CN111168131B - Cutter for removing burrs of crossed holes - Google Patents
Cutter for removing burrs of crossed holes Download PDFInfo
- Publication number
- CN111168131B CN111168131B CN202010026740.8A CN202010026740A CN111168131B CN 111168131 B CN111168131 B CN 111168131B CN 202010026740 A CN202010026740 A CN 202010026740A CN 111168131 B CN111168131 B CN 111168131B
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- cutter
- deburring
- tool
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- 238000005520 cutting process Methods 0.000 claims abstract description 49
- 230000007704 transition Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000003754 machining Methods 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003801 milling Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000006748 scratching Methods 0.000 abstract 1
- 230000002393 scratching effect Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 20
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 241001155961 Baris Species 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/28—Angles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/20—Deburring
Abstract
The invention provides a cutter for removing burrs of crossed holes, which comprises a cutter bar, a rotatable blade and a blade fixing piece, wherein the cutter bar is divided into a cylindrical part, a groove part and a circular table part, the groove part is positioned between the cylindrical part and the circular table part, the circular table part is provided with a first through hole deviating from the center of the cutter bar, the cylindrical part is provided with a fixing piece mounting hole, the first through hole and the mounting hole are coaxially arranged, the blade is provided with a second through hole for fixing rotation, and the fixing piece sequentially penetrates through the first through hole of the circular table part, the second through hole of the blade and the fixing piece mounting hole of the cylindrical part so as to fix the blade in the groove part. The cutter provided by the invention adopts a milling mode and the pop-up blade to participate in cutting, the blade is made of hard alloy, and has high hardness and good toughness, so that the service life of the cutter is prolonged, the surface quality of a workpiece is improved, the reliable burr removal can be ensured, the machining efficiency is high, the phenomenon of scratching the surface of the workpiece during the feed is effectively prevented, and the deburring effect and stability are improved by the arc-shaped blade.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a cutter for removing burrs of a crossed hole.
Background
Burrs are irregular metal parts such as various sharp corners and burrs which appear at the transition of the surface of a workpiece in metal machining, and are deformed metals which are partially left on the edges, corners, edges or machined surfaces of the workpiece when chips are separated from the workpiece in the cutting process. The burr is one of the common phenomena generated in metal cutting processing and is one of two problems which are not solved in the research of metal cutting theory so far. The hardening and dropping of burrs on the part is a source of crack initiation, and thus the burrs may also reduce the useful life of the workpiece. Because the diameter of the crankshaft oil hole is very small, if the burrs generated in the connection fall off, the oil hole can be blocked, and the serious result can be caused.
The working principle of the crankshaft is to convert horizontal motion into rotary motion in an automobile engine so as to push a vehicle to move, and the crankshaft is a key part of the automobile engine. In the processing of the crankshaft, the processing of the crankshaft inclined oil hole is a difficult point. The depth-diameter ratio and the drilling inclination of the inclined oil hole are large, and the inclined oil hole is intersected with the oil hole at the shaft neck. When the tool is machined to the joint portion along the feed motion, a plastic bending deformation and a plastic shear slip deformation are generated due to a low supporting strength of the material, thereby generating burrs. When the cross hole is machined, burrs which are inverted to the direction of the 1 st machined hole are generated at the cross part of the 1 st machined hole and the 2 nd machined hole when the 2 nd hole is drilled. The principle of cross-hole burr generation is shown in fig. 1.
The main materials of crankshafts are cast iron (ISO K) and steel (ISO P), and the workpieces are usually forged, cast or solid blanks. This results in high hardness and strength of the burr, which is not removed cleanly or even effectively with a conventional brush. Because the crankshaft oil hole is long and thin, the difficulty of manual deburring is high, the efficiency is low, and the quality is poor, and the surface of the oil hole is easily scratched by a common deburring chamfer cutter during feeding or deburring, so that the quality of the crankshaft is influenced.
Through the retrieval to prior art, the utility model discloses a cutter that burr was removed to thimble position for CN 207414505U is announced in the authorization, including cylindrical cutter and the connecting rod of setting in cylindrical cutter one end, cylindrical cutter's the other end is opened has round hole and two and is along radially running through and be the groove that the cross was arranged. The tool has the problems of low deburring processing quality, poor effect, scratch on the inner surface of a workpiece and the like, and can not effectively remove burrs with high hardness and strength.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to provide a tool for deburring intersecting holes.
