CN208845544U

CN208845544U - Hexagonal plain cushion screw assemblies and its cold-heading molding mould

Info

Publication number: CN208845544U
Application number: CN201821359313.6U
Authority: CN
Inventors: 徐丁; 陈德生
Original assignee: Hunan China Airlines Fastening System Co Ltd
Current assignee: Hunan China Airlines Fastening System Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2019-05-10
Anticipated expiration: 2028-08-22

Abstract

It include hex screw, plain cushion the utility model relates to a kind of hexagonal plain cushion screw assemblies, the hex screw is successively made through cold-heading molding, heat treatment, threading, surface treatment procedure, the plain cushion after heat treatment procedure, the hex screw is inserted in front of threading process, the plain cushion is made of red copper material, and the internal diameter of the plain cushion is not more than the nominal diameter of the hex screw thread segment；It is a kind of process hex screw cold-heading molding mould include: three groups of formpistons, three groups of formers；Formpiston described in three groups and former, which respectively correspond, is installed on multi-position bolt molding machine, by the material clipping system of the molding machine by material base be displaced into three groups described between formpiston and former, contracting bar, contracting angle, outer-hexagonal head trimming for forming are successively carried out to material base.There is blow-by after solving the problems, such as assembly in the utility model, improves assembling quality；The hex screw successively contracting bar, contracting angle, outer-hexagonal head trimming cold-heading molding, have saved raw material, have kept the good mechanical property of product.

Description

Hexagonal plain cushion screw assemblies and its cold-heading molding mould

Technical field

The utility model relates to field of machining technology more particularly to a kind of hexagonal plain cushion screw assemblies and its cold-heading molding Mould.

Background technique

Common one of fastener when hexagonal plain cushion screw, including hex screw and plain cushion, in the connection of compressor and tight Gu in component, the plain cushion of exhaust noise silencing lid screw uses carbon steel material, trip blow-by is easy since carbon steel hardness is high, after assembly Phenomena such as, a kind of influence assembling quality, and existing hexagonal plain cushion screw production utilization rate of raw materials is not high, and energy saving drop is not achieved The production theory of consumption.

Utility model content

In view of the deficiencies of the prior art, the utility model provide it is a kind of can guarantee assembling quality, utilization rate of raw materials it is high Hexagonal plain cushion screw assemblies and its cold-heading molding mould.

The technical scheme adopted by the utility model to solve the technical problem is as follows: the hexagonal plain cushion screw assemblies include six Angle screw, plain cushion, the hex screw are successively made through cold-heading molding, heat treatment, threading, surface treatment procedure, the plain cushion After heat treatment procedure, the hex screw is inserted in front of threading process, the plain cushion is made of red copper material, and the plain cushion Internal diameter be not more than the hex screw thread segment nominal diameter.

A kind of cold-heading molding mould for processing the hex screw, comprising:

Three groups of formpistons, including the first, second, third station formpiston；

Three groups of formers, including respectively corresponding with the first, second, third station formpiston first, second, third, Four station formers；

Formpiston described in three groups and former, which respectively correspond, is installed on multi-position bolt molding machine, passes through the material folding of the molding machine System by material base be displaced into three groups described between formpiston and former, contracting bar is successively carried out to material base, contracting angle, outer-hexagonal head are cutting into Type.

In a kind of preferred embodiment of cold-heading molding mould provided by the utility model, the first station formpiston includes:

First formpiston just rushes set, is fixed on the molding machine；

First formpiston just rushes, and one end in set is just rushed set on first formpiston；

First formpiston just rushes core, and in the end that first formpiston just rushes set, first formpiston just rushes core and is equipped with Product head jumping-up chamber, the jumping-up for product head is preforming, and first formpiston is just rushed core and is made of wolfram steel material, It is just rushed with first formpiston integral using interference fit；

First formpiston cushion block just rushes the other end in set set on first formpiston；

First just rushes to summit bar, and one end connects the first formpiston cushion block, and the other end just rushes extension through first formpiston In-core is just rushed to first formpiston；

