CN1047548C - Forming method for cuboid seamless steel mould - Google Patents
Forming method for cuboid seamless steel mould Download PDFInfo
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- CN1047548C CN1047548C CN92113413A CN92113413A CN1047548C CN 1047548 C CN1047548 C CN 1047548C CN 92113413 A CN92113413 A CN 92113413A CN 92113413 A CN92113413 A CN 92113413A CN 1047548 C CN1047548 C CN 1047548C
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Abstract
The present invention relates to a method for forming longitudinal cuboid seamless steel moulds. Desired ridge designs are engraved on an outer circumferential surface of a male mould of a solid longitudinal cuboid body in advance, the engraved male mould is hardened to obtain hardness, the circumference of the male mould is sheathed with a hollow female mould which is not hardened, hydraulic pressure is exerted on the outer circumference of the female mould, the ridge designs on the male moulds are pushed, pulled and compressed by the hydraulic pressure for several times, the ridge designs are successively engraved in the inner circumferential surface of the female mould until the complete forming is completed, the male mould is annealed, penetrating holes are drilled in the male mould, at least three longitudinal gaps are outwards cut on the hole canals, and finally, the male mould with the gaps and the female mould are thermally treated and are placed in water at an ordinary temperature, gaps in the male mould deforms and cracks into fragments, and a longitudinal cuboid seamless steel mould, the inner circumferential wall of which is provided with ridge designs, is formed.
Description
What the present invention relates to is a kind of forming method of cuboid seamless steel mould, refers to a kind of forming method that is specially adapted to the production of golf club cover with seamless punching block especially.
As is generally known, the moulding of the plastic cement finished product of general solid-cone cylindrical shell or cylinder, all be with on two, counterdie is split form removal, if hollow-cone cylindrical shell or cylinder, when moulding, on two, following intermode also need be provided with a pin rod that runs through die cavity, shown in Fig. 8 B, one hollow cylindrical body H, its hollow bulb h when moulding, tie up to Fig. 8 A on, counterdie M1, form a die cavity R between M2, one pin rod P is set again in die cavity, formed space between die cavity R and pin rod is in order to after injecting plastic material from sprue S, the hollow cylindrical body H of ejection formation shown in Fig. 8 B, by Fig. 8 A as can be known, the thickness stool and urine of hollow cylinder H is depended on the thickness of the diameter of pin rod P, but in general, the diameter dimension of pin rod and the size of its length are often disproportionate, cause under the powerful pressure that shoots material that causes in the die cavity that shoots material, make the bending shape of pin rod P generation shown in Fig. 8 A dotted line,, still unavoidably make pin rod P produce bent the change though inlet S is located at non-central location as far as possible.So, the centre bore that not only manufactures a finished product is bent partially, and the variable thickness of finished product, and is very big to the quality of finished influence; Consult Fig. 8 C again, forming process with the golf club handle cover describes, basically, golf club handle cover system is the hollow-cone cylindrical shell, its forming method also is on adopting, the method of following two-half die is carried out injection moulding, then from middle form removal, so grip early-products that Fig. 8 C is presented, seam crossing L at mould, L1, L2 forms many burr material T1～T5, because this becomes strain with rubber raw materials injection moulding, so its burr material is remarkable especially, rubber is quite good as the feel and the on-slip of grip, be received by the market, but the form removal seam crossing of this early-products and burr portion such as all must through repeatedly careful grind smoothing could complete obiteration, otherwise in the golf utensil market of quality goods, can't be accepted by market.This shows, the modification operation cost of labor of processing behind the golf grip is processed the required worker and the cost of material before far surpassing it, present state-of-the-art supply country Japan adopts this processing method, thereby cause the price of golf clubs can not to be in any more, make the general common people desire to be advanced into the golf field and step back.Moreover, on the golf club handle for ask its practical and attractive in appearance for the purpose of, the handle outer surface is all carved and is established many floral designs, this decorative pattern and pattern are often carrying out surface grinding and are modifying the destruction of causing in the operation process more or less, so that fraction defective is quite high, thereby high-quality handle is difficult to make all the time.
