CN112719824A - Method for manufacturing cemented carbide cutting tool and cutting tool manufactured by the method - Google Patents
Method for manufacturing cemented carbide cutting tool and cutting tool manufactured by the method Download PDFInfo
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- CN112719824A CN112719824A CN202110090309.4A CN202110090309A CN112719824A CN 112719824 A CN112719824 A CN 112719824A CN 202110090309 A CN202110090309 A CN 202110090309A CN 112719824 A CN112719824 A CN 112719824A
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- rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/06—Soldering, e.g. brazing, or unsoldering making use of vibrations, e.g. supersonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0607—Solder feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/085—Cooling, heat sink or heat shielding means
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Abstract
The invention discloses a method for manufacturing a hard alloy cutting tool and the cutting tool manufactured by the method, wherein the cutter shaft of the cutting tool is arranged into a multilayer structure, when the cutting tool is manufactured, brazing filler metal is uniformly laid on a blade mounting groove of a blade mounting block, then a blade is clamped on the blade mounting groove, the multilayer blade is fixedly mounted on the cutter shaft through the staggered arrangement of the structure block and the blade mounting block, then the brazing filler metal is melted through high-temperature treatment, and the cooled blade is fixed on the cutter shaft, so that the sequential molding is realized, and the mounting uniformity and the mounting strength of the blade on the cutter shaft are improved.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a manufacturing method of a hard alloy cutting tool and the cutting tool manufactured by the method.
Background
There are a wide variety of cemented carbide cutting tools and different classification methods. Classifying according to a processing mode: including turning tools, drill bits, boring tools, reamers, broaches, milling cutters, threading tools, gear cutters, numerical control tools, and the like. From single to multiple edge, from simple to complex;
in the prior art, firstly, a blade part made of hard alloy and a metal material of a main body part are welded and fixed to obtain a blade, and then the blade is fixed on a cutter shaft by welding, but in industrial production, the welding strength difference is strong and satisfactory due to small contact area of a welding position during welding, in addition, when a plurality of blades are arranged on one cutter shaft, the welding efficiency is low due to the welding and fixing carried out one by one, and the distribution uniformity of the blades on the cutter shaft cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a manufacturing method of a hard alloy cutting tool and the cutting tool prepared by the method.
The technical problems to be solved by the invention are as follows:
in industrial production, because the area of contact of welding position is less during the welding, lead to welding strength difference in addition to good luck, when having a plurality of blades on an arbor, the welded fastening that carries on one by one can lead to welding inefficiency again, and the blade can't obtain the guarantee at epaxial distribution uniformity of arbor.
The purpose of the invention can be realized by the following technical scheme:
a method for manufacturing a hard alloy cutting tool comprises the following steps:
the method comprises the following steps that firstly, a V-shaped groove and a V-shaped bulge of a hard alloy cutting tool are fixedly connected through heat treatment to obtain a cutting blade, and the cutting blade and a tool holder are fixed together through heat treatment to obtain the cutting blade;
secondly, a driving motor on the hard alloy cutting tool manufacturing device drives a vertical threaded rod to rotate, so that a limiting U-shaped block and a main sliding block are driven to adjust the height in the vertical direction, a first connecting rod is adjusted to be parallel to a transverse adjusting rod through a rotating cylinder, the position of a mounting seat of the rotating cylinder on the transverse adjusting rod is adjusted through a first driving cylinder, and when a brazing filler metal feeding head reaches the upper part of a blade mounting groove, the height of the brazing filler metal feeding head is further adjusted through a precision cylinder;
thirdly, opening an electromagnetic valve, inputting a preset amount of brazing filler metal powder into a powder feeding pipe, enabling the brazing filler metal powder to be gathered on a screen layer in a powder laying pipe, and then opening an ultrasonic generator to enable the brazing filler metal powder to uniformly fall into a blade mounting groove from the screen layer;
fourthly, transferring the blade assembled in the first step to the position above the blade mounting groove through a finger cylinder, further adjusting the position of the finger cylinder through a precision cylinder to enable a handle of the blade to be in contact with a brazing filler metal layer in the blade mounting groove, driving through a first driving cylinder to enable one side, close to the center of the blade mounting block, of a second radial limiting portion to be in butt joint with a strip-shaped blind hole formed in a first radial limiting portion, and fixing the position of the blade;
fifthly, superposing the structural block on the blade mounting block provided with the blade through a manipulator, superposing the blade mounting block not provided with the blade on the structural block through the manipulator, and repeating the operation from the second step to the fourth step;
sixthly, repeating the operations from the second step to the fifth step until the blade mounting blocks are provided with a preset number, locking the blade mounting blocks and the structural blocks through a central nut and side position nuts after superposing one structural block again, and performing high-temperature heating treatment on the locked whole to ensure that the brazing filler metal is cooled and cooled after being fully melted;
and seventhly, brazing the joint gap between the second circumferential limiting part and the fourth circumferential limiting part, and supplementing the gap to obtain the formed hard alloy cutting tool.
