CN102151844A - Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs - Google Patents
Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs Download PDFInfo
- Publication number
- CN102151844A CN102151844A CN 201110043761 CN201110043761A CN102151844A CN 102151844 A CN102151844 A CN 102151844A CN 201110043761 CN201110043761 CN 201110043761 CN 201110043761 A CN201110043761 A CN 201110043761A CN 102151844 A CN102151844 A CN 102151844A
- Authority
- CN
- China
- Prior art keywords
- axis
- screw
- knife rest
- axle
- spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Numerical Control (AREA)
Abstract
The invention discloses a numerical control turning method and turning device for concentric waney symmetrically-distributed arcs. The turning device comprises a machine tool body, a PMAC (programmable multi-axis controller), an electric knife rest, an X-axis server motor and an X-axis ball bearing screw as well as a Z-axis server motor and a Z-axis ball bearing screw; a spindle is arranged in a spindle box of the machine tool; the power output end of the spindle is provided with a chuck; the tail end of the spindle is provided with a coder; the X-axis ball bearing screw and the Z-axis ball bearing screw are respectively connected with the corresponding X-axis server motor and the Z-axis server motor in a driving way. The real time rotating frequency of the spindle is fed back to the PMAC through the coder arranged on the spindle; after capturing feedback pulse signals, the PMAC updates the target position information of the electric knife rest (X-axis) to lead a cutter on the electric knife rest to reciprocate with high precision on the X-axis direction; in the way, R72 arcs are turned when the X-axis advances; and R74 arcs are turned when the X-axis retreates; meanwhile, the feed motion of the electric knife rest on the Z-axis direction during the turning process is realized by the Z-axis.
Description
Technical field
The present invention relates to the Computerized Numerical Control processing technology field, particularly a kind of specially at the numerical control turning method and the numerical control turning device thereof of the non-round revolving body workpieces of not isometrical symmetrical distribution circular arc with one heart.
Background technology
In a lot of frame for movements, all can adopt non-round revolving parts, as internal combustion engine, camshaft, disc cam etc.In the processing of these parts, often need to adopt special equipment satisfying processing request, ubiquity cost of investment height, problem such as equipment flexibility degree is low.At present, the process technology for non-round revolving parts mainly contains two kinds: a kind of is to adopt the hard mould processing method, and another kind is soft profile modeling processing method (a digital control processing method).
Wherein, the hard mould processing method is promptly utilized the copying principle, and profile design one or one group of pattern according to institute's processing parts drive cutter by pattern then and do the cutting feed motion, process the part consistent, generally adopt machinery or hydraulic drive mechanism with the pattern shape.Be illustrated in figure 1 as the hard mould processing method of cam,, make the roller 3 that has cutter 2 reciprocating, thereby realize turning cam 4 by the rotation of pattern 1.Problems such as but there is the equipment cost height in this method processing, and the lathe adjustment cycle is long, and is easy to wear, and its machining accuracy is lower, flexible poor.
Another method of non-round revolving parts processing is soft profile modeling method (a digital control processing method).Soft profile modeling processing is by computer technology, with non-each supplemental characteristicization of circle contour size, forms the digitlization pattern, and carries out the corresponding mechanism of programming Control with this and realize turning processing.Its digital control system or under the DOS platform, build, its electric machine control system adopts single-chip microcomputer; Perhaps its digital control system adopts upper and lower computer, multiprocessor to coordinate the structure of control.Yet also there is following shortcoming in this method: 1, because the single-chip microcomputer disposal ability is limited, so the control performance of system is not high, can't satisfy the purpose of new control algolithm of realization and high speed, high frequency processing; 2, if digital control system adopts upper and lower computer, multiprocessor to coordinate control, then have the very high problem of cost, and this lathe is still a kind of special equipment, flexible poor.
Be depicted as the structural representation of certain type bent axle as Fig. 2 and 3, this bent axle is distributed with 8 balance weights in the axial direction, the cross section of each balance weight by be symmetrically distributed, with one heart but different two sections circular arc R 74 and the R72 of radius constitute.The balance weight of this part is typical non-round revolving body, realize processing, can adopt traditional hard mould method or soft profile modeling method, still its R74 and R72 circular arc, adopt these methods can't avoid the shortcoming of these methods, i.e. equipment cost height, precision low (hard mould method), flexible poor.
