CN114653850A - Shell nut closing-in die and closing-in method - Google Patents
Shell nut closing-in die and closing-in method Download PDFInfo
- Publication number
- CN114653850A CN114653850A CN202210172716.4A CN202210172716A CN114653850A CN 114653850 A CN114653850 A CN 114653850A CN 202210172716 A CN202210172716 A CN 202210172716A CN 114653850 A CN114653850 A CN 114653850A
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- CN
- China
- Prior art keywords
- closing
- base
- upper cover
- nut
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/24—Making other particular articles nuts or like thread-engaging members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a shell nut closing-in die which comprises a base and an upper cover which are symmetrical up and down, wherein a cavity is arranged in the middle of the base and the upper cover, two ends of the cavity are arc-shaped closing-in platforms, the arc diameter of the closing-in platform is consistent with the processing requirement size of a shell nut, supporting screw rods with two ends screwed in the shell nut are accommodated in the cavity, parts to be processed of the two shell nuts are placed on the closing-in platforms at the two ends, and a guide pin extending in the up-and-down direction is arranged between the base and the upper cover. The invention has simple structure, strong adaptability, small volume, low cost, convenient operation and high efficiency, and can close two nuts at one time.
Description
Technical Field
The invention relates to the technical field of processing of a sleeve nut, in particular to a sleeve nut closing-up die and a closing-up method.
Background
In the field of aviation, the outer sleeve nut is a common part matched with the joint and the nozzle in a pneumatic pipeline system and a hydraulic pipeline system, and after the outer sleeve nut is closed, the outer sleeve nut needs to accord with a corresponding destructive pressure test and can ensure flexible rotation. At present, two common closing-up modes are adopted for the outer nut, one mode is that the outer nut is usually closed up manually by a special tool through a common lathe, and the closing-up mode requires that an operator has certain processing experience, the closing-up quality is unstable, and the closing-up efficiency is low; and the other method adopts special closing-in equipment and a special closing-in tool to close the outer sleeve nut, and the method has higher cost.
Disclosure of Invention
The invention solves the technical problems of low closing-in efficiency and unstable quality of the existing outer sleeve nut, and provides an efficient outer sleeve nut closing-in mold and a closing-in method for closing in the outer sleeve nut.
The technical scheme adopted by the invention is that the closing-in die for the outer sleeve nut comprises a base and an upper cover which are symmetrical up and down, wherein a cavity is arranged in the middle of the base and the upper cover, two ends of the cavity are arc closing-in platforms, the arc diameter of the closing-in platform is consistent with the processing requirement size of the outer sleeve nut, supporting screw rods with two ends screwed in the outer sleeve nut are accommodated in the cavity, parts to be processed of the two outer sleeve nuts are placed on the closing-in platforms at the two ends, and guide pins extending in the up-down direction are further arranged between the base and the upper cover.
The two ends of the base and the upper cover are provided with baffle plates for blocking the outer nut in the closing-up platform.
The baffle is fixed on the base through screws.
The number of the guide pins is two, and the guide pins are distributed on two sides of the cavity.
The method for closing the outer sleeve nut comprises the following steps:
(1) screwing the two outer nuts into two ends of the support screw rod, and placing the outer nuts in the semicircular arc of the base through the positioning of the baffle plate;
(2) assembling the base and the upper cover together through the guide pin;
(3) putting the assembled outer sleeve nut and the closing-up tool on a workbench of a press machine, slightly contacting the press machine with an upper cover of the closing-up tool through the pre-pressing function of the press machine, then pressing the upper cover downwards, and compressing the outer sleeve nut by the closing-up platform of the upper cover and the base.
The invention has the advantages of simple structure, small volume, low cost, convenient operation and high efficiency.
Drawings
FIG. 1 is a cross-sectional view of the inventive die.
Fig. 2 is a left-side sectional view of fig. 1.
Fig. 3 is a schematic view of a cap nut.
FIG. 4 is a schematic view of a nozzle fitted with a male nut.
Fig. 5 is a schematic view of a base.
Labeled as: 1-base, 11-closing table, 2-baffle, 3-support screw, 4-guide pin, 5-inner hexagon screw, 6-outer nut and 7-upper cover.
