CN102744466B - Large cylindrical gear numerical control gulleting machine - Google Patents

Large cylindrical gear numerical control gulleting machine Download PDF

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Publication number
CN102744466B
CN102744466B CN201210258964.7A CN201210258964A CN102744466B CN 102744466 B CN102744466 B CN 102744466B CN 201210258964 A CN201210258964 A CN 201210258964A CN 102744466 B CN102744466 B CN 102744466B
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CN
China
Prior art keywords
rotary
synchronous belt
numerical control
cylindrical gear
knife rest
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Application number
CN201210258964.7A
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Chinese (zh)
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CN102744466A (en
Inventor
袁慧霞
沈乃扬
温克苓
赵秀花
焦隽
路会影
张书俊
赵奎茹
柴娅楠
齐子有
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天津第一机床总厂
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Priority to CN201210258964.7A priority Critical patent/CN102744466B/en
Publication of CN102744466A publication Critical patent/CN102744466A/en
Application granted granted Critical
Publication of CN102744466B publication Critical patent/CN102744466B/en

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Abstract

The invention relates to a large cylindrical gear numerical control gulleting machine, which comprises a bed body, a vertical column, a rotary work table, and a knife rest mechanism, wherein the rotary work table is in abutting joint with the bed body; and the vertical column is installed on the bed body. The large cylindrical gear numerical control gulleting machine is characterized in that a second servo motor is installed on one side of the vertical column, the second servo motor is connected with a ballscrew through a second coupler, the ballscrew is assembled with a lead screw nut, a knife rest main board is connected on the side of the vertical column through a linear guide rail and a sliding block, the knife rest main board is provided with the knife rest mechanism and the knife rest mechanism is provided with a gear facing cutter; the rotary work table uses a servo motor to drive a worm and wormwheel motion pair structure; and a hydraulic clamping mechanism is arranged at the lower end of the rotary work table. The knife rest mechanism includes: a first arc tooth synchronous belt pulley, a second arc tooth synchronous belt pulley, a synchronous belt, a torque motor, a tool main shaft, a cutter bar, a fixed knife pouch and the gear facing cutter. The large cylindrical gear numerical control gulleting machine has the advantages that the machine mills and machines by a principle of a forming method and machines a same gulleting groove of the cylindrical gear within 2 hours, and the equipment cost is just 500 thousand yuan, thereby improving the production efficiency and the machining precision, reducing the machining cost and expanding the machining range.

