CN104475636A - One-step precision forging die for ball socket type fitting of insulator and method for molding fitting by using same - Google Patents
One-step precision forging die for ball socket type fitting of insulator and method for molding fitting by using same Download PDFInfo
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- CN104475636A CN104475636A CN201410657468.8A CN201410657468A CN104475636A CN 104475636 A CN104475636 A CN 104475636A CN 201410657468 A CN201410657468 A CN 201410657468A CN 104475636 A CN104475636 A CN 104475636A
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- socket
- ball
- core
- gold utensil
- die
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
- B21K27/06—Cutting-off means; Arrangements thereof
Abstract
The invention relates to a one-step precision forging die for a ball socket type fitting of an insulator, and also relates to a method for molding the fitting by using the same. The one-step precision forging die for the ball socket type fitting of the insulator is characterized by including a left movable die base and a right movable die base, a ball socket molding loose core for molding a fitting ball socket part, and an upper punch installed on the lower end face of an upper die plate for molding a crimping hole in the crimping part of the fitting, wherein the left die core and the right die core of the left and right movable die bases are combined to form a cavity of the outer contour of the ball socket type fitting, and the crimping hole part in the outer contour of the ball socket type fitting is vertically upward; the left and right movable die bases are driven by a wedge-shaped lock structure to move synchronously to open or close the die. The one-step precision forging die for the ball socket type fitting of the insulator has the advantages that, through the matching of the upper punch, the left die core, the right die core and the ball socket molding loose core, and by improving enough die locking force through using the wedge-shaped lock structure when in forging, the one-step precision forging of the fitting crimping hole and the ball socket cavity is achieved, the machining efficiency is greatly improved, and the energy consumption is reduced.
Description
Technical field
The present invention relates to a kind of insulator ball-and-socket class gold utensil fine forging forming die, also relate to a kind of method adopting this mould molding gold utensil.
Background technology
Insulator is widely used in power system, and insulator hardware is the vitals of insulator.As shown in Figure 1, insulator ball-and-socket class gold utensil mainly comprises pressure contact portion a and socket portion b, and pressure contact portion a has for crimping fixing crimping hole with plug, and socket portion b has the hollow cavity of lateral openings for being connected with bulb.
Along with the raising of line voltage grade, the requirement of insulator hardware is also more and more higher, and traditional casting gold utensil cannot meet the electrical network demand of extra-high voltage rank, and forging class gold utensil progressively substitutes original casting technique.
In the forging process of ball-and-socket class gold utensil, method traditional is at present as follows: blanking-heating-base-rough forge-trimming-finish forge-heat treatment.
Also part is had not carry out base, such as number of patent application 201210402953.1 discloses a kind of Compound insulator ball socket gold utensil forging molding process,: primarily of selecting materials, heat, blocking, trimming and the large step composition of punch forming five, blank is swaged in advance the semi-finished product with finished product profile, semi-finished product do not have ball-and-socket inner chamber, and semi-finished dimensions is slightly less than finished size; Trimming, removes the half-finished overlap of Compound insulator ball socket gold utensil; Punch forming, adopts forging mold to be Compound insulator ball socket gold utensil finished product by the punch forming of Compound insulator ball socket gold utensil semi-finished product.
In this process engineering; rough forge processes the outline of gold utensil; but because forge pressure demand is large; the clamping mechanism of mould cannot bear this power and realize completely closed; there will be certain gap; therefore need finish forge again after excision overlap, accurate machining goes out outline and ball-and-socket portion cavity, also needs on machining apparatus, process crimping hole after last heat treatment.Whole complex technical process, need multiple devices to coordinate and carry out, the man power and material of at substantial, production efficiency is low, and energy consumption is high.
Also there is the forging mold that enough clamp forces can be provided on the market at present, such as number of patent application: 201210399578.X discloses a kind of Compound insulator ball socket gold utensil forging molding mould, its innovative point is: comprise cope match-plate pattern, punch, active mould seat, fixing die holder, lower bolster and demoulding push rod, punch is arranged on cope match-plate pattern; Left active mould seat, right active mould seat are installed respectively left core rod and right core rod, after left and right core rod matched moulds, form the die cavity placing ball-and-socket gold utensil; Fixing die holder is fixed on lower bolster, and fixing die holder center has an inner chamber, and left and right active mould seat is placed in the inner chamber of fixing die holder, and the guide frame that left active mould seat is tilted to outside with right active mould seat by upper end coordinates with fixing die holder intracavity sidewall.During compacting, ball-and-socket gold utensil blank is placed in core rod through blocking, trimming, and punch is descending, with core rod in ball-and-socket is once compressing; During the demoulding, stripping tank is jack-up upwards, core rod following left sliding seat is moved and opens to both sides, can realize the demoulding, and compacting efficiency is high, and obtained ball-and-socket gold utensil percent defective is low, substantially there is not overlap.
