A kind of Work piece processing method using pattern control system
Technical field
The present invention relates to the machining field of workpiece, especially a kind of master form mechanism.
Background technology
Copying be with ready-made pattern for foundation, add man-hour under certain pressure effect, contact and pattern working surface close contact, and it is mobile along its surface, by feeler mechanism, make cutter do synchronized profile modeling action, thus on part blank, process the part of profile identical with pattern.Copying carries out one of important method of machining to the die cavity of various part, particularly mould parts or profile.Conventional copying has contour turning, profile milling, copying planing and profile copy grinding etc.
But copying has shortcoming.Its machining shape for workpiece often depends on the shape of its profiling mould.And for the larger workpiece of flexibility, because its amount of having changes greatly, the curvature of shape is comparatively large, the profiling shape of pattern is only relied on to be the crudy being difficult to reach needs.
Summary of the invention
The object of this invention is to provide a kind of scheme of copying, it can meet the shape processing needs of deep camber, workpiece that bending change is larger, simultaneously without the need to changing lathe or whole pattern assembly.
According to the present invention, a kind of Work piece processing method using pattern control system, described pattern control system comprises master form mechanism and control device, described master form mechanism comprises: casing, movable master plate and movable master plate drive unit, described overall case is rectangular shape, there is internal cavities and cannelure, movable master plate and movable master plate drive unit are arranged in described internal cavities, described cannelure is arranged on the upper surface place of described casing, the top edge of movable master plate is process profiling profile eventually, movable master plate drive unit can be driven described movable master plate thus make its profiling profile be stretched out in the upper surface of casing by described cannelure, wherein, described cannelure on the upper surface along the longitudinal the longitudinal direction of groove there is longitudinally convex lip, longitudinally the top edge of convex lip is preliminary working profiling profile, when movable master plate drive unit drives described movable master plate thus when making its profiling profile stretch out in the upper surface of casing by described cannelure, the preliminary working profiling profile that the distance that the described profiling of processing eventually profile stretches out in described upper surface exceedes longitudinally convex lip stretches out in the distance of described upper surface, drive described movable master plate when movable master plate drive unit thus when its profiling profile is fallen back in described cannelure, process profiling profile whole-body described end and be positioned under the preliminary working profiling profile of longitudinally convex lip,
Be provided with left limit lug and right limit lug to the bilateral symmetry of described movable master plate, the left surface of left limit lug and the right flank of right limit lug can contact cooperation slidably with the medial surface of described internal cavities respectively, and the left surface that described movable master plate is positioned at above described spacing lug can contact cooperation with the left side of described cannelure with right side respectively slidably with right flank, thus, to the slide-and-guide of movable master plate; Described casing is respectively left limit wall and right limit wall in the left and right sides of described cannelure, left limit wall and right limit wall energy contact with the upper surface of right limit lug with left limit lug enough respectively and coordinate, thus play the effect spacing to the Top Runby of movable master plate;
The nut apparatus that described movable master plate drive unit comprises drive motors, screw rod and coordinates with screw rod, drive motors can drive nut device, the bottom of screw rod coordinates with nut apparatus, and upper end is fixedly connected with pallet, and pallet is fixedly connected with the lower surface of movable master plate;
Described preliminary working profiling profile, for controlling cutter, carries out preliminary working to workpiece; The described profiling of processing eventually profile, for controlling cutter, carries out whole processing to workpiece;
Described control device comprises controller and position sensor, described position sensor is used for the distance from bottom of detected activity master plate lower surface and casing, described controller can receive the position signalling of described sensor, and drive motors motion can be controlled, and the motion of delivering gear can be controlled, delivering gear can control cutter along described master form mechanism lengthwise movement;
Described method comprises and in turn including the following steps:
A controller controls the motion of described drive motors, makes movable master plate drop to low level, thus the preliminary working profiling profile of the top edge of longitudinally convex lip is exposed;
Controller described in B controls delivering gear, makes cutter along the walking of preliminary working profiling profile, carries out preliminary working to workpiece:
After C preliminary working completes, change cutter, and controller controls the motion of described drive motors, makes movable master plate increase, thus processing profiling profile is eventually exposed;
Controller described in D controls delivering gear, makes cutter along processing profiling profile walking eventually, carries out whole processing to workpiece.
Pass through such scheme, due to twice pattern-preliminary working and whole processing pattern are all integrated in same pattern assembly, therefore, without the need to changing whole pattern assembly or changing lathe, meanwhile, for the pattern shape of two passages in the process that preliminary working and accurately machined different passage are processed, due in the process of processing, for workpiece, especially turner, the surface profile of its zanjon shape is comparatively severe for the force-bearing situation of cutter; Two kinds of patterns, by the pattern of use two passage, are combined on a pattern assembly, by automatically controlling this pattern assembly, can carry out separate machined, and process at one time for other structures the structure of this zanjon shape by the present invention; Like this, avoid the severe situation that cutter is stressed, and shorten process time as best one can.
Accompanying drawing explanation
Fig. 1 is the structural representation of master form mechanism of the present invention, and it corresponds to the preliminary working of the first passage, and now movable pattern falls;
Fig. 2 be the master form mechanism of Fig. 1 in other passage, i.e. the structural representation of the processing at end of the second passage, now movable pattern rises;
Fig. 3 is preliminary working profiling profile and the curve relation figure processing profiling profile eventually; In the drawings, the lengthwise position of two profiling profiles is corresponding consistent;
After Fig. 4 represents preliminary working, the schematic shapes of the processing work corresponding with preliminary working profiling profile;
After Fig. 5 represents processing eventually, with the schematic shapes processing the corresponding processing work of profiling profile eventually; And
Fig. 6 is the structure chart of control system.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-6, the present invention is described in detail.