Summary of the invention
Goal of the invention of the present invention is: at the problem of above-mentioned existence, provide a kind of and can effectively solve the non-round revolving parts turning problem of not isometrical symmetrical distribution circular arc with one heart, equipment cost is low, equipment is flexible by force, turning accuracy is high not isometrical with one heart symmetrical distribution Circular Arc car controlling cutting method and numerical control turning device thereof based on the PMAC kinetic control system.
Technical scheme of the present invention is achieved in that a kind of numerical control turning method of not isometrical symmetrical distribution circular arc with one heart, may further comprise the steps: a), with one heart non-round revolving parts one end of not isometrical symmetrical distribution circular arc is connected on the spindle chuck, if described part is longer, then be resisted against the other end of part by tailstock; B), by the knife rest that is arranged on the lathe the non-round revolving parts by the step a) clamping is carried out turning; It is characterized in that:
In described step a), the main shaft in the main spindle box drives described non-round revolving parts rotation by chuck, is provided with encoder at the tail end of described main shaft, and described encoder can feed back to the PMAC controller with the real-time speed of main shaft;
In described step b), described knife rest moves in X-direction and Z-direction under the drive of X-axis ball screw and Z axle ball-screw, after the PMAC controller is caught the pulse signal of encoder feedback, upgrade the target position information of knife rest on X-direction, control drives the X-axis servomotor that is connected with the X-axis ball screw, cutter on the drive knife rest is done the reciprocating motion along X-direction, control simultaneously drives the Z axle servomotor that is connected with the Z shaft ball screw, and the cutter on the drive knife rest is done the feed motion along Z-direction.
The numerical control turning method of not isometrical symmetrical distribution circular arc with one heart of the present invention, it is in described step b), the time base of PMAC is controlled the execution speed with the FREQUENCY CONTROL knife rest of the main axis rotation of encoder feedback, the movement velocity of described knife rest is directly proportional with rotation frequency of spindle, and knife rest keeps synchronous with main shaft in all positions.
A kind of numerical control turning device of not isometrical symmetrical distribution circular arc with one heart, it is characterized in that: comprise machine tool main body, the PMAC controller, electric driving tool post, X-axis servomotor and ball-screw, Z axle servomotor and ball-screw, in lathe headstock, be provided with main shaft, the clutch end of described main shaft is provided with chuck, tail end at described main shaft is provided with encoder, described X-axis ball screw and Z axle ball-screw are arranged on the machine tool main body, described X-axis ball screw and Z axle ball-screw are connected with Z axle driven by servomotor with corresponding X-axis servomotor respectively, described electric driving tool post is reciprocating on X-direction respectively by X-axis ball screw and Z axle ball-screw, on Z-direction, do feed motion, described encoder, the X-axis servomotor is connected with described PMAC controller respectively with Z axle servomotor.
The numerical control turning device of not isometrical symmetrical distribution circular arc with one heart of the present invention, its described encoder is installed in the machine tool chief axis tail end, detects rotation frequency of spindle in real time.
The numerical control turning device of not isometrical symmetrical distribution circular arc with one heart of the present invention, its described X-axis ball screw is connected with Z axle servomotor with the X-axis servomotor respectively by no backlash shaft coupling with Z axle ball-screw.
The numerical control turning device of not isometrical symmetrical distribution circular arc with one heart of the present invention, its described X-axis ball screw and Z axle ball-screw adopt angular contact bearing to support.
The present invention is by feeding back to the PMAC controller with the encoder of the coaxial rotation of main shaft with the real-time frequency of main axis rotation, after the PMAC controller is caught this feedback pulse signal, upgrade the target position information of electric driving tool post (X-axis), make the cutter on the electric driving tool post on X-direction, do the high-frequency high-precision reciprocating motion, it is X-axis turning path circular arc when advancing, the big footpath of turning circular arc when X-axis is moved back, simultaneously, the Z axle is realized the feed motion of electric driving tool post on the Z direction in the turning process.
In sum, owing to adopted technique scheme, its beneficial effect is:
1, this method has successfully solved the turning problem of not isometrical symmetrical distribution circular arc with one heart, and the speed of mainshaft can be controlled in the 200r/min.
2, this equipment cost is low, and the complete machine cost is only about 80,000 RMB.
3, the powerful programing function of this equipment utilization PMAC controller can be realized the processing of a class, disk-like accessory, has general CNC lathe's function, and the flexibility of equipment is strong.
Description of drawings
Fig. 1 is the structural representation that adopts existing hard mould processing method machining cam.
Fig. 2 is the structural representation of certain type bent axle.
Fig. 3 is an A-A profile among Fig. 2.
Fig. 4 is the structural representation of numerical control turning device of the present invention.
