CN102059418A - Cylindrical gear fully closed-loop numerical control processing system and method - Google Patents

Cylindrical gear fully closed-loop numerical control processing system and method Download PDF

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CN102059418A
CN102059418A CN 201010552620 CN201010552620A CN102059418A CN 102059418 A CN102059418 A CN 102059418A CN 201010552620 CN201010552620 CN 201010552620 CN 201010552620 A CN201010552620 A CN 201010552620A CN 102059418 A CN102059418 A CN 102059418A
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full cut
control module
processing
straight
electric spark
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CN102059418B (en
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陈锡侯
彭东林
张兴红
高忠华
杨继森
朱革
冯继琴
郑方燕
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Chongqing University of Technology
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Abstract

The invention relates to a cylindrical gear fully closed-loop numerical control processing system and a cylindrical gear fully closed-loop numerical control processing method. The cylindrical gear fully closed-loop numerical control processing system consists of an electric spark linear cutting machine, a numerical control rotary workbench and a fully closed-loop control unit, wherein the numerical control rotary workbench is arranged on a workbench of the electric spark linear cutting machine; the axis of the numerical control rotary workbench is parallel with an electrode wire of the electric spark linear cutting machine; and processing gear blanks are arranged on the numerical control rotary workbench. By the system and the method, the error during electric spark linear cutting is reduced and the processing precision of a gear is effectively improved.

Description

A kind of roller gear full cut-off number of rings control system of processing and processing method
Technical field
The present invention relates to a kind of precision optical machinery system of processing and method, particularly a kind of roller gear full cut-off number of rings control system of processing and processing method.
Background technology
Gear is a most important and most widely used class driving parts.The modal processing mode of gear has two kinds at present: a kind of is generate processing, and another kind is one division shaping processing.The generate processing method is to be that the motion of cutter and blank analogy gears engaged realizes the processing to gear by the lathe driving-chain, and one division shaping processing and utilization indexing mechanism carries out the monodentate tooth Profile Machining with forming tool after according to the tooth pitch calibration.Their common technical characterstics are by cutting tool blank to be applied cutting force to remove the required shape and size of material arrival part, and typical process equipment has gear-hobbing machine, gear shapping machine, gear grinding machines etc.The problem that this two kinds of processing methods exist is: one, the cutting force that applies in the processing not only can make cutter, lathe and blank etc. deform but also can cause vibration.This otherwise improved requirement to rigidity such as lathe, cutters, or influence the machining accuracy of gear; Two, machining accuracy is subject to the transmission accuracy of lathe driving-chain; Three, the Gear Processing of different tooth profile parameters need adopt different process tools.
Wire-cut Electrical Discharge Machining utilizes positive and negative electrode discharge generation moment high-temperature molten metal to realize the material removal, and process does not almost have cutting force.Wire EDM can be carried out roller gear processing, and the problem of avoiding above-mentioned processing cutting force to cause.But at present general electric spark linear cutting machine adopts the mode of X-Y twin shaft interpolation to approach various Processing Curve, and machining accuracy generally can only arrive about 0.015mm.Therefore, indexing accuracy and profile accuracy can't satisfy high-precision requirement when carrying out Gear Processing.