But also still there is certain defect in it: its structure limits, the die cavity of mould adopts horizontal, namely the axis horizontal of gold utensil is arranged, forging molding can only be carried out to the ball-and-socket position of gold utensil, crimp hole place then to need to be formed by machined, cannot one-shot forming, not only add operation, meanwhile, the consumption of steel is too increased.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of can the shaping insulator ball-and-socket class gold utensil fine forging forming die without the need to processing crimping hole of finish forge, also relate to a kind of method adopting this mould molding gold utensil.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of insulator ball-and-socket class gold utensil fine forging forming die, for a finish forge profiled insulation bulbec nest class gold utensil, this insulator ball-and-socket class gold utensil comprises socket portion and the pressure contact portion with socket portion global formation, and the end face of pressure contact portion has a crimping hole; Its innovative point is: described mould comprises a cope match-plate pattern, and the lower surface of this cope match-plate pattern is provided with one for the upper punch in shaping gold utensil pressure contact portion crimping hole; One lower bolster, this lower bolster is provided with low mold frame, low mold frame center is provided with a pair symmetrically arranged left and right die holder, described left and right die holder is separately installed with left core rod, right core rod, this is to the die cavity forming ball-and-socket class gold utensil outline after left and right core rod matched moulds, and in this ball-and-socket class gold utensil outline the position, crimping hole of gold utensil is vertically upward; One looses core for the formation of the ball-and-socket in hardware fittings ball and socket portion is shaping, and this ball-and-socket is shaping looses core to be arranged in right die holder and to be slidably matched with it and move in the horizontal direction; The arranged on left and right sides limit of described low mold frame is separately installed with folding mould oil cylinder and oil cylinder of loosing core, and piston rod and the left die holder of described folding mould oil cylinder are connected and fixed, left die holder by folding mould oil cylinder driving level to the right die holder move and realize left and right core rod matched moulds; Piston rod and shaping the loosing core of ball-and-socket of described oil cylinder of loosing core are connected and fixed, ball-and-socket is shaping loose core by loose core hydraulic oil cylinder driving level to the right core rod move the ball-and-socket forming part stretching into or shift out die cavity; Described low mold frame is also provided with and is respectively used to lock left die holder and the shaping core rod retaining mechanism of loosing core of ball-and-socket and retaining mechanism of loosing core when punch forming.
Preferably, described core rod retaining mechanism is specially: described low mold frame is being provided with left locking cylinder perpendicular to the front side edge in matched moulds direction or back side edge, the piston rod end of this left locking cylinder is wedge structure, and the piston rod of described left locking cylinder can stretch into left die holder rear after matched moulds; The rear end of left die holder is the inclined-plane that can coordinate with this wedge structure.
Preferably, described retaining mechanism of loosing core is specially: described low mold frame is being provided with right locking cylinder perpendicular to the front side edge in matched moulds direction or back side edge, the piston rod end of this right locking cylinder is wedge structure, and the piston rod of described right locking cylinder can stretch into the shaping rear of loosing core of ball-and-socket after the ball-and-socket forming part of the shaping embedding die cavity of loosing core of ball-and-socket; The shaping rear end of loosing core of ball-and-socket is the inclined-plane that can coordinate with this wedge structure.