Fig. 5 is a digital control system structure chart of the present invention.
Mark among the figure: 1 is pattern, and 2 is cutter, and 3 is roller, 4 is cam, and 5 is machine tool main body, and 6 is electric driving tool post, 7 is main spindle box, 8 is tailstock, and 9 is chuck, and 10 is the X-axis ball screw, 11 is the Z shaft ball screw, 12 is the X-axis servomotor, and 13 is Z axle servomotor, and R72, R74 are concentric not two sections arc radius of isometrical symmetrical distribution.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is done detailed explanation.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Shown in Figure 4 and 5, a kind of numerical control turning device of not isometrical symmetrical distribution circular arc with one heart, comprise machine tool main body 5, PMAC controller, electric driving tool post 6, be arranged on main spindle box 7 and tailstock 8 on the described machine tool main body 1, wherein, described machine tool main body 5 adopts C6140 lathe ray machine to carry out numerical control transformation, and the lathe bed material is a wear resistant cast iron, bed ways span 390mm, guide rail quenches and correct grinding through superaudio, and the planker track pastes wear-resisting soft PTFE ribbon; In described main spindle box 7, be provided with main shaft, spindle bore Φ 82mm, cutting force is big, can carry out high-rate cutting, main shaft operates steadily, the precision height, the clutch end of described main shaft is provided with chuck 9, be provided with 1024 lines/change coaxial rotary encoder at the tail end of described main shaft, the PMAC controller is the control centre of lathe, can solidify 1024 motor programs on the PMAC controller internal RAM, 32 PLC programs, because the flexibility and the high-performance of digital control system in open type, this numerically controlled lathe both can have been finished on-circular cross-section processing, and the repertoire with centre numerically controlled lathe is arranged simultaneously.
Described machine tool main body 1 is provided with X-axis ball screw 10 and Z axle ball-screw 11, described X-axis ball screw 10 and Z axle ball-screw 11 drive by no backlash shaft coupling with Z axle servomotor 13 with corresponding X-axis servomotor 12 respectively and are connected, stable drive, noiseless, described X-axis ball screw 10 and Z axle ball-screw 11 adopt angular contact bearing to support, and have overcome the noise, vibration and the driving error that adopt the clearance elimination gear transmission to cause; Described electric driving tool post 6 is reciprocating on X-direction respectively by X-axis ball screw 10 and Z axle ball-screw 11, does feed motion on Z-direction, and described encoder, X-axis servomotor 12 and Z axle servomotor 13 are connected with described PMAC controller respectively.
The Non-circular Section Turning function of this device mainly is to realize by the special software function of PMAC, at first obtain the on-circular cross-section data message, according to decoding to the spindle encoder signal, interpolation, the curing of calculating of base benchmark and clamping anchor point when finishing, base output frequency during according to spindle encoder, base is followed function and is finished real-time adjustment to the tool position when distinctive, adjusts the profile that the processing on-circular cross-section is followed in the tool position in real time.
A kind of numerical control turning method of not isometrical symmetrical distribution circular arc with one heart, may further comprise the steps: a), with one heart non-round revolving parts one end of not isometrical symmetrical distribution circular arc is connected to (the long other end that then is resisted against described part by tailstock of part) on the spindle chuck, main shaft in the main spindle box drives described non-round revolving parts rotation by chuck, tail end at described main shaft is provided with coaxial rotary encoder, and described encoder can feed back to the PMAC controller with the real-time speed of main shaft;
B), by the knife rest that is arranged on the lathe the non-round revolving parts by the step a) clamping is carried out turning; The time base of PMAC is controlled the execution speed with the FREQUENCY CONTROL knife rest of the main axis rotation of encoder feedback, and the movement velocity of described knife rest is directly proportional with rotation frequency of spindle, and knife rest keeps synchronous with main shaft in all positions; Described knife rest moves in X-direction and Z-direction under the drive of X-axis ball screw and Z axle ball-screw, after the PMAC controller is caught the pulse signal of encoder feedback, upgrade the target position information of knife rest on X-direction, control drives the X-axis servomotor that is connected with the X-axis ball screw, cutter on the drive knife rest is done the reciprocating motion along X-direction, control simultaneously drives the Z axle servomotor that is connected with the Z shaft ball screw, and the cutter on the drive knife rest is done the feed motion along Z-direction.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the numerical control turning method of a concentric not isometrical symmetrical distribution circular arc, may further comprise the steps: a), with one heart non-round revolving parts one end of not isometrical symmetrical distribution circular arc is connected on the spindle chuck, if described part is longer, then be resisted against the other end of part by tailstock; B), by the cutter that is arranged on the lathe cutter saddle the non-round revolving parts by the step a) clamping is carried out turning; It is characterized in that:
In described step a), the main shaft in the main spindle box drives described non-round revolving parts rotation by chuck, is provided with encoder at the tail end of described main shaft, and described encoder can feed back to the PMAC controller with the real-time speed of main shaft;
In described step b), described knife rest moves in X-direction and Z-direction under the drive of X-axis ball screw and Z axle ball-screw, after the PMAC controller is caught the pulse signal of encoder feedback, upgrade the target position information of knife rest on X-direction, control drives the X-axis servomotor that is connected with the X-axis ball screw, cutter on the drive knife rest is done the reciprocating motion along X-direction, control simultaneously drives the Z axle servomotor that is connected with the Z shaft ball screw, and the cutter on the drive knife rest is done the feed motion along Z-direction.