Summary of the invention
The objective of the invention is to address the above problem and a kind of error can reduce Wire-cut Electrical Discharge Machining the time is provided, effectively improve the roller gear full cut-off number of rings control system of processing and the processing method of Gear Processing precision.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of roller gear full cut-off number of rings control system of processing, it comprises electric spark linear cutting machine, NC rotary table and full cut-off ring control module, described NC rotary table is installed on the workbench of electric spark linear cutting machine, the NC rotary table axis is parallel with the wire electrode of electric spark linear cutting machine, the processing gear blank is installed on the NC rotary table, described electric spark linear cutting machine comprises: the line Cutting CNC, the displacement detecting parts of X-axis and Y-axis, the cutting execution unit, described line Cutting CNC is used to receive the machining information and the processing enabling signal of full cut-off number of rings control unit, and controls the lathe execution unit according to machining information after obtaining enabling signal and implement straight-line feed and electric spark cutting; Described X-axis and Y-axis displacement detecting parts are used for accurately measuring the displacement of described straight-line feed, and feed back to full cut-off ring control module; Described NC rotary table comprises: rotary table matrix, motion execution unit and Angular Displacement Detecting parts; Described motion execution unit according to the full cut-off ring control module that receives send with dynamic control signal, implement the servo-actuated swivel feeding; Described gyroaxis Angular Displacement Detecting parts are used for accurately measuring the angular displacement of NC rotary table, and feed back to full cut-off ring control module; Described full cut-off ring control module is used to receive operator's machining information, calculate the tooth pitch angle according to gear parameter, profile of tooth is resolved into straight-line feed and swivel feeding, send the machining information of straight-line feed to general electric spark NC linear cutting machine system, send enabling signal and begin processing, receive the feedback signal of the position detection component of general electric spark linear cutting machine X-axis or Y-axis, receive the feedback signal of NC rotary table gyroaxis position detection component, speed and displacement according to current existing each time straight-line feed, calculate speed and the displacement and the corresponding speed of gyration and the displacement of answering of next step straight-line feed, send servo-actuated revolution control signal, control NC rotary table servo-actuated swivel feeding, receive monodentate and machine signal, whether whole feeding finishes to judge whole gear, definite end processing is still controlled the numerical control turntable precision and is turned over a tooth pitch angle according to judged result, carries out the processing of next tooth.
Above-mentioned full cut-off ring control module obtains actual feeding displacement and calculates feed speed according to the straight-line displacement feedback signal, according to the straight-line feed displacement and the speed of reality, changes the error of the swivel feeding compensating line feeding of NC rotary table.
A kind ofly utilize above-mentioned roller gear full cut-off number of rings control system of processing to carry out the roller gear method for processing, it comprises the steps: that (1) input adds work gear information to full cut-off ring control module; (2) full cut-off ring control module calculates the tooth pitch angle according to machining information, and the flank profil machining locus is resolved into straight-line feed and swivel feeding; (3) the straight-line feed machining information is transferred to the digital control system of electric spark linear cutting machine; (4) electric spark linear cutting machine is carried out processing and is prepared the wait startup command under its digital control system control; (5) full cut-off ring control module sends the startup processing signal, and electric spark linear cutting machine comes into effect straight-line feed processing; (6) full cut-off ring control module starts NC rotary table simultaneously and implements corresponding swivel feeding; (7) the real-time detection of straight lines feeding of full cut-off ring control module displacement, calculated line feeding displacement and velocity deviation and next step servo-actuated rotary displacement and speed; (8) the control NC rotary table carries out servo-actuated revolution, compensating line feed speed and offset deviation; (9) repeat above-mentioned (7)-(8) step and finish, thereby finish the processing of monodentate flank profil until straight-line feed; (10) electric spark linear cutting machine sends to full cut-off ring control module and machines signal, waits for next time starting; (11) full cut-off ring control module judges whether to process whole flank profils, if finish, then shuts down, if do not have, then controls NC rotary table and rotates a tooth pitch angle, and repeat above-mentioned steps (5)-(11).
