CN202621811U - Helical cylindrical gear toothed and cone gear toothed precision forging die, forged by one hammer in one die, of compound gear - Google Patents

Helical cylindrical gear toothed and cone gear toothed precision forging die, forged by one hammer in one die, of compound gear Download PDF

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Publication number
CN202621811U
CN202621811U CN 201220226826 CN201220226826U CN202621811U CN 202621811 U CN202621811 U CN 202621811U CN 201220226826 CN201220226826 CN 201220226826 CN 201220226826 U CN201220226826 U CN 201220226826U CN 202621811 U CN202621811 U CN 202621811U
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gear
tooth
die
profile
swaging die
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CN 201220226826
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Chinese (zh)
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杨其融
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杨其融
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Abstract

A helical cylindrical gear toothed and cone gear toothed precision forging die, forged by one hammer in one die, of a compound gear adopts the technical point of the technical scheme that a helical cylindrical gear cavity die is a helical cylindrical internal gear, and can float up and down; the helical cylindrical gear toothed cavity die and a cone gear toothed cavity die are independent parts separated from each other before die assembly, but after die assembly, an integrated part doing no relative movement is formed by a toothed die and a stress ring positioning pin (2); a lower male die is fixed in the axial direction, and can rotate flexibly through a bidirectional thrust bearing (3) in the radial direction; and the demoulding and the unloading of a forge piece are finished in such a way that under the action of an unloading force provided in descending of a slide block and the action of a relatively independent ring-shaped demoulding and unloading device (25), the helical cylindrical gear toothed cavity die (9) and a helical cylindrical gear toothed cavity die stress ring (11) move downwards integrally. The die has the function of replacing the helical cylindrical gear toothed machining with die forging, and has the benefits of remarkably saving energy and reducing consumption, improving the work efficiency, and lowering the cost.

Description

One hammering of one mould becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear
Technical field
The utility model belongs to the forging technology field of machine industry.
Background technology
Like cylindric spiral gear among Fig. 1 and the compound gear that has a bevel gear purposes is very widely arranged in automobile, boats and ships, engineering machinery and machinery equipment.Producing this type gear now both at home and abroad nearly all is the profile of tooth that adopts the mechanical processing technique production helical gears of gear hobbing, roll flute; This processing method is a production technology ripe, typing.But height from the Scientific Outlook on Development of good and fast development; The manufacturing process of this traditional helical gears; Also there are intrinsic deficiency and defective: the one, machined efficient is very low, cost is very high; Use that gear-hobbing machine processing 1 normal module 6.5, the number of teeth 30, outside circle are 221, transverse tooth thickness is 53, helical angle is 13 ° helical teeth, helical tooth roller gear and the duplicate gear that has bevel gear; The profile of tooth that singly is the hobbing helical gears just needs two many hours ability to accomplish one, stays the stock removal of 0.4mm after the gear hobbing.The 2nd, profile of tooth is shaped through the gear-hobbing machine cut; In the cutting process of gear hobbing; Cut off the metallic fiber between tooth and the tooth, therefore in service in gear meshing, to go out the roller gear intensity of helical teeth profile of tooth far short of what is expected with direct finish forge comparatively speaking.The 3rd, in the working angles of gear hobbing, fall to have become waste material to a lot of metal cuttings, so the norm quota of consumption of material is high.Because the objective reality of above-mentioned three defectives, therefore with the helical gears of conventional method processing and have that the compound gear cost of bevel gear is high, efficient is low, mechanical strength is relatively poor.
