CN100361783C - Digital profile grinder - Google Patents

Digital profile grinder Download PDF

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Publication number
CN100361783C
CN100361783C CNB2005100249551A CN200510024955A CN100361783C CN 100361783 C CN100361783 C CN 100361783C CN B2005100249551 A CNB2005100249551 A CN B2005100249551A CN 200510024955 A CN200510024955 A CN 200510024955A CN 100361783 C CN100361783 C CN 100361783C
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CN
China
Prior art keywords
carriage
planker
slide plate
revolving bed
revolution
Prior art date
Application number
CNB2005100249551A
Other languages
Chinese (zh)
Other versions
CN1672871A (en
Inventor
范灏
陈伟
胡德金
石宏伟
陆旭红
陈惠德
曹月华
陈贤国
许黎明
裴景玉
Original Assignee
上海第三机床厂
上海交通大学
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Application filed by 上海第三机床厂, 上海交通大学 filed Critical 上海第三机床厂
Priority to CNB2005100249551A priority Critical patent/CN100361783C/en
Publication of CN1672871A publication Critical patent/CN1672871A/en
Application granted granted Critical
Publication of CN100361783C publication Critical patent/CN100361783C/en

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Abstract

The present invention discloses a digital profile grinder which is composed of a host machine and an auxiliary machine station, wherein the host machine is a full sealed structure, a multifunctional working table is arranged on the right of a bed body, and a grinding wheel frame and a slide seat are arranged on the left side of the bed body, a CCD detection device is arranged on the upper part of the bed body, and an electric cabinet is positioned on the back side of the host machine and is integrated with the host machine; a sweeping device, a cooling device, an air balancing and braking controlling station are integrally arranged on the auxiliary machine station. The present invention is a multifunctional precision grinding machine tool which uses an image identification technique and integrates on-line detection, on-line compensation, on-line finishing of a grinding wheel and open type multishaft digital control. The multishaft digital control is integrated with image recognition processing, at most eight shafts which comprise seven servo rotating motor and one servo linear motor can be controlled, the linkage of at most six shafts can be realized, and the control shafts can be differently combined. The present invention has the characteristics of beautiful appearance and strong man-machine suitability, and is suitable for the machining of various components with precise complex outlines.

