CN107866496B - It is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing - Google Patents
It is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing Download PDFInfo
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- CN107866496B CN107866496B CN201610858012.7A CN201610858012A CN107866496B CN 107866496 B CN107866496 B CN 107866496B CN 201610858012 A CN201610858012 A CN 201610858012A CN 107866496 B CN107866496 B CN 107866496B
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- double tapered
- tapered bushing
- lower cone
- double
- blank
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- 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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
Abstract
Disclosure of the invention is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing, and the forming tool includes feed mechanism, lower cone builder, shedding mechanism；The automatic feed mechanism includes workpiece (91), deflector chute (92), vibrating tray (93)；The lower cone builder includes lumen type face pressure head (1) in double tapered bushing, double tapered bushing blank (2), double tapered bushing outer mold surface interlayer set (4), guide sleeve (5), lower cone former (6)；The shedding mechanism is discharge arm (7).The present invention is by designing a whole set of combined type fixture for forming, it is precisely controlled to shape mold cavity size, realize that mold is matched with workpiece size, workpiece unstability is limited by outer mold surface in mold, using piecewise combination mold, the mode of limit necking forming shapes lower cone, meets the forming bored under 100 ° of countersunk heads or tack thin-walled interference bushing, and can be used for accurately controlling the technique for aircraft composite interference connection structure of amount of interference.
Description
Technical field
The invention belongs to pumping nail class fastener thin-wall bush forming technique field, it is related to cone forming work under a kind of thin-wall bush
Tool and method.
Background technique
Interference pumping nail fastening system is mainly used for the installation of composite structure, due to interference bushing introducing, it can be achieved that
Composite material interference installation, improves anti-fatigue ability.Not opening wide position for aircaft configuration can realize that single side is installed, can also be at 7 °
Bevel structure on realize installation, and good reliability is widely used in the isostructural connection of airframe, wing.Double tapered lining
Set is the key component for interfering pumping nail fastening system, and interference bush structure epicone is countersunk head, and cone is 40 ° of cone angles under tail portion.Dry
It relates in pumping nail installation process, the bootable nail set of the lower cone of this kind of bush structure is plastically deformed, and is shaped big footing, is advantageous
In a kind of structure of interference pumping nail installation forming, to improve staking quality conformance.
Foreign countries block the related data of this kind of bushing at present, it is domestic for machining interference pumping nail double tapered bushing without
Relevant report.Currently, interference of the interference pumping nail double tapered bushing for composite structure is installed, processes under bushing and bore using rotation
Tail portion is screwed out cone angle by the method for pressure, and the deficiency of this kind of technology is that clamping is relatively complicated, can not achieve automatic loading/unloading,
Processing efficiency is extremely low.Due to the particularity of double tapered bush structure, and to realize, precisely interference installation, bushing wall thickness are only
0.25mm, when shaping lower cone, it is improper to control, easily generation unstability, and ovalizing deflection occurs for bushing straight wall portion, and epicone angle faces generate
Distortion, to cause dimension overproof.
In view of the shortcomings of the prior art, the present invention proposes the forming tool and method of a kind of double tapered bushing.
Summary of the invention
The purpose of the present invention: interfere bushing to meet the actual needs, processing qualified double tapered, design one kind and be used for
Interfere pumping nail double tapered bushing lower cone forming tool and method, realize 100 ° of countersunk heads or tack thin-walled interference bushing under bore at
Shape solves the problems, such as that thin-wall bush shapes unstability, of poor quality, off-dimension, improves staking forming quality consistency.
To achieve the goals above, present invention employs following technical solutions:
It is a kind of for interfering the lower cone forming tool (as shown in Figure 1) of pumping nail double tapered bushing, including automatic feed mechanism,
Lower cone builder, shedding mechanism；The automatic feed mechanism (as shown in Figure 3, Figure 4) includes workpiece 91, deflector chute 92, vibration
Charging tray 93；The lower cone builder (as shown in Figure 2) includes lumen type face pressure head 1 in double tapered bushing, double tapered bushing blank 2
(as shown in Figure 6), double tapered bushing outer mold surface interlayer cover 4, guide sleeve 5, lower cone former 6；The shedding mechanism (such as Figure 11) is to unload
Expect bar 7；The double tapered bushing outer mold surface interlayer set 4 and lower cone former 6 are coaxially loaded in guide sleeve 5, the double tapered bushing hair
Base 2 is mounted on the interior lumen type face of the double tapered bushing outer mold surface interlayer set 4, lumen type face pressure head 1 in the double tapered bushing
Be pressed into from top to bottom the double tapered bushing blank 2 and it is co-axial be coupled, described in the discharge arm 7 is aligned from the bottom up
The interior lumen type face of lower cone former 6.