First spring, one end connect the first formpiston cushion block, and the other end connects first formpiston and just rushes；

First station former includes:

First contracting bar former set, relatively described first formpiston just rush set and are fixed on the molding machine；

First contracting bar former core, relatively described first formpiston just rushes core in the first contracting bar former set, for producing The intense beam of product head jumping-up and bar portion, and the first contracting bar former core is made of wolfram steel material, with the first contracting bar yin Die sleeve is integral using interference fit；

First former mandril extends to the first contracting bar former in-core through the first contracting bar former set；

First former top stem casing, being set to the first former mandril pushes away the first former mandril for fixing the first former mandril More stable out, the service life is higher.

In a kind of preferred embodiment of cold-heading molding mould provided by the utility model, the second station formpiston includes:

Second formpiston set, is fixed on the molding machine；

Second fine core is set in second former set, and the second fine in-core is equipped with accommodating chamber, is used for product six Angle head accommodates clout when forming, and the second fine core is made of wolfram steel material, uses interference with second formpiston set With integrator；

The second station former includes:

Second meson set, the relatively described second formpiston set are fixed on the molding machine；

Second hexagonal meson, the relatively described second fine core are set to the end of second meson set, are used for product head Hexagonal forming, and the second hexagonal meson uses wolfram steel material, it is integral with the tapered interference fit of second meson set；

Second contracting angle mould in second meson set and withstands the second hexagonal meson；

Second contracting angle mould core, the relatively described second hexagonal meson are set in the second contracting angle mould, the bar portion for product Intense beam molding, and the second contracting angle mould core is made of wolfram steel material, with the second contracting angle mould using interference fit at one Body；

Second former mandril runs through the second contracting angle mould, extends to the second contracting angle mould in-core；

Second former top stem casing, being set to the second former mandril pushes away the second former mandril for fixing the second former mandril More stable out, the service life is higher.

In a kind of preferred embodiment of cold-heading molding mould provided by the utility model, the 3rd station formpiston includes:

Third formpiston set, is fixed on the molding machine；

Third technique cheats undershoot, set on one end of third formpiston set, for the molding in product head technique hole, and institute It states third technique hole undershoot to be made of wolfram steel material, be covered with the third formpiston integral using interference fit；

The 4th station former includes:

Third meson set, the relatively described third formpiston are sheathed on the molding machine；

Third hexagonal meson, the relatively described third technique hole undershoot are set to the end of third meson set, are used for product The intense beam of head hexagonal forms, and the third hexagonal meson is made of wolfram steel material, covers with the third meson tapered It is integral using interference fit；

Third leads directly to mould, in third meson set and withstands the third hexagonal meson；

Third leads directly to mold core, and the relatively described third hexagonal meson is set to the third and leads directly in mould, is used for product head, bar The whole upsetting in portion forms；

Third former mandril leads directly to mould through the third and extends to the third and leads directly in mold core；

Third former top stem casing, being set to third former mandril pushes away third former mandril for fixing third former mandril More stable out, the service life is higher.

Compared with prior art, the beneficial effect of hexagonal plain cushion screw assemblies and its cold-heading molding mould provided by the utility model Fruit is made of: the plain cushion of the utility model is using red copper material, and red copper is easy to produce plastic deformation and makes to assemble when assembly It is closer, there is blow-by after solving the problems, such as assembly, improves assembling quality, and the internal diameter of the plain cushion is no more than described The nominal diameter of hex screw thread segment, does not fall out plain cushion on hex screw, facilitates installation and transport；The hexagonal spiral shell Successively contracting bar, contracting angle, outer-hexagonal head trimming cold-heading molding are followed closely, the utilization rate of material is improved, has kept the good mechanics of product Performance.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings, in which:

Fig. 1 is the structural schematic diagram of hexagonal plain cushion screw assemblies provided by the utility model；