Description

Digital profile grinder
Technical field
The present invention relates to a kind of profile grinder, particularly a kind of digital profile grinder that collects the multifunctional accurate grinding of online detection, online compensation, the online finishing of emery wheel and open multiaxis Digital Control.
Background technology
At present, be applicable to various accurate complex outlines, mainly contain optical contour grinder as the machining tool of male and female mold, molding cutter, calliper, roller etc.As the domestic MK9025 numerical control optical contour grinder of producing by Shanghai Machine Tool Works No.3 etc., this grinding machine has obtained and has applied, yet it has weak point: 1, the online detection in workpiece process is to detect by geometric optics, can only make qualitative discrimination to processed precision, can not quantize; 2, it is reciprocating that the grinding knife tool emery wheel adopts crank connecting link, and travel position can not be controlled; 3, workpiece processing is needed segmental machining, then need adjust the emery wheel angle, produce Undercutting Phenomenon, can not once-forming; 4, because online detection is to detect by geometric optics, do not have online compensation again, therefore, precision is lower, can not satisfy the production needs.
Summary of the invention
The present invention will overcome the deficiencies in the prior art, and a kind of digital profile grinder that collects the multifunctional accurate grinding of online detection, online compensation, the online finishing of emery wheel and open multiaxis Digital Control is provided.
Technical scheme of the present invention is: a kind of digital profile grinder, form by main and auxiliaries station two parts, main frame is a full-closed structure, the right is provided with multi-functional workbench on the lathe bed, and the left side is provided with grinding carriage and slide, and top is the CCD checkout gear, the electricity cabinet is positioned at the main frame rear side, and be integral with host groups, be characterized in that collection is by dust exhaust apparatus, cooling device, air balance and the control station and form one of braking on the described subsidiary engine station; Described multi-functional workbench is made up of revolving bed and cross saddle, and wherein cross saddle is positioned on the revolving bed and with revolving bed and fixedlys connected; Grinding carriage is made up of emery wheel support body shell, base, slide plate revolving bed and reciprocal slide plate, and wherein base is fixedly connected on the slide; Back and forth slide plate is positioned at the front end of slide plate revolving bed, the emery wheel carriage is housed on the slide plate, slide plate is built-in with balance cylinder and pneumatic brake, is provided with between slide plate and the slide plate revolving bed to drive the linear servo-actuator that slide plate pumps, and emery wheel body shell inner slider revolving bed is provided with worm couple.Slide is positioned under the grinding carriage, by descending planker, middle carriage and going up planker and form the cross saddle group, the longitudinal axis of slide is the U axle, lateral shaft is the V axle, the feed mechanism that is provided with straight-line rolling guide set and is made up of servomotor, shaft coupling, ball screw assembly, between following planker and middle carriage, middle carriage and the last planker.
Described revolving bed is to form at revolution support and revolution planker, is provided with a revolution connecting axle between revolution support and the revolution planker; Revolution is dragged and is provided with the feed mechanism that servomotor, worm couple are formed below pulling.
Described cross saddle is by following planker, middle carriage, goes up planker (being work top) formation, and following planker and middle carriage lower guideway longitudinally X-direction are arranged; Middle carriage upper rail and last planker are arranged the feed mechanism that is provided with straight-line rolling guide set and is made up of servomotor, shaft coupling, ball screw assembly, between following planker and middle carriage and middle carriage and the last planker along horizontal Y direction.
Described full-closed structure is to adopt spliced totally-enclosed cover, interconnects between each case jigsaw and fixedlys connected with main frame; Totally-enclosed cover front side is equipped with outward opening sliding door, the left and right sides observation window that can outwards open all is housed.
The CCD checkout gear is made up of to apparatus for adjusting position CCD system, objective lens, light source and Z.
The present invention is the application image recognition technology, the multifunctional accurate grinding lathe of the online detection of collection lathe, online compensation, the online finishing of emery wheel and open multiaxis Digital Control.This lathe is used for the online detection of precise curve grinding with image recognition technology, has realized the Digital Control of accurate detection and compensation; Linear electric motors are used for emery wheel move back and forth, realized the precision control of reciprocating stroke, speed.Adopt multi-functional compound motion numerical control table, NC table, make emery wheel cutting have approximation method, realized that the workpiece curved profile processes one-time formed requirement to following function.
Employing has structures such as the accurate cross table of revolute function and multivariant grinding carriage; Dispose accurate CCD digital projection imager and do online detection; And adopt open multiaxis Digital Control.Make this lathe can realize six controls of digitlization, wherein two interpolations, and can need to expand to eight by processing.
