CN113578991B - Machining die and machining method for gear - Google Patents
Machining die and machining method for gear Download PDFInfo
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- CN113578991B CN113578991B CN202110718517.4A CN202110718517A CN113578991B CN 113578991 B CN113578991 B CN 113578991B CN 202110718517 A CN202110718517 A CN 202110718517A CN 113578991 B CN113578991 B CN 113578991B
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- gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by impact extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
Abstract
The invention discloses a gear machining die and a gear machining method in the technical field of gear machining dies, and the gear machining die comprises a machining table, wherein the top of the machining table is fixedly connected with two telescopic cylinders, and the inner ends of the two telescopic cylinders are fixedly connected with semi-arc plates; when the gear is produced by using the processing die each time, the plurality of arc gears are butted with each other to slowly extrude the softened material in the forward direction, so that the outer surface of the softened material forms formed teeth, after the extrusion is finished, the second sliding rod and the pressing gear fall downwards by using the pulling mechanism, the positioning mechanism and the opening mechanism to impact the extruded gear, the gear is completely extruded and formed, the partial position expansion of the gear in the extrusion process is avoided, the teeth of the formed gear are ensured to be in a good state, after the extrusion is finished, the plurality of arc gears exit along the teeth of the gear, the interference between the processing die and the teeth of the gear is avoided, the demolding is simpler and more convenient, and the qualified rate of the forming of the gear is improved.
Description
Technical Field
The invention relates to the technical field of gear machining dies, in particular to a gear machining die and a gear machining method.
Background
The transmission gear is a mechanical element for transmitting motion and power, generally comprises gear teeth, tooth sockets, end faces, a normal face, addendum circles, dedendum circles, base circles and reference circles, most of the traditional gear machining adopts gear grinding for machining, but the machining is complicated, and the machining time is long, so that part of gears are machined by adopting a mold at present, and the machining speed is improved.
The prior art discloses a patent of invention in the aspect of a processing mold of a part of gears, and a Chinese patent with the patent application number of CN201721457923.5 discloses a precision processing mold of gears, which comprises a gear blank and a processing mold, wherein the processing mold is wrapped on the outer surface of the gear blank, the processing mold is provided with two processing half molds which are symmetrical at the left side and the right side, tooth extrusion grooves for tooth forming are uniformly arranged on the inner walls of the processing half molds, a mold extrusion device which can be connected and tightened step by step is arranged between the two processing half molds, the mold extrusion device is provided with two groups which are symmetrically fixed at the two ends of the processing half molds, and the mold extrusion device and the two processing half molds form the precision processing mold of the gears.
The prior art utilizes the mould to extrude into the tooth to softened material after, when utilizing two half-gears of actuating mechanism pulling to open the drawing of patterns, after the gear is by compression moulding, because block between tooth and the mould, the mould can't be opened this moment, and the tooth of the gear and the shaping tooth of mould contact are close laminating in many places this moment, lead to fashioned gear to be difficult to directly pushed out, make the drawing of patterns difficult, and when softened material was extruded, the inflation appears easily in its top, lead to partial extrusion's tooth incomplete, the gear qualification rate that leads to producing is lower.
Based on the above, the invention designs a gear processing mold and a gear processing method, so as to solve the above problems.