Detailed Description
The invention will be further explained with reference to the drawings.
The invention discloses a shell nut closing-in die which comprises a base 1, a baffle 2, a supporting screw rod 3, a guide pin 4, an inner hexagon screw 5 and an upper cover 7, wherein the base 1 and the upper cover 7 are of an up-and-down symmetrical structure, a cavity is arranged in the middle of the base 1 and the upper cover 7, two ends of the cavity are arc closing-in platforms 11, two shell nuts 6 to be processed are connected through the supporting rod screw rod, the cavity is used for accommodating the supporting screw rod 3, two ends of the supporting screw rod 3 are screwed in the shell nuts 6, the arc diameter of the closing-in platforms 11 is consistent with the processing requirement size of the shell nuts 6, the parts to be processed of the two shell nuts 6 are placed on the closing-in platforms 11 at two ends, the shell nuts 6 are formed under the extrusion of the upper closing-up platform 11 and the lower closing-up platform 11, the size is ensured by the arc diameter of the closing-up platforms 11, and the guide pin 4 extending in the up-and down direction is also arranged between the base 1 and the upper cover 7.
The structure of the outer sleeve nut is shown in figure 3, the nozzle matched with the outer sleeve nut is shown in figure 5, and the inner hole is ensured after the outer sleeve nut is closed
And outer diameter
The gap is 0.2-0.8, so that the arc head of the nozzle can be clamped in the nozzle of the outer sleeve nut 6, the closing mode of the outer sleeve nut is that the outer sleeve nut is extruded inwards along the whole outer circumference to achieve higher strength, and the nozzle is placed to fall off, so that the requirement on the diameter precision of the outer circumference is low, the closing is uniform, and the pressure for closing is high. Therefore, the upper and lower circular arc-shaped, more precisely, semicircular closing-in platforms 11 are used for closing in the pipe orifice of the outer sleeve nut.
In order to limit the axial direction of the outer sleeve nut 6 and the supporting screw rod 3, two ends of the base 1 and the upper cover 7 are provided with baffle plates 2, the outer sleeve nut 6 is blocked in the closing-up table 11, and the baffle plates 2 are fixed on the base 1 through screws. Baffle 2 adopts hexagon socket head cap screw 5 to be fixed in base 1 side, simple to operate, easily dismouting.
In the processing process, the upper cover 7 is pressed downwards towards the base 1, in order to ensure that the upper cover 7 cannot slide transversely or be dislocated, guide pins 4 extending in the vertical direction are further arranged between the base 1 and the upper cover 7, the number of the guide pins 4 is two and is distributed on two sides of the cavity, and in order to ensure the strength, the number and the shape of the guide pins 4 can be adjusted properly, for example, four guide pins or wedge-shaped guide pins and the like. The power mechanism for driving the upper cover 7 to press down selects a press machine, so that the operation is convenient, and the universality is strong.
The specific processing method comprises the following steps:
(1) as shown in fig. 1, the shell nut closing-in die of the invention comprises: the base comprises a base 1, a baffle 2, a supporting screw rod 3, a guide pin 4, an inner hexagon screw 5, an outer nut 6 and an upper cover 7, wherein the base 1 and the upper cover 7 are made of 45# steel and have the hardness of HRC 35-45; the baffle plate 2 and the guide pin 4 are made of 1Cr18Ni9 Ti; 3, the supporting screw 3 is made of polytetrafluoroethylene; the material of the outer sleeve nut 6 is 30 CrMnSiA.
(2) Baffle 2 is fixed in the side of base 1 through hexagon socket head cap screw 5, and baffle 2 plays the effect of location to overcoat nut 6.
(3) The two outer nuts 9 are connected through the supporting screw rods 3, and the outer nuts are ensured to be placed in the semicircular arc-shaped closing-up table 11 of the base by adjusting the screwing-in length of the threads of the supporting screw rods 3 and the positioning of the baffle 2;
(4) the base and the upper cover 7 are assembled together by the guide pin 4;
(5) putting the assembled outer sleeve nut 6 and the closing-up tool on a workbench of a press machine, enabling the press machine to be in contact with an upper cover 7 of the closing-up tool through the pre-pressing function of the press machine, then pressing the upper cover 7 downwards, and compressing the outer sleeve nut 6 to close up through the upper cover 7 and a closing-up table 11 of the base 1.