A kind of method adopting an above-mentioned insulator ball-and-socket class gold utensil fine forging forming die shaping ball-and-socket class gold utensil is also provided, its innovative point is: step S1: first carry out blanking according to the specification of gold utensil, specifically calculate raw material according to Compound insulator ball socket gold utensil finished size volume required, be converted into weight by material density, the round steel as raw material is blocked the blank obtaining corresponding weight; Step S2: heat raw material, so that next procedure forge hot, is specially and adopts 45# round steel as blank heating, adopt intermediate frequency heating to 1050-1100 DEG C; Step S3: finish forge operation, core rod retaining mechanism is utilized and the locking tight left die holder of mechanism lock and ball-and-socket is shaping looses core of loosing core after mould matched moulds, round steel after heating is directly placed in insulator ball-and-socket class gold utensil fine forging forming die, blank is filled type and enters in die cavity by the upper punch descending extruding to blank completely, for socket arrangement top has the ball-and-socket class gold utensil in crimping hole bottom directly forging; During punching press, punching press FREQUENCY CONTROL is at 18-24 beat/min; Step S4: finally shaping to finish forge ball-and-socket class gold utensil is heat-treated.
The invention has the advantages that: in the present invention, when forging molding, upper punch is used for the crimping hole of shaping gold utensil, but not ball-and-socket part, ball-and-socket part is then by being arranged in the shaping realization of loosing core of ball-and-socket of die cavity after left core rod, right core rod matched moulds, clamp force enough when simultaneously utilizing wedge lock structure to provide forging, avoid occurring overlap, and then realize gold utensil crimping hole, ball-and-socket cavity a finish forge shaping, reduce the outfit of operation and equipment, substantially increase working (machining) efficiency, reduce the consumption of the energy.
Accompanying drawing explanation
fig. 1 is insulator ball-and-socket class hardware fitting structure schematic diagram.
Fig. 2 is insulator ball-and-socket class gold utensil fine forging forming die structural representation in the present invention.
Fig. 3 is insulator ball-and-socket class gold utensil fine forging forming die top view in the present invention.
Detailed description of the invention
The method that in the present invention, finish forge is shaping is as follows: (for 210KN direct current ball-and-socket gold utensil: qualified 210KN direct current ball-and-socket gold utensil appearance and size is: axial length 204mm, socket portion outline diameter of phi 84mm, socket portion inner chamber maximum outside diameter Φ 51mm, minimum diameter Φ 27.5mm; Pressure contact portion body outer diameter Φ 36mm, internal diameter Φ 24mm.
Step S1: first carry out blanking according to the specification of gold utensil, specifically calculates raw material according to Compound insulator ball socket gold utensil finished size volume required, is converted into weight, the round steel as raw material is blocked the blank obtaining corresponding weight by material density.In the present embodiment, raw material choose 45# steel, density, at about 7.85g/mm3, selects the 45# round steel of ￠ 50mm*155mm as blank.
Step S2: heat raw material, so that next procedure forge hot, is specially: using the 45# round steel of ￠ 50mm*155mm as blank heating, adopts intermediate frequency heating to 1050-1100 DEG C.
Step S3: finish forge, is directly placed in a fine forging forming die of the present invention by the round steel after heating, and the mould structure that the present invention adopts as shown in Figure 2,3, comprising:
One cope match-plate pattern 1, the lower surface of this cope match-plate pattern 1 is provided with one for the upper punch 2 in shaping gold utensil pressure contact portion crimping hole;
One lower bolster 3, this lower bolster 3 is provided with low mold frame 4, low mold frame 4 center is provided with a pair symmetrically arranged left die holder 5, right die holder 6, wherein left die holder 5 is movable, right die holder 6 is fixed, left die holder 5, right die holder 6 are separately installed with left core rod 7, right core rod 8, and this is to the die cavity forming ball-and-socket class gold utensil outline after left core rod 7, right core rod 8 matched moulds, and in this ball-and-socket class gold utensil outline the position, crimping hole of gold utensil is vertically upward.
One looses core 9 for the formation of the ball-and-socket in hardware fittings ball and socket portion is shaping, and this ball-and-socket is shaping looses core and 9 to be arranged in right die holder 6 and to be slidably matched with it and move in the horizontal direction.
The arranged on left and right sides limit of low mold frame 4 is separately installed with folding mould oil cylinder 10 and oil cylinder 11 of loosing core, piston rod and the left die holder 5 of folding mould oil cylinder 10 are connected and fixed, left die holder 5 by folding mould oil cylinder 10 driving level to the right die holder 6 move and realize left core rod 7, right core rod 8 matched moulds; The loose core piston rod of oil cylinder 11 and shaping the loosing core of ball-and-socket 9 is connected and fixed, ball-and-socket is shaping loose core 9 by loose core oil cylinder 11 driving level to the right core rod 8 move the ball-and-socket forming part stretching into or shift out die cavity.