By last explanation as can be known, if desire is made a kind of high-quality handle, more feasible is to transform into seamless lengthwise body in order to the punching block of moulding grip into, and the above-mentioned shortcoming that can will have the grip on decorative pattern surface is cleared off.
Yet, desire is made seamless form removal mode with a longitudinal shaping steel die, desire not only one long for the 270mm aperture be very difficult only for establishing the quarter of carrying out discontinuous but also irregular ridge design or pattern in the pipe of 14.5mm, also can only carry out on to the plane with the imitated machine of present state-of-the-art CNC lathe on the plane, though establish the quarter of the rifle in the gun barrel is to carry out in gun barrel, but rifle is the simple change curve of a kind of rule of what, and can extend to the other end continuously by an end, the method system that establishes its quarter stretches in the gun barrel in order to fixed cutting tool, cutter is advanced with certain speed, and make gun barrel can reach the institute desire carving the purpose of establishing rifle with the relative rotation of certain speed.
Yet decorative pattern that golf club handle puts and pattern are noncontinuity none set pattern again, thereby the forming method of rifle can't directly be used the what golf club handle and puts.
In other words, carve operation on the steel in little longitudinal body opening road, aperture, all can't reach according to present engraving and mould molding technical level and equipment, as seen its technology is the mould manufacturing method of a kind of highly difficult intention of what.
Main purpose of the present invention is to provide a kind of forming method of hollow cuboid seamless steel mould, finished product burr after the moulding are eliminated fully, and make formed decorative pattern of finished product outer surface or pattern aligning linking very along sliding and correct, make the moulding of the seamless finished product of quality goods become possibility.
Another object of the present invention is to provide a kind of forming method of hollow cuboid seamless steel mould, the back processing operations such as polishing modification that make this method make the finished product of mould are save fully, not only the decorative pattern of finished product outer surface, lines, corner angle are clear and definite and graceful, and a large amount of costs of labor have been saved, so the quality of the finished product that the present invention is made significantly improves, and can also reduce production costs.
The present invention for achieving the above object, its concrete technical scheme comprises:
1. the solid male model outer surface of a lengthwise body is carved to establish to be heated again behind the needed decorative pattern and implemented hardness and handle, make it have hardness;
2. the hollow lengthwise body master mold that an internal diameter size is suitable with the male model external diameter is inserted in the male model periphery;
3. the feature die body that will overlap postpone is applied hydraulic action by the master mold outer surface, and the above-mentioned decorative pattern that the male model outer surface is carved establish is carved to establish and taken shape on the master mold inner peripheral surface;
The employed material of this male model can be any easy cracked high-carbon steel steel, and master mold adopts heat resisting steel or the medium carbon steel not easily broken than the tool toughness;
4. male model is heated to the temperature that to anneal, makes it cool off naturally then, after the cooling whole the annealed solid male model of lengthwise body given whole and run through the car hole;
5. the male model endoporus that will finish through the car hole is bestowed the longitudinal slot of cutting more than at least three, and the degree of depth in these slits should be slightly less than the thickness of male model Che Konghou;
6. will cut the male model finished in the slit again through the hardness heat treated; heat treatment is reinjected in the normal-temperature water; make the male model acceleration rupture and make master mold obtain the hardness processing; make and be out of shape voluntarily after the slit heat-treated that is cut part and split into many fragments; so the residue of male model is removed in master mold; then the master mold inner peripheral surface of handling through hardness is that male model is carved the decorative pattern of establishing and just displayed, and then here taking shape in of seamless master mold accomplishes.
About 60～65 degree HRC of described male model hardness.Described the master mold outer surface is applied hydraulic action is to adopt oil pressure to push the mould eyelet of mode by setting, and borrows the bore push-pull fashion of dwindling one by one of mould eyelet to be located in the master mold on the perimeter surface to reach the decorative pattern of male model outer surface carved.Described annealing temperature is about 780 ℃.Article three, in the longitudinal slot more than, have two longitudinal slot systems at least mutually by being its feature.Heat treatment temperature is higher than more than 860 ℃.