The cutter for removing the burrs of the crossed holes comprises a cutter bar, a rotatable cutter blade and a cutter blade fixing piece, wherein the cutter bar is divided into a cylindrical portion, a groove portion and a circular table portion, the groove portion is located between the cylindrical portion and the circular table portion, the circular table portion is provided with a first through hole deviating from the center of the cutter bar, the cylindrical portion is provided with a fixing piece mounting hole, the first through hole and the mounting hole are coaxially arranged, the cutter blade is provided with a second through hole for fixing rotation, and the fixing piece sequentially penetrates through the first through hole of the circular table portion, the second through hole of the cutter blade and the fixing piece mounting hole of the cylindrical portion so as to fix the cutter blade in the groove portion.
Further, the insert includes a cutting portion having a length identical to that of the groove portion and a fixing portion having a second through hole.
Further, the cutting part is circular-arc-shaped and comprises a first circular arc surface, a second circular arc surface and a connecting curved surface, the connecting curved surface is connected with the first circular arc surface and the second circular arc surface, the first circular arc surface is higher than the second circular arc surface, the joint of the second circular arc surface and the connecting curved surface is a passivated cutter back, the joint of the first circular arc surface and the connecting curved surface is a cutting edge, the front angle gamma of the cutting edge is 5-10 degrees, the rear angle alpha of the cutting edge is 4-12 degrees, and the circular arc radius R of the cutting edge is 5-20 microns. The profile of blade adopts the arc shape, can make the radius of cutting by little grow when carrying out the burring cutting to more do benefit to the getting rid of burr, effectively prevent to produce the secondary burr.
Further, the fixing portion is a semi-cylindrical shape having a diameter of 2mm, and the second through hole has a diameter of 1 mm.
Further, the fixed part is a semi-cylindrical and transition connecting part with a right trapezoid cross section, the semi-cylindrical and the transition connecting part are integrally formed, the bevel edge of the transition connecting part is connected with the cutting part, and the diameter of the semi-cylindrical is 2 mm.
Further, the depth of the groove portion is larger than the radius of the cylindrical portion and smaller than the diameter of the cylindrical portion.
Furthermore, the blade pops out to be used for cutting off burrs when the cutter rotates forwards, and the blade retracts to the groove portion when the cutter rotates backwards, so that the inner wall cannot be scratched. When the burr area is approached quickly, the blade is rotated forward, the blade is ejected out and is abutted against the inner wall of the groove by means of centrifugal force, and the burr on the inner wall can be cut off by feeding motion.
Further, the fixing piece is a bolt, one end of the bolt is provided with a straight-line-shaped groove, the other end of the bolt is provided with threads, the middle section of the bolt is matched with the second through hole of the blade, and the fixing piece mounting hole of the cylindrical portion is a threaded hole matched with the threads. The part of the bolt, which is contacted with the second through hole of the blade, is a smooth surface.
Further, a secondary machining hole and a primary machining hole are formed at the joint of the cross hole, and the cutter is fed from the direction of the primary machining hole.
Further, the blade is made of hard alloy materials. The hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly high hardness and wear resistance, good burr removing capability and reduced phenomena of cutter damage, cutter changing and the like, thereby improving the processing efficiency and the processing quality.
Compared with the prior art, the invention has the following beneficial effects:
1. the cutter for removing the burrs of the crossed hole controls whether the blade is popped up or not by controlling the rotating direction, so that the inner wall of the oil hole is not scratched.
2. The cutter for removing the burrs of the crossed hole adopts pop-up milling, and solves the problems that the traditional manual deburring is low in efficiency, the deburring processing quality of a common brush or cutter is low, the effect is poor, the inner surface of a workpiece is scratched and the like.
