CN1136479A - Teeth extrusion mould for working iron door hinge teeth end and its method for extruding teeth end - Google Patents

Abstract

The teeth extrusion mould consists of quide column, guide sleeve, reset spring, upper form, limiting block, upper slide block, upper die holder, lower die holder, reset rubber, bed piece of lower die holder, lower slide block, lower form and regulating screw and is formed up by mutually connecting. The method for extruding the end of tooth is as follows: when the hinge enters the work face of the lower slide block, the press is started, the slide block of the press moves down ward to push forward said die assembly, the wedge shaped upper slide block drives the lower slide block to do instantaneous movement, each work face of the lower slideblock beats each tooth end to implement no filings working and achieve the demanded quality. When the press moves upward, the die assembly will reset, and the hinge with draws from the work face. Said invention features quick speed, high efficiency, low cost and high quality.

Description

The crowded tooth mould of working iron door hinge teeth and extruding increment method thereof

The present invention is the crowded tooth mould and the extruding increment method thereof of working iron door hinge teeth, belongs to the Machining Technology of daily metallic article.Be particularly related to iron door hinge page or leaf processing unit (plant) and process technology.

At present, fine finishining hinge page or leaf each tooth, space width and guarantee the process of each increment face quality in the iron door hinge production process, the overwhelming majority is to adopt milling cutter milling method.It is general that what use is simple and easy milling machine, have many milling cutter, every the increment face of milling cutter or per two each adjacent two teeth of milling cutter milling, with reach required tooth, space width size and make each increment face smooth, be parallel to each other and perpendicular to the gear ring axis.With the processing of milling cutter milling method, generally existing tooth, space width size quality instability qualitatively, the increment face is problem such as burn and grain raising easily.Simultaneously, exist technically tooth, space width size adjustment inconvenience, change shortcomings such as milling cutter trouble, process velocity is slow, the milling cutter loss is big.Present this fine finishining increment face technology, for the production of small lot iron door hinge page or leaf, its weak point is also not really outstanding, but for the production of iron door hinge page or leaf in enormous quantities, high-grade, its shortcoming and defect part is but very obviously outstanding, has often caused many unnecessary wastes and loss.

Purpose of the present invention is exactly in order to overcome and solve the quality instability of the milling cutter milling method existence of existing working iron door hinge page or leaf tooth, the increment face is easily burnt, grain raising, tooth and slot size are regulated inconvenient, the milling cutter loss is big, change the milling cutter trouble, the shortcoming and defect that process velocity waits slowly, the accurate working iron door hinge page or leaf of a kind of energy of research and design tooth, make teeth size precision height, steady quality, the increment face is steady, be parallel to each other and perpendicular to the gear ring axis, tooth and slot size are easy to adjust, the crowded tooth mould of working iron door hinge teeth convenient to operation and extruding increment method thereof.

The present invention realizes by following structure technology scheme and method and technology scheme: the structural representation of the crowded tooth mould of iron door hinge teeth as shown in Figure 1, it is by guide pillar 1, guide pin bushing 2, back-moving spring 3, cope match-plate pattern 4, limited block 5, top shoe 6, upper bolster 7, die shoe 8, rubber 9 resets, die shoe backing plate 10, sliding block 11, lower bolster 12, adjusting screw(rod) 13 is connected to form, its mutual alignment and annexation are: guide pillar 1 packs in guide pin bushing 2 and the back-moving spring 3, guide pin bushing 2 is positioned at 3 tops, bullet position that reset, cope match-plate pattern 4 is connected with lower bolster 12 by guide pillar 1 and adjusting screw(rod) 13, top shoe 6 is embedded in the upper bolster 7, upper bolster 7 is fixed on cope match-plate pattern 4 by screw, sliding block 11 is installed between die shoe 8 and the die shoe backing plate 10 for matched in clearance, sliding block 11 slides in the crack betwixt, limited block 5 cooperates with the side clearance of the top shoe 6 on its both sides, top shoe 6 can slide up and down in the gap, and the rubber 9 that resets is installed between two sliding blocks 11.Its simple action principle is as follows: this mould is installed on the underloading crank press and uses, for the upper and lower motion of press ram being converted to the side-to-side movement of sliding block, adopt Wedge mechanism, be that sliding block has been designed to beveled, top shoe is designed to inclined wedge-shaped, and the upper and lower motion of top shoe drives sliding block and does side-to-side movement.When press ram arrival a bit of displacement BBC, press ram promotes top shoe during work, and top shoe drives sliding block and does the moment motion, and the sliding block working face bounces the increment face.Mould bases adopts the spring reset structure, when cope match-plate pattern 4 is installed in pressing plate on the press ram when depressing, each working face extruding increment face of sliding block.When the press ram backhaul, cope match-plate pattern is resetted by guide pillar 1, guide pin bushing 2 guiding under the effect of back-moving spring 3, resets thereby drive top shoe.Sliding block is promoted by the rubber that resets when top shoe resets and resets.Adjusting screw(rod) 13 enters between each working face with the gear ring that adapts to different error ranges easily in order to the reset height of adjusting mould bases and the relative distance between the sliding block working face.Downslide is designed to " protruding " font, can slide in the die shoe groove, and die shoe play the guiding role when sliding block moves, and it is mobile that each working face is parallel to each other.Deformation extent when limited block can reduce both sides wedge work is so that amount of compression reaches consistent.