Lumen type face pressure head 1 (as described in Figure 5) includes grip shank 11, epicone confined planes 12, epicone in the double tapered bushing
Face 13, head and bar portion switching fillet 14, bar portion 15, the lower conical surface 16, bar portion and the lower conical surface switching fillet 17, guiding bar 18, at
Double tapered bushing 3 after shape is as shown in Figure 7；It is big that the excircle dimension of the epicone confined planes 12 is greater than double tapered bushing blank epicone
Mouth outer circle；The angle of the upper conical surface 13 is identical as angle faces 21 in double tapered bushing blank；The head and bar portion switching are justified
The size at angle 14 is identical as double tapered bushing blank filleted corner 22；The bar portion 15 is slide fit with lumen type face 23 in double tapered bushing
Conjunction relationship, and limit lumen type face 23 in double tapered bushing and inwardly deform；Under forming when cone under double tapered bushing blank inner circle
End face 24 is contacted with bar portion with lower conical surface switching fillet 17, plays the role of rounding off, is shaped under double tapered bushing in cone
Fillet 31 and lower cone bull nose 33；The lower conical surface 16 shapes cone angle binding face 32 under double tapered bushing；The guiding bar 18
Contacted with the interior lumen type face 65 of lower cone former 6, when adjust die location, for make in double tapered bushing lumen type face pressure head 1 and under
Cone former 6 keeps coaxially, playing the role of positioning and guiding；
The double tapered bushing outer mold surface interlayer covers 4 (as shown in Figure 8), double tapered bushing epicone supporting surface 41 and double tapered
The conical surface 25 is bonded on bushing blank；The size and 26 size of double tapered bushing blank epicone fillet of epicone and bar portion switching fillet 42
It is identical；The effect of double tapered bushing bar portion outer mold surface limit hole 43 is that lower cone prevents double tapered bushing blank bar portion 27 from sending out when shaping
Change shape；4 effect of double tapered bushing outer mold surface interlayer set is to limit the overall dimensional deformation of double tapered bushing blank 2；It will be double
Taper socket outer mold surface interlayer set 4 is designed to segmented with lower cone former 6, it is therefore intended that shapes the double tapered bushing of different interlayers
When, it only can cover 4 by replacement double tapered bushing outer mold surface interlayer, save die cost, and can realize double tapered bushing outer mold surface
The quick-replaceable of interlayer set 4, saves and adjusts the mold time；
As shown in Figure 10, double tapered bushing interlayer set lower end surface 45 connects the lower cone former 6 with lower cone former upper surface 61
It touches, the 34 upward positions 2mm are die joint at double tapered bushing cone angle switching, select herein to be die joint convenient for the demoulding of lower cone；Under
Cone former pilot hole 62 is designed as straight wall hole, and the height of lower cone former pilot hole is 2mm, with double tapered bushing blank bar portion 27
Lower end in contact is allowed to can smoothly enter into lower cone former pilot hole 62, shapes convenient for lower cone；Under former cone switching fillet 63, it is lower cone at
When shape, double tapered bushing blank outer circle lower end surface 28 is contacted with cone switching fillet 63 under former, and cone switching fillet can under the former
Keep double tapered bushing blank outer circle lower end surface 28 smoothly mobile to conical surface direction, plays the role of rounding off, bipyramid can be prevented
Occur during degree bushing blank outer circle lower end surface 28 is mobile stuck；The angle and double tapered bushing cone angle in lower coning angle face 64
34 angle is identical at switching；
As shown in figure 9, under forming when cone, double tapered bushing outer mold surface interlayer set 4 and lower cone former 6 are loaded on the guide sleeve 5
In guide sleeve 5, outer mold surface interlayer set periphery 44 is contacted with lumen type face 51 in guide sleeve, lower cone former periphery 66 and lumen type in guide sleeve
Face 51 contacts；The effect of guide sleeve 5 is to limit double tapered bushing outer mold surface interlayer set 4 and lower 6 radial displacement of cone former；
The discharge arm 7 as shown in figure 11, is completed under double tapered bushing after cone forming, and the lower end 72 of promotion discharge arm 7 is unloaded
Expect the upper surface 71 of bar and the lower end face contact of double tapered bushing 3 after molding, ejected, completes discharging.
The invention also discloses a kind of for interfering the lower cone manufacturing process of pumping nail double tapered bushing, is shrunk to using punching
It is bored under shape, mold designs mould using segmentation, realizes automatic loading/unloading, improves processing efficiency.
Process steps are as follows:
Step 1: debugging bores former under pumping nail double tapered bushing for interfering, by the double tapered bushing of corresponding specification
Interior lumen type face pressure head 1 is clamped in equipment, and double tapered bushing blank 2 is mounted on feed mechanism.
Step 2: lower cone builder is adjusted, and it is first that guide sleeve 5 is fixed, successively by lower cone former 6 and double tapered bushing external form
Face interlayer set 4 is packed into guide sleeve 5.
The position flushed is kept step 3: exiting on the top 71 of discharge arm to the lower end surface apart from lower cone former 6.