The present invention has obtained following technique effect:
1, the indexing accuracy of gear is guaranteed by the indexing accuracy of NC rotary table, and electric spark linear cutting machine only carries out straight-line feed along a fixed axis when carrying out tooth Profile Machining, NC rotary table carries out the servo-actuated revolution according to the physical location and the speed of straight-line feed, compensating line advances the error that the precision deficiency is brought greatly, therefore, described roller gear full cut-off number of rings control system of processing can effectively improve the indexing accuracy and the profile accuracy of Wire-cut Electrical Discharge Machining roller gear, can be applied in widely in the roller gear Wire-cut Electrical Discharge Machining of the higher various profiles of tooth of required precision;
2, with respect to the one division shaping processing of gear, described roller gear full cut-off number of rings control processing method adopts the spark machined profile of tooth, and the loss of process tool (wire electrode) is minimum, can not introduce additional mismachining tolerance, does not need to carry out earlier roughing;
3, add work gear with respect to Wire EDM with X-Y twin shaft interpolating method, described roller gear full cut-off number of rings control processing method only needs electric spark linear cutting machine to carry out the straight-line feed of a fixed axis, has improved its machining accuracy;
4, described roller gear full cut-off number of rings control processing method adopts closed-loop control, with servo-actuated swivel feeding compensation electric spark linear cutting machine straight-line feed error, has further improved the machining accuracy of gear.
Description of drawings
Fig. 1 is a roller gear full cut-off number of rings control system of processing schematic diagram;
Fig. 2 is the structural representation of NC rotary table and electric spark linear cutting machine;
Fig. 3 is the schematic diagram that the cylindrical gear profile machining locus resolves into straight-line feed and swivel feeding;
Fig. 4 is the principle schematic of servo-actuated compensation processing method;
Fig. 5 is the control flow chart of roller gear full cut-off number of rings control system of processing when carrying out Gear Processing.
Wherein: 1-electric spark linear cutting machine, 2-NC rotary table, 3-full cut-off ring control module, 4-NC rotary table axis, 5-wire electrode, 6-gear blank.
The specific embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
Embodiment 1
Referring to Fig. 1-2, a kind of roller gear full cut-off number of rings control system of processing, it comprises electric spark linear cutting machine 1, NC rotary table 2 and full cut-off ring control module 3 constitute, described NC rotary table is installed on the workbench of electric spark linear cutting machine, the axis 4 of NC rotary table is parallel with the wire electrode 5 of electric spark linear cutting machine, processing gear blank 6 is installed on the NC rotary table, described electric spark linear cutting machine comprises: the line Cutting CNC, the displacement detecting parts of X-axis and Y-axis, the cutting execution unit, described line Cutting CNC is used to receive the machining information and the processing enabling signal of full cut-off number of rings control unit, and controls the lathe execution unit according to machining information after obtaining enabling signal and implement straight-line feed and electric spark cutting; Described X-axis and Y-axis displacement detecting parts are used for accurately measuring the displacement of described straight-line feed, and feed back to full cut-off ring control module; Described NC rotary table comprises: rotary table matrix, motion execution unit and Angular Displacement Detecting parts; Described motion execution unit according to the full cut-off ring control module that receives send with dynamic control signal, implement the servo-actuated swivel feeding; Described gyroaxis Angular Displacement Detecting parts are used for accurately measuring the angular displacement of NC rotary table, and feed back to full cut-off ring control module; Described full cut-off ring control module is used to receive operator's machining information, calculate the tooth pitch angle according to gear parameter, profile of tooth is resolved into straight-line feed and swivel feeding, send the machining information of straight-line feed to general electric spark NC linear cutting machine system, send enabling signal and begin processing, receive the feedback signal of the position detection component of general electric spark linear cutting machine X-axis or Y-axis, receive the feedback signal of NC rotary table gyroaxis position detection component, speed and displacement according to current existing each time straight-line feed, calculate speed and the displacement and the corresponding speed of gyration and the displacement of answering of next step straight-line feed, send servo-actuated revolution control signal, control NC rotary table servo-actuated swivel feeding, receive monodentate and machine signal, whether whole feeding finishes to judge whole gear, definite end processing is still controlled the numerical control turntable precision and is turned over a tooth pitch angle according to judged result, carries out the processing of next tooth.