2. the numerical control turning method of not isometrical symmetrical distribution circular arc with one heart according to claim 1, it is characterized in that: in described step b), the time base of PMAC is controlled the execution speed with the FREQUENCY CONTROL knife rest of the main axis rotation of encoder feedback, the movement velocity of described knife rest is directly proportional with rotation frequency of spindle, and knife rest keeps synchronous with main shaft in all positions.
3. the numerical control turning device of a concentric not isometrical symmetrical distribution circular arc, it is characterized in that: comprise machine tool main body, the PMAC controller, electric driving tool post, X-axis servomotor and ball-screw, Z axle servomotor and ball-screw, in lathe headstock, be provided with main shaft, the clutch end of described main shaft is provided with chuck, tail end at described main shaft is provided with encoder, described X-axis ball screw and Z axle ball-screw are arranged on the machine tool main body, described X-axis ball screw and Z axle ball-screw are connected with Z axle driven by servomotor with corresponding X-axis servomotor respectively, described electric driving tool post is reciprocating on X-direction respectively by X-axis ball screw and Z axle ball-screw, on Z-direction, do feed motion, described encoder, the X-axis servomotor is connected with described PMAC controller respectively with Z axle servomotor.
4. the numerical control turning device of not isometrical symmetrical distribution circular arc with one heart according to claim 3, it is characterized in that: described encoder is installed in the machine tool chief axis tail end, detects rotation frequency of spindle in real time.
5. according to claim 3 or the 4 described numerical control turning devices of not isometrical symmetrical distribution circular arc with one heart, it is characterized in that: described X-axis ball screw is connected with the main shaft of X-axis servomotor with Z axle servomotor respectively by no backlash shaft coupling with Z axle ball-screw.
6. the numerical control turning device of not isometrical symmetrical distribution circular arc with one heart according to claim 5 is characterized in that: described X-axis ball screw and Z axle ball-screw adopt angular contact bearing to support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110043761 CN102151844A (en) | 2011-02-24 | 2011-02-24 | Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110043761 CN102151844A (en) | 2011-02-24 | 2011-02-24 | Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102151844A true CN102151844A (en) | 2011-08-17 |
Family
ID=44433706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110043761 Pending CN102151844A (en) | 2011-02-24 | 2011-02-24 | Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102151844A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335080A (en) * | 2012-12-23 | 2013-10-02 | 浙江大学 | Mounting support device of heavy-duty ball screw pair |
| CN103946606A (en) * | 2011-10-28 | 2014-07-23 | Ks科尔本施密特有限公司 | Functionally optimized design of a cylinder liner |
| CN105268999A (en) * | 2015-11-25 | 2016-01-27 | 卢文涛 | Machining method for turning non-circular deformed section through digital controlled lathe in follow-up mode |
| CN108555315A (en) * | 2018-04-20 | 2018-09-21 | 湖北钱潮精密件有限公司 | A kind of vertical numerical controlled lathe groove processing method |
| CN110814363A (en) * | 2019-09-05 | 2020-02-21 | 中国石油化工集团有限公司 | Method for processing crankshaft anisotropic multi-arc-surface balance fan plate |
| CN112958789A (en) * | 2021-01-20 | 2021-06-15 | 青岛黄海学院 | Cutting machining method suitable for rotary thin-wall parts |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1223405A (en) * | 1968-03-27 | 1971-02-24 | Hoesch Maschinenfabrik Ag | Improvements in or relating to machining of crankshafts |
| CN1647893A (en) * | 2004-09-20 | 2005-08-03 | 沈阳建筑大学 | High speed precision digital control grinding processing device based on PMAC |
-
2011