Step 4: lumen type face pressure head 1 in adjustment double tapered bushing, make its with double tapered bushing outer mold surface interlayer set 4 and under
Cone former 6 is kept coaxially, and using the guiding bar 18 of lumen type face pressure head 1 in double tapered bushing, by guiding bar 18, deeply lower cone is negative
Mold cavity type face 65 keeps lumen type face pressure head 1 and lower cone former 6 in double tapered bushing coaxial, it is ensured that lumen type in double tapered bushing
Face pressure head 1 keeps coaxial during moving downward, with lower cone former 6, prevents the lower cone shaped eccentric.
Double tapered is served as a contrast with after the concentricity of lower cone former 6 step 5: adjusting lumen type face pressure head 1 in double tapered bushing
Lumen type face pressure head 1 is exited to initial position in covering, i.e., the lower end surface of guiding bar 18 and double tapered bushing outer mold surface interlayer cover 4 it is upper
The distance between end face is greater than the entire length of double tapered bushing, and double tapered bushing blank is sent into mold convenient for feed mechanism.
Step 6: double tapered bushing blank 2 is packed into double tapered bushing outer mold surface interlayer set 4 under the drive of feed mechanism
Interior, double tapered bushing blank bar portion 27 is contacted with double tapered bushing bar portion outer mold surface limit hole 43.
Step 7: lumen type face pressure head 1 moves downward in double tapered bushing, the upper conical surface 13 and angle in double tapered bushing blank
Face 21 contacts, and double tapered bushing blank 2 is driven to move downward along double tapered bushing outer mold surface limit hole 43, in the process,
Bar portion 15 is contacted with lumen type face 23 in double tapered bushing, and bar portion switching fillet 14 is contacted with double tapered bushing blank filleted corner 22,
Guarantee that the interior lumen type face of double tapered bushing blank is bonded completely with pressure head, its internal unstability can be prevented.
Step 8: continue to move downward after lumen type face pressure head 1 is bonded with double tapered bushing blank 2 in double tapered bushing, it is double
The conical surface 25 is contacted with double tapered bushing epicone supporting surface 41 on taper socket blank, double tapered bushing blank epicone fillet 26 and bar
Portion's switching fillet 42 contacts；When in double tapered bushing lumen type face 23 enter lower cone former pilot hole 62 after, initially enter it is lower bore at
Shape process；Double tapered bushing blank outer circle lower end surface 28 passes through cone switching fillet 63 under former, along lower cone former cone angle face 64
Shape lower cone；In the process, double tapered bushing blank inner circle lower end surface 24 is moved along the conical surface 16 under pressure head, guarantees bipyramid
It spends and bores forming dimension precision under bushing.
Step 9: lumen type face pressure head 1 in double tapered bushing is first exited mold to first after having shaped and boring under double tapered bushing
Beginning position pushes up discharge arm 7, at this point, discharge arm upper surface 71 and 3 lower end face contact of double tapered bushing, are ejected
Mold completes discharging；So far the loading and unloading and forming cycle process bored under double tapered bushing are completed.
Beneficial effects of the present invention: by designing a whole set of combined type fixture for forming, it is precisely controlled to shape mold cavity ruler
It is very little, it realizes that mold is matched with workpiece size, workpiece unstability is limited by outer mold surface in mold, using piecewise combination mold, limit
The mode of necking forming shapes lower cone, meets the forming bored under 100 ° of countersunk heads or tack thin-walled interference bushing, and can be used for essence
Really the technique for aircraft composite of control amount of interference interferes connection structure, to improve the joint fatigue service life；By the way of punching closing in,
Using piecewise combination mold, it will be set as mold die joint at cone angle and straight wall switching, shape cavity dimension is precisely controlled to, with limit
The mode of position necking forming gradually shapes lower cone, is conducive to cone angle forming, and workpiece after molding is facilitated to demould；In bushing
Portion's limit mold tip designs have guide post, it is therefore intended that are convenient for centering when adjustment upper/lower die concentricity, to improve processing essence
Degree；Feeding device carries out feeding using vibrating tray, and blanking device is arranged below former, after completing lower cone forming, blanking top
Bar ejects workpiece from former, to improve processing efficiency.
Progress point of the invention is as described below in detail:
1, process automatic loading/unloading can be realized using automatic feed mechanism, shedding mechanism, improve processing efficiency, reduce
Cost；Aiming at the problem that thin-walled double tapered bushing clamping easily-deformable unstability, accurately inside and outside type cavity mould is limited design size
Position Deformation control, to effectively solve the problem of forming unstability dimension overproof；The lower cone of forming is led to by the way of taper necking
The cavity dimension of control inner conical surface and male cone (strobilus masculinus) is crossed to guarantee the forming dimension of lower cone.