Summary of the invention:
In order to overcome the deficiency that helical gears profile of tooth machining gear hobbing efficient is low, cost is high, the norm of material consumption is high, profile of tooth face machinery intensity is low of compound gear; It is a kind of in same set of mould that the utility model provides, and a hammer forges the finish forge mould of compound gear helical gears profile of tooth and conical gear profile of tooth simultaneously.Mould structure with closed relatively directly forges helical gears profile of tooth and bevel gear profile of tooth, and is in same set of mould, and a hammering causes the structural design of the precision forging die of shape.The technical essential that the utility model solves the technical scheme that its technical problem adopted is:
1. a mould one hammering becomes the cylindric spiral gear profile of tooth and the conical gear profile of tooth finish forge mould of compound gear; The technical essential of its technical scheme is: it is can fluctuate in the process of mold work in a complete cylinder helical teeth internal gear and it for the swaging die of cylindric spiral gear; The profile of tooth swaging die of the swaging die of cylindric spiral gear profile of tooth and conical gear is the independently part that separates separately before matched moulds; But behind matched moulds, pass through the effect of tooth die and circle stress alignment pin (2); Form an one-piece parts that does not have relative motion, lower punch axially be fix, radially can rotate flexibly through double thrustbearing (3).The demoulding discharging of forging is the stripping force that provided by slide block down and under the effect of relatively independent annular demoulding discharger (25), and cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) integral body have been moved downward.
2. according to the technical essential 1 described " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " of technical scheme; The swaging die of cylindric spiral gear it be a cylinder helical teeth internal gear and be to fluctuate; Its structural feature is: the cylindric spiral gear profile of tooth swaging die (9) of annular and the cylindric spiral gear profile of tooth swaging die circle stress (11) of annular stop rotational pin (23) to form a global facility through conical cylindric spiral gear profile of tooth swaging die, and it can fluctuate the swaging die of cylindric spiral gear (9) under the alternating action of compression spring (10) active force and press ram hitting power.
3. according to the technical essential 1 described " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " of technical scheme; The profile of tooth swaging die of the swaging die of cylindric spiral gear profile of tooth and conical gear is the independently part that separates separately before matched moulds; But behind matched moulds, form an one-piece parts that does not have relative motion through tooth die and circle stress alignment pin (2); Its structural feature is: its endoporus of cylindric spiral gear profile of tooth swaging die (9) is that cylinder helical teeth internal gear, its cylindrical are up big and down small taper shapes; Its profile of cylindric spiral gear profile of tooth swaging die circle stress (11) is up-small and down-big cylindrical; Endoporus is up big and down small taper shape; Braking circular hole, its lower surface that its upper surface has the prevention more than 4 to rotate has being used to more than 4 to compress the circular arc slotted hole that spring is installed, and between the faying face of cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) plural limit pin hole arranged.
4. according to the technical essential 1 described " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " of technical scheme; Lower punch (6) axially be fix, radially can rotate flexibly through double thrustbearing (3), its structural feature is: lower punch (6) be a solid and on it in following three sections profile be that difform, upper end is that the up-small and down-big two-stage frustum of a cone, middle part is that helical teeth internal gear with cylindric spiral gear profile of tooth swaging die (9) that match and cylindric spiral gear, lower end that glade plane space is arranged are cylindrical less than the middle part.
5. according to the technical essential 1 described " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " of technical scheme; The demoulding discharging of forging is by the relatively independent material mould (25) that takes off cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) integral body to have been moved downward; It is characterized in that: relatively independent demoulding discharger (25) is the annular solid that there is annular groove a upper surface; On the groove plane through hole more than 4 is arranged; There is a flat thin annular lower surface, at annular several upper ends is arranged in the inner part is that cylindrical lower end is the through hole of hemispheric containing steel ball; Through steel ball cover plate (25-3) plurality of steel balls (25-2) is installed, annular have in the outer part more than 4 with the groove plane on the corresponding screwed hole of through hole.
6. according to the steel ball cover plate (25-3) of the technical essential 5 described " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " of technical scheme; It is characterized in that: it is flat annular; There are through hole, its through hole being circle more than the center line of height, below the center line of height, being hemispherical tapped through hole is arranged in its outside in the inboard.