3. The cutter for removing the burrs of the cross hole is characterized in that the cutting mode is milling, the ejection type blade is structurally used for cutting, the blade is made of hard alloy, the hardness is high, the toughness is good, the burrs can be reliably removed, the machining efficiency is high, the phenomenon that the surface of a workpiece is scratched when the cutter is fed is effectively prevented, the deburring effect and stability are improved due to the shape of the arc-shaped blade, and the strength, hardness and toughness of the blade are good, so that the service life of the cutter is prolonged, and the surface quality of the workpiece is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of cross-hole burr generation;
FIG. 2 is a perspective view of the cross-hole deburring tool of the present invention;
FIG. 3 is an exploded view of the cross-hole deburring tool of the present invention;
FIG. 4 is a perspective view of a blade of the present invention;
FIG. 5 is a front view of the blade of the present invention;
FIG. 6 is a right side view of the inventive blade;
FIG. 7 is a sectional view taken along line A-A of FIG. 5;
FIG. 8 is an enlarged view at B of FIG. 7;
FIG. 9 is a front view of the tool holder of the present invention;
FIG. 10 is a left side view of the tool bar of the present invention;
FIG. 11 is a top view of the tool holder of the present invention;
FIG. 12 is a schematic view of the working state of the cross-hole deburring tool of the present invention;
FIG. 13 is a schematic reverse feed of the present invention tool for cross-hole burr removal;
fig. 14 is a schematic forward feed view of a tool for removing cross-hole burrs according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 14, a tool for deburring of a cross hole includes a tool bar 1, a rotatable blade 2 and a blade holding member 3, the tool bar 1 is divided into a cylindrical portion 11, a groove portion 12 and a circular table portion 13, the groove portion 12 is located between the cylindrical portion 11 and the circular table portion 13, and the depth of the groove portion is larger than the radius of the cylindrical portion and smaller than the diameter of the cylindrical portion.
The circular table portion 13 is provided with a first through hole 131 deviating from the center of the cutter bar, the cylindrical portion 11 is provided with a fixing piece mounting hole 111, the first through hole 131 and the mounting hole 111 are coaxially and eccentrically arranged, the blade 2 is provided with a second through hole 21 for fixing rotation, and the fixing piece 3 sequentially passes through the first through hole 131 of the circular table portion, the second through hole 21 of the blade and the fixing piece mounting hole 111 of the cylindrical portion to fix the blade 2 in the groove portion 12. The cutter arbor is cylindrical, and the length of cutter arbor is d for the concave part groove depth of placing the blade is e, and the groove height is f, and the bottom surface in groove is g with the distance at cutter arbor center, and the diameter of cutter arbor is
Two holes are formed in the bottom of the cutter bar, threaded holes, namely fixing piece mounting holes 111, are formed above the groove portions and are eccentrically arranged, the distance from the center line of the cutter bar is i, and the distance from the bottom surface of the groove is j; recess portion below is first through-hole for place blade mounting 3 (here blade mounting 3 is the bolt), the one end of bolt sets up the straight type groove that can screw up with the screwdriver, and the other end sets up the screw thread, with the mounting hole cooperation of cylinder portion, the interlude cooperates with the second through-hole of blade, and the bolt is smooth surface with the position of blade second through-hole contact, has secondary operation hole and a processing hole in handing-over department in cross hole, and the cutter is from a processing hole direction feed.
The insert 2 comprises a cutting portion 22 and a fixing portion 23 having a second through hole 21, the length L of the cutting portion 22 being the same as the length of the groove portion 12. The cutting part 22 is arc-shaped and comprises a first arc surface 221, a second arc surface 222 and a connecting curved surface 223, the connecting curved surface 223 is connected with the first arc surface 221 and the second arc surface 222, the first arc surface 221 is higher than the second arc surface 222, the joint of the second arc surface 222 and the connecting curved surface 223 is a passivated cutter back 224, the joint of the first arc surface 221 and the connecting curved surface 223 is a cutting edge 225, the rake angle gamma of the cutting edge is 5-10 degrees, the relief angle alpha of the cutting edge is 4-12 degrees, the arc radius R of the cutting edge is 5-20 mu m, and the arc diameter is 5-20 mu m
Wherein the fixed part 23 has a diameter
Is a semi-cylindrical shape of 2mm, and the diameter of the second through-hole 21
Is 1mm and is used for placing a bolt for fixing. In addition, the fixing portion 23 may be divided into a semi-cylindrical shape formed integrally and a transition connection portion 231 having a right trapezoid cross section, and the oblique side of the transition connection portion 231 is connected to the cutting portion 22.