Disclosure of Invention
The invention aims to provide a gear processing die and a gear processing method, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a machining die for a gear comprises a machining table, wherein two telescopic cylinders are fixedly connected to the top of the machining table, the inner ends of the two telescopic cylinders are fixedly connected with a semi-arc plate, the bottom of the machining table is rotatably connected with a first rotating shaft, the first rotating shaft is fixedly connected with a first mounting ring through two first connecting blocks, the bottom end of the first rotating shaft is connected with a first gear through a one-way bearing, the bottoms of the two semi-arc plates are fixedly connected with L-shaped racks, a first sliding chute for the L-shaped racks to slide transversely is formed in the machining table, the two L-shaped racks are meshed with the first gear, the top of the first mounting ring is rotatably connected with a first push rod, the outer end of each first push rod is rotatably connected with a first slide bar, a plurality of second sliding chutes for the first slide bar to slide respectively are formed in the machining table, the top of each first slide bar is fixedly connected with an arc gear, a plurality of arc gears jointly form an extrusion forming gear, a plurality of arc gears are in contact with the inner side wall of the semi-arc plate, an L-shaped support is fixedly connected with an L-shaped support, the top end of the second slide bar is opened, and a positioning mechanism is connected with a second sliding mechanism, and a positioning mechanism for pulling the semi-arc plate, and a positioning mechanism is connected with a positioning mechanism for pulling the top of the two sliding bar, the semi-arc plate, and a positioning mechanism, the semi-arc plate, the positioning mechanism is connected with the top of the second sliding mechanism;
the positioning mechanism comprises a first connecting plate, a positioning insertion rod which is connected with the first connecting plate in a sliding mode penetrates through the first connecting plate, a first baffle is fixedly connected to the rear end of the positioning insertion rod, a first spring which is located between the first connecting plate and the first baffle is sleeved on the outer surface of the positioning insertion rod, and a positioning hole for the positioning insertion rod to insert is formed in the outer surface of the second sliding rod;
the opening mechanism comprises two L-shaped connecting plates, the two L-shaped connecting plates are fixedly connected to the left side and the right side of the first baffle respectively, the front side walls of the two L-shaped connecting plates are fixedly connected with first guide blocks, the tops of the two semi-arc plates are fixedly connected with second guide blocks, and the second guide blocks are used for extruding the first guide blocks;
the pulling mechanism comprises two second connecting plates, the two second connecting plates are fixedly connected to the left side and the right side of the first connecting plates respectively, guide wheels are rotatably connected to the front side walls of the two first connecting plates, pulling steel ropes are fixedly connected to the top ends of the two second guide blocks respectively, and the inner ends of the two pulling steel ropes bypass the two guide wheels on the same side of the two pulling steel ropes respectively and are fixedly connected to the top ends of the second sliding rods;
the tops of the two second connecting plates are fixedly connected with L-shaped supporting plates, first electric cylinders fixedly connected with the L-shaped supporting plates penetrate through the L-shaped supporting plates, the bottoms of the extending ends of the two first electric cylinders are fixedly connected with cylindrical sleeves, and the two cylindrical sleeves are respectively sleeved on the outer surfaces of the two pulling steel ropes;
the processing table is characterized in that a jacking column slidably connected with the processing table penetrates through the top of the processing table, the bottom ends of the two jacking columns are fixedly connected with a first extrusion block, the bottom of the processing table is fixedly connected with two air springs, the inner ends of the two air springs are fixedly connected with arc-shaped sliding plates, the arc-shaped sliding plates are used for being extruded by a first sliding rod to slide outwards, the inner side walls of the two arc-shaped sliding plates are fixedly connected with fixed strips, the bottoms of the two fixed strips are fixedly connected with a second extrusion block, the second extrusion block is used for extruding the first extrusion block, the bottom of the processing table is fixedly connected with two positioning baffles, and the two positioning baffles are respectively contacted with the rear ends of the front fixed strip and the rear fixed strip;
a machining method of a machining die of a gear comprises the following specific steps:
the method comprises the following steps: firstly, the two telescopic cylinders are in a retraction state to drive the two semi-arc plates to be in an opening rotary table, the plurality of arc gears are in a separation state, and the second sliding rod is positioned by the positioning mechanism;
step two: putting the high-temperature softened material into the top of the processing table and enabling the material to be positioned inside the plurality of opened arc gears;
step three: then, simultaneously starting the two telescopic cylinders to drive the telescopic cylinders and the fixedly connected semi-arc plates to simultaneously move towards the middle position, and extruding and forming the softened gear material when the two semi-arc plates move inwards;
step four: after extrusion forming, the opening mechanism opens the positioning mechanism, the pulling mechanism is released, the second sliding rod and the pressing gear slide downwards simultaneously, the pressing gear falls down quickly under the action of gravity, and extrusion is performed to form a gear;
step five: after the gears are extruded and molded, the gears are cooled for a period of time, the two telescopic cylinders begin to retract, the first mounting ring begins to rotate, the plurality of arc-shaped gears are driven to start to move outwards, and the arc-shaped gears are separated from the molded gears along the tooth direction of the molded gears;
step six: the semi-arc-shaped plate passes through the pulling mechanism, the second slide bar is pulled to be completely reset, the positioning hole in the outer surface of the second slide bar is in contact with the positioning inserted bar, and the positioning inserted bar positions the second slide bar again to complete one-time gear machining.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, when the gear is produced by using the processing die each time, the plurality of arc gears are butted with each other to slowly extrude the softened material in the forward direction, so that the outer surface of the softened material forms the molded teeth, after the extrusion is finished, the second sliding rod and the pressing gear fall downwards by using the pulling mechanism, the positioning mechanism and the opening mechanism to impact the extrusion molded gear, the gear is completely extruded and molded, partial position expansion of the gear in the extrusion process is avoided, the teeth of the molded gear are ensured to be in a good state, after the extrusion is finished, the plurality of arc gears exit along the teeth of the gear, the interference between the processing die and the teeth of the gear is avoided, the demolding is simpler and more convenient, and the qualified rate of the molding of the gear is improved.
