CN202684226U - Numerically-controlled gulleting machine for large cylindrical gear - Google Patents

Numerically-controlled gulleting machine for large cylindrical gear Download PDF

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Publication number
CN202684226U
CN202684226U CN 201220361909 CN201220361909U CN202684226U CN 202684226 U CN202684226 U CN 202684226U CN 201220361909 CN201220361909 CN 201220361909 CN 201220361909 U CN201220361909 U CN 201220361909U CN 202684226 U CN202684226 U CN 202684226U
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CN
China
Prior art keywords
rotary
machine
cylindrical gear
numerical control
gulleting machine
Prior art date
Application number
CN 201220361909
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Chinese (zh)
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
Original Assignee
天津第一机床总厂
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Publication date
Application filed by 天津第一机床总厂 filed Critical 天津第一机床总厂
Priority to CN 201220361909 priority Critical patent/CN202684226U/en
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Publication of CN202684226U publication Critical patent/CN202684226U/en

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Abstract

The utility model relates to a numerically-controlled gulleting machine for a large cylindrical gear. The numerically-controlled gulleting machine comprises a machine body, a vertical column, a rotary workbench, a tool rest mechanism, a numerical control system, a hydraulic system, a lubricating system, and a cooling and chip-removing system, wherein the rotary workbench is butted with the machine body, and the vertical column is installed on the machine body. The numerically-controlled gulleting machine is characterized in that a second servo motor is installed on one side of the vertical column and connected with a ball screw via a second shaft coupler, the ball screw is assembled with a lead screw locknut, a tool rest main plate is connected to the side of the vertical column via a linear guide rail and a slide block, a tool rest mechanism is installed on a tool rest main plate, and an indexable disc-type forming alloy gear milling cutter disc is installed on the tool rest mechanism; and the rotary workbench adopts a structure that a worm-worm gear kinematic pair is driven by the servo motor, and a hydraulic clamping mechanism is arranged at the lower end of the rotary workbench. The numerically-controlled gulleting machine has the advantages that the machine performs milling machining by means of a forming-method principle, and only 2 hours is needed to finish machining for the gulleting groove of the same cylindrical gear; and moreover, equipment cost is only ** yuan, so that the machining cost can be greatly reduced, the production efficiency can be greatly increased, the machining accuracy and the machining efficiency can be increased, and the machining range can be expanded.