The profile of blade adopts the arc shape, can make the radius of cutting by little grow when carrying out the burring cutting to more do benefit to the getting rid of burr, effectively prevent to produce the secondary burr. The blade pops out to be used for cutting off burrs when the cutter rotates forwards, the blade retracts to the groove portion of the rotating shaft when the cutter rotates backwards, the outermost edge cannot exceed the outline of the rotating shaft, and the inner wall cannot be scratched. When the burr area is approached quickly, the blade is rotated forward, the blade is ejected out and is abutted against the inner wall of the groove by means of centrifugal force, and the burr on the inner wall can be cut off by feeding motion. Because the guiding of the burrs is reversed from the secondary processing direction to the primary processing direction, the cutting is carried out from the primary processing hole direction, the burrs can be conveniently removed,
pop-up means that the blade is placed eccentrically and the pop-up and the retraction of the blade are controlled by the difference in the rotational direction of the knife bar. Taking the blade placement mode herein as an example, when the cutter rotates forwards, the blade pops out, the back surface of the blade can be supported by the cutter rod, and the cutting edge of the blade cuts burrs. When the cutter is reversed, the blade is retracted into the groove or is not fully retracted, and cutting cannot be performed, and because no cutting edge exists, the back edge is passivated.
The invention relates to a cutter for removing burrs of a crossed hole for milling, wherein a blade is made of hard alloy materials. The hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly high hardness and wear resistance, good burr removing capability and reduced phenomena of cutter damage, cutter changing and the like, thereby improving the processing efficiency and the processing quality. When a conventional tool is fed, the diameter of the tool cannot be changed, so that the surface of a workpiece may be scratched when the tool is fed. The invention relates to a pop-up blade, which solves the problems. The power supply of cutter is the lathe of carrying out the drilling, so rotational speed and feed speed all can be very high, uses instruments such as carbide rotary file to deburr for ordinary manual work, and machining efficiency promotes greatly. The cutting mode and the structural particularity of the deburring cutter determine the characteristics of high processing efficiency and strong deburring capability. Structurally, the pop-up blade is adopted to participate in cutting, and the problem of deburring, such as incomplete deburring removal, low efficiency and the like, can be solved from the source.
Example 1
The cutter for removing the crossed hole burrs is different from a brush or a common deburring and chamfering cutter which is used for deburring in the traditional concept. The method specifically comprises the following steps: the cutter adopts a pop-up structure, and the rotation direction of the cutter is controlled to realize the pop-up and the retraction of the blade, so that the condition that the inner wall is scratched when the cutter is fed can be avoided; the blade is made of hard alloy materials, and has excellent performance for removing the intermittent cutting of high-strength burrs; the blade is arc-shaped, and the cutting radius is increased from small to large, so that the burr is removed more stably.
The invention discloses a tool for removing burrs of a cross hole, which is mainly used for removing burrs generated at the joint of the cross hole, belongs to the technical field of machining tools, and particularly relates to an oil passage cross hole of an engine crankshaft. This results in high hardness and strength of the burr, which is not removed cleanly or even effectively with a conventional brush. Because the crankshaft oil hole is long and thin, the difficulty of manual deburring is high, the efficiency is low, and the quality is poor, and the surface of the oil hole is easily scratched by a common deburring chamfer cutter during feeding or deburring, so that the quality of the crankshaft is influenced. In addition, the crankshaft is required to withstand alternating bending-torsional loads and high engine power, and therefore, higher strength, impact toughness, and wear resistance are required for the crankshaft material.
The experimental object is a crankshaft in a diesel engine of a certain model in great wall, the material is 40CrMo, the strength and the hardenability are high, the toughness is good, and the tensile strength sigma of the crankshaft isbGreater than 1080MPa, and hardness less than or equal to 217HB, as shown in FIG. 8. The inclined oil hole of the crankshaft is from a connecting rod journal to a main journal, the depth is 87mm, and the diameter is 7 mm. The straight oil hole is located the main journal, and length is 50mm, and the diameter is 7mm, and wherein the acute angle contained angle between oblique oilhole and the straight oilhole is 30 degrees, and two hole handing-over departments are straight oilhole centre department.