Above-mentioned and other purpose of the present invention, characteristics will be further described in conjunction with following accompanying drawing, wherein:
Fig. 1 is the employed male model schematic diagram of a preferred embodiment of the present invention;
The hollow master mold schematic diagram that Fig. 2 matches for the present invention's male model shown in Figure 1;
Fig. 3 is the cross-sectional view after male model, master mold are nested together, and it still is the schematic diagram that the master mold periphery applies hydraulic pressure processing operation;
Fig. 4 A-4C applies the preferred embodiment procedure declaration schematic diagram that hydraulic pressure processing is handled by outer peripheral face after male model of the present invention, master mold are nested together;
Fig. 5 is that male model periphery decorative pattern was carved the schematic diagram of being located at the master mold inner peripheral surface after male model of the present invention, master mold applied hydraulic pressure processing and finish dealing with;
Fig. 6 is the schematic diagram that male model of the present invention is implemented center Che Konghou;
Fig. 7 A-7C implements the schematic diagram that interior hole saw is established the different embodiment of three roads or slit, four roads ditch for male model of the present invention;
Fig. 7 D is the after heat treatment destroyed schematic diagram of male model of the present invention;
Fig. 8 A is the mould schematic diagram of general cylinder finished product forming method;
Fig. 8 B is the cutaway view of the finished product of Fig. 8 A;
Fig. 8 C is the first finished product appearing diagram of golf club cover in the prior art.
The forming method of cuboid seamless steel mould of the present invention, consist essentially of a kind of interior perimeter surface and carve the forming method of the jointless structure punching block of the lengthwise body of establishing discontinuous irregular ridge design, this lengthwise body comprises cylinder, elliptical cylinder, conic tube, triangle cylindrical shell, tetragonal cylindrical shell and other polygonal cylindrical shells again.Now for for the purpose of the simplified illustration, only the forming method with the seamless punching block of cylinder is the example explanation.
The present invention is in practical application, and male model system adopts high-carbon steel, and easily cracked steel, master mold then can adopt the heat-resisting steels that is difficult for breaking than the tool toughness.
Now the major technique means with the seamless mould of the inventive method moulding cylinder are described as follows:
A. earlier the solid steel male model of cylinder outer surface is carved to establish to be heated again behind the needed decorative pattern and carried out cure process, make it have the hardness of institute's phase;
B. the male model that will carve after establishing decorative pattern and finishing inserts in its internal diameter hollow cylindrical body master mold identical or suitable with the male model external diameter;
C. will be nested with male model, the master mold integral body finished and apply hydraulic action from the master mold outer surface, the ridge design that makes the male model outer surface have suitable hardness is carved on the master mold inner peripheral surface of being located at the non-hardened processing;
D. male model, master mold integral body are heated to annealing temperature, make it the nature cooling then, make male model be annealed to original hardness, again male model is run through the car hole along its length, make male model in be formed centrally consistent reach through hole, its pore size is a benchmark with the cutting operation that can carry out next step;
E. the male model inner duct that the car hole is finished cuts out slit longitudinally, at least three roads outwardly along warp-wise, and the degree of depth of its cutting should be less than the thickness of male model Che Konghou;
F. will cut the male model of finishing in the slit and after heat treated, put into normal-temperature water again with master mold, the male model slotted section material that is cut is out of shape voluntarily and splits into many fragments, so with the residue of male model after the master mold endoporus is removed, the master mold inner peripheral surface of handling through hardness is that male model is carved the decorative pattern of establishing and just displayed, then one seamless in the rigidity master mold operations for forming of Guan Keshe decorative pattern finish.