A kind of Work piece processing method using pattern control system, described pattern control system comprises master form mechanism and control device 8, described master form mechanism comprises: casing 1, movable master plate 2 and movable master plate drive unit 4, described casing 1 is totally rectangular shape, there is internal cavities 14 and cannelure 13, movable master plate 2 and movable master plate drive unit 4 are arranged in described internal cavities 14, described cannelure 13 is arranged on the upper surface place of described casing 1, the top edge of movable master plate 2 is process profiling profile 12 eventually, movable master plate drive unit 4 can drive described movable master plate 2 thus make its profiling profile 12 stretch out in the upper surface of casing 1 by described cannelure 13, wherein, described cannelure 13 on the upper surface along the longitudinal the longitudinal direction of groove 13 there is longitudinally convex lip, longitudinally the top edge of convex lip is preliminary working profiling profile 11, when movable master plate drive unit 4 drives described movable master plate 2 thus makes its profiling profile 12 stretch out in the upper surface of casing 1 by described cannelure 13, the preliminary working profiling profile 11 that the distance that described eventually processing profiling profile 12 stretches out in described upper surface exceedes longitudinally convex lip stretches out in the distance of described upper surface, when movable master plate drive unit 4 drives described movable master plate 2 thus makes its profiling profile 12 fall back in described cannelure 13, the described profiling of processing eventually profile 12 entirety is positioned under the preliminary working profiling profile 11 of longitudinally convex lip,
Be provided with left limit lug and right limit lug to the bilateral symmetry of described movable master plate 2, the left surface 291 of left limit lug and the right flank 281 of right limit lug can contact cooperation slidably with the medial surface of described internal cavities respectively, and the left surface 293 that described movable master plate 2 is positioned at above described spacing lug can contact cooperation with the left side of described cannelure 13 with right side respectively slidably with right flank 283, thus, to the slide-and-guide of movable master plate 2; Described casing 1 is respectively left limit wall 18 and right limit wall 15 in the left and right sides of described cannelure 13, left limit wall 18 can contact with the upper surface of right limit lug with left limit lug respectively with right limit wall 15 and coordinate, thus plays the effect spacing to the Top Runby of movable master plate 2;
The nut apparatus 42 that described movable master plate drive unit 4 comprises drive motors 41, screw rod 44 and coordinates with screw rod 44, drive motors 41 can drive nut device 42, the bottom of screw rod 44 coordinates with nut apparatus 42, upper end is fixedly connected with pallet 43, and pallet 43 is fixedly connected with the lower surface of movable master plate 2;
Described preliminary working profiling profile 11, for controlling cutter, carries out preliminary working to workpiece; The described profiling of processing eventually profile 12, for controlling cutter, carries out whole processing to workpiece;
Described control device 8 comprises controller 81 and position sensor 84, described position sensor 84 is for the distance from bottom of detected activity master plate 2 lower surface and casing 1, described controller 81 can receive the position signalling of described sensor, and drive motors 41 can be controlled move, and the motion of delivering gear 84 can be controlled, delivering gear 84 can control cutter along described master form mechanism lengthwise movement;
Described method comprises and in turn including the following steps:
A controller 81 controls described drive motors 41 and moves, and makes movable master plate 2 drop to low level, thus the preliminary working profiling profile 11 of the top edge of longitudinally convex lip is exposed;
Described in B, controller 81 controls delivering gear 84, cutter is walked along preliminary working profiling profile 11, carries out preliminary working to workpiece:
After C preliminary working completes, change cutter, and controller 81 controls described drive motors 41 moves, make movable master plate 2 increase, thus processing profiling profile 12 is eventually exposed;
Described in D, controller 81 controls delivering gear, cutter being walked along processing profiling profile 11 eventually, carrying out whole processing to workpiece.
2. the method for claim 1; wherein, described master form mechanism turning shaft parts, preliminary working profiling profile 11 controls first amount of feeding of lathe tool when the first passage processing; the described profiling of processing eventually profile 12 controls the residue amount of feeding of lathe tool when the second passage processing
The contour shape of described preliminary working profiling profile 11 and eventually processing profiling profile 12 meets following condition:
First the lowest point part D1 of preliminary working profiling profile 11 obtains the first projection T1 on workpiece after processing, second the lowest point part D2 of processing profiling profile 12 corresponding position in a longitudinal direction obtains the second projection T2 on workpiece after processing eventually, and described first projection T1 is identical with the diameter dimension essence of the second projection T2;
Processing profiling profile 12 has the second paddy peak part P2 eventually, preliminary working profiling profile 11 corresponding position is in a longitudinal direction provided with the first outwardly paddy peak part P1, the outwardly degree of the first paddy peak part P1 is less than the protrusion degree of the second paddy peak part P2, that is: the first distance C1 of the paddy peak part P1 to the first datum line B1 of preliminary working profiling profile 11 is less than the second distance C2 of the paddy peak part P2 to the second datum line B2 of processing profiling profile 12 eventually, described first datum line B1 is the straight line of part D1 place, the lowest point through preliminary working profiling profile 11 and workpiece longitudinal axis parallel, described second datum line B2 is the straight line through the corresponding part D2 place, the lowest point of the lengthwise position of whole processing profiling profile 12 and workpiece longitudinal axis parallel, further, the curvature of curve of the first paddy peak part P1 is less than the curvature of curve of the second paddy peak part P2.
Alternatively, described position sensor is hall position sensor.