A kind of rotary cutting punch
Technical field
The present invention relates to a kind of rotary cutting punch, relate in particular to a kind of improve rotary-cutting die stability, for the positioner of rotary cutting punch inner core, belong to Machining Technology field.
Background technology
Along with scientific and technological high speed development, hardware stamping part is increasingly extensive in the application of industry-by-industry, also more and more stricter to the quality of product and dimensional requirement.The conventional machining process of some products can not meet the demands.Wherein five metals drawn products is particularly outstanding, tensioning member in drawing process, due to the anisotropy of material, the reason such as in uneven thickness and location is inaccurate or Drawing Die gap is inhomogeneous, the workpiece top that makes to pull out is irregular.For end, require part concordant, attractive in appearance just to need the rotary-cutting die that machining accuracy is higher to complete.
Rotary cutting punch is important turn-cutting die part, as shown in Figure 1.During rotary-cutting die work, downward when punch press, during rotary-cut, locating element as shown in Figure 2 can be pulled by rotary-cut die in product the inside.When rotary-cut finishes, when mould separates, locating element also needs to reset to the position of rotary-cut punch.
Locating element is formed in one, and its 11 cross sections, one end that enter product are square shape, and the other end 12 is welded on rotary cutting punch body, and such structure is difficult to moulding, manufacturing process trouble.If have small-sized product needed with in rotary cutting process place, locating element also needs corresponding diminishing as requested.If but locating element is when too small, can't stand that owing to holding rotary-cut brings its pulling force, easily ruptures or causes to reset and carry out the rotary-cut of next product, causes operating efficiency low.Meanwhile, because it is directly welded on rotary cutting punch body, need to change whole rotary cutting punch after fracture, cost strengthens.
Summary of the invention
The object of the invention is to solve above-mentioned technical problem, propose a kind of being easy to and change and the high rotary cutting punch of rotary-cut stability.
Object of the present invention, will be achieved by the following technical programs:
A kind of rotary cutting punch, comprise rotary cutting punch body, in described rotary cutting punch body, be fixed with locating element, described locating element is comprised of three parts, first is locating element body, one end of described locating element body is round platform portion for guiding, and the bottom surface of described round platform portion is connected with locating element body, and the bottom surface diameter of described round platform portion is less than the end face diameter of round platform portion;
The second portion of described locating element is location division, and described location division is socketed in the round platform portion of described locating element body;
The third part of described locating element is fixed part, and described locating element body is arranged in rotary cutting punch by fixed part.
Preferably, offer a through hole on described location division, described through hole is comprised of the first hole and second hole two parts, and the shape in described the first hole is suitable with described round platform portion shape, and the shape in described the second hole is suitable with locating element body shape.
Preferably, described locating element body is welded to connect in rotary cutting punch by fixed part.
Beneficial effect of the present invention is mainly reflected in: when rotary-cut part is very little, also can well locates and reach the stable object of rotary-cut, reduce the fracture of locating element.Because locating element body is welded on rotary cutting punch by fixed block, even if the fracture of locating element body only need to be changed fixed block and locating element body, do not need, by the whole replacement of rotary cutting punch, to have reduced cost.
Accompanying drawing explanation
Fig. 1 is the rotary cutting punch structural representation of prior art.
Fig. 2 is the locating element structural representation of Fig. 1.
Fig. 3 is rotary cutting punch structural representation of the present invention.
The structural representation of Tu4Shi Tu3 locating element first.
Fig. 5 is Fig. 3 locating element second portion structural representation.
The specific embodiment
The invention provides a kind of rotary cutting punch, as shown in Figure 3, comprise rotary cutting punch body, in described rotary cutting punch body, be fixed with locating element.
Described locating element is comprised of three parts: first is locating element body 1, and as shown in Figure 4, one end of described locating element body 1 is the round platform portion 11 for guiding.The bottom surface of described round platform portion 11 is connected with locating element body 1, and the bottom surface diameter of described round platform portion 11 is less than the end face diameter of round platform portion 11.Such structure makes with the location division 2 of part fixing better, makes localization part better enter into the product for the treatment of rotary-cut.
The second portion of described locating element is location division 2, and as shown in Figure 5, described location division 2 is socketed in the round platform portion 11 of described locating element body 1.Concrete, on described location division 2, offer a through hole, described through hole is comprised of the first hole 21 and second hole 22 two parts, and the shape in described the first hole 21 is suitable with described round platform portion 11 shapes, and the shape in described the second hole 22 is suitable with locating element body 1 shape.In order to make locating element body 1 have mobile space in rotary cutting punch, the diameter of described locating element body 1 is less than rotary cutting punch hole.
Meanwhile, for the round platform portion 11 of locating element body 1 can stretch into smoothly product and can reach the object of rotary-cut, the through hole of described second portion is slightly larger than round platform portion 11.
In order better to control the reset of locating element body 1 and fixing effect, described locating element adopts the good material of toughness, and the third part of described locating element is fixed part 3, described locating element body 1 is fixed in rotary cutting punch by the welding of fixed part 3.If locating element fracture when rotary-cut, can pass through to change fixed part 3, and without whole rotary cutting punch is changed, reduce costs.
When rotary-cut part is very little, also can well locate and reach the stable object of rotary-cut, reduced the fracture of locating element.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming, within all dropping on protection scope of the present invention.