2, lumen type face pressure head lower end design transition fillet in double tapered bushing, double tapered bushing outer mold surface interlayer set inner cavity are set
Knuckle is counted, cone angle rounding off is conducive to, prevents from stuck causing material stacking；The lower quality bored is shaped to improve, double
Lumen type face pressure head lower end Design guidance bar in taper socket, when adjusting die location, convenient for adjusting lumen type in double tapered bushing
The concentricity of face pressure head and lower cone former, plays the role of positioning and guiding.
3, guidance double tapered interference bushing is played in the straight wall hole that the inner cavity upper end design length of lower cone former is 2mm, the hole
The lower end of blank enters lower cone former, shapes convenient for cone angle；Upper and lower mould will be designed as at cone under double tapered bushing and straight wall switching
Have die joint, is demoulded convenient for shaping dies；Double tapered bushing outer mold surface interlayer covers design seperated with lower cone former progress, for not
Double tapered interference bushing with interlayer is conveniently replaceable mold, saves the adjustment mold time, improves efficiency, and saves cost；Guide sleeve
Double tapered bushing outer mold surface interlayer set and lower cone former are subjected to radial displacement limitation, improve the concentricity of shaping dies.
Detailed description of the invention
Fig. 1 is to interfere the structural schematic diagram that forming tool is bored under pumping nail double tapered bushing；
Fig. 2 is the structural schematic diagram of lower cone builder and shedding mechanism；
Fig. 3 is the front view schematic diagram of automatic feed mechanism；
Fig. 4 is the top view illustration of automatic feed mechanism；
Fig. 5 is the structural schematic diagram of lumen type face pressure head in double tapered bushing；
Fig. 6 is the structural schematic diagram of double tapered bushing blank；
Fig. 7 is the structural schematic diagram of double tapered bushing after molding；
Fig. 8 is the structural schematic diagram of double tapered bushing outer mold surface interlayer set；
Fig. 9 is the structural schematic diagram of guide sleeve；
Figure 10 is the structural schematic diagram of lower cone former；
Figure 11 is the structural schematic diagram of discharge arm.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Choose corresponding specification interference pumping nail double tapered bushing die for blank after, carry out equipment debugging, by forming step into
The lower cone forming of row.
Specific embodiment:
Embodiment 1:
For by taking -5 specifications interfere and bore forming under pumping nail double tapered bushing as an example, realized by following steps:
Step 1: commissioning device includes feed mechanism, lower cone builder and shedding mechanism, select the lower cone of -5 specifications at
Lumen type face pressure head in double tapered bushing is clamped in equipment by shape mold, and double tapered bushing blank is packed into mould by feed mechanism
Tool.
Step 2: lower cone builder is adjusted, and it is first that guide sleeve 5 is fixed, successively by lower cone former 6 and double tapered bushing external form
Face interlayer set 4 is packed into guide sleeve 5.
The position flushed is kept step 3: exiting on the top 71 of shedding mechanism to the lower end surface apart from lower cone former 6.
Step 4: lumen type face pressure head 1 in adjustment double tapered bushing, make its with double tapered bushing outer mold surface interlayer set 4 and under
Cone former 6 is kept coaxially, and using the guiding bar 18 of lumen type face pressure head 1 in double tapered bushing, by guiding bar 18, deeply lower cone is negative
The interior lumen type face 65 of mould 6 keeps lumen type face pressure head 1 and lower cone former 6 in double tapered bushing coaxial, it is ensured that double tapered bushing inner cavity
Type face pressure head 1 keeps coaxial during moving downward, with lower cone former 6, prevents the lower cone shaped eccentric.
Double tapered is served as a contrast with after the concentricity of lower cone former 6 step 5: adjusting lumen type face pressure head 1 in double tapered bushing
Lumen type face pressure head 1 is exited to initial position in covering, i.e., the lower end surface of guiding bar 18 and double tapered bushing outer mold surface interlayer cover 4 it is upper
The distance between end face is greater than the entire length of double tapered bushing, and double tapered bushing blank 2 is sent into mold convenient for feed mechanism.
Step 6: double tapered bushing blank 2 is packed into interlayer set 4 under the drive of feed mechanism, double tapered bushing blank
Bar portion 27 is contacted with double tapered bushing bar portion outer mold surface limit hole 43.
Step 7: lumen type face pressure head 1 moves downward in double tapered bushing, the upper conical surface 13 is interior with double tapered bushing blank 2
Angle faces 21 contact, and drive double tapered bushing blank to move downward along double tapered bushing bar portion outer mold surface limit hole 43, herein
In the process, bar portion 15 is contacted with lumen type face 23 in double tapered bushing, bar portion switching fillet 14 and double tapered bushing blank filleted corner
22 contacts guarantee that the interior lumen type face of double tapered bushing blank is bonded completely with pressure head, can prevent its internal unstability.