As a further scheme of the invention, the hard alloy cutting tool manufacturing device comprises an installation platform, and a brazing filler metal feeding device, a tool feeding device and a dust collecting device which are arranged around the installation platform;
the mounting platform comprises a bottom turntable and a cutter handle fixing piece fixedly mounted on the bottom turntable, a stepping motor is arranged at the bottom of the bottom turntable, and the stepping motor can drive the bottom turntable to rotate;
the cutter feeding device comprises two oppositely arranged installation blocks, a vertical supporting column and a vertical smooth rod are fixedly installed between the two installation blocks, a vertical threaded rod is rotatably installed between the two installation blocks, one end of the vertical threaded rod is fixedly connected with a shaft extending end of a driving motor, a vertical sliding rail is fixedly arranged on the vertical supporting column, a main sliding block is arranged on the vertical sliding rail in a sliding manner, two ends of the main sliding block are respectively and fixedly connected with two ends of the opening side of a limiting U-shaped block, the tail part of the limiting U-shaped block is sleeved on the vertical smooth rod and the vertical threaded rod, the limiting U-shaped block is in sliding connection with the vertical smooth rod and is in threaded fit with the vertical threaded rod, and the main sliding block can be driven to slide up and down along the vertical sliding rail;
a transverse adjusting rod is fixedly connected to one surface, opposite to the vertical sliding rail, of the main sliding block, a transverse sliding rail is arranged on the transverse adjusting rod, a rotary cylinder mounting seat is arranged on the transverse sliding rail in a sliding mode, a rotary cylinder is fixedly mounted on the rotary cylinder mounting seat, a first driving cylinder is fixedly mounted on the transverse adjusting rod, the end portion of a cylinder shaft of the first driving cylinder is fixedly connected with the rotary cylinder mounting seat, and the rotary cylinder mounting seat can be driven to slide back and forth along the transverse sliding rail through the first driving cylinder;
the rotary cylinder is connected with one end of a first connecting rod, the other end of the first connecting rod is fixedly connected with a vertical fine adjustment rod, and the vertical fine adjustment rod is perpendicular to the first connecting rod, two auxiliary mounting blocks are respectively fixed on two sides of one surface of the vertical fine adjustment rod, a fine adjustment slide rail is arranged between the two auxiliary mounting blocks, a strip-shaped hole which penetrates through the fine adjustment slide rail and the vertical fine adjustment rod is arranged on the fine adjustment slide rail along the extension direction of the fine adjustment slide rail, one end of a second connecting rod is arranged on the fine adjustment slide rail in a sliding way, a bulge penetrating through the strip-shaped hole is arranged at one end of the second connecting rod, which is connected with the fine adjustment slide rail in a sliding way, a precise cylinder is fixedly mounted at one end of the vertical fine adjustment rod, the cylinder shaft end part of the precise cylinder is fixedly connected with a bulge penetrating through the strip-shaped hole on the second connecting rod, and the second connecting rod can be driven to reciprocate along the fine adjustment slide rail through the precise cylinder;
and a finger cylinder is fixedly arranged at the other end of the second connecting rod.
As a further scheme of the invention, a dust cover is arranged outside the bottom turntable, and through holes are formed in the side wall of the dust cover corresponding to the brazing filler metal feeding device, the cutter feeding device and the dust collecting device;
and a layer of non-woven fabric is fixed on the inner wall of the dust cover.
As a further scheme of the invention, the dust suction device comprises a manipulator and a dust suction pipe arranged on the manipulator, and one end of the dust suction pipe is connected with a dust collector.
As a further scheme of the invention, the structure of the brazing filler metal feeding device is different from that of the cutter feeding device in that one end, away from the vertical fine adjustment rod, of the second connecting rod is fixedly provided with a brazing filler metal feeding head, the brazing filler metal feeding head comprises a powder feeding pipe, one end of a vent pipe is communicated with the side wall of the powder feeding pipe, a filtering material is arranged in the vent pipe, the brazing filler metal can be blocked from transferring and can be ventilated, the side wall of the powder feeding pipe is fixedly connected with one end of the second connecting rod, one end of the powder feeding pipe is connected with the feeding end of a powder laying pipe, and one discharging end of the powder laying pipe is provided with a screen layer;
the ultrasonic generator is fixedly mounted on the pipe wall of the powder feeding pipe, the electromagnetic valve is further fixedly mounted on the powder feeding pipe, and one end, far away from the powder spreading pipe, of the powder feeding pipe is connected with a powder conveying structure through a pipeline and used for conveying the brazing filler metal into the powder feeding pipe.