Description

Large cylindrical gear numerical control gulleting machine
Technical field
The utility model belongs to the gear working machine technical field, particularly a kind of large cylindrical gear numerical control gulleting machine.
Background technology
The 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, before the large cylindrical gear grinding processing of tooth punching groove all be with gear-hobbing machine as process equipment, 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 then seems.And gear-hobbing machine is finished the rough lumber teeth groove processing work of large cutting output as a kind of finish machining equipment, also is a kind of waste of resource.Take the efficient numerically controlled gear-hobbing machine YK3180M of present employing 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.
The utility model content
The utility model increases substantially working (machining) efficiency, cuts down finished cost and can enlarge the large cylindrical gear numerical control gulleting machine of the range of work for the technical problem that exists in the solution known technology provides a kind of.
The technical scheme that the utility model is taked for the technical problem that exists in the 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, at described lathe bed column is installed, it is characterized in that: on described column one side the second servomotor is housed, and by the second shaft coupling connection ball-screw, described ball-screw is equipped with the leading screw locknut, pass through linear guides in this side of column, slide block is connected with the knife rest mainboard that can realize that cutter frame mechanism moves both vertically along the column work, on the described knife rest mainboard cutter frame mechanism is housed, indexable disc type contour alloy gear milling cutter is housed on the described cutter frame mechanism; Described rotary table adopts driven by servomotor worm and wormwheel kinematic pair structure, is provided with the Hydraulic Clamping Mechanism that is connected as a single entity with it in the rotary table lower end.
The utility model can also adopt following technical scheme:
The concrete structure of described cutter frame mechanism comprises: be installed in 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, described the first arc tooth synchronous belt wheel be connected by Timing Belt between the second arc tooth synchronous belt is taken turns, described the first wildhaber-novikov gear 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 cover and tapered sleeve and is bearing in knife bar on the knife bar seat, be connected with the stationary knife cover by key on the described knife bar, described stationary knife cover is equipped with indexable disc type contour alloy gear milling cutter dish by key.
Described cutter frame mechanism top also is 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 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 are connected the hydraulic jack that is connected with the rotary table base, and the piston lower end of hydraulic jack is mounted on the clamping pull bar in the lathe bed clamping slot.
The lower end of described clamping pull bar is designed to the circular flange structure.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, namely rotary table adopts driven by servomotor high accuracy worm screw, worm gear kinematic pair, thereby has improved rotating accuracy; The driven by servomotor ball screw assembly, makes rotary table property along the line guide rail move horizontally at lathe bed by three slide blocks connections, has improved bearing capacity, stability and the mobile accuracy of rotary table; The rotary table floor installation has Hydraulic Clamping Mechanism, has greatly improved the fastening safety of rotary table work; Cutter frame mechanism adopts the driven by servomotor ball screw assembly,, makes cutter frame mechanism property along the line guide rail do the vertical feed campaign at column 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 the 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 enlarge the range of work (the roller gear modulus can be to 16mm, and the roller gear external diameter is extensible to 1500mm).This gulleting machine adopts forming process principle Milling Process, finish same roller gear tooth punching groove processing and only need 2 hours, and equipment cost only is 500,000 yuan, therefore the utility model is used for the processing of large cylindrical gear tooth punching groove, but decrease processing cost not only, and can enhance productivity.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is lathe bed structure top view of the present utility model;
Fig. 4 is pillar construction partial sectional view of the present utility model;
Fig. 5 is cutter frame mechanism cut-away view of the present utility model;
Fig. 6 is the worm screw input partial cross sectional view of rotary table of the present utility model;
Fig. 7 is the linear guide rail partial cross sectional view of rotary table of the present utility model;
Fig. 8 is the Hydraulic Clamping Mechanism partial, longitudinal cross-sectional of rotary table of the present utility model.
Among the 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, second and 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.
The specific embodiment
For further understanding utility model content of the present utility model, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
See also 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, the digital control system in the utility model, hydraulic system, lubricating system and cooling, chip removal system are not shown.Described rotary table docks with lathe bed 100, be provided with the servomotor 102 of rotary table depth-feed mechanism in lathe bed main body one side, servomotor connects ball-screw 104 by shaft coupling 103, and ball-screw 104 is installed on the lathe bed main body 101 by bearing 108.Ball-screw locknut 107 is installed on the table base 415 by locknut seat 413 and support 414, is connected with slide block by linear guides 105 between table base and the lathe bed main body 101 to be connected with screw.
By Stud connection column 200 is arranged on the lathe bed, in upright post main 201 servomotor 202 is installed, servomotor is connected with ball-screw 204 by shaft coupling 203, ball-screw 204 is installed on the upright post main 201 by bearing 210, at locknut supporting base 206 ball-screw locknut 205 is installed, described ball-screw is equipped with the leading screw locknut, locknut supporting base 206 is connected with knife rest mainboard 207 screws, are connected with slide block by linear guides 208 between knife rest mainboard 207 and the upright post main and are connected, to realize moving both vertically of cutter frame mechanism.Also be provided with to play in upright post main 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 installed in 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, described the first arc tooth synchronous belt wheel is connected with the tooth form synchronous belt 313 by 14M between the second arc tooth synchronous belt is taken turns, described the first wildhaber-novikov gear 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 usually take glass cord as strength layer, neoprene is that matrix is made, because distortion is very little behind