The material was 30CrMnSiA cap nut and the press pressure was set at 28 KN. The pressure of the press may be suitably adjusted according to different materials and sizes.
According to the invention, through designing a special outer sleeve nut closing-in die, closing-in of two outer sleeve nuts is realized at one time by using a press machine. The necking tool and the necking method have the advantages of simple structure, convenience in operation, strong applicability, stable necking quality, low labor consumption and low processing cost.
Claims (5)
1. The utility model provides a shell nut binding off mould which characterized in that: including the base and the upper cover of longitudinal symmetry, base and upper cover middle part are equipped with the cavity, and the cavity both ends close up the platform for convex, and the circular arc diameter and the cap nut processing of closing up the platform require the size unanimous, contain the support screw rod that both ends have all screwed in cap nut in the cavity, and the part of waiting to process of two cap nut places at the closing up bench at both ends, still is equipped with the uide pin that the direction extends from top to bottom between base and the upper cover.
2. A shell nut necking-in die of claim 1, wherein: the two ends of the base and the upper cover are provided with baffle plates, and the outer sleeve nut is blocked in the closing-up platform.
3. A shell nut necking-in die of claim 1, wherein: the baffle is fixed on the base through screws.
4. A shell nut necking-in die of claim 1, wherein: the number of the guide pins is two, and the guide pins are distributed on two sides of the cavity.
5. A necking method using the shell nut necking die of claim 1, comprising the steps of:
(1) screwing the two outer nuts into two ends of the support screw rod, and placing the outer nuts in the semicircular arc of the base through the positioning of the baffle plate;
(2) assembling the base and the upper cover together through the guide pin;
(3) putting the assembled outer sleeve nut and the closing-up tool on a workbench of a press machine, slightly contacting the press machine with an upper cover of the closing-up tool through the pre-pressing function of the press machine, then pressing the upper cover downwards, and compressing the outer sleeve nut by the closing-up platform of the upper cover and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210172716.4A CN114653850A (en) | 2022-02-24 | 2022-02-24 | Shell nut closing-in die and closing-in method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210172716.4A CN114653850A (en) | 2022-02-24 | 2022-02-24 | Shell nut closing-in die and closing-in method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114653850A true CN114653850A (en) | 2022-06-24 |
Family
ID=82027901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210172716.4A Pending CN114653850A (en) | 2022-02-24 | 2022-02-24 | Shell nut closing-in die and closing-in method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114653850A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202571006U (en) * | 2012-04-13 | 2012-12-05 | 河南航天精工制造有限公司 | Self-locking nut necking-in mold |
| CN103240360A (en) * | 2013-05-23 | 2013-08-14 | 航天精工有限公司 | Self-locking nut mouth shrinkage device |
| CN203565694U (en) * | 2013-10-24 | 2014-04-30 | 天津钢管集团股份有限公司 | Radial die assembly for closing-in operation of steel tube |
| CN106311925A (en) * | 2016-06-27 | 2017-01-11 | 七丰精工科技股份有限公司 | Self-locking nut three-point closing die |
| CN212760807U (en) * | 2020-04-28 | 2021-03-23 | 成都迈特航空制造有限公司 | Self-locking nut closing-in die |
-
2022
- 2022-02-24 CN CN202210172716.4A patent/CN114653850A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202571006U (en) * | 2012-04-13 | 2012-12-05 | 河南航天精工制造有限公司 | Self-locking nut necking-in mold |
| CN103240360A (en) * | 2013-05-23 | 2013-08-14 | 航天精工有限公司 | Self-locking nut mouth shrinkage device |
| CN203565694U (en) * | 2013-10-24 | 2014-04-30 | 天津钢管集团股份有限公司 | Radial die assembly for closing-in operation of steel tube |
| CN106311925A (en) * | 2016-06-27 | 2017-01-11 | 七丰精工科技股份有限公司 | Self-locking nut three-point closing die |
| CN212760807U (en) * | 2020-04-28 | 2021-03-23 | 成都迈特航空制造有限公司 | Self-locking nut closing-in die |
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