As a further aspect of the present invention, the cemented carbide cutting insert manufactured by the above method for manufacturing a cemented carbide cutting insert includes a holder and an insert, the holder including a structure block and an insert mounting block which are alternately arranged;
the blade mounting block comprises a blade mounting block and a blade mounting block, wherein a plurality of blade mounting grooves are annularly arranged on the side edge of the blade mounting block in an array mode, the shape and the size of each blade mounting groove are the same as those of a screen layer, each blade mounting groove comprises a first radial limiting part, a first circumferential limiting part and a second circumferential limiting part, the first circumferential limiting part is communicated with the first radial limiting part and the second circumferential limiting part, the width of the first circumferential limiting part is smaller than that of the first radial limiting part and the second circumferential limiting part, and a strip-shaped blind groove is formed in one side, close to a central limiting rod mounting hole, of the first radial limiting part;
the blade comprises a handle and a cutting blade, the handle comprises a second radial limiting part, a third circumferential limiting part and a fourth circumferential limiting part are fixedly connected with the end parts of the second radial limiting part and the cutting blade, the depth of the blade mounting groove is greater than the thickness of the handle, the second radial limiting part is smaller than the first radial limiting part along the radial width of the blade mounting block, and one side of the second radial limiting part close to the center of the blade mounting block is adapted to a strip-shaped blind hole formed in the first radial limiting part.
As a further scheme of the invention, a central limiting rod mounting hole and a plurality of side limiting rod mounting holes are respectively arranged on the structure block and the blade mounting block, wherein the side limiting rod mounting holes are distributed in an annular array by taking the central limiting rod mounting hole as a center, the structure block and the blade mounting block which are arranged in a staggered and overlapped mode are limited by the central limiting rod penetrating through the central limiting rod mounting hole and the side limiting rods penetrating through the side limiting rod mounting holes, two ends of the central limiting rod are locked by a central nut, and two ends of the side limiting rods are locked by side nuts.
As a further scheme of the invention, the cutting insert comprises a hard alloy part and a mounting part, wherein a V-shaped groove is arranged on one side of the hard alloy part opposite to the cutting edge, a V-shaped bulge matched with the V-shaped groove is arranged on one end of the mounting part close to the hard alloy part, and the V-shaped groove of the hard alloy part is partially coated on the V-shaped bulge.
The invention has the beneficial effects that:
1. according to the brazing filler metal feeding device and the cutter feeding device, the multi-layer structure of the driving motor, the first driving air cylinder, the rotating air cylinder and the precise air cylinder is arranged, so that the position of a material to be transferred can be transferred in a large range and at low precision through the driving motor, and then the position of the material to be transferred can be tightly adjusted through the tight air cylinder, and therefore the position adjusting efficiency and progress are improved;
2. according to the invention, the cutter shaft is set to be of a multilayer structure, brazing filler metal is uniformly laid on the blade mounting groove of the blade mounting block, then the blade is clamped on the blade mounting groove, the multilayer blades are fixedly mounted on the cutter shaft through the staggered arrangement of the structure block and the blade mounting block, then the brazing filler metal is melted through high-temperature treatment, and the cooled blades are fixed on the cutter shaft, so that the sequential molding is realized, and the mounting uniformity and the mounting strength of the blades on the cutter shaft are improved.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic structural diagram of a cemented carbide cutting tool manufacturing apparatus;
FIG. 2 is a schematic view of the tool holder;
FIG. 3 is a schematic view of a blade mounting block;
FIG. 4 is a schematic view of the blade configuration;
FIG. 5 is a schematic view of a cutting insert;
FIG. 6 is a schematic structural view of a knife feeding device;
fig. 7 is a schematic structural view of a solder feeding head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A method for manufacturing a hard alloy cutting tool comprises the following steps:
firstly, fixedly connecting a V-shaped groove 615 and a V-shaped bulge 617 of a hard alloy cutting tool through heat treatment to obtain a cutting blade, and fixing the cutting blade and a tool holder 61 together through heat treatment to obtain a blade 6, wherein in one embodiment of the invention, the heat treatment is high-frequency welding;