The beneficial effect of the utility model is: 1. produce helical teeth, helical tooth roller gear and have compound gear highly efficient in productivity of bevel gear.To process a normal module 6.5; The number of teeth 30; Outside circle is 221, and transverse tooth thickness is 53, and helical angle is that 13 ° helical teeth, helical tooth roller gear is example: only process the general needs of helical gears with the gear-hobbing machine processing technology and could process a gear in about 60 minutes; Process this gear with mechanical processing technique, the mill amount of staying is 0.4mm.Compound gear with the utility model forging die is produced helical gears and had a bevel gear per hour can be produced about 30; Still can only stay the grinding allowance of 0.4mm; Also can adopt cold precision forging correction of the flank shape mould to form the compound gear of final size precision; Increase the gear of this correction of the flank shape forging, its gear tooth does not need follow-up machining fully.Can improve work efficiency more than 30 times.2.: 3. the stock utilization of gear improves more than 35%: the mechanical strength of having improved engaging tooth.4.: the comprehensive production cost about 35% that can reduce gear product; Can significantly improve economic benefit of enterprises and social benefit; Help building a resource-conserving society; Meet the requirements of the times of energy-saving and emission-reduction development low-carbon economy.Help improving economic benefit of enterprises, help building a resource-conserving society; Help the requirements of the times of energy-saving and emission-reduction development low-carbon economy.
Description of drawings:
Fig. 1 is the compound gear part drawing.
Fig. 2 is the compound gear forging drawing.
Fig. 3 is the state diagram of mould wait work.
Fig. 4 is the state diagram that the compound gear forging molding is finished.
Fig. 5 gets back to the state diagram of after top dead center with the compound gear forging molding press ram that finishes.
Fig. 6 be with the compound gear forging molding finish press ram get back to after top dead center put forging take off the material mould state diagram.
Fig. 7 is the state diagram that second stroke of forcing press accomplished the forging demoulding.
Fig. 8 is a compound gear forging demoulding discharger.
The specific embodiment:
In order clearly to describe the specific embodiment and the enforcement of being convenient to this patent, whole parts tabulations are described below:
Sequence number Title Quantity Material Remarks
1 Die shoe 1 ZG45 Normalizing, tempering
2 Tooth die and circle stress alignment pin 4 H13 HRC45-50
3 Thrust bearing is circle down 1 H13 HRC48-52
3-1 Thrust bearing is circle dismounting pad mould down 1 5CrMnMo HRC42-47
4 Steel ball ? Outsourcing ?
5 Enclose on the thrust bearing 1 H13 HRC48-52
6 Lower punch 1 H13 HRC46-51
[0021]
7 Blank material after the heating ? ? ?
7-1 Forging ?N ? ?
8 The two-way thrust pressing plate of bearing ?1 5CrNiMo HRC43-48
9 Cylindric spiral gear profile of tooth swaging die ?1 H13 HRC45-50
10 The compression spring ?6 65Mn HRC50-55
11 Cylindric spiral gear profile of tooth swaging die circle stress ?1 5CrNiMo HRC40-45
12 Screw rod ?6 5CrNiMo HRC40-45
13 Guide pillar ?4 5CrNiMo HRC35-40
14 Guide pin bushing ?4 5CrNiMo HRC35-40
15 Cylindric spiral gear height control and regulation ring ?1 5CrNiMo HRC40-45
16 Cylindric spiral gear profile of tooth swaging die is installed spacing ring ?1 5CrNiMo HRC40-45
17 Nut ?6 5CrNiMo HRC40-45
18 Conical gear tooth die circle stress ?1 5CrNiMo HRC35-40
19 The conical gear tooth die ?1 H13 HRC47-51
20 Bolt ?4 5CrNiMo HRC35-40
21 Upper bolster ?1 ZG45 Normalizing, tempering
22 Last pad mould ?1 5CrNiMo HRC40-45
23 Cylindric spiral gear profile of tooth swaging die stops rotational pin ?4 5CrNiMo HRC40-45
24 The subsequent use screwed hole of transition ?4 ? ?
25 Forging demoulding discharger main part ?1 5CrNiMo HRC40-45
25-1 Demoulding discharger attachment screw ?4 5CrNiMo HRC40-45
25-2 Demoulding discharger steel ball ? Outsourcing ?
25-3 Demoulding discharger steel ball cover plate ?1 5CrNiMo HRC40-45
Below in conjunction with accompanying drawing the utility model is described in further detail as follows:
Accompanying drawing 1 is the part drawing of compound gear.The parameter of its cylindric spiral gear is: the number of teeth: 35; Normal module: 5.25; Helical angle: 15 degree; 20 ° of normal pressure angles; The hand of spiral a: left side; Base circle diameter (BCD): 187.474; Base spiral angle: 12 degree 12 minutes and 3 seconds; Modification coefficient: 0.7196; Height of teeth top: 6.58; Height of teeth root 6.58; Tip diameter 203.43; Root diameter 177.06.
