Scanning support table for reverse engineering
Technical field
The invention belongs to the reverse Engineering Technology field, specifically, particularly a kind of scanning support table for reverse engineering.
Background technique
Reverse Engineering Technology (Reverse Engineering, english abbreviation RE), also claim reverse engineering, reverse engineering etc., its thought is at first since the design process of plasticine model to the product material object, development subsequently forms one with advanced product, the material object of equipment, exemplar, software (comprises drawing, program, technical documentation etc.) or video (image, photo etc.) as research object, the application modern Design, production technology, materials science and relevant professional are carried out system analysis and research, explore and grasp its key technology, and then develop the technology of similar more product of the future.
When reverse Engineering Technology designs, need from design object, extract three-dimensional data information.At present, general way is: design object is placed on the fixed platform, carries out multi-angle scanning by manually moving the ATOS spatial digitizer, obtained the data information of scanning gained then by computer.The deficiency that aforesaid way exists is:
1, by manually moving spatial digitizer, need two staff to operate, big not as good as inconvenient operation, labor intensity, and the cost of labor height;
2, the angle of scanning relies on staff's experience to determine, causes easily and gets angle undue influence quality of scanning, and be difficult to obtain accurately best angle, can cause the repeatability of scanning measurement point taken, and then influence scan efficiency;
3,, adopt optical grating projection to measure, and cost an arm and a leg because spatial digitizer is a highly sophisticated device, moving easy its measuring accuracy, displacement amount and the light of influencing for a long time changes, can reduce the accuracy of scanning survey on the one hand, on the other hand, shorten the working life of spatial digitizer.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of scanning support table for reverse engineering of being convenient to operate, to improve the efficient and the accuracy of reverse-engineering scanning survey.
Technological scheme of the present invention is as follows: a kind of scanning support table for reverse engineering, comprise working platform, magnet, pawl dish, support and base, the central authorities of described working platform bottom surface are adsorbed with magnet, this magnet is connected with the upper end of pawl dish, the lower end of described pawl dish is by the top-supported of bearing and support, and the bottom and the base of this support fix.
Adopt above technological scheme, working platform bottom absorption magnet, utilize the magnetic force of magnet uniqueness, can directly be adsorbed on iron design object on the working platform, non-design object made of iron can dispose little iron block and locate on working platform, like this design object not can with working platform generation relative displacement, can guarantee that scanning survey is working properly carries out.Spatial digitizer is installed on the tripod that carries, with hand rotation work platform, under the effect of bearing, pawl dish, magnet can rotate relative to support and base together with working platform, thereby can carry out scanning survey by keeping spatial digitizer mode motionless and rotation work platform and design object.Simple, convenient on the one hand with upper type, only need a staff just, saved cost of labor greatly; On the other hand, working platform rotates flexibly, and the distance between working platform and the spatial digitizer is constant, helps getting angle, has improved the efficient and the accuracy of scanning survey.Simultaneously, spatial digitizer remains motionless, avoided because of move the measuring accuracy reduction that causes and displacement amount for a long time, light changes, and can guarantee the accuracy of scanning survey and the working life of spatial digitizer.
Described pawl dish has the disc disk body, and the middle part of this disk body end face extends upward, and forms convex platform, and described convex platform passes first via hole on the magnet, stretches in first locating slot of working platform bottom surface; Extend downwards at the middle part of described disk body bottom surface, forms lower convex platform, and this lower convex platform is by the top-supported of bearing and support.Above structure connects firm, easy accessibility, magnet when rotating not relatively working platform be subjected to displacement, guaranteed the synchronism of pawl dish, magnet and working platform running reliability good and that design object is located.
Be provided with by circumference at the end face of described disk body and be evenly distributed with post, each post is positioned at the periphery of convex platform, and post passes second via hole on the magnet, stretches in second locating slot of working platform bottom surface.Post and convex platform cooperate, and can in time drive the magnet running when the pawl dish rotates, and effectively avoid pawl dish and magnet to relatively rotate.