secondly, a driving motor 12 on the hard alloy cutting tool manufacturing device drives a vertical threaded rod 17 to rotate, so that a limiting U-shaped block 16 and a main sliding block 15 are driven to adjust the height in the vertical direction, a first connecting rod 114 is adjusted to be parallel to a transverse adjusting rod 19 through a rotary cylinder 113, the position of a rotary cylinder mounting seat 112 on the transverse adjusting rod 19 is adjusted through a first driving cylinder 111, and therefore the position of a solder feeding head 7 in the vertical direction and the horizontal direction is adjusted;
thirdly, opening the electromagnetic valve 73, inputting a preset amount of brazing filler metal powder into the powder feeding pipe 71, enabling the brazing filler metal powder to be gathered on the screen layer 76 in the powder laying pipe 75, and then opening the ultrasonic generator 72, so that the brazing filler metal powder uniformly falls into the blade mounting groove 522 from the screen layer 76;
fourthly, the blade assembled in the first step is transferred to the position above the blade mounting groove 522 through the finger cylinder, then the position of the finger cylinder is further adjusted through the precision cylinder 117, so that the handle 61 of the blade 6 is in contact with the brazing filler metal layer in the blade mounting groove 522, and then the blade is driven through the first driving cylinder 111, so that one side, close to the center of the blade mounting block 52, of the second radial limiting part 611 is in butt joint with the strip-shaped blind hole formed in the first radial limiting part 525, and the position of the blade 6 is fixed;
fifthly, superposing the structural block 51 on the blade mounting block 52 provided with the blade 6 by a manipulator, superposing the blade mounting block 52 not provided with the blade 6 on the structural block 51 by the manipulator, and repeating the operations from the second step to the fourth step;
sixthly, repeating the operations from the second step to the fifth step until the blade mounting blocks 52 are mounted with a preset number, locking the blade mounting blocks 52 and the structure blocks 51 through the central nuts 53 and the side nuts 54 after superposing one structure block 51 again, and performing high-temperature heating treatment on the locked whole to ensure that the brazing filler metal is fully melted and cooled;
seventhly, brazing is carried out at the joint gap between the second circumferential limiting part 527 and the fourth circumferential limiting part 613, and the gap is supplemented, so that the formed hard alloy cutting tool is obtained.
As shown in fig. 1 to 7, a hard alloy cutting tool manufacturing device comprises a mounting platform 4, and a brazing filler metal feeding device 3, a tool feeding device 1 and a dust suction device 2 which are arranged around the mounting platform 4;
the mounting platform 4 comprises a bottom turntable 41 and a tool shank fixing part 42 fixedly mounted on the bottom turntable 41, a stepping motor is arranged at the bottom of the bottom turntable 41, the bottom turntable 41 can be driven to rotate through the stepping motor, a dust cover 45 is arranged outside the bottom turntable 41, and through holes are formed in the side wall of the dust cover 45 corresponding to the brazing filler metal feeding device 3, the tool feeding device 1 and the dust collection device 2;
a layer of non-woven fabric is fixed on the inner wall of the dust cover 45, so that the dust generated in the production process can be adsorbed;
the dust collection device 2 comprises a manipulator and a dust collection pipe arranged on the manipulator, and one end of the dust collection pipe is connected with a dust collector;
the knife feeding device 1 comprises two oppositely arranged installation blocks 11, a vertical supporting column 13 and a vertical smooth rod 18 are fixedly arranged between the two installation blocks 11, a vertical threaded rod 17 is rotatably arranged between the two installation blocks 11, one end of the vertical threaded rod 17 is fixedly connected with a shaft extension end of a driving motor 13, a vertical slide rail 14 is fixedly arranged on the vertical support column 13, a main slide block 15 is arranged on the vertical slide rail 14 in a sliding way, two ends of the main slide block 15 are respectively and fixedly connected with two ends of the opening side of a limiting U-shaped block 16, the tail part of the limiting U-shaped block 16 is sleeved on a vertical smooth slide bar 18 and a vertical threaded rod 17, wherein the limiting U-shaped block 16 is connected with the vertical smooth sliding rod 18 in a sliding way, the limiting U-shaped block 16 is in threaded fit with the vertical threaded rod 17, the driving motor 12 drives the vertical threaded rod 17 to rotate, so that the main sliding block 15 can be driven to slide up and down in a reciprocating manner along the vertical sliding rail 14;