2. According to the invention, the two first electric cylinders are enabled to do telescopic motion by starting the two first electric cylinders, the first electric cylinders drive the two pulling steel ropes to pull the first sliding rods up and down through the columnar sleeves, so that the first sliding rods and the pressing gear move up and down back and forth, the pressing gear can impact the top of the extrusion-molded gear for multiple times, the top of the gear is impacted into a horizontal state, and the gear is extruded outwards, so that the extrusion-molded gear can have complete teeth with better stroke, the condition that the forming teeth at partial positions are incomplete in the extrusion process is avoided, the forming efficiency of the extrusion gear is improved, and the qualification rate of the gear production is improved.
Drawings
FIG. 1 is a flow chart of a method of using the working mold of the present invention;
FIG. 2 is a first perspective view of the general construction of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a second perspective view of the general construction of the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
FIG. 6 is a schematic view of the second slide bar and the pressing gear of the present invention;
FIG. 7 is a schematic view of the structure of the first slide bar and the arc gear of the present invention;
FIG. 8 is a third perspective view of the general construction of the present invention;
FIG. 9 is a fourth perspective view of the general structure of the present invention (hiding the second slide bar and pull cable);
fig. 10 is a schematic view of the structure of the first extrusion block and the second pressing block of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the machining device comprises a machining table 1, a telescopic cylinder 2, a semi-arc-shaped plate 3, a first rotating shaft 4, a first connecting block 5, a first mounting ring 6, a one-way bearing 7, a first gear 8, an L-shaped rack 9, a first sliding chute 10, a first push rod 11, a first sliding rod 12, a second sliding chute 13, an arc-shaped gear 14, an L-shaped support 15, a second sliding rod 16, a pressing gear 17, a first connecting plate 18, a positioning inserted rod 19, a first baffle plate 20, a first spring 21, a positioning hole 22, an L-shaped connecting plate 23, a first guide block 24, a second guide block 25, a second connecting plate 26, a guide wheel 27, a pulling steel rope 28, an L-shaped supporting plate 29, a first electric cylinder 30, a columnar sleeve 31, a pushing column 32, a first extrusion block 33, an air spring 34, an arc-shaped sliding plate 35, a fixed strip 36, a second extrusion block 37 and a positioning baffle plate 38.
Detailed Description
Referring to fig. 1-10, the present invention provides a technical solution: a gear processing die comprises a processing table 1, wherein the top of the processing table is fixedly connected with two telescopic cylinders 2, the inner ends of the two telescopic cylinders 2 are fixedly connected with semi-arc plates 3, the bottom of the processing table 1 is rotatably connected with a first rotating shaft 4, the first rotating shaft 4 is fixedly connected with a first mounting ring 6 through two first connecting blocks 5, the bottom end of the first rotating shaft 4 is connected with a first gear 8 through a one-way bearing 7, the bottoms of the two semi-arc plates 3 are fixedly connected with L-shaped racks 9, a first chute 10 for the L-shaped racks 9 to slide transversely is arranged in the processing table 1, the two L-shaped racks 9 are meshed with the first gear 8, the top of the first mounting ring 6 is rotatably connected with a first push rod 11, the outer end of each first push rod 11 is rotatably connected with a first slide rod 12, a plurality of second chutes 13 for the first slide rods 12 to slide respectively are arranged in the processing table 1, the top end of each first sliding rod 12 is fixedly connected with an arc gear 14, a plurality of arc gears 14 jointly form an extrusion forming gear, the arc gears 14 are all in contact with the inner side wall of each semi-arc plate 3, the top of the processing table 1 is fixedly connected with an L-shaped support 15, a second sliding rod 16 in sliding connection with the L-shaped support 15 penetrates through the L-shaped support 15, the bottom end of the second sliding rod 16 is fixedly connected with a pressing gear 17, the pressing gear 17 is the same as the gear formed by the arc gears 14 at the bottom, the top of the L-shaped support 15 is connected with a positioning mechanism for positioning the second sliding rod 16, the top of each semi-arc plate 3 is connected with an opening mechanism, the opening mechanism is used for opening the positioning mechanism when the two semi-arc plates 3 are closed, and the top end of the second sliding rod 16 is connected with a pulling mechanism for enabling the second sliding rod 16 to move up and down;