In the cross hole deburring tool adopted in the embodiment, the length L of the blade is 6mm, and the diameter of the circular arc profile
Is 6mm, the diameter of the bottom of the blade
Is 2 mm; the length d of the cutter bar is 30mm, the groove depth e is 3mm, the groove height f is 6mm, the distance g between the bottom surface of the groove and the center of the cutter bar is 0.5mm, and the diameter of the cutter bar
Is 5 mm. The specification of the threaded hole is M1 multiplied by 0.25, the distance i from the center line of the cutter bar is 1mm, and the distance j from the bottom surface of the groove is 1 mm. After the cutter rotates forwards, the blade is popped up, the maximum distance from the cutting edge to the rotation center of the cutter is 7mm, and the diameter of a fixing piece mounting hole 111 for placing a bolt is larger than that of the cutter
Is 1 mm. Since 40CrMo has high strength, the insert cutting edge rake angle is a little smaller, the cutting edge rake angle γ is 5 °, the cutting edge relief angle α is 5 °, and the cutting edge arc radius R is 10 μm.
The working process is as follows:
the oil hole is drilled at high speed, and the straight oil hole is machined firstly and then the inclined oil hole is machined. The department can be because of the not high burr that produces the straight oilhole of oblique oilhole process direction of support intensity of material at the handing-over, because the burr falls to straight oilhole, the hole depth of straight oilhole is less moreover, so the cutting feed processing comes the deburring in straight oilhole, the length of cutter also can be short a little like this to improve the precision and the stability of processing. There are acute angle and obtuse angle both sides in handing-over department, burr and oblique oil duct hole self at obtuse angle limit department are connected more firmly, and the holding power of burr this moment is big, and the burr and the oil duct hole junction of acute angle limit department are more weak, and the burr holding power is less, if adopt sharp angle limit department feed processing, the phenomenon of the burr that extrudees oblique oilhole even produced the anti-oblique oilhole can appear to the burr, so, selects obtuse angle department during the feed.
Firstly, the main shaft rotates reversely, the rotating speed is 1000r/min, and at the moment, the blade is retracted into the groove and rapidly fed to a position of 20 mm. At this time, the forward rotation is started, the rotating speed is 3000r/min, the feeding amount is 5mm/min, and after 1 minute, the cutter is already at the intersection center. And (3) setting the rotating speed to be 1000r/min and the feeding amount to be 1mm/min as the burrs at the acute angle position need to be removed and reducing the rotating speed and the feeding amount, and finishing the processing after 5 minutes. At the moment, the reverse rotation is started, and the cutter is rapidly withdrawn until the processing is finished. The cross hole burrs cleaned by the deburring cutter designed by the invention are extremely well removed, and the final use requirements can be completely met.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (7)
1. A cutter for removing burrs of crossed holes is characterized by comprising a cutter bar, a rotatable blade and a blade fixing piece, wherein the cutter bar is divided into a cylindrical portion, a groove portion and a circular table portion, the groove portion is located between the cylindrical portion and the circular table portion, the circular table portion is provided with a first through hole deviating from the center of the cutter bar, the cylindrical portion is provided with a fixing piece mounting hole, the first through hole and the mounting hole are coaxially arranged, a second through hole for fixing rotation is formed in the blade, and the fixing piece sequentially penetrates through the first through hole of the circular table portion, the second through hole of the blade and the fixing piece mounting hole of the cylindrical portion so as to fix the blade in the groove portion; when the cutter rotates forwards, the blade is popped out to cut burrs, and when the cutter rotates backwards, the blade is retracted to the groove part;
the blade comprises a cutting part and a fixing part with a second through hole, and the length of the cutting part is the same as that of the groove part; the cutting part is arc-shaped and comprises a first arc surface, a second arc surface and a connecting curved surface, the connecting curved surface is connected with the first arc surface and the second arc surface, the first arc surface is higher than the second arc surface, the joint of the second arc surface and the connecting curved surface is a passivated cutter back, the joint of the first arc surface and the connecting curved surface is a cutting edge, the front angle gamma of the cutting edge is 5-10 degrees, the rear angle alpha of the cutting edge is 4-12 degrees, and the arc radius R of the cutting edge is 5-20 mu m.
2. The tool for deburring of crossed holes of claim 1 wherein said retainer portion is semi-cylindrical with a diameter of 2mm and said second through hole has a diameter of 1 mm.
3. The tool for deburring of crossed holes according to claim 1, wherein said fixed portion is a semi-cylindrical and right trapezoid cross-sectional transition portion formed integrally, the oblique side of said transition portion is connected to the cutting portion, and the diameter of said semi-cylindrical portion is 2 mm.
4. The tool for deburring of crossed holes of claim 1 wherein the depth of said recessed portion is greater than the radius of the cylindrical portion and less than the diameter of the cylindrical portion.