a transverse adjusting rod 19 is fixedly connected to one surface of the main slider 15, which is opposite to the vertical sliding rail 14, a transverse sliding rail 110 is arranged on the transverse adjusting rod 19, a rotary cylinder mounting seat 112 is arranged on the transverse sliding rail 110 in a sliding manner, a rotary cylinder 113 is fixedly mounted on the rotary cylinder mounting seat 112, a first driving cylinder 111 is fixedly mounted on the transverse adjusting rod 19, the cylinder shaft end of the first driving cylinder 111 is fixedly connected with the rotary cylinder mounting seat 112, and the rotary cylinder mounting seat 112 can be driven to slide back and forth along the transverse sliding rail 110 through the first driving cylinder 111;
the rotary cylinder 113 is connected with one end of a first connecting rod 114, the other end of the first connecting rod 114 is fixedly connected with a vertical fine adjustment rod 115, the vertical fine adjustment rod 115 is perpendicular to the first connecting rod 114, two sides of one surface of the vertical fine adjustment rod 115 are respectively fixed with an auxiliary mounting block 116, a fine adjustment slide rail 118 is arranged between the two auxiliary mounting blocks 116, a strip-shaped hole 119 penetrating through the fine adjustment slide rail 118 and the vertical fine adjustment rod 115 is arranged on the fine adjustment slide rail 118 along the extending direction of the fine adjustment slide rail 118, one end of a second connecting rod 120 is arranged on the fine adjustment slide rail 118 in a sliding way, a bulge penetrating through the strip-shaped hole 119 is arranged on one end of the second connecting rod 120 in a sliding way with the fine adjustment slide rail 118, a precise cylinder 117 is fixedly mounted on one end of the vertical fine adjustment rod 115, and the cylinder shaft end of the precise cylinder 117 is fixedly connected with the bulge, the second connecting rod 120 can be driven to reciprocate along the fine adjustment slide rail 118 through the precision air cylinder 117;
a finger cylinder 121 is fixedly mounted at the other end of the second connecting rod 120, and when the cutter holder works, the cutter blade 6 is clamped by the finger cylinder 121 and the cutter blade 61 is conveyed into the dust cover 45;
the structure of the brazing filler metal feeding device 3 is different from that of the cutter feeding device 1 in that one end, far away from the vertical fine adjustment rod 115, of the second connecting rod 120 is fixedly provided with a brazing filler metal feeding head 7, the brazing filler metal feeding head 7 comprises a powder feeding pipe 71, one end of a vent pipe 74 is communicated with the side wall of the powder feeding pipe 71, a filtering material is arranged in the vent pipe 74, brazing filler metal transfer can be blocked, and ventilation can be achieved, the side wall of the powder feeding pipe 71 is fixedly connected with one end of the second connecting rod 120, one end of the powder feeding pipe 71 is connected with one feeding end of a powder laying pipe 75, and one discharging end of the powder laying pipe 75 is provided with a screen layer 76;
an ultrasonic generator 72 is fixedly mounted on the pipe wall of the powder feeding pipe 71, an electromagnetic valve 73 is also fixedly mounted on the powder feeding pipe 71, and one end, far away from the powder laying pipe 75, of the powder feeding pipe 71 is connected with a powder conveying structure through a pipeline and used for conveying brazing filler metal into the powder feeding pipe 71;
the above-described cemented carbide cutting tool manufacturing apparatus is suitable for manufacturing cemented carbide cutting tools comprising a holder 5 and a blade 6, the tool apron 5 comprises a structure block 51 and a blade mounting block 52 which are arranged in a staggered manner, a central limiting rod mounting hole 523 and a plurality of side limiting rod mounting holes 524 are respectively arranged on the structure block 51 and the blade mounting block 52, the side limiting rod mounting holes 524 are distributed in an annular array by taking the central limiting rod mounting hole 523 as a center, the plurality of structure blocks 51 and the blade mounting blocks 52 which are arranged in a staggered and overlapped mode are limited by the central limiting rod penetrating through the central limiting rod mounting hole 523 and the side limiting rods penetrating through the side limiting rod mounting holes 524, two ends of the central limiting rod are locked through a central nut 53, two ends of the side limiting rod are locked through side nuts 54, and therefore the structure blocks 51 and the blade mounting blocks 52 are tightly attached to each other;