Method and technology scheme of the present invention is extruding increment method: it is when entering between each working face of sliding block when the iron door hinge page or leaf, start forcing press, when forcing press is descending, press ram moves downward, when press ram arrives BBC a bit of displacement, press ram promotes this mould and makes mold actions, and make the inclined wedge-shaped top shoe drive sliding block of this mould do the moment side-to-side movement, each working face of sliding block bounces each increment face, the metal of the bump that produces when making the distortion of volume circle and the metal of increment face small part are expressed to the gear ring metal inside, so that each tooth, space width reaches desired size, the increment face reaches and conforms with smooth smooth quality requirement, realizes ELEMENTARY INTRODUCTION TO NON; When forcing press was up, press ram moved upward, and this mould is under the effect of back-moving spring and reset, and the iron door hinge page or leaf withdraws from die-face.

The present invention compared with prior art has following advantage and beneficial effect: (1) is because the unique texture and the extruding increment method of the present invention of this mould, make when press ram promotion top shoe has displacement greatly, sliding block is only made trace movement, displacement accuracy is higher, record its precision through experiment and can reach 0.05mm, such machining accuracy is enough to satisfy the requirement of iron door hinge page or leaf tooth, space width dimensional accuracy; When the closed height of press ram was constant, the displacement of sliding block was certain, so the size of hinge page or leaf tooth that processes and space width also is stable; (2), multiple different process of surface treatment is arranged usually for the iron door hinge of top grade.So when before processing hinge page or leaf being assembled together, its inter-lobe clearance has different requirements, promptly each tooth of hinge page or leaf, space width should reach different dimensional requirements, just can make different surface treatment after inter-lobe clearance reach consistent.But process with prior art, then its size adjustment is very inconvenient, inaccessible various requirement, and adopt the technology of the present invention, and utilize the Wedge mechanism of this mould, regulate size and reach its gap requirement, it is convenient then to be very easy to.Change the relative displacement of upper and lower slide block by the closed height of regulating press ram, just can change the moving displacement of sliding block, thereby just can regulate the amount of compression of increment face, can make tooth and space width reach different dimensional requirements easily; (3) be to roll up the metal and the increment face small part metal that enclose the bump that is out of shape generation with the sliding block working face to be expressed to the gear ring metal inside owing to processing with the technology of the present invention, quality problems such as burn and grain raising realized ELEMENTARY INTRODUCTION TO NON, so can not appear in the increment face; (4) because the sliding block of this mould adopts the Cr12 material, and through Quenching Treatment, its hardness reaches HRC62～64, so its compressive surface extent of deterioration is little during work, and the connection long service life of mould; (5) because the top shoe of this mould is an inclined wedge-shaped, and cooperate on the inclined-plane with sliding block, top shoe is designed to monolithic and is embedded in the upper bolster, like this when regulating each top shoe respectively and insert the degree of depth of die holder, just can regulate the displacement of each sliding block respectively, can make each increment face obtain identical amount of compression.And when a certain top shoe wedge damages, just can change separately, this makes processing, the adjusting of this mould top shoe wedge to make things convenient for and is economical; (6) because the processing method of unique texture of this mould and employing extruding increment method, during work, orientating as freely of left and right directions located, and each working face moves simultaneously and presses to each self-corresponding increment face, just obtain identical amount of compression at each increment face, each increment face is parallel to each other.The gear ring axis is parallel with hinge page or leaf inner edge during the volume circle, and sliding block front end face and working face are perpendicular, use each increment face of extruding increment method extruding back perpendicular to the gear ring axis.Like this, each the increment face after the extruding not only had been parallel to each other but also perpendicular to the gear ring axis; (7) in sum, the present invention overcomes and has solved the shortcoming and defect that prior art exists, and effect is comparatively remarkable, and is from operating efficiency, faster more than 1.5 times than the operating rate with prior art with process velocity of the present invention; From product quality, because the present invention has realized ELEMENTARY INTRODUCTION TO NON, product does not go out waste product, substandard products basically, and product percent of pass is up to more than 99.9%; From the service life of processing unit (plant), the milling cutter loss of existing milling method is big, and continuous operation just needed tool changing once in 48 hours, and this mould can use six months just need change sliding block one time continuously.So no matter the present invention than prior art increases significantly from the raising of production efficiency, the reduction of production cost, the raising of product percent of pass, the raising of productivity effect, and bigger economic benefit and social benefit are arranged.