Description

Large cylindrical gear numerical control gulleting machine
Technical field
The invention belongs to gear working machine technical field, particularly a kind of large cylindrical gear numerical control gulleting machine.
Background technology
Large cylindrical gear is the vital part of Construction Machinery Transmissions, and large cylindrical gear numerical control gulleting machine is the indispensable machine-tool of machining large roller gear.At present, it is blank that the efficient gulleting machine of large cylindrical gear numerical control still belongs to, and before large cylindrical gear grinding, the processing of tooth punching groove is all using gear-hobbing machine as process equipment, and gear-hobbing machine utilizes generating principle machining cylindrical gear.When large cylindrical gear cutting amount is large, and product is when in batches large, and it is limited in one's ability that gear-hobbing machine seems.And gear-hobbing machine, as a kind of finish machining equipment, completes the rough lumber teeth groove processing work of large cutting output, is also a kind of waste of resource.Taking the efficient numerically controlled gear-hobbing machine YK3180M that adopts at present as example, approximately 4,000,000 yuan of its lathe unit prices, process a modulus 12mm, the number of teeth 55, tip diameter 692.9mm, the roller gear of facewidth 118.5mm needs 16 hours consuming time, therefore, adopt that above-mentioned process equipment machining large roller gear is not only time-consumingly taken a lot of work, working modulus is low, and processing cost is high.
Summary of the invention
The present invention increases substantially working (machining) efficiency, cuts down finished cost and can expand the large cylindrical gear numerical control gulleting machine of the range of work for the technical problem existing in solution known technology provides a kind of.
The technical scheme that the present invention takes for the technical problem existing in solution known technology is:
Large cylindrical gear numerical control gulleting machine, comprise: lathe bed, column, rotary table, cutter frame mechanism, digital control system, hydraulic system, lubricating system and cooling, chip removal system, described rotary table docks with lathe bed, on described lathe bed, column is installed, it is characterized in that: in described column one side, the second servomotor is housed, and connect ball-screw by the second shaft coupling, described ball-screw is equipped with leading screw locknut, in this side of column, pass through linear guides, slide block is connected with can be realized cutter frame mechanism and make the knife rest mainboard moving both vertically along column, on described knife rest mainboard, cutter frame mechanism is housed, indexable disc type contour alloy gear milling cutter is housed on described cutter frame mechanism, described rotary table adopts the 3rd driven by servomotor worm and wormwheel kinematic pair structure, is provided with the Hydraulic Clamping Mechanism being connected as a single entity with it in rotary table lower end,
The concrete structure of described cutter frame mechanism comprises: be arranged on the first arc tooth synchronous belt wheel of the knife rest mainboard first half and the second arc tooth synchronous belt wheel of Lower Half, between described the first arc tooth synchronous belt wheel and the second arc tooth synchronous belt wheel, be connected by Timing Belt, described the first arc tooth synchronous belt wheel connects torque motor, the upper cutter spindle that connects of described the second arc tooth synchronous belt wheel, the described cutter spindle other end is connected with by taper hole and overlaps with tapered sleeve and be bearing in the knife bar on knife bar seat, on described knife bar, be connected with stationary knife cover by key, described stationary knife cover is provided with indexable disc type contour alloy gear milling cutter dish by key.
The present invention can also adopt following technical scheme:
Described cutter frame mechanism top is also provided with tension mechanism.
Described tension mechanism comprises: be fixed on ear formula supporting base and the articulation bolt at knife rest mainboard top, described articulation bolt middle part is shaped with for regulating synchronous belt tension and lax locking groove.
The 3rd servomotor of described rotary table is connected with power shaft by flexible sheet shaft coupling, motor flange.
Described rotary table Hydraulic Clamping Mechanism comprises: nut ring flange, disk and nut and the hydraulic jack being connected with rotary table base, the piston lower end of hydraulic jack is mounted on the clamping pull bar in lathe bed clamping slot.
The lower end of described clamping pull bar is designed to circular flange structure.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme, rotary table adopts driven by servomotor high accuracy worm screw, worm gear kinematic pair, thereby has improved rotating accuracy; Driven by servomotor ball screw assembly,, is connected rotary table is moved horizontally on lathe bed along linear guides by three slide blocks, has improved bearing capacity, stability and the mobile accuracy of rotary table; Rotary table floor installation has Hydraulic Clamping Mechanism, has greatly improved the fastening safety of rotary table work; Cutter frame mechanism adopts driven by servomotor ball screw assembly,, makes cutter frame mechanism on column, do vertical feed campaign along linear guides by three slide blocks, has improved bearing capacity, stability and the mobile accuracy of cutter frame mechanism; Adopt torque motor to drive cutter spindle by arc tooth synchronous belt, and cutting tool is to adopt indexable disc type contour alloy gear milling cutter to carry out teeth groove Milling Process, has increased substantially the cutting ability of this lathe.By the design of said structure, this gulleting machine not only improves machining accuracy, working (machining) efficiency, and can expand the range of work (roller gear modulus can be to 16mm, and roller gear external diameter is extensible to 1500mm).This gulleting machine adopts forming process principle Milling Process, complete same roller gear tooth punching groove processing and only need 2 hours, and equipment cost is only 500,000 yuan, therefore the present invention is for the processing of large cylindrical gear tooth punching groove, not only can significantly cut down finished cost, and can enhance productivity.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is lathe bed structure top view of the present invention;