the blade mounting block 52 is provided with a plurality of blade mounting grooves 522 in an annular array on the side edge, the shape and the size of each blade mounting groove 522 are the same as those of the screen layer 76, each blade mounting groove 522 comprises a first radial limiting part 525, a first circumferential limiting part 526 and a second circumferential limiting part 527, the first circumferential limiting part 526 is communicated with the first radial limiting part 525 and the second circumferential limiting part 527, the width of the first circumferential limiting part 526 is smaller than that of the first radial limiting part 525 and the second circumferential limiting part 527, and a strip-shaped blind groove is formed in one side of the first radial limiting part 525 close to the central limiting rod mounting hole 523;
the blade 6 comprises a tool holder 61 and a cutting blade, the tool holder comprises a second radial limiting part 611, a third radial limiting part 612 and a fourth circumferential limiting part 613, the fourth circumferential limiting part 613 is fixedly connected with the end part of the cutting blade, the depth of the blade mounting groove 522 is greater than the thickness of the tool holder 61, the radial width of the second radial limiting part 611 along the blade mounting block 52 is smaller than the radial width of the first radial limiting part 525 along the blade mounting block 52, and one side of the second radial limiting part 611 close to the center of the blade mounting block 52 is adapted to a strip-shaped blind hole formed in the first radial limiting part 525;
the cutting insert comprises a hard alloy part 616 and a mounting part 614, a V-shaped groove 615 is formed in one side, opposite to a cutting edge, of the hard alloy part 616, a V-shaped protrusion 617 matched with the V-shaped groove 615 is formed in one end, close to the hard alloy part 616, of the mounting part 614, part of the V-shaped groove 615 of the hard alloy part 616 is wrapped on the V-shaped protrusion 617, the mounting part 614 of the joint is protected, the contact area of the joint is increased, and the connection strength is improved.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (8)
1. The method for manufacturing the hard alloy cutting tool is characterized by comprising the following steps of:
firstly, fixedly connecting a V-shaped groove (615) and a V-shaped bulge (617) of a hard alloy cutting tool through heat treatment to obtain a cutting blade, and fixing the cutting blade and a tool holder (61) together through heat treatment to obtain a blade (6);
secondly, a driving motor (12) on the hard alloy cutting tool manufacturing device drives a vertical threaded rod (17) to rotate, so that a limiting U-shaped block (16) and a main sliding block (15) are driven to adjust the height in the vertical direction, a first connecting rod (114) is adjusted to be parallel to a transverse adjusting rod (19) through a rotating cylinder (113), the position of a rotating cylinder mounting seat (112) on the transverse adjusting rod (19) is adjusted through a first driving cylinder (111), and when a brazing filler metal feeding head (7) reaches the position above a blade mounting groove (522), the height of the brazing filler metal feeding head (7) is further adjusted through a precision cylinder (117);
thirdly, opening an electromagnetic valve (73), inputting a preset amount of brazing filler metal powder into a powder feeding pipe (71), enabling the brazing filler metal powder to be gathered on a screen mesh layer (76) in a powder laying pipe (75), and then opening an ultrasonic generator (72) to enable the brazing filler metal powder to uniformly fall into a blade mounting groove (522) from the screen mesh layer (76);
fourthly, the blade (6) assembled in the first step is transferred to the position above the blade mounting groove (522) through the finger cylinder (121), then the position of the finger cylinder is further adjusted through the precision cylinder (117), so that the handle (61) of the blade (6) is in contact with the brazing filler metal layer in the blade mounting groove (522), and then the blade is driven through the first driving cylinder (111), so that one side, close to the center of the blade mounting block (52), of the second radial limiting part (611) is in butt joint with the strip-shaped blind hole formed in the first radial limiting part (525), and the position of the blade (6) is fixed;
fifthly, superposing the structural block (51) on the blade mounting block (52) provided with the blade (6) through a manipulator, superposing the blade mounting block (52) not provided with the blade (6) on the structural block (51) through the manipulator, and repeating the operations from the second step to the fourth step;
sixthly, repeating the operations from the second step to the fifth step until the blade mounting blocks (52) are mounted with a preset number, locking the blade mounting blocks (52) and the structure blocks (51) through a central nut (53) and side nuts (54) after stacking the structure blocks (51), and performing high-temperature heating treatment on the locked whole to ensure that the brazing filler metal is cooled after being fully melted;
and seventhly, brazing the joint gap between the second circumferential limiting part (527) and the fourth circumferential limiting part (613) to supplement the gap, thereby obtaining the formed hard alloy cutting tool.