Adopt linear electric motors, in use do not have wearing and tearing, need not to carry out the maintenance of driving member; And linear electric motors adopt the linear displacement feedback, the control of full cut-off ring, and the positioning accuracy height, good stability, transmission mechanism is simple.
Use the CCD detection system, substitute the optical projection detection system, make the testing result quantification, having avoided the people is the deviation of distinguishing, has improved the accuracy of detection to workpiece.
This lathe makes full use of the advantage of digital control system in open type, carries out multiaxis Digital Control and image recognition processing integrated.Therefore, can control eight axles at most, comprising seven servo electric rotating machines and a servo linear motor, can realize six-axis linkage at most, and can carry out different combinations Control Shaft.
This lathe is an enclosed construction, and it is generous to have a good looking appearance, the characteristics that man-machine suitability is strong.Be applicable to the processing of various accurate complex outlines, as male and female mold, molding cutter, calliper, roller etc.
Description of drawings
Fig. 1 is a schematic perspective view of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is the right view of Fig. 2;
Fig. 4 is the Working table structure schematic diagram;
Fig. 5 is a work table rotation holder structure schematic diagram;
Fig. 6 is the left cutaway view of Fig. 5;
Fig. 7 is the grinding carriage structural representation;
Fig. 8 is Fig. 7 cutaway view of bowing;
Fig. 9 is the slide carriage structure schematic diagram.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figures 1 to 3, digital profile grinder is made up of main and auxiliaries station two parts.Main frame is a full-closed structure, and the right is multi-functional workbench 6 on the lathe bed 1, and the left side is grinding carriage 3 and slide 2, and top is CCD detection system 4, and electric cabinet 9 is positioned at the main frame rear side, and is integral with host groups; Dust exhaust apparatus, cooling device, air balance and brake control station etc. are arranged on the subsidiary engine station, and form one.Convenient transportation and Installation and Debugging.
Totally-enclosed cover 8 adopts spliced, and each case layout not only interconnects but also fixedly connected with main frame; The right is provided with electrical equipment operation control box 10 before the totally-enclosed cover 8; Outward opening sliding door 12 is adorned in the front side, all there is the observation window 11 that can outwards open the left and right sides, so that workpiece is installed and the processing monitoring; The top of seal bootr has the skylight, so that the main frame handling.
As Fig. 1,4,5, shown in 6, multi-functional workbench 6 is made up of revolving bed 7, cross saddle 13, and wherein cross saddle 13 is positioned on the revolving bed 7 and with revolving bed 7 and fixedlys connected.Wherein, revolving bed 7 is made up of revolution support 29 and revolution planker 27, is provided with a revolution connecting axle 28 between revolution support 29 and the revolution planker 27; Revolution planker 27 adopts slidingtype steel guideway structure, and revolution is dragged to pull the feed mechanism of being made up of servomotor 30, worm couple 31 is housed below 27.Cross saddle 13 is by following planker 20, middle carriage 22, goes up planker 24 (being work top) formation, and following planker 20 and middle carriage 22 lower guideways longitudinally X-direction are arranged; Middle carriage 22 upper rails and last planker 24 are arranged along horizontal Y direction; the feed mechanism that is provided with straight-line rolling guide set 23 between following planker 20 and middle carriage 22 and middle carriage 22 and the last planker 24 and is made up of servomotor 25, shaft coupling 26, ball screw assembly, 21, the circular guideway face draws cover protected with sliding.
Workpiece and annex are installed in the front portion of table top.Workbench vertical (X-axis) horizontal (Y-axis) by CNC control, can be made the diaxon moving interpolation to motion, realizes the orbiting motion of surface of the work contour curve.
The maximum amount of movement 400mm of X-axis
The maximum amount of movement 100mm of Y-axis
X, Y-axis feed speed 0.5~1000mm/min
X, the minimum feeding equivalent of Y-axis 0.0001mm/ pulse
C axle amount of movement ± 30 °
C axle speed of gyration 0.1~10r/min
0.001 °/pulse of C axle minimum revolution equivalent
27 motions of work table rotation planker are numerical control linked axle by CNC control, realize that the process medium plain emery wheel root of processing can be dodged controlledly, and promptly Jia Gong approximation method is to machining functions.
As shown in Figs. 7-9, grinding carriage 3 is made up of emery wheel support body shell 53, base 46, slide plate revolving bed 51 and reciprocal slide plate 47, and wherein base 46 is fixedly connected on the slide 2; Back and forth slide plate 47 is positioned at the front end of slide plate revolving bed 51, emery wheel carriage 49 is housed on the slide plate 47, slide plate 47 is built-in with balance cylinder 48 and pneumatic brake 54, be provided with between slide plate 47 and the slide plate revolving bed 51 and drive the linear servo-actuator 50 that slide plate 47 pumps, emery wheel body shell 53 inner slider revolving beds 51 are provided with worm couple 52, are used to adjust emery wheel reciprocating rotating angle.
Grinding carriage 3 is positioned on the slide 2, on the grinding carriage slide plate 47 grinding tool is installed.The drive emery wheel 5 that moves up and down of grinding carriage slide plate 47 is reciprocating, drives emery wheel by slide 2 and does feed motion or tool setting location.
Grinding carriage 3 is the multiple degrees of freedom body, can realize up and down reciprocatingly (Z axle) motion of slide plate 47, and turn round around two trunnion axis (X, Y-axis) respectively.
Slide plate 47 (Z axle) motion up and down reciprocatingly is numerical control linked axle by CNC control.
