CN1264626C - Zinc-base alloy turbine precision shaping method and special mould - Google Patents
Zinc-base alloy turbine precision shaping method and special mould Download PDFInfo
- Publication number
- CN1264626C CN1264626C CN 200410044961 CN200410044961A CN1264626C CN 1264626 C CN1264626 C CN 1264626C CN 200410044961 CN200410044961 CN 200410044961 CN 200410044961 A CN200410044961 A CN 200410044961A CN 1264626 C CN1264626 C CN 1264626C
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- tooth
- profile
- zinc
- worm gear
- mould
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Abstract
The present invention provides a zinc-base alloy worm wheel precise form method and a special mould thereof, which not only solves the problem of the formation of toothed parts of a worm wheel, but also solves the problem of taking out work pieces successfully from the mould. The forming method adopts the liquid mould forging technology of the zinc-base alloy, and the toothed parts of the worm wheel are formed fully by the fluidity of liquid metal. A forming tool then adopts a composite mould which forms a splicing structure according to the number of teeth, and a splicing block can realize a certain amount of horizontal displacement so as to achieve the goal of successfully taking out the formed work pieces from the mould. The present invention not only can ensure the precision of the shape and the dimension of the toothed parts of the worm wheel, but also can obtain a zinc-base alloy worm wheel forging stock with compact organization and excellent inherent quality. Moreover, the present invention saves energy. The working hour consumption of subsequent processing can be reduced greatly, so that the goals of saving energy and saving materials can be achieved.
Description
Technical field
The present invention relates to the processing of machine components, refer in particular to a kind of accurate forming method and particular manufacturing craft of zinc-containing alloy worm gear, promptly only need the manufacturing process of the zinc-containing alloy blank of refining of a small amount of following process.
Technical background
Worm gear is the wearing piece of widely applying in mechanical industry.Zinc-containing alloy replaces expensive copper alloy with its good serviceability and has become inexorable trend.At present, domestic zinc-containing alloy worm gear normally adopts cast blank to process, owing to be subjected to the restriction of casting crystalline condition, not only the chipping allowance of blank is big, and the also difficult elimination of inner defective.The reason that particularly large-sized zinc-containing alloy worm gear, the generation of casting flaw such as the end contracts, loose and secondary oxidation is mingled with cause worm gear to scrap in early days under the condition under arms often.
Liquid forging is a kind of new type of metal shaping novel process method, it is by the flowability of metal casting and the plastic degeneration of forging, force liquid metal crystallization and the capacity flow takes place under certain pressure, make blank inherence and presentation quality compare significant the variation all taken place with casting.
The Precision Forming Technology of state's internal tooth class part only is confined to straight-tooth and umbrella tooth class part at present, because the profile of worm gear part tooth portion is a helical form, and has recess, after the method that causes part to pass through pressure processing was shaped, the problem of depanning was difficult to solve.
Summary of the invention
In order to overcome above-mentioned difficulties, the invention provides a kind of accurate forming method and particular manufacturing craft of zinc-containing alloy worm gear, not only solve the problem of the tooth portion shaping of worm gear, but also solved the problem of from mould, taking out workpiece smoothly.
The present invention solves the problems of the technologies described above the scheme that is adopted:
The accurate forming method of zinc-containing alloy worm gear is:
1. the driving profile of tooth is inserted and is moved to mold center, and it is drawn in until mutual closure;
2. zinc-containing alloy liquid after the melting is poured into through the profile of tooth of preheating and insert in the die cavity that assembly forms;
3. behind liquid towards metal pressurization and the pressurize certain hour, make it be full of die cavity and solidify;
4. profile of tooth is inserted and is retired backward, profile of tooth is inserted and Forming Workpiece disengages;
5. the workpiece after will being shaped ejects die cavity.
The feature of particular manufacturing craft is profile of tooth to be set insert, be positioned over and be fixed on that the chute of T-shaped groove props up in the piece on the lower bolster, do not place the die cavity that the profile of tooth identical with the worm gear number of teeth of processed worm gear inserted and surrounded, be provided with push rod and run through lower bolster successively, cushion block, the die base plate is through the fixing lower end of worm gear of ejector, and by upper punch through running through the fixing upper end of worm gear of bearing pin wherein, profile of tooth is inserted entad fixing by the tapered sleeve of band wedge, tapered sleeve is fixed on the lower bolster through oil cylinder, housing screw compresses profile of tooth through bracing frame and inserts, and sheathed compression spring provides the backhaul power that profile of tooth is inserted on the housing screw.
The present invention, at first the liquid forging process of employing zinc-containing alloy on manufacturing process by the flowability of liquid metal, makes the tooth portion of worm gear be shaped full.In the process of pressurization die forging, eliminate defectives such as shrinkage cavity, loose, large dendritic crystal, improve the inherent quality of workpiece.Secondly, on the shaping frock, adopt assembling die, form edge by the number of teeth and piece together structure, insert and to realize a certain amount of horizontal displacement, reach the purpose that the workpiece after the shaping is taken out smoothly from mould.