Referring to Fig. 3, the machining locus line of gear-profile can be by the wire electrode edge X-o-yCoordinate system yThe relative straight-line feed of axle and processed gear are around its center O 1 The swivel feeding of point is synthetic.Among Fig. 3 (a), (b), (c), (d), (e), (f)Describe be 6 points on the described flank profil machining locus line ( 0, 1, 2, 3, 4, 5) situation, the straight-line feed coordinate of 6 some correspondences is respectively y 0 , y 1 , y 2 , y 3 , y 4 , y 5 , the swivel feeding coordinate is respectively
Figure DEST_PATH_IMAGE002
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Figure DEST_PATH_IMAGE004
, ,
Figure DEST_PATH_IMAGE008
,
Figure 2010105526208100002DEST_PATH_IMAGE010
,
Figure DEST_PATH_IMAGE012
Therefore, the machining locus line of flank profil can be decomposed into Fig. 3 (g)Shown wire electrode edge X-o-yRelative straight-line feed and Fig. 3 of coordinate system y axle (h)Shown processed gear is around its centre of gyration O 1 Swivel feeding.Only list 6 points among the figure for convenience of description, decomposite more coordinate points according to requirement on machining accuracy during actual the decomposition.
Referring to Fig. 4, described servo-actuated compensation processing method is meant in the actual processing, be subjected to the spark discharge gap, the part to be processed material homogeneity, the influence of factors such as flushing liquor degree of purity, the displacement of straight-line feed and given feeding displacement and the speed of speed meeting off-design, full cut-off ring control module obtains actual feeding displacement and calculates feed speed according to the straight-line displacement feedback signal, according to the straight-line feed displacement and the speed of reality, change the error of the swivel feeding compensating line feeding of NC rotary table.Fig. 4 ( a) be the displacement curve of the given straight-line feed of design; Fig. 4 ( b) be the swivel feeding displacement curve of the correspondence that decomposites according to design flank profil and straight-line feed displacement curve; Fig. 4 ( c) be actual straight-line feed displacement curve, the theoretical curve that its off-design is given will cause mismachining tolerance; As adopt Fig. 4 ( c) shown in actual straight-line feed displacement and Fig. 4 ( b) shown in the swivel feeding displacement with composite diagram 4( f) shown in the flank profil machining locus of error is arranged; Fig. 4 ( d) be the swivel feeding curve that carries out the servo-actuated compensation according to detection of straight lines feeding displacement in real time, it can compensating line feeding displacement and the mismachining tolerance brought of velocity deviation, synthetic flank profil machining locus such as Fig. 4 ( e) shown in.
Embodiment 2
Referring to Fig. 5, a kind of roller gear full cut-off number of rings control processing method, it comprises the steps: that (1) input adds work gear information to full cut-off ring control module; (2) full cut-off ring control module calculates the tooth pitch angle according to machining information, and the flank profil machining locus is resolved into straight-line feed and swivel feeding; (3) the straight-line feed machining information is transferred to the digital control system of electric spark linear cutting machine; (4) electric spark linear cutting machine is carried out processing and is prepared the wait startup command under its digital control system control; (5) full cut-off ring control module sends the startup processing signal, and electric spark linear cutting machine comes into effect straight-line feed processing; (6) full cut-off ring control module starts NC rotary table simultaneously and implements corresponding swivel feeding; (7) the real-time detection of straight lines feeding of full cut-off ring control module displacement, calculated line feeding displacement and velocity deviation and next step servo-actuated rotary displacement and speed; (8) the control NC rotary table carries out servo-actuated revolution, compensating line feed speed and offset deviation; (9) repeat above-mentioned (7)-(8) step and finish, thereby finish the processing of monodentate flank profil until straight-line feed; (10) electric spark linear cutting machine sends to full cut-off ring control module and machines signal, waits for next time starting; (11) full cut-off ring control module judges whether to process whole flank profils, if finish, then shuts down, if do not have, then controls NC rotary table and rotates a tooth pitch angle, and repeat above-mentioned steps (5)-(11).
