CN205464126U - Bell shell finish forge ditch shrinkage of modified footpath mould - Google Patents

Abstract

The utility model discloses a press metal flow shaping law, adoption warm forging and cold forging jointly forge the bell shell finish forge ditch shrinkage of modified footpath mould of plasticity form -ing technology forging, relate to the mould field. (1)The utility model comprises a base (1) trimming punch with drift main part structure as an organic whole, trimming punch upper end uniformly split is six lamellas, and wherein the cut groove degree of depth is the 12 -56 of the whole height of trimming punch. The utility model has the advantages of as follows: because the trimming punch is integrative, so the rigidity is better than the components of a whole that can function independently, after the plug pushed up operating position, the drift can not the warpage, and tightly the plug is lived to the parcel, in the working process, the skew can not take place for six lamellas of drift, and the position degree is relatively good to after guaranteeing that the finishing is accomplished, six channel evenly distributed of inner chamber, inner chamber channel diameter is controlled easily, can the arbitrary adjustable length of in certain extent the size, mould processing degree of difficulty score body structure is low, and the precision is guaranteed more easily, the mould assembly is simple and convenient, easy to operate and adjustment.

Description

A kind of clutch can finish forge ditch cold reducing mould of improvement

Technical field

This utility model relates to a kind of mould, especially relates to a kind of by metal flowing forming rule Rule, uses the clutch can finish forge of the improvement of warm forging and cold forging combined forging plastic forming technology forging Ditch cold reducing mould.

Background technology

Clutch can fine forge piece belongs to a glass bar class automobile forging, and its cup portion planform is extremely complex, Surface of internal cavity is spherical, globally radially has the ball-track of six deciles, in order to six Steel ball coordinates the driving torque that transmission automobile is powerful, this outer spherical surface and the centre of sphere of ball-track Also has certain eccentric distance.Due to automobile in motion, clutch can raceway and the cooperation of steel ball Precision is directly connected to stationarity and the ruggedness of running car, and therefore its dimension precision requirement is very Height, after having forged, surface of internal cavity only leaves the small stock removal of 0.2mm～0.3mm.Tool Body structure is the schematic diagram of certain clutch can finish forge ditch as shown in Figure 1-2.

Because the inner chamber of clutch can is spherical, it is contemplated that in forging process, the demoulding of drift is asked Topic, so forging process is broadly divided into warm forging and two parts of cold reducing, due to forging inner chamber Dimensional requirement is higher, thus when design, the precision of cold reducing drift to be improved, also Warm forging to be fully taken into account and the matching problem of cold reducing drift, somewhat appearance point mistake, just It is easy to make size exceed the margin of tolerance, or the phenomenon that shaping is not in place occurs, so that waste product Generation.

As illustrated in figures 4-5, it is at profile and endoporus all machines to the cold reducing drift of prior art Adding after putting in place, uniform line cuts into six lobes.A base is also had below drift, swollen at drift Playing the effect of guiding when of contracting, connected by six screws fixing between them, base is also required to Uniformly it is slit into six lobes.After base and drift installation diagram as shown in Figure 3 installs, by six Spring and the breathing of a plug control drift, complete workpiece picks and places the demoulding with drift. The whole process of cold reducing realizes on hydraulic press, and its operation principle is to first pass through Take blame for others under lathe plug top to operating position, six lobe drifts are strutted, then after warm forging Clutch can be put on drift, lathe slide block down moves, clutch can by die time, die The external diameter of clutch can be carried out drawing extruding, make wall thickness the most thinning, and make material produce footpath To flowing, wrap drift tightly, thus realize the complete molding of inner chamber spherical, then Taking blame for others of lathe pulls down plug, and six lobe drifts can be shunk, so by the effect of spring Rear lathe slide block up moves, die by the resilience after clutch can cold reducing clutch can Taking away drift, last artificial taking-up is just.

Whole operating process is very simple, but but exposes a lot of problem in practical operation:

(1), after plug top puts in place, six lobe drifts tightly will not wrap up as theory is imagined Living plug, strut regularly, but there will be warpage, especially upper end can have necessarily with plug Gap.Reason is likely due to drift and to shrink back and forth, thus it requires drift base and pressing plate Between have certain gap, this gap result in the generation of warpage just.

(2) during undergauge, six lobes of drift can produce slight shift, makes finishing After six raceway grooves of inner chamber be not uniformly distributed, center is the most coaxial.

(3) the bad control of raceway diameter, it is easy to the margin of tolerance allowed beyond size.

(4) some position finishing is less than, or the state after warm forging.

(5) easily there is burr in the interstitial site at six lobes, affects the contraction of drift.

Utility model content

It is simple that technical problem to be solved in the utility model is to provide a kind of mould structure, zero Part is few, the clutch can of the most standard compliant improvement of dimensional accuracy, roughness, fitness etc. Finish forge ditch cold reducing mould.