the positioning mechanism comprises a first connecting plate 18, a positioning insertion rod 19 which is connected with the first connecting plate in a sliding mode penetrates through the first connecting plate 18, a first baffle 20 is fixedly connected to the rear end of the positioning insertion rod 19, a first spring 21 which is located between the first connecting plate 18 and the first baffle 20 is sleeved on the outer surface of the positioning insertion rod 19, and a positioning hole 22 for the positioning insertion rod 19 to insert is formed in the outer surface of the second sliding rod 16;
the opening mechanism comprises two L-shaped connecting plates 23, the two L-shaped connecting plates 23 are respectively and fixedly connected to the left side and the right side of the first baffle 20, the front side walls of the two L-shaped connecting plates 23 are respectively and fixedly connected with a first guide block 24, the tops of the two semi-arc plates 3 are respectively and fixedly connected with a second guide block 25, and the second guide blocks 25 are used for extruding the first guide blocks 24;
the pulling mechanism comprises two second connecting plates 26, the two second connecting plates 26 are fixedly connected to the left side and the right side of the first connecting plate 18 respectively, guide wheels 27 are rotatably connected to the front side walls of the two first connecting plates 18, pulling steel ropes 28 are fixedly connected to the top ends of the two second guide blocks 25, and the inner ends of the two pulling steel ropes 28 bypass the two guide wheels 27 on the same side of the two pulling steel ropes and are fixedly connected to the top ends of the second sliding rods 16 respectively;
when the device is used, the two telescopic cylinders 2 are in a retraction state, the two semi-arc plates 3 are driven to be in an opening turntable, the plurality of arc gears 14 are in a separation state, the second sliding rod 16 is positioned by the positioning mechanism, then, a material softened at a high temperature is placed at the top of the processing table 1 and is positioned inside the plurality of opened arc gears 14, the two telescopic cylinders 2 are simultaneously started to drive the two telescopic cylinders to move towards the middle position together with the fixedly connected semi-arc plates 3, the plurality of arc gears 14 are extruded when the two semi-arc plates 3 move inwards, the arc gears 14 and the first sliding rod 12 move inwards along the second sliding chute 13, the plurality of arc gears 14 start to be in slow butt joint, the two L-shaped racks 9 are simultaneously driven to move, the first gear 8 rotates due to the action of the one-way bearing 7, the first gear 8 cannot drive the first rotating shaft 4 to rotate, the first gear 8 at the bottom drives the arc gears 14 to drive the arc gears 14 to form displacement deviation with the pushing arc gears 14, the first gear 8 and the L-shaped racks 9 are prevented from being damaged, the plurality of arc gears 14 move inwards synchronously, the first sliding rod 14 can not drive the two sliding rods to move towards the second sliding rod 16, the second sliding rod 16 and the second sliding rod 16 to move towards the second sliding guide bar 16, the second sliding rod 16 and the second sliding guide bar 16 is moved towards the second positioning mechanism, the second sliding guide bar 16, the second sliding bar 16 is positioned, the second sliding bar 16 is moved slowly, the second sliding bar 16 and the second sliding bar is positioned, the wire guide bar 16 is positioned, the second sliding bar 16, when the two semi-arc plates 3 are completely contacted and closed, the plurality of arc gears 14 form a complete gear shape, the softened gears are pressed and molded, at the moment, the positioning inserted rod 19 is driven to move out of the positioning hole 22, the second sliding rod 16 and the pressing gear 17 simultaneously slide downwards, the pressing gear 17 is consistent with the processed gears in shape, the pressing gear 17 rapidly falls under the action of gravity to extrude the softened materials extruded into the gear shape, the expanded position of the top door in extrusion is extruded, the softened materials can be more comprehensively contacted with the arc gears 14, the effect of the molded gear of each part is ensured, the top of the extruded gear can be kept in a horizontal state, after the gears are extruded and molded, the gears are cooled for a period of time, the two telescopic cylinders 2 begin to retract to drive the two semi-arc plates 3 to begin to move outwards, and the two L-shaped racks 9 reversely drive the first gear 8 to rotate, at this time, the one-way bearing 7 drives the first rotating shaft 4 to rotate, so that in the process of rapidly retracting the semi-arc plate 3, the first mounting ring 6 starts to rotate, the first push rod 11 drives the first sliding rod 12 to move outwards along the second sliding chute 13, the plurality of arc gears 14 are driven to start to move outwards and separate from the forming gear along the tooth direction of the forming gear, the interference between the arc gears 14 and the extrusion-formed gear when being opened is avoided, the forming effect of each tooth is ensured, meanwhile, the semi-arc plate 3 drives the