5. The tool for deburring of intersecting holes of claim 1 wherein said fastener is a bolt having a straight slot at one end and a thread at the other end, the middle section engaging said second through hole of said insert, said fastener receiving hole of said cylindrical portion being a threaded hole engaging said thread.
6. The tool for deburring of intersecting holes of claim 1 wherein there is a secondary machined hole and a primary machined hole at the intersection of said intersecting holes, said tool being fed from the direction of the primary machined hole.
7. A tool for deburring of intersecting holes according to claim 1 wherein said insert is of cemented carbide material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911284053 | 2019-12-13 | ||
| CN201911284053X | 2019-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111168131A CN111168131A (en) | 2020-05-19 |
| CN111168131B true CN111168131B (en) | 2021-08-03 |
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ID=70624569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010026740.8A Expired - Fee Related CN111168131B (en) | 2019-12-13 | 2020-01-10 | Cutter for removing burrs of crossed holes |
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| Country | Link |
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| CN (1) | CN111168131B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355580B (en) * | 2020-10-29 | 2021-11-02 | 中国航发南方工业有限公司 | Burr removing process for high-temperature alloy case |
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| WO2016060153A1 (en) * | 2014-10-14 | 2016-04-21 | 株式会社キッツ | Intersecting-hole-deburring tool, intersecting-hole-deburring method, and rotary valve machined using same |
| CN106825700A (en) * | 2015-12-16 | 2017-06-13 | 好优利工具有限公司 | Method for the deburring of intersecting drilled edge and the instrument for implementing the method |
| CN107614173A (en) * | 2015-09-24 | 2018-01-19 | 三菱日立工具株式会社 | Indexable insert blade type cutting element |
| CN206997953U (en) * | 2017-08-14 | 2018-02-13 | 无锡拉尔夫刀具有限公司 | The anti-scraper of expansion |
| CN207414505U (en) * | 2017-08-29 | 2018-05-29 | 宁波吉烨汽配模具有限公司 | The cutter of flash removed is removed in a kind of thimble position |
| CN108544031A (en) * | 2018-04-24 | 2018-09-18 | 徐州重型机械有限公司 | A kind of big face machine of folding aperture, which adds, counter scrapes cutter |
| CN208825750U (en) * | 2018-09-04 | 2019-05-07 | 常州鑫佳顺工具制造有限公司 | A kind of anti-scraper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482979A (en) * | 2018-12-26 | 2019-03-19 | 吉林博仁科技有限责任公司 | A kind of deburrer of oil injector seat phase perforation |
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2020
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| CN102133662A (en) * | 2011-01-11 | 2011-07-27 | 重庆红宇精密工业有限责任公司 | Tool for processing burrs at through position of through hole |
| WO2016060153A1 (en) * | 2014-10-14 | 2016-04-21 | 株式会社キッツ | Intersecting-hole-deburring tool, intersecting-hole-deburring method, and rotary valve machined using same |
| CN104827128A (en) * | 2015-06-03 | 2015-08-12 | 铜陵市永生机电制造有限责任公司 | Tool for manually removing burrs of cross hole |
| CN204818304U (en) * | 2015-07-17 | 2015-12-02 | 重庆长安汽车股份有限公司 | A burring copying tool for intersecting hole |
| CN107614173A (en) * | 2015-09-24 | 2018-01-19 | 三菱日立工具株式会社 | Indexable insert blade type cutting element |
| CN106825700A (en) * | 2015-12-16 | 2017-06-13 | 好优利工具有限公司 | Method for the deburring of intersecting drilled edge and the instrument for implementing the method |
| CN206997953U (en) * | 2017-08-14 | 2018-02-13 | 无锡拉尔夫刀具有限公司 | The anti-scraper of expansion |
| CN207414505U (en) * | 2017-08-29 | 2018-05-29 | 宁波吉烨汽配模具有限公司 | The cutter of flash removed is removed in a kind of thimble position |
| CN108544031A (en) * | 2018-04-24 | 2018-09-18 | 徐州重型机械有限公司 | A kind of big face machine of folding aperture, which adds, counter scrapes cutter |
| CN208825750U (en) * | 2018-09-04 | 2019-05-07 | 常州鑫佳顺工具制造有限公司 | A kind of anti-scraper |
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| CN111168131A (en) | 2020-05-19 |
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