Below Figure of description is further specified as follows: Fig. 1 squeezes the structural representation of tooth mould for iron door hinge teeth.Among the figure: 1 is adjusting screw(rod) for lower bolster, 13 for sliding block, 12 for die shoe backing plate, 11 for the rubber that resets, 10 for die shoe, 9 for upper bolster, 8 for top shoe, 7 for limited block, 6 for cope match-plate pattern, 5 for back-moving spring, 4 for guide pin bushing, 3 for guide pillar, 2.

Embodiments of the present invention are as follows: (1) processes hinge tooth end of the present invention by design shown in Figure 1 and squeezes the tooth mould, and a series of standard machinery processing methods such as its parts can be by plane commonly used, mill, mill, car and line cutting are processed by the drawing dimensional requirement; (2), must be noted that during assembling and adjust equating of each top shoe centre-to-centre spacing by when assembling, the at first first fit on die component installed shown in Figure 1; (3) assembled die component after, measure the two sides size of both sides top shoe, by the length dimension of this size match grinding die shoe and die shoe backing plate, be matched in clearance between two limited blocks again to reach top shoe two sides, assembling back; (4),, make the distance between each working face of sliding block need can be fit to each tooth of working iron door hinge page or leaf to enter till each working face again with upper and lower template matched moulds, adjustment adjusting screw(rod) by behind fit on die component respectively shown in Figure 1 and the following die component.So far, crowded tooth mould of the present invention is finished enforcement preferably; (5) on the basis that this crowded tooth mould is implemented, do, just can implement the inventive method well according to the method scheme of the described extruding increment of top specification method.

Claims (2)

1, a kind of crowded tooth mould of working iron door hinge tooth end, it is characterized in that: it is by guide pillar (1), guide pin bushing (2), back-moving spring (3), cope match-plate pattern (4), limited block (5), top shoe (6), upper bolster (7), die shoe (8), rubber (9) resets, counterdie seat board (10), sliding block (11), lower bolster (12), adjusting screw(rod) (13) is connected to form, its mutual alignment and annexation are: guide pillar (1) packs in guide pin bushing (2) and the back-moving spring (3), guide pin bushing (2) is positioned at the top, bullet position (3) that resets, cope match-plate pattern (4) is connected with lower bolster (12) by guide pillar (1) and adjusting screw(rod) (13), top shoe (6) is embedded in the upper bolster (7), upper bolster (7) is fixed on cope match-plate pattern (4) by screw, sliding block (11) is installed between die shoe (8) and the die shoe backing plate (10) for matched in clearance, sliding block (11) slides in the crack betwixt, limited block (5) cooperates with the side clearance of the top shoe (6) on its both sides, top shoe (6) can slide up and down in the gap, and the rubber that resets (9) is installed between two sliding blocks (11).

2, a kind of extruding increment method of working iron door hinge teeth, it is characterized in that: it is when entering between each working face of sliding block when the iron door hinge page or leaf, start forcing press, when forcing press is descending, press ram moves downward, when press ram arrives BBC a bit of displacement, press ram promotes this mould and makes mold actions, make the inclined wedge-shaped top shoe drive sliding block of this mould do the moment side-to-side movement, each working face of sliding block bounces each increment face, the metal of the bump that produces when making the distortion of volume circle and the metal of increment face small part are expressed to the gear ring metal inside, so that each tooth, space width reaches desired size, the increment face reaches and conforms with smooth smooth quality requirement, realize ELEMENTARY INTRODUCTION TO NON, when forcing press was up, press ram moved upward, this mould is under the effect of back-moving spring and reset, and the iron door hinge page or leaf is released die-face.

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