Accompanying drawing 2 is that the heat forging drawing of the design according to accompanying drawing 1 is the swaging die impression dimensional drawing of compound gear global shape.Because the final forging temperature of forging is higher, heat-obtaining forging shrinkage rate is 1.2%; For the tip diameter and the root diameter of cylindric spiral gear, increase the amount of contraction (rs) of hot forging.The cylindric spiral gear wheel flank of tooth stays the monolateral grinding allowance of 0.4mm.The now current cylindric spiral gear with gear-hobbing machine gear hobbing acquisition profile of tooth also is the stock removal that has stayed 0.4mm.The bevel gear that finish forge comes out need not stay grinding allowance, only adds the shrinkage rate.For the represented top keyway tooth of Fig. 1 part drawing, need not forge, because depth of profile is little, inner hole surface is again the right angle, so not as not forging this part, both helped simplifying the structural design of mould, practices thrift the manufacturing cost of mould again.Can be about 20% of the full degree of depth of through hole for the middle gross weight design basis thickness in Fig. 2 heat forging drawing, but for present embodiment, for the moulding smoothly of cylindric spiral gear bottom, middle material reducing hole should not be too dark.
Fig. 3 is the state diagram of mould wait work.Blank (7) is exactly to pack into fully within the cylindric spiral gear profile of tooth swaging die (9), behind conical gear tooth die (19) and cylindric spiral gear profile of tooth swaging die (9) matched moulds, forms the compound gear swaging die impression of relative closure like this.The notion of the compound gear swaging die impression of relative closure is: cylindric spiral gear profile of tooth swaging die is to fluctuate, so it is not absolute closed impression.Be designed to the compound gear swaging die impression of relative closure, and the beneficial effect that is not designed to block system formula impression is: two kinds of profiles of tooth of compound gear all definitely are full of, just must make blank material enough; Just right materials are fine theoretically; But,, reality should be full of profile of tooth in forging, just forge the forging height that becomes to need again; Even inaccessible formula is forged; Also be unfavorable often, because one need to solve the exhausting problem in the impression, the two excess metal materials that need to solve under the situation that is full of impression fully can flow out the problem outside the impression; Block system formula forging die is not that profile of tooth is not fully filled, and is exactly to expand mould bad.So the compound gear swaging die impression of relative closure is guaranteeing under the situation that profile of tooth is full of, need enough blow energy and equipment tonnage, excess metal can flow out outside the impression like this, is unlikely to the bad mould that expands again.
Fig. 4 is the state diagram that the compound gear forging molding is finished.For the compound gear of the different numbers of teeth, different modulus, different helical angle, the different hand of spiral, different base circle diameter (BCD), different modification coefficient, different height of teeth top, different whole depth, different tip diameters, only need the physical dimension and the gear parameter of the interior die cavity internal gear of change cylindric spiral gear profile of tooth swaging die (9); Only need to change the tooth profile parameter of conical gear tooth die (19), the geometry of mould remaining parts and size need not changed, and just can forge the cylindric spiral gear profile of tooth and the conical gear profile of tooth of the compound gear of different size.