2. The cemented carbide cutting tool manufacturing method according to claim 1, characterized in that the cemented carbide cutting tool manufacturing apparatus comprises a mounting platform (4), and a brazing filler metal feeding device (3), a tool feeding device (1) and a dust suction device (2) arranged around the mounting platform (4);
the mounting platform (4) comprises a bottom turntable (41) and a cutter handle fixing piece (42) fixedly mounted on the bottom turntable (41), a stepping motor is arranged at the bottom of the bottom turntable (41), and the stepping motor can drive the bottom turntable (41) to rotate;
the cutter feeding device (1) comprises two opposite mounting blocks (11), a vertical supporting column (13) and a vertical smooth rod (18) are fixedly mounted between the two mounting blocks (11), a vertical threaded rod (17) is rotatably mounted between the two mounting blocks (11), one end of the vertical threaded rod (17) is fixedly connected with the shaft extension end of a driving motor (13), a vertical sliding rail (14) is fixedly arranged on the vertical supporting column (13), a main sliding block (15) is slidably arranged on the vertical sliding rail (14), two ends of the main sliding block (15) are respectively and fixedly connected with two ends of the opening side of a limiting U-shaped block (16), the tail part of the limiting U-shaped block (16) is sleeved on the vertical smooth rod (18) and the vertical threaded rod (17), the limiting U-shaped block (16) is slidably connected with the vertical smooth rod (18), and the limiting U-shaped block (16) is in threaded fit with the vertical threaded rod (17), the driving motor (12) drives the vertical threaded rod (17) to rotate, so that the main sliding block (15) can be driven to slide up and down in a reciprocating manner along the vertical sliding rail (14);
a transverse adjusting rod (19) is fixedly connected to one surface, opposite to the vertical sliding rail (14), of the main sliding block (15), a transverse sliding rail (110) is arranged on the transverse adjusting rod (19), a rotary cylinder mounting seat (112) is arranged on the transverse sliding rail (110) in a sliding mode, a rotary cylinder (113) is fixedly mounted on the rotary cylinder mounting seat (112), a first driving cylinder (111) is fixedly mounted on the transverse adjusting rod (19), the cylinder shaft end portion of the first driving cylinder (111) is fixedly connected with the rotary cylinder mounting seat (112), and the rotary cylinder mounting seat (112) can be driven to slide back and forth along the transverse sliding rail (110) through the first driving cylinder (111);
the rotary air cylinder (113) is connected with one end of a first connecting rod (114), the other end of the first connecting rod (114) is fixedly connected with a vertical fine adjustment rod (115), the vertical fine adjustment rod (115) is perpendicular to the first connecting rod (114), two sides of one surface of the vertical fine adjustment rod (115) are respectively fixed with an auxiliary mounting block (116), a fine adjustment sliding rail (118) is arranged between the two auxiliary mounting blocks (116), a strip-shaped hole (119) penetrating through the fine adjustment sliding rail (118) and the vertical fine adjustment rod (115) is arranged on the fine adjustment sliding rail (118) along the extending direction of the fine adjustment sliding rail (118), one end of a second connecting rod (120) is arranged on the fine adjustment sliding rail (118) in a sliding manner, a bulge penetrating through the strip-shaped hole (119) is arranged on one end of the second connecting rod (120) in a sliding manner, and a precise air cylinder (117) is fixedly arranged on one end of the vertical fine adjustment rod (115), the end part of a cylinder shaft of the precision cylinder (117) is fixedly connected with a bulge which penetrates through the strip-shaped hole (119) on the second connecting rod (120), and the second connecting rod (120) can be driven to reciprocate along the fine adjustment sliding rail (118) through the precision cylinder (117);
and a finger cylinder (121) is fixedly arranged at the other end of the second connecting rod (120).
3. The method for manufacturing a cemented carbide cutting tool according to claim 2, characterized in that a dust cover (45) is provided outside the bottom turntable (41), and through holes are provided on the side wall of the dust cover (45) corresponding to the brazing filler metal feeding device (3), the tool feeding device (1) and the dust suction device (2);
a layer of non-woven fabric is fixed on the inner wall of the dust cover (45).
4. The method of manufacturing a cemented carbide cutting tool according to claim 2, wherein the dust suction means (2) comprises a robot and a dust suction pipe mounted on the robot, one end of the dust suction pipe being connected to a dust collector.
5. The hard alloy cutting tool manufacturing method according to claim 2, characterized in that the structure of the brazing filler metal feeding device (3) is different from that of the cutter feeding device (1) in that one end of the second connecting rod (120) far away from the vertical fine adjustment rod (115) is fixedly provided with a brazing filler metal feeding head (7), the brazing filler metal feeding head (7) comprises a powder feeding pipe (71), one end of the side wall of the powder feeding pipe (71) is communicated with one end of a vent pipe (74), a filtering material is arranged in the vent pipe (74), the brazing filler metal can be blocked from transferring and can be ventilated, the side wall of the powder feeding pipe (71) is fixedly connected with one end of the second connecting rod (120), one end of the powder feeding pipe (71) is connected with the feeding end of the powder laying pipe (75), and the discharging end of the powder laying pipe (75) is provided with a screen layer (76);
the brazing filler metal conveying device is characterized in that an ultrasonic generator (72) is fixedly mounted on the pipe wall of the powder feeding pipe (71), an electromagnetic valve (73) is further fixedly mounted on the powder feeding pipe (71), and one end, far away from the powder laying pipe (75), of the powder feeding pipe (71) is connected with a powder conveying structure through a pipeline and used for conveying brazing filler metal into the powder feeding pipe (71).