second guide block 25 to separate from the first guide block 24, the positioning inserted rod 19 moves forwards under the action of the first spring 21, at this time, the steel rope 28 is pulled to drive the second sliding rod 16 to slide upwards, the second sliding rod 16 extrudes the positioning inserted rod 19, when the two semi-arc plates 3 return to the original position, the second sliding rod 16 is pulled to be completely reset, the positioning holes 22 on the outer surface of the second sliding rod 16 are in contact with the positioning insertion rods 19, the positioning insertion rods 19 are used for positioning the second sliding rod 16 again to complete one-time gear processing, and therefore when the gear is produced by using a processing mold each time, the arc gears 14 are in butt joint with each other to slowly extrude the softened material in the forward direction, molded teeth are formed on the outer surface of the softened material, after the extrusion is completed, the second sliding rod 16 and the pressing gear 17 fall downwards by using the pulling mechanism, the positioning mechanism and the opening mechanism to impact the extruded gear, the gear is completely extruded and molded, partial position expansion of the gear in the extrusion process is avoided, the molded teeth are in a good state, after the extrusion is completed, the arc gears 14 exit along the teeth of the gear, interference between the processing mold and the teeth of the gear is avoided, the demolding is simpler and more convenient, and the qualified rate of the molding of the gear is improved.
As a further scheme of the present invention, the tops of the two second connecting plates 26 are fixedly connected with L-shaped supporting plates 29, the first electric cylinders 30 fixedly connected with the two L-shaped supporting plates 29 penetrate through the two L-shaped supporting plates 29, the bottoms of the extending ends of the two first electric cylinders 30 are fixedly connected with columnar sleeves 31, and the two columnar sleeves 31 are respectively sleeved on the outer surfaces of the two pulling steel ropes 28; in operation, after pressing gear 17 and impacting the gear, once impact probably can't flatten the material completely, through starting two first electric jar 30, make two first electric jar 30 do concertina movement, first electric jar 30 drives two first slide bars 12 of pulling cable 28 upper and lower pulling through cylindrical sleeve 31, make first slide bar 12 and pressing gear 17 round trip movement from top to bottom, make pressing gear 17 can strike extrusion's gear top many times, strike into the horizontality with the gear top, and make the gear extrude to the outside, make the complete tooth of stroke that extrusion's gear can be better, avoid the incomplete condition of partial position shaping tooth that appears among the extrusion process, improve the fashioned efficiency of extrusion gear, improve the qualification rate of production gear.
As a further scheme of the invention, a top moving column 32 slidably connected with the top moving column penetrates through the top of the processing table 1, the bottom ends of the two top moving columns 32 are fixedly connected with a first extrusion block 33, the bottom of the processing table 1 is fixedly connected with two gas springs 34, the inner ends of the two gas springs 34 are fixedly connected with arc-shaped sliding plates 35, the arc-shaped sliding plates 35 are used for being extruded by the first sliding rods 12 to slide outwards, fixed strips 36 are fixedly connected to the inner side walls of the two arc-shaped sliding plates 35, the bottoms of the two fixed strips 36 are fixedly connected with a second extrusion block 37, the second extrusion block 37 is used for extruding the first extrusion block 33, two positioning baffles 38 are fixedly connected to the bottom of the processing table 1, and the two positioning baffles 38 are respectively contacted with the rear ends of the front and rear fixed strips 36; during operation, the gear formed by the teeth is always contacted with the top of the processing table 1, after cooling, the formed gear may be adhered to the top of the processing table 1, and is not easy to be separated, after extrusion forming, the first rotating shaft 4 rotates, when the first mounting ring 6, the first push rod 11 and the first slide rod 12 move towards the outside, the first slide rod 12 extrudes the arc sliding plate 35 taking the first rotating shaft 4 as the center, the arc sliding plate 35 moves towards the outside, the air spring 34 is extruded, the arc sliding plate 35 drives the second extrusion block 37 to move towards the outside through the fixed strip 36, the second extrusion block 37 extrudes the first extrusion block 33, the first extrusion block 33 drives the ejection column 32 to move upwards, the two ejection columns 32 simultaneously eject the formed gear to move upwards, the formed gear is separated from the top of the processing table 1, which is beneficial to separating the formed gear from the processing position, and demoulding of the formed gear is more rapid and convenient.