Fig. 2 is the cold-heading molding mould of hex screw provided by the utility model in the first station formpiston of the first station and The working principle diagram of one station former；

Fig. 3 is the structural representation of cold-heading molding mould the first station cold-heading semi-finished product of hex screw provided by the utility model Figure；

Fig. 4 is the cold-heading molding mould of hex screw provided by the utility model in the second station formpiston of second station and The working principle diagram of two station formers；

Fig. 5 is the structural representation of the cold-heading molding mould second station cold-heading semi-finished product of hex screw provided by the utility model Figure；

Fig. 6 is the top view of the cold-heading molding mould second station cold-heading semi-finished product for the hex screw that Fig. 5 is provided；

Fig. 7 is the cold-heading molding mould of hex screw provided by the utility model in the 3rd station formpiston of 3rd station and The working principle diagram of three station formers；

Fig. 8 is the structural representation of the cold-heading molding mould 3rd station cold-heading finished product of hex screw provided by the utility model Figure；

Fig. 9 is the top view of the cold-heading molding mould 3rd station cold-heading finished product for the hex screw that Fig. 8 is provided.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work All other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the hexagonal plain cushion screw assemblies 1 include hex screw 11, plain cushion 12, the hex screw 11 according to Secondary to be made through cold-heading molding, heat treatment, threading, surface treatment procedure, the plain cushion 12 is after heat treatment procedure, before threading process It is inserted in the hex screw 11, the plain cushion 12 is made of red copper material, and the internal diameter of the plain cushion 12 is not more than described six The nominal diameter of 11 thread segment of angle screw.

Fig. 2~Fig. 9 is please referred to, the cold-heading molding mould of the hex screw includes:

Three groups of formpistons, including the first, second, third station formpiston 21,23,25；

Three groups of formers, including respectively corresponding with the first, second, third station formpiston first, second, third, Four station formers 22,24,26；

The first station formpiston 21 includes:

First formpiston just rushes set 211, is fixed on the molding machine；

First formpiston just rushes 212, and one end in set 211 is just rushed set on first formpiston；

First formpiston just rushes core 213, and in the end that first formpiston just rushes set 211, first formpiston is just rushed Core 213 is equipped with product head jumping-up chamber 2130, and the jumping-up for product head is preforming, and first formpiston just rushes core 213 It is made of wolfram steel material, it is integral using interference fit that 212 is just rushed with first formpiston；

First formpiston cushion block 214 just rushes the other end in set 211 set on first formpiston；

First just rushes to summit bar 215, and one end connects the first formpiston cushion block 214, at the beginning of the other end runs through first formpiston Punching 212 extends to first formpiston and just rushes in core 213；

First spring 216, one end connect the first formpiston cushion block 214, and the other end connects first formpiston and just rushes 212；

First station former 22 includes:

First contracting bar former set 221, relatively described first formpiston just rush set 211 and are fixed on the molding machine；

First contracting bar former core 222, relatively described first formpiston just rush core 213 set on the first contracting bar former set 221 Interior, for product head jumping-up and the intense beam of bar portion, and the first contracting bar former core 222 is made of wolfram steel material, with institute It is integral using interference fit to state the first contracting bar former set 221；

First former mandril 223 extends to the first contracting bar former core 222 through the first contracting bar former set 221 It is interior；

First former top stem casing 224, being set to the first former mandril 223 for fixing the first former mandril 223 makes first Former mandril 223 is released more stable, and the service life is higher.

When the first station contracting bar, material base is sent to the die orifice of the first station former 22 by the material clipping system of molding machine, works as molding The master slider of machine is mobile to 22 direction of the first station former, and material base is headed into the first contracting bar under the action of the first station formpiston 21 In former core 222, master slider is continued to move along to First Point, and first formpiston just rushes core 213, the first contracting bar former core 222 complete the head jumping-up of product, the molding of bar portion intense beam.