Step 8: continue to move downward after lumen type face pressure head 1 is bonded with double tapered bushing blank 2 in double tapered bushing, it is double
The conical surface 25 is contacted with double tapered bushing epicone supporting surface 41 on taper socket blank, double tapered bushing blank epicone fillet 26 and bar
Portion's switching fillet 42 contacts；When in double tapered bushing lumen type face 23 enter lower cone former pilot hole 62 after, initially enter it is lower bore at
Shape process；Double tapered bushing blank outer circle lower end surface 28 passes through cone switching fillet 63 under former, along lower cone former cone angle face 64
Shape lower cone；In the process, double tapered bushing blank inner circle lower end surface 24 is moved along the conical surface 16 under pressure head, guarantees bipyramid
It spends and bores forming dimension precision under bushing.
Step 9: lumen type face pressure head 1 in double tapered bushing is first exited mold to first after having shaped and boring under double tapered bushing
Beginning position pushes up shedding mechanism 7, at this point, discharge arm upper surface 71 and 3 lower end face contact of double tapered bushing, Jiang Qiding
Mold out completes discharging；So far it completes to bore forming process under -5 specification double tapered bushings.
Embodiment 2:
For by taking -6 specifications interfere and bore forming under pumping nail double tapered bushing as an example, realized by following steps:
Step 1: commissioning device includes feed mechanism, lower cone builder and shedding mechanism, select the lower cone of -6 specifications at
Lumen type face pressure head in double tapered bushing is clamped in equipment by shape mold, and double tapered bushing blank is packed into mould by feed mechanism
Tool.
Step 2: lower cone builder is adjusted, and it is first that guide sleeve 5 is fixed, successively by lower cone former 6 and double tapered bushing external form
Face interlayer set 4 is packed into guide sleeve 5.
The position flushed is kept step 3: exiting the upper surface 71 of shedding mechanism to the lower end surface apart from lower cone former 6.
Step 4: lumen type face pressure head 1 in adjustment double tapered bushing, make its with double tapered bushing outer mold surface interlayer set 4 and under
Cone former 6 is kept coaxially, and using the guiding bar 18 of lumen type face pressure head 1 in double tapered bushing, by guiding bar 18, deeply lower cone is negative
The interior lumen type face 65 of mould 6 keeps lumen type face pressure head 1 and lower cone former 6 in double tapered bushing coaxial, it is ensured that double tapered bushing inner cavity
Type face pressure head 1 keeps coaxial during moving downward, with lower cone former 6, prevents the lower cone shaped eccentric.
Double tapered is served as a contrast with after the concentricity of lower cone former 6 step 5: adjusting lumen type face pressure head 1 in double tapered bushing
Lumen type face pressure head 1 is exited to initial position in covering, i.e., the lower end surface of guiding bar 18 and double tapered bushing outer mold surface interlayer cover 4 it is upper
The distance between end face is greater than the entire length of double tapered bushing, and double tapered bushing blank 2 is sent into mold convenient for feed mechanism.
Step 6: double tapered bushing blank 2 is packed into interlayer set 4 under the drive of feed mechanism, double tapered bushing blank
Bar portion 27 is contacted with double tapered bushing bar portion outer mold surface limit hole 43.
Step 7: lumen type face pressure head 1 moves downward in double tapered bushing, the upper conical surface 13 is interior with double tapered bushing blank 2
Angle faces 21 contact, and drive double tapered bushing blank to move downward along double tapered bushing bar portion outer mold surface limit hole 43, herein
In the process, bar portion 15 is contacted with lumen type face 23 in double tapered bushing, the inner circle of bar portion switching fillet 14 and double tapered bushing blank 2
Angle 22 contacts, and guarantees that the interior lumen type face of double tapered bushing blank is bonded completely with pressure head, can prevent its internal unstability.
Step 8: continue to move downward after lumen type face pressure head 1 is bonded with double tapered bushing blank 2 in double tapered bushing, it is double
The conical surface 25 is contacted with double tapered bushing epicone supporting surface 41 on taper socket blank, double tapered bushing blank epicone fillet 26 and bar
Portion's switching fillet 42 contacts；When in double tapered bushing lumen type face 23 enter lower cone former pilot hole 62 after, initially enter it is lower bore at
Shape process；Double tapered bushing blank outer circle lower end surface 28 passes through cone switching fillet 63 under former, along lower cone former cone angle face 64
Shape lower cone；In the process, double tapered bushing blank inner circle lower end surface 24 is moved along the conical surface 16 under pressure head, guarantees bipyramid
It spends and bores forming dimension precision under bushing.
Step 9: lumen type face pressure head 1 in double tapered bushing is first exited mold to first after having shaped and boring under double tapered bushing
Beginning position pushes up discharge arm 7, at this point, 7 upper surface 71 of discharge arm and double tapered bushing lower end face contact, are ejected
Mold completes discharging；So far it completes to bore forming process under -6 specification double tapered bushings.