Operating principle of the present invention:
Roller gear full cut-off number of rings control processing method resolves into precision indexing and the digital control processing of monodentate flank profil Wire EDM closed loop with the roller gear process, monodentate tooth Profile Machining track is resolved into straight-line feed and swivel feeding, NC rotary table is placed on the electric spark linear cutting machine workbench, the axis of rotation of NC rotary table and the wire electrode of Wire EDM are parallel to each other, the workbench of Wire EDM provides straight-line feed, NC rotary table on it provides precision indexing and servo-actuated swivel feeding, is used to realize the Wire-cut Electrical Discharge Machining of high class gear.
Described roller gear full cut-off number of rings control system of processing is made of general electric spark linear cutting machine, NC rotary table and closed-loop control system.Described precision indexing is meant: according to the number of teeth of processed gear determine adjacent two teeth at a distance of angle, NC rotary table drives processed gear and rotates respective corners displacement and location; Described monodentate servo-actuated digital control processing is meant: the monodentate profile of tooth is decomposed into rectilinear motion and gyration, provide the rectilinear motion feeding by general electric spark linear cutting machine, provide the gyration feeding by rotary table, closed-loop control system detects the displacement and the speed of electric spark linear cutting machine straight-line feed in real time, and calculating corresponding rotary displacement and speed in view of the above, the control rotary table carries out accurate servo-actuated swivel feeding.
Described general electric spark linear cutting machine has the required various basic functions of general Wire-cut Electrical Discharge Machining, and has the input and output signal line to be connected with closed-loop control system.Described input signal cable is used to receive the programming information and the enabling signal of closed-loop control system input.Described programming information is meant that full cut-off number of rings control system carries out rectilinear motion to profile of tooth and the pairing Wire-cut Electrical Discharge Machining information of straight-line trajectory that the back obtains is decomposed in gyration, is embodied as various machining codes and machined parameters etc.; Described output signal line is used for the monodentate tooth Profile Machining to be provided to closed-loop control system after finishing and finishes signal.Described general electric spark linear cutting machine only carries out in Gear Processing along the feeding of a certain definite axle (X-axis or Y-axis).The straight-line displacement detection part is installed on its feed shaft provides actual feeding coordinate to full cut-off number of rings control system.
Described NC rotary table is used for the processed gear workpiece of clamping, and be fixed on the work top of above-mentioned general electric spark linear cutting machine, axis of rotation is parallel with the wire electrode of electric spark linear cutting machine, can under the instruction of closed-loop control system, carry out precision indexing and continuous servo-actuated revolution, have output signal line to be connected with closed-loop control system.Described NC rotary table is finished two relatively independent work in whole Gear Processing process.One: in the monodentate tooth Profile Machining, carry out the servo-actuated swivel feeding according to the instruction of closed-loop control system; Its two: after the monodentate tooth Profile Machining is finished, under the instruction of closed-loop control system, carry out calibration location, prepare next monodentate tooth Profile Machining according to the tooth pitch angle that adds work gear.The gyration of described NC rotary table is directly controlled by closed-loop control system, is delivered to by driving-chain on the gyroaxis of NC rotary table.The Angular Displacement Detecting parts are housed on the gyroaxis, detect the angular displacement and the speed of rotary table in real time, and feed back to closed-loop control system by output signal line.
Because in the processing, the indexing accuracy of gear is guaranteed by the indexing accuracy of NC rotary table.And electric spark linear cutting machine only carries out straight-line feed along a fixed axis when carrying out tooth Profile Machining, NC rotary table carries out the servo-actuated revolution according to the physical location and the speed of straight-line feed, and compensating line advances the not enough error of bringing of giving of precision greatly.Therefore, described roller gear full cut-off number of rings control system of processing can effectively improve the indexing accuracy and the profile accuracy of Wire-cut Electrical Discharge Machining roller gear, can be applied in widely in the roller gear Wire-cut Electrical Discharge Machining of the higher various profiles of tooth of required precision.
