A kind of manual adjustable tension tensioning mechanism
Technical field
The utility model relates to a kind of electric spark linear cutting machine, particularly relates to a kind of wire electrode tension tensioning mechanism.
Background technology
Growth along with process time, the diameter of wire electrode will attenuate because of galvanic action, length also can be elongated, during cutting, wire electrode can be shaken because of lax, so that the surface to be machined Quality Down, roughness increases, the shake of wire electrode also can cause the generation of short circuit phenomenon, causes the cutting pause or blows wire electrode, greatly reduces operating efficiency.
The effect of impact discharge processing in order to reduce the kind electrode silk to relax, the mode of employing is many at present, and comparatively general mode has Weight type, spring, reversible moment electric motor type.All aforesaid ways without exception be that tensioning mechanism all forms the loop with wire-moving system, participate in the cutting process, exist following defective.
One, Weight type is subjected to spatial limitation installing, and weight produces self-oscillation when the silk bucket moves, and feeds back in the system, the stability of impact cutting;
Two, spring tensile force adjustable range is little, and the wire electrode regulated quantity is little, and tensile force is even not;
Three, electric motor type complex structure, cost is high, runs into unexpected power failure and can destroy whole tension state.
Summary of the invention
The technical problem that the utility model mainly solves provides a kind of manual adjustable tension tensioning mechanism, and its project organization is simple and practical, and is easy to make, safe and reliable, uses flexibly.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of manual adjustable tension tensioning mechanism is provided, this manual adjustable tension tensioning mechanism comprises silk cylinder, wire electrode, upper block, lower tumbler, workbench, crossbeam, tight silk device, one end of described wire electrode is wrapped in the silk cylinder upward and is fixed in a silk cylinder left end, the other end of wire electrode is successively through being wrapped in the silk cylinder upward and being fixed in silk cylinder right-hand member behind upper block, tight silk device and the lower tumbler, tight silk device is installed on crossbeam, and crossbeam is installed on workbench; Described tight silk device comprises tight silk guide wheel, fork, fork connecting pin, support and weight, one end of described fork is provided with rotatable tight silk guide wheel, the position that fork is close to a guide wheel is movably connected on support by the fork connecting pin, support is installed on crossbeam by screw, the other end of fork is installed with movably weight, side end by weight on the fork is provided with stop screw, is provided with the moment scale by the weight side on the fork.
Preferably, described tight silk device is screwed on the crossbeam.
Preferably, lean on the outer end of a side of weight to be provided with stop screw on the described fork, leaning on the weight side on the fork is the moment scale.
The beneficial effects of the utility model are: a kind of manual adjustable tension tensioning mechanism of the utility model, only when tight silk with wire-moving system composition loop, do not affect machine cut stability in the cutting process; Its project organization is simple and practical, and is easy to make, safe and reliable, uses flexibly, realized the tensile force of electrode wire of wire-cutting machine tools is regulated, and effectively guarantees the quality of processing, enhances productivity.
Description of drawings
Fig. 1 is the structural representation of a preferred embodiment of a kind of manual adjustable tension tensioning mechanism of the utility model;
Fig. 2 is the tight silk device partial enlarged drawing of a kind of manual adjustable tension tensioning mechanism of the utility model.
The specific embodiment
Preferred embodiment is described in detail to the utility model below in conjunction with accompanying drawing, thereby so that the advantage of utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
See also Fig. 1 and Fig. 2, the utility model embodiment comprises:
A kind of manual adjustable tension tensioning mechanism, this manual adjustable tension tensioning mechanism comprises silk cylinder 1, wire electrode 18, upper block 7, lower tumbler 10, workbench 5, crossbeam 4, tight silk device 19, one end of described wire electrode 18 is wrapped on the silk cylinder 1 and is fixed in silk cylinder 1 left end, the other end of wire electrode 18 is successively through being wrapped on the silk cylinder 1 and being fixed in silk cylinder 1 right-hand member behind upper block 7, tight silk device 19 and the lower tumbler 10, tight silk device 19 is installed on crossbeam 4, and crossbeam 4 is installed on workbench 5; Described tight silk device 19 comprises tight silk guide wheel 8, fork 11, fork connecting pin 16, support 17 and weight 12, one end of described fork 11 is provided with rotatable tight silk guide wheel 8, the position that fork 11 is close to a guide wheel 8 is movably connected on support 17 by fork connecting pin 16, support 17 is installed on crossbeam 4 by screw, the other end of fork 11 is installed with movably weight 12, and the side end by weight 12 on the fork 11 is provided with stop screw 13; Described weight 12 is provided with fixed screw 14; Be provided with moment scale 15 by the weight side on the described fork 11; One end of described silk cylinder 1 is provided with handwheel 6.
Concrete operation step is: at first shake silk cylinder handwheel 6, wire electrode is shaken silk cylinder high order end, tight silk device 19 is installed on the workbench crossbeam 4, adjust workbench 5 positions, make tight silk guide wheel 8 be positioned at the same vertical plane of upper block 7 and lower tumbler 10 compositions, tension wire electrode 18, mobile weight 12 is to appropriate zmp position, screw 14(stop screw 13 effects that are locked are to prevent that weight from skidding off fork when screw 14 is not locked), and adjust workbench 5 position holding torque scales 15 and substantially be in level, guarantee that the tensile force of silk is constant.Shake silk cylinder handwheel 6, wire electrode moves to silk cylinder right-hand member gradually, under weight 12 effects, wire electrode 18 is tightened up, and therebetween, wire electrode 18 adjustment amounts increase, weight 12 can be sagging, needs travelling table 5, allows moment scale 15 maintenance levels, until silk cylinder right-hand member unclamps silk cylinder right-hand member hold-down screw 3, eliminate the wire electrode adjustment amount, again lock this screw, finish the adjusting of the tensile force of wire electrode, thereby effectively improve machining accuracy, improve the surface roughness of processing parts.
A kind of manual adjustable tension tensioning mechanism of the utility model, its project organization is simple and practical, easy to make, install reliable, use flexibly, by the tension adjustment to the line cutting electrode silk, avoid the loss that causes because of the lax shake of wire electrode, improve the surface roughness of cut workpiece, improved production efficiency.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.