The invention has the beneficial effects as follows: can realize the precision form of zinc-containing alloy worm gear part, both guarantee the precision of worm-gear toothing portion shape and size, can obtain the zinc-containing alloy worm gear forging stock of dense structure, inherent quality excellence again.Compare with casting, material can be saved more than 30%, and machining period is the 1/3-1/5 of cast blank, produces efficient in batches and can improve 3-5 doubly.Save the energy, the consumption in following process man-hour can significantly reduce, and realizes the purpose of energy-saving material-saving.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is a zinc-containing alloy worm gear liquid forging shaping dies schematic diagram:
Among the figure 1, upper punch, 2, bearing pin, 3, worm gear, 4, the die base plate, 5, profile of tooth inserts, 6 tapered sleeves, 7, oil cylinder 8, bracing frame, 9, housing screw, 10 compression springs, 11, ejector 12, chute prop up piece, 13, lower bolster, 14, cushion block, 15, push rod
The specific embodiment
As shown in Figure 1, worm gear 3 is at the 5 die cavity internal shapings that surround of being inserted by the profile of tooth identical with the number of teeth, and profile of tooth is inserted and 5 can be propped up in the piece 12 at the chute by the T-slot guide effect and radially move forward and backward.Entad displacement is determined by the tapered sleeve 6 that oil cylinder 7 drives, when 5 inclined-planes of profile of tooth edge under the effect of the wedge of tapered sleeve 6 after complete closure is moved at the center, be its extreme position (shaping position).Profile of tooth insert 5 with die base plate 4 for the little matched in clearance of clearance distance less than 0.05mm, overflow under the effect of pressure to avoid liquid metal, thereby form flash.Profile of tooth 5 the backhaul power of inserting is provided by compression spring 10, and the forging stock ejecting force of worm gear 3 is provided by the hydraulic press liftout tank, acts on the forging stock of worm gear 3 through push rod 15, ejector 11.It is fixing through ejector 11 that lower bolster 13, cushion block 14, die base plate 4 are run through successively by push rod 15 in the lower end of worm gear 3, the upper end is fixing through the bearing pin 2 that runs through wherein by upper punch 1, tapered sleeve 6 is fixed on the lower bolster 13 through oil cylinder, and housing screw 9 compresses profile of tooth through bracing frame 8 and inserts 5.
The shaping operation process of zinc-containing alloy worm gear forging stock is as follows:
1, start oil cylinder 7, tapered sleeve 6 is descending, and wedge and profile of tooth 5 inclined-planes of inserting contact it on, and the driving profile of tooth is inserted and moved to mold center, and with its gathering until mutual closure;
2, zinc-containing alloy liquid after the melting is poured into through in the die cavity of preheating;
3, start hydraulic press, behind pressurization of upper punch 1 liquid towards metal and the pressurize certain hour, make it be full of die cavity and solidify;
4, upper punch 1 backhaul starts oil cylinder, drives tapered sleeve 6 and goes upward to insert with profile of tooth and 5 disengage, and profile of tooth is inserted and 5 retired backward under the effect of compression spring 10, profile of tooth is inserted 5 disengage with Forming Workpiece;
5, liftout tank is up under the hydraulic press, and the workpiece after will being shaped by push rod 15, ejector 11 ejects die cavity.
Claims (2)
1. the accurate forming method of zinc-containing alloy worm gear is characterized in that:
A. drive profile of tooth and insert and move, and it is drawn in until mutual closure to mold center;
B. zinc-containing alloy liquid after the melting is poured into through the profile of tooth of preheating and insert in the die cavity that assembly forms;
C. behind liquid towards metal pressurization and the pressurize certain hour, make it be full of die cavity and solidify;
D. profile of tooth is inserted and is retired backward, profile of tooth is inserted and Forming Workpiece disengages;
E.. the workpiece after will being shaped ejects die cavity.
2. realize the particular manufacturing craft of the accurate forming method of the described zinc-containing alloy worm gear of claim 1, it is characterized in that being provided with profile of tooth insert (5), being positioned over the chute that is fixed on the last T-shaped groove of lower bolster (13) props up in the piece (12), be provided with the profile of tooth identical of the placing processed worm gear die cavity that (5) surround of inserting with the worm gear number of teeth, be provided with push rod (15) and run through lower bolster (13) successively, cushion block (14), die base plate (4) is through the fixing lower end of worm gear (3) of ejector (11), and by upper punch (1) through running through the fixing upper end of worm gear (3) of bearing pin (2) wherein, profile of tooth insert (5) entad fixing by the tapered sleeve (6) of band wedge, tapered sleeve (6) is fixed on the lower bolster (13) through oil cylinder, housing screw (9) compresses profile of tooth through bracing frame (8) and inserts (5), and housing screw (9) is gone up the backhaul power that sheathed compression spring (10) provides profile of tooth to insert (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410044961 CN1264626C (en) | 2004-06-07 | 2004-06-07 | Zinc-base alloy turbine precision shaping method and special mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410044961 CN1264626C (en) | 2004-06-07 | 2004-06-07 | Zinc-base alloy turbine precision shaping method and special mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1583321A CN1583321A (en) | 2005-02-23 |
| CN1264626C true CN1264626C (en) | 2006-07-19 |
Family
ID=34601849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410044961 Expired - Fee Related CN1264626C (en) | 2004-06-07 | 2004-06-07 | Zinc-base alloy turbine precision shaping method and special mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1264626C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104416141B (en) * | 2013-08-28 | 2017-05-03 | 比亚迪股份有限公司 | Forming method and die for amorphous alloy gear |
| CN106623789A (en) * | 2015-08-05 | 2017-05-10 | 天津卡斯特机械有限公司 | Excavator casting mold pressing equipment |
| CN109202033A (en) * | 2018-11-09 | 2019-01-15 | 黄成伟 | A kind of metal fittings and preparation method thereof based on mold machine-shaping |
| CN115106524B (en) * | 2022-07-08 | 2024-02-27 | 日照德艺智能仪表有限公司 | Multi-rotation executor worm gear processing die |
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2004
- 2004-06-07 CN CN 200410044961 patent/CN1264626C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1583321A (en) | 2005-02-23 |
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