Fig. 4 is pillar construction partial sectional view of the present invention;
Fig. 5 is cutter frame mechanism cut-away view of the present invention;
Fig. 6 is the worm screw input partial cross sectional view of rotary table of the present invention;
Fig. 7 is the linear guide rail partial cross sectional view of rotary table of the present invention;
Fig. 8 is the Hydraulic Clamping Mechanism partial, longitudinal cross-sectional of rotary table of the present invention.
In figure: 100, lathe bed; 101, lathe bed main body; 102, the first servomotor; 103, the first shaft coupling; 104, ball screw assembly; 105, linear guides; 106, guide rail slide block;
200, column; 201, column body; 202, the second servomotor; 203, the second shaft coupling; 204, ball-screw; 205, leading screw locknut; 206, locknut seat; 207, knife rest mainboard; 208, linear guides; 209, slide block; 210, bearing; 211, balancing weight;
300, cutter frame mechanism; 301, torque motor; 302, the first arc tooth synchronous belt wheel; 303, bolt; 304, cutter spindle; 305, bearing group; 306, bearing block; 307, taper hole cover; 308, supporting base; 309, knife bar; 310, facing cutter; 311, the second arc tooth synchronous belt wheel; 312, stationary knife cover; 313, Timing Belt; 314, the first tapered sleeve; 315, the second tapered sleeve; 316, knife bar seat; 317, supporting base; 318, soket head cap screw; 319, articulation bolt; 320, tight fixed bolt; 321, fillister head screw; 322, dive key;
400, rotary table; 401, the 3rd servomotor; 402, flexible sheet shaft coupling; 403, power shaft; 404, key; 405, bearing; 406, worm screw casing; 407, worm screw; 408, worm gear; 409, rotary table body; 410, motor flange; 411, screw; 412, copper sheathing; 413, locknut seat; 414, locknut seat support; 415, table base; 416, adjusting pad; 417, disk; 418, transition nuts ring flange; 419, nut; 420, hydraulic clamp oil cylinder; 421, piston; 422, clamp pull bar; 423, fixed mount; 424, screw; 425, separator housing.
Detailed description of the invention
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1-Fig. 8, large cylindrical gear numerical control gulleting machine, comprise: lathe bed 100, column 200, rotary table 400, cutter frame mechanism 300, digital control system, hydraulic system, lubricating system and cooling, chip removal system, digital control system in the present invention, hydraulic system, lubricating system and cooling, chip removal system is not shown.Described rotary table docks with lathe bed 100, be provided with the first servomotor 102 of rotary table depth-feed mechanism in lathe bed main body one side, the first servomotor connects ball-screw 104 by the first shaft coupling 103, and ball-screw 104 is arranged in lathe bed main body 101 by bearing 108.Ball-screw locknut 107 is arranged on table base 415 by locknut seat 413 and support 414, between table base and lathe bed main body 101, is connected with screw by linear guides 105 and slide block 106.
On lathe bed, there is column 200 by Stud connection, the second servomotor 202 is installed in upright post main 201, the second servomotor is connected with ball-screw 204 by the second shaft coupling 203, ball-screw 204 is arranged in upright post main 201 by bearing 210, ball-screw locknut 205 is installed on locknut supporting base 206, described ball-screw is equipped with leading screw locknut, locknut supporting base 206 is connected with knife rest mainboard 207 screws, between knife rest mainboard 207 and upright post main, be connected by linear guides 208 and slide block 209, to realize moving both vertically of cutter frame mechanism.In upright post main, be also provided with to play and stablize the balancing weight 211 that cutter frame mechanism moves up and down, described balancing weight is connected with slide block 209 by steel wire rope, pulley.
The concrete structure of described cutter frame mechanism 300 comprises: be arranged on the first arc tooth synchronous belt wheel 302 of knife rest mainboard 207 first halves and the second arc tooth synchronous belt wheel 311 of Lower Half, between described the first arc tooth synchronous belt wheel and the second arc tooth synchronous belt wheel, be connected by the tooth form synchronous belt 313 of 14M, described the first arc tooth synchronous belt wheel connects torque motor 301, the upper cutter spindle 304 that connects of described the second arc tooth synchronous belt wheel.In the present embodiment, described Timing Belt is conventionally taking glass cord as strength layer, neoprene is that matrix is made, because distortion after strength layer stand under load is very little, very little on Timing Belt and pitch impact, guarantee between Timing Belt and curved tooth Timing Belt wheel face fricton-tightly, and then ensured gearratio accurately, and the efficiency that Timing Belt transmits is up to 98%.Described cutter spindle 304 other ends be connected with by taper hole overlap 307 and first tapered sleeve 314, the second tapered sleeve 315 be bearing in the knife bar 309 on knife bar seat 316, on described knife bar, be connected with stationary knife cover 312 by key, described stationary knife cover is provided with indexable disc type contour alloy gear milling cutter dish 310 by key.In the present embodiment, by bearing group 305,307 supportings are connected with bearing block 306 and supporting base 308 described cutter spindle 304 with taper hole cover, knife bar 309 is connected with cutter spindle 304 by bolt 303, knife bar right-hand member overlaps supporting by taper hole, and left end is bearing on knife bar seat 316 by the first tapered sleeve 314 and the second tapered sleeve 315.Indexable disc type contour alloy gear milling cutter dish 310 is connected with stationary knife cover 312 by key, and stationary knife cover 312 is connected with knife bar by key.
In the present embodiment, consider Timing Belt 313 tensioner problem and the space problems of cutter frame mechanism, be also provided with tension mechanism at described cutter frame mechanism top.Described tension mechanism comprises: be fixed on ear formula supporting base 317 and the articulation bolt 319 at knife rest mainboard 207 tops, described articulation bolt middle part is shaped with for regulating synchronous belt tension and lax locking groove.