For making method of the present invention obtain further to understand, intend conjunction with figs. and illustrate with regard to a preferred embodiment of the present invention, be simplified illustration, the shaping steel die of intending with golf club handle cover (hereinafter to be referred as grip) is example explanation as back:
Get solid circular cone barred body steel suitable as male model 10 with the grip external diameter, as shown in Figure 1, the employed material of this male model can be any easy cracked high-carbon steel steel, SK3 for example, and at the outer surface of male model 10 protuberance 12 of the recessed lines 11 of engraving and the alternate setting of each lines in advance, be heated again and carry out general cure process, make it to have the hardness of about 60～65 degree HRC; Get not easily broken than a tool toughness as shown in Figure 2 heat resisting steel or a medium carbon steel then, for example the hollow cone cylindrical shell 20 of 45C steel is as master mold, system is by making without heat treated medium carbon steel 45C steel, and the external diameter of its internal diameter and male model 10 is suitable, and the inside of male model 10 being inserted in master mold 20;
Male model with cover postpone, master mold is implemented comprehensive and uniform hydraulic action from the master mold outer peripheral face, make the ridge design 11 of the male model outer surface of handling through hardness, be located at for 12 quarters on the inner peripheral surface of master mold 20, in the present invention one desirable embodiment, shown in Fig. 3 and 4, applying of its hydraulic action is that eye mould 30A → 30C that what master mold outer peripheral face system successively decreases by a bore applies hydraulic pressure propelling movement directed force F 1 → F3 from top to bottom, the external diameter of master mold 20 is dwindled gradually by A → C, the propelling movement of hydraulic pressure is exerted pressure and is made the decorative pattern on the male model 10 purely and simply carve on the inner peripheral surface of being located at master mold 20, as shown in Figure 5 whereby:
Inferior male model, master mold integral body are heated, especially the steel characteristics at male model 10 imposes the annealing operation, be about to it and be heated to about about 780 ℃ of annealing temperature, make it cool off naturally again and make it to be annealed to original hardness, and run through car hole 13 to what male model 10 imposed whole longitudinally, as shown in Figure 6;
The male model that finish in the car hole carries out the cutting operation of the slit 14A～14D of at least three road longitudinallies (from inside to outside) in the duct 13 again, as shown in Figure 7, the degree of depth of its cutting should be less than the thickness of male model Che Konghou, carves and establish the decorative pattern of finishing in order to avoid cutting operation injures the master mold inner peripheral surface;
The last male model of again cutting being finished, master mold integral body are together through putting into normal-temperature water again after the heat treatment more than 860 ℃, this moment was because the male model inner hole wall had cut multiple tracks slit 14A～14D already, drop in the normal-temperature water rapidly again after borrowing heating, can make master mold implement cure process first and make it to have hardness, second can make in the easily cracked high-carbon steel male model endoporus and quicken to split through adding cutting slit part, so the place, adjacent boundary at slit 14A～14D and male model and master mold produces slight crack 15-15, and the tight engomphosis relation that makes male model outer peripheral face and master mold inner peripheral surface by free fully.
Here need to prove, in a preferred embodiment of the present invention, this slit 14A～14D is distributed in the principle of male model endoporus, in the slit in system at least three roads, it is quite approaching that twice are arranged, 14B and 14C as Fig. 7 A, 14A and 14B as Fig. 7 B, as 14A among Fig. 7 C and 14B, shown in 14C and the 14D etc., by Fig. 7 D as can be known, the slit that these twice are close utilizes the characteristic of high-carbon steel to make it more easily to break after heat treatment, and is easy to drop and fragmentates, when shown in Fig. 7 A two drop near the short arc fragment between slit 14B and 14C after, then the long arc shape sheet between 14A and 14B and 14C just can take out easily, so male model 10 just can be destroyed fully, is carved the integrality of establishing decorative pattern and saved from damage by the made master mold inner peripheral surface of tool toughness heat resisting steel.
The above embodiment of the present invention is only for illustrating, be not in this with limitation for molding of the present invention, all any changes of under the intention of the above-mentioned major technique means of the present invention, being done, modification, increase and decrease step or etc. the replacement or the changer of effect technological means, all should list in the claim scope attached under the present invention.
Claims (6)
1. the forming method of a cuboid seamless steel mould, this method comprises: a. is carved the solid male model outer surface of a lengthwise body to establish to be heated behind the needed decorative pattern again and implements hardness and handle, and makes it have hardness; B. an internal diameter size is suitable with male model external diameter hollow lengthwise body master mold is inserted in the male model periphery; The feature die body that c. will overlap postpone is applied hydraulic action by the master mold outer surface, and the above-mentioned decorative pattern that the male model outer surface is carved establish is carved to establish and taken shape on the master mold inner peripheral surface; It is characterized in that, the employed material of described this male model can be any easy cracked high-carbon steel steel, and master mold adopts heat resisting steel or the medium carbon steel not easily broken than the tool toughness, d. male model is heated to annealing temperature, allow it cool off naturally then, after the cooling whole annealed male model given whole and run through the car hole; E. the male model endoporus that will finish through the car hole is bestowed the longitudinal slot of cutting more than at least three, and the degree of depth in these slits should be slightly less than the thickness of male model Che Konghou; F. will cut the male model finished in the slit again through the hardness heat treated; in the normal-temperature water of reinjecting after the heat treatment; make the male model acceleration rupture and make master mold obtain the hardness processing; be out of shape voluntarily and split into many fragments after making the slit heat-treated that is cut part, at last the residue of male model is removed in master mold.