Embodiment 3:
For by taking -8 specifications interfere and bore forming under pumping nail double tapered bushing as an example, realized by following steps:
Step 1: commissioning device includes feed mechanism, lower cone builder and shedding mechanism, select the lower cone of -8 specifications at
Lumen type face pressure head in double tapered bushing is clamped in equipment by shape mold, and double tapered bushing blank is packed into mould by feed mechanism
Tool.
Step 2: lower cone builder is adjusted, and it is first that guide sleeve 5 is fixed, successively by lower cone former 6 and double tapered bushing external form
Face interlayer set 4 is packed into guide sleeve 5.
The position flushed is kept step 3: exiting the upper surface 71 of discharge arm to the lower end surface apart from lower cone former 6.
Step 4: lumen type face pressure head 1 in adjustment double tapered bushing, make its with double tapered bushing outer mold surface interlayer set 4 and under
Cone former 6 is kept coaxially, and using the guiding bar 18 of lumen type face pressure head 1 in double tapered bushing, by guiding bar 18, deeply lower cone is negative
The interior lumen type face 65 of mould 6 keeps lumen type face pressure head 1 and lower cone former 6 in double tapered bushing coaxial, it is ensured that double tapered bushing inner cavity
Type face pressure head 1 keeps coaxial during moving downward, with lower cone former 6, prevents the lower cone shaped eccentric.
Double tapered is served as a contrast with after the concentricity of lower cone former 6 step 5: adjusting lumen type face pressure head 1 in double tapered bushing
Lumen type face pressure head 1 is exited to initial position in covering, i.e., the lower end surface of guiding bar 18 and double tapered bushing outer mold surface interlayer cover 4 it is upper
The distance between end face is greater than the entire length of double tapered bushing, and double tapered bushing blank is sent into mold convenient for feed mechanism.
Step 6: double tapered bushing blank 2 is packed into interlayer set 4 under the drive of feed mechanism, double tapered bushing blank
Bar portion 27 is contacted with double tapered bushing bar portion outer mold surface limit hole 43.
Step 7: lumen type face pressure head 1 moves downward in double tapered bushing, the upper conical surface 13 and angle in double tapered bushing blank
Face 21 contacts, and drives double tapered bushing blank to move downward along double tapered bushing bar portion outer mold surface limit hole 43, in this process
In, bar portion 15 is contacted with lumen type face 23 in double tapered bushing, and bar portion switching fillet 14 connects with double tapered bushing blank filleted corner 22
Touching guarantees that the interior lumen type face of double tapered bushing blank is bonded completely with pressure head, can prevent its internal unstability.
Step 8: continue to move downward after lumen type face pressure head 1 is bonded with double tapered bushing blank 2 in double tapered bushing, it is double
The conical surface 25 is contacted with double tapered bushing epicone supporting surface 41 on taper socket blank, double tapered bushing blank epicone fillet 26 and bar
Portion's switching fillet 42 contacts；When in double tapered bushing lumen type face 23 enter lower cone former pilot hole 62 after, initially enter it is lower bore at
Shape process；Double tapered bushing blank outer circle lower end surface 28 passes through cone switching fillet 63 under former, along lower cone former cone angle face 64
Shape lower cone；In the process, double tapered bushing blank inner circle lower end surface 24 is moved along the conical surface 16 under pressure head, guarantees bipyramid
It spends and bores forming dimension precision under bushing.
Step 9: lumen type face pressure head 1 in double tapered bushing is first exited mold to first after having shaped and boring under double tapered bushing
Beginning position pushes up discharge arm 7, at this point, discharge arm upper surface 71 and double tapered bushing lower end face contact, are ejected mould
Tool completes discharging；So far it completes to bore forming process under -8 specification double tapered bushings.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of for interfering the lower cone forming tool of pumping nail double tapered bushing, which is characterized in that including automatic feed mechanism, under
Bore builder, shedding mechanism；The automatic feed mechanism includes workpiece (91), deflector chute (92), vibrating tray (93)；It is described
Lower cone builder includes lumen type face pressure head (1) in double tapered bushing, double tapered bushing blank (2), double tapered bushing outer mold surface
Interlayer set (4), guide sleeve (5), lower cone former (6)；The shedding mechanism is discharge arm (7)；The double tapered bushing outer mold surface folder
Coaxially loaded in guide sleeve (5), the double tapered bushing blank (2) is mounted on the double tapered lining for layer set (4) and lower cone former (6)
On the interior lumen type face for covering outer mold surface interlayer set (4), lumen type face pressure head (1) is pressed into described double from top to bottom in the double tapered bushing
Taper socket blank (2) and it is co-axial be coupled, the discharge arm (7) is directed at lower cone former (6) from the bottom up
Interior lumen type face；
Lumen type face pressure head (1) includes grip shank (11), epicone confined planes (12), the upper conical surface (13), head in the double tapered bushing
Portion and bar portion switching fillet (14), bar portion (15), the lower conical surface (16), bar portion and the switching of the lower conical surface fillet (17), guiding bar (18)；
The excircle dimension of the epicone confined planes (12) is greater than the big mouth outer circle of double tapered bushing blank epicone；The angle of the upper conical surface (13)
It spends identical as angle faces (21) in double tapered bushing blank；The size and double tapered of the head and bar portion switching fillet (14) serve as a contrast
It is identical to cover blank filleted corner (22)；Lumen type face (23) is sliding fit relationship in the bar portion (15) and double tapered bushing, and is limited
Lumen type face (23) inwardly deform in double tapered bushing；When the lower cone of forming, double tapered bushing blank inner circle lower end surface (24) with
Bar portion is contacted with lower conical surface switching fillet (17), is played the role of rounding off, is shaped and bore filleted corner under double tapered bushing
(31)；The lower conical surface (16) shapes cone angle binding face (32) under double tapered bushing；The guiding bar (18) and lower cone former
(6) interior lumen type face (65) contact keeps lumen type face pressure head (1) and the holding of lower cone former (6) in double tapered bushing coaxial.