Innovative point of the present invention is:
(1) processing of roller gear is resolved into precision indexing and the digital control processing of monodentate flank profil Wire EDM closed loop;
(2) monodentate flank profil machining locus is resolved into straight-line feed and swivel feeding, electric spark linear cutting machine only need provide the straight-line feed of a fixed axis, and NC rotary table provides swivel feeding;
(3) electric spark linear cutting machine, NC rotary table and full cut-off ring control module constitute a closed-loop system, behind the position and speed feedback of the feeding of full cut-off ring control module detection of straight lines, can control NC rotary table and carry out the servo-actuated swivel feeding, compensating line feeding error.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and is out of shape interior.

Claims (3)

1. roller gear full cut-off number of rings control system of processing, it is characterized in that: it comprises that electric spark linear cutting machine (1), NC rotary table (2) and full cut-off ring control module (3) constitute, described NC rotary table (2) is installed on the workbench of electric spark linear cutting machine (1), the axis (4) of NC rotary table (2) is parallel with the wire electrode (5) of electric spark linear cutting machine (1), and processing gear blank (6) is installed on the NC rotary table (2); Described electric spark linear cutting machine (1) has the input and output signal line and is connected with full cut-off ring control module, described input signal cable is used to receive the programming information and the enabling signal of full cut-off ring control module input, and described output signal line is used for the monodentate tooth Profile Machining to be provided to closed-loop control system after finishing and finish signal;
Described electric spark linear cutting machine (1) comprising: the displacement detecting parts of line Cutting CNC, X-axis and Y-axis and cutting execution unit, described line Cutting CNC is connected with full cut-off number of rings control unit, and by control line connection cutting execution unit, be used to receive the machining information and the processing enabling signal of full cut-off number of rings control unit, and after obtaining enabling signal, control the lathe execution unit according to machining information and implement straight-line feed and electric spark cutting; Described X-axis is connected full cut-off ring control module with Y-axis displacement detecting parts by holding wire, is installed in feeding on the axle of electric spark linear cutting machine, is used for accurately measuring the displacement of described straight-line feed, and feeds back to full cut-off ring control module;
Described NC rotary table (2) comprising: rotary table matrix, motion execution unit and Angular Displacement Detecting parts; Described motion execution unit is connected with full cut-off ring control module, according to the full cut-off ring control module that receives send with dynamic control signal, implement the servo-actuated swivel feeding; Described gyroaxis Angular Displacement Detecting parts connect full cut-off ring control module by holding wire, are used for accurately measuring the angular displacement of NC rotary table, and feed back to full cut-off ring control module;
Described full cut-off ring control module (3) is used to receive operator's machining information, calculate the tooth pitch angle according to gear parameter, profile of tooth is resolved into straight-line feed and swivel feeding, send the machining information of straight-line feed to general electric spark NC linear cutting machine system, send enabling signal and begin processing, receive the feedback signal of the position detection component of general electric spark linear cutting machine X-axis or Y-axis, receive the feedback signal of NC rotary table gyroaxis position detection component, speed and displacement according to current existing each time straight-line feed, calculate speed and the displacement and the corresponding speed of gyration and the displacement of answering of next step straight-line feed, send servo-actuated revolution control signal, control NC rotary table servo-actuated swivel feeding, receive monodentate and machine signal, whether whole feeding finishes to judge whole gear, definite end processing is still controlled the numerical control turntable precision and is turned over a tooth pitch angle according to judged result, carries out the processing of next tooth.
2. roller gear full cut-off number of rings control system of processing according to claim 1, it is characterized in that: described full cut-off ring control module obtains actual feeding displacement and calculates feed speed according to the straight-line displacement feedback signal, according to the straight-line feed displacement and the speed of reality, change the error of the swivel feeding compensating line feeding of NC rotary table.