The second station formpiston 23 includes:

Second formpiston set 231, is fixed on the molding machine；

Second fine core 232 is set in second former set 231, is equipped with accommodating chamber in the second fine core 232 2320, for accommodating clout when the molding of product turret head, and the second fine core 232 is made of wolfram steel material, and described Second formpiston set 231 is integral using interference fit；

The second station former 24 includes:

Second meson set 241, the relatively described second formpiston set 231 are fixed on the molding machine；

Second hexagonal meson 242, the relatively described second fine core 232 are set to the end of second meson set 241, are used for Product head hexagonal forming, and the second hexagonal meson 242 uses wolfram steel material, it is tapered with second meson set 241 Interference fit is integral；

Second contracting angle mould 243 in second meson set 241 and withstands the second hexagonal meson 242；

Second contracting angle mould core 244, the relatively described second hexagonal meson 242 is set in the second contracting angle mould 243, for producing The bar portion intense beam of product forms, and the second contracting angle mould core 244 is made of wolfram steel material, is adopted with the second contracting angle mould 243 It is integral with interference fit；

Second former mandril 245 runs through the second contracting angle mould 243, extends in the second contracting angle mould core 244；

Second former top stem casing 246, being set to the second former mandril 245 for fixing the second former mandril 245 makes second Former mandril 245 is released more stable, and the service life is higher.

When second station contracting angle, the contracting rod piece of the first station is sent to second station former 24 by the material clipping system of molding machine Die orifice, when the master slider of molding machine is mobile to 24 direction of second station former, contracting rod piece is under the action of second station formpiston 23 It is headed into the second contracting angle mould core 244, master slider is continued to move along to First Point, the second fine core 232, the second hexagonal Meson 242, the second contracting angle mould core 244 complete that product head hexagonal is preforming and bar portion intense beam shaping.The 3rd station formpiston 25 include:

Third formpiston set 251, is fixed on the molding machine；

Third technique cheat undershoot 252, set on the third formpiston set 251 one end, for product head technique hole at Type, and third technique hole undershoot 252 is made of wolfram steel material, with third formpiston set 251 using interference fit at One；

The 4th station former 26 includes:

Third meson set 261, the relatively described third formpiston set 251 are set to the molding machine；

Third hexagonal meson 262, the relatively described third technique hole undershoot 252 are set to the end of third meson set 261, Intense beam for product head hexagonal forms, and the third hexagonal meson 262 is made of wolfram steel material, is situated between with the third Sub-set 261 is tapered integral using interference fit；

Third leads directly to mould 263, in third meson set 261 and withstands the third hexagonal meson 262；

Third leads directly to mold core 264, and the relatively described third hexagonal meson 262 is set to the third and leads directly in mould 263, for producing The whole upsetting molding on product head, bar portion；

Third former mandril 265 leads directly to mould 263 through the third and extends to the third and leads directly in mold core 261；

Third former top stem casing 266, being set to third former mandril 265 for fixing third former mandril 265 makes third Former mandril 265 is released more stable, and the service life is higher.

When 3rd station outer-hexagonal head trimming for forming, the contracting corner fittings of second station is sent to third by the material clipping system of molding machine The die orifice of station former 26, when the master slider of molding machine is mobile to 26 direction of 3rd station former, contracting corner fittings is in 3rd station sun It is headed into third under the action of mould 25 to lead directly in mold core 264, master slider is continued to move along to First Point, the third technique hole Undershoot 252, third hexagonal meson 262, third lead directly to the whole upsetting molding that mold core 264 completes product head and bar portion.

The beneficial effect of hexagonal plain cushion screw assemblies and its cold-heading molding mould provided by the utility model is: the utility model The plain cushion 12 be made of red copper material, red copper is easy to produce plastic deformation and makes to assemble closer when assembly, solves Occur the problem of blow-by after assembly, improves assembling quality, and the internal diameter of the plain cushion 12 is not more than the hex screw 11 The nominal diameter of thread segment, does not fall out plain cushion on hex screw, facilitates installation and transport；The hex screw successively contracts Bar, contracting angle, outer-hexagonal head trimming cold-heading molding, improve the utilization rate of material, have kept the good mechanical property of product.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases The technical field of pass similarly includes within the scope of patent protection of the utility model.