In the present embodiment, described ear formula supporting base 317 is fixed on the top of knife rest mainboard 207 by 2 soket head cap screws 318, and regulate the tensioner of Timing Belt 313 and relax by articulation bolt 319, regulate moderate after, oval square toes styletable tight fixed bolt 320 is fixed in the locking groove of articulation bolt 319.Fast in order to ensure the cunning regulating, have two keyways on the left side of knife rest mainboard the first half, dive key 322 is housed respectively in keyway, by 2 slotted cheese head screws 321, dive key 322 is fixed in keyway.Consider space problem simultaneously, the driving-chain of tool-post structure is very short, to greatly affect so indexable disc type contour alloy gear milling cutter dish 310 tooth punching precision problems, one group of double-row conical bearing 305 is installed on cutter spindle 304, the axial force and the torque motor 301 that cause in order to bear the tooth punching of indexable disc type contour alloy gear milling cutter dish simultaneously, the radial load that the impact of the cog belt 323 of the first arc tooth synchronous belt wheel 302 and 14M causes, make cutter spindle motion steadily, and drive knife bar and indexable disc type contour alloy gear milling cutter dish 310 smooth runnings, thereby greatly improve the tooth punching precision of indexable disc type contour alloy gear milling cutter dish.
The 3rd servomotor 401, the three servomotors that described rotary table 400 front ends are provided with for driving its radial feed connect worm gear, worm movement pair by flexible sheet shaft coupling 402, to form the driving mechanism of rotary table.Described the 3rd servomotor 401 is connected with power shaft 403 by flexible sheet shaft coupling 402, power shaft 403 is connected with worm screw 407 by key 404, thereby drive worm screw 407 worm gears 408, worm screw is bearing on worm screw casing 406 by bearing 405, and worm gear 408 drives workbench body 409 to do circumgyration campaign.For the space limited meets processing instructions for use, need to as far as possible designs simplification be designed, therefore in the present embodiment, be numerical control structure by worm screw mechanical transmission In-put design, the spline input of power shaft 403 is redesigned as φ 35h6 optical axis platform, and select compact conformation, flexible sheet shaft coupling 402 easy for installation to be connected with the 3rd servomotor 401.Described power shaft 403 adopts the oil sealing of dual O RunddichtringO structure, and by copper sheathing 412 being installed to improve the wearability of power shaft.Described motor flange 410 is designed to welded structure, is connected, thereby is fixed on table base 415 by screw 411 with motor flange.
Described flexible sheet shaft joint 402 adopts enclosed construction, therefore on motor flange 410, has two windows, to facilitate flexible sheet shaft joint 402 screw fastenings.
Refer to Fig. 7, for ensureing the center and the position relationship that is arranged on the linear guide rail on table base 415 of worm-gears, transition bracket 414 is housed installing between the nut seat 413 of worm-gears and table base 415, and be combined with adjusting pad 416 so as when assembling match grinding size, ensure the needs of position relationship.
Described rotary table Hydraulic Clamping Mechanism comprises: transition nuts ring flange 418, disk 417 and nut 419 and the hydraulic jack 420 being connected with rotary table base 415, piston 421 and clamping pull bar 422, described disk 417 is connected with rotary table body 409 by screw with transition nuts ring flange 418, and piston 421 lower ends of described hydraulic jack are mounted on the clamping pull bar 422 in lathe bed clamping slot.Transition nuts ring flange is connected with clamping cylinder by nut, and hydraulic drive piston 421 moves up and down in clamping cylinder 420, thereby it is fixing with lathe bed main body 101 within the scope of piston stroke to make to clamp pull bar 422.In the present embodiment, the lower end of described clamping pull bar is designed to circular flange structure, and it can meet the needs of clamping force, can make again it in the time of releasing orientation, in lathe bed clamping slot, move freely.The distance that clamping pull bar 422 is moved up designs in the stroke range of piston 421, in the time that rotary table need to clamp, pressure oil drives clamping pull bar 422 to move up in piston 421, until clamp pull bar flange upper surface and the clamping of lathe bed clamping slot, thereby reach the clamped object of rotary table.
Due to rotary table base 415 below limited spaces, therefore, in the present embodiment, shell larger Hydraulic Clamping Mechanism is cancelled, and adopt a L-type fixed mount 423, and fixed mount one end is fixed on table base 415 by screw 424, and the other end is fixed by the keyway on key shape plate and separator housing 425, to prevent that separator housing from rotating, this structure has not only met the needs that use but also has saved space.
Operation principle of the present invention is:
First workpiece is arranged on rotary table 400, and by workpiece and rotary table clamping, then starts the first servomotor 102 and drive rotary table footpath to be forwarded to operating position, cutter frame mechanism 300 under; Torque motor 301 on opening knife frame mechanism, rotates indexable disc type contour alloy gear milling cutter dish 310, and waters cooling fluid simultaneously.Now, make piston 421 drive clamping pull bar 422 to move up by the pressure oil of hydraulic jack 420, until clamp pull bar flange upper surface and the clamping of lathe bed clamping slot upper surface, utilize the clamping reaction force of lathe bed clamping slot upper surface that rotary table is clamped.The second servomotor 202 starting on column 200 rotates, and drives ball-screw 204 and knife rest mainboard 207 to move down, and then makes cutter frame mechanism be displaced downwardly to desired location, starts the machining to tooth punching groove before large cylindrical gear workpieces roll flute.After a monodentate has cut, the indexable disc type contour alloy gear milling cutter dish stop motion of cutter frame mechanism, the clamping cylinder of rotary table is unclamped, rotary table is moved backward, cutter frame mechanism moves up, now, divide tooth operation by the rotary table that rotarily drives of the worm screw on rotary table, worm gear.After point tooth has operated, rotary table advances to operating position again, and the lathe above-mentioned action that circulates, carries out the cutting of second monodentate.