2. the forming method of cuboid seamless steel mould as claimed in claim 1 is characterized by, should about 60～65 degree HRC of the described male model hardness of (a) step.
3. the forming method of cuboid seamless steel mould as claimed in claim 1, it is characterized by, should (c) step described the master mold outer surface is applied hydraulic action be to adopt oil pressure to push the mould eyelet of mode by setting, and borrows the bore push-pull fashion of dwindling one by one of mould eyelet to establish in the what master mold on the perimeter surface to reach the decorative pattern of male model outer surface carved.
4. the forming method of cuboid seamless steel mould as claimed in claim 1 is characterized by,
Should the described annealing temperature of (d) step be about 780 ℃.
5. the forming method of cuboid seamless steel mould as claimed in claim 1 is characterized by, and is somebody's turn to do in the described longitudinal slot more than three of (e) step, has two longitudinal slots systems at least mutually near being its features.
6. the forming method of cuboid seamless steel mould as claimed in claim 1 is characterized by, and should the described heat treatment temperature of (f) step be higher than more than 860 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92113413A CN1047548C (en) | 1992-11-23 | 1992-11-23 | Forming method for cuboid seamless steel mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92113413A CN1047548C (en) | 1992-11-23 | 1992-11-23 | Forming method for cuboid seamless steel mould |
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| Publication Number | Publication Date |
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| CN1087301A CN1087301A (en) | 1994-06-01 |
| CN1047548C true CN1047548C (en) | 1999-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN92113413A Expired - Fee Related CN1047548C (en) | 1992-11-23 | 1992-11-23 | Forming method for cuboid seamless steel mould |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101176905B (en) * | 2003-12-22 | 2011-11-09 | 本田技研工业株式会社 | Method of forming member, valve guide and method of forming the same and method of forming tubular member |
| CN101670511B (en) * | 2009-09-23 | 2012-07-04 | 上海大屯能源股份有限公司 | Method for repairing old cast roll bearing chock |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2983366A (en) * | 1956-04-25 | 1961-05-09 | Trefileries Et Laminoirs De Pr | Hydraulic devices for removing tubes drawn on a long mandrel |
| US3422518A (en) * | 1967-10-20 | 1969-01-21 | Valley Metallurg Processing | Method of reforming tubular metal blanks into inner-fin tubes |
| US3646799A (en) * | 1969-12-15 | 1972-03-07 | Kabel Und Metalwerke Gutchoffn | Method of making molds for continuous casting machines |
| US4270690A (en) * | 1979-09-10 | 1981-06-02 | Combustion Engineering, Inc. | Method of forming variably rifled tubes |
| US5018378A (en) * | 1986-05-02 | 1991-05-28 | Km-Kabelmetal Ag | Mold making |
-
1992
- 1992-11-23 CN CN92113413A patent/CN1047548C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2983366A (en) * | 1956-04-25 | 1961-05-09 | Trefileries Et Laminoirs De Pr | Hydraulic devices for removing tubes drawn on a long mandrel |
| US3422518A (en) * | 1967-10-20 | 1969-01-21 | Valley Metallurg Processing | Method of reforming tubular metal blanks into inner-fin tubes |
| US3646799A (en) * | 1969-12-15 | 1972-03-07 | Kabel Und Metalwerke Gutchoffn | Method of making molds for continuous casting machines |
| US4270690A (en) * | 1979-09-10 | 1981-06-02 | Combustion Engineering, Inc. | Method of forming variably rifled tubes |
| US5018378A (en) * | 1986-05-02 | 1991-05-28 | Km-Kabelmetal Ag | Mold making |
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| CN1087301A (en) | 1994-06-01 |
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