Low mold frame 4 is also provided be respectively used to lock when punch forming left die holder 5 and ball-and-socket shaping loose core 9 core rod retaining mechanism and retaining mechanism of loosing core.
Core rod retaining mechanism is specially: low mold frame 4 is being provided with left locking cylinder 12 perpendicular to the front side edge in matched moulds direction or back side edge, piston rod 121 end of this left locking cylinder 12 is wedge structure, and the piston rod of left locking cylinder 12 can stretch into left die holder 5 rear after matched moulds; The rear end of left die holder 5 is the inclined-plane that can coordinate with this wedge structure.
Retaining mechanism of loosing core is specially: low mold frame 4 is being provided with right locking cylinder 13 perpendicular to the front side edge in matched moulds direction or back side edge, piston rod 131 end of this right locking cylinder 13 is wedge structure, and the piston rod of right locking cylinder 13 can stretch into shaping 9 rears of loosing core of ball-and-socket after the ball-and-socket forming part of the shaping embedding die cavity of loosing core of ball-and-socket; Ball-and-socket is shaping loose core 9 rear end be the inclined-plane that can coordinate with this wedge structure.
During finish forge, forging equipment factory adopts the hydraulic press of 400T or forcing press, die cylinder reach promote left die holder and on left core rod to the right core rod move and realize matched moulds;
Hydraulic oil cylinder driving of loosing core ball-and-socket is shaping loose core level to the right core rod move and then stretch into the shaping position of ball-and-socket of die cavity;
The action of core rod retaining mechanism, the piston rod of locking cylinder stretches into left die holder rear, and utilizes wedge structure to coordinate with the inclined-plane of left die holder rear end, and the left core rod on left die holder is pressed to right core rod;
Meanwhile, locking mechanism action of loosing core, the piston rod of oil cylinder of loosing core stretches into the shaping rear of loosing core of ball-and-socket, and utilizes the inclined-plane of the shaping rear end of loosing core of wedge structure and ball-and-socket to coordinate, by shaping for ball-and-socket loose core spacing in right core rod;
Put into blank, the slide block of lathe drive lower bolster and the upper punch on it descending, the drawing velocity of hydraulic press controls at 18-24 beat/min.Utilize upper punch to the extruding of blank, blank is filled completely type and enter in die cavity, realize a finish forge shaping.
Step S4: finally shaping to finish forge ball-and-socket class gold utensil is heat-treated.
Claims (4)
1. insulator ball-and-socket class gold utensil fine forging forming die, for a finish forge profiled insulation bulbec nest class gold utensil, this insulator ball-and-socket class gold utensil comprises socket portion and the pressure contact portion with socket portion global formation, and the end face of pressure contact portion has a crimping hole; It is characterized in that: described mould comprises
One cope match-plate pattern, the lower surface of this cope match-plate pattern is provided with one for the upper punch in shaping gold utensil pressure contact portion crimping hole;
One lower bolster, this lower bolster is provided with low mold frame, low mold frame center is provided with a pair symmetrically arranged left and right die holder, described left and right die holder is separately installed with left core rod, right core rod, this is to the die cavity forming ball-and-socket class gold utensil outline after left and right core rod matched moulds, and in this ball-and-socket class gold utensil outline the position, crimping hole of gold utensil is vertically upward;
One looses core for the formation of the ball-and-socket in hardware fittings ball and socket portion is shaping, and this ball-and-socket is shaping looses core to be arranged in right die holder and to be slidably matched with it and move in the horizontal direction;
The arranged on left and right sides limit of described low mold frame is separately installed with folding mould oil cylinder and oil cylinder of loosing core, and piston rod and the left die holder of described folding mould oil cylinder are connected and fixed, left die holder by folding mould oil cylinder driving level to the right die holder move and realize left and right core rod matched moulds; Piston rod and shaping the loosing core of ball-and-socket of described oil cylinder of loosing core are connected and fixed, ball-and-socket is shaping loose core by loose core hydraulic oil cylinder driving level to the right core rod move the ball-and-socket forming part stretching into or shift out die cavity;
Described low mold frame is also provided with and is respectively used to lock left die holder and the shaping core rod retaining mechanism of loosing core of ball-and-socket and retaining mechanism of loosing core when punch forming.