Slide plate 47 drives grinding tool and pumps, and realizes the processing to the side plane of workpiece.Can realize the processing of the primary clearance and the both sides relief angle of workpiece around the revolution of two trunnion axis.
Slide plate 47 adopts straight-line rolling formula guide rail structure, directly drives skateboarding by the linear servo motor.
Z axle reciprocating stroke 0~120mm
30~250 times/mm of Z axle reciprocal time
The minimum feeding equivalent of Z axle 0.001mm/ pulse
Around X-axis revolution amount-2~30 °
Around Y-axis revolution amount ± 6 °
Slide 2 is positioned at grinding carriage 3 times, by descending planker 40, middle carriage 41 and going up planker 43 and form cross saddle, the longitudinal axis of slide 2 is the U axle, lateral shaft is the V axle, the feed mechanism that is provided with straight-line rolling guide set 45 between following planker 40 and middle carriage 41, middle carriage 41 and the last planker 43 and is made up of servomotor 44, shaft coupling 42, ball-screw byproduct 55.
Slide 2 vertical (U axle) horizontal (V axle) by CNC control, is numerical control linked axle to motion, makes the tool setting location and the compensating motion of emery wheel 5.
U axle amount of movement 60mm
V axle amount of movement 80mm.
U, V axle feed speed 1~1000mm/min
The minimum feeding equivalent of U axle 0.001mm/ pulse
CCD checkout gear 4 is made up of to apparatus for adjusting position CCD system, objective lens, light source and Z.
Use the digital image-forming technology process is carried out sampling analysis, objective lens, CCD system and reflection source device are combined into one, and are an absolute construction.CCD system and object lens are positioned at lathe top, and workpiece is positioned under the object lens.Reflected light path adopts direct bounce technique.Making the minimum resolution of detected image by subdivide technology is 0.001.
Applied Computer Techniques, the image that CCD is gathered carries out digitized processing, and the gross data in real data and the computer is analyzed comparison, draws error result, provides foundation for compensating automatically.In the process of workpiece, in real time workpiece is monitored, simultaneous computer utilization image processing software carries out Treatment Analysis to the image of its collection, workpiece actual samples image and theoretical image are compared, less than or when damaged (that is: cross line), illustrate that then emery wheel is worn, workpiece still has surplus, the notice control system compensates automatically, has realized the function of online accurate detection and online compensation.Use the CCD detection system, substitute the optical projection detection system, make the testing result quantification, having avoided the people is the deviation of distinguishing, has improved the accuracy of detection to workpiece.
The present invention adopts the open multiaxis Digitizing And Control Unit of collection image recognition technology.Its core is open, i.e. the interoperability between each module and the uniformity of man-machine interface and communication interface in the independence of each module of system and operation platform, the system.Make full use of the advantage of digital control system in open type, carry out multiaxis Digital Control and image recognition processing integrated.Can control eight axles at most, comprising seven servo electric rotating machines and a servo linear motor, can realize six-axis linkage at most, and can carry out different combinations Control Shaft.
Combination one: plane curve processing
X, Y be the interpolation axle each other, carries out the motion of workpiece machining locus;
C is a universal driving shaft, carries out the grinding approximation method to pursuit movement;
U, V are universal driving shaft, carry out the grinding compensate function;
Z is a universal driving shaft, carries out slide plate and pumps;
Combination two: rounding processing
X, Y be the interpolation axle each other, carries out the motion of workpiece machining locus;
C is a universal driving shaft, carries out the grinding approximation method to pursuit movement;
U, V are universal driving shaft, carry out the grinding compensate function;
A is a universal driving shaft, carries out workpiece and rotatablely moves.
Combination three: closed curve processing
X, Y be the interpolation axle each other, carries out the motion of workpiece machining locus;
C is a universal driving shaft, carries out the grinding approximation method to pursuit movement;
U, V are universal driving shaft, carry out the grinding compensate function;
Z is a universal driving shaft, carries out slide plate and pumps;
B is a Control Shaft, carries out vertical dividing head gyration.
Combination four: horizontal non-circle processing
Y, A be the interpolation axle each other, carries out the non-round track working motion of workpiece;
C is a universal driving shaft, carries out the grinding approximation method to pursuit movement;
U, V are universal driving shaft, carry out the grinding compensate function;
X is a universal driving shaft, carries out workpiece spindle to working motion.
Combination five: vertical non-circle processing
Y, B be the interpolation axle each other, carries out the non-round track working motion of workpiece;
C is a universal driving shaft, carries out the grinding approximation method to pursuit movement;
U, V are universal driving shaft, carry out the grinding compensate function;
Z is a universal driving shaft, carries out slide plate and pumps;
X is a Control Shaft, carries out the workpiece shift motion.
In multiaxis control, can discern processing to the image of CCD, and make the compensation requirement, realize the function of online detection and online compensation.This system can realize whole lathe is carried out remote monitoring and control by the network port on the industrial main frame.