Claims

1. a kind of hexagonal plain cushion screw assemblies, it is characterised in that: including hex screw, plain cushion, the hex screw is successively through cold Upsetting molding, heat treatment, threading, surface treatment procedure are made, and the plain cushion is inserted in described after heat treatment procedure, before threading process Hex screw, the plain cushion are made of red copper material, and the internal diameter of the plain cushion is no more than the hex screw thread segment Nominal diameter.

2. a kind of cold-heading molding mould for processing hex screw described in claim 1, it is characterised in that: include:

Three groups of formers, including the first, second, third, fourth work corresponding with the first, second, third station formpiston respectively Position former；

Formpiston described in three groups and former, which respectively correspond, is installed on multi-position bolt molding machine, passes through the material clipping system of the molding machine By material base be displaced into three groups described between formpiston and former, contracting bar, contracting angle, outer-hexagonal head trimming for forming are successively carried out to material base.

3. cold-heading molding mould according to claim 2, it is characterised in that: the first station formpiston includes:

First formpiston just rushes set, is fixed on the molding machine；

First formpiston just rushes core, and in the end that first formpiston just rushes set, first formpiston just rushes core equipped with product Head jumping-up chamber, the jumping-up for product head is preforming, and first formpiston is just rushed core and is made of wolfram steel material, with institute The first formpiston is stated just to rush using interference fit integrally；

First just rushes to summit bar, and one end connects the first formpiston cushion block, and the other end just rushes through first formpiston and extends to institute It states the first formpiston and just rushes in-core；

First station former includes:

First contracting bar former core, relatively described first formpiston just rush core in the first contracting bar former set, are used for product head The intense beam of portion's jumping-up and bar portion, and the first contracting bar former core is made of wolfram steel material, with the first contracting bar former set It is integral using interference fit；

First former top stem casing is set to the first former mandril, for fixing the first former mandril, releases the first former mandril more Stablize, the service life is higher.

4. cold-heading molding mould according to claim 2, it is characterised in that: the second station formpiston includes:

Second formpiston set, is fixed on the molding machine；

Second fine core is set in second formpiston set, and the second fine in-core is equipped with accommodating chamber, is used for product turret head Clout is accommodated when molding, and the second fine core is made of wolfram steel material, cover with second formpiston using interference fit Integrally；

The second station former includes:

Second hexagonal meson, the relatively described second fine core are set to the end of second meson set, are used for product head hexagonal Molding, and the second hexagonal meson uses wolfram steel material, it is integral with the tapered interference fit of second meson set；

Second contracting angle mould core, the relatively described second hexagonal meson are set in the second contracting angle mould, the bar portion intense beam for product Molding, and the second contracting angle mould core is made of wolfram steel material, it is integral using interference fit with the second contracting angle mould；

Second former top stem casing is set to the second former mandril, for fixing the second former mandril, releases the second former mandril more Stablize, the service life is higher.

5. cold-heading molding mould according to claim 2, it is characterised in that: the 3rd station formpiston includes:

Third formpiston set, is fixed on the molding machine；

Third technique cheats undershoot, set on one end of third formpiston set, for the molding in product head technique hole, and described the Three techniques hole undershoot is made of wolfram steel material, is covered with the third formpiston integral using interference fit；

The 4th station former includes:

Third hexagonal meson, the relatively described third technique hole undershoot are set to the end of third meson set, are used for product head The intense beam of hexagonal forms, and the third hexagonal meson is made of wolfram steel material, covers tapered use with the third meson Interference fit is integral；

Third leads directly to mold core, and relatively described third hexagonal meson is set to the third and leads directly in mould, for product head, bar portion Whole upsetting molding；

Third former top stem casing is set to third former mandril, for fixing third former mandril, releases third former mandril more Stablize, the service life is higher.