tool.
• FIGS. 3 and 4 Another embodiment of such a beveling tool in the present invention is different from the embodiment described above in that four cutter blades 20 are provided, as shown in FIGS. 3 and 4. Further, the radial secondary relief angle is selected within the range of 35 to 45 degrees, different from the embodiment described above. The radial secondary relief angle changes because four cutter blades 20 are provided. The other factors, including the radial primary relief angle, are similar to those in the embodiment described above, so a detailed description is not provided. The description below shows how to mount the beveling tool of the present invention with the configuration described above on an air tool or an electric tool and to bevel a work piece.
• the beveling tool 100 in the embodiment of the present invention is fastened to an air tool or an electric tool (not shown) by inserting and fitting a rotary shaft of the air tool or the electric tool into the threaded hole 90 at the opposite side of the shank 40.
• Chips (not shown) that are produced by the beveling surfaces of the cutter blades 20 are discharged through the discharge grooves 30 in beveling the work piece. Further, the cutter blades 20 are generally coated, so that the chips are easily discharged without damaging the surfaces of the cutter blades 20.
• the cutter blades 20 have the honed portion 12 on a side of the radial primary blade 14, the cutter blades 20 can be prevented from breaking and the surface finish of the work piece can be improved in beveling the work piece. Further, small particles are sintered in the honed portion 12, so that beveling can be implemented by the cutter blades with very sharp lines even in high-speed rotation while the lifespan of the cutter blades 20 can be
• the radial primary blade 14 has a radial primary relief angle ranging from 10 to 20 degrees, the load generated in beveling can be reduced. Further, since the radial primary blades 14 have the radial primary relief angle, it is possible to not only reduce damage to the cutter blades, but provide optimal conditions for cutting. Further, since the radial secondary relief angle of the radial secondary blade 16 connected with the radial primary blade 14 ranges from 25 to 35 degrees, a sufficient gap is ensured between the work piece and the radial primary blade 14 in beveling and thus machining interference and chattering can be prevented. In addition, the cutter blades 20 can smoothly move in the cutting direction due to the radial secondary relief angle. This embodiment of the present invention was configured to coincide with the demands of users by changing the number of the cutter blades to four. Further, the operation of the beveling tool according to this embodiment of the present invention is almost similar to that of the embodiment described above and thus not mentioned here.
• Beveling tools of the present invention are not limited to the
• the beveling tool of the present invention is available for various types of beveling machines equipped with a cutter, in addition to cutters for machining edges of a work piece and straight surfaces as well.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Milling Processes (AREA)
• Milling, Broaching, Filing, Reaming, And Others (AREA)
• Drilling Tools (AREA)

Priority Applications (7)

Applications Claiming Priority (4)

Publications (2)

Family

ID=48906473

Family Applications (1)

Country Status (9)

Families Citing this family (3)

Citations (11)

Family Cites Families (13)

• 2012
  • 2012-07-04 KR KR1020120073019A patent/KR101555040B1/ko active Active
• 2013
  • 2013-07-01 EP EP13742760.5A patent/EP2869956B1/en active Active
  • 2013-07-01 AU AU2013285687A patent/AU2013285687B2/en active Active
  • 2013-07-01 BR BR112014032946A patent/BR112014032946A2/pt not_active IP Right Cessation
  • 2013-07-01 ES ES13742760T patent/ES2715318T3/es active Active
  • 2013-07-01 WO PCT/NL2013/000038 patent/WO2014007609A1/en not_active Ceased
  • 2013-07-01 JP JP2015520085A patent/JP2015521959A/ja active Pending
  • 2013-07-01 CA CA2878058A patent/CA2878058C/en active Active
  • 2013-07-01 CN CN201380035194.2A patent/CN104540627A/zh active Pending

Patent Citations (11)

Also Published As

Similar Documents

Legal Events