Described lower convex platform is up big and down small stepped shape round column structure, the reduced diameter section of this lower convex platform and bearing supporting, on the reduced diameter section of lower convex platform, overlap the disc brake dish admittedly, the disc brake that matches with this disc brake dish is supported by the connecting plate of support roof anchorage, and the disc brake line of drawing from disc brake is connected with the disc brake handle.Above structure is convenient to manufacturing on the one hand, helps the disc brake dish and installs; On the other hand, disc brake dish and disc brake cooperate, and play quick stop, can guarantee the accuracy of stop angle, can get best angle accurately, thereby reduce the repeatability of scanning measurement point taken, make scanning survey speed more quick.
Described working platform is a disc structure, is provided with graduation line on the circumferential surface of working platform; The top of described disc brake is equipped with pointer, and this pointer is " L " shape, and the crosspiece and the disc brake of pointer are fixed, the perpendicular section outside that is positioned at the working platform circumference of pointer.Said structure is simple and reliable, and processing and assembling are easily; And pointer cooperates with graduation line, can show the angle that working platform turns over intuitively, exactly, helps the staff and gets angle and improve the efficient of scanning.
Described disc brake handle is connected with first " U " shape journal stirrup on the base by torsion spring, presses the disc brake handle like this, and the disc brake handle passes through the disc brake tape and moves disc brake, and the disc brake dish is stopped operating; Unclamp the disc brake handle, under the effect of torsion spring, each parts resets, and operation is not only convenient but also reliable.
For simplified structure, make easy accessibility, quick, and provide firm support force, described support to comprise middle backplate, dunnage and first strut, wherein in the central pressing bearing of backplate, and the end face of middle backplate fixes by bolt and connecting plate; Described dunnage is " door " shape, two short erection columns of this dunnage bottom are connected with second " U " shape journal stirrup on the base by bolt, the long erection column on dunnage top is between two short bearings of middle backplate one end, and connect by bolt, the other end at middle backplate has the seat of drawing money on credit, this seat of drawing money on credit is positioned between the upper end erection column of two first struts, the three connects by same bolt, and the lower end erection column of two first struts respectively is connected with the 3rd " U " shape journal stirrup on the base by a bolt.
For fixing and the stability that improves support, between two first struts, be provided with second strut, the upper end erection column of this second strut is connected with interior journal stirrup on the dunnage by bolt, and the lower end erection column of second strut is connected with the 4th " U " shape journal stirrup on the base by bolt.
The invention has the beneficial effects as follows:
1, need not manually to move spatial digitizer, as long as a staff just can operate, simple, convenient, labor intensity is little, and cost of labor is low;
2, the working platform rotation is flexible, stop is reliable, can get best angle accurately, has reduced the repeatability of scanning measurement point taken, makes scanning survey speed more quick, and the result is more accurate.
3, spatial digitizer remain motionless, avoided because of move the measuring accuracy reduction that causes and displacement amount for a long time, light changes, and can guarantee the accuracy of scanning survey and the working life of spatial digitizer.
4, compact structure, dismounting is quick, easy, and processing technology is simple, and is easy to maintenance.
Description of drawings
Fig. 1 is a stereogram of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a plan view of the present invention.
Fig. 4 is the A-A sectional view of Fig. 3.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the present invention is made of working platform 1, magnet 2, pawl dish 3, bearing 4, base 5, disc brake dish 6, disc brake 7, connecting plate 8, disc brake line 9, disc brake handle 10, pointer 11, torsion spring 12, middle backplate 13, dunnage 14, first strut 15 and second strut 16, wherein working platform 1 is iron disc structure, is distributed with graduation line on the circumferential surface of working platform 1.The central authorities of described working platform 1 bottom surface are adsorbed with magnet 2, and this magnet 2 is the roundel structure.Pawl dish 3 is set below magnet 2, this pawl dish 3 has disc disk body 3a, the size of disk body 3a is suitable with magnet 2, and the middle part of disk body 3a end face extends upward, form column convex platform 3b, this convex platform 3b passes first via hole on the magnet 2, stretches in first locating slot of working platform 1 bottom surface.Be provided with at the end face of described disk body 3a and a plurality ofly be evenly distributed with post 3c by circumference, post 3c is preferably 5 in the present embodiment, each post 3c is positioned at the periphery of convex platform 3b, and post 3c passes second via hole on the magnet 2, stretches in second locating slot of working platform 1 bottom surface.Extend downwards at the middle part of described disk body 3a bottom surface, forms lower convex platform 3d, and this lower convex platform 3d is up big and down small stepped shape round column structure, and the axis of lower convex platform 3d, disk body 3a, convex platform 3b, magnet 2 and working platform 1 each several part is on same straight line.