6. The cemented carbide cutting insert manufactured by the cemented carbide cutting insert manufacturing method according to claim 1, comprising a holder (5) and an insert (6), the holder (5) comprising alternately arranged structure blocks (51) and insert mounting blocks (52);
the annular array is provided with a plurality of blade mounting grooves (522) on the side edge of the blade mounting block (52), the shape and the size of each blade mounting groove (522) are the same as those of the screen layer (76), each blade mounting groove (522) comprises a first radial limiting part (525), a first circumferential limiting part (526) and a second circumferential limiting part (527), each first circumferential limiting part (526) is communicated with the first radial limiting part (525) and the second circumferential limiting part (527), the width of each first circumferential limiting part (526) is smaller than that of the first radial limiting part (525) and the second circumferential limiting part (527), and a strip-shaped blind groove is formed in one side, close to the central limiting rod mounting hole (523), of each first radial limiting part (525);
the cutting insert (6) comprises a tool shank (61) and a cutting insert, the tool shank comprises a second radial limiting part (611), a third circumferential limiting part (612) and a fourth circumferential limiting part (613), the fourth circumferential limiting part (613) is fixedly connected with the end of the cutting insert, the depth of the insert mounting groove (522) is larger than the thickness of the tool shank (61), the radial width of the second radial limiting part (611) along the insert mounting block (52) is smaller than the radial width of the first radial limiting part (525) along the insert mounting block (52), and one side, close to the center of the insert mounting block (52), of the second radial limiting part (611) is adapted to a strip-shaped blind hole formed in the first radial limiting part (525).
7. The cemented carbide cutting tool manufactured by the method for manufacturing a cemented carbide cutting tool according to claim 6, wherein the structure block (51) and the insert mounting block (52) are provided with a central stop rod mounting hole (523) and a plurality of side stop rod mounting holes (524), wherein the plurality of side stop rod mounting holes (524) are distributed in an annular array with the central stop rod mounting hole (523) as a center, the plurality of structure blocks (51) and the insert mounting block (52) which are alternately stacked are limited by the central stop rod passing through the central stop rod mounting hole (523) and the side stop rods passing through the side stop rod mounting holes (524), two ends of the central stop rod are locked by a central nut (53), and two ends of the side stop rods are locked by side nuts (54).
8. The cemented carbide cutting insert manufactured by the method for manufacturing a cemented carbide cutting tool according to claim 6, wherein the cutting insert comprises a cemented carbide part (616) and a mounting part (614), a V-shaped groove (615) is provided on the side of the cemented carbide part (616) opposite to the cutting edge, a V-shaped protrusion (617) matched with the V-shaped groove (615) is provided on the mounting part (614) close to the cemented carbide part (616), and the V-shaped groove (615) of the cemented carbide part (616) partially covers the V-shaped protrusion (617).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090309.4A CN112719824B (en) | 2021-01-22 | 2021-01-22 | Method for manufacturing cemented carbide cutting tool and cutting tool manufactured by the method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090309.4A CN112719824B (en) | 2021-01-22 | 2021-01-22 | Method for manufacturing cemented carbide cutting tool and cutting tool manufactured by the method |
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| CN112719824A true CN112719824A (en) | 2021-04-30 |
| CN112719824B CN112719824B (en) | 2021-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478037A (en) * | 2021-06-15 | 2021-10-08 | 芜湖保泰精密工具制造有限公司 | Tool for protecting inner hole of blade |
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| CN206882802U (en) * | 2017-04-18 | 2018-01-16 | 河源市英广硬质合金有限公司 | A kind of cutter for cutting cemented carbide |
| CN209849966U (en) * | 2019-02-26 | 2019-12-27 | 东莞市远鑫电子科技有限公司 | Forming cutter for processing aluminum radiator |
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|---|---|---|---|---|
| JP2000061711A (en) * | 1998-08-26 | 2000-02-29 | Mitsubishi Materials Corp | Throw-away cutting tip excellent in chipping resistance |
| JP2006187813A (en) * | 2004-12-28 | 2006-07-20 | Ngk Spark Plug Co Ltd | Cutting insert and cutting tool |
| CN206622641U (en) * | 2017-04-05 | 2017-11-10 | 中山肯诺切削工具有限公司 | A kind of special cutting gang tool of high hardness material |
| CN206882802U (en) * | 2017-04-18 | 2018-01-16 | 河源市英广硬质合金有限公司 | A kind of cutter for cutting cemented carbide |
| CN209849966U (en) * | 2019-02-26 | 2019-12-27 | 东莞市远鑫电子科技有限公司 | Forming cutter for processing aluminum radiator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478037A (en) * | 2021-06-15 | 2021-10-08 | 芜湖保泰精密工具制造有限公司 | Tool for protecting inner hole of blade |
| CN113478037B (en) * | 2021-06-15 | 2023-10-13 | 芜湖保泰精密工具制造有限公司 | Tool for protecting inner hole of cutter |
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|---|---|
| CN112719824B (en) | 2021-10-08 |
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