3. one kind is utilized claim 1 or 2 described roller gear full cut-off number of rings control systems of processing to carry out the roller gear method for processing, it is characterized in that: it comprises the steps: that (1) input adds work gear information to full cut-off ring control module; (2) full cut-off ring control module calculates the tooth pitch angle according to machining information, and the flank profil machining locus is resolved into straight-line feed and swivel feeding; (3) the straight-line feed machining information is transferred to the digital control system of electric spark linear cutting machine; (4) electric spark linear cutting machine is carried out processing and is prepared the wait startup command under its digital control system control; (5) full cut-off ring control module sends the startup processing signal, and electric spark linear cutting machine comes into effect straight-line feed processing; (6) full cut-off ring control module starts NC rotary table simultaneously and implements corresponding swivel feeding; (7) the real-time detection of straight lines feeding of full cut-off ring control module displacement, calculated line feeding displacement and velocity deviation and next step servo-actuated rotary displacement and speed; (8) the control NC rotary table carries out servo-actuated revolution, compensating line feed speed and offset deviation; (9) repeat above-mentioned (7)-(8) step and finish, thereby finish the processing of monodentate flank profil until straight-line feed; (10) electric spark linear cutting machine sends to full cut-off ring control module and machines signal, waits for next time starting; (11) full cut-off ring control module judges whether to process whole flank profils, if finish, then shuts down, if do not have, then controls NC rotary table and rotates a tooth pitch angle, and repeat above-mentioned steps (5)-(11).
CN2010105526208A 2010-11-22 2010-11-22 Cylindrical gear fully closed-loop numerical control processing system and method Expired - Fee Related CN102059418B (en)

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Publication number Priority date Publication date Assignee Title
CN102922321A (en) * 2012-10-30 2013-02-13 深圳市大族激光科技股份有限公司 Air clamp stretching and stagnate-preventing method and system and air clamp control device
CN110560811A (en) * 2019-08-15 2019-12-13 武汉机床有限责任公司 Control method and system of PCD cutter wire-electrode cutting five-axis numerical control software

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JPH0825500A (en) * 1994-07-13 1996-01-30 Amutetsuku Kk Method and apparatus for producing mold of gear made of synthetic resin and tooth form planning method and device of mold of gear made of synthetic resin
CN1137961A (en) * 1995-09-28 1996-12-18 南京航空航天大学 Electric spark staggered expansion machining method of fine-pitch involute gear
CN101007364A (en) * 2007-01-26 2007-08-01 北京科技大学 Processing method of asymmetric gear with two pressure angles
CN201009022Y (en) * 2006-11-22 2008-01-23 江苏三星机械制造有限公司 Electric spark wire cutting machine tool special for machining gear

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Publication number Priority date Publication date Assignee Title
JPS54141495A (en) * 1978-04-27 1979-11-02 Mitsubishi Electric Corp Electric wire cutting apparatus
JPH0825500A (en) * 1994-07-13 1996-01-30 Amutetsuku Kk Method and apparatus for producing mold of gear made of synthetic resin and tooth form planning method and device of mold of gear made of synthetic resin
CN1137961A (en) * 1995-09-28 1996-12-18 南京航空航天大学 Electric spark staggered expansion machining method of fine-pitch involute gear
CN201009022Y (en) * 2006-11-22 2008-01-23 江苏三星机械制造有限公司 Electric spark wire cutting machine tool special for machining gear
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922321A (en) * 2012-10-30 2013-02-13 深圳市大族激光科技股份有限公司 Air clamp stretching and stagnate-preventing method and system and air clamp control device
CN102922321B (en) * 2012-10-30 2015-09-16 大族激光科技产业集团股份有限公司 Gas folder opens foolproof method, system and gas folder control device
CN110560811A (en) * 2019-08-15 2019-12-13 武汉机床有限责任公司 Control method and system of PCD cutter wire-electrode cutting five-axis numerical control software

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