2. according to claim 1 for interfering the lower cone forming tool of pumping nail double tapered bushing, which is characterized in that described
In double tapered bushing outer mold surface interlayer set (4), the conical surface on double tapered bushing epicone supporting surface (41) and double tapered bushing blank
(25) it is bonded；Epicone and the size of bar portion switching fillet (42) are identical as double tapered bushing blank epicone fillet (26) size；It is double
The effect of taper socket bar portion outer mold surface limit hole (43) is that lower cone prevents double tapered bushing blank bar portion (27) from occurring when shaping
Deformation；The double tapered bushing outer mold surface interlayer set (4) and lower cone former (6) are designed to segmented, shape the double of different interlayers
When taper socket, only double tapered bushing outer mold surface interlayer set (4) are replaced.
3. according to claim 1 for interfering the lower cone forming tool of pumping nail double tapered bushing, which is characterized in that described
In lower cone former (6), double tapered bushing outer mold surface interlayer set lower end surface (45) contacts with lower cone former upper surface (61), double
(34) upward position 2mm is die joint at taper socket cone angle switching, is demoulded convenient for lower cone；Lower cone former pilot hole (62) design
Height for straight wall hole, lower cone former pilot hole (62) is 2mm, and the lower end in contact with double tapered bushing blank bar portion (27) makes
Can smoothly enter into lower cone former pilot hole (62), convenient for lower cone forming；When lower cone shapes, double tapered bushing blank outer circle lower end surface
(28) it is contacted with cone switching fillet (63) under former, cone switching fillet can make double tapered bushing blank outer circle lower end surface under the former
(28) smoothly mobile to conical surface direction, play the role of rounding off；The angle and double tapered bushing in lower coning angle face (64) are bored
The angle of (34) is identical at the switching of angle.
4. according to claim 1 for interfering the lower cone forming tool of pumping nail double tapered bushing, which is characterized in that forming
When lower cone, loaded in guide sleeve (5), outer mold surface interlayer covers periphery for double tapered bushing outer mold surface interlayer set (4) and lower cone former (6)
(44) it is contacted with lumen type face (51) in guide sleeve, lower cone former periphery (66) contacts with lumen type face (51) in guide sleeve；Guide sleeve (5)
Effect is to limit double tapered bushing outer mold surface interlayer set (4) and lower cone former (6) radial displacement.
5. according to claim 1 for interfering the lower cone forming tool of pumping nail double tapered bushing, which is characterized in that complete
It under double tapered bushing after cone forming, pushes discharge arm lower end (72), discharge arm upper surface (71) and double tapered bushing after molding
(3) lower end face contact is ejected, and discharging is completed.