the strength layer stand under load, very little on Timing Belt and pitch impact, guarantee between Timing Belt and curved tooth Timing Belt wheel face fricton-tightly, and then guaranteed accurately gearratio, and the efficient that Timing Belt transmits is up to 98%.Described cutter spindle 304 other ends are connected with by taper hole cover the 307 and first tapered sleeve 314, the second tapered sleeve 315 and are bearing in the knife bar 309 on the knife bar seat 316, be connected with stationary knife cover 312 by key on the described knife bar, described stationary knife cover is equipped with indexable disc type contour alloy gear milling cutter dish 310 by key.In the present embodiment, described cutter spindle 304 be connected 307 by bearing group 305 and supports to be connected with supporting base with bearing block 306 and be connected with taper hole, knife bar 309 is connected with cutter spindle 304 by bolt 303, the knife bar right-hand member is by the supporting of taper hole cover, and left end is bearing on the 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 by key and stationary knife cover 312, and stationary knife overlaps 312 and 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, also be 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 pass through articulation bolt 319 and regulate the tensioner of Timing Belts 313 with lax, regulate moderate after, the oval styletable tight fixed bolt 320 of square toes is fixed in the locking groove of articulation bolt 319.Fast in order to ensure the cunning of regulating, have two keyways on the left side of knife rest mainboard the first half, dive key 322 is housed respectively in the keyway, by 2 slotted cheese head screws 321 dive key 322 is fixed in the keyway.Consider simultaneously space problem, 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, at cutter spindle 304 one group of double-row conical bearing 305 is installed, the axial force and the torque motor 301 that cause in order to bear simultaneously the tooth punching of indexable disc type contour alloy gear milling cutter dish, the radial load that the impact of the cog belt 323 of the first arc tooth synchronous belt wheel 302 and 14M causes, make the cutter spindle motion steadily, and drive knife bar and indexable disc type contour alloy gear milling cutter dish 310 smooth runnings, thereby greatly improved the tooth punching precision of indexable disc type contour alloy gear milling cutter dish.
Described rotary table 400 front ends are provided with for the 3rd servomotor 401 that drives its radial feed, and servomotor connects worm gear, worm movement pair by flexible sheet shaft coupling 402, to consist of 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 the worm screw casing 406 by bearing 405, and worm gear 408 drives workbench body 409 and does the circumgyration campaign.In order to satisfy the processing instructions for use in limited space, need as far as possible designs simplification to be designed, therefore in the present embodiment, be the numerical control structure with worm screw mechanical transmission In-put design, the spline input redesign of power shaft 403 is φ 35h6 optical axis platform, and selects compact conformation, resilient membrane type shaft joint 402 easy for installation to be connected with 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 with motor flange by screw 411, thereby is fixed on the table base 415.
Described flexible sheet shaft joint 402 adopts enclosed construction, therefore has two windows at motor flange 410, to make things convenient for flexible sheet shaft joint 402 screw fastenings.
See also Fig. 7, be the center that guarantees worm-gears and the position relationship that is installed in the linear guide rail on the table base 415, between the nut seat 413 that worm-gears is installed and table base 415, transition bracket 414 is housed, and be combined with adjusting pad 416 so as when assembling the match grinding size, guarantee the needs of position relationship.
Described rotary table Hydraulic Clamping Mechanism comprises: hydraulic jack 420, piston 421 and clamping pull bar 422 that transition nuts ring flange 418, disk 417 are connected with nut and are connected with rotary table base 415, described disk 417 is connected with the transition nuts ring flange and is connected with rotary table body 409 by screw, and piston 421 lower ends of described hydraulic jack are mounted on the clamping pull bar 422 in the lathe bed clamping slot.The 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 makes clamping pull bar 422 fixing with lathe bed main body 101 in the piston stroke scope.In the present embodiment, the lower end of described clamping pull bar is designed to the circular flange structure, and it can satisfy the needs of clamping force, moves freely in the lathe bed clamping slot in the time of making again it be in releasing orientation.The distance that clamping pull bar 422 is moved up designs in the stroke range of piston 421, when rotary table need to clamp, pressure oil drives clamping pull bar 422 with piston 421 and moves up, until clamp pull bar flange upper surface and the clamping of lathe bed clamping slot, thereby reach the clamped purpose of rotary table.
Because rotary table base 415 below limited spaces, therefore, in the present embodiment, the shell cancellation that Hydraulic Clamping Mechanism is larger, and adopting a L-type fixed mount 423, fixed mount one end to be fixed on the table base 415 by screw 424, the other end is fixed by the keyway on key shape plate and the separator housing 425, to prevent that the separator housing from rotating, this structure has not only satisfied the needs that use but also has saved the space.
Operation principle of the present utility model is:
At first workpiece is installed on the rotary table 400, and with workpiece and rotary table chucking, then starts the first servomotor 102 and drive rotary tables and directly be forwarded to the operating position, namely cutter frame mechanism 300 under; Torque motor 301 on the opening knife frame mechanism makes indexable disc type contour alloy gear milling cutter dish 310 rotations, and waters simultaneously cooling fluid.At this moment, the pressure oil by hydraulic jack 420 drives piston 421 to clamp pull bars 422 and moves up, until clamp pull bar flange upper surface and the clamping of lathe bed clamping slot upper surface, utilizes the clamping reaction force of lathe bed clamping slot upper surface that rotary table is clamped.Start the second servomotor 202 rotations on the column 200, drive ball-screw 204 and knife rest mainboard 207 and move down, and then make cutter frame mechanism be displaced downwardly to desired location, begin the machining to tooth punching groove before the large cylindrical gear workpieces roll flute.After a monodentate cutting is finished, the indexable disc type contour alloy gear milling cutter dish stop motion of cutter frame mechanism, the clamping cylinder of rotary table is unclamped, make rotary table mobile backward, cutter frame mechanism moves up, at this moment, the rotary table that rotarily drives by the worm screw on the rotary table, worm gear divides the tooth operation.After the operation of minute tooth was finished, rotary table advanced to the operating position again, and the cutting of second monodentate is carried out in the lathe above-mentioned action that circulates.