A machining method of a machining die of a gear comprises the following specific steps:
the method comprises the following steps: firstly, the two telescopic cylinders 2 are in a retraction state, the two semi-arc plates 3 are driven to be in an opening rotary table, the plurality of arc gears 14 are in a separation state, and the second sliding rod 16 is positioned by a positioning mechanism;
step two: placing the high-temperature softened material on the top of the processing table 1 and positioning the material inside a plurality of opened arc gears 14;
step three: then, the two telescopic cylinders 2 are started simultaneously to drive the telescopic cylinders and the fixedly connected semi-arc plates 3 to move towards the middle position simultaneously, and when the two semi-arc plates 3 move inwards, the softened gear material is extruded and formed;
step four: after extrusion molding, the positioning mechanism is opened by the opening mechanism, the pulling mechanism is released, the second sliding rod 16 and the pressing gear 17 simultaneously slide downwards, the pressing gear 17 rapidly falls under the action of gravity, and extrusion is performed to extrude the gear;
step five: after the gear is extruded and formed, the gear is cooled for a period of time, the two telescopic cylinders 2 begin to retract, the first mounting ring 6 begins to rotate, the plurality of arc-shaped gears 14 are driven to start to move outwards, and the arc-shaped gears are separated from the formed gear along the tooth direction of the formed gear;
step six: the semi-arc plate passes through a pulling mechanism, the second slide bar 16 is pulled to be completely reset, the positioning hole 22 on the outer surface of the second slide bar 16 is in contact with the positioning inserted bar 19, the positioning inserted bar 19 positions the second slide bar 16 again, and one gear machining is completed.
Claims (7)
1. The utility model provides a mold processing of gear, includes processing platform (1), its characterized in that: the top of the processing table (1) is fixedly connected with two telescopic cylinders (2), the inner ends of the two telescopic cylinders (2) are fixedly connected with semi-arc plates (3), the bottom of the processing table (1) is rotatably connected with a first rotating shaft (4), the first rotating shaft (4) is fixedly connected with a first mounting ring (6) through two first connecting blocks (5), the bottom end of the first rotating shaft (4) is connected with a first gear (8) through a one-way bearing (7), the bottom of the two semi-arc plates (3) is fixedly connected with L-shaped racks (9), a first sliding groove (10) for the L-shaped racks (9) to transversely slide is formed in the processing table (1), the two L-shaped racks (9) are meshed with the first gear (8), the top of the first mounting ring (6) is rotatably connected with a first push rod (11), the outer end of each first push rod (11) is rotatably connected with a first slide rod (12), a plurality of second sliding chutes (13) for the first slide rods (12) to slide are formed in the processing table (1), the top end of each first slide rod (12) is fixedly connected with an arc gear (14), the arc gears (14) jointly form an extrusion forming gear, and the arc gears (14) are in contact with the inner side wall of the semi-arc plate (3), processing platform (1) top fixedly connected with L type support (15), L type support (15) inside run through have rather than sliding connection's second slide bar (16), second slide bar (16) bottom fixedly connected with presses movable gear (17), it is a plurality of with the bottom to press movable gear (17) the gear shape that arc gear (14) formed is the same, L type support (15) top is connected with the positioning mechanism who is used for fixing a position second slide bar (16), half arc board (3) top is connected with opening mechanism, opening mechanism is used for opening positioning mechanism when two half arc boards (3) are closed, second slide bar (16) top is connected with the pulling mechanism who is used for making second slide bar (16) reciprocate.
2. The mold for machining a gear according to claim 1, wherein: positioning mechanism includes first connecting plate (18), first connecting plate (18) inside run through have rather than sliding connection's location inserted bar (19), location inserted bar (19) rear end fixedly connected with first baffle (20), the cover is equipped with on location inserted bar (19) surface and is located first connecting plate (18) and first baffle (20) between first spring (21), offer on second slide bar (16) surface and supply location inserted bar (19) male locating hole (22).