2. insulator ball-and-socket class gold utensil according to claim 1 fine forging forming die, is characterized in that described core rod retaining mechanism is specially:
Described low mold frame is being provided with left locking cylinder perpendicular to the front side edge in matched moulds direction or back side edge, and the piston rod end of this left locking cylinder is wedge structure, and the piston rod of described left locking cylinder can stretch into left die holder rear after matched moulds; The rear end of left die holder is the inclined-plane that can coordinate with this wedge structure.
3. insulator ball-and-socket class gold utensil according to claim 1 fine forging forming die, retaining mechanism of loosing core described in it is characterized in that is specially:
Described low mold frame is being provided with right locking cylinder perpendicular to the front side edge in matched moulds direction or back side edge, the piston rod end of this right locking cylinder is wedge structure, and the piston rod of described right locking cylinder can stretch into the shaping rear of loosing core of ball-and-socket after the ball-and-socket forming part of the shaping embedding die cavity of loosing core of ball-and-socket; The shaping rear end of loosing core of ball-and-socket is the inclined-plane that can coordinate with this wedge structure.
4. adopt a method for an above-mentioned insulator ball-and-socket class gold utensil fine forging forming die shaping ball-and-socket class gold utensil, it is characterized in that:
Step S1: first carry out blanking according to the specification of gold utensil, specifically calculates raw material according to Compound insulator ball socket gold utensil finished size volume required, is converted into weight, the round steel as raw material is blocked the blank obtaining corresponding weight by material density;
Step S2: heat raw material, so that next procedure forge hot, is specially and adopts 45# round steel as blank heating, adopt intermediate frequency heating to 1050-1100 DEG C;
Step S3: finish forge operation, core rod retaining mechanism is utilized and the locking tight left die holder of mechanism lock and ball-and-socket is shaping looses core of loosing core after mould matched moulds, round steel after heating is directly placed in insulator ball-and-socket class gold utensil fine forging forming die, blank is filled type and enters in die cavity by the upper punch descending extruding to blank completely, for socket arrangement top has the ball-and-socket class gold utensil in crimping hole bottom directly forging; During punching press, punching press FREQUENCY CONTROL is at 18-24 beat/min;
Step S4: finally shaping to finish forge ball-and-socket class gold utensil is heat-treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657468.8A CN104475636B (en) | 2014-11-19 | 2014-11-19 | Insulator ball-and-socket class gold utensil is essence forging molding mould and the method for this mould molding gold utensil once |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657468.8A CN104475636B (en) | 2014-11-19 | 2014-11-19 | Insulator ball-and-socket class gold utensil is essence forging molding mould and the method for this mould molding gold utensil once |
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| CN104475636A true CN104475636A (en) | 2015-04-01 |
| CN104475636B CN104475636B (en) | 2016-06-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537485A (en) * | 2016-01-14 | 2016-05-04 | 上海久进精密锻造有限公司 | Steering shaft forming die and forming technology |
| CN109732026A (en) * | 2019-01-22 | 2019-05-10 | 武汉重工铸锻有限责任公司 | Mold and usage for local die forging both ends abnormity connecting rod |
| CN110509063A (en) * | 2019-09-24 | 2019-11-29 | 如皋市大生线路器材有限公司 | A kind of dual-purpose automatic metalworking production line of ball-and-socket bulb forging |
| CN110722085A (en) * | 2019-11-05 | 2020-01-24 | 如皋市大生线路器材有限公司 | Forming die for ball socket blank |
| CN110976730A (en) * | 2019-12-26 | 2020-04-10 | 如皋市林达线路金具有限公司 | One-step forging forming process for inner cavity of ball socket hardware fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105537485A (en) * | 2016-01-14 | 2016-05-04 | 上海久进精密锻造有限公司 | Steering shaft forming die and forming technology |
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| CN110722085A (en) * | 2019-11-05 | 2020-01-24 | 如皋市大生线路器材有限公司 | Forming die for ball socket blank |
| CN110976730A (en) * | 2019-12-26 | 2020-04-10 | 如皋市林达线路金具有限公司 | One-step forging forming process for inner cavity of ball socket hardware fitting |
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| CN104475636B (en) | 2016-06-08 |
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