Claims (7)

1. 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, at described lathe bed column is installed, it is characterized in that: on described column one side the second servomotor is housed, and by the second shaft coupling connection ball-screw, described ball-screw is equipped with the leading screw locknut, pass through linear guides in this side of column, slide block is connected with the knife rest mainboard that can realize that cutter frame mechanism moves both vertically along the column work, on the described knife rest mainboard cutter frame mechanism is housed, indexable disc type contour alloy gear milling cutter dish is housed on the described cutter frame mechanism; Described rotary table adopts driven by servomotor worm and wormwheel kinematic pair structure, is provided with the Hydraulic Clamping Mechanism that is connected as a single entity with it in the rotary table lower end.
2. large cylindrical gear numerical control gulleting machine according to claim 1, it is characterized in that: the concrete structure of described cutter frame mechanism comprises: be installed in 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, described the first arc tooth synchronous belt wheel be connected by Timing Belt between the second arc tooth synchronous belt is taken turns, described the first wildhaber-novikov gear 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 knife bar on the knife bar seat, be connected with the stationary knife cover by key on the described knife bar, described stationary knife cover is equipped with indexable disc type contour alloy gear milling cutter dish by key.
3. large cylindrical gear numerical control gulleting machine according to claim 2, it is characterized in that: described cutter frame mechanism top also is provided with tension mechanism.
4. large cylindrical gear numerical control gulleting machine according to claim 3, 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.
5. large cylindrical gear numerical control gulleting machine according to claim 1 is characterized in that: the servomotor of described rotary table is connected with power shaft by flexible sheet shaft coupling, motor flange.
6. 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 are connected the hydraulic jack that is connected with the rotary table base, and the piston lower end of hydraulic jack is mounted on the clamping pull bar in the lathe bed clamping slot.
7. large cylindrical gear numerical control gulleting machine according to claim 6, it is characterized in that: the lower end of described clamping pull bar is designed to the circular flange structure.
CN 201220361909 2012-07-24 2012-07-24 Numerically-controlled gulleting machine for large cylindrical gear CN202684226U (en)

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Application Number Priority Date Filing Date Title
CN 201220361909 CN202684226U (en) 2012-07-24 2012-07-24 Numerically-controlled gulleting machine for large cylindrical gear

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Application Number Priority Date Filing Date Title
CN 201220361909 CN202684226U (en) 2012-07-24 2012-07-24 Numerically-controlled gulleting machine for large cylindrical gear

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CN202684226U true CN202684226U (en) 2013-01-23

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744466A (en) * 2012-07-24 2012-10-24 天津第一机床总厂 Large cylindrical gear numerical control gulleting machine
CN105414624A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Grooving machine
CN105414625A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control grooving machine with rotary table
CN105414594A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control grooving machine with rotary table
CN105414627A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control swinging type grooving machine
CN105414626A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control swinging type grooving machine
CN105414623A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Grooving machine
CN105598515A (en) * 2015-10-09 2016-05-25 滁州品之达电器科技有限公司 Numerical control grooving machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744466A (en) * 2012-07-24 2012-10-24 天津第一机床总厂 Large cylindrical gear numerical control gulleting machine
CN102744466B (en) * 2012-07-24 2014-07-16 天津第一机床总厂 Large cylindrical gear numerical control gulleting machine
CN105414624A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Grooving machine
CN105414625A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control grooving machine with rotary table
CN105414594A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control grooving machine with rotary table
CN105414627A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control swinging type grooving machine
CN105414626A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Numerical control swinging type grooving machine
CN105414623A (en) * 2015-10-09 2016-03-23 滁州品之达电器科技有限公司 Grooving machine
CN105598515A (en) * 2015-10-09 2016-05-25 滁州品之达电器科技有限公司 Numerical control grooving machine

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