Claims (3)

1. digital profile grinder, form by main and auxiliaries station two parts, described main frame is a full-closed structure, lathe bed (1) is gone up the right and is provided with multi-functional workbench (6), and the left side is provided with grinding carriage (3) and slide (2), and top is CCD checkout gear (4), electricity cabinet (9) is positioned at the main frame rear side, and be integral with host groups, it is characterized in that collection is by dust exhaust apparatus, cooling device, air balance and the control station and form one of braking on the described subsidiary engine station; Described multi-functional workbench (6) is made up of revolving bed (7), cross saddle (13), and wherein cross saddle (13) is positioned on the revolving bed (7) and with revolving bed (7) and fixedlys connected; Described grinding carriage (3) is made up of emery wheel support body shell (53), base (46), slide plate revolving bed (51) and reciprocal slide plate (47), and wherein base (46) is fixedly connected on the slide (2); Back and forth slide plate (47) is positioned at the front end of slide plate revolving bed (51), emery wheel carriage (49) is housed on the slide plate (47), slide plate (47) is built-in with balance cylinder (48) and pneumatic brake (54), be provided with between slide plate (47) and the slide plate revolving bed (51) and drive the linear servo-actuator (50) that slide plate (47) pumps, emery wheel body shell (53) inner slider revolving bed (51) is provided with worm couple (52); Described slide (2) is positioned under the grinding carriage (3), by descending planker (40), middle carriage (41) and going up planker (43) and form cross saddle, the longitudinal axis of slide (2) is the U axle, lateral shaft is the V axle, the feed mechanism that is provided with straight-line rolling guide set product (45) between following planker (40) and middle carriage (41), middle carriage (41) and the last planker (43) and is made up of servomotor (44), shaft coupling (42), ball screw assembly, (55).
2. digital profile grinder according to claim 1, it is characterized in that, revolving bed (7) in the described multi-functional workbench (6) is made up of revolution support (29), revolution planker (27), is provided with a revolution connecting axle (28) between revolution support (29) and revolution planker (27); Revolution is dragged to pull and the feed mechanism of being made up of servomotor (30), worm gear (31) is housed below (27).
3. digital profile grinder according to claim 1, it is characterized in that, cross saddle (13) in the described multi-functional workbench (6) is by following planker (20), middle carriage (22), goes up planker (24) and work top formation, and following planker (20) and middle carriage (22) lower guideway longitudinally X-direction are arranged; Middle carriage (22) upper rail and last planker (24) are arranged the feed mechanism that is provided with straight-line rolling guide set (23) between following planker (20) and middle carriage (22) and middle carriage (22) and the last planker (24) and is made up of servomotor (25), shaft coupling (26), ball screw assembly, (21) along horizontal Y direction.
CNB2005100249551A 2005-04-07 2005-04-07 Digital profile grinder CN100361783C (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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CN100361783C true CN100361783C (en) 2008-01-16

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