For solving above-mentioned technical problem, technical solution adopted in the utility model is: 1, one Plant the clutch can finish forge ditch cold reducing mould improved, it is characterised in that: include base and drift master The trimming punch that body is structure as a whole, described trimming punch upper end even partition is six lobes, its In cut the 1/2-5/6 that groove depth is trimming punch whole height.

Further technical scheme is, described in cut groove and include that rectangle cuts slot part and circle cuts groove Part, wherein rectangle cuts slot part and cuts slot part with circle and be connected, and described circle cuts slot part Diameter cut the width of slot part more than rectangle.

Further technical scheme also resides in, described in cut groove depth be trimming punch whole height 3/4。

Use and have the beneficial effects that produced by technique scheme: this utility model has as follows Advantage:

(1) due to trimming punch be one, so rigidity is better than split, plug top Behind operating position, drift will not warpage, can tightly wrap plug.

(2), in work process, six lobes of drift will not offset, and position degree is relatively good, Thus after ensureing that finishing completes, six raceway grooves of inner chamber are uniformly distributed.

(3) inner chamber raceway diameter is easily controlled, and can the most arbitrarily adjust size big Little.

(4) mould difficulty of processing is lower than Split type structure, and precision is easier to ensure that.

(5) die assembly is simple and convenient, easily operation and adjustment.

Accompanying drawing explanation

With detailed description of the invention this utility model made further details of theory below in conjunction with the accompanying drawings Bright.

Fig. 1-2 is upward view and the sectional view of certain clutch can finish forge ditch respectively；

Fig. 3 is that certain clutch can finish forge ditch forges package assembly schematic diagram；

Fig. 4-5 is the vertical view of certain clutch can finish forge ditch forging forging old-fashioned trimming punch used Figure and sectional view；

Fig. 6-7 is top view and the sectional view of this utility model trimming punch；

Wherein: 1, old-fashioned trimming punch；2, plug；3, base；4, spring；5, drift Main body；6, circle cuts slot part；7, rectangle cuts slot part；8, groove is cut.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, in this utility model embodiment Technical scheme is clearly and completely described, it is clear that described embodiment is only this reality By novel a part of embodiment rather than whole embodiments.Based in this utility model Embodiment, those of ordinary skill in the art are obtained under not making creative work premise Every other embodiment, broadly falls into the scope of this utility model protection.

Elaborate a lot of detail in the following description so that fully understanding that this practicality is new Type, but this utility model can also use other to be different from alternate manner described here to be come real Executing, those skilled in the art can do similar pushing away in the case of this utility model intension Extensively, therefore this utility model is not limited by following public specific embodiment.

As shown in fig. 6-7, this utility model includes that base 3 is structure as a whole with punch body 5 Trimming punch, described trimming punch upper end even partition is six lobes, wherein cuts groove 8 degree of depth 1/2-5/6 for trimming punch whole height.

Preferably, described in cut groove 8 and include that rectangle cuts slot part 7 and circle cuts slot part 6, its Middle rectangle cuts slot part 7 and cuts slot part 6 with circle and be connected, and described circle cuts slot part 7 Diameter cuts the width of slot part 6 more than rectangle.

Preferably, cutting groove 8 degree of depth described in is the 3/4 of trimming punch whole height.

Based on the bad processing of said structure, variety of problems the most easily occurs, so applicant utilizes A lot of methods go to solve these problems, researched and developed successfully this utility model later, Split type structure is changed For overall structure, i.e. cold reducing drift and the base of six lobes are integrated, monolithic process, During assembling, drift pressing plate is fixed, and will not move back and forth, this addresses the problem drift warpage, The problem of skew.Another one is it is crucial that the release problems of drift, and we are not that drift is complete Being divided into six lobes, simply drift upper part is segmented into six lobes, lower end still connects together, and Original extended length, it is desirable to reach to enable drift upper end easily compress preferably, worked Cheng Zhong, after cold reducing completes, first removes plug, and then lathe slide block up moves, die Can be to rushing first radial compression power while driving forging up to walk, drift is at the work of extruding force With lower to middle shrinkage, thus deviating from from forging inner chamber smoothly, last drift can rely on self Elastic return to original state.

Claims (3)

1. the clutch can finish forge ditch cold reducing mould improved, it is characterised in that: include the end The trimming punch that seat is structure as a whole with punch body, described trimming punch upper end even partition It is six lobes, wherein cuts the 1/2-5/6 that groove depth is trimming punch whole height.

The clutch can finish forge ditch cold reducing mould of a kind of improvement the most according to claim 1, It is characterized in that: described in cut groove and include that rectangle cuts slot part and circle cuts slot part, wherein rectangle Cutting slot part to cut slot part with circle and be connected, described circle cuts the diameter of slot part more than rectangle Cut the width of slot part.

The clutch can finish forge ditch cold reducing mould of a kind of improvement the most according to claim 1, It is characterized in that: described in cut that groove depth is trimming punch whole height 3/4.