3. The mold for machining a gear according to claim 2, wherein: the opening mechanism comprises two L-shaped connecting plates (23) and two L-shaped connecting plates (23) which are fixedly connected to the left side and the right side of the first baffle (20) respectively and two first guide blocks (24) fixedly connected to the front side wall of each L-shaped connecting plate (23) and two second guide blocks (25) fixedly connected to the tops of the semi-arc-shaped plates (3), and the second guide blocks (25) are used for extruding the first guide blocks (24).
4. A mold for machining a gear according to claim 3, wherein: pulling mechanism includes two second connecting plates (26), two second connecting plate (26) fixed connection respectively is in the left and right sides of first connecting plate (18), two all rotate on first connecting plate (18) preceding lateral wall and be connected with leading wheel (27), two the equal fixedly connected with in second guide block (25) top pulls steel cable (28), two pulling steel cable (28) the inner is walked around respectively rather than two leading wheels (27) and fixed connection of homonymy on the top of second slide bar (16).
5. The mold for machining a gear according to claim 4, wherein: two equal fixedly connected with L type backup pad (29) in second connecting plate (26) top, two first electric jar (30) rather than fixed connection all run through in L type backup pad (29), two the end bottom fixedly connected with column sleeve (31) that stretches out of first electric jar (30), two column sleeve (31) cover is established respectively two on pulling steel cable (28) surface.
6. The mold for machining a gear according to claim 1, wherein: processing platform (1) top is run through to have rather than sliding connection's top and is moved post (32), two the first extrusion piece (33) of the equal fixedly connected with in top post (32) bottom, two air spring (34) of processing platform (1) bottom fixedly connected with, two equal fixedly connected with arc sliding plate (35) in air spring (34) inner, arc sliding plate (35) are used for being extruded to the outside and are slided by first slide bar (12), two equal fixedly connected with fixed rectangular (36) on arc sliding plate (35) inside wall, two equal fixedly connected with second extrusion piece (37) in fixed rectangular (36) bottom, second extrusion piece (37) are used for extruding first extrusion piece (33), two positioning baffle (38) of processing platform (1) bottom fixedly connected with, two positioning baffle (38) are two positioning baffle (38) contact with two fixed rectangular (36) rear end around with respectively.
7. A method for processing a gear processing mold, which is suitable for the gear processing mold of any one of claims 1 to 6, and is characterized in that: the processing method comprises the following specific steps:
the method comprises the following steps: firstly, the two telescopic cylinders (2) are in a retraction state to drive the two semi-arc plates (3) to be in an opening rotary table, the plurality of arc gears (14) are in a separation state, and the second sliding rod (16) is positioned by a positioning mechanism;
step two: placing the material softened at high temperature into the top of the processing table (1) and positioning the material inside a plurality of opened arc gears (14);
step three: then, simultaneously starting the two telescopic cylinders (2) to drive the telescopic cylinders and the fixedly connected semi-arc plates (3) to simultaneously move towards the middle position, and extruding and forming the softened gear material when the two semi-arc plates (3) move inwards;
step four: after extrusion molding, the positioning mechanism is opened by the opening mechanism, the pulling mechanism is released, the second sliding rod (16) and the pressing gear (17) simultaneously slide downwards, the pressing gear (17) rapidly falls under the action of gravity, and extrusion is performed to extrude the gear;
step five: after the gear is extruded and formed, the gear is cooled for a period of time, the two telescopic cylinders (2) begin to retract, the first mounting ring (6) begins to rotate, the plurality of arc-shaped gears (14) are driven to start to move outwards, and the arc-shaped gears are separated from the formed gear along the tooth direction of the formed gear;
step six: the semi-arc-shaped plate pulls the second sliding rod (16) to be completely reset through the pulling mechanism, the positioning hole (22) in the outer surface of the second sliding rod (16) is in contact with the positioning insertion rod (19), the positioning insertion rod (19) positions the second sliding rod (16) again, and one-time gear machining is completed.
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| CN112427471A (en) * | 2020-11-16 | 2021-03-02 | 绵阳润诚机械制造有限公司 | Cold extrusion die for external straight-tooth parts and forming process thereof |
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| KR20170061953A (en) * | 2015-11-27 | 2017-06-07 | 주식회사 포메탈 | Method for manufacturing landing gear for preventing cutting of metal flow and component of landing gear using the same |
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| CN113578991A (en) | 2021-11-02 |
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