Claims (6)

1. a large cylindrical gear numerical control gulleting machine, comprise: lathe bed, column, rotary table, cutter frame mechanism, digital control system, hydraulic system, lubricating system and cooling, chip removal system, described rotary table docks with lathe bed, on described lathe bed, column is installed, it is characterized in that: in described column one side, the second servomotor is housed, and connect ball-screw by the second shaft coupling, described ball-screw is equipped with leading screw locknut, in this side of column, pass through linear guides, slide block is connected with can be realized cutter frame mechanism and make the knife rest mainboard moving both vertically along column, on described knife rest mainboard, cutter frame mechanism is housed, indexable disc type contour alloy gear milling cutter dish is housed on described cutter frame mechanism, described rotary table adopts the 3rd driven by servomotor worm and wormwheel kinematic pair structure, is provided with the Hydraulic Clamping Mechanism being connected as a single entity with it in rotary table lower end,
The concrete structure of described cutter frame mechanism comprises: be arranged on the first arc tooth synchronous belt wheel of the knife rest mainboard first half and the second arc tooth synchronous belt wheel of Lower Half, between described the first arc tooth synchronous belt wheel and the second arc tooth synchronous belt wheel, be connected by Timing Belt, described the first arc tooth synchronous belt wheel connects torque motor, the upper cutter spindle that connects of described the second arc tooth synchronous belt wheel, the described cutter spindle other end is connected with by taper hole and tapered sleeve and is bearing in the knife bar on knife bar seat, on described knife bar, be connected with stationary knife cover by key, described stationary knife cover is provided with indexable disc type contour alloy gear milling cutter dish by key.
2. large cylindrical gear numerical control gulleting machine according to claim 1, is characterized in that: described cutter frame mechanism top is also provided with tension mechanism.
3. large cylindrical gear numerical control gulleting machine according to claim 2, it is characterized in that: described tension mechanism comprises: be fixed on ear formula supporting base and the articulation bolt at knife rest mainboard top, described articulation bolt middle part is shaped with for regulating synchronous belt tension and lax locking groove.
4. large cylindrical gear numerical control gulleting machine according to claim 1, is characterized in that: the 3rd servomotor of described rotary table is connected with power shaft by flexible sheet shaft coupling, motor flange.
5. large cylindrical gear numerical control gulleting machine according to claim 1, it is characterized in that: described rotary table Hydraulic Clamping Mechanism comprises: nut ring flange, disk and nut and the hydraulic jack being connected with rotary table base, the piston lower end of hydraulic jack is mounted on the clamping pull bar in lathe bed clamping slot.
6. large cylindrical gear numerical control gulleting machine according to claim 5, is characterized in that: the lower end of described clamping pull bar is designed to circular flange structure.
CN201210258964.7A 2012-07-24 2012-07-24 Large cylindrical gear numerical control gulleting machine CN102744466B (en)

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