From Fig. 1, Fig. 2, Fig. 3 and Fig. 4 as can be known, bearing 4 supportings that press-fit by middle backplate 13 central authorities of the reduced diameter section of lower convex platform 3d.Admittedly overlap disc brake dish 6 on the reduced diameter section of lower convex platform 3d, this disc brake dish 6 is arranged in the top of backplate 13, and the disc brake 7 that matches with this disc brake dish 6 is supported by connecting plate 8, and connecting plate 8 fixes by the end face of bolt and middle backplate 13.The top of described disc brake 7 is equipped with pointer 11, and this pointer 11 is " L " shape, and the crosspiece of pointer 11 and disc brake 7 are fixing, the perpendicular section outside that is positioned at working platform 1 circumference of pointer 11.The disc brake line 9 of drawing from disc brake 7 and disc brake handle 10 is connected, and this disc brake handle 10 passes through torsion spring 12 and is connected with first " U " shape journal stirrup 5a on the base 5.Described disc brake dish 6, disc brake 7, disc brake line 9 and disc brake handle 10 are members of existing disc brake mechanism on the motorcycle, and its working principle is not done at this and given unnecessary details.
From Fig. 1, Fig. 2, Fig. 3 and Fig. 4 also as can be known, dunnage 14 is arranged in a side of backplate 13 belows, and two first struts 15 that are arranged in parallel are arranged in the opposite side of backplate 13 belows.Described dunnage 14 is " door " shape, two short erection column 14a of these dunnage 14 bottoms are connected with second " U " shape journal stirrup 5b on the base 5 by bolt, the long erection column 14b on dunnage 14 tops is between two short bearing 13a of middle backplate 13 1 ends, and connect by bolt, the other end at middle backplate 13 has a 13b that draws money on credit, this draws money on credit a 13b between the erection column of the upper end of two first struts 15, the three connects by same bolt, and the lower end erection column of two first struts 15 respectively is connected with the 3rd " U " shape journal stirrup 5c on the base 5 by a bolt.Between two first struts 15, be provided with second strut 16, the upper end erection column of this second strut 16 is connected with interior journal stirrup 14c on the dunnage 14 by bolt, and the lower end erection column of second strut 16 is connected with the 4th " U " shape journal stirrup 5d on the base 5 by bolt.
Working principle of the present invention is as follows:
Utilize the magnetic force of magnet 2 uniquenesses, iron design object (present embodiment is a motor, among Fig. 1 shown in the two-dot chain line) directly can be adsorbed on the working platform 1, non-design object made of iron can dispose little iron block and locate on working platform 1.Spatial digitizer (not drawing among the figure) is installed on the tripod that carries, with hand rotation work platform 1, under the effect of bearing 4, pawl dish 3, disc brake dish 6, magnet 2 together with working platform 1 can relative in backplate 13 and disc brake 7 rotate, press disc brake handle 10, disc brake handle 10 drives disc brake 7 by disc brake line 9, and disc brake dish 6 is stopped operating; The angle that turned over by pointer 11 indication working platformes this moment, and carry out scanning survey work under this angle by spatial digitizer.Unclamp disc brake handle 10, under the effect of torsion spring 12, disc brake handle 10, disc brake 7 reset, and working platform 1 is rotatable again together with disc brake dish 6, can carry out the scanning survey work of next angle.