A kind of lathe with pattern
Technical field
The utility model relates to the machining field of workpiece, especially a kind of profiling machine.
Background technology
Copying is to take ready-made pattern as foundation, adds man-hour under certain pressure effect, contact and pattern working surface close contact, and mobile along its surface, by feeler mechanism, make cutter do synchronized profile modeling action, thereby on part blank, process the part with the identical profile of pattern.Copying is that the die cavity of various parts, particularly mould parts or profile are carried out to one of important method of machining.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 bite changes greatly, the curvature of shape is larger, the profiling shape that only relies on pattern is the crudy that is difficult to reach needs.
Utility model content
The purpose of this utility model is to provide a kind of lathe of copying, and it can meet the shape processing needs of deep camber, workpiece that bending change is larger, simultaneously without changing lathe or whole pattern assembly.
According to the utility model, a kind of lathe with pattern, comprise lathe bed, the head of a bed, tailstock, the master form mechanism of double outline, and cutter, the master form mechanism of described double outline is arranged on lathe bed, piece-holder is between the head of a bed and tailstock, cutter can move along the master form mechanism of described double outline, the master form mechanism of described double outline comprises: casing, movable master plate and movable master plate drive unit, described casing is totally 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 to process eventually profiling profile, thereby movable master plate drive unit can drive described movable master plate to make its profiling profile by described cannelure, stretch out in the upper surface of casing, wherein, described cannelure on described upper surface along the longitudinal the longitudinal direction of groove there is longitudinal protruding lip, the top edge of longitudinal protruding lip is preliminary working profiling profile, when thereby movable master plate drive unit drives described movable master plate to make its profiling profile stretch out in the upper surface of casing by described cannelure, the distance that the described profiling of processing eventually profile stretches out in described upper surface stretches out in the distance of described upper surface over the preliminary working profiling profile of longitudinal protruding lip, when thereby movable master plate drive unit drives described movable master plate to make its profiling profile fall back in described cannelure, the described profiling of processing eventually profile integral body is positioned under the preliminary working profiling profile of longitudinal protruding lip,
Be provided with to the bilateral symmetry of described movable master plate left limit lug and right limit lug, the right flank of the left surface of left limit lug and 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 described spacing lug top can contact cooperation with the left side of described cannelure with right side respectively slidably with right flank, thus, the slide-and-guide to 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 contacts cooperation with the upper surface of left limit lug and right limit lug enough respectively with right limit wall energy, thereby plays the effect spacing to the Top Runby of movable master plate;
Described movable master plate drive unit comprises drive motors, screw rod and the nut apparatus coordinating 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 is used for controlling cutter, and workpiece is carried out to preliminary working; The described profiling of processing eventually profile is used for controlling cutter, and workpiece is carried out to whole processing.
Pass through such scheme, due to twice pattern-preliminary working and whole processing pattern are all integrated in same pattern assembly, therefore, in the process of preliminary working and the processing of accurately machined different passage without changing whole pattern assembly or changing lathe, meanwhile, for the pattern shape of two passages, in the process in processing, for workpiece, turner especially, the surface profile of its zanjon shape is comparatively severe for the force-bearing situation of cutter; The utility model, by using the pattern of two passages, is combined in two kinds of patterns on a pattern assembly, by automation control this pattern assembly, can carry out separate machined to the structure of this zanjon shape, and process at one time for other structures; Like this, avoided the stressed severe situation of cutter, and shortened process time as best one can.
Accompanying drawing explanation
Fig. 1 is the structural representation of master form mechanism of the present utility model, and it is corresponding 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 processing eventually of the second passage, now movable pattern rises;
Fig. 3 is preliminary working profiling profile and the curve relation figure of processing eventually profiling profile; In the drawings, the lengthwise position of two profiling profiles is corresponding consistent;
Fig. 4 represents after preliminary working, the shape schematic diagram of the processing work corresponding with preliminary working profiling profile;
Fig. 5 represents after processing eventually, the shape schematic diagram of the processing work corresponding with whole processing profiling profile.
The specific embodiment
Below in conjunction with accompanying drawing 1-5, the utility model is elaborated.
A kind of lathe with pattern, comprise lathe bed, the head of a bed, tailstock, the master form mechanism of double outline, and cutter, the master form mechanism of described double outline is arranged on lathe bed, piece-holder is between the head of a bed and tailstock, cutter can move along the master form mechanism of described double outline, the master form mechanism of described double outline 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 to process eventually profiling profile 12, thereby movable master plate drive unit 4 can drive described movable master plate 2 to make its profiling profile 12 by described cannelure 13, stretch out in the upper surface of casing 1, wherein, described cannelure 13 on described upper surface along the longitudinal the longitudinal direction of groove 13 there is longitudinal protruding lip, the top edge of longitudinal protruding lip is preliminary working profiling profile 11, when thereby movable master plate drive unit 4 drives described movable master plate 2 to make its profiling profile 12 stretch out in the upper surface of casing 1 by described cannelure 13, the distance that the described profiling of processing eventually profile 12 stretches out in described upper surface stretches out in the distance of described upper surface over the preliminary working profiling profile 11 of longitudinal protruding lip, when thereby movable master plate drive unit 4 drives described movable master plate 2 to make its profiling profile 12 fall back in described cannelure 13, the described profiling of processing eventually profile 12 integral body are positioned under the preliminary working profiling profile 11 of longitudinal protruding lip,
Be provided with to the bilateral symmetry of described movable master plate 2 left limit lug and right limit lug, 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 described spacing lug top can contact cooperation with the left side of described cannelure 13 with right side respectively slidably with right flank 283, thus, the slide-and-guide to 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 cooperation with the upper surface of left limit lug and right limit lug respectively with right limit wall 15, thereby plays the effect spacing to the Top Runby of movable master plate 2;
Described movable master plate drive unit 4 comprises drive motors 41, screw rod 44 and the nut apparatus 42 coordinating 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.