- 2011-02-24 CN CN 201110043761 patent/CN102151844A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1223405A (en) * | 1968-03-27 | 1971-02-24 | Hoesch Maschinenfabrik Ag | Improvements in or relating to machining of crankshafts |
| CN1647893A (en) * | 2004-09-20 | 2005-08-03 | 沈阳建筑大学 | High speed precision digital control grinding processing device based on PMAC |
Non-Patent Citations (3)
| Title |
|---|
| 《制造技术与机床》 20091231 曹辉，要小鹏，龚伟 非圆截面数控车削技术研究 , * |
| 《机械设计与制造》 20101108 要小鹏，殷国富，龚伟 PMAC时基控制在非圆零件车削中的应用 , * |
| 《江苏科技大学学报（自然科学版）》 20081031 张冰蔚，林杰 PMAC时基控制在非圆零件数控车削加工中的应用 , * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103946606A (en) * | 2011-10-28 | 2014-07-23 | Ks科尔本施密特有限公司 | Functionally optimized design of a cylinder liner |
| CN103335080A (en) * | 2012-12-23 | 2013-10-02 | 浙江大学 | Mounting support device of heavy-duty ball screw pair |
| CN103335080B (en) * | 2012-12-23 | 2016-01-20 | 浙江大学 | A kind of heavily loaded ball screw pair fittable slackening device |
| CN105268999A (en) * | 2015-11-25 | 2016-01-27 | 卢文涛 | Machining method for turning non-circular deformed section through digital controlled lathe in follow-up mode |
| CN108555315A (en) * | 2018-04-20 | 2018-09-21 | 湖北钱潮精密件有限公司 | A kind of vertical numerical controlled lathe groove processing method |
| CN110814363A (en) * | 2019-09-05 | 2020-02-21 | 中国石油化工集团有限公司 | Method for processing crankshaft anisotropic multi-arc-surface balance fan plate |
| CN110814363B (en) * | 2019-09-05 | 2022-02-25 | 中国石油化工集团有限公司 | Method for processing crankshaft balance fan plate |
| CN112958789A (en) * | 2021-01-20 | 2021-06-15 | 青岛黄海学院 | Cutting machining method suitable for rotary thin-wall parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102151844A (en) | Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs | |
| CN101195318A (en) | Multi-station digital-controlled carving machine | |
| CN102059602B (en) | Numerically controlled grinder for grinding taper hole and end face of motorized spindle | |
| CN108466140A (en) | Aviation thin-wall bearing noncircular raceway processing method | |
| CN207629755U (en) | A kind of Compound Machining grinding machine of cycloid pin wheel speed reducer pin gear casing | |
| CN104128973A (en) | Spindle vertical-horizontal turnover device | |
| CN203330839U (en) | Five-axis special-shaped curved surface grinder | |
| CN201519839U (en) | Multi-shaft linkage numerical control laser processing system | |
| CN208628852U (en) | A kind of numerically-controlled machine tool of achievable nonvolatile organic acid turning-milling complex processing | |
| CN102736574B (en) | High-speed and high-precision modularized direct-drive motor assembly line framework and construction method | |
| CN111482502A (en) | Rotary radial feeding numerical control spinning machine | |
| CN203380461U (en) | Rotating work table for true circular interpolation linear cutting machine | |
| CN111390565A (en) | Turning, milling and grinding integrated processing equipment | |
| CN209631903U (en) | Rotary radial feeding cnc spinning machine | |
| CN202377682U (en) | Concave-pit-shaped texture laser machining machine on inner surface of cylinder sleeve | |
| CN202123365U (en) | Tool platform of turning and grinding combined processing machine tool | |
| CN206779631U (en) | A kind of ring moulds wire cutting machine tool | |
| CN203210132U (en) | High-precision numerically-controlled internal grinding machine tool | |
| CN205112801U (en) | Engraving machine | |
| CN212420396U (en) | Turning, milling and grinding integrated processing equipment | |
| CN201385250Y (en) | Follow-up grinding digital control device | |
| CN202804190U (en) | Numerical control compound-axis turning mechanism for non-circular sections | |
| CN206028748U (en) | Lathe with high -precision numerical control feed system | |
| CN202894506U (en) | Numerically controlled lathe used for worm gear machining | |
| CN207669002U (en) | A kind of Intelligent Composite lathe with modularity external member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110817 |
|
| RJ01 | Rejection of invention patent application after publication |