6. it is a kind of for interfering the lower cone manufacturing process of pumping nail double tapered bushing, the lower cone of forming is shunk using punching, mold uses
Segmentation designs mould, which is characterized in that process steps are as follows:
It (1), will be in the double tapered bushing of corresponding specification step 1: debugging bores former under pumping nail double tapered bushing for interfering
Lumen type face pressure head (1) is clamped in equipment, and double tapered bushing blank (2) is mounted on feed mechanism；
(2) first that guide sleeve (5) are fixed step 2: adjusting lower cone builder, successively by lower cone former (6) and double tapered bushing
Outer mold surface interlayer set (4) is packed into guide sleeve (5)；
(3) position flushed is kept step 3: exiting discharge arm upper surface (71) to the lower end surface apart from lower cone former (6)；
(4) step 4: lumen type face pressure head (1) in adjustment double tapered bushing, is drawn using lumen type face pressure head (1) in double tapered bushing
Lumen type face (65) in guiding bar (18) deeply lower cone former is made in double tapered bushing lumen type face pressure head (1) under by guide rod (18)
It bores former (6) coaxially, prevents the lower cone shaped eccentric；
(5) step 5: adjusting lumen type face pressure head (1) and lower cone former in double tapered bushing
(6) after concentricity, lumen type face pressure head (1) in double tapered bushing is exited to initial position, i.e., under guiding bar (18)
The distance between end face and the upper surface of double tapered bushing outer mold surface interlayer set (4) are greater than the entire length of double tapered bushing, just
Double tapered bushing blank (2) is sent into mold in feed mechanism；
(6) step 6: double tapered bushing blank (2) is packed into double tapered bushing outer mold surface interlayer set under the drive of feed mechanism
(4) in, double tapered bushing blank bar portion (27) is contacted with double tapered bushing bar portion outer mold surface limit hole (43)；
(7) step 7: lumen type face pressure head (1) moves downward in double tapered bushing, in the upper conical surface (13) and double tapered bushing blank
Angle faces (21) contact drives double tapered bushing blank (2) to transport downwards along double tapered bushing bar portion outer mold surface limit hole (43)
Dynamic, in the process, bar portion (15) is contacted with lumen type face (23) in double tapered bushing, and bar portion is transferred fillet (14) and double tapered serves as a contrast
Blank filleted corner (22) contact is covered, guarantees that the interior lumen type face of double tapered bushing blank is bonded completely with pressure head, prevents its internal mistake
Surely；
(8) step 8: after lumen type face pressure head (1) is bonded with double tapered bushing blank (2) in double tapered bushing, continue fortune downwards
Dynamic, the conical surface (25) is contacted with double tapered bushing epicone supporting surface (41) on double tapered bushing blank, double tapered bushing blank epicone
Fillet (26) is contacted with bar portion switching fillet (42)；When lumen type face (23) enter lower cone former pilot hole (62) in double tapered bushing
Afterwards, lower cone forming process is initially entered；Double tapered bushing blank outer circle lower end surface (28) passes through cone switching fillet (63) under former,
Lower cone is shaped along lower cone former cone angle face (64)；In the process, double tapered bushing blank inner circle lower end surface (24) along
The conical surface (16) moves under pressure head, guarantees to bore forming dimension precision under double tapered bushing；
(9) step 9: shaped under double tapered bushing bore after, lumen type face pressure head (1) in double tapered bushing is first exited into mold extremely
Initial position pushes up discharge arm (7), at this point, discharge arm upper surface (71) and double tapered bushing (3) lower end face contact,
By its ejection die, discharging is completed；So far the loading and unloading and forming cycle process bored under double tapered bushing are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610858012.7A CN107866496B (en) | 2016-09-28 | 2016-09-28 | It is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610858012.7A CN107866496B (en) | 2016-09-28 | 2016-09-28 | It is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing |
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| Publication Number | Publication Date |
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| CN107866496A CN107866496A (en) | 2018-04-03 |
| CN107866496B true CN107866496B (en) | 2019-07-09 |
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| CN201610858012.7A Active CN107866496B (en) | 2016-09-28 | 2016-09-28 | It is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108636913A (en) * | 2018-07-26 | 2018-10-12 | 天津鹏宇兴业五金制品有限公司 | A kind of steel nail cleaning device |
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|---|---|---|---|---|
| JP2004122189A (en) * | 2002-10-03 | 2004-04-22 | Sango Co Ltd | Pipe contracting method and pipe contracting device |
| CN1927498A (en) * | 2006-08-30 | 2007-03-14 | 赵铎 | Radius variation and mouth reducing method for radius-variable short tube |
| CN101754820A (en) * | 2007-06-29 | 2010-06-23 | Gkn动力传动系统国际有限责任公司 | Device and method for the axial forming of elongated hollow bodies |
| CN104128503A (en) * | 2014-07-23 | 2014-11-05 | 成都市龙泉驿区齐盛机械厂 | Self-return necking die |
| CN104475583A (en) * | 2014-12-21 | 2015-04-01 | 重庆燕蓝科技有限公司 | Necking die for pipe |
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2016
- 2016-09-28 CN CN201610858012.7A patent/CN107866496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004122189A (en) * | 2002-10-03 | 2004-04-22 | Sango Co Ltd | Pipe contracting method and pipe contracting device |
| CN1927498A (en) * | 2006-08-30 | 2007-03-14 | 赵铎 | Radius variation and mouth reducing method for radius-variable short tube |
| CN101754820A (en) * | 2007-06-29 | 2010-06-23 | Gkn动力传动系统国际有限责任公司 | Device and method for the axial forming of elongated hollow bodies |
| CN104128503A (en) * | 2014-07-23 | 2014-11-05 | 成都市龙泉驿区齐盛机械厂 | Self-return necking die |
| CN104475583A (en) * | 2014-12-21 | 2015-04-01 | 重庆燕蓝科技有限公司 | Necking die for pipe |
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| CN107866496A (en) | 2018-04-03 |
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