The installation step of " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " specific embodiment is: the size of the installation gap of die shoe (1) and the T-slot of press bench match.The first step; With thrust bearing down circle dismounting pad mould (3-1) pack in the die shoe (1); Thrust bearing circle dismounting pad mould (3-1) down is a matched in clearance with die shoe (1); Afterwards lower punch (6) assembling is pressed on the thrust bearing and encloses in (5), assemble circle (3) under steel ball (4) and the thrust bearing afterwards, afterwards above-mentioned parts are pressed in the die shoe (1).Second step, the two-way thrust pressing plate of bearing (8) is packed in the die shoe (1), then load onto compression spring (10).The 3rd step was pressed into cylindric spiral gear profile of tooth swaging die (9) in the cylindric spiral gear profile of tooth swaging die circle stress (11) in company with tooth die and circle stress alignment pin (2), afterwards above-mentioned parts was packed in the lower punch (6).The 4th step; Screw rod (12) is passed die shoe (1); Then the corresponding aperture with cylindric spiral gear height control and regulation rings (15) and cylindric spiral gear profile of tooth swaging die installation spacing ring (16) is inserted in the screw rod (12); Put on nut (17), so far the lower impressions mould is cylindric spiral gear profile of tooth swaging die (a 9) assembled.In the 5th step, guide pillar (13) is packed in the die shoe (1).In the 6th step, will go up pad mould (22) and pack in the upper bolster (21).The 7th step was pressed into conical gear tooth die (19) in the conical gear tooth die circle stress (18), used bolt (20) to pack above-mentioned parts in the upper bolster (21) into afterwards.The 8th step was pressed into guide pin bushing (14) in the upper bolster (21).In the 9th step, through guide pin bushing (14) the first half with mould, integral body is inserted in the guide pillar (13), so far a whole set of mould assembled.Dismounting as for mould gets final product from the anti-order of assembling, and promptly the part from last assembling begins dismounting, and according to anti-order, the last dismounting of the part of assembling at first gets final product.
Fig. 5 gets back to the state diagram of after top dead center with the compound gear forging molding press ram that finishes.From then on state diagram can be found out: the one, and press ram is got back to after top dead center guide pillar guide pin bushing and is not broken away from fully; The 2nd, because the spring force of compression spring (10) can not be large enough to overcome the applying frictional force of forging (7-1) and cylindric spiral gear profile of tooth swaging die (9); So although press ram has been got back to upper dead center position; But the location status that the swaging die of forging and cylindric spiral gear still finishes in forging; After demoulding discharger was put in wait, second stroke of press ram given the forging demoulding.
Fig. 6 gets back to the state diagram that forging demoulding discharger is put in after top dead center with the compound gear forging molding press ram that finishes.During the press ram down stroke; Forging demoulding discharger main part (25) depressed cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) are fitted with the two-way thrust pressing plate of bearing (8) simultaneously; Make forging break away from cylindric spiral gear profile of tooth swaging die (9), and realize demoulding discharging.It should be noted that: forging demoulding discharger main part (25) need get out of the way cylindric spiral gear profile of tooth swaging die and stop rotational pin (23), so have cannelure in the upper surface of (25).
Fig. 7 is the state diagram that second stroke of forcing press accomplished the forging demoulding.The duty of its expression forging demoulding discharger main part (25) and its position relation in mould.The closed height of this state adds demoulding discharger increment (tz) for the closed height of Fig. 4.It also shows simultaneously: because under the effect of demoulding discharger steel ball (25-2); Forging demoulding discharger order about cylindric spiral gear profile of tooth swaging die (9) descending in, it also can be along with cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) rotate around forging (7-1) and lower punch (6).
Fig. 8 is a compound gear forging demoulding discharger.Its job specification has the operating characteristic of one-direction thrust bearing; In driving the simultaneously descending process of cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11), do not influence cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) and rotate around forging (7-1) and lower punch (6).
" mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " its purposes is energy-saving and cost-reducing, high efficiency production compound gear; Improve the economic benefit and the social benefit of manufacturing enterprise.

Claims (6)

1. a mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear; It is characterized in that: the swaging die of cylindric spiral gear it be a cylinder helical teeth internal gear and be to fluctuate; The profile of tooth swaging die of the swaging die of cylindric spiral gear profile of tooth and conical gear is the independently part that separates separately before matched moulds; But behind matched moulds, form an one-piece parts that does not have relative motion through tooth die and circle stress alignment pin (2); Lower punch axially be fix, radially can rotate flexibly through double thrustbearing (3); The demoulding discharging of forging is the stripping force that provided by slide block down and under the effect of relatively independent annular demoulding discharger (25), and cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) integral body have been moved downward.
2. " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " according to claim 1; The swaging die of cylindric spiral gear it be a cylinder helical teeth internal gear and be to fluctuate; It is characterized in that: the cylindric spiral gear profile of tooth swaging die (9) of annular and the cylindric spiral gear profile of tooth swaging die circle stress (11) of annular stop rotational pin (23) to form a global facility through conical cylindric spiral gear profile of tooth swaging die, and it can fluctuate the swaging die of cylindric spiral gear (9) under the alternating action of active force that compresses spring (10) and press ram hitting power.
3. " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " according to claim 1; The profile of tooth swaging die of the swaging die of cylindric spiral gear profile of tooth and conical gear is the independently part that separates separately before matched moulds; But behind matched moulds, form an one-piece parts that does not have relative motion through tooth die and circle stress alignment pin (2); It is characterized in that: its endoporus of cylindric spiral gear profile of tooth swaging die (9) is that cylinder helical teeth internal gear, its cylindrical are up big and down small taper shapes; Its profile of cylindric spiral gear profile of tooth swaging die circle stress (11) is up-small and down-big cylindrical; Endoporus is up big and down small taper shape; Braking circular hole, its lower surface that its upper surface has the prevention more than 4 to rotate has being used to more than 4 to compress the circular arc slotted hole that spring is installed, and between the faying face of cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) plural limit pin hole arranged.
4. " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " according to claim 1; Lower punch (6) axially be fix, radially can rotate flexibly through double thrustbearing (3), it is characterized in that: lower punch (6) be a solid and on it in following three sections profile be that difform, upper end is that the up-small and down-big two-stage frustum of a cone, middle part is that helical teeth internal gear with cylindric spiral gear profile of tooth swaging die (9) that match and cylindric spiral gear, lower end that glade plane space is arranged are cylindrical less than the middle part.
5. " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " according to claim 1; The demoulding of forging is by the relatively independent material mould (25) that takes off cylindric spiral gear profile of tooth swaging die (9) and cylindric spiral gear profile of tooth swaging die circle stress (11) integral body to have been moved downward; It is characterized in that: relatively independent demoulding discharger (25) is the annular solid that there is annular groove a upper surface; On the groove plane through hole more than 4 is arranged; There is a flat thin annular lower surface, at annular several upper ends is arranged in the inner part is that cylindrical lower end is the through hole of hemispheric containing steel ball; Through steel ball cover plate (25-3) plurality of steel balls (25-2) is installed, annular have in the outer part more than 4 with the groove plane on the corresponding screwed hole of through hole.
6. the steel ball cover plate (25-3) of " mould one hammering becomes the post tooth helical teeth shape and the cone gear form finish forge mould of compound gear " according to claim 5; It is characterized in that: it is flat annular; There are through hole, its through hole being circle more than the center line of height, below the center line of height, being hemispherical tapped through hole is arranged in its outside in the inboard.
CN 201220226826 2012-05-21 2012-05-21 Helical cylindrical gear toothed and cone gear toothed precision forging die, forged by one hammer in one die, of compound gear Expired - Fee Related CN202621811U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433418A (en) * 2013-07-03 2013-12-11 中国农业大学 Precision forging device and method for spiral bevel gear
CN103949570A (en) * 2014-03-31 2014-07-30 苏州优金金属成型科技有限公司 Integrated gear forging stock die
CN104399940A (en) * 2014-12-13 2015-03-11 遵义金惠机械制造有限责任公司 Wedge-type compression device
CN108044324A (en) * 2017-12-17 2018-05-18 江苏威鹰机械有限公司 Automatic gearbox sun gear manufacturing process and its cold forging Extruding die

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433418A (en) * 2013-07-03 2013-12-11 中国农业大学 Precision forging device and method for spiral bevel gear
CN103949570A (en) * 2014-03-31 2014-07-30 苏州优金金属成型科技有限公司 Integrated gear forging stock die
CN103949570B (en) * 2014-03-31 2016-03-30 太仓市高泰机械有限公司 Integral type Gear Forging Stock mould
CN104399940A (en) * 2014-12-13 2015-03-11 遵义金惠机械制造有限责任公司 Wedge-type compression device
CN108044324A (en) * 2017-12-17 2018-05-18 江苏威鹰机械有限公司 Automatic gearbox sun